检索结果-南通市图书馆

Computational Modeling of Reaction-Diffusion COVID-19 Model Having Isolated Compartment

Computer Modeling in Engineering & Sciences 2023年第5期135卷 1719-1743页

作者： Muhammad Shoaib Arif Kamaleldin Abodayeh asad ejaz Department of Mathematics and Sciences College of Humanities and SciencesPrince Sultan UniversityRiyadh11586Saudi Arabia Department of Mathematics Air UniversityPAF Complex E-9Islamabad44000Pakistan

Cases of COVID-19 and its variant omicron are raised all across the *** most lethal form and effect of COVID-19 are the omicron version,which has been reported in tens of thousands of cases daily in numerous *** WHO(World health organization)records on 30 December 2021,the cases of COVID-19 were found to be maximum for which boarding individuals were found 1,524,266,active,recovered,and discharge were found to be 82,402 and 34,258,778,*** there were 160,989 active cases,33,614,434 cured cases,456,386 total deaths,and 605,885,769 total samples *** far,1,438,322,742 individuals have been *** coronavirus or COVID-19 is inciting panic for several *** is a new virus that has affected the whole *** have introduced certain ways to prevent the *** can lower the danger of infection by reducing the contact rate with other *** crowded places and social events withmany people reduces the chance of one being exposed to the *** deadly COVID-19 spreads *** is thought that the upcoming waves of this pandemicwill be evenmore *** have presented severalmathematical models to study the pandemic and predict future *** need of the hour is to restrict the mobility to control the infection from ***,separating affected individuals from healthy people is essential to control the *** consider the COVID-19 model in which the population is divided into five *** present model presents the population’s diffusion effects on all susceptible,exposed,infected,isolated,and recovered *** reproductive number,which has a key role in the infectious models,is *** equilibrium points and their stability is *** numerical simulations,finite difference(FD)schemes like nonstandard finite difference(NSFD),forward in time central in space(FTCS),and Crank Nicolson(CN)schemes are *** core characteristics

关键词： Reproductive number stability Routh Hurwitz criterion variational matrix NSFD scheme FTCS scheme Crank Nicolson scheme consistency

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

Numerical Study for Magnetohydrodynamic(MHD)Unsteady Maxwell Nanofluid Flow Impinging on Heated Stretching Sheet

引用

Computer Modeling in Engineering & Sciences 2022年第11期133卷 303-325页

作者： Muhammad Shoaib Arif Muhammad Jhangir Yasir Nawaz Imran Abbas Kamaleldin Abodayeh asad ejaz Department of Mathematics and Sciences College of Humanities and SciencesPrince Sultan UniversityRiyadh11586Saudi Arabia Department of Mathematics Air UniversityIslamabad44000Pakistan

The numerous applications of Maxwell Nanofluid Stagnation Point Flow,such as those in production industries,the processing of polymers,compression,power generation,lubrication systems,food manufacturing and air conditioning,among other applications,require further research into the effects of various parameters on flow *** this paper,a study has been carried out for the heat andmass transfer of Maxwell nanofluid flow over the heated stretching sheet.A mathematical model with constitutive expressions is constructed in partial differential equations(PDEs)through obligatory basic conservation laws.A series of transformations are then used to take the system into an ordinary differential equation(ODE).The boundary conditions(BCs)are also treated similarly for transforming into first-order ordinary differential equations(ODEs).Then these ODEs are computed by using the Shooting *** effect of factors on the skin friction coefficient,the local Nusselt number,and the local Sherwood number are explored,and the results are displayed *** obtained results demonstrate that by increasing the values of the Maxwell and slip velocity parameters,velocity *** investigators tasked with addressing unresolved difficulties in the realm of enclosures used in industry and engineering,we thought this work would serve as a guide.

