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probe</title> <meta name="description" content="Search results for: four-point probe"> <meta name="keywords" content="four-point probe"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="four-point probe"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 436</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: four-point probe</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">436</span> Added Value of 3D Ultrasound Image Guided Hepatic Interventions by X Matrix Technology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Abdel%20Sattar%20Khalil">Ahmed Abdel Sattar Khalil</a>, <a href="https://publications.waset.org/abstracts/search?q=Hazem%20Omar"> Hazem Omar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Image-guided hepatic interventions are integral to the management of infective and neoplastic liver lesions. Over the past decades, 2D ultrasound was used for guidance of hepatic interventions; with the recent advances in ultrasound technology, 3D ultrasound was used to guide hepatic interventions. The aim of this study was to illustrate the added value of 3D image guided hepatic interventions by x matrix technology. Patients and Methods: This prospective study was performed on 100 patients who were divided into two groups; group A included 50 patients who were managed by 2D ultrasonography probe guidance, and group B included 50 patients who were managed by 3D X matrix ultrasonography probe guidance. Thermal ablation was done for 70 patients, 40 RFA (20 by the 2D probe and 20 by the 3D x matrix probe), and 30 MWA (15 by the 2D probe and 15 by the 3D x matrix probe). Chemical ablation (PEI) was done on 20 patients (10 by the 2D probe and 10 by the 3D x matrix probe). Drainage of hepatic collections and biopsy from undiagnosed hepatic focal lesions was done on 10 patients (5 by the 2D probe and 5 by the 3D x matrix probe). Results: The efficacy of ultrasonography-guided hepatic interventions by 3D x matrix probe was higher than the 2D probe but not significantly higher, with a p-value of 0.705, 0.5428 for RFA, MWA respectively, 0.5312 for PEI, 0.2918 for drainage of hepatic collections and biopsy. The complications related to the use of the 3D X matrix probe were significantly lower than the 2D probe, with a p-value of 0.003. The timing of the procedure was shorter by the usage of 3D x matrix probe in comparison to the 2D probe with a p-value of 0.08,0.34 for RFA and PEI and significantly shorter for MWA, and drainage of hepatic collection, biopsy with a P-value of 0.02,0.001 respectively. Conclusions: 3D ultrasonography-guided hepatic interventions by 脗 x matrix probe have better efficacy, less complication, and shorter time of procedure than the 2D ultrasonography-guided hepatic interventions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=3D" title="3D">3D</a>, <a href="https://publications.waset.org/abstracts/search?q=X%20matrix" title=" X matrix"> X matrix</a>, <a href="https://publications.waset.org/abstracts/search?q=2D" title=" 2D"> 2D</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonography" title=" ultrasonography"> ultrasonography</a>, <a href="https://publications.waset.org/abstracts/search?q=MWA" title=" MWA"> MWA</a>, <a href="https://publications.waset.org/abstracts/search?q=RFA" title=" RFA"> RFA</a>, <a href="https://publications.waset.org/abstracts/search?q=PEI" title=" PEI"> PEI</a>, <a href="https://publications.waset.org/abstracts/search?q=drainage%20of%20hepatic%20collections" title=" drainage of hepatic collections"> drainage of hepatic collections</a>, <a href="https://publications.waset.org/abstracts/search?q=biopsy" title=" biopsy"> biopsy</a> </p> <a href="https://publications.waset.org/abstracts/173809/added-value-of-3d-ultrasound-image-guided-hepatic-interventions-by-x-matrix-technology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/173809.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">95</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">435</span> Nanofocusing of Surface Plasmon Polaritons by Partially Metal- Coated Dielectric Conical Probe: Optimal Asymmetric Distance</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ngo%20Thi%20Thu">Ngo Thi Thu</a>, <a href="https://publications.waset.org/abstracts/search?q=Kazuo%20Tanaka"> Kazuo Tanaka</a>, <a href="https://publications.waset.org/abstracts/search?q=Masahiro%20Tanaka"> Masahiro Tanaka</a>, <a href="https://publications.waset.org/abstracts/search?q=Dao%20Ngoc%20Chien"> Dao Ngoc Chien</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nanometric superfocusing of optical intensity near the tip of partially metal- coated dielectric conical probe of the convergent surface plasmon polariton wave is investigated by the volume integral equation method. It is possible to perform nanofocusing using this probe by using both linearly and radially polarized Gaussian beams as the incident waves. Strongly localized and enhanced optical near-fields can be created on the tip of this probe for the cases of both incident Gaussian beams. However the intensity distribution near the probe tip was found to be very sensitive to the shape of the probe tip. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=waveguide" title="waveguide">waveguide</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20plasmons" title=" surface plasmons"> surface plasmons</a>, <a href="https://publications.waset.org/abstracts/search?q=electromagnetic%20theory" title=" electromagnetic theory"> electromagnetic theory</a> </p> <a href="https://publications.waset.org/abstracts/28337/nanofocusing-of-surface-plasmon-polaritons-by-partially-metal-coated-dielectric-conical-probe-optimal-asymmetric-distance" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28337.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">477</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">434</span> Mind-Wandering and Attention: Evidence from Behavioral and Subjective Perspective</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Riya%20Mishra">Riya Mishra</a>, <a href="https://publications.waset.org/abstracts/search?q=Trayambak%20Tiwari"> Trayambak Tiwari</a>, <a href="https://publications.waset.org/abstracts/search?q=Anju%20Lata%20Singh"> Anju Lata Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20L.%20Singh"> I. L. Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Tara%20Singh"> Tara Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Decrement in vigilance task performance echoes impediment in effortful attention; here attention fluctuated in the realm of external and internal milieu of a person. To examine this fluctuation across time period, we employed two experiments of vigilance task with variation in thought probing rate, which was embedded in the task. The thought probe varies in terms of <2 minute per thought probe and <4 minute per thought probe during vigilance task. A 2x4 repeated measure factorial design was used. 15 individuals participated in this study with an age range of 20-26 years. It was found that thought probing rate has a negative trend with vigilance task performance whereas the subjective measures of mind-wandering have a positive relation with thought probe rate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=criterion%20response" title="criterion response">criterion response</a>, <a href="https://publications.waset.org/abstracts/search?q=mental%20status" title=" mental status"> mental status</a>, <a href="https://publications.waset.org/abstracts/search?q=mind-wandering" title=" mind-wandering"> mind-wandering</a>, <a href="https://publications.waset.org/abstracts/search?q=thought%20probe" title=" thought probe"> thought probe</a>, <a href="https://publications.waset.org/abstracts/search?q=vigilance" title=" vigilance"> vigilance</a> </p> <a href="https://publications.waset.org/abstracts/61046/mind-wandering-and-attention-evidence-from-behavioral-and-subjective-perspective" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/61046.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">423</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">433</span> The Pitch Diameter of Pipe Taper Thread Measurement and Uncertainty Using Three-Wire Probe</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=J.%20Kloypayan">J. Kloypayan</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20Pimpakan"> W. Pimpakan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The pipe taper thread measurement and uncertainty normally used the four-wire probe according to the JIS B 0262. Besides, according to the EA-10/10 standard, the pipe thread could be measured using the three-wire probe. This research proposed to use the three-wire probe measuring the pitch diameter of the pipe taper thread. The measuring accessory component was designed and made, then, assembled to one side of the ULM 828 CiM machine. Therefore, this machine could be used to measure and calibrate both the pipe thread and the pipe taper thread. The equations and the expanded uncertainty for pitch diameter measurement were formulated. After the experiment, the results showed that the pipe taper thread had the pitch diameter equal to 19.165 mm and the expanded uncertainty equal to 1.88碌m. Then, the experiment results were compared to the results from the National Institute of Metrology Thailand. The equivalence ratio from the comparison showed that both results were related. Thus, the proposed method of using the three-wire probe measured the pitch diameter of the pipe taper thread was acceptable. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pipe%20taper%20thread" title="pipe taper thread">pipe taper thread</a>, <a href="https://publications.waset.org/abstracts/search?q=three-wire%20probe" title=" three-wire probe"> three-wire probe</a>, <a href="https://publications.waset.org/abstracts/search?q=measure%20and%20calibration" title=" measure and calibration"> measure and calibration</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20universal%20length%20measuring%20machine" title=" the universal length measuring machine"> the universal length measuring machine</a> </p> <a href="https://publications.waset.org/abstracts/2496/the-pitch-diameter-of-pipe-taper-thread-measurement-and-uncertainty-using-three-wire-probe" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2496.