检索结果-南通市图书馆

Dietary intake in patients with chronic pancreatitis:A systematic review and meta-analysis

World Journal of Gastroenterology 2021年第34期27卷 5775-5792页

作者： Qurat Ul Ain yasir Bashir Linda Kelleher David m Bourne Suzanne m Egan Jean mcmahon Laura Keaskin Oonagh m Griffin Kevin C Conlon Sinead N Duggan Professorial Surgical Unit Department of SurgeryTrinity College DublinDublin 24 D24 NR0AIreland Department of Nutrition and Dietetics Tallaght University HospitalDublin 24 D24 NR0AIreland Department of Newcastle Nutrition Freeman HospitalNewcastle Upon Tyne NE77DNUnited Kingdom Library and Information Services Tallaght Tallaght University HospitalDublin 24 D24 NR0AIreland Department of Nutrition and Dietetics St.Vincent’s University HospitalDublin 4 D04 T6F4Ireland

BACKGROUND A progressive reduction in the secretion of pancreatic enzymes in patients with chronic pancreatitis(CP)results in malabsorption and ultimate ***,the pathogenesis of malnutrition is multifactorial and other factors such as chronic inflammation,alcohol excess and poor dietary intake all *** may restrict their dietary intake due to poor appetite or to avoid gastrointestinal symptoms and abdominal *** up to half of patients with chronic pancreatitis are reportedly malnourished,the dietary intake of patients with CP is relatively understudied and has not been systematically reviewed to *** To perform a systematic review and meta-analysis of the dietary intakes of patients with CP compared to healthy controls,and to compare the dietary intake of patients with alcohol-related CP and non-alcohol-related *** A systematic literature search was performed using EmBASE,mEDLINE,and Cochrane review on studies published between 1946 and August 30th,*** subjects with a diagnosis of CP who had undergone dietary assessment were included in the systematic review(qualitative analysis).Studies on patients with other pancreatic diseases or who had undergone pancreatic surgery were not *** comparing the dietary intake of patients with CP to that of healthy controls were included in the meta-analysis(quantitative analysis).metaanalysis was performed using Review manager *** Ottawa Scale(NOS)was used to assess quality of *** Of 6715 studies retrieved in the search,23 were eligible for qualitative analysis while 12 were eligible for quantitative *** the meta-analysis,the total energy(calorie)intake of patients with CP was similar to that of healthy controls[mean difference(mD):171.3;95%confidence interval(CI):-226.01,568.5;P=0.4],however patients with CP consumed significantly fewer non-alcohol calories than controls[mD:-694.1;95%CI:-1256.1,(-132.1);P=0.02].CP patients consumed m

关键词： Systematic review meta-analysis Chronic pancreatitis Dietary intake Undernutrition Alcohol-related chronic pancreatitis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

四叶草形超宽带漫散射编码超表面

引用

雷达学报（中英文） 2021年第3期10卷 382-390页

作者： yasir Saifullah 杨国敏徐丰复旦大学电磁波信息科学教育部重点实验室上海200433

该文提出了一种结构新颖的四叶草形编码超表面,并利用该超表面实现了超宽带漫散射。所提出的编码超表面具有旋转对称性,它对x极化和y极化波产生相似的反射特性。为了实现1比特编码超表面,该文设计了在15.5~40.5 GHz的频率范围内且相位差... 详细信息

该文提出了一种结构新颖的四叶草形编码超表面,并利用该超表面实现了超宽带漫散射。所提出的编码超表面具有旋转对称性,它对x极化和y极化波产生相似的反射特性。为了实现1比特编码超表面,该文设计了在15.5~40.5 GHz的频率范围内且相位差为180°±37°的两个超表面单元。采用优化算法得到阵列中单元的最佳排列,从而实现了宽带RCS的缩减。四叶草形编码超表面可以在15.5~26.5 GHz和30.5~40.5 GHz这两个频带内实现10 dB的RCS缩减。该文加工了该编码超表面并与仿真结果进行了比较,从而有效验证了所设计的四叶草形编码超表面可以在宽频带内实现RCS的缩减。

关键词：编码超表面水循环算法雷达散射截面漫散射四叶草形

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Thermal Analysis of mHD Non-Newtonian Nanofluids over a Porous media

