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牛顿加热条件下近弹性表面Jeffrey流变流体中浮游微生物的游动和纳米流体的悬浮特征

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Journal of Central south University 2021年第11期28卷 3279-3296页

作者： siddra rana Rashid MEHMOOD M.M.BHATTI Mohsan HAssAN Department of Mathematics Faculty of Basic Sciences University ofWahWah CanttPakistan Department of Mathematics Faculty of Natural SciencesHITEC UniversityTaxila CanttPakistan College of Mathematics and systems science Shandong University of Science and TechnologyQingdao 266590China Department of Mathematics Comsats University IslamabadLahore CampusPakistan

生物对流在可持续、环境友好型燃料电池技术中具有重要作用。这种设计的生物数学模型需要不断的改进,以在实验和计算结果中取得强有力的一致性。实际上,微生物在工业产品的制造过程中,特别是在肥料工业中,运输各种成分。通过与物质散热... 详细信息

生物对流在可持续、环境友好型燃料电池技术中具有重要作用。这种设计的生物数学模型需要不断的改进,以在实验和计算结果中取得强有力的一致性。实际上,微生物在工业产品的制造过程中,特别是在肥料工业中,运输各种成分。通过与物质散热相关的物理现象来测量分子结构的传热特性。受仿生燃料电池近壁流动现象的启发,本文运用数值方法研究了在靠近伸展壁面的流变性Jeffery流体中运动的旋控微生物的横向游动。通过适当的相似度变换,将主导物理模型转化为非线性ODE系统。采用R-K Fehlberg打靶法在数学软件上进行数值模拟,得到所有物理条件对旋控微生物的速度、温度、浓度和体积分数的影响。结果表明,由于布朗运动和热泳参数的影响,表面的热通量和质量通量以及运动微生物的密度均有所下降。与已有文献进行比较,验证对流边界条件下极限情况结果的有效性。

关键词：斜滞点流动 Jeffery流体生物对流运动陀螺仪游泳纳米粒子

susceptibility of microorganism to selected medicinal plants in Bangladesh

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Asian Pacific Journal of Tropical Biomedicine 2014年第11期4卷 911-917页

作者： s.M.Masud rana Md.Mustahsan Billah Mohammad salim Hossain A.K.M.saifuddin s.K.M.Azizul Islam sujan Banik Zannatul Nairn Golam sarwar Raju Department of Pharmacy Noakhali Science and Technology UniversitySonapurNoakhali-3814Bangladesh Department of Physiology Biochemistry and PharmacologyChittagong Veterinary and Animal Sciences UniversityChittagongBangladesh Department of Pharmacy Atish Dipankar University of Science and TechnologyBananiDhakaBangladesh

Objective:To analyze in-vitro antimicrobial activities of some ethno-pharmacologically significant medicinal plants(methanol extract) against the pathogenic microorganisms(Escherichia coli,salmonella spp..Bacillus *** *** niger and Candida albicans).Methods:The disc diffusion method was applied for antibacterial test and the poisoned food technique was applied for antifungal ***:The methanol extract of Terminalia chebula(bark),Fhyllanthus acidus(fruits).sarcochlamys pulcherrima(leaves) and Abelmoschus esculcntus(fruits) had significant in vitro antibacterial activity angainst the entire test samples in comparison to standard drug *** of the plant extracts showed low activity against Gram negative bacteria while potential activity against Gram positive *** antifungal activities of methanol extracts of these plants and standard drug griseofulvin were determined against two pathogenicfungi,and Polygonum Iapathifolium(leaves) and Cinnamomum tamala(leaves) showed maximum activity,while Erioglossum rubiginosum(leaves) showed no antifungal ***:Further chemical and pharmacological investigations are required to identify and isolate chemical constituents responsible for these potential bioactivities and thus to determine their full spectrum of efficacy.

关键词： susceptibility Zone of inhibition Percentage of inhibition Antibacterial activity Antifungal activity

Interaction of cetyltrimethylammonium bromide with drug in aqueous/electrolyte solution:A combined conductometric and molecular dynamics method study

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Chinese Journal of Chemical Engineering 2018年第1期26卷 159-167页

作者： Md.Anamul Hoque Md.Masud Alam Mohammad Robel Molla shahed rana Malik Abdul Rub Mohammad A.Halim Mohammed Abdullah Khan Farida Akhtar Department of Chemistry Jahangirnagar UniversitySavarDhaka 1342Bangladesh Chemistry Department Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Center of Excellence for Advanced Materials Research King Abdulaziz UniversityJeddah 21589Saudi Arabia Division of Quantum Chemistry BICCBThe Red-Green Computing Centre218 Elephant RoadDhaka 1205Bangladesh Institut Lumière Matière Université Lyon 1-CNRSUniversitéde Lyon69622 Villeurbanne CedexFrance

