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malaria stratification in a malarious area,a field exercise

Asian Pacific Journal of Tropical medicine 2010年第10期3卷 807-811页

作者： Vatandoost Hassan Akbarzadeh Kamran Hanafi- Bojd Ahniad Ali mashayekhi minoo Saffari mohammad malik elfatih m Kenyi Luka Abakar John Baptist Busaq Alikhan Esmailpour mohammad Hassen Abuelgasim Oshaghi mohamad Ali Department of medical Entomology & Vector Control School of Public Health & National Institute of Health ResearchTehran University of Medical Sciences Kerman University of medical Sciences PHC and Preventive medicine ministry of Health Baghlan province Urmieh University of medical Sciences Northern State ministry of Health Malaria Control Programme

Objective:To conducted a spatial analysis for stratification of priority malaria control areas in Kahnuj County,as part of field ***:Information of Health Centers of Kahnuj County has been used for stratification retrospectively.A knowledge,attitudes and practices(KAP) study was arranged to provide preliminary information about the knowledge,attitude and practice related to malaria in the ***:Numbers of malaria cases has been decreased in year *** were five important vectors of malaria in this region including:Anopheles stephensi (***),Anopheles dthali(***).Anopheles superpictus(***),Anophels culicifacies(***),and Anopheles Jluviatilis(***),but majority of malaria cases in this county was related to Plasmodium vivax(***).Educational levels of community were 38% ,20% ,10% and 32% for illiterate,primary,secondary and university levels,respectively. KAP study revealed that about 37% of people have got malaria at least once and only 27% of people knew that mosquito is the vector of ***:malaria in Kahnuj represents a real *** occurs in city *** can be suspected for the first peak of malaria cases in late spring in Kahnuj *** has a relatively high density in autumn while two malaria cases due to *** were reported in *** on KAP study,the knowledge of respondents seems good but the attitude and practice is *** to the data such as API,main malaria vector,transmission rate,and foreign migrants,the Kahnuj County has been spatially divided into three strata based on various *** authorities should implement all the interventions based on stratification.

关键词： malaria Kahnuj Stratification Iran

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Intestinal protozoa and intestinal helminthic infections among schoolchildren in Central Sudan

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Asian Pacific Journal of Tropical medicine 2010年第4期3卷 292-293页

作者： Abdel-aziz m.Ahmed Azam A.Afifi elfatih m.malik Ishag Adam University of Khartoum Sudan Preventive medicine Federal Ministry of HealthSudan

Objective:To determine the prevalence of intestinal parasitic infections and soil-transmitted helminths(STHs) among primary schoolchildren in El dhayga,Central ***:In this cross-sectional study,three fresh faecal samples were collected from each child,which were examined by direct wet mount,brine flotation,formalin-ether and Kato-Katz *** intensity of each STH infection was expressed as the mean of eggs per gram counts of the three ***:In total,142(90.4%) of 157 children harboured at least one type of intestinal *** lumbricoides,Hymenolepis nana,Entamoeba histolytica and Giardia lamblia were the most common parasites found,with prevalence rates of 32.5%,30.6%,33.1%and 19.7%,*** of these 157 children,29(18.5%) harboured more than two intestinal parasitic *** cases of Schistosoma mansoni or Enterobius vermicularis were identified. Conclusions:The study demonstrates significant burden of intestinal protozoa and STH infections in this part of Sudan and highlights the need for preventive and intervention measures.

关键词： Schoolchildern Helminthes Intestinal Protozoa Sudan

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Critical Technical Awakenings

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Journal of Social Computing 2021年第4期2卷 365-384页

作者： maya malik momin m.malik the School of Social Work McGill UniversityMontréalH3A 0G4Canada the Institute in Critical Quantitative Computational&Mixed MethodologiesJohns Hopkins UniversityBaltimoreMD 21218USA

Starting with Philip ***’s 1997 essay on“critical technical practice”,we consider examples of writings from computer science where authors describe“waking up”from a previously narrow technical approach to the world,enabling them to recognize how their previous efforts towards social change had been *** use these examples first to talk about the underlying assumptions of a technology-centric approach to social problems,and second to theorize these awakenings in terms of Paulo Freire’s idea of critical ***,understanding these awakenings among technical practitioners as examples of this more general phenomenon gives guidance for how we might encourage and guide critical awakenings in order to get more technologists working effectively towards positive social change.

