Results 91 to 100 of about 292,669 (354)

Low-Cost Real-Time Gas Monitoring Using a Laser Plasma Induced by a Third Harmonic Q-Switched Nd-YAG Laser [PDF]

open access: yesITB Journal of Engineering Science, 2005
A gas plasma induced by a third harmonic Nd-YAG laser with relatively low pulsed energy (about 10 mJ) has favorable characteristics for gas analysis due to its low background characteristics, nevertheless a high power fundamental Nd-YAG laser (100-200 mJ)
Syahrun Nur Abdulmadjid   +5 more
doaj  

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

open access: yesKvasný 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   +3 more
doaj   +1 more source

Bifunctional WO3 Photoelectrodes Decorated by Inkjet Printing for Solar Supercapacitors

open access: yesAdvanced Sustainable Systems, EarlyView.
WO3 bifunctional photoelectrodes, produced by screen printing and then superficially decorated by inkjet printing, are successfully applied to prepare solar supercapacitors. Under illumination, the areal capacitance is enhanced thanks to the positive contribution of the photogenerated charges and the higher exposed area; its value becomes even more ...
Nicola Sangiorgi   +5 more
wiley   +1 more source

Advantages and Disadvantages of Substitution of Helium as Carrier Gas in Gas Chromatography by Hydrogen. Part I. - Technical and Safety Aspects.

open access: yesKvasný průmysl, 2013
Gas chromatography plays a significant role in the determination of flavors, which is important not only for monitoring the quality of final product but also when testing new technological procedures. Correct setting of all conditions having an influence
Tomáš HORÁK   +3 more
doaj   +1 more source

Disintegration of the KITENIN/ErbB4 Functional Complex by the Flavonoid Hispidulin Suppresses Colorectal Cancer Progression

open access: yesAdvanced Therapeutics, EarlyView.
Hispidulin disrupts the KITENIN/ErbB4 oncogenic complex and inhibits KITENIN‐mediated AP‐1 activity, cell invasion, and aerobic glycolysis. It also suppresses the production of cancer‐associated metabolites and downregulates transcriptional regulators downstream of the KITENIN complex.
Mücahit Varlı   +7 more
wiley   +1 more source

Cold Plasma Generates a Localized Inflammatory Response and Promotes Muscle Repair

open access: yesAdvanced Therapeutics, EarlyView.
The immediate tissue response to plasma is a pro‐inflammatory response which is characterized by collagen clumping, innate immune cell infiltration, enhanced metabolic processes, and decreased apoptosis. The long‐term tissue response (4‐ and 14‐days) to plasma treatment is characterized by a decreased inflammatory response, decreased adipogenesis, and ...
Carly J. Smith   +9 more
wiley   +1 more source

Feasibility of high-helium natural gas exploration in the Presinian strata, Sichuan Basin

open access: yesNatural Gas Industry B, 2015
Helium in China highly depends on import at present, so the most practical way to change the situation is searching for medium-to-large natural gas fields with high helium content.
Jian Zhang   +6 more
doaj   +1 more source

Shock-induced mixing of a light-gas cylinder [PDF]

open access: yes, 1992
Experiments have been carried out to quantify the mixing induced by the interaction of a weak shock wave with a cylindrical volume of a gas (helium) that is lighter than its surroundings (air). In these experiments a round laminar jet was used to produce
Jacobs, J. W.
core   +1 more source

GEM Operation in Negative Ion Drift Gas Mixtures

open access: yes, 2003
The first operation of GEM gas gain elements in negative ion gas mixtures is reported. Gains up to several thousand were obtained from single-stage GEMs in carbon disulfide vapor at low pressure, and in mixtures of carbon disulfide with Argon and Helium,
A Schreiner   +15 more
core   +1 more source

Non-sticking of helium buffer gas to hydrocarbons

open access: yesPhysical Review A, 2015
Lifetimes of complexes formed during helium-hydrocarbon collisions at low temperature are estimated for symmetric top hydrocarbons. The lifetimes are obtained using a density-of-states approach. In general the lifetimes are less than 10-100 ns, and are found to decrease with increasing hydrocarbon size.
James F. E. Croft, John L. Bohn
openaire   +3 more sources

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