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新型冠状病毒疫情下护士压力应对资源的概况性综述

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International Journal of Nursing Sciences 2022年第2期9卷 259-267,258页

作者： rahman ashikur Dhaka Medical College Hospital(DMCH) Ministry of Health and Family WelfareDhaka-1000Bangladesh National Institute of Preventive and Social Medicine(NIPSOM) MohakhaliDhaka-1212Bangladesh

目的在应对新型冠状病毒疫情中护士的心理健康问题只是冰山一角。本研究旨在对新型冠状病毒疫情期间和疫情之后适用于护士的心理应对技术和资源进行综述,以维持医疗系统的复原力。方法文献检索范围包括2020年1月至2021年5月发表的文章,... 详细信息

目的在应对新型冠状病毒疫情中护士的心理健康问题只是冰山一角。本研究旨在对新型冠状病毒疫情期间和疫情之后适用于护士的心理应对技术和资源进行综述,以维持医疗系统的复原力。方法文献检索范围包括2020年1月至2021年5月发表的文章,使用Endnote存储和管理。数据综合和审查遵循乔安娜·布里格斯研究所手册和PRISMA-ScR原则。排除多余、无关和不合格的研究,最终纳入13项研究(3613名护士)。结果这些文献中的绝大部分护士为女性且有孩子,主要在重症监护室、急诊室和发热门诊工作。担心家人或同事的安全,以及缺乏安全的工作环境,是发生心理问题的主要原因。另一方面,职业责任感、COVID-19相关培训、工作场所安全、团队精神以及一些放松活动,如深呼吸、读书、看电影和祈祷等,对护士应对压力有益。结论心理健康的护士在面对任何威胁生命的疫情暴发时更具能力和灵活性,即使传染性很强。研究发现,疫情期间的一些应对策略对护士有效,针对特定问题的干预可能效果更好。抗疫战场上的心理健康干预不应滞后,以确保其可行性和有效性,否则整个医疗卫生系统都将受到严重影响。

关键词： COVID-19 医疗卫生人员心理健康护士疾病流行适应,心理学

Aeromonas veronii isolated from climbing perch(Anabas testudineus)suffering from epizootic ulcerative syndrome(EUS)

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Aquaculture and Fisheries 2023年第3期8卷 288-295页

作者： Rakib Ehsan ashikur rahman Sulav Indra Paul Md.Ali Arman Ador Md.Shameul Haque Tasmina Akter Md.Mahbubur rahman Institute of Biotechnology and Genetic Engineering Bangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur1706Bangladesh Department of Fisheries Management Faculty of FisheriesBangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur1706Bangladesh

Motile Aeromonads are responsible for various diseases in fishes that cause significant economic losses in *** *** also frequently isolated from fish suffering from Epizootic Ulcerative Syndrome(EUS).The present study was conducted to isolate and identify *** from Vietnam climbing perch(Anabas testudineus)suffering from EUS,evaluate the pathogenicity of the isolates,and find out antibiogram profile and susceptibility of the isolates to medicinal plant *** climbing perch(***)suffering from EUS was collected from fish farms located at Savar,Dhaka and bacteria were isolated from the external ulcerative lesion,and kidney and liver of the infected fish on nutrient agar *** phenotypic identification of the bacterial isolates was performed following morphological,physiological and biochemical characterization *** 16S rRNA gene sequencing was accomplished for further molecular identification of five selected *** evaluate the pathogenicity of the isolates in vivo artificial infection challenge test was conducted through immersion *** in vivo pathogenicity test was done at three different temperatures(18◦C,28◦C,and 37◦C)to examine the effects of temperature on the pathogenicity of the *** commercial antibiotics were used to find out the antibiogram profile of the ***,susceptibility of the isolates was screened against 19 medicinal plants extracts.A total of 38 out of 46 isolates isolated from Vietnam climbing perch(***)suffering from EUS were phenotypically identified as Aeromonas *** randomly selected isolates were further confirmed as *** by analyzing the 16S rRNA gene sequence *** pathogenicity of the isolates was found moderate to high(41%-80%mortality)in the artificially challenged *** highest and lowest mortality was obtained in the fish challenged with the isolates BFKA33 and BFKA12,*** isolates were found resis

关键词： Aeromonas veronii Anabas testudineus,Epizootic ulcerative syndrome Antibiogram Medicinal plant extracts

基于Faster R-CNN的城市道路目标检测

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电子技术与软件工程 2023年第1期 149-152页

作者： ashikur rahman MOHAMMAD 李军重庆交通大学机电与车辆工程学院重庆市400047

本文针对当前城市道路复杂场景下目标检测精度低下问题,提出了一种多尺度Faster R-CNN模型应用于城市道路目标检测,为提高了特征图卷积后的特征精度,引入了特征金字塔结构,以融合不同尺度特征,以提高检测精度。通过区域建议网络(RPN)解... 详细信息

