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Asian Pacific Journal of Tropical Biomedicine 2012年第1期2卷 61-65页

作者： Tan Zi Ning Wong Weng Kin Shaymoli Mustafa Arefuddin ahmed Rahmah Noordin Tan Gim Cheong Olivos-Garcia alfonso Lim Boon Huat School of Health Sciences Universiti Sains Malaysia Institute for Research in Molecular Medicine Universiti Sains Malaysia Department of Medical Microbiology ParasitologySchool of Medical SciencesUniversiti Sains Malaysia Departamento de Medicina Experimental Facultad de Medicina.Universidad National Autonoma de Mexico

Objective:To compare the efficacy of three different tissue stains,namely haematoxylin and eosin(H&E),periodic-acid Schiff(PAS)and immunohistochemical(1HC)stains for detection of Entamoeba histolytica(***)trophozoites in abscessed liver tissues of ***:Amoebic liver abscess was experimentally induced in a hamster by injecting 1×10~6of axenically cultured virulent *** trophozoites(HM1-IMSS strain)into the portal *** a week post-inoculation,the hamster was sacrificed and the liver tissue sections were stained with H&E,PAS and IHC stains to delect the amoebic ***:The three stains revealed tissue necrosis and amoebic trophozoites,but with varying clarity.H&E and PAS stained the trophozoites pink and magenta,respectively,however it was difficult to differentiate the stained trophozoites from the macrophages because of their similarity in size and *** the other hand,IHC stain revealed distinct brown appearance of the trophozoites in the infected liver ***:It can be concluded that out of the three *** is the best for identification of *** trophozoites in tissue sections.

关键词： Entamoeba histolytica Amoebic liver abscess H&E PAS IHC Trophozoite

Ougenioxylon chinjiensis sp. nov., a New Fossil Species of the Family Leguminosae from Chinji Formation Salt Range, Punjab Pakistan

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American Journal of Plant Sciences 2014年第26期5卷 3745-3751页

作者： Noor-Ul-Ain Soomro Basir ahmed Arain Muhammad Tahir Mehmood Rajput Institute of Plant Sciences University of Sindh Jamshoro Pakistan

This work is comprised of anatomical study of fossil wood collected from Chnji formation (72°22'E, 32°41'N) of Miocene age exposed at Chinji National Reservoir. The material consists of a single piece of petrified wood dark brown in colour. The three dimensional sections were prepared by ground thin section technique. Microscopic examination of the characters was compared with modern and fossil wood and found comparable with the family Leguminosae. The closest resemblance of our fossil wood is with the wood of Ougenia. This fossil wood shows close resemblance in respect of vessels, fibers, parenchyma and xylem rays character. Therefore it is considered as new species and it is named Ougenioxylon chienjiensis sp. nov. The specific epithet refers to Chinji formation to which fossil wood belongs.

关键词： Ougenia chinjiensis Fossil Wood Salt Range Punjab Pakistan

Two and Three Dimensions of Generalized Thermoelastic Medium without Energy Dissipation under the Effect of Rotation

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Applied Mathematics 2015年第5期6卷 793-805页

作者： MohamedI A. Othman Sarhan Y. Atwa ahmed W. Elwan Department of Mathematics Faculty of Science ZagazigUniversity Zagazig Egypt Department of Mathematics Faculty of Science Taif University Taif City Saudi Arabia Department of Mathematics Faculty of Science Taif University Taif City Saudi Arabia Department of Mathematics Faculty of Science King Khalid University Abha Saudi Arabia

The purpose of this paper is to study the effect of rotation on the general three-dimensional model of the equations of the generalized thermoelasticity for a homogeneous isotropic elastic half-space solid. The problem is studied in the context of the Green-Naghdi theory of type II (without energy dissipation). The normal mode analysis is used to obtain the expressions for the temperature, thermal stress, strain and displacement. The distributions of variables considered are represented graphically.

关键词： Generalized Thermoelasticity Three-Dimensional Modeling Rotation Normal Mode Method Green-Naghdi Theory

Rice melatonin deficiency causes premature leaf senescence via DNA methylation regulation

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Experimental Investigation of a Hydraulic Turbine for Hydrokinetic Power Generation in Irrigation/Rainfall Channels

The Crop Journal 2024年第3期 721页

作者： Yue Lu ahmed Gharib Rujia Chen Hanyao Wang Tianyun Tao Zhihao Zuo Qing Bu Yanze Su Yaoqing Li Yanmo Luo Hamdi F.El-Mowafi Zhichao Wang Qianfeng Huang Shuting Wang Yang Xu Pengcheng Li Chenwu Xu Zefeng Yang

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Journal of Marine Science and Application 2021年第1期20卷 144-155页

