Electroweak Tests at Beta-beams

We explore the possibility of measuring the Weinberg angle from (anti)neutrino-electron scattering using low energy beta beams, a method that produces single flavour neutrino beams from the beta-decay of boosted radioactive ions. We study how the sensitivity of a possible measurement depends on the intensity of the ion beam and on a combination of different Lorentz boosts of the ions.Comment: 10 pages, 6 figure

Vibrations on pulse tube based Dry Dilution Refrigerators for low noise measurements

Dry Dilution Refrigerators (DDR) based on pulse tube cryo-coolers have started to replace Wet Dilution Refrigerators (WDR) due to the ease and low cost of operation. However these advantages come at the cost of increased vibrations, induced by the pulse tube. In this work, we present the vibration measurements performed on three different commercial DDRs. We describe in detail the vibration measurement system we assembled, based on commercial accelerometers, conditioner and DAQ, and examined the effects of the various damping solutions utilized on three different DDRs, both in the low and high frequency regions. Finally, we ran low temperature, pseudo-massive (30 and 250 g) germanium bolometers in the best vibration-performing system under study and report on the results

Low-energy neutrinos at off-axis from a standard beta-beam

We discuss a scenario to extract up to 150 MeV neutrinos at a standard beta-beam facility using one and two detectors off-axis. In particular we show that the high-energy component of the neutrino fluxes can be subtracted through a specific combination of the response of two off-axis detectors. A systematic analysis of the neutrino fluxes using different detector geometries is presented, as well as a comparison with the expected fluxes at a low-energy beta-beam facility. The presented option could offer an alternative way to perform low-energy neutrino experiments.Comment: 9 pages, 6 figure

Mexico's renewable energy innovation system: Geothermal and solar photovoltaics case study

This paper evaluates the impact of changes in Mexican energy policies on the Mexican innovation systems ability to support renewable energy technologies, through a comparative case study on geothermal and solar photovoltaic technologies. The study examines the effectiveness of government policy in each case by exploring how changes in policy have affected the development of their respective innovation systems. The analysis is facilitated by a technology innovation system framework. The main source of data is primary data from an online survey of 61 experienced energy experts in Mexico in 2019, complemented with desktop research. Results suggest that changes in government priorities have a strong influence on the development of these two technologies. The development of these technologies in Mexico is determined by their innovation systems resilience and adaptability to the changing policy landscape. Policy instruments that encourage knowledge formation serve as critical for the continued development of renewable energy technologies in Mexico. This study contributes to the literature on innovation systems in Mexico, on comparing two renewable energy technologies, and on developing countries policy and innovation contexts

Marcadores microssatélites para monitorar a eficiência da estratégia de conservação de Passiflora edulis Sims.

Um Banco Ativo de Germoplasma (BAG) tem o importante papel na preservação da variabilidade genética. No entanto, se a diversidade interespecífica, intraespecífica e intra-acesso no BAG não forem preservadas ao longo do tempo, ele não atingirá a finalidade proposta.Em paralelo aconteceram também os seguintes eventos: V Seminário de Pesquisa do Recôncavo da Bahia; V Seminário Estudantil de Pesquisa da UFRB; V Seminário da Pós-Graduação da UFRB; II Seminário Regional de Pesquisa da EBDA; 5ª Jornada Científica da Embrapa Mandioca e Fruticultura; VIII Seminário Estudantil de Pesquisa e Extensão da FAMAM; Semana de Ciência, Tecnologia e Inovação no Agronegócio; Fórum de Gestores de Iniciação Científica e Tecnológica da Bahia; II Simpósio Baiano de Defesa Agropecuária; I Semana de Educação Tutorial da UFRB

Modelagem do nível superficial e vulnerabilidade dos aquíferos de Sergipe.

