نتایج جستجو برای: refractory corrosion

تعداد نتایج: 89067  

2013
R. T. Pabalan L. Yang K.-T. Chiang

Borated water leakage through spent fuel pools (SFPs) at pressurized water reactors is a concern because it could cause corrosion of reinforcement steel in the concrete structure and compromise the integrity of the structure. Because corrosion rate of carbon steel in concrete in the presence of boric acid is lacking in published literature and available data are equivocal on the effect of boric...

Journal: :Environmental science. Processes & impacts 2014
Huifang Sun Baoyou Shi Darren A Lytle Yaohui Bai Dongsheng Wang

To understand the formation and release behavior of iron corrosion products in a drinking water distribution system, annular reactors (ARs) were used to investigate the development processes of corrosion products and biofilm community as well as the concomitant iron release behavior. Results showed that the formation and transformation of corrosion products and bacterial community are closely r...

1998
J. J. Beaudoin

Corrosion of steel reinforcement is a major factor in the deterioration of highway and bridge infrastructure. A survey of the condition of a reinforced concrete structure is the first step towards its rehabilitation. A rapid, cost-effective and non-destructive condition survey offers key information on the evaluation of corrosion, and aids in the quality assurance of concrete repair and rehabil...

2014
Matthew J. Whitfield David Bono Lei Wei Krystyn J. Van Vliet

Harsh conditions ranging from those of biomedical implants to industrial oilfield applications prompt rapid assessment of whether and to what extent corrosion will occur. Here, we describe and demonstrate a novel high-throughput approach to quantify corrosion susceptibility based upon electrical resistance and colorimetric outputs. We illustrate this capability by quantifying aerobic corrosion ...

Journal: :iranian journal of child neurology 0
farhad mahvelati-shamsabadi assistant professor of pediatric neurology, pediatric neurology research center, shahid beheshti university of medical sciences, tehran, iran mohammad ghofrani professor of pediatric neurology pediatric neurology research center, shahid beheshti university of medical sciences, tehran, iran mohammad mehdi nasehi assistant professor of pediatric, mazandarn university of medical sciences, sari, iran eznallah azarghashb assistant professor of statistic,shahid beheshti university of medical sciences, tehran, iran

objective neuropsychological impairment is an important co-morbidity of chronic epilepsy. the aim of this study was to determine the state of the cognitive and motor development of patients with refractory epilepsy. materials & methods  we studied 150 consecutive children with epilepsy who were referred to mofid children hospital, a third level public referral university hospital in tehran, ira...

Journal: :iranian journal of child neurology 0
f. ashrafzadeh md professor of pediatric neurology,mashhad university of medical sciences h. rakhshandeh md mashhad university of medical sciences e. mahmodi md professor of pediatric neurology,mashhad university of medical sciences

objective several investigations have demonstrated that rosa damascena has an inhibitory effect on the hypothalamus and on pituitary system reactivity in the rat; it has also been shown that the essential oil of rosa damascena has significant antiepileptic effects on pentylentetrazole (ptz) induced seizures in rats. we aimed at assessing the effects of the essential oil of rosa damascena when u...

2014
Sanjeev Kumar Verma Sudhir Singh Bhadauria Saleem Akhtar

Corrosion of steel bars embedded in reinforced concrete (RC) structures reduces the service life and durability of structures causing early failure of structure, which costs significantly for inspection and maintenance of deteriorating structures. Hence, monitoring of reinforcement corrosion is of significant importance for preventing premature failure of structures. This paper attempts to pres...

2000
Fushuang Cui A. A. Sagüés Rodney G. Powers

Stainless steel clad rebar (SCR) was investigated because it may become a cost-effective means of controlling corrosion in concrete under very aggressive environments. Sound SCR (316L cladding) resisted corrosion in saturated Ca(OH)2 solution (SCS) with up to 5 wt% chloride. Cladding breaks on SCR induced significant corrosion of exposed underlying CS in SCS with only 1 wt% chloride. A computer...

2004
Richard A. Corbett

Indoor corrosion failures of aluminum-finned copper-tube evaporator coils, and also in some systems without aluminum fins, is a menacing issue in the heating, ventilation, and air conditioning (HVAC) industry. Extensive laboratory testing has verified the development of a reproducible screening method to assess suspected contaminants of producing premature failures of copper tube resulting from...

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