Results 51 to 60 of about 734,199 (300)

Technology Advancements for Active Remote Sensing of Carbon Dioxide from Space using the Active Sensing of CO2 Emissions over Nights, Days, and Seasons (ASCENDS) CarbonHawk Experiment Simulator

EPJ Web of Conferences, 2018
This work describes advances in critical lidar technologies and techniques developed as part of the NASA Active Sensing of CO2 Emissions over Nights, Days, and Seasons CarbonHawk Experiment Simulator system for measuring atmospheric column carbon dioxide
Obland Michael D., Campbell Joel, Kooi Susan, Fan Tai-Fang, Carrion William, Hicks Jonathan, Lin Bing, Nehrir Amin R., Browell Edward V., Meadows Byron, Davis Kenneth J.   +10 more
doaj   +1 more source

Quantifying the Potential for Low-Level Transport of Black Carbon Emissions from Cropland Burning in Russia to the Snow-Covered Arctic

Frontiers in Earth Science, 2017
Short lived aerosols and pollutants transported from northern mid-latitudes have amplified the short term warming in the Arctic region. Among those black carbon is recognized as the second most important human emission in regards to climate forcing ...
Joanne V. Hall, Tatiana V. Loboda
doaj   +1 more source

Engineering Fe-N4 Electronic Structure with Adjacent Co-N2C2 and Co Nanoclusters on Carbon Nanotubes for Efficient Oxygen Electrocatalysis

Nano-Micro Letters, 2023
Highlights Engineering Fe-N4 electronic structure with adjacent Co-N2C2 and Co sub-nanoclusters to optimize the electronic structure of the Fe-N4 active center is first demonstrated.
Mingjie Wu, Xiaohua Yang, Xun Cui, Ning Chen, Lei Du, Mohamed Cherif, Fu-Kuo Chiang, Yuren Wen, Amir Hassanpour, François Vidal, Sasha Omanovic, Yingkui Yang, Shuhui Sun, Gaixia Zhang   +13 more
doaj   +1 more source

Effective transport properties for the pyridine-granular activated carbon adsorption system [PDF]

Brazilian Journal of Chemical Engineering, 2012
In this work, the kinetics of pyridine adsorption onto granular activated carbon was studied from the point of view of an up-scaling process by using the method of volume averaging. The pore and surface effective diffusivities were estimated by supposing simple microscale geometries (ordered media of cylinders and spheres) and those of images processed
Baz-Rodríguez, S. A., Ocampo-Pérez, R., Ruelas-Leyva, J. P., Aguilar-Madera, C. G.   +3 more
openaire   +3 more sources

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Freestanding three-dimensional core–shell nanoarrays for lithium-ion battery anodes

Nature Communications, 2016
Degradation and low conductivity of transition metal oxide anodes cause capacity fading in lithium ion batteries. Here the authors make freestanding 3D copper oxide/carbon nitride core-shell nanoarrays which accommodate volume change, provide electro ...
Guoqiang Tan, Feng Wu, Yifei Yuan, Renjie Chen, Teng Zhao, Ying Yao, Ji Qian, Jianrui Liu, Yusheng Ye, Reza Shahbazian-Yassar, Jun Lu, Khalil Amine   +11 more
doaj   +1 more source

Soil Fungal Community and Potential Function in Different Forest Ecosystems

Diversity, 2022
Forests acting as carbon storage and sequestration play an essential role in the global nutrient cycle, in which fungi are active participants. The forests cover almost all regions from the boreal, temperate to the subtropical and tropical forests.
Xiaoli Li, Zhaolei Qu, Yuemei Zhang, Yan Ge, Hui Sun   +4 more
doaj   +1 more source

Microbiological influences on fracture surfaces of intact mudstone and the implications for geological disposal of radioactive waste [PDF]

, 2011
The significance of the potential impacts of microbial activity on the transport properties of host rocks for geological repositories is an area of active research. Most recent work has focused on granitic environments. This paper describes pilot studies
Aoki, K., Bateman, K., Coombs, P., Harrington, J., Harrison, H., Holyoake, S., Lacinska, A., Milodowski, A.E., Noy, D., Sasaki, Y., Turner, G., Wagner, D., West, J.M., Yoshikawa, H.   +13 more
core   +2 more sources

Function‐driven design of a surrogate interleukin‐2 receptor ligand

FEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang, Zelin Cheng, Teng Li, Fulian Wang, Liangminghui Zhang, Xiuxiu He, Lili Liu, Wei Wang, Aibin Liang, Guang Yang   +9 more
wiley   +1 more source

Levels of ambient air pollution according to mode of transport: a systematic review

The Lancet Public Health, 2017
Background: Controversy exists about the differences in air pollution exposure and inhalation dose between mode of transport. We aimed to review air pollution exposure and inhaled dose according to mode of transport and pollutant and their effect in ...
Magda Cepeda, MSc, Josje Schoufour, PhD, Rosanne Freak-Poli, PhD, Chantal M Koolhaas, MSc, Klodian Dhana, PhD, Wichor M Bramer, Prof Oscar H Franco, PhD   +6 more
doaj   +1 more source