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A Comparative Assessment of Hydrogen Embrittlement: Palladium and Palladium-Silver (25 Weight% Silver) Subjected to Hydrogen Absorption/Desorption Cycling

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Advances in Chemical Engineering and Science 2016年第3期6卷 246-261页

作者： Gilberto Jimenez Erik Dillon Joseph Dahlmeyer Travis Garrison Tyler Garrison Sedna Darkey Kyle Wald Joseph Kubik Danielle Paciulli Mustakim talukder Joshua Nott Maria Ferrer Joseph Prinke Priscilla Villaneuva Fred Massicotte Karim Rebeiz Steve Nesbit Andrew Craft Department of Chemistry University of Hartford West Hartford CT USA Institute of Materials Science University of Connecticut Storrs CT USA College of Engineering Phoenicia University Beirut Lebanon Department of Mechanical Engineering Lafayette College Easton PA USA

The negative effects of hydrogen embrittlement on metallic systems have been investigated through determination of the mechanical properties of two metallic systems that were exposed to hydrogen. An assessment of the effects of hydrogen absorption/desorption cycling on the tensile strength, ductility, and microhardness of pure palladium and the alloy palladium-silver (25 weight% silver) has been undertaken. The variables that are the focus of the study are the amount of hydrogen absorbed by the metal, deuterium isotope effect, number of hydrogen absorption/desorption cycles, and the hydrogen exposure temperature. Under all conditions studied, the mechanical properties of pure palladium were significantly altered as a result of hydrogen exposure, with significant hydrogen embrittlement occurring. In contrast, the mechanical properties of the palladium-silver alloy showed little alteration as a result of hydrogen exposure, including virtually no occurrence of hydrogen embrittlement.

关键词： Hydrogen Palladium Palladium-Silver Embrittlement

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Outcomes of Layered versus Mass Closure in Transverse Incision during Emergency Laparotomy in Children

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Journal of Biosciences and Medicines 2020年第8期8卷 180-193页

作者： Khandoker Moynul Hasan Shahnoor Islam Md. Ashraf Ul Huq Muhammed Moinul Huque Shah Md. Rezaul Karim Mohammad Shafiul Azam Md. Iqbal Hossain talukder Sharmin Ara Begum Mohammad Kamrul Ahsan A. K. M. Shahidur Rahman Department of Pediatric Surgery Dhaka Medical College Hospital (DMCH) Dhaka Bangladesh Department of Pediatric Urology Dhaka Medical College Hospital (DMCH) Dhaka Bangladesh Department of Surgery Sheikh Hasina Medical College Hospital Habiganj Bangladesh Department of Urology National Institute of Kidney Diseases and Urology (NIKDU) Dhaka Bangladesh Department of Surgery Sheikh Hasina Medical College Hospital Tangail Bangladesh Department of Anesthesiology National Institute of Traumatology and Orthopedic Rehabilitation (NITOR) Dhaka Bangladesh Holy Family Red Crescent Medical College Hospital (HFRCMCH) Dhaka Bangladesh Department of Nephrology Bangabandhu Sheikh Mujib Medical University (BSMMU) Dhaka Bangladesh

Background: The value of laparotomy closure technique may be measured by the incidence of early and late wound complications. The best laparotomy closure technique should be less time consuming, easy and cost-effective, while preventing both early and late complications. Objective: To compare the outcomes of layered versus mass closure in transverse incision during emergency laparotomy in children. Methods: This prospective comparative study was conducted at Department of Pediatric Surgery, Dhaka Medical College Hospital (DMCH), Dhaka, Bangladesh from July 2016 to June 2018. A total of 60 pediatric age cases that underwent laparotomy were included in this study. Cases were randomly allocated into two groups;30 patients were in Group A (Layered closure) and 30 patients were in Group B (Mass closure). The outcome variables were time required for wound closure, wound infection, wound dehiscence and incisional hernia. Data were analyzed and compared by statistical tests. Results: The mean age of Group A and Group B patients were 31.08 ± 30.25 months and 34.70 ± 42.73 months respectively (p = 0.706). The ratio between male and female subject was 1.1:1 in Group A and 3.3:1 in Group B. The common diseases of the study patients who underwent laparotomy were intussusceptions, intestinal obstruction due to bands and adhesion, perforated appendix and perforation of small intestine due to blunt trauma respectively. Mean wound closure time was significantly less in mass closure group [28.20 ± 2.17 minutes in layered closure group and 18.80 ± 1.67 minutes in mass closure group, (p ≤ 0.001)]. Wound infection rate, incidence of superficial wound dehiscence, and incisional hernia were relatively less in mass closure group, however, the differences were not statistically significant (p = 0.053, p = 0.095 and p = 0.301 respectively). There was no complete wound dehiscence in Group A, but that was in 1 (3.3%) patient i

关键词： Laparotomy Layered Closure Mass Closure

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Demographic, Clinical and Biochemical Characteristics of Drug Naive Type 2 Diabetes Patients of Bangladesh

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Open Journal of Endocrine and Metabolic Diseases 2021年第8期11卷 145-154页

