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Search results for: recovery of cells

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text-center" style="font-size:1.6rem;">Search results for: recovery of cells</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4912</span> The Impact of Level and Consequence of Service Co-Recovery on Post-Recovery Satisfaction and Repurchase Intent</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chia-Ching%20Tsai">Chia-Ching Tsai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In service delivery, interpersonal interaction is the key to customer satisfaction, and apparently, the factor of human is critical in service delivery. Besides, customers quite care about the consequences of co-recovery. Thus, this research focuses on service failure caused by other customers and uses a 2x2 factorial design to investigate the impact of consequence and level of service co-recovery on post-recovery satisfaction and repurchase intent. 150 undergraduates were recruited as participants, and assigned to one of the four cells randomly. Every participant was requested to read the scenario and then rated the post-recovery satisfaction and repurchase intent. The results show that under the condition of failed co-recovery, level of co-recovery has no effect on post-recovery satisfaction, while under the condition of successful co-recovery, high-level co-recovery causes significantly higher post-recovery satisfaction than low-level co-recovery. Moreover, post-recovery satisfaction has significantly positive impact on repurchase intent. In the system of service delivery, customers interact with other customers frequently. Therefore, comparing with the literature, this research focuses on the service failure caused by other customers. This research also supplies a better understanding of customers’ view on consequences of different levels of co-recovery, which is helpful for the practitioners to make use of co-recovery. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=service%20failure" title="service failure">service failure</a>, <a href="https://publications.waset.org/abstracts/search?q=service%20co-recovery" title=" service co-recovery"> service co-recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=consequence%20of%20co-recovery" title=" consequence of co-recovery"> consequence of co-recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=level%20of%20co-recovery" title=" level of co-recovery"> level of co-recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=post-recovery%20satisfaction" title=" post-recovery satisfaction"> post-recovery satisfaction</a>, <a href="https://publications.waset.org/abstracts/search?q=repurchase%20intent" title=" repurchase intent"> repurchase intent</a> </p> <a href="https://publications.waset.org/abstracts/78948/the-impact-of-level-and-consequence-of-service-co-recovery-on-post-recovery-satisfaction-and-repurchase-intent" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78948.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">420</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">4911</span> Synthesis of Bismuth-Hyaluronic Acid Nanoparticles Containing Melittin Coated with Chitosan for Treating Eye Cancer Cells with Radiotherapy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Akbar%20Esmaeili">Akbar Esmaeili</a>, <a href="https://publications.waset.org/abstracts/search?q=Fateme%20Dadashi"> Fateme Dadashi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Bismuth can increase radiation and reduce the dose of radiotherapy. On the other hand, hyaluronic acid plays a role in healing damaged cells, and melittin has been used to destroy cancer cells. This research aims to destroy eye cancer cells and accelerate the recovery of damaged healthy cells during treatment. In this research, we used this nanoparticle, the sol-gel method. According to the optimization process that was carried out, we obtained the optimal value of the desired variables for the manufacture of nanoparticles. The advantage of doing this is reducing the amount of medicine used, as a result of reducing the number of side effects during the treatment and using melittin as an anti-eye cancer drug and the presence of hyaluronic acid to accelerate the recovery of cells, as well as coating the bismuth nanoparticle with chitosan to increase the half-life of the nanoparticle and prevent its adhesion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=synthesis" title="synthesis">synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=nanoparticles" title=" nanoparticles"> nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=coated" title=" coated"> coated</a>, <a href="https://publications.waset.org/abstracts/search?q=cancer" title=" cancer"> cancer</a> </p> <a href="https://publications.waset.org/abstracts/186202/synthesis-of-bismuth-hyaluronic-acid-nanoparticles-containing-melittin-coated-with-chitosan-for-treating-eye-cancer-cells-with-radiotherapy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/186202.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">61</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">4910</span> The Initiator Matters in Service Co-Recovery: Investigation on Attribution and Satisfaction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chia-Ching%20Tsai">Chia-Ching Tsai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the literature, the positive effect of service co-recovery has been evidenced, and which customers’ attribution is the key successful factor has also been indicated. There is also literature investigating on initiation of co-recovery for finding out the superior way to co-recovery, and indicating co-recovery initiated by employees causes better effect of co-recovery. This research postulates the consequences of co-recovery by different initiators affect customers’ attribution and the resultant results. Thus, this research uses a 3x2 factorial design to investigate the impact of initiator of co-recovery and consequence of co-recovery on customers’ attribution and post-recovery satisfaction. The results show initiation of co-recovery has a significant influence on internal attribution, and the employee initiator causes the highest internal attribution. The consequences of co-recovery interact with initiators of co-recovery on internal attribution significantly. Moreover, internal attribution significantly affects post-recovery satisfaction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=service%20co-recovery" title="service co-recovery">service co-recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=initiation%20of%20co-recovery" title=" initiation of co-recovery"> initiation of co-recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=attribution" title=" attribution"> attribution</a>, <a href="https://publications.waset.org/abstracts/search?q=post-recovery%20satisfaction" title=" post-recovery satisfaction"> post-recovery satisfaction</a> </p> <a href="https://publications.waset.org/abstracts/78185/the-initiator-matters-in-service-co-recovery-investigation-on-attribution-and-satisfaction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78185.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">263</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">4909</span> Inactivation of Listeria innocua ATCC 33092 by Gas-Phase Plasma Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Z.%20Herceg">Z. Herceg</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Stulic"> V. Stulic</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Vukusic"> T. Vukusic</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Rezek%20Jambrak"> A. Rezek Jambrak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> High voltage electrical discharge plasmas are new nonthermal developing techniques used for water decontamination. To the full understanding of cell inactivation mechanisms, this study brings inactivation, recovery and cellular leakage of L. innocua cells before and after the treatment. Bacterial solution (200 mL) of L. innocua was treated in a glass reactor with a point-to-plate electrode configuration (high voltage electrode-titanium wire, was in the gas phase and grounded electrode was in the liquid phase). Argon was injected into the headspace of the reactor at the gas flow of 5 L/min. Frequency of 60, 90 and 120 Hz, time of 5 and 10 min, positive polarity and conductivity of media of 100 µS/cm were chosen to define listed parameters. With a longer treatment time inactivation was higher as well as the increase in cellular leakage. Despite total inactivation recovery of cells occurred probably because of a high leakage of proteins, compared to lower leakage of nucleic acids (DNA and RNA). In order to define mechanisms of inactivation further research is needed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Listeria%20innocua%20ATCC%2033092" title="Listeria innocua ATCC 33092">Listeria innocua ATCC 33092</a>, <a href="https://publications.waset.org/abstracts/search?q=inactivation" title=" inactivation"> inactivation</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20phase%20plasma" title=" gas phase plasma"> gas phase plasma</a>, <a href="https://publications.waset.org/abstracts/search?q=cellular%20leakage" title=" cellular leakage"> cellular leakage</a>, <a href="https://publications.waset.org/abstracts/search?q=recovery%20of%20cells" title=" recovery of cells"> recovery of cells</a> </p> <a href="https://publications.waset.org/abstracts/90157/inactivation-of-listeria-innocua-atcc-33092-by-gas-phase-plasma-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90157.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">176</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">4908</span> Comparative Stem Cells Therapy for Regeneration of Liver Fibrosis </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20M.%20Imam">H. M. Imam</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20M.%20Rezk"> H. M. Rezk</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20F.