... been recorded in the diet1. Terrestrial A small police outpost was established on the island in 1969. ... 40 birds, but given its high levels of recruitment, this is probably not a serious threat, t...

... de la quinta semana resultaron resistentes a este antibiótico. Aun cuando la prevalencia de la resistencia a ... ...

13 Oct 2010 ... En ambientes de muy baja gravedad, en cambio, no se necesita ning?n ... hechas de aleaci?n de titanio, vidrio met?lico, y acero inoxidable. ...

The publication presents the papers delivered in a workshop about trials and selection of the steels and their thermal treatments for stamping industry.

... including a direct microscopic examination and sodium nitrate flotation, completed during quarantine in May 2002 were negative ... negative for acid-fast staining organisms. Four fecal flotation examinati...

Initial Environmental Impact Assessment. 1991. J.M. Acero, J.L. Agraz, C.A. Aguirre and J. Plotz. Instituto Antartico Argentino and Alfred Wegener Institut ...

-- 116. Bhattachary, D. 1998. Enviromental values: a critical ap� praisal of cost�benefit analysis

Environmental impact assessment associated with the salvage operation of the ... Initial Environmental Impact Assessment. 1991. J.M. Acero, J.L. Agraz, C.A. ...

grant (FA9550-04-1-0117), an AFRL grant via Veridian and an NSF grant (IIS-0534707). We thank A. Acero

The purpose of the publication is to explain in an easy way the traditional process of steel manufacturing, and to promote the interest of the foundrymen working without large investment.

Many tropical fruits are rich in anthocyanins, though limited information is available about the characterization and quantification of these anthocyanins. The identification of anthocyanin pigments in four tropical fruits was determined by ion trap mass spectrometry. Fruits studied included acero...

... 4 a 7 d�as. Salmonella typhimurium, Algunas cepas de esta bacteria, como por ejemplo, la DT104, son resistentes a varios antibi�ticos. ...

13 Dic 2001 ... A?n as?, alcanza la nave una gran cantidad de calor, lo que requiere que la parte delantera sea recubierta con material resistente al calor. ...

9 May 2011 ... Un bot?n peque?o con cuatro orificios; Una aguja para cocer grande y resistente ; 16 lentejuelas o cuentas muy peque?as, preferentemente de ...

... de Conyza bonariensis (L.) Cronq. ERIBO tanto resistente como susceptible al glifosato. Las plantas de 60 accesiones de Conyza bonariensis (L.) Cronq. ERIBO, muestreadas de 5 prefecturas en Grecia, fueron ...

13 Oct 2010 ... Merte utiliz? cuarzo para fabricar un fondo resistente, suave y transparente para la ... Luego recubri? el cuarzo con una capa superfina de oro. ...

13 Oct 2010 ... Pero los astr?nomos han descubierto algo que es todav?a m?s resistente: " hidrocarburos polic?clicos arom?ticos", menciona Achim Tappe, ...

13 Oct 2010 ... Los veh?culos espaciales tambi?n se beneficiar?an de la inteligencia adicional que ofrecen los microprocesadores modernos. ...

El uso repetido del mismo herbicida, puede provocar poblaciones de malezas que consisten de biotipos susceptibles (S) que son controlados y biotipos resistentes (R), que escapan al control para producir y retornar semilla con la característica de resistencia, al banco de semillas del suelo. Esta lección se enfocará en la dinámica poblacional de una población de malezas ...

can be included in modeling the language (Wang, 2000; Erdogan et al., 2002). In this article, we accuracy may indeed be two very different businesses after all. References Erdogan H. Sarikaya R. Gao Y

13 Oct 2010 ... El acero inoxidable es una aleaci?n (mezcla de hierro, n?quel y cromo), as? como lo es la mayor parte de la orfebrer?a (oro y n?quel). ...

In order to protect carbon steel of towers and piping of a GS experimental heavy water plant against corrosion produced by the action of aqueous solutions of hydrogen sulphide, a method, elsewhere published, was developed. Carbon steel exposed to saturate...

In order to protect carbon steel towers and piping of Girlder sulfide (G.S.) experimental heavy water plants against corrosion produced by the action of aqueous solutions of hydrogen sulfides, a method, previously published, was developed. Carbon steel, e...

The Atlas summarizes the experience of almost two decades of applied research in the siderurgical industry (IAS-CNEA joint agreements), by means of hot torsion test to evaluate the hot workability in steels through ductility properties and the formation s...

Within the framework of the development of low activation structural materials to be used in nuclear fusion reactors four martensitic Fe-9,5 Cr alloys were conceived with different contentsof tungsten-tantalum and/or germanium as substitutions for Mo, Ni,...

Ion nitriding is a glow discharge process that is used to induce surface modification in metals. It has been applied to 316-L austenitic stainless steel looking for similar benefits already obtained in other steels. An austenitic stainless steel was selec...