作者： aly Hassan Abdelbaky Elbatran Omar B.Yaakob Yasser M.ahmed Faculty of Engineering Arab Academy for Science and Technology and Maritime TransportAlexandria 1029Egypt Faculty of Mechanical Engineering Universiti Teknologi Malaysia81310 SkudaiJohorMalaysia Marine Technology Center Universiti Teknologi Malaysia81310 SkudaiJohorMalaysia Department of Naval Architecture and Marine Engineering Faculty of EngineeringAlexandria UniversityAlexandriaEgypt

The development of microchannels with open flow for use in irrigation and rainy areas is challenged by electricity generation via hydrokinetic devices in shallow and low velocity *** hydrokinetic turbines are known to be highly dependent on current speed and water *** drawback of conventional turbines is their low *** shortcomings lead to the need to accelerate the flow in the channel system to enhance the extracted *** method of deploying a novel turbine configuration in irrigation channels can help overcome the low performance of conventional hydrokinetic ***,this study experimentally presents a bidirectional diffuser-augmented channel that includes dual cross flow/Banki *** show that the maximum efficiency of the overall system with two turbines is nearly 55.7%.The efficiency is low relative to that of hydraulic ***,the result can be considered satisfactory given the low head of the present *** use of this system will contribute to a highly efficient utilization of flows in rivers and channels for electrical energy generation in rural areas.

关键词： Irrigation channels Cross flow turbine(CFT) Bidirectional diffuser-augmented(BDA) Tidal current Flow characteristics Efficiency

Electrical Performance Study of a Large Area Multicrystalline Silicon Solar Cell Using a Current Shunt and a Micropotentiometer

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Engineering（科研） 2010年第4期2卷 263-269页

作者： Hala Mohamed Abdel Mageed ahmed Faheem Zobaa ahmed Ghitas Mohamed Helmy Abdel Raouf Mohamed Sabry Abla Hosni Abd El-Rahman Mohamed Mamdouh Abdel Aziz 不详

In this paper, a new technique using a Current Shunt and a Micropotentiometer has been used to study the electrical performance of a large area multicrystalline silicon solar cell at outdoor conditions. The electrical performance is mainly described by measuring both cell short circuit current and open circuit voltage. The measurements of this cell by using multimeters suffer from some problems because the cell has high current intensity with low output voltage. So, the solar cell short circuit current values are obtained by measuring the voltage developed across a known resistance Current Shunt. Samples of the obtained current values are accurately calibrated by using a Micropotentiometer (μpot) thermal element (TE) to validate this new measuring technique. Moreover, the solar cell open circuit voltage has been measured. Besides, the cell output power has been calculated and can be correlated with the measured incident radiation.

关键词： Large Area Multicrystalline Silicon Solar Cell Current Measurements Calibration Current Shunt Micropotentiometer Short Circuit Current Open Circuit Voltage

Molecular docking of amphetamine,cathine and cathinone with dihydrofolate reductase:a computational analysis of inhibition of dihydrofolate reductase by khat alkaloids

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Toxicology Communications 2022年第2期4卷 23-28页

作者： Siddig Ibrahim Abdelwahab abdullah Farasani ahmed Jerah Manal Mohamed Elhassan Taha Anil Bidwai Medical Research Centre Jazan UniversityJazan 45142Saudi Arabia College of Applied Medical Sciences Jazan UniversityJazan 45142Kingdom of Saudi Arabia Substance Abuse Research Center Jazan UniversityJazan 45142Saudi Arabia

Interaction of amphetamine,cathine and cathinone with the enzyme dihydrofolate reductase was studied by molecular docking using AutoDock 4.2 as the docking software *** 4.2 software serves as a valid and acceptable docking application to study the interactions of small compounds with *** of amphetamine,cathine and cathinone with dihydrofolate reductase were compared to those of methotrexate,a known inhibitor of the *** calculated free energy of binding(ΔG binding)shows that the three ligands(ΔG=-6.87 to-7.21 kcal/mol;Ki=9.15 to 5.18μM)bind with affinity slightly lower than methotrexate(ΔG=-8.78 kcal/mol;Ki=363 nM).Binding interactions of the three ligands with active site residues of the enzyme are also *** the ligands appear to bind in a similar conformation making extensive VDW contacts in the active site of the *** bonding and pi-pi interaction with key active site residues is also ***,a probable inhibition of dihydrofolate reductase by khat alkaloids can be explained on the basis of this in silico binding and khat alkaloids can be considered as potential lead compounds in the development of new inhibitors of dihydrofolate reductase which is a potential target of anti-cancer *** results of these studies can serve as a starting point for further computational and experimental studies.

