Avaliação do caldo de sorgo sacarino em diferentes aplicações de herbicidas.

Na cultura do sorgo sacarino, a utilização de herbicidas se mostra como uma ferramenta fitossanitária de extrema importância na condução da cultura. Entretanto, um dos principais problemas encontrados na cultura do sorgo sacarino é o manejo eficiente de plantas daninhas. O objetivo deste trabalho foi verificar os efeitos no peso do caldo e volume do caldo de plantas de sorgo sacarino submetidas a diferentes manejos de plantas daninhas, no Norte de Minas Gerais. O experimento foi conduzido na Fazenda Experimental da Embrapa Milho e Sorgo, localizada no município de Nova Porteirinha, MG. Os tratamentos foram dispostos em esquema de parcelas subdivididas. Nas parcelas foram alocados os cultivares de sorgo sacarino (BRS 501, BRS 504, BRS 506, BRS 508, BRS 509 e BRS 511), enquanto nas subparcelas foram alocados os tipos de manejo de plantas daninhas: 2,4-D (1209 g i.a ha-l), linuron (900 g i.a ha-l), atrazine (lOOOgi.a ha-1), bentazon (900 g i.a ha-l) e tembotrione (100 g i.a ha-1), além de tratamentos adicionais com capina (TCC) e sem capina (TSC). O delineamento experimental utilizado foi o de blocos casualizados, com quatro repetições. O herbicida Bentazon foi o mais positivo com relação à seletividade para as variedades de sorgo

Caracterização dos sistemas de produção da agricultura familiar de Paragominas-PA: a pecuária e propostas de desenvolvimento.

Caracterização da região de estudo. Diagnóstico. Caracterização dos sistemas agrícolas.bitstream/item/57599/1/Oriental-Doc5.pd

Sistema de produção de leite em Terra Alta, Pará.

bitstream/item/60880/1/CPATU-Doc103.pd

Ganho de peso de bubalinos sob três taxas de lotação em pastagem cultivada na ilha de Marajó.

bitstream/item/32694/1/CPATU-BP139.pd

Search for CP violation in D0 and D+ decays

A high statistics sample of photoproduced charm particles from the FOCUS (E831) experiment at Fermilab has been used to search for CP violation in the Cabibbo suppressed decay modes D+ to K-K+pi+, D0 to K-K+ and D0 to pi-pi+. We have measured the following CP asymmetry parameters: A_CP(K-K+pi+) = +0.006 +/- 0.011 +/- 0.005, A_CP(K-K+) = -0.001 +/- 0.022 +/- 0.015 and A_CP(pi-pi+) = +0.048 +/- 0.039 +/- 0.025 where the first error is statistical and the second error is systematic. These asymmetries are consistent with zero with smaller errors than previous measurements.Comment: 12 pages, 4 figure

Structural variants exhibit widespread allelic heterogeneity and shape variation in complex traits

This work is licensed under a Creative Commons Attribution 4.0 International License.It has been hypothesized that individually-rare hidden structural variants (SVs) could account for a significant fraction of variation in complex traits. Here we identified more than 20,000 euchromatic SVs from 14 Drosophila melanogaster genome assemblies, of which ~40% are invisible to high specificity short-read genotyping approaches. SVs are common, with 31.5% of diploid individuals harboring a SV in genes larger than 5kb, and 24% harboring multiple SVs in genes larger than 10kb. SV minor allele frequencies are rarer than amino acid polymorphisms, suggesting that SVs are more deleterious. We show that a number of functionally important genes harbor previously hidden structural variants likely to affect complex phenotypes. Furthermore, SVs are overrepresented in candidate genes associated with quantitative trait loci mapped using the Drosophila Synthetic Population Resource. We conclude that SVs are ubiquitous, frequently constitute a heterogeneous allelic series, and can act as rare alleles of large effect

Microcalcifications in breast cancer: novel insights into the molecular mechanism and functional consequence of mammary mineralisation.

BACKGROUND: Mammographic microcalcifications represent one of the most reliable features of nonpalpable breast cancer yet remain largely unexplored and poorly understood. METHODS: We report a novel model to investigate the in vitro mineralisation potential of a panel of mammary cell lines. Primary mammary tumours were produced by implanting tumourigenic cells into the mammary fat pads of female BALB/c mice. RESULTS: Hydroxyapatite (HA) was deposited only by the tumourigenic cell lines, indicating mineralisation potential may be associated with cell phenotype in this in vitro model. We propose a mechanism for mammary mineralisation, which suggests that the balance between enhancers and inhibitors of physiological mineralisation are disrupted. Inhibition of alkaline phosphatase and phosphate transport prevented mineralisation, demonstrating that mineralisation is an active cell-mediated process. Hydroxyapatite was found to enhance in vitro tumour cell migration, while calcium oxalate had no effect, highlighting potential consequences of calcium deposition. In addition, HA was also deposited in primary mammary tumours produced by implanting the tumourigenic cells into the mammary fat pads of female BALB/c mice. CONCLUSION: This work indicates that formation of mammary HA is a cell-specific regulated process, which creates an osteomimetic niche potentially enhancing breast tumour progression. Our findings point to the cells mineralisation potential and the microenvironment regulating it, as a significant feature of breast tumour development