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">406</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">432</span> Development of Ultrasounf Probe Holder for Automatic Scanning Asymmetric Reflector</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nabilah%20Ibrahim">Nabilah Ibrahim</a>, <a href="https://publications.waset.org/abstracts/search?q=Hafiz%20Mohd%20Zaini"> Hafiz Mohd Zaini</a>, <a href="https://publications.waset.org/abstracts/search?q=Wan%20Fatin%20Liyana%20Mutalib"> Wan Fatin Liyana Mutalib</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Ultrasound equipment or machine is capable to scan in two dimensional (2D) areas. However there are some limitations occur during scanning an object. The problem will occur when scanning process that involving the asymmetric object. In this project, the ultrasound probe holder for asymmetric reflector scanning in 3D image is proposed to make easier for scanning the phantom or object that has asymmetric shape. Initially, the constructed asymmetric phantom that construct will be used in 2D scanning. Next, the asymmetric phantom will be interfaced by the movement of ultrasound probe holder using the Arduino software. After that, the performance of the ultrasound probe holder will be evaluated by using the various asymmetric reflector or phantom in constructing a 3D image <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ultrasound%203D%20images" title="ultrasound 3D images">ultrasound 3D images</a>, <a href="https://publications.waset.org/abstracts/search?q=axial%20and%20lateral%20resolution" title=" axial and lateral resolution"> axial and lateral resolution</a>, <a href="https://publications.waset.org/abstracts/search?q=asymmetric%20reflector" title=" asymmetric reflector"> asymmetric reflector</a>, <a href="https://publications.waset.org/abstracts/search?q=Arduino%20software" title=" Arduino software"> Arduino software</a> </p> <a href="https://publications.waset.org/abstracts/22856/development-of-ultrasounf-probe-holder-for-automatic-scanning-asymmetric-reflector" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22856.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">560</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">431</span> Photophysics and Rotational Relaxation Dynamics of 6-Methoxyquinoline Fluorophore in Cationic Alkyltrimethylammonium Bromide Micelles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tej%20Varma%20Y">Tej Varma Y</a>, <a href="https://publications.waset.org/abstracts/search?q=Debi%20D.%20Pant"> Debi D. Pant</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Photophysics and rotational dynamics of the fluorescent probe, 6-methoxyquinoline (6MQ) with cationic surfactant, alkyltrimethylammonium bromide (nTAB) micelle solutions have been investigated (n = 12, 14 and 16). Absorption and emission peaks of the dye have been observed to shift at concentrations around critical micellar concentration (cmc) of nTAB compared to that of bulk solutions suggesting probe is in a lower polar environment. The probe senses changes in polarity (ET (30)) brought about by variation of surfactant chain length concentration and is invariably solubilized in the aqueous interface or palisade layer. The order of change in polarity observed was DTAB > CTAB > TTAB. The binding constant study shows that the probe binds strongest with TTAB (is of the order TTAB > CTAB > DTAB) due to deeper penetration into the micelle. The anisotropy decay for the probe in all the nTAB micelles studied have been rationalized based on a two-step model consisting of fast-restricted rotation of the probe and slow lateral diffusion of the probe in the micelle that is coupled to the overall rotation of the micelle. Fluorescence lifetime measurements of probe in the cationic micelles demonstrate the close proximity of the 6MQ to the Br - counterions. The fluorescence lifetimes of TTAB and DTAB are much shorter than in CTAB. These results indicate that 6MQ resides to a substantial degree in the head group region of the micelles. All the changes observed in the steady state fluorescence, microenvironment, fluorescence lifetimes, fluorescence anisotropy, and other calculations are in agreement with each other suggesting binding of the cationic surfactant with the neutral dye molecule. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photophysics" title="photophysics">photophysics</a>, <a href="https://publications.waset.org/abstracts/search?q=chain%20length" title=" chain length"> chain length</a>, <a href="https://publications.waset.org/abstracts/search?q=ntaB" title=" ntaB"> ntaB</a>, <a href="https://publications.waset.org/abstracts/search?q=micelles" title=" micelles"> micelles</a> </p> <a href="https://publications.waset.org/abstracts/39913/photophysics-and-rotational-relaxation-dynamics-of-6-methoxyquinoline-fluorophore-in-cationic-alkyltrimethylammonium-bromide-micelles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39913.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">636</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">430</span> A DNA-Based Nano-biosensor for the Rapid Detection of the Dengue Virus in Mosquito </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lilia%20M.%20Fernando">Lilia M. Fernando</a>, <a href="https://publications.waset.org/abstracts/search?q=Matthew%20K.%20Vasher"> Matthew K. Vasher</a>, <a href="https://publications.waset.org/abstracts/search?q=Evangelyn%20C.%20Alocilja"> Evangelyn C. Alocilja</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper describes the development of a DNA-based nanobiosensor to detect the dengue virus in mosquito using electrically active magnetic (EAM) nanoparticles as the concentrator and electrochemical transducer. The biosensor detection encompasses two sets of oligonucleotide probes that are specific to the dengue virus: the detector probe labeled with the EAM nanoparticles and the biotinylated capture probe. The DNA targets are double hybridized to the detector and the capture probes and concentrated from nonspecific DNA fragments by applying a magnetic field. Subsequently, the DNA sandwiched targets (EAM-detector probe鈥揇NA target鈥揷apture probe-biotin) are captured on streptavidin modified screen printed carbon electrodes through the biotinylated capture probes. Detection is achieved electrochemically by measuring the oxidation鈥搑eduction signal of the EAM nanoparticles. Results indicate that the biosensor is able to detect the redox signal of the EAM nanoparticles at dengue DNA concentrations as low as 10 ng/ul. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dengue" title="dengue">dengue</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20nanoparticles" title=" magnetic nanoparticles"> magnetic nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=mosquito" title=" mosquito"> mosquito</a>, <a href="https://publications.waset.org/abstracts/search?q=nanobiosensor" title=" nanobiosensor"> nanobiosensor</a> </p> <a href="https://publications.waset.org/abstracts/37690/a-dna-based-nano-biosensor-for-the-rapid-detection-of-the-dengue-virus-in-mosquito" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37690.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">366</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">429</span> Reliability of Swine Estrous Detector Probe in Dairy Cattle Breeding</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=O.%20O.%20Leigh">O. O. Leigh</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20C.%20Agbugba"> L. C. Agbugba</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20O.%20Oyewunmi"> A. O. Oyewunmi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20E.%20Ibiam"> A. E. Ibiam</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Hassan"> A. Hassan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Accuracy of insemination timing is a key determinant of high pregnancy rates in livestock breeding stations. The estrous detector probes are a recent introduction into the Nigerian livestock farming sector. Many of these probes are species-labeled and they measure changes in the vaginal mucus resistivity (VMR) during the stages of the estrous cycle. With respect to size and shaft conformation, the Draminski庐 swine estrous detector probe (sEDP) is quite similar to the bovine estrous detector probe. We investigated the reliability of the sEDP at insemination time on two farms designated as FM A and FM B. Cows (Bunaji, n=20 per farm) were evaluated for VMR at 16th h post standard OvSynch protocol, with concurrent insemination on FM B only. The difference in the mean VMR between FM A (221 卤 24.36) Ohms and FM B (254 卤 35.59) Ohms was not significant (p > 0.05). Sixteen cows (80%) at FM B were later (day 70) confirmed pregnant via rectal palpation and calved at term. These findings suggest consistency in VMR evaluated with sEDP at insemination as well as a high predictability for VMR associated with good pregnancy rates in dairy cattle. We conclude that Draminski庐 swine estrous detector probe is reliable in determining time of insemination in cattle breeding stations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dairy%20cattle" title="dairy cattle">dairy cattle</a>, <a href="https://publications.waset.org/abstracts/search?q=insemination" title=" insemination"> insemination</a>, <a href="https://publications.waset.org/abstracts/search?q=swine%20estrous%20probe" title=" swine estrous probe"> swine estrous probe</a>, <a href="https://publications.waset.org/abstracts/search?q=vaginal%20mucus%20resistivity" title=" vaginal mucus resistivity"> vaginal mucus resistivity</a> </p> <a href="https://publications.waset.org/abstracts/108250/reliability-of-swine-estrous-detector-probe-in-dairy-cattle-breeding" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/108250.