Results 71 to 80 of about 513,211 (198)

The thermal annealing effect on Crystal Structure and Morphology of Titanium Dioxide (TiO2) powder

open access: yesJurnal Ilmu Dasar, 2014
In this research, crystal structure and morphology of TiO2 (powder) has been observed. TiO2 (powder) was heated by furnace unit at temperature 200 °C - 400 °C to obtain the relation of temperature influences to crystallty and morphology of TiO2 ...
Edy Supriyanto   +2 more
doaj   +1 more source

Advances in On-line Monitoring and Control of the Morphological and Polymorphic Forms of Organic Crystals Grown from Solution

open access: yesKONA Powder and Particle Journal, 2014
Organic crystals grown from solution are known to exhibit multiple morphology as well as habits which are of great importance to the end-use property of the product such as the bioavailability and the downstream ...
Xue Z. Wang   +5 more
doaj   +1 more source

Toward a Comprehensive Model of Snow Crystal Growth: 6. Ice Attachment Kinetics near -5 C [PDF]

open access: yes, 2019
I examine a variety of snow crystal growth measurements taken at a temperature of -5 C, as a function of supersaturation, background gas pressure, and crystal morphology.
Libbrecht, Kenneth G.
core   +1 more source

Nucleation and growth of ice crystals in the atmosphere

open access: yesЛëд и снег, 2015
Nucleation of ice crystals in atmosphere is a result of condensation of water vapor on aerosol particle surface and heterogenic crystallization of the overcooled water micro-aggregations on surface irregularities.
V. N. Golubev
doaj   +1 more source

Catalysts for electrochemical generation of oxygen [PDF]

open access: yes
Several aspects of the electrolytic evolution of oxygen for use in life support systems are analyzed including kinetic studies of various metal and nonmetal electrode materials, the formation of underpotential films on electrodes, and electrode surface ...
Hagans, P., Yeager, E.
core   +1 more source

Growth of single crystals by vapor transport [PDF]

open access: yes
The primary objectives of the program were to establish basic vapor transport and crystal growth properties and to determine thermodynamic, kinetic and structural parameters relevant to chemical vapor transport systems for different classes of materials.
Wiedemeier, H.
core   +1 more source

Orientation-dependent indentation response of helium-implanted tungsten

open access: yes, 2019
A literature review of studies investigating the topography of nano-indents in ion-implanted materials reveals seemingly inconsistent observations, with report of both pile-up and sink-in.
Das, Suchandrima   +3 more
core   +1 more source

Experimental Study on the Influence of Ion Components in Geothermal Water on Scaling Behavior

open access: yesEnergies
Understanding the scaling behavior of geothermal water is essential for optimizing geothermal plant performance and ensuring sustainable energy use. However, research on the effects of common ionic components in geothermal environments on scaling is ...
Yansong Yang, Zhouhang Li, Hua Wang
doaj   +1 more source

Effect of Rare-Earth Element Oxides on Diamond Crystallization in Mg-Based Systems

open access: yesCrystals, 2019
Diamond crystallization in Mg-R2O3-C systems (R = Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb) was studied at 7.8 GPa and 1800 °C. It was found that rare-earth oxide additives in an amount of 10 wt % did not significantly affect both the degree of ...
Yuri N. Palyanov   +3 more
doaj   +1 more source

Fluid dynamics video of domains with spiral dislocations formed in the wake of an enslaved phase-separation front

open access: yes, 2009
Enslaved phase-separation fronts that move with a speed just smaller than that of a free front will leave in their wake a morphology of alternating domains that are roughly aligned with the front.
Foard, E. M., Wagner, A. J.
core  

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