Results 51 to 60 of about 129,759 (303)

Evapotranspiration and water use efficiency in relation to climate and canopy nitrogen in U.S. forests [PDF]

, 2016
Understanding relations among forest carbon (C) uptake and water use is critical for predicting forest-climate interactions. Although the basic properties of tree-water relations have long been known, our understanding of broader-scale patterns is ...
Anav, Atkin, Badeck, Baldocchi, Baldocchi, Baldocchi, Baldocchi, Baldocchi, Barbour, Barbour, Barbour, Barnard, Beer, Belmecheri, Berry, Betts, Bolster, Bonan, Bonan, Bright, Brugnoli, Buckley, Canadell, Carnicer, Catovsky, Cernusak, Chen, Clark, Craig, Davin, Desai, Dickinson, Dongmann, Donovan, Dore, Evans, Ewers, Farquhar, Farquhar, Farquhar, Farquhar, Farquhar, Federer, Fernández-Martínez, Fernández-Martínez, Flanagan, Flexas, Gessler, Gessler, Grams, Grassi, Guerrieri, Heimann, Jennings, Keenan, Keitel, Kergoat, Kunert, Law, Lee, Leonelli, Lepine, Liang, Loescher, Luyssaert, Lévesque, Magnani, Martin, Martínez-Vilalta, Meinzer, Meir, Michelot, Moffat, Monson, Moreno-Gutiérrez, Niinemets, Niu, Ollinger, Ollinger, Pan, Pan, Papale, Paquette, Ponton, Post, Potter, Powell, Reichstein, Reichstein, Renninger, Richardson, Ripullone, Roden, Roden, Roden, Roman, Sage, Scartazza, Scheidegger, Schulze, Seibt, Siegwolf, Smith, Smith, Song, Sullivan, Tang, Tang, Tardieu, Valentini, Valentini, Wang, Warren, Wehr, Wright, Xiao, Xiao, Xu, Zhang, Zhu   +119 more
core   +3 more sources

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

Advanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

Source apportionment of polycyclic aromatic hydrocarbons and black carbon at the western coastal areas of the Yellow Sea based on isotopic signatures

Ecological Indicators, 2021
The stable and radioactive isotopes (δ13C, Δ14C and δ2H) of black carbon (BC) and polycyclic aromatic hydrocarbons (PAHs) in the sediment from the western coastal areas of the Yellow Sea (i.e.
Yipeng Wang, Rui Zhang, Yuehua Song, Fan Zhang, Junjie Hu, Tiegang Li, James Russell, Xiaoxiao Yu, Jialei Yang, Zhiyong Liu, Yu Li, Minglei Guan, Qi Han, Guihong Li   +13 more
doaj   +1 more source

Biogeochemistry of Stable Carbon Isotopes [PDF]

, 1969
In 1947, in his classical paper on the thermodynamic properties of isotopic substances, H. C. Urey [1] laid the foundation of modern isotope geochemistry. At the same time, A. O. Nier [2] designed a new mass spectrometer which allowed the measurement of small differences in isotope abundance ratios. A modification in the Nier-type mass spectrometer and
openaire   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

Ancient Modeling of Hydrology Based on Comparison of δo18 Carbonate and the δo13 Crbonate Parishan Lake (Fars Province) Dariush Noorollahi M.Sc Climatology University of Shahid Beheshti Dr. Hassan Lashkari Associate Profesor of Natural Geography University of Shahid Beheshti Maria Amirzade Faculty of Earth science University of Shahid Beheshti [PDF]

جغرافیا و توسعه, 2012
Geography and Development 10nd Year - No. 29 - Winter 2013 Received : 31/1/2012   Accepted : 17/7/2012 PP: 28 - 31   Ancient Modeling of Hydrology Based on Comparison of δo18 Carbonate and the δo13 Crbonate Parishan Lake (Fars Province)   Dariush ...
doaj   +1 more source

Centrifugal Separation of Carbon Isotopes Using Heptafluoropropane as Processing Gas

Journal of Isotopes, 2020
The demand for stable isotopes has increased in the field of medical diagnosis, biopharming, quantum communication and so on. Natural carbon has two stable isotopes: 12C (98.89%) and 13C (1.11%). 13C in high abundance is mainly used in tracer field.
SUN Qiming;JIAN Conghui;ZHOU Mingsheng;PEI Gen
doaj   +1 more source

Measurement of excited states in 40Si and evidence for weakening of the N=28 shell gap [PDF]

, 2006
Excited states in 40Si have been established by detecting gamma-rays coincident with inelastic scattering and nucleon removal reactions on a liquid hydrogen target.
A. Gade, B. A. Brown, C. M. Campbell, D. Bazin, D.-C. Dinca, H. Sakurai, H. Suzuki, H. Zwahlen, J. M. Cook, J. R. Terry, K. Starosta, K. Yoneda, M. D. Bowen, M. Horoi, N. Aoi, S. Grevy, S. Kanno, S. Takeuchi, T. Glasmacher, T. Motobayashi, W. F. Mueller   +20 more
core   +2 more sources

Copper Doping Enhances the Activity and Selectivity of Atomically Precise Ag44 Nanoclusters for Photocatalytic CO2 Reduction

Advanced Functional Materials, EarlyView.
By a simple anti‐Galvanic reaction, up to six copper atoms could be preferably doped into the Ag2(SR)5 staple motifs and Ag20 dodecahedral shell of an atomically precise Ag44(SR)30 nanocluster. When anatase TiO2 is used as substrate, the (AgCu)44/TiO2 photocatalyst exhibited much improved activity in photocatalytic CO2 reduction compared to Ag44/TiO2 ...
Ye Liu, Xi Zheng, Xiufan Liu, Tengyuan Gao, Nicola Pinna, Yu Wang   +5 more
wiley   +1 more source

Proton capture cross section of Sr isotopes and their importance for nucleosynthesis of proton-rich nuclides [PDF]

, 2001
The (p,$\gamma$) cross sections of three stable Sr isotopes have been measured in the astrophysically relevant energy range. These reactions are important for the $p$-process in stellar nucleosynthesis and, in addition, the reaction cross sections in the
A. Heger, E. Somorjai, E. Somorjai, F. D. Becchetti, F. G. Perey, F. R. Chloupek, Gy. Gyürky, H. Schatz, H. Sievers, H. Sievers, H.-W. Müller, I. Borbély-Kiss, J. Bork, J. Holmes, J. M. Pearson, J. P. Jeukenne, M. Arnould, M. Arnould, M. Rayet, M. Rayet, P. Demetriou, P. Demetriou, P. E. Koehler, P. Mohr, P. Möller, R. K. Wallace, S. E. Woosley, S. E. Woosley, S. Goriely, S. Goriely, S. Goriely, S. Harissopulos, T. Rauscher, T. Rauscher, T. Rauscher, T. Rauscher, T. Sauter, W. M. Howard, Yu. M. Gledenov, Z. Y. Bao, Zs. Fülöp, Zs. Fülöp   +41 more
core   +2 more sources