scholarly journals Structural silicone sealants after exposure to laboratory test for durability assessment

2021 ◽  
pp. 50881
Author(s):  
Wilma Wallau ◽  
Christoph Recknagel ◽  
Glen J. Smales
Keyword(s):  
Laboratory Test ◽  
Structural Silicone ◽  
Durability Assessment

Application of Traveltime Tomography to GPR Data: a Preliminary Laboratory Test.

2008 ◽  
Vol 1 (1) ◽  
pp. 83-93 ◽  
Author(s):  
M. B. GALATI ◽  
T. QUARTA ◽  
L. NUZZO ◽  
M. FEDI ◽  
B. GAROFALO
Keyword(s):  
Laboratory Test ◽  
Traveltime Tomography

Treatment of maternal hyperthyroidism with antithyroid agents and changes in thyrotrophin and thyroxine in the newborn

1981 ◽  
Vol 97 (2) ◽  
pp. 186-195 ◽  
Author(s):  
B.-A. Lamberg ◽  
E. Ikonen ◽  
K. Teramo ◽  
G. Wägar ◽  
K. Österlund ◽  
...  
Keyword(s):  
Laboratory Test ◽  
Cord Blood ◽  
Pregnant Women ◽  
Newborn Infants ◽  
Antithyroid Drug ◽  
Clinical Indication ◽  
Antithyroid Drugs ◽  
Serum Thyroxine ◽  
Antithyroid Agents ◽  
Serum Tsh

Abstract. Eleven pregnant women with concomitant hyperthyroidism were treated with antithyroid drugs. At monthly intervals serum thyroxine (T4) and triiodothyronine (T3) were measured with radioimmunoassay, the Sephadex uptake of radioactive triiodothyronine (T3U) determined and the free T4 and T3 indices calculated (FT4I, FT3I). TSH-binding inhibiting immunoglobulins (TBII) were determined by the radiomembrane assay. Serum TSH and T4 were measured at delivery from cord blood and/or from the newborn infants some days after birth. Serum TSH was significantly elevated in one infant. There was an inadequate post-partal rise in serum T4 concentration in this child and in another who showed only a marginal elevation of TSH. The mothers of these infants were given carbimazole in doses of 30 and 25 mg/day, respectively, at the time of delivery. No significant changes were seen in other infants, the daily doses being 20 mg of carbimazole or less. There was no clinical indication of hypo- or hyperthyroidism in any of the newborn. The TBII were positive in most patients and there was a trend of normalization during treatment. No relationship between the dose of antithyroid drug and the level of TBII could be seen. During treatment the dose was adjusted according to the FT3I values. This seems to be an adequate laboratory test for this purpose.

LUMINESCENT DETERMINATION OF SUGAR IN NATURAL HONEY

2020 ◽  
Vol 0 (4) ◽  
pp. 29-32
Author(s):  
B.M. GAREEV ◽  
◽  
A.M. ABDRAKHMANOV ◽  
G.L. SHARIPOV ◽  
◽  
...  
Keyword(s):  
Quantum Dots ◽  
Laboratory Test ◽  
Aqueous Solutions ◽  
Analytical Method ◽  
Sugar Content ◽  
Carbon Quantum Dots ◽  
Photoluminescence Intensity ◽  
Sucrose Content ◽  
Natural Honey

The photoluminescence of carbon quantum dots synthesized from natural honey and mixtures of honey and sugar has been studied. An increase in the sugar content leads to a decrease in the photoluminescence intensity without changing the shape of the luminescence spectrum of these quantum dots aqueous solutions, which is associated with a decrease in the yield of their synthesis in the sugar presence. The discovered effect can be used to detect sugar in honey. When examining five different market samples of flower honey using this method, two of them showed a significant decrease in the photoluminescence intensity. A laboratory test for compliance with GOST 19792-2017 Standard requirements established an excess of the sucrose content in these samples. Luminescent determination of sugar in honey does not require complicated equipment and can be used to develop a new analytical method for determining the sugar content in counterfeit natural honey.

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