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Petroleum 2017年第4期3卷 414-430页

作者： salam Al-Rbeawi Fadhil Kadhim METU-Northern Cyprus Campus Cyprus University of Technology Iraq

The objective of this paper is studying the impact of the hydraulic flow unit and reservoir quality index(RQI)on pressure profile and productivity index of horizontal wells acting in finite *** mathematical models have been developed to investigate this *** models have been built based on the pressure distribution in porous media,depleted by a horizontal well,consist of multi hydraulic flow units and different reservoir quality *** porous media are assumed to be finite rectangular reservoirs having different configurations and the wellbores may have different *** analytical models describing flow regimes have been derived wherein hydraulic flow units and reservoir quality index have been included in addition to rock and fluid *** impact of these two parameters on reservoir performance has also been studied using steady state productivity *** has been found that both pressure responses and flow regimes are highly affected by the existence of multiple hydraulic flow units in the porous media and the change in reservoir quality index for these *** change in the RQI could lead to positive change in both pressure drop required for reservoir fluids to move towards the wellbore and hence the productivity index.

关键词： reservoir reservoirs index

Measuring powder flowability with a modified Warren Spring cohesion tester

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Particuology 2011年第2期9卷 148-154页

作者： salam A.Mohammed Ezzat C.Abdullah Derek Geldart Abdul Aziz A.Raman Department of Chemical Engineering Faculty of EngineeringUniversity of Malaya Powder Research Ltd. Harrogate& University of Leeds

The measurement of powder flowability is a major concern for most industrial processes that deal with the handling of bulk solids as raw materials, intermediates, or products. The development of devices that measure the flowability of non-aerated powders has not progressed as rapidly as might have been hoped since most research activities have been based on various types of shear testers intended to aid the design of hoppers. A new flowability indicator named as weighted cohesion （WS） is established using newly improved version of direct cohesion texture. A cornerstone of the proposed technique is that the procedure is automated, using a digital Warren Spring tester called Warren Spring-University of Malaya cohesion tester （WSUMCT）, thus making results operator-insensitive. Besides being a practical tool to diagnose the cohesion of experimental powders, the ratio between measured cohesion （using WSUMCT） and aerated density （using Hosokawa PT-S） provides us with a powerful technique to research fundamental particle internal cohesion forces directly and use these data to indicate the flowability. In this work, a series of fine （9.4μm） and coarse （60 μm） porous silica gel particle mixtures, and mixtures of fine （28μm） and coarse （72 μm） glass ballotini as well, were used as test powders. The results from these tests agree well with relative flowability determined on our newly driven indicator using WSUMCT. The validation of aerated weighted cohesion （WSA） as a flowability indicator was authenticated by comparing the conducted parameter with established measured Hausner ratio （HR） and angle of repose （AoR）.

关键词： Flowability Cohesion strength Hausner ratio Particle sizeAngle of reposeCohesive powder

Spectral collocation method for solving continuous population models for single and interacting species by means of exponential Chebyshev approximation

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International Journal of Biomathematics 2018年第8期11卷 265-288页

作者： M. A. Ramadan M. A. Abd El salam Mathematics Department Faculty of Science Menoufia University Shebin El-KomEgypt Mathematics Department Faculty of Science Al-Azhar University Nasr-City Cairo Egypt

In this paper, an efficient and accurate method is presented to solve continuous population models for single and interacting species using spectral collocation method with exponential Chebyshev (EC) functions. The first problem is a logistic growth model in a population, while the second problem is a prey-predator model: Lotka-Volterra system, the tbird is a simple 2-species Lotka-Volterra competition model, and the final one is a prey-predator model with limit cycle periodic behavior. The high accuracy of this method is verified through some numerical examples. The obtained numerical results are compared with other methods, showing that the proposed method gives higher accuracy.

关键词： Exponential Chebyshev functions continuous population models spectral collocation method

Use of wireless system in healthcare for developing countries

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Digital Communications and Networks 2016年第1期2卷 34-45页

作者： Humaira Abdus salam Bilal Muhammad Khan National University of Sciences and Technology NUST Islamabad Pakistan

Healthcare is one of the major applications of wireless systems that possess crucial issues. Specifically developing countries require a low cost and reliable network with efficient protocols. The most challenging concern of Body Area Network (BAN) is heterogeneity, which requires fairness with reliability among all the network nodes. Solutions proposed for these networks either do not provide fair packet transmission or consume high energy and introduce delays. In this paper, we propose a cross layer protocol for healthcare applications meeting the requirements and challenges of the heterogeneous BAN. The protocol is also feasible for developing countries as it can be implemented over existing wireless infrastructure and provides high network reliability with energy efficiency through cooperation and adaptability. Results show that the proposed scheme improves reliability, throughput, Packet Delivery Ratio (PDR), and energy consumption for scalable and mobile networks over conventional BAN protocols.

