检索结果-南通市图书馆

Risk factors and outcomes of peptic ulcer bleed in a Pakistani population:A single-center observational study

World Journal of Gastrointestinal Pharmacology and Therapeutics 2024年第3期15卷 1-9页

作者： Nazish Butt muhammad tayyab usmani Nimrah Mehak Saba Mughal Fakhar Ali Qazi-Arisar Ghulam Mohiuddin Gulzar Khan Department of Gastroenterology Jinnah Postgraduate Medical CentreKarachi 75505SindhPakistan National Institute of Liver&GI Diseases Dow University of Health SciencesKarachi 75330SindhPakistan School of Public Health Dow University of Health SciencesKarachi 75330SindhPakistan

BACKGROUND Peptic ulcer disease(PUD)remains a significant healthcare burden,contributing to morbidity and mortality *** advancements in therapies,its prevalence persists,particularly in regions with widespread nonsteroidal antiinflammatory drugs(NSAIDs)use and Helicobacter pylori *** To comprehensively analyse the risk factors and outcomes of PUD-related upper gastrointestinal(GI)bleeding in Pakistani *** This retrospective cohort study included 142 patients with peptic ulcer bleeding who underwent upper GI endoscopy from January to December *** on demographics,symptoms,length of stay,mortality,re-bleed,and Forrest classification was *** The mean age of patients was 53 years,and the majority was men(68.3%).Hematemesis(82.4%)and epigastric pain(75.4%)were the most common presenting *** patients(73.2%)were discharged within five *** mortality rates at one week and one month were 10.6%and 14.8%,***-bleed within 24 h and seven days occurred in 14.1%and 18.3%of patients,*** ulcers were Forrest class(FC)Ⅲ(72.5%).Antiplatelet use was associated with higher mortality at 7 and 30 d,while alternative medications were linked to higher 24-hour re-bleed *** use was associated with more FCⅢ***-bleed at 24 h and 7 d was strongly associated with one-week or one-month *** Antiplatelet use and rebleeding increase the risk of early mortality in PUD-related upper GI bleeding,while alternative medicines are associated with early rebleeding.

关键词： Non variceal bleed Mortality Re-bleed Forrest classification Antiplatelets Alternative medicines

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

Alternative Strategy for Development of Dielectric Calcium Copper Titanate‑Based Electrolytes for Low‑Temperature Solid Oxide Fuel Cells

引用

Nano-Micro Letters 2025年第1期17卷 310-332页

作者： Sajid Rauf muhammad Bilal Hanif Zuhra tayyab Matej Veis MAKYousaf Shah Naveed Mushtaq Dmitry Medvedev Yibin Tian Chen Xia Martin Motola Bin Zhu College of Mechatronics and Control Engineering Shenzhen UniversityShenzhen 518060People’s Republic of China Department of Inorganic Chemistry Faculty of Natural SciencesComenius University BratislavaIlkovicova684215 BratislavaSlovakia Energy Storage Joint Research Center School of Energy and EnvironmentSoutheast UniversityNanjing 210096People’s Republic of China Hydrogen Energy Laboratory Ural Federal University620002 EkaterinburgRussia Laboratory of Electrochemical Devices Based on Solid Oxide Proton Electrolytes Institute of High Temperature Electrochemistry620066 EkaterinburgRussia School of Microelectronics Hubei UniversityWuhan 430062People’s Republic of China

The development of low-temperature solid oxide fuel cells(LT-SOFCs)is of significant importance for realizing the widespread application of *** has stimulated a substantial materials research effort in developing high oxide-ion conductivity in the electrolyte layer of *** this context,for the first time,a dielectric material,CaCu_(3)Ti_(4)O_(12)(CCTO)is designed for LT-SOFCs electrolyte application in this *** individual CCTO and its heterostructure materials with a p-type Ni_(0.8)Co_(0.15)Al_(0.05)LiO_(2−δ)(NCAL)semiconductor are evaluated as alternative electrolytes in LT-SOFC at 450–550℃.The single cell with the individual CCTO electrolyte exhibits a power output of approximately 263 mW cm^(-2) and an open-circuit voltage(OCV)of 0.95 V at 550℃,while the cell with the CCTO–NCAL heterostructure electrolyte capably delivers an improved power output of approximately 605 mW cm^(-2) along with a higher OCV over 1.0 V,which indicates the introduction of high hole-conducting NCAL into the CCTO could enhance the cell performance rather than inducing any potential short-circuiting *** is found that these promising outcomes are due to the interplay of the dielectric material,its structure,and overall properties that led to improve electrochemical mechanism in CCTO–***,density functional theory calculations provide the detailed information about the electronic and structural properties of the CCTO and NCAL and their heterostructure CCTO–*** study thus provides a new approach for developing new advanced electrolytes for LT-SOFCs.

