检索结果-南通市图书馆

Chinese Chemical Letters 2012年第6期23卷 681-684页

作者： Parasuraman Karthikeyan Pundlik Rambhau bhagat S.Senthil Kumar Organic Chemistry Division School of Advanced SciencesVIT UniversityVellore 632 014India

A variety of alkyl-arenes and cyclohexane were converted to the corresponding ketones with NaC10 as the oxidant in the presence of 1-glycyl-3-methyl imidazolium chloride--copper（II） complex. This method contains simplified product isolation and catalyst recycling, affording benzylic C-H oxidation of alkyl-arenes imparting high yield of ketones. Furthermore, complex could be reused seven times without a significant loss of its catalytic activity.

关键词： Copper Alkane Ionic liquid Room temperature

维普期刊数据库

Web Resources for Metagenomics Studies

在线全文

学校读者我要写书评

暂无评论

Genomics, Proteomics & Bioinformatics 2015年第5期13卷 296-303页

作者： Pravin Dudhagara Sunil Bhavsar Chintan bhagat Anjana Ghelani Shreyas Bhatt Rajesh Patel Department of Biosciences Veer Narmad South Gujarat University Department of Microbiology Shree Ramkrishna Institute of Computer Education and Applied Sciences Department of Life Sciences Hemchandracharya North Gujarat University

The development of next-generation sequencing （NGS） platforms spawned an enormous volume of data. This explosion in data has unearthed new scalability challenges for existing bioinformatics tools. The analysis of metagenomic sequences using bioinformatics pipelines is complicated by the substantial complexity of these data. In this article, we review several commonly-used online tools for metagenomies data analysis with respect to their quality and detail of analysis using simulated metagenolnies data. There are at least a dozen such software tools presently available in the public domain. Among them, MGRAST, IMG/M, and METAVIR are the most well-known tools according to the number of citations by peer-reviewed scientific media up to mid-2015. Here, we describe 12 online tools with respect to their web link, annotation pipelines, clustering methods, online user support, and availability of data storage. We have also done the rating for each tool to screen more potential and preferential tools and evaluated five best tools using synthetie metagenome. The article comprehensively deals with the contemporary problems and the prospects of metagenomies from a bioinformatics viewpoint.

关键词： Mctagenomics Metagcnomes Web resources Software tools Synthetic metagenome

维普期刊数据库

Hybrid Whale Optimization Algorithm for Resource Optimization in Cloud E-Healthcare Applications

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第6期71卷 5659-5676页

作者： Punit Gupta Sanjit bhagat Dinesh Kumar Saini Ashish Kumar Mohammad Alahmadi Prakash Chandra Sharma School of Computing&Information Technology Manipal University JaipurJaipur303007India School of Basic Sciences Manipal University JaipurJaipur303007India Department of Software Engineering College of Computer Science and EngineeringUniversity of JeddahJeddah23218Saudi Arabia

In the next generation of computing environment e-health care services depend on cloud *** Cloud computing environment provides a real-time computing environment for e-health care *** these services generate a huge number of computational tasks,real-time computing and comes with a deadline,so conventional cloud optimizationmodels cannot fulfil the task in the least time and within the *** overcome this issue many resource optimization meta-heuristic models are been proposed but these models cannot find a global best solution to complete the task in the least time and manage utilization with the least simulation *** order to overcome existing issues,an artificial neural-inspired whale optimization is proposed to provide a reliable solution for healthcare *** this work,two models are proposed one for reliability estimation and the other is based on whale optimization technique and neural network-based binary *** predictive model enhances the quality of service using performance metrics,makespan,least average task completion time,resource usages cost and utilization of the *** as compared to existing algorithms the proposedANN-WHOalgorithms prove to improve the average start time by 29.3%,average finish time by 29.5%and utilization by 11%.

关键词： Cloud computing whale optimization health care resource optimization

Ferromagnetic Antiresonance and Giant Microwave Magneto-Impedance in Polycrystalline La0.49Sr0.51MnO3

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2008年第3期25卷 1124-1127页

作者：柳文军舒启清 S. M. bhagat I. O. TROYANCHUK College of Materials Science and Engineering Shenzhen University Shenzhen 518060 Shenzhen Key Laboratory of Special Functional Materials Shenzhen 518060 Department of Physics University of Maryland College Park Maryland 20742-4111 USA Institute of Solid State and Semiconductor Physics National Academy of Sciences of Belarus P. Brovki Street 17 Minsk 220072 Belarus

The ferromagnetic antiresonance （FMAR） phenomenon, i.e., the minimum of the microwave absorption, in polycrystalline La0.49Sr0.51MnO3 is observed near Curie temperature TC = 282 K. Temperature-dependences of magnetization μ0M are obtained from the FMAR. The results show that as μ0H = 0, by fitting the scaling law M ∝ （TC -T）^β to temperature-dependences of μ0M at the different microwave frequencies, it yields TC=281.2 K and β = 0.47. However, temperature-dependences of μ0M under different μ0H are not in agreement with the scaling law. Due to FMAR, about 40% giant microwave magneto-impedance at 11.9 GHz can occur under a low field μ0H = 0.03 T.