Interaction between beta-lactum antibiotic drug ciprofloxacin hydrochloride(CFH)and cationic surfactant cetyltrimethylammonium bromide(CTAB)was performed conductometrically in aqueous as well as in the occurrence of different salts(NaCl,KCl as well as NH_4Cl)over the temperature range of 298.15–323.15 K at the regular interval of 5 *** drug has been suggested for the treatment of bacterial infections such as urinary tract infections and acute sinusitis.A clear critical micelle concentration(CMC)was obtained for pure CTAB as well as(CFH+CTAB)mixed *** decrease in CMC values of CTAB caused by the addition of CFH reveals the existence of the interaction between the components and therefore it is the indication of micelle formation at lower concentration of CTAB and their CMC values further decrease in attendance of salts.A nonlinear behavior in the CMC versus T plot was observed in all the *** ΔG_m^0 values are found to be negative in present study systems demonstrated the stability of the *** values of ΔH_m^0 and Δs_m^0 reveal the existence of hydrophobic and electrostatic interactions between CFH and *** thermodynamic properties of transfer for the micellization were also evaluated and discussed in *** dynamic simulation disclosed that environment of water and salts have impact on the hydrophobic interaction between CFH and *** water and salts,CTAB adopts spherical micelle in which charged hydrophilic groups are interacted with waters whereas hydrophobic tails form the core of the *** hydrophobic core region is highly conserved and *** addition,micelle formation is more favorable in aqueous Na Cl solution than other solutions.

关键词：相互作用溴化物动力学方法电解质学习分子尿道感染表面活化剂

Relationship between Radiological Lung Findings and Laboratory Ferritin and D-Dimer Levels in Patients with COVID-19 Infection

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International Journal of Clinical Medicine 2022年第10期13卷 468-477页

作者： Mona F. Kardus rana A. Hallak Ahmed Alakedi Noha Yusef sindi Hadeel Abdullah Alhawas shine Rashed Hessa Al-Twalah Ibrahim Khoja Department of Laboratory Medicine Dr. Sulaiman Al Habib Hospital—ARRYAN Riyadh Saudi Arabia Department of Laboratory Medicine King Saud Medical City Riyadh Saudi Arabia

Introduction: Pulmonary symptoms of COVID-19 infection range from asymptomatic infection to severe pneumonia. Pathogenesis and severity of symptoms were found to be related to the body’s immune response. Objectives: Ferritin and D-Dimer in COVID-19 confirmed cases can predict lung injury and possible poor patient prognosis. Materials and Methods: Patients who had been admitted to Dr. sulaiman Alhabib-Arryan Hospital with positive COVID-19 polymerase chain reaction (PCR) tests between March 2020 and December 2021 were studied for blood ferritin and D-Dimer levels in relation to pulmonary radiological findings. Results: A total of 494 cases are included in this study. Male patients represent 74.1% of the cases, and the mean age is 51.68 ± 13.37 years. Increased age, ferritin, D-Dimer levels, and respiratory symptoms are factors that showed a statistically significant association with positive computed tomography (CT) findings. Receiver operator characteristic curve (ROC) showed that ferritin has a higher capability than D-Dimer to detect CT findings and that both are equal in predicting possible patient mortality. suggested cutoff values for Ferritin > 336 ng/mL, with 78.21% sensitivity and 86.42% specificity and for D-Dimer > 0.55 mg/L FEU, with sensitivity of 74.82% and specificity of 75.31%. For mortality, the suggested cutoff point for ferritin is >864.6 ng/mL, which gives a sensitivity of 80.26 and a specificity of 64.83%. The suggested cutoff point for D-Dimer is >1.46 mg/L FEU, which gives a sensitivity of 65.79% and a specificity of 78.23%. Conclusion: Laboratory markers such as Ferritin and D-Dimer can be an accurate predictor of lung injury in COVID-19 patients and their increased values can predict the poor patient prognosis and possible mortality if aggressive hospital care is not provided.

