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Advances in Bioscience and Biotechnology 2017年第12期8卷 478-490页

作者： Obioma Kenechukwu Agwa Ifeyinwa Geraldine Nwosu Gideon Orkwagh abu Department of Microbiology University of Port Harcourt Port Harcourt Nigeria

The feasibility of nutrient uptake by Chlorella vulgaris using a cheap carbon source such as plantain peel extract was studied and its biomass utilized for bioethanol production. Unripe plantain peels were obtained, processed, infused for 48 hrs, extracted and cultivated with the Chlorella species for a period of fourteen days. The microalgal carbohydrate content was hydrolyzed with acid and enzyme while the hydrolysate fermented with 10% concentration of Saccharomyces sp. and Aspergillus sp. at 30°C and pH 4.5 using Separate Hydrolysis and Fermentation (SHF) and Separate Hydrolysis and Co-culture Fermentation (SHCF) methods. Results show that maximum cell growth of 1.56 (OD) and biomass concentration of 19 g/l were obtained with 48 hrs infusion. The result indicated that C. vulgaris utilized PPE medium as a sole carbon substrate and stimulated the secretion of biomass. The highest reducing sugar of 0.63 mg/ml was obtained after hydrolysis of the biomass, while the ethanol production yield of 0.33 g/l was obtained after fermentation. The ethanol production yield increased with the increase in fermentation time, while the reducing sugar was reduced after five days of fermentation. The highest ethanol percentage of 10.82% v/v was obtained from the distillate. This study showed that plantain peel can be utilized by C. vulgaris which provides a feasible route of reducing production cost of bioethanol from a cheap carbon substrate for biomass and bioenergy production.

关键词： Bioethanol Chlorella vulgaris Fermentation Hydrolysis Plantain Peel

Development of a zoning management plan for petra archaeological park (PAP), Jordan

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Natural Science 2011年第12期3卷 1040-1049页

作者： Said Damhoureyeh Ahmad Disi Ibrahim Al-Khader Mohammed H. abu-Dieyeh 不详

As Petra is increasingly becoming a major tourism destination in Jordan, this underlies not only challenges to conserve the habitats and species in Petra but also offers great opportunities to promote academic research and investigation, demonstrate sustainable development and initiation of environmentally sound development and nature based tourism. This investigation is based on both desktop studies and field missions. The desktop part is relied on reviewing various studies and reports that highlighting natural resources in the area. Two field missions were conducted aiming to document various information from related authorities and institutions operating in Petra and also to undertake ground truthing of habitats and species information. The missions also included interviews with Park staff, representatives from ongoing projects and initiatives in Petra (Seyaha-USAID) and many locals belonging to various tribes in Wadi musa and The Bdul. The study presents a synthesis to findings from these studies and visits. Broadly, the park can be zoned into three mega zones: 1) Wadi Arabah and the steep gorges to the west including the Artemisia and annual grasses steppe to the west, 2) Mountainous ridges and rocky slopes of the Mediterranean region located almost centrally in the park and at the southern limit and part of the eastern borders and 3) Central basin and steep limestone scarps and weathered sandstone. Based on lists of key and indicator species, some key/sensitive sites of conservation value have been suggested. Aspects of grazing, agricultural activities, tourism and water resources and their implications on management schemes have been discussed.

关键词： Archaeological Park Ecotourism Biodiversity Environmental Management Petra Jordan

Physical and Mechanical Properties of Ceramic-Based Recycled Paper-Cullet-Clay

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材料科学与工程（中英文版） 2011年第4期5卷 447-450页

作者： md Rahim Bin Sahar Khamisah Binti abu Samah Advanced Optical Material Research Group Department of Physics Faculty of Science Universiti Teknologi Malaysia Skudai81310 Johor Malaysia

A series of ceramic based on (x) recycle paper - (80-x) cullet–20 Kaolin clay (where 10 ≤ x ≤45wt%) has successfully been made by slip casting technique followed by sintering at 1000 °C. The ceramic density has been determined using Archimedes method while their hardness has been tested using Vickers hardness test method. The Young Modulus of the sample has also been determined using Universal Testing Machine and the existence of major phase in incinerate recycle paper has been determined by Energy dispersive analysis of X-ray (EDAX). It is found that the sample density is around 2.17 gcm-3 to 2.42 gcm-3 while their hardness are in the range of 144.2 MPa to 541.3 MPa, increases with the increased of cullet content. The Young Modulus is observed to be about 195.4 MPa to 603.4 MPa and is very much depend on the cullet content, while the EDAX shows that the major phase of the incinerated recycle paper contained around 56% of SiO2, 31% Al2O3 and 10% CaO depending on the composition.