关键词： Cooperative AODV (Ad-hoc On-demand Distance Vector) routing Cross layer adaptability Data aggregation Heterogeneous network Wireless BAN communication

Egg-derived tyrosine phosphatase as a Potential Biomarker for Muscle Ageing and Degeneration in Drosophila melanogaster

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Journal of Genetics and Genomics 2014年第4期41卷 221-224页

作者： salam Herojeet Singh Nallur B.Ramachandra Upendra Nongthomba Molecular Reproduction Development and GeneticsIndian Institute of Science Department of Studies in Zoology University of MysoreManasagangotri

Ageing is associated with declined activity of behaviors, physiology and metabolic processes （Arking, 2006）. In- vestigations in model organisms have indicated the exis- tence of ＂functional senescence＂, the progressive decline of biological functions with age and the decline in the activity may vary from tissue to tissue. Consequently, studies per- taining to the key organs/tissues whose functions deterio- rate/fail with age have led to the development of tissue specific ageing biomarkers （Grotewiel et al., 2005; Demontis et al., 2013）.

关键词： Egg-derived tyrosine phosphatase as a Potential Biomarker for Muscle Ageing and Degeneration in Drosophila melanogaster gene

Soil resistivity and ground resistance for dry and wet soil

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Journal of Modern Power Systems and Clean Energy 2017年第2期5卷 290-297页

作者： Md.Abdus salam Quazi Mehbubar RAHMAN Swee Peng ANG Fushuan WEN Department of Electrical and Electronic Engineering Faculty of EngineeringUniversiti Teknologi BruneiJalan Tungku LinkBandar Seri BegawanBrunei-Muara BE1410Brunei Darussalam Department of Electrical and Computer Engineering The University of Western OntarioLondonOntario N6A 5B9Canada

In this paper, soil resistivity and ground resistance at two different sites near an electrical substation are measured using a grounding system grid with and without rods. With the Wenner four-pole equal-method, the soil resistivity is measured at both selected sites, one of which contains wet soil while the other contains dry soil. Cymgrd simulation software is then used to determine the acceptability of these measured resistivity values by finding out the root mean square error between the measured and calculated values for both wet and dry soil sites. These values for wet and dry soil sties were found to be only 0 %and 4.92 %, respectively, and deemed acceptable. The measured soil resistivity values were then used to evaluate the ground resistance values of a grounding grid ‘with rod’for the wet soil site and ‘without rods’ for the dry soil site,and then compared with the simulated ground resistance values. These comparisons were also found to be in good agreement. In addition, ground potential rise, maximum permissible step and touch potentials have also been estimated using the simulation software.

关键词： Grid with rods Grid without rods Fall-ofpotential method Soil resistivity Ground resistance

Impact of community-based interventions for the prevention and control of malaria on intervention coverage and health outcomes for the prevention and control of malaria

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Infectious Diseases of Poverty 2014年第1期3卷 235-249页

作者： Rehana A salam Jai K Das Zohra S Lassi Zulfiqar A Bhutta Division of Women and Child Health The Aga Khan UniversityKarachiPakistan Center of Excellence in Women&Child Health The Aga Khan UniversityKarachiPakistan Center for Global Child Health Hospital for Sick Children TorontoCanada

In this paper,we aim to evaluate the effectiveness of community-based interventions(CBIs)for the prevention and management of *** conducted a systematic review and identified 42 studies for ***-five of the included studies evaluated the impact of the community-based distribution of insecticide-treated nets(ITNs),indoor residual spraying(IRS),or impregnated bed sheets;14 studies evaluated intermittent preventive therapy(IPT)delivered in community settings;two studies focused on community-based education for malaria prevention;and one study evaluated environmental management through drain *** analysis suggests that,overall,the community-based delivery of interventions to prevent and control malaria resulted in a significant increase in ITNs ownership(RR:2.16,95%CI:1.86,2.52)and usage(RR:1.77,95%CI:1.48,2.11).However,usage of ITNs was limited to two-thirds of the population who owned ***-based strategies also led to a significant decrease in parasitemia(RR:0.56,95%CI:0.42,0.74),malaria prevalence(RR:0.46,95%CI:0.29,0.73),malaria incidence(RR:0.70,95%CI:0.54,0.90),and anemia prevalence(RR:0.79,95%CI:0.64,0.97).We found a non-significant impact on splenomegaly,birth outcomes(low birth weight,prematurity,stillbirth/miscarriage),anthropometric measures(stunting,wasting,and underweight),and mortality(all-cause and malaria-specific).The subgroup analysis suggested that community-based distribution of ITNs,impregnated bed sheets and IRS,and IPT are effective *** synthesis suggests that high coverage could be achieved at a lower cost with the integration of CBIs with existing antenatal care and immunization ***-based delivery of interventions to prevent and control malaria are effective strategies to improve coverage and access and reduce malaria burden,however,efforts should also be concerted to prevent over diagnosis and drug resistance.

