Quality control and long‐term stability study of ginger from different geographical origins using chemometrics

2020 ◽  
Author(s):  
Mai T Abdo ◽  
Sherweit H El‐Ahmady ◽  
Haidy A Gad
Keyword(s):  
Quality Control ◽  
Stability Study ◽  
Term Stability ◽  
Long Term Stability

Preparation and Long-Term Stability Study of Steel Fiber/Graphite Conductive Concrete

2016 ◽  
Vol 680 ◽  
pp. 361-364 ◽  
Author(s):  
Jun Du ◽  
Cheng Tang ◽  
Bo Jia ◽  
De Zhang ◽  
Qiang Miao
Keyword(s):  
Corrosion Resistance ◽  
Steel Fiber ◽  
Stability Study ◽  
Soil Resistivity ◽  
Grounding Resistance ◽  
Term Stability ◽  
Long Term Stability ◽  
Conductive Fillers ◽  
The Common

The steel fiber/graphite conductive concrete is applied in power system grounding. In high soil resistivity regions, the common methods for reducing the grounding resistance are not practical. It is difficult for grounding resistance of substations to meet the requirements of working earthing and safety earthing. In order to solve this problem, a steel fiber/graphite conductive concrete is developed in this paper. Steel fiber and graphite are added as conductive fillers. The long-term stability of the steel fiber/graphite conductive concrete is studied. The experiment results show that steel fiber/graphite conductive concrete not only maintains excellent conductivity, but also has good mechanical strength and corrosion resistance in 300 days.

scholarly journals Long term stability study of triple GEM detector using different Argon based gas mixtures: an update

2020 ◽  
Vol 1498 ◽  
pp. 012037 ◽  
Author(s):  
S Chatterjee ◽  
S Roy ◽  
A Sen ◽  
S Chakraborty ◽  
S Biswas ◽  
...  
Keyword(s):  
Gas Mixtures ◽  
Stability Study ◽  
Term Stability ◽  
Long Term Stability ◽  
Gem Detector

Long-term stability study of drug products and out-of-specification test results

2011 ◽  
Vol 16 (12) ◽  
pp. 615-622 ◽  
Author(s):  
Ilya Kuselman ◽  
Ilana Schumacher ◽  
Francesca Pennecchi ◽  
Cathy Burns ◽  
Aleš Fajgelj ◽  
...  
Keyword(s):  
Stability Study ◽  
Test Results ◽  
Specification Test ◽  
Term Stability ◽  
Drug Products ◽  
Long Term Stability

Long-term stability of a stabilized liquid quality-control serum.

1981 ◽  
Vol 27 (8) ◽  
pp. 1448-1452 ◽  
Author(s):  
A E Hartmann ◽  
R D Juel ◽  
R N Barnett
Keyword(s):  
Quality Control ◽  
Linear Regression ◽  
Linear Regression Analysis ◽  
Linear Regression Coefficient ◽  
Term Stability ◽  
Long Term Stability ◽  
Control Serum ◽  
Quality Control Materials ◽  
Refrigerator Temperature

Abstract To evaluate the long-term stability of a new liquid quality-control serum ("Decision", Beckman Instruments, Inc.) stabilized with ethylene glycol (330 mL/L), we analyzed it for 22 commonly measured analytes during storage at 2--8 degrees C for 24 days or -15 to -20 degrees C for 55 weeks. Three separate laboratories replicated the analyses, using various analytical methodologies. The data were subjected to linear regression analysis, regressing concentration on time. Analytes were considered unstable when the linear regression coefficient was unequal to zero with 95% or greater probability in all three laboratories. By this criterion all of the analytes were stable for at least 24 days when the control serum was stored at refrigerator temperature and for at least 55 weeks at freezer temperature. We conclude this material is a satisfactory substitute for existing lyophilized quality-control materials and offers certain advantages: stability, vial-to-vial uniformity, decreased waste, and eliminated reconstitution.

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