引用

Computer modeling in Engineering & Sciences 2020年第12期125卷 1119-1134页

作者： Asad Ejaz Imran Abbas yasir Nawaz muhammad Shoaib Arif Wasfi Shatanawi Javeria Nawaz Abbasi Stochastic Analysis&Optimization Research Group Department of MathematicsAir UniversityIslamabad44000Pakistan Department of mathematics and General Sciences Prince Sultan UniversityRiyadh11586Saudi Arabia Department of medical Research China Medical University HospitalChina Medical UniversityTaichung40402TaiwanChina Department of mathematics Hashemite UniversityZarqa13116Jordan Department of mathematics Comsats UniversityIslamabad44000Pakistan

In the present research,Tiwari and Das model are used for the impact of a magnetic field on non-Newtonian nanofluid flow in the presence of injection and *** PDEs are converted into ordinary differential equations(ODEs)using the similarity *** obtained ordinary differential equations are solved numerically using shooting method along with *** of the present study uses nanoparticles(NPs)like TiO_(2) andAl_(2)O_(3) and sodium carboxymethyl cellulose(CmC/water)is considered as a base fluid(BF).This study is conducted to find the influence of nanoparticles,Prandtl number,and magnetic field on velocity and temperature profile,however,the Nusselt number and coefficient of skin friction parameters are also presented in detail with the variation of nanoparticles and *** obtained results of the present study are presented *** addition to these,some simulations of partial differential equations are also shown using software for graphing surface plots of velocity profile and streamlines along with surface plots and isothermal contours of the temperature profile.

关键词： mHD non-Newtonian nanofluids porous medium similarity solution Blasius flow

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A Finite Difference method and Effective modification of Gradient Descent Optimization Algorithm for mHD Fluid Flow Over a Linearly Stretching Surface

引用

Computers, materials & Continua 2020年第2期62卷 657-677页

作者： yasir Nawaz muhammad Shoaib Arif mairaj Bibi Javeria Nawaz Abbasi Umer Javed Amna Nazeer Stochastic Analysis&Optimization Research Group Department of MathematicsAir UniversityPAF Complex E-9Islamabad44000Pakistan Department of mathematics Comsats UniversityChak Shahzad CampusIslamabad44000Pakistan Department of Electrical and Computer Engineering Comsats UniversityIslamabadWah CampusWah Cantt47040Pakistan

Present contribution is concerned with the construction and application of a numerical method for the fluid flow problem over a linearly stretching surface with the modification of standard Gradient descent Algorithm to solve the resulted difference *** flow problem is constructed using continuity,and Navier Stoke equations and these PDEs are further converted into boundary value problem by applying suitable similarity transformations.A central finite difference method is proposed that gives third-order accuracy using three grid *** stability conditions of the present proposed method using a Gauss-Seidel iterative procedure is found using Von-Neumann stability criteria and order of the finite difference method is proved by applying the Taylor series on the discretised *** comparison of the presently modified optimisation algorithm with the Gauss-Seidel iterative method and standard Newton’s method in optimisation is also *** can be concluded that the presently modified optimisation Algorithm takes a few iterations to converge with a small value of the parameter contained in it compared with the standard descent algorithm that may take millions of iterations to *** present modification of the steepest descent method converges faster than Gauss-Seidel method and standard steepest descent method,and it may also overcome the deficiency of singular hessian arise in Newton’s method for some of the cases that may arise in optimisation problem(s).

关键词： magnetohydrodynamic exact finite difference scheme optimization algorithm stability&convergence

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A Porous Nano-micro-Composite as a High-Performance Bi-Functional Air Electrode with Remarkable Stability for Rechargeable Zinc-Air Batteries

引用

Nano-micro Letters 2020年第10期12卷 87-102页

作者： yasir Arafat muhammad Rizwan Azhar Yijun Zhong Xiaomin Xu moses OTadé Zongping Shao WA School of mines:minerals Energy and Chemical Engineering(WASM‑MECE)Curtin UniversityPerthWA 6845Australia School of Engineering Edith Cowan UniversityPerthWA 6027Australia State Key Laboratory of materials‑Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 210009JiangsuPeople’s Republic of China

