Preliminary characterization of Psidium germplasm in different Brazilian ecogeographic regions.

O objetivo deste trabalho foi caracterizar 119 acessos de goiabeira e 40 acessos de araçazeiro identificados em 35 ecorregiões brasileiras, de acordo com descritores da International Union for the Protection of New Varieties of Plants (UPOV). A maioria dos acessos de araçazeiro apresentou grandes espaços entre as nervuras da folha, enquanto os de goiabeira apresentaram espaços pequenos. Os frutos de araçazeiro foram classificados como pequenos, enquanto os de goiabeira apresentaram tamanho de médio a grande. A maioria dos acessos de araçazeiro (91%) apresentou cor branca para a polpa do fruto, enquanto 58% dos de goiabeira apresentaram cor de rosa-claro a rosa-escuro. As diferenças nos frutos entre Psidium selvagens e domesticados indicam que os frutos foram os mais alterados pela seleção artificial

Thermal stability and decomposition kinetics of NdNiO3− δ at 1 bar of O2

Despite the interest in rare-earth nickelates for applications, their processing under 1 bar of oxygen pressure is still challenging. In this work, we report the co-precipitation synthesis, thermal stability and thermally driven decomposition of NdNiO3 phase, in order to determine the synthesis parameters towards a pure perovskite phase. We concluded that using a 1% molar excess of Nd during preparation and posterior annealing at around 900 °C at 1 bar of O2 yields an almost pure NdNiO3−δ phase (with a hexagonal Nd2O3 phase below 0.6% molar), with an oxygen deficiency of δ = 0.082 ± 0.001. The decomposition of the NdNiO3−δ phase into Nd4Ni3O10 and NiO was found to start above 900 °C. On further heating, above 1050 °C, the Nd4Ni3O10 decomposes into Nd2NiO4 and NiO phases. Structural parameters and Raman spectra are provided for the NdNiO3, Nd4Ni3O10 and Nd2NiO4 compounds.The authors would like to acknowledge Fundacao para a Ciencia e Tecnologia (FCT) through projects NORTE/01/0145/FEDER/028538, CERN/FIS-PAR/0005/2017, CERN/FIS-TEC/0003/2019, PTDC/FIS-MAC/29454/2017 and when appropriate co-financed by FEDER under PT2020 Partnership Agreement: CQVR: UIDB/QUI/00616/2020; IFIMUP-IN: Norte-070124-FEDER-000070; NECL: NORTE-01-0145-FEDER-022096, UID/NAN/50024/2019. P. Machado and J. Oliveira acknowledge FCT through Ph.D. Grants SFRH/BD/108509/2015 and SFRH/BD/146886/2019 respectively. A special acknowledgment is made to CEMUP for XPS measurements

Desempenho de variedades de milho: ano agrícola 2008/09.

bitstream/item/26808/1/CT-182.pd

Phenylketonuria in Portugal: Genotype-Phenotype Correlations Using Molecular, Biochemical, and Haplotypic Analyses

The impairment of the hepatic enzyme phenylalanine hydroxylase (PAH) causes elevation of phenylalanine levels in blood and other body fluids resulting in the most common inborn error of amino acid metabolism (phenylketonuria). Persistently high levels of phenylalanine lead to irreversible damage to the nervous system. Therefore, early diagnosis of the affected individuals is important, as it can prevent clinical manifestations of the disease.info:eu-repo/semantics/publishedVersio

Adaptabilidade e estabilidade de híbridos de milho em 35 ambientes.

O objetivo deste trabalho foi avaliar a adaptabilidade e estabilidade de híbridos de milho em varias regiões do país

BRS 1055: híbrido simples de milho.

O híbrido simples de milho BRS 1055 foi desenvolvido para lavouras de alto/médio investimento e históricos de alta/média produtividade.bitstream/CNPAF-2010/29881/1/Com-176.pd