نتایج جستجو برای high pressure liquid

تعداد نتایج: 1602048  
2003
RUEDI LUTHY,

An isocratic reversed-phase high-pressure liquid chromatographic method for the determination of six components of the teicoplanin complex in biological fluid was developed. By using fluorescence detection after precolumn derivatization with fluorescamine, the assay is specific and highly sensitive, with reproducibility studies yielding coefficients of variation ranging from 1.5 to 8.5% (at 5 t...

2002
Glenville Jones, Hector F. DeLuca,

The high-pressure liquid chromatographic separation of ail of the known metabolites of vitamin D2 and vitamin D3 found in biological fluids has been achieved. This technique has been successfully applied to the analysis of vitamin D mixtures, purification of vitamin D metabolites, and identification of radioactive peaks. Some theoretical bases for the observed resolutions are suggested. Supplem...

2001
Mary B. LoPresti, Kathryn L. Stone, Kenneth R. Williams,

Two single-stranded nucleic acid-binding proteins, UP1 and UP2, that were originally reported by Herrick and Alberts (Herrick, G., and Alberts, B. (1976) J. Biol. Chem. 251,2124-2132) have been purified to apparent homogeneity from calf thymus by high performance liquid chromatography. The amino acid sequence of UP1 (Williams, K. R., Stone, K. L., LoPresti, M. B., Merrill, B. M., and Planck, S....

Journal: :Annals of clinical biochemistry 1976
P F Dixon, M S Stoll,

Following your need to always fulfil the inspiration to obtain everybody is now simple. Connecting to the internet is one of the short cuts to do. There are so many sources that offer and connect us to other world condition. As one of the products to see in internet, this website becomes a very available place to look for countless high pressure liquid chromatography in clinical chemistry sourc...

2002
Michael D. Rutter, Richard A. Secco, Hongjian Liu, Takeyuki Uchida, Mark L. Rivers, Stephen R. Sutton, Yanbin Wang,

Synchrotron x-ray radiography has been used to measure the viscosity of pure liquid Fe at high pressure and temperature in a large volume press. A probe sphere rising through liquid Fe at high pressure and temperature is imaged, in situ, allowing for the derivation of sample viscosity through a modified form of Stokes’ equation. The effect of pressure on viscosity is fit by the semi empirical f...

Journal: :Antimicrobial agents and chemotherapy 1983
A Weber, K E Opheim, K Wong, A L Smith,

We describe a rapid, precise, and simple procedure for the quantitation of azlocillin in serum and in aqueous solutions by high-pressure, reverse-phase liquid chromatography. This method uses a single precipitation step, detection by dual-wavelength monitoring (220 and 254 nm), and quantitation by comparison with an internal standard. The 10-micron C18 muBondapak column was eluted with 45% (vol...

A new model for the vapor phase of a pressurized liquid called "the cluster model: which is originally introduced in this work, along with an accurate equation of state for the liquid phase called the LIR, is used to derive an accurate equation for the vapor pressure of liquid as a function of external pressure. The chemical Potential of both phase have been found to be in good agreement wi...

2012
A. Asenbaum,

Brillouin spectra have been measured in liquid Benzene at high pressures up to 1300 bar and at the temperatures 298.15 K, 313.15 K, 323.15 K. and 343.15 K. From the experimental spectra the hypersound velocities and the energy relaxation times were determined. The total velocity dispersion v \ j v \ due to the relaxation of the vibrational specific heat c, is found to be nearly density independ...

Journal: :Clinical chemistry 1976
M A Evenson, B L Warren,

We have developed and evaluated a rapid, high-pressure liquid-chromatographic method for theophylline in serum. Only 0.2 ml of serum is required for each determination, and the sensitivity of this method is 0.5 mg/liter. This method, involving liquid extraction and silica adsorption chromatography, provides adequate selectivity, accuracy, and precision for routine or research applications. Litt...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Ove Andersson,

The knowledge of the existence of liquid water under extreme conditions and its concomitant properties are important in many fields of science. Glassy water has previously been prepared by hyperquenching micron-sized droplets of liquid water and vapor deposition on a cold substrate (ASW), and its transformation to an ultraviscous liquid form has been reported on heating. A densified amorphous s...

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