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Evaluation of antibiotic resistance patterns in clinical isolates of Klebsiella pneumoniae in Bangladesh

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Biosafety and Health 2021年第6期3卷 301-306页

作者： Parama Aminul Shaheda Anwar Md.Maruf Ahmed molla Md.Ruhul Amin Miah Department of Microbiology AMCJJashoreBangladesh Department of Microbiology and Immunology BSMMUShahbagDhakaBangladesh Department of Virology National Institute of Laboratory Medicine and Referral CenterDhakaBangladesh

The treatment of *** infections has become more difficult due to the emergence of multidrugresistant *** study aimed to evaluate antimicrobial resistance patterns and detect different types of beta-lactamase genes among MDR and non-MDR Klebsiella pneumoniae in various clinical samples.A total of 150 Klebsiella pneumoniae were identified from different clinical samples by conventional microbiological *** sensitivity was detected by the Kirby-Bauer disc diffusion ***-spectrum betalactamase,Metallo-β-lactamase,and carbapenemase were phenotypically detected by double-disk synergy test,combined disk assay,and modified Hodge *** also detected differentβlactamase genes and virulence *** majority of Klebsiella pneumoniae were multi-drug resistant(82%).The bacteria were found resistant to mostβ-lactam antibiotics,aminoglycosides,ciprofloxacin,cotrimoxazole,carbapenem,piperacillin,and ***,only about 0.7%colistin resistance was observed.A double-disk synergy test was performed among the isolates for phenotypic detection of ESBL producing Klebsiella *** 16.6%of isolates were found to be ESBL ***β-lactamase genes,NDM(23.34%),OXA-48(8%),and KPC(7.3%)were *** prevalentβlactamase genes VIM and IMP were not *** summary,the prevalence of MDR Klebsiella pneumoniae is high in Bangladesh,which may complicate the treatment of hospitalized patients.

关键词： MDR Klebsiella pneumoniae ESBL Antibiotic resistance Bangladesh

Influenced of Twill Geometry Variation on Woven Fabrics: Analysis of Physico-Chemical Properties

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Journal of Textile Science and Technology 2019年第4期5卷 134-147页

作者： Solaiman Hemonta Kumar Sarkar Sefayet Ullah Jannatul Bake molla Abul Kasem Mohammed Fazlul Haque Textile Engineering College Noakhali Bangladesh University of Textiles Dhaka Bangladesh Department of Fabric Manufacturing Engineering Textile Engineering College Noakhali Bangladesh University of Textiles Dhaka Bangladesh Bangladesh Jute Research Institute Dhaka Bangladesh

It has been analyzed the properties such as tensile strength, tearing resistance, crease angle recovery, pilling formation, drape co-efficient, colorfastness to rubbing and colorfastness wash by testing with the help of related instrument, The twill woven fabrics which are chosen only different to their weave structure (2/1 S twill and 3/1 S twill) whether the other specification of the fabrics like warp count, weft count, ends per inch, picks per inch, GSM of the fabrics and the fiber quality were same. From the experiment, it was found that some properties such as tensile strength, drape co-efficient and colorfastness of 2/1 twill are better than 3/1 twill on the other hand few properties such as crease angle recovery, tearing resistance and colorfastness to wash of 3/1 twill is better than 2/1 twill. Afterward while performing the job for identifying the pill formation tendency, it was observed that pill formation tendencies of the both fabrics are same.

关键词： Twill Fabrics Reactive Dyes Tensile Strength Tearing Resistance Color Fastness to Rubbing

Evaluation of Reaction Mechanism for Photocatalytic Degradation of Dye with Self-Sensitized TiO<sub>2</sub>under Visible Light Irradiation

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Open Journal of Inorganic Non 2017年第1期7卷 1-7页

作者： Md. Ashraful Islam molla Ikki Tateishi Mai Furukawa Hideyuki Katsumata Tohru Suzuki Satoshi Kaneco Department of Chemistry for Materials Mie University Mie Japan Mie Global Environment Center for Education and Research Mie University Mie Japan

The dye-sensitized TiO2 method is one of the most promising methods for the visible-light-induced detoxification of pollutants. The reaction mechanism for photocatalytic degradation of orange II (OII) and rhodamine B (RhB) with self-sensitized TiO2 under visible light irradiation (λ > 400 nm) has been evaluated. Radical scavenger studies were carried out to investigate the active species involved in the photodegradation of 5 mg/L of initial concentration of OII and RhB at room temperature. The trapping effects of different scavengers results proved that the oxidation of OII and RhB mainly occurred by the direct oxidization of h+ and ·O2- radicals, while the ·OH radicals played only a relatively minor role in the direct oxidization process.