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">124</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">428</span> Spectrophotometric Determination of Photohydroxylated Products of Humic Acid in the Presence of Salicylate Probe</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Julide%20Hizal%20Yucesoy">Julide Hizal Yucesoy</a>, <a href="https://publications.waset.org/abstracts/search?q=Batuhan%20Yardimci"> Batuhan Yardimci</a>, <a href="https://publications.waset.org/abstracts/search?q=Aysem%20Arda"> Aysem Arda</a>, <a href="https://publications.waset.org/abstracts/search?q=Resat%20Apak"> Resat Apak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Humic substances produce reactive oxygene species such as hydroxyl, phenoxy and superoxide radicals by oxidizing in a wide pH and reduction potential range. Hydroxyl radicals, produced by reducing agents such as antioxidants and/or peroxides, attack on salicylate probe, and form 2,3-dihydroxybenzoate, 2,4-dihydroxybenzoate and 2,5-dihydroxybenzoate species. These species are quantitatively determined by using HPLC Method. Humic substances undergo photodegradation by UV radiation. As a result of their antioxidant properties, they produce hydroxyl radicals. In the presence of salicylate probe, these hydroxyl radicals react with salicylate molecules to form hydroxylated products (dihidroxybenzoate isomers). In this study, humic acid was photodegraded in a photoreactor at 254 nm (400W), formed hydroxyl radicals were caught by salicylate probe. The total concentration of hydroxylated salicylate species was measured by using spectrophotometric CUPRAC Method. And also, using results of time dependent experiments, kinetic of photohydroxylation was determined at different pHs. This method has been applied for the first time to measure the concentration of hydroxylated products. It allows to achieve the results easier than HPLC Method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CUPRAC%20method" title="CUPRAC method">CUPRAC method</a>, <a href="https://publications.waset.org/abstracts/search?q=humic%20acid" title=" humic acid"> humic acid</a>, <a href="https://publications.waset.org/abstracts/search?q=photohydroxylation" title=" photohydroxylation"> photohydroxylation</a>, <a href="https://publications.waset.org/abstracts/search?q=salicylate%20probe" title=" salicylate probe"> salicylate probe</a> </p> <a href="https://publications.waset.org/abstracts/68393/spectrophotometric-determination-of-photohydroxylated-products-of-humic-acid-in-the-presence-of-salicylate-probe" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68393.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">206</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">427</span> Evaluation of Soil Thermal-Entropy Properties with a Single-Probe Heat-Pulse Technique</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdull%20Halim%20Abdull">Abdull Halim Abdull</a>, <a href="https://publications.waset.org/abstracts/search?q=Nasiman%20Sapari"> Nasiman Sapari</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Haikal%20Asyraf%20Bin%20Anuar"> Mohammad Haikal Asyraf Bin Anuar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Although soil thermal properties are required in many areas to improve oil recovery, they are seldom measured on a routine basis. Reasons for this are unclear, but may be related to a lack of suitable instrumentation and entropy theory. We integrate single probe thermal gradient for the radial conduction of a short-duration heat pulse away from a single electrode source, and compared it with the theory for an instantaneously heated line source. By measuring the temperature response at a short distance from the line source, and applying short-duration heat-pulse theory, we can extract all the entropy properties, the thermal diffusivity, heat capacity, and conductivity, from a single heat-pulse measurement. Results of initial experiments carried out on air-dry sand and clay materials indicate that this heat-pulse method yields soil thermal properties that compare well with thermal properties measured by single electrode. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=entropy" title="entropy">entropy</a>, <a href="https://publications.waset.org/abstracts/search?q=single%20probe%20thermal%20gradient" title=" single probe thermal gradient"> single probe thermal gradient</a>, <a href="https://publications.waset.org/abstracts/search?q=soil%20thermal" title=" soil thermal"> soil thermal</a>, <a href="https://publications.waset.org/abstracts/search?q=probe%20heat" title=" probe heat "> probe heat </a> </p> <a href="https://publications.waset.org/abstracts/5201/evaluation-of-soil-thermal-entropy-properties-with-a-single-probe-heat-pulse-technique" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/5201.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">446</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">426</span> A Dual-Polarized Wideband Probe for Near-Field Antenna Measurement</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20S.%20Sruthi">K. S. Sruthi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Antennas are one of the most important parts of a communication chain. They are used for both communication and calibration purposes. New developments in probe technologies have enabled near-field probes with much larger bandwidth. The objective of this paper is to design, simulate and fabricate a dual polarized wide band inverted quad ridged shape horn antenna which can be used as measurement probe for near field measurements. The inverted quad-ridged horn antenna probe not only provides measurement in the much wider range but also provides dual-polarization measurement thus enabling antenna developers to measure UWB, UHF, VHF antennas more precisely and at lower cost. The antenna is designed to meet the characteristics such as high gain, light weight, linearly polarized with suppressed side lobes for near-field measurement applications. The proposed antenna is simulated with commercially available packages such as Ansoft HFSS. The antenna gives a moderate gain over operating range while delivering a wide bandwidth. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=near-field%20antenna%20measurement" title="near-field antenna measurement">near-field antenna measurement</a>, <a href="https://publications.waset.org/abstracts/search?q=inverted%20quad-ridge%20horn%20antenna" title=" inverted quad-ridge horn antenna"> inverted quad-ridge horn antenna</a>, <a href="https://publications.waset.org/abstracts/search?q=wideband%20Antennas" title=" wideband Antennas"> wideband Antennas</a>, <a href="https://publications.waset.org/abstracts/search?q=dual%20polarized%20antennas" title=" dual polarized antennas"> dual polarized antennas</a>, <a href="https://publications.waset.org/abstracts/search?q=ansoft%20HFSS" title=" ansoft HFSS"> ansoft HFSS</a> </p> <a href="https://publications.waset.org/abstracts/20789/a-dual-polarized-wideband-probe-for-near-field-antenna-measurement" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20789.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">425</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">425</span> A Numerical Investigation of Total Temperature Probes Measurement Performance</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Erdem%20Meri%C3%A7">Erdem Meri莽</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Measuring total temperature of air flow accurately is a very important requirement in the development phases of many industrial products, including gas turbines and rockets. Thermocouples are very practical devices to measure temperature in such cases, but in high speed and high temperature flows, the temperature of thermocouple junction may deviate considerably from real flow total temperature due to the effects of heat transfer mechanisms of convection, conduction, and radiation. To avoid errors in total temperature measurement, special probe designs which are experimentally characterized are used. In this study, a validation case which is an experimental characterization of a specific class of total temperature probes is selected from the literature to develop a numerical conjugate heat transfer analysis methodology to study the total temperature probe flow field and solid temperature distribution. Validated conjugate heat transfer methodology is used to investigate flow structures inside and around the probe and effects of probe design parameters like the ratio between inlet and outlet hole areas and prob tip geometry on measurement accuracy. Lastly, a thermal model is constructed to account for errors in total temperature measurement for a specific class of probes in different operating conditions. Outcomes of this work can guide experimentalists to design a very accurate total temperature probe and quantify the possible error for their specific case. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=conjugate%20heat%20transfer" title="conjugate heat transfer">conjugate heat transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=recovery%20factor" title=" recovery factor"> recovery factor</a>, <a href="https://publications.waset.org/abstracts/search?q=thermocouples" title=" thermocouples"> thermocouples</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20temperature%20probes" title=" total temperature probes"> total temperature probes</a> </p> <a href="https://publications.waset.org/abstracts/159224/a-numerical-investigation-of-total-temperature-probes-measurement-performance" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/159224.