关键词： Ferritin COVID-19 D-Dimer

面向汉语国际教学的微视频设计与传播方法研究与实践

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创新教育研究 2023年第9期11卷 2452-2458页

作者：冯兴乐韩佳倩 MdJuel rana 张伟长安大学信息工程学院陕西西安中国联合网络通信有限公司西安软件研究院陕西西安长安大学国际教育学院陕西西安

随着“一带一路”倡议的实施,我国对外交流日益频繁,如何利用信息化技术弘扬中华文化,提升国家软实力是亟待解决的问题。本文结合移动互联时代下的信息消费习惯,分析了微视频具有的内容丰富化、时间碎片化、空间灵活性等特点,结合中文... 详细信息

随着“一带一路”倡议的实施,我国对外交流日益频繁,如何利用信息化技术弘扬中华文化,提升国家软实力是亟待解决的问题。本文结合移动互联时代下的信息消费习惯,分析了微视频具有的内容丰富化、时间碎片化、空间灵活性等特点,结合中文国际化教学的特定场景,研究中文微视频的设计理念、制作流程和传播方式。并依托海外汉语培训中心的教学实践,进行教学效果的调查统计与分析,并给出微视频教学的建议。研究成果有助于微视频教学的普及与发展,为中华文化的国际化推广提供一些思路。

关键词：汉语国际教学微视频设计传播方法

Comparative study of Three β Lactamase Test Methods in <i>staphylococcus</i>aureus Isolated from Two Nepalese Hospitals

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Open Journal of Clinical Diagnostics 2014年第1期4卷 47-52页

作者： shrestha Bidya rana shamser suman Department of Medicine Nepal Police Hospital Kathmandu Nepal Department of Microbiology Tri-Chandra Campus Tribhuvan University Kathmandu Nepal

Background: β lactamase is a plasmid-encoded enzyme that hydrolyzes β lactam ring of β lactam antibiotics rendering them ineffective. These enzymes, produced by staphylococcus aureus along with many other organisms, have hindered the use of many useful and once life-saving β lactam antibiotics from clinical practice. Methods: This study was aimed to compare three test methods-chromogenic, acidimetric and iodometric-for the detection of β lactamase enzyme produced by 404 nosocomial induced s. aureus isolated from two Nepali hospitals, Kathmandu based hospital (KBH) and Lalitpur based Hospital (LBH). The study was carried out following standard methodology during November 2007 to June 2009 in the Department of Microbiology, Institute of Medicine, Kathmandu, Nepal. sensitivity, specificity, efficiency, positive predictive value, and negative predictive values of the tests were calculated taking penicillin resistance and sensitivity as the standard. Results: Chromogenic method was found to be the most sensitive (98.93%) and efficient (98.51%) test and had a high positive predictive value (99.46%). sensitivity (98.4%) and efficiency (98.27%) of iodometric method was found to be comparable to chromogenic test;its specificity (96.55 %) and positive predictive value (99.73%) were the highest among the 3 tests. Acidimetric test was the least sensitive (97.33%) and efficient (96.78%). Of note, the sensitivity and specificity of these test methods have been compromised due to the negativity of few penicillin resistant isolates and positivity of some penicillin sensitive isolates, respectively. Conclusion: Chromogenic method was found comparatively to be the best test method for the detection of β lactamase production. However, in contrast to the other two test methods whose reagents can be locally and economically prepared, chromogenic test’s use has been impeded by its cost and unavailability in the local Nepali market.

关键词： β Lactam β Lactamase Nosocomial s. aureus MssA MRsA Nepal

重新认知战争年代:从中国的第二次世界大战经历解读21世纪全球化背景下的当代世界性危机(英文)

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重新认知战争年代:从中国的第二次世界大战经历解读21世纪全球化...

培养于生物降解支架膜内的胚胎干细胞可修复小鼠的梗塞心肌(英文)

北京论坛（2009）文明的和谐与共同繁荣——危机的挑战、反思与和谐发展

作者： rana Mitter University of Oxford

This paper will argue that a new understanding of the history and significance of China's experience of World WarⅡprovides crucial context for understanding the aftermath of the contemporary global *** particular,it is vitally important to understand the experience of China during the period of the second World War in a comparative ***'s experience of wartime in 1937-45 provided it with many opportunities to develop a global profile as a cooperative major power in the new world *** the war against Japan was a time of terrible crisis for China,it also provided a chance for a fundamental rethinking of *** addition,the comparisons and contrasts between the experience of China in wartime and other major powers(including its allies the Us,UK,and UssR) are extremely useful for helping us understand the way in which geopolitical actors today can use their recent historical past to reshape their strategies as part of the contemporary international order. In recent years,interest around the world in the significance of World WarⅡhas grown,rather than *** as far apart as France,the United states,Russia,and Britain have all reconsidered the significance of their wartime history in shaping contemporary *** can be seen in areas including the development of the European Union and the desire to build new patriotic memorials to the wartime veterans in the United ***,until recently,there has been relatively little attention in the west to the growing understanding of China's own experience of wartime in the shaping of Chinese *** influence is visible both in the writing of academic history and in the wider society,including television shows,popular books, and *** growth of interest in World WarⅡin China fits into a global growth of interest in this subject as a historical topic with great significance for the present ***, we are still at an early stage in analysing China's understanding

