Informe de la misión de asesoría a la Secretaría de Industria y Comercio de la República Dominicana en la formulación del plan de acción y reforzamiento institucional

Incluye Bibliografí

Emulsion sheet doublets as interface trackers for the OPERA experiment

New methods for efficient and unambiguous interconnection between electronic counters and target units based on nuclear photographic emulsion films have been developed. The application to the OPERA experiment, that aims at detecting oscillations between mu neutrino and tau neutrino in the CNGS neutrino beam, is reported in this paper. In order to reduce background due to latent tracks collected before installation in the detector, on-site large-scale treatments of the emulsions ("refreshing") have been applied. Changeable Sheet (CSd) packages, each made of a doublet of emulsion films, have been designed, assembled and coupled to the OPERA target units ("ECC bricks"). A device has been built to print X-ray spots for accurate interconnection both within the CSd and between the CSd and the related ECC brick. Sample emulsion films have been extensively scanned with state-of-the-art automated optical microscopes. Efficient track-matching and powerful background rejection have been achieved in tests with electronically tagged penetrating muons. Further improvement of in-doublet film alignment was obtained by matching the pattern of low-energy electron tracks. The commissioning of the overall OPERA alignment procedure is in progress.Comment: 19 pages, 19 figure

Informe de la misión de asesoría a la Secretaría de Industria y Comercio de la República Dominicana en la formulación del plan de acción y reforzamiento institucional

Incluye Bibliografí

REPRESENTAÇÃO DOS ESPAÇO RURAL EM DOIS MOSAICOS NORTE-AFRICANOS: LABERII E DOMINUS IULIUS

Based on the comparative analysis of two mosaics: the one from the Laberii and the one ,from Dominus Julius, dated respectively from the IIIrd. and IVth. century and both from Africa Proconsularis, we will try to discover how the countryside was depicted and identify the economical, social and cultural inferences inside the representations of the rural space built in these two mosaics, confronted with the written documentation and the historiographic production about this subject

Pre-emptive efficacy of epidural fentanyl in elective abdominal surgery

Background and aim This study determines whether epidural fentanyl given before incision decreases the requirements for opioid analgesia postoperatively, compared with the same dose of epidural fentanyl given after the surgery

Application of Kashuri Fundo transform and homotopy perturbation methods to fractional heat transfer and porous media equations

Integral transformations have been used for a long time in the solution of differential equations either solely or combined with other methods. These transforms provide a great advantage in reaching solutions in an easy way by transforming many seemingly complex problems into a more understandable format. In this study, we used an integral transform, namely Kashuri Fundo transform, by blending with the homotopy perturbation method for the solution of non-linear fractional porous media equation and time-fractional heat transfer equation with cubic non-linearity