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Open Journal of Modelling and Simulation 2022年第4期10卷 417-427页

作者： Md. shariful islam Touhid Hossain mir shariful islam Department of Mathematics University of Dhaka Dhaka Bangladesh Mechanical Engineering Department Kyushu University Fukuoka Japan International Institute for Carbon-Neutral Energy Research Kyushu University Fukuoka Japan Department of Oceanography University of Dhaka Dhaka Bangladesh

The objective of this study is to analyze a chemostat model of very simple type with the Haldane expression of growth rate and a variable yield coefficient. The proposed modified model is analyzed qualitatively and quantitatively. Analytic conditions for stability and optimality are determined for washout and no washout equilibrium solutions. One of the main focuses of the study is to determine parameter values for which Hopf Bifurcations occur in a bioreactor. It has been shown that the maximum stable non-washout equilibrium exits at a residence time under suitable parameter values. Hopf bifurcation is observed at three different conditions of the parameters.

关键词： Chemostat Residence Time Hopf Bifurcation Bioreactor Growth Rate Haldane Model Yield Coefficient

Effect of Different Mulch Materials on Yield and Nutrition Profile of Common Capsicum (Capsicum annuum) Cultivars in Bangladesh

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Agricultural Sciences 2024年第2期15卷 246-255页

作者： Prince Biswas Md. Abubakar Siddik Md. shariful islam Mohammad Zahir Ullah Md. Shamsuzzoha Hasina Akter Akm Maksudul Alam Mominul Hauque Robin Nutrition Analysis Division Bangladesh Institute of Research and Training on Applied Nutrition Araihazar Bangladesh Department of Crop Botany Faculty of Agriculture Habiganj Agricultural University Habiganj Bangladesh Field Crop Division Bangladesh Institute of Research and Training on Applied Nutrition Araihazar Bangladesh Medicine Crop Wing Bangladesh Institute of Research and Training on Applied Nutrition Araihazar Bangladesh Department of Statistics University of Dhaka Dhaka Bangladesh Department of Agricultural Extension Upazila Agriculture Office Habiganj Bangladesh Department of Agricultural Chemistry Sher-e-Bangla Agricultural University Dhaka Bangladesh

Capsicum is a nutritious vegetable and its cultivation in farms is getting popular in Bangladesh. Although many efforts have lain to explore better yielding and nutritionally rich cultivars with suitable modern cultivation techniques but still have to find the desired outcome. Thus, it’s necessary to conduct further research to identify the high-yielding and nutritious capsicum cultivars in Bangladesh. An experiment was conducted from July 2021 to June 2022 at the Bangladesh Institute of Research and Training on Applied Nutrition (BIRTAN) research field with three cultivars of capsicum: B0 = California Wonder, B1 = BARI Misti Morich-1 and B2 = BARI Misti Morich-2 and three mulching: T0 = No mulching, T1 = Water hyacinth, T2 = Poly Mulching in randomized complete block design with three replications to identify better quality capsicum cultivar and suitable mulching material. Among cultivars the BARI Misti Morich-2 (B2) showed increased agronomic parameters like number of branches and effective branches per plant, leaves length and width, consequently yield and yield contributing traits were also enhanced like fruits per plant, fruit length, fruit diameter and yield per plant (25.97%, 4.54%, 3.64% and 21.43%, respectively). Poly Mulching (T2) increased agronomic traits, yield traits and yield (0.61 kg) than BARI Misti Morich-1 (T1). The combined effect of B2T2 increased the number of branches per plant, effective branches per plant, leaves length and breadth by 40%, 90%, 15.57% and 26.22%, respectively, hence resulting in an increased yield of 20%. BARI Misti Morich-2 cultivar showed an increase in Fe, Zn and Vitamin-C content of 26.24% and 23.10%, 8.82% and 5.14%, and 6.03% and 5.74% than B0 and B1 cultivars, respectively. Therefore, BARI Misti Morich-2 exhibited the improved agronomic, yield and nutritional traits of capsicum under poly mulching a

关键词： Capsicum Cultivars Mulch Materials Yield Yield Contributing Traits Nutritional Quality

