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Biblioteca(s):  Embrapa Arroz e Feijão.
Data corrente:  15/02/2022
Data da última atualização:  16/02/2022
Tipo da produção científica:  Artigo em Periódico Indexado
Autoria:  MORAIS, P. A. de O.; SOUZA, D. M. de; MADARI, B. E.; OLIVEIRA, A. E. de.
Afiliação:  PEDRO AUGUSTO DE OLIVEIRA MORAIS, UFG; DIEGO MENDES DE SOUZA, CNPAF; BEATA EMOKE MADARI, CNPAF; ANSELMO ELCANA DE OLIVEIRA, UFG.
Título:  Predicting silicon, aluminum, and iron oxides contents in soil using computer vision and infrared.
Ano de publicação:  2021
Fonte/Imprenta:  Microchemical Journal, v. 170, 106669, Nov. 2021.
ISSN:  0026-265X
DOI:  https://doi.org/10.1016/j.microc.2021.106669
Idioma:  Inglês
Conteúdo:  Silicon, aluminum, and iron oxides are very abundant in soil. Their quantification is important for soil classification, which is a relevant information for the sustainable use and management of soils. In soil laboratories the determination of these oxides, using standard methods, is destructive, costly, laborious, and time consuming. This article presents two analytical methods to quantify SiO2, Al2O3, and Fe2O3 in soil samples using computer vision (COMPVIS) and mid-infrared spectroscopy (MIR). These two methods were developed using 52 soil samples from four states of Brazil. Digital images and MIR spectra were correlated with oxides contents quantified by atomic absorption spectroscopy (AAS) after acid digestion using three multivariate calibration methods: PLS, SPA-MLR, and LS-SVM. This the first time that soil image data has been correlated to silicon and aluminum oxides and the proposed method found excellent correlation values ( ranging from 0.95 to 0.99). With the exception of SiO2, MIR resulted in similar predictions to the COMPVIS method?s. LS-SVM presented higher than 0.95 for all oxides estimates. The developed analyses are low cost, fast, and environmentally sustainables.
Palavras-Chave:  MIA; SVM.
Thesagro:  Química do Solo.
Thesaurus Nal:  Aluminum; Environmental sustainability; Green chemistry; Hematite; Iron oxides; Silicon; Soil chemistry.
Categoria do assunto:  X Pesquisa, Tecnologia e Engenharia
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Arroz e Feijão (CNPAF)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status URL
CNPAF36279 - 1UPCAP - DD20212021
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Biblioteca(s):  Embrapa Caprinos e Ovinos.
Data corrente:  05/09/2016
Data da última atualização:  23/09/2019
Tipo da produção científica:  Resumo em Anais de Congresso
Autoria:  ALVES, N. G.; JUNQUEIRA, F. B.; ASCARI, I. J.; SOUZA, J. C.; CAMPOS, J. P. A.; FARIA, L. R.; SILVA, D. R.; PAULA, F. A. P.; LIMA, R. R. de; FONSECA, J. F. da.
Afiliação:  JEFERSON FERREIRA DA FONSECA, CNPC.
Título:  Restricted intake and lipid inclusion in Santa Inês ewe lambs diet: age, weight and progesterone concentration at first ovulation.
Ano de publicação:  2016
Fonte/Imprenta:  Animal Reproduction, v. 13, n. 3, p. 521, Jul./Sept. 2016.
Idioma:  Inglês
Notas:  Proceedings of the 30th Annual Meeting of the Brazilian Embryo Technology Society (SBTE); Foz do Iguaçu, PR, Brazil, August 25th to 27th, 2016, and 32nd Meeting of the European Embryo Transfer Association (AETE); Barcelona, Spain, September 9th and 10th, 2016.
Conteúdo:  Abstract: The age at first ovulation is influenced by several factors, and nutrition has an essential role on it. Lipids provide essential fatty acids that are positively associated to reproductive aspects. The aims of this study were to evaluate the effects of lipid inclusion and restricted intake on age and weight at the first ovulation and the serum progesterone (P4) concentration at the sixth day after first ovulation. Thirty-five Santa Inês ewe lambs with initial body weight (BW) of 21.5 ± 0.3 kg and age of 91.6 ± 1.4 days were used. Animals were blocked according to initial BW and distributed to one of four treatments: animals receiving diet without lipid inclusion (3.5% ether extract ? EE), ad libitum intake (WLI-ALI, control group, n = 9); diet without lipid inclusion and restricted intake (WLI-RI, n = 9); lipid inclusion diet, represented by toasted and broken soybean (9.8% EE), ad libitum intake (LIP-ALI, n = 8); and lipid inclusion diet and restricted intake (LIP-RI, n = 9). Ewe lambs subjected to restricted intake had 84% of the diet offered to those in ad libitum treatments. The individual daily dry matter intake (DMI) and EE intake (EEI) were measured and the animals were weekly weighted until 35 kg BW. For P4 analysis, blood samples were collected once a week after the animals reached 25 kg BW and twice a week after 30 kg until 35 kg BW. Ovulation was estimated to occur on the sixth day before P4 ?1 ng/mL. DMI, EEI, average daily weight gain until first ovulat... Mostrar Tudo
Palavras-Chave:  Crude fat; Raça Santa Inês; Supplementary feeding.
Thesagro:  Gordura; Lipídio; Ovelha; Ovino; Proteína Bruta; Reprodução animal; Suplemento alimentar; Suplemento energético.
Thesaurus NAL:  Ewes; Sheep.
Categoria do assunto:  L Ciência Animal e Produtos de Origem Animal
URL:  https://ainfo.cnptia.embrapa.br/digital/bitstream/item/147105/1/CNPC-2016-Restricted.pdf
Marc:  Mostrar Marc Completo
Registro original:  Embrapa Caprinos e Ovinos (CNPC)
Biblioteca ID Origem Tipo/Formato Classificação Cutter Registro Volume Status
CNPC31421 - 1UPCRA - DD
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