EFEITOS DA BETA-ALANINA DURANTE A PRÁTICA DE EXERCÍCIOS FÍSICOS – REVISÃO DA LITERATURA

Introdução – A beta-alanina é um aminoácido com papel fundamental no metabolismo muscular. Ela é encontrada naturalmente no organismo humano, mas também pode ser consumida através de suplementação.  Metodologia – Esse estudo de revisão da literatura foi desenvolvido por busca de artigos indexados, estudos longitudinais, transversais e ensaios clínicos, no qual foram encontrados 80 artigos no período de 2004 a 2022. Resultados – Foram encontrados um total de 80 artigos sendo 30 da base de dados PubMed MEDLINE, 20 SciELO, 18 CDSR e 12 BVS sendo que um total de 6 estudos foram selecionados para a revisão sistemática. Conclusão – Suplementação  de beta-alanina pode ser uma estratégia eficaz para melhorar o desempenho atlético. Ela aumenta os níveis de carnosina nos músculos, retardando a fadiga muscular, reduzindo o acúmulo de ácido lático e protegendo as células musculares contra danos oxidativos. Palavras-chave: BETA ALANINA.CARNOSINA.EXERCÍCIOS

IANOS: Innovative energy storage solutions for the decarbonization of geographical islands

Geographical Islands experience harsh climate conditions resulting in diminished reliability of their grid. IANOS, a project funded by the European Commission, is developing technologies to overcome these challenges and allow for the secure decarbonisation of islands. The project will deploy and use storage technologies in two islands: Terceira, in Portugal, and Ameland, in the Netherlands. These include a 100kW/3kWh flywheel; thirty-five 2kW private fuel cells; sixteen 3kW/3kWh electrochemical batteries; two large-scale Battery Energy Storage System (BESS); a biobased saline battery of 120kWh; and twenty-four heat batteries of 3.5kWhth. These technologies, managed by an intelligent Virtual Power Plant (iVPP) also developed within the project, will be used for the maximisation of demand-side self-consumption, as well as for the provision of ancillary services, targeting the maximum economic and environmental benefit for the population and the island’s grid. In this paper, the specifications of each storage technology are described, as well as the impacts on the grid stability. The role of storage technologies in the decarbonisation of geographical islands will be emphasized

Alquimia, Ocultismo, Maçonaria: o ouro e o simbolismo hermético dos cadinhos (Séculos XVIII e XIX)

Este artigo apresenta a arqueologia das enigmáticas marcas impressas na base de cadinhos dos séculos XVIII e XIX recuperados nas escavações da Casa da Moeda do Rio de Janeiro, na década de 1980, e a explanação do seu significado simbólico à luz da alquimia, do ocultismo e da Maçonaria. Espraiando-se extraordinariamente mundo afora através de uma bem-sucedida estratégia de comunicação visual, a Maçonaria utilizou símbolos herméticos para a difusão de seus princípios nos mais diferentes suportes. Aparentemente estamos diante de um sinal de reconhecimento maçônico, o sinal exterior de uma organização oculta, só partilhado por iniciados e incompreensível para os demais, que contribuiu para difundir veladamente a doutrina maçônica por diferentes pontos do globo

Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences

The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & Nemésio 2007; Donegan 2008, 2009; Nemésio 2009a–b; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on 18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based researchers who signed it in the short time span from 20 September to 6 October 2016

Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

Differential cross section measurements for the production of a W boson in association with jets in proton–proton collisions at √s = 7 TeV

Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse momenta (pT) and pseudorapidities of the four leading jets, the scalar sum of jet transverse momenta (HT), and the difference in azimuthal angle between the directions of each jet and the muon. The data sample of pp collisions at a centre-of-mass energy of 7 TeV was collected with the CMS detector at the LHC and corresponds to an integrated luminosity of 5.0 fb[superscript −1]. The measured cross sections are compared to predictions from Monte Carlo generators, MadGraph + pythia and sherpa, and to next-to-leading-order calculations from BlackHat + sherpa. The differential cross sections are found to be in agreement with the predictions, apart from the pT distributions of the leading jets at high pT values, the distributions of the HT at high-HT and low jet multiplicity, and the distribution of the difference in azimuthal angle between the leading jet and the muon at low values.United States. Dept. of EnergyNational Science Foundation (U.S.)Alfred P. Sloan Foundatio