By using the two-step activated swelling method, monodisperse porous poly(styrene-divinylbenzene) (P(S-DVB)) microparticles were successfully synthesized. The influence of porogens, swelling temperatures and crosslinking agents on the porosity of porous microparticles was carefully investigated. Porous P(S-DVB) microparticles were used as a packing material for high performance liquid chromatog...

In this paper, the effects of two different Particle Size Distributions (PSD) on packingbehavior of ideal rigid spherical nanoparticles using a novel packing model based on parallelalgorithms have been reported. A mersenne twister algorithm was used to generate pseudorandomnumbers for the particles initial coordinates. Also, for this purpose a nanosized tetragonal confinedcontainer with a squar...

In interfacing man-made electronic components with specifically folded biomacromolecules, the perturbative effects of junction structure on any signal generated should be considered. We report herein on the electron-transfer characteristics of the blue copper metalloprotein, azurin, as characterized at a refined level by conducting atomic force microscopy (C-AFM). Specifically, the modulation o...

OBJECTIVE To assess the value of magnetic resonance cholangiography with gadobenate dimeglumine (Gd-BOPTA) where there is a suspicion of bile leakage in the post-liver transplant patient. PATIENTS AND METHODS Eight patients who had undergone a liver transplant underwent 14 MR cholangiograms, five of whom presented bile leakage while the other three had no biliary system complications. The res...

A 45-year-old man was admitted for pain in the upper right abdominal quadrant that had been evolving for months. His previous medical history was unremarkable. The physical examination showed a painful and tense abdomen in the right hypochondrium but the rest was pain free. Biological analysis showed an inflammatory syndrome (C-reactive protein 29.54mg/L). Liver enzymology and urine and blood c...

An 18-year-old womanwith superficial spreadingmelanoma in the epigastric region arising from a congenital nevus (Clark level III, Breslow thickness 3.56mm, mitotic rate 2mitoses/mm2), previously removed, was referred for a sentinel lymph node biopsy. After intradermal injection of 111MBq of 99mTc-nanocolloid (Nanocoll) around the excisional biopsy scar, lymphatic mapping was initiated. Dynamic ...

In textile industry, marker planning is one of the main operations in the cutting fabric stage. Marker packing is usually used to maximize cloth exploitation and minimize its waste. In this research, a method is used based on new found meta-heuristic imperialist competitive algorithm (ICA) and Bottom-Left-Fill Algorithm (BLF) to achieve optimal marker packing. Function of the proposed method wa...

We present a new lemma stating that, given an arbitrary packing of a set of rectangles into a larger rectangle, a “structured” packing of nearly the same set of rectangles exists. This lemma has several implications on the approximability of 2-dimensional packing problems. In this paper, we use it to show the existence of a polynomial-time approximation scheme for 2-dimensional geometric knapsa...

In this work, we investigated a modification of copolymer based on α-olefin (octadecene-1) (ODC) and maleic anhydride (MA) synthesized by the method initiated radical polymerization. studies carried out, it was revealed that all copolymers anhydride, with α-octadecene most effective in reducing viscosity oil TPT. octadecene-1 (ODC – MA) modified primary amines butylamine (BA), hexylamine (HA), ...