关键词： Recycle paper glass cullet kaolin clay mechanical properties

Permutation Algebra for Constructing Reversible Circuits

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海扇壳源性碳酸钙纳米微粒对大鼠的急性毒性作用

Journal of Quantum Information Science（量子信息科学期刊） 2012年第3期

作者： Shah Mohammad Bahauddin abu Ashik md. Irfan

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吉林大学学报（医学版） 2019年第3期45卷 524-530,I0003页

作者：邵春燕付文亮 md Zuki Bin abu Bakar ZAKARIA 中国人民解放军联勤保障部队第九八一医院口腔科河北承德067000 承德医学院人体解剖学教研室河北承德067000 博特拉大学兽医学院解剖教研室雪兰莪州沙登43400

目的:观察海扇壳源性碳酸钙纳米微粒(CCNPs)对SD大鼠的毒性作用,初步探讨CCNPs的安全剂量和生物学效应。方法:将40只健康雄性SD大鼠随机分为对照组,低、中和高剂量CCNPs组(分别给予剂量0、30、60和120mg·kg^-1 CCNPs),每组10只大鼠。... 详细信息

目的:观察海扇壳源性碳酸钙纳米微粒(CCNPs)对SD大鼠的毒性作用,初步探讨CCNPs的安全剂量和生物学效应。方法:将40只健康雄性SD大鼠随机分为对照组,低、中和高剂量CCNPs组(分别给予剂量0、30、60和120mg·kg^-1 CCNPs),每组10只大鼠。尾静脉注射给药每天1次,连续14d。检测各组大鼠体质量和日平均进摄食量、血液学指标、血清生化指标、器官相对质量及主要器官的组织病理形态表现。结果:在14d重复剂量的毒性试验中,高剂量组中有2只大鼠死亡,而在低和中剂量组中均未发现有大鼠死亡。各剂量CCNPs组大鼠体质量增加幅度和日平均进食量低于对照组,但差异无统计学意义(P>0.05)。各剂量CCNPs组大鼠血清学指标与对照组比较差异无统计学意义(P>0.05)。各剂量CCNPs组大鼠肺脏相对质量高于对照组(P<0.05);低和中剂量CCNPs组大鼠脾脏相对质量高于对照组(P<0.05);高剂量CCNPs组大鼠脾脏相对质量与对照组比较差异无统计学意义(P<0.05)。低剂量CCNPS组大鼠部分脏器呈轻度的炎性浸润,未发现明显的病理学改变;中和高剂量CCNPs组大鼠主要脏器呈明显的组织病理学改变,包括炎性细胞浸润,肝细胞排列轻度紊乱,肝细胞空泡增多,肺泡间质增厚及大量肉芽肿形成,心肌纤维肿胀、断裂甚至坏死,肾小球出现萎缩和裂隙等。结论:小剂量CCNPs静脉给药不会引起大鼠严重的急性毒性反应。

关键词：碳酸钙纳米微粒载药体系毒性海扇壳

Associations of autoantibodies and clinical profile of the patients with systemic sclerosis

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Rheumatology & Autoimmunity 2022年第3期2卷 141-149页

作者： Shahin Mahmud Minhaj R.Choudhury Iftekhar H.Bandhan md.Sahidul Islam mdabu Shahin Syed A.Haq Mohammad M.Zaman Department of Clinical Neurology National Institute of Neurosciences and HospitalAgargaonDhakaBangladesh Department of Rheumatology Bangabandhu Sheikh Mujib Medical UniversityDhakaBangladesh Data Management World Health OrganizationDhakaBangladesh Research and Publication World Health OrganizationDhakaBangladesh

Background:Systemic sclerosis is characterized by the involvement of organs and the presence of specific *** objectives of this study were to identify the autoantibodies and to determine their association with the selected clinical features of the disease among Bangladeshi systemic sclerosis ***:This cross-sectional study was performed at the rheumatology outpatient clinic of Bangabandhu Sheikh Mujib Medical *** against nine systemic sclerosis-specific antigens were tested using an enzyme-linked immunoassay immunoblot *** clinical features of patients with positive and negative autoantibody were examined by χ^(2) or Fisher's exact ***:A total of 71 patients with systemic sclerosis(66;93.0%female)were *** mean age at disease onset was 33.2 ***-seven(80.3%)patients had diffuse cutaneous *** of nine autoantibodies,four were positive,anti-topoisomerase-I(57.7%),anti-U1 ribonucleic protein(21.1%),anti-RNA polymerase Ⅲ(18.3%),and anticentromere antibodies(4.2%).Eleven(15.5%)patients were negative for any antibodies and 11 patients were positive for at least two ***-U3-RNP,anti-PMScl,anti-Ku,and anti-Th/To auto antibodies were absent in all ***-RNA polymerase III was associated with raised pulmonary arterial systolic pressure(PASP)and anti-U1-RNP with decreased forced vital capacity(FVC).Conclusions:Anti-topoisomerase-I was the commonest autoantibody in patients with systemic sclerosis in ***-RNA polymerase III antibody had significant association with raised PASP and anti-U1-RNP with decreased FVC.

