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Green and Sustainable Chemistry 2021年第4期11卷 125-141页

作者： Mohammad abdul Matin Md. Aftab Ali Shaikh Md. Anwar Hossain Md. Alauddin Tapas Debnath mohammed abdul Aziz Centre for Advanced Research in Sciences (CARS) Dhaka University Dhaka Bangladesh Department of Chemistry Dhaka University Dhaka Bangladesh National University Gazipur Bangladesh Department of Theoretical and Computational Chemistry Dhaka University Dhaka Bangladesh

The study of various oxidation states of chromium with Sargassum sp. is of particular interest since hexavalent chromium is reduced to trivalent chromium in an aqueous solution. In this study, a systematic density functional theory (DFT) calculations were performed to study the interactions of transition metal chromium ion with different oxidation states and spin states with the Sargassum sp. decorated with carboxylate (acetate) at the wB97XD/6-311++ G(d,p) level of theory. The structures and binding energies of chromium metal-carboxylate complexes at various oxidation states and spin states in gas phase were examined. The coordination strength of Cr(VI) with the acetate ligand was predominantly the strongest compared to the other oxidation states. Vibrational frequency analysis, for the homoleptic monomers of tris [CrIII(AC)3]0 and [CrVI(AC)3]3+ complexes, illustrate good harmony with the experimen

关键词： Transition Metal Time Dependent Density Functional Theory Binding Energy Spectroscopy Electronic Properties and Homoleptic Coordinated Complex

Microalgae cultivation in photobioreactors: sustainable solutions for a greener future

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Green Chemical Engineering 2024年第4期5卷 418-439页

作者： Shaikh Abdur Razzak Khairul Bahar K.M.Oajedul Islam abdul Khaleel Haniffa mohammed Omar Faruque S.M.Zakir Hossain Mohammad M.Hossain Chemical Engineering Department King Fahd University of Petroleum and Minerals Center for Refining and Advanced Chemicals King Fahd University of Petroleum & Minerals Department of Chemical Engineering University of Bahrain

Microalgae cultivation in photobioreactors（PBRs） has emerged as a promising and sustainable approach to address various environmental and energy challenges, offering a multitude of benefits across diverse *** developments in microalgae cultivation in photobioreactors have contributed substantially to the development and optimization of sustainable bioprocesses. This review presents a comprehensive analysis of recent innovations and breakthroughs in the field of microalgae cultivation, with a specific focus on their application in photobioreactors, aimed at paving the way for a greener future. This study in-depth examines the advantages of microalgae cultivation in photobioreactors, concentrating on its effectiveness in wastewater treatment, CO2bioremediation, and the production of biofuels and high-value products. The review evaluates the effects of light,solar irradiation, temperature, nitrogen and phosphorus concentrations in culture media, CO2concentrations, and pH on microalgae growth performance, including specific growth and biomass productivity. The study also examines open systems like unstirred ponds, raceway ponds, and circular ponds and closed systems like horizontal tubular, vertical bubble-column, airlift, flat panel, and plastic-bag photobioreactors, comparing their pros and cons. To optimize microalgae cultivation, key factors in photobioreactor design, including photosynthetic efficiencies, light/dark（L/D） cycles, CO2concentrations, mass transfer, hydrodynamics behavior, and p H, are extensively investigated. In addition, the review outlines recent developments in large-scale photobioreactors and highlights the challenges and opportunities associated with photobioreactor scale-up and design parameter optimization, including genetic engineering and economic feasibility. This article is a vital resource for researchers, engineers, and industry professionals seeking sustainable bioprocesses and the application of microalgae-based technol

关键词： Microalgae biomass CO 2 biofixation Wastewater treatment Biofuel Photobioreactors

Undergraduate Medical Students＇ Perception about Learning in Small Group at University of Sharjah

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Journal of Health Science 2016年第4期4卷 207-214页

