Background/Objective: The aim of this study was to perform a comparative evaluation of the yields of conventional brush cytology and brush cytology with negative pressure in the diagnosis of malignant biliary strictures. Methods: A total of 132 consecutive patients undergoing endoscopic were identified. Of these, 88.0 had brush cytology after ERCP and 44 were Brush cytology with negative pressu...

The present study aims at discussing the potential advantages of multiple unit dosage forms (pellets etc.) over the single unit dosage forms (tablets). Pelletization is a novel drug delivery system; a technique which converts fine powder particles into pellets. Review deals with the pellet and its various types of pelletization techniques like spheronization and extrusion, pelletization by laye...

Defects in the layering of Langmuir-Blodgett (LB) films can be eliminated by depositing from the appropriate monolayer phase at the air-water interface. LB films deposited from the hexagonal phase of cadmium arachidate (CdA2) at pH 7 spontaneously transform into the bulk soap structure, a centrosymmetric bilayer with an orthorhombic herringbone packing. A large wavelength folding mechanism acce...

Interactions between tethered layers composed of aggrecan (charged bottle-brush) macromolecules are responsible for the molecular origin of cartilage biomechanical behavior. To elucidate the role of the electrostatic forces in interaction between bottle-brush layers, we have performed molecular dynamics simulations of charged and neutral bottle-brush macromolecules tethered to substrates. In th...

The walls of the Louvre are covered with artistic masterpieces, widely recognized as some of the most treasured, creative works known to man. The unique stroke of a brush or the layering of paint can distinguish these geniuses from the masses. Despite the ability to label these pieces of art as especially creative, it remains unclear how one can truly qualify the defining characteristics of cre...

OBJECTIVE To evaluate and compare the efficacy of an oscillating-rotating (O-R) power toothbrush with a brush head utilizing angled bristles to a marketed sonic toothbrush in the reduction of plaque and gingivitis over an eight-week period. METHODS This study used a randomized, examiner-blind, single-center, two-treatment, parallel group, eight-week design. Subjects with mild-to-moderate plaq...

This article presents an overview of the notion of layering in three types of structuralfunctional grammars. Layering is interpreted in a broad sense to refer to two types of linguistic differentiations: (1) on the one hand, a distinction between levels of coding, namely, syntax/grammar, semantics, pragmatics; (2) on the other hand, a differentiation between speaker-related vs. content-related ...

For video broadcasting applications in a wireless environment, layered transmission is an effective approach to support heterogeneous receivers with varying bandwidth requirements. There are several important issues that need to be addressed for such layered video broadcasting systems. At the session level, it is not clear how to allocate bandwidth resources among competing video sessions. For ...

Superposition is a powerful program modularization and structuring method for developing parallel and distributed systems by adding new functionality to an algorithm while preserving the original computation The superposition method will thus structure the distributed algorithm in a number of mechanisms on top of the original computation In this paper the derivation using the super position met...

Digital provenance describes the ancestry or history of a digital object. Most existing provenance systems, however, operate at only one level of abstraction: the system call layer, a workflow specification, or the high-level constructs of a particular application. The provenance collectable in each of these layers is different, and all of it can be important. Single-layer systems fail to accou...