Wide Field of View Spectroscopy Using Fabry-Perot Interferometers

We present a high resolution spectrometer consisting of dual solid Fabry-Perot Interferometers (FPIs). This work is intended to be an all inclusive documentation of the instrument including discussion of the design of this instrument, the methods used in data reduction, and the analysis of these data. Each FPI is made of a single piece of L-BBH2 glass which has a high index of refraction n~2.07 with a thickness on the order of 100 μm. Each is then coated with partially reflective mirrors to create a resonant cavity and thus achieve a spectral resolution of R~30,000. Running the FPIs in tandem reduces the overlapping orders and allows for a much wider free spectral range and higher contrast. We will also discuss the properties of the FPIs which we have measured. This includes the tuning of the FPIs which is achieved by adjusting the temperature and thus changing the FPI gap and the refractive index of the material. The spectrometer then moves spatially in order to get spectral information at every point in the field of view. We select spectral lines for further analysis and create maps of the line depths across the field. Using this technique we are able to measure the fluorescence of chlorophyll in plants and attempt to observe zodiacal light. In the chlorophyll analysis we are able to detect chlorophyll fluorescence using the line depth in a plant using the sky as a reference solar spectrum. This instrument has possible applications in either a cubesat or aerial observations to measure bulk plant activity over large areas.

Le patrimoine culturel universitaire: une méthodologie pour la conservation et la valorisation des biens culturels mobiliers. Le cas de l'Instituto Superior José Antonio Echeverría à la CUJAE - La Havane

Une préoccupation importante pour le patrimoine culturel universitaire vient de se développer en Europe depuis les années 1980. Dans ce riche patrimoine sont inclus les biens mobiliers de valeur historique, scientifico-technique, académique, documentaire, artistique, architecturale et urbaine. Le continent européen a développé durant ces dernières années des actions significatives qui comprennent la création d’organisations, de comités à caractère international, ainsi que la rédaction de recommandations et règlements au niveau européen et institutionnel. Plusieurs universités ont pris des initiatives dans le domaine de la conservation et de la valorisation. À Cuba, il existe un grand intérêt pour le patrimoine culturel de la nation. Malgré la situation économique difficile depuis plusieurs années, Cuba a réussi des bons résultats dans la gestion des centres historiques et des biens patrimoniaux de la nation. Cependant, la thématique liée au patrimoine universitaire est encore peu discutée sur le territoire national, malgré depuis 2010, des actions pour étudier ce patrimoine sont mis en oeuvre grâce aux initiatives des universités de la capitale cubaine. Notre étude de cas, l’Instituto Superior Politécnico José Antonio Echeverría, appartenant au campus CUJAE1, fondé en 1964, a produit un patrimoine culturel universitaire de valeur scientifique, artistique et documentaire qui le distingue des autres universités. Malheureusement, ils existent plusieurs problèmes qui affectent les biens culturels mobiliers de l’ISPJAE et son campus. À partir de la situation actuelle, nous proposons une méthodologie en faveur de la conservation et la valorisation de ses biens, basée sur l’étude des tendances actuelles dans les universités européennes et cubaines étudiées. Les actions proposées favoriseront aussi les biens immobiliers, en tenant compte qu’ils ont un fort lien avec ceux mobiliers; ABSTRACT: An important concern for the university cultural heritage has just developed in Europe since the 1980s. The real asses of historic, scientific-technical, academic, documentary, artistic, architectural values are included in these rich heritages. The European continent developed during the last years significant actions which include the creation of organizations, committees with international character, as well as the writing of recommendations and regulations at the European and institutional level. Several universities took initiatives in the fields of the preservation and the valuation. In Cuba, there is a big interest for the cultural heritage of the nation. In spite of the difficult economic situation for several years, Cuba made a success of good results in the management of the historic centers and the patrimonial asses of the nation. However, the subject related to the university heritage is again little discussed in the national territory in spite of since 2010, several actions to study this heritage are implemented, thanks to the initiatives of the universities of the Cuban capital. Our case of study, Instituto Superior Politécnico José Antonio Echeverría, belonging to the campus CUJAE, established in 1964, produced a university cultural heritage of the scientific, artistic and documentary value, which distinguishes it from other universities. Unfortunately, there are several problems, which affect the real cultural asses of the ISPJAE and its campus. From the current situation, we propose a methodology in favor of the preservation and the valuation of its properties, based on the study of the current trends in the studied European and Cuban universities. The proposed actions will also favor the real property, taking into account that they have a strong link with those movable cultural asses; RIASSUNTO: Una preoccupazione importante per il patrimonio culturale universitario inizia a svilupparsi in Europa dagli anni 1980. In questo ricco patrimonio sono inclusi i beni mobili di valore storico, scientifico-tenico, accademico, documentario, artistico, architettonico e urbano. Il continente europeo ha sviluppato durante questi ultimi anni delle azioni significative che comprendono la creazione di organizazioni, di comitati internazionali, così come la redazione di raccomandazioni e regolamenti a livello europeo e istituzionale. Molte università hanno intrapreso delle iniziative nella conservazione e nella valorizzazione. A Cuba esiste un grande interesse per il patrimonio culturale della nazione. Malgrado la difficile situazione economica da molti anni Cuba ha ottenuto dei buoni risultati nella gestione di centri storici e di beni patrimoniali del Paese. Comunque, la tematica relativa al patrimonio universitario è ancora poco discussa anche se dal 2010 siano messe in opera delle azioni per studiare questo patrimonio, grazie alle iniziative di alcune università della capitale cubana. Il nostro caso di studio, l’Instituto Superior Politécnico José Antonio Echeverría –ISPJAE-, appartenente al campus CUJAE fondato nel 1964, ha prodotto un patrimonio culturale universitario di valore scientifico, artistico e documentale che la distinguono delle altre università. Purtroppo, esistono molti problemi che influenzano i beni culturali mobili dell’ISPJAE e del suo campus. A partire della situazione attuale e facendo parte di questa ricerca, si propone una metodologia a favore della conservazione e della valorizzazione dei loro beni fondata sullo studio delle tendenze attuali in università europee e cubane. Alcune delle azioni proposte sono finalizzate e destinate anche ai beni immobili, tenendo conto che questi hanno un forte rapporto con i beni mobili.

