oalib

OALib Journal期刊

ISSN: 2333-9721

费用：99美元

投稿

时间不限

( 2672 )

( 2024 )

( 2023 )

( 2022 )

自定义范围…

匹配条件： “Rosa; Bobadilla” ，找到相关结果约13984条。
列表显示的所有文章，均可免费获取
第1页/共13984条
每页显示 条
Comportamiento de ánodos de sacrificio en la protección de aluminio NV-5083 en agua de mar, bahía de Valparaíso
Vera,Rosa; Bobadilla,Carla; Madrid,Alejandro;
Investigaciones marinas , 2006, DOI: 10.4067/S0717-71782006000100005
Abstract: the behavior of aluminum and zinc alloys were evaluated and compared as sacrifice anodes in cathodic protection of aluminum nv-5083 hulls in seawater in valparaíso bay. samples of the aluminum alloy used to manufacture boat hulls and al-zn-in, al-zn-sn, and zn anodes were made. electrochemical behavior was evaluated by means of polarization curves and corrosion potential as function of time. in parallel, galvanized pairs (boat hull-sacriice anode), were designed and immersed in the electrolyte for 16 days, determining the weight loss and evolution of the open circuit potential for each material. the results show that the aluminum based anodes provide the nv-5083 aluminum hull cathodic protection in seawater. however, they do not exceed the economical horizon and useful life of zinc anodes, because the aluminum based anodes present higher corrosion for the protection of a similar exposed area of aluminum
Comportamiento de ánodos de sacrificio en la protección de aluminio NV-5083 en agua de mar, bahía de Valparaíso Behavior of sacrifice anodes in the aluminium NV-5083 protection in seawater, Valparaíso bay
Rosa Vera,Carla Bobadilla,Alejandro Madrid
Investigaciones Marinas , 2006,
Abstract: Se evalúa comparativamente el comportamiento de aleaciones de aluminio y cinc, como ánodos de sacrificio en la protección catódica de cascos de aluminio NV-5083 en agua de mar de la bahía de Valparaíso. Para ello se confeccionaron probetas de la aleación de aluminio empleado en cascos de lanchas y ánodos de Al-Zn-In, Al-Zn-Sn y Zn. Los comportamientos electroquímicos se evaluaron mediante curvas de polarización y potencial de corrosión en función del tiempo. Paralelamente, se dise aron pares galvánicos de aleación del casco-ánodo de sacrificio, los cuales se sumergieron en el electrolito durante 16 días, determinándose la pérdida en peso y la evolución del potencial a circuito abierto de cada material. Los resultados muestran que los ánodos de base aluminio pueden proteger catódicamente el casco de aluminio NV-5083 en agua de mar, pero no logran superar el horizonte económico y de vida útil de los ánodos de cinc, debido a que presentan un mayor desgaste para la protección de igual área de aluminio The behavior of aluminum and zinc alloys were evaluated and compared as sacrifice anodes in cathodic protection of aluminum NV-5083 hulls in seawater in Valparaíso bay. Samples of the aluminum alloy used to manufacture boat hulls and Al-Zn-In, Al-Zn-Sn, and Zn anodes were made. Electrochemical behavior was evaluated by means of polarization curves and corrosion potential as function of time. In parallel, galvanized pairs (boat hull-sacriice anode), were designed and immersed in the electrolyte for 16 days, determining the weight loss and evolution of the open circuit potential for each material. The results show that the aluminum based anodes provide the NV-5083 aluminum hull cathodic protection in seawater. However, they do not exceed the economical horizon and useful life of zinc anodes, because the aluminum based anodes present higher corrosion for the protection of a similar exposed area of aluminum
Corrosión de Aleaciones Aeronáuticas de Aluminio y sus Componentes Relacionada a la Expresión Proteica del Hongo Hormoconis resinae
Araya,Raquel; Bobadilla,Carla V; Rosales,Blanca M; Vera,Rosa;
Información tecnológica , 2008, DOI: 10.4067/S0718-07642008000200008
Abstract: this article shows that the metabolic needs of oligoelements constitute the driving force of the microbiologically influenced corrosion produced by hormoconis resinae on aeronautical aluminium alloys. protein profiles of biofilms generated by fungal strains cultivated in aeronautical fuel were compared by electrophoresis in poliacrylamide gels. the morphology attack of alloys, its component metals and the growth of hyphae in cultures were characterized by means of environmental scanning electronic microscopy. one of the main conclusions is that corrosion would be associated to alloying elements that would act as oligoelements for the microorganism.