关键词： autoantibodies clinical profile systemic sclerosis

Some Classes of Operators Related to p-Hyponormal Operator

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Advances in Pure Mathematics 2012年第6期2卷 419-422页

作者： md. Ilyas Reyaz Ahmad Al-Ain University of Science and Technology Al Ain & Abu Dhabi UAE Department of Mathematics Gaya College Gaya Bihar India

We introduce a new family of classes of operators termed as *p-paranormal operator, classes *A(p,p);p > 0 and *A(p,q);p, q > 0, parallel to p-paranormal operator and classes A(p,p);p> 0 and A(p,q);p, q > 0 introduced by M. Fujii, D. Jung, S. H. Lee, M. Y. Lee and R. Nakamoto [1]. We present a necessary and sufficient condition for p-hyponormal operator T∈B(H)to be *p-paranormal and the monotonicity of *A(p,q). We also present an alternative proof of a result of M. Fujii, et al. [1, Theorem 3.4].

关键词： p-Hyponormal Operator Monotonicity Class of Operators *A(p q) *Paranormal Operator *p-Paranormal Operator

Climate Variability & Establishment of Rainfall Threshold Line for Landslide Hazards in Rangamati, Bangladesh

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LaF3-passivation of Porous Silicon for the Enhancement and Stabilization of Photoluminescence

Open Journal of Geology（地质学期刊） 2023年第9期

作者： Mahmuda Khatun abu Taher Mohammad Shakhawat Hossain Hossain md.Sayem

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材料科学与工程（中英文版） 2010年第4期4卷 60-65页

作者： Sinthia Shabnam Mou md. Atowar Rahman Mushtaq Ahmed Sobhan md. Abdur Rahman abu Bakar md.Ismail Department of Applied Physics and Electronic Engineering Rajshahi University Rajshahi 6205 Bangladesh

Passivation of porous silicon (PS) with LaF3 has been investigated in this article. PS has been prepared by electrochemical etching single crystal Silicon (Si) in a solution of HF and ethanol at various current densities. Just after fabrication, PS samples were passivated with e-beam-evaporated LaF3 of various thicknesses. SEM, XRD and EDX confirmed a heteroepitaxy of LaF3, PS and Si. The photoluminescence (PL) peak appeared at 696 nm that confirmed the luminescence from the PS and not from LaF3. The LaF3 layer did not affect appreciably the size of silicon crystallites as the full width half maxima (FWHM) of the PL band remained nearly constant with LaF3 thickness. Thin layer of LaF3 produced a good enhancement of photoluminescence of PS where as thicker layer provided the luminescence stability. The PL intensity degraded due to aging, but it was possible to recover the degraded PL intensity by annealing the LaF3/PS/Si structure at 400 °C for 10 mins in air. Altogether, it can be concluded that annealed LaF3 on PS can provide the required passivation of PS that might enable it to be used in the photonic devices.

关键词：光致发光钝化处理氟化镧多孔硅光稳定发光强度结构退化电子束蒸发

香蕉组织培养过程中内生菌污染的控制(英文)

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生物工程学报 2007年第6期23卷 1042-1048页

作者： Soubir Titov Salil Kumar Bhowmik md.Sadrul Alam Sarder Nasir Uddin Biotechnology and Genetic Engineering Discipline Khulna University Biotechnology Department Bangladesh Agricultural University

研究了体外培养一种孟加拉传统香蕉（musa ***）的茎尖组织。茎尖的原始细胞表面经无菌处理（0．1％HgCl2处理12min），接种6～15d后外植体地下茎部分仍有微生物污染（大部分是细菌），杀死了85％的外植体。为确定无污染培养基，将等量... 详细信息

研究了体外培养一种孟加拉传统香蕉（musa ***）的茎尖组织。茎尖的原始细胞表面经无菌处理（0．1％HgCl2处理12min），接种6～15d后外植体地下茎部分仍有微生物污染（大部分是细菌），杀死了85％的外植体。为确定无污染培养基，将等量外植体分别浸泡在舍400mg／L氨苄青霉素和200mg／L庆大霉素（两种光谱抗生素）的培养基中1h。结果表明，经抗生素处理的外植体完全没有污染，但培养3周后不能再生。进行二次继代培养后，其中一部分外植体吸收了培养基并胀大，颜色由苍白转变成浅绿或深绿。三次继代培养后数天，不再观察到外植体的生长，所有经抗生素处理过的外植体都开始死亡。在未经抗生素处理的活外植体中，单个茎发育的最佳培养基是：Ms＋4．0mg／LBA＋0．5mg/L KT＋15％CW，平均生长时间为18～21d，但再生率很低，只有30％。茎细胞增殖的最佳培养基是：MS＋4．0mg／L BA＋2．0mg／L IAA＋15％CW，每个茎平均只萌发3～4个芽。最后，在添加0．5mg／L IBA的一半浓度的MS培养基中，体外培养茎最大生根率达到90％。

关键词：香蕉 Kanthali 体外茎尖抗生素