In many systems, the liquid flows in discrete rivulet/droplet form rather than continuous non-wetting or low flow rate conditions. A (DLF) theory has been used by a few researchers to describe these systems such as Ironmaking blast furnace. investigators have applied of structured packing where particles are arranged particular pattern void size and shape fixed. However, real world, system is r...

Studying the fiber positioning in yarn structure is essential point to understand different characteristics of yarns that counted as alternatives each other. This study explores packing densities single-ply, two-ply and Siro-spun spun have been stated alternative types considering production method or structure. In study, Modal, Tencel, polyethylene teraphtalete, cotton fibers represent micro, ...

Six different types of 5 S rRNA crystals were obtained using the specimen purified from highly thermophilic bacteria, Thermus thermophilus HB8. The best crystal available diffracts X-rays up to 13A Bragg spacing. One type of crystals was sufficiently thin to be subjected to electron microscopy. Optically filtered images of two different projections exhibit molecular regions distinctly from the ...

We present the first systematic algorithm to estimate the maximum packing density of spheres when the grain sizes are drawn from an arbitrary size distribution. With an Apollonian filling rule, we implement our technique for disks in 2d and spheres in 3d. As expected, the densest packing is achieved with power-law size distributions. We also test the method on homogeneous and on empirical real ...

The title compound, C26H42N4O2S2, adopts a shallow U-shape as both pendant arms of the 1,3-substituted benzene ring are orientated in the same direction. The thione S atoms lie to the same side of the benzene ring and the carbonyl O atoms to the other. The most prominent feature of the crystal packing is the formation of inversion dimers mediated by N-H⋯S hydrogen bonds. One of the 2-methyl-pro...

The new ditopic heteroscorpionate ligand, (3-methoxy-4-hydroxyphenyl)bis(3,5-dimethylpyrazolyl)methane (L5v), and four coordination polymers of silver Ag(i) derived therefrom, have been synthesized and characterized by X-ray diffraction, ESI-MS, IR spectroscopy and elemental analysis. The presence of different anions (i.e. BF4-, CF3SO3-, NO3-, or SbF6-) lead to different crystal packing schemes...

The microscopic equilibrium structures of adsorbed films of quaternary ammonium surfactants on mica have been investigated by noncontact atomic force microscopy imaging as a function of alkyl chain length and headgroup structure. Spherical and cylindrical surface micelles were observed; these were found to be related to bulk solution self-assembly and the surfactant packing parameter, v/a0lc. S...

We study the packing fraction of clusters in free-falling streams spherical and irregularly shaped particles using flash X-ray radiography. The estimated is low enough to correspond coordination numbers less than 6. Such numerical simulations aggregates that collide grow without bouncing. Moreover, irregular evolved faster formed larger sizes with lower fraction. This result on granular suggest...

o b je c t i v e : to explore the pros and cons of early versus delayed intervention when dealing with severe blunt liver injury with significant hemoperitoneum and hemodynamic instability. m e t h o d s : this retrospective cross-sectional study was performed at the nemazi hospital, shiraz, southern iran, level i trauma center affiliated with shiraz university of medical sciences. the study po...