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ALKALInE PULP OF CORn sTALKs

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天津科技大学学报 2004年第S1期 97-102页

作者： m. sarwar Jahan,m.an. russel.s.a.n. shamim,A.I. mostafa,md. Abdul Quaiyyum Pulp and Paper research Division BCsIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka Dhaka Pulp and Paper research Division BCsIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka Dhaka Pulp and Paper research Division BCsIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka Dhaka Pulp and Paper research Division BCsIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka Dhaka Pulp and Paper research Division BCsIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka Dhaka

Pulping of corn stalks was studied in soda, soda-anthraquinone (AQ), kraft and kraft-AQ processes. The time, temperature and alkali concentration were varied in soda process. In respect to kappa number and pulp yield, 1 hour cooking at 1400C in 14% alkali were best conditions for corn stalks pulping. Pulp yield was increased by 5.5% and kappa number was reduced by 4.4 points with an addition of 0.05% AQ in the soda liquor. Breaking length was better in soda-AQ process than soda process but tear strength was inferior. In the kraft process, pulp yield was increased with increasing sulphidity and decreasing active alkali. The effectiveness of AQ in the low and high sulphidity kraft process was studied. Results showed that AQ was more effective in low sulphidity than high sulphidity. strength properties in kraft processes were better than the soda and soda-AQ processes.

关键词： than length ALKALInE PULP OF CORn sTALKs high

ALKALInE PULP OF CORn sTALKs

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天津科技大学学报 2004年第A1期19卷 95-100页

作者： m. sarwar Jahan m.an. russel.s.a.n. shamim A.I. mostafa md. Abdul Quaiyyum Pulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka DhakaPulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka DhakaPulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka DhakaPulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka DhakaPulp and Paper research Division BCSIR Laboratories Dhaka Dr. Qudrat-E-Khuda Road Dhaka-1205 Bangladesh.Department of Applied Chemistry and Technology University of Dhaka Dhaka

关键词：碱性纸浆玉米淀粉苏打蒽醌硫化度牛皮纸破裂长度

Building the metaverse using digital twins at all scales,states,and relations

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Virtual Reality & Intelligent Hardware 2022年第6期4卷 459-470页

作者： Zhihan LV shuxuan XIE Yuxi LI m.shamim HOssAIn Abdulmotaleb El sADDIK Department of Game Design Faculty of ArtsUppsala UniversitySweden College of Computer science and Technology Qingdao UniversityQingdaoChina Department of software Engineering College of Computer and Information SciencesKing Saud UniversityRiyadhSaudi Arabia school of Electrical Engineering and Computer science(EECs) University of OttawaOttawaOntarioCanada

Developments in new-generation information technology have enabled Digital Twins to reshape the physical world into a virtual digital space and provide technical support for constructing the *** objects can be at the micro-,meso-,or *** metaverse is a complex collection of solid,liquid,gaseous,plasma,and other uncertain ***,the metaverse integrates tangibles with social relations,such as interpersonal(friends,partners,and family)and social relations(ethics,morality,and law).This review introduces some principles and laws,such as broken windows theory,small-world phenomenon,survivor bias,and herd behavior,for constructing a Digital Twins model for social ***,from multiple perspectives,this article reviews mappings of tangible and intangible real-world objects to the metaverse using the Digital Twins model.

关键词： Digital twins metaverse sensor

Petrogenetic study of mesoproterozoic volcanic rocks of north Delhi fold belt, nW Indian shield: implications for mantle conditions during Proterozoic

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Chinese Journal Of Geochemistry 2015年第1期34卷 93-114页

