Results 131 to 140 of about 2,576,186 (345)

Fused Ring Engineering Induced Topology Control in Covalent Organic Frameworks: Unlocking Promoted Photocatalytic H2O2 Production and Selective Methane Oxidation

Angewandte Chemie, EarlyView.
By modulating the topological structures of two N‐heterocycle‐based covalent organic frameworks, Phen‐TTA with a kgd‐v topology exhibits narrower optical bandgap, lower exciton binding energy, and faster charge‐carrier kinetics compared to O‐TTA with an hcb topology.
Lei Wang, Zhipeng Xie, Xinyi Zeng, Hetao Xu, Mingyue Wang, Jie Yang, Chao Lin, Wandong Xing, Zhengxiao Guo, Xiong Chen   +9 more
wiley   +2 more sources

Satellite-derived methane hotspot emission estimates using a fast data-driven method

, 2016
. Methane is an important atmospheric greenhouse gas and an adequate understanding of its emission sources is needed for climate change assessments, predictions, and the development and verification of emission mitigation strategies. Satellite retrievals
M. Buchwitz, O. Schneising, M. Reuter, J. Heymann, S. Krautwurst, H. Bovensmann, J. Burrows, Hartmut Boesch, Robert J. Parker, P. Somkuti, R. Detmers, O. Hasekamp, I. Aben, A. Butz, C. Frankenberg, Alexander J. Turner   +15 more
semanticscholar   +1 more source

Sustainable Productivity Growth in Agriculture: The Role of Shifts in R&D Investments and Technology

Applied Economic Perspectives and Policy, EarlyView.
ABSTRACT The objective of the paper is to evaluate the long‐term prospects of sustainable productivity growth linked to plausible assumptions on public agricultural R&D investments as the key productivity driver. Second, it investigates the role of changing R&D focus from yield maximization to input saving technologies (fertilizers and pesticides). The
Zuzana Smeets Křístková, Michiel van Dijk, Robert M'Barek, Hans van Meijl, Tomas Ratinger   +4 more
wiley   +1 more source

High Metallicity and Non-equilibrium Chemistry in the Dayside Atmosphere of hot-Neptune GJ 436b

, 2011
We present a detailed analysis of the dayside atmosphere of the hot-Neptune GJ~436b, based on recent Spitzer observations. We report statistical constraints on the thermal and chemical properties of the planetary atmosphere, study correlations between ...
Bakos, Barman, Barman, Borucki, Borysow, Burrows, Burrows, Burrows, Burrows, Butler, Charbonneau, Charbonneau, Charbonneau, Cooper, Deming, Desert, Ford, Fortney, Freedman, Griffith, Hartman, Hubeny, Knutson, Liang, Line, Madhusudhan, Madhusudhan, Mandell, Miller-Ricci, N. Madhusudhan, Noll, Pont, Rogers, S. Seager, Saumon, Saumon, Seager, Seager, Seager, Showman, Spiegel, Stephens, Swain, Swain, Torres, Yung, Zahnle, Zahnle   +47 more
core   +1 more source

Climate Change Mitigation in the Dairy Sector: Uncovering Heterogeneity Through Eco‐Efficiency Clubs

Agribusiness, EarlyView.
ABSTRACT Combining climate change goals with economic targets is crucial for the dairy sector, which is a significant contributor to agricultural greenhouse gas (GHG) emissions worldwide. In this paper, we assess economic and climate change implications of dairy production with panel data of Irish dairy farms from 2013 to 2021.
Doris Läpple, Christian Stetter, Cathal Buckley   +2 more
wiley   +1 more source

Influence of rumen protozoa on methane emission in ruminants: a meta-analysis approach.

Animal, 2014
A meta-analysis was conducted to evaluate the effects of protozoa concentration on methane emission from ruminants. A database was built from 59 publications reporting data from 76 in vivo experiments.
J. Guyader, M. Eugène, P. Nozière, D. Morgavi, M. Doreau, Cécile Martin   +5 more
semanticscholar   +1 more source

Consumers' Willingness to Pay a Premium for Climate‐Friendly Food Production: The Role of Production Method Information and Social Norms

Agribusiness, EarlyView.
ABSTRACT This study examines whether information about production methods and social norms can increase consumers' willingness to pay (WTP) a price premium for food produced using climate‐friendly farming methods. A randomized survey experiment was conducted with 1568 respondents across Denmark, Lithuania, and Spain, who were assigned to one of four ...
Kassa Tarekegn Erekalo, Tove Christensen, Sigrid Denver, Marilena Gemtou, Spyros Fountas, Søren Marcus Pedersen   +5 more
wiley   +1 more source

Nanographene‐Based van der Waals Organic Framework With Permanent Porosity

Angewandte Chemie, EarlyView.
Unlocking record‐breaking porosity in a supramolecular organic framework (SOF). Through the strategic design of a C3‐symmetric nanographene, a robust supramolecular framework is achieved via exclusively weak van der Waals forces. This metal‐free scaffold reaches a benchmark BET surface area of 1108 m2 g−1 –the highest to date for this class–combining ...
Arturo Oró, Rubén Turo‐Cortés, Josefina Perles, José Sánchez Costa, Jesús M. Fernández‐García, Nazario Martín   +5 more
wiley   +2 more sources

Greenhouse gas emissions from agriculture in the EU: A spatial assessment of sources and abatement costs [PDF]

Agriculture contributes significantly to the emissions of greenhouse gases in the EU. By using a farm-type, linear-programming based model of the European agricultural supply, we first assess the initial levels of methane and nitrous oxide emissions at ...
de Cara, Stephane, Houze, Martin, Jayet, Pierre-Alain   +2 more
core   +1 more source

EU Peatlands: Current Carbon Stocks and Trace Gas Fluxes [PDF]

, 2004
Peatlands in Europe has formed a significant sink for atmospheric CO2 since the last glacial maximum. Currently they are estimated to hold ca. 42 Gt carbon in the form of peat and are therefore a considerable component in the European carbon budget.
Byrne, K., Chojnicki, B., Christensen, T., Drösler, M., Freibauer, A., Friborg, T., Frolking, S., Lindroth, A., Mailhammer, J., Malmer, N., Selin, P., Turunen, J., Valentini, R., Zetterberg, L.   +13 more
core   +1 more source