منابع مشابه
Microbial contamination of gum-elastic bougies.
The gum elastic bougie is a simple device that is used to assist in the management of the difficult intubation. It is not uncommon for a bougie to be re-used many times. This study investigated the incidence of microbial contamination of the bougies in one hospital. Potentially pathogenic organisms were identified both on the bougies and in their storage containers. This has implications for th...
متن کاملCaustic Ingestions
Prevention has a main role in reducing the occurrence of corrosive ingestion especially in children, yet this goal is far from being reached in developing countries, where such injuries are largely unreported and their true prevalence simply cannot be extrapolated from random articles or personal experience. Because of the accidental nature of the ingestions, the case fatality rate for pediatri...
متن کاملCaustic Object Construction Based on Multiple Caustic Patterns
Inverse caustic problem, that is computing the geometry of a reflector and/or refractor based on a given caustic pattern, is currently not widely studied. In this paper, we propose a technique to solve the inverse caustic problem in which we compute the geometry of a semi-transparent homogeneous refractive object (caustic object) given a directional light source and a set of caustic patterns (e...
متن کاملCaustic ingestion.
Corrosive ingestion is a rare but potentially devastating event and, despite the availability of effective preventive public health strategies, injuries continue to occur. Most clinicians have limited personal experience and rely on guidelines; however, uncertainty persists about best clinical practice. Ingestions range from mild cases with no injury to severe cases with full thickness necrosis...
متن کاملZ - Pencils
The matrix pencil (A,B) = {tB −A | t ∈ C} is considered under the assumptions that A is entrywise nonnegative and B−A is a nonsingular M-matrix. As t varies in [0, 1], the Zmatrices tB−A are partitioned into the sets Ls introduced by Fiedler and Markham. As no combinatorial structure of B is assumed here, this partition generalizes some of their work where B = I. Based on the union of the direc...
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ژورنال
عنوان ژورنال: The Boston Medical and Surgical Journal
سال: 1879
ISSN: 0096-6762,1533-4406
DOI: 10.1056/nejm187904171001615