关键词： critical technical practice critical consciousness perspective transformation education machine learning

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A Double Threshold Energy Detection-Based Neural Network for Cognitive Radio Networks

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Computer Systems Science & Engineering 2023年第4期45卷 329-342页

作者： Nada m.elfatih Elmustafa Sayed Ali maha Abdelhaq Raed Alsaqour Rashid A.Saeed Department of Electrical and Electronics Engineering Red Sea UniversityPort Sudan33311Sudan Department of Information Technology College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityRiyadh11671Saudi Arabia Department of Information Technology College of Computing and InformaticsSaudi Electronic UniversityRiyadh93499Saudi Arabia Department of Computer Engineering College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia Department of Electronics Engineering Sudan University of Science and TechnologyKhartoum11111Sudan

In cognitive radio networks(CoR),the performance of cooperative spectrum sensing is improved by reducing the overall error rate or maximizing the detection *** optimization methods are usually used to optimize the number of user-chosen for cooperation and the threshold ***,these methods do not take into account the effect of sample size and its effect on improving CoR *** general,a large sample size results in more reliable detection,but takes longer sensing time and increases ***,the locally sensed sample size is an optimization ***,optimizing the local sample size for each cognitive user helps to improve CoR *** this study,two new methods are proposed to find the optimum sample size to achieve objective-based improved(single/double)threshold energy detection,these methods are the optimum sample size N^(*)and neural networks(NN)*** the evaluation,it was found that the proposed methods outperform the traditional sample size selection in terms of the total error rate,detection probability,and throughput.

关键词： Cognitive radio spectrum sensing energy detection double threshold neural network machine learning optimization quality of service

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Behavior of Anisotropic Compact Stars in f(R,∅) Gravity

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Communications in Theoretical Physics 2019年第5期71卷 599-609页

作者： m.Farasat Shamir Adnan malik Department of Sciences and Humanities National University of Computer and Emerging Sciences

The aim of this paper is to investigate modified f(R, ?) theory of gravity, where R and ? represent the Ricci scalar and scalar potential respectively. Specifically, we take the spherically symmetric spacetime to discuss the possible emergence of compact stars. We study the physical behavior of compact stars by considering 4 U 1820-30, SAX J1808-3658 and Her X1, which are three popular models of compact stars. The graphical analysis of energy density, radial pressure, tangential pressure, energy conditions as well as stability of compact stars has been shown. It is concluded that behavior of these three stars is usual for f(R, ?) gravity models with some specific choices of model parameters.

关键词： f(R,∅) gravity spherically symmetric spacetime compact stars Klein-Gordon equation

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Exact solutions of mHD second Stokes flow of generalized Burgers fluid

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Applied mathematics and mechanics(English Edition) 2015年第2期36卷 211-224页

作者： m.KHAN R.malik A.ANJUm Department of mathematics Quaid-i-Azam University

This work concerns with the exact solutions of magnetohydrodynamic（mHD）flow of generalized Burgers fluid describing the second Stokes problem. The modified Darcy law is taken into account. The related velocity distribution and shear stress are expressed as a combination of steady-state and transient solutions computed by means of integral transformations. The effects of various parameters on the flow field are investigated. The mHD flow results in reduction of velocity distribution and associated thickness of the boundary layer.

关键词： generalized Burgers fluid magnetohydrodynamic(mHD) flow porous medium exact solution

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Interaction of antipsychotic drug with novel surfactants: micellization and binding studies

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Chinese Journal of Chemical Engineering 2018年第3期26卷 566-573页

作者： Naved Azum malik Abdul Rub Abdullah m.Asiri Center of Excellence for Advanced materials Research King Abdulaziz University Chemistry Department Faculty of Science King Abdulaziz University

The interaction of cationic gemini surfactants(alkanediyl-α,ω-bis(alkyl dimethylammonium bromide)) with an antipsychotic drug(chlorpromazine hydrochloride(CPZ)) has been investigated. Various micellar and interfacial parameters have been deliberated by surface tension measurement to report the nature of interactions between drug and novel surfactant mixtures. The behavior of mixed systems, their compositions and activities of components have been analyzed in the light of Rubingh's theory. The results indicate synergism in the binary *** binding study between CPZ and surfactants has been done by spectroscopic techniques such as UV–visible and fluorescence. The results are discussed in the light of the use of gemini surfactants as promising drug delivery agents for phenothiazine drugs, and hence, improve their bioavailability.

