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Radio-frequency magnetron sputtered thin-film La_(0.5)Sr_(0.5)Co_(0.95)Nb_(0.05)O_(3-δ) perovskite electrodes for intermediate temperature symmetric solid oxide fuel cell(IT-SSOFC)

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Materials Reports(Energy) 2022年第2期2卷 75-85页

作者： vicky dhongde Aditya Singh Jyotsana Kal Uzma Anjum M.Ali Haider Suddhasatwa Basu Chemical Engineering Department Indian Institute of Technology DelhiHauz KhasNew Delhi110016India Department of Physics Indian Institute of Technology DelhiHauz KhasNew Delhi110016India National University of Singapore 21 Lower Kent Ridge Rd119077Singapore

The present work explores the application of La_(0.5)Sr_(0.5)Co_(0.95)Nb_(0.05)O_(3-δ)(LSCNO)perovskite as electrode material for the symmetric solid oxide fuel *** solid oxide fuel cells of thin-film LSCNO electrodes were prepared to study the oxygen reduction reaction at intermediate *** Rietveld refinement of syn-thesized material shows a hexagonal structure with the R-3c space group of the prepared perovskite *** parameter and fractional coordinates were utilized to calculate the oxygen ion diffusion coefficient for molecular dynamic *** 973 K,the oxygen ion diffusion of LSCNO was 1.407×10^(-8)cm^(2)s^(-1) higher by order of one magnitude than that of the La_(0.5)Sr_(0.5)Co_(0.95)Nb_(0.05)O_(3-δ)(7.751×10^(-9)cm^(2)^(-1)).The results suggest that the Nb doping provide the structural stability which improves oxygen anion *** enhanced structural stability was analysed by the thermal expansion coefficient calculated experimentally and from molecular dynamics ***,the density functional theory calculation revealed the role of Nb dopant for oxygen vacancy formation energy at Sr-0 and La-O planes is lower than the undoped *** understand the rate-limiting process for sluggish oxygen diffusion kinetics,80 nm and 40 nm thin films were fabricated using radio frequency magnetron sputtering on gadolinium doped ceria electrolyte *** impedance was observed to increase with an increasing thickness,suggesting the bulk diffusion as a rate-limiting step for oxygen ion *** electrochemical performance was analysed for the thin-flm symmetric solid oxide fuel cell,which achieved a peak power density of 390 mW cm^(-2) at 1.02 V in the presence of H_(2) fuel on the anode side and air on the cathode side.

关键词： Symmetric solid oxide fuel cell Thin-film electrode Diffusion coefficient Molecular dynamics Radio-frequency magnetron sputtering Intermediate temperature

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Dr. Mitchell Posner: hard work is the key to success

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Hepatobiliary Surgery and Nutrition 2019年第2期8卷 194-195页

作者： vicky Li

Expert's introduction Mitchell Posner, MD, currently serves as the Thomas D. Jones Professor of Surgery, Chief of Section of General Surgery and Surgical Oncology, and Physician-in-Chief of the University of Chicago M... 详细信息

关键词： Surgery Cancer Surgical

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Prof. Toshimi Kaido: explore the possibilities in liver transplantation

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Hepatobiliary Surgery and Nutrition 2019年第1期8卷 80-81页

作者： vicky Li

Expert's introduction Toshimi Kaido(Figure 1),MD,currently serves as the associate professor in Kyoto University in *** is the head of division of Hepato-Biliary-Pancreatic and Transplant Surgery.

关键词： Figure professor associate

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Prospect Theory Based Individual Irrationality Modelling and Behavior Inducement in Pandemic Control

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Computer Modeling in Engineering & Sciences 2024年第7期140卷 139-170页

作者： Wenxiang Dong H.vicky Zhao Department of Automation BNRistTsinghua UniversityBeijing100084China

Understanding and modeling individuals’behaviors during epidemics is crucial for effective epidemic ***,existing research ignores the impact of users’irrationality on decision-making in the ***,existing disease control methods often assume users’full compliance with measures like mandatory isolation,which does not align with the actual *** address these issues,this paper proposes a prospect theorybased framework to model users’decision-making process in epidemics and analyzes how irrationality affects individuals’behaviors and epidemic *** to the analysis results,irrationality tends to prompt conservative behaviors when the infection risk is low but encourages risk-seeking behaviors when the risk is ***,this paper proposes a behavior inducement algorithm to guide individuals’behaviors and control the spread of *** and real user tests validate our analysis,and simulation results show that the proposed behavior inducement algorithm can effectively guide individuals’behavior.

