检索结果-南通市图书馆

Journal of Ocean Engineering and Science 2018年第1期3卷 76-81页

作者： Tarikul Islam m.Ali Akbar Abul kalam Azad Department of mathematics Hajee Mohammad Danesh Science and Technology UniversityDinajpurBangladesh Department of Applied mathematics Rajshahi UniversityRajshahiBangladesh

In this article,the analytical solutions to the space-time fractional foam drainage equation and the space-time fractional symmetric regu-larized long wave(SRLW)equation are successfully examined by the recently established rational(G/G)-expansion *** suggested equations are reduced into the nonlinear ordinary differential equations with the aid of the fractional complex ***,the theories of the ordinary differential equations are implemented *** types closed form traveling wave solutions,such as hyper-bolic function,trigonometric function and rational,are constructed by using the suggested method in the sense of conformable fractional *** obtained solutions might be significant to analyze the depth and spacing of parallel subsurface drain and small-amplitude long wave on the surface of the water in a *** is observed that the performance of the rational(G/G)-expansion method is reliable and will be used to establish new general closed form solutions for any other NPDEs of fractional order.

关键词： Nonlinear space-time fractional equations Nonlinear fractional complex transformation Conformable fractional derivative Exact solutions

Difficult-to-culture bacteria in the rhizosphere:The underexplored signature microbial groups

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 2022年第1期32卷 75-89页

作者： Sadaf kalam Anirban BASU Appa Rao PODILE Department of Plant Sciences School of Life SciencesUniversity of HyderabadHyderabad 500046(India)

microorganisms represent a substantial portion of the earth’s biodiversity and biomass, and the plant rhizosphere is an innate reservoir teeming with heterogeneous microbes predominated by bacterial communities. Rhizospheric microbial diversity (genetic, phenotypic, and metabolic) has been extensively studied to understand the key ecological roles played by the microbial members, including plant growth promotion. The application of 16S rRNA gene sequencing and next-generation sequencing (NGS) technologies has revolutionized the discovery of novel bacterial groups that have remained undetected by traditional cultivation-based approaches. Such technological advancements have opened new vistas in our current understanding of predominant but concealed and missed bacterial diversity referred to as difficult-to-culture bacterial lineages, especially the predominant phyla Acidobacteria, Verrucomicrobia,Planctomycetes, and Gemmatimonadetes. Regardless of their ubiquity and prevalence, little is known about their ecophysiology because of the non-availability of culturable members. more recently, there has been increased interest in understanding the cosmopolitan distribution and diversity of the difficult-to-culture bacteria, focusing on their role in driving complex plant-microbial interactions and mobilizing nutrients in soil and their potential as sources of novel bioactive metabolites. As an initial step, we review the distribution and significance of such bacterial phyla in soil, their ecophysiological roles, and their hidden plant growth promoting potential. The ability to select and deploy plant probiotic bacteria from the difficult-to-culture fraction of the bacterial community might open new avenues for improving crop health.

关键词： Acidobacteria ecophysiological roles Gemmatimonadetes microbial diversity Planctomycetes plant growth promotion Verrucomicrobia

Flood-Induced Vulnerabilities and Problems Encountered by Women in Northern Bangladesh

在线全文

学校读者我要写书评

暂无评论

International Journal of Disaster Risk Science 2013年第4期4卷 190-199页

作者： Abul kalam Azad Khondoker mokaddem Hossain mahbuba Nasreen Institute of Disaster management and Vulnerability Studies (IDmVS) University of Dhaka Dhaka 1000 Bangladesh

This study examines flood-induced vulnerabilities among women in northern *** and disadvantaged women are more vulnerable to disasters than men due to the conditions that predispose them to severe disaster *** suffer from physical injuries and are often evicted from their dwellings due to *** in finding adequate shelter,food,safe water,and fuel for cooking,as well as problems in maintaining personal hygiene and sanitation,prevent women from performing their usual roles at *** of these are problems related to women’s gender identity and social *** poor and destitute women remain unemployed during and after *** also suffer from domestic violence and are subject to harassment when taking shelter or refuge at community *** particular vulnerabilities and problems interrupt women’s mitigation efforts and adaptation capacities in disaster risk reduction.

