Results 71 to 80 of about 198,347 (304)

Fingerprint of rice paddies in spatial-temporal dynamics of atmospheric methane concentration in monsoon Asia. [PDF]

, 2020
Agriculture (e.g., rice paddies) has been considered one of the main emission sources responsible for the sudden rise of atmospheric methane concentration (XCH4) since 2007, but remains debated.
Dong, Jinwei, Doughty, Russell B, Moore, Berrien, Qin, Yuanwei, Xiao, Xiangming, Xin, Fengfei, Zhang, Geli, Zhang, Yao   +7 more
core   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Ditch emissions partially offset global reductions in methane emissions from peatland drainage

Communications Earth & Environment
Peatlands are globally important carbon sinks but are frequently drained. Drainage activities reduce overall methane emissions; however they are often accompanied by the construction of ditches, which are potential methane emission hotspots.
Dezhao Gan, Zelong Zhang, Huinan Li, Dongsheng Yu, Zheng Li, Ruijun Long, Shuli Niu, Hongchao Zuo, Xianhong Meng, Jinsong Wang, Lei Ma   +10 more
doaj   +1 more source

Inter-model comparison of global hydroxyl radical (OH) distributions and their impact on atmospheric methane over the 2000–2016 period [PDF]

, 2019
The modeling study presented here aims to estimate how uncertainties in global hydroxyl radical (OH) distributions, variability, and trends may contribute to resolving discrepancies between simulated and observed methane (CH4) changes since 2000.
A. Berchet, A. R. Stavert, A. Stenke, A. T. Archibald, A. T. Archibald, B. Josse, B. Zheng, D. A. Hauglustaine, D. A. Plummer, D. Kinnison, E. J. Dlugokencky, E. Rozanov, E. Rozanov, F. M. O'Connor, J. G. Canadell, L. E. Revell, L. E. Revell, M. Deushi, M. I. Hegglin, M. Saunois, N. L. Abraham, N. L. Abraham, O. Kirner, P. Bousquet, P. Jöckel, R. B. Jackson, S. Bekki, S. Strode, S. Strode, S. Szopa, S. Tilmes, V. Marécal, X. Lin, X. Lin, Y. Zhao   +34 more
core   +7 more sources

Offsetting methane emissions — An alternative to emission equivalence metrics

International Journal of Greenhouse Gas Control, 2013
It is widely recognised that defining trade-offs between greenhouse gas emissions using 'emission equivalence' based on global warming potentials (GWPs) referenced to carbon dioxide produces anomalous results when applied to methane. The short atmospheric lifetime of methane, compared to the timescales of CO2 uptake, leads to the greenhouse warming ...
Lauder, A. R., Enting, I. G., Carter, J. O., Clisby, Nathan, Cowie, A. L., Henry, B. K., Raupach, M. R.   +6 more
openaire   +2 more sources

Exploring the Potential of Zero‐Dimensional Carbon Nanomaterials in Photoluminescent, Electrochemiluminescent and Electrochemical Sensors

Advanced Materials Interfaces, EarlyView.
Zero‐dimensional carbon nanomaterials are presented as multifunctional platforms linking structure, property, and sensing performance. Surface engineering and heteroatom doping modulate electron‐transfer and luminescent behavior, enabling electrochemical, photoluminescent, and electrochemiluminescent detection. Fundamental design principles, analytical
Gustavo Martins, Jeferson Luiz Gogola, Ava Gevaerd, Cristiane Kalinke, Paulo Roberto de Oliveira, Fabio Roberto Caetano, Bruno Campos Janegitz, Márcio Fernando Bergamini, Luiz Humberto Marcolino‐Junior   +8 more
wiley   +1 more source

Methane emissions from the Munich Oktoberfest [PDF]

Atmospheric Chemistry and Physics, 2019
Abstract. This study presents the first investigation of the methane (CH4) emissions of a large festival. Munich Oktoberfest, the world's largest folk festival, is a potential source of CH4 as a large amount of natural gas for cooking and heating is used.
J. Chen, J. Chen, F. Dietrich, H. Maazallahi, H. Maazallahi, A. Forstmaier, D. Winkler, M. E. G. Hofmann, H. Denier van der Gon, T. Röckmann   +9 more
openaire   +7 more sources

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Reducing Methane Emissions in Ruminant Production: Methods and Their Impacts [PDF]

E3S Web of Conferences
Introduction: Greenhouse gases contribute significantly to the greenhouse effect, with methane being one of the primary gases. Methane emissions largely stem from ruminant production.
Zhang Zifang
doaj   +1 more source

Stabilization of Single Metal Atoms on Graphitic Carbon Nitride: Synthetic Strategies and Emerging Applications

Advanced Science, EarlyView.
This review highlights recent advancements in stabilizing single metal atoms on graphitic carbon nitride emphasizing innovative synthesis strategies and emerging applications in electrocatalysis, photocatalysis and organic transformations, along with key challenges and future perspective. Abstract Emerging as a new frontier in catalysis science, single‐
Wenyao Zhang, Junjie Cui, Zhenjie Yao, Boyuan Zhu, Nithinraj Panangattu Dharmarajan, Ajayan Vinu, Junwu Zhu   +6 more
wiley   +1 more source