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Studies on the anti-diarrheal properties of leaf extract of Desmodium puchellum

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Asian Pacific Journal of Tropical Biomedicine 2013年第8期3卷 639-643页

作者： Md.khalilur rahman Soumitra Barua Md.Fokhrul Islam Md.Rafikul Islam Mohammed Abu Sayeed Mst.Shahnaj Parvin Md.EkramulIslam Department of Pharmacy International Islamic University ChittagongBangladesh Department of Pharmacy University of RajshahiBangldesh

Objective:To evaluate the pharmacological activity against diarrhea of methanol and petroleum ether extract ofDesmodium puchellum(Family:Fabaceae)***:The extract was evaluated for castor oil-induced diarrhea and enteropooling as well as intestinal motility in *** of the extracts were given to the rats at 200 mg/kg *** was used as a standard drug for ***:The diarrheal severity was reduced significantly(P<0.05)by methanol and petroleum ether extracts by 31.95% and 28.33%,respectively,whereas 54.75% inhibition was found for standard drug loperamide at 5 mg/*** two extracts also significantly(P<0.05) reduced the intestinal volume in case of castor oil induced ***:It is concluded that both fractions contain some biologically active ingredients that are active for anti-diarrheal actions whereas methanol fraction has better potential.

关键词： Antidiarrhea Thrombolysis Desmodium puchellum Loperamide

An Overview on the Spinning Triangle Based Modifications of Ring Frame to Reduce the Staple Yarn Hairiness

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Journal of Textile Science and Technology 2020年第1期6卷 19-39页

作者： Md. khalilur rahman Khan Hosne Ara Begum Md. Razib Sheikh Department of Textile Engineering Bangladesh University of Business and Technology Dhaka Bangladesh Department of Yarn Engineering Bangladesh University of Textiles Dhaka Bangladesh

Traditional ring spinning system is associated with the several limitations, one of which is yarn hairiness. The awareness has been vibrantly growing among the spinning mills for reducing staple yarn hairiness because of its detrimental effects on the subsequent processes (i.e., weaving, knitting, dyeing etc.) and the quality of resultant textile products. As a result, modified form of ring frame has attracted a lot of attention among the researchers for making yarn with the lower level of hairiness value. Besides the raw material parameters and some processing variables, spinning triangle (ST) is the most critical region that has decisive influence on the distribution of fiber tensions and their spatial orientations and shapes in staple yarn body. Thus, using appropriate methods to control the spinning triangle geometry actively has been a vital issue in the field of yarn hairiness reduction. In this paper, it is attempted to make an overview on the spinning triangle based modifications of ring frame that have been designed and destined to reduce hairiness. However, agent aided ring spinning system has also been briefly discussed in this paper as well.

关键词： Ring Frame Compact Spinning Spinning Triangle Yarn Hairiness

A Review of the Study on the Electromigration and Power Electronics

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Journal of Electronics Cooling and Thermal Control 2016年第1期6卷 19-31页

作者： Md. khalilur rahman Abul Monsur Mohammed Musa Budrun Neher Kawchar Ahmed Patwary Mohammad Atiqur rahman Md. Shariful Islam Department of Physics Comilla University Comilla Bangladesh Department of Physics University of Chittagong Chittagong Bangladesh Department of Chemistry Comilla University Comilla Bangladesh Department of ICT Comilla University Comilla Bangladesh

Electromigration is a main challenge in the pursuit of power electronics, because physical limit to increase current density in power electronics is electromigration (EM), whereas much higher electrical current and voltage are required for power electronics packaging. So the effect of EM is an important issue in applications where high current densities are used, such as in microelectronics and related structures (e.g., Power ICs). Since the structure size of integrated circuits (ICs) decreases and the practical significance of this effect increases, the result is EM failure. On the other hand, in the next generation power electronics technology electrical current density is expected to exceed 107 A/cm2 which is another challenge. This review work has been carried out to identify the mechanism of EM damage in power electronics (e.g., pure metallization and solder joints) and also how to control this kind of damage.

关键词： Voids and Hillocks Interconnect Solder Joint Thermomigration MTF Reliability of IC

A Review on Zinc Sulphide Thin Film Fabrication for Various Applications Based on Doping Elements

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Materials Sciences and Applications 2018年第9期9卷 751-778页

作者： Md. Anisuzzaman Shakil Sangita Das Md. Ashiqur rahman Umma Salma Akther Md. Kamrul Hassan Majumdar Md. khalilur rahman Department of Physics Comilla University Comilla Bangladesh Department of Computer Science and Engineering Comilla University Comilla Bangladesh Department of Electrical and Computer Engineering Boise State University Boise ID USA Department of Electronic Materials and Devices Engineering Soonchunhyang University Asan Chungnam South Korea

Zinc Sulfide (ZnS) thin film has attracted increasing attention due to their potential applications in the new generation of nano-electronics and opto-electronics devices. The physical and chemical properties of ZnS have outstanding quality for different applications. Moreover, ZnS doped with various elements are creating a new era for both academic research and industrial applications. So, the optical properties of modified ZnS thin film will help us to find a suitable doping element for convenient deposition which may enhance the conductance and transmitting properties of the film. This review work has been carried out to explore the four-modification elements that constitute Cu, Ni, Co & Fe as descending order of atomic number corresponding to Zn, along with some potential applications considering the recent research work with other doping elements too such as Al, C, Pt etc. For example, FE, FET, Catalytic, Solar cell, Electroluminescence, Fuel cell, different sensors (Chemical sensors, Bio-sensors, Humidity sensors, light sensors, UV light sensors) and nanogenerators use ZnS thin film.

