Cultivo agropastoril de gergelim, forrageiras e capins para suporte alimentar de ruminantes no Semiárido Piauiense.

Objetivando analisar a produção de biomassa dos consórcios gergelim e forrageiras com capins e a qualidade nutricional das forragens produzidas a partir destas culturas, foram conduzidos experimentos, durante dois ciclos de cultivo (2017 - irrigado; 2018 - em sequeiro), em Oeiras, PI. Para biomassa, o delineamento foi em blocos casualizados com quatro repetições, contendo seis tratamentos (consórcios gergelim e forrageiras com capins) e, para matéria seca, proteína bruta, digestibilidade em detergente neutro e ácido, cálcio e fósforo, inteiramente casualizados, com três repetições e nove tratamentos (forragens produzidas a partir destas culturas). A produção de biomassa se comportou nos quantitativos ótimos para sorgo e milho, excedendo os quantitativos mínimos do gergelim em condições irrigadas, mas ficando abaixo do bom quantitativo de todas as culturas quando em condições de sequeiro; e, a maioria das forragens classificou-se como sendo de boa qualidade e digestibilidade, destacando-se o maior teor proteico, de cálcio e de fósforo nas silagens contendo gergelim.bitstream/item/207846/1/BOL101.pd

Design, construction and operation of the ProtoDUNE-SP Liquid Argon TPC

The ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber (LArTPC) that was constructed and operated in the CERN North Area at the end of the H4 beamline. This detector is a prototype for the first far detector module of the Deep Underground Neutrino Experiment (DUNE), which will be constructed at the Sandford Underground Research Facility (SURF) in Lead, South Dakota, USA. The ProtoDUNE-SP detector incorporates full-size components as designed for DUNE and has an active volume of $7\times 6\times 7.2$~m$^3$. The H4 beam delivers incident particles with well-measured momenta and high-purity particle identification. ProtoDUNE-SP's successful operation between 2018 and 2020 demonstrates the effectiveness of the single-phase far detector design. This paper describes the design, construction, assembly and operation of the detector components

Searching for solar KDAR with DUNE

Abstract: The observation of 236 MeV muon neutrinos from kaon-decay-at-rest (KDAR) originating in the core of the Sun would provide a unique signature of dark matter annihilation. Since excellent angle and energy reconstruction are necessary to detect this monoenergetic, directional neutrino flux, DUNE with its vast volume and reconstruction capabilities, is a promising candidate for a KDAR neutrino search. In this work, we evaluate the proposed KDAR neutrino search strategies by realistically modeling both neutrino-nucleus interactions and the response of DUNE. We find that, although reconstruction of the neutrino energy and direction is difficult with current techniques in the relevant energy range, the superb energy resolution, angular resolution, and particle identification offered by DUNE can still permit great signal/background discrimination. Moreover, there are non-standard scenarios in which searches at DUNE for KDAR in the Sun can probe dark matter interactions