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排序方式: 共有76条查询结果,搜索用时 31 毫秒
41.
Sai Xu Wenjing Lu Farooq Mustafa Muhamma Yanting Liu Hanwen Guo Ruihong Meng Hongtao Wang 《环境科学学报(英文版)》2018,30(3):367-374
The denitrifying anaerobic methane oxidation is an ecologically important process for reducing the potential methane emission into the atmosphere. The responsible bacterium for this process was Candidatus Methylomirabilis oxyfera belonging to the bacterial phylum of NC10. In this study, a new pair of primers targeting all the five groups of NC10 bacteria was designed to amplify NC10 bacteria from different environmental niches. The results showed that the group A was the dominant NC10 phylum bacteria from the sludges and food waste digestate while in paddy soil samples, group A and group B had nearly the same proportion. Our results also indicated that NC10 bacteria could exist in a high pH environment (pH 9.24) from the food waste treatment facility. The Pearson relationship analysis showed that the pH had a significant positive relationship with the NC10 bacterial diversity (p < 0.05). The redundancy analysis further revealed that the pH, volatile solid and nitrite nitrogen were the most important factors in shaping the NC10 bacterial structure (p = 0.01) based on the variation inflation factors selection and Monte Carlo test (999 times). Results of this study extended the existing molecular tools for studying the NC10 bacterial community structures and provided new information on the ecological distributions of NC10 bacteria. 相似文献
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43.
Md. Rezaul Karim Habibur Rahman Bejoy Khan Amimul Ahsan Md. Rahadujjaman Shadman Alam Rakibul Hasan Tabriz Tajwar Sharif Saad Farooq 《环境质量管理》2023,32(4):53-63
Potable and equitable drinking water (DW) is a fundamental human right and essential for human health. This study is conducted to assess the groundwater and jar water quality of the roadside restaurants and tea stalls used for drinking by the local people around the Gazipur City area in Bangladesh. Water samples from 173 restaurants and tea stalls are collected. The physico-chemical and biological parameters are analyzed according to the guidelines and standards. The results illustrate that the color, EC, and Mn of 41%, 80%, and 62% of the samples, respectively, exceed the WHO and Environmental Conservation Rules (ECR) standards. In addition, E. coli and total coliform exceeding the threshold standards are found in 47% and 64% of the water samples, respectively. The contamination of DW by fecal coliforms is confirmed and supported by prior studies, which indicates that the DW supplied in restaurants and tea stalls are unsafe because of the possible presence of pathogens. These may cause potential health hazards to consumers from various water-borne diseases. Poor sanitation, unhygienic practices, and improper disposal of wastewater are responsible for the microbial contamination of DW. So, the authorities in charge of these places should take the right regulatory steps, such as regular sanitation inspections, DW quality monitoring, hand-washing practices, and better sanitation in these places. 相似文献
44.
Igalavithana Avanthi Deshani Farooq Muhammad Kim Kye-Hoon Lee Young-Han Qayyum Muhammad Farooq Al-Wabel Mohammad I. Lee Sang Soo Ok Yong Sik 《Environmental geochemistry and health》2018,40(1):559-559
Environmental Geochemistry and Health - Unfortunately, in the original publication of the article, Prof. Yang Sik Ok’s affiliation was incorrectly published. The author’s affiliation is... 相似文献
45.
Kiani Sidra Shaoor Farooq Amjad Ahmad Masroor Irfan Naseem Nawaz Mohsan Irshad Muhammad Asim 《Environmental science and pollution research international》2021,28(43):60477-60494
Environmental Science and Pollution Research - Nuclear, biological, and chemical warfare (NBC) agents cause an inevitable threat to defense forces and civilians. Exposure to these toxic agents... 相似文献
46.
Li Lan Long Meijuan Islam Faisal Farooq Muhammad A. Wang Jian Mwamba Theodore M. Shou Jianyao Zhou Weijun 《Environmental science and pollution research international》2019,26(12):11827-11845
Environmental Science and Pollution Research - Nowadays, modern plant physiology focuses on complex behavior of metal co-contaminants in agrosystems. Keeping this in view, the current study was... 相似文献
47.
