Orientador: Ricardo Alan Verdú Ramos / Resumo: O efeito de diferentes condições para a produção de biomassa a partir do cultivo de microalgas em um fotobiorreator com iluminação com luz de LED foi estudado nesta dissertação. Com o objetivo de avaliar a produtividade de biomassa da espécie de microalga Scenedesmus sp, foram testadas quatro condições de cultivo no fotobiorreator, a saber: cultivo sem controle do fotoperíodo (iluminação durante todo o período de cultivo); cultivo com controle do fotoperíodo por um sistema eletrônico desenvolvido (12 horas de luz e 12 horas de escuro); cultivo com monitoramento da temperatura do ambiente a 20 °C; e, finalmente, cultivo com injeção de CO2 produzido por meio de um sistema de fermentação desenvolvido. O sistema eletrônico implementado é controlado por uma placa Arduino Uno, com as seguintes principais funções programadas no microcontrolador: controlar o fotoperíodo; monitorar a temperatura; e facilitar o acesso remoto aos dados dos sensores utilizados. O cultivo de microalgas da espécie Scenedesmus sp em fotobiorreator, durante 10 dias, mostrou ter uma produtividade modesta de 10,2 mg/l.dia, com um fotoperíodo de 24 horas de luz; de 13,5 mg/l.dia, com o controle do fotoperíodo de 12 horas de luz e 12 horas de escuro; de 17,8 mg/l.dia, com o monitoramento de temperatura em um ambiente com a temperatura controlada a 20 °C e controle do fotoperíodo de 12 horas de luz e 12 horas de escuro; e, finalmente, uma produtividade dentro dos níveis normais de 36,2 mg/l.dia, com o controle do... (Resumo completo, clicar acesso eletrônico abaixo) / Mestre

<p>As a part of improving the production, the Bolivian door manufacturer San Pedro S.A. needs to develop their level of industrial safety. Today their safety level is considered to be almost non-existing. Together with CADEFOR, San Pedro wishes for a handbook that show them how to work with industrial safety, how to implement it and were to begin.</p><p>Much needs to be done at San Pedro and the task has been to show both them and CADEFOR which parts San Pedro need to focus on to increase the overall safety.</p><p>It is considered important that they chose to start with the most crucial areas but the aim is that they will, during a period of time, attend to all problem areas mentioned.</p><p>The first thing San Pedro needs to do is to form an aim for the safety work. This means setting up a policy and routines for the ongoing work.</p><p>Secondly they should start working with improving the fire security, informing the personal about the risks they are exposed to. Further they should educate attendants in first aid, use the protection on the machines available and create a better luminosity environment.</p>

High energy photon induced processes at the CERN Large Hadron Collider (LHC) constitutes a unique testing ground for physics within and beyond the Standard Model of Elementary Particles. Colliding protons can interact by the exchange of one or two high energy photons, leading to very clean final state topologies. Several issues related to the study of photon interactions at the LHC are addressed in this Thesis. The detection of forward scattered protons, after the photon exchange, requires near-beam detectors. Developments of edgeless sensor prototypes have been realised as possible solutions for such an application. A proper design of these detectors has required developing a dedicated simulator (Hector) for the transport of charged particles particles in beamlines. Finally, the analyses of detection in the CMS experiment of the photon-induced exclusive production of lepton pairs are presented. In view of application early from the LHC start-up, in particular for the absolute luminosity measurement – the fundamental parameter of the LHC.

No description available.

As a part of improving the production, the Bolivian door manufacturer San Pedro S.A. needs to develop their level of industrial safety. Today their safety level is considered to be almost non-existing. Together with CADEFOR, San Pedro wishes for a handbook that show them how to work with industrial safety, how to implement it and were to begin. Much needs to be done at San Pedro and the task has been to show both them and CADEFOR which parts San Pedro need to focus on to increase the overall safety. It is considered important that they chose to start with the most crucial areas but the aim is that they will, during a period of time, attend to all problem areas mentioned. The first thing San Pedro needs to do is to form an aim for the safety work. This means setting up a policy and routines for the ongoing work. Secondly they should start working with improving the fire security, informing the personal about the risks they are exposed to. Further they should educate attendants in first aid, use the protection on the machines available and create a better luminosity environment.