作者： Shahjada Selim Masud-Un Nabi Mohammad Saifuddin Mohammad Abdul Hannan Muhammed Abu Bakar Samir Kumar talukder A. B. M. Kamrul Hasan Mohammad Nurul Amin Md. Azizul Hoque Md. Shahinur Rahman Ahmed Salam Mir Faria Afsana Department of Endocrinology Bangabandhu Sheikh Mujib Medical University Dhaka Bangladesh Department of Endocrinology Rajshahi Medical College Rajshahi Bangladesh Diabetes & Endocrinology Dhaka Medical College Dhaka Bangladesh Department of Endocrinology North East Medical College & Hospital Sylhet Bangladesh Department of Endocrinology Chattogram Maa O Shishu Hospital Chattogram Bangladesh Department of Endocrinology Rangpur Medical College Rangpur Bangladesh Department of Endocrinology Mymensingh Medical College Mymensingh Bangladesh Department of Endocrinology Mugda Medical College Dhaka Bangladesh Endocrinology Shaheed Ziaur Rahman Medical College Bogura Bangladesh Department of Diabetes and Endocrinology Pabna Diabetic Association Hospital Pabna Bangladesh Department of Endocrinology Bangladesh Institute of Health Sciences Dhaka Bangladesh Department of Endocrinology BIRDEM Dhaka Bangladesh

Background: Although the frequencies of getting drug naive type 2 diabetes patients among all the diabetic patients are very low, nowadays it claims more attention in the treatment procedures of drug naive diabetic patients. But in Bangladesh, we have very few research-oriented data regarding the demographic, clinical and biochemical characteristics of drug naive type 2 diabetes patients. The aim of this study was to determine the demographic clinical and biochemical characteristics of drug naive type 2 diabetes patients of Bangladesh. Methods: This was an open label observational real-life study which was conducted in the chambers of the investigators in several places of Bangladesh as outdoor setting during the period from August 2020 to December 2020. In total, 250 patients with drug naive type 2 diabetes mellitus were enrolled as the study population. Proper written consents were taken from all the participants before starting data collection. A pre-designed questionnaire was used in patient data collection. All data were processed, analyzed and disseminated by MS Office and SPSS version as per need. Result: Two hundred and fifty (250) participants were selected as study population. The male-female ratio of the participants was 1.4:1. The highest number of participants was from 51 - 60 years’ age group (31.20%). The highest number of participants (41%) was with overweight (BMI: 25 - 30 kg/m2). Majority (65%) of the patients of this study suffered from diabetes for ≤5 years. The mean (±SD) SBP of the participants was 137.25 ± 17.50 mmHg and the mean (±SD) DBP of the participants was 85.16 ± 13.39 mmHg. We found the mean (±SD) fasting blood sugar (mg/dl), post prandial blood sugar (mg/dl), total cholesterol (mg/dl), triglycerides (mg/dl), HDL-Cholesterol (mg/dl), LDL-cholesterol (mg/dl), VLDL-cholesterol (mg/dl), uric acid (mg/dl), creatinine (mg/dl), urea (mg/dl), total bilirubin (mg/dl), direct biliru

关键词： Demographic Biochemical Clinical Characteristics Drug Naive Type 2 Diabetes Bangladesh

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在植物中铝毒性的一些方面

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电力科学与技术学报 1989年第4期 34-34页

作者： Roy A K Sharma A talukder G 迎春

在大多数强酸性土壤中,铝的毒性是一种限制植物生长的主要因子。尽管毒性的精确机制还不完全清楚,但对植物生长的毒害作用被认为是由几种生理生化途径引起的.通常,通过减少由铝引起的有丝分裂活性阻碍根的伸长,随后增加对干旱的敏感性.... 详细信息

在大多数强酸性土壤中,铝的毒性是一种限制植物生长的主要因子。尽管毒性的精确机制还不完全清楚,但对植物生长的毒害作用被认为是由几种生理生化途径引起的.通常,通过减少由铝引起的有丝分裂活性阻碍根的伸长,随后增加对干旱的敏感性.吸收的最初部位通常是根冠和履盖表皮细胞的粘液分泌物。铝离子通过与聚糖醛酸交换吸附,和果胶物质络合,以及形成多羟基形式非常专一的结合到粘液上,增加每正电荷铝原子的数量.

关键词：植物生长毒性毒力细胞膜质膜内皮层皮层细胞

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铝的有利作用

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电力科学与技术学报 1989年第4期 71-71页

作者： Roy A K Sharma A talukder G 迎春

尽管铝是一种非必需元素,已报道低浓度的铝有时对许多植物,例如水稻(Howeler和Cadavid,1976),热带豆科植物(Andrew等,1973),按树属植物(Mullette,1975)茶树(Matsumoto等,1979),桃树(Edwards等,1976),糖甜菜(Kesar等,1975),玉米自交系(Cl... 详细信息

关键词：植物

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MONITORING OF CYTOGENETIC DAMAGE FOR TOBACCO HABITS IN OCCUPATIONALLY EXPOSED POPULATION IN CALCUTTA

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癌变.畸变.突变 1991年第S1期3卷 5-5页

作者： Anusri Banerjee A.K.Roy B.B.Ghosh S.Chatterjee A.Pakrashi G.talukder A.Sharma Indian Institute for Chemical Biology JadavpurCalcuttaand Centre for Advanced StudiesDept.of BotanyUniversiry of Calcutta.

Field studies from industrial belts in Calcuttahave been carried out with 130 male workersaddicted to tobacco *** samples havebeen collected with detailed history of tobaccoaddiction *** and duration Chromosomalalterations with SCE following leucocyte culture and changes in genetic mackers following PAGE have been studied from these samples.

关键词： MONITORING OF CYTOGENETIC DAMAGE FOR TOBACCO HABITS IN OCCUPATIONALLY EXPOSED POPULATION IN CALCUTTA-Anusri Banerjee

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