关键词： Gemini surfactants Antipsychotic drug Chlorpromazine hydrochloride mixed micellization

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Peristaltic Flow of Shear Thinning Fluid via Temperature-Dependent Viscosity and Thermal Conductivity

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Communications in Theoretical Physics 2019年第4期71卷 367-376页

作者： S.Noreen A.malik m.m.Rashidi Department of mathematics COMSATS University Islamabad Shanghai Automotive Wind Tunnel Center Tongji University

In this paper Williamson ?uid is taken into account to study its peristaltic ?ow with heat effects. The study is carried out in a wave frame of reference for symmetric channel. Analysis of heat transfer is accomplished by accounting the effects of non-constant thermal conductivity and viscosity and viscous dissipation. modeling of fundamental equations is followed by the construction of closed form solutions for pressure gradient, stream function and temperature while assuming Reynold's number to be very low and wavelength to be very long. Double perturbation technique is employed, considering Weissenberg number and variable ?uid property parameter to be very small. The effects of emerging parameters on pumping, trapping, axial pressure gradient, heat transfer coe?cient, pressure rise,velocity pro?le and temperature are analyzed through the graphical representation. A direct relation is observed between temperature and thermal conductivity whereas the indirect proportionality with viscosity. The heat transfer coe?cient is lower for a ?uid with variable thermal conductivity and variable viscosity as compared to the ?uid with constant thermal conductivity and constant viscosity.

关键词： temperature-dependent viscosity temperature-dependent thermal conductivity shear thinningfluid peristalsis

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Numerical Analysis of Unsteady magneto-Biphase Williamson Fluid Flow with Time Dependent magnetic Field

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Communications in Theoretical Physics 2019年第2期71卷 143-151页

作者： madiha Bibi m.Y.malik A.Zeeshan Department of mathematics College of Sciences P.O.Box 9004 King Khalid University Department of mathematics Quaid-I-Azam University Department of mathematics and Statistics Faculty of Basic and Applied Sciences International Islamic University

Numerical investigation of the dusty Williamson fluid with the dependency of time has been done in current disquisition. The flow of multiphase liquid/particle suspension saturating the medium is caused by stretching of porous surface. The influence of magnetic field and heat generation/absorption is observed. It is assumed that particle has a spherical shape and distributed uniformly in fluid matrix. The unsteady two-dimensional problems are modeled for both fluid and particle phase using conservation of mass, momentum and heat transfer. The finalized model generates the non-dimensioned parameters, namely Weissenberg number, unsteadiness parameter, magnetic parameter,heat generation/absorption parameter, Prandtl number, fluid particle interaction parameter, and mass concentration parameters. The numerical solution is obtained. Locality of skin friction and Nusselt number is deliberately focused to help of tables and graphs. While inferencing the current article it is clearly observed that increment of Williamson parameter, unsteadiness parameter, magnetic parameter, volume fraction parameter, and mass concentration parameter reduces the velocity profile of fluid and solid particles as well. And increment of Prandtl number, unsteadiness parameter,volume fraction parameter, and mass concentration parameter reduces the temperature profile of fluid and solid particles as well.

关键词： unsteady flow multiphase Williamson fluid variable magnetic field permeable wall heat source/sink

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Comprehensive analysis of relativistic embedded class-I exponential compact spheres in f(R,φ)gravity via Karmarkar condition

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Communications in Theoretical Physics 2023年第10期75卷 100-110页

作者： Zoya Asghar Adnan malik m Farasat Shamir Fatemah mofarreh National University of Computer and Emerging Sciences Lahore CampusPakistan School of mathematical Sciences Zhejiang Normal UniversityJinhuaZhejiangChina Department of mathematics University of Management and TechnologySialkot CampusPakistan mathematical Science Department Faculty of Science Princess Nourah bint Abdulrahman University Riyadh 11546Saudi Arabia

In this article,we use the prominent Karmarkar condition to investigate some novel features of astronomical objects in the f(R,φ)gravity;R andφrepresent the Ricci curvature and the scalar field,*** is worth noting that we classify the exclusive set of modified field equations using the exponential type model of the f(R,φ)theory of gravity f(R,φ)=φ(R+α(eβR-1)).We show the embedded class-I approach via a static,spherically symmetric spacetime with an anisotropic *** accomplish our objective,we use a particular interpretation of metric potential(grr)that has already been given in the literature and then presume the Karmarkar condition to derive the second metric *** employ distinct compact stars to determine the values of unknown parameters emerging in metric *** ensure the viability and consistency of our exponential model,we execute distinct physical evolutions,*** graphical structure of energy density and pressure evolution,mass function,adiabatic index,stability,equilibrium,and energy *** investigation reveals that the observed anisotropic findings are physically appropriate and have the highest level of precision.

关键词： stellar structures metric potentials f(R,φ)theory of gravity Karmarkar condition

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