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Protective Roles of Some Leafy and Non-leafy Vegetables against the Severity of Arsenic-induced Skin Lesions among Women Living in Rural Bangladesh:A Case Control Study

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Journal of Botanical Research 2022年第1期4卷 1-12页

作者： Shayla nasrin Mahbuba Kawser Selim Ahmed Anup Kumar Saha Anamul Haque Rufaida Rahman Akhi Akter Sheikh Nazrul Islam Institute of Nutrition and Food Science University of DhakaDhaka1000Bangladesh Institute of child and mother health(ICMH) MatuailDhaka1362Bangladesh School of Medicine University Malaysia SabahKotakinabalu SabahMalaysia

Arsenicosis is common among villagers as they drink more contaminated-water since the arsenic-crisis in *** of vitamins and micronutrients in counteracting arsenic toxicity has been proved for arsenic *** study was intended to assess protective and beneficial roles of some commonly eaten vegetables on the development and severity of arsenic-induced skin lesions.A case-control study among(N=122)adult rural-women(62 cases had various forms of arsenical skin-lesions ***/keratosis/mixed-lesions and 60 sex-age-matched healthy-controls)was conducted in Shaharstee Upazilla of Chandpur district,***-demographic data recorded in a pre-tested-questionnaire,‘per-day vegetables ingestion’of cases and controls were measured qualitative and quantitatively(24-hour recall-methods,food-frequency/week and food history-record/week).Multiple logistic regression/MLR analyses were performed to find out protective roles of some dietary leafy-vegetables/LVs and non-leafy vegetables/NLVs on arsenicosis and their influences on the degree of severity of arsenicosis also *** from taking some LVs/NLVs among cases than controls is associated with increased risk for arsenicosis(P<0.05).Amongst all most-frequently eaten vegetables(n=17)per day Momordica diocia has the highest skin protective role on arsenicosis[Adjusted odds ratio/AOR 8.2,95%CI(2.11-31.9),P=<0.01],followed by Ipomoea acquatica(AOR:7.3),Basella alba(AOR:6.2),Solanum tuberosum(AOR:4.0),Vigna unguiculata sesquipedalis(AOR:3.2),Trichosanthes anguina(AOR:1.2)and Abelmoschus esculentus(AOR:1.2).Moreover,severe skin lesion was observed as compared to non-severe cases(mild/moderate)for less intake frequencies of *** study outlined that commonly eaten vegetables have protective and beneficial roles on arsenic-induced skin *** samples longitudinal study of this important field of therapeutic-intervention is warranted.

关键词： Arsenic Bangladesh Leafy vegetables Non-leafy vegetables Skin lesion Severity

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Natural fiber reinforced polymer composites: history, types, advantages and applications

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Materials Engineering Research 2019年第2期1卷 69-85页

作者： Kamrun N. Keya nasrin A. Kona Farjana A. Koly Kazi Madina Maraz Md. Naimul Islam Ruhul A. Khan Polymer Composite Laboratory Institute of Radiation and Polymer Technology Bangladesh Atomic Energy Commission Dhaka 1000 Bangladesh

Nowadays, the use of natural fiber reinforced polymer-based composites is gradually increasing day by day for their many advantages for civil engineering construction applications. Due to their many advantages for polymer-based composite materials are widely used in civil construction, automobiles, aerospace, and many others. Natural fibers such as jute, kenaf, pineapple, sugarcane, hemp, oil palm, flax, and leaf, etc. are cheap, environmentally friendly, renewable, completely and partially biodegradable which can be utilized to obtain new high-performance polymer materials. These composites are having satisfactory mechanical properties (i.e. tensile properties, flexural stress-strain behavior, fracture toughness, and fracture strength) which make them more attractive than other composites. Due to easy availability and renewability, natural fibers can be used as an alternative of synthetic fibers as a reinforcing agent. The aim of this paper is to review different natural fibers reinforced based polymer composites with mechanical characterization, applications, also shows the opportunities, challenges and future demand of natural composite material towards civil applications.

关键词： natural fiber mechanical properties polymer composites

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Mechanical, thermal and interfacial properties of Carbon-Kevlar reinforced epoxy composite

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Materials Engineering Research 2019年第2期1卷 56-63页

作者： Milon Hossain Kamrun N. Keya nasrin A. Kona Naimul Islam Farjana A. Koly Mubarak A. Khan Abu Bakar Siddiquee Jumana Mahmud Ruhul A. Khan Institute of Radiation and Polymer Technology Bangladesh Atomic Energy Commission Dhaka 1000 Bangladesh. Department of Textile Engineering Khulna University of Engineering & Technology Khulna 9203 Bangladesh Department of Textile Engineering Mawlana Bhashani Science and Technology University Tangail 1902 Bangladesh

Twill woven Carbon-Kevlar (CK) fabric was reinforced in epoxy matrix by conventional hand lay-up process. The fabric weight fraction in the composites was kept around 58% and stacking sequence was varied from single to five plies. Tensile test was performed and the fracture surface after tensile test was evaluated by scanning electron microscope (SEM). The test result revealed that the tensile properties are strongly dependent on the number of plies. Three point flexural test of the composite was also carried and an increasing trend was observed. Maximum impact energy was recorded for CK3 sample by 202.7 KJ/m2. Thermal stability of the composite was studied via the thermo gravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FT-IR) result show interaction between fiber and matrix material. Finally, CK fabric reinforced epoxy-based composites showed balanced and tailor-able mechanical properties by varying the number of plies, suitable for desired applications in many areas including building, construction, marine, automotive etc.

关键词： Carbon-Kevlar fabric epoxy polymer composites mechanical properties thermal properties

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Unusual Presentation of a Large Multi-Septated Cystic Hygroma: A Case Report and Comprehensive Literature Review

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Surgical Science（外科学） 2023年第7期

作者： Md. Abir Tazim Chowdhury Sohail Ahmed Md. Zulfiqur Haider Niaz Ahmed A. K. M. Fazlul Haque nasrin Aktar Arup Khan Md. Abdullah-Al-Mahammud Kabir Md. Sifat Uddin Abrar Bin Ahsan Trishna Sarker Md. Khaled Hossain Munama Magdum

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