%20Tohamy"> A. F. Tohamy </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Human umbilical cord blood (HUCB) is considered as a unique source for stem cells. HUCB contain different types of progenitor cells which could differentiate into hepatocytes. Aims: To investigate the potential of rat's liver damage repair using human umbilical cord mesenchymal stem cells (hUCMSCs). We investigated the feasibility for hUCMSCs in recovery from liver damage. Moreover, investigating fibrotic liver repair and using the CCl4-induced model for liver damage in the rat. Methods: Rats were injected with 0.5 ml/kg CCl4 to induce liver damage and progressive liver fibrosis. hUCMSCs were injected into the rats through the tail vein; Stem cells were transplanted at a dose of 1×106 cells/rat after 72 hours of CCl4 injection without receiving any immunosuppressant. After (6 and 8 weeks) of transplantation, blood samples were collected to assess liver functions (ALT, AST, GGT and ALB) and level of Procollagen III as a liver fibrosis marker. In addition, hepatic tissue regeneration was assessed histopathologically and immunohistochemically using antihuman monoclonal antibodies against CD34, CK19 and albumin. Results: Biochemical and histopathological analysis showed significantly increased recovery from liver damage in the transplanted group. In addition, HUCB stem cells transdifferentiated into functional hepatocytes in rats with hepatic injury which results in improving liver structure and function. Conclusion: Our findings suggest that transplantation of hUCMSCs may be a novel therapeutic approach for treating liver fibrosis. Therefore, hUCMSCs are a potential option for treatment of liver cirrhosis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20tetra%20chloride" title="carbon tetra chloride">carbon tetra chloride</a>, <a href="https://publications.waset.org/abstracts/search?q=liver%20fibrosis" title=" liver fibrosis"> liver fibrosis</a>, <a href="https://publications.waset.org/abstracts/search?q=mesenchymal%20stem%20cells" title=" mesenchymal stem cells"> mesenchymal stem cells</a>, <a href="https://publications.waset.org/abstracts/search?q=rat" title=" rat"> rat</a> </p> <a href="https://publications.waset.org/abstracts/27746/comparative-stem-cells-therapy-for-regeneration-of-liver-fibrosis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27746.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">342</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">4907</span> Sustainable and Efficient Recovery of Polyhydroxyalkanoate Polymer from Cupriavidus necator Using Environment Friendly Solvents </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Geeta%20Gahlawat">Geeta Gahlawat</a>, <a href="https://publications.waset.org/abstracts/search?q=Sanjeev%20Kumar%20Soni"> Sanjeev Kumar Soni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An imprudent use of environmentally hazardous petrochemical-based plastics and limited availability of fossil fuels have provoked research interests towards production of biodegradable plastics - polyhydroxyalkanoate (PHAs). However, the industrial application of PHAs based products is primarily restricted by their high cost of recovery and extraction protocols. Moreover, solvents used for the extraction and purification are toxic and volatile which causes adverse environmental hazards. Development of efficient downstream recovery strategies along with utilization of non-toxic solvents will accelerate their commercialization. In this study, various extraction strategies were designed for sustainable and cost-effective recovery of PHAs from Cupriavidus necator using non-toxic environment friendly solvents viz. 1,2-propylene carbonate, ethyl acetate, isoamyl alcohol, butyl acetate. The effect of incubation time i.e. 10, 30 and 50 min and temperature i.e. 60, 80, 100, 120°C was tested to identify the most suitable solvent. PHAs extraction using a recyclable solvent, 1,2 propylene carbonate, showed the highest recovery yield (90%) and purity (93%) at 120°C and 30 min incubation. Ethyl acetate showed the better capacity to recover PHAs from cells than butyl acetate. Extraction with ethyl acetate exhibited high recovery yield and purity of 96% and 92%, respectively at 100°C. Effect of non-toxic surfactant such as linear alkylbenzene sulfonic acid (LAS) was also studied at 40, 60 and 80°C, and detergent pH range of 3.0, 5.0, 7.0 and 9.0 for the extraction of PHAs from the cells. LAS gave highest yield of 86% and purity of 88% at temperature 80°C and 5.0 pH. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=polyhydroxyalkanoates" title="polyhydroxyalkanoates">polyhydroxyalkanoates</a>, <a href="https://publications.waset.org/abstracts/search?q=Cupriavidus%20necator" title=" Cupriavidus necator"> Cupriavidus necator</a>, <a href="https://publications.waset.org/abstracts/search?q=extraction" title=" extraction"> extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=recovery%20yield" title=" recovery yield"> recovery yield</a> </p> <a href="https://publications.waset.org/abstracts/80301/sustainable-and-efficient-recovery-of-polyhydroxyalkanoate-polymer-from-cupriavidus-necator-using-environment-friendly-solvents" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80301.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">509</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">4906</span> Autonomic Recovery Plan with Server Virtualization</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Hameed">S. Hameed</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Anwer"> S. Anwer</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Saad"> M. Saad</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Saady"> M. Saady</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For autonomic recovery with server virtualization, a cogent plan that includes recovery techniques and backups with virtualized servers can be developed instead of assigning an idle server to backup operations. In addition to hardware cost reduction and data center trail, the disaster recovery plan can ensure system uptime and to meet objectives of high availability, recovery time, recovery point, server provisioning, and quality of services. This autonomic solution would also support disaster management, testing, and development of the recovery site. In this research, a workflow plan is proposed for supporting disaster recovery with virtualization providing virtual monitoring, requirements engineering, solution decision making, quality testing, and disaster management. This recovery model would make disaster recovery a lot easier, faster, and less error prone. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=autonomous%20intelligence" title="autonomous intelligence">autonomous intelligence</a>, <a href="https://publications.waset.org/abstracts/search?q=disaster%20recovery" title=" disaster recovery"> disaster recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=cloud%20computing" title=" cloud computing"> cloud computing</a>, <a href="https://publications.waset.org/abstracts/search?q=server%20virtualization" title=" server virtualization"> server virtualization</a> </p> <a href="https://publications.waset.org/abstracts/129654/autonomic-recovery-plan-with-server-virtualization" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/129654.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">162</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">4905</span> Positive Effects of Aerobic Exercise after Bone Marrow Stem Cell Transplantation on Recovery of Dopaminergic Neurons and Promotion of Angiogenesis Markers in the Striatum of Parkinsonian Rats</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20A.%20Hashemvarzi">S. A. Hashemvarzi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Heidarianpour"> A. Heidarianpour</a>, <a href="https://publications.waset.org/abstracts/search?q=Z.%20Fallahmohammadi"> Z. Fallahmohammadi</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Pourghasem"> M. Pourghasem</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Kaviani"> M. Kaviani </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Parkinson’s disease (PD) is a progressive neurodegenerative in the central nervous system characterized by the loss of dopaminergic neurons in the substantia nigra resulting in loss of dopamine release in the striatum. Non-drug treatment options such as Stem cell transplantation and exercise have been considered for treatment of Parkinson's disease. Purpose: The purpose of this study was to evaluate the effect of aerobic exercise after bone marrow stem cells transplantation on recovery of dopaminergic neurons and promotion of angiogenesis markers in the striatum of parkinsonian rats. Materials and Methods: 42 male Wistar rats were divided randomly into six groups: Normal (N), Sham (S), Parkinson’s (P), Stem cells transplanted Parkinson’s (SP), Exercised Parkinson’s (EP) and Stem cells transplanted + Exercised Parkinson’s (SEP). To create a model of Parkinson's, the striatum was destroyed by injection of 6-hydroxy-dopamine into the striatum through stereotaxic apparatus. Stem cells were derived from the bone marrow of femur and tibia of male rats with 6-8 weeks old. After cultivation, approximately 5×105 cells in 5 microliter of medium were injected into the striatum of rats through the channel. Aerobic exercise was included 8 weeks of running on the treadmill with a speed of 15 meters per minute. At the end, all subjects were decapitated and striatum tissues were separately isolated for measurement of vascular endothelial growth factor (VEGF), dopamine (DA) and tyrosine hydroxylase (TH) levels. Results: VEGF, DA and TH levels in the striatum of parkinsonian rats significantly increased in treatment groups (SP, EP and SEP), especially in SEP group compared to P group after treatment (P<0.05). Conclusion: The findings implicate that the BMSCs transplantation in combination with exercise would have synergistic effects leading to functional recovery, dopaminergic neurons recovery and promotion of angiogenesis marker in the striatum of parkinsonian rats. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=stem%20cells" title="stem cells">stem cells</a>, <a href="https://publications.waset.org/abstracts/search?q=treadmill%20training" title=" treadmill training"> treadmill training</a>, <a href="https://publications.waset.org/abstracts/search?q=neurotrophic%20factors" title=" neurotrophic factors"> neurotrophic factors</a>, <a href="https://publications.waset.org/abstracts/search?q=Parkinson" title=" Parkinson"> Parkinson</a> </p> <a href="https://publications.waset.org/abstracts/31805/positive-effects-of-aerobic-exercise-after-bone-marrow-stem-cell-transplantation-on-recovery-of-dopaminergic-neurons-and-promotion-of-angiogenesis-markers-in-the-striatum-of-parkinsonian-rats" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31805.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">342</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">4904</span> Removal of Samarium in Environmental Water Samples by Modified Yeast Cells</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Homayon%20Ahmad%20Panahi">Homayon Ahmad Panahi</a>, <a href="https://publications.waset.org/abstracts/search?q=Seyed%20Mehdi%20Seyed%20Nejad"> Seyed Mehdi Seyed Nejad</a>, <a href="https://publications.waset.org/abstracts/search?q=Elham%20Moniri"> Elham Moniri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A novel bio-adsorbent is fabricated by attaching a cibacron blue to yeast cells. The modified bio-sorbent has been characterized by some techniques like Fourier transform infrared spectroscopy (FT-IR) and elemental analysis (CHN) and applied for the preconcentration and determination of samarium from aqueous water samples. The best pH value for adsorption of the brilliant crecyle blue by yeast cells- cibacron blue was 7. The sorption capacity of modified biosorbent was 18.5 mg. g⁻¹. A recovery of 95.3% was obtained for Sm(III) when eluted with 0.5 M nitric acid. The method was applied for Sm(III) preconcentration and determination in river water sample. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=samarium" title="samarium">samarium</a>, <a href="https://publications.waset.org/abstracts/search?q=solid%20phase%20extraction" title=" solid phase extraction"> solid phase extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=yeast%20cells" title=" yeast cells"> yeast cells</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20sample" title=" water sample"> water sample</a>, <a href="https://publications.waset.org/abstracts/search?q=removal" title=" removal"> removal</a> </p> <a href="https://publications.waset.org/abstracts/76122/removal-of-samarium-in-environmental-water-samples-by-modified-yeast-cells" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/76122.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">255</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">4903</span> Chemical Modification of Biosorbent for Prconcentation of Cadmium in Water Sample</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Homayon%20Ahmad%20Panahi">Homayon Ahmad Panahi</a>, <a href="https://publications.waset.org/abstracts/search?q=Niusha%20Mohseni%20Darabi"> Niusha Mohseni Darabi</a>, <a href="https://publications.waset.org/abstracts/search?q=Elham%20Moniri"> Elham Moniri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A new biosorbent is prepared by coupling a cibacron blue to yeast cells. The modified yeast cells with cibacron blue has been characterized by Fourier transform infrared spectroscopy (FT-IR) and elemental analysis and applied for the preconcentration and solid phase extraction of trace cadmium ion from water samples. The optimum pH value for sorption of the cadmium ions by yeast cells- cibacron blue was 5.5. The sorption capacity of modified biosorbent was 45 mg. g−1. A recovery of 98.2% was obtained for Cd(II) when eluted with 0.5 M nitric acid. The method was applied for Cd(II) preconcentration and determination in sea water sample. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=solid%20phase%20extraction" title="solid phase extraction">solid phase extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=yeast%20cells" title=" yeast cells"> yeast cells</a>, <a href="https://publications.waset.org/abstracts/search?q=Nickl" title=" Nickl"> Nickl</a>, <a href="https://publications.waset.org/abstracts/search?q=isotherm%20study" title=" isotherm study"> isotherm study</a> </p> <a href="https://publications.waset.org/abstracts/52871/chemical-modification-of-biosorbent-for-prconcentation-of-cadmium-in-water-sample" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/52871.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">264</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">4902</span> Immature Platelet Fraction and Immature Reticulocyte Fraction as Early Predictors of Hematopoietic Recovery Post Stem Cell Transplantation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aditi%20Mittal">Aditi Mittal</a>, <a href="https://publications.waset.org/abstracts/search?q=Nishit%20Gupta"> Nishit Gupta</a>, <a href="https://publications.waset.org/abstracts/search?q=Tina%20Dadu"> Tina Dadu</a>, <a href="https://publications.waset.org/abstracts/search?q=Anil%20Handoo"> Anil Handoo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Hematopoietic stem cell transplantation (HSCT) is a curative treatment done for hematologic malignancies and other clinical conditions. Its main objective is to reconstitute the hematopoietic system of the recipient by administering an infusion of donor hematopoietic stem cells. Transplant engraftment is the first sign of bone marrow recovery. The main objective of this study is to assess immature platelet fraction (IPF) and immature reticulocyte fraction (IRF) as early indicators of post-hematopoietic stem cell transplant engraftment. Methods: Patients of all age groups and both genders undergoing both autologous and allogeneic transplants were included in the study. All the CBC samples were run on Mindray CAL-8000 (BC-6800 plus; Shenzhen, China) analyser and assessed for IPF and IRF. Neutrophil engraftment was defined as the first of three consecutive days with an ANC >0.5 x 109/L and platelet engraftment with a count >20 x 109/L. The cut-off values for IRF were calculated as 13.5% with a CV of 5% and for IPF was 19% with a CV of 12%. Results: The study sample comprised 200 patients, of whom 116 had undergone autologous HSCT, and 84 had undergone allogeneic HSCT. We observed that IRF anticipated the neutrophil recovery by an average of 5 days prior to IPF. Though there was no significant variation in IPF and IRF for the prediction of platelet recovery, IRF was preceded by 1 or 2 days to IPF in 25% of cases. Conclusions: Both IPF and IRF can be used as reliable parameters as predictors for post-transplant engraftment; however, IRF seems to be more reliable than IPF as a simple, inexpensive, and widely available tool for predicting marrow recovery several days before engraftment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=transplantation" title="transplantation">transplantation</a>, <a href="https://publications.waset.org/abstracts/search?q=stem%20cells" title=" stem cells"> stem cells</a>, <a href="https://publications.waset.org/abstracts/search?q=reticulocyte" title=" reticulocyte"> reticulocyte</a>, <a href="https://publications.waset.org/abstracts/search?q=engraftment" title=" engraftment"> engraftment</a> </p> <a href="https://publications.waset.org/abstracts/152256/immature-platelet-fraction-and-immature-reticulocyte-fraction-as-early-predictors-of-hematopoietic-recovery-post-stem-cell-transplantation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/152256.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">89</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">4901</span> Measurements of Recovery Stress and Recovery Strain of Ni-Based Shape Memory Alloys </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=W.%20J.%20Kim">W. J. Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The behaviors of the recovery stress and strain of an ultrafine-grained Ni-50.2 at.% Ti alloy prepared by high-ratio differential speed rolling (HRDSR) were examined by a specially designed tensile-testing set up, and the factors that influence the recovery stress and strain were studied. After HRDSR, both the recovery stress and strain were enhanced compared to the initial condition. The constitutive equation showing that the maximum recovery stress is a sole function of the recovery strain was developed based on the experimental data. The recovery strain increased as the yield stress increased. The maximum recovery stress increased with an increase in yield stress. The residual recovery stress was affected by the yield stress as well as the austenite-to-martensite transformation temperature. As the yield stress increased and as the martensitic transformation temperature decreased, the residual recovery stress increased. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=high-ratio%20differential%20speed%20rolling" title="high-ratio differential speed rolling">high-ratio differential speed rolling</a>, <a href="https://publications.waset.org/abstracts/search?q=tensile%20testing" title=" tensile testing"> tensile testing</a>, <a href="https://publications.waset.org/abstracts/search?q=severe%20plastic%20deformation" title=" severe plastic deformation"> severe plastic deformation</a>, <a href="https://publications.waset.org/abstracts/search?q=shape%20memory%20alloys" title=" shape memory alloys"> shape memory alloys</a> </p> <a href="https://publications.waset.org/abstracts/69337/measurements-of-recovery-stress-and-recovery-strain-of-ni-based-shape-memory-alloys" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69337.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">4900</span> Blogging Towards Recovery: The Benefits of Blogging about Recovery</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jayme%20R.