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Opinion: The germicidal effect of ambient air (open-air factor) revisited 期刊论文
Atmospheric Chemistry and Physics, 2021
作者:  R. Anthony Cox, Markus Ammann, John N. Crowley, Paul T. Griffiths, Hartmut Herrmann, Erik H. Hoffmann, Michael E. Jenkin, V. Faye McNeill, Abdelwahid Mellouki, Christopher J. Penkett, Andreas Tilgner, and Timothy J. Wallington
收藏  |  浏览/下载:10/0  |  提交时间:2021/09/14
Evidence from South Africa for a protracted end-Permian extinction on land 期刊论文
Proceedings of the National Academy of Science, 2021
作者:  Pia A. Viglietti;  Roger B. J. Benson;  Roger M. H. Smith;  Jennifer Botha;  Christian F. Kammerer;  Zaituna Skosan;  Elize Butler;  Annelise Crean;  Bobby Eloff;  Sheena Kaal;  Joël Mohoi;  William Molehe;  Nolusindiso Mtalana;  Sibusiso Mtungata;  Nthaopa Ntheri;  Thabang Ntsala;  John Nyaphuli;  Paul October;  Georgina Skinner;  Mike Strong;  Hedi Stummer;  Frederik P. Wolvaardt;  Kenneth D. Angielczyk
收藏  |  浏览/下载:12/0  |  提交时间:2021/04/29
Unexpected nascent atmospheric emissions of three ozone-depleting hydrochlorofluorocarbons 期刊论文
Proceedings of the National Academy of Science, 2021
作者:  Martin K. Vollmer;  Jens Mühle;  Stephan Henne;  Dickon Young;  Matthew Rigby;  Blagoj Mitrevski;  Sunyoung Park;  Chris R. Lunder;  Tae Siek Rhee;  Christina M. Harth;  Matthias Hill;  Ray L. Langenfelds;  Myriam Guillevic;  Paul M. Schlauri;  Ove Hermansen;  Jgor Arduini;  Ray H. J. Wang;  Peter K. Salameh;  Michela Maione;  Paul B. Krummel;  Stefan Reimann;  Simon O’Doherty;  Peter G. Simmonds;  Paul J. Fraser;  Ronald G. Prinn;  Ray F. Weiss;  L. Paul Steele
收藏  |  浏览/下载:14/0  |  提交时间:2021/02/17
A nutrient control on marine anoxia during the end-Permian mass extinction 期刊论文
Nature, 2020
作者:  Martin Schobben;  William J. Foster;  Arve R. N. Sleveland;  Valentin Zuchuat;  Henrik H. Svensen;  Sverre Planke;  David P. G. Bond;  Fons Marcelis;  Robert J. Newton;  Paul B. Wignall;  Simon W. Poulton
收藏  |  浏览/下载:12/0  |  提交时间:2020/08/25
Vertical redistribution of moisture and aerosol in orographic mixed-phase clouds 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (13) : 7979-8001
作者:  Miltenberger, Annette K.;  Field, Paul R.;  Hill, Adrian H.;  Heymsfield, Andrew J.
收藏  |  浏览/下载:9/0  |  提交时间:2020/07/14
Constraining remote oxidation capacity with ATom observations 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (13) : 7753-7781
作者:  Travis, Katherine R.;  Heald, Colette L.;  Allen, Hannah M.;  Apel, Eric C.;  Arnold, Stephen R.;  Blake, Donald R.;  Brune, William H.;  Chen, Xin;  Commane, Roisin;  Crounse, John D.;  Daube, Bruce C.;  Diskin, Glenn S.;  Elkins, James W.;  Evans, Mathew J.;  Hall, Samuel R.;  Hintsa, Eric J.;  Hornbrook, Rebecca S.;  Kasibhatla, Prasad S.;  Kim, Michelle J.;  Luo, Gan;  McKain, Kathryn;  Millet, Dylan B.;  Moore, Fred L.;  Peischl, Jeffrey;  Ryerson, Thomas B.;  Sherwen, Tomas;  Thames, Alexander B.;  Ullmann, Kirk;  Wang, Xuan;  Wennberg, Paul O.;  Wolfe, Glenn M.;  Yu, Fangqun
收藏  |  浏览/下载:48/0  |  提交时间:2020/08/18
A remnant planetary core in the hot-Neptune desert 期刊论文
NATURE, 2020, 583 (7814) : 39-+
作者:  David J. Armstrong;  Thé;  o A. Lopez;  Vardan Adibekyan;  Richard A. Booth;  Edward M. Bryant;  Karen A. Collins;  Magali Deleuil;  Alexandre Emsenhuber;  Chelsea X. Huang;  George W. King;  Jorge Lillo-Box;  Jack J. Lissauer;  Elisabeth Matthews;  Olivier Mousis;  Louise D. Nielsen;  Hugh Osborn;  Jon Otegi;  Nuno C. Santos;  ;  rgio G. Sousa;  Keivan G. Stassun;  Dimitri Veras;  Carl Ziegler;  Jack S. Acton;  Jose M. Almenara;  David R. Anderson;  David Barrado;  Susana C. C. Barros;  Daniel Bayliss;  Claudia Belardi;  Francois Bouchy;  ;  sar Briceñ;  o;  Matteo Brogi;  David J. A. Brown;  Matthew R. Burleigh;  Sarah L. Casewell;  Alexander Chaushev;  David R. Ciardi;  Kevin I. Collins;  Knicole D. Coló;  n;  Benjamin F. Cooke;  Ian J. M. Crossfield;  Rodrigo F. Dí;  az;  Elisa Delgado Mena;  Olivier D. S. Demangeon;  Caroline Dorn;  Xavier Dumusque;  Philipp Eigmü;  ller;  Michael Fausnaugh;  Pedro Figueira;  Tianjun Gan;  Siddharth Gandhi;  Samuel Gill;  Erica J. Gonzales;  Michael R. Goad;  Maximilian N. Gü;  nther;  Ravit Helled;  Saeed Hojjatpanah;  Steve B. Howell;  James Jackman;  James S. Jenkins;  Jon M. Jenkins;  Eric L. N. Jensen;  Grant M. Kennedy;  David W. Latham;  Nicholas Law;  Monika Lendl;  Michael Lozovsky;  Andrew W. Mann;  Maximiliano Moyano;  James McCormac;  Farzana Meru;  Christoph Mordasini;  Ares Osborn;  Don Pollacco;  Didier Queloz;  Liam Raynard;  George R. Ricker;  Pamela Rowden;  Alexandre Santerne;  Joshua E. Schlieder;  Sara Seager;  Lizhou Sha;  Thiam-Guan Tan;  Rosanna H. Tilbrook;  Eric Ting;  Sté;  phane Udry;  Roland Vanderspek;  Christopher A. Watson;  Richard G. West;  Paul A. Wilson;  Joshua N. Winn;  Peter Wheatley;  Jesus Noel Villasenor;  Jose I. Vines;  Zhuchang Zhan
收藏  |  浏览/下载:17/0  |  提交时间:2020/07/06

