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Journal articles on the topic "E.P. Ranch (Alta.)"
Ponce-Covarrubias, José L., Blanca C. Pineda-Burgos, Pedro E. Hernández-Ruiz, Edgar Valencia-Franco, Ricardo Vicente-Pérez, and Ethel Caterina García-y-González. "La administración de autovacuna La administración repetida de vacuna autógena disminuye la papilomatosis en hembras bovinas." Revista MVZ Córdoba 26, no. 3 (June 30, 2021): e2023. http://dx.doi.org/10.21897/rmvz.2023.
Full textPool, José Adrián Cimé, Silvia F. Hernández Betancourt, and Salvador Medina Peralta. "Área de actividad de Heteromys gaumeri en una selva mediana subcaducifolia de Yucatán." Revista Mexicana de Mastozoología (Nueva Epoca) 6, no. 1 (January 1, 2004): 5. http://dx.doi.org/10.22201/ie.20074484e.2002.6.1.103.
Full textGuzmán Q., J. Antonio, and Heiner Vega S. "¿Es la cobertura forestal conservada y restaurada por las zonas protegidas?: El caso de dos áreas silvestres protegidas en el Pacífico Central de Costa Rica." Revista de Biología Tropical 63, no. 3 (September 1, 2015): 579. http://dx.doi.org/10.15517/rbt.v63i3.15814.
Full textKurniawati, Farida. "Konstruksi Alat Ukur Interaksi Guru-Siswa di Sekolah Dasar Inklusif." INKLUSI 5, no. 1 (June 30, 2018): 1. http://dx.doi.org/10.14421/ijds.050101.
Full textJuanes Juanes, Blanca. "Supergraphics. Sea Ranch and the proto-Pop authenticity." EGA Revista de expresión gráfica arquitectónica 23, no. 33 (July 13, 2018): 190. http://dx.doi.org/10.4995/ega.2018.7880.
Full textKILONZO, CHRISTOPHER, EDWARD R. ATWILL, ROBERT MANDRELL, MELISSA GARRICK, VERONICA VILLANUEVA, and BRUCE R. HOAR. "Prevalence and Molecular Characterization of Escherichia coli O157:H7 by Multiple-Locus Variable-Number Tandem Repeat Analysis and Pulsed-Field Gel Electrophoresis in Three Sheep Farming Operations in California." Journal of Food Protection 74, no. 9 (September 1, 2011): 1413–21. http://dx.doi.org/10.4315/0362-028x.jfp-10-529.
Full textCerreta, Anthony J., Shelly L. Vaden, Gregory A. Lewbart, Juan Pablo Muñoz-Pérez, and Diego Páez-Rosas. "Increased BUN and glucose in a group of San Cristóbal galapagos tortoises (Chelonoidis chathamensis)." Veterinary Record Case Reports 7, no. 2 (May 2019): e000699. http://dx.doi.org/10.1136/vetreccr-2018-000699.
Full textGibb, D. J., K. S. Schwartzkopf-Genswein, T. A. McAllister, B. M. A. Genswein, and M. Streeter. "Effect of sub-therapeutic antibiotics and auction exposure on health, performance, and feeding behavior of weaned calves." Canadian Journal of Animal Science 86, no. 4 (December 1, 2006): 457–60. http://dx.doi.org/10.4141/a06-024.
Full textEiguren, Nick M., Katie Peterson, and Zach D. McFarlane. "PSI-35 Foot and hair shedding scores of crossbred cattle grazing native rangeland differ by age group." Journal of Animal Science 98, Supplement_4 (November 3, 2020): 475. http://dx.doi.org/10.1093/jas/skaa278.829.
Full textGarsetiasih, R. "Daya Cerna Jagung dan Rumput sebagai Pakan Rusa (Cervus Timorensis)." Buletin Plasma Nutfah 13, no. 2 (October 7, 2016): 88. http://dx.doi.org/10.21082/blpn.v13n2.2007.p88-92.
Full textDissertations / Theses on the topic "E.P. Ranch (Alta.)"
Silva, Juan Eduardo Casavilca. "p-Multigrid explícito para um método de volumes finitos de alta-ordem não estruturado." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/45/45132/tde-24082016-174037/.