The development of bi-functional electrocatalyst with high catalytic activity and stable performance for both oxygen evolution/reduction reactions(OER/ORR)in aqueous alkaline solution is key to realize practical application of zinc-air batteries(ZABs).In this study,we reported a new porous nano-micro-composite as a bifunctional electrocatalyst for ZABs,devised by the in situ growth of metal-organic framework(mOF)nanocrystals onto the micrometersized Ba0.5Sr0.5Co0.8Fe0.2O3(BSCF)perovskite *** carbonization,mOF was converted to porous nitrogen-doped carbon nanocages and ultrafine cobalt oxides and CoN4 nanoparticles dispersing inside the carbon nanocages,which further anchored on the surface of BSCF *** homogeneously dispersed BSCF perovskite particles in the surfactant;subsequently,ZIF-67 nanocrystals were grown onto the BSCF *** this way,leaching of metallic or organic species in mOFs and the aggregation of BSCF were effectively suppressed,thus maximizing the number of active sites for improving *** BSCF in turn acted as catalyst to promote the graphitization of carbon during pyrolysis,as well as to optimize the transition metal-tocarbon ratio,thus enhancing the ORR catalytic activity.A ZAB fabricated from such air electrode showed outstanding performance with a potential gap of only 0.83 V at 5 mA cm-2 for OER/***,no obvious performance degradation was observed for the continuous charge-discharge operation for 1800 cycles over an extended period of 300 h.

关键词： BSCF perovskites ZIF-67 Porous carbon Zn-air batteries Oxygen evolution reaction Oxygen reduction reaction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ultra-Low Power Small Size 5.8 GHz RF Transceiver Design for WimAX/4G Applications

引用

Journal of Beijing Institute of Technology 2019年第1期28卷 103-108页

作者： muhammad yasir Faheem Shuna'n Zhong Abid Ali minhas muhammad Basit Azeem School of Information and Electronics Beijing Institute of Technology College of Computer and Information Systems Al Yamamah University Department of Electrical Engineering COMSATS University IslamabadLahore Campus

A state of the art ultra-low power small sized transceiver design has been *** device consists of four blocks,including a frequency synthesizer(FS),a crystal oscillator(XO),transmitter and receiver attached with an *** has been seen that wireless information technology and systems have played a vital role in the transformation of society in different aspects of *** wireless communications including WimAX/4G have attracted researchers and ***/4G applications need a transceiver that can be used in the worst channel conditions,but with low power consumption and low input voltage at the 5.8 GHz *** proposed transceiver operates on 1.2 *** operating frequency,noise figure(NF)and receiver gain are 5.8 GHz,4.0 dB and 90 dB *** is a highly compatible transceiver with all the 4G *** details and results have revealed that the proposed transceiver is much more efficient than the previously proposed transceivers in literature.

关键词： worldwide interoperability for microwave access frequency synthesizer(FS) power amplifier low noise amplifier

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Daily Lifestyle Habits as Risk Factors for Plaque-Induced Gingivitis and Periodontitis Severity and Grading among Samples of Dental Students at King Khalid University

引用

International Journal of Clinical medicine 2023年第2期14卷 65-78页

作者： mohammed m. A. Abdullah Al-Abdaly Amer Hassan Alasmari Feras Ali Alsaeed Ali Abdullah Ali Alqhtani Fahad Hassan Alhifthi yasir Saad Jaadan Periodontics and Community Dental Sciences College of Dentistry King Khalid University Abha Saudi Arabia College of Dentistry King Khalid University Abha Saudi Arabia

Objective: To assess daily lifestyle habits as risk factors for plaque-induced gingivitis and periodontitis severity and grading among samples of dental students at King Khalid University. material and methods: This study included 150 male participants. They were divided according to the levels into three equal groups: levels 5, 6, and 7 (group I), levels 8, 9, 10 (group II) and levels 11, 12, and interns (group III). This study consisted of questions related to age, gender, educational level, father’s education, mother’s education, home ownership, brushing teeth more than or twice a day, in addition to daily lifestyle habits that were daily smoking, daily use of sugary drinks, and daily use of sugary foods. Some clinical parameters of plaque-induced gingivitis and periodontitis and the percentage of radiographic bone loss were recorded. All data were collected and analyzed using Tukey’s test and Chi-square test. A P-value of less than 0.5 (p Results: One hundred fifty male dental students of different levels in the college of dentistry at King Khalid University participated in the study in three groups (I, II, and III). The mean age of group III is more than that of group II and group I, with highly statistically significant differences (p 30%) were more among the participants in group I than the participants in groups III and II. There was an increase in the percentage of affected participants with stages III and IV of clinical attachment loss (CAL), periodontal pocket depth (PPD), radiographic bone loss (%RBL), tooth mobility, as well as glycated hemoglobin (HbA1c) test values (>7%), and the number of cigarettes smoked per day (>10 cigs) in group III more than in group II and I. Conclusion: We conclude that the severity and grading of plaque-induced gingivitis were higher among the participants in group I, while the severity and grading of periodontitis were higher among the participants in group III due to the different impact of their daily lifestyle habits.

