中文版 | English

在结果中检索

GSTDTAP

浏览/检索结果: 共22条，第1-10条 帮助

限定条件                        
已选(0)清除 条数/页：   排序方式：
Superconductivity found in meteorites 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (14) : 7645-7649
作者:  Wampler, James;  Thiemens, Mark;  Cheng, Shaobo;  Zhu, Yimei;  Schuller, Ivan K.
收藏  |  浏览/下载：5/0  |  提交时间：2020/05/13
superconductivity  meteorites  extraterrestrial  
Antagonistic cooperativity between crystal growth modifiers 期刊论文
NATURE, 2020, 577 (7791) : 497-+
作者:  Ma, Wenchuan;  Lutsko, James F.;  Rimer, Jeffrey D.;  Vekilov, Peter G.
收藏  |  浏览/下载：9/0  |  提交时间：2020/07/03

Inhibitor pairs that suppress the crystallization of haematin, which is a part of malaria parasites'  physiology, show unexpected antagonism due to attenuation of step pinning by kink blockers.


Ubiquitous processes in nature and the industry exploit crystallization from multicomponent environments(1-5)  however, laboratory efforts have focused on the crystallization of pure solutes(6,7) and the effects of single growth modifiers(8,9). Here we examine the molecular mechanisms employed by pairs of inhibitors in blocking the crystallization of haematin, which is a model organic compound with relevance to the physiology of malaria parasites(10,11). We use a combination of scanning probe microscopy and molecular modelling to demonstrate that inhibitor pairs, whose constituents adopt distinct mechanisms of haematin growth inhibition, kink blocking and step pinning(12,13), exhibit both synergistic and antagonistic cooperativity depending on the inhibitor combination and applied concentrations. Synergism between two crystal growth modifiers is expected, but the antagonistic cooperativity of haematin inhibitors is not reflected in current crystal growth models. We demonstrate that kink blockers reduce the line tension of step edges, which facilitates both the nucleation of crystal layers and step propagation through the gates created by step pinners. The molecular viewpoint on cooperativity between crystallization modifiers provides guidance on the pairing of modifiers in the synthesis of crystalline materials. The proposed mechanisms indicate strategies to understand and control crystallization in both natural and engineered systems, which occurs in complex multicomponent media(1-3,8,9). In a broader context, our results highlight the complexity of crystal-modifier interactions mediated by the structure and dynamics of the crystal interface.


  
Chemotaxis as a navigation strategy to boost range expansion 期刊论文
Nature, 2019, 575
作者:  Jonas Cremer;  Tomoya Honda;  Ying Tang;  Jerome Wong-Ng;  Massimo Vergassola;  Terence Hwa
收藏  |  浏览/下载：6/0  |  提交时间：2019/11/27
A unified model of ripples and dunes in water and planetary environments 期刊论文
NATURE GEOSCIENCE, 2019, 12 (5) : 345-+
作者:  Vinent, Orencio Duran;  Andreotti, Bruno;  Claudin, Philippe;  Winter, Christian
收藏  |  浏览/下载：6/0  |  提交时间：2019/11/26
A deep groundwater origin for recurring slope lineae on Mars 期刊论文
NATURE GEOSCIENCE, 2019, 12 (4) : 235-+
作者:  Abotalib, Abotalib Z.;  Heggy, Essam
收藏  |  浏览/下载：0/0  |  提交时间：2019/11/26
Linking a mutation to survival in wild mice 期刊论文
SCIENCE, 2019, 363 (6426) : 499-+
作者:  Barrett, Rowan D. H.;  Laurent, Stefan;  Mallarino, Ricardo;  Pfeifer, Susanne P.;  Xu, Charles C. Y.;  Foll, Matthieu;  Wakamatsu, Kazumasa;  Duke-Cohan, Jonathan S.;  Jensen, Jeffrey D.;  Hoekstra, Hopi E.
收藏  |  浏览/下载：11/0  |  提交时间：2019/11/27
Photoelectric conversion on Earth's surface via widespread Fe- and Mn-mineral coatings 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (20) : 9741-9746
作者:  Lu, Anhuai;  Li, Yan;  Ding, Hongrui;  Xu, Xiaoming;  Li, Yanzhang;  Ren, Guiping;  Liang, Jing;  Liu, Yuwei;  Hong, Hao;  Chen, Ning;  Chu, Shengqi;  Liu, Feifei;  Wang, Haoran;  Ding, Cong;  Wang, Changqiu;  Lai, Yong;  Liu, Juan;  Dick, Jeffrey;  Liu, Kaihui;  Hochella, Michael F., Jr.
收藏  |  浏览/下载：14/0  |  提交时间：2019/11/27
phototrophic  mineral coatings  birnessite  solar energy  redox (bio)geochemistry  
Residential green space in childhood is associated with lower risk of psychiatric disorders from adolescence into adulthood 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (11) : 5188-5193
作者:  Engemann, Kristine;  Pedersen, Carsten Bocker;  Arge, Lars;  Tsirogiannis, Constantinos;  Mortensen, Preben Bo;  Svenning, Jens-Christian
收藏  |  浏览/下载：9/0  |  提交时间：2019/11/27
geographic information systems  mental health  psychological ecosystem services  remote sensing  urban planning  
Quantifying the sensing power of vehicle fleets 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (26) : 12752-12757
作者:  O&;  39;Keeffe, Kevin P.
收藏  |  浏览/下载：2/0  |  提交时间：2019/11/27
mobile sensing  urban monitoring  urban sustainability  city science  
Intramolecular isotopic evidence for bacterial oxidation of propane in subsurface natural gas reservoirs 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 116 (14) : 6653-6658
作者:  Gilbert, Alexis;  Lollar, Barbara Sherwood;  Musat, Florin;  Giunta, Thomas;  Chen, Songcan;  Kajimoto, Yuki;  Yamada, Keita;  Boreham, Christopher J.;  Yoshida, Naohiro;  Ueno, Yuichiro
收藏  |  浏览/下载：8/0  |  提交时间：2019/11/27
intramolecular isotope  biodegradation  hydrocarbons  propane