No description available.

We consider the sensitivity of high luminosity neutrino experiments to light stable states, as arise in scenarios of MeV-scale dark matter. To ensure the correct thermal relic abundance, such states must annihilate to the Standard model via light mediators, providing a portal for access to the dark matter state in colliders or fixed targets. This framework implies that neutrino beams produced at a fixed target will also carry an additional “dark matter beam”, which can mimic neutrino scattering off electrons or nuclei in the detector. We therefore develop a Monte Carlo code to simulate the production of a dark matter beam at two proton fixed-target facilities with high luminosity, LSND and MiniBooNE, and with this simulation determine the existing limits on light dark matter. We find in particular that MeV-scale dark matter scenarios motivated by an explanation of the galactic 511 keV line are strongly constrained. / Graduate

Thesis (M.S.); Submitted to Tel Aviv Univ. (IL); 1 Dec 2003. / Published through the Information Bridge: DOE Scientific and Technical Information. "JLAB-PHY-03-219" "DOE/ER/40150-2651" Ran Shneor. 12/01/2003. Report is also available in paper and microfiche from NTIS.

Orientador: Luiz Fernando Rolim de Almeida / Resumo: As plantas estão expostas à seca extrema e cada vez mais frequente devido aos cenários das mudanças climáticas. A superação dos períodos de estresse hídrico e a rápida recuperação com o retorno da estação chuvosa são características de ajuste importantes para o estabelecimento e distribuição dos vegetais. Para amenizar os danos causados pela seca e intensa radiação, o metabolismo vegetal dispõe de mecanismos bioquímicos, anatômicos e epigenéticos que auxiliam na eliminação de radicais livres, no transporte e reserva de água e garantem respostas mais rápidas à reidratação assim que a água estiver novamente disponível no ambiente. Neste contexto, estudos baseados na deficiência hídrica se limitam em expor plantas a apenas um ciclo de défice, o que não acontece normalmente no ambiente. Os vegetais armazenam informações de estresses precedentes que não se resumem a padrões de sinalização isolados, mas funcionam como marcas deixadas anteriormente que auxiliam nas respostas a adversidades futuras. Deste modo, as consequências da seca de forma recorrente relacionando o estresse e a reidratação pós-estresse ainda não são bem compreendidos. A espécie utilizada para este estudo foi a Copaifera langsdorffii Desf. que possui folhas com mecanismos anatômicos e fisiológicos para superação das alterações ambientais. É conhecida pelas propriedades medicinais por meio do óleo amplamente consumido pela população em geral. Copaifera langsdorffii que ocorre em ambientes de diferentes regimes híd... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Plants are exposed to extreme drought increasingly frequent due to climate change scenarios. Overcoming periods of water stress and fast recovery with the rainy season return are characteristics of important adjustment for the establishment and wide vegetables distribution. To mitigate the damages caused by drought and intense radiation, plant metabolism features biochemical, anatomical and epigenetic mechanisms that assist in scavenging free radicals, increase the transport and water supply and ensure faster response to rehydration as soon as water is available in the environment again. In this context, studies based on water deficiency are limited to exposing plants only in one deficit cycle, which does not normally happen in the environment. Vegetables store information from previous stresses that are not limited to isolated signaling patterns, but function as previously left imprint that assist in responses to future adversities. Thus, the consequences of recurrent drought form related to stress and post-stress rehydration are not well understood yet. The species used for this study was Copaifera langsdorffii Desf. which has leaves with anatomical and physiological mechanisms to overcome environmental changes. The species has medicinal properties through the oil widely consumed by Brazilian population. It is present in several vegetation types in Brazil and South America that have different water and light pattern. These factors, among others, make this one of the most im... (Complete abstract click electronic access below) / Doutor

