检索结果-南通市图书馆

SCOUR MITIGATION AT BRIDGE PIERS USING SACRIFICIAL PILES

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Sediment Research 2007年第1期22卷 49-59页

作者： M. anisul haque Md. Munsur RAHMAN G.M. Tarekul ISLAM M. Asad HUSSAIN Prof.Institute of Water and Flood Management (IWFM) Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh Assoc. Prof.Institute of Water and Flood Management (IWFM) Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh Lecturer Institute of Water and Flood Management (IWFM) Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh

To mitigate scour around bridge piers, sacrificial piles are economic method where natural processes are involved. The arrangement should be such that scoured materials from the sacrificial piles should have enough volume to fill the scour hole created upstream of the pier in such a way that sediments are trapped inside the scour hole. This concept differs from earlier study made with sacrificial piles that mainly deals to reduce the strength of horseshoe vortex. To determine the effect of sacrificial piles for scour mitigation, alternative arrangements of piles were tested in front of a rectangular pier under clear-water condition and found that when the group of piles is placed at a distance of twice the projected width of the pier, for which percentage of blockage of the pier width is 60%, the scour volume can be reduced upto 61% while the maximum scour depth can be reduced upto 50%.

关键词： Scour mitigation Bridge pier Sacrificial pile Optimum arrangement

Sundarban as a Buffer against Storm Surge Flooding

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Engineering and Technology 2015年第3期3卷 59-64页

作者： Mohiuddin Sakib Fatin Nihal anisul haque Munsur Rahman Mansur Ali Bangladesh University of Engineering and Technology Dhaka Bangladesh

Sundarban, the largest mangrove forest in the world, is known to act as a buffer against the cyclone and storm surge. Theoretically, Sundarban absorbs the initial thrust of the wind and acts to “resist” the storm surge flooding. The role of Sundarban was evident during the cyclone Sidr when the Sundarban solely defended the initial thrust of the cyclonic wind and the resulting storm surge inundation. In doing this, Sundarban sacrificed 30% of its plant habitats. Although no scientific study has yet been conducted, it is generally believed that Sundarban will continuously play its role as a buffer against the cyclone when landfall of the cyclone is at or close to the Sundarban. Considering these facts, the present study mainly focused on a scientific insight into the role of Sundarban as a buffer against the present-day cyclone and storm surge and also its probable role on the impacts of future storms of similar nature but with different landfall locations. The Delft 3D dashboard and flow model are applied to compute the resulting inundation due to cyclone induced storm surge. The results show that Sundarban indeed acts as a buffer against the storm surge inundation when cyclone landfall is at or close to Sundarban.

关键词： Buffer Mangrove Forest Sidr Landfall Roughness

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国与孟加拉国当代陶瓷雕塑比较研究

中国与孟加拉国当代陶瓷雕塑比较研究

作者：安里斯（Md.anisul haque）南京艺术学院

学位级别：硕士

当代陶瓷雕塑在当今的全球艺术中以多种形式表达。它表达了我们的创意想法和想象力。本研究报告对中国和孟加拉国当代陶瓷雕塑进行了比较讨论,旨在通过陶瓷文化的交流促进陶瓷雕塑的进一步发展。本文的写了第一章当代陶瓷雕塑和当代一... 详细信息

当代陶瓷雕塑在当今的全球艺术中以多种形式表达。它表达了我们的创意想法和想象力。本研究报告对中国和孟加拉国当代陶瓷雕塑进行了比较讨论,旨在通过陶瓷文化的交流促进陶瓷雕塑的进一步发展。本文的写了第一章当代陶瓷雕塑和当代一些国际陶瓷雕塑家及其艺术作品、第二章传统中国和孟加拉国陶瓷雕塑的概述、第三章当代中国和孟加拉陶瓷雕塑的探讨、第四章-当代中国和孟加拉国陶瓷雕塑家及其艺术品、第五章当代中国和孟加拉国陶瓷雕塑的异同、第六章我对当代陶瓷雕塑的研究。在对两国的陶瓷雕塑进行比较讨论之后,讨论和展示了我创作的当代陶瓷作品。我的论文阐述了丰富的材料、美学、形式以及独特的工艺对艺术创作的影响,同时展示了我的当代陶艺创作作品,包括在材料、美学和工艺上的探索。以及当代故事如何影响艺术创造力。我认为当今重要的是深入了解制作艺术陶瓷雕塑的原料,这将使当代陶瓷雕塑更具活力。

关键词：当代陶瓷雕塑中国雕塑艺术家孟加拉国雕塑艺术家

Bibliographic survey and comprehensive review on mechanical and durability properties of microorganism based self-healing concrete

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING 2024年第9期18卷 1445-1465页

作者： haque, Md Marghoobul Shelote, Kunal M. Singh, Namrata Gupta, Supratic Indian Inst Technol Delhi Dept Civil Engn New Delhi 110016 India

