نتایج جستجو برای: preformed particle gels
تعداد نتایج: 201024 فیلتر نتایج به سال:
We report that glycerol changes the separation characteristics of polyacrylamide nucleoprotein gels in which it is included as a stabilizing agent. Polyacrylamide gel electrophoresis fractionates DNA and nucleosomes according to net negative charge, mass and conformation. With glycerol included, fractionation seems to be largely based on particle mass and charge. The conformation factor in sepa...
In this study, we demonstrate how the diffusion of probe particles in aqueous poly(vinyl alcohol) (PVA) solutions and gels is affected by: (i) the presence of cross-links, (ii) the cross-link density, (iii) the polymer concentration. We apply fluorescence correlation spectroscopy (FCS) to measure the diffusion time of a rhodamine-based fluorescent particle (TAMRA) and TAMRA-labeled dextran in P...
Abstract Silica nanoparticles (silica sols) based gels have increasingly been used as alternative grouting material for sealing the small fractures in tunnel walls. Gelling of silica at room temperature has investigated thoroughly but gelling different temperatures scarcely investigated. At same time is one major factor which can affect long-term stability grouted silica. In this work we three ...
Metal-based nanofillers are used as disperssants to enhance thermal conductivity for a minimal fuel requirement extract maximum energy. To achieve this, metal-based must be suspended uniformly into jet so that desired propulsive characteristics can achieved. However, the dispersion of is critical challenge due density and viscosity independent parameters with scattered relation. Hence, in curre...
Mucosa-adhesive gels can be used as a useful mean of delivering drugs to or via mucosal membranes, and in particular buccal mucosa. Carbomers are among the best mucosa-adhesive materials known. The aim of this study was to compare the results obtained from the mucosa-adhesive strength of aqueous gels containing Carbomers, either alone or in combination, to the data obtained from assessing the d...
This paper presents the simulation of fragmentation warhead using a hydrocode, Autodyn. The goal of this research is to determine the lethal range of such a warhead. This study investigates the lethal range of warheads with and without steel balls as preformed fragments. The results from the FE simulation, i.e. initial velocities and ejected spray angles of fragments, are further processed usin...
Soft particulate gels are composed of a small amount matter dispersed in continuous fluid phase. The solid components assemble to form porous matrix, providing rigidity and control the mechanical response, despite being minority constituent. rheological response gel elasticity direct functions particle volume fraction. However, diverse range different functional dependencies reported experiment...
A huge amount of evidence has been made available on various adjuvants as immunological auxiliaries. Very few of them, however, have made it into commercial vaccines. Their defining properties and uses are discussed in the following mini-review. WHAT IS AN ADJUVANT? In Freund's words [1] an adjuvant should “evoke very abundant serum antibody production sustained for an unexpectedly long time”. ...
The membrane (M1) protein of influenza virus was found to be heterogenous and to occur in two forms in the virus particle. The two forms of M1 were found in virus which was produced both early and late after infection and in infected cells. The two forms could be separated on polyacrylamide gels under specific conditions. The two components of M1 contained similar tryptic peptides. However, a s...
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