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A cross sectional study on antibiotic resistance pattern of Salmonella typhi clinical isolates from Bangladesh

Asian Pacific Journal of Tropical Biomedicine 2014年第4期4卷 306-311页

作者： Adnan Mannan Mohammad shohel sultana rajia Niaz Uddin Mahmud Sanjana Kabir Imtiaj Hasan Department of Genetic Engineering and Biotechnology Faculty of Biological SciencesUniversity of Chittagong Department of Pharmacy North South University Department of Pharmacy Varendra University Department of Computer Science & Engineering BGC Trust University Bangladesh Department of Biochemistry and Molecular Biology Rajshahi University Laboratory of Glycobiology and Marine Biochemistry Department of Life and Environmental System ScienceGraduate School of Nano BiosciencesYokohama City University

Objective:To investigate and compare the resistance and sensitivity of Salmonella typhi samples to commonly used antibiotics in three major divisions of Bangladesh and to evaluate the gradually developing resistance ***:The antibiotic susceptibility of 70 clinical isolates collected from blood,sputum,urine and pus samples were identified by specific antisera and with standard biochemical *** patients were divided into 5 age *** and resistance was also tested by KirbyBauer disc-diffusion method using 12 regularly used ***:Antibiotic susceptibility test demonstrated that 64.28%isolates of Salmonella typhi were multidrug *** study suggests that the clinical samples were mostly resistant against nalidixic acid with all age groups and in all three divisions with similar resistance *** is more common among adult people(30-40 years)and children(0-10 years).Salmonella typhi was mostly sensitive against gentamycin,chloramphenicol and ***:Although the population density of Dhaka region is markedly higher than Rajshahi and Chittagong regions,no significant difference in resistance pattern was *** rate of multidrug resistance is a matter of *** should reconsider before prescribing nalidixic acid and *** molecular study is needed to reveal the genomic and proteomic basis of resistance.

关键词： Bangladesh Salmonella typhi Resistance Susceptibility Antibiotic

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Status and economics of fish markets in Rajshahi City Corporation of Rajshahi,Bangladesh

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Journal of Coastal Life Medicine 2015年第4期 302-306页

作者： Md.Istiaque Hossain rajia sultana Murshida Khatun Department of Fisheries Faculty of AgricultureUniversity of RajshahiRajshahiBangladesh

Objective:To understand the existing fish distribution and marketing systems,assess marketing costs and margins and identify constraints of fish marketing ***:Data were collected from three different markets by fishermen,commission agents,wholesalers,retailers,day laborers *** questionnaire interviews and participatory approach during June to September,***:Four types of marketing channel were identified from farmers to consumers in all the three fish markets through a number of *** daily supply of total fish in Binodpur Market,Talaimari Market and Shaheb Market was estimated 0.8-1 ton,0.2-0.3 ton and 8-8.1 ton,***,most of the fish(75%)is imported from outside;the local supply amount is only 25%.The total marketing cost of wholesalers and retailers of the three markets were$8.58 and$6.47 per day,*** average marketing margin of the wholesalers and retailers of the three markets were$0.18 and$0.25 per kg *** of fisherman,wholesaler,retailer and day laborer was estimated at$350,$9.75,$6.48,and$1.69,***:Traders have broadly improved their food consumption,standards of living,purchasing power,choice and ability as an economic sector.

关键词： Fish marketing system Marketing cost Marketing margin Fish wholesalers Retailers Constraints

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Cosmology of a Chaplygin Gas Model Under f(T)Gravity and Evolution of Primordial Perturbations

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Research in Astronomy and Astrophysics 2023年第6期23卷 187-198页

作者： Sanjeeda sultana Surajit Chattopadhyay Department of Mathematics Amity University KolkataMajor Arterial RoadAction Area IIRajarhatNew TownKolkata 700135India

This paper reports a detailed study of generalized Chaplygin gas(GCG)with power law form of scale factor and truncated form of the scale factor using binomial expansion in both interacting and non-interacting scenarios along with its cosmological consequences,studied in terms of equation of state(EoS)*** the non-interacting scenario,the EoS parameter behaves as quintessence in both forms of the scale *** the interacting scenario,the EoS parameter behaves as phantom and for the truncated form of the scale factor,it violates the constraints of the positive parameterα.The cosmological implementation of GCG interacting with pressureless dark matter is investigated in the framework of f(T)modified gravity,where T is the torsion scalar in *** interaction term is directly proportional to the GCG density with positive coupling *** f(T)gravity,the EoS is behaving like *** stability of the reconstructed model is investigated and it is found to be stable against small gravitational perturbations,i.e.,the squared speed of sound is non-negative and an increasing function of cosmic time *** have observed that our reconstructed f(T)model satisfies one of the sufficient conditions of a realistic reconstructed model and it is consistent with the CMB constraints and primordial *** of primordial perturbations has also been analyzed and the self-interacting potential has been found to be an increasing function of cosmic time t.

