检索结果-南通市图书馆

Two-dimensional investigation of characteristic parameters and their gradients for the self-generated electric and magnetic fields of laser-induced zirconium plasma

引用

Plasma Science and Technology 2024年第5期26卷 138-155页

作者： Tayyaba SAJID Shazia BAShIR Mahreen akram Maira RAZZAQ Khaliq MAhMOOD Centre for Advanced Studies in Physics Institute of PhysicsGovernment College University LahoreLahore 54000Pakistan Department of Physics Institute of PhysicsGovernment College University LahoreLahore 54000Pakistan

Two-dimensional diagnosis of laser-induced zirconium(Zr)plasma has been experimentally performed using the time-of-flight method by employing Faraday cups in addition to electric and magnetic *** characteristic parameters of laser-induced Zr plasma have been evaluated as a function of different laser irradiances ranging from 4.5 to 11.7 GW cm-2 at different axial positions of 1–4 cm with a fixed radial distance of 2 cm.A well-supporting correlation between the plume parameters and the laser-plasma-produced spontaneous electric and magnetic(E and B)fields was *** measurements of the characteristic parameters and spontaneously induced fields were observed to have an increasing trend with the increasing laser ***,when increasing the spatial distance in both the axial and radial directions,the plasma parameters(electron/ion number density,temperature and kinetic energy)did not show either continuously increasing or decreasing trends due to various kinetic and dynamic processes during the spatial evolution of the ***,the E and B fields were observed to be always diffusing away from the *** radial component of electron number densities remained higher than the axial number density component,whereas the axial ion number density at all laser irradiances and axial distances remained higher than the radial ion number *** higher axial self-generated electric field(SGEF)values than radial SGEF values are correlated with the effective charge-separation mechanism of electrons and *** generation of a self-generated magnetic field is observed dominantly in the radial direction at increasing laser irradiance as compared to the axial one due to the deflection of fast-moving electrons and the persistence of two-electron temperature on the radial axis.

关键词： Faraday cup axial and radial expansion space-charge effect laser-induced zirconium plasma two-electron temperature distribution self-generated electric and magnetic fields

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

AMC Integrated Multilayer Wearable Antenna for Multiband WBAN Applications

引用

Computers, Materials & Continua 2022年第5期71卷 3227-3241页

作者： Iqra Aitbar Nosherwan Shoaib akram Alomainy Abdul Quddious Symeon Nikolaou Muhammad Ali Imran Qammer h.Abbasi Research Institute for Microwave and Millimeter-Wave Studies(RIMMS)National University of Sciences and Technology(NUST) H-1244000IslamabadPakistan School of Electronic Engineering and Computer Science Queen Mary University of LondonLondonE14NSUK KIOS Research and Innovation Center of Excellence University of Cyprus2109NicosiaCyprus Frederick Research Center(FRC)and Department of Electrical Engineering Frederick University1036NicosiaCyprus James Watt School of Engineering University of GlasgowGlasgowG128QQU.K

In this paper,a compact,efficient and easy to fabricate wearable antenna integrated with Artificial Magnetic Conductor(AMC)is *** of slots and bevels/cuts in the rectangular monopole patch antenna yield a wide bandwidth along with band *** proposed antenna is backed with an AMC metasurface that changes the bidirectional radiation pattern to a unidirectional,thus,considerably reducing the Specific Absorption Ratio(SAR).The demonstrated antenna has a good coverage radiating away from the body and presents reduced radiation towards the body with a front-to-back ratio of 13 dB and maximum gain of 3.54 *** proposed design operates over a wide frequency band of 2.9 to 12 Ghz(exceeding the designated 3.1−10.6 Ghz Ultra-Wideband(UWB)band).The band notches were created using slots on the radiating patch in the sub-bands from 5.50 to 5.67 Ghz and 7.16 to 7.74 *** overall dimensions of the structure are 33×33×6.75 *** antenna’s radiation performance increased considerably with the addition of the AMC *** SAR values for the antenna are reduced by 85.3%when the AMC is used and are 0.083 W/kg which is well below the FCC SAR *** simple design,miniaturized profile,low SAR and wide operating bands with multiple band notches make the presented antenna an appealing choice for several UWB wearable body area network(WBAN)applications.