Full textSince Barth and Frederickson\'s important work (Barth e Frederickson, 1990), a number of researchers have studied high-order k-exact Finite Volume method, for example Prof. Ollivier-Gooch\'s group: Ollivier-Gooch e van Altena (2002), Nejat (2007), Michalak (2009), etc. Other quite popular high-order spatial discretizations are the Discontinuous Galerkin methods and the Spectral Difference methods; the iterative processes involving these schemes have been accelerated in recent years by p-multigrid methods. However, this acceleration has not been applied in the context of the high-order Finite Volume method, at least for the knowledge of the author of this thesis. Therefore, the objective of this research is to adapt the p-multigrid developed by Liang et al. (2009b) in the context of Spectral Difference methods, to the environment of Finite Volume studied by Prof. Ollivier-Gooch. This research begins by implementing the solver VF-RK, Finite Volume solver with Runge-Kutta advance, to compute the advection-diffusion equation and Euler equations applied to steady state problems, for example, the transonic flow around NACA 0012. Then, it is studied the p-multigrid method in the context of Spectral Difference schemes; p-multigrid accelerates the iterative process by switching polynomial levels of high- and low-order. After this study, the adaptation to the context of the Finite Volume scheme is performed resulting in a relatively simple p-multigrid because, in contrast to the p-multigrid for Spectral Difference schemes, it doesn\'t need restriction and prolongation operators for communication between different polynomial levels. The research concludes with a comparison with 4th order Finite Volume method without p-multigrid (solver VF-RK). Accordingly, the solver pMG, based on the proposed p-multigrid, is implemented to resolve the steady state problems considered in the first part of the work; the p-multigrid smoother is the Runge-Kutta scheme from VF-RK code, and each steady state problem is solved using different Vcycles, looking for 4th order solutions ever. The results indicate that the proposed p-multigrid method is more efficient than the 4th order Finite Volume method without p-multigrid: the two methods give the same accuracy but the first one can take less than 50% of second one\'s CPU time.
Conti, Denise Santos. "Estudo da miscibilidade, morfologia e propriedades mecânicas de blendas P(3HB)/P(3HB-co-3HV) e equilíbrio de fases em altas pressões de P(3HB) e P(3HB-co-3HV) em gases densos." Universidade do Estado de Santa Catarina, 2006. http://tede.udesc.br/handle/handle/1695.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
Aiming at the development of biodegradable materials with good properties that become them viable in daily applications, it was studied in this work the miscibility, the morphology and the mechanical properties of P(3HB)/P(3HB-co-3HV) blends, as well as the behavior of phases in high pressures of P(3HB) and P(3HB-co-3HV) in dense gases. Two types of P(3HB), P(3HB)-1 and P(3HB)-2 were used, with different molar weights (492 and 300 kg.mol-1, respectively) and two types of P(3HB-co-3HV), P(3HB-co-3HV)- 6%3HV and P(3HB-co-3HV)-10%3HV with different molar weights (294.2 and 340 kg.mol-1, respectively). P(3HB)-1/P(3HB-co-3HV)-6%3HV and P(3HB)-2/P(3HB-co- 3HV)-10%3HV blends were prepared in the form of films by the process of casting using chloroform as solvent (1% m/v for DSC, DRX and MEV analyses; e 0.3% m/v for FTIR analyses), in an large range of mass ratios of copolymer (0 the 100%). The DSC analyses showed that the blends (where it was possible to visualize the Tg) were miscible in the amorphous phase, therefore had presented only one Tg which agreed to the Tg calculated by Fox Equation. Moreover, the linear relation between Tg versus copolymer content also suggested the miscibility. With relation to the melting process, it was obtained the linear relation between Tm versus copolymer content, indicating that the components were miscible in the melting with cocrystallization. The crystallinity degree calculated by DSC was reduced in P(3HB)-2/P(3HB-co-3HV)-10%3HV blends and practically was constant in the P(3HB)-1/P(3HB-co-3HV)-6%3HV blends, according to the increase of the copolymer content. The study of the crystallinity by FTIR showed results that agreed to the results of the crystallinity degree obtained by DSC and DRX. The MEV analyses showed that the fracture surface of the films of blends presented fragile fracture. For the evaluation of the mechanical behavior, P(3HB)-1/P(3HB-co-3HV)-6%3HV blends were prepared by injection mechanic mixture in mass ratios of 0, 20, 50, 80 and 100% of copolymer. According to the increase of the copolymer content in the blend, it was obtained that the hardness Shore D and the maximum tensile strength presented a little significant reduction, the elasticity modulus showed a significant reduction, the elongation at break presented a little significant increase and the Izod impact strength practically remained constant. The MEV analyses in the fracture surface of the samples of the mechanical tests presented morphology with fragile fracture for all blends. The pure biopolymers P(3HB)-2 and P(3HB-co-3HV)-10%3HV were insoluble in high pressures in the carbon dioxide and chloroform/propane solvents, in a large range of temperature and pressure used. However, the biopolymers were soluble in the P(3HB)-2/clorofórmio and P(3HB-co-3HV)-10%3HV/ chloroform systems, but no one cloud point was observed in any combination of temperature and pressure.
