نتایج جستجو برای: corrosive effect
تعداد نتایج: 1644035 فیلتر نتایج به سال:
BACKGROUND In treating severe corrosive injury of the esophagus and stomach, prompt diagnosis, adequate fluid resuscitation and warranted surgical intervention are the most important factors in rescue of critically ill patients. The purpose of this study was to evaluate the need for, and the advantages of, a surgical approach to treatment of such corrosive injuries to the upper gastrointestinal...
moisture and air pollutions intensify metallic and nonmetallic surface corrosions. corroded surfaces exposed to rain washing cause pollution transportation in water and soil environment, especially in industrial areas. investigation of storm runoff quality in pars special economic energy zone (pseez) has shown heavy metals in storm basins of gas refineries and petrochemical industries.in this p...
Balloon Dilatation for Corrosive Esophageal Strictures in Children: Radiologic and Clinical Outcomes
OBJECTIVE We retrospectively evaluated the effectiveness of the esophageal balloon dilatation (EBD) in children with a corrosive esophageal stricture. MATERIALS AND METHODS The study subjects included 14 patients (M:F = 8:6, age range: 17-85 months) who underwent an EBD due to a corrosive esophageal stricture. The causative agents for the condition were glacial acetic acid (n = 9) and lye (n ...
Effects of nanoparticles (NPs) on skin corrosion and irritation using three-dimensional human skin models were investigated based on the test guidelines of Organization for Economic Co-operation and Development (OECD TG431 and TG439). EpiDermTM skin was incubated with NPs including those harboring iron (FeNPs), aluminum oxide (AlNPs), titanium oxide (TNPs), and silver (AgNPs) for a defined time...
AIM Keratoprosthesis (KPro) devices are prone to long-term corrosion and microbiological assault. The authors aimed to compare the inflammatory response and material dissolution properties of two candidate KPro skirt materials, hydroxyapatite (HA) and titania (TiO(2)) in a simulated in vitro cornea inflammation environment. METHODS Lipopolysaccharide-stimulated cytokine secretions were evalua...
certain gases, principally oxygen,o , and carbon dioxide, co , dissolved in water accelerate its corrosive properties. the rate of corrosion is approximately in prportion to the quantity of gas dissolved. the removal of gases from water, as practiced in steam station, is effected by mechanical and thermal treatment , by addition of chemicals, or by combinations of these processes, the most wide...
Five patients are described who had retrosternal pains following the consumption of CetiprinR tablets. The pains increased so markedly within a few days that, initially, solid foods and, subsequently liquid foods also were impossible to swallow. Typically the history was of the comsumption of a tablet in the evening or night without fluids and the pains lasted 2--3 weeks. A marked corrosive inj...
Existing theories describe corrosive wear in crosshead diesel engines in terms of acid condensation, when the temperature in the combustion space drops below the dew point. Here a theory is proposed which stresses the role of alkaline cylinder lubricants in protecting the metal surface. Calculated liner wear rates as a function of fuel sulphur content, feed rate and alkalinity of the oil, and a...
Introduction: Corrosive gastroesophagitis is one of the major problems in surgery and though multidiciplinary approach is used in these patients, prognosis of such patient is poor. In this retrospective study we selected patients with corrosive gastroesophagitis who had referred to Loqman hospital in the last decade and the results of treatment were analyzed. Methods: We analyzed patients with...
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