%20Swanke">Jayme R. Swanke</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study examined the benefits of maintaining public blogs about substance use disorder recovery. The data analyzed for this study included statements about the benefits derived by individuals who blogged about their recovery. The researcher developed classifications of statements that expressed what these individuals gained from blogging into common themes and developed an emerging theory based on these patterns. The findings indicate that these individuals in recovery benefit from blogging by developing connections, processing emotions, remaining accountable, as well as enjoying. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=substance%20use%20disorder%20recovery" title="substance use disorder recovery">substance use disorder recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=connection" title=" connection"> connection</a>, <a href="https://publications.waset.org/abstracts/search?q=blogging" title=" blogging"> blogging</a>, <a href="https://publications.waset.org/abstracts/search?q=accountability" title=" accountability"> accountability</a>, <a href="https://publications.waset.org/abstracts/search?q=processing%20emotions" title=" processing emotions"> processing emotions</a> </p> <a href="https://publications.waset.org/abstracts/143240/blogging-towards-recovery-the-benefits-of-blogging-about-recovery" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/143240.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">180</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">4899</span> Adaptive Discharge Time Control for Battery Operation Time Enhancement</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jong-Bae%20Lee">Jong-Bae Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Seongsoo%20Lee"> Seongsoo Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper proposes an adaptive discharge time control method to balance cell voltages in alternating battery cell discharging method. In the alternating battery cell discharging method, battery cells are periodically discharged in turn. Recovery effect increases battery output voltage while the given battery cell rests without discharging, thus battery operation time of target system increases. However, voltage mismatch between cells leads two problems. First, voltage difference between cells induces inter-cell current with wasted power. Second, it degrades battery operation time, since system stops when any cell reaches to the minimum system operation voltage. To solve this problem, the proposed method adaptively controls cell discharge time to equalize both cell voltages. In the proposed method, battery operation time increases about 19%, while alternating battery cell discharging method shows about 7% improvement. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=battery" title="battery">battery</a>, <a href="https://publications.waset.org/abstracts/search?q=recovery%20effect" title=" recovery effect"> recovery effect</a>, <a href="https://publications.waset.org/abstracts/search?q=low-power" title=" low-power"> low-power</a>, <a href="https://publications.waset.org/abstracts/search?q=alternating%20battery%20cell%20discharging" title=" alternating battery cell discharging"> alternating battery cell discharging</a>, <a href="https://publications.waset.org/abstracts/search?q=adaptive%20discharge%20time%20control" title=" adaptive discharge time control"> adaptive discharge time control</a> </p> <a href="https://publications.waset.org/abstracts/2374/adaptive-discharge-time-control-for-battery-operation-time-enhancement" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2374.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">352</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">4898</span> Assessing Storage of Stability and Mercury Reduction of Freeze-Dried Pseudomonas putida within Different Types of Lyoprotectant</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20A.%20M.%20Azoddein">A. A. M. Azoddein</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Nuratri"> Y. Nuratri</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20B.%20Bustary"> A. B. Bustary</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20A.%20M.%20Azli"> F. A. M. Azli</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20C.%20Sayuti"> S. C. Sayuti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> <em>Pseudomonas putida</em> is a potential strain in biological treatment to remove mercury contained in the effluent of petrochemical industry due to its mercury reductase enzyme that able to reduce ionic mercury to elementary mercury. Freeze-dried <em>P. putida </em>allows easy, inexpensive shipping, handling and high stability of the product. This study was aimed to freeze dry <em>P. putida </em>cells with addition of lyoprotectant. Lyoprotectant was added into the cells suspension prior to freezing. Dried <em>P. putida </em>obtained was then mixed with synthetic mercury. Viability of recovery <em>P. putida</em> after freeze dry was significantly influenced by the type of lyoprotectant. Among the lyoprotectants, tween 80/ sucrose was found to be the best lyoprotectant. Sucrose able to recover more than 78% (6.2E+09 CFU/ml) of the original cells (7.90E+09CFU/ml) after freeze dry and able to retain 5.40E+05 viable cells after 4 weeks storage in 4oC without vacuum. Polyethylene glycol (PEG) pre-treated freeze dry cells and broth pre-treated freeze dry cells after freeze-dry recovered more than 64% (5.0 E+09CFU/ml) and &gt;0.1% (5.60E+07CFU/ml). Freeze-dried <em>P. putida</em> cells in PEG and broth cannot survive after 4 weeks storage. Freeze dry also does not really change the pattern of growth <em>P. putida</em> but extension of lag time was found 1 hour after 3 weeks of storage. Additional time was required for freeze-dried <em>P. putida</em> cells to recover before introduce freeze-dried cells to more complicated condition such as mercury solution. The maximum mercury reduction of PEG pre-treated freeze-dried cells after freeze dry and after storage 3 weeks was 56.78% and 17.91%. The maximum of mercury reduction of tween 80/sucrose pre-treated freeze-dried cells after freeze dry and after storage 3 weeks were 26.35% and 25.03%. Freeze dried <em>P. putida</em> was found to have lower mercury reduction compare to the fresh <em>P. putida</em> that has been growth in agar. Result from this study may be beneficial and useful as initial reference before commercialize freeze-dried <em>P. putida</em>. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pseudomonas%20putida" title="Pseudomonas putida">Pseudomonas putida</a>, <a href="https://publications.waset.org/abstracts/search?q=freeze-dry" title=" freeze-dry"> freeze-dry</a>, <a href="https://publications.waset.org/abstracts/search?q=PEG" title=" PEG"> PEG</a>, <a href="https://publications.waset.org/abstracts/search?q=tween80%2FSucrose" title=" tween80/Sucrose"> tween80/Sucrose</a>, <a href="https://publications.waset.org/abstracts/search?q=mercury" title=" mercury"> mercury</a>, <a href="https://publications.waset.org/abstracts/search?q=cell%20viability" title=" cell viability"> cell viability</a> </p> <a href="https://publications.waset.org/abstracts/38542/assessing-storage-of-stability-and-mercury-reduction-of-freeze-dried-pseudomonas-putida-within-different-types-of-lyoprotectant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38542.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">355</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">4897</span> Platform Development for Vero Cell Culture on Microcarriers Using Dissociation-Reassociation Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Thanunthon%20Bowornsakulwong">Thanunthon Bowornsakulwong</a>, <a href="https://publications.waset.org/abstracts/search?q=Charukorn%20Charukarn"> Charukorn Charukarn</a>, <a href="https://publications.waset.org/abstracts/search?q=Franck%20Courtes"> Franck Courtes</a>, <a href="https://publications.waset.org/abstracts/search?q=Panit%20Kitsubun"> Panit Kitsubun</a>, <a href="https://publications.waset.org/abstracts/search?q=Lalintip%20Horcharoen"> Lalintip Horcharoen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Vero cell is a continuous cell line that is widely used for the production of viral vaccines. However, due to its adherent characteristic, scaling up strategy in large-scale production remains complicated and thus limited. Consequently, suspension-like Vero cell culture processes based on microcarriers have been introduced and employed while also providing increased surface area per volume unit. However, harvesting Vero cells from microcarriers is a huge challenge due to difficulties in cells detaching, lower recovery yield, time-consuming and dissociation agent carry-over. To overcome these problems, we developed a dissociation-association platform technology for detaching and re-attaching cells during subculturing from microcarriers to microcarriers, which will be conveniently applied to seed trains strategies in large scale bioreactors. Herein, Hillex-2 was used to culture Vero cells in serum-containing media using spinner flasks as a scale-down model. The overall confluency of cells on microcarriers was observed using inverted microscope, and the sample cells were daily detached in order to obtain the kinetics data. The metabolites consumption and by-products formation were determined by Nova Biomedical BioprofileFlex. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dissociation-reassociation" title="dissociation-reassociation">dissociation-reassociation</a>, <a href="https://publications.waset.org/abstracts/search?q=microcarrier" title=" microcarrier"> microcarrier</a>, <a href="https://publications.waset.org/abstracts/search?q=scale%20up" title=" scale up"> scale up</a>, <a href="https://publications.waset.org/abstracts/search?q=Vero%20cell" title=" Vero cell"> Vero cell</a> </p> <a href="https://publications.waset.org/abstracts/95345/platform-development-for-vero-cell-culture-on-microcarriers-using-dissociation-reassociation-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/95345.