Results 11 to 20 of about 6,019,713 (343)

Ambient pressure X-ray absorption spectroscopy at ME2-BL02B of SSRF and its application in catalysis

open access: yesHe jishu, 2021
BackgroundThe traditional soft X-ray absorption spectroscopy (XAS) method can only work under ultra-high vacuum conditions and cannot be used to detect changes in the electronic structure of samples under real conditions.
WANG Wei   +5 more
doaj   +1 more source

Ambient-pressure hydrogenation of CO2 into long-chain olefins

open access: yesNature Communications, 2022
The conversion of CO2 by renewable power-generated hydrogen is a promising approach to a sustainable production of long-chain olefins (C4+=) which are currently produced from petroleum resources.
Zhongling Li   +10 more
semanticscholar   +1 more source

The influence of pressure compensation in the middle ear on the detection of distortion product otoacoustic emissions [PDF]

open access: yesSpecijalna Edukacija i Rehabilitacija, 2016
The aim of this study was to assess the effects of pressure compensation in the middle ear on the size of the response of distortion product otoacoustic emissions (DPOAEs) at frequencies from 1 to 6 kHz.
Karić Aleksandar   +4 more
doaj   +1 more source

Microembolic Signals Under Increased Ambient Pressure [PDF]

open access: yesStroke, 1998
To the Editor: We read with interest the article by Kaps et al1 concerning the nature of Doppler-detected microembolic signals (MES) in the cerebral arteries of patients with an artificial prosthetic heart valve. Their oxygen experiment provides strong evidence for the conclusion that these MES are gas bubbles.
H, Bot   +4 more
openaire   +2 more sources

Construction of Hexagonal Prism-like Defective BiOCL Hierarchitecture for Photocatalytic Degradation of Tetracycline Hydrochloride

open access: yesNanomaterials, 2022
Oxygen vacancy manipulation and hierarchical morphology construction in oxygen-containing semiconductors have been demonstrated to be effective strategies for developing high efficiency photocatalysts.
Lijun Hu   +5 more
doaj   +1 more source

Quantitative investigation of gas flow, powder-gas interaction, and powder behavior under different ambient pressure levels in laser powder bed fusion

open access: yesInternational journal of machine tools & manufacture, 2021
The powder motion in laser powder bed fusion (LPBF) processes causes defect and variability issues in the built products. It has been reported that the ambient pressure has a significant influence on the powder motion, but the physical effects of the ...
Xuxiao Li   +3 more
semanticscholar   +1 more source

HIPPIE: a new platform for ambient-pressure X-ray photoelectron spectroscopy at the MAX IV Laboratory

open access: yesJournal of Synchrotron Radiation, 2021
The setup and specifications of the new soft X-ray beamline HIPPIE, dedicated to ambient-pressure X-ray photoelectron spectroscopy at the MAX IV Laboratory, are summarized.
Suyun Zhu   +23 more
semanticscholar   +1 more source

Ambient - Pressure Silica Aerogel Films [PDF]

open access: yesMRS Proceedings, 1994
AbstractVery highly porous (aerogel) silica films with refractive index in the range 1.006-1.05 (equivalent porosity 98.5-88%) were prepared by an ambient-pressure process1,2. It was shown earlier using in situ ellipsometric imaging1 that the high porosity of these films was mainly attributable to the dilation or “springback” of the film during the ...
Sai S. Prakash   +3 more
openaire   +1 more source

Numerical research of biodiesel spray coupled cavitation by different environmental simulations under high injection pressure

open access: yesEnergy Science & Engineering, 2023
The effects of injection pressure and ambient pressure on biodiesel spray characteristics were studied by coupling the in‐nozzle flow, and a constant‐volume combustion bomb experimental platform was built to verify the accuracy of the coupled numerical ...
Zhijiang Ni   +4 more
doaj   +1 more source

Investigation on efficiency improvement of a Kalina cycle by sliding condensation pressure method [PDF]

open access: yes, 2017
Conventional Kalina cycle-based geothermal power plants are designed with a fixed working point determined by the local maximum ambient temperature during the year.
Wang, Enhua, Yu, Zhibin, Zhang, Fujun
core   +1 more source

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