Rapid Fluorescence Determination of the Absolute Amount of Aldehyde and Ketone Groups on Resin Supports

1997 ◽  
Vol 62 (26) ◽  
pp. 9354-9357 ◽  
Author(s):  
Bing Yan ◽  
Wenbao Li
Keyword(s):  
Absolute Amount ◽  
Fluorescence Determination ◽  
The Absolute

scholarly journals Hydroxide in olivine: A quantitative determination of the absolute amount and calibration of the IR spectrum

2003 ◽  
Vol 108 (B2) ◽  
Author(s):  
David R. Bell ◽  
George R. Rossman ◽  
Joachim Maldener ◽  
Denis Endisch ◽  
Friedel Rauch
Keyword(s):  
Quantitative Determination ◽  
Ir Spectrum ◽  
Absolute Amount ◽  
The Absolute

Hydroxide in kyanite: A quantitative determination of the absolute amount and calibration of the IR spectrum

2004 ◽  
Vol 89 (7) ◽  
pp. 998-1003 ◽  
Author(s):  
David. R. Bell ◽  
George R. Rossman ◽  
Joachim Maldener ◽  
Denis Endisch ◽  
Friedel Rauch
Keyword(s):  
Quantitative Determination ◽  
Ir Spectrum ◽  
Absolute Amount ◽  
The Absolute

INFLUENCE OF STRESS AND ENDOCRINE FACTORS ON PLASMA PROTEINS IN THE RAT

1959 ◽  
Vol XXXII (IV) ◽  
pp. 552-562 ◽  
Author(s):  
Lennart Enerbäck ◽  
Per M. Lundin ◽  
Jan Mellgren
Keyword(s):  
Serum Protein ◽  
Serum Proteins ◽  
Albino Rats ◽  
Absolute Amount ◽  
Electrophoretic Separation ◽  
Hypophysectomized Rats ◽  
Endocrine Factors ◽  
The Absolute ◽  
Electrophoretic Spectrum

ABSTRACT The effects have been studied in albino rats of experimental stress, adrenalectomy, hypophysectomy and somatotrophin (STH) on the relative serum protein fractions, as determined from estimations of serum protein concentrations and the results of paper electrophoretic separation. In addition, the absolute amounts of serum proteins obtained from concurrent electrophoretic separation, estimation of serum protein concentration and determination of plasma volume were studied. It appeared inter alia that hypophysectomy gave rise to a reduction in the absolute amount of serum proteins, which was due to a reduction in the albumin + alpha1 globulin fraction while the other globulin fractions remained unaffected. STH administration caused an increase in both the albumin and globulin fractions in hypophysectomized rats. Formalin stress was accompanied by changes in the electrophoretic spectrum suggesting an increased globulin synthesis. Since stress is known to give rise to a proliferation of the lymphoid organs which, at least to some extent, is caused by STH we consider it justifiable to conclude that the probable enhancement of globulin synthesis accompanying stress is due to the action of STH.

The Microtome Method of the Determination of the Absolute Amount of Adsorption

1932 ◽  
Vol 36 (1) ◽  
pp. 300-311 ◽  
Author(s):  
J. W. McBain ◽  
C. W. Humphreys
Keyword(s):  
Absolute Amount ◽  
The Absolute

Polarity Determination in Sphalerite and Wurtzite Structures

1990 ◽  
Vol 48 (2) ◽  
pp. 500-501
Author(s):  
Stuart McKernan ◽  
C. Barry Carter
Keyword(s):  
Opposite Polarity ◽  
Single Domain ◽  
Polar Material ◽  
Electron Microscopic ◽  
Dynamical Interaction ◽  
X Ray ◽  
Polarity Determination ◽  
The Absolute ◽  
Microscopic Techniques

The determination of the absolute polarity of a polar material is often crucial to the understanding of the defects which occur in such materials. Several methods exist by which this determination may be performed. In bulk, single-domain specimens, macroscopic techniques may be used, such as the different etching behavior, using the appropriate etchant, of surfaces with opposite polarity. X-ray measurements under conditions where Friedel’s law (which means that the intensity of reflections from planes of opposite polarity are indistinguishable) breaks down can also be used to determine the absolute polarity of bulk, single-domain specimens. On the microscopic scale, and particularly where antiphase boundaries (APBs), which separate regions of opposite polarity exist, electron microscopic techniques must be employed. Two techniques are commonly practised; the first [1], involves the dynamical interaction of hoLz lines which interfere constructively or destructively with the zero order reflection, depending on the crystal polarity. The crystal polarity can therefore be directly deduced from the relative intensity of these interactions.

X-ray fluorescence determination of zinc sulfate in acidic zinc plating electrolyte

2020 ◽  
Vol 86 (10) ◽  
pp. 18-22
Author(s):  
K. N. Vdovin ◽  
K. G. Pivovarova ◽  
N. A. Feoktistov ◽  
T. B. Ponamareva
Keyword(s):  
Zinc Sulfate ◽  
Zinc Coating ◽  
Electrolyte Composition ◽  
Complexometric Titration ◽  
X Ray ◽  
Fluorescence Determination ◽  
Zinc Plating ◽  
Zinc Determination

Zinc sulfate is the main component in the composition of the acidic zinc plating electrolyte. Deviation in the electrolyte composition from the optimum content leads to destabilization of the electrolysis process and deteriorate the quality of the resulting zinc coating. The proper quality of a zinc coating obtained by galvanic deposition can be ensured only with timely monitoring and adjustment of the electrolyte composition. A technique of X-ray fluorescence determination of zinc (in terms of zinc sulfate) in an acidic zinc plating electrolyte is proposed. The study was carried out using an ARL Quant’X energy dispersive spectrometer (Thermo Fisher Scientific, USA) with a semiconductor silicon-lithium detector. The features of the spectrometer design are presented. The optimal parameters of excitation and detection of zinc radiation were specified when the electrolyte sample was diluted 1:1000. The ZnKα1 line was used as an analytical line. The plotted calibration graph is linear, the correlation coefficient being 0.999234. The results of zinc determination according to the developed method were compared with the data of the reference method of complexometric titration to prove the reliability of the procedure. The results are characterized by good convergence and accuracy. The proposed method of X-ray fluorescence zinc determination in a zinc plating electrolyte equals complexometric titration in the limiting capabilities and even exceeds the latter in terms of the simplicity of sample preparation and rapidity. The developed method of X-ray fluorescence determination of zinc is implemented in analysis of the electrolyte used in the continuous galvanizing unit at «METSERVIS LLC».

X-Ray Fluorescence Determination of Ore Elements in Ferromanganese Formations

2020 ◽  
Vol 56 (14) ◽  
pp. 1423-1430
Author(s):  
V. M. Chubarov ◽  
A. A. Amosova ◽  
A. L. Finkelshtein
Keyword(s):  
X Ray ◽  
Fluorescence Determination

A DORIS determination of the absolute velocities of the Sorsdal and Mellor glaciers in Antarctica

2010 ◽  
Vol 45 (12) ◽  
pp. 1523-1534 ◽  
Author(s):  
R. Govind ◽  
J.J. Valette ◽  
F.G. Lemoine
Keyword(s):  
The Absolute
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