作者： Mousa Abu Ghoush mohammed abdul Qadir Zaharaa Al-Lami Safa Al-abdullah Nihar Dash College of Medicine University of Sharjah Sharjah 27272 United Arab Emirates

Learning in small groups is a key instructional strategy in medicine and more so in the problem based curriculum （PBL）. It is perceived that working in small groups enhances acquisition, processing and retention of the ever increasing medical knowledge. Learning in small group will help the students to be better learner and improve their personal, social and cognitive skills. The objective of this study is to describe undergraduate medical students＇ perception toward small group learning in a PBL curriculum. A cross-sectional descriptive study was conducted among the undergraduate medical students in the phase 2 of their MBBS program at University of Sharjah. A total of 277 undergraduate medical students participated in the study. The mean age of the study population was 20 years and 61% were female students. The most rewarding experiences as perceived by medical students were exposure to different views （71%）, making friends （57%） improving their grades （52%） and underwent personal development （46%）. The main disadvantages of small group learning were waste of time （55%）, side talks （16%）, and other distractions （14%）. Majority of students had a positive perception towards small group learning and agreed that it enhances their collaborative learning and team work skills. Small group learning was perceived as a key instructional method in the PBL curriculum [3] and it enhances their grades, learning outcomes, personal development and critical thinking abilities [4].

关键词： PBL small group learning University of Sharjah College of Medicine.

用白胶和硬挺剂上浆处理对染色扎丽纱性能的影响(英文)

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蚕业科学 2017年第6期43卷 1055-1058页

作者： Kadhar mohammed abdul Hariraj Gopal Rameshbabu Vijay Krishna Subash Venkappa Naik 中央丝绸委员会蚕丝技术研究中心印度班加罗尔市560068

印度泰米尔那德邦的扎丽纱手工生产中常采用上浆处理提高蚕丝纱线的可织性和降低断头率。白胶是常用的一种粘稠度高的上浆剂,而硬挺剂是新出现的一种天然胶,其粘稠度相对较低。分别测试分析利用白胶、硬挺剂上浆处理对已染色蚕丝纱线的... 详细信息

印度泰米尔那德邦的扎丽纱手工生产中常采用上浆处理提高蚕丝纱线的可织性和降低断头率。白胶是常用的一种粘稠度高的上浆剂,而硬挺剂是新出现的一种天然胶,其粘稠度相对较低。分别测试分析利用白胶、硬挺剂上浆处理对已染色蚕丝纱线的质量、色泽、韧性和延展性的影响,结果显示:用白胶处理后紫罗兰色蚕丝纱线的质量增加率显著提高,色度L*值、a*值和b*值变化较大,色差值ΔE*>2,但蚕丝纱线的韧性、延展性未发生显著变化;而用硬挺剂处理,对紫罗兰色、黄色和紫色3种颜色蚕丝纱线的质量、色差值、韧性和延展性均无明显影响。依据试验结果,建议采用硬挺剂对染色蚕丝纱线进行上浆处理。

关键词：蚕丝纱线上浆白胶硬挺剂质量增加率色度韧性延展性

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The antihyperglycemic effect of Bridelia ndellensis ethanol extract and its fractions is mediated by an insulinotropic action

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Journal of Diabetes Mellitus 2013年第3期3卷 111-115页

作者： Selestin Dongmo Sokeng Begum Rokeya Jamadder mohammed abdul Hannan Liaquat Ali Pierre Kamtchouing Department of Biological Sciences University of Ngaoundéré Ngaoundéré Cameroon Department of Pharmacy North South University Dhaka Bangladesh Laboratory of Animal Physiology Faculty of Science University of Yaounde Yaounde Cameroon Research Division Bangladesh Institute of Research and Rehabilitation in Diabetes Endocrine and Metabolic Disorders (BIRDEM) Dhaka Bangladesh