关键词：第二次世界大战全球化背景

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生理学报 2005年第6期57卷 673-681页

作者：可庆恩杨寅柯 Jamal s.rana 陈玉 James P.MORGAN 萧永福 Beth Israel Deaconess医学中心干细胞研究实验室与Charles A.Dana研究所 Harvard-Thorndike实验室心血管内科马萨诸塞州总医院医学系哈佛大学医学院美国波士顿马萨诸塞州02215

我们以往的研究表明,直接在心肌梗塞(myocardial infarction,MI)动物的心脏缺血区注射胚胎干细胞(embryonic stem cells,EsCs)可以提高其心肌功能,干细胞组织工程学可以使组织再生、修复。本研究旨在观察将EsCs接种到生物降解膜内并移... 详细信息

我们以往的研究表明,直接在心肌梗塞(myocardial infarction,MI)动物的心脏缺血区注射胚胎干细胞(embryonic stem cells,EsCs)可以提高其心肌功能,干细胞组织工程学可以使组织再生、修复。本研究旨在观察将EsCs接种到生物降解膜内并移植到梗塞部位的效果。通过结扎小鼠左冠状动脉制作MI模型,将培养3d的带有小鼠EsCs的聚羟基乙酸膜(polyglycolic- acid,PGA)移植到心肌缺血及边缘区表面。实验小鼠分成4组:假手术组、MI组、MI+PGA组、MI+EsC组,移植操作 8周后检测血流动力学和心肌功能。MI组的血压和左心室功能显著降低。与MI组和MI+PGA组相比,MI+EsC组的血压和心室功能显著改善,存活率也显著增高,在梗塞区检测到GFP阳性组织,表明EsCs存活,并可能有心肌再生。以上结果表明,移植生物降解膜内的EsCs可修复小鼠梗塞区心肌细胞并提高心脏功能。将EsCs和生物降解材料联合运用可能为修复受损心脏提供一个新的治疗方法。

关键词：心肌梗塞胚胎干细胞支架膜心肌修复

有氧训练对女性血清对氧磷酶活性的影响及其与PON1-192表型的关系（英文）

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Journal of sport and Health science 2016年第4期5卷 462-468页

作者： Gulbin Rudarli Nalcakan s.rana Varol Faruk Turgay Mesut Nalcakan M.Zeki Ozkol s.Oguz Karamizrak Coaching Education Department School of Physical Education and SportsEge University Esrefpasa Hospital Medical Faculty Sports Medicine DepartmentEge University

背景:对氧磷酶1(PON1)是一种抗氧化酶,能防止高密度脂蛋白(HDL)与低密度脂蛋白(LDL)氧化。关于运动对PON1活性的作用及其与PON1表型关系的研究还十分有限。本研究调查中年女性PON1-192表型、PON1活性、有氧运动、血脂水平、脂蛋白浓度... 详细信息

背景:对氧磷酶1(PON1)是一种抗氧化酶,能防止高密度脂蛋白(HDL)与低密度脂蛋白(LDL)氧化。关于运动对PON1活性的作用及其与PON1表型关系的研究还十分有限。本研究调查中年女性PON1-192表型、PON1活性、有氧运动、血脂水平、脂蛋白浓度间的关系。方法:从300名高加索人种女性中选取91名受试者,分为2组:平时进行规律有氧运动的运动组(n=50)、对照组(n=41)。用标准酶催化法确定血清PON1、盐刺激PON1(ssPON1)、芳香肌酯酶(ARE)活性,胆固醇水平,总HDL与HDL亚类的胆固醇水平与ARE活性(血清混合聚乙二醇分离出上清液),以及血脂水平、脂蛋白浓度用血清ssPON1(ARE)活性比率确定PON1-192QQ(低活性)、QR(中活性)、RR(高活性)表型组别。QR与RR联合组成RC表型组。结果:运动组血脂水平和脂蛋白浓度均高于对照组。如果不考虑表型,运动组与对照组血清PON1、ssPON1、HDL亚类相关的ARE活性均无显著差异(p>0.05)。然而,运动组中QQ表型女性PON1活性显著高于对照组(p<0.01),而RC表现组与对照组无差异。PON1表型(QQ组与RC组)与锻炼情况(运动组与对照组)对PON1活性的作用间存在显著交互作用。结论:规律性的有氧运动方案可根据PON1-192表型、而非血脂水平或浓度提升土耳其中年女性的PON1活性。

关键词：有氧运动方案芳香肌酯酶血脂脂蛋白对氧磷酶 PON1-192表型女性