Degradation studies of pendimethalin by indigenous soil bacterium Pseudomonas strain PD1 using spectrophotometric scanning and FTIR

Author(s):  
Neha Trivedi ◽  
Ashutosh Dubey
2021 ◽  
Author(s):  
Novita Ayu Irawana Hulu ◽  
Perdinan Sinuhaji ◽  
Kerista Tarigan ◽  
Nisrina Harahap

2012 ◽  
Vol 1432 ◽  
Author(s):  
Ryan M. France ◽  
Myles A. Steiner

ABSTRACTInitial tests are performed regarding the degradation of lattice-mismatched GaInAs solar cells. 1eV metamorphic GaInAs solar cells with 1-2×106 cm-2 threading dislocation density in the active region are irradiated with an 808 nm laser for 2 weeks time under a variety of temperature and illumination conditions. All devices show a small degradation in Voc that is logarithmic with time. The absolute loss in performance after 2 weeks illuminated at 1300 suns equivalent and 125°C is 7 mV Voc and 0.2% efficiency, showing these devices to be relatively stable. The dark current increases with time and is analyzed with a two-diode model. A GaAs control cell degrades at the same rate, suggesting that the observed degradation mechanism is not related to the additional dislocations in the GaInAs devices.


1952 ◽  
Vol 194 (2) ◽  
pp. 775-783 ◽  
Author(s):  
T.P. Wang ◽  
J.O. Lampen
Keyword(s):  

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Dimal A. Shah ◽  
Ishita I. Gondalia ◽  
Vandana B. Patel ◽  
Ashok Mahajan ◽  
Usmangani Chhalotiya ◽  
...  

Abstract Background A sensitive, precise, and stability-indicating high-performance thin-layer chromatographic (HPTLC) method has been developed for the analysis of Remogliflozin etabonate in tablet formulation. HPTLC plates precoated with silica gel 60 F254 were used as the stationary phase; methanol: ethyl acetate: toluene: NH3 (2:4:4:0.1, v/v/v) was used as mobile phase, and densitometry was used for the quantitative estimation of the drug. The proposed method was validated with respect to linearity, accuracy, precision, and robustness and applied for the estimation of drug in tablet dosage form. Results The Rf value of Remogliflozin etabonate was observed to be 0.61. The densitometric estimation was performed in reflectance mode at 229 nm. The method was found to be linear in the range of 500–8000 ng/band for Remogliflozin etabonate. The possible degradation pathway was estimated by performing forced degradation studies. The degradant peaks were well resolved from the drug peak with acceptable resolution in their Rf value. Conclusion An accurate and precise high-performance thin-layer chromatographic method has been developed for the quantification of Remogliflozin etabonate in tablets. Forced degradation studies were performed, and drug was found to be highly susceptible to acid, base hydrolysis, and oxidative stress degradation and gets converted into active drug Remogliflozin. Both Remogliflozin etabonate and Remogliflozin bands were well resolved. The method was applied for the analysis of drug in tablet formulation, and it can be used for routine quality control analysis, as well as for the analysis of stability samples.


2021 ◽  
Vol 1 (7) ◽  
pp. 306-306
Author(s):  
Eva Sarkadi‐Priboczki ◽  
Mate Varga ◽  
Ivan Valastyan ◽  
Karoly Brezovcsik ◽  
Andras Fenyvesi ◽  
...  

2014 ◽  
Vol 53 (9) ◽  
pp. 3606-3611 ◽  
Author(s):  
Melissa E. Freiderich ◽  
Dean R. Peterman ◽  
John R. Klaehn ◽  
Philippe Marc ◽  
Lætitia H. Delmau

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