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排序方式: 共有897条查询结果,搜索用时 15 毫秒
891.
Fu Hai Yin Dexian Wang Tianhao Gong Wei Zhou Hongfu 《Journal of Polymers and the Environment》2022,30(1):401-414
Journal of Polymers and the Environment - In recent decades, biodegradable polymeric open-porous foams have been engaging increasing interests owing to their biodegradability, porosity and... 相似文献
892.
Tong Shuangmei Yang Linsheng Gong Hongqiang Wang Li Li Hairong Yu Jiangping Li Yonghua Deji Yangzong Nima Cangjue Zhao Shengcheng Gesang Zongji Kong Chang Wang Xiaoya Men Zhuming 《Environmental science and pollution research international》2022,29(18):26498-26512
Environmental Science and Pollution Research - Drinking water is considered to be an important exposure pathway for humans to ingest trace elements; human urine samples are widely accepted... 相似文献
893.
Gong Ping Zhao Youxi Li Ke Tian Huafeng Li Chuanming 《Journal of Polymers and the Environment》2022,30(2):562-568
Journal of Polymers and the Environment - Soy protein isolate (SPI) has the advantages of low cost, easy processing, stable performance and so on. However, the processing temperature of SPI is... 相似文献
894.
Elizabeth J. Golebie Miriam Aczel Jacob J. Bukoski Sophia Chau Natali Ramirez-Bullon Mimi Gong Noah Teller 《Conservation biology》2022,36(1):e13850
Management of mangrove ecosystems is complex, given that mangroves are both terrestrial and marine, often cross regional or national boundaries, and are valued by local stakeholders in different ways than they are valued on national and international scales. Thus, mangrove governance has had varying levels of success, analyzed through concepts such as principles of good governance and procedural justice in decision-making. Although there is substantial research on case studies of mangrove management, global comparisons of mangrove governance are lacking. This research aims to fill this gap by comparing relationships among qualities of governance across mangrove social-ecological systems worldwide. Through a systematic literature search and screening process, we identified 65 articles that discussed mangrove governance and conservation. Case studies in these articles, drawn from 39 countries, were categorized as top-down, bottom-up, or comanaged and thematically coded to assess the influence of eight principles of good governance in mangrove conservation success. Across all three governance systems, the principles of legitimacy, fairness, and integration were most important in determining conservation success or failure. These principles are closely related to the concept of procedural justice, highlighting the importance of stakeholder inclusion throughout all stages of mangrove management. Thus, we recommend clearly defined roles for all governance actors, transparent communication of policy development to stakeholders, fairness in both process and outcome, and careful consideration of sustainable access to conservation resources. 相似文献
895.
Li Lu Peng Chunyan Yang Zicong He Yu Liang Meng Cao Hongmin Qiu Qinghua Song Jingjing Su Youlu Gong Bin 《Environmental science and pollution research international》2022,29(25):37582-37597
Environmental Science and Pollution Research - Mangroves are distributed in coastal and estuarine regions and are characterized as a sink for terrestrial pollution. It is believed that complex... 相似文献
896.
跨界融合构建的遗传工程菌Fhhh及其亲株黄孢显毛平革菌 (PC) ,降解精对苯二甲酸的比降解率受到Mn2 + 、酒石酸铵、H2 O2 、pH共 4因素的影响 .除pH值外 ,其余 3个因素影响 2菌株比降解率大小的排序完全一致 .pH值对PC菌的影响排序处于第 3位 ,对Fhhh则处于第 1位 .Fhhh比降解率比PC高出 11 11% ;mnp基因表达的锰过氧化物酶 (MnP)比活力水平比PC高出 15 2 2 % .降解精对苯二甲酸 4因素优化水平 ,也是mnp基因表达的优化条件 .比降解率与MnP的比活力水平之间有显著或极显著正相关性 (r>r0 .0 5( 4) ,r >r0 .0 1( 4) ) .研究结果为高效处理精对苯二甲酸废水提供了重要的分子生物学依据 相似文献
897.
Patterns and drivers of CH4 concentration and diffusive flux from a temperate river–reservoir system in North China 下载免费PDF全文
Fanyan Yang Jicheng Zhong Shaoming Wang Xiaokang Hu Hongwei Wang Mengyao Tang Min Zhang Chuanzhe Sun Lei Zhang 《环境科学学报(英文版)》2022,34(6):184-197
Freshwater reservoirs are regarded as an important anthropogenic source of methane (CH4) emissions. The temporal and spatial variability of CH4 emissions from different reservoirs results in uncertainty in the estimation of the global CH4 budget. In this study, surface water CH4 concentrations were measured and diffusive CH4 fluxes were estimated via a thin boundary layer model in a temperate river–reservoir system in North China, using spatial (33 sites) and temporal (four seasons) monitoring; the system has experienced intensive aquaculture disturbance. Our results indicated that the dissolved CH4 concentration in the reservoir ranged from 0.07 to 0.58 µmol/L, with an annual average of 0.13 ± 0.10 µmol/L, and the diffusive CH4 flux across the water–air interface ranged from 0.66 to 3.61 μmol/(m2•hr), with an annual average of 1.67 ± 0.75 μmol/(m2•hr). During the study period, the dissolved CH4 concentration was supersaturated and was a net source of atmospheric CH4. Notably, CH4 concentration and diffusive flux portrayed large temporal and spatial heterogeneity. The river inflow zone was determined to be a hotspot for CH4 emissions, and its flux was significantly higher than that of the tributary and main basin; the CH4 flux in autumn was greater than that in other seasons. We also deduced that the CH4 concentration/diffusive flux was co-regulated mainly by water temperature, water depth, and water productivity (Chla, trophic status). Our results highlight the importance of considering the spatiotemporal variability of diffusive CH4 flux from temperate reservoirs to estimate the CH4 budget at regional and global scales. 相似文献