Concrete is the most widely utilized material for construction purposes, second only to water, in the ever-increasing need for construction globally. Concrete is a brittle material and possesses a high risk of crack formation and consequent deterioration. Cracking, which allows chemicals to enter and can cause concrete structures to lose their physico-mechanical and durability features. Repairing and rehabilitating concrete structures involves high costs and leads to various repair methods including coating, adhesives, polymers, supplementary cementitious materials (SCMs), and fibers. One of the latest technologies is the use of microorganisms in concrete. These added microorganisms lead to calcite precipitation and thereby heal the cracks effectively. This study presents a comprehensive literature survey on bacteria-included concrete, before which a bibliographic survey is performed using VOSViewer software. In addition to regular bacterial concrete, this study focuses on also using SCMs and fibers in bacterial concrete. A detailed literature review with data representation for various mechanical properties including compressive strength (CS), split tensile strength (SS), and flexure strength (FS), along with durability properties including carbonation, water absorption, resistance against chloride ion penetration, gas permeation, and resistance against cyclic freeze-and-thaw is presented. A study on the use of X-ray computed tomography (XCT) in bacterial concrete is highlighted, and the scope for future research, along with identification of the research gap, is presented.

关键词： bacterial concrete bibliographic survey biomineralization carbonation fibers BACTERIAL CARBONATE PRECIPITATION RAPID CHLORIDE PERMEABILITY COMPRESSIVE STRENGTH FLY-ASH CEMENTITIOUS MATERIALS SILICA-FUME PERMEATION PROPERTIES REINFORCED-CONCRETE SURFACE-TREATMENT WATER-ABSORPTION

LOCAL SCOUR ESTIMATION AT BRIDGE SITE: MODIFICATION AND APPLICATION OF LACEY FORMULA

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Sediment Research 2003年第4期18卷 333-339页

作者： Md. Munsur RAHMAN,iwfm.buet.ac.bd at present: Post Doctoral Research fellow, Ujigawa Open Laboratory, Disaster Prevention Research Institute, Kyoto University, Shimomisu, Yoko-Oji, Fushimi-Ku, Kyoto 612-8235, Japan ,M. anisul haque Assistant Professor Institute of Water and Flood Management (IWFM) Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh E-mail: mmrahman Associate Professor Institute of Water and Flood Management (IWFM) Bangladesh University of Engineering and Technology (BUET) Dhaka-1000 Bangladesh

In the recent years, it has been established that b/h or h/b (b = length of the structure in the lateral direction and h = approach flow depth) is the dominant factor for the estimation of local scour depth around abutments and piers. One of the major limitations of the Lacey formula is that it predicts only one value of the scour depth for a specific river because of the absence of important parameters b and h. Therefore, its application is quite uncertain for variable b and h. Considering its limitations and experimental facts of flow concentration and shear stress amplification close to above structures, the original Lacey formula is modified introducing the parameters b and h. The applicability of the original as well as modified Lacey formula is tested to the data collected from major rivers in Bangladesh.

关键词： Local scour depth Piers and abutments Lacey formula Bangladesh

Ionotropic receptors mediate olfactory learning and memory in Drosophila

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2024年第4期31卷 1249-1269页

作者： Md Zeeshan Ali Anushree Aarif Ahsan Mohammad Shamsul Ola Rizwanul haque Jawaid Ahsan Department of Biotechnology Central University of South BiharGayaBiharIndia Department of Radiation Oncology University of MichiganAnn ArborMichiganUSA Department of Biochemistry College of ScienceKing Saud UniversityRiyadhSaudi Arabia

Phenylacetaldehyde(PAH),an aromatic compound,is present in a diverse range of fruits including overripe bananas and prickly pear cactus,the two major host fruits for Drosophila *** acts as a potent ligand for the ionotropic receptor 84a(IR84a)in the adult fruit fly and it is detected by the IR84a/IR8a heterotetrameric *** role in the male courtship behavior through IR84a as an environmental aphrodisiac is of additional *** ***,two distinct kinds of olfactory receptors,that is,odorant receptors(ORs)and ionotropic receptors(IRs),perceive the odorant *** display unique structural,molecular,and functional characteristics in addition to having different evolutionary ***,olfactory cues detected by the ORs such as ethyl acetate,1-butanol,isoamyl acetate,1-octanol,4-methylcyclohexanol,*** as aliphatic esters and alcohols have been employed in olfactory classical conditioning using fruit *** underlines the participation of OR-activated olfactory pathways in learning and memory *** study elucidates that likewise ethyl acetate(EA)(an OR-responsive odorant),PAH(an IR-responsive aromatic compound)too can form learning and memory when associated with an appetitive gustatory *** association of PAH with sucrose(PAH/SUC)led to learning and formation of the long-term memory(LTM).Additionally,the Orco^(1),Ir84a^(MI00501),and Ir8a^(1)mutant flies were used to confirm the exclusive participation of the IR84a/IR8a complex in PAH/SUC olfactory associative *** results highlight the involvement of IRs via an IR-activated pathway in facilitating robust olfactory behavior.

关键词： appetitive conditioning Drosophila melanogaster ethyl acetate ionotropic receptors learning and memory phenylacetaldehyde

Beyond bacteria:Role of non-bacterial gut microbiota species in inflammatory bowel disease and colorectal cancer progression

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第36期30卷 4078-4082页

作者： Hania haque Syeda Warisha Zehra Mohammad Shahzaib Saif Abbas Nazish Jaffar of Medicine Jinnah Sindh Medical UniversityKarachi 75510SindhPakistan Department of Pathology Jinnah Sindh Medical UniversityKarachi 75510SindhPakistan

This letter emphasizes the need to expand discussions on gut microbiome’s role in inflammatory bowel disease(IBD)and colorectal cancer(CRC)by including the often-overlooked non-bacterial components of the human gut *** highlights how viral,fungal and archaeal inhabitants of the gut respond towards gut dysbiosis and contribute to disease *** such as bacteriophages target certain bacterial species and modulate the immune *** viruses found associated include Epstein-Barr virus,human papillomavirus,John Cunningham virus,cytomegalovirus,and human herpes simplex virus type *** such as Candida albicans and Malassezia contribute by forming tissue-invasive filaments and producing inflammatory cytokines,***,mainly methanogens are also found altering the microbial fermentation *** correspondence,thus underscores the significance of considering the pathological and physiological mechanisms of the entire spectrum of the gut microbiota to develop effective therapeutic interventions for both IBD and CRC.

关键词： Gut microbiota Colorectal cancer Inflammatory bowel disease Dysbiosis Bacteriophages Methanogens Fungi

Klippel Trenaunay Syndrome with Angiokeratoma Circumscriptum Naeviforme and Bilateral Congenital Anorchia: A Rare Association

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Pediatrics 2024年第1期14卷 43-49页

作者： Mujammel haque Kalyan Benjamin Gomes Sajib Kumar Talukdhar Mustafizur Rahman Farzana Sharmin Manik Kumar Talukder Department of Paediatrics Bangabandhu Sheikh Mujib Medical University Dhaka Bangladesh

Klippel-Trenaunay syndrome (KTS) is not a common congenital vascular abnormality. A trio of capillary malformation, venous varicosities, and bony or soft-tissue hypertrophy define this syndrome. Significant morbidities associated with this illness include bleeding, deep vein thrombosis, and embolic consequences. Angiokeratoma circumscriptum naeviforme (ACN) is indeed a congenital variant of angiokeratoma that appears as a hyperkeratotic plaque on the lower extremity. Bilateral congenital anorchia (BCA) is the total lack of testicular tissue in a male with a normal phenotype and karyotype. KTS has been linked to ACN. Here we presented an 8-year-old male child who came with a swollen left thigh and the right side of his face with overlying blackish nodules on his left thigh and scrotum. The patient was diagnosed as KTS with angiokeratoma circumscriptum naeviforme and bilateral congenital anorchia based on his history, imaging studies and the typical clinical features of the disease.

关键词： Klippel-Trenaunay Syndrome Angiokeratoma Circumscriptum Neviforme Bilateral Congenital Anorchia

Point-of-care ultrasonography spotlight:Could venous excess ultrasound serve as a shared language for internists and intensivists?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Critical Care Medicine 2024年第2期13卷 126-136页

作者： Anosh Aslam Khan Hasham Saeed Ibtehaj Ul haque Ayman Iqbal Doantrang Du Abhilash Koratala Department of Internal Medicine Monmouth Medical CenterLong BranchNJ 07740United States Department of Internal Medicine Trinitas Regional Medical CenterElizabethNJ 07202United States Department of Anesthesiology Dr.Ruth K M Pfau Civil HospitalKarachi 74400Pakistan Department of Internal Medicine Dow Medical CollegeKarachi 74200Pakistan Division of Nephrology Medical College of WisconsinMilwaukeeWI 53226United States

Point-of-care ultrasonography(POCUS),particularly venous excess ultrasound(VExUS)is emerging as a valuable bedside tool to gain real-time hemodynamic *** modality,derived from hepatic vein,portal vein,and intrarenal vessel Doppler patterns,offers a scoring system for dynamic venous congestion *** an assessment can be crucial in effective management of patients with heart failure *** facilitates diagnosis,quantification of congestion,prognostication,and monitoring the efficacy of decongestive *** such,it can effectively help to manage cardiorenal syndromes in various clinical *** or eVExUS explores additional veins,potentially broadening its *** VExUS demonstrates promising outcomes,challenges persist,particularly in cases involving renal and liver parenchymal disease,arrhythmias,and situations of pressure and volume overload *** in utilizing spectral Doppler is pivotal for clinicians to effectively employ this ***,the integration of POCUS,especially advanced applications like VExUS,into routine clinical practice necessitates enhanced training across medical specialties.

关键词： Point-of-care ultrasonography Ultrasound Venous excess ultrasound Doppler Congestion Heart failure