نتایج جستجو برای: perforated surface

تعداد نتایج: 642226  

Journal: :Corrosion Science 2021

Corrosion of low alloy carbon steel in simulated crevices and a perforated envelope containing rod, mimicking the liner-overpack system, was assessed at 90 °C anoxic water-saturated clay. limited (< 1 ?m/year). The corroded surface exposed magnetite with fringe siderite. Internal corrosion heterogeneous due to gradual filling porewater, average depth for internal rod 11.5 ?m after 76 months. Ma...

Journal: :Applied sciences 2023

An experimental investigation of hydrodynamics gas-solid flow is carried out by engaging different designs air distributor plates. analysis three plates, i.e., perforated, 45° slotted and novel hybrid plate, revealed the difference in pressure drop minimum fluidization velocities (Umf) for varying input operational variables. Umf found to be lowest perforated highest whereas plate plate. The bu...

Journal: :The Journal of surgical research 2012
Mirelle E E Bröker Esther M M van Lieshout Maarten van der Elst Laurents P S Stassen Tim Schepers

BACKGROUND Several studies have been performed in order to diagnose an acute appendicitis using history taking and laboratory investigations. The aim of this study was to create a model for the identification of a perforated appendicitis. METHODS All consecutive patients who have undergone an appendectomy in the Reinier de Graaf hospital between January 1, 2007 and July 31, 2009, were include...

Journal: :Plastic and reconstructive surgery 1997
Rod J Rohrich Jeffrey E Janis William P Adams Jeffery K Krueger

A precise and reproducible lateral osteotomy is a requirement for successful rhinoplasty. Two basic techniques have evolved: the external perforated method and the internal continuous method. The literature supporting the external perforated technique maintains that it contributes to a controlled, stable fracture and produces less nasal airway narrowing, hemorrhage, edema, and ecchymosis; howev...

Journal: :Journal of pediatric surgery 2010
Steven L Lee Saleem Islam Laura D Cassidy Fizan Abdullah Marjorie J Arca

OBJECTIVE The aim of the study was to review evidence-based data regarding the use of antibiotics for the treatment of appendicitis in children. DATA SOURCE Data were obtained from PubMed, MEDLINE, and citation review. STUDY SELECTION We conducted a literature search using "appendicitis" combined with "antibiotics" with children as the target patient population. Studies were selected based ...

2014
Jong-In Lee Young-Taek Kim Sungwon Shin

This study presents wave height distribution in terms of stem wave evolution phenomena on partially perforated wall structures through three-dimensional laboratory experiments. The plain and partially perforated walls were tested to understand their effects on the stem wave evolution under the monochromatic and random wave cases with the various wave conditions, incident angle (from 10 to 40 de...

2011
David I Bruner Corey Gustafson

BACKGROUND Dyspnea and chest pain are common presenting complaints to the ED, and coupled together can present a challenging diagnostic dilemma in patients in extremis. A thoughtful evaluation is required, giving due diligence to the immediate life threats as well as multiple etiologies which can cause serious morbidity. A perforated peptic ulcer is one such possibility and requires rapid diagn...

2004
Michael V. Tirabassi David B. Tashjian Kevin P. Moriarty Stanley H. Konefal Richard A. Courtney Barry F. Sachs

OBJECTIVE The purpose of this study was to demonstrate the safety and efficacy of laparoscopy in children with perforated appendicitis. METHODS This is a retrospective review of consecutive patients under the age of 18, operated on for perforated appendicitis between September 1997 and December 1999. RESULTS Sixty-nine patients were operated on for perforated appendicitis. Eleven appendecto...

Journal: :Journal of Pediatric Surgery Case Reports 2018

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