关键词： Malaria Community-based interventions Malarial control Malaria treatment

Sources of Nitrogen in Combination with Systems of Irrigation Influence the Productivity of Modern Rice(Oryza sativa L.)Cultivars during Dry Season in Sub-Tropical Environment

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Phyton-International Journal of Experimental Botany 2022年第8期91卷 1687-1708页

作者： Uttam Kumer Sarker Md.Romij Uddin Ahmed Khairul Hasan Md.Abdur Rahman Sarkar Md.Abdus salam Md.Alamgir Hossain Eldessoky S.Dessoky Ismail A.Ismail Department of Agronomy Bangladesh Agricultural UniversityMymensingh2202Bangladesh Department of Crop Botany Bangladesh Agricultural UniversityMymensingh2202Bangladesh Department of Biology College of ScienceTaif UniversityTaif21944Saudi Arabia

In irrigated agricultural systems,nitrogen(N)and water are the vital resources for sustainability of the crop production in the modern era of climate *** current study aimed to assess the impact of water and N management on the productivity of irrigated rice *** the context,a field observation was done at the research farm of Bangladesh Agricultural University,Mymensingh,during dry seasons in consecutive two years(2018–2019 and 2019–2020).The experiments were set up following split-plot design assigning water management in the main plots,nitrogen management in the sub-plots,and the cultivars were approved in the split-split plot with three *** two years observation,it was revealed that rice cultivar Binadhan-8 gave the maximum value of leaf area index,number effective tillers hill-1 and grains panicle-1 which lead to the higher grain yield(GY).Substantial relationships were observed among the concentration of N,growth,total dry matter(TDM)and N content,N uptake,N utilization effectiveness,and ***,with little exception,the Combined effect of water and N,cultivars and water management were varied significantly for all ***,the results of the current study concluded that application of irrigation at 8 days after the disappearance of ponded water and source of 105 kg N ha-1 from PU+Poultry manure are the best management approach for the excellent performance of rice cultivar Binadhan-8.

关键词： Growth stage high yielding rice cultivar internal N use efficiency water productivity

The conceptual framework and assessment methodology for the systematic reviews of community-based interventions for the prevention and control of infectious diseases of poverty

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Infectious Diseases of Poverty 2014年第1期3卷 199-205页

作者： Zohra S Lassi Rehana A salam Jai K Das Zulfiqar A Bhutta Division of Women and Child Health The Aga Khan UniversityKarachiPakistan Center of Excellence in Women&Child Health The Aga Khan UniversityKarachiPakistan Center for Global Child Health Hospital for Sick Children TorontoCanada

This paper describes the conceptual framework and the methodology used to guide the systematic reviews of community-based interventions(CBIs)for the prevention and control of infectious diseases of poverty(IDoP).We adapted the conceptual framework from the 3ie work on the‘Community-Based Intervention Packages for Preventing Maternal Morbidity and Mortality and Improving Neonatal Outcomes’to aid in the analyzing of the existing CBIs for *** conceptual framework revolves around objectives,inputs,processes,outputs,outcomes,and impacts showing the theoretical linkages between the delivery of the interventions targeting these diseases through various community delivery platforms and the consequent health *** also describe the methodology undertaken to conduct the systematic reviews and the meta-analyses.

关键词： IDoPs Conceptual framework Prevention and control Community platforms CHWs

Some Geometric Invariants of Pseudo-Spherical Evolutes in the Hyperbolic 3-Space

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Computers, Materials & Continua 2018年第12期57卷 389-415页

作者： H.S.Abdel-Aziz M.Khalifa Saad A.A.Abdel-salam Mathematics Department Faculty of ScienceSohag University82524SohagEgypt Mathematics Department Faculty of ScienceIslamic University of Madinah170 El-MadinahKSA

In this paper,we study the pseudo-spherical evolutes of curves in three dimensional hyperbolic *** use techniques from singularity theory to investigate the singularities of pseudo-spherical evolutes and establish some relationships between singularities of these curves and geometric invariants of curves under the action of the Lorentz ***,we defray with illustration some computational examples in support our main results.

关键词： Pseudo-spherical evolutes evolute curves hyperbolic 3-space