作者： m.s.Azam m.shamim Khan m.Raza IGnOU Regional Center Department of Geology AMU

mesoproterozoic north Delhi fold belt of nW Indian shield comprises three volcano-sedimentary basins viz. Bayana, Alwar and Khetri aligned parallel to each other from east to west. Each basin contains excellent exposures of mafic volcanic rocks. major, trace and rare earth element abundances of volcanic rocks of the three basins are significantly diverse. Bayana and Alwar volcanics are tholeiites bearing close similarity with low Ticontinental flood basalts. However, Bayana volcanics are characteristically enriched in incompatible trace elements and REEs while Alwar volcanics display least enriched incompatible trace element abundances and flat REE patterns. The Khetri volcanics exhibit a transitional composition between tholeiite and calc-alkaline basalts. REE based source modeling suggests that Bayana suite was formed from the melts derived from 1 % to 10 %(avg.4 %) of the partial melting of a spinel lherzolite source giving a residual mineralogy of 56 % Olv, 25 % Opx and19 % Cpx. Whereas Alwar suite evolved through 12 %–20 %(avg. 15 %) partial melting of the same source with a residual mineralogy 61 % Olv, 25 % Opx and 14 % *** volcanics are exposed at two localities Kolihan and madhan–Kudhan. The Kolihan volcanics were derived from 1 % to 6 %(avg. 4 %) partial melting with residualmineralogy 56 % Olv, 25 % Opx and 19 % Cpx whereas the magma of madhan Kudhan volcanic suite was generated by 15%–30 % partial melting of the same source leaving behind 64 % Olv, 25 % Opx and 11 % Cpx as residual mineralogy. This source modeling proves that melts of Bayana and Alwar tholeiites were generated by partial melting of a common source within the spinel stability field under the influence of mantle plume. During the course of ascent, Bayana melts were crustally contaminated but Alwar melts remained unaffected. There was two tier magma production in Khetri region, one from the partial melting of the mantle wedge overlying the subducted oceanic plate which formed Kolihan

关键词：基性火山岩中元古代西印度地幔柱褶皱带岩石成因西北地盾

Chemically and biologically activated biochars slow down urea hydrolysis and improve nitrogen use efficiency

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Pedosphere 2023年第4期33卷 659-669页

作者： nazmul H.AnTOR shamim mIA md.m.HAsAn nowrose J.LIPI Keiji JInDO miguel A.sAnCHEZ-mOnEDERO md.H.RAsHID Department of Agronomy Patuakhali Science and Technology UniversityDumkiPatuakhali 8602(Bangladesh) Agrosystems Research Groups Wageningen University and ResearchWageningen 6700 AA(The Netherlands) Department of soil and Water Conservation and Organic Waste management Spanish National Research Council(CEBAS-CSIC)Murcia 30100(Spain)

Biochar is considered a potential technology to enhance chemical fertilizer use efficiency through intensification of the interactions between nutrients and the functional groups on biochar ***,little is known about how the application of activated biochars mixed with urea influences nitrogen(n)mineralization and crop performance in paddy ***,a sawdust-derived fresh biochar(FBC)(ca.400℃)was activated chemically with 15%hydrogen peroxide and biologically with a nutrient solution mixed with a soil inoculum to obtain a chemically activated biochar(CBC)and a biologically activated biochar(BBC),*** chemical and surface properties of FBC,CBC,and BBC were evaluated using spectroscopic methods,i.e.,Fourier transform infrared spectroscopy and 13C nuclear magnetic resonance,and potentiometric charge *** n retention capacity of biochars and their interaction with urea hydrolysis were examined in a laboratory incubation ***,a field experiment was carried out in a paddy field with the biochars unmixed or mixed with urea at a 1:1 *** results showed that negative surface functional groups and negative charges were increased on both activated biochars,especially *** activated biochars contributed to a significant reduction in urea-biochar suspension pH and increased n retention in the incubation *** the enhanced surface properties of the activated biochars,no similar increases in rice biomass and grain yield were observed for these biochars in the field ***,rice biomass,grain yield,apparent n use efficiency,and agronomic n use efficiency were significantly higher with the application of the three biochars compared to no-biochar ***,the results indicate that the application of urea mixed with biochar could enhance crop performance,especially in the case of activated biochar,which would enhance n retention in the soil,reducing n loss.