关键词： Daily Lifestyle Dental Students King Khalid University Periodontitis Plaque-Induced Gingivitis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Exploration of Genetic Pattern of Phenological Traits in Wheat (Triticum aestivum L.) under Drought Stress

引用

Phyton-International Journal of Experimental Botany 2022年第12期91卷 2733-2758页

作者： Iqra Ishaaq muhammad Umer Farooq Syeda Anjum Tahira Rizwana maqbool Celaleddin Barutçular muhammad yasir Saira Bano Zaid Ulhassan Ghassan Zahid muhammad Ahsan Asghar Sajad Hussain Kocsy Gabor Ulkar Ibrahimova Jianqing Zhu Anshu Rastogi Department of Plant Breeding and Genetics Faculty of AgricultureUniversity of Agriculture FaisalabadFaisalabad38040Pakistan Department of Botany Faculty of Life SciencesUniversity of OkaraOkara56130Pakistan Department of Field Crops Faculty of AgricultureÇukurova UniversityAdana01330Turkey Department of Crop Genetics and Breeding Rice Research InstituteSichuan Agricultural UniversityChengdu Campus611130China Key Laboratory of Agriculture Products Improvement Zhejiang Agriculture and Forestry UniversityHangzhou311300China Institute of Crop Science Ministry of Agriculture and Rural Affairs Key Laboratory of Spectroscopy SensingZhejiang UniversityHangzhou310058China Department of Biotechnology Institute of Natural and Applied SciencesÇukurova UniversityAdana01330Turkey Agricultural Institute ELKH Centre for Agricultural ResearchMartonvásár2462Hungary College of Agronomy Sichuan Agricultural UniversityYa’an611130China Institute of molecular Biology and Biotechnologies Azerbaijan National Academy of SciencesBakuAZ 1073Azerbaijan Research Institute of Crop Husbandry Ministry of Agriculture of the Azerbaijan RepublicBakuAZ 1098Azerbaijan Laboratory of Bioclimatology Department of Ecology and Environmental ProtectionPoznan University of Life SciencesPoznan60-649Poland

Drought is the major detrimental environmental factor for wheat(Triticum aestivum L.)*** exploration of genetic patterns underlying drought tolerance is of great *** we report the gene actions controlling the phenological traits using the line×tester model studying 27 crosses and 12 parents under normal irrigation and drought *** results interpreted via multiple analysis(mean performance,correlations,principal component,genetic analysis,heterotic and heterobeltiotic potential)disclosed highly significant differences among *** phenological waxiness traits(glume,boom,and sheath)were strongly *** leaf area exhibits a positive association with peduncle and spike length under *** growing degree days(heat-units)greatly influence spikelets and grains per spike,however,the grain yield/plant was significantly reduced(17.44 g to 13.25 g)under *** principal components based on eigenvalue indicated significant PCs(first-seven)accounted for 79.9%and 73.9%of total variability under normal irrigation and drought,*** investigated yield traits showed complex genetic *** genetic advance confronted a moderate to high heritability for spikelets/spike and grain yield/*** traits conditioned by dominant genetic effects in normal irrigation were inversely controlled by additive genetic effects under drought and vice *** magnitude of dominance effects for phenological and yield traits,i.e.,leaf twist,auricle hairiness,grain yield/plant,spikelets,and grains/spike suggests that selection by the pedigree method is appropriate for improving these traits under normal irrigation conditions and could serve as an indirect selection index for improving yield-oriented traits in wheat populations for drought ***,the phenotypic selection could be more than effective for traits conditioned by additive genetic effects under *** suggest five significant cross combinations base

关键词： Wheat drought phenological traits genetic variability heterotic and heterobeltiotic potential

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Quantitative Comparison of Calcium Hydroxide Removal by EndoActivator, Ultrasonic and ProTaper File Agitation Techniques: An in vitro Study

引用

Journal of Huazhong University of Science and Technology(medical Sciences) 2013年第1期33卷 142-145页

作者： Huda yasir Khaleel Ahmed Jawad Al-Ashaw 杨焰逄爱慧马净植 Department of Stomatology Tongji HospitalTongji Medical CollegeHuazhong University of Science and Technology Conservative Department College of DentistryMosul University

