Rapid determination of ethylene glycol in biological material

1986 ◽  
Vol 96 (1) ◽  
pp. 23-26 ◽  
Author(s):  
M. Bogusz ◽  
J. Białka ◽  
J. Gierz ◽  
M. Kłys
Keyword(s):  
Ethylene Glycol ◽  
Biological Material ◽  
Rapid Determination

Single-Reagent Method for Rapid Determination of Total Bilirubin with the "CentrifiChem" Analyzer

1973 ◽  
Vol 19 (12) ◽  
pp. 1366-1369 ◽  
Author(s):  
Gerhard Ertingshausen ◽  
Diane L Fabiny Byrd ◽  
Thomas O Tiffany ◽  
Sandra J Casey
Keyword(s):  
Ethylene Glycol ◽  
Total Bilirubin ◽  
Rapid Determination ◽  
Precision Data ◽  
Union Carbide

Abstract We report a rapid single-reagent method for determining total bilirubin with the " CentrifiChem Analyzer" (Union Carbide Corp.). The reagent is the stable 1,5-disulfonate of diazosulfanilic acid, and ethylene glycol is used as an accelerator. The reaction requires less than 5 min. Only 25 µl of serum is needed. We present precision data (x = 2.62 mg/dl, SD = .082 mg/dl, CV = 3.13%) and results (r = .998) as compared with those obtained by an automated Jendrassik—Grof method.

Determination of Water in Silage by Fischer Titration of Concentrated Ethanolic Suspensions

1964 ◽  
Vol 47 (4) ◽  
pp. 738-744
Author(s):  
Milan F Dubravčić
Keyword(s):  
Ethylene Glycol ◽  
Coefficient Of Variation ◽  
Rapid Determination ◽  
Added Water

Abstract A method is described for rapid determination of water in ensiled fodder materials. The procedure is based on a brief homogenization of 10—20% suspensions of samples in ethanol followed by titration of gravimetric aliquots with Fischer reagent. It has been found that the concentration of water in the alcoholic phase quickly reaches an equilibrium that is linearly related to the proportion of sample in the mixture and, accordingly, equal to the concentration of water in the suspended tissue. The uniformity of distribution of water simplifies both the aliquoting and the calculation. No interfering reactions have been encountered and the recovery of added water is close to 100%. Ethanol as solvent gives less variable results than either methanol or ethylene glycol. Incorporation of a dry box in the titration apparatus considerably improves the precision of the titration. Coefficient of variation of the titration is about 0.2%.

Studies on the Determination of Bile Pigments

1964 ◽  
Vol 10 (2) ◽  
pp. 95-102 ◽  
Author(s):  
G W Stevenson ◽  
S L Jacobs ◽  
R J Henry
Keyword(s):  
Ethylene Glycol ◽  
Extraction Method ◽  
Total Bilirubin ◽  
Rapid Determination ◽  
Bile Pigments ◽  
Single Tube ◽  
Chloroform Layer ◽  
The Difference ◽  
Conjugated Bilirubin

Abstract The absorbance at 450 mµ of serum diluted with acidified ethylene glycol is used as a measure of the serum's total bilirubin content in a single-tube, single-extraction method for rapid determination of free and total bilirubin in 0.1 ml. of serum. With the addition of chloroform, free bilirubin is extracted into the chloroform but conjugated bilirubin remains in the ethylene glycol. Free bilirubin is determined from the absorbance at 450 mµ in the chloroform layer. Conjugated bilirubin is calculated from the difference. Absorbance readings at 520 mµ compensate for the absorbance at 450 mµ, due to hemoglobin in the serum. Comparison with the Malloy-Evelyn procedure showed equivalent levels of total but higher levels of conjugated bilirubin.

Weak Beam Imaging and Diffraction Studies of Stacking Faults in Silicon

1976 ◽  
Vol 34 ◽  
pp. 590-591
Author(s):  
T. Y. Tan ◽  
W. K. Tice
Keyword(s):  
Fast Neutron ◽  
Rapid Determination ◽  
Stacking Faults ◽  
Imaging Method ◽  
Large Reduction ◽  
Dislocation Loops ◽  
Fringe Spacing ◽  
Weak Beam ◽  
Kinematical Theory

In studying ion implanted semiconductors and fast neutron irradiated metals, the need for characterizing small dislocation loops having diameters of a few hundred angstrom units usually arises. The weak beam imaging method is a powerful technique for analyzing these loops. Because of the large reduction in stacking fault (SF) fringe spacing at large sg, this method allows for a rapid determination of whether the loop is faulted, and, hence, whether it is a perfect or a Frank partial loop. This method was first used by Bicknell to image small faulted loops in boron implanted silicon. He explained the fringe spacing by kinematical theory, i.e., ≃l/(Sg) in the fault fringe in depth oscillation. The fault image contrast formation mechanism is, however, really more complicated.

Methods for rapid determination of pecan (Carya illinoensis) seed viability

2017 ◽  
Vol 45 (2) ◽  
pp. 455-464
Author(s):  
T.T. Xue ◽  
J. Liu ◽  
Y.B. Shen ◽  
G.Q. Liu
Keyword(s):  
Rapid Determination ◽  
Seed Viability ◽  
Carya Illinoensis
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