Visando o desenvolvimento de materiais biodegradáveis com boas propriedades que os tornem viáveis em aplicações cotidianas, estudou-se nesse trabalho a miscibilidade, amorfologia e as propriedades mecânicas de blendas P(3HB)/P(3HB-co-3HV), bem como o comportamento de fases em altas pressões de P(3HB) e P(3HB-co-3HV) em gases densos. Foram utilizados dois tipos de P(3HB), P(3HB)-1 e P(3HB)-2, com diferentes massas molares (492 e 300 kg.mol-1, respectivamente) e dois tipos de P(3HB-co-3HV), P(3HB-co-3HV)-6%3HV e P(3HB-co-3HV)-10%3HV com diferentes massas molares (294,2 e 340 kg.mol-1, respectivamente). Blendas P(3HB)-1/P(3HB-co-3HV)-6%3HV e P(3HB)- 2/P(3HB-co-3HV)-10%3HV foram preparadas na forma de filmes através do processo de casting usando clorofórmio como solvente (1% m/v para análises de DSC, DRX e MEV; e 0,3% m/v para análises de FTIR), numa ampla faixa de proporções mássicas de copolímero (0 a 100%). As análises de DSC revelaram que as blendas (onde foi possível visualizar a Tg) foram miscíveis na fase amorfa, pois apresentaram uma única Tg a qual concordou com a Tg calculada pela Equação de Fox. Além disso, a relação linear entre Tg versus quantidade mássica de copolímero também sugeriu a miscibilidade. Com relação ao processo de fusão, obteve-se a relação linear entre Tm versus quantidade mássica de copolímero, indicando que os componentes foram miscíveis na fusão com cocristalização. O grau de cristalinidade calculado a partir de DSC foi diminuído nas blendas P(3HB)- 2/P(3HB-co-3HV)-10%3HV e permaneceu praticamente constante nas blendas P(3HB)- 1/P(3HB-co-3HV)-6%3HV, de acordo com o aumento da quantidade mássica de copolímero. O estudo da cristalinidade através de FTIR mostrou resultados que concordaram com os resultados de grau de cristalinidade obtidos através de DSC e DRX. As análises de MEV revelaram que a superfície criofraturada dos filmes das blendas apresentaram-se com fratura frágil. Para a avaliação do comportamento mecânico, blendas P(3HB)-1/P(3HB-co-3HV)-6%3HV foram obtidas através de mistura mecânica via injeção nas proporções de 0, 20, 50, 80 e 100% em massa de copolímero. Em relação ao aumento da quantidade mássica de copolímero na blenda, obteve-se que a dureza Shore D e a tensão máxima de tração apresentaram redução pouco significativa, o módulo de elasticidade mostrou diminuição significativa, a deformação na ruptura apresentou aumento pouco significativo e a resistência ao impacto Izod permaneceu praticamente constante. As análises de MEV na superfície de fratura dos corpos de prova rompidos nos ensaios mecânicos revelaram uma morfologia com fratura frágil para todas as blendas. Os biopolímeros puros P(3HB)-2 e P(3HB-co-3HV)-10%3HV mostraram-se insolúveis em altas pressões nos solventes dióxido de carbono e clorofórmio/propano, numa ampla faixa de temperatura e pressão. Já nos sistemas P(3HB)-2/clorofórmio e P(3HB-co-3HV)- 10%3HV/clorofórmio obteve-se a solubilização dos biopolímeros, mas não foi observada a separação de fases em nenhuma combinação de temperatura e pressão utilizadas.
Gil, Hector Alexandre Chaves. "Estudo das modificações estruturais induzidas pela radiação de alta energia sobre o copolímero P(VDF-TrFE)." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/46/46132/tde-28012016-170840/.
Full textPoly(vinylidene fluoride-co-trifluoroethylene) films, P(VDF-TrFE), with a molar ratio 70/30 of VDF and TrFE units, respectively, were exposed to X-ray radiation under vacuum in a wide range of irradiation doses. This is a statistic semi-crystalline copolymer and displays the unique feature of a spontaneous crystallization into a ferroelectric structure. It also possesses a detectable ferro-paraelectric transition, the Curie temperature (Tc). Due to these characteristics considerable interest in such copolymer has been generated, specially in electronics as a transducer element. The induced modifications were investigated by Fourier transform infrared photoacoustic spectroscopy (FT-IR/PAS) as well as transmittance FT-IR, differential scanning calorimetry (DSC), thermogravimetry (TG), X-ray diffraction, UV/Visible and Raman spectroscopies. The spectroscopic vibrational techniques (FT-IR/PAS, FT-IR and Raman) were used to identify bands related to crystalline and amorphous regions, bond formation, bond scission and presence of new functional groups. In both IR and Raman spectra were observed a couple of bands related to the crystalline regions that undergo changes of relative intensities with the radiation dose. These changes may be interpreted as an increase or decrease of the crystallinity degree, and also modifications of crystal structure. X-ray diffraction showed a new peak, close to that of the ferroelectric phase, under increasing radiation doses, due to a modification of crystal structure process above 480 kGy dose. An increase in the intensity of the former diffraction peak was observed, corresponding to an increase in the crystallinity degree. The DSC curves showed the endothermic peaks corresponding to the melting and the phase transitions, whose variations allow an evaluation of the effects of X-ray radiation. UV/Visible spectra showed chromophores absorptions whose band intensities increase by radiation dose and decrease during sample\'s aging. The data indicate that P(VDF-TrFE) under X-ray radiation exposition undergoes a crystal structure modification, probably a change of a ferroelectric structure to another one, paraelectric.