关键词： MAGNETORESISTANCE MANGANITES LA0.7SR0.3MNO3

Polymorphism of -765G > C COX-2 is a risk factor for gastric adenocarcinoma and peptic ulcer disease in addition to H pylori infection:A study from northern India

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2008年第10期14卷 1498-1503页

作者： Ashish Saxena Kashi Nath Prasad Uday Chand Ghoshal Monty Roshan bhagat Narendra Krishnani Nuzhat Husain Department of Microbiology Sanjay Gandhi Postgraduate Institute of Medical Sciences Lucknow 226014 India Department of Gastroenterology Sanjay Gandhi Postgraduate Institute of Medical Sciences Lucknow 226014 India Department of Gastroenterology CentralCommand Hospital Lucknow 226002 India Department of Pathology Sanjay GandhiPostgraduate Institute of Medical Sciences Lucknow 226014India Department of Pathology Chhatrapati Shahu Ji Maharaj Medical University Lucknow 226001 India

AIM: To investigate -765G > C COX-2 polymorphism and H pylori infection in patients with gastric adenocarcinoma, peptic ulcer disease (PUD) and non- ulcer dyspepsia (NUD). METHODS: We enrolled 348 adult patients (62 gastric adenocarcinoma, 45 PUD and 241 NUD) undergoing upper gastrointestinal endoscopy at two referral centers between September, 2002 and May, 2007. H pylori infection was diagnosed when any of the four tests (RUT, culture, histopathology and PCR) were positive. Genotyping for -765G > C polymorphism of COX-2 was performed by PCR-RFLP analysis. RESULTS: Frequency of C carrier had significantassociation with gastric adenocarcinoma as compared to NUD [77.4% vs 29%, P C COX-2 polymorphism with or without H pylori could be a marker for genetic susceptibility to gastric adenocarcinoma. COX-2 polymorphism in presence of H pylori infection might be useful in predicting the risk of PUD.

关键词： COX-2 polymorphism Gastric adenocarcinoma Peptic ulcer disease Helicobacter pylori infection

Quantitative image analysis of celiac disease

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2015年第9期21卷 2577-2581页

作者： Edward J Ciaccio Govind bhagat Suzanne K Lewis Peter H Green Department of Medicine Celiac Disease CenterColumbia UniversityNew YorkNY 10032United States

We outline the use of quantitative techniques that are currently used for analysis of celiac *** processing techniques can be useful to statistically analyze the pixular data of endoscopic images that is acquired with standard or videocapsule *** is shown how current techniques have evolved to become more useful for gastroenterologists who seek to understand celiac disease and to screen for it in suspected *** directions for focus in the development of methodology for diagnosis and treatment of this disease are *** is evident that there are yet broad areas where there is potential to expand the use of quantitative techniques for improved analysis in suspected or known celiac disease patients.

关键词： Celiac disease Frequency analysis Motility Videoca

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

城市轨道交通杂散电流治理的综述与评估

电工技术学报 2021年第23期36卷 4851-4863页

作者： Sahil bhagat 杨晓峰王淼 Andrea Mariscotti 日立轨道信号与运输方案股份有限公司-阿布扎比阿布扎比410962 北京交通大学电气工程学院北京100044 热那亚大学海军、电气、电子和电信工程系热那亚16145

杂散电流会造成电气化交通系统附近金属结构腐蚀,该现象在普遍采用直流牵引供电的城市轨道交通中尤为突出。该文分别对城市轨道交通新建线路和运营阶段的现有线路的杂散电流治理和防护措施进行讨论。对设计阶段的新建线路而言,可采用包... 详细信息

杂散电流会造成电气化交通系统附近金属结构腐蚀,该现象在普遍采用直流牵引供电的城市轨道交通中尤为突出。该文分别对城市轨道交通新建线路和运营阶段的现有线路的杂散电流治理和防护措施进行讨论。对设计阶段的新建线路而言,可采用包括优化牵引变电所位置、减小轨道纵向电阻、在道床中安装杂散电流收集系统等措施。对处于运营阶段的现有线路而言,除了采取在走行轨上并联线缆或走行轨间焊接均流线等以增大回流路径截面积措施外,通过电力电子的静止变换器(如负阻变换器等)控制回流路径杂散电流的方法也是极具潜力的治理措施;上述单元可以部署在特定点,以实现对轨道电位过高或出现初期腐蚀位置处的定点治理。