关键词： (cosmology:)dark energy cosmology:theory (cosmology:)cosmological parameters

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Dynamic Characteristics of a Microhollow Cathode Sustained Discharge with Split Third Electrodes for Potential Flow Application to Flow Velocimetry

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Chinese Physics Letters 2014年第9期31卷 107-110页

作者： Sharmin sultana Jichul Shin Institute of E-vehicle Technology University of Ulsan Ulsan 680-749 Korea Department of Aerospace Engineering University of Ulsan Ulsan 680-749 Korea

The dynamic behavior of a microhollow cathode sustained discharge with split third electrodes is experimentally investigated. The sustained discharge swells isotropically in the presence of a small amount of argon gas flow that is not clearly detectable with a conventional single third electrode. At high flow rates, the sustained discharge transitions to a fast-moving constricted discharge with an are shape. The modified discharge structure causes a shift in current distribution over the third electrodes, and the current peak location varies linearly with the flow rate over a certain flow range. Such linear behavior may be applied to in situ flow velocity measurement.

关键词： Velocity measurement

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Bayesian Optimized LightGBM model for predicting the fundamental vibrational period of masonry infilled RC frames

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Frontiers of Structural and Civil Engineering 2024年第7期18卷 1084-1102页

作者： Taimur RAHMAN Pengfei ZHENG Shamima sultana Department of Civil Engineering World University of BangladeshDhaka 1230Bangladesh School of Civil Engineering Zhengzhou UniversityZhengzhou 450001China Department of Computer Science&Engineering University of Asia PacificDhaka 1205Bangladesh

The precise prediction of the fundamental vibrational period for reinforced concrete(RC)buildings with infilled walls is essential for structural design,especially earthquake-resistant *** learning models from previous studies,while boasting commendable accuracy in predicting the fundamental period,exhibit vulnerabilities due to lengthy training times and inherent dependence on pre-trained models,especially when engaging with continually evolving data *** predicament emphasizes the necessity for a model that adeptly balances predictive accuracy with robust adaptability and swift data *** latter should include consistent re-training ability as demanded by realtime,continuously updated data *** research implements an optimized Light Gradient Boosting Machine(LightGBM)model,highlighting its augmented predictive capabilities,realized through the astute use of Bayesian Optimization for hyperparameter tuning on the FP4026 research data set,and illuminating its adaptability and efficiency in predictive *** results show that the R^(2) score of LightGBM model is 0.9995 and RMSE is 0.0178,while training speed is 23.2 times faster than that offered by XGBoost and 45.5 times faster than for Gradient ***,this study introduces a practical application through a streamlit-powered,web-based dashboard,enabling engineers to effortlessly utilize and augment the model,contributing data and ensuring precise fundamental period predictions,effectively bridging scholarly research and practical applications.

关键词： masonry-infilled RC frame fundamental period LightGBM FP4026 research dataset machine learning data-driven approach Bayesian Optimization

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Genetic Diversity in ex-situ Conserved Lens culinaris for Botanical Descriptors, Biochemical and Molecular Markers and Identification of Landraces from Indigenous Genetic Resources of Pakistan

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Journal of Integrative Plant Biology 2008年第4期50卷 484-490页

作者： Tayyaba sultana Abdul Ghafoor Government College University Faisalabad PakistanPlant Genetic Resources Program Institute of Agri Biotechnology and Genetic Resources National Agricultural Research Centre Islamabad Pakistan Government College University Faisalabad Pakistan

Lentil, one of the oldest legumes was investigated for diversity based on botanical descriptors, total seed proteins, isozymes and random amplified polymorphic DNA （RAPD） markers. About one fourth of accessions were heterogeneous for botanical descriptors and a seed protein profile. The germplasm collected from the province of Baluchiatan revealed the prevalence of indigenous landraces as high diversity was observed for all of the techniques. Diversity explored through various techniques revealed validity irrespective of the sample size or geographic pattem, RAPD being the best choice for investigating both inter- and intra-acceaaion variation in lentil. Although all of the techniques were able to resolve genetic diversity in lentil, isozymea and seed proteins gave low levels of genetic diversity, suggesting that more investigation into isozymea of specific proteins is required. RAPD is the best option for determining inter- and intra-acceaaion variation, and will be required to extend germplaama and primers to continue the study of botanical descriptors.