关键词： amphetamine cathine cathinone methotrexate docking AutoDock DHFR khat alkaloids

巴基斯坦海德拉巴地区连续性斜视17例手术治疗临床观察(英文)

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国际眼科杂志 2009年第12期9卷 2265-2268页

作者： Sameen Afzal Junejo Munawar ahmed Arshad ali Lodhi Liaquat大学医学院眼科医院

目的:观察接受斜视手术的连续性斜视患者的临床过程和治疗效果。方法:连续性斜视患者(<45岁)分为两组:其中第1组为内斜视患者;第2组为外斜视患者。我们使用棱镜屈光度(PD)来测量患者的偏斜角,对第一次手术后的患者在随访期间(6mo内)进... 详细信息

目的:观察接受斜视手术的连续性斜视患者的临床过程和治疗效果。方法:连续性斜视患者(<45岁)分为两组:其中第1组为内斜视患者;第2组为外斜视患者。我们使用棱镜屈光度(PD)来测量患者的偏斜角,对第一次手术后的患者在随访期间(6mo内)进行保守疗法。同时选择随访6mo后偏斜角仍超过15PD的斜视患者进行再次手术。本实验所有参与对象均进行了强制性检查。所有二次手术患者均在全身麻醉下进行,并于术后3,15d;3,6mo进行追踪随访。结果:在整个研究期间有28.8%的患者发展成为连续性斜视。所有斜视患者主视眼(固视眼)的二次手术均在一次手术后6～9mo内进行。经过二次手术干预后,在随访期间两组患者均获得了很好的治疗效果,同时并未出现过矫的趋势。结论:在二次手术过程中我们需谨慎肌肉矫正以避免日后过矫。

关键词：连续性斜视主视眼手术矫正海德拉巴

Stimulation of Multiple Leader Formation in Some Genotypes of <i>Acacia mangium</i>and <i>Acacia auriculiformis</i>with 6-Benzylaminopurine (BAP)

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Open Journal of Forestry 2015年第7期5卷 637-650页

作者： ahmed Mohamed Adam Eldoma Sures Kumar Muniandi Nor Aini Ab Shukor College of Forestry and Range Sciences Sudan University of Science and Technology Khartoum Sudan Department of Forest Management Faculty of Forestry Universiti Putra Malaysia Serdang Malaysia Institute of Tropical Forestry and Forest Product Universiti Putra Malaysia Serdang Malaysia

Acacia mangium Willd. and Acacia auriculiformis A. Cunn. ex. Benth. are two of the fast-growing tropical acacias which have received priority for genetic assessment and improvement. They were therefore proposed for timber production in a short rotation in Malaysia but were impeded by the multiple leaders (ML) formation which limited their value as sawn timber. This work attempts to investigate the causes of ML formation in four genotypes of A. mangium and A. auriculiformis as related to apical dominance, nutrition and plant growth hormones and their correlations. The effects of 6-benzylaminopurine and decapitation on ML formation of these genotypes were also investigated. 6-benzylaminopurine (BAP) as a foliar spray and also decapitation did not stimulate ML formation. However, they significantly increased the number of branches and reduced all other growth traits including height. However, basal diameter was not affected by decapitation. The effects of BAP increased consistently with increasing level of application. BAP at 1500 mg·Lǃ resulted in mortality of A. mangium provenances while A. auriculiformis provenances survived and grew normally. Some of the BAP treated plants of both species developed juvenile pinnate leaves. Decapitation of the apical bud resulted in the activation of the lateral bud immediately below the point of decapitation.

关键词： Cytokinin Multiple Leader Provenance Genotypes Apical Control Stem Form

Complementary Split Ring Resonator Loaded Substrate Integrated Waveguide Leaky Wave Antenna

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Open Journal of Antennas and Propagation 2019年第1期7卷 1-11页

作者： Basma M. Yousef ahmed M. Attiya A. A. Shaalan Communications Department Delta Higher Institute for Engineering and Technology Mansoura Egypt Microwave Department Electronics Research Institute Cairo Egypt Electronics and communications Department Faculty of Engineering Zagazig University Zagazig Egypt

In this paper we present the design of a leaky wave antenna based on Substrate Integrated Waveguide (SIW) loaded by Complementary Split Ring resonator (CSRR). The proposed antenna is designed for 5G application with a center frequency around 28 GHz. The antenna is implemented on Roger RT/Duriod 5880. The loading CSRRs are designed to resonate at 28 GHz. The design is simulated by using both High-Frequency Simulation Software (HFSS) and Computer Simulation Technology (CST) for verification. Experimental measurements are also presented.

关键词： Leaky Wave Antennas MM-Wave 5G SIW Antennas