Now showing items 1-10 of 442
Impurities and forced degradation studies: A review
The safety of pharmaceuticals is dependent not only on the intrinsic toxicological properties of the active ingredient, but also on the impurities and degradation products that it may contain. The presence of impurities ...
A Multivariate curve resolution approach to the study of the degradation kinetics of valsartan under photolytic and acid conditions
The analysis of UV-spectrophotometric data with second-order chemometrics techniques, including multivariate curve resolution with alternating least-squares (MCR-ALS) and hybrid hard- and soft MCR (HS-MCR), was examined ...
The role of chain scission and chain branching in high density polyethylene during thermo-mechanical degradation
(Elsevier B.V., 2004-12-01)
The mechanical and thermo-oxidative degradation of high density polyethylene (HDPE) was measured in a twin-screw extruder using various processing conditions. Two types of HDPE, Phillips and Ziegler-Natta, having different ...
Degradation of soluble amyloid beta-peptides 1-40, 1-42, and the Dutch variant 1-40Q by insulin degrading enzyme from Alzheimer disease and control brains.
(Springer/Plenum Publishers, 2000-12)
Insulin degrading enzyme (IDE) is a metalloprotease that has been involved in amyloid beta peptide (A(beta)) degradation in the brain. We analyzed the ability of human brain soluble fraction to degrade A(beta) analogs 1-40, ...
Impact of different nanoparticles on the thermal degradation kinetics of phenolic resin nanocomposites
The effect of different contents of nano-fillers: carbon black (CB), bentonites (original (Bent) and modified with phosphonium salt (B-TBHP)) and commercial modified montmorillonite (C30B) on the thermal degradation of ...
Tropical forest light regimes in a human-modified landscape
Light is the key energy input for all vegetated systems. Forest light regimes are complex, with the vertical pattern of light within canopies influenced by forest structure. Human disturbances in tropical forests impact ...
Study of thermodegradation and thermostabilization of poly(lactide acid) using subsequent extrusion cycles
The thermomechanical degradation and thermostabilization of poly(lactic acid) (PLA) have been studied using subsequent extrusion cycles under different temperature profiles. Primary and secondary antioxidants were used to ...
Influence of Exogenous Enzymes on In Vitro Ruminal Degradation of Ensiled Rice Straw with DDGS
(Animal Nutrition and Feed Technology, 2017)
Profiles of alkali concentration and galactoglucomannan degradation in kraft impregnation of Scots pine wood: Experimental observations and modeling
(De Gruyter, 2015-02)
A deep understanding of alkali impregnation including the profiles of alkali concentration and hemicellulose degradation is necessary to analyze the optimization of current and innovative processes. In this paper, the ...
Isolation and characterization of indigenous 2,4-D herbicide degrading bacteria from an agricultural soil in proximity of Sauce Grande River, Argentina
(Springer Verlag Berlín, 2014-09)
Our objective was to isolate and characterize indigenous bacteria able to use 2,4-D as a sole carbon (C) and energy source from an agricultural soil in the Sauce Grande River basin (Argentina). Culturable-dependant and ...