关键词： LT-SOFCs Dielectric CaCu_(3)Ti_(4)O_(12) Semiconductor Ni_(0.8)Co_(0.15)Al_(0.05)LiO_(2−δ) Ionic conductivity Heterostructure electrolyte

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

Correction:Deep Learning-Enhanced Brain Tumor Prediction via Entropy-Coded BPSO in CIELAB Color Space

引用

Computers, Materials & Continua 2025年第1期82卷 1461-1461页

作者： Mudassir Khalil muhammad Imran Sharif Ahmed Naeem muhammad Umar Chaudhry Hafiz tayyab Rauf Adham E.Ragab Department of Computer Engineering Bahauddin Zakariya UniversityMultan60000Pakistan Department of Computer Science Kansas State UniversityManhattanKS 66506USA Department of Computer Science University of Management and TechnologyLahore54000Pakistan Independent Researcher BradfordBD80HSUK Industrial Engineering Department Collage of EngineeringKing Saud UniversityP.O.Box 800Riyadh11421Saudi Arabia

In the article“Deep Learning-Enhanced Brain Tumor Prediction via Entropy-Coded BPSO in CIELAB Color Space”by Mudassir Khalil,muhammad Imran Sharif,Ahmed Naeem,muhammad Umar Chaudhry,Hafiz tayyab Rauf,Adham *** Computers,Materials&Continua,2023,Vol.77,No.2,pp.2031–***:10.32604/cmc.2023.043687,URL:https://***/cmc/v77n2/54831,there was an error regarding the affiliation for the author Hafiz tayyab *** of“Centre for Smart Systems,AI and Cybersecurity,Staffordshire University,Stoke-on-Trent,ST42DE,UK”,the affiliation should be“Independent Researcher,Bradford,BD80HS,UK”.

关键词： Deep Code CIELAB

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

Effective removal of chromium,copper,and nickel heavy metal ions from industrial electroplating wastewater by in situ oxidative adsorption using sodium hypochlorite as oxidant and sodium trititanate nanorod as adsorbent

引用

Chinese Journal of Chemical Engineering 2024年第10期74卷 312-330页

作者： muhammad tayyab Butt Hengbo Yin Faculty of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang 212013China

Sodium hypochlorite and synthesized sodium trititanate nanorods(Na_(2)Ti_(3)O_(7),186 nm×1270 nm)were used as the oxidant and adsorbents for in situ oxidative adsorption treatment of actual electroplating wastewater containing Cr(Ⅵ)(2.6-5.2 mg·L^(-1)),Cu^(2+)(2.7-5.4 mg·L^(-1)),and Ni^(2+)(0.2705-0.541 mg·L^(-1))ions at pH of 8.8-9.1 and 20-60℃.The as-synthesized sodium trititanate nanorods were characterized by XRD,HRTEM,N2 adsorption/desorption,SEM,EDX,and zeta potential *** concentrations of heavy metal ions in wastewater were analyzed by ICP *** in situ oxidative adsorption treatment under the concentrations of 25 g·L^(-1) for sodium hypochlorite and 125 mg·L^(-1) for sodium trititanate nanorods at 60℃ for 5 h,the heavy metal ion concentrations could be reduced from initial value of 2.6 to final value of 1.92 mg·L^(-1) for Cr(Ⅵ),3.6 to 0.17 mg·L^(-1) for Cu^(2+),and from 0.2705 to 0.097 mg·L^(-1) for Ni^(2+),***(Ⅵ),Cu^(2+) and Ni^(2+) ions could be effectively removed by the in situ oxidative adsorption *** in situ oxidative adsorption processes of Cr(Ⅵ),Cu^(2+) and Ni^(2+) ions are satisfactorily simulated by the pseudo-second order adsorption kinetics and Langmuir adsorption isotherm,*** thermodynamics analyses reveal that the oxidative adsorption processes of Cr(Ⅵ),Cu^(2+) and Ni^(2+) ions are spontaneous and *** oxidation degree of metalcontained complexes influences the values of thermodynamics functions.

