Results 11 to 20 of about 406,447 (269)

Mechanical activation of coal gasification fine slag and mechanical and thermal properties of coal gasification fine slag–poly(vinyl chloride) composites

open access: yesMaterials Research Express, 2023
To facilitate the high-value utilization of activate coal gasification fine slag (CGFS), a wet mechanical activation process was used. As a result of this treatment, CGFS samples with different particle size distributions were obtained.
Kangli Li   +4 more
doaj   +1 more source

Powder Composition Structurization of the Ti-25Al-25Nb (at.%) System upon Mechanical Activation and Subsequent Spark Plasma Sintering

open access: yesEurasian Chemico-Technological Journal, 2021
The results of a study of the microstructure evolution of pre-mechanically activated elementary powders based on the Ti-25Al-25Nb (at.%) compositions differing in the particle size of the aluminum (Al) component are presented.
Ye. А. Kozhakhmetov   +4 more
doaj   +1 more source

A mechanism for active hearing [PDF]

open access: yesCurrent Opinion in Neurobiology, 2007
The remarkable sensitivity, frequency selectivity, and nonlinearity of the cochlea have been attributed to the putative 'cochlear amplifier', which consumes metabolic energy to amplify the cochlear mechanical response to sounds. Recent studies have demonstrated that outer hair cells actively generate force using somatic electromotility and active hair ...
Tianying, Ren, Peter G, Gillespie
openaire   +2 more sources

Role of acid-base interactions in synthesis of cordierite from talc and sillimanite group minerals [PDF]

open access: yesScience of Sintering, 2013
It has been found that the mechanical activation of mixtures of sillimanite group minerals with talc and silica additives in grinding-activating devices with periodic and flow action provides significant acceleration of their interaction with ...
Avvakumov E.G.   +3 more
doaj   +1 more source

Mechanism of charity activity [PDF]

open access: yesActual Problems of Economics and Law, 2015
Objective: to establish the essential properties of the mechanism of charitable activities and to formulate the concept of "mechanism of charitable activity".Methods: the objective of the study is achieved using the complex of methods, which are based on the interaction of dialectical and metaphysi- cal analysis, the epistemological properties of which
R. B. Golovkin, V. I. Zhuravlev
openaire   +2 more sources

Transcriptional activators and activation mechanisms [PDF]

open access: yesProtein & Cell, 2007
Transcriptional activators are required to turn on the expression of genes in a eukaryotic cell. Activators bound to the enhancer can facilitate either the recruitment of RNA polymerase II to the promoter or its elongation. This article examines a few selected issues in understanding activator functions and activation mechanisms.
openaire   +2 more sources

Electrical properties of mechanically activated zinc oxide [PDF]

open access: yesScience of Sintering, 2006
Microstructural properties of a commercial zinc oxide powder were modified by mechanical activation in a high-energy vibro-mill. The obtained powders were dry pressed and sintered at 1100°C for 2 h.
Vojisavljević K.   +3 more
doaj   +1 more source

Mechanics of active surfaces [PDF]

open access: yesPhysical Review E, 2017
We derive a fully covariant theory of the mechanics of active surfaces. This theory provides a framework for the study of active biological or chemical processes at surfaces, such as the cell cortex, the mechanics of epithelial tissues, or reconstituted active systems on surfaces.
Salbreux, G., Jülicher, F.
openaire   +4 more sources

Modification of the structural and optical properties of commercial ZnO powder by mechanical activation [PDF]

open access: yesScience of Sintering, 2006
Mechanical activation was used as a method for modification of the structural and optical properties of commercial ZnO powder. For this purpose zinc oxide powder was mechanically treated by grinding in a high-energy vibro-mill in a continual regime in ...
Šćepanović M.   +3 more
doaj   +1 more source

The formation mechanism of the porous structure of glass ceramics from siliceous rock

open access: yesMagazine of Civil Engineering, 2020
Porous glass ceramic materials are widely used in industrial and civil engineering due to a number of redeeming features, such as high strength, low thermal conductivity, incombustibility, environmental friendliness, etc. A large number of researches are
Anatolij Ermakov   +3 more
doaj   +1 more source

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