Casagrande, Marcelo Henrique. "Comparação de métodos de estimação para problemas com colinearidade e/ou alta dimensionalidade (p > n)." Universidade Federal de São Carlos, 2016. https://repositorio.ufscar.br/handle/ufscar/7954.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
This paper presents a comparative study of the predictive power of four suitable regression methods for situations in which data, arranged in the planning matrix, are very poorly multicolinearity and / or high dimensionality, wherein the number of covariates is greater the number of observations. In this study, the methods discussed are: principal component regression, partial least squares regression, ridge regression and LASSO. The work includes simulations, wherein the predictive power of each of the techniques is evaluated for di erent scenarios de ned by the number of covariates, sample size and quantity and intensity ratios (e ects) signi cant, highlighting the main di erences between the methods and allowing for the creating a guide for the user to choose which method to use based on some prior knowledge that it may have. An application on real data (not simulated) is also addressed.
Este trabalho apresenta um estudo comparativo do poder de predi c~ao de quatro m etodos de regress~ao adequados para situa c~oes nas quais os dados, dispostos na matriz de planejamento, apresentam s erios problemas de multicolinearidade e/ou de alta dimensionalidade, em que o n umero de covari aveis e maior do que o n umero de observa c~oes. No presente trabalho, os m etodos abordados s~ao: regress~ao por componentes principais, regress~ao por m nimos quadrados parciais, regress~ao ridge e LASSO. O trabalho engloba simula c~oes, em que o poder preditivo de cada uma das t ecnicas e avaliado para diferentes cen arios de nidos por n umero de covari aveis, tamanho de amostra e quantidade e intensidade de coe cientes (efeitos) signi cativos, destacando as principais diferen cas entre os m etodos e possibilitando a cria c~ao de um guia para que o usu ario possa escolher qual metodologia usar com base em algum conhecimento pr evio que o mesmo possa ter. Uma aplica c~ao em dados reais (n~ao simulados) tamb em e abordada
Carvalho, Werson Magno de. "Estudo da moagem de alta energia e sinteriza??o de p?s comp?sitos W-Cu." Universidade Federal do Rio Grande do Norte, 2008. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12665.
Full textThe Tungsten/copper composites are commonly used for electrical and thermal objectives like heat sinks and lectrical conductors, propitiating an excellent thermal and electrical conductivity. These properties are dependents of the composition, crystallite size and production process. The high energy milling of the powder of W-Cu produces an dispersion high and homogenization levels with crystallite size of W very small in the ductile Cu phase. This work discusses the effect of the HEM in preparation of the W-25Cu composite powders. Three techniques of powder preparation were utilized: milling the dry with powder of thick Cu, milling the dry with powder of fine Cu and milling the wet with powder of thick Cu. The form, size and composition of the particles of the powders milled were observed by scanning electron microscopy (SEM). The X-ray diffraction (XRD) was used to analyse the phases, lattice parameters, size and microstrain of the crystallite. The analyse of the crystalline structure of the W-25Cu powders milled made by Rietveld Method suggests the partial solid solubility of the constituent elements of the Cu in lattice of the W. This analyse shows too that the HEM produces the reduction high on the crystallite size and the increase in the lattice strain of both phases, this is more intense in the phase W
Os comp?sitos de Tungst?nio/Cobre (W-Cu) s?o geralmente usadas para fins el?tricos e t?rmicos como dissipadores de calor e condutores el?tricos, devido as suas excelentes propriedades de condutividades t?rmica e el?trica. Essas propriedades s?o dependentes da composi??o, do tamanho de cristalito e principalmente do processo de fabrica??o. A moagem de alta energia de p?s W-Cu produz alto n?vel de homogeneiza??o e dispers?o com cristalitos de W muito fino na fase d?ctil Cu. Este trabalho discute o efeito da MAE na prepara??o dos p?s comp?sitos W-25Cu. Tr?s t?cnicas de prepara??o dos p?s foram utilizadas: moagem a seco com p? de Cu grosso, moagem a seco com p? de Cu fino e moagem a ?mido com p? de Cu grosso. A forma, tamanho e a composi??o das part?culas dos p?s mo?dos foram observadas por microsc?pio eletr?nico de varredura (MEV). A difra??o de raios-X(DRX) foi usada para observar as fases, par?metros de rede, tamanho e microtens?o dos cristalitos. A an?lise da estrutura cristalina dos p?s mo?dos de W-25Cu feita pelo m?todo de Rietveld sugere uma solubilidade s?lida parcial dos elementos constituintes do cobre (Cu) na rede do tungst?nio (W). Essa an?lise tamb?m mostra que a MAE produz uma alta redu??o no tamanho dos cristalitos e um aumento de tens?o na rede de ambas as fases, isto ocorre com maior intensidade na fase do W
Valente, da Costa Gilberto Luis 1983. "hp2FEM : uma arquitetura de software p não-uniforme para o método de elementos finitos de alta ordem." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263474.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