关键词： Heavy metals Oxidative adsorption Electroplating wastewater Sodium trititanate nanorods Nanomaterials Oxidation

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

Effect of thermomechanical cyclic quenching and tempering treatments on microstructure,mechanical and electrochemical properties of AISI 1345 steel

引用

International Journal of Minerals,Metallurgy and Materials 2021年第4期28卷 688-698页

作者： muhammad Arslan Hafeez Ameeq Farooq Kaab Bin tayyab and muhammad Adnan Arshad School of Civil and Environmental Engineering National University of Sciences and TechnologyIslamabad 44000Pakistan Department of Metallurgy&Materials Engineering University of the Punjab54590 LahorePakistan

Thermomechanical cyclic quenching and tempering(TMCT)can strengthen steels through a grain size reduction *** effect of TMCT on microstructure,mechanical,and electrochemical properties of AISI 1345 steel was *** samples heated to 1050℃,rolled,quenched to room temperature,and subjected to various cyclic quenching and tempering heat treatments were named TMCT-1,TMCT-2,and TMCT-3 samples,*** analysis revealed that microstructures of all the treated samples contained packets and blocks of well-refined lath-shaped martensite and retained austenite phases with varying grain sizes(2.8–7.9μm).Among all the tested samples,TMCT-3 sample offered an optimum combination of properties by showing an improvement of 40%in tensile strength and reduced 34%elongation compared with the non-treated *** results were in good agreement with mechanical tests as the TMCT-3 sample exhibited a 51%improvement in indentation hardness with almost identical reduced elastic modulus compared with the non-treated *** electrochemical properties were analyzed in 0.1 M NaHCO_(3) solution by potentiodynamic polarization and electrochemical impedance *** a result of TMCT,the minimum corrosion rate was 0.272 mm/a,which was twenty times less than that of the nontreated *** impedance results showed the barrier film mechanism,which was confirmed by the polarization results as the current density decreased.

关键词： thermomechanical treatment cyclic heat-treatment nanoindentation potentiodynamic polarization electrochemical impedance spectroscopy

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

Unfolding the structural features of NASICON materials for sodium-ion full cells

引用

Carbon Energy 2022年第5期4卷 776-819页

作者： muhammad tayyab Ahsan Zeeshan Ali muhammad Usman Yanglong Hou School of Materials Science and Engineering Peking UniversityBeijingChina School of Chemical and Materials Engineering National University of Sciences and Technology(NUST)IslamabadPakistan Beijing Key Laboratory for Magnetoelectric Materials and Devices(BKL-MMD) School of Materials Science and EngineeringPeking UniversityBeijingChina

Sodium-ion batteries(SIBs)are potential candidates for the replacement of lithium-ion batteries to meet the increasing demands of electrical storage systems due to the low cost and high abundance of *** superionic conductor(NASICON)structured materials have attracted enormous interest in recent years as electrode materials for safer and long-term performance of SIBs for electric energy storage smart *** materials have a threedimensional robust framework,high redox potential,thermal stability,and a fast Na^(+)-ion diffusion ***,NASICON has low intrinsic electronic conductivity,which limits the electrochemical *** review describes the structural features of NASICONs to illustrate the ion storage mechanism and electrochemical performance of *** of the NASICON crystal structure,the affiliated Na^(+)-ion diffusion mechanism,morphology,and electrochemical performance of these materials in sodiumion half-cells as well as full cells are *** addition to the application as electrode materials,the use of NASICONs as solid electrolytes is also elaborated in solid-state *** on these aspects,we have provided more perspectives in terms of the commercialization of SIBs and strategies to overcome the limitations of ***,this review is expected to provide the researchers of energy storage with an in-depth understanding of NASICON materials with the knowledge of structural features,which will provide a new avenue on the practicality of SIBs.

关键词： cathode materials electrical storage systems full cells NASICON materials sodium-ion batteries

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 standard formulation for the installation of suction caissons in sand

引用

Journal of Ocean Engineering and Science 2019年第4期4卷 395-405页

作者： Ayed Eid Alluqmani muhammad tayyab Naqash Ouahid Harireche Department of Civil Engineering Faculty of EngineeringIslamic University of MadinahMadinahSaudi Arabia

Suction assisted installation of caisson foundations in sand relies on the developed seepage around the caisson *** is known to produce soil loosening inside the caisson cavity and an overall reduction in soil resistance to caisson *** the other hand,suction must be controlled so that no excessive piping is induced within the sand volume trapped inside the caisson *** it extends over the full embedded length of the caisson wall,piping may lead to the formation of piping channels,which may compromise the established seal between caisson and soil and ultimately cause the installation process to stop.A safe installation process requires a proper design procedure to ensure that a safe suction can be predicted prior to *** present paper provides a framework where analytical expressions are obtained for the required suction magnitude,and for the critical suction that causes piping to initiate at the caisson *** analytical expressions are derived for a normalized caisson geometry,based on compiled results obtained from finite element analysis of seepage around a caisson wall,at various installation *** developed analytical formulation applies independently of caisson dimensions such as diameter,height and wall *** suction for piping condition is also obtained under analytical form as a function of normalized penetration *** developed formulation can also be easily incorporated into design procedures or used in design codes without a need for a preliminary seepage analysis to be *** proposed suction predictions for the whole process of caisson installation in sand are validated against field trials reported in the literature.