关键词： TiO2 Photocatalytic Degradation Visible Light Dye-Sensitization Reaction Mechanism

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谷歌收购交易引发数据隐私忧虑

中国信用 2019年第11期 122-123页

作者： Shirin Ghaffary Rani molla 不详

谷歌说它不会用你的Fitbit数据来投放广告。那么,它还能做什么呢?谷歌的母公司Alphabet于近日宣布,将以21亿美元收购可穿戴智能手表制造商Fitbit,这是这家搜索巨头进军健康市场的最新举措。

关键词：隐私忧虑可穿戴设备监管机构收购交易

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我们真的关心自己的隐私吗

中国信用 2019年第6期 123-125页

作者： RANI molla 孟佳惠不详

我们中的许多人都与科技公司有着微妙的关系。谷歌、Facebook和亚马逊(Amazon)等无处不在的技术制造商,一再跟踪、共享用户的个人数据,伤害了用户的信任。然而,接二连三的类似事件发生,我们却依然将这些技术设备置于我们生活的中心,依... 详细信息

我们中的许多人都与科技公司有着微妙的关系。谷歌、Facebook和亚马逊(Amazon)等无处不在的技术制造商,一再跟踪、共享用户的个人数据,伤害了用户的信任。然而,接二连三的类似事件发生,我们却依然将这些技术设备置于我们生活的中心,依然购买这些可以通过摄像头、麦克风以及其他传感器亲密接触到我们生活的设备。一项由国际消费者协会和互联网协会共同发起的智能设备调查显示。

关键词：消费者智能扬声器国际消费者协会

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阴极保护系统的设计

广西电力技术 1990年第3期13卷 62-67页

作者： molla.,R 蒋礼年

Part 1: Synthesis and Evaluation of Novel Nano Scale Powdered Polyurethane Acrylate Binders

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Advances in Chemical Engineering and Science 2012年第2期2卷 212-227页

作者： Mohamed M. El-molla Karima Haggag Fatma N. El-Shall N. O. Shaker Faculty of Science (Girls) Al-Azhar University El-Nasser City Cairo Egypt Textile Research Division National Research Centre Cairo Egypt

Some new an aqueous polyurethane acrylate (waterborne binder) based on polyethylene glycol with different M. wt. mixed with polyol were carried out. Seven different polyurethane acrylate co-polymers were prepared aiming at substituting the two hydroxyl groups of polyethylene glycol (6000, 12,000 and 20,000 g/mol) and two primary hydroxyl groups of polyol through their reaction with corresponding calculated amounts of either isophorone diisoyanate or toluene diisocyanate and caped the remaining isocyanate group with either hydroxy ethyl acrylate or hydroxy propyl methacrylate to get on the polyurethane acrylate polymers [PUA]. From DSC measurement the result of Tg of synthesized PUA are in range from -8.78℃ to 36.4℃. So they can classify as soft binders. The infrared spectra, rheological properties, viscosity measurement, the weight average molecular weight, of the synthesize binders were investigated.

