Aluminum anodizing: The study of the structure of the alumina layerSilio Moura
This work is focused on the study of the formation of an alumina (aluminum oxide) layer by double anodizing of aluminum. From this controlled oxidation method, a nanostructured porous layer with hexagonal cells was obtained. Ordered porous structures with 40-52 nm pore diameter were obtained by applying oxalic acid and a voltage-controlled procedure. The morphology of the surface and cross-section of the samples was analyzed by electron microscopy (Scanning and transmission). Finally, using this porous alumina as a template, Ni nanowires were obtained by electrochemical growth of the metal into the pores.
Aluminum anodizing: The study of the structure of the alumina layerSilio Moura
This work is focused on the study of the formation of an alumina (aluminum oxide) layer by double anodizing of aluminum. From this controlled oxidation method, a nanostructured porous layer with hexagonal cells was obtained. Ordered porous structures with 40-52 nm pore diameter were obtained by applying oxalic acid and a voltage-controlled procedure. The morphology of the surface and cross-section of the samples was analyzed by electron microscopy (Scanning and transmission). Finally, using this porous alumina as a template, Ni nanowires were obtained by electrochemical growth of the metal into the pores.
Tuvimos un día muy grato visitando los deltas de tres ríos entre Aichi-ken y ...B & M Co., Ltd.
http://www.kisosansenkoen.go.jp/e/kiso_sansen_park_center/index.html
Tuvimos un día muy grato visitando los deltas de tres ríos entre Aichi-ken y Gifu, tome unos bocetos del río Kiso, visitamos 4 templos, fuimos a los parques Nakamura centro Nagoya y Kiso sansen parque, en los próximos días subiré 650 fotos del recorrido.
We had a very pleasant day visiting the deltas of three rivers between Aichi-ken Gifu, take a few sketches of the Kiso River, visited 4 temples, we went to Nakamura parks downtown Nagoya and Kiso Sansen Park in the next few days I'll upload 650 travel photos .
私たちは、愛知県岐阜間の3つの川のデルタを訪れ、非常に楽しい一日は、木曽川のいくつかのスケッチをとりました4寺院を訪問し、私たちは私がよ、今後数日で、ダウンタウン名古屋中村パークや木曽三川公園に行ってきました650アップロード旅行の写真。
El método de Vogel, o aproximación de Vogel, es un método que permite llegar a una solución inicial factible del problema de transporte, la ventaja por sobre el de la esquina noroeste es que va adelante iteraciones y por lo tanto se obtiene una solución inicial mejor.
A continuación vamos a hablar de los siguientes metales: aluminio, cobre, estaño, cinc, latón, cobre, acero y fundición. Este trabajo ha sido realizado en OpenOffice.Impress
Anna Lucia Alfaro Dardón, Harvard MPA/ID. The international successful Case Study of Banco de Desarrollo Rural S.A. in Guatemala - a mixed capital bank with a multicultural and multisectoral governance structure, and one of the largest and most profitable banks in the Central American region.
INCAE Business Review, 2010.
Anna Lucía Alfaro Dardón
Dr. Ivan Alfaro
Dr. Luis Noel Alfaro Gramajo
Anna Lucia Alfaro Dardón, Harvard MPA/ID.
Opportunities, constraints and challenges for the development of the small and medium enterprise (SME) sector in Central America, with an analytical study of the SME sector in Nicaragua. - focused on the current supply and demand gap for credit and financial services.
Anna Lucía Alfaro Dardón
Dr. Ivan Alfaro