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">134</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">424</span> Mechanical Response Investigation of Wafer Probing Test with Vertical Cobra Probe via the Experiment and Transient Dynamic Simulation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=De-Shin%20Liu">De-Shin Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Po-Chun%20Wen"> Po-Chun Wen</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhen-Wei%20Zhuang"> Zhen-Wei Zhuang</a>, <a href="https://publications.waset.org/abstracts/search?q=Hsueh-Chih%20Liu"> Hsueh-Chih Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Pei-Chen%20Huang"> Pei-Chen Huang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Wafer probing tests play an important role in semiconductor manufacturing procedures in accordance with the yield and reliability requirement of the wafer after the backend-of-the-line process. Accordingly, the stable physical and electrical contact between the probe and the tested wafer during wafer probing is regarded as an essential issue in identifying the known good die. The probe card can be integrated with multiple probe needles, which are classified as vertical, cantilever and micro-electro-mechanical systems type probe selections. Among all potential probe types, the vertical probe has several advantages as compared with other probe types, including maintainability, high probe density and feasibility for high-speed wafer testing. In the present study, the mechanical response of the wafer probing test with the vertical cobra probe on 720 渭m thick silicon (Si) substrate with a 1.4 渭m thick aluminum (Al) pad is investigated by the experiment and transient dynamic simulation approach. Because the deformation mechanism of the vertical cobra probe is determined by both bending and buckling mechanisms, the stable correlation between contact forces and overdrive (OD) length must be carefully verified. Moreover, the decent OD length with corresponding contact force contributed to piercing the native oxide layer of the Al pad and preventing the probing test-induced damage on the interconnect system. Accordingly, the scratch depth of the Al pad under various OD lengths is estimated by the atomic force microscope (AFM) and simulation work. In the wafer probing test configuration, the contact phenomenon between the probe needle and the tested object introduced large deformation and twisting of mesh gridding, causing the subsequent numerical divergence issue. For this reason, the arbitrary Lagrangian-Eulerian method is utilized in the present simulation work to conquer the aforementioned issue. The analytic results revealed a slight difference when the OD is considered as 40 渭m, and the simulated is almost identical to the measured scratch depths of the Al pad under higher OD lengths up to 70 渭m. This phenomenon can be attributed to the unstable contact of the probe at low OD length with the scratch depth below 30% of Al pad thickness, and the contact status will be being stable when the scratch depth over 30% of pad thickness. The splash of the Al pad is observed by the AFM, and the splashed Al debris accumulates on a specific side; this phenomenon is successfully simulated in the transient dynamic simulation. Thus, the preferred testing OD lengths are found as 45 渭m to 70 渭m, and the corresponding scratch depths on the Al pad are represented as 31.4% and 47.1% of Al pad thickness, respectively. The investigation approach demonstrated in this study contributed to analyzing the mechanical response of wafer probing test configuration under large strain conditions and assessed the geometric designs and material selections of probe needles to meet the requirement of high resolution and high-speed wafer-level probing test for thinned wafer application. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wafer%20probing%20test" title="wafer probing test">wafer probing test</a>, <a href="https://publications.waset.org/abstracts/search?q=vertical%20probe" title=" vertical probe"> vertical probe</a>, <a href="https://publications.waset.org/abstracts/search?q=probe%20mark" title=" probe mark"> probe mark</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20response" title=" mechanical response"> mechanical response</a>, <a href="https://publications.waset.org/abstracts/search?q=FEA%20simulation" title=" FEA simulation"> FEA simulation</a> </p> <a href="https://publications.waset.org/abstracts/179072/mechanical-response-investigation-of-wafer-probing-test-with-vertical-cobra-probe-via-the-experiment-and-transient-dynamic-simulation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/179072.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">56</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">423</span> Enhanced Calibration Map for a Four-Hole Probe for Measuring High Flow Angles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jafar%20Mortadha">Jafar Mortadha</a>, <a href="https://publications.waset.org/abstracts/search?q=Imran%20Qureshi"> Imran Qureshi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research explains and compares the modern techniques used for measuring the flow angles of a flowing fluid with the traditional technique of using multi-hole pressure probes. In particular, the focus of the study is on four-hole probes, which offer great reliability and benefits in several applications where the use of modern measurement techniques is either inconvenient or impractical. Due to modern advancements in manufacturing, small multi-hole pressure probes can be made with high precision, which eliminates the need for calibrating every manufactured probe. This study aims to improve the range of calibration maps for a four-hole probe to allow high flow angles to be measured accurately. The research methodology comprises a literature review of the successful calibration definitions that have been implemented on five-hole probes. These definitions are then adapted and applied on a four-hole probe using a set of raw pressures data. A comparison of the different definitions will be carried out in Matlab and the results will be analyzed to determine the best calibration definition. Taking simplicity of implementation into account as well as the reliability of flow angles estimation, an adapted technique from a research paper written in 2002 offered the most promising outcome. Consequently, the method is seen as a good enhancement for four-hole probes and it can substitute for the existing calibration definitions that offer less accuracy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=calibration%20definitions" title="calibration definitions">calibration definitions</a>, <a href="https://publications.waset.org/abstracts/search?q=calibration%20maps" title=" calibration maps"> calibration maps</a>, <a href="https://publications.waset.org/abstracts/search?q=flow%20measurement%20techniques" title=" flow measurement techniques"> flow measurement techniques</a>, <a href="https://publications.waset.org/abstracts/search?q=four-hole%20probes" title=" four-hole probes"> four-hole probes</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-hole%20pressure%20probes" title=" multi-hole pressure probes"> multi-hole pressure probes</a> </p> <a href="https://publications.waset.org/abstracts/92402/enhanced-calibration-map-for-a-four-hole-probe-for-measuring-high-flow-angles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92402.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">295</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">422</span> Quantum Localization of Vibrational Mirror in Cavity Optomechanics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Madiha%20Tariq">Madiha Tariq</a>, <a href="https://publications.waset.org/abstracts/search?q=Hena%20Rabbani"> Hena Rabbani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Recently, cavity-optomechanics becomes an extensive research field that has manipulated the mechanical effects of light for coupling of the optical field with other physical objects specifically with regards to dynamical localization. We investigate the dynamical localization (both in momentum and position space) for a vibrational mirror in a Fabry-Pérot cavity driven by a single mode optical field and a transverse probe field. The weak probe field phenomenon results in classical chaos in phase space and spatio temporal dynamics in position |ψ(x)²| and momentum space |ψ(p)²| versus time show quantum localization in both momentum and position space. Also, we discuss the parametric dependencies of dynamical localization for a designated set of parameters to be experimentally feasible. Our work opens an avenue to manipulate the other optical phenomena and applicability of proposed work can be prolonged to turn-able laser sources in the future. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dynamical%20localization" title="dynamical localization">dynamical localization</a>, <a href="https://publications.waset.org/abstracts/search?q=cavity%20optomechanics" title=" cavity optomechanics"> cavity optomechanics</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamiltonian%20chaos" title=" Hamiltonian chaos"> Hamiltonian chaos</a>, <a href="https://publications.waset.org/abstracts/search?q=probe%20field" title=" probe field"> probe field</a> </p> <a href="https://publications.waset.org/abstracts/108127/quantum-localization-of-vibrational-mirror-in-cavity-optomechanics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/108127.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">150</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">421</span> Iron(III)-Tosylate Doped PEDOT and PEG: A Nanoscale Conductivity Study of an Electrochemical System with Biosensing Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Giulio%20Rosati">Giulio Rosati</a>, <a href="https://publications.waset.org/abstracts/search?q=Luciano%20Sappia"> Luciano Sappia</a>, <a href="https://publications.waset.org/abstracts/search?q=Rossana%20Madrid"> Rossana Madrid</a>, <a href="https://publications.waset.org/abstracts/search?q=Noemi%20Rozl%C3%B2snik"> Noemi Rozl貌snik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The addition of PEG of different molecular weights has important effects on the physical, electrical and electrochemical properties of iron(III)-tosylate doped PEDOT. This particular polymer can be easily spin coated over plastic discs, optimizing thickness and uniformity of the PEDOT-PEG films. The conductivity and morphological analysis of the hybrid PEDOT-PEG polymer by 4-point probe (4PP), 12-point probe (12PP), and conductive AFM (C-AFM) show strong effects of the PEG doping. Moreover, the conductive films kinetics at the nanoscale, in response to different bias voltages, change radically depending on the PEG molecular weight. The hybrid conductive films show also interesting electrochemical properties, making the PEDOT PEG doping appealing for biosensing applications both for EIS-based and amperometric affinity/catalytic biosensors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=atomic%20force%20microscopy" title="atomic force microscopy">atomic force microscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=biosensors" title=" biosensors"> biosensors</a>, <a href="https://publications.waset.org/abstracts/search?q=four-point%20probe" title=" four-point probe"> four-point probe</a>, <a href="https://publications.waset.org/abstracts/search?q=nano-films" title=" nano-films"> nano-films</a>, <a href="https://publications.waset.org/abstracts/search?q=PEDOT" title=" PEDOT"> PEDOT</a> </p> <a href="https://publications.waset.org/abstracts/75824/ironiii-tosylate-doped-pedot-and-peg-a-nanoscale-conductivity-study-of-an-electrochemical-system-with-biosensing-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75824.