关键词： Synthesis Novel Powdered An Aqueous Polyurethane Acrylate Binders

Phase Transition Investigations of a Series of Aromatic Naphthalene-2-yl-4-(Alkoxy) Benzoate and Naphthalene-1-yl-4-(Alkoxy) Benzoate Materials

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World Journal of Condensed Matter Physics 2022年第1期12卷 1-7页

作者： Wajdi Michael Zoghaib Carlo Carboni Mohammed Elias molla Samiya Al-Mahrezi Turkiya Al-Shahumi Sanaa Al-Badi Muna Al-Farsi Department of Chemistry Sultan Qaboos University Al-Khod Sultanate of Oman Department of Physics Sultan Qaboos University Al-Khod Sultanate of Oman Department of Chemistry Jahangirnagar University Dhaka Bangladesh

The mesogenic properties of a homologous series of aromatic ester materials are investigated. Single tail and double tail materials were synthesized to compare with other series we prepared and published earlier. The phase sequences and transition temperatures were obtained by polarized light microscopy and differential scanning calorimetry. Only the single tail materials with the ester attached to naphthalene at position 2 display mesogenicbehavior. Two materials (ZH 29 & ZH 32) possess a monophasic nematic phase and another two materials (ZH 14 & ZH 35) display biphasic nematic and smectic (A) phases.

关键词： Liquid Crystals Mesomorphism Calamitic Nematic Smectic A Polarized Optical Microscopy Differential Scanning Calorimetry

Synthesis of Novel Acid Dyes with Coumarin Moiety and Their Utilization for Dyeing Wool and Silk Fabrics

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Open Journal of Medicinal Chemistry 2016年第1期6卷 18-35页

作者： Mahmoud S. Bashandy Fatma A. Mohamed Mohamed M. El-molla Mahmoud B. Sheier Ahmed H. Bedair Chemistry Department Faculty of Science (Boys) Al-Azhar University Cairo Egypt Chemistry Department University College in Al-Jamoum Umm Al-Qura University Makkah Saudi Arabia Textile Research Division National Research Centre Giza Egypt Balguenvzh University College Department of Female Student Umm Al-Qura University Makkah Saudi Arabia Chemistry Department College of Sciences & Art Al Jouf University El-Quraiat Saudi Arabia

This article describes the synthesis of some novel coumarin compounds to use as acid dyes by using compounds 1 - 4 as starting materials, which were prepared by interaction of 2-hydroxybenzaldehyde with ethyl 3-oxobutanoate, diethylmalonate, 4-nitrobenzenediazonium chloride and 4-sulfobenzenediazonium chloride, respectively. Compound 1 reacted with bromine and 2-cyanoacetohydrazide to give phenacyl bromide derivative 5 and 2-cyanoacetohydrazone derivative 6, respectively. Coupling of compound 6 with equimolar amount of 2-sulfo-4-((4-sulfophenyl) diazenyl)benzenediazonium chloride gave coumarin acid dye 8. Phenacyl bromide derivative 5 re-acted with potassium cyanide in refluxing ethanol to produce compound 7, which on coupling with equimolar amount of 8-hydroxy-6-sulfonaphthalene-2-diazonium chloride and 8-hydroxy-3,6-disulfonaphthalene-1-diazonium chloride gave coumarin acid dyes 9 and 10, respectively. Interaction of compound 2 with 2-amino-5-((4-sulfophenyl)diazenyl)benzenesulfonic acid, benzene-1,4-diamine and 3,3’-dimethoxy-[1,1’-biphenyl]-4,4’-diamine in refluxing ethanol afforded compounds 11, 12 and 14, respectively. Diazonium sulphate of compounds 12 and 14 coupling with 4-amino-5-hydroxynaphthalene-2,7-disulfonic acid gave compounds 13 and 15, respectively. Cyclocondensation of compound 3 with ethyl 3-oxobutanoate, diethyl malonate and malononitrile afforded derivatives of 3-acetyl-2H-chromen-2-one 16, ethyl 2-oxo-2H-chromene-3-carboxylate 17 and 2-imino-2H-chromene-3-carbonitrile 18, respectively. Reaction of sodium benzenesulfonate derivative 4 with ethyl 3-oxobutanoate and hydrazine hydrate gave compounds 19 and 20, respectively. The structures of the newly synthesized compounds were confirmed by elemental analysis, UV/ VIS, IR, 1H NMR and Ms spectral data. The suitability of the prepared dyestuffs for dyeing of wool and silk fabrics has been investigated. The dyed fabric shows good light fastness, very good rubbing, perspiration, washing and excellent

关键词： Synthesis Coumarin Acid Dye Dyeing Wool Fabric