EnvironmentAsia最新文献

Social restriction effects on air pollution: How the PM2.5 concentration changed with lockdown management of COVID-19 pandemic control in Bangkok Thailand 社会限制对空气污染的影响:泰国曼谷新冠肺炎疫情防控的封锁管理下PM2.5浓度的变化

EnvironmentAsia Pub Date : 2021-01-01 DOI: 10.14456/ea.2021.25

T. T. Htwe, S. Thepanondh, S. Kwonpongsagoon, C. Chompunth, K. Jindamanee

{"title":"Social restriction effects on air pollution: How the PM2.5 concentration changed with lockdown management of COVID-19 pandemic control in Bangkok Thailand","authors":"T. T. Htwe, S. Thepanondh, S. Kwonpongsagoon, C. Chompunth, K. Jindamanee","doi":"10.14456/ea.2021.25","DOIUrl":"https://doi.org/10.14456/ea.2021.25","url":null,"abstract":"Under rapid proceeding of COVID-19 pandemic, Thailand government announced lockdown and social restriction in March 2020. With the frustration of pandemic, anthropogenic etiology of air pollution was beneficially assessed on other hands. The study aims at exploring how PM2.5 concentration changed with lockdown management and social restriction as part of COVID-19 control in the Bangkok Metropolitan Region, Thailand. There was PM2.5 concentration reduction of roadside (18.6%) and ambient (9.2%) in COVID-19 lockdown period than the same months of previous consecutive year. Moreover, this study showed a clear decline of PM2.5 during lockdown in both rush and non-rush hours except one roadside area which has a non-significant rising PM2.5 because of trucks activities in some area. Additionally, the probable high concentration during the lockdowns period occurred at calm wind speed, mostly from the south direction, particularly in roadside area indicating the traffic source of PM2.5 in the Conditional Bivariate Probability Function (CBPF) plot which estimate probable direction and source of air pollutant. Although PM2.5 is significantly reduced in the lockdown period, it is still above 66% (33 microgram per cubic meter) of the Thailand standard in CBPF analysis. No specific minimum level of PM2.5 is safe for health. However, it highlights monitoring emission sources and encouraging the community to make concerns about their daily contributing activities of air pollution. © 2021, Thai Society of Higher Eduation Institutes on Environment. All rights reserved.","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"14 1","pages":"80-90"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66672911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Performance of multi-layer perceptron-neural network versus random forest regression for sea level rise prediction 多层感知器-神经网络与随机森林回归在海平面上升预测中的应用

EnvironmentAsia Pub Date : 2020-01-01 DOI: 10.14456/EA.2020.4

T. O. Muslim, A. Ahmed, M. Malek

引用次数: 3

Yield and postharvest qualities of two genotypes of eggplant (Solanum melongena l.) applied with different levels of chicken dung 施用不同水平鸡粪对两个基因型茄子产量和采后品质的影响

EnvironmentAsia Pub Date : 2020-01-01 DOI: 10.14456/EA.2020.25

A. SalasRosario, Reyda Mae R. Godoy, M. SalasFelix, N. Menzies, S. Harper, V. Asio

{"title":"Yield and postharvest qualities of two genotypes of eggplant (Solanum melongena l.) applied with different levels of chicken dung","authors":"A. SalasRosario, Reyda Mae R. Godoy, M. SalasFelix, N. Menzies, S. Harper, V. Asio","doi":"10.14456/EA.2020.25","DOIUrl":"https://doi.org/10.14456/EA.2020.25","url":null,"abstract":"This study was conducted to evaluate the effects of the different levels of chicken dung on the yield, and postharvest qualities of two genotypes of eggplant. The pot experiment was laid-out in a split plot randomized complete block design with chicken dung levels as the main plot and eggplant genotypes (Casino &Morena) as subplot. The levels of chicken dung were divided as T1 (zero), T2 (200 g/plant), T3 (400 g/plant), T4 (600 g/plant), T5 (800 g/plant), T6 (1.0 kg/ plant, and T7 (2.0 kg/ plant). Casino genotype produced higher yield than Morena genotype under Visca agro-climatic condition. The application of 400 grams of chicken dung per plant (T3) showed the highest yield in both genotypes which were significantly different from the control (T1), T2, T6, and T7. This simply means that a cost-effective application of chicken dung at 5 tons per hectare is worth recommending for optimum eggplant production. Casino has a higher oxidation-reduction potential and ascorbic acid values but with lower electrical conductivity than Morena hybrid. This means that Morena contains higher amount of electrolytes with better storability for a longer period of time but with lesser vitamin C content than the Casino genotypes. Ascorbic acid content and electrical conductivity were enhanced by the application of chicken dung which declined beyond 800 grams per plant or at an application of 10 tons per hectare particularly with Casino hybrid for ascorbic acid and Morena hybrid for electrical conductivity. All these results would indicate the importance of organic fertilizer application to attain highest yield with best postharvest qualities of eggplant.","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"13 1","pages":"81-86"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66672886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