Effect of Trimetazidine on Functional Capacity in Patient with Ischaemic Cardiomyopathy (TOFCAPI)

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International Journal of Clinical Medicine 2024年第2期15卷 55-67页

作者： Mohsin Ahmed Golam Morshed Mahmood Hasan Khan Md. Arifur Rahman Muhammed Aminur Razzaque shariful islam Sayeedur Rahman Khan Chowdhury Md. Kudrat-E-Khuda Salahuddin Anis Shiblee Md. Habibur Rahman Department of Cardiology National Institute of Cardiovascular Diseases Dhaka Bangladesh Department of Cardiology Government Employee’s Hospital Dhaka Bangladesh Department of Cardiology Delta Hospital Ltd. Dhaka Bangladesh IPDI Foundation Dhaka Bangladesh

Objective: This study aimed to evaluate the efficacy of trimetazidine on exercise capacity via a six-minute walk test in patients with ischaemic cardiomyopathy and also evaluate the effect of trimetazidine on left ventricular function via echocardiography in the same population. Methods: This prospective observational study, conducted at the National Institute of Cardiovascular Diseases in Dhaka, Bangladesh, enrolled 200 patients with ischaemic cardiomyopathy and a depressed left ventricular ejection fraction (LVEF Results: In this study (n = 200) of ischaemic cardiomyopathy patients, the mean age was 58 years, with 76% of the patients being male. All study subjects received GDMT (Guideline-Directed Medical Therapy) for angina and heart failure. Those who received the modified released form of trimetazidine developed lesions during the 1st and 2nd follow-ups, during which the LVEF, LVIDd, and six-minute walk distance significantly improved (p Conclusion: The findings of the present study demonstrated that the addition of modified-release trimetazidine to GDMT can improve exercise capacity and left ventricular function in patients with ischaemic cardiomyopathy.

关键词： Bangladesh Heart Failure Exercise Capacity Trimetazidine Ischaemic Cardiomyopathy

Erosion and runoff reduction potential of vetiver grass for hill slopes:A physical model study

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International Journal of Sediment Research 2023年第1期38卷 49-65页

作者： Shamontee Aziz Mohammad shariful islam BUET-Japan Institute of Disaster Prevention and Urban Safety (BUET-JIDPUS) Bangladesh University of Engineering and Technology (BUET) Department of Civil Engineering Bangladesh University of Engineering and Technology (BUET)

Severe erosion is caused by intense rainfall in tropical regions. The erodible soil of steep hill slopes,accompanied by destruction of vegetation due to human interventions results in accelerated erosion. A sustainable and cost-effective solution such as vetiver grass(Chrysopogon zizanioides) is, thus, required to control the erosion process. In the current study, 6 small-scale glass models: 1 bare and 5 with vetiver grass, having a slope angle of 37°have been constructed. One year after planting, artificial rainfall of extremely high intensity was applied to all 6 small models and the role of vetiver canopy and roots in erosion and runoff control was observed. To see the effect of soil texture, one among these 5 models was made with silty sand and others contained sandy silt. The results demonstrated that, for sandy silt, the inclusion of vetiver reduced the soil loss by 94%-97%, and soil detachment rates were lowered by 95%.The average runoff also was reduced by 21%. The canopy cover showed a positive impact on reducing both quantities. An increase in average root diameter from 1.6 to 2.5 mm increases the soil loss due to its negative impact on added cohesion. The added cohesion showed a linearly negative correlation with soil loss. A composite system of vetiver and jute geotextile was most effective in erosion reduction among 4vegetated models with sandy silt. Under same vetiver planting layout, the grass covered model of silty sand yielded 84% lower erosion and 62.5% lower runoff than the grass covered one with sandy silt. Thus,vetiver was more effective in erosion and runoff reduction for soil with a greater percentage of sand, and soil type dominated the erosion process.