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">343</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">420</span> Annealing of the Contact between Graphene and Metal: Electrical and Raman Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Sakavi%C4%8Dius">A. Sakavi膷ius</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Luk%C5%A1a"> A. Luk拧a</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Nargelien%C4%97"> V. Nargelien臈</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Bukauskas"> V. Bukauskas</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Astromskas"> G. Astromskas</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20%C5%A0etkus"> A. 艩etkus</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We investigate the influence of annealing on the properties of a contact between graphene and metal (Au and Ni), using circular transmission line model (CTLM) contact geometry. Kelvin probe force microscopy (KPFM) and Raman spectroscopy are applied for characterization of the surface and interface properties. Annealing causes a decrease of the metal-graphene contact resistance for both Ni and Au. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Au%2FGraphene%20contacts" title="Au/Graphene contacts">Au/Graphene contacts</a>, <a href="https://publications.waset.org/abstracts/search?q=graphene" title=" graphene"> graphene</a>, <a href="https://publications.waset.org/abstracts/search?q=Kelvin%20force%20probe%20microscopy" title=" Kelvin force probe microscopy"> Kelvin force probe microscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=NiC%2FGraphene%20contacts" title=" NiC/Graphene contacts"> NiC/Graphene contacts</a>, <a href="https://publications.waset.org/abstracts/search?q=Ni%2FGraphene%20contacts" title=" Ni/Graphene contacts"> Ni/Graphene contacts</a>, <a href="https://publications.waset.org/abstracts/search?q=Raman%20spectroscopy" title=" Raman spectroscopy"> Raman spectroscopy</a> </p> <a href="https://publications.waset.org/abstracts/67751/annealing-of-the-contact-between-graphene-and-metal-electrical-and-raman-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67751.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">317</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">419</span> Development of Automatic Laser Scanning Measurement Instrument</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chien-Hung%20Liu">Chien-Hung Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu-Fen%20Chen"> Yu-Fen Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study used triangular laser probe and three-axial direction mobile platform for surface measurement, programmed it and applied it to real-time analytic statistics of different measured data. This structure was used to design a system integration program: using triangular laser probe for scattering or reflection non-contact measurement, transferring the captured signals to the computer through RS-232, and using RS-485 to control the three-axis platform for a wide range of measurement. The data captured by the laser probe are formed into a 3D surface. This study constructed an optical measurement application program in the concept of visual programming language. First, the signals are transmitted to the computer through RS-232/RS-485, and then the signals are stored and recorded in graphic interface timely. This programming concept analyzes various messages, and makes proper presentation graphs and data processing to provide the users with friendly graphic interfaces and data processing state monitoring, and identifies whether the present data are normal in graphic concept. The major functions of the measurement system developed by this study are thickness measurement, SPC, surface smoothness analysis, and analytical calculation of trend line. A result report can be made and printed promptly. This study measured different heights and surfaces successfully, performed on-line data analysis and processing effectively, and developed a man-machine interface for users to operate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=laser%20probe" title="laser probe">laser probe</a>, <a href="https://publications.waset.org/abstracts/search?q=non-contact%20measurement" title=" non-contact measurement"> non-contact measurement</a>, <a href="https://publications.waset.org/abstracts/search?q=triangulation%20measurement%20principle" title=" triangulation measurement principle"> triangulation measurement principle</a>, <a href="https://publications.waset.org/abstracts/search?q=statistical%20process%20control" title=" statistical process control"> statistical process control</a>, <a href="https://publications.waset.org/abstracts/search?q=labVIEW" title=" labVIEW"> labVIEW</a> </p> <a href="https://publications.waset.org/abstracts/7492/development-of-automatic-laser-scanning-measurement-instrument" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7492.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">360</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">418</span> Study of Ion Density Distribution and Sheath Thickness in Warm Electronegative Plasma</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rajat%20Dhawan">Rajat Dhawan</a>, <a href="https://publications.waset.org/abstracts/search?q=Hitendra%20K.%20Malik"> Hitendra K. Malik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Electronegative plasmas comprising electrons, positive ions, and negative ions are advantageous for their expanding applications in industries. In plasma cleaning, plasma etching, and plasma deposition process, electronegative plasmas are preferred because of relatively less potential developed on the surface of the material under investigation. Also, the presence of negative ions avoid the irregularity in etching shapes and also enhance the material working during the fabrication process. The interaction of metallic conducting surface with plasma becomes mandatory to understand these applications. A metallic conducting probe immersed in a plasma results in the formation of a thin layer of charged species around the probe called as a sheath. The density of the ions embedded on the surface of the material and the sheath thickness are the important parameters for the surface-plasma interaction. Sheath thickness will give rise to the information of affected plasma region due to conducting surface/probe. The knowledge of the density of ions in the sheath region is advantageous in plasma nitriding, and their temperature is equally important as it strongly influences the thickness of the modified layer during surface plasma interaction. In the present work, we considered a negatively biased metallic probe immersed in a warm electronegative plasma. For this system, we adopted the continuity equation and momentum transfer equation for both the positive and negative ions, whereas electrons are described by Boltzmann distribution. Finally, we use the Poisson鈥檚 equation. Here, we assumed the spherical geometry for small probe radius. Poisson鈥檚 equation reveals the behaviour of potential surrounding a conducting metallic probe along with the use of the continuity and momentum transfer equations, with the help of proper boundary conditions. In turn, it gives rise to the information about the density profile of charged species and most importantly the thickness of the sheath. By keeping in mind, the well-known Bohm-Sheath criterion, all calculations are done. We found that positive ion density decreases with an increase in positive ion temperature, whereas it increases with the higher temperature of the negative ions. Positive ion density decreases as we move away from the center of the probe and is found to show a discontinuity at a particular distance from the center of the probe. The distance where discontinuity occurs is designated as sheath edge, i.e., the point where sheath ends. These results are beneficial for industrial applications, as the density of ions embedded on material surface is strongly affected by the temperature of plasma species. It has a drastic influence on the surface properties, i.e., the hardness, corrosion resistance, etc. of the materials. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electronegative%20plasmas" title="electronegative plasmas">electronegative plasmas</a>, <a href="https://publications.waset.org/abstracts/search?q=plasma%20surface%20interaction%20positive%20ion%20density" title=" plasma surface interaction positive ion density"> plasma surface interaction positive ion density</a>, <a href="https://publications.waset.org/abstracts/search?q=sheath%20thickness" title=" sheath thickness"> sheath thickness</a> </p> <a href="https://publications.waset.org/abstracts/103124/study-of-ion-density-distribution-and-sheath-thickness-in-warm-electronegative-plasma" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/103124.