Stringently anaerobic bacteria have been successfully cultured in rubber-stoppered roll tubes. Stoppers of certain types of rubber are so permeable to oxygen that they are unsuitable (Hungate, J. Bacteriol. 86:848, 1963). Butyl rubber is less permeable to gases than are many other types. The permeabilities of butyl stoppers and a common laboratory type to gases concerned in anaerobic culture wo...

AIM To determine whether the following can be sterilized by autoclaving - endodontic sponges, rotary nickel-titanium (NiTi) instruments within endodontic sponges, and rotary NiTi instruments with rubber stoppers. METHODOLOGY Sixty-four samples of eight different endodontic sponges (n = 512) were placed into brain heart infusion broth (BHI) for 72 h. An aliquot of this was then spread onto hor...

The reduced canonical form of a loopfree game G is the simplest game infinitesimally close to G. Reduced canonical forms were introduced by Calistrate, and Grossman and Siegel provided an alternate proof of their existence. In this paper, we show that the Grossman–Siegel construction generalizes to find reduced canonical forms of certain loopy games.

Background & Aims Despite the growing recognition of duodenal alterations in pathophysiology functional dyspepsia (FD), effect and mechanism proton pump inhibitors (PPIs) or first-line therapy remain unclear. We studied systemic relation to PPI patients with FD healthy volunteers (HVs). Methods performed a prospective interventional study assessing symptoms (Patient Assessment Gastrointestinal ...

Skate-stoppers are ubiquitous objects installed on outdoor surfaces in built environments all over the world. an essential part of low-tech security urban at a micro-scale—a single bench, handrail, or ledge—with sole-purpose protecting these from skateboarders. As such skate-stoppers extension human and electronic surveillance systems, though many patches landscape, low-cost substitute for more...

Viaducts with roller bearings are subject to large displacement, which could lead the collapse of deck during earthquakes. This study attempts prevent displacements by installing steel stoppers at both sides bearings. The efficiency viscous damper stiffness on seismic performance curved viaducts combined use a spatial multipoint is evaluated. pounding phenomena exactly simulated, considering en...

A similarity between chemical reactions and self-assembly of nanoparticles offers a strategy that can enrich both the synthetic chemistry and the nanoscience fields. Synthetic methods should enable quantitative control of the structural characteristics of nanoparticle ensembles such as their aggregation number or directionality, whereas the capability to visualize and analyze emerging nanostruc...