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Resumo: Este trabalho tem como objetivo principal a implementação de uma arquitetura de software para o Método de Elementos Finitos de Alta Ordem (MEF-AO), baseando-se no paradigma de programação orientada a objeto (POO) e no uso de técnicas de otimização de código fonte. O software foi escrito em linguagem C++ e desenvolvido sobre um framework com ferramentas que auxiliaram no desenvolvimento. A modelagem do sistema foi realizada de forma a facilitar e promover o reuso e manutenção do código. Buscou-se, também, a flexibilidade e generalização do MEF-AO ao permitir a variação nos procedimentos da construção das equações e o uso de malhas p não-uniforme. Neste caso, cada elemento pode ser interpolado com uma ordem polinomial diferente, além de permitir o uso de um algoritmo local de solução. Tal característica pode diminuir o número de operações e de armazenamento, pois o número de funções de forma é aumentado apenas onde é necessário o uso de mais pontos para interpolação da malha de solução. No final, o software é avaliado aplicando o problema de projeção para malha de quadrados e hexaedros
Abstract: The main objective of this work is the implementation of a software architecture for the High-Order Finite Element Method (HO-FEM), based on the Object Oriented Paradigm (OOP) and on source-code optimization techniques. The software was written in C++ programming language and developed over a framework which provided tools that assisted the implementation. The system was modeled so to promote code reuse and maintainability. Furthermore, the system modeling also provided flexibility and generalization for the HO-FEM by allowing modifications on the procedures for equation assembling and the use of p-non-uniform meshes. In this case, each element can be interpolated with different polynomial order, and allows the application of an algorithm for local solution. Such features can reduce the number of operations for memory allocation, since the number of shape functions is increased only where a higher density of points is needed by the solution mesh. Finally, the software is assessed by applying the projection problem for meshes of squares and hexahedros
Mestrado
Mecanica dos Sólidos e Projeto Mecanico
Mestre em Engenharia Mecânica
Pinto, Flávia Morais Gomes. "Desinfecção das canetas de alta rotação com álcool 70% p/v sem limpeza prévia: avaliação do risco de infecção cruzada." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/7/7139/tde-20092013-091255/.
Full textIntroduction: In dental clinical practice, decontamination of high-speed dental equipment (HSDE) by direct use of 70% ethanol without previous cleaning, justified by practicality, the short-time available between appointments, together with inadequate predicting and provision of HSDE, is a reality. This procedure, a priori, contradicts the processing protocols recommended to prevent cross-infection. Objective: to evaluate the disinfection of HSDE with 70% ethanol without previous cleaning, with views of cross-infection risk. Method: the present study was characterized as a pragmatic research in a Dental Office, which practices of interest to the study were routinely performed. The experimental group consisted of 100 samples of HSDE used in different treatments after rubbing the disinfectant for 90 seconds on its outer surface. To evaluate the results, gauze moistened with saline solution was used as a carrier for obtaining microorganisms from the disinfected surfaces. Half of the samples (50) were analyzed by membrane filtration (Method I - quantitative), with the gauze being immersed in 300 mL of saline solution. Sequentially, the sample was exposed to sonication and agitation. After that, the lavage was filtered in three equal parts for different analyses, through a membrane with 0.45 m porosity and seeded on blood agar culture medium, for recovery of aerobic and anaerobic microorganisms, as well as those specifically found in the human oral microbiota. The other 50 samples were analyzed by direct immersion of the gauze in culture medium (Method II - Qualitative): after rubbing the wet gauze on the outer surface of the HSDE, it was placed directly in Fluid Thioglycollate culture medium. The tube containing the gauze was shaken in a vortex mixer and then incubated at 37 ° C for 21 days. Results: samples analyzed by Method I, showed positive growth in 27/50 (54%) of the samples within the range of 100 to 102 CFU/sample. Of this total, 7 different microorganisms were identified, represented by 37.1% of coagulase-negative Staphylococcus, 28.5% of Bacillus spp, 17.1% of non-sporulating Gram-positive bacillus, 5.7% of Micrococcus spp, 5.7 % of Penicillium spp, 2.8% of Acinetobacter baumannii and 2.8% of Candida spp. In the group analyzed by Method II, the total number of tubes with positive growth was 12/50 (24%) samples. Of this total, we identified 2 different microorganisms, being 38.4% of Gram-positive bacillus nonspecific, followed by Staphylococcus spp and Peptococcus spp with the same percentage of positivity of 30.7% each. The negative control group, composed of samples subjected to cleaning and sterilization consecutive showed satisfactory results. The average growth found in the positive control group was 17.5 CFU/sample, except for one sample that showed growth uncountable. Conclusion: the results of the present study do not support the practice of decontamination of HSDE with 70% ethanol without previous cleaning, based on the evidence of microorganism survival that did not meet the expected bactericidal and fungicidal action of alcohol as an intermediate level disinfectant. Another aspect that reinforces the disapproval this practice, it is the consideration that the micro-organisms recovered, even being low pathogenic potential, may behave as anfibionte, which are capable of harming the host when the environmental and immune conditions are favorable to micro-organisms, causing infection.