Submitted by RICARDO LUIS QUIROZ PALOMINO null (ricardoq1490@gmail.com) on 2017-10-28T01:24:48Z No. of bitstreams: 1 Dissertação Quiroz - VF - 27-10-2017.pdf: 2588668 bytes, checksum: b00a20c500ad8115b3b45f856a075670 (MD5) / Approved for entry into archive by Monique Sasaki (sayumi_sasaki@hotmail.com) on 2017-10-31T19:55:04Z (GMT) No. of bitstreams: 1 palomino_rlq_me_ilha.pdf: 2588668 bytes, checksum: b00a20c500ad8115b3b45f856a075670 (MD5) / Made available in DSpace on 2017-10-31T19:55:04Z (GMT). No. of bitstreams: 1 palomino_rlq_me_ilha.pdf: 2588668 bytes, checksum: b00a20c500ad8115b3b45f856a075670 (MD5) Previous issue date: 2017-09-01 / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / O efeito de diferentes condições para a produção de biomassa a partir do cultivo de microalgas em um fotobiorreator com iluminação com luz de LED foi estudado nesta dissertação. Com o objetivo de avaliar a produtividade de biomassa da espécie de microalga Scenedesmus sp, foram testadas quatro condições de cultivo no fotobiorreator, a saber: cultivo sem controle do fotoperíodo (iluminação durante todo o período de cultivo); cultivo com controle do fotoperíodo por um sistema eletrônico desenvolvido (12 horas de luz e 12 horas de escuro); cultivo com monitoramento da temperatura do ambiente a 20 °C; e, finalmente, cultivo com injeção de CO2 produzido por meio de um sistema de fermentação desenvolvido. O sistema eletrônico implementado é controlado por uma placa Arduino Uno, com as seguintes principais funções programadas no microcontrolador: controlar o fotoperíodo; monitorar a temperatura; e facilitar o acesso remoto aos dados dos sensores utilizados. O cultivo de microalgas da espécie Scenedesmus sp em fotobiorreator, durante 10 dias, mostrou ter uma produtividade modesta de 10,2 mg/l.dia, com um fotoperíodo de 24 horas de luz; de 13,5 mg/l.dia, com o controle do fotoperíodo de 12 horas de luz e 12 horas de escuro; de 17,8 mg/l.dia, com o monitoramento de temperatura em um ambiente com a temperatura controlada a 20 °C e controle do fotoperíodo de 12 horas de luz e 12 horas de escuro; e, finalmente, uma produtividade dentro dos níveis normais de 36,2 mg/l.dia, com o controle do fotoperíodo de 12 horas de luz e 12 horas de escuro e com a injeção do CO2 produzido durante aproximadamente 3 dos 10 dias de cultivo / The effect of different conditions for production of biomass from the microalgae culture in a photobioreactor with LED light was studied in this dissertation. In order to evaluate the biomass productivity of the Scenedesmus sp microalgae specie, four cultivation conditions were tested in the photobioreactor: uncontrolled photoperiod cultivation (lighting during the whole growing period); cultivation with control of the photoperiod by an electronic system developed (12 hours of light and 12 hours of darkness); cultivation with ambient temperature monitoring at 20 °C; and, finally, cultivation with controlled injection of CO2 produced by means of a developed fermentation system. The electronic system implemented is controlled by an Arduino Uno board with the following main functions programmed in the microcontroller: controlling of the photoperiod; temperature monitoring; and simplification of the remote access to the data of the sensors used. The microalgae cultivation of Scenedesmus sp species in photobioreactor for 10 days showed a modest productivity of 10.2 mg/l.day, with the control of photoperiod of 24 hours of light; 13.5 mg/l.day, with the controls of the photoperiod 12 hours of light and 12 hours of dark; 17.8 mg/l.day, with monitoring of temperature in an environment with a controlled temperature at 20 °C and photoperiod 12 hours of light and 12 hours of darkness; and, finally, a productivity with normal levels 36.2 mg/l.day, with the control of photoperiod of 12 hours of light and 12 hours of darkness and with the injection of the CO2 produced during approximately 3 of the 10 days of culture.