Results 41 to 50 of about 3,313,131 (376)
Helium additions to MIG shielding gas - an economic option? [PDF]
, 2011 An investigation has been carried out to establish the technical and economic benefits of adding two levels of helium to a normal shielding gas. Technically no adverse issues were established using the two levels of helium, and the most significant ...
Galloway, Alexander +2 more
core
Advanced Functional Materials, EarlyView.Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr +7 more
wiley +1 more source
Defect Analysis of the β– to γ–Ga2O3 Phase Transition
Advanced Functional Materials, EarlyView.The role of defects at all the relevant stages of the β$\beta$‐ to γ$\gamma$‐Ga2O3 polymorph transition is investigated using a multi method approach. The positron annihilation spectroscopy based results show that the defect density decreases after the transition, and that changes in defect configuration within the γ phase occur with increasing ...
Umutcan Bektas +9 more
wiley +1 more source
Meitian dizhi yu kantanObjectiveShale gas reservoirs hold considerable helium reserves despite relatively low helium abundance, establishing them as a critical replacement for helium production growth.
Zhiyuan XIN +3 more
doaj +1 more source
An evaluation of weld metal nitrogen retention and properties in 316NL austenitic stainless steel [PDF]
, 2011 A series of tests were conducted using varying levels of nitrogen and helium in a conventional argon shielding gas when welding 316LN austenitic stainless steel. The outcome was that a 15 per cent nitrogen addition to the argon shielding gas had the most
Baker, Thomas +2 more
core +1 more source
TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan), 1972 In the United States of America the natural gas which contains about 0.4% up helium content is used as main material for producing the helium gas. The equipment recently developed in France separates and rectifies 0.05% of helium gas to produce high purity of helium gas.
openaire +2 more sources
Modulating Electrochemical CO2 Reduction Pathways via Interfacial Electric Field
Advanced Functional Materials, EarlyView.Engineering interfacial electric fields in Cu/ITO electrodes enables precise control of CO2 reduction pathways. Charge transfer from Cu to ITO generates positively charged Cu species that steer selectivity from ethylene toward methane. This work demonstrates how interfacial electric‐field modulation can direct reaction intermediates and transform ...
Mahdi Salehi +7 more
wiley +1 more source
Shiyou shiyan dizhiA certain amount of helium is found in the natural gas of both the Dongsheng and Daniudi gas fields in the Hangjinqi area of the Ordos Basin. However, the average helium content in the Daniudi Gas Field is only about one-fourth of that in the Dongsheng ...
Jie WANG +7 more
doaj +1 more source
Properties of Dense Fluid Hydrogen and Helium in Giant Gas Planets
, 2006 Equilibrium properties of hydrogen-helium mixtures under thermodynamic conditions found in the interior of giant gas planets are studied by means of density functional theory molecular dynamics simulations.
Burrows +14 more
core +2 more sources
Delayed annihilation of antiprotons in helium gas [PDF]
Physical Review A, 1994 The delayed annihilation of antiprotons, which was recently discovered in liquid $^{4}\mathrm{He}$ at KEK, has been studied at CERN in gas-phase $^{4}\mathrm{He}$ and $^{3}\mathrm{He}$. The annihilation time spectra in gaseous $^{4}\mathrm{He}$ at various pressures were found to be similar to that for liquid $^{4}\mathrm{He}$.
, Nakamura +11 more
openaire +2 more sources