检索结果-南通市图书馆

Problems and prospects of fish farming in the Chattogram Hill Tracts of Bangladesh:Community-based aquaculture might be a right choice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Aquaculture and Fisheries 2024年第2期9卷 306-313页

作者： Saifuddin rana MdNazmul Hasan Abdulla Al Bari Shahida Arfine Shimul SkIstiaque ahmed Sk.Ahmad Al Nahid Department of Fisheries Resource Management Faculty of FisheriesChattogram Veterinary and Animal Sciences UniversityKhulshi4225ChattogramBangladesh Department of Oceanography University of ChittagongChittagong4331Bangladesh

The study was carried out in Matiranga Upazila,Bandarban district,which is considered one of Bangladesh’s major hill tract *** study aimed to identify present farming conditions,prospects,and problems and suitable solutions to the problems of fish *** participatory rapid appraisal tools such as focus group discussion,field visits,and farmers’interviews were used to collect relevant fish farming information in the study *** polyculture method was the most practised aquaculture *** the selected farms,eleven fish species were identified as culture *** transportation cost for seeds purchased from remote areas was high(11%of total seed cost).The average transportation-related mortality of fish fry and fingerlings was 7.2%and 2.8%.Feed cost was found as the major cost(58.4%)in *** and revenue for fish production per decimal varied from BDT 311 to 3528 and BDT 23 to *** of vacant lake,youth and women engagement,integrated aquaculture,the desire of people to engage in aquaculture,and available human resources were found as significant *** major problems identified were lack of hatchery,high feed cost,lack of stakeholder linkage,lack of capital for fish farming,and lack of proper knowledge,guidelines,and consultancy for fish culture.A community-based aquaculture model was proposed to overcome the present challenges and problems in the study *** model may help to expand aquaculture and thus improve the livelihood and socio-economic status of the people of the hilly areas of Bangladesh.

关键词： Hilly area Aquaculture model Tribal people Fish farming prospects

巴基斯坦旁遮普中部横斑腹小鸮的食性(英文)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

动物学报 2007年第1期53卷 64-68页

作者： Muhammad MAHMOOD-UL-HASSAN Mirza Azhar BEG Muhammad MUSHTAQ-UL-HASSAN shahnaz ahmed rana Department of Wildlife and Ecosystem University of Veterinary and Animal SciencesSyed abdul Qader Jilani RoadLahore 54000Pakistan Department of Zoology and Fisheries University of AgricultureFaisalabadPakistan Department of Zoology Govt.College UniversityFaisalabadPakistan

横斑腹小鸮(Athene brama)是巴基斯坦旁遮普中部农业生态系统中最常见但研究匮乏的猛禽。我们通过分析吐弃块(n=498)以了解其季节性和地域性食性变化。结果显示:小型哺乳类占所有食物生物量的98.4%,而昆虫类在数量上占据绝对优势(56.4%... 详细信息

横斑腹小鸮(Athene brama)是巴基斯坦旁遮普中部农业生态系统中最常见但研究匮乏的猛禽。我们通过分析吐弃块(n=498)以了解其季节性和地域性食性变化。结果显示:小型哺乳类占所有食物生物量的98.4%,而昆虫类在数量上占据绝对优势(56.4%)。在小型哺乳类食物中,鼠类(38.8%)是稳定的食物成分。而在昆虫食物中,甲虫最多(42.8%)。横斑腹小亦捕食鼩鼱类(2.3%)和鸟类(1.7%)。昆虫类食物还有蟑螂(6.4%)、臭虫(3.3%)、蝗虫(6.7%)和蚂蚁(3.2%)。小家鼠(Mus musculus)和柔毛鼠(Rattus meltada)在鼠类食物中出现频次最多。不同地区中,Hafizabad的食物多样性最高(2.07),而秋季的食物多样性最高(1.99)。

关键词：甲虫食性多样性家鼠小鼩鼱

Enhancing cotton resilience to challenging climates through genetic modifications

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Cotton Research 2024年第2期7卷 196-206页