关键词： Maxwell fluid stagnation point flow heat and mass transfer thermal radiations shooting method

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

Stability Analysis of Predator-Prey System with Consuming Resource and Disease in Predator Species

引用

Computer Modeling in Engineering & Sciences 2022年第8期132卷 489-506页

作者： asad ejaz Yasir Nawaz Muhammad Shoaib Arif Daoud S.Mashat Kamaleldin Abodayeh Department of Mathematics Air UniversityPAF Complex E-9Islamabad44000Pakistan Department of Mathematics King Abdulaziz UniversityJeddah22254Saudi Arabia Department of Mathematics and Sciences College of Humanities and SciencesPrince Sultan UniversityRiyadh11586Saudi Arabia

The present study is concerned with formulating a predator-prey eco-epidemiological mathematical model assuming that an infection exists in the predator *** two classes of predator species(susceptible and infected)compete for the same sources available in the environment with the predation *** is assumed that the disease does not spread *** proposed model is analyzed for the stability of the coexistence of the predators and *** fixed points are carried out,and the coexisting fixed point is studied in detail by constructing the Lyapunov *** movement of species in search of food or protection in their habitat has a significant influence,examined through *** ecological influences of self-diffusion on the population density of both species are *** is theoretically proved that all the under consideration species can coexist in the same *** coexistence fixed point is discussed for both diffusive and non-diffusive ***,a numerical scheme is constructed for solving time-dependent partial differential *** stability of the scheme is given,and it is applied for solving presently modified eco-epidemiological mathematical model with and without *** comparison of the constructed scheme with two exiting schemes,Backward in Time and Central in Space(BTCS)and Crank Nicolson,is also given in the form of ***,we run a computer simulation to determine the effectiveness of the proposed numerical *** readers’convenience,a computational code for the proposed discrete model scheme may be made available upon request.

关键词： Eco-epidemiology self-diffusion stability Lyapunov function proposed numerical scheme

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

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

Optimized Binary Neural Networks for Road Anomaly Detection:A TinyML Approach on Edge Devices

引用

Computers, Materials & Continua 2024年第7期80卷 527-546页

作者： Amna Khatoon Weixing Wang asad Ullah Limin Li Mengfei Wang School of Information Engineering Chang’an UniversityXi’an710064China School of Information Engineering Xi’an Eurasia UniversityXi’an710065China School of Electrical and Electronic Engineering Wenzhou UniversityWenzhou325035China

Integrating Tiny Machine Learning(TinyML)with edge computing in remotely sensed images enhances the capabilities of road anomaly detection on a broader *** devices efficiently implement a Binary Neural Network(BNN)for road feature extraction,utilizing quantization and compression through a pruning *** modifications resulted in a 28-fold decrease in memory usage and a 25%enhancement in inference speed while only experiencing a 2.5%decrease in *** showcases its superiority over conventional detection algorithms in different road image *** constrained by computer resources and training datasets,our results indicate opportunities for future research,demonstrating that quantization and focused optimization can significantly improve machine learning models’accuracy and operational *** Cortex-M0 gives practical feasibility and substantial benefits while deploying our optimized BNN model on this low-power device:Advanced machine learning in edge *** analysis work delves into the educational significance of TinyML and its essential function in analyzing road networks using remote sensing,suggesting ways to improve smart city frameworks in road network assessment,traffic management,and autonomous vehicle navigation systems by emphasizing the importance of new technologies for maintaining and safeguarding road networks.

关键词： Edge computing remote sensing TinyML optimization BNNs road anomaly detection quantization model compression

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

利用水热二次生长法制备用于H/CO分离的KAUST-8膜

引用

膜科学与技术 2024年

作者： asad Sharif 王泓博鲁金明杨建华刘毅大连理工大学吸附与无机膜研究所精细化工国家重点实验室

KAUST-8纳米片，其比表面积和孔隙率较高、铝金属位点丰富，因此，具有出色的二氧化碳吸附能力。在本研究中，采用水热二次生长技术，在粗糙的大孔α-Al2O3载体管上，引入氧化铝和硝酸镍作为前驱体，其中，Al2O3用于控制无机支柱[AlF5(H... 详细信息

KAUST-8纳米片，其比表面积和孔隙率较高、铝金属位点丰富，因此，具有出色的二氧化碳吸附能力。在本研究中，采用水热二次生长技术，在粗糙的大孔α-Al2O3载体管上，引入氧化铝和硝酸镍作为前驱体，其中，Al2O3用于控制无机支柱[AlF5(H2O)]2-的生长，Ni(NO3)2·6H2O用于提高金属前驱体镍源在溶剂中的溶解度，促进Ni（II）-吡嗪方格的形成，并与无机柱中心[AlF5(H2O)]2-反应，合成了多晶KAUST-8膜。并进一步探讨了反应物浓度、时间、温度等合成条件以及溶剂对KAUST-8膜性能的影响。优化后的KAUST-8 的H2渗透率为1.27×10-7mol·m-2s-1Pa-1（25°C、1 bar条件下），H2/CO2的理想选择性为19.3。

