In this paper, the effect of silver nanoparticles on optical properties of (PVA-PAA) nanocomposites has been investigated. The silver nanoparticles were added to the polymers (polyvinyl alcohol 80 wt.% and poly-acrylic acid 20 wr.%) with weight percentages of (0, 2, 4, 6) wt.%. The optical properties of nanocomposites were measured in the wavelength range (200-800) nm. The experimental results ...

Although mixed-integer evolution strategies (MIES) have been successfully applied to optimization of mixed-integer problems, they may encounter challenges when fitness evaluations are time consuming. In this paper, we propose to use a radial-basis-function network (RBFN) trained based on the rank correlation coefficient distance metric to assist MIES. For the distance metric of the RBFN, we mod...

A chymotryps in l ike endopeptidase has been purif ied by ion-exchange chromatography, affinity chromatography, and gel f i l tration. The enzyme preparation is homogeneous in the u l t r a centrifuge and disc electrophoresis. The enzyme is proved to be free f rom any other proteolytic activities. The molecular weight of the proteinase as determined w i t h several techniques (ultracentrifugati...

The molecular weights of milk-fat-globule-membrane proteins solubilized in sodium dodecyl sulphate were estimated by gradient gel electrophoresis. Standard curves were calibrated from both protein and glycoprotein markers of known molecular weight. Six major proteins were observed with Coomassie Blue staining and six with periodic acid-Schiff staining. The behaviour of the membrane proteins and...

There are a variety of risks because of many factors’ influences in the process of logistics outsourcing. The logistics outsourcing risks are taken as the objects of study, based on rough sets model, the initial decision table is made reduction using Johnson Reducer algorithm, the weight coefficient of each risk index is determined by calculating the importance of attributes in the decision tab...

Intra-pair similarity of some somatological traits was analysed about 59 male and 69 female Japanese monozygotic twin-pairs aged between 12.25 and 13.25 years in terms of intraclass correlation coefficient (r') as well as Coefficient of Similarity (CS). Among 28 anthropometric measurements, the stature, body weight and iliospinal height consist of the highest similarity group, while skinfold th...

1. The effects of changes in experimental conditions on the mobility of RNA in polyacrylamide-gel electrophoresis were investigated. 2. The linear relation between log(molecular weight) and electrophoretic mobility was shown to be independent within limits of salt or gel concentration. 3. The relative mobility of RNA with low content of guanylic acid and cytidylic acid residues was decreased in...

Methods: As the Multicenter ACL (anterior cruciate ligament) Revision Study (MARS) Group, we conducted a multicenter, prospective longitudinal cohort study of patients undergoing revision surgery after anterior cruciate ligament reconstruction. We followed 632 patients who underwent radiographic evaluation of the knee (an anteroposterior weight-bearing radiograph, a posteroanterior weight-beari...