Results 111 to 120 of about 540,315 (294)

Atmospheric environment for Space Shuttle (STS-11) launch [PDF]

open access: yes
Atmospheric conditions observed near Space Shuttle STS-11 launch time on February 3, 1984, at Kennedy Space Center, Florida are summarized. Values of ambient pressure, temperature, moisture, ground winds, visual observations (cloud), and winds aloft are ...
Batts, G. W.   +2 more
core   +1 more source

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

open access: yesAdvanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič   +7 more
wiley   +1 more source

Effects of Temperature on Thermodynamic parameters and Carbon Nanotubes Growth Rate on Aluminum Electrode in Electrochemical deposition Process

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2017
 The optimum process conditions of the electrochemical deposition of carbon nanotubes (CNT) have been established by using developed, cheap and simple system.
A. I. Rasheed
doaj  

Thermodynamic Calculations of Hydrogen-Oxygen Detonation Parameters for Various Initial Pressures [PDF]

open access: yes, 1961
Composition, temperature, pressure and density behind a stable detonation wave and its propagation rate have been calculated for seven hydrogen-oxygen mixture at 1, 5, 25 and 100 atm initial pressure, and at an initial temperature of 40C.
Bollinger, Loren E., Edse, Rudolph
core   +1 more source

Copper Nanocrystallization in Anodic Oxide Films of Ti–Cu‐Based Bulk Metallic Glass and Its Effect on the Corrosion Resistance and Cytocompatibility

open access: yesAdvanced Engineering Materials, EarlyView.
Viktoriia Shtefan, Thorgund Nemec, Ute Hempel, Annett Gebert and coworkers demonstrate that anodic treatment of Ti–Cu‐based metallic glass in a nontoxic pyrophosphate electrolyte forms a protective bilayered Ti/Zr‐oxide film enriched with Cu nanocrystals.
Viktoriia Shtefan   +8 more
wiley   +1 more source

Adsorption Behavior of Copper in Some Calcareous Soils from Duhok Governorate

open access: yesScience Journal of University of Zakho, 2016
Soil samples were taken from the surface layer of eight locations (Smail Ava, Khanki, Khirshanya,  Esyan, Mahed, Suwaratoka, Bamerny and Tirwanish) Duhok governorate -Iraqi Kurdistan region, to evaluate the adsorption and thermodynamic parameters of ...
Lazkeen A. M. Mehmedany   +2 more
doaj  

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

open access: yesAdvanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho   +8 more
wiley   +1 more source

SELECTIVE LIQUID-SOLID EXTRACTION OF Cr (III) FROM Cr (III) AND Fe (III) MIXTURE BY CHELEX 100 RESIN

open access: yesScientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry, 2019
This work focuses on the liquid-solid extraction of the mixture chromium (III) and iron (III) by the resin Chelex 100. The influence of operating parameters as equilibrium time (2 to 45 min), the initial pH of aqueous solution (1.06 to 3.97), effect of ...
AFAF AMARA-REKKAB , MOHAMED AMINE DIDI
doaj  

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