关键词： Erosion Small-scale model experiments Surface runoff Artificial rainfall Vetiver

Power generation expansion planning approach considering carbon emission constraints

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Global Energy Interconnection 2023年第2期6卷 127-140页

作者： Hasan Mehedi Xiaobin Wang Shilong Ye Guiting Xue islam Md shariful Fang Shi School of Electrical Engineering Shandong UniversityJinan 250061P.R.China College of Letter and Science University of California DavisCaliforniaUSA95618 School of Economics Shandong UniversityJinan 250100P.R.China Haidian Electric Power Supply Company of State Grid Beijing Electric Power Company Beijing 100000P.R.China

Decarbonization of the power sector in China is an essential aspect of the energy transition process to achieve carbon *** power sector accounts for approximately 40%of China’s total CO_(2) ***,collaborative optimization in power generation expansion planning(GEP)simultaneously considering economic,environmental,and technological concerns as carbon emissions is *** paper proposes a collaborative mixedinteger linear programming optimization approach for *** minimizes the power system’s operating cost to resolve emission concerns considering energy development strategies,flexible generation,and resource limitations *** research further analyzes the advantages and disadvantages of current GEP *** show that the main determinants of new investment decisions are carbon emissions,reserve margins,resource availability,fuel consumption,and fuel *** proposed optimization method is simulated and validated based on China’s power system ***,this study provides policy recommendations on the flexible management of traditional power sources,the market-oriented mechanism of new energy sources,and the integration of new technology to support the attainment of carbon-neutral targets in the current energy transition process.

关键词： Low-carbon Optimization Generation expansion planning Long-term planning Renewable energy

Impact of Nitrogen, Phosphorus and Potassium on Brown Planthopper and Tolerance of Its Host Rice Plants

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Rice science 2016年第3期23卷 119-131页

作者： Md Mamunur RASHID Mahbuba JAHAN Khandakar shariful islam Plant Physiology Division Bangladesh Rice Research Institute Department of Entomology Bangladesh Agricultural University

The brown planthopper(BPH),Nilaparvata lugens(St?l),appeared as a devastating pest of rice in Asia. Experiments were conducted to study the effects of three nutrients,nitrogen(N),phosphorus(P) and potassium(K),on BPH and its host rice plants. Biochemical constituents of BPH and rice plants with varying nutrient levels at different growth stages,and changes in relative water content(RWC) of rice plants were determined in the laboratory. Feeding of BPH and the tolerance of rice plants to BPH with different nutrient levels were determined in the nethouse. Concentrations of N and P were found much higher in the BPH body than in its host rice plants,and this elemental mismatch is an inherent constraint on meeting nutritional requirements of BPH. Nitrogen was found as a more limiting element for BPH than other nutrients in rice plants. Application of N fertilizers to the rice plants increased the N concentrations both in rice plants and BPH while application of P and K fertilizers increased their concentrations in plant tissues only but not in BPH. Nitrogen application also increased the level of soluble proteins and decreased silicon content in rice plants,which resulted in increased feeding of BPH with sharp reduction of RWC in rice plants ultimately caused susceptible to the pest. P fertilization increased the concentration of P in rice plant tissues but not changed N,K,Si,free sugar and soluble protein contents,which indicated little importance of P to the feeding of BPH and tolerance of plant against BPH. K fertilization increased K content but reduced N,Si,free sugar and soluble protein contents in the plant tissues which resulted in the minimum reduction of RWC in rice plants after BPH feeding,thereby contributed to higher tolerance of rice plants to brown planthopper.

关键词： Nilaparvata lugens relative water content host tolerance nitrogen phosphorus potassium rice nutrient subsidy

比较肿瘤患者使用TIVAP和PICC的不良事件率和费用的Meta分析

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比较肿瘤患者使用TIVAP和PICC的不良事件率和费用的Meta分析