关键词： chemical property crop yield functionalized biochar nitrogen uptake nutrient use efficiency pyrolysis

monkeypox:A comprehensive review of a multifaceted virus

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Infectious medicine 2023年第2期2卷 74-88页

作者： Randa Elsheikh Abdelrahman m.makram Tamilarasy Vasanthakumaran shubham Tomar Khizer shamim nguyen Dong Tranh sara s.Elsheikh nguyen Thanh Van nguyen Tien Huy Deanery of Biomedical sciences at Edinburgh medical school University of EdinburghEdinburgh EH105HFUnited Kingdom Online Research Club(http://***) Nagasaki 852-8523Japan school of Public Health Imperial College LondonLondon SW72BXUnited Kingdom Global Clinical scholars Research Training Harvard Medical SchoolBostonMA 02115USA Tata memorial Hospital Varanasi 400012India DataQ Health Karachi 75100Pakistan Department of Infection Control Binh Dinh Provincial General HospitalBinh Dinh 55000Vietnam Faculty of medicine Zagazig UniversityZagazig 44519Egypt school of Tropical medicine and Global Health Nagasaki UniversityNagasaki 852-8523Japan

In may 2022,the world witnessed the re-emergence of the zoonotic disease *** this was not the first epidemic of this disease,what differentiated the outbreak was the rapid global spread and increase of cases,which led the WHO to declare monkeypox a global health *** the disease spreads mainly through inadequately cooked meat of various rodent species,this virus also shows droplet,respiratory,sexual,and even vertical *** further multiplies in lymphoproliferative organs and presents with a classical smallpox-like rash,fever,headache,and muscle *** is confirmed with a polymerase-chain-reaction test and is managed largely supportively with possible usage of some antivirals and ***,some pre-exposure and postexposure prophylactic vaccines have been *** paper aims to conduct an in-depth review of the historical epidemics,transmission,pathophysiology,clinical presentation,and management of the monkeypox disease.

关键词： monkeypox Orthopoxvirus Outbreak smallpox

Human leukocyte antigen B polymorphism.an. association between HLA-B27 and endoplasmic reticulum aminopeptidase 1 rs30187 snP in patients with ankylosing spondylitis in Bangladesh

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Rheumatology & Autoimmunity 2022年第1期2卷 15-21页

作者： md Kamrul H.sajib shamim Ahmed syed A.Haq minhaj R.Choudhury mohammed Uddin Furkan Uddin muhammad s.A.Khan mohammad m.Zaman Department of Rheumatology Dhaka Medical College HospitalDhakaBangladesh Department of Rheumatology Bangabandhu Sheikh Mujib Medical UnivesityDhakaBangladesh Department of Human Genetics Mohammed Bin Rashid University of Medicine and Health SciencesCollege of MedicineDubaiUAE Genetics and Genomic Department NeuroGen HealthcareDhakaBangladesh Department of medicine Sheikh Hasina Institute of Burn and Plastic SurgeryDhakaBangladesh Advisor(Research and Publication) World Health OrganizationDhakaBangladesh

Objectives:To determine the association of Human leukocyte antigen B(HLA‑B)alleles with ankylosing spondylitis and the allelic association of HLAB27 with endoplasmic reticulum aminopeptidase 1(ERAP1)single-nucleotide polymorphism(snP)rs30187 in patients with ankylosing spondylitis(As).methods:We studied 48 consecutively enrolled well-defined As patients and 48 healthy controls recruited from the outpatient clinic of the rheumatology department of Bangabandhu sheikh mujib medical University(BsmmU),Dhaka,*** genotype HLA-B alleles from peripheral blood DnA,we designed sequence-specific primers for polymerase chain ***'s sequencing method was used to detect the ERAP1 rs30187 *** HLA-B allele distributions were compared between cases and *** infer an allelic association between HLA-B27 and ERAP1,allele distributions from both loci were compared using ***-squared test or Fisher's exact test was used to quantify the association,and their strength of association was tested by odds ratio(OR)with 95%confidence interval(CI).Results:The frequency of HLA-B27 was found to be higher in As patients(60.4%)than in healthy controls(8.3%).HLA-B27 allele had an OR of 16.8(95%CI=5.2–54.4)for the development of ***,4%of As patients had both HLA-B27 and *** significant association was found between ERAP1 rs30187 snP and HLA-B27 in patients with As(OR=1.7,95%CI=0.5–5.6).Conclusions:HLA-B27 was significantly associated with As in patients in ***,no association between ERAP1 rs30187 snP and HLA-B27 was observed.

