Elaboration and characterization of Fe1–xO thin films sputter deposited from magnetite target

Majority of the authors report elaboration of iron oxide thin films by reactive magnetron sputtering from an iron target with Ar–O2 gas mixture. Instead of using the reactive sputtering of a metallic target we report here the preparation of Fe1–xOthin films, directly sputtered froma magnetite target in a pure argon gas flow with a bias power applied. This oxide is generally obtained at very low partial oxygen pressure and high temperature.We showed that bias sputtering which can be controlled very easily can lead to reducing conditions during deposition of oxide thin film on simple glass substrates. The proportion of wustite was directly adjusted bymodifying the power of the substrate polarization. Atomic force microscopy was used to observe these nanostructured layers. Mössbauer measurements and electrical properties versus bias polarization and annealing temperature are also reported

Chiral symmetry breaking and stability of strangelets

We discuss the stability of strangelets by considering dynamical chiral symmetry breaking and confinement. We use a $U(3)_{L} \times U(3)_{R}$ symmetric Nambu--Jona-Lasinio model for chiral symmetry breaking supplemented by a boundary condition for confinement. It is shown that strangelets with baryon number $A < 2 \times 10^{3}$ can stably exist. For the observables, we obtain the masses and the charge-to-baryon number ratios of the strangelets. These quantities are compared with the observed data of the exotic particles.Comment: 10 pages, 9 figures, submitted to Physical Review

Embrapa Agrienergy oil palm research platform focuses in developing biotechnology and bioinformatics to assist breeding.

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Exploring American Oil Palm (Elaeis oleifera) genetic resources in Brazil through a combination of genetic and genomic approaches.

We started a project to explore American Oil Palm genetic resources through a combination of genetic and genomic approaches.Pôster W551

Can cosmic strangelets reach the earth?

The mechanism for the propagation of strangelets with low baryon number through the atmosphere of the Earth has been explored. It has been shown that under suitable initial conditions, such strangelets may indeed reach depths near mountain altitudes with mass numbers and charges close to the observed values in cosmic ray experiments.Comment: RevTeX text, with 3 encoded eps figures. To appear in Physical Review Letter

Extensão e organização da diversidade genética da coleção brasileira de germoplasma de Elaeis oleifera.

Objetivou-se neste trabalho avaliar a dissimilaridade de 206 acessos do Banco Ativo de Germoplasma de E. oleifera mantido pela Embrapa, como forma de investigar a extensão e organização da diversidade genética amostrada nesta coleção

Genetic and Proteomic Approaches to Identify Cancer Drug Targets

While target-based small-molecule discovery has taken centre-stage in the pharmaceutical industry, there are many cancer-promoting proteins not easily addressed with a traditional target-based screening approach. In order to address this problem, as well as to identify modulators of biological states in the absence of knowing the protein target of the state switch, alternative phenotypic screening approaches, such as gene expression-based and high-content imaging, have been developed. With this renewed interest in phenotypic screening, however, comes the challenge of identifying the binding protein target(s) of small-molecule hits. Emerging technologies have the potential to improve the process of target identification. In this review, we discuss the application of genomic (gene expression-based), genetic (short hairpin RNA and open reading frame screening), and proteomic approaches to protein target identification

Tecnologias poupa-terra 2021.

A adoção de um considerável número de tecnologias em várias frentes do processo produtivo tem permitido produzir altos volumes, com alta qualidade, de forma sustentável sob todos os aspectos, além de permitir que as florestas do País sejam protegidas tanto nas propriedades agropecuárias quanto em áreas nativas. A capacidade tecnológica para fazer gestão territorial, manejo integrado de pragas e doenças, utilizar sistemas integrados de produção que prolongam a vida dos solos, entre outros aspectos são os fatores garantidores do sucesso da agricultura brasileira. Assim, com as informações contidas neste documento, fica evidente que, devido à adoção de tecnologias desenvolvidas pela Embrapa e parceiros, garante-se à agricultura um efeito Poupa-Terra nas mais diversas cadeias do agro brasileiro. Os dados aqui apresentados são de grande valor, já que foram obtidos ao longo de décadas, o que trás robustez aos resultados divulgados neste documento.bitstream/item/227123/1/Tecnologias-poupa-terra-2021.pd

RNAi-mediated silencing of the myo-inositol-1-phosphate synthase gene (GmMIPS1) in transgenic soybean inhibited seed development and reduced phytate content.

Made available in DSpace on 2018-05-31T00:34:36Z (GMT). No. of bitstreams: 1 ID273951.pdf: 364152 bytes, checksum: c18c2d707c0c7df8f411b9f94605a2c3 (MD5) Previous issue date: 2006-10-1