Desarrollo de las competencias b??sicas de los estudiantes de Educaci??n Superior mediante la e-Evaluaci??n orientada al aprendizaje

Resumen basado en el de la publicaci??n

La f??sica : un element b??sic per al desenvolupament tecnol??gic i cultural

Resumen basado en el de la publicaci??n

Thermoluminescence, structural and magnetic properties of a Li(2)O-B(2)O(3)-Al(2)O(3) glass system doped with LiF and TiO(2)

A Li(2)O-B(2)O(3)-Al(2)O(3) glass system, un-doped and doped with LiF, and/or TiO(2) was synthesized by the fusion method and its physical properties were investigated by thermoluminescence (TL), X-ray diffraction (XRD), electron paramagnetic resonance (EPR), atomic force microscopy (AFM) and differential thermal analysis (DTA). The samples were subjected to gamma-rays from a colbalt-60 ((60)Co) source. These techniques provided evidence of LiF and LiF doped with Ti crystal formation in the glass system. A TL glow peak at about 433 K was sensitive to (60)Co gamma-rays and showed good linearity with doses and consequently could be used to quantify radiation doses. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.

Listas A y B del Anteproyecto de Protocolo al Convenio Centroamericano sobre Equiparación de Gravámenes a la Importación

Incluye Bibliografía

1963-1968. Dall'avvento dell'amministrazione di Lyndon B. Johnson al Trattato di Non-Proliferazione. gli Stati Uniti, la Francia, la NATO e l'Europa agli esordi della distensione. Storia di una "non-crisi" transatlantica e della riorganizzazione dell'Alleanza.

The aim of this proposal is to explain the paradigm of the American foreign policy during the Johnson Administration, especially toward Europe, within the NATO framework, and toward URSS, in the context of the détente, just emerged during the decade of the sixties. During that period, after the passing of the J. F. Kennedy, President L. B. Johnson inherited a complex and very high-powered world politics, which wanted to get a new phase off the ground in the transatlantic relations and share the burden of the Cold war with a refractory Europe. Known as the grand design, it was a policy that needed the support of the allies and a clear purpose which appealed to the Europeans. At first, President Johnson detected in the problem of the nuclear sharing the good deal to make with the NATO allies. At the same time, he understood that the United States needed to reassert their leadeship within the new stage of relations with the Soviet Union. Soon, the “transatlantic bargain” became something not so easy to dealt with. The Federal Germany wanted to say a word in the nuclear affairs and, why not, put the finger on the trigger of the atlantic nuclear weapons. URSS, on the other hand, wanted to keep Germany down. The other allies did not want to share the onus of the defense of Europe, at most the responsability for the use of the weapons and, at least, to participate in the decision-making process. France, which wanted to detach herself from the policy of the United States and regained a world role, added difficulties to the manage of this course of action. Through the years of the Johnson’s office, the divergences of the policies placed by his advisers to gain the goal put the American foreign policy in deep water. The withdrawal of France from the organization but not from the Alliance, give Washington a chance to carry out his goal. The development of a clear-cut disarm policy leaded the Johnson’s administration to the core of the matter. The Non-proliferation Treaty signed in 1968, solved in a business-like fashion the problem with the allies. The question of nuclear sharing faded away with the acceptance of more deep consultative role in the nuclear affairs by the allies, the burden for the defense of Europe became more bearable through the offset agreement with the FRG and a new doctrine, the flexible response, put an end, at least formally, to the taboo of the nuclear age. The Johnson’s grand design proved to be different from the Kennedy’s one, but all things considered, it was more workable. The unpredictable result was a real détente with the Soviet Union, which, we can say, was a merit of President Johnson.

Technique to measure heats of reaction of Ti-B, Al-Ti-B, and Al-Ti-B4C powder blends

In this research, a modification to initiation aid ignition in bomb calorimetry that involves systemically blending levels of boron and potassium nitrate initiation aids with a bulk structural energetic elemental power blend is developed. A regression is used to estimate the nominal heat of reaction for the primary reaction. The technique is first applied to the synthesis of TiB2 as a validation study to see if close proximity to literature values can be achieved. The technique is then applied to two systems of interest, Al-Ti-B, and Al-Ti-B4C. In all three investigations, x-ray diffraction is used to characterize the product phases of the reactions to determine the extent and identity of the product phases and any by-products that may have formed as a result of adding the initiation aid. The experimental data indicates the technique approximates the heat of reaction value for the synthesis of TiB2 from Ti-B powder blends and the formation of TiB2 is supported by volume fraction analysis by x-ray diffraction. Application to the Al-Ti-B and Al-Ti-B4C blends show some correlation with variation of the initiation aid, with x-ray diffraction showing the formation of equilibrium products. However, these blends require further investigation to resolve more complex interactions and rule out extraneous variables.

Inerlekh parṭeyishe fragn fun Al.K.P.(B.)

Y. Sṭalin

Sefer bet Aharon ... asher be-ʿorato paʿal Aharon b. m. Shemuʾel ben shel ish ḥayil

In hebr. Schr.

Sefer bet Aharon ... asher be-ʿorato paʿal Aharon b. m. Shemuʾel ben shel ish ḥayil

In hebr. Schr.

Denkmal für kommende Geschlechter : eine genaue Schilderung der in der Gemeinde zu Gross-Kanizsa stattgehabten Feier, als deren Oberrabbiner, Hirsch B. Fassel, am 15 April 1863 das goldene Verdienstkreuz erhalten hat

Enth. außerdem: Rede von Rabbi Fassel bei der Verleihung des Verdienstkreuzes

Mss. codices Hebraici biblioth. I. B. De-Rossi ling. orient. prof. accurate ab eodem descripti et illustrati : accedit appendix qua continentur mss. codices reliqui al. linguarum

I. B. De-Rossi

Simposio Internacional. Artes, Ciencias y Letras en la América Colonial. B. Aires, Biblioteca Nacional de la República Argentina, 23 al 25 de noviembre de 2005

Fil: Buisel, María Delia. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

La informática educativa en la E.G.B : Necesidad de adecuación al sistema

Fil: Riera, Alicia Beatriz. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.