Calcium hydroxide （CH） dressing residues can compromise endodontic sealing. This study aimed to evaluate the amount of remaining CH in root canals after mechanical removal by four groups of irrigation techniques including needle irrigation only, ProTaper file, EndoActivator, and ultrasonic file. Fifteen extracted single-rooted teeth were collected and used for all four groups. The samples were firstly prepared by ProTaper rotary instruments, and then sectioned longitudinally through the long axis of the root canals, followed by final reassembling by wires. CH was kept in the canals for 7 days setting. The removal procedure began with 5 mL of 2.5% sodium hypochlorite （NaOC1） followed by 1 mL of 17% ethylenediaminetetraacetic acid and a final irrigation with 5 mL of 2.5% NaOC1 solution for all groups. No additional agitation of the irrigant was performed in group 1, while agitation for 20 s be- tween irrigants was done with F2 ProTaper rotary file in group 2, EndoActivator with tip size 25/.04 in group 3 and by an ultrasonic file 25/.02 in group 4. The total activation time was 60 s. The roots were then disassembled and captured by digital camera. The ratio of CH coated surface area to the surface area of the whole canal as well as each third of the canal was calculated. The data were statistically ana- lyzed by one-way ANOVA using post hoc Tukey test. Results showed that none of the four techniques could remove all CH. No significant difference was found between EndoActivator and ultrasonic tech- niques. However, they both removed significantly more CH than ProTaper and needle irrigation （P=0.0001）. In conclusion, the sonic and ultrasonic agitation techniques were more effective in removing intracanal medicaments than the ProTaper rotary file and needle irrigation in all thirds of the canal.

关键词： calcium hydroxide removal irrigation ProTaper EndoActivator ultrasonic

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Prediction of promiscuous T cell epitopes in RNA dependent RNA polymerase of Chikungunya virus

引用

Asian Pacific Journal of Tropical medicine 2017年第8期10卷 825-829页

作者： yasir Waheed Sher Zaman Safi muzammil Hasan Najmi Hafsa Aziz muhammad Imran Foundation University medical College Foundation University IslamabadDHA-I Islamabad(44000)Pakistan Interdisciplinary Research Centre in Biomedical materials(IRCBm) COMSATS Institute of Information TechnologyLahore CampusLahorePakistan Nuclear medicine Oncology and Radiotherapy Institute Islamabad Islamabad(44000)Pakistan Department of medical Laboratory Sciences(DmLS) Faculty of Health and Allied Sciences(FHAS)Imperial College of Business Studies(ICBS)LahorePakistan Department of microbiology University of Health SciencesLahorePakistan

Objective: To explore RNA dependent RNA polymerase of Chikungunya virus(CHIKV) and develop T cell based epitopes with high antigenicity and good binding affinity for the human leukocyte antigen(HLA) classes as targets for epitopes based CHIKV vaccine. methods: In this study we downloaded 371 non-structural protein 4 protein sequences of CHIKV belonging to different regions of the world from the US National Institute of Allergy and Infectious Diseases(NIAID) virus pathogen resource database. All the sequences were aligned by using CLUSTALW software and a consensus sequence was developed by using Uni Pro U Gene Software version 1.2.1. PropredⅠand Propred software were used to predict HLAⅠ and HLAⅡ binding promiscuous epitopes from the consensus sequence of non-structural protein 4 protein. The predicted epitopes were analyzed to determine their antigenicity through Vaxijen server version 2.0. All the HLAⅠ binding epitopes were scanned to determine their immunogenic potential through the Immune Epitope Database(IEDB). All the predicted epitopes of our study were fed to IEDB database to determine whether they had been tested earlier. Results: Twenty two HLA class Ⅱ epitopes and eight HLA classⅠepitopes were predicted. The promiscuous epitopes WmNmEVKII at position 486–494 and VRRLNAVLL at 331–339 were found to bind with 37 and 36 of the 51 HLA class Ⅱ alleles respectively. Epitope mANRSRYQS at position 58–66 and epitopes YQSRKVENm at positions 64–72 were predicted to bind with 12 and 9 HLAⅠI alleles with antigenicity scores of 0.754 9 and 1.013 0 respectively. Epitope YSPPINVRL was predicted to bind 18 HLAⅠ alleles and its antigenicity score was 1.425 9 and immunogenicity score was 0.173 83. This epitope is very useful in the preparation of a universal vaccine against CHIKV infection. Conclusions: Epitopes reported in this study showed promiscuity, antigenicity as well as good binding affinity for the HLA classes. These epitopes will provide the baseline for development

关键词： Chikungunya 病毒 Epitope 疫苗 HLA 绑定 T 房间 epitopes

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：