|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Human and ecological risks of metals in soils under different land-use types in an urban environment of Bangladesh显示文摘Trace metal contamination in soil is of great concern owing to its long persistence in the environment and toxicity to humans and other organisms.Concentrations of six potentially toxic trace metals,Cr,Ni,Cu,As,Cd,and Pb,in urban soils were measured in Dhaka City,Bangladesh.Soils from different land-use types,namely,agricultural field,park,playground,petrol station,metal workshop,brick field,burning sites,disposal sites of household waste,garment waste,electronic waste,and tannery wast,and construction waste demolishing sites,were investigated.The concentration ranges of Cr,Ni,Cu,As,Pb,and Cd in soils were 2.4–1258,8.3–1044,9.7–823,8.7–277,1.8–80,and 13–842 mg kg^-1,respectively.The concentrations of metals were subsequently used to establish hazard quotients(HQs)for the adult population.The metal HQs decreased in the order of As>Cr>Pb>Cd>Ni>Cu.Ingestion was the most vital exposure pathway of studied metals from soils followed by dermal contact and inhalation.The range of pollution load index(PLI)was 0.96–17,indicating severe contamination of soil by trace metals.Considering the comprehensive potential ecological risk(PER),soils from all land-use types showed considerable to very high ecological risks.The findings of this study revealed that in the urban area studied,soils of some land-use types were severely contaminated with trace metals.Thus,it is suggested that more attention should be paid to the potential health risks to the local inhabitants and ecological risk to the surrounding ecosystems. | Md.Saiful ISLAM Md.Kawser AHMED Md.Habibullah Al-MAMUN Dennis Wayne EATON | 2020 | Pedosphere2020，30，2： | 2 |
| 2 | Inviting Nature into Academic Learning:Exploring the Possibility to Activate the Introvert Courts inside the University Buildings显示文摘Established on peripheral sub-urban area of Sylhet city,Shahjalal University of Science and Technology is a public university well known for its beautiful natural environment and diversified landscape with green hillocks,waterscape,forests and biodiversity.But,the academic buildings of the campus were planned in an introvert way that the common void courts remain disconnected from the outside natural environment.Although designed with positive intention,most of the courts remain unused maximum the time of a year.As the campus natural environment is getting richer day by day and users prefer to spend more time in outside environment,it is high time to integrate nature into the academic learning.This research aims to explore the possibilities of these void courts to be incorporated with the outside natural environment to enhance joyful learning.A combined approach was adopted as research methodology consists of intensive physical survey,literature study,microclimate analysis,questioner surveys among the users,interviewing the field experts and selective national and international case studies.Lastly,a set recommendation has been proposed considering all the perspectives and issues that the research has identified. | Gourpada Dey Raduan Md.Saiful Islam Prottoy Mushabbir Muttaki Subrata Das | 2022 | Journal of Architectural Environment & Structural Engineering Research2022，5，1： | 0 |
| 3 | Detection of COVID-19 and Pneumonia Using Deep Convolutional Neural Network显示文摘COVID-19 has created a panic all around the globe.It is a contagious dis-ease caused by Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2),originated from Wuhan in December 2019 and spread quickly all over the world.The healthcare sector of the world is facing great challenges tackling COVID cases.One of the problems many have witnessed is the misdiagnosis of COVID-19 cases with that of healthy and pneumonia cases.In this article,we propose a deep Convo-lutional Neural Network(CNN)based approach to detect COVID+(i.e.,patients with COVID-19),pneumonia and normal cases,from the chest X-ray images.COVID-19 detection from chest X-ray is suitable considering all aspects in compar-ison to Reverse Transcription Polymerase Chain Reaction(RT-PCR)and Computed Tomography(CT)scan.Several deep CNN models including VGG16,InceptionV3,DenseNet121,DenseNet201 and InceptionResNetV2 have been adopted in this pro-posed work.They have been trained individually to make particular predictions.Empirical results demonstrate that DenseNet201 provides overall better performance with accuracy,recall,F1-score and precision of 94.75%,96%,95%and 95%respec-tively.After careful comparison with results available in the literature,we have found to develop models with a higher reliability.All the studies were carried out using a publicly available chest X-ray(CXR)image data-set. | Md.Saiful Islam Shuvo Jyoti Das Md.Riajul Alam Khan Sifat Momen Nabeel Mohammed | 2023 | Computer Systems Science & Engineering2023，44，1： | 0 |
