Results 141 to 150 of about 663,172 (393)

Emission of some rare gases at the Los Azufres, Mexico, geothermal reservoir [PDF]

open access: yesGeofísica Internacional, 2002
The chemistry of fluids in the Los Azufres, Mexico geothermal field originated from volcanic processes and is controlled by temperatures at depth, mineral solubility, pH values and mineral equilibrium.
Mario César Suárez Arriaga
doaj  

Primordial argon isotope fractionation in the atmosphere of Mars measured by the SAM instrument on Curiosity and implications for atmospheric loss

open access: yesGeophysical Research Letters, 2013
The quadrupole mass spectrometer of the Sample Analysis at Mars (SAM) instrument on Curiosity rover has made the first high‐precision measurement of the nonradiogenic argon isotope ratio in the atmosphere of Mars. The resulting value of 36Ar/38Ar = 4.2 ± 
S. Atreya   +14 more
semanticscholar   +1 more source

Mechanisms of Increasing Weld Depth during Temporal Power Modulation in High‐Power Laser Beam Welding

open access: yesAdvanced Engineering Materials, EarlyView.
Temporal power modulation increases weld depth in high‐power laser beam welding of dissimilar round bars by nearly 20% compared to same average continuously welded welding power. The mechanism of action also applies to sheet welding and depends on the inertia of keyhole depth for the modulated laser beam power.
Jan Grajczak   +7 more
wiley   +1 more source

A Novel Approach to Produce Metal–Metal Composites by Leveraging Immiscibility: Laser Powder Bed Fusion of Nanosilver‐Dispersed Titanium

open access: yesAdvanced Engineering Materials, EarlyView.
Incorporating nanosized silver into titanium for antimicrobial materials exploits the metastable miscibility gap between silver and titanium. Silver nanoparticles are synthesized via pulsed laser ablation in liquid. Silver addition refines the microstructure, increases hardness by 30%, and reduces Staphylococcus capitis microbial adhesion by 70%, with ...
Hamed Shokri   +4 more
wiley   +1 more source

Argon reduces neurohistopathological damage and preserves functional recovery after cardiac arrest in rats.

open access: yesBritish Journal of Anaesthesia, 2013
BACKGROUND Xenon has profound neuroprotective effects after neurological injury and is currently undergoing phase 2 clinical trials in cardiac arrest patients. However, xenon is very costly, which might preclude its widespread use. We hypothesized argon,
Anne Brücken   +9 more
semanticscholar   +1 more source

Maillard Type Reaction for Electroless Copper Plating onto Ceramic Nanoparticles

open access: yesAdvanced Engineering Materials, EarlyView.
This work presents the manufacturing of copper‐plated ceramic nanoparticles in an environmentally friendly way. Supported by organic functionalizations with pectin an electroless plating step can be performed. Sustainable reagents like xylose, and several amino acids are used for the reduction process.
Lukas Mielewczyk   +8 more
wiley   +1 more source

Physical modelling of removing hydrogen from liquid aluminium conducted in URC-7000 reactor

open access: yesMetalurgija, 2014
The research which visualizes the process of argon blowing through modelling agent in continuous URC-7000 reactor was carried out. Physical model was built according to the theory of similarity.
M. Saternus, T. Merder, J. Pieprzyca
doaj  

Study of nuclear recoils in liquid argon with monoenergetic neutrons

open access: yes, 2012
For the development of liquid argon dark matter detectors we assembled a setup in the laboratory to scatter neutrons on a small liquid argon target. The neutrons are produced mono-energetically (E_kin=2.45 MeV) by nuclear fusion in a deuterium plasma and
  +21 more
core   +1 more source

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