关键词： As Bangladesh ERAP1 rs30187 snP HLA-B HLA-B27

Electrical analysis of single-walled carbon nanotube as gigahertz on-chip interconnects

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Frontiers of Information Technology & Electronic Engineering 2017年第2期18卷 262-271页

作者： Zamshed Iqbal CHOWDHURY md. Istiaque RAHAmAn m. shamim KAIsER Institute of Information Technology Jahangirnagar University Dhaka 1342 Bangladesh Department of Electrical & Electronic Engineering Ahsanullah University of Science & Technology Dhaka 1208 Bangladesh

在未来的高频系统芯片,特别是片上网络的设计中,知识产权模块之间的联系至为关键,而单壁纳米碳管则是其中一种很有前景的纳米结构。电路及系统尺寸的不断缩减限制了对1000 GH级别高频信号特征的利用。本文针对不同结构构型的单壁纳米碳... 详细信息

在未来的高频系统芯片,特别是片上网络的设计中,知识产权模块之间的联系至为关键,而单壁纳米碳管则是其中一种很有前景的纳米结构。电路及系统尺寸的不断缩减限制了对1000 GH级别高频信号特征的利用。本文针对不同结构构型的单壁纳米碳管,对高质量互联中四项重要的四项电参数——阻抗,传播常量,电流密度以及信号延时进行了推导。每个参数均表现出了对其设计互联频率范围和构型的强相关性。与现有理论和实验结果相比,本文所提出的模型在解决下一代高速集成电路互联问题上有其新颖性。

关键词：互联碳纳米管电流密度传播常量特性阻抗片上系统

HLA-DQ and-DR alleles in patients with sLE:A tertiary hospital-based case–control study in Bangladesh

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Rheumatology & Autoimmunity 2023年第1期3卷 43-49页

作者： muhammad s.A.Khan shamim Ahmed Iftekhar H.Bandhan Farhana Zaman mdKamrul H.sajib shirin Tarafder minhaj R.Choudhury syed A.Haq mohammad m.Zaman sheikh Hasina national Institute of Burn and Plastic surgery DhakaBangladesh Department of Rheumatology Bangabandhu Sheikh Mujib Medical UniversityDhakaBangladesh Upazilla Health Complex BancharampurB-BariaBangladesh Department of Community medicine Universal Medical CollegeDhakaBangladesh Department of Rheumatology Dhaka Medical College HospitalDhakaBangladesh Green Life Center for Rheumatic Care and Research DhakaBangladesh World Health Organization DhakaBangladesh

Background:systemic lupus erythematosus(sLE)is a systemic autoimmune disease characterized by the involvement of multiple organs and autoantibody *** study aimed to determine the association of human leukocyte antigen(HLA)-DQ and-DR alleles with sLE at a tertiary hospital in ***:This case-control study was conducted in the Department of Rheumatology,Bangabandhu sheikh mujib medical University(BsmmU),Dhaka,*** patients who fulfilled the 1997 revised American College of Rheumatology classification criteria for sLE were considered cases(n=41).The controls(n=32)were selected from the hospital staff of BsmmU,including doctors and nurses who did not suffer from.an. known rheumatic diseases,and there was no such disease in their first-degree *** chain reaction using a sequence-specific primer(PCRssP)in a low-resolution typing method was carried out on blood samples collected for HLA-DQ and-DR allele ***:The cases and controls had comparable m.an.ages(31 vs.32 years),and most cases were female(95.1%vs.34.4%).The most frequent clinical manifestations were mucocutaneous(85.4%),followed by musculoskeletal(70.7%)and constitutional symptoms(58.5%).The cases had a significantly higher frequency of HLA-DR2 allele compared with healthy controls(70.7%vs.43.8%;odds ratio:3.1;95%confidence interval:1.2-8.2).In addition,HLADQ6 allele was found to have a significant association with mucocutaneous manifestations of the cases(88.9%,P=0.03).Conclusions:Bangladeshi adults having HLA-DR2 may be more susceptible to ***-DQ6 allele might be associated with mucocutaneous manifestations of sLE.

关键词： alleles Bangladesh HLA-DQ HLA-DR systemic lupus erythematosus