- Crystal structures of (Mg1-x,Fe-x)SiO3 postperovskite at high pressures
[作者:Yamanaka, T; Hirose, K; Mao, WL; Meng, Y; Ganesh, P; Shulenburger, L; Shen, GY; Hemley, RJ,期刊:Proceedings of the National Academy of Sciences of the United States of America, 页码:1035-1040 , 文章类型: Article,,卷期:2012年109-4]
- X-ray diffraction experiments on postperovskite (ppv) with compositions (Mg0.9Fe0.1)SiO3 and (Mg0.6Fe0.4)SiO3 at Earth core-mantle boundary pressures reveal different crystal structures. The former adopts the CaIrO3-type...
- Structure of ice crystallized from supercooled water
[作者:Malkin, TL; Murray, BJ; Brukhno, AV; Anwar, J; Salzmann, CG,期刊:Proceedings of the National Academy of Sciences of the United States of America, 页码:1041-1045 , 文章类型: Article,,卷期:2012年109-4]
- The freezing of water to ice is fundamentally important to fields as diverse as cloud formation to cryopreservation. At ambient conditions, ice is considered to exist in two crystalline forms: stable hexagonal ice and me...
- Paleoenvironmental history of the West Baray, Angkor (Cambodia)
[作者:Day, MB; Hodell, DA; Brenner, M; Chapman, HJ; Curtis, JH; Kenney, WF; Kolata, AL; Peterson, LC,期刊:Proceedings of the National Academy of Sciences of the United States of America, 页码:1046-1051 , 文章类型: Article,,卷期:2012年109-4]
- Angkor (Cambodia) was the seat of the Khmer Empire from the 9th to 15th century AD. The site is noted for its monumental architecture and complex hydro-engineering systems, comprised of canals, moats, embankments, and la...
- The c-MYC oncoprotein, the NAMPT enzyme, the SIRT1-inhibitor DBC1, and the SIRT1 deacetylase form a positive feedback loop
[作者:Menssen, A; Hydbring, P; Kapelle, K; Vervoorts, J; Diebold, J; Luscher, B; Larsson, LG; Hermeking, H,期刊:Proceedings of the National Academy of Sciences of the United States of America, 页码:E187-E196 , 文章类型: Article,,卷期:2012年109-4]
- Silent information regulator 1 (SIRT1) represents an NAD(+)-dependent deacetylase that inhibits proapoptotic factors including p53. Here we determined whether SIRT1 is downstream of the prototypic c-MYC oncogene, which i...
- Quasi-liquid layers on ice crystal surfaces are made up of two different phases
[作者:Sazaki, G; Zepeda, S; Nakatsubo, S; Yokomine, M; Furukawa, Y,期刊:Proceedings of the National Academy of Sciences of the United States of America, 页码:1052-1055 , 文章类型: Article,,卷期:2012年109-4]
- Ice plays crucially important roles in various phenomena because of its abundance on Earth. However, revealing the dynamic behavior of quasi-liquid layers (QLLs), which governs the surface properties of ice crystals at t...
- Interpolity exchange of basalt tools facilitated via elite control in Hawaiian archaic states
[作者:Kirch, PV; Mills, PR; Lundblad, SP; Sinton, J; Kahn, JG,期刊:Proceedings of the National Academy of Sciences of the United States of America, 页码:1056-1061 , 文章类型: Article,,卷期:2012年109-4]
- Ethnohistoric accounts of late precontact Hawaiian archaic states emphasize the independence of chiefly controlled territories (ahupua'a) based on an agricultural, staple economy. However, elite control of unevenly distr...
- Structuring economic incentives to reduce emissions from deforestation within Indonesia
[作者:Busch, J; Lubowski, RN; Godoy, F; Steininger, M; Yusuf, AA; Austin, K; Hewson, J; Juhn, D; Farid, M; Boltz, F,期刊:Proceedings of the National Academy of Sciences of the United States of America, 页码:1062-1067 , 文章类型: Article,,卷期:2012年109-4]
- We estimate and map the impacts that alternative national and subnational economic incentive structures for reducing emissions from deforestation (REDD+) in Indonesia would have had on greenhouse gas emissions and nation...
- Enhancing humoral responses to a malaria antigen with nanoparticle vaccines that expand T-fh cells and promote germinal center induction
[作者:Moon, JJ; Suh, H; Li, AV; Ockenhouse, CF; Yadava, A; Irvine, DJ,期刊:Proceedings of the National Academy of Sciences of the United States of America, 页码:1080-1085 , 文章类型: Article,,卷期:2012年109-4]
- For subunit vaccines, adjuvants play a key role in shaping immunological memory. Nanoparticle (NP) delivery systems for antigens and/or molecular danger signals are promising adjuvants capable of promoting both cellular ...
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