|
|
|
|
| |
|
| |
|
|
| Feitoza-Silva,Michele; Carvalho,Carolina Mesquita de; Bittencourt,Lívia Bretas; Leandro,Katia Christina; Gemal,André Luis. |
| According to Anvisa risk rating, hypodermic needles offer medium risk to the user’s health. This study discussed the importance of the corrosion resistance test in tubes of hypodermic needles, in the product quality control. A review of cannulas of hypodermic needles was carried out according to ISO 9626:2003 and 9259:1997 ABNT NBR. For the results evaluation, a scale which classifies the extent of corrosion was adjusted. 174 samples of PNI needles from 17 States and 9 different record holders were analyzed. According to the methodology of ISO 9626:2003, 100% of the samples were considered satisfactory. However, in accordance with the methodology of ISO 9259:1997, 97.1% of the samples were rejected. Irregularities can lead to impairment of product quality,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Corrosion; Hypodermic needles; Health surveillance. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100565 |
| |
|
|
| Larche, Nicolas; Dezerville, Philippe; Le Flour, Denise. |
| To comply with the demanding operational conditions of seawater reverse osmosis (SWRO) process, both in terms of corrosion resistance and mechanical properties, the conventional metallic material selection was often stainless steel for seawater and brines handling units (e.g. pumps, valves and piping). However, many cases of corrosion failures of stainless steel in SWRO desalination units have been reported often attributed to un-adapted stainless steel grade selection and/or to the particular aggressive conditions in “warm” regions where many recent desalination plants are built (high ambient temperature, severe biofouling, etc.). The operational corrosion risk will actually highly depend on the material composition, on the metallurgy (i.e. cast or... |
| Tipo: Text |
Palavras-chave: Corrosion; Seawater reverse osmosis; Metallic materials; Stainless steels; Cathodic protection. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00124/23484/21396.pdf |
| |
|
|
| Larche, Nicolas; Dezerville, Philippe; Le Flour, Denise; Vinzio, Pascal; Kofler, Karl-heinz; Thierry, Dominique. |
| Stainless steel is widely used in seawater reverse osmosis units (SWRO) for both good mechanical and corrosion resistance properties. However, many corrosion failures of stainless steel in SWRO desalination units have been reported. These failures may often be attributed to un-adapted stainless steel grade selection and/or to the particular aggressive seawater conditions in "warm" regions (high ambient temperature, severe biofouling, etc.). Cathodic protection (CP) is a well-known efficient system to prevent corrosion of metallic materials in seawater. It is successfully used in the oil and gas industry to protect carbon steel structures exposed in open-sea. However, the specific service conditions of SWRO units may seriously affect the efficiency of such... |
| Tipo: Text |
Palavras-chave: Corrosion; Seawater reverse osmosis; Stainless steels; Cathodic protection. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00344/45562/45163.pdf |
| |
|
| |
|
| |
|
|
| Rueda Esteban,Roberto Javier; López McCormick,Juan Sebastián; Martínez Prieto,Daniel Ricardo; Hernández Restrepo,Juan David. |
| Teaching and learning anatomy, as a process, has changed. Fresh cadavers were once used as a tool for the student to approach the human body in order to overcome theoretical knowledge and gain applied expertise. Today, techniques such as corrosion casting are known to be a more effective way of achieving optimal results with the students. This paper examines a method to apply this technique to an organ using different polymers. The concentrations for acrylic, epoxy resin, polyester resin, and room temperature vulcanization (RTV) silicone are described, as well as the corresponding diameter of the duct to be injected with each one. A variety of specimens obtained using this technique, their qualities and characteristics are presented. The results of using... |
| Tipo: Journal article |
Palavras-chave: Corrosion Casting; Repletion; Corrosion; Teaching Anatomy; Preservation Techniques. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000300053 |
| |
|
|
|