Rauen, Andre Tortato 1980. "Recente dinâmica espacial da indústria de alta tecnologia = uma tipologia baseada na intensidade de P&D e no desempenho comercial." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/287373.
Full textTese (doutorado) - Universidade Estadual de Campinas, Instituto de Geociências
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Resumo: No passado recente, a produção de alta tecnologia era exclusividade de países de alta renda per capita. Contudo, a moderna possibilidade de fragmentar a produção permitiu que países de baixa renda per capita passassem a também produzir bens de alta tecnologia, mesmo quando estes bens são considerados novos. Observa-se que países de alta renda per capita e de elevada capacitação tecnológica executam atividades de maior complexidade enquanto países de baixa renda per capita, com baixos salários e alguma força de atração, executam atividades intensivas em mão de obra. Este trabalho tem então, por objetivo, apresentar e compreender as macrodinâmicas subjacentes a essa nova e intrincada geografia econômica. Para tanto, o mesmo se apoia na teoria do ciclo de vida do produto, complementada pela perspectiva da fragmentação da produção e pela teoria evolucionária do comércio exterior. Com base nestas abordagens teóricas, foi possível observar que a partir das duas últimas décadas do século XX empresas de alta tecnologia de países desenvolvidos passaram a deslocar sua produção para países em desenvolvimento, com baixos salários. Enquanto a produção e o consumo se deslocaram, a tecnologia ainda permanece concentrada. Identificou-se ainda que, mesmo na existência de forte estímulo ao deslocamento da produção, este só ocorre na ausência de sistemas de inovação capazes de estimular a produção interna. Analogamente, a atração de atividades fragmentadas da produção de alta tecnologia, por parte de países de baixos salários, ocorre apenas quando os governos nacionais executam ativas e efetivas políticas públicas para tal. Depois de compreendidas as forças que atuam no sentido de moldar a atual geografia da alta tecnologia, identificaram-se quatro grupos de países, quais sejam: (i) países de liderança tecnológica superavitários; (ii) países de liderança tecnológica deficitários; (iii) países seguidores tecnológicos superavitários e; (iv) países seguidores tecnológicos deficitários
Abstract: In the past, the high-tech production was exclusive made in high per capita income countries. But, currently, this kind of production is also made in low per capita income countries. This change happened due to the possibility of production fragmentation. In this context, countries with high technology intensities focus on the production of complex components and R&D. On the other hand, countries with low technology intensities focus on the assembling or on the production of simple components. Based on these premises, this doctoral thesis aims to understand the geographical macrodynamics related to this new international division of labor. To achieve this objective, the product life cycle theory, the production fragmentation perspective and the evolutionary theory were used. Based on these theoretical approaches, it was observed that the manufacture and consumption of high tech products has started a process of dispersion through different countries in the globe, including low income ones, and that, at the same time, technology development of these high tech products have remained concentrated in the high income countries. It was also possible to observe that the displacement of production, from the high per capita income countries to the low per capita income countries, could be diminished through the establishment of strong national industrial/innovation policies. Analogously, the attraction, by low per capita income countries, of fragmented production relies on the presence of these same policies. Finally, in this new international division of labor, it was identified four different groups of countries: (i) surplus technology leaders; (ii) deficit technology leaders; (iii) surplus technology followers; and (iv) deficit technology followers
Doutorado
Politica Cientifica e Tecnologica
Doutor em Política Científica e Tecnológica
Rocha, Brenda Chung da. "Idade, duração e condições P-T do metamorfismo de temperatura ultra-alta, anatexia e cristalização de fundido na nappe Socorro-Guaxupé." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/44/44143/tde-28092016-143315/.