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">131</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">417</span> AFM Probe Sensor Designed for Cellular Membrane Components</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sarmiza%20Stanca">Sarmiza Stanca</a>, <a href="https://publications.waset.org/abstracts/search?q=Wolfgang%20Fritzsche"> Wolfgang Fritzsche</a>, <a href="https://publications.waset.org/abstracts/search?q=Christoph%20%20Krafft"> Christoph Krafft</a>, <a href="https://publications.waset.org/abstracts/search?q=J%C3%BCrgen%20Popp"> J眉rgen Popp</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Independent of the cell type a thin layer of a few nanometers thickness surrounds the cell interior as the cellular membrane. The transport of ions and molecules through the membrane is achieved in a very precise way by pores. Understanding the process of opening and closing the pores due to an electrochemical gradient across the membrane requires knowledge of the pore constitutive proteins. Recent reports prove the access to the molecular level of the cellular membrane by atomic force microscopy (AFM). This technique also permits an electrochemical study in the immediate vicinity of the tip. Specific molecules can be electrochemically localized in the natural cellular membrane. Our work aims to recognize the protein domains of the pores using an AFM probe as a miniaturized amperometric sensor, and to follow the protein behavior while changing the applied potential. The intensity of the current produced between the surface and the AFM probe is amplified and detected simultaneously with the surface imaging. The AFM probe plays the role of the working electrode and the substrate, a conductive glass on which the cells are grown, represent the counter electrode. For a better control of the electric potential on the probe, a third electrode Ag/AgCl wire is mounted in the circuit as a reference electrode. The working potential is applied between the electrodes with a programmable source and the current intensity in the circuit is recorded with a multimeter. The applied potential considers the overpotential at the electrode surface and the potential drop due to the current flow through the system. The reported method permits a high resolved electrochemical study of the protein domains on the living cell membrane. The amperometric map identifies areas of different current intensities on the pore depending on the applied potential. The reproducibility of this method is limited by the tip shape, the uncontrollable capacitance, which occurs at the apex and a potential local charge separation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AFM" title="AFM">AFM</a>, <a href="https://publications.waset.org/abstracts/search?q=sensor" title=" sensor"> sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=membrane" title=" membrane"> membrane</a>, <a href="https://publications.waset.org/abstracts/search?q=pores" title=" pores"> pores</a>, <a href="https://publications.waset.org/abstracts/search?q=proteins" title=" proteins"> proteins</a> </p> <a href="https://publications.waset.org/abstracts/29017/afm-probe-sensor-designed-for-cellular-membrane-components" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29017.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">307</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">416</span> DNA-Based Gold Nanoprobe Biosensor to Detect Pork Contaminant</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rizka%20Ardhiyana">Rizka Ardhiyana</a>, <a href="https://publications.waset.org/abstracts/search?q=Liesbetini%20Haditjaroko"> Liesbetini Haditjaroko</a>, <a href="https://publications.waset.org/abstracts/search?q=Sri%20Mulijani"> Sri Mulijani</a>, <a href="https://publications.waset.org/abstracts/search?q=Reki%20Ashadi%20Wicaksono"> Reki Ashadi Wicaksono</a>, <a href="https://publications.waset.org/abstracts/search?q=Raafqi%20Ranasasmita"> Raafqi Ranasasmita</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Designing a sensitive, specific and easy to use method to detect pork contamination in the food industry remains a major challenge. In the current study, we developed a sensitive thiol-bond AuNP-Probe biosensor that will change color when detecting pork DNA in the Cytochrome B region. The interaction between the biosensors and DNA sample is measured by spectrophotometer at 540 nm. The biosensor is made by reducing gold with trisodium citrate to produce gold nanoparticle with 39.05 nm diameter. The AuNP-Probe biosensor (gold nanoprobe) achieved 16.04 ng DNA/碌l limit of detection and 53.48 ng DNA/碌l limit of quantification. The linearity (R2) between color absorbance changes and DNA concentration is 0.9916. The biosensor has a good specificty as it does not cross-react with DNA of chicken and beef. To verify specificity towards the target sequence, PCR was tested to the target sequence and reacted to the PCR product with the biosensor. The PCR DNA isolate resulted in a 2.7 fold higher absorbance compared to pork-DNA isolate alone (without PCR). The sensitivity and specificity of the method show the promising application of the thiol-bond AuNP biosensor in pork-detection. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biosensor" title="biosensor">biosensor</a>, <a href="https://publications.waset.org/abstracts/search?q=DNA%20probe" title=" DNA probe"> DNA probe</a>, <a href="https://publications.waset.org/abstracts/search?q=gold%20nanoparticle%20%28AuNP%29" title=" gold nanoparticle (AuNP)"> gold nanoparticle (AuNP)</a>, <a href="https://publications.waset.org/abstracts/search?q=pork%20meat" title=" pork meat"> pork meat</a>, <a href="https://publications.waset.org/abstracts/search?q=qPCR" title=" qPCR"> qPCR</a> </p> <a href="https://publications.waset.org/abstracts/72688/dna-based-gold-nanoprobe-biosensor-to-detect-pork-contaminant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72688.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">359</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">415</span> Modular Probe for Basic Monitoring of Water and Air Quality</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Andr%C3%A9s%20Calvillo%20T%C3%A9llez">Andr茅s Calvillo T茅llez</a>, <a href="https://publications.waset.org/abstracts/search?q=Marianne%20Mart%C3%ADnez%20Zanzarric"> Marianne Mart铆nez Zanzarric</a>, <a href="https://publications.waset.org/abstracts/search?q=Jos%C3%A9%20Cruz%20N%C3%BA%C3%B1ez%20P%C3%A9rez"> Jos茅 Cruz N煤帽ez P茅rez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A modular system that performs basic monitoring of both water and air quality is presented. Monitoring is essential for environmental, aquaculture, and agricultural disciplines, where this type of instrumentation is necessary for data collection. The system uses low-cost components, which allows readings close to those with high-cost probes. The probe collects readings such as the coordinates of the geographical position, as well as the time it records the target parameters of the monitored. The modules or subsystems that make up the probe are the global positioning (GPS), which shows the altitude, latitude, and longitude data of the point where the reading will be recorded, a real-time clock stage, the date marking the time, the module SD memory continuously stores data, data acquisition system, central processing unit, and energy. The system acquires parameters to measure water quality, conductivity, pressure, and temperature, and for air, three types of ammonia, dioxide, and carbon monoxide gases were censored. The information obtained allowed us to identify the schedule of modification of the parameters and the identification of the ideal conditions for the growth of microorganisms in the water. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=calibration" title="calibration">calibration</a>, <a href="https://publications.waset.org/abstracts/search?q=conductivity" title=" conductivity"> conductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=datalogger" title=" datalogger"> datalogger</a>, <a href="https://publications.waset.org/abstracts/search?q=monitoring" title=" monitoring"> monitoring</a>, <a href="https://publications.waset.org/abstracts/search?q=real%20time%20clock" title=" real time clock"> real time clock</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20quality" title=" water quality"> water quality</a> </p> <a href="https://publications.waset.org/abstracts/145653/modular-probe-for-basic-monitoring-of-water-and-air-quality" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/145653.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">103</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">414</span> Albumin-Induced Turn-on Fluorescence in Molecular Engineered Fluorescent Probe for Biomedical Application</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Raja%20Chinnappan">Raja Chinnappan</a>, <a href="https://publications.waset.org/abstracts/search?q=Huda%20Alanazi"> Huda Alanazi</a>, <a href="https://publications.waset.org/abstracts/search?q=Shanmugam%20Easwaramoorthi"> Shanmugam Easwaramoorthi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tanveer%20Mir"> Tanveer Mir</a>, <a href="https://publications.waset.org/abstracts/search?q=Balamurugan%20Kanagasabai"> Balamurugan Kanagasabai</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Yaqinuddin"> Ahmed Yaqinuddin</a>, <a href="https://publications.waset.org/abstracts/search?q=Sandhanasamy%20Devanesan"> Sandhanasamy Devanesan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamad%20S.%20AlSalhi"> Mohamad S. AlSalhi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Serum albumin (SA) is a highly rich water-soluble protein in plasma. It is known to maintain the living organisms' health and help to maintain the proper liver function, kidney function, and plasma osmolality in the body. Low levels of serum albumin are an indication of liver failure and chronic hepatitis. Therefore, it is important to have a low-cost, accurate and rapid method. In this study, we designed a fluorescent probe, triphenylamine rhodanine-3-acetic acid (mRA), which triggers the fluorescence signal upon binding with serum albumin (SA). mRA is a bifunctional molecule with twisted intramolecular charge transfer (TICT)-induced emission characteristics. An aqueous solution of mRA has an insignificant fluorescence signal; however, when mRA binds to SA, it undergoes TICT and turns on the fluorescence emission. A SA dose-dependent fluorescence signal was performed, and the limit of detection was found to be less than ng/mL. The specific binding of SA was tested from the cross-reactivity study using similar structural or functional proteins. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=serum%20albumin" title="serum albumin">serum albumin</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorescent%20sensing%20probe" title=" fluorescent sensing probe"> fluorescent sensing probe</a>, <a href="https://publications.waset.org/abstracts/search?q=liver%20diseases" title=" liver diseases"> liver diseases</a>, <a href="https://publications.waset.org/abstracts/search?q=twisted%20intramolecular%20charge%20transfer" title=" twisted intramolecular charge transfer"> twisted intramolecular charge transfer</a> </p> <a href="https://publications.waset.org/abstracts/193364/albumin-induced-turn-on-fluorescence-in-molecular-engineered-fluorescent-probe-for-biomedical-application" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/193364.