| 4 | Invaders’ control on post-disturbance succession in coastal mangroves显示文摘Aims In recent years,coastal mangroves have been frequently affected by large disturbances(cyclones,hurricanes,flooding and tsunamis)and post-disturbance vegetation is often dominated by small stature mangrove,mangrove-associate and non-mangrove species potentially affecting ecosystem functioning.Knowledge on the processes of mangrove vegetation development and recovery(succession)following normal and large disturbances will benefit practitioners in designing robust ecosystem management/restoration plans.Here we propose a conceptual model of disturbance-mediated succession in mangroves.Methods Based on field observations and species’life history traits,we develop conceptual models of mangrove succession under normal disturbance regime and recently experienced increased frequency of large disturbances.We evaluate our conceptual models by conducting a scenario testing experiment.Important Findings We suggest two predominant processes affecting mangrove succession after disturbance:propagule limitation due to damage of seed producing mature trees and dispersal barrier resulting from biological invasion associated with large disturbance.We argue that large disturbances affect mature trees more than the small-stature non-tree(shrubs,herbs and climbers)species creating a larger propagule shortage for mangrove tree species than non-tree species.Secondly,large disturbances facilitate invasion of free-floating aquatics,which may interfere with the flow-facilitated propagule dispersal and seedling establishment of mangrove species.In a scenario testing experiment,we have shown that similar levels of disturbance impact vegetation development and recovery differently depending on the presence or absence of invasive species.We conclude that since biological invasion is one of the major drivers of post-disturbance mangrove succession,the dimension of biological invasion should be included in prediction,management and restoration of mangrove forests. | Shekhar R.Biswas Md.Saiful Islam Khan Azim U.Mallik | 2012 | Journal of Plant Ecology2012，5，2： | 0 |
| 5 | Is the Trade-led Growth Hypothesis Valid for the Kingdom of Saudi Arabia?Evidence from an ARDL Approach显示文摘This study examines the trade-led growth(TLG)hypothesis for the Kingdom of Saudi Arabia.Using time-series annual data for the period 1985-2019,the ARDL approach and Toda-Yamamoto Granger causality test are applied to accomplish the study.The ARDL estimation reveals that trade openness positively causes economic growth in both the long and short run,and the TLG hypothesis is found valid for the Kingdom.The Toda-Yamamoto Granger causality test results have evidenced several unidirectional causalities.Of them,trade openness causes economic growth and supports the ARDL finding and hence the TLG hypothesis for the Kingdom.Moreover,trade openness causes gross fixed capital formation,and the labor force stimulates both economic growth and trade volume.The findings recommend that the Kingdom may increase its trade to reap further benefits and enhance its income growth. | Md.Saiful Islam | 2021 | Fudan Journal of the Humanities and Social Sciences2021，14，3： | 0 |
| 6 | Curculigo recurvata W.T.Aiton exhibits anti-nociceptive and anti-diarrheal effects in Albino mice and an in silico model显示文摘Background: Curculigo recurvata(C. recurvata) is an enthnomedicinally important herb reported to have significant medicinal values. The present study aimed to explore the in vivo and in silico anti-nociceptive and anti-diarrheal effects of a C. recurvate rhizome methanol extract(Me-RCR).Methods: The analgesic effects of Me-RCR were assessed using acetic acid-induced writhing and the formalin-induced flicking test. The drugs were administered intraperitoneally(IP) at doses of 200 and 400 mg/kg body weight(bw). Anti-diarrheal activity was evaluated by assessing intestinal motility, hypersecretion, and fecal score in mice at oral doses of 200 and 400 mg/kg·bw. Computer facilitated analyses for anti-nociceptive and anti-diarrheal activities of three isolated compounds from C. recurvata were undertaken to identify the best-fit phytoconstituents.Results: The Me-RCR showed significant(P <.05) peripheral anti-nociception at the highest dose. The extract inhibited both early and late phases of nociception in the formalin-induced writhing test. In the castor oil-induced diarrhoea model, the extract significantly(P <.05) prolonged the onset time of diarrhoea, inhibited percentage of diarrhoea, and decreased both the volume and weight of intestinal contents. Rates of intestinal fluid accumulation inhibition were(33.61 ± 1.00)% and(46.44 ± 0.89)% at Me-RCR doses of 200 and 400 mg/kg·bw, respectively. Moreover, a significant(P <.05) reduction in gastrointestinal motility was observed. An absorption, distribution, metabolism, excretion and/or toxicity(ADME/T) test showed that the selected compounds yielded promising results, satisfying Lipinski's rule of five for predicting drug-like potential. Notably, of the three phytoconstituents curculigine and isocurculigine possessed the highest affinity for the COX-1 and COX-2. Isocurculigine was also identified as the most effective anti-diarrheal compound in the computer-facilitated model.Conclusion: An extract of the plant C. recurvata showed potential analgesic and antidiarrheal activity due to the presence of one or more active secondary metabolite(s). | Shabbir Ahmad Mst.Samima Nasrin A.S.M.Ali Reza Nishan Chakrabarty Md.Akramul Hoque Sanjida Islam Mohammad Shah Hafez Kabir Syed Mohammed Tareq A.H.M.Khurshid Alam Md.Areeful Haque Md.Saiful Islam Arman | 2020 | Animal Models and Experimental Medicine2020，3，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员