本文针对当前城市道路复杂场景下目标检测精度低下问题,提出了一种多尺度Faster R-CNN模型应用于城市道路目标检测,为提高了特征图卷积后的特征精度,引入了特征金字塔结构,以融合不同尺度特征,以提高检测精度。通过区域建议网络(RPN)解决了区域对物体或背景的判断,同时利用回归模型对目标框进行修正。在BDD 100K数据集进行实验验证,结果表明本文方法与常见的目标检测方法检测的查准均都高。

关键词： Faster R-CNN 目标检测特征金字塔 RPN

Feasibility and Challenges of 5G Network Deployment in Least Developed Countries (LDC)

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Wireless Sensor Network 2021年第1期13卷 1-16页

作者： ashikur rahman Salsabil Arabi Raqeebir Rab Department of Comp. Sci. & Engg. (CSE) Bangladesh University of Engineering and Technology (BUET) Dhaka Bangladesh Department of Comp. Sci. & Engg. (CSE) Ahsanuallah University of Sci. & Tech. (AUST) Dhaka Bangladesh

Growing client population, ever-increasing service demand, and complexity of services are the driving factors for the mobile operators for a paradigm shift in their core technology and radio access networks. 5G mobile network is the result of this paradigm shift and currently under deployment in many developed countries such as United States, United Kingdom, South Korea, Japan, and China—to name a few. However, most of the Least Developed Countries (LDCs) have very recently been implemented 4G mobile networks for which the overall role out phase is still not complete. In this paper, we investigate how feasible it is for LDCs to emphasize on a possible deployment of 5G networks at the moment. At first, we take a holistic approach to show the major technical challenges LDCs are likely to face while deploying the 5G mobile networks. Then we argue that various security aspects of 5G networks are an ongoing issue and LDCs are not technologically competent to handle many security glitches of 5G networks. At the same time, we show that most of the use cases of 5G networks are not applicable in the context of many LDCs (at least at the present time). Finally, this paper concludes that the start of the 5G network deployment in LDCs would take much longer time than expected.

关键词： 5G Network Least Developed Country 5G Deployment Challenges Security

Ion-acoustic waves with non-planar wavefronts

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Plasma Science and Technology 2024年第1期26卷 1-7页

作者： Shujaht BUKHARI Muhammad SHAHID Ata-ur rahman Department of Physics The University of Azad Jummu and KashmirMuzaffarabad 13100Azad Kashmir Department of Physics Women University of Azad Jammu&KashmirBagh 12500Pakistan Department of Physics Islamia College PeshawerPeshawar 25120Pakistan

The ion-acoustic(IA) mode exhibiting various orbital angular momentum(OAM) states is examined in a plasma with drifting *** constituent plasma species are modeled with a non-gyrotropic Maxwellian distribution and discussion of dispersion relation and growth rate of twisted IA waves under various conditions is *** the domain of kinetic model,the twisted IA waves are characterized by Laguerre-Gaussian(LG) solutions,where plasma distribution function and electric field are decomposed into axial and azimuthal *** plasma response function is obtained under paraxial approximations and investigated for threshold condition of instability growth rate with helical electric field *** impact of an extra electron specie on the instability is demonstrated through a comparison of twisted waves for single and double electron species.

关键词： instability twist parameter wave excitation orbital angular momentum threshold limit

OAM-based diffractive all-optical classification

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Advanced Photonics 2024年第1期6卷 6-7页

作者： Md Sadman Sakib rahman Aydogan Ozcan University of California Electrical and Computer Engineering DepartmentLos AngelesCaliforniaUnited States University of California Bioengineering DepartmentLos AngelesCaliforniaUnited States University of California California NanoSystems Institute(CNSI)Los AngelesCaliforniaUnited States

Object classification is an important aspect of machine *** practices in object classification entail the digitization of object information followed by the application of digital algorithms such as deep neural *** execution of digital neural networks is power-consuming,and the throughput is *** existing von Neumann digital computing paradigm is also less suited for the implementation of highly parallel neural network architectures.^(1)

关键词： consuming digit neural

Effects of multiple shapes for steady flow with transformer oil+Fe_(3)O_(4)+TiO_(2) between two stretchable rotating disks

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Applied Mathematics and Mechanics(English Edition) 2024年第2期45卷 373-388页

作者： M.rahman M.TURKYILMAZOGLU Z.MUSHTAQ Department of Mathematics Mirpur University of Science and TechnologyMirpur 10250Pakistan Department of Mathematics Hacettepe UniversityBeytepeAnkara 06532Turkiye