作者： Md.shariful islam（许和平）中南大学

学位级别：硕士

背景:植入式输液港装置(Totally Implantable Venous Access Port,TIVAP)和外周植入式中心静脉导管(Peripherally Inserted Central Catheters,PICC)是在接受化疗或完全肠外营养的肿瘤患者中应用最广泛的两种中心静脉通路。TIVAP的使用寿命比PICC长,而PICC的初期费用比TIVAP低。然而如今并没有很好的指南可以供临床医生在患者中以最低的成本安全地使用它们。因此,比较TIVAP和PICC在肿瘤患者中使用的并发症和费用差异,以及各自的优缺点,包括使用期间或使用后所导致的线路闭塞、感染、导管相关血栓、渗出、静脉炎、错位和意外取出率等,这可以使临床医师为患者做出更好的决策提供依据。医生通过熟悉它们的使用方法、相关并发症、以及并发症的诊断和管理,可以更确保患者的安全以及减轻患者的额外经济负担。方法:我们严格按照cochrane系统评价及Meta分析操作指南的要求,通过检索美国国立医学图书馆(The United States National Library of Medicine,NLM)、澳大利亚循证护理合作中心(Joanna Briggs Institute,JBI)、Cochrane图书馆、美国科学网(Web of Science)、CINAHL数据库、中国生物医学文献数据库(China Biology Medicine disc,CBM)、中国知网(China National Knowledge Infrastructure,CNKI)、谷歌学术(Google Scholars)等数据库,全面的搜索出在癌症患者中应用TIVAP和PICC的相关回顾性研究的英文文献;然后采用病例对照研究质量评估标准表(Newcastle-ottawa quality assessment scale,NOS评分量表),对每一篇病例对照研究的病例组和对照组的病例从病例选择、可比性、暴露等三个维度进行分层评估,满分9分;接着提取其中的每个病例的导管寿命、导管相关并发症如:导管闭塞、导管引起的感染、导管位置不正、导管相关血栓、导管存留导致的过敏、导管滞留引起的疼痛以及导管的使用期间的总费用,其中费用还分为6个月的费用和12个月的费用情况等相关数据。两名审查员共同完成筛选、试验选择、质量评估、数据提取等工作,当遇到有分歧时,通过共同讨论,得出一致性结果,从而确定最终的评分及纳入文章。得到的数据采用STATA10软件进行Meta分析,比值比(Odds Ratio,OR)值及95%置信区间(Confidence Interval,CI)用于评估二分类变量,其中OR值=1意味着两组发生率相等、两发生率无统计学意义,OR值的森林图的无效竖线在横坐标=1处。标准均值差(Standardized Mean Difference,SMD)用于计算连续性变量如导管寿命和导管相关总花费,是试验组的均数减去对照组均数的差,SMD=0代表了两组的均数无统计学意义,故SMD的森林图的无效竖线在横坐标=0处。I检验用于对试验各组间的差异进行异质性检验,当I50%为高度异质性检验,当异质性I小于50%时,我们采用固定效应模型,当异质性较大,I大于50%时,采用随机效应模型。结果:1.在我们的结果中,我们共纳入病例对照研究8篇,均为英文文献,共1316名患者被纳入研究。文献质量NOS评分均≥6分。***分析结果显示,置管相关数据中,4项研究比较了TIVAP组与PICC组的意外移除率,首先对这4项研究进行异质性检验(I0.05),显示无明显统计学差异。4项研究比较了TIVAP组与PICC组的导管寿命,首先对这4项研究进行异质性检验(I>50%),研究间存在着较为明显的异质性,故采用随机效应模型。TIVAP组的寿命与PICC组的寿命相比,结果为(SMD:1.742,95%CI,0.935-2.548,P<0.05),提示两组间的寿命无明显统计学差异。3.对于导管并发症相关数据的研究结果提示:有4项研究比较了TIVAP组与PICC组的导管闭塞事件,首先对这4项研究进行异质性检验(I<25%),研究间无明显异质性,遂采取固定效应模型。TIVAP组与PICC组的闭塞事件相比,结果为(OR:0.11,95%CI,0.03-0.38,P<0.05),有统计学差异,显示TIVAP组的闭塞发生率明显低于PICC组。有7项研究比较了TIVAP组与PICC组的导管相关感染,首先对这7项研究进行异

关键词：外周植入式中心静脉导管植入式输液港装置并发症导管寿命维护费用

Dynamics of an autonomous food chain model and existence of global attractor of the associated non-autonomous system

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International Journal of Biomathematics 2019年第8期12卷 1-31页

作者： Jyotirmoy Roy shariful Alam Department of Mathematics Indian Institute of Engineering Science and Technology Shibpur B.GardenHowrah-711103India