关键词： Ultra-wideband(UWB) monopole antenna wearable antenna specific absorption ratio(SAR)

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

The role of community pharmacists and their perception towards antimicrobial stewardship in Baghdad,Iraq

Health Care Science

引用

health Care Science 2024年第2期3卷 114-123页

作者： akram Alkadhimi Omar T.Dawood Amer h.Khan Discipline of Clinical Pharmacy School of Pharmaceutical SciencesUniversiti Sains MalaysiaPenangMalaysia 2College of PharmacyNinevah UniversityMosulIraq

Background:This study aimed to assess the role of community pharmacists and their perception toward antimicrobial stewardship,in addition to identifying factors influencing their perception and practices in community ***:A cross-sectional study was carried out among community pharmacists regarding antimicrobial *** sampling was used to obtain the required sample from a community pharmacy in *** total,381 participants have completed the ***:The majority of the participants(85.6%)strongly agreed/agreed that“antimicrobial stewardship programs reduce the problems of antibiotic resistance”;and 85.5%of them strongly agreed/agreed that community pharmacists required adequate training on antibiotics *** addition,high percent of community pharmacists(88.4%)strongly agreed/agreed that pharmacists have a responsibility to take a prominent role in antimicrobial stewardship programs and infection-control programs in the health *** total score of perception was significantly influenced by older age groups,postgraduate degrees,and experience of 6–10 years(phis study also showed that 65.4%of pharmacists always/often advise patients to continue the full course of antimicrobials,and 64.9%of them reported always/often considering clinical and safety parameters before dispensing *** role of pharmacists was significantly influenced by the younger age group,females,higher degree in pharmacy,experience of 3–5 years,and medical complex pharmacy(pharmacists have a good perception toward antimicrobial stewardship programs,but their role is still *** efforts are needed to design better strategies for antimicrobial stewardship in community pharmacy.

关键词： antimicrobial stewardship community pharmacists perception

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

Novel applications of bipolar single-valued neutrosophic competition graphs

引用

Applied Mathematics(A Journal of Chinese Universities) 2018年第4期33卷 436-467页

作者： Muhammad akram Maryam Nasir K.P.Shum Department of Mathematics University of the PunjabNew Campus Institute of Mathematics Yunnan University

Bipolar single-valued neutrosophic models are the generalization of bipolar fuzzy models. We first introduce the concept of bipolar single-valued neutrosophic competition graphs. We then, discuss some important propositions related to bipolar single-valued neutrosophic competition graphs. We define bipolar single-valued neutrosophic economic competition graphs and m-step bipolar single-valued neutrosophic economic competition graphs. Further, we describe applications of bipolar single-valued neutrosophic competition graphs in organizational designations and brands competition. Finally, we present our improved methods by algorithms.

关键词： bipolar single-valued neutrosophic digraphs m-step bipolar single-valued neutrosophic economic competition graphs algorithm

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

In vitro anti-plasmodial activity of new synthetic derivatives of 1-(heteroaryl)-2-((5-nitroheteroaryl)methylene) hydrazine

引用

Asian Pacific Journal of Tropical Medicine 2021年第3期14卷 128-138页

作者： Azar Tahghighi akram Abouie Mehrizi Sedigheh Zakeri Malaria and Vector Research Group Biotechnology Research CenterPasteur Institute of IranTehranIran Department of Clinical Research Pasteur Institute of IranTehranIran

Objective:To evaluate new compounds synthesized by integrating quinoline,quinazoline,and acridine rings with the active moiety of(5-nitroheteroaryl)methylene ***:A new series of compounds(1a,1b,2a,2b,3a,and 3b)were synthesized and evaluated for cytotoxicity against COS-7 cells using the MTT *** vitro anti-plasmodial activity of the compounds was measured against CQ-sensitive(3D7)and CQ-resistant(K1)Plasmodium(P.)falciparum strains.β-hematin assay was performed to assess the inhibitory effects ofβ-hematin formation for new ***:The synthetic compounds had anti-plasmodial activity against blood-stage of 3D7[IC50=(0.328-5.483)μM]and K1[IC50=(0.622-7.746)μM]strains of ***,with no cytotoxicity against COS-7 cells in effective *** 1a,1b,and 2b were the most effective derivatives against *** 3D7 and K1 *** on theβ-hematin assay,the inhibition ofβ-hematin formation is the main mechanism of the inhibitory effect of these ***:The synthetic compounds could inhibit the erythrocytic stages of CQ-sensitive and resistant *** strains without toxicity towards mammalian *** 1b,2a,and 2b had comparable anti-plasmodial activity against both CQ-sensitive(3D7)and resistant(K1)*** *** compounds may be promising lead structures for the development of new anti-malarial drugs.