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">133</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">4896</span> Effect of Amiodarone on the Thyroid Gland of Adult Male Albino Rat and the Possible Protective Role of Vitamin E Supplementation: A Histological and Ultrastructural Study </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ibrahim%20Abdulla%20Labib">Ibrahim Abdulla Labib</a>, <a href="https://publications.waset.org/abstracts/search?q=Medhat%20Mohamed%20Morsy"> Medhat Mohamed Morsy</a>, <a href="https://publications.waset.org/abstracts/search?q=Gamal%20Hosny"> Gamal Hosny</a>, <a href="https://publications.waset.org/abstracts/search?q=Hanan%20Dawood%20Yassa"> Hanan Dawood Yassa</a>, <a href="https://publications.waset.org/abstracts/search?q=Gaber%20Hassan"> Gaber Hassan </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Amiodarone is a very effective drug, widely used for arrhythmia. Unfortunately it has many side effects involving many organs especially thyroid gland. The current work was conducted to elucidate the effect of amiodarone on the thyroid gland and the possible protective role of vitamin E. Fifty adult male albino rats weighed 200 – 250 grams were divided into five groups; ten rats each. Group I (Control): Five rats were sacrificed after three weeks and five rats were sacrificed after six weeks. Group II (Sham control): Each rat received sunflower oil orally; the solvent of vitamin E for three weeks. Group III (Amiodarone-treated): each rat received an oral dose of amiodarone; 150 mg/kg/day for three weeks. Group IV (Recovery): Each rat received amiodarone as group III then the drug was stopped for three weeks to evaluate recovery. Group V (Amiodarone + Vitamin E-treated): Each rat received amiodarone as group III followed by 100 mg/kg/day vitamin E orally for three weeks. Thyroid gland of the sacrificed animals were dissected out and prepared for light and electron microscopic studies. Amiodarone administration resulted in loss of normal follicular architecture as many follicles appeared either shrunken, empty or contained scanty pale colloid. Some follicles appeared lined by more than one layer of cells while others showed interruption of their membrane. Masson's Trichrome stained sections showed increased collagen fibers in between the thyroid follicles. Ultrastructurally, the apical border of the follicular cells showed few irregular detached microvilli. The nuclei of the follicular cells were almost irregular with chromatin condensation. The cytoplasm of most follicular cells revealed numerous dilated rough endoplasmic reticulum with numerous lysosomes. After three weeks of stopping amiodarone, the follicles were nearly regular in outline. Some follicles were filled with homogenous eosinophilic colloid and others had shrunken pale colloid or were empty. Some few follicles showed exfoliated cells in their lumina and others were still lined by more than one layer of follicular cells. Moderate amounts of collagen fibers were observed in-between thyroid follicles. Ultrastructurally, many follicular cells had rounded euchromatic nucleui, moderate number of lysosomes and moderately dilated rough endoplasmic reticulum. However, few follicular cells still showing irregular nucleui, dilated rough endoplasmic reticulum and many cytoplasmic vacuoles. Administration of vitamin E with amiodarone for three weeks resulted in obvious structural improvement. Most of the follicles were lined by a single layer of cuboidal cells and the lumina were filled with homogenous eosinophilic colloid with very few vacuolations. The majority of follicular cells had rounded nuclei with occasional detection of ballooned cells and dark nuclei. Scanty collagen fibers were detected among thyroid follicles. Ultrastructurally, most follicular cells exhibited rounded euchromatic nuclei with few short microvilli were projecting into the colloid. Few lysosomes were also noticed. It was concluded that amiodarone administration leads to many adverse histological changes in the thyroid gland. Some of these changes are reversible during the recovery period however concomitant vitamin E administration with amiodarone has a major protective role in preventing many of these changes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amiodarone" title="amiodarone">amiodarone</a>, <a href="https://publications.waset.org/abstracts/search?q=recovery" title=" recovery"> recovery</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrastructure" title=" ultrastructure"> ultrastructure</a>, <a href="https://publications.waset.org/abstracts/search?q=vitamin%20E." title=" vitamin E."> vitamin E.</a> </p> <a href="https://publications.waset.org/abstracts/26961/effect-of-amiodarone-on-the-thyroid-gland-of-adult-male-albino-rat-and-the-possible-protective-role-of-vitamin-e-supplementation-a-histological-and-ultrastructural-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26961.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">351</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">4895</span> 3D-Printed Collagen/Chitosan Scaffolds Loaded with Exosomes Derived from Neural Stem Cells Pretreated with Insulin Growth Factor-1 for Neural Regeneration after Traumatic Brain Injury</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xiao-Yin%20Liu">Xiao-Yin Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Liang-Xue%20Zhou"> Liang-Xue Zhou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Traumatic brain injury (TBI), as a kind of nerve trauma caused by an external force, affects people all over the world and is a global public health problem. Although there are various clinical treatments for brain injury, including surgery, drug therapy, and rehabilitation therapy, the therapeutic effect is very limited. To improve the therapeutic effect of TBI, scaffolds combined with exosomes are a promising but challenging method for TBI repair. In this study, we examined whether a novel 3D-printed collagen/chitosan scaffold/exosomes derived from neural stem cells (NSCs) pretreated with insulin growth factor-1 (IGF-I) scaffolds (3D-CC-INExos) could be used to improve TBI repair and functional recovery after TBI. Our results showed that composite scaffolds of collagen-, chitosan- and exosomes derived from NSCs pretreated with IGF-I (INExos) could continuously release the exosomes for two weeks. In the rat TBI model, 3D-CC-INExos scaffold transplantation significantly improved motor and cognitive function after TBI, as assessed by the Morris water maze test and modified neurological severity scores. In addition, immunofluorescence staining and transmission electron microscopy showed that the recovery of damaged nerve tissue in the injured area was significantly improved by 3D-CC-INExos implantation. In conclusion, our data suggest that 3D-CC-INExos might provide a potential strategy for the treatment of TBI and lay a solid foundation for clinical translation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=traumatic%20brain%20injury" title="traumatic brain injury">traumatic brain injury</a>, <a href="https://publications.waset.org/abstracts/search?q=exosomes" title=" exosomes"> exosomes</a>, <a href="https://publications.waset.org/abstracts/search?q=insulin%20growth%20factor-1" title=" insulin growth factor-1"> insulin growth factor-1</a>, <a href="https://publications.waset.org/abstracts/search?q=neural%20stem%20cells" title=" neural stem cells"> neural stem cells</a>, <a href="https://publications.waset.org/abstracts/search?q=collagen" title=" collagen"> collagen</a>, <a href="https://publications.waset.org/abstracts/search?q=chitosan" title=" chitosan"> chitosan</a>, <a href="https://publications.waset.org/abstracts/search?q=3D%20printing" title=" 3D printing"> 3D printing</a>, <a href="https://publications.waset.org/abstracts/search?q=neural%20regeneration" title=" neural regeneration"> neural regeneration</a>, <a href="https://publications.waset.org/abstracts/search?q=angiogenesis" title=" angiogenesis"> angiogenesis</a>, <a href="https://publications.waset.org/abstracts/search?q=functional%20recovery" title=" functional recovery"> functional recovery</a> </p> <a href="https://publications.waset.org/abstracts/168527/3d-printed-collagenchitosan-scaffolds-loaded-with-exosomes-derived-from-neural-stem-cells-pretreated-with-insulin-growth-factor-1-for-neural-regeneration-after-traumatic-brain-injury" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/168527.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">80</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">4894</span> In silico Repopulation Model of Various Tumour Cells during Treatment Breaks in Head and Neck Cancer Radiotherapy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Loredana%20G.%20Marcu">Loredana G. Marcu</a>, <a href="https://publications.waset.org/abstracts/search?q=David%20Marcu"> David Marcu</a>, <a href="https://publications.waset.org/abstracts/search?q=Sanda%20M.