Blends of nylon-6 with polybutadiene were prepared with comparable morphology and different molecular weights of the matrix. These specimens were tested using the notched Izod impact test and the notched tensile impact test. An increase in molecular weight resulted in a shift of the brittle-to-tough transition temperature of 40°C to lower temperatures. In the notched tensile impact tests, espec...

a quantiatative structure property relationship (qspr) treatment was used to a data set consisting of diverse 3-hydroxypyridine-4-one derivatives to relate the logarithmic function of octanol:water partition coefficients (denoted by log p o/w )  with theoretical molecular descriptors. evaluation of a test set of 6 compounds with the developed partial least squares (pls) model revealed that this...

the objective of this study was to determine the protein pattern and antigenic structure of bhv-1. ten viral isolates from cows with clinical signs of respiratory infections were selected for this study and confirmed by sn test. all samples were cultured on cell cultures and purified by ultracentrifugation. purified isolates were electerophorsed using sds-page method and immunoblotted. viral an...

quantitative relationships between molecular structure of forty eight aldehyde compounds with their known cathepsin k inhibitory effects were discovered by partial least squares (pls) method. evaluation of a test set of 10 compounds with the developed pls model revealed that this model is reliable with a good predictability. since the qsar study was performed on the basis of theoretical descrip...

in this paper, the quantitative structure activity-relationship (qsar) of the ccr2b receptor inhibitors was scrutinized. firstly, the molecular descriptors were calculated using the dragon package. then, the stepwise multiple linear regressions (sw-mlr) and the genetic algorithm multiple linear regressions (ga-mlr) variable selection methods were subsequently employed to select and implement th...

quantitative structure-property relationship (qspr) for estimating the adsorption of aliphatic alcohols onto activated carbon were developed using substructural molecular fragments (smf) method. the adsorption capacity of activated carbon (gr/100grc) for 150 aliphatic alcohols onto activated carbon (ac) is studied under equilibrium conditions. forward and backwards stepwise regression variable ...

colorectal cancer is an emerging public health problem in indonesia and currently ranks among the three highest cancers. lack of a colonoscopy screening and lifestyle changes might contribute to it. in the last few decades, there is an increasing interest towards the contribution of genetic-environment interaction in colorectal carcinogenesis. some studies have indicated that crc might develop ...