关键词： Disease spread behavior model irrationality prospect theory

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Recent emergence and outbreak of rotavirus gastroenteritis in Samoa:A scoping review of risk factors,containment measures and public health preparedness

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Asian Pacific Journal of Tropical Medicine 2021年第11期14卷 479-485页

作者： Lawal Olatunde Olayemi vicky Yemoh Alec Ekeroma School of Medicine Faculty of Health Sciences National University of Samoa

Diarrheal diseases have been known to cause death in many children below the age of five years,and rotavirus infection represents a major health problem in the world today,particularly in developing *** recent outbreak of rotavirus gastroenteritis in Samoa led to the introduction of her debut national immunization program on rotavirus vaccination for *** the introduction of anti-viral and anti-emetic drugs as of the containment approaches towards the virus,risk factors,preventive measures and public health preparedness against rotavirus infection are poorly understood in *** review aims to use available evidence on rotavirus literature to elucidate and map preventive strategies for the recently emerged rotavirus infections in *** conducted a search strategy using online medical literature databases and retrieval systems.A designated set of keywords such as rotavirus,gastroenteritis,outbreak,risk factors,containment measures,vaccination and Samoa were inserted in electronic databases to retrieve *** databases included Pub Med,Google Scholar,MEDLINE,Scinapse,and EBSCO *** from this review addressed the impact of rotavirus infection,associated threats and other preventive *** useful health frameworks in pursuing possible methods such as improved water quality,exclusive breast feeding,improved laboratory diagnostics and outbreak surveillance,may be essential in addressing alternate approaches towards containment of the disease in Samoa and other Pacific Island Countries and Territories.

关键词： Rotavirus Gastroenteritis Outbreak Risk factors Containment measures Vaccination Pacific Island Countries and Territories Samoa

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Persistent Precarity and the Disaster of Everyday Life: Homeless People’s Experiences of Natural and Other Hazards

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International Journal of Disaster Risk Science 2019年第3期10卷 332-342页

作者： JC Gaillard vicky Walters Megan Rickerby Yu Shi School of Environment The University of AucklandAuckland 1142New Zealand School of People Environment and PlanningMasseyUniversityAlbany 0632New Zealand Unit for Environmental Sciences and Management North-West UniversityPotchefstroom 2520South Africa

Knowledge of how homeless people deal with natural hazards and disasters is sparse and there is a remarkable absence of homeless people in policies and practices for disaster risk reduction(DRR). This article aims at filling this gap by exploring the lives of homeless people in two New Zealand cities that are exposed to natural hazards. It shows that natural hazards are of marginal concern to homeless people in comparison to the everyday hazards that they experience and that make their everyday life a disaster in itself. The disaster of everyday life is created and compounded by homeless people’s precarious lifeworlds. The article, nonetheless, shows that homeless people’s vulnerability to natural hazards remains high as they lack power to control the processes that shape their everyday lives, to prepare for large-scale events, and to be represented in DRR policy. Therefore, the article ultimately argues that disaster policies require greater attention to be paid to the power structures that create persistent precarity and the ways in which this is experienced in everyday life.

关键词： Everyday life Hazard Homelessness New Zealand Precarity Vulnerability

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Simply Fine-Tuned Deep Learning-Based Classification for Breast Cancer with Mammograms

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Computers, Materials & Continua 2022年第12期73卷 4677-4693页

作者： vicky Mudeng Jin-woo Jeong Se-woon Choe Department of Medical IT Convergence Engineering Kumoh National Institute of TechnologyGumi39253Korea Department of Electrical Engineering Institut Teknologi KalimantanBalikpapan76127Indonesia Department of Data Science Seoul National University of Science and TechnologySeoul01811Korea Department of IT Convergence Engineering Kumoh National Institute of TechnologyGumi39253Korea

A lump growing in the breast may be referred to as a breast mass related to the ***,not all tumors are cancerous or *** masses can cause discomfort and pain,depending on the size and texture of the *** an appropriate diagnosis,non-cancerous breast masses can be diagnosed earlier to prevent their cultivation from being *** the development of the artificial neural network,the deep discriminative model,such as a convolutional neural network,may evaluate the breast lesion to distinguish benign and malignant cancers frommammogram breast masses *** work accomplished breastmasses classification relative to benign and malignant cancers using a digital database for screening mammography image datasets.A residual neural network 50(ResNet50)model along with an adaptive gradient algorithm,adaptive moment estimation,and stochastic gradient descent optimizers,as well as data augmentations and fine-tuning methods,were *** addition,a learning rate scheduler and 5-fold cross-validation were applied with 60 training procedures to determine the best *** results of training accuracy,p-value,test accuracy,area under the curve,sensitivity,precision,F1-score,specificity,and kappa for adaptive gradient algorithm 25%,75%,100%,and stochastic gradient descent 100%fine-tunings indicate that the classifier is feasible for categorizing breast cancer into benign and malignant from the mammographic breast masses images.

