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Sharpening America’s Innovative Edge 科技报告
来源:Center for Strategic & International Studies. 出版年: 2020
作者:  Matthew P. Goodman;  Dylan Gerstel;  William Alan Reinsch;  Scott Miller
收藏  |  浏览/下载:17/0  |  提交时间:2020/10/20
Preparing the Workforce for 2030: A Pillar of Trade Leadership 科技报告
来源:Center for Strategic & International Studies. 出版年: 2020
作者:  William Alan Reinsch;  Jack Caporal;  Matthew P. Goodman;  Scott Miller
收藏  |  浏览/下载:17/0  |  提交时间:2020/10/12
Key Trends in the Global Economy through 2030 科技报告
来源:Center for Strategic & International Studies. 出版年: 2020
作者:  William Alan Reinsch;  Jack Caporal;  Matthew P. Goodman;  Scott Miller
收藏  |  浏览/下载:16/0  |  提交时间:2020/09/22
Estimating US fossil fuel CO2 emissions from measurements of C-14 in atmospheric CO2 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (24) : 13300-13307
作者:  Basu, Sourish;  Lehman, Scott J.;  Miller, John B.;  Andrews, Arlyn E.;  Sweeney, Colm;  Gurney, Kevin R.;  Xu, Xiaomei;  Southon, John;  Tans, Pieter P.
收藏  |  浏览/下载:14/0  |  提交时间:2020/06/09
fossil fuel CO2  radiocarbon  atmospheric inverse modeling  
Hydrothermal (NN)-N-15-N-15 abundances constrain the origins of mantle nitrogen 期刊论文
NATURE, 2020, 580 (7803) : 367-+
作者:  Zhao, Steven;  Jang, Cholsoon;  Liu, Joyce;  Uehara, Kahealani;  Gilbert, Michael;  Izzo, Luke;  Zeng, Xianfeng;  Trefely, Sophie;  Fernandez, Sully;  Carrer, Alessandro;  Miller, Katelyn D.;  Schug, Zachary T.;  Snyder, Nathaniel W.;  Gade, Terence P.;  Titchenell, Paul M.;  Rabinowitz, Joshua D.;  Wellen, Kathryn E.
收藏  |  浏览/下载:14/0  |  提交时间:2020/05/13

Nitrogen is the main constituent of the Earth'  s atmosphere, but its provenance in the Earth'  s mantle remains uncertain. The relative contribution of primordial nitrogen inherited during the Earth'  s accretion versus that subducted from the Earth'  s surface is unclear(1-6). Here we show that the mantle may have retained remnants of such primordial nitrogen. We use the rare (NN)-N-15-N-15 isotopologue of N-2 as a new tracer of air contamination in volcanic gas effusions. By constraining air contamination in gases from Iceland, Eifel (Germany) and Yellowstone (USA), we derive estimates of mantle delta N-15 (the fractional difference in N-15/N-14 from air), N-2/Ar-36 and N-2/He-3. Our results show that negative delta N-15 values observed in gases, previously regarded as indicating a mantle origin for nitrogen(7-10), in fact represent dominantly air-derived N-2 that experienced N-15/N-14 fractionation in hydrothermal systems. Using two-component mixing models to correct for this effect, the (NN)-N-15-N-15 data allow extrapolations that characterize mantle endmember delta N-15, N-2/Ar-36 and N-2/He-3 values. We show that the Eifel region has slightly increased delta N-15 and N-2/Ar-36 values relative to estimates for the convective mantle provided by mid-ocean-ridge basalts(11), consistent with subducted nitrogen being added to the mantle source. In contrast, we find that whereas the Yellowstone plume has delta N-15 values substantially greater than that of the convective mantle, resembling surface components(12-15), its N-2/Ar-36 and N-2/He-3 ratios are indistinguishable from those of the convective mantle. This observation raises the possibility that the plume hosts a primordial component. We provide a test of the subduction hypothesis with a two-box model, describing the evolution of mantle and surface nitrogen through geological time. We show that the effect of subduction on the deep nitrogen cycle may be less important than has been suggested by previous investigations. We propose instead that high mid-ocean-ridge basalt and plume delta N-15 values may both be dominantly primordial features.


  
Why Is Federal Government Action Not Shoring Up Markets? Alternative Explanations 科技报告
来源:Center for Strategic & International Studies. 出版年: 2020
作者:  Scott Kennedy;  William Alan Reinsch;  Scott Miller;  Stephanie Segal;  Matthew P. Goodman;  Daniel H. Rosen
收藏  |  浏览/下载:11/0  |  提交时间:2020/05/13
Wind energy: An ecological challenge 期刊论文
SCIENCE, 2019, 366 (6470) : 1206-1207
作者:  Katzner, Todd E.;  Nelson, David M.;  Diffendorfer, Jay E.;  Duerr, Adam E.;  Campbell, Caitlin J.;  Leslie, Douglas;  Vander Zanden, Hannah B.;  Yee, Julie L.;  Sur, Maitreyi;  Huso, Manuela M. P.;  Braham, Melissa A.;  Morrison, Michael L.;  Loss, Scott R.;  Poessel, Sharon A.;  Conkling, Tara J.;  Miller, Tricia A.