%20Filip"> Sanda M. Filip</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Advanced head and neck cancers are aggressive tumours, which require aggressive treatment. Treatment efficiency is often hindered by cancer cell repopulation during radiotherapy, which is due to various mechanisms triggered by the loss of tumour cells and involves both stem and differentiated cells. The aim of the current paper is to present in silico simulations of radiotherapy schedules on a virtual head and neck tumour grown with biologically realistic kinetic parameters. Using the linear quadratic formalism of cell survival after radiotherapy, altered fractionation schedules employing various treatment breaks for normal tissue recovery are simulated and repopulation mechanism implemented in order to evaluate the impact of various cancer cell contribution on tumour behaviour during irradiation. The model has shown that the timing of treatment breaks is an important factor influencing tumour control in rapidly proliferating tissues such as squamous cell carcinomas of the head and neck. Furthermore, not only stem cells but also differentiated cells, via the mechanism of abortive division, can contribute to malignant cell repopulation during treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=radiation" title="radiation">radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=tumour%20repopulation" title=" tumour repopulation"> tumour repopulation</a>, <a href="https://publications.waset.org/abstracts/search?q=squamous%20cell%20carcinoma" title=" squamous cell carcinoma"> squamous cell carcinoma</a>, <a href="https://publications.waset.org/abstracts/search?q=stem%20cell" title=" stem cell"> stem cell</a> </p> <a href="https://publications.waset.org/abstracts/17943/in-silico-repopulation-model-of-various-tumour-cells-during-treatment-breaks-in-head-and-neck-cancer-radiotherapy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17943.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">267</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">4893</span> The Functionality of Ovarian Follicle on Steroid Hormone Secretion under Heat Stress</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Petnamnueng%20Dettipponpong">Petnamnueng Dettipponpong</a>, <a href="https://publications.waset.org/abstracts/search?q=Shuen%20E.%20Chen"> Shuen E. Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Heat stress is known to have negative effects on reproductive functions, such as follicular development and ovulation. This study aimed to investigate the specific effects of heat stress on steroid hormone secretion of ovarian follicle cells, particularly in relation to the expression of Apolipoprotein B (ApoB) and microsomal triglyceride transfer protein (MTP). The aim of the study was to understand the impact of heat stress on steroid hormone secretion in ovarian follicle cells and to explore the role of ApoB and MTP in this process. Primary granulosa and theca cells were collected from follicles and cultured under heat stress conditions (42 °C) for various time periods. Controls were maintained under normal conditions (37.5 °C ). The culture medium was collected at different time points to measure levels of progesterone and estradiol using ELISA kits. ApoB and MTP expression levels were analyzed using homemade antibodies and western blot. Data were assessed by a one-way ANOVA comparison test with Duncan’s new multiple-range test. Results were expressed as mean±S.E. Difference was considered significant at P<0.05. The results showed that heat stress significantly increased progesterone secretion in granulosa cells, with the peak observed after 13 hours of recovery under thermoneutral conditions. Estradiol secretion by theca cells was not affected. Heat stress also had a significant negative effect on granulosa cell viability. Additionally, the expression of ApoB and MTP was found to be differentially regulated by heat stress. ApoB expression in theca cells was transiently promoted, while ApoB expression in granulosa cells was consistently suppressed. MTP expression increased after 5 hours of recovery in both cell types. These findings suggest a mechanism by which chicken follicle cells export cellular lipids as very low-density lipoprotein (VLDL) in response to thermal stress. These contribute to our understanding of the role of ApoB and MTP steroidogenesis and lipid metabolism under heat stress conditions. The study involved the collection of primary granulosa and theca cells, culture under different temperature conditions, and analysis of the culture medium for hormone levels using ELISA kits. ApoB and MTP expression levels were assessed using homemade antibodies and western blot. This study aimed to address the effects of heat stress on steroid hormone secretion in ovarian follicle cells, as well as the role of ApoB and MTP in this process. The study demonstrates that heat stress stimulates steroidogenesis in granulosa cells, affecting progesterone secretion. ApoB and MTP expression were found to be differentially regulated by heat stress, indicating a potential mechanism for the export of cellular lipids in response to thermal stress. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heat%20stress" title="heat stress">heat stress</a>, <a href="https://publications.waset.org/abstracts/search?q=granulosa%20cells" title=" granulosa cells"> granulosa cells</a>, <a href="https://publications.waset.org/abstracts/search?q=theca%20cells" title=" theca cells"> theca cells</a>, <a href="https://publications.waset.org/abstracts/search?q=steroidogenesis" title=" steroidogenesis"> steroidogenesis</a>, <a href="https://publications.waset.org/abstracts/search?q=chicken" title=" chicken"> chicken</a>, <a href="https://publications.waset.org/abstracts/search?q=apolipoprotein%20B" title=" apolipoprotein B"> apolipoprotein B</a>, <a href="https://publications.waset.org/abstracts/search?q=microsomal%20triglyceride%20transfer%20protein" title=" microsomal triglyceride transfer protein"> microsomal triglyceride transfer protein</a> </p> <a href="https://publications.waset.org/abstracts/181241/the-functionality-of-ovarian-follicle-on-steroid-hormone-secretion-under-heat-stress" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/181241.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">75</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">4892</span> Sirt1 Activators Promote Skin Cell Regeneration and Cutaneous Wound Healing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hussain%20Mustatab%20Wahedi">Hussain Mustatab Wahedi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sun%20You%20Kim"> Sun You Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Skin acts as a barrier against the harmful environmental factors. Integrity and timely recovery of the skin from injuries and harmful effects of radiations is thus very important. This study aimed to investigate the importance of Sirt1 in the recovery of skin from UVB-induced damage and cutaneous wounds by using natural and synthetic novel Sirt1 activators. Juglone, known as a natural Pin1 inhibitor, and NED416 a novel synthetic Sirt1 activator were checked for their ability to regulate the expression and activity of Sirt1 and hence photo-damage and wound healing in cultured skin cells (NHDF and HaCaT cells) and mouse model by using Sirt1 siRNA knockdown, cell migration assay, GST-Pulldown assay, western blot analysis, tube formation assay, and immunohistochemistry. Interestingly, Sirt1 knockdown inhibited skin cell migration in vitro. Juglone up regulated the expression of Sirt1 in both the cell lines under normal and UVB irradiated conditions, enhanced Sirt1 activity and increased the cell viability by reducing reactive oxygen species synthesis and apoptosis. Juglone promoted wound healing by increasing cell migration and angiogenesis through Cdc42/Rac1/PAK, MAPKs and Smad pathways in skin cells. NED416 upregulated Sirt1 expression in HaCaT and NHDF cells as well as increased Sirt1 activity. NED416 promoted the process of wound healing in early as well as later stages by increasing macrophage recruitment, skin cell migration, and angiogenesis through Cdc42/Rac1 and MAPKs pathways. So, both these compounds activated Sirt1 and promoted the process of wound healing thus pointing towards the possible role of Sirt1 in skin regeneration and wound healing. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=skin%20regeneration" title="skin regeneration">skin regeneration</a>, <a href="https://publications.waset.org/abstracts/search?q=wound%20healing" title=" wound healing"> wound healing</a>, <a href="https://publications.waset.org/abstracts/search?q=Sirt1" title=" Sirt1"> Sirt1</a>, <a href="https://publications.waset.org/abstracts/search?q=UVB%20light" title=" UVB light"> UVB light</a> </p> <a href="https://publications.waset.org/abstracts/84195/sirt1-activators-promote-skin-cell-regeneration-and-cutaneous-wound-healing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/84195.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">188</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">4891</span> Novel Steviosides Analogs Induced Apoptosis in Breast Cancers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Malki">Ahmed Malki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Breast cancer has been identified as the most lethal form of cancer today. In our study, we designed and screened 16 steviosides derivatives for their cytotoxic activities in MCF-7human breast cancer cells and normal MCF-12a cells. Our data indicated that steviosides derivatives 9 and 15 decreased cell proliferation and induced apoptosis in MCF-7 breast cancer cells more thannormal breast cells epithelial cells. Flow cytometric analysis showed that both steviosides, derivatives 9 and 15 arrested the MCF-7 cells in G1 phase, which is further confirmed by the increased expression level of p21. Moreover, both steviosides derivatives increased caspase-9 activity, and the induction of apoptosis was significantly reduced after treating cells with caspase-9 inhibitor LEHD-CHO. Both steviosides derivatives increased Caspase 3 activities and induced Parp-1 cleavage in H1299 cells. Based on previous results, we have identified two novel steviosides derivatives which provoked apoptosis in breast cancer cells by arresting cells in G1 phase and increasing caspase-9 and caspase-3 activities which merits further development and investigations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=steviosides" title="steviosides">steviosides</a>, <a href="https://publications.waset.org/abstracts/search?q=breast%20cancer" title=" breast cancer"> breast cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=p53" title=" p53"> p53</a>, <a href="https://publications.waset.org/abstracts/search?q=cell%20cycle" title=" cell cycle"> cell cycle</a> </p> <a href="https://publications.waset.org/abstracts/149701/novel-steviosides-analogs-induced-apoptosis-in-breast-cancers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/149701.