The relationship between the degree of sensitization and the corrosion resistance of austenitic stainless steel has been reported since long time, however this relationship does not account for all the experimental results reported on the literature. The ...

The main objective of the work was to determine the most common defects occuring in tool steels of the AISI D-2, S-1, 0-1 and W-2 series during thermal treatment. Defects were evaluated by metallographic analyses, a method used to determine and recognize ...

This is a theoretical-experimental laboratory study on the Electroslag Remelting Technology (ESRT) of high quality steels. The objective of this study was to analyze the problems that this technology entails and thus facilitate its industrial application ...

Maraging steel fabrication process metallurgy and cost effectiveness were investigated. Experimental melts were carried out in an induction furnace under argon atmosphere, and alternatively with vacuum remelting or direct induction melting under vacuum. A...

In this work, metallic coatings of nickel was made over carbon steel using two different electrolytic solutions: The Watts's bath and the nickel sulfamate bath, using a pulse variable current. The method use was the traditional method, its means a thermos...

The experimental study focused on the behavior of six different steels, of approximately 0.35% C and various contents of Cr, Ni, and Mo. Each of these steels were tested in order to determine its fatigue limit to 10 million cycles, in 5 different states (...

Sensitization is a cause of corrosion that has been widely studied in austenitic steels; however, the relationship between sensitization and mechanical properties of steel is less known. Therefore, the objective of this work is to study the mechanical pro...

Telemetry Systems, Isanti, MN, USA; Holohil Systems, Carp, ON, Canada). All radios were attached ventrally-knobbed hornbill Aceros cassidix during the non-breeding season. � In: Poonswad, P. (ed.), The Asian hornbills

The intergranular stress cracking of welded joints of austenitic stainless steel, AISI 304, is a serious problem in BWR type reactors. It is associated with the simultaneous presence of three factors; stress, a critical media and sensibilization (DOS). EP...

Corrosion susceptibility under stress of AISI 304 steel sensitized in a sodium thiocyanate solution has been studied and results were compared with those obtained with solutions of thiosulfate and tetrathionate. Sensitized steel type 304 is highly suscept...

The relationship between: microstructure-heat treatment, microstructure-mechanical properties, microstructure-corrosion resistance make that the study of the microstructure of metals and alloys be a powerful tool either in technical-scientific research as...

With this work it is demonstrated the possibility of performing the nitriding process by using a CVD-ECR source, based on the results obtained after treating several samples of AISI H-12 steel. Also, the main operating parameters (time of treatment, sampl...

The peak stress and the steady state values for free cutting, carbon and alloyed steels deformed at high temperatures were obtained in this paper as a result of two regressions. With these data and the peak deformation values obtained in a former work, st...

Phosphate coatings are inorganic crystalline deposits laid down uniformly on properly prepared surfaces by a chemical reaction with the treated base metal. The reaction consists in dissolving some surface metal by acid attack and then causing surface neut...

'anodo de carb'on, reaccionando con 'el y produciendo di'oxido de carbono (ver [8]). En los ' ultimos a aislantes. Contiene un c'atodo formado por un bloque de carb'on atravesado por una barra de acero en cuyo

The influence of brain damage on the cause of death resulting from transfusion resistant, i.e. irreversible, shock was investigated in rats. Unanesthetized rats, cannulated the preceding day, were bled from an artery. In animals bled from the carotid arte...

13 Ago 2010 ... El recubrimiento resuelve un problema pero crea otro: el ... por la Oficina de Investigaci?n Biol?gica y F?sica de la NASA para recubrir y ...

... Caracterizaci�n molecular de pl�smidos con genes resistentes a antibi�ticos en aislamientos aviares de Pasteurella multocida. Se determinaron ... secuencias mostr� que los genes de resistencia a antibi�ti...

The objective of the work is to analyze the variation in height of the stiffness of a reinforced concrete shear wall coupled with a moment resisting frame under seismic action. The characterization of an 8 story typical building was made according to comm...

The results obtained in the framework of a recent 1-year pilot study on the incidence of methicillin-resistant Staphylococcus aureus (MRSA) in patients admitted to the research hospital for neurological rehabilitation Fondazione Santa Lucia. This study be...

... una cepa patógena de Escherichia coli resistente a antibióticos en pollitos de engorde de un día de ... tipo O78:K80 que presentó resistencia a seis antibióticos. Se usaron tres métodos de colonización en...

... En este estudio se compararon las técnicas de cultivo, tinción de ácido alcohol resistente, reacción en cadena ... cepas de Mycobacterium avium. Para la técnica de cultivo se utilizaron tres medios de cul...

... directo en la prevenci�n de pat�genos resistentes a antibi�ticos en pollos. Importancia de los Hallazgos Este estudio ... puede ser una alternativa al uso profil�ctico de antibi�ticos para superar la NE ...