关键词： Plasmodium 5-nitroheteroaryl hydrazine Quinoline Quinazoline Acridine

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

An Effective Memory Analysis for Malware Detection and Classification

引用

Computers, Materials & Continua 2021年第5期67卷 2301-2320页

作者： Rami Sihwail Khairuddin Omar Khairul akram Zainol Ariffin Department of Information Science&Technology Universiti Kebangsaan MalaysiaSelangor43600Malaysia

The study of malware behaviors,over the last years,has received tremendous attention from researchers for the purpose of reducing malware *** of the investigating experiments are performed using either static analysis or behavior ***,recent studies have shown that both analyses are vulnerable to modern malware files that use several techniques to avoid analysis and ***,extracted features could be meaningless and a distraction for malware ***,the volatile memory can expose useful information about malware behaviors and *** addition,memory analysis is capable of detecting unconventional malware,such as in-memory and fileless ***,memory features have not been fully utilized ***,this work aims to present a new malware detection and classification approach that extracts memory-based features from memory images using memory forensic *** extracted features can expose the malware’s real behaviors,such as interacting with the operating system,DLL and process injection,communicating with command and control site,and requesting higher privileges to perform specific *** also applied feature engineering and converted the features to binary vectors before training and testing the *** experiments show that the proposed approach has a high classification accuracy rate of 98.5%and a false positive rate as low as 1.24%using the SVM *** efficiency of the approach has been evaluated by comparing it with other related ***,a new memory-based dataset consisting of 2502 malware files and 966 benign samples forming 8898 features and belonging to six memory types has been created and published online for research purposes.

关键词： Cybersecurity feature selection machine learning malware dataset malware detection memory analysis memory features

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

Exogenously applied glycinebetaine induced alteration in some key physio-biochemical attributes and plant anatomical features in water stressed oat(Avena sativa L.) plants

引用

Journal of Arid Land 2019年第2期11卷 292-305页

作者： Anum ShEhZADI Nudrat A akram Ayaz ALI Muhammad AShRAF Department of Botany Government College University Pakistan Science Foundation Department of Botany King Saud University

Although exogenous application of glycinebetaine(GB) is widely reported to regulate a myriad of physio-biochemical attributes in plants under stressful environments including drought stress, there is little information available in the literature on how and up to what extent GB can induce changes in anatomical features in water starved plants. Thus, the present research work was conducted to assess the GB-induced changes in growth, physio-biochemical, and anatomical characteristics in two cultivars(CK-1 and F-411) of oat(Avena sativa L.) under limited water supply. After exposure to water stress, a considerable reduction was observed in plant growth in terms of lengths and weights of shoot and roots,leaf mesophyll thickness, leaf midrib thickness, root cortex thickness, root diameter, stem diameter, stem phloem area, and stem vascular bundle area in both oat cultivars. however, water stress resulted in a significant increase in leaf total phenolics, hydrogen peroxide(h_2 O_2), ascorbic acid(AsA), GB contents,activities of enzymes(CAT, SOD and POD), total soluble proteins, leaf epidermis(abaxial and adaxial)thickness, bulliform cell area, sclerenchyma thickness, root endodermis and epidermis thickness, root metaxylem area, stem metaxylem area and stem sclerenchyma thickness in both oat ***-applied 100 mM GB suppressed h_2 O_2 contents, while improved growth attributes, free proline and GB contents, activity of SOD enzyme, leaf abaxial epidermis thickness, leaf bulliform cell area, leaf midrib thickness, leaf sclerenchyma thickness, root cortex thickness, root endodermis, epidermis thickness,root stele diameter, stem diameter, stem epidermis thickness, stem metaxylem area, and stem phloem and vascular bundle area in both oat cultivars. For both oat cultivars, CK-1 was superior to F-411 in leaf abaxial epidermis thickness, leaf mesophyll, leaf sclerenchyma, root metaxylem area, stem diameter, stem epidermis, sclerenchyma thickness, stem metaxylem area, and

关键词： drought tolerance anatomical features oat glycinebetaine antioxidants

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

Improving the polarisation and depolarisation current measuring method to avoid ground wire interference

