2,899 research outputs found
Produção de milho e sorgo em várzea.
ECOFISIOLOGIA E FENOLOGIA DAS CULTURAS DO MILHO E DO SORGO (Paulo Regis Ferreira da Silva; Gilber Argenta pag 7-18); NUTRIÇÃO, CORREÇÃO DO SOLO E ADUBAÇÃO (Walkyria Bueno Scivittaro pag 19-26); SISTEMAS DE CULTIVO DE MILHO EM VÁRZEA - PLANTIO DIRETO (Francisco de Jesus Vernetti Junior; Algenor da Silva Gomes pag 27-38); IMPLANTAÇÃO DA LAVOURA DE MILHO (Marilda Pereira Porto; Claudio Alberto Sousa da Silva; José Maria Barbat Parfitt; Silvio Steinmetz pag 39-43); CULTIVARES DE MILHO (Marilda Pereira Porto pag 45-55); MANEJO DA CULTURA DO SORGO (Antonio André Amaral Raupp pag 57-59); DRENAGEM E IRRIGAÇÃO PARA MILHO E SORGO CULTIVADOS EM ROTAÇÃO COM ARROZ IRRIGADO (Claudio Alberto Souza da Silva; José Maria Barbat Partitt pag 61-72); ADEQUAÇÃO DA ÁREA PARA A SEMEADURA DO SORGO E DO MILHO IRRIGADOS POR INUNDAÇÃO (José Barbat Partitt; Claudio Alberto S. da Silva pag 73-76); MANEJO DE PLANTAS DANINHAS NA CULTURA DO MILHO EM TERRAS BAIXAS (André Andres; Aldo Merotto Júnior pag 77-86); INSETOS-PRAGAS DAS CULTURAS DO MILHO E DO SORGO NO AGROECOSSISTEMA DE VÁRZEA (Anderson Dionei Grützmacher; José Francisco da Silva Martins; Uemerson Silva da Cunha pag 87-101); DOENÇAS DAS CULTURAS DO SORGO E DO MILHO (Nely Brancão pag 103-106); SECAGEM E ARMAZENAMENTO DE GRÃOS DE MILHO E DE SORGO NA PROPRIEDADE RURAL (Moacir Cardoso Elias pag 107-146).bitstream/item/84493/1/Documento-74-.pdf; bitstream/item/84479/1/Documento-74-pag-001-018.pdf; bitstream/item/84480/1/Documento-74-pag-019-026.pdf; bitstream/item/84481/1/Documento-74-pag-027-038.pdf; bitstream/item/84482/1/Documento-74-pag-039-043.pdf; bitstream/item/84483/1/Documento-74-pag-045-055.pdf; bitstream/item/84484/1/Documento-74-pag-057-059.pdf; bitstream/item/84485/1/Documento-74-pag-061-072.pdf; bitstream/item/84487/1/Documento-74-pag-073-076.pdf; bitstream/item/84488/1/Documento-74-pag-077-086.pdf; bitstream/item/84489/1/Documento-74-pag-087-101.pdf; bitstream/item/84490/1/Documento-74-pag-103-106.pdf; bitstream/item/84492/1/Documento-74-pag-107-146.pd
Mechanisms of nonstoichiometry in HfN<sub>1-<i>x</i></sub>
Density functional theory is used to calculate defect structures that can accommodate nonstoichiometry in hafnium nitride: HfN1-x, 0 ≤ X ≤ 0.25. It is predicted that a mechanism assuming simple distributions of nitrogen vacancies can accurately describe the variation in the experimentally observed lattice parameter with respect to the nitrogen nonstoichiometry. Although the lattice parameter changes are remarkably small across the whole nonstoichiometry range, the variations in the bulk modulus are much greater
Design of a Guarded Hot Plate for Measuring Thin Specimens of Polymer and Composite Materials
The National Physical Laboratory (NPL) has developed a new design of guarded hot plate apparatus specifically for absolute measurements on thin specimens of medium thermal conductivity materials, such as the polymer composites that are becoming more widely used in aerospace and other advanced manufacturing sectors. Although NPL has an existing measurement facility based on a commercially manufactured apparatus conforming to ASTM E1530, this current facility is not based on an absolute measurement technique and is not able to provide the low measurement uncertainty or flexibility that is increasingly being demanded by industrial users of this NPL service.
The target specification for this new NPL guarded hot plate is the measurement of materials with thermal conductivity in the range 0.1–10 W·m−1·K−1 using specimens with thickness of 1–20 mm and over the temperature range −100°C to 250°C. This is achieved using a new design of guarded heater plate and a temperature-controlled environmental chamber. This chamber can be evacuated and specific gases can be introduced, enabling measurements on porous materials under a wide range of environments. It can be used in either a single specimen or a double specimen configuration, and with specimen diameters of either 75 mm or 50.8 mm that is used in many older styles of comparative measurement apparatus. During the commissioning of this new measurements facility, it is planned to investigate various approaches for reducing thermal contact resistance between the specimen and plates. This facility will then provide the flexibility for meeting a wider range of requirements from industrial customers
Meibocyte differentiation and renewal: Insights into novel mechanisms of meibomian gland dysfunction (MGD)
This paper reviews our current understanding of age-related meibomian gland dysfunction (MGD) and the role of the nuclear receptor, peroxisome proliferator-activated receptor gamma (PPARγ), in the regulation of meibomian gland function, meibocyte differentiation and lipid synthesis. The studies suggest that PPARγ is a master regulator of meibocyte differentiation and function, whose expression and nuclear signaling coupled with meibocyte renewal is altered during aging, potentially leading to atrophy of the meibomian gland as seen in clinical MGD. Study of meibomian gland stem cells also suggest that there is a limited number of precursor meibocytes that provide progeny to the acini, that may be susceptible to exhaustion as occurs during aging and other environmental factors. Further study of pathways regulating PPARγ expression and function as well as meibocyte stem cell maintenance may provide clues to establishing cellular and molecular mechanisms underlying MGD and the development of novel therapeutic strategies to treating this disease
Irrigação por inundação intermitente para culturas em rotação ao arroz em áreas de várzea do Rio Grande do Sul.
bitstream/item/30786/1/CircT-46.pd
Drenagem superficial para diversificação do uso de solos de várzea do Rio Grande do Sul.
bitstream/item/30790/1/Circular-40.pd
Recommended from our members
Oxygen diffusion in Sr<sub>0.75</sub>Y<sub>0.25</sub>CoO<sub>2.625</sub>: a molecular dynamics study
Oxygen diffusion in Sr0.75Y0.25CoO2.625 is investigated using molecular dynamics simulations in conjunction with an established set of Born model potentials. We predict an activation energy of diffusion for 1.56 eV in the temperature range of 1000-1400 K. We observe extensive disordering of the oxygen ions over a subset of lattice sites. Furthermore, oxygen ion diffusion both in the a-b plane and along the c axis requires the same set of rate-limiting ion hops. It is predicted that oxygen transport in Sr0.75Y0.25CoO2.625 is therefore isotropic
Rice growth under water stress levels imposedat distinct developmental stages.
Made available in DSpace on 2017-10-18T09:30:45Z (GMT). No. of bitstreams: 1
GermaniConcenco11RCAV40n32017v2.pdf: 4312933 bytes, checksum: c932e8c978a062f22e625c49676c7092 (MD5)
Previous issue date: 2017-10-17bitstream/item/165182/1/Germani-Concenco-11-RCA-V40-n3-2017-v2.pd
- …