2,547 research outputs found
Genetic control of traits related to phosphorus use efficiency in tropical maize.
Knowing the inheritance of traits is essential to establish selection strategies in breeding programs. The aim of this study was to determine the genetic control of traits related to the phosphorus use efficiency in maize. A total of 280 progenies were developed according to design III, which were evaluated in the field under high and low phosphorus (P) availability. The genetic variance components were estimated for the agronomic traits and indices that define P use efficiency. The results indicated that the additive and dominance effects were important in explaining the genetic variability for the flowering time, grain yield and P efficiency indices. However, dominance effects prevailed, indicating that breeding efforts should be made to develop hybrids exploiting the heterosis for traits related to P use efficiency
Contribuições parafiscais e o sistema "S"
Orientador: Betina Treiger GrupenmacherMonografia (graduação) - Universidade Federal do Paraná,Setor de Ciências Jurídicas, Curso de Graduação em DireitoO presente trabalho está dividido em duas partes: na primeira analisa o ambiente histórico de criação e desenvolvimento das entidades que compõem o chamado Sistema "S" e seu ambiente administrativo para, na segunda, analisar os aspectos relacionados ao Direito Tributário relativo a sua principal fonte de financiamento: as Contribuições sociais e de intervenção no domínio econômico. São tratadas questões relacionadas com as especificidades jurídicas relativas aos entes paraestatais chamados de entes de cooperação, que são criados por lei, dotadas de personalidade jurídica privada, sem subordinação ao Poder Executivo Federal,para prestar serviços de interesse público com financiamento disponibilizado por fomento do poder público com a criação de Contribuições Parafiscais de arrecadação compulsória cuja aplicação é diretamente vinculada à finalidade das atividades prestadas pelos entes paraestatais, pressuposto de sua criação. No âmbito tributário, são tratadas questões relacionadas com a definição de tributo, a análise das espécies tributárias, para posterior caracterização das espécies de Contribuições, com ênfase àquelas financiadoras dos entes paraestatais que compões o Sistema "S"
Ensaio de proficiência de laboratórios de nutrição animal (Relatório anual Ano 8 - 2005)
bitstream/item/33441/1/Documentos64.pdfISSN 1980-684
Newborn skin reflection: Proof of concept for a new approach for predicting gestational age at birth. A cross-sectional study
Current methods to assess the gestational age during prenatal care or at
birth are a global challenge. Disadvantages, such as low accessibility, high
costs, and imprecision of clinical tests and ultrasonography measurements, may
compromise health decisions at birth, based on the gestational age. Newborns
organs and tissues can indirectly indicate their physical maturity, and we
hypothesized that evolutionary changes in their skin, detected using an
optoelectronic device meter, may aid in estimating the gestational age. This
study analyzed the feasibility of using newborn skin reflectance to estimate
the gestational age at birth noninvasively. A cross-sectional study evaluated
the skin reflectance of selected infants, preferably premature, at birth. The
first-trimester ultrasound was the reference for gestational age. A prototype
of a new noninvasive optoelectronic device measured the backscattering of light
from the skin, using a light emitting diode at wavelengths of 470 nm, 575 nm,
and 630 nm. Univariate and multivariate regression analysis models were
employed to predict gestational age, combining skin reflectance with clinical
variables for gestational age estimation. The gestational age at birth of 115
newborns from 24.1 to 41.8 weeks of gestation correlated with the light at 630
nm wavelength reflectance 3.3 mm/6.5 mm ratio distant of the sensor, at the
forearm and sole . The best-combined variables to predict the gold standard
gestational age at birth was the skin reflectance at wavelengths of 630 nm and
470 nm in combination with birth weight, phototherapy, and adjusted to include
incubator stay, and sex. The main limitation of the study is that it was very
specific to the premature population we studied and needs to be studied in a
broader spectrum of newborns
Information Design and the COVID-19 pandemic: What is the contribution to health and citizenship?
Multiple and various graphic design pieces were created around the world for digital media during the COVID-19 pandemic. These graphic design pieces were meant to disseminate information about the disease caused by the new Corona Virus SARS-CoV-2 to inform people on how to better protect themselves. Information Design uses guidelines and principles that would inform the design of useful graphic pieces to combat the pandemic and help the people to address their health needs for citizenship rights. This research analyzed multiple pieces made available by Fiocruz (a Brazilian health institution). The case study presented in this paper explores the piece with information explaining how soap acts on the virus and proposes a new design to improve its quality
Los sistemas de producción de rumiantes menores en el Semiárido brasileño y sus limitantes productivas.
Comercialización de productos; Sistemas de producción; Sistemas de produccíon y comercialización de leche de cabra; Los aspectos técnicos y econômicos de la produccíon de leche de cabra; Sistemas de produccíon de carne caprina y ovina; Comercialización; Los aspectos técnicos y econômicos de la producción de carne caprina y ovina en el Semiárido del Nordeste: manejo del pastoreo y de la alimentacción; Razas predominantes en la producción de rumiantes menores en el Semiárido; Prácticas sanitarias; amenjo reproductivo. Tabla 1. Problaciones ovinas e caprinas por estado en 2009, participación de la poplación de cada estado en el rebaño nacional y cambios en la población entre 1990 e 2009; Tabla 2. Caracterisitcas de los criadores de caprinos y ovinos en el sertión de Bahía por tipos familias (n=549); Tabla 3. Caracterisitcas de los productores caprinos y ovinos del Cariri de Paraíba, Brasil; Tabla 4. Variables productivas importantes en la produción lechera en sistemas de producción de leche de cabra en diferentes estados brasileños; Tabla 5. Promedios de indicadores productivos relacionados con la produccíon de leche de cabras en los estados da Bahia y Rio Grande do Norte; Tabal 6. Porcentajes de diferentes especies de rumiantes e combinaciones de especies que conforman los sistemas de producción en Piauí, en el sertón de San Francisco, Bahía y el Cariri, Paraíba; Tabla 7. áreas y forrajeras cultivadas por productores caprinos y ovinos en el sertón de Bahía; Tabla 8. Prácticas alimenticias y estrategias usadas por los productores del Cariri de Paraíba en la época seca
Experimental and Numerical Investigation of Post-Flutter Limit Cycle Oscillations on a Cantilevered Flat Plate
Futuristic aircraft designs and novel aircraft such as High Altitude Long Endurance (HALE) involve a higher level of structural flexibility than in conventional aircraft. Even at present, the trends in the aviation industry are to increase wing length (to reduce induced drag) and maxi- mize use of composites, which lead to increased structural flexibility. This necessitates a rethink of conventional (linear) aeroelastic analysis, since the increased flexibility results in coupling between the flight dynamic and aeroelastic dynamics, and consequently, limit-cycle oscillations of the structure. In this paper, a new three-dimensional low-order model for unsteady aerody- namics that accounts for large oscillation amplitudes and nonplanar wakes is developed. An experiment with a cantilevered flat plate at low Reynolds number is set up and used to validate the low-order model, as well as to study post-flutter limit-cycle oscillations. Results from the low-order model are promising, but show that aerodynamic nonlinearities such as flow sepa- ration and leading-edge vortex shedding must also be modeled in order to predict all possible limit-cycle oscillations of the aeroelastic system
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