作者： ahmed Ali Ijaz KHAN Azeem Iqbal NEGM Mohamed A.M. IQBAL Rida AZHAR Muhammad Tehseen KHAN Sultan Habibullah rana Iqrar Ahmad Department of Plant Breeding and Genetics University of AgricultureFaisalabadFaisalabad 38000Pakistan Cotton Research Institute-Giza GizaEgypt Centre for Advanced Studies in Agriculture and Food Security University of AgricultureFaisalabadFaisalabad 38000Pakistan Centre of Agricultural Biochemistry and Biotechnology University of AgricultureFaisalabadFaisalabad 38000Pakistan School of Agriculture Sciences Zhengzhou UniversityZhengzhou 450000China

Cotton is one of the most important fiber crops that plays a vital role in the textile *** production has been unstable over the years due to climate change induced biotic stresses such as insects,diseases,and weeds,as well as abiotic stresses including drought,salinity,heat,and *** breeding methods have been used to breed climate resilient cotton,but it requires a considerable amount of time to enhance crop tolerance to insect pests and changing climatic conditions.A promising strategy for improving tolerance against these stresses is genetic *** review article discusses the role of genetic engineering in cotton *** essential concepts and techniques include genome editing via clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-associated protein 9(CRISPR-Cas9),overexpression of target genes,downregulation using RNA interference(RNAi),and virus-induced gene silencing(VIGS).Notably,the Agrobacterium-mediated transformation has made significant contributions to using these techniques for obtaining stable transgenic plants.

关键词： Cotton Genome editing Drought Salinity Heat

Evolving strategies: Enhancements in managing eosinophilic esophagitis in pediatric patients

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Pediatrics 2024年第1期13卷 14-22页

作者： ahmed Elghoudi Doaa Zourob Eman Al Atrash Fatima Alshamsi Manal Alkatheeri Hassib Narchi rana Bitar Department of Pediatric Sheikh Khalifa Medical CityAbu DhabiUnited Arab Emirates Division of Pediatric Gastroenterology Sheikh Khalifa Medical CityAbu DhabiUnited Arab Emirates Pediatric Residency Program Sheikh Khalifa Medical CityAbu DhabiUnited Arab Emirates College of Medicine and Health Sciences United Arab Emirates UniversityAlainAbu DhabiUnited Arab Emirates

Eosinophilic esophagitis is a newly recognized disease first described about 50 years *** definition,diagnosis,and management have evolved with new published consensus guidelines and newly approved treatment available to pediatricians,enabling a better understanding of this disease and more targeted treatment for *** describe the definition,presentation,and diagnosis of eosinophilic esophagitis including management,challenges,and future directions in *** definition,diagnosis,and management of eosinophilic esophagitis have evolved over the last 50 *** guidelines and newly approved biologic treatment have enabled pediatricians to better understand this disease and allow for more targeted treatment for *** describe the definition,presentation,diagnosis,management,and treatment in addition to the challenges and future directions of eosinophilic esophagitis management in children.

关键词： Eosinophilic esophagitis Esophagitis Gastroesophageal reflux disease Food allergy Dysphagia

Planar Channelling Criticalities of MeV Protons in Si Crystal： Simulations, Evaluation and Applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2008年第10期25卷 3724-3727页

作者： Mukhtar ahmed rana Methodology Applications Initiative Physics Division PINSTECH Post Office Nilore Islamabad Pakistan

We reports a phase-space structure of MeV proton beam planar channelled along {110} planes in Si crystal using simulation results with the help of a computer code FLUX. The aim is to understand channelling conditions suitable for disorder measurement in crystals. Phase-space distribution of a planar channelled proton beam evolutes in a systematic fashion when it travels into the crystal. Planar channelled beam oscillates between phase-like and space-like conditions in which a part of the beam becomes under phase and space criticalities. These criticality conditions in planar channelling are analysed, explained and discussed with the perspective of defect measurement in crystals.

关键词： the power-law exponents precipitation durative abrupt precipitation change

Etchability of Latent Fission Fragment Tracks in CR-39

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2007年第11期24卷 3107-3110页

作者： Mukhtar ahmed rana Physics Division Directorate of Science PINSTECH P.O. Nilore Islamabad Pakistan

We report the chemical etching behaviour of the CR-39 polymer detector exposed to fission fragments of 252Cf describing etchability of latent tracks, which are like nanocylinders. The fission fragment exposed detectors were etched in 1-7 N NaOH water solutions at temperatures 50-80℃ for 45 min in the case of track length and 180 min in the case of track diameter measurements. The reduced etch rate S （called here etchability） is determined using experimental results for all etching conditions and the etching conditions with the highest reduced etch are obtained. Physics and energetics of bulk and track etching are discussed. Possible effects causing spurious changes in determination of activation energy of etching are investigated.

