نتایج جستجو برای: preformed particle gels

تعداد نتایج: 201024  

Journal: :Langmuir : the ACS journal of surfaces and colloids 2005
S Ramakrishnan V Gopalakrishnan C F Zukoski

We report on the microstructure and mechanical properties (elastic modulus) of concentrated depletion and thermal gels of octadecyl-coated silica particles for different values of the strength of interaction--polymer concentration for depletion gels and temperature for thermal gels. The depletion gels are composed of dense clusters and voids, while the thermal gels are devoid of clusters. Shear...

2013
Hisato MUROI Ruri HIDEMA Jin GONG Hidemitsu FURUKAWA

Gels are kinds of soft and wet materials, having many unique characteristics such as low friction, material permeability, and biocompatibility. In the last decade, the mechanical weakness of the gels has been overcome by the advent of novel high-strength gels, which promises to expand the industrial and medical applications of the soft and wet materials. Here an optical 3D printer was developed...

2017
O. CULFA G. J. TALLENTS M. E. KORKMAZ A. K. ROSSALL E. WAGENAARS C. P. RIDGERS C. D. MURPHY N. BOOTH D. C. CARROLL L. A. WILSON K. L. LANCASTER N. C. WOOLSEY

The energy spectra of protons generated by ultra-intense (10 W cm) laser interactions with a preformed plasma of scale length measured by shadowgraphy are presented. The effects of the preformed plasma on the proton beam temperature and the number of protons are evaluated. Two-dimensional EPOCH particle-in-cell code simulations of the proton spectra are found to be in agreement with measurement...

2006
Hans M. Wyss Elena V. Tervoort Ludwig J. Gauckler

It is often assumed that the viscoelastic properties of dense colloids are determined by the colloid volume fraction, the interaction potential, as well as the particle size distribution and shape. The dependence of the viscoelastic behavior of particle suspensions and gels on these parameters has been widely studied, and is well understood in many cases. In contrast, our knowledge on the influ...

Journal: :Molecular cell 1998
P Guo C Zhang C Chen K Garver M Trottier

Ds-DNA viruses package their DNA into a preformed protein shell (procapsid) during maturation. Bacteriophage phi29 requires an RNA (pRNA) to package its genomic DNA into the procapsid. We report here that the pRNA upper and lower loops are involved in RNA/RNA interactions. Mutation in only one loop results in inactive pRNAs. However, mixing of two, three and six inactive mutant pRNAs restores D...

Journal: :Pakistan journal of pharmaceutical sciences 2012
Abid Hussain Gul Majid Khan Shefaat Ullah Shah Kifayat Ullah Shah Nauman Rahim Abdul Wahab Asim-Ur Rehman

The aim of the study was to formulate and evaluate topically applied ketoprofen gels and patches and to see the effect of naturally occurring almond oil as penetration enhancer on the penetration of ketoprofen through artificial membrane/rabbit skin. Prior to ketoprofen gel and patch formulation, the particle size and particle size determination of ketoprofen was analyzed by Particle size analy...

Journal: :Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 2012

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