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">120</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">4890</span> Comparison of the Performance of GaInAsSb and GaSb Cells under Different Temperature Blackbody Radiations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Liangliang%20Tang">Liangliang Tang</a>, <a href="https://publications.waset.org/abstracts/search?q=Chang%20Xu"> Chang Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xingying%20Chen"> Xingying Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> GaInAsSb cells probably show better performance than GaSb cells in low-temperature thermophotovoltaic systems due to lower bandgap; however, few experiments proved this phenomenon so far. In this paper, numerical simulation is used to evaluate GaInAsSb and GaSb cells with similar structures under different radiation temperatures. We found that GaInAsSb cells with n-type emitters show slightly higher output power densities compared with that of GaSb cells with n-type emitters below 1,550 K-blackbody radiation, and the power density of the later cells will suppress the formers above this temperature point. During the temperature range of 1,000~2,000 K, the efficiencies of GaSb cells are about twice of GaInAsSb cells if perfect filters are used to prevent the emission of the non-absorbed long wavelength photons. Several parameters that affect the GaInAsSb cell were analyzed, such as doping profiles, thicknesses of GaInAsSb epitaxial layer and surface recombination velocity. The non-p junctions, i.e., n-type emitters are better for GaInAsSb cell fabrication, which is similar to that of GaSb cells. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thermophotovoltaic%20cell" title="thermophotovoltaic cell">thermophotovoltaic cell</a>, <a href="https://publications.waset.org/abstracts/search?q=GaSb" title=" GaSb"> GaSb</a>, <a href="https://publications.waset.org/abstracts/search?q=GaInAsSb" title=" GaInAsSb"> GaInAsSb</a>, <a href="https://publications.waset.org/abstracts/search?q=diffused%20emitters" title=" diffused emitters"> diffused emitters</a> </p> <a href="https://publications.waset.org/abstracts/50509/comparison-of-the-performance-of-gainassb-and-gasb-cells-under-different-temperature-blackbody-radiations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50509.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">280</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">4889</span> Dielectric Recovery Characteristics of High Voltage Gas Circuit Breakers Operating with CO₂ Mixture</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Peng%20Lu">Peng Lu</a>, <a href="https://publications.waset.org/abstracts/search?q=Branimir%20Radisavljevic"> Branimir Radisavljevic</a>, <a href="https://publications.waset.org/abstracts/search?q=Martin%20Seeger"> Martin Seeger</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Over"> Daniel Over</a>, <a href="https://publications.waset.org/abstracts/search?q=Torsten%20Votteler"> Torsten Votteler</a>, <a href="https://publications.waset.org/abstracts/search?q=Bernardo%20Galletti"> Bernardo Galletti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> CO₂-based gas mixtures exhibit huge potential as the interruption medium for replacing SF₆ in high voltage switchgears. In this paper, the recovery characteristics of dielectric strength of CO₂-O₂ mixture in the post arc phase after the current zero are presented. As representative examples, the dielectric recovery curves under conditions of different gas filling pressures and short-circuit current amplitudes are presented. A series of dielectric recovery measurements suggests that the dielectric recovery rate is proportional to the mass flux of the blowing gas, and the dielectric strength recovers faster in the case of lower short circuit currents. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CO%E2%82%82%20mixture" title="CO₂ mixture">CO₂ mixture</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20voltage%20circuit%20breakers" title=" high voltage circuit breakers"> high voltage circuit breakers</a>, <a href="https://publications.waset.org/abstracts/search?q=dielectric%20recovery%20rate" title=" dielectric recovery rate"> dielectric recovery rate</a>, <a href="https://publications.waset.org/abstracts/search?q=short-circuit%20current" title=" short-circuit current"> short-circuit current</a>, <a href="https://publications.waset.org/abstracts/search?q=mass%20flux" title=" mass flux"> mass flux</a> </p> <a href="https://publications.waset.org/abstracts/139491/dielectric-recovery-characteristics-of-high-voltage-gas-circuit-breakers-operating-with-co2-mixture" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/139491.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">194</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">4888</span> The Effect of Temperature, Contact Time and Agitation Speed During Pre-Treatment on Elution of Gold</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20P.%20Oladele">T. P. Oladele</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20A.%20Snyders"> C. A. Snyders</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20M.%20Bradshaw"> S. M. Bradshaw</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Akdogan"> G. Akdogan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of temperature, contact time and agitation during pre-treatment was investigated on the elution of gold from granular activated carbon at fixed caustic-cyanide concentration and elution conditions. It was shown that there are interactions between parameters during pre-treatment. At 80oC, recovery is independent of the contact time while the maximum recovery is obtained in the absence of agitation (0rpm). Increase in agitation speed from 0 rev/min to 1200 rev/min showed a decrease in recovery of approximately 20 percent at 80°C. Recovery with increased time from 15 minutes to 45 minutes is only pronounced at 25°C with approximately 4 percent increase at all agitation speeds. The results from elution recovery are aimed to give insight into the mechanisms of pre-treatment under the combinations of the chosen parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gold" title="gold">gold</a>, <a href="https://publications.waset.org/abstracts/search?q=temperature" title=" temperature"> temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=contact%20time" title=" contact time"> contact time</a>, <a href="https://publications.waset.org/abstracts/search?q=agitation%20speed" title=" agitation speed"> agitation speed</a>, <a href="https://publications.waset.org/abstracts/search?q=recovery" title=" recovery"> recovery</a> </p> <a href="https://publications.waset.org/abstracts/20502/the-effect-of-temperature-contact-time-and-agitation-speed-during-pre-treatment-on-elution-of-gold" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20502.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">490</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">4887</span> Studying the Anti-Cancer Effects of Thymoquinone on Tumor Cells Through Natural Killer Cells Activity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nouf%20A.%20Aldarmahi">Nouf A. Aldarmahi</a>, <a href="https://publications.waset.org/abstracts/search?q=Nesrin%20I.%20Tarbiah"> Nesrin I. Tarbiah</a>, <a href="https://publications.waset.org/abstracts/search?q=Nuha%20A.%20Alkhattabi"> Nuha A. Alkhattabi</a>, <a href="https://publications.waset.org/abstracts/search?q=Huda%20F.%20Alshaibi"> Huda F. Alshaibi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nigella sativa which is known as dark cumin is a well-known example for a widely applicable herbal medicine. Nigella sativa can be effective in a variety of diseases such as hypertension, diabetes, bronchitis, gastrointestinal upset, and cancer. The anticancer effect of Nigella sativa appeared to be mediated by immune-modulatory effect through stimulating human natural killer (NK) cells. This is a type of lymphocytes which is part of the innate immunity, also known as the first line of defense in the body against pathogens. This study investigated the effect of thymoquinone as a major component of Nigella sativa on the molecular cytotoxic pathway of NK cell and the role of thymoquinone therapeutic effect on NK cells. NK cells were cultured with breast tumor cells in different ways and cultured media was collected and the concentration of perforin, granzyme B and interferon-α were measured by ELISA. The cytotoxic effect of NK cells on breast tumor cells was enhanced in the presence of thymoquinone, with increased activity of perforin in NK cells. This improved anticancer effect of thymoquinone on breast cancer cells. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=breast%20cancer" title="breast cancer">breast cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=cancer%20cells" title=" cancer cells"> cancer cells</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20killer%20cells" title=" natural killer cells"> natural killer cells</a>, <a href="https://publications.waset.org/abstracts/search?q=thymoquinone" title=" thymoquinone"> thymoquinone</a> </p> <a href="https://publications.waset.org/abstracts/149104/studying-the-anti-cancer-effects-of-thymoquinone-on-tumor-cells-through-natural-killer-cells-activity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/149104.