Construção, caracterização e aplicação de eletrodos para descarga por arco de cátodo oco

The system built to characterize electrodes and, consequently, deposited fine films are constituted by a hollow cathode that works to discharges and low pressures (approximately 10-3 to 5 mbar), a source DC (0 to 1200 V), a cylindrical camera of closed borossilicato for flanges of stainless steel with an association of vacuum bombs mechanical and spread. In the upper flange it is connected the system of hollow cathode, which possesses an entrance of gas and two entrances for its refrigeration, the same is electrically isolated of the rest of the equipment and it is polarized negatively. In front of the system of hollow cathode there is a movable sample in stainless steel with possibility of moving in the horizontal and vertical. In the vertical, the sample can vary its distance between 0 and 70 mm and, in the horizontal, can leave completely from the front of the hollow cathode. The sample and also the cathode hollow are equipped with cromel-alumel termopares with simultaneous reading of the temperatures during the time of treatment. In this work copper electrodes, bronze, titanium, iron, stainless steel, powder of titanium, powder of titanium and silício, glass and ceramic were used. The electrodes were investigated relating their geometry change and behavior of the plasma of the cavity of hollow cathode and channel of the gas. As the cavity of hollow cathode, the analyzed aspects were the diameter and depth. With the channel of the gas, we verified the diameter. In the two situations, we investigated parameters as flow of the gas, pressure, current and applied tension in the electrode, temperature, loss of mass of the electrode with relationship at the time of use. The flow of gas investigated in the electrodes it was fastened in a work strip from 15 to 6 sccm, the constant pressure of work was among 2.7 to 8 x 10-2 mbar. The applied current was among a strip of work from 0,8 to 0,4 A, and their respective tensions were in a strip from 400 to 220 V. Fixing the value of the current, it was possible to lift the curve of the behavior of the tension with the time of use. That curves esteem in that time of use of the electrode to its efficiency is maximum. The temperatures of the electrodes were in the dependence of that curves showing a maximum temperature when the tension was maximum, yet the measured temperatures in the samples showed to be sensitive the variation of the temperature in the electrodes. An accompaniment of the loss of mass of the electrode relating to its time of use showed that the electrodes that appeared the spherical cavities lost more mass in comparison with the electrodes in that didn't appear. That phenomenon is only seen for pressures of 10-2 mbar, in these conditions a plasma column is formed inside of the channel of the gas and in certain points it is concentrated in form of spheres. Those spherical cavities develop inside of the channel of the gas spreading during the whole extension of the channel of the gas. The used electrodes were cut after they could not be more used, however among those electrodes, films that were deposited in alternate times and the electrodes that were used to deposit films in same times, those films were deposited in the glass substrata, alumina, stainless steel 420, stainless steel 316, silício and steel M2. As the eletros used to deposit films in alternate time as the ones that they were used to deposit in same times, the behavior of the thickness of the film obeyed the curve of the tension with relationship the time of use of the electrode, that is, when the tension was maximum, the thickness of the film was also maximum and when the tension was minimum, the thickness was minimum and in the case where the value of the tension was constant, the thickness of the film tends to be constant. The fine films that were produced they had applications with nano stick, bio-compatibility, cellular growth, inhibition of bacterias, cut tool, metallic leagues, brasagem, pineapple fiber and ornamental. In those films it was investigated the thickness, the adherence and the uniformity characterized by sweeping electronic microscopy. Another technique developed to assist the production and characterization of the films produced in that work was the caloteste. It uses a sphere and abrasive to mark the sample with a cap impression, with that cap form it is possible to calculate the thickness of the film. Through the time of life of the cathode, it was possible to evaluate the rate of waste of its material for the different work conditions. Values of waste rate up to 3,2 x 10-6 g/s were verified. For a distance of the substratum of 11 mm, the deposited film was limited to a circular area of 22 mm diameter mm for high pressures and a circular area of 75 mm for pressure strip. The obtained films presented thickness around 2,1 µm, showing that the discharge of arch of hollow cathode in argon obeys a curve characteristic of the tension with the time of life of the eletrodo. The deposition rate obtained in this system it is of approximately 0,18 µm/min