关键词： Suction caisson Normalized seepage problem Polynomial regressions Suction profile Critical suction for piping

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

Identification of Thoracic Diseases by Exploiting Deep Neural Networks

引用

Computers, Materials & Continua 2021年第3期66卷 3139-3149页

作者： Saleh Albahli Hafiz tayyab Rauf muhammad Arif Md Tabrez Nafis Abdulelah Algosaibi Department of Information Technology College of ComputerQassim UniversityBuraydahSaudi Arabia Department of Computer Science Univesity of Gurjat52250Pakistan School of Computer Science Guanzghou UniversityGuangzhou510006China Department of Computer Science&Engineering Jamia HamdardNew DelhiIndia Department of Computer Science CCSITKing Faisal UniversitySaudi Arabia

With the increasing demand for doctors in chest related diseases,there is a 15%performance gap every five *** this gap is not filled with effective chest disease detection automation,the healthcare industry may face unfavorable *** are only several studies that targeted X-ray images of cardiothoracic *** of the studies only targeted a single disease,which is *** some related studies have provided an identification framework for all classes,the results are not encouraging due to a lack of data and imbalanced data *** research provides a significant contribution to Generative Adversarial Network(GAN)based synthetic data and four different types of deep learning-based models that provided comparable *** models include a ResNet-152 model with image augmentation with an accuracy of 67%,a ResNet-152 model without image augmentation with an accuracy of 62%,transfer learning with Inception-V3 with an accuracy of 68%,and finally ResNet-152 model with image augmentation but targeted only six classes with an accuracy of 83%.

关键词： GAN CNN chest diseases inception-V3 ResNet152

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

Visual News Ticker Surveillance Approach from Arabic Broadcast Streams

引用

Computers, Materials & Continua 2023年第3期74卷 6177-6193页

作者： Moeen tayyab Ayyaz Hussain Usama Mir M.Aqeel Iqbal muhammad Haneef Department of Computer Science and Software Engineering International Islamic UniversityIslamabad44000Pakistan Department of Computer Science Quaid-i-Azam UniversityIslamabad44000Pakistan Department of Computer Science Senior Member IEEEUniversity of WindsorN9B 3P4Canada Department of Software Engineering Foundation University IslamabadIslamabad44000Pakistan Department of Electrical Engineering Foundation University IslamabadIslamabad44000Pakistan

The news ticker is a common feature of many different news networks that display headlines and other *** ticker recognition applications are highly valuable in e-business and news surveillance for media regulatory *** this paper,we focus on the automatic Arabic Ticker Recognition system for the Al-Ekhbariya news *** primary emphasis of this research is on ticker recognition methods and storage *** that end,the research is aimed at character-wise explicit segmentation using a semantic segmentation technique and words identification *** proposed learning architecture considers the grouping of homogeneousshaped *** incorporates linguistic taxonomy in a unified manner to address the imbalance in data distribution which leads to individual ***,experiments with a novel ArabicNews Ticker(Al-ENT)dataset that provides accurate character-level and character components-level labeling to evaluate the effectiveness of the suggested *** proposed method attains 96.5%,outperforming the current state-of-the-art technique by 8.5%.The study reveals that our strategy improves the performance of lowrepresentation correlated character classes.

关键词： Arabic text recognition optical character recognition deep convolutional network SegNet LeNet

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

Polarization state and image rotation via spontaneously generated coherence in a spinning fast light medium

引用

Communications in Theoretical Physics 2020年第11期72卷 99-103页

作者： Habibur Rahman Mansoor Khan Shabir Ahmad muhammad tayyab Haseena Bibi Hazrat Ali Department of Physics Govt Post Graduate College Dargai MalakandPakistan Department of Physics University of Malakand ChakdaraDir(L)Pakistan Department of Physics Gomal University Dera Ismail KhanPakistan Department of Physics Abbottabad University of Science and TechnologyHavellainPakistan

In this article we propose a four-level rubidium(Rb87)atomic system for observing interesting features of polarization state rotation in a fast light *** investigate spontaneously generated coherence(SGC)for a spinning *** show how SGC can affect different spectral profiles of the polarization state and images in this suggested *** observe a 0.5 radian rotation and 2.5 microsecond time advancement in our proposed *** precise results will provide a new platform for researchers in quantum optics due to its applications in image coding,telecommunications and cloaking technology.

关键词： spinning medium SGC effect image coding

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

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：