Abstract Lithium-sulfur (Li-S) batteries can provide far higher energy density than currently commercialized lithium ion batteries, but challenges remain before it they are used in practice. One of the is shuttle effect that originates from soluble intermediates, like polysulfides. To address this issue, we report a novel laminar composite, N,O-carboxymethyl chitosan-reduced graphene oxide (CC-...

Given an n-vertex weighted planar graph G, a separator is a subset S of vertices such that each component of G S has at most two-thirds of the original weight. We give an algorithm nding a separator while balancing these two parameters of G[S]: the number of components, and the cost of a minimum spanning forest. In particular, given uniform edge costs and a positive integer k pn, we nd a separa...

We introduce the concept of multi-directional width-bounded geometric separators and obtain an improved separator for grid graphs. This yields an improved exact algorithm for the protein folding problem in the HP-model. For a grid graph G with n grid points P , there exists a separator A ⊆ P such that A has at most 1.02074 √ n points, and G−A has two disconnected subgraphs each with at most 2 3...

grammar ThreeFieldGrammar; structure { start: field1 & separator & field2 & separator & field3 & "\n"; separator: "-"; abstract field1; abstract field2; abstract field3; } An abstract grammar captures an incomplete specification. A non-terminal node must be declared abstract if it does not have a corresponding RHS. A grammar that has at least one abstract node must be declared abstract. A deriv...

A separator for two languages is a third language containing the first one and disjoint from the second one. We investigate the following decision problem: given two regular input languages, decide whether there exists a locally testable (resp. a locally threshold testable) separator. In both cases, we design a decision procedure based on the occurrence of special patterns in automata accepting...

OBJECTIVE to compare intraperitoneal adhesion formation in rats when using polypropylene and polypropylene with poliglecaprone meshes. METHODS we used twenty male, Wistar rats, divided in two groups. In group 1, the rats received the polypropylene mesh on their right side and the polypropylene with poliglecaprone mesh on their left side. In group 2 the position of the meshes was inverted. Aft...

BACKGROUND Hernia correction is a routinely performed treatment in surgical practice. The improvement of the operative technique and available materials certainly has been a great benefit to the quality of surgical results. The insertion of prostheses for hernia correction is well-founded in the literature, and has become the standard of treatment when this type of disease is discussed. AIM T...

OBJECTIVE To examine any association between polypropylene mesh used in midurethral slings and malignancy in humans. Macroporous, monofilament polypropylene midurethral slings have been established as a safe and effective treatment for stress urinary incontinence. However, despite long-term studies supporting the efficacy and safety of midurethral slings, there have been concerns regarding the ...

Since the maximum foaming temperature window is only about 4 °C for supercritical CO₂ (scCO₂) foaming of pristine polypropylene, it is important to raise the melt strength of polypropylene in order to more easily achieve scCO₂ foaming. In this work, radiation cross-linked isotactic polypropylene, assisted by the addition of a polyfunctional monomer (triallylisocyanurate, TAIC), was employed in ...

BACKGROUND This study aims to evaluate and compare the effect of pre-procedural administration of acetaminophen, ibuprofen, and meloxicam in reducing pain after separator placement. METHODS Three hundred twenty-one patients who needed orthodontic treatment and aged above 15 were randomly assigned to one of the three study groups: group A: 650 mg acetaminophen, group B: 400 mg ibuprofen, and g...