关键词： ZnS ZnS Properties Doping Elements (Cu Ni Co Fe) Sensors Generators

Schwannomas—Atypical Presentation and Challenges

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Case Reports in Clinical Medicine 2019年第4期8卷 93-98页

作者： R. Vijai J. Ruban Kumar R. Arihanth Manoj Prabu Narayanasami Bharath khalilur rahman Arcot Rekha Saveetha Medical College and Hospital Chennai India

Introduction: Neurogenic tumors include schwannomas and neurofibro-mas. They occur often in the head and neck. However, their occurrence on the vagus is uncommon. A high index of suspicion is needed to order imaging in pelvic lesions that present atypically. Discussion: Schwannomas are hypointense on T1 and heterogeneously hyperintense on T2 on MRI. The histopathological appearance with Antoni type A and type B is typical of Schwannoma. Conclusion: Schwannomas are slow growing benign tumors that are separable from the parent nerve. Recurrence is uncommon after resection.

关键词： Cervical Presaccral IHC

A Physician Suffering from COVID-19 with Multiple Co-Morbidities Have Delayed Viral Clearance: A Case Report from Bangladesh

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Advances in Infectious Diseases 2020年第3期10卷 94-100页

作者： Md. Reaz Uddin Chowdhury Kazi Shanzida Akter Sahedul Islam Bhuiyan Md. khalilur rahman Khabir Bimal Chandra Das Muhammad Anwarul Kabir Abdul Malek Ukil Medical College Noakhali Bangladesh Dedicated COVID-19 Hospital-Trauma Center Feni Bangladesh Brahmanbaria Medical College Brahmanbaria Bangladesh 250 Bed District Sadar Hospital Feni Bangladesh

Background: Novel corona virus (SARS-Coronavirus-2 SARS-CoV-2) which emerged in China has spread to multiple countries rapidly. Little information is known about delayed viral clearance in mild to moderate COVID-19 pa-tients. As it is highly contagious, health care workers including physicians are high risk of being infected in hospital care. Case Report: A 37 years old Bangladeshi physician working in a paediatric unit of a medical college hos-pital with multiple co-morbidities, hypertension, diagnosed axial spondy-loarthropathy (ankylosing spondylitis) taking disease modifying anti rheu-matic drugs— DMARDs (Salfasalazine) from 2016 till now, chronic persis-tent bronchial asthma on medication developed sore throat, increasing breathlessness and cough admitted to his own hospital on 22 April, 2020. He had a history of contact with a relapse nephrotic syndrome (glomerulone-phritis) patient admitted with severe respiratory distress later confirmed as COVID-19 following RT PCR test on 14 April, 2020. After 3 days of contact with the patient, the physician also developed the symptoms mentioned above. The RT PCR test result of the physician came positive on 18 April, 2020. The physician primarily taken only azithromycin 500 mg once daily along with other regular drugs. On 5, 12 and 18 May, 2020, his sample was taken for re-test and came positive subsequently. After that he started Iver-mectin (0.15 mg/kg) once daily for 3 days and doxycycline 100 mg BD for 7 days. He gave samples again on 27 and 29 May, 2020 which were came nega-tive after 39 days. On full recovery he was discharged from hospital on day 40. We choose the patient because presence of co-morbidities may be asso-ciated with delayed viral clearance and physicians with co-morbidities working in a hospital have high risk of being infected.

关键词： Physician Co-Morbidities Viral Clearance COVID-19 Case Report Bangla-desh

Safety dose of three commercially used growth promoters:nuricell-aqua,hepaprotect-aqua and rapid-grow on growth and survival of Thai pangas(Pangasianodon hypophthalmus)

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Journal of Coastal Life Medicine 2014年第12期 925-930页

作者： Md.Ariful Islam Abu Saim Mahammed Shadat Mandal Md.Shaheed Reza Md.Alamgir Md.khalilur rahman Md.Kamal Subhash Chandra Chakraborty Bangladesh Fisheries Research Institute Mymensingh-2201Bangladesh Department of Fisheries Technology Bangladesh Agricultural UniversityMymensingh-2202Bangladesh

Objective:To optimize the dose of 3 commonly used growth promoters,viz.,Nuricell-Aqua(composition:glucomannan complex and mannose polymer),Hepaprotect-Aqua(composition:β-glucan,mannose polymer and essential oil)and Rapid-Grow(composition:organic acid and their salt,β-glucan,mannose oligosaccharide and essential oil),using Thai pangas(Pangasiandon hypophthalmus)as cultured ***:Thai pangas fingerlings with an average length and weight of 11 cm and 10 g were reared under laboratory condition and growth promoters were fed after incorporating them with a test diet at a ratio of 10%of their body weight for a period of 28 *** of data on growth such as weight gain(g),specific growth rate,survivability(%)test in each aquarium were conducted and data were analyzed using statistical ***:After 28 d of feeding with Nutricell-Aqua,10 mg/(20 g feed·day),which was the dose recommended by the manufacturer,was found *** Hepaprotect-Aqua and Rapid-Grow were employed,performance was found to be better with the dose of 60 mg/(20 g feed·day)which was 1.5 times higher than the dose recommended by the corresponding ***:These results suggest that chemicals and feed additives marketed in Bangladesh Fish Feed Market need further testing under Bangladesh climatic condition before being marketed.

关键词： Growth promoters Thai pangas Safety dose Mannose polymer Immunostimulants