Corrosión de Aleaciones Aeronáuticas de Aluminio y sus Componentes Relacionada a la Expresión Proteica del Hongo Hormoconis resinae Corrosion of Aeronautical Aluminium Alloys and its Components Related to the Proteic Expression of the Fungus Hormoconis resinae
Raquel Araya,Carla V Bobadilla,Blanca M Rosales,Rosa Vera
Información Tecnológica , 2008,
Abstract: Este artículo muestra que los requerimientos nutricionales de oligoelementos constituyen la fuerza impulsora de la corrosión influenciada microbiológicamente que produce Hormoconis resinae en aleaciones aeronáuticas de aluminio. Se compararon perfiles proteicos de biopelículas del hongo cultivado en turbocombustible aeronáutico mediante electroforesis en geles de poliacrilamida. Se caracterizó la morfología de ataque de las aleaciones y de sus componentes metálicos puros y el crecimiento de hifas sobre cada metal mediante microscopía electrónica de barrido ambiental. Se concluyó que la corrosión estaría asociada a aleantes que actuarían como oligoelementos para el microorganismo. This article shows that the metabolic needs of oligoelements constitute the driving force of the microbiologically influenced corrosion produced by Hormoconis resinae on aeronautical aluminium alloys. Protein profiles of biofilms generated by fungal strains cultivated in aeronautical fuel were compared by electrophoresis in poliacrylamide gels. The morphology attack of alloys, its component metals and the growth of hyphae in cultures were characterized by means of environmental scanning electronic microscopy. One of the main conclusions is that corrosion would be associated to alloying elements that would act as oligoelements for the microorganism.
Colelitiasis y coledocolitiasis obstructiva en un gato doméstico: Informe de un caso
Racanco Delgado, J. Jesús;Méndez Aguilar, Rosa Elena;Aguilar Bobadilla, Joaquín;Salas Garrido, Gerardo;
Veterinaria México , 2009,
Abstract: the clinical characteristics and complementary methods that led to the cholelithiasis and obstructive choledocholithiasis diagnosis in a domestic cat, as well as the clinical-pathological changes are described. this condition is one of the causes of the extrahepatic bile duct obstruction syndrome (ebdo) with low incidence in dogs and cats.
Colelitiasis y coledocolitiasis obstructiva en un gato doméstico: Informe de un caso
J. Jesús Racanco Delgado,Rosa Elena Méndez Aguilar,Joaquín Aguilar Bobadilla,Gerardo Salas Garrido
Veterinaria México , 2009,
Abstract: Se describen las características clínicas y métodos complementarios que permitieron llegar al diagnóstico de colelitiasis y coledocolitiasis obstructiva en un gato doméstico, así como los cambios clínico-patológicos. Esta enfermedad forma parte del síndrome de obstrucción biliar ductal extrahepática con baja incidencia en perros y gatos.
A New Languidulane Diterpenoid from Salvia mexicana var. mexicana
Bernardo Antonio Frontana-Uribe,Martha Verónica Escárcega-Bobadilla,Rosa Estrada-Reyes,José Antonio Morales-Serna,Manuel Salmón,Jorge Cárdenas
Molecules , 2011, DOI: 10.3390/molecules16108866
Abstract: From the aerial parts of Salvia mexicana var. mexicana, two C-10 epimers (α and β) of salvimexicanolide were isolated. Our interpretation of the data, especially the 13C NMR, led us to conclude that the previously described 13C-NMR spectrum of the α-epimer was not accurately assigned and it actually corresponds to the β-epimer. The structures proposed for the salvimexicanolides were verified by means of NOESY experiments. Dugesin B, arbutin, naringenin and the mixture of oleanolic and ursolic acids were also isolated from this Salvia spp.
Genetic variability and structure of an isolated population of Ambystoma altamirani, a mole salamander that lives in the mountains of one of the largest urban areas in the world
ARMANDO SUNNY,DANIEL MART？？NEZ-G？？MEZ,GERM？？N DAVID MENDOZA-MART？？NEZ,MARTHA M. ZARCO-GONZ？？LEZ,ROSA-LAURA HEREDIA-BOBADILLA
- , 2017,
Abstract:
DURABILIDAD NATURAL DE LA MADERA DE CINCO ESPECIES APTAS PARA LA INDUSTRIA DE LA CONSTRUCCIóN
ELISA ALICIA BOBADILLA
MADERAS : Ciencia y Tecnología , 2005,
Abstract:
Rese a de "Prácticas políticas y cultura criolla en el Caribe hispano. El fenómeno nacional en el siglo XIX" de MARíA TERESA CORTéS ZAVALA (Coord.)
Leticia Bobadilla González
Tzintzun. Revista de Estudios Históricos , 2009,
Abstract:
第1页/共13984条
每页显示 条


Home
Copyright © 2008-2020 Open Access Library. All rights reserved.