关键词： CO 分离 KAUST-8膜氟化金属有机框架膜水热合成 H 纯化

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Optimizing the utilization of maize silage in forage blends-based rations to improve production performance and reduce methane emissions from fattening calves

引用

International Journal of Agricultural and Biological Engineering 2024年第3期17卷 75-81页

作者： Khalid Farooq asad Sultan Assar Ali Shah Rifat Ullah Khan Rajwali Khan Ghazala Yasmeen Nazir Ahmad Khan Faculty of Animal Husbandry and Veterinary Sciences The University of AgriculturePeshawar 25130Pakistan Pakistan Scientific and Technological Information Center(PASTIC) Islamabad 44000Pakistan

This research investigated the effect of various mixtures of maize silage and ryegrass fodder on nutrient digestibility,production performance,and methane(CH4)emission of fattening ***-four fattening calves((228±10)kg body weight(BW),(280±5)d of age)were allocated to 8 diets for 84 d,according to a randomized complete block design,and the blocks were balanced for BW,age,and *** diets consisted of 4 levels of maize silages,i.e.,40%(MS40),50%(MS50),60%(MS60),and 70%(MS70)in the maize silage and ryegrass fodder mixture on a dry matter(DM)basis,and each of the mixture was supplemented with either low(LC,1.0%BW)or high(HC,1.5%BW)levels of fattening *** results revealed greater(p<0.05)intakes of DM(8.35 kg/d),organic matter(OM,7.85 kg/d),and metabolizable energy(ME,12.00 Mcal/d)in calves fed with MS70-LC *** highest(p<0.05)digestibility(g/100 g)of DM(65.2),OM(67.3),crude protein(69.1),and neutral detergent fibre(56.3)was recorded for MS40-HC *** maximum(p<0.05)average daily gain(ADG,571 g/d)was recorded for diet *** lowest value(p<0.05)of CH4 emission was recorded in MS70-LC,MS70-HC,and MS60-HC as compared to other *** 70%maize silage in the ryegrass-maize silage based diet improved ADG by 174 g/d with LC *** is concluded that the optimum inclusion level of maize silage and ryegrass in the fattening ration can improve animal production performance and reduces CH4 production and concentrate requirements of fattening calves.

关键词： average daily gain farm-grown forages forage mixture fattening calves maize silage ryegrass fodder

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

Retroperitoneal bronchogenic cyst:A case report and review of literature

引用

World Journal of Clinical Cases 2024年第15期12卷 2586-2596页

作者： Abdul Malik Qais Ahmad Naseer Muhammad asad Iqbal Shi-Ya Han Sheng-Chun Dang Department of General Surgery The Affiliated Hospital of Jiangsu UniversityZhenjiang 212001Jiangsu ProvinceChina Department of Preventive Medicine and Public Health Laboratory Science School of MedicineJiangsu UniversityZhenjiang 212013Jiangsu ProvinceChina Department of Laboratory Medicine School of MedicineJiangsu UniversityZhenjiang 212013Jiangsu ProvinceChina Department of Clinical Pharmacy Shenyang Pharmaceutical UniversityShenyang 110000Liaoning ProvinceChina Department of Surgery Siyang HospitalSuqian 223700Jiangsu ProvinceChina

BACKGROUND Bronchogenic cysts are rare developmental anomalies that belong to the category of congenital enterogenous *** arise from lung buds and are present at *** embryonic foregut is their ***,they are located within the chest cavity,particularly in the cavum mediastinale of the thoracic cavity or lodged in the pulmonary parenchyma,and are considered a type of lung bud *** SUMMARY A 49-year-old male patient was admitted to the hospital due to the detection of a retroperitoneal mass during a physical *** weeks before admission,the patient underwent a physical examination and routine laboratory tests,which revealed a space-occupying mass in the retroperitoneal *** patient did not report any symptoms(such as abdominal pain,flatulence,nausea,vomiting,high fever,or chills).The computed tomography(CT)revealed a retroperitoneal spaceoccupying lesion with minimal enhancement and a CT value of approximately 36 Hounsfield *** lesion was not delineated from the boundary of the pancreatic body and was closely related to the retroperitoneum *** Following a series of tests,an abdominal mass was identified,prompting the implementation of a laparoscopic retroperitoneal mass excision *** the investigation,an 8 cm×7 cm cystic round-shaped mass with a distinct demarcation was identified in the upper posterior region of the ***,full resection of the mass was *** pathological examination reveled a cystic mass characterized by a smooth inner *** cystic mass was found to contain a white,viscous liquid within its capsule.

