Results 81 to 90 of about 186,527 (312)

Advantages and disadvantages of substitution of helium as carrier gas in gas chromatography by hydrogen. Part II. - Retention time and selectivity.

Kvasný průmysl, 2013
Gas chromatography often uses helium, hydrogen, and nitrogen as carrier gases. The most common carrier gas is helium since it provides good separations, is inert, and is safe to use.
Tomáš HORÁK, Jiří ČULÍK, Karel ŠTĚRBA, Jana OLŠOVSKÁ   +3 more
doaj   +1 more source

A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments

Advanced Materials, EarlyView.
The synthesis of a novel nanoporous graphene (NPG) is reported with biphenylene segments via thermal fusion of 12‐armchair porous graphene nanoribbons grown on gold surfaces. Characterization using STM, AFM, and DFT reveals low‐defect semiconducting behaviour and tunable band gaps.
Paula Angulo‐Portugal, Martin Irizar, Longfeng Huang, Mamun Sarker, Mustafa A. Ashoush, Zakaria M. Abd El‐Fattah, Johannes Barth, Frederik Schiller, Afaf El‐Sayed, Fei Gao, Dimas G. de Oteyza, Alexander Sinitskii, Aran Garcia‐Lekue, Martina Corso, Ignacio Piquero‐Zulaica   +14 more
wiley   +1 more source

Minimization of error in an integral pressure transducer with a separating membrane

Технологія та конструювання в електронній апаратурі, 2006
The design of an integral pressure transducer (IPT) with a separating membrane (SM) for measuring pressure in aggressive liquids and liquids with solid inclusions has been investigated.
G. G. Babichev, E. A. Zinchenko, S. I. Kozlovsky, V. V. Nedostup, V. A. Romanov, N. N. Sharan   +5 more
doaj  

Emergent Spin Supersolids in Frustrated Quantum Materials

Advanced Materials, EarlyView.
This review highlights developments in the study of spin super‐solids in frustrated quantum materials. Advanced experimental characterizations and computational studies enable a comprehensive understanding of the driving mechanisms of spin super‐solidity in various layered transition‐metal compounds, bridging materials, experiments, and theory aspects.
Yixuan Huang, Seiji Yunoki, Sadamichi Maekawa   +2 more
wiley   +1 more source

Differential cross sections for electron impact excitation of then= 2 states of helium at intermediate energies (80, 100 and 120 eV) measured across the complete angular scattering range (0–180°) [PDF]

, 2011
Differential cross sections (DCS) for inelastic electron scattering to the n = 2 states in helium have been measured at incident energies of 80, 100 and 120 eV.
Read, F., O Zatsarinny, F H Read, King, G C, Ward, R., Bartschat, K., N Bowring, Zatsarinny, O, Bartschat, K, D Cubric, K Bartschat, Read, F H, G C King, D V Fursa, Bray, I, Cubric, D, Bowring, N., King, G., I Bray, Ward, Rupert, R Ward, Bowring, N, Cubric, D., Zatsarinny, O., Fursa, D V, Bray, Igor, Ward, R, Fursa, Dmitry   +27 more
core   +1 more source

Advances in Magnesium‐Based Thermoelectrics: A Critical Review

Advanced Materials, EarlyView.
Magnesium‐based thermoelectric materials have emerged as promising candidates for low‐to‐mid‐temperature energy conversion due to their abundance, low cost, and competitive performance. This review summarizes recent advances in Mg3X2, MgAgSb, and Mg2X systems, covering transport mechanisms, fabrication strategies, stability challenges, and device ...
Li‐Min Zhang, Li Zhang, Nan‐Hai Li, Yan‐Ling Yang, Xiao‐Lei Shi, Zhi‐Gang Chen   +5 more
wiley   +1 more source

Deuterium retention in tungsten under the combined influence of displacement damage and helium

Nuclear Fusion
Accurate predictions of hydrogen isotope/tritium inventory in tungsten (W), used as a plasma-facing material in fusion reactors, can reduce the uncertainty associated with the self-sustaining fuel cycle.
Ting Wang, Xiu-Li Zhu, Mengchong Ren, Yue Yuan, Wangguo Guo, Shiwei Wang, Long Cheng, Di Hu, Yuhao Li, Guang-Hong Lu   +9 more
doaj   +1 more source

High Center‐of‐Mass, Multi‐Legged Soft Robots Powered by Geometrically Encoded Liquid Crystal Elastomer Arc Appendages

Advanced Materials, EarlyView.
Inspired by the octopus and the golden wheel spider, soft robots with liquid crystal elastomer arc fibers as appendages are fabricated to transcend surface constraints through an elevated center of mass and minimal contact footprints. By leveraging curvature‐encoded deformation‐recovery cycles, these robots exhibit contractile, torsional, and flexural ...
Jong Bin Kim, Antonio Proctor Martinez, Yaoye Hong, Ziyun Zhang, Kun‐Yu Wang, Shu Yang   +5 more
wiley   +1 more source

A Survey of Interlayer Interaction Models for Graphene and Other 2D Materials

Advanced Materials Interfaces, EarlyView.
Van der Waals interactions arising from electronic polarization at atomically close interfaces generate corrugated interlayer energy landscapes that govern normal and tangential tractions. This review presents an overview of quantum, atomistic, analytical, and continuum modeling approaches, highlighting their roles across length scales in capturing ...
Gourav Yadav, Shakti S. Gupta, Roger A. Sauer   +2 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