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">17</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">413</span> A Dihydropyridine Derivative as a Highly Selective Fluorometric Probe for Quantification of Au3+ Residue in Gold Nanoparticle Solution</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Waroton%20Paisuwan">Waroton Paisuwan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mongkol%20Sukwattanasinitt"> Mongkol Sukwattanasinitt</a>, <a href="https://publications.waset.org/abstracts/search?q=Mamoru%20Tobisu"> Mamoru Tobisu</a>, <a href="https://publications.waset.org/abstracts/search?q=Anawat%20Ajavakom"> Anawat Ajavakom</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Novel dihydroquinoline derivatives (DHP and DHP-OH) were synthesized in one pot via a tandem trimerization-cyclization of methylpropiolate. DHP and DHP-OH possess strong blue fluorescence with high quantum efficiencies over 0.70 in aqueous media. DHP-OH displays a remarkable fluorescence quenching selectively to the presence of Au3+ through the oxidation of dihydropyridine to pyridinium ion as confirmed by NMR and HRMS. DHP-OH was used to demonstrate the quantitative analysis of Au3+ in water samples with the limit of detection of 33 ppb and excellent recovery (>95%). This fluorescent probe was also applied for the determination of Au3+ residue in the gold nanoparticle solution and a paper-based sensing strip for the on-site detection of Au3+. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gold%28III%29%20ion%20detection" title="Gold(III) ion detection">Gold(III) ion detection</a>, <a href="https://publications.waset.org/abstracts/search?q=Fluorescent%20sensor" title=" Fluorescent sensor"> Fluorescent sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=Fluorescence%20quenching" title=" Fluorescence quenching"> Fluorescence quenching</a>, <a href="https://publications.waset.org/abstracts/search?q=Dihydropyridine" title=" Dihydropyridine"> Dihydropyridine</a>, <a href="https://publications.waset.org/abstracts/search?q=Gold%20nanoparticles%20%28AuNPs%29" title=" Gold nanoparticles (AuNPs)"> Gold nanoparticles (AuNPs)</a> </p> <a href="https://publications.waset.org/abstracts/165620/a-dihydropyridine-derivative-as-a-highly-selective-fluorometric-probe-for-quantification-of-au3-residue-in-gold-nanoparticle-solution" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165620.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">85</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">412</span> Calculation of Orbital Elements for Sending Interplanetary Probes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jorge%20Lus%20Nisperuza%20Toledo">Jorge Lus Nisperuza Toledo</a>, <a href="https://publications.waset.org/abstracts/search?q=Juan%20Pablo%20Rubio%20Ospina"> Juan Pablo Rubio Ospina</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Santiago%20Umana"> Daniel Santiago Umana</a>, <a href="https://publications.waset.org/abstracts/search?q=Hector%20Alejandro%20Alvarez"> Hector Alejandro Alvarez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work develops and implements computational codes to calculate the optimal launch trajectories for sending a probe from the earth to different planets of the Solar system, making use of trajectories of the Hohmann and No-Hohmann type and gravitational assistance in intermediate steps. Specifically, the orbital elements, the graphs and the dynamic simulations of the trajectories for sending a probe from the Earth towards the planets Mercury, Venus, Mars, Jupiter, and Saturn are obtained. A detailed study was made of the state vectors of the position and orbital velocity of the considered planets in order to determine the optimal trajectories of the probe. For this purpose, computer codes were developed and implemented to obtain the orbital elements of the Mariner 10 (Mercury), Magellan (Venus), Mars Global Surveyor (Mars) and Voyager 1 (Jupiter and Saturn) missions, as an exercise in corroborating the algorithms. This exercise gives validity to computational codes, allowing to find the orbital elements and the simulations of trajectories of three future interplanetary missions with specific launch windows. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gravitational%20assistance" title="gravitational assistance">gravitational assistance</a>, <a href="https://publications.waset.org/abstracts/search?q=Hohmann%E2%80%99s%20trajectories" title=" Hohmann鈥檚 trajectories"> Hohmann鈥檚 trajectories</a>, <a href="https://publications.waset.org/abstracts/search?q=interplanetary%20mission" title=" interplanetary mission"> interplanetary mission</a>, <a href="https://publications.waset.org/abstracts/search?q=orbital%20elements" title=" orbital elements"> orbital elements</a> </p> <a href="https://publications.waset.org/abstracts/98727/calculation-of-orbital-elements-for-sending-interplanetary-probes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98727.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">182</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">411</span> Ultrasonic Measurement of Elastic Properties of Fiber Reinforced Composite Materials</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hatice%20Guzel">Hatice Guzel</a>, <a href="https://publications.waset.org/abstracts/search?q=Imran%20Oral"> Imran Oral</a>, <a href="https://publications.waset.org/abstracts/search?q=Huseyin%20Isler"> Huseyin Isler</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, elastic constants, Young鈥檚 modulus, Poisson鈥檚 ratios, and shear moduli of orthotropic composite materials, consisting of E-glass/epoxy and carbon/epoxy, were calculated by ultrasonic velocities which were measured using ultrasonic pulse-echo method. 35 MHz computer controlled analyzer, 60 MHz digital oscilloscope, 5 MHz longitudinal probe, and 2,25 MHz transverse probe were used for the measurements of ultrasound velocities, the measurements were performed at ambient temperature. It was understood from the data obtained in this study that, measured ultrasound velocities and the calculated elasticity coefficients were depending on the fiber orientations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=composite%20materials" title="composite materials">composite materials</a>, <a href="https://publications.waset.org/abstracts/search?q=elastic%20constants" title=" elastic constants"> elastic constants</a>, <a href="https://publications.waset.org/abstracts/search?q=orthotropic%20materials" title=" orthotropic materials"> orthotropic materials</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasound" title=" ultrasound"> ultrasound</a> </p> <a href="https://publications.waset.org/abstracts/74353/ultrasonic-measurement-of-elastic-properties-of-fiber-reinforced-composite-materials" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74353.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">292</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">410</span> An Energy Transfer Fluorescent Probe System for Glucose Sensor at Biomimetic Membrane Surface</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hoa%20Thi%20Hoang">Hoa Thi Hoang</a>, <a href="https://publications.waset.org/abstracts/search?q=Stephan%20Sass"> Stephan Sass</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20U.%20Kumke"> Michael U. Kumke</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Concanavalin A (conA) is a protein has been widely used in sensor system based on its specific binding to 伪-D-Glucose or 伪-D-Manose. For glucose sensor using conA, either fluoresence based techniques with intensity based or lifetime based are used. In this research, liposomes made from phospholipids were used as a biomimetic membrane system. In a first step, novel building blocks containing perylene labeled glucose units were added to the system and used to decorate the surface of the liposomes. Upon the binding between rhodamine labeled con A to the glucose units at the biomimetic membrane surface, a Fo虉rster resonance energy transfer system can be formed which combines unique fluorescence properties of perylene (e.g., high fluorescence quantum yield, no triplet formation) and its high hydrophobicity for efficient anchoring in membranes to form a novel probe for the investigation of sugar-driven binding reactions at biomimetic surfaces. Two glucose-labeled perylene derivatives were synthesized with different spacer length between the perylene and glucose unit in order to probe the binding of conA. The binding interaction was fully characterized by using high-end fluorescence techniques. Steady-state and time-resolved fluorescence techniques (e.g., fluorescence depolarization) in combination with single-molecule fluorescence spectroscopy techniques (fluorescence correlation spectroscopy, FCS) were used to monitor the interaction with conA. Base on the fluorescence depolarization, the rotational correlation times and the alteration in the diffusion coefficient (determined by FCS) the binding of the conA to the liposomes carrying the probe was studied. Moreover, single pair FRET experiments using pulsed interleaved excitation are used to characterize in detail the binding of conA to the liposome on a single molecule level avoiding averaging out effects. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=concanavalin%20A" title="concanavalin A">concanavalin A</a>, <a href="https://publications.waset.org/abstracts/search?q=FRET" title=" FRET"> FRET</a>, <a href="https://publications.waset.org/abstracts/search?q=sensor" title=" sensor"> sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=biomimetic%20membrane" title=" biomimetic membrane"> biomimetic membrane</a> </p> <a href="https://publications.waset.org/abstracts/50468/an-energy-transfer-fluorescent-probe-system-for-glucose-sensor-at-biomimetic-membrane-surface" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50468.