Results 81 to 90 of about 559,916 (326)

The characteristics and helium generation potential of helium source rocks in the northern Ordos Basin, China

Frontiers in Earth Science
The origin of helium is predominantly governed by helium source rocks, which encompass a spectrum of lithologies, including metamorphic rocks within the basin’s basement, and mudstones, coal, and other rocks in the overlying sedimentary formations.
Zhengang Ding, Zhengang Ding, Chenglin Liu, Chenglin Liu, Jianfa Chen, Jianfa Chen, Haidong Wang, Haidong Wang, Muhammad Aslam Khan, Muhammad Aslam Khan, Anqi Tian, Anqi Tian   +11 more
doaj   +1 more source

Helium Nova on a Very Massive White Dwarf -- A Light Curve Model of V445 Puppis (2000) Revised

, 2008
V445 Pup (2000) is a unique object identified as a helium nova. Color indexes during the outburst are consistent with those of free-free emission. We present a free-free emission dominated light curve model of V445 Pup on the basis of the optically thick
Hideyuki Saio, Izumi Hachisu, Kamath U. S., Kolotilov E. A., Mariko Kato, McGowan K. E., Paczynski B., Saio H., Seiichiro Kiyota, Shenavrin V. I.   +9 more
core   +1 more source

Silver Ion‐Mediated [hk1]‐Oriented Sb2Se3 Crystal Growth for Efficient Photoelectrochemical Hydrogen Evolution

Advanced Functional Materials, EarlyView.
Ag+‐mediated hydrothermal crystal engineering promotes preferential [hk1]‐oriented growth of Sb2Se3 via an ultrathin MoOx interlayer, improving crystallinity and suppressing non‐radiative recombination. The optimized Ag+ treatment photocathode delivers 24.7 mA cm−2 at 0 VRHE and improved stability, revealing an ion‐modulated route to high‐performance ...
Ziying Zhang, Zhenbin Wang, Mirjana Dimitrievska, Miloš Baljozović, Yongping Gan, Pardis Adams, Sanghyun Bae, Thomas Moehl, Wenzhe Niu, Xiang jiu Guan, S. David Tilley   +10 more
wiley   +1 more source

Mechanisms underlying differential helium enrichment in shale gas of varying structural styles in the southeastern Sichuan Basin

Meitian dizhi yu kantan
ObjectiveShale gas reservoirs hold considerable helium reserves despite relatively low helium abundance, establishing them as a critical replacement for helium production growth.
Zhiyuan XIN, Jianfa CHEN, Jie WANG, Yong MA   +3 more
doaj   +1 more source

Method and apparatus for generating coherent radiation in the ultra-violet region and above by use of distributed feedback [PDF]

, 1976
Helium in the superfluid state emits copious amounts of radiation in the ultraviolet region when excited by an electron stream. Conventional laser action using mirrors is impossible in superfluid helium because there are no mirrors that will reflect VUV ...
Saffren, M. M.
core   +1 more source

Upcycling of Disposable Face Masks into Water‐Resistant and Flame Retardant Foams

Advanced Functional Materials, EarlyView.
Disposable mask waste is upcycled into lightweight polypropylene‐based foams with tunable porosity and composite architectures reinforced by ear‐loop fibers. The sustainable solvent‐based process enables upcycling rates of 91% and solvent recovery of >90%.
Jingjing Pan, Erlantz Lizundia, Hao Jia, Lennart Bergström   +3 more
wiley   +1 more source

Outcomes of heliox use in children with respiratory compromise: A 10‐year single institution experience

Laryngoscope Investigative Otolaryngology
Objective Heliox, a mixture of helium and oxygen, has been shown to improve laminar airflow and decrease airway resistance in children. This study aims to describe the outcomes of heliox use in children with respiratory compromise and to identify ...
Ashley Young, Eli Stein, Matthew Rowland, Taher Valika, Saied Ghadersohi, Inbal Hazkani   +5 more
doaj   +1 more source

Helium enrichment theory and exploration ideas for helium-rich gas reservoirs

Petroleum Exploration and Development
Using gas and rock samples from major petroliferous basins in the world, the helium content, composition, isotopic compositions and the U and Th contents in rocks are analyzed to clarify the helium enrichment mechanism and distribution pattern and the ...
Shengfei QIN, Lirong Dou, Gang TAO, Jiyuan LI, Wen QI, Xiaobin LI, Bincheng GUO, Zizhuo ZHAO, Jiamei WANG   +8 more
doaj   +1 more source

Localized helium excitations in 4He_N-benzene clusters

, 2003
We compute ground and excited state properties of small helium clusters 4He_N containing a single benzene impurity molecule. Ground-state structures and energies are obtained for N=1,2,3,14 from importance-sampled, rigid-body diffusion Monte Carlo (DMC).
A. Bach, A. Heidenreich, A. Lindinger, A. Mushinski, A. Sarsa, A. Viel, B. E. Clements, B. E. Clements, D. Blume, D. S. Greywall, E. Cheng, F. Dalfovo, F. Stienkemeier, G. A. Csáthy, G. Zimmerli, H. J. Lauter, J. E. Gubernatis, J. Nyéki, J. P. Toennies, K. Birgitta Whaley, K. S. Liu, L. Reatto, M. A. McMahon, M. Bretz, M. E. Pierce, M. Hartmann, M. Hartmann, M. Hartmann, M. Hartmann, M. Jarrell, M. V. Patel, M. V. R. Krishna, M. Wagner, P. Hobza, P. J. Shirron, P. W. Adams, Patrick Huang, R. A. Aziz, R. K. Bryan, R. N. Barnett, S. A. Chin, S. A. Chin, S. Grebenev, S. Leutwyler, S. M. Anderson, S. M. Beck, S. Vitiello, U. Even, U. Even, W. L. McMillan, Y. Kwon   +50 more
core   +1 more source

Multivalent Protein Nanorings for Broad and Potent SARS‐CoV‐2 Neutralization

Advanced Healthcare Materials, EarlyView.
A protein‐only, modular multivalent nanoscaffold displaying 20 anchor points, decorated with two different binders (10 of each), targeting the SARS‐CoV‐2 receptor‐binding domain is presented. The construct self‐assembles into stable, biocompatible, homogeneous nanoparticles, exhibit synergistic binding with fM IC50 values. It also detects spike at 9 ng 
Molood Behbahanipour, Carla Goldin, Cecilia Arahi Prato, Ana Luz Paletta, Oriol Bárcenas, Susanna Navarro, Jordi Pujols, Daniel H. Murgida, María Virginia Tribulatti, Sebastián Esperante, Damian Alvarez‐Paggi, Salvador Ventura   +11 more
wiley   +1 more source