Kinetics of carbon mineralization of biochars compared with wheat straw in three soils 总被引:2,自引:0,他引:2
Qayyum MF Steffens D Reisenauer HP Schubert S 《Journal of environmental quality》2012,41(4):1210-1220
Application of biochars to soils may stabilize soil organic matter and sequester carbon (C). The objectives of our research were to study in vitro C mineralization kinetics of various biochars in comparison with wheat straw in three soils and to study their contribution to C stabilization. Three soils (Oxisol, Alfisol topsoil, and Alfisol subsoil) were incubated at 25°C with wheat straw, charcoal, hydrothermal carbonization coal (HTC), low-temperature conversion coal (LTC), and a control (natural organic matter). Carbon mineralization was analyzed by alkali absorption of CO released at regular intervals over 365 d. Soil samples taken after 5 and 365 d of incubation were analyzed for soluble organic C and inorganic N. Chemical characterization of biochars and straw for C and N bonds was performed with Fourier transformation spectroscopy and with the N fractionation method, respectively. The LTC treatment contained more N in the heterocyclic-bound N fraction as compared with the biochars and straw. Charcoal was highly carbonized when compared with the HTC and LTC. The results show higher C mineralization and a lower half-life of straw-C compared with biochars. Among biochars, HTC showed some C mineralization when compared with charcoal and LTC over 365 d. Carbon mineralization rates were different in the three soils. The half-life of charcoal-C was higher in the Oxisol than in the Alfisol topsoil and subsoil, possibly due to high Fe-oxides in the Oxisol. The LTC-C had a higher half-life, possibly due to N unavailability. We conclude that biochar stabilization can be influenced by soil type. 相似文献
48.
Hydrochemical characterization and pollution assessment of groundwater in Jammu Siwaliks,India 总被引:1,自引:0,他引:1
Shakil A. Romshoo Reyaz Ahmad Dar Khalid Omar Murtaza Irfan Rashid Farooq A. Dar 《Environmental monitoring and assessment》2017,189(3):122
Physico-chemical groundwater (GW) parameters were evaluated to understand the hydrogeochemical processes in the Siwalik plains of Jammu and Kashmir, India. During the 2012–2013 post-monsoon (POM) and pre-monsoon (PRM) seasons, GW samples (n = 207) from deep bore wells and shallow open wells were chemically analysed. Cations (Ca2+, Mg2+, Na+, K+ and Fe2+) and anions (HCO3 ?, Cl?, SO4 2? and F?) showed a wide spatio-temporal variation. Results suggest that weathering and dissolution of carbonates and silicate rocks is the main source of water mineralization. The major hydrochemical facies is characterized by Ca-Mg-HCO3 and Ca-HCO3 during the PRM and POM seasons respectively. The presence of sulphate-bearing water in a large number of the samples indicates a significant role of gypsum dissolution and anthropogenic contamination of the GW. Factor analysis (FA) and hierarchical cluster analysis (HCA) revealed that the variability of hydrochemistry is mainly related to rock-water interaction, dissolution of carbonates and other lithological units as well as the influence of anthropogenic activities in the area. Overall, it was found that the GW quality is within the limits of human consumption. The higher concentration of a few chemicals indicates an increasing trend of industrial contamination of the GW. For sustainable development of the portable GW in Siwaliks, it is necessary to minimize the adverse impacts of the anthropogenic and industrial contamination on the GW resources through best management practices and prevent its further contamination to a level that could make GW unsuitable for human uses. 相似文献
49.
Cheema Sardar Alam Khan Muhammad Imran Tang Xianjin Shen Chaofeng Farooq Muhammad Chen Yingxu 《Environmental science and pollution research international》2016,23(18):18129-18136
Environmental Science and Pollution Research - The present study was conducted to evaluate the effect of two non ionic surfactants (Tween 80 and Triton X-100), a biosurfactant (Lecithin), and... 相似文献
50.
Gill Rafaqat A. Zhang Na Ali Basharat Farooq Muhammad A. Xu Jianxiang Gill Muhammad B. Mao Bizeng Zhou Weijun 《Environmental science and pollution research international》2016,23(20):20483-20496