نتایج جستجو برای: solvent validation
تعداد نتایج: 229091 فیلتر نتایج به سال:
objectives: the present research aims to prepare an iranian police job satisfaction inventory (ipjsi) by using confirmative factor analysis as well as to evaluate the validity and reliability of it. method: a group consisting of 2933 iranian police employees chosen by stratified random sampling method from a number of police departments throughout the country completed the ipjs inventories. val...
Biological Indicators (B.I.'s) have traditionally been employed in the validation and routine monitoring of sterilization processes used for the manufacture and control of pharmaceuticals and medical devices. In this paper, the phrase "Endotoxin Indicator" has been coined to describe a tool analogous to the BI which can be used in the validation and routine control of endotoxin reduction proces...
We describe a statistical approach to the validation and improvement of molecular dynamics simulations of macromolecules. We emphasize the use of molecular dynamics simulations to calculate thermodynamic quantities that may be compared to experimental measurements, and the use of a common set of energetic parameters across multiple distinct molecules. We briefly review relevant results from the...
The reaction heat of CO2 absorption by organic amines is directly related to the regenerative consumption absorbers. Therefore, it necessary study and determine regeneration capture solvent before its industrial validation application. According law thermodynamics, a computer model desorption established verified. AEP-DPA phase transition system was studied under different ratios, temperatures,...
Based on solvation studies of polymers, the sum (1:1) of the electron acceptor (AN) and electron donor (DN) values of solvents has been proposed as an alternative polarity scale. To test this, the electron paramagnetic resonance isotropic hyperfine splitting constant, a parameter known to be dependent on the polarity/proticity of the medium, was correlated with the (AN+DN) term using three para...
a simple, sensitive and selective method for solvent extraction and spectrophotemetric determination of lanthanum (ii) europium (iii), and cerium (iii) is described , the rare earth metals are extracted into chloroform solution of n-phenylbenzohydroxamic acid (pbha) at ph 9-10 various parameters are studied to optimize the extraction conditions. the molar absorptivity is found to increase from ...
A new, simple, rapid, sensitive and environmentally friendly ultrasound-assisted emulsification dispersive liquid–liquid microextraction (UAE-DLLME) has been developed for trace nickel Ni(II) separation preconcentration in environmental samples prior to spectrophotometric determination. The proposed method based on using non-ionic water-soluble surfactant Triton X-114 (TX-114) as a disperser so...
A simple, rapid, and sensitive fluorimetric method was developed validated to quantify quassia in polymeric nanocapsule suspensions non suspensions, using acetonitrile as a solvent. The excitation emission wavelengths were set at 397 nm 465 nm, respectively. calibration graph linear from 0.05 0.25 µg/mL with correlation coefficient of 0.9892. detection quantitation limits 2.4 0.8 µg/mL, validat...
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