A aplicação de sistemas de informações geográficas é uma ferramenta que permite a análise das características ambientais a fim de possibilitar a sua modelagem e proporcionar a gestão ambiental. Esse estudo objetivou criar um modelo espacial do nível superficial do lençol freático para o Estado de Sergipe por meio da utilização de sistemas de informação geográfica, analisando o parâmetro de profundidade do método GOD a fim de servir como base para analisar a vulnerabilidade dos aquíferos quanto à sua contaminação. Para a execução do trabalho foi utilizado o ArcGIS e os dados do Atlas Digital de Recursos Hídricos de Sergipe. Foi criado o Modelo Digital de Elevação referente às profundidades dos poços cadastrados e da superfície do terreno, feita a subtração, foi obtida a altimetria dos aquíferos e adotado o método GOD para indicar o parâmetro de profundidade e o grau de vulnerabilidade do aquífero. De acordo com os resultados, verificou-se que grande parte dos aquíferos encontra-se em profundidades acima de 50 m, o que indica um menor risco de contaminação e que existe um padrão quanto à altimetria do nível freático do litoral para o interior do Estado

Ionospheric response to the 2009 sudden stratospheric warming over the equatorial, low, and middle latitudes in the South American sector

The present study investigates the ionospheric total electron content (TEC) and F-layer response in the Southern Hemisphere equatorial, low, and middle latitudes due to major sudden stratospheric warming (SSW) event, which took place during January-February 2009 in the Northern Hemisphere. In this study, using 17 ground-based dual frequency GPS stations and two ionosonde stations spanning latitudes from 2.8°N to 53.8°S, longitudes from 36.7°W to 67.8°W over the South American sector, it is observed that the ionosphere was significantly disturbed by the SSW event from the equator to the midlatitudes. During day of year 26 and 27 at 14:00 UT, the TEC was two times larger than that observed during average quiet days. The vertical TEC at all 17 GPS and two ionosonde stations shows significant deviations lasting for several days after the SSW temperature peak. Using one GPS station located at Rio Grande (53.8°S, 67.8°W, midlatitude South America sector), it is reported for the first time that the midlatitude in the Southern Hemisphere was disturbed by the SSW event in the Northern Hemisphere.Fil: Fagundes, P. R.. Universidade do Vale do Paraíba; BrasilFil: Goncharenko, L. P.. Massachusetts Institute of Technology; Estados UnidosFil: De Abreu, A. J.. Universidade do Vale do Paraíba; BrasilFil: Venkatesh, K.. Universidade do Vale do Paraíba; BrasilFil: Pezzopane, M.. Istituto Nazionale Di Geofisica E Vulcanologia; ItaliaFil: De Jesus, R.. Universidade do Vale do Paraíba; BrasilFil: Gende, Mauricio Alfredo. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Coster, A. J.. Massachusetts Institute of Technology; Estados UnidosFil: Pillat, V. G.. Universidade do Vale do Paraíba; Brasi

Budheting and accounting reforms within the public financial mangement framework: the Portuguese case

This chapter discusses the role of budgetary and accounting systems within the Public Financial Management (PFM) framework. Additionally, it describes the reforms nowadays taking place in Portugal, namely taking into consideration new budgetary and accounting systems starting implementation, explaining how they are included in a broader reform of the PFM structure. PFM implies governments to use integrated systems to allocate funds and control spending execution, involving a wide approach, including policies design and internal and external auditing assessment systems. Also accounting reforms are essential to achieve PFM purposes, namely applying accrual basis to prepare and report financial statements under the international accounting standards approach (Lawson, 2015). In Portugal, in the latter years, within the public sector, there has been a great fragmentation of accounting and reporting systems applied to different entities, raising inconsistencies and creating difficulties when trying to assess the Whole of Government financial condition. In this context, the Portuguese government, under strong recommendations of the loaners (because of the financial assistance through Troika), started a set of PFM reforms, including changing the existing public sector accounting system by adopting the International Public Sector Accounting Standards (IPSAS) as the benchmark (Nogueira et al., 2017). Accordingly, in 2015 relevant legislation was issued: the new Budgetary Framework Law (LEO – Law 151/2015) and the new System of Accounting Standards for Public Administrations (SNC-AP – Law-decree 192/2015). In 2016 a unit to assure the implementation of these new budgetary and accounting systems was created, designated as UniLEO. According to Viana (2017), the mission of this unit configures a true PFM reform. Hereafter, the chapter is organised in four sections. Section 2 addresses the harmonization problems related to accounting reforms in financial accounting and their inclusion in a broader reform process under PFM objectives. Section 3 explains the benefits of integrating budgetary and financial accounting innovations in a broader PFM reform, also highlighting how PFM systems outputs could be used to change the EU convergence criteria framework. The Portuguese PFM reforms, including budgeting and accounting changes, presently being implemented, are described in Section 4. In Section 5 some final marks and conclusions are synthesised, highlighting the Portuguese PFM reforms as a reference at an international level.info:eu-repo/semantics/acceptedVersio