收藏  |  浏览/下载:12/0  |  提交时间:2020/02/17
"Ancient pigs reveal a near-complete genomic turnover following their introduction to Europe (vol 116, pg17231, 2019) 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (25) : 14610-14611
作者:  Frantz, Laurent A. F.;  Haile, James;  Lin, Audrey T.;  Scheu, Amelie;  Geoerg, Christina;  Benecke, Norbert;  Alexander, Michelle;  Linderholm, Anna;  Mullin, Victoria E.;  Daly, Kevin G.;  Battista, Vincent M.;  Price, Max;  Gron, Kurt J.;  Alexandri, Panoraia;  Arbogast, Rose-Marie;  Arbuckle, Benjamin;  Balasescu, Adrian;  Barnett, Ross;  Bartosiewicz, Laszlo;  Baryshnikov, Gennady;  Bonsall, Clive;  Boric, Dian;  Boroneant, Adina;  Bulatovic, Jelena;  Cakirlar, Canan;  Carreterow, Jose-Miguel;  Chapman, John;  Church, Mike;  Crooijmans, Richard;  De Cupere, Bea;  Detry, Cleia;  Dimitrijevic, Vesna;  Dumitrascu, Valentin;  du Plessis, Louis;  Edwards, Ceiridwen J.;  Erek, Cevdet Merih;  Erim-Ozdogan, Ash;  Ervynck, Anton;  Fulgione, Domenico;  Gligor, Mihai;  Gotherstrom, Anders;  Gourichon, Lionel;  Groenen, Martien A. M.;  Helmer, Daniel;  Hongo, Hitomi;  Horwitz, Liora K.;  Irving-Pease, Evan K.;  Lebrasseur, Ophelie;  Lesur, Josephine;  Malone, Caroline;  Manaseryan, Ninna;  Marciniak, Arkadiusz;  Martlew, Holley;  Mashkour, Marjan;  Matthews, Roger;  Matuzeviciute, Giedre Motuzaite;  Maziar, Sepideh;  Meijaard, Erik;  McGovern, Tom;  Megens, Hendrik-Jan;  Miller, Rebecca;  Mohaseb, Azadeh Fatemeh;  Orschiedt, Jorg;  Orton, David;  Papathanasiou, Anastasia;  Pearson, Mike Parker;  Pinhasi, Ron;  Radmanovic, Darko;  Ricaut, Francois-Xavier;  Richards, Mike;  Sabin, Richard;  Sarti, Lucia;  Schier, Wolfram;  Sheikhi, Shiva;  Stephan, Elisabeth;  Stewart, John R.;  Stoddart, Simon;  Tagliacozzo, Antonio;  Tasic, Nenad;  Trantalidou, Katerina;  Tresset, Anne;  Valdiosera, Cristina;  van den Hurk, Youri;  Van Poucke, Sophie;  Vigne, Jean-Denis;  Yanevich, Alexander;  Zeeb-Lanz, Andrea;  Triantafyllidis, Alexandros;  Gilbert, M. Thomas P.;  Schibler, Jorg;  Rowley-Conwy, Peter;  Zeder, Melinda;  Peters, Joris;  Cucchi, Thomas;  Bradley, Daniel G.;  Dobney, Keith;  Burger, Joachim;  Evin, Allowen;  Girdland-Flink, Linus;  Larson, Greger
收藏  |  浏览/下载:18/0  |  提交时间:2020/02/17
Exceptional continental record of biotic recovery after the Cretaceous-Paleogene mass extinction 期刊论文
SCIENCE, 2019, 366 (6468) : 977-+
作者:  Lyson, T. R.;  Miller, I. M.;  Bercovici, A. D.;  Weissenburger, K.;  Fuentes, A. J.;  Clyde, W. C.;  Hagadorn, J. W.;  Butrim, M. J.;  Johnson, K. R.;  Fleming, R. F.;  Barclay, R. S.;  Maccracken, S. A.;  Lloyd, B.;  Wilson, G. P.;  Krause, D. W.;  Chester, S. G. B.
收藏  |  浏览/下载:12/0  |  提交时间:2020/02/17
BIOMEDICINE Multivascular networks and functional intravascular topologies within biocompatible hydrogels 期刊论文
SCIENCE, 2019, 364 (6439) : 458-+
作者:  Grigoryan, Bagrat;  Paulsen, Samantha J.;  Corbett, Daniel C.;  Sazer, Daniel W.;  Fortin, Chelsea L.;  Zaita, Alexander J.;  Greenfield, Paul T.;  Calafat, Nicholas J.;  Gounley, John P.;  Ta, Anderson H.;  Johansson, Fredrik;  Randles, Amanda;  Rosenkrantz, Jessica E.;  Louis-Rosenberg, Jesse D.;  Galie, Peter A.;  Stevens, Kelly R.;  Miller, Jordan S.
收藏  |  浏览/下载:22/0  |  提交时间:2019/11/27