Several methods to determine number-average molecular weight M n and weight-average molecular weight M w , of a polymer sample are proposed from diffusion and sedimentation velocity measurements at the point. According to these methods, M n and M w are determined from the diffusion constant vs....
All of the spinodals were calculated based on a model polydisperse polymer mixture, where each polymer contains three different molecular weight subcomponents. According to our calculations, the spinodal depends on both weight-average ((M) over bar (w)) and number-average ((M) over bar (n)...
This method involves a polymer sheet or film with a fixed weight on top. The polymer sample is dragged along a stainless steel sheet under dry or wet conditions and friction force is thus measured by a forcemeter (Figure 2.1). The normal force in this test is equal to the gravity force...
A sustained-release composition containing a lactic acid-glycolic acid polymer having a ratio or weight average molecular weight and number average molecular weight of about 1.90 or lower, or a salt thereof, and a physiologically active substance.Kazumichi Yamatomo...
+/- temperatureReview data analysis vs. average comparable mattress IN POPULAR RANKINGS Top 200 OverallNew Year's 2025 Updates: Sleep Number now offers their Climate360™ mattress, which provides active warming and cooling as well as their other smart bed features. Recent reviewers have mentioned...
High molecular weight chitosan (CS) (average molecular weight 310,000–375,000) and poly (ethylene oxide) powder (average molecular weight 300,000) materials were supplied by Sigma-Aldrich. For the preparation of the polymer blend based on chitosan: poly(ethylene oxide) [CS:PEO], 70 wt%...
When mixed into a polymer matrix even in small amounts, CB increases the mechanical strength and forms a conductive network which greatly increases the conductivity of the polymer plastic. Carbon black has also been used in dye sensitized solar cells, batteries and supercapacitors for energy storage...
(solid lines). Calibrations: 0.5 mV/5 ms.eContext dependent fear conditioning—displayed as % freezing in the trained context—comparing euploidvs. Brwd1+/–vs. Ts65Dnvs. Ts65Dn;Brwd1+/–mice. Data are presented as averages ± SEM. See Supplementary Information Materials for ...
(Li2S) depositions with different electrolytes are calculated based on the Bewick, Fleischmann, and Thirsk (BFT) instantaneous model. The provided data are the average values from the five independent chronoamperometry (CA) experiments. The error bars indicate the standard errors.Source dataare ...
The other major limitation of PCR, particularly in the context of mutation detection, is the rate of error incorporation. The thermostable DNA polymerase derived from Pyrococcus furiosus (Pfu) is reported to have the lowest average error rate. This enzyme makes an error (i.e., introduces a mut...