Backgroung: Bridelia ndellensis (Euphorbiaceae) is used as a traditional plant treatment of diabetes. The aim of the present study was to investigate the mechanism involved in the antihyperglycemic effects of this plant. Methods: An intestinal perfusion technique was used to study the effect of the ethanol extract of B. ndellensis on the intestinal absorption of glucose in normal rats fasted for 36 h. The effect of the extract (50 and 100 mg/kg) on Insulin secretion was evaluated using BRIN-BD11 pancreatic cells. Results: In a perfused rat intestinal preparation in situ, the plant extract at a concentration of 5 mg/ml did not show any inhibitory effects on glucose absorption when compared with control animals. Ouabain which is an inhibitor of glucose transport across the small intestine significantly (p < 0.001) decreased the glucose absorption during the whole perfusion period compared with the control group. On the other hand, the plant extract inhibited the gastrointestinal motility induced by Barium sulphate milk in rats. The ethanol extract of B. ndellensis at concentrations of 50 and100mg/ml stimulated in a concentration-dependent manner the insulin secretion from BRIN-BD11 cells in vitro. The induction of insulin release was significantly different when compared to control with the concentration of 100 μg/ml (P < 0.001). Alanine (10 mM) used as positive control, significantly (p < 0.001) stimulated insulin release from BRIN-BD11 cells. Conclusion: The present study has revealed that B. ndellensis ethanol extract stimulates insulin secretion and does not affect the glucose absorption, and it has suggested that the antihyperglycemic effects of B. ndellensis is partly mediated by the stimulation of insulin secretion.

关键词： Bridelia ndellensis Ethanol Extract Intestinal Glucose Absorption Insulin Secretion in Vitro

A Density Functional Theory (DFT) Investigation on the Structure and Spectroscopic Behavior of 2-Aminoterephthalic Acid and Its Sodium Salts

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Green and Sustainable Chemistry 2020年第2期10卷 39-55页

作者： Mohammad A. Matin Samiran Bhattacharjee Md. Aftab Ali Shaikh Tapas Debnath mohammed abdul Aziz Centre for Advanced Research in Sciences (CARS) University of Dhaka Dhaka Bangladesh Department of Chemistry University of Dhaka Dhaka Bangladesh Department of Theoretical and Computational Chemistry University of Dhaka Dhaka Bangladesh

As a substitute for lithium ion batteries, Na chemistry for ion battery systems is promising materials for energy storage applications for the next generation. Herein, the structures, IR and UV-visible spectra of 2-aminoterephthalic acid (H2ATA), disodium 2-aminoterephthalate (Na2ATA), trisodium 2-aminotere-phthalate (Na3ATA) and tetrasodium 2-aminoterephthalate (Na4ATA) have been studied using density functional theory (DFT/B3LYP/6-311++G(d,p)). The theoretical geometric parameters and FTIR results showed very good agreement with the experimental results. Different conformers of Na2ATA, Na3ATA and Na4ATA showed that the binding energy per sodium in Na2ATA, Na3ATA and Na4ATA is -694.94, -543.44 and -407.46 kJ/mol, respectively. The Na3ATA and Na4ATA salts are higher in energy (151.46 and 287.48 kJ/mol, respectively) than Na2ATA, indicating the higher stability of the Na2ATA complex. The calculated binding energy, enthalpy and Gibbs free energy of Na2ATA, Na3ATA and Na4ATA revealed that the compounds are thermodynamically stable. Natural bond orbital (NBO) analysis of Na2ATA, Na3ATA and Na4ATA indicated that the major interaction occurs between the lone pair electrons of the oxygen atom and anti-bonding orbitals of carbon atoms of the two carboxylate ions. UV-visible spectrum of the free H2ATA and its sodium salts Na2ATA, Na3ATA and Na4ATA were performed using the time-dependent density functional theory (TD-DFT) method at the level of B3LYP/6-311++G(d,p). The frontier molecular orbital energetic parameters and global reactivity descriptors revealed that the Na4ATA and Na3ATA complexes exhibited a higher band gap (ΔEgap) and electronegativity (χeV) than Na2ATA.