关键词： DNA marker genetic resource lentil sodium dodecyl sulfate-polyacrylamide gel electrophoresis.

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Effect of pollution on DNA damage and essential fatty acid profile in Cirrhinus mrigala from River Chenab

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Chinese Journal of Oceanology and Limnology 2017年第3期35卷 572-579页

作者： Bilal HUSSAIN Tayyaba sultana Salma sultana K.A.AL-GHANIM Shahid MAHBOOB Department of Zoology Government College University Department of Zoology College of Science King Saud University

The objective of this study was to evaluate the effect of anthropogenic pollution on DNA damage and the fatty acid profile of the bottom dweller fish （Cirrhinus mr^gala）, collected from the River Chenab, in order to assess the effect of the toxicants on the quality of the fish meat. The levels ofCd, Hg, Cu, Mn, Zn, Pb, Cr and Sn and of phenols from this river were significantly higher than the permissible limits set by the USEPA. Comet assays showed DNA damage in Cirrhinus mr^gala collected from three different sampling sites in the polluted area of the river. Significant differences were observed for DNA damage through comet assay in fish collected from polluted compared to control sites. No significant differences were observed for DNA damage between farmed and fish collected from upstream. The micronucleus assay showed similar trends. Fish from the highly polluted sites showed less number of fatty acids and more saturated fatty acids in their meat compared to fish from less polluted areas. Several fatty acids were missing in fish with higher levels of DNA in comet tail and micronucleus induction. Long-chain polyunsaturated fatty acids, eicosapentaenoic acid （20：5n-3） was found missing in the fish from polluted environment while it was found in considerable amount in farmed fish 7.8±0.4%. Docosahexaenoic acid （22：6n-3） also showed significant differences as 0.1±0.0 and 7.0±0.1% respectively, in wild polluted and fanned fishes.

关键词： habitat fish comet assay micronucleus assay fatty acids

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Predicting herbicides concentrations in paddy water and runoff to the river basin

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Journal of Environmental Sciences 2005年第4期17卷 631-636页

作者： PARVEEN sultana KOHGUCHI Testuyuki BISWAS Moloy NAKAGOSHI Nobukazu Graduate School for International Development and Cooperation(IDEC) Hiroshima University Kagamiyama 1-5-1 Higashi Hiroshima 739-8529JapanHiroshima Prefecture Agriculture Research CenterHaraHachihonmatuHigashi Hiroshima 739-0151 JapanGraduate School for International Development and Cooperation(IDEC) Hiroshima University Kagamiyama 1-5-1 Higashi Hiroshima 739-8529JapanDepartment of Environmental Studies IDECHiroshima UniversityHigashi HiroshimaJapan 739-8529

This study was conducted to investigate the dissipation pattern and runoff of herbicides to the river basin from the paddy fields. Pesticide paddy field model(PADDY) was applied to predict herbicide concentration in paddy fields. A field study was conducted in a paddy farm of Higashi Hiroshima City, Hiroshima Prefecture, Japan in the year of 2003 paddy season. The herbicides were mefenacet, thiobencarb, and bensulfuron methyl. The sample water was analyzed by using gas chromatography and HPLC after solid phase extraction. Predicted dissipation rate of thiobencarb in paddy water was higher(DT_ 50 = 4 36) than that measured, with a lower k value(-0 069). Two weeks after application no thiobencarb was detected in the drainage channel and down stream. In the down stream, thiobencarb was detected until 3 d after application, with a range of 0 02% to 0 08% of applied herbicide. The predicted dissipation rate(k) and half-life(DT_ 50 ) of mefenacet was not significantly different from that of measured. In the drainage channel, upstream and downstream mefenacet was found during the whole study period. In downstream, the maximum concentration of mefenacet was present 0 61% of applied in the paddy field on 3DAH. The dissipation rate(k) of BSM varied from -0 0860 to -0 1059 to with half-life(DT_ 50 ) 3 5 and 2 84 d. In upstream water, no BSM was detected except trace amounts(0 01 μg/L) at 3 d after application. However, in the drainage channel 8%, 6% and 1 58% of applied BSM was present at 0, 1 and 3 d after application respectively. In the down stream, the highest concentration was 1 06%, shortly after application.