关键词： Bronchogenic cyst Retroperitoneal space Excision Laparoscopic surgery Case report

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

Emerging strategies and developments in oxygen reduction reaction using high-performance platinum-based electrocatalysts

引用

Nano Research 2024年第5期17卷 3516-3532页

作者： asad Ali Aatto Laaksonen Guo Huang Shahid Hussain Shuiping Luo Wen Chen Pei Kang Shen Jinliang Zhu Xiaoyan Ji Energy Engineering Division of Energy ScienceLuleåUniversity of Technology97187 LuleåSweden Department of Materials and Environmental Chemistry Arrhenius LaboratoryStockholm UniversitySE-10691 StockholmSweden Center of Advanced Research in Bionanoconjugates and Biopolymers “Petru Poni”Institute of Macromolecular ChemistryIasi 700469Romania State Key Laboratory of Materials-Oriented and Chemical Engineering Nanjing Tech UniversityNanjing 211816China College of Materials Science and Engineering Shenzhen UniversityShenzhen 518060China School of Resources Environment and MaterialsState Key Laboratory of Processing for Non-ferrous Metal and Featured MaterialsGuangxi UniversityNanning 530004China

The global practical implementation of proton exchange membrane fuel cells(PEMFCs)heavily relies on the advancement of highly effective platinum(Pt)-based electrocatalysts for the oxygen reduction reaction(ORR).To achieve high ORR performance,electrocatalysts with highly accessible reactive surfaces are needed to promote the uncovering of active positions for easy mass *** this critical review,we introduce different approaches for the emerging development of effective ORR electrocatalysts,which offer high activity and *** strategies,including morphological engineering,geometric configuration modification via supporting materials,alloys regulation,core-shell,and confinement engineering of single atom electrocatalysts(SAEs),are discussed in line with the goals and requirements of ORR performance *** review the ongoing development of Pt electrocatalysts based on the syntheses,nanoarchitecture,electrochemical performances,and *** eventually explore the obstacles and research directions on further developing more effective electrocatalysts.

关键词： oxygen reduction reaction(ORR) Pt-based electrocatalysts proton exchange membrane fuel cells(PEMFCs) morphology and alloys strategies single atom electrocatalysts(SAEs)

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

Neurosurgical and pharmacological management of dystonia

引用

World Journal of Psychiatry 2024年第5期14卷 624-634页

作者： Ali Ahmed Mohamed Steven Faragalla asad Khan Garrett Flynn Gersham Rainone Phillip Mitchell Johansen Brandon Lucke-Wold Charles E Schmidt College of Medicine Florida Atlantic UniversityBoca RatonFL 33431United States Department of Neurosurgery and Brain Repair University of South FloridaTampaFL 33606United States Department of Neurosurgery University of FloridaGainesvilleFL 32611United States

Dystonia characterizes a group of neurological movement disorders characterized by abnormal muscle movements,often with repetitive or sustained contraction resulting in abnormal *** types of dystonia present based on the affected body regions and play a prominent role in determining the potential efficacy of a given *** most patients afflicted with these disorders,an exact cause is rarely identified,so treatment mainly focuses on symptomatic *** agents,such as oral anticholinergic administration and botulinum toxin injection,play a major role in the initial treatment of *** more severe and/or refractory cases,focal areas for neurosurgical intervention are identified and targeted to improve quality of *** brain stimulation(DBS)targets these anatomical locations to minimize dystonia *** ablation procedures and peripheral denervation surgeries also offer potential treatment to patients who do not respond to *** management options grant providers and patients the ability to weigh the benefits and risks for each individual patient *** review article explores these pharmacological and neurosurgical management modalities for dystonia,providing a comprehensive assessment of each of their benefits and shortcomings.

关键词： Botulinum toxin Magnetic resonance imaging-guided focused ultrasound Surgical ablation Deep brain stimulation Peripheral denervation surgery Antipsychotics

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：