... should be reconsidered. Bact�rias Gram-Negativas Resistentes a Antibi�ticos em Aves da Mata Atl�ntica Brasileira Resumo. Avaliamos a resist�ncia a antibi�ticos de bact�rias isoladas por swab cloacal em ave...

This paper is part of a series which corresponds to the carbon steel behaviour as construction material for Girlder sulfide (G.S.) heavy water plants. The present work analyses the iron concentration study during passivation in the passivating fluid. At t...

In heavy water plants that use the bithermal exchange H(sub 2)S-H(sub 2)O, a protective scale against corrosion is formed by the action of a solution of H(sub 2)S at high temperature for a tile between 10 to 14 days. Exposure to humid air during plant shu...

In order to protect carbon steel towers and piping of a GS experimental heavy water plant against corrosion produced by the action of aqueous solutions of hydrogen sulphide, a method, elsewhere published, was developed. Carbon steel exposed to saturated a...

The passivation on carbon steels, in particular ASTM A 516 Degree 60 and ASTM A 333 steels is made, submitting it to the action of H(sub 2)S/H(sub 2)O(sup 1,2) corrosive medium. The steel is rapidly corroded by H(sub 2)S in aqueous solution, forming iron ...

In order to protect carbon steel towers and piping of Girlder sulfide (G.S.) experimental heavy water plants against corrosion produced by the action of aqueous solutions of hydrogen sulfide, a method, previously published, was developed. Carbon steel, ex...

An ASTM A 516 degree 60 carbon steel superficial protection technique submitted to a hydrogen-water sulfide corrosive medium at 2 MPa of pressure and 40-125 deg C forming on itself an iron sulfide layer was tested. Studies on pH influence, temperature, pa...

This work describes the assays aimed to passivate the steel carbon of the process pipings. This steel is marked by the ASTM A 333 G6 and is chemically similar to those of isotopic exchange towers which corrode in contact with in-water hydrogen sulfide sol...

de la meteorizaci�n de una balsa de residuos pir�ticos Patricia Acero Salazar #12;Estructura del proyecto Evoluci�n flujo y transporte reactivo en zona no saturada de balsas de residuos pir�ticos residuo (Tailings) Presa Capa agua anti-oxidaci�nEvaporaci�n O2 Tongadas sucesivas #12;O2 #12;Objetivos del

would require low B-field (magnetic field damping after ... VHE �-rays. H.E.S.S. prelim. HESS VHE excess map. XMM map (2-4.5 keV) smoothed to HESS PSF preliminary ... B&W map: ATCA 1.4 GHz. Tian et al., ApJ 2008. Color map: H.E.S.S. �-ray excess ... Matching increase in absorption derived from 12CO observations ...

The susceptibility of a 17-4PH type steel to Stress Corrosion Cracking (SCC) in low pressure steam turbine environments was assessed using slow strain rate test at 90 Centigrade and at 1.35x10(sup -6) seg(sup -1). Environments tested included different co...

The most common and plesiomorphic mechanism of food transport in tetrapods is lingual-based. Neognathous birds use this mechanism for exploiting a large diversity of food resources, whereas paleognathous birds use cranioinertial mechanism with or without tongue involvement. Food transport in three hornbills' species (Aceros cassidix, A. undulatus, and Buceros hydrocorax) is ...

As complement to the experiences on carbon steel passivation for its use in G.S. (Girlder sulfide) heavy water production plants, the results herein obtained are given, processing the material with a saturated solution at 2.3 MPa of full pressure and 125 ...

New developments with bainite have resulted in a steel with an ultimate tensile strength of 1.7-2.5 GPa and a toughness in excess of 30-40 MPa m1/2. The novel microstructure is generated in a high carbon high silicon steel isothermally transformed at temperatures of 200 C-350 C. Iron does not diffuse during the transformation to bainite at this low temperature. As a result, 20-40 nm thick plates ...

A liquid bridge is a mass of liquid sustained by the action of the surface tension force between two parallel supporting disks Apart from their basic scientific interest a liquid bridge can be considered as the simplest idealization of the configuration appearing in the floating zone technique used for crystal growth and purification of high melting point materials footnote Messeguer et al emph ...

Schwertmannite, an iron oxyhydroxide sulfate nanomineral, plays a significant role in the geochemistry of acid mine drainage (AMD) as a metastable phase with respect to goethite and by retaining toxic metals, e.g. arsenic [1]. Schwertmannite�s characteristic morphology is needles 100-300 nm long and only 5-10 nm in diameter extending from a dense aggregate. The poorly-and nano-crystalline nature ...

BackgroundAlthough nowaday it is broadly accepted that mitochondrial DNA (mtDNA) may undergo recombination, the frequency of such recombination remains controversial. Its estimation is not straightforward, as recombination under homoplasmy (i.e., among identical mt genomes) is likely to be overlooked. In species with tandem duplications of large mtDNA fragments the detection of recombination can ...