关键词： floods disaster injuries

The closed form solutions of simplified mCH equation and third extended fifth order nonlinear equation

在线全文

学校读者我要写书评

暂无评论

Propulsion and Power Research 2019年第2期8卷 163-172页

作者： A.K.m.Kazi Sazzad Hossain m.Ali Akbar md.Abul kalam Azad Department of mathematics Begum Rokeya UniversityRangpur 5400Bangladesh Department of Applied mathematics University of RajshahiRajshahi 6200Bangladesh

The investigation of closed form solutions for nonlinear evolution equations(NLEEs)is being an attractive subject in the different branches of mathematical and physical *** this article,the enhanced(G'=G)-expansion method has been applied to find the closed form solutions for NLEEs,such as the simplified mCH equation and third extended fifth order nonlinear equations which are very important in mathematical *** closed form solutions with arbitrary parameters are successfully obtained by this method which are expressed in terms of hyperbolic and trigonometric *** is shown that the obtained solutions are more general and fresh and can be helpful to analyze the NLEES in mathematical physics and engineering problems.

关键词： The enhanced(G'/G)-expansion method Simplified mCH equation Third extended fifth order nonlinear equation Nonlinear evolution equation(NLEEs) Closed form wave solutions

Neutron stars:a relativistic study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2018年第3期18卷 1-8页

作者： m..edi kalam Sk.monowar Hossein Sajahan molla Department of Physics Aliah University Department of mathematics Aliah University

We study the inner structure of a neutron star from a theoretical point of view and the outcome results are compared with observed data. We propose a stiff equation of state relating pressure with matter density. From our study we calculate mass（m）,compactness（u） and surface redshift（Zs） for two binary millisecond pulsars,namely PSR J1614–2230 and PSR J1903＋327,and four X-ray binaries,namely Cen X-3,SmC X-1,Vela X-1 and Her X-1,and compare them with recent observational ***,we examine the stability for such a type of theoretical structure.

关键词： stars neutron - stars mass function- equation of state

Religiosity and bank earnings management:Revisiting international evidence

在线全文

学校读者我要写书评

暂无评论

China Journal of Accounting Research 2023年第2期16卷 118-137页

作者： Tanzina Akhter Abul kalam Azad Department of marketing University of DhakaDhaka 1000Bangladesh Department of Business and Technology management Islamic University of TechnologyBoard BazarGazipur 1704Bangladesh

The modernization theory forecasts a sharp declining effect of institutionalized religion on human behavior owing to the extensive economic ***,this prediction is rejected and proved that religious values and beliefs have a pervasive influence on individual *** on this salient evidence,we examine the influence of religious social norms on bank earnings management behavior with regard to ongoing economic *** use 20,715 bank-year observations from 1318 listed banks of eight geographical ***,further,employ an updated dataset of 2007-2021 to resemble the economic prosperity time *** study discards the prediction of the modernization theory and reveals that banks located in countries with high religiosity are less likely to manage their reported *** comparing conventional banks with Islamic ones,conventional banks are found to be less prone to the earnings management practice than that of their Islamic *** also find religiosity to have a greater magnitude of effect on the accounting manipulation in the crisis period than in the post-crisis *** cross-regional differences in religious values bring differential effects on this unethical *** results are robust with the alternative measures of earnings management and alternative model specifications.

关键词： Religiosity Earnings management Economic development Banking

Analytical model of compact star in low-mass X-ray binary with de Sitter spacetime

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2019年第2期19卷 125-132页

作者： Sajahan molla Rabiul Islam md.Abdul Kayum Jafry m..edi kalam Department of Physics Aliah University Department of Physics Shibpur Dinobundhoo Institution (College)

In this article, we suggest a Sitter model in favor of compact stars in low-mass X-ray ***, we have considered the presence of a cosmological constant(on a small scale) to investigate the stellar structure. We conclude that this approach is very suitable for the familiar physical model of compact stars in low-mass X-ray binaries. We calculate the probable radius, compactness(u) and surface redshift(Z_s) of six compact stars in low-mass X-ray binaries, namely Cyg X-2, V395 Carinae/2 S 0921–630, XTE J2123–058,X1822–371(V691 CrA), 4 U 1820–30 and GR mus(XB 1254–690). We also offer a possible equation of state(EOS) for the stellar objects.

关键词： stars:low-mass stars:mass function equation of state

Critical evaluation of socio-cultural and climatic aspects in a traditional community:a case study of Pillayarpalayam weavers'cluster,Kanchipuram

在线全文

学校读者我要写书评

暂无评论

Built Heritage 2022年第1期6卷 94-109页

作者： J.Vijayalaxmi K.C.kalam Arathy Department of Architecture School of Planning and ArchitectureVijayawadaIndia School of Planning and Architecture VijayawadaAn Institute of National Importanceunder the Ministry of EducationGovt.of India4/4ITI RoadVijayawada

