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microalgae cultivation in photobioreactors: sustainable solutions for a greener future

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

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Scale-up effect analysis and modeling of liquid-solid circulating fluidized bed risers using multigene genetic programming

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Particuology 2020年第5期18卷 57-66页

作者： Shaikh A.Razzak Saddam A.AI-Hammadi Syed m.Rahman mohammad R.Quddus mohammad m.hossain Jesse Zhu Department of Chemical Engineering King Fahd University of Petroleum&MineralsDhahran 31261Saudi Arabia Center for Environment&Water RIKing Fahd University of Petroleum&MineralsDhahran 31261Saudi Arabia Department of Chemical and Biochemical Engineering University of Western OntarioCanada

Understanding scale-up effects on the hydrodynamics of a liquid-solid circulating fluidized bed(LSCFB)unit requires both experimental and theoretical *** implement multigene genetic programming(mGGP)to investigate the solid holdup and distribution in three LSCFB systems with different *** addition to data obtained here,we also use a portion of data sets of LSCFB systems developed by Zheng(1999)and Liang et al.(1996).model predictions are in good agreement with the experimental data in both radial and axial directions and at different normalized superficial liquid and solid *** radial profiles of the solid holdup are approximately identical at a fixed average cross-sectional solid holdup for the three LSCFB systems *** performance indicators including the mean absolute percentage error(6.19%)and correlation coefficient(0.985)are within an acceptable *** results suggest that a mGGP modeling approach is suitable for predicting the solid holdup and distribution of a scaled-up LSCFB system.

关键词： Fluidization Liquid-solid circulating fluidized bed multigene genetic programming Scale-up effect Normalized superficial liquid velocity Solid holdup

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FARmER PARTICIPATORY RESEARCH ON BLAST mANAGEmENT: A CASE STUDY OF YUNNAN PROVINCE

FARMER PARTICIPATORY RESEARCH ON BLAST MANAGEMENT: A CASE ST...

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The ⅩⅤth International Plant Protection Congress

作者： I.mOLINA m.hossain H.LEUNG T.W mEW Social Sciences Division Entomology and Plant Pathology Division International Rice Research Institute （IRRI） DAPO Box 7777 Metro Manila The Philippines Social Sciences Division Plant Pathology Division International Rice Research Institute （IRRI） DAPO Box 7777 Metro Manila The Philippines Entomology and Plant Pathology Division International Rice Research Institute （IRRI） DAPO Box 7777 Metro Manila The Philippines Entomology and Plant Pathology Division International Rice Research Institute （IRRI） DAPO Box 7777 Metro Manila The Philippines

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有机铬对家禽代谢、胴体组成和禽蛋营养成分的影响

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国外畜牧学（饲料） 1999年第3期 36-37,43页

作者：陈勇 Sazzad m.hossain

铬是葡萄糖耐受因子(GTF)不可缺少的成分,具有调控动物食欲、维持正常血糖水平和蛋白质摄入的作用,此外,铬还有抗心脏病和糖尿病的作用(mertz,1993)。GTF的作用是促进胰岛素的生理功能(mertz等1974)。胰岛素是调节能量、脂肪代谢、蛋白... 详细信息

铬是葡萄糖耐受因子(GTF)不可缺少的成分,具有调控动物食欲、维持正常血糖水平和蛋白质摄入的作用,此外,铬还有抗心脏病和糖尿病的作用(mertz,1993)。GTF的作用是促进胰岛素的生理功能(mertz等1974)。胰岛素是调节能量、脂肪代谢、蛋白质沉积和胆固醇利用的重要激素。当细胞的胰岛素敏感性下降,细胞利用葡萄糖和氨基酸的能力受到影响。

关键词：家禽代谢胴体组成禽蛋营养成分

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超导磁轴承环锭纺纱工艺中纱线路径的数学建模

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国际纺织导报 2018年第3期46卷 28-28,30,31,32页

作者： m.hossain A.Abdkader C.Cherif 雷明德累斯顿工业大学纺织机械与高性能材料技术研究所(德国) 不详

在德国研究基金会(DFG)的资助下,成功研发出一种新型无摩擦超导磁轴承(SmB),可替代钢领/钢丝圈系统的加捻,具有能使现有的环锭纺纱工艺生产率翻倍的巨大潜力。该SmB系统已获得专利授权(DE 11 2012 000 596A5),将其安装在一台环锭纺纱测... 详细信息

在德国研究基金会(DFG)的资助下,成功研发出一种新型无摩擦超导磁轴承(SmB),可替代钢领/钢丝圈系统的加捻,具有能使现有的环锭纺纱工艺生产率翻倍的巨大潜力。该SmB系统已获得专利授权(DE 11 2012 000 596A5),将其安装在一台环锭纺纱测试仪上测试证实,该系统可以工作。集成型高性能SmB加捻元件对动态纱线路径及纺纱工艺有显著的影响,因此纱线的张力分布和气圈的几何形态与传统的纲领/钢丝圈系统有很大的不同。研究旨在就新集成的SmB系统建立动态纱线路径的数学模型,以阐明纺织技术上和物理上的基础原理知识。

