in this paper the dynamic of a droplet on a surface with a hole is investigated under gravitational effect by using lattice boltzmann method. incompressible two-phase flow with high density ratio proposed by lee is considered. cahn’s theory is used to observe the wettability of the surface in contact with liquid and gas phases. several parameters such as contact angle, surface tension and gravi...

1. Survival of cells without cell proliferation. 2. Cell multiplication without increase in protoplasmic matter, due to the presence of substances stimulating mitosis and the absence of the proper nutritive elements in the culture medium. 3. Proliferation of cells with new formation of protoplasmic matter through utilization of nutritive substances contained in t,he culture medium under conditi...

the aim of the present study was to investigate the influence of nozzle configurations on spray drift and explain the influences using several atomization characteristics (length of spray sheet, spray angle, velocity distribution of flow field, fluctuation of velocity, and droplet size). nozzles manufactured by one company (lechler gmbh, germany) were tested by spraying local tap water in a win...

A mutation (modD) was selected in a gene involved in the control of protoplasmic incompatibility. Previous results (Labarere and Bernet 1979) showed that modD decreased the density of protoperithecia and caused a defect in ascospore germination. In addition, modD has a third defect: when modD stationary cells were isolated in order to obtain further development, renewal of growth rarely ensued....

We have recently described "fracture-label" techniques that permit direct cytochemical labeling of freeze-fractured cells. We report here the use of fracture-labeling to investigate the distribution and partition of wheat germ agglutinin (WGA) receptor sites over the protoplasmic and exoplasmic plasma membrane faces of freeze-fractured human thymus-derived (T) lymphocytes. All exoplasmic faces ...

Listgarten, M. A. (Harvard School of Dental Medicine and Forsyth Dental Infirmary, Boston, Mass.), W. J. Loesche, and S. S. Socransky. Morphology of Treponema microdentium as revealed by electron microscopy of ultrathin sections. J. Bacteriol. 85:932-939. 1963.-Broth cultures of a strain of Treponema microdentium were harvested on Millipore filters, fixed in osmic acid, and sectioned for electr...