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">307</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">409</span> Vibroacoustic Modulation of Wideband Vibrations and its Possible Application for Windmill Blade Diagnostics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdullah%20Alnutayfat">Abdullah Alnutayfat</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20Sutin"> Alexander Sutin</a>, <a href="https://publications.waset.org/abstracts/search?q=Dong%20Liu"> Dong Liu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Wind turbine has become one of the most popular energy productions. However, failure of blades and maintenance costs evolve into significant issues in the wind power industry, so it is essential to detect the initial blade defects to avoid the collapse of the blades and structure. This paper aims to apply modulation of high-frequency blade vibrations by low-frequency blade rotation, which is close to the known Vibro-Acoustic Modulation (VAM) method. The high-frequency wideband blade vibration is produced by the interaction of the surface blades with the environment air turbulence, and the low-frequency modulation is produced by alternating bending stress due to gravity. The low-frequency load of rotational wind turbine blades ranges between 0.2-0.4 Hz and can reach up to 2 Hz for strong wind. The main difference between this study and previous ones on VAM methods is the use of a wideband vibration signal from the blade's natural vibrations. Different features of the vibroacoustic modulation are considered using a simple model of breathing crack. This model considers the simple mechanical oscillator, where the parameters of the oscillator are varied due to low-frequency blade rotation. During the blade's operation, the internal stress caused by the weight of the blade modifies the crack's elasticity and damping. The laboratory experiment using steel samples demonstrates the possibility of VAM using a probe wideband noise signal. A cycle load with a small amplitude was used as a pump wave to damage the tested sample, and a small transducer generated a wideband probe wave. The received signal demodulation was conducted using the Detecting of Envelope Modulation on Noise (DEMON) approach. In addition, the experimental results were compared with the modulation index (MI) technique regarding the harmonic pump wave. The wideband and traditional VAM methods demonstrated similar sensitivity for earlier detection of invisible cracks. Importantly, employing a wideband probe signal with the DEMON approach speeds up and simplifies testing since it eliminates the need to conduct tests repeatedly for various harmonic probe frequencies and to adjust the probe frequency. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=vibro-acoustic%20modulation" title="vibro-acoustic modulation">vibro-acoustic modulation</a>, <a href="https://publications.waset.org/abstracts/search?q=detecting%20of%20envelope%20modulation%20on%20noise" title=" detecting of envelope modulation on noise"> detecting of envelope modulation on noise</a>, <a href="https://publications.waset.org/abstracts/search?q=damage" title=" damage"> damage</a>, <a href="https://publications.waset.org/abstracts/search?q=turbine%20blades" title=" turbine blades"> turbine blades</a> </p> <a href="https://publications.waset.org/abstracts/150112/vibroacoustic-modulation-of-wideband-vibrations-and-its-possible-application-for-windmill-blade-diagnostics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/150112.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">99</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">408</span> Developing Optical Sensors with Application of Cancer Detection by Elastic Light Scattering Spectroscopy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=May%20Fadheel%20Estephan">May Fadheel Estephan</a>, <a href="https://publications.waset.org/abstracts/search?q=Richard%20Perks"> Richard Perks</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Context: Cancer is a serious health concern that affects millions of people worldwide. Early detection and treatment are essential for improving patient outcomes. However, current methods for cancer detection have limitations, such as low sensitivity and specificity. Research Aim: The aim of this study was to develop an optical sensor for cancer detection using elastic light scattering spectroscopy (ELSS). ELSS is a noninvasive optical technique that can be used to characterize the size and concentration of particles in a solution. Methodology: An optical probe was fabricated with a 100-渭m-diameter core and a 132-渭m centre-to-centre separation. The probe was used to measure the ELSS spectra of polystyrene spheres with diameters of 2, 0.8, and 0.413 渭m. The spectra were then analysed to determine the size and concentration of the spheres. Findings: The results showed that the optical probe was able to differentiate between the three different sizes of polystyrene spheres. The probe was also able to detect the presence of polystyrene spheres in suspension concentrations as low as 0.01%. Theoretical Importance: The results of this study demonstrate the potential of ELSS for cancer detection. ELSS is a noninvasive technique that can be used to characterize the size and concentration of cells in a tissue sample. This information can be used to identify cancer cells and assess the stage of the disease. Data Collection: The data for this study were collected by measuring the ELSS spectra of polystyrene spheres with different diameters. The spectra were collected using a spectrometer and a computer. Analysis Procedures: The ELSS spectra were analysed using a software program to determine the size and concentration of the spheres. The software program used a mathematical algorithm to fit the spectra to a theoretical model. Question Addressed: The question addressed by this study was whether ELSS could be used to detect cancer cells. The results of the study showed that ELSS could be used to differentiate between different sizes of cells, suggesting that it could be used to detect cancer cells. Conclusion: The findings of this research show the utility of ELSS in the early identification of cancer. ELSS is a noninvasive method for characterizing the number and size of cells in a tissue sample. To determine cancer cells and determine the disease's stage, this information can be employed. Further research is needed to evaluate the clinical performance of ELSS for cancer detection. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=elastic%20light%20scattering%20spectroscopy" title="elastic light scattering spectroscopy">elastic light scattering spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=polystyrene%20spheres%20in%20suspension" title=" polystyrene spheres in suspension"> polystyrene spheres in suspension</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20probe" title=" optical probe"> optical probe</a>, <a href="https://publications.waset.org/abstracts/search?q=fibre%20optics" title=" fibre optics"> fibre optics</a> </p> <a href="https://publications.waset.org/abstracts/167454/developing-optical-sensors-with-application-of-cancer-detection-by-elastic-light-scattering-spectroscopy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167454.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">82</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">407</span> The Impact of Sign Language on Generating and Maintaining a Mental Image</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yi-Shiuan%20Chiu">Yi-Shiuan Chiu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Deaf signers have been found to have better mental image performance than hearing nonsigners. The goal of this study was to investigate the ability to generate mental images, to maintain them, and to manipulate them in deaf signers of Taiwanese Sign Language (TSL). In the visual image task, participants first memorized digits formed in a cell of 4 脳 5 grids. After presenting a cue of Chinese digit character shown on the top of a blank cell, participants had to form a corresponding digit. When showing a probe, which was a grid containing a red circle, participants had to decide as quickly as possible whether the probe would have been covered by the mental image of the digit. The ISI (interstimulus interval) between cue and probe was manipulated. In experiment 1, 24 deaf signers and 24 hearing nonsigners were asked to perform image generation tasks (ISI: 200, 400 ms) and image maintenance tasks (ISI: 800, 2000 ms). The results showed that deaf signers had had an enhanced ability to generate and maintain a mental image. To explore the process of mental image, in experiment 2, 30 deaf signers and 30 hearing nonsigners were asked to do visual searching when maintaining a mental image. Between a digit image cue and a red circle probe, participants were asked to search a visual search task to see if a target triangle apex was directed to the right or left. When there was only one triangle in the searching task, the results showed that both deaf signers and hearing non-signers had similar visual searching performance in which the searching targets in the mental image locations got facilitates. However, deaf signers could maintain better and faster mental image performance than nonsigners. In experiment 3, we increased the number of triangles to 4 to raise the difficulty of the visual search task. The results showed that deaf participants performed more accurately in visual search and image maintenance tasks. The results suggested that people may use eye movements as a mnemonic strategy to maintain the mental image. And deaf signers had enhanced abilities to resist the interference of eye movements in the situation of fewer distractors. In sum, these findings suggested that deaf signers had enhanced mental image processing. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=deaf%20signers" title="deaf signers">deaf signers</a>, <a href="https://publications.waset.org/abstracts/search?q=image%20maintain" title=" image maintain"> image maintain</a>, <a href="https://publications.waset.org/abstracts/search?q=mental%20image" title=" mental image"> mental image</a>, <a href="https://publications.waset.org/abstracts/search?q=visual%20search" title=" visual search"> visual search</a> </p> <a href="https://publications.waset.org/abstracts/104952/the-impact-of-sign-language-on-generating-and-maintaining-a-mental-image" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104952.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">154</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=four-point%20probe&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=four-point%20probe&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=four-point%20probe&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=four-point%20probe&page=5">5</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=four-point%20probe&page=6">6</a></li> <li class="page-item"><a class="page-link" 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