关键词：超导磁轴承(SmB) 环锭纺纱纱线路径数学模型

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Enhancement of coercivity,permeability,and dielectric properties of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites for memory and high frequency devices

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Journal of Rare Earths 2024年第6期42卷 1128-1135,I0005页

作者： I.Sardar m.D.hossain m.S.Sikder m.N.I.Khan m.R.Rahman Physics Discipline Khulna UniversityKhulna9208Bangladesh Department of Physics Khulna University of Engineering&TechnologyKhulna9203Bangladesh Department ofComputer Science and Engineering Northern University of Business&Technology KhulnaKhulna9100Bangladesh material Science Division Atomic Energy CentreDhaka1000Bangladesh

Spinel cubic ferrites have huge applications in me mory and high frequency *** the improvement of these modern devices,the magnetic coercivity,permeability,and dielectric properties of a ferrite are the important *** article focuses on improving the magnetic coercivity,magnetic permeability,and dielectric properties of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ferrites,where x=0.00,0.06,and *** X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),field emission scanning electron microscopy(FESEm),energy dispersive X-ray(EDX),vibrating sample magnetometer(VSm),and an impedance analyzer were used to characterize the structural,magnetic,and dielectric properties of the *** XRD patterns indicate the formation of spinel cubic structure of the samples with a secondary peak(EuFeO_(3))for Eu doped *** densities and porosities of the samples follow an inverse trend,where the doped samples’lattice parameters are increased with the increment of rare earth Eu *** FTIR analysis also proves the spinel cubic phase of the *** average grain size of the ferrites is obtained via FESEm images,and it is increased from 121 to 198 *** analysis confirms that doping of the Eu content also changes other hysteresis loop properties of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ***,the coercivity of the Eu doped samples is greater than that of the mother alloy(x=0.00).The EDX study shows that there is no impurity contamination in the *** permeability and dielectric measurements show an improved quality factor of the Eu-doped samples with low magnetic and dielectric *** dependent resistivity and impedance analysis also show the improved *** the observed properties of the samples,all the investigated ferrites might be strong candidates for potential applications in memory devices,magnetic sensors,and high frequency applications.

关键词： Ferrites Raree arths Coercivity Permeability EDX Resistivity

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Predicting the Stitch Density of Finished Fabrics Using Weft Blended Grey Knit Fabrics

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Journal of Textile Science and Technology 2024年第3期10卷 51-63页

作者： Kazi md. Elias mohammad Obaidur Rahman H. m. Zakir hossain Department of Physics Jahangirnagar University Savar Bangladesh Jute Textile Wing Bangladesh Jute Research Institute Dhaka Bangladesh

Stitch density is one of the critical quality parameters of knit fabrics. This parameter is closely related to other physical quality parameters like fabric weight, fabric tightness factor, fiber types, blend ratio, yarn diameter and linear density, and fabric structure. Selecting stitch density (wales per inch, course per inch) is essential to getting the appropriate fabric weight and desired quality. Usually, no rules or assumptions exist to get the desired stitch density in the finished fabric stage. Fifteen types of blended knit fabrics were prepared to conduct the study. The varying percentages of cotton, polyester, and elastane are incorporated in the blends. Regression analysis and regression ANOVA tests were done to predict the stitch density of finished fabrics. A suitable regression equation is established to get the desired results. The study also found that the stitch density value in the finished stage fabric decreases by approximately 15% compared to the stitch density in the grey fabric stage. This study will help the fabric manufacturers get the finished fabric stitch density in advance by utilizing the grey fabric stitch density data set. The author expects this research to benefit the knitting and dyeing industry, new researchers, and advanced researchers.

关键词： Wales per Inch Course per Inch Stitch Density Blended Knit Fabric

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Beyond Stitches: Analysis of Disease Burden in a Bangladeshi RmG Factory

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Health 2024年第7期16卷 688-702页

作者： mariam Zaman Tayeb Ahmmed Nabila Binte hossain S. m. Raysul Haque Ariful Islam Joarder Kamran ul Baset Department of Procurement SM Group Dhaka Bangladesh Department of Neurosurgery Bangabandhu Sheikh Mujib Medical University (BSMMU) Dhaka Bangladesh Department of Public Health Independent University Bangladesh (IUB) Dhaka Bangladesh Department of Cardiology Bangabandhu Sheikh Mujib Medical University (BSMMU) Dhaka Bangladesh

