Synonym: dross, impureness. Similar words: purity, impure, puritan, impunity, puritanical, maturity, security, obscurity. Meaning: [ɪm'pjʊrətɪ /-'pjʊər-] n. 1. worthless or dangerous material that should be removed 2. the condition of being impure.
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(151) The results show that the main components of inclusion are carbon and oxygen. Carbon impurity comes from graphite crucible and heater, while oxygen impurity from the oxides in the raw material...
(152) In the concentrated nitric acid production, the hazard and control of impurity in the magnesium nitrate solution are introduced.
(153) Procedures should provide for comparing the impurity profile of each reworked batch against batches manufactured by the established process.
(154) The affection of ferromagnetic impurity flowing through measuring field also simulated and studied.
(155) In this study, through the impurity distribution, organization and resistivity analysis, it evaluates the directional solidification purification effect on the polysilicon in the round.
(156) Non alcohol impurity in isopentanol and optical pentanol are measured with the method of chemical analysis. Offer simple detection method for their producing, offer reference for their use.
(157) The bigger the atomic number(sentencedict.com), the deeper the impurity level is.
(158) When the process parameters are not appropriate, the oxide and impurity congregate between the layered microstructures.
(159) Product should be prevented from solarization, drenching, over-heat and impurity entering the package barrel during delivery.
(160) A hard problern is free from impurity iron in tbe preparation of cupric sulfate from spongy - copper.
(161) These data can be used to estimate the lifetime of plasma facing components and analyze the impurity level in core plasma of fusion reactors.
(162) The filtration cycle and slag discharge time of dumping dregs valve is controlled by microcomputer automatically according to impurity content, and it has reserve manual switching function.
(163) Efficiencies: The gentle formula can quickly cleanse the impurity and dispel the ageing cell of scarfskin , reduce moisture loss by cleansing. After use, let skin refreshing and nutritive.
(164) The effect of impurity on classical Wigner lattice is investigated in the fourth chapter.
(165) HPLC method for determination of L-isomer as impurity in nateglinide and its tablets was established.
(166) The results show that the residual resistance ration relates not only to the aging temperature and the impurity concentration of the metal, but also to the aging time.
(167) Feedstock demands meeting hydrocarbon steam reforming process including impurity contents of olefins, aromatics, sulfur, arsenic and chloride, as well as dry point of light fraction were introduced.
(167) Wish you can benefit from our online sentence dictionary and make progress every day!
(168) This is because of the impurity nitride ( MmNn ) in glass.
(169) These data might be useful to estimate the lifetime of plasma facing components and to analyze the impurity level in core plasma of fusion reactors.
(170) Space charges might be due to the injection charges, the impurity ions and the orientation of small molecule dipoles , among which the orientation of small molecule dipoles seem predominate.
(171) Calculations have been made for the configurations of single-walled carbon nanotubes containing substitutional nitrogen impurity atoms with ab initio density functional theory.
(172) Chemical products often need control of their trace iron contents as impurity.
(173) An impurity profile describing the identified and unidentified impurities present in a typical batch produced by a specific controlled production process should normally be established for each API.
(174) Moreover, the presence of Ce ~ ( 3 + ) impurity causes the absorption band at 306 nm.
(175) In the second part, using the wave function and binding energy obtained from the first part, the photoionization cross-section of the impurity is calculated.
(176) Quality assessment of starting materials from multiple sources and the impact of starting material impurities on the impurity profile of the drug substance are discussed with illustrative examples.
(177) The main principle of washing and filtering is to use the insolubility of the metatitanic acid in water and the solubility of the impurity ions in water to separate the liquid and solid.
(178) Their impurity derived from their traditional occupations, such as the taking of life and the treatment of bodily effluvia .
(179) The radiated power of impurity ions varying with time and electron temperature for given the profiles of electron temperature and density is calculated, and the corresponding physics is discussed.
(180) And on the basis of device on-resistance study, we optimized the main factors of power VDMOS cellular on-resistance, such as poly width and the impurity concentration of epitaxial layer.
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