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Mode of access: Internet.

As rotas Jacobeias em Portugal : estudo e divulgação do caso alentejano. Proposta de valorização - criação de um museu virtual e de um centro de interpretação

As peregrinações, entre elas a Santiago de Compostela, marcaram profundamente a sociedade europeia. Além das questões religiosas, os caminhos de Santiago originaram a criação de uma rede de infraestruturas que permitiu o desenvolvimento de regiões e aglomerados urbanos. Para provar a importância desses caminhos no distrito de Évora partimos de uma abordagem aos testemunhos patrimoniais evocando S. Tiago (móveis e imóveis, materiais e imateriais), procurando, como objectivo da Dissertação de Mestrado, conceber um projecto para divulgação da informação recolhida. Assim, sabendo que a sociedade actual exige mais informação visual na compreensão do legado cultural, optámos pela criação de um Museu Virtual e de um Centro de Interpretação. Se os Museus Virtuais oferecem inúmeras possibilidades de acesso às manifestações culturais, possibilitando ainda a formação através de tecnologias aplicadas na educação, os Centros de Interpretação criam condições de acolhimento e visita adequadas, fornecendo informações essenciais na compreensão e valorização dos legados patrimoniais. ABSTRACT: The pilgrimages, among them Santiago de Compostela, profoundly marked European society. ln addition to religious matters, the Way of Saint James led to the creation of a network infrastructure that enabled the development of regions and urban areas. To prove the importance of these pathways in the district of Évora part of an asset with reference to testimonies S. James (movable and immovable, tangible and intangible), for such purpose the master's thesis, designing a project to disseminate the information collected. So, knowing that society is demanding more visual information to understand the cultural legacy, we decided to create a Virtual Museum and an Interpretation Center. lf the Virtual Museums offer many opportunities for access to cultural events and can therefore training through technologies applied to education, the Centers for Interpretation create conditions for the reception and visit appropriate, providing key information in understanding and appreciation of legacies.

The denouncement in the social textualization by interweavement of significant materialities

In this paper I analyse the discursive mechanics on a scene of the Brazilian film Ó paí, ó! , directed by Monique Gardenberg and based on Marcio Meirelles's play. As a start I reckon that the film textualises the social aspects parting from the relation between humour and denunciation. This relation mirrors at another one: the one between art and resistence, which is broadcast on the common  sense as well as on the theoretical-political and artistical field. I reckon humour as the expression of both exaggeration and irony that is formulated by the interweavement of images, gestures, sounds and text. The denunciation, however, is viewed as the textualisation of the conflict, once there is an element of denouncement in the play (as well as in the film), since it intends to portrait the situation of the inhabitants of Pelourinho (a historical neighbourhood in Salvador) during the 90's. This was the period when the neighbourhood was under refurbishment, motivated by touristic interests. The analysis is done under the analytical and theoretical premises of the Discourse Analysis, on a materialist perspective. I also use the notions of interdiscourse, resistence and denunciation against the analytical notions of intradiscourse and discursive memory. I believe to be able to show how the visual formulations textualise social aspects, considering the intersection between humour and denunciation as an axis of sustainability of these formulations.