The interiors of giant planets remain poorly understood. Even for the planets in the Solar System, difficulties in observation lead to large uncertainties in the properties of planetary cores. Exoplanets that have undergone rare evolutionary processes provide a route to understanding planetary interiors. Planets found in and near the typically barren hot-Neptune '  desert'  (1,2)(a region in mass-radius space that contains few planets) have proved to be particularly valuable in this regard. These planets include HD149026b(3), which is thought to have an unusually massive core, and recent discoveries such as LTT9779b(4)and NGTS-4b(5), on which photoevaporation has removed a substantial part of their outer atmospheres. Here we report observations of the planet TOI-849b, which has a radius smaller than Neptune'  s but an anomalously large mass of39.1-2.6+2.7Earth masses and a density of5.2-0.8+0.7grams per cubic centimetre, similar to Earth'  s. Interior-structure models suggest that any gaseous envelope of pure hydrogen and helium consists of no more than3.9-0.9+0.8 per cent of the total planetary mass. The planet could have been a gas giant before undergoing extreme mass loss via thermal self-disruption or giant planet collisions, or it could have avoided substantial gas accretion, perhaps through gap opening or late formation(6). Although photoevaporation rates cannot account for the mass loss required to reduce a Jupiter-like gas giant, they can remove a small (a few Earth masses) hydrogen and helium envelope on timescales of several billion years, implying that any remaining atmosphere on TOI-849b is likely to be enriched by water or other volatiles from the planetary interior. We conclude that TOI-849b is the remnant core of a giant planet.


Observations of TOI-849b reveal a radius smaller than Neptune'  s but a large mass of about 40 Earth masses, indicating that the planet is the remnant core of a gas giant.