EnvironmentAsia Pub Date : 2018-01-01 DOI: 10.14456/EA.2018.15

Nurul Ashikin Binti Mabahwi, H. Ling, Siti Nur Afiqah Mohamed Musthafa, K. Aiyub

引用次数: 7

Fluorometric response of photosynthetic microorganism consortium as potential bioindicator for heavy metals detection in water 光合微生物联合体的荧光响应作为水中重金属检测的潜在生物指标

EnvironmentAsia Pub Date : 2018-01-01 DOI: 10.14456/EA.2018.6

N. A. Khishamuddin, Wong Ling Shing, M. Chai, Betty Wan Niu Voon

引用次数: 10

Auditory profile of undergraduate university motorcyclists: Prevalence of hearing loss and hearing impairment 大学生摩托车手的听觉特征:听力损失和听力障碍的患病率

EnvironmentAsia Pub Date : 2018-01-01 DOI: 10.14456/EA.2018.16

Anila Ali, N. C. Dom, R. Hussain, Subramaniam Karuppannan, M. Abdullah

引用次数: 6

Integration of spatially hydrological modelling on bentong catchment, pahang, peninsular Malaysia using distributed GIS-based rainfall runoff model 基于分布式gis的降雨径流模型在马来西亚半岛彭亨州本东流域的空间水文建模集成

EnvironmentAsia Pub Date : 2017-07-01 DOI: 10.14456/EA.2017.22

M. H. Rosli, W. Sulaiman, N. Jamil, M. Toriman, M. K. Kamarudin

引用次数: 4

Changes of Air Pollution and Climate Forcing Emissions due to Fuel Switching to Gasohol in Motorcycle Fleet in an Urban Area of Thailand 泰国某城市摩托车车队改用汽油引起的空气污染和气候强迫排放的变化

EnvironmentAsia Pub Date : 2017-07-01 DOI: 10.14456/EA.2017.25

Rattapon Onchang, Kittipong Noisopa, Ittipol Pawarmart

引用次数: 3

Assessment of Knowledge, Attitude and Practice of Solid Waste Open Burning in Terengganu, Malaysia 马来西亚丁加奴固体废物露天焚烧的知识、态度和实践评估

EnvironmentAsia Pub Date : 2017-07-01 DOI: 10.14456/EA.2017.18

M. Ariffin, Wan Nor Amalina Wan Yacoob

{"title":"Assessment of Knowledge, Attitude and Practice of Solid Waste Open Burning in Terengganu, Malaysia","authors":"M. Ariffin, Wan Nor Amalina Wan Yacoob","doi":"10.14456/EA.2017.18","DOIUrl":"https://doi.org/10.14456/EA.2017.18","url":null,"abstract":"With more than 40 percent of the world’s rubbish is burned, open burning is a significant source of atmospheric pollution globally and remains one of the main environmental issues and health concerns for many developing nations. Despite having stringent criminal penalties for illegal open burning, Malaysia encounters increasing trend in open burning incidents. A better understanding of the knowledge, attitudinal, and perception towards open burning would inform more effective intervention efforts towards changing this trend. A questionnaire survey to assess knowledge, attitude and practice of public was conducted in Kuala Terengganu. A total of 384 respondents from various demographic backgrounds participated in the survey. Descriptive analysis was used to analyse the respondents’ socio-demographic profiles. Pearson correlation was used to uncover the relationship between knowledge, attitude and practice among the respondents. Results showed that the respondents had good knowledge on open burning and showed positive attitude towards protecting the environment from the problem. However, they displayed lack of practice to tackle the problem in real life. The study also found a weak relationship between knowledge with attitude and practice on open burning. Policy-makers should, therefore, devise intervention programmes that can encourage higher practice rather than merely focusing on raising awareness.","PeriodicalId":39663,"journal":{"name":"EnvironmentAsia","volume":"10 1","pages":"25-32"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47086843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Partitioning of 232Th, 230Th and 228Th in the surface water of northwest peninsular Malaysia coastal waters as tracer for SPM sources 在马来西亚半岛西北部沿海水域地表水中划分232Th、230Th和228Th作为SPM源的示踪剂

EnvironmentAsia Pub Date : 2017-07-01 DOI: 10.14456/EA.2017.20

Nor Faizah M.M.K. Noorulhudha, C. Mohamed

引用次数: 0