关键词： 2-Aminoterephthalic Acid Sodium 2-Aminoterephthalate Trisodium 2-Aminoterephthalate Tetrasodium 2-Aminoterephthalate Density Functional Theory

Evaluation of Plasma Urokinase-Type Plasminogen Activator Receptor and Interleukin 34 in Patients with Chronic Hepatitis C as Serological Fibrosis Markers

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Open Journal of Immunology 2021年第2期11卷 25-38页

作者： Mona M. abdulwehab Aziza A. Ahmed Wafaa M. Elzefzafy Reham Sabry Abeer mohammed abdul-Mohymen Clinical Pathology Department Faculty of Medicine for Girls Al-Azhar University Cairo Egypt Hepatology Gastroenterology and Infectious Diseases Departments Faculty of Medicine for Girls Al-Azhar University Cairo Egypt

Background: Hepatitis C Virus (HCV) infection is a progressive disease that may result in chronic hepatitis, fibrosis and cirrhosis. Assessment of liver fibrosis is an essential factor in the management of chronic HCV. Objective: To evaluate plasma soluble Urokinase Plasminogen Activator Receptor (sUPAR) and interleukin-34 (IL-34) as serological markers of liver fibrosis in patients with chronic HCV. Methods: This case-control study enrolled 60 chronic HCV patients who were subdivided into three groups of mild, moderate and severe hepatic fibrosis depending on Fibrosis-4 score (FIB-4). Patients were compared with 20 age and sex-matched controls. Plasma sUPAR and IL-34 levels were measured by Enzyme Linked Immunosorbent Assay (ELISA). Results: Plasma sUPAR and IL-34 were significantly increased in HCV patients when compared with controls, and their increase was positively correlated with the progression of hepatic fibrosis. Plasma sUPAR and IL-34 positively correlated with Aspartate Aminotransferase (AST) and Alanine Aminotransferase (ALT), and negatively correlated with hemoglobin concentration and platelet count. The output data of Receiver Operating Characteristic (ROC) curve to differentiate patients from controls revealed that sUPAR at cut-off > 186.2 ng/L and Area Under Curve (AUC) of 0.944 had (85%) sensitivity and (100%) specificity, and IL-34 at cut off > 16.4 ng/L and AUC of 0.942 had (75%) sensitivity and (100%) specificity. The output data of ROC curve to differentiate severe from mild to moderate hepatic fibrosis patients revealed that sUPAR at cut-off > 510 ng/L and AUC of 0.837 had (80%) sensitivity and (90%) specificity. While IL-34 at cut off > 55.3 ng/L and AUC of 0.844 had (85%) sensitivity and (80%) specificity. Conclusions: Increased plasma levels of sUPAR and IL-34 in chronic HCV patients with liver fibrosis and their increase was parallel to the degree of liver

关键词： HCV Liver Fibrosis Serological Markers sUPAR IL-34

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双抱平自动卷纬机的生产性能测评（英文）

蚕业科学 2017年第1期43卷 102-105页

作者： Kadhar mohammed abdul Rameshbabu Vijay Krishna Mahesh Madigal Gurulingappa Subash Venkappa Naik 中央丝绸委员会蚕丝技术研究中心印度班加罗尔市560068

在印度泰米尔纳德邦的蚕丝生产中,手动卷纬机的占比较高。为了提高生丝的产量与品质,该州引进了具有卷纬装置的双抱平自动卷纬机。随机选取30名纺织工人,对自动卷纬机的生产效率进行测试,经配对t检验结果表明,与手动卷纬机相比,自动卷... 详细信息

在印度泰米尔纳德邦的蚕丝生产中,手动卷纬机的占比较高。为了提高生丝的产量与品质,该州引进了具有卷纬装置的双抱平自动卷纬机。随机选取30名纺织工人,对自动卷纬机的生产效率进行测试,经配对t检验结果表明,与手动卷纬机相比,自动卷纬机的生产效率显著提高,其中生丝产量提高了196%,损耗率下降了47%,收益增加了196%。另依据问卷调查数据,双抱平自动卷纬机还具有占地面积少、能耗低、噪音小等优点。

