On the basis of field geological investigation, through studing the SEM characteristics of quarts grain from pug in faults F1,F2,F3 in Qinhuangdao city, it is considered that the latest active time of F1 fault was in early-mid Pleistocene,the latest active time of F2 fault was in middle-late period of late Pleistocene,and the latest active time of F3 fault was in the end of late Pleistocene or early Holocene.
Through researches of the distribution patterns of REE in magmatic rocks, ores, ore minerals, quarts and native gold, this paper proposes that this deposit is genetically related to Hercy-Yanshanian intrusive rocks originated from crust-mantle migma;
At the phase angles between 0.5° and 3.0°, the polarization for quartz powder with 10-μm particles is almost constant.
To study the inhibitory effect of oxymatrine (OM) on quartz-induced secretion of TNF-α in the fibroblast proliferation, a given amount of quartz powder and OM of different concentrations were put into the media of pure culture containing macrophages.
For example, fast saponification reactions as well as long lasting adsorption reactions of NaOH on quartz powder were recorded.
A single crystal of plagioclase was surrounded by quartz powder and water.
An investment based on hard plaster loaded with fine-grained quartz powder and good chemical removability was investigated.
Adsorption isotherm of cationic polyelectrolyte, poly(styrene-co-dimethylaminopropylmaleimide), (molecular mass is 2 × 104) on the surface of fused quartz in aqueous 10-4 M KCl solution at pH 3 was measured by the method of capillary electrokinetics.
The Effect of Composition of Water-Ethanol Solutions on the Kinetics of Coagulation of Fused Quartz Suspensions
The effect of composition of water-ethanol solutions containing 0-96 vol % alcohol on the coagulation kinetics of dilute fused quartz suspensions is studied using flow ultramicroscopy technique.
Regularities of the Two-Layer Adsorption of Anionic Surfactant and Cationic Polyelectrolyte on the Fused Quartz Surface
Permittivities of Ftoroplast-4 fluoroplastic, fused quartz, single-crystal quartz, and other dielectrics measured in a frequency band of 10-70 GHz are presented.
The method is based on the reduction of inorganic selenium to volatile SeH2 which is bubbled out by carrier gas of pure argon, and then swept to Ar-H2 flame quarts atomizer to measure its fluorescence intensity.
La durée de celle-ci a néanmoins été réduite des trois quarts dans certaines circonstances, rendant possible l'éclosion des larves avant l'hiver.
Less often the reactions: "amorphous silica→cristobalite→quartz" and: "amorphous silica→keatite→quarts" were observed.
Eleven applications of 2 quarts of a 0.25 per cent suspension per head produced total residues of DDT, TDE and DDE that exceeded the acceptable tolerance of 7 p.p.m.
Effect of radiation of the optical characteristics of quarts glass