引用

high Voltage 2022年第5期7卷 847-855页

作者： Fan Yang Kai Zhou Shakeel akram Muhammad Tariq Nazir School of Electrical Engineering and Electronic Information Xihua UniversityChengduChina College of Electrical Engineering Sichuan UniversityChengduSichuanChina School of Electrical Engineering and Telecommunications University of New South WalesSydneyNew South WalesAustralia

The ground wire is significantly interfered by the current above 1μA in the industrial field during the traditional polarisation and depolarisation current(PDC)*** paper explains a method to test PDC from high-voltage wire using a principle of equipotential picoammeter,which is completely isolated from the ground wire and connected in series with the high voltage *** this method,a device is designed with a multi-range automatic switching *** device can automatically switch the test range current from 1 pA to 10 mA with a resolution of 1 *** demonstrate the device and effectiveness of this new method,the traditional and the proposed new device are used to test the PDC of cable samples in the laboratory as well as in an industrial *** is worth noting that there is almost no interference on the Earth wire in the laboratory environment but massive interference in the industrial environment using a traditional method of PDC measurement from ground or Earth *** new method of high-voltage testing can efficiently eliminate the interference and accurately measure PDC in a strong industrial interference ***,the wiring of this new method and device is relatively simple,which is convenient for industrial applications.

关键词： ground polar 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

Role of social indicators on vitality parameter to enhance the quality of women＇s communal life within an urban public space （case： Isfahan＇s traditional bazaar, Iran）

引用

Frontiers of Architectural Research 2018年第3期7卷 440-454页

作者： akram Khalili Siyamak Nayyeri Fallah Faculty of Architecture Islamic Azad University Nour Branch Nour 46417-38373 Mazandaran Iran

Vitality is a quality that makes a public space operational and attractive throughout the day in relation to ongoing activities. This parameter can be evaluated through measures such as collective people presence, mixed-use functions, diversity of activities, and other related supportive physical elements. The aim of this research is to evaluate women＇s communal life in terms of vitality measures within public spaces. The commercial setting of Isfahan’s traditional bazaar was selected as the study area. To enhance the credibility of the results, several data collection methods, for example, semi-structured individual interviews （n = 24）, semi-structured focused group interviews （five groups including 28 middle-aged women）, direct observation, snap photography, and unobtrusive behavioral observation of women in communal life within the selected study area, were employed. To analyze the collected data, qualitative content and descriptive analyses were used. Our results indicate that by increasing the vitality of a public space through its related measures, women＇s presence will grow, and through this growth, the quality of their communal life would be enhanced.

关键词： Vitality Communal life Women Urban spaces Traditional Iranian bazaar Qualitative research

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

IOT Based Smart Parking System Using Ensemble Learning

引用

Intelligent Automation & Soft Computing 2023年第6期36卷 3637-3656页

作者： Walaa h.Elashmawi Ahmad akram Mohammed Yasser Menna hisham Manar Mohammed Noha Ihab Ahmed Ali Department of Computer Science Faculty of Computers and InformaticsSuez Canal University4.5 Km the Ring RoadIsmailiaIsmailia41522Egypt Department of Computer Engineering and Software Systems Faculty of EngineeringAin Shams UniversityAl-Abbaseya4543070Egypt Department of Computer Science Faculty of Computer ScienceMisr International University28 KM Cairo–Ismailia RoadCairo44971Egypt College of Computer Engineering and Sciences Prince Sattam Bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia higher Future Institute for Specialized Technological Studies Cairo3044Egypt

Parking space is usually very limited in major cities,especially Cairo,leading to traffic congestion,air pollution,and driver *** car parking systems tend to tackle parking issues in a non-digitized *** systems require the drivers to search for an empty parking space with no guaran-tee of finding any wasting time,resources,and causing unnecessary *** address these issues,this paper proposes a digitized parking system with a proof-of-concept implementation that combines multiple technological concepts into one solution with the advantages of using IoT for real-time tracking of park-ing *** authentication and automated payments are handled using a quick response(QR)code on entry and *** experiments were done on real data collected for six different locations in Cairo via a live popular times *** machine learning models were investigated in order to estimate the occu-pancy rate of certain ***,a clear analysis of the differences in per-formance is illustrated with the final model deployed being *** has achieved the most efficient results with a R^(2) score of 85.7%.

关键词： IoT XGBoost linear regression random forest ensemble learning isolation forest

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：