Acute death from caustic ingestion is uncommon. We report an autopsy case of acute fatality from suicidal ingestion of a liquid caustic soda solution with peritoneal leakage due to a stab wound to the stomach. The victim was a 58-year-old man, who died about 1 h after being transported to a hospital emergency care unit. There were corrosive erosions around the mouth and a stab wound in the lowe...

OBJECTIVE To report the authors' experience in extensive abdominal surgery after caustic ingestion, and to clarify its indications. SUMMARY BACKGROUND DATA After caustic ingestion, extension of corrosive injuries beyond the esophagus and stomach to the duodenum, jejunum, or adjacent abdominal organs is an uncommon but severe complication. The limit to which resection of the damaged organs can...

I investigate the caustics produced by the fall of collisionless dark matter in and out of a galaxy in the limit of negligible velocity dispersion. The outer caustics are spherical shells enveloping the galaxy. The inner caustics are rings. These are located near where the particles with the most angular momentum are at their distance of closest approach to the galactic center. The surface of a...

In this article, the problem of blur in a panoramic image from a catadioptric camera is analyzed through the determination of the virtual image. This determination is done first with an approximative method, and second through the caustic approach. This leads us to a general caustic approach of panoramic image analysis, where equations of virtual images are given. Finally, we give some direct a...

In this Letter, we propose a general real-space method for the generation of nonparaxial accelerating beams with arbitrary predefined convex trajectories. Our results lead to closed-form expressions for the required phase at the input plane. We present such closed-form results for a variety of caustic curves: beside circular, elliptic, and parabolic, we find for the first time general power-law...

In a previous paper (Marchand, 1954) the sociological aspects of caustic soda poisoning in Johannesburg were discussed. That review dealt with 116 cases treated during the four-year period July, 1948, to July, 1952. A second communication (Marchand, 1955) on acute caustic injuries was based upon five years' experience and a total of 152 cases. Between July, 1953, and July, 1954, a further 56 pa...

We consider a semi-classically scaled Schrödinger equation with WKB initial data. We prove that in the classical limit the corresponding Bohmian trajectories converge (locally in measure) to the classical trajectories before the appearance of the first caustic. In a second step we show that after caustic onset this convergence in general no longer holds. In addition, we provide numerical simula...

From a geometric perspective, the caustic is most classical description of wavefunction since its evolution governed by Hamilton-Jacobi equation. On other hand, according to Madelung-de Broglie-Bohm equations, solution Schr\"odinger equation given zeros Madelung-Bohm potential. In this work, we compare these descriptions and, analyzing how rays are organized over caustic, find that wavefunction...

The major objective of this work is to improve the pretreatments of brewer's spent grains (BSG) aiming at their use as a source for lignocellulosic yeast carriers (LCYC) production. Therefore, several pretreatments of BSG have been designed aiming at obtaining various yeast carriers, differing on their physicochemical composition. Cellulose, hemicellulose, lignin, fat, protein, and ash content ...

INTRODUCTION One of the leading causes of damage to the gastrointestinal tract in children is caustic ingestion which is sometimes life-threatening. The most reliable way to study the severity and extent of damage is endoscopy, which can be harmless in terms of time and technique. The aim of this study was to investigate, evaluate and compare clinical findings and endoscopic results of caustic ...