Full textThe Socorro-Guaxupé Nappe (SGN) consists of a deeply eroded Neoproterozoic magmatic arc, developed at the active margin of Paranapanema Plate. The SGN is located within the southern Brasília Orogen, that records the Ediacaran collision between the Paranapanema Plate and the São Francisco paleocontinent, related to the assembly of western Gondwana. The SGN exposes a thick section (ca. 10 km) of the lower crust, mainly composed of granulites and migmatites, and by widespread high-K calc-alkaline charnockite-granite intrusions that record the syn-collisional magmatism. The timing of partial melting, ultra-high temperature (UHT) metamorphism and melt crystallization in the SGN is constrained by an integrated study involving zircon and monazite in-situ dating techniques, detailed textural analysis, geothermobarometry, trace element geochemistry in accessory phases and main metamorphic minerals, whole-rock geochemistry and Sr-Nd isotopes in two key outcrops in the Alfenas region (MG): Alfenas Quarry (Metatexite Unit) and Santa Terezinha Quarry (Granulite Unit). Five monazite growth episodes are recognized in (orthopyroxene)-garnet-bearing migmatites within the Metatexite Unit. Monazite preserves prograde growth ages of ca. 631±4 Ma prior to the partial melting event, providing an upper age limit for the granulite-facies metamorphism in the SGN. Apatite-related monazite records the initial stages of decompression at ca. 628±4 Ma. Abundant zircon and monazite growth records a protracted melt crystallization event between ca. 630-600 Ma, with episodic growth in ca. 625 Ma, ca. 615 Ma e ca. 608 Ma at 790-680 °C, based on Ti-in-zircon thermometry. The development of Y+HREE-rich monazite rims documents the final stages of melt crystallization, concomitant to retrograde garnet breakdown and extensive biotite growth along the retrograde metamorphic path. Late recrystallization promoted by fluid infiltration is recorded by Th-rich monazite rims at ca. 590 Ma. Igneous crystallization ages from protoliths of the felsic and garnet granulites range from ca. 730-640 Ma, similarly to the age range of inherited xenocrystic zircon cores from leucosomes in both Metatexite and Granulite Units, and are interpreted to constrain the pre-collisional arc magmatism lasting for at least 90 m.y. The concordia ages of ca. 655-650 Ma obtained from the felsic and garnet granulites (Granulite Unit) reflect the main period of pre-collisional arc magmatism. Peak metamorphic conditions were attained at a ca. 1030 °C a 11.7 kbar, recorded by (orthopyroxene)-garnet-bearing leucosome within the Metatexite Unit, and at ca. 900 °C, 12 kbar recorded by garnet granulites within the Granulite Unit, which characterizes the syn-collisional UHT metamorphism in the SGN, here established in ca. 630-625 Ma. Basaltic magma underplating could be a potential heat source for UHT metamorphism, given the occurrence of syn-metamorphic mafic rocks in close spatial relation to in-situ hornblende- and orthopyroxene-bearing leucosomes within the Granulite Unit. Contrasting REE patterns in these leucosomes provide evidence for the presence of both fractionated melt (higher REE abundance and negative Eu anomaly) and cumulates (lower REE abundance and positive Eu anomaly). Studied samples from the Granulite Unit show isotopic evidence for enriched-mantle sources in their origin, as crustal recycling involving either Archean or Paleoproterozoic older crust have not been recognized yet.
Silva, Mariana Chianca L?cio da. "Estudo do efeito da alumina no sistema WC-Al2O3 via metalurgia do p?" PROGRAMA DE P?S-GRADUA??O EM CI?NCIA E ENGENHARIA DE MATERIAIS, 2017. https://repositorio.ufrn.br/jspui/handle/123456789/22555.
