scholarly journals Beryllium Sulfate

2020 ◽  
Author(s):  
Keyword(s):  
Beryllium Sulfate

scholarly journals Diffusion Coefficients in Aqueous Solutions of Beryllium Sulfate at 298 K

1994 ◽  
Vol 39 (4) ◽  
pp. 726-728 ◽  
Author(s):  
Victor M. Lobo ◽  
Ana C. Ribeiro ◽  
Luis M. Verissimo
Keyword(s):  
Aqueous Solutions ◽  
Diffusion Coefficients ◽  
Beryllium Sulfate

Is phosphorylation the main physiological action of myosin light chain kinase?

1994 ◽  
Vol 72 (11) ◽  
pp. 1377-1379 ◽  
Author(s):  
Setsuro Ebashi ◽  
Hideto Kuwayama
Keyword(s):  
Amino Acid ◽  
Light Chain ◽  
Myosin Light Chain Kinase ◽  
Myosin Light Chain ◽  
Actin Binding ◽  
In Vitro System ◽  
Beryllium Sulfate ◽  
Kinase Phosphorylation ◽  
Actin Binding Site

The 155-kDa component of bovine stomach, which exhibits a strong actomyosin (AM) activating activity and a relatively weak myosin light chain kinase (MLCK) activity, has a strong affinity for the actin filament and the actin-binding site is confined to an 80 amino acid residue on its N-terminal side. This affinity may play a crucial role in AM activation. Some reagents preferentially abolish either the AM-activating effect or MLCK activity. In conclusion, MLCK of the 155-kDa component does not play a fundamental role in activating the AM system as far as the in vitro system is concerned. The possible mechanism of AM activation by the component is discussed.Key words: myosin light chain kinase, phosphorylation of myosin light chain, leiotonin, wortmannin, beryllium sulfate.

Diffusion with hydrolysis and ion association in aqueous solutions of beryllium sulfate

1996 ◽  
Vol 25 (3) ◽  
pp. 231-242 ◽  
Author(s):  
Ling Hao ◽  
Ruanhui Lu ◽  
Derek G. Leaist
Keyword(s):  
Aqueous Solutions ◽  
Ion Association ◽  
Beryllium Sulfate

Gene expression profile in BALB/c-3T3 cells transformed with beryllium sulfate

2001 ◽  
Vol 32 (1) ◽  
pp. 28-35 ◽  
Author(s):  
Pius Joseph ◽  
Timothy Muchnok ◽  
Tong-man Ong
Keyword(s):  
Gene Expression ◽  
Gene Expression Profile ◽  
Expression Profile ◽  
3T3 Cells ◽  
Beryllium Sulfate

Features of recording the analytical signal of beryllium using APESI mass-spectrometry and different procedures of sample preparation

2020 ◽  
Vol 86 (7) ◽  
pp. 7-11
Author(s):  
A. A. Dyachenko ◽  
N. M. Blashenkov ◽  
N. S. Samsonova ◽  
L. N. Gall ◽  
A. A. Semyonov ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Internal Standard ◽  
Analytical Signal ◽  
Relative Sensitivity ◽  
Measurement Procedure ◽  
Complex Compounds ◽  
Close Relative ◽  
Experimental Conditions ◽  
Solution Preparation ◽  
Beryllium Sulfate

The significance of the problem of determining the concentration of beryllium in solutions is substantiated. A method of APESI mass-spectrometry (atmospheric pressure electrospray ionization with in-source atomization) is compared with a number of other common procedures used for solving the aforementioned problem and a number of advantages of APESI mass spectrometry are highlighted. The possibility of measuring the beryllium concentration in various chemical forms using APESI mass-spectrometry is studied. We used sulfate, nitric acid and chloride salts of beryllium. The measurements were carried out on a specialized small-sized mass spectrometer MI-20 «LowMass» developed at MS-Bio Company, Russia. A schematic diagram of the device designed to determine the concentration of beryllium in solutions is presented and described. A technique of solution preparation and measurement procedure are proposed. Presented ass spectra obtained on the samples containing beryllium and lithium isotopes were used as an internal standard. It is shown that beryllium can be detected from the salts of chloride and nitric acids with close relative sensitivity coefficients. The obtained detection limit for beryllium chloride in those measurements was ~1 – 2 × 10–8 M. At the same time, the analytical signal of beryllium cannot be detected during electrospray of the solution of beryllium sulfate under any experimental conditions. It has been suggested that this effect may be attributed to the features of dissolution of beryllium sulfate, in particular, to hydrolysis and formation of complex compounds with sulfate, including complex polymer and colloidal forms.

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