Protecting vernacular architecture is important because it reflects a treasure-troveof local information,including climate responses,functions and the socio-cultural *** study aimed to assess and evaluate the spatial and climate response features of the vernacular weavers'settlement in Pillayarpalayam,Kanchipuram,Tamil *** precinct,delineated as a heritage zone under the National Heritage City Development and Augmentation Yojana scheme by the Government of India,consists of a large number of traditional weavers'residences that have cultural and social *** methodology comprised primary documentation and unstructured interviews to assess the architectural and anthropological development of the *** study and analysis were conducted at three levels-dwelling,cluster and *** analysis was carried out to understand the relationship between different weaving activities and their physical *** of building materials and construction techniques was carried out to understand the climate response *** traditional dwellings accommodated the spaces for the weavers to live,as well as functioning as a *** was observed that many houses had undergone alterations to adapt to family needs while some houses had been demolished and replaced by concrete *** traditional craft of weaving was losing its importance and only few weavers in this cluster had retained the traditional living and working *** vernacular dwellings need to be preserved because they represent a unique typology and are evidence of traditional knowledge and *** and recommendations have been proposed to conserve the intangible values such as culture,lifestyles,social factors,and production methods,in addition to conserving the vernacular built heritage and workspaces of this traditional and unique craft industry.

关键词： Climate response Culture Heritage Vernacular architecture Weavers'dwelling

Development of small intestinal barrier function and underlying mechanism in Chinese indigenous and Duroc piglets during suckling and weaning periods

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Animal Nutrition 2024年第1期16卷 429-442页

作者： Sujuan Ding Yating Cheng md Abul kalam Azad Qian Zhu Pan Huang Xiangfeng Kong CAS Key Laboratory of Agro-ecological Processes in Subtropical Region Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic ProcessInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China

This study explored the developmental changes in small intestinal barrier function and the potential regulatory roles of intestinal microbiota and metabolites in different breeds of piglets during suckling and weaning *** black(TB),Xiangcun black(XB),and Duroc(DR)piglets(10 litters per breed;half male and half female)were selected for sampling to evaluate the intestinal barrier-related indexes and intestinal microbiota and metabolites at 1,10,21(weaned),and 24(3 d after weaning)d *** results showed that weaning led to severe shedding of small intestinal microvilli and sparse microvilli arrangement.D-lactate level in the ileum of TB and XB piglets during suckling and weaning periods was lower(Pmine oxidase level at 1 d *** expression level of mucin 1 was higher(Pm of TB and XB piglets than that of DR piglets,and it was the highest in the ileum of TB piglets at 21 d *** expression levels of mucin 2 and mucin 13 were higher(Pmucin2 and mucin 13 in the ileum of TB and XB piglets were higher(Pmetabolites between the three breeds of piglets were mainly related to oxidative phosphorylation,steroid biosynthesis,and bile acid ***,these findings suggest that different pig breeds present differences in the development of the small intestinal barrier *** with DR piglets,TB and XB piglets had higher intestinal permeability during the suckling period and a stronger intestinal mechanical barrier after ***,intestinal microbiota and metabolites are the key factors for developing small intestinal barrier functions in different breeds of piglets.

关键词： Chinese indigenous piglet Duroc piglet Immune function Intestinal barrier function Weaning stress

Genetically engineered organisms for bioremediation of pollutants in contaminated sites

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2014年第8期59卷 703-714页

作者： md.Abul kalam Azad Latifah Amin Nik marzuki Sidik Centre for General Studies Universiti Kebangsaan Malaysia Department of Agricultural Extension Khamarbari Farmgate Faculty of Science and Technology Universiti Kebangsaan Malaysia

Environmental pollution is a major problem which affects biodiversity,public health and ecosystems *** issue cannot currently be solved using conventional technology because these treatments are expensive,ineffective and time *** methods focus unduly on the separation,rather than the destruction of *** use of genetically engineered organisms for bioremediation would be an environmentally-friendly and cost-effective alternative for the management and remediation of pollutants in contaminated *** types of genetically engineered microbes have been developed through recombinant DNA and RNA technologies,these have been utilized for the removal of heavy metals and toxic substances from contaminated *** plants can also mobilize or degrade chlorinated solvent,xenobiotic compounds,explosives and phenolic substances.A symbiotic relationship between genetic engineered microbes and transgenic plants can enhance the effectiveness of bioremediation of contaminated *** review examines recent developments in the use of genetically engineered microbes and transgenic plants for the bioremediation of contaminated *** review will also identify the environmental factors which influence bioremediation by genetically engineered microbes and transgenic plants as well as suggesting future directions for research in these areas.

关键词：生物修复污染场地转基因生物污染物基因工程微生物转基因植物 RNA技术生物多样性