نتایج جستجو برای: suspensions

تعداد نتایج: 14894  

Journal: :Journal of cell science 1980
R Kibler J Blaschke E Forche K H Neumann

Using haploid and diploid Datura innoxia Mill, callus cultures and cell suspensions it was shown that meristematic material usually attains the lowest possible C-value of a given ploidy level. Parenchyma material of callus cultures, however, indicates a broad scattering of C-values up to 16 C, which is paralleled by C-value distribution of the free cell fraction in actively dividing cell suspen...

Journal: :Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics 1999
E Overbeck C Sinn M Watzlawek

Theoretical calculations for colloidal charge-stabilized suspensions and hard-sphere suspensions show that hydrodynamic interactions yield a qualitatively different particle concentration dependence of the short-time self-diffusion coefficient. The effect, however, is numerically small and hardly accessible by conventional light-scattering experiments. By applying multiple-scattering decorrelat...

Journal: :Infection and immunity 1972
H Y Whang H Mayer G Schmidt E Neter

Enterobacteriaceae share a common antigen (CA). This antigen exists as a powerful immunogen, when produced by Escherichia coli O14, and as a minimally effective immunogen, when present in cultures of most other smooth strains. The present study was directed toward the assessment of immunogenicity of this antigen produced by various rough mutants and their parent strains as well as that of viabl...

Journal: :The Canadian journal of hospital pharmacy 2013
Mary H H Ensom Jennifer Kendrick Susan Rudolph Diane Decarie

BACKGROUND Propranolol is a drug of choice for many diseases occurring in neonates and infants, an age group for which oral suspensions are required almost exclusively. Many adult and elderly patients for whom propranolol is prescribed are also unable to swallow solid dosage forms. In Canada, propranolol is not commercially available in a liquid dosage form, and existing recipes for extemporane...

2005
Emilio J. Tozzi Daniel J. Klingenberg C. Tim Scott Pasi Miettinen

Understanding the behavior of flexible fiber suspensions is challenging because of the many variables that affect macroscopic properties (such as fiber length, concentration, shape, flexibility, interactions, etc.), and the difficulty of systematically varying the system variables in experimental studies. In this report, we show how fiber-level simulations can be used to systematically investig...

2005
LORD ROTHSCHILD

Since Gray showed in 1928 that dilute suspensions of sea-urchin spermatozoa respire at a higher rate, per spermatozoon, than dense suspensions, evidence has been accumulating which suggests that sea-urchin spermatozoa are in different physiological conditions in suspensions of different densities. This paper is concerned with these differences and, in particular, with the effects of rigorous pH...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2010
Christel Hohenegger Michael J Shelley

We study theoretically the stability of "active suspensions," modeled here as a Stokesian fluid in which are suspended motile particles. The basis of our study is a kinetic model recently posed by Saintillan and Shelley [D. Saintillan and M. J. Shelley, Phys. Rev. Lett. 100, 178103 (2008); D. Saintillan and M. J. Shelley, Phys. Fluids 20, 123304 (2008)] where the motile particles are either "pu...

2017
Dorina-Elena Coricovac Elena-Alina Moacă Iulia Pinzaru Cosmin Cîtu Codruta Soica Ciprian-Valentin Mihali Cornelia Păcurariu Victor A. Tutelyan Aristidis Tsatsakis Cristina-Adriana Dehelean

The use of magnetic iron oxide nanoparticles in biomedicine has evolved intensely in the recent years due to the multiple applications of these nanomaterials, mainly in domains like cancer. The aim of the present study was: (i) to develop biocompatible colloidal suspensions based on magnetic iron oxide nanoparticles as future theranostic tools for skin pathology and (ii) to test their effects i...

BAHROLOLOOM M.E., , ESTILI M., , PAYDAR M.H., ,

Dispersion and rheological behaviors of ionically stabilized aqueous alpha alumina suspensions were investigated in various pH values (3, 11) and solid volume fractions (4, 7, 10, 15) Vol% using sedimentation experiment as well as viscosity measurement. Interface separating porous-packed sediment from a relatively clear supernatant at pH 11 was measured over 20 hours with the aim of obtaining l...

Journal: :iranian journal of pharmaceutical research 0
seyed mahdi hejazi department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, ir iran. mohammad erfan department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, ir iran. seyed alireza mortazavi department of pharmaceutics, school of pharmacy, shahid beheshti university of medical sciences, tehran, ir iran.

in this work attempts were made to evaluate k+-sds and hydrocolloid polymer-sds interactions in flocculation of megestrol acetate dispersions to enhancetheir stability as a part of suspension formulation. different dispersions of micronized megestrol acetate and sds were prepared. kcl and kh2po4 and their corresponding sodium salts were added to the dispersions and the preparations were evaluat...

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