  
Missing OH reactivity in the global marine boundary layer 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (6) : 4013-4029
作者:  Thames, Alexander B.;  Brune, William H.;  Miller, David O.;  Allen, Hannah M.;  Apel, Eric C.;  Blake, Donald R.;  Bui, T. Paul;  Commane, Roisin;  Crounse, John D.;  Daube, Bruce C.;  Diskin, Glenn S.;  DiGangi, Joshua P.;  Elkins, JamesW.;  Hall, Samuel R.;  Hanisco, Thomas F.;  Hannun, Reem A.;  Hintsa, Eric;  Hornbrook, Rebecca S.;  Kim, Michelle J.;  McKain, Kathryn;  Moore, Fred L.;  Nicely, Julie M.;  Peischl, Jeffrey;  Ryerson, Thomas B.;  St Clair, Jason M.;  Sweeney, Colm;  Teng, Alex;  Thompson, Chelsea R.;  Ullmann, Kirk;  Wennberg, Paul O.;  Wolfe, Glenn M.
收藏  |  浏览/下载:14/0  |  提交时间:2020/07/02
Pharmacologic fibroblast reprogramming into photoreceptors restores vision 期刊论文
NATURE, 2020, 581 (7806) : 83-+
作者:  Jiang, Mingkai;  Medlyn, Belinda E.;  Drake, John E.;  Duursma, Remko A.;  Anderson, Ian C.;  Barton, Craig V. M.;  Boer, Matthias M.;  Carrillo, Yolima;  Castaneda-Gomez, Laura;  Collins, Luke;  Crous, Kristine Y.;  De Kauwe, Martin G.;  dos Santos, Bruna M.;  Emmerson, Kathryn M.;  Facey, Sarah L.;  Gherlenda, Andrew N.;  Gimeno, Teresa E.;  Hasegawa, Shun;  Johnson, Scott N.;  Kannaste, Astrid;  Macdonald, Catriona A.;  Mahmud, Kashif;  Moore, Ben D.;  Nazaries, Loic;  Neilson, Elizabeth H. J.;  Nielsen, Uffe N.;  Niinemets, Ulo;  Noh, Nam Jin;  Ochoa-Hueso, Raul;  Pathare, Varsha S.;  Pendall, Elise;  Pihlblad, Johanna;  Pineiro, Juan;  Powell, Jeff R.;  Power, Sally A.;  Reich, Peter B.;  Renchon, Alexandre A.;  Riegler, Markus;  Rinnan, Riikka;  Rymer, Paul D.;  Salomon, Roberto L.;  Singh, Brajesh K.;  Smith, Benjamin;  Tjoelker, Mark G.;  Walker, Jennifer K. M.;  Wujeska-Klause, Agnieszka;  Yang, Jinyan;  Zaehle, Soenke;  Ellsworth, David S.
收藏  |  浏览/下载:45/0  |  提交时间:2020/07/03

Photoreceptor loss is the final common endpoint in most retinopathies that lead to irreversible blindness, and there are no effective treatments to restore vision(1,2). Chemical reprogramming of fibroblasts offers an opportunity to reverse vision loss  however, the generation of sensory neuronal subtypes such as photoreceptors remains a challenge. Here we report that the administration of a set of five small molecules can chemically induce the transformation of fibroblasts into rod photoreceptor-like cells. The transplantation of these chemically induced photoreceptor-like cells (CiPCs) into the subretinal space of rod degeneration mice (homozygous for rd1, also known as Pde6b) leads to partial restoration of the pupil reflex and visual function. We show that mitonuclear communication is a key determining factor for the reprogramming of fibroblasts into CiPCs. Specifically, treatment with these five compounds leads to the translocation of AXIN2 to the mitochondria, which results in the production of reactive oxygen species, the activation of NF-kappa B and the upregulation of Ascl1. We anticipate that CiPCs could have therapeutic potential for restoring vision.


A set of five small molecules can induce the transformation of fibroblasts into rod photoreceptor-like cells, which can partially restore pupil reflex and visual function when transplanted into a rod degeneration mouse model.


  
Comprehensive isoprene and terpene gas-phase chemistry improves simulated surface ozone in the southeastern US 期刊论文
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (6) : 3739-3776
作者:  Schwantes, Rebecca H.;  Emmons, Louisa K.;  Orlando, John J.;  Barth, Mary C.;  Tyndall, Geoffrey S.;  Hall, Samuel R.;  Ullmann, Kirk;  St Clair, Jason M.;  Blake, Donald R.;  Wisthaler, Armin;  Bui, Thao Paul V.
收藏  |  浏览/下载:16/0  |  提交时间:2020/07/02