نتایج جستجو برای: corrosive effect

تعداد نتایج: 1644035  

This paper investigates the mixing of the graphene (GR) particles in the polyester (PE) resin by using two different dispersion techniques which are mechanical stirring and sonication method. This paper shows that the mixing method has a significant effect on the corrosive behavior of the coatings. Fourier Transform Infrared Spectroscopy (FT-IR) characterization technique is done to analyze...

Journal: :Journal of colloid and interface science 2004
José Bico Jérôme Vierling Aurélien Vigano David Quéré

When a fiber is brought into contact with a soft etching liquid, a conical tip is generally shaped. We show here that the use of corrosive liquids which release gases during the etching reaction may lead to original self-similar shapes, because of successive pinning and detachment of the meniscus. The conditions for the formation of this shape and its evolution are described. In particular, we ...

Journal: :Interactive cardiovascular and thoracic surgery 2012
Kelechi E Okonta Mark Tettey Umar Abubakar

A best evidence topic in cardiothoracic surgery was written according to a structured protocol. The question addressed was, 'is there an increased risk of cancer in a non-resected corrosive oesophageal stricture?' Altogether, 133 papers were found using the reported search; six papers were identified that provided the best evidence to answer the question. The authors, journal, date and country ...

Journal: :The Ceylon medical journal 2015
T Wijeratne C Ratnatunga A Dharrmapala T Samarasinghe

Ingestion of corrosives with accidental or suicidal intent is a common problem in Sri Lanka. Management options and outcomes of corrosive injuries on stomach are not well documented in our setting. The clinical presentation, complications and management outcomes of nine patients with corrosive injury to stomach are presented. Gastric outlet obstruction seen in majority, was managed with bypass ...

Journal: :Jornal de pediatria 2006
Paulo Fernando Souto Bittencourt Simone Diniz Carvalho Alexandre Rodrigues Ferreira Suzana Fonseca Oliveira Melo Denise Oliveira Andrade Paulo Pimenta Figueiredo Filho Walton Albuquerque Edivaldo Fraga Moreira Francisco José Penna

OBJECTIVE To assess the causes of esophageal stricture in pediatric patients and their response to endoscopic dilatation. METHODS Retrospective analysis of clinical and endoscopic data obtained from children and adolescents with esophageal stricture submitted to endoscopic dilatation between July 1993 and January 2003. RESULTS A total of 125 patients aged between 1 month and 16 years were i...

2016
Xuewu Li Tian Shi Cong Liu Qiaoxin Zhang Xingjiu Huang

Aluminum alloys are vulnerable to penetrating and peeling failures in seawater and preparing a barrier coating to isolate the substrate from corrosive medium is an effective anticorrosion method. Inspired by the lotus leaves effect, a wetting alloy surface with enhanced anticorrosion behavior has been prepared via etch, deposition, and low-surface-energy modification. Results indicate that exce...

1997
L. H. Espinoza T. M. Niemczyk B. R. Stallard M. J. Garcia

The generation of particles in gas handling systems as a result of corrosion is a major concern in the microelectronics industry. The corrosion can be caused by the presence of trace quantities of water in corrosive gases such as HCl or HBr. Presently there are several commercial instruments that are capable of detecting trace water vapor with detection limits as low as 50 ppb in N2. However, n...

2016
Huihui Yang Yanling Wang Xishu Wang Pan Pan Dawei Jia Filippo Berto

The effects of corrosive media on rotating bending fatigue lives (the cyclic numbers from 104 to 108) of different aluminum alloys were investigated, which involved the corrosion fatigue lives of five kinds of aluminum alloys in air, at 3.5 wt. % and 5.0 wt. % NaCl aqueous solutions. Experimental results indicate that corrosive media have different harmful influences on fatigue lives of differe...

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