关键词： Medical image analysis convolutional neural network mammogram breast masses breast cancer

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Achieving Positive Mental Health and Wellbeing on the COVID-19 Frontline

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The Innovation 2020年第2期1卷 3-4页

作者： vicky Poh Hoay Khoo Julie Morsillo Lei Zhang China-Australia Joint Research Centre for Infectious Diseases School of Public HealthXi'an Jiaotong University Health Science CentreXi'anShaanxiChina School of Arts and Social Sciences Eastern College AustraliaMelbourneAustralia Melbourne Sexual Health Centre Alfred HealthMelbourneAustralia Central Clinical School Faculty of MedicineMonash UniversityMelbourneAustralia Department of Epidemiology and Biostatistics College of Public HealthZhengzhou UniversityZhengzhouHenanChina

Sweeping across the continents,the unprecedented Coronavirus crisis has transformed the images of health professionals in the world's *** in personal protective equipment(PPE),faces barely recognized,these are the warriors who fight on the frontline for the health of the global community,and we,as part of the global community,in turn want to ensure that they too are well,both physically and mentally.

关键词： protective transformed Health

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Improved reversed phase liquid chromatographic method with pulsed electrochemical detection for tobramycin in bulk and pharmaceutical formulation

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Journal of Pharmaceutical Analysis 2013年第3期3卷 161-167页

作者： vicky Manyanga Ehab Elkady Jos Hoogmartens Erwin Adams Laboratory for Pharmaceutical Analysis Faculteit Farmaceutische Wetenschappen KU LeuvenO&N2 PB 923 Herestraat 49 B-3000 Leuven Belgium Pharmaceutical Chemistry Department Faculty of Pharmacy Cairo University Kasr El-Aini St.Cairo 11562 Egypt

Tobramycin is one of the aminoglycoside antibiotics that lack a UV absorbing chromophore. However, the application of pulsed electrochemical detection （PED） has been used successfully for the analysis of this and similar antibiotics. This work describes an improved liquid chromatographic （LC） method combined with PED, which is able to separate much more impurities than before. Using a Discovery C-18 RP column （250 mm × 4.6 mm i.d., 5 μm）, isocratic elution was carried out with a mobile phase, containing sodium sulfate （35 g/L）, sodium octanesulphonic acid （1 g/L）, tetrahydrofuran （14mL/L） and 0.2 M phosphate buffer pH 3.0 （50 mL/L）. Using these experimental conditions, the limit of quantification （LOQ, S/N= 10） was 5 ng. The linearity was examined in the range LOQ-60 μg/mL and the coefficient of determination was 0.998. The method also proved to be repeatable and the recovery was close to 100%. The influence of the different chromatographic parameters on the separation was investigated by means of an experimental design. The proposed method is useful in quality control of tobramycin drug substances and drug products.

关键词： Liquidchromatography-Pulsed electrochemicaldetection Tobramycin Aminoglycosideantibiotics

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Imaging assessment after SBRT for hepatocellular carcinoma

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Hepatoma Research 2020年第7期6卷 78-85页

作者： Connie Yip Tiffany Priyanthi Hennedige Gary JRCook vicky Goh Radiation Oncology National Cancer Centre SingaporeSingapore 169610Singapore Oncologic Imaging National Cancer Centre SingaporeSingapore 169610Singapore Cancer Imaging King’s College LondonLondon WC2R 2LSUnited Kingdom

The use of stereotactic body radiotherapy(SBRT)in hepatocellular carcinoma(HCC)has increased over the past few ***,accurate evaluation of post-SBRT treatment response is essential to avoid over-treatment of responders as well as missing the opportunity to salvage *** are some intricate imaging differences after liver SBRT compared to those observed after conventional fractionated radiotherapy and other locoregional *** aim to review the imaging changes that occur following SBRT for HCC and their potential clinical implications.

关键词： Imaging liver stereotactic body radiotherapy hepatocellular carcinoma

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