Crystallization-driven self-assembly (CDSA) was employed for the preparation of monodisperse cationic cylindrical nanoparticles with controllable sizes, which were subsequently explored their effect on antibacterial activity and mechanical properties nanocomposite hydrogels. Poly(ɛ-caprolactone)-block-poly(methyl methacrylate)-block-poly[2-(tert-butylamino) ethyl methacrylate] (PCL-b-PMMA-b-PTA...

Nanocomposite films of metal nitrides such as TiN/Si3N4, TiN/BN, and CrN/AlN have attracted substantial attention as coating materials for improving hardness and saving rare metals. It is difficult to prepare composite films consisting of nitride and oxide by conventional reactive sputtering methods. Nose et al. developed a differential pumping cosputtering (DPCS) system, which can fabricate di...

We report a new periodic structure of the cylinder packing. All the cylinders are congruent and the length of the cylinders are infinite and their directions are restricted to only six directions of 〈110〉. Each cylinder is fixed by cylinders of other directions, so that the whole structure sustains mechanical stability. The packing density equals to

OBJECTIVE To compare oxygen supply options for health facilities in the Gambia and develop a decision-making algorithm for choosing oxygen delivery systems in Africa and the rest of the developing world. METHODS Oxygen cylinders and concentrators were compared in terms of functionality and cost. Interviews with key informants using locally developed and adapted WHO instruments, operational as...

Electromagnetic wave scattering by many parallel infinite cylinders is studied asymptotically as a → 0. Here a is the radius of the cylinders. It is assumed that the points x̂m are distributed so that N (∆) = 1 a R ∆ N(x)dx[1+o(1)], whereN (∆) is the number of points x̂m = (xm1, xm2) in an arbitrary open subset of the plane xoy, the axes of the cylinders are passing through points x̂m, these axes ...

: This paper gives a comprehensive overview and understanding related with mixed convection in cylinders. About onehundred papers which are published in different local and international journals and conferences started from the past decade until the recent years are collected and described in various sections to give both researchers and readers a good overview and a solid background about mix...

cylinders utilising elastic materials of cylindrical anisotropy. The formulation is based on linear three dimensional elasticity using an analytic form for the displacement field. A similar formulation has been used in the study of waves in plates and more recently, by the authors, in homogeneous cylinders. We have now developed the necessary formulas to apply it to cylinders in which the inhom...

We define and study the Magnus representation for homology cylinders generalizing the work of Kirk, Livingston and Wang [KLW] which treats the case of string links. Using this, we give a factorization formula of Alexander polynomials for three dimensional manifolds obtained by closing homology cylinders. We also show a relationship between the Gassner representation for string links and the Mag...

A dual nanocomposite hydrogel with inorganic hybrid crosslinking was fabricated through a simultaneous sol-gel technique and free radical polymerization. Due to the multi-strengthening mechanism of the dual nanocomposite, the hydrogel was super tough and strong with a compressive stress of 32.00 MPa without rupture even at 100% strain, while it exhibited excellent fatigue resistant properties.

Fe(3)O(4):PVP/Au nanocomposite synthesized via a two-step procedure was tested as a quasi-homogenous alcohol oxidation catalyst. It was found that the nanocomposite was able to carry out aerobic oxidation of alcohols in water at room temperature. Studies show rapid magnetic recoverability and reusability characteristics.