In this paper,we have analyzed a tri-trophic food chain model consisting of phytoplankton,zooplankton and fish population in an aquatic ***,the pelagic water column is divided into two layers namely,the upper layer and the lower *** zooplankton population makes a diel vertical migration(DVM)from lower portion to upper portion and vice-versa to trade-off between food source and fear from predator(Fish).Here,mathematical model has been developed and analyzed in a rigorous *** from routine calculations like boundedness and positivity of the solution,local stability of the equilibrium points,we performed Hopf bifurcation analysis of the interior equilibrium point of our model system in a systematic *** is observed that the migratory behavior of zooplankton plays a crucial role in the dynamics of the model *** the upward and downward migration rates of DVM leads the system into Hopf *** upward migration rate of zooplankton deteriorates the stable coexistence of all the species in the system,whereas the downward migration rate enhance the stability of the ***,we analyze the non-autonomous version of the system to capture seasonal effect of environmental *** have shown that under certain parametric restrictions periodic coexistence of all the species of our system is ***,extensive numerical simulation has been performed to support our analytical findings.

关键词： Food chain model DVM Hopf bifurcation limit cycle periodic solution global attractor

Leonurus sibiricus L.(honeyweed):A review of its phytochemistry and pharmacology

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Asian Pacific Journal of Tropical Biomedicine 2016年第12期6卷 1076-1080页

作者： Abu Sayed AshraM Alam shariful islam Taif Ali Emdad Ullah Abu Zaffar Shibly Aslam Ali Mahdi Hasan-Olive The United Graduate School of Agricultural Sciences Iwate University Department of Biochemistry and Molecular Biology Hajee Mohammad Danesh Science and Technology University Faculty of Engineering Iwate University Department of Biotechnology and Genetic Engineering Faculty of Life ScienceMawlana Bhashani Science and Technology University Department of Biochemistry and Molecular Biology University of Dhaka Key Laboratory of Dairy Science College of Food ScienceNortheast Agricultural University Department of Biomedicine University of Bergen

Leonurus sibiricus is a herbaceous plant found in many countries in Asia and *** plant is widely practiced as a remedy for the treatment of diabetes,menstrual irregularities,and *** approval of therapeutic implications of any drugs depends on the well characterized mode of actions of the *** bioactive compounds like diterpenes,triterpenes,flavonoids and phenolic acids in Leonurus sibiricus show analgesic,anti-inflammatory,anti-oxidant,anti-atherogenic and antihemorrhagic,anti-diabetic,anti-bacterial and allelopathic ***,the expression level of some genes is altered by the crude extract treatments,which are effective against cancers,diabetes and cardiovascular diseases where the molecular mechanisms are yet to be ***,the extracts significantly induce nitric oxide production by endothelial nitric oxide synthase,a signaling molecule of vasodilation in combination with interferon-y indicating positive effect on *** investigations are required to unlock the effects of bioactive compounds found in extracts at clinical settings.

关键词： Allelopathy Antidiabetic Antioxidant Cardiovascular disease Leonurus sibiricus

Unmet needs for mental care services for older people in Bangladesh during the COVID-19 pandemic

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General Psychiatry 2020年第6期33卷 426-428页

作者： Md Sazedur Rahman Md Ashfikur Rahman Laila Afroze Sheikh Mohammed shariful islam Statistics Discipline Khulna UniversityKhulnaBangladesh Development Studies Discipline Khulna UniversityKhulnaBangladesh Institute for Physical Activity and Nutrition School of Exercise and Nutrition SciencesFaculty of HealthDeakin UniversityBurwoodVictoriaAustralia

Dear Editor We read with interest the editorial by Qiu et at about the psychological distress among the general population in China during the COVID-19 pandemic and policy *** elderly are more vulnerable to increased mental health problems during COVID-19,which has raised significant challenges for community mental health services.12 Older people with comorbid conditions,including cardiovascular diseases,lung diseases,diabetes and hypertension are more likely to be severely affected and die because of COVID-19,which is caused by SARS-CoV-2.^(3).

关键词： distress lung services