Introduction: Bangladesh has experienced remarkable growth in RmG over the past 25 years. With the knitwear industry providing more than 4 million direct jobs, providing better occupational health and safety of workers remains a challenge. Aim of the study: The aim of the study was to analyze the disease burden of a RmG factory, and to highlight occupational health risks. methods: A cross-sectional study design was employed for this analysis. A 17-month data entry (January 2020 - may 2021) was gathered from the factory in-house clinic. The socio-demographic and clinical diagnosis entries of 8421 entries were analyzed. Result: The population of the factory workers is 5370, where 40% (2148) are female workers and 60% (3222) are male workers. The mean age of respondents is 30 years, with a SD of ±7 years. Among the chief complaints, the most common was vomiting (14%;2262) fever (14%;2247), runny nose (11%;1842), cough (9%;1465), and loose motion (8%;1364). In the diagnosis categories, gastrointestinal diseases were more predominantly diagnosed (35%;2978), followed by viral fever (21%;1772), neurological diseases (16.5%;1389) and musculoskeletal disorders (9%;768). The average cost of medicine for each respondent is BDT 36. The factory covered costs of all medication for 99% (8380) of respondents. Only 0.5% (37) was referred to a tertiary hospital for further evaluation. Conclusion: Garments workers suffer mostly from long-term occupational health hazards. Factory owners and policy makers can contribute in various ways to improving primary healthcare options for workers.

关键词： RmG Disease Burden Work Related Disease Communicable Disease Occupational Safety

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Impact of Action Observation Therapy along with Usual Physiotherapy Intervention of Individual with Alzheimer’s Disease

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Advances in Alzheimer's Disease 2024年第1期13卷 1-10页

作者： Zahid Bin Sultan Nahid Faruq Ahmed Tuhin Ahammed md Kutub Uddin md Sirazul Islam S m maruf hossain Sajib md Rafiqul Islam Department of Physiotherapy Saic College of Medical Science and Technology Mirpur Bangladesh Department of Physiotherapy Centre for the Rehabilitation of the Paralysed (CRP) Savar Bangladesh Department of Physiotherapy Centre for the Rehabilitation of the Paralysed (CRP) Mymensingh Bangladesh Department of Physiotherapy Centre for the Rehabilitation of the Paralysed (CRP) Mirpur Bangladesh Department of Physiotherapy State College of Health Sciences Dhaka Bangladesh

Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by cognitive impairments in the initial stage, which lead to severe cognitive dysfunction in the later stage. Action observation therapy (AOT) is a multisensory cognitive rehabilitation technique where the patient initially observes the actions and then tries to perform. The study aimed to examine the impact of AOT along with usual physiotherapy interventions to reduce depression, improve cognition and balance of a patient with AD. A 67 years old patient with AD was selected for this study because the patient has been suffering from depression, dementia, and physical dysfunction along with some other health conditions like diabetes and hypertension. Before starting intervention, a baseline assessment was done through the Beck Depression Inventory (BDI) tool, the mini-Cog Scale, and the Berg Balance Scale (BBS). The patient received 12 sessions of AOT along with usual physiotherapy interventions thrice a week for four weeks, which included 45 minutes of each session. After four weeks of intervention, the patient demonstrated significant improvement in depression, cognition, and balance, whereas the BDI score declined from moderate 21/63 to mild 15/63 level of depression. The mini-Cog score improved from 2/5 to 4/5, and the BBS score increased from 18/56 to 37/56. It is concluded that AOT along with usual physiotherapy intervention helps to reduce depression, improve cognition and balance of people with AD.

关键词： Alzheimer’s Disease Action Observation Therapy Physiotherapy Intervention

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Insights into the physical properties and anisotropic nature of ErPdBi with an appearance of low minimum thermal conductivity

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Chinese Physics B 2021年第1期30卷 398-406页

作者： S K mitro R majumder K m.hossain md Zahid Hasan md Emran hossain m A Hadi Bangamata Sheikh Fojilatunnesa mujib Science and Technology University Jamalpur-2012Bangladesh Physics Discipline Khulna UniversityKhulna-9208Bangladesh Department of materials Science and Engineering University of RajshahiRajshahi-6205Bangladesh Department of Electrical and Electronic Engineering International Islamic University ChittagongKumiraChittagong-4318Bangladesh Department of Physics University of RajshahiRajshahi6205Bangladesh

We theoretically study the structural, elastic and optical properties of Er Pd Bi together with its anisotropic behaviors using density functional theory. It is observed that Er Pd Bi satisfies the Born stability criteria nicely and possesses high quality of machinability. The anisotropic behavior of Er Pd Bi is reported with the help of theoretical anisotropy indices incorporating 3 D graphical presentation, which suggests that Er Pd Bi is highly anisotropic in nature. It is noticed that the minimum thermal conductivity is very low for Er Pd Bi compared to the several species. This low value of minimum thermal conductivity introduces the potentiality of Er Pd Bi in high-temperature applications such as thermal barrier *** addition, deep optical insights of Er Pd Bi reveal that our material can be used in different optoelectronic and electronic device applications ranging from organic light-emitting diodes, solar panel efficiency, waveguides etc. to integration of integrated circuits. Therefore, we believe that our results will provide a new insight into high-temperature applications and will benefit for the development of promising optoelectric devices as well.

关键词： Er Pd Bi minimum thermal conductivity anisotropy density functional theory(DFT)

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