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浏览/检索结果: 共25条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 Spatiotemporal variations of atmospheric nitrogen deposition in China during 2008-2020 期刊论文  OAI收割 ATMOSPHERIC ENVIRONMENT, 2023, 卷号: 315, 页码: 15 作者:  Chen, Shiliang;  Chen, Bin;  Wang, Shaoqiang;  Sun, Leigang;  Shi, Hao   |  收藏  |  浏览/下载：37/0  |  提交时间：2024/03/25 Random forest models  Reduced and oxidized nitrogen  NO (x )and SO (2 )emission  NH( 3 )emission  Atmospheric deposition  China   Drip fertigation sustains crop productivity while mitigating reactive nitrogen losses in Chinese agricultural systems: Evidence from a meta-analysis 期刊论文  OAI收割 SCIENCE OF THE TOTAL ENVIRONMENT, 2023, 卷号: 886, 页码: 18 作者:  Zheng, Jing;  Zhou, Minghua;  Zhu, Bo;  Fan, Junliang;  Lin, Hongyu   |  收藏  |  浏览/下载：35/0  |  提交时间：2023/11/09 Crop yield  NH3 volatilization  NO emission  N2O emission  Nitrate leaching   Responses of soil greenhouse gas emissions to no-tillage: A global meta-analysis 期刊论文  OAI收割 SUSTAINABLE PRODUCTION AND CONSUMPTION, 2023, 卷号: 36, 页码: 479-492 作者:  Li, Zhaoxin;  Zhang, Qiuying;  Li, Zhao;  Qiao, Yunfeng;  Du, Kun   |  收藏  |  浏览/下载：26/0  |  提交时间：2023/07/14 No-tillage  GHG emission  Crop yields  Meta-analysis  Climate mitigation   Study of the Urban NO2 Distribution and Emission Assessment Based on Mobile MAX-DOAS Observations 期刊论文  OAI收割 SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 卷号: 41 作者:  Liu Hao-ran;  Hu Qi-hou;  Tan Wei;  Su Wen-jing;  Chen Yu-jia   |  收藏  |  浏览/下载：23/0  |  提交时间：2021/04/26 Mobile MAX-DOAS  NO2  Distribution  Emission flux   Understanding temporary reduction in atmospheric pollution and its impacts on coastal aquatic system during COVID-19 lockdown: a case study of South Asia 期刊论文  OAI收割 GEOMATICS NATURAL HAZARDS & RISK, 2021, 卷号: 12, 期号: 1, 页码: 560-580 作者:  Shafeeque, Muhammad;  Arshad, Arfan;  Elbeltagi, Ahmed;  Sarwar, Abid;  Pham, Quoc Bao   |  收藏  |  浏览/下载：41/0  |  提交时间：2021/04/25 COVID-19  lockdown  human mobility  NO2 emission  aerosol optical depth  chlorophyll-a  land runoff   Understanding temporary reduction in atmospheric pollution and its impacts on coastal aquatic system during COVID-19 lockdown: a case study of South Asia 期刊论文  OAI收割 GEOMATICS NATURAL HAZARDS & RISK, 2021, 卷号: 12, 期号: 1, 页码: 560-580 作者:  Shafeeque, Muhammad;  Arshad, Arfan;  Elbeltagi, Ahmed;  Sarwar, Abid;  Pham, Quoc Bao   |  收藏  |  浏览/下载：21/0  |  提交时间：2021/04/25 COVID-19  lockdown  human mobility  NO2 emission  aerosol optical depth  chlorophyll-a  land runoff   No pulsed radio emission during a bursting phase of a Galactic magnetar 期刊论文  OAI收割 Nature, 2020, 卷号: 587, 页码: 63-65 作者:  HXMT   |  收藏  |  浏览/下载：49/0  |  提交时间：2022/02/08 Astrophysics - High Energy Astrophysical Phenomena  Abstract: Fast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical origin observed at extragalactic distances1-3. It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources4-13, but no convincing evidence has been collected so far14. Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft íray bursts15. One FRB-like event with two peaks (FRB 200428) and a luminosity slightly lower than the faintest extragalactic FRBs was detected from the source, in association with a soft íray/hard-X-ray flare18-21. Here we report an eight-hour targeted radio observational campaign comprising four sessions and assisted by multi-wavelength (optical and hard-X-ray) data. During the third session, 29 soft-íray repeater (SGR) bursts were detected in íray energies. Throughout the observing period, we detected no single dispersed pulsed emission coincident with the arrivals of SGR bursts, but unfortunately we were not observing when the FRB was detected. The non-detection places a fluence upper limit that is eight orders of magnitude lower than the fluence of FRB 200428. Our results suggest that FRB-SGR burst associations are rare. FRBs may be highly relativistic and geometrically beamed, or FRB-like events associated with SGR bursts may have narrow spectra and characteristic frequencies outside the observed band. It is also possible that the physical conditions required to achieve coherent radiation in SGR bursts are difficult to satisfy, and that only under extreme conditions could an FRB be associated with an SGR burst.   Effects of water vapor and temperature on NOx and CO emissions during converter gas combustion 期刊论文  OAI收割 FUEL, 2019, 卷号: 256, 页码: 6 作者:  Zhai YH(翟英华);  Li S(李森);  Yan, WP;  Wei XL(魏小林);  Zhang, LY   |  收藏  |  浏览/下载：96/0  |  提交时间：2019/10/21 Water vapor concentration  Converter gas  Inlet temperature  CO emission  NO emission   Indirect N2O emissions with seasonal variations from an agricultural drainage ditch mainly receiving interflow water 期刊论文  OAI收割 ENVIRONMENTAL POLLUTION, 2018, 卷号: 242, 页码: 480-491 作者:  Tian, Linlin;  Akiyama, Hiroko;  Zhu, Bo;  Shen, Xi   |  收藏  |  浏览/下载：55/0  |  提交时间：2018/10/29 Nitrous oxide (N2O)  Indirect NO emission factor (EF5g)  Intensive precipitation  Nitrate  Leaching  Drainage ditch