关键词：自动卷纬机使用性能生产效率生丝产量损耗率收益

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Pros and cons of live kidney donation in prediabetics: A critical review and way forward

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World Journal of Transplantation 2024年第1期14卷 12-31页

作者： Muhammad abdul Mabood Khalil Nihal mohammed Sadagah Jackson Tan Furrukh Omair Syed Vui Heng Chong Salem H Al-Qurashi Center of Renal Diseases and Transplantation King Fahad Armed Forces Hospital JeddahJeddah 23311Saudi Arabia Department of Nephrology RIPAS Hospital Brunei DarussalamBrunei Muara BA1710Brunei Darussalam Division of Gastroenterology and Hepatology Department of MedicineRaja Isteri Pengiran Anak Saleha HospitalBandar Seri Begawan BA1710Brunei Darussalam

There is shortage of organs,including kidneys,*** with deceased kidney transplantation,there is a significant rise in live kidney *** prevalence of prediabetes(PD),including impaired fasting glucose and impaired glucose tolerance,is on the rise across the *** teams frequently come across prediabetic kidney donors for *** are at risk of diabetes,chronic kidney disease,cardiovascular events,stroke,neuropathy,retinopathy,dementia,depression and nonalcoholic liver disease along with increased risk of all-cause ***,most of the studies done in prediabetic kidney donors are retrospective in nature and have a short follow up *** is lack of prospective long-term studies to know about the real risk of complications after ***,there are variations in recommendations from various guidelines across the globe for donations in prediabetics,leading to more confusion among *** increases the responsibility of transplant teams to take appropriate decisions in the best interest of both donors and *** review focuses on pathophysiological changes of PD in kidneys,potential complications of PD,other risk factors for development of type 2 diabetes,a review of guidelines for kidney donation,the potential role of diabetes risk score and calculator in kidney donors and the way forward for the evaluation and selection of prediabetic kidney donors.

关键词： Live kidney donation Prediabetes Impaired fasting glucose Impaired glucose tolerance Review

印度泰米尔纳德邦二化性与多化性家蚕品种的蚕茧缫折影响因素分析(英文)

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蚕业科学 2014年第2期40卷 358-362页

作者： KADHAR mohammed abdul MAHESH Madigal Gurulingappa RAMESHBABU Vijay Krishna GHOSH Malai Kumar BASU Arindam 蚕丝技术研究中心蚕丝检验与测试室印度康契普拉姆区631502 蚕丝中央委员会蚕茧测试中心印度达尔马布里孔巴托市641018 蚕丝中央委员会蚕丝技术研究中心印度班加罗尔市560068

印度泰米尔纳德邦蚕区饲养二化性和多化性家蚕品种。依据该地区蚕茧市场蚕茧检测中心2006—2010年对蚕茧缫折及相关指标的测试数据进行统计分析,比较影响二化性品种和多化性品种蚕茧缫折的主要因素。统计分析显示,多化性家蚕品种蚕茧的... 详细信息

印度泰米尔纳德邦蚕区饲养二化性和多化性家蚕品种。依据该地区蚕茧市场蚕茧检测中心2006—2010年对蚕茧缫折及相关指标的测试数据进行统计分析,比较影响二化性品种和多化性品种蚕茧缫折的主要因素。统计分析显示,多化性家蚕品种蚕茧的缫折较高,主要是受次茧率的显著影响;尽管近年来二化性家蚕品种的次茧率也明显增加,但高次茧率对其缫折的影响并不显著,这是因为对缫折有明显影响的茧层率在过去的5年里得到显著提高。结果提示,泰米尔纳德邦饲养的二化性家蚕品种具有高茧层率和低缫折的优势。

关键词：家蚕二化性多化性缫折次茧率茧层率

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