In this study,we examine the effects of various shapes of nanoparticles in a steady flow of hybrid nanofluids between two stretchable rotating *** steady flow of hybrid nanofluids with transformer oil as the base fluid and Fe_(3)O_(4)+TiO_(2)as the hybrid nanofluid is *** shapes of Fe_(3)O_(4)+TiO_(2)hybrid nanofluids,including sphere,brick,blade,cylinder,and platelet,are *** shape exists in the same volume of a *** leading equations(partial differential equations(PDEs))are transformed to the nonlinear ordinary differential equations(ODEs)with the help of similarity *** system of equations takes the form of ODEs depending on the boundary conditions,whose solutions are computed numerically by the bvp4c MATLAB *** outputs are compared with the previous findings,and an intriguing pattern is discovered,such that the tangential velocity is increased for the rotation parameter,while it is decreased by the stretching values because of the lower *** the reaction rate parameter,the concentration boundary layer becomes shorter,and the activation energy component increases the rate at which mass transfers come to the higher disk but have the opposite effect on the bottom *** ranges of various parameters taken into account are Pr=6.2,Re=2,M=1.0,φ_(1)=φ_(2)=0.03,K=0.5,S=-0.1,Br=0.3,Sc=2.0,α_(1)=0.2,γ=0.1,E_(n)=2.0,and q=1.0,and the rotation factor K is within the range of 0 to 1.

关键词： transformer oil Brinkman number skin friction coefficient double rotating disk Nusselt number Sherwood number

The link between intracellular calcium signaling and exosomal PD-L1 in cancer progression and immunotherapy

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Genes & Diseases 2024年第1期11卷 321-334页

作者： Md Rakibul Alam Md Mizanur rahman Zhiguo Li Department of Toxicology and Cancer Biology College of MedicineUniversity of KentuckyLexingtonKY 40506USA Department of Medicine(Nephrology) Faculty of Medicine and DentistryUniversity of AlbertaEdmontonAlberta T6E2H7Canada

Exosomes are small membrane vesicles containing microRNA,RNA,DNA fragments,and proteins that are transferred from donor cells to recipient *** cells release exo-somes to reprogram the factors associated with the tumor microenvironment(TME)causing tu-mor metastasis and immune *** evidence revealed that cancer cell-derived exosomes carry immune inhibitory molecule program death ligand 1(PD-L1)that binds with re-ceptor program death protein 1(PD-1)and promote tumor progression by escaping immune ***,some FDA-approved monoclonal antibodies are clinicallyused for cancer treatment by blocking PD-1/PD-L1 *** notable treatment outcomes,some pa-tients show poor drug *** PD-L1 plays a vital role in lowering the treatment response,showing resistance to PD-1/PD-L1 blockage therapy through recapitulating the ef-fect of cell surface *** enhance therapeutic response,inhibition of exosomal PD-L1 is *** signaling is the central regulator of tumorigenesis and can regulate exosome biogenesis and secretion by modulating Rab GTPase family and membrane fusion ***-mune checkpoints are also connected with calcium signaling and calcium channel blockers like amlodipine,nifedipine,lercanidipine,diltiazem,and verapamil were also reported to suppress cellular PD-L1 ***,to enhance the PD-1/PD-L1 blockage therapy response,the reduction of exosomal PD-L1 secretion from cancer cells is in our therapeutic *** this review,we proposed a therapeutic strategy by targeting calcium signaling to inhibit the expression of PD-L1-containing exosome levels that could reduce the anti-PD-1/PD-L1 therapy resistance and increase the patient's drug response rate.

关键词： Calcium signaling CD8^(+)T cells Exosomal PD-L1 Exosomes biogenesis Immunosuppression Immunotherapy

Entrepreneurship training:its influences on innovation potentials among nursing students

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Frontiers of Nursing 2024年第1期11卷 85-98页

作者： Asmaa Abdel rahman Abdel rahman Dalia Abdallah Abdelatief Medical Surgical Nursing Department Faculty of NursingAin Shams UniversityCairoEgypt

Objective:To evaluate the influences of entrepreneurship training on the innovation potential among nursing ***:A quasi-experimental design was utilized to conduct this *** study was conducted in the classroom at the faculty of nursing,and the“i Hub”center at Ain Shams University(ASU)in Cairo,Egypt.A purposive sample of 42 nursing students who participated in the“Ain Shams University-innovate”competition from the Faculty of Nursing of ASU were included in this *** collection tools included(1)Nursing students'innovation skills assessment questionnaire and(2)Innovative projects evaluation ***:There was a statistically significant difference between the mean scores of nursing students'total innovation skills pre-and post-implementation of entrepreneurship training,where P-value<***:The results of the current study support the research hypothesis because the implementation of entrepreneurship training positively affects nursing students'innovation *** entrepreneurship education in nursing and integrating it into nursing programs will stimulate creativity,innovation,and entrepreneurship among nursing students and health care services.

关键词： entrepreneurship training innovation potentials nursing students creative skills energy/motivation