关键词：城市轨道交通杂散电流腐蚀杂散电流收集杂散电流缓解负阻变换器

维普期刊数据库

Retinal toxicity with Ritonavir

在线全文

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2016年第4期9卷 640-642页

作者： Yufei Tu Ronald J Poblete Benjamin D Freilich Marco A Zarbin Neelakshi bhagat Institute of Ophthalmology and Visual Science New Jersey Medical School Rutgers University

Dear sir,Non-systemic,ocular toxicity caused by medications used in highly active antiretroviral therapy（HAART）for human immunodeficiency virus（HIV）infection is an uncommon adverse event[1].Roe et al[2]reported Ri... 详细信息

关键词： toxicity antiretroviral uncommon ocular pigment fluorescein presentation macular fundus noted

Doping-Induced Phase Transitions in Polycrystalline La0.49Sr0.51（Mn1-xNbx）O3

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2005年第4期22卷 938-941页

作者：柳文军舒启清马晓翠 S.M.bhagat S.E.Lofland I.O.Troyanchuk DepartmentofMaterialScienceandEngineering SchoolofScienceShenzhenUniversityShenzhen518060//ShenzhenKeyLaboratoryofSpecialFunctionalMaterialsShenzhenUniversityShenzhen518060 DepartmentofPhysics UniversityofMarylandCollegeParkMaryland20742-4111USA InstituteofSolidStatePhysics NationalAcademyofSciencesofBelarusP.BrovkiStreet17Minsk220072Belarus

Observations of temperature dependences of ac susceptibility χac, resistivity (ρ) and dc magnetization M for polycrystalline La0.49Sr0.51(Mn1−xNbx)O3 (x = 0, 0.05, 0.15, and 0.25) show that due to substitution of Mn4+ by diamagnetic Nb5+, there appear to be (i) the decrease of χac as T>TN, (ii) the occurrence of a maximum (insulator-metal-like transition) for ρ near TC, (iii) the decline of M as x>0.05, and (iv) the lowering of TC. The results might be ascribed to: (i) the rearrangement of Mn3+ and Mn4+ ions, (ii) the decrease of the number of Mn3+ and Mn4+ pairs involved in double exchange interaction, (iii) the delocalization of the electrons and holes, (iv) the reduction of the randomness of the delocalized carrier scattering by thermal spin fluctuation due to magnetic ordering, and (v) the compensation effect of Nb5+ ions for Sr2+ ions.

关键词：人工掺杂相位变换 La0.49Sr0.51 聚晶体磁化系数

Assessing the auditory effects of oral chelation therapy drug Deferasirox in individuals with β-thalassemia major

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

世界耳鼻咽喉头颈外科杂志英文版 2024年第4期10卷 309-314页

作者： Tiwana Balwinder S. Aggarwal Ankita bhagat Sanjeev Singh Harjinder Sahni Dimple Yadav Vishav Department of Otorhinolaryngology and Head & Neck Surgery Government Medical College Patiala Punjab India Department of Paediatrics Government Medical College Patiala Punjab India

Objective: Our study aimed to investigate the ototoxicity associated with the iron chelator deferasirox in patients with β-thalassemia major, who were receiving regular transfusion therapy, along with evaluating the data on audiological tests using appropriate statistical ***: A cross-sectional observational study was conducted on 100 transfusion-dependent β-thalassemia major patients on oral iron chelating agent-deferasirox. Pure tone audiometry (PTA) and distortion product otoacoustic emissions (DPOAE) was carried out in all patients to assess the auditory side effects of the drug. Data was collected, compiled, and analyzed statistically using appropriate statistical tests. The relationship between ototoxicity and various demographic parameters such as age, sex, hemoglobin (Hb) level, S. ferritin, duration, and dose of chelation therapy was also ***: Sixteen patients had abnormal DPOAE and the number of patients with pure tone average above 25 dB HL which was taken as hearing deficit on PTA was 13. No statistically significant relationship between hearing loss and age, gender, S. ferritin, duration of therapy, cumulative dose, Hb levels were ***: Despite being a lifesaving drug, the advantages of chelating agent-Deferasirox must be weighed against its probable ototoxic effects. We could not find a relationship of ototoxicity with variable parameters (age, gender, Hb level, Ferritin level, duration, and cumulative dose of drug), thus future research is encouraged to form a definitive basis.

关键词： auditory deferasirox distortion product otoacoustic emissions oral chelating agent pure tone audiometry thalassemia