关键词： paddy field pesticide paddy field model(PADDY) herbicide dissipation runoff

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Wheat leaf senescence and its regulatory gene network

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The Crop Journal 2021年第4期9卷 703-717页

作者： Nigarin sultana Shahidul Islam Angela Juhasz Wujun Ma State Agriculture Biotechnology Centre Murdoch UniversityPerthWA 6150Australia

Wheat leaf senescence is a developmental process that involves expressional changes in thousands of genes that ultimately impact grain protein content(GPC), grain yield(GY), and nitrogen use *** onset and rate of senescence are strongly influenced by plant hormones and environmental factors e.g. nitrogen availability. At maturity, decrease in nitrogen uptake could enhance N remobilization from leaves and stem to grain, eventually leading to leaf senescence. Early senescence is related to high GPC and somewhat low yield whereas late senescence is often related to high yield and somewhat low GPC. Early or late senescence is principally regulated by up and down-regulation of senescence associated genes. Integration of external and internal factors together with genotypic variation influence senescence associated genes in a developmental age dependent manner. Although regulation of genes involved in senescence has been studied in rice, Arabidopsis, maize, and currently in wheat, there are genotypespecific variations yet to explore. A major effort is needed to understand the interaction of positive and negative senescence regulators in determining the onset of senescence. In wheat, increasing attention has been paid to understand the role of positive senescence regulator, e.g. GPC-1, regulated gene network during early senescence time course. Recently, gene regulatory network involved early to late senescence time course revealed important senescence regulators. However, the known negative senescence regulator Ta NAC-S gene has not been extensively studied in wheat and little is known about its value in breeding. Existing data on senescence-related transcriptome studies and gene regulatory network could effectively be used for functional study in developing nitrogen efficient wheat varieties.

关键词： Wheat(Triticum aestivum L.) Senescence Nitrogen use efficiency NAC transcription factor Stay-green

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Elastic Optimization for Stragglers in Edge Federated Learning

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Big Data Mining and Analytics 2023年第4期6卷 404-420页

作者： Khadija sultana Khandakar Ahmed Bruce Gu Hua Wang Institute for Sustainable Industries and Liveable Cities(ISILC) Victoria UniversityMelbourne 3011Australia Intelligent Technology Innovation Lab(ITIL) Institute for Sustainable Industries and Liveable Cities(ISILC)Victoria UniversityMelbourne 3011Australia. Shandong Computer Science Center(National Supercomputer Center) Jinan 250101China

To fully exploit enormous data generated by intelligent devices in edge computing,edge federated learning(EFL)is envisioned as a promising *** distributed collaborative training in EFL deals with delay and privacy issues compared to traditional centralized model ***,the existence of straggling devices,responding slow to servers,degrades model *** consider data heterogeneity from two aspects:high dimensional data generated at edge devices where the number of features is greater than that of observations and the heterogeneity caused by partial device *** large number of features,computation overhead on the devices increases,causing edge devices to become *** incorporation of partial training results causes gradients to be diverged which further exaggerates when more training is performed to reach local *** this paper,we introduce elastic optimization methods for stragglers due to data heterogeneity in edge federated ***,we define the problem of stragglers in ***,we formulate an optimization problem to be solved at edge *** customize a benchmark algorithm,FedAvg,to obtain a new elastic optimization algorithm(FedEN)which is applied in local training of edge *** mitigates stragglers by having a balance between lasso and ridge penalization thereby generating sparse model updates and enforcing parameters as close as to local *** have evaluated the proposed model on MNIST and CIFAR-10 *** experiments demonstrate that our approach improves run time training performance by achieving average accuracy with less communication *** results confirm the improved performance of our approach over benchmark algorithms.

关键词： edge computing federated learning distributed machine learning regularization stragglers

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