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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)
O carbeto de tungst?nio (WC) ? amplamente conhecido por suas excelentes propriedades f?sicas e mec?nicas, por?m, apresenta limita??es de uso principalmente quando a propriedade de tenacidade ? solicitada e h? a necessidade de um material mais leve. Como alternativa para minimizar essa problem?tica, a proposta ? a produ??o de um material que alie as propriedades do WC com a alumina (Al2O3), diminuindo assim a sua densidade e promovendo o aumento da tenacidade a determinada temperatura. Assim, neste trabalho, estudou-se os efeitos do percentual da alumina e dos par?metros de processamento da metalurgia do p? na microestrutura do particulado e do sinterizado (WC-Al2O3). E, al?m disso, foram analisadas propriedades f?sicas e mec?nicas, particularmente a densidade e a microdureza, do produto buscando um material de ferramenta de corte alternativo. No estudo, adotou-se, respectivamente, a rota de produ??o de materiais particulados. Os p?s do sistema apresentaram as seguintes composi??es: WC com 5, 10 e 15%p. de Al2O3; que foram processados via moagem de alta energia (MAE), em moinho planet?rio durante, 1, 4 e 10 horas. A conforma??o dos p?s mo?dos foi realizada por prensagem uniaxial de matriz cil?ndrica de di?metro de 5 mm, e com a press?o de compacta??o de 400 MPa. A sinteriza??o foi realizada em forno resistivo via fase s?lida, sob atmosfera controlada (arg?nio), nas temperaturas de 1450?C e 1550?C, durante 1 hora, e com uma taxa de aquecimento de 10?C/min. As mat?rias-primas foram caracterizadas atrav?s dos ensaios de particulometria, difra??o de raio-X (DRX) e microscopia eletr?nica de varredura (MEV). As amostras mo?das e sinterizadas foram submetidas aos mesmos ensaios de caracteriza??o dos p?s iniciais. E, os ensaios de microdureza foram realizados com as amostras sinterizadas. Os resultados mostraram que a moagem de alta energia influenciou significativamente na redu??o da distribui??o de tamanho, entretanto, n?o houve dispers?o das fases constituintes do material. E, devido a sinteriza??o ou consolida??o parcial dos compactados a verde, os valores de microdureza foram baixos, resultante da heterogeneidade da microestrutura que apresentou aglomerados das fases (WC-WC e Al2O3 -Al2O3), e, tamb?m, uma alta porcentagem de poros. Contudo, a alumina influenciou no refinamento da microestrutura dos sinterizados.
Tungsten Carbide (WC) is best known for its excellent physical and mechanical properties. However, it has limitations, mainly when the tougher and lighter material is requested. An alternative to minimize these problems is a composite of WC and alumina (Al2O3) to reducing density and promoting toughness at certain temperatures. Thus, in this work, the effects of the different amount of alumina and powder metallurgy processing parameters on microstructure of particulate and sintered composite (WC-Al2O3) were studied and the mechanical properties, particularly the microhardness, of the product were analyzed to find an alternative cutting tool material. In the study, the particulate materials production route was applied. The powders of the system have the following compositions: WC with 5, 10 and 15wt% of Al2O3 processed by high energy milling in a planetary milling for 1, 4 and 10 hours. Compacting of mixed powders was done using a uniaxial press in a cylindrical die of 5 mm diameter under a pressure of 400 MPa. Solid phase sintering was performed in a resistance furnace at 1450 and 1550 ?C with 1 hour of holding time and heating rate of 10?C/min in argon atmosphere. The raw materials were characterized by particulometry, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The milled powders and sintered samples were subjected to the same tests and microhardness test was also done for sintered samples as well. The results showed that high energy milling met the targets for particle size and however, there was no dispersion of the constituent phases of the material. Due to the sintering or partial consolidation of the green compacts, the microhardness values were low, due to the heterogeneity of the microstructure that presented agglomerates of the phases (WC-WC and Al2O3 -Al2O3), and also a high percentage of pores. However, alumina influenced the sintering microstructure refinement.
Books on the topic "E.P. Ranch (Alta.)"
Evans, S. M. Prince charming goes west: The story of the E.P. Ranch. Calgary: University of Calgary, 1993.
Find full textEvans, Simon M. Prince charming goes West: The story of the E.P. Ranch. Calgary: University of Calgary, 1993.
Find full textRocking P. Ranch and the Second Cattle Frontier in Western Canada. University of Calgary Press, 2019.
Find full textMaps, Tom Harrison. Pine Mountain Trail Map: Loma Alta, Gary Giacomini, Roy's Redwoods, French Ranch, White Hill, Cascade Canyon, Marin Municipal Water District, A. Tom Harrison Maps, 2004.
Find full textToledo Rivera, Camilo Enrique. Rol del núcleo retrotrapezoide en el desarrollo de alteraciones cardiorrespiratorias en insuficiencia cardiaca. Universidad Autónoma de Chile, 2018. http://dx.doi.org/10.32457/20.500.12728/87442018dcbm5.
Full textBook chapters on the topic "E.P. Ranch (Alta.)"
"The Rocking P Ranch (and Farm)." In Rocking P Ranch and the Second Cattle Frontier in Western Canada, 41–56. University of Calgary Press, 2019. http://dx.doi.org/10.2307/j.ctvbtzkmp.8.
Full text"Introducing the Rocking P Gazette." In Rocking P Ranch and the Second Cattle Frontier in Western Canada, 89–96. University of Calgary Press, 2019. http://dx.doi.org/10.2307/j.ctvbtzkmp.11.
Full text"Front Matter." In Rocking P Ranch and the