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">241</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">4886</span> Umbilical Cord-Derived Cells in Corneal Epithelial Regeneration</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hasan%20Mahmud%20Reza">Hasan Mahmud Reza</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Extensive studies of the human umbilical cord, both basic and translational, over the last three decades have unveiled a plethora of information. The cord lining harbors at least two phenotypically different multipotent stem cells: mesenchymal stem cells (MSCs) and cord lining epithelial stem cells (CLECs). These cells exhibit a mixed genetic profiling of both embryonic and adult stem cells, hence display a broader stem features than cells from other sources. We have observed that umbilical cord-derived cells are immunologically privileged and non-tumorigenic by animal study. These cells are ethically acceptable, thus provides a significant advantage over other stem cells. The high proliferative capacity, viability, differentiation potential, and superior harvest of these cells have made them better candidates in comparison to contemporary adult stem cells. Following 30 replication cycles, these cells have been observed to retain their stemness, with their phenotype and karyotype intact. Transplantation of bioengineered CLEC sheets in limbal stem cell-deficient rabbit eyes resulted in regeneration of clear cornea with phenotypic expression of the normal cornea-specific epithelial cytokeratin markers. The striking features of low immunogenicity protecting self along with co-transplanted allografts from rejection largely define the transplantation potential of umbilical cord-derived stem cells. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cord%20lining%20epithelial%20stem%20cells" title="cord lining epithelial stem cells">cord lining epithelial stem cells</a>, <a href="https://publications.waset.org/abstracts/search?q=mesenchymal%20stem%20cell" title=" mesenchymal stem cell"> mesenchymal stem cell</a>, <a href="https://publications.waset.org/abstracts/search?q=regenerative%20medicine" title=" regenerative medicine"> regenerative medicine</a>, <a href="https://publications.waset.org/abstracts/search?q=umbilical%20cord" title=" umbilical cord"> umbilical cord</a> </p> <a href="https://publications.waset.org/abstracts/117218/umbilical-cord-derived-cells-in-corneal-epithelial-regeneration" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/117218.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">156</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">4885</span> Energy and Economic Analysis of Heat Recovery from Boiler Exhaust Flue Gas</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kemal%20Comakli">Kemal Comakli</a>, <a href="https://publications.waset.org/abstracts/search?q=Meryem%20Terhan"> Meryem Terhan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the potential of heat recovery from waste flue gas was examined in 60 MW district heating system of a university, and fuel saving was aimed by using the recovered heat in the system as a source again. Various scenarios are intended to make use of waste heat. For this purpose, actual operation data of the system were taken. Besides, the heat recovery units that consist of heat exchangers such as flue gas condensers, economizers or air pre-heaters were designed theoretically for each scenario. Energy analysis of natural gas-fired boiler&rsquo;s exhaust flue gas in the system, and economic analysis of heat recovery units to predict payback periods were done. According to calculation results, the waste heat loss ratio from boiler flue gas in the system was obtained as average 16%. Thanks to the heat recovery units, thermal efficiency of the system can be increased, and fuel saving can be provided. At the same time, a huge amount of green gas emission can be decreased by installing the heat recovery units. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heat%20recovery%20from%20flue%20gas" title="heat recovery from flue gas">heat recovery from flue gas</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20analysis%20of%20flue%20gas" title=" energy analysis of flue gas"> energy analysis of flue gas</a>, <a href="https://publications.waset.org/abstracts/search?q=economical%20analysis" title=" economical analysis"> economical analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=payback%20period" title=" payback period"> payback period</a> </p> <a href="https://publications.waset.org/abstracts/45052/energy-and-economic-analysis-of-heat-recovery-from-boiler-exhaust-flue-gas" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45052.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">288</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">4884</span> Determination of Inactivation and Recovery of Saccharomyces cerevisiae Cells after the Gas-Phase Plasma Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Z.%20Herceg">Z. Herceg</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Stulic"> V. Stulic</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Vukusic"> T. Vukusic</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Rezek%20Jambrak"> A. Rezek Jambrak</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Gas phase plasma treatment is a new nonthermal technology used for food and water decontamination. In this study, we have investigated influence of the gas phase plasma treatment on yeast cells of S. cerevisiae. Sample was composed of 10 mL of yeast suspension and 190 mL of 0.01 M NaNO₃ with a medium conductivity of 100 µS/cm. Samples were treated in a glass reactor with a point- to-plate electrode configuration (high voltage electrode-titanium wire in the gas phase and grounded electrode in the liquid phase). Air or argon were injected into the headspace of the reactor at the gas flow of 5 L/min. Frequency of 60, 90 and 120 Hz, time of 5 and 10 min and positive polarity were defined parameters. Inactivation was higher with the applied higher frequency, longer treatment time and injected argon. Inactivation was not complete which resulted in complete recovery. Cellular leakage (260 nm and 280 nm) was higher with a longer treatment time and higher frequency. Leakage at 280 nm which defines a leakage of proteins was higher than leakage at 260 nm which defines a leakage of nucleic acids. The authors would like to acknowledge the support by Croatian Science Foundation and research project 'Application of electrical discharge plasma for preservation of liquid foods'. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Saccharomyces%20cerevisiae" title="Saccharomyces cerevisiae">Saccharomyces cerevisiae</a>, <a href="https://publications.waset.org/abstracts/search?q=inactivation" title=" inactivation"> inactivation</a>, <a href="https://publications.waset.org/abstracts/search?q=gas-phase%20plasma%20treatment" title=" gas-phase plasma treatment"> gas-phase plasma treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=cellular%20leakage" title=" cellular leakage"> cellular leakage</a> </p> <a href="https://publications.waset.org/abstracts/90155/determination-of-inactivation-and-recovery-of-saccharomyces-cerevisiae-cells-after-the-gas-phase-plasma-treatment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90155.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">202</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">4883</span> Inactivation and Stress Response of Salmonella enterica Serotype Typhimurium lt21 upon Cold Gas-Phase Plasma Treatment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zoran%20Herceg">Zoran Herceg</a>, <a href="https://publications.waset.org/abstracts/search?q=Tomislava%20Vuku%C5%A1i%C4%87"> Tomislava Vukušić</a>, <a href="https://publications.waset.org/abstracts/search?q=Anet%20Re%C5%BEek%20Jambrak"> Anet Režek Jambrak</a>, <a href="https://publications.waset.org/abstracts/search?q=Vi%C5%A1nja%20Stuli%C4%87"> Višnja Stulić</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Today one of the greatest challenges are directed to the safety of food supply. If food pathogens are ingested they can cause human illnesses. Because of that new technologies that are effective in microbial reduction are developing to be used in food industries. One of such technology is cold gas phase plasma. Salmonella enterica was studied as one of the pathogenes that can be found in food. The aim of this work was to examine the inactivation rate and stress response of plasma treated cells of Salmonella enterica inoculated in apple juice. After the treatment cellular leakage, phenotypic changes in plasma treated cells-biofilm formation and degree of recovery were conducted. Sample volume was inoculated with 5 mL of pure culture of Salmonella enterica and 15 mL of apple juice. Statgraphics Centurion software (StatPoint Technologies, Inc., VA, USA) was used for experimental design and statistical analyses. Treatment time (1, 3, 5 min) and gas flow (40, 60, 80 L/min) were changed. Complete inactivation and 0 % of recovery after the 48 h was observed at these experimental treatments: 3 min; 40 L/min, 3 min; 80 L/min, 5 min; 40 L/min. Biofilm reduction was observed at all treated samples. Also, there was an increase in cellular leakage with a longer plasma treatment. Although there were a significant reduction and 0 % of recovery after the plasma treatments further investigation of the method is needed to clarify whether there are sensorial, physical and chemical changes in juices after the plasma treatment. Acknowledgments: The authors would like to acknowledge the support by Croatian Science Foundation and research project 'Application of electrical discharge plasma for the preservation of liquid foods'. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=salmonella%20enterica%20serotype%20typhimurium%20lt21" title="salmonella enterica serotype typhimurium lt21">salmonella enterica serotype typhimurium lt21</a>, <a href="https://publications.waset.org/abstracts/search?q=gas-phase%20plasma%20treatment" title=" gas-phase plasma treatment"> gas-phase plasma treatment</a>, <a href="https://publications.waset.org/abstracts/search?q=inactivation" title=" inactivation"> inactivation</a>, <a href="https://publications.waset.org/abstracts/search?q=stress%20response" title=" stress response"> stress response</a> </p> <a 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