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121.
利用灰色关联分析,可以挑选出与大别山地区地震活动关系密切的影响因子。选取前一年11月太阳黑子数、当年12月地球自转相对变化平均值、当年西太平洋季风活动性数值、当年太阳10.7cm射电流量数值、大别山地区年降雨量平均值、大别山地区年气温平均值、大别山地区采掘业电力消耗值7个因子与大别山地区地震活动数进行灰色关联分析,结果表明:与大别山地区地震活动关联度最大的因子为地球自转相对变化值,与大别山地区的地震活动与该区域的采矿业关联度最低。 相似文献
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Chaojin Jiang Xiaoqian Jiang Lixun Zhang Yuntao Guan 《Frontiers of Environmental Science & Engineering》2020,14(3):47
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Eben Goodale Christos Mammides Wambura Mtemi You-Fang Chen Ranjit Barthakur Uromi Manage Goodale Aiwu Jiang Jianguo Liu Saurav Malhotra Madhava Meegaskumbura Maharaj K. Pandit Guangle Qiu Jianchu Xu Kun-Fang Cao Kamaljit S. Bawa 《Ambio》2022,51(6):1474
As the two largest countries by population, China and India have pervasive effects on the ecosphere. Because of their human population size and long international boundary, they share biodiversity and the threats to it, as well as crops, pests and diseases. We ranked the two countries on a variety of environmental challenges and solutions, illustrating quantitatively their environmental footprint and the parallels between them regarding the threats to their human populations and biodiversity. Yet we show that China and India continue to have few co-authorships in environmental publications, even as their major funding for scientific research has expanded. An agenda for collaboration between China and India can start with the shared Himalaya, linking the countries’ scientists and institutions. A broader agenda can then be framed around environmental challenges that have regional patterns. Coordinated and collaborative research has the potential to improve the two countries’ environmental performance, with implications for global sustainability. 相似文献
127.
控制轨道交通噪声道间声屏障研究 总被引:1,自引:0,他引:1
应用环境噪声预测与分析软件SOUNDPLAN对将设置在上海轨道交通6#线上下行线之间的道间声屏障插入损失进行了模拟计算。计算结果表明,安装道间声屏障可使得距离线路20~30m远的较高层建筑获得2~4.7dB的降噪效果;随着两侧声屏障高度的增加,安装道间声屏障对待测表面的影响范围在缩小;离轨道线路越近,道间声屏障的插入损失越大。 相似文献
128.
Xiongfeng Hu Haifu Jiang Yanjie Zhang 《Journal of environmental science and health. Part. B》2019,54(6):449-458
Fipronil is a broad-spectrum insecticide that has a good control effect on pests of commercial poultry. Although many studies have reported the environmental fate of fipronil, the influence of residual fipronil in poultry waste on biogas production has not been further explored yet. In this article, an experimental comparative study on anaerobic digestion (AD) of chicken manure (CM) and corn straw (CS) with different fipronil concentrations (FCs) was carried at 8% of total solid (TS) and mid-temperature (35?±?1)°C. The results showed that fipronil had a significant effect on biogas production during AD of CM and CS. When the FC is at a low level (≤10?mg·kg?1), the biogas production rate is increased and the digestion period was shortened, while higher FC (≥ 20?mg·kg?1) showed an inhibitory effect. During the monitoring of enzyme activity, low FC showed no significant effect on cellulase and saccharase, but the urease activity increased in the early stage. High FC showed inhibition of activity of cellulase and urease, but the saccharase activity was significantly inhibited until FC reached 40?mg·kg?1. This study also confirms that the environment in anaerobic digester is favorable for the degradation of fipronil, and its half-life is about 15.83?days. 相似文献
129.
Yin Yuanyuan Li Tong Kuang Duyi Lu Yuanan Shen Yan Xu Jun Jiang Songhui Wang Xia 《Environmental science and pollution research international》2019,26(6):5485-5499
Environmental Science and Pollution Research - Nitrosamines (NAms) are potent genotoxic and carcinogenic but widely detected in drinking water. This study aimed to investigate the occurrence of... 相似文献
130.
Based on the data of 30 Chinese provinces for the period from 2004 to 2015, this paper expounds the carbon emissions effect of two-way foreign direct investment (FDI) from the perspective of scale effect and factor market distortions. This study uses Kaya identity to decompose carbon emission and construct simultaneous equations model to empirically examine the factor market distortion and the carbon emission scale effect of two-way FDI. The results show that the inward foreign direct investment (IFDI) increase regional carbon emission through scale effect and also exacerbates factor market distortion in China, whereas the outward FDI trends reduce carbon emission and reduces factor market distortions in China. The study also shows that human capital, research and development (R&D), trade openness, and capital accumulation are important determinants of two-way FDI. Therefore, the study proposes that IFDI policies should focus on acquiring green technologies. In addition, the domestic enterprises should be encouraged to participate in global business. 相似文献