关键词： coated conductor buffer layer self-epitaxy CeO2

Radiation-Induced Nano-Explosions at the Solid Surface: Near Surface Radiation Damage in CR-39 Polymer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2011年第8期28卷 83-86页

作者： Mukhtar ahmed rana Physics Division Pakistan Institute of Nuclear Science and Technology(PINSTECH)P.O.NiloreIslamabadPakistan

New measurements of fission fragment and alpha particle induced surface damage in the most sensitive and commonly used nuclear track detector CR-39 are presented *** designed and optimized exposure and chemical etching experiments are employed to unfold the structure of radiation induced surface damage(RISD).Delay in the startup of the chemical etching of latent tracks or surface radiation damage is measured and is found to contain important information about the structure of the surface *** atomic scale pictures of RISD and its chemical etching are developed in an empirical *** model and experimental findings coherently compose a realistic picture of early or femtosecond evolution of RISD.

关键词： coherent finding damage

Multi Layered Rule-Based Technique for Explicit Aspect Extraction from Online Reviews

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第12期73卷 4641-4656页

作者： Mubashar Hussain Toqir A.rana Aksam Iftikhar M.Usman Ashraf Muhammad Waseem Iqbal ahmed Alshaflut Abdullah Alourani School of Systems and Technology University of Management and TechnologyLahore54770Pakistan Department of Computer Science and It The University of LahoreLahore54000Pakistan School of Computer Sciences Universiti Sains Malaysia(USM)Penang11800Malaysia Department of Computer Science Comsats University IslamabadLahore54000Pakistan Department of Computer Science GC Women University SialkotPakistan Department of Software Engineering The Superior UniversityLahore53700Pakistan Faculty of Computing and It Albaha UniversityAlbahaSaudi Arabia Department of Computer Science Majmaah UniversitySaudi Arabia

In the field of sentiment analysis,extracting aspects or opinion targets fromuser reviews about a product is a key *** the polarity of an opinion is much more useful if we also know the targeted Aspect or *** based approaches,like dependency-based rules,are quite popular and effective for this ***,they are heavily dependent on the authenticity of the employed parts-of-speech(POS)tagger and dependency *** popular rule based approach is to use sequential rules,wherein the rules formulated by learning from the user’s ***,in general,the sequential rule-based approaches have poor generalization ***,existing approaches mostly consider an aspect as a noun or noun phrase,so these approaches are unable to extract verb *** this article,we have proposed a multi-layered rule-based(ML-RB)technique using the syntactic dependency parser based rules along with some selective sequential rules in separate layers to extract noun ***,after rigorous analysis,we have also constructed rules for the extraction of verb *** verb rules primarily based on the association between verb and opinion *** proposed multi-layer technique compensates for the weaknesses of individual layers and yields improved results on two publicly available customer review *** F1 score for both the datasets are 0.90 and 0.88,respectively,which are better than existing *** improved results can be attributed to the application of sequential/syntactic rules in a layered manner as well as the capability to extract both noun and verb aspects.

关键词： Explicit aspect aspect extraction opinion mining rule-based verb aspects

A compound spike model for formation of nuclear tracks in solids

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2007年第6期18卷 349-353页

作者： Mukhtar ahmed rana Physics Division Directorate of SciencePINSTECHP.O.NiloreIslamabadPakistan

Formation of nuclear tracks in solids has been described as a thermal spike as well as a Coulomb explo- sion ***,formation of nuclear tracks is described as a compound spike including partial roles of both thermal and Coulomb explosion spikes in track *** roles of both spikes depend on atomic and electronic structure of a track detector and deposited energy density in the track detector by the incident charged ***- havior of the cylindrical zone along the path of the incident particle is described mathematically in terms of bulk and individual atomic flow or *** structure of the latent nuclear tracks is described and conditions of con- tinuity and discontinuity of latent tracks are evaluated and *** paper includes mathematical description, analysis and evaluation of the nuclear track formation issue in the light of published experimental and theoretical re- sults,which are useful for users of nuclear track detection technique and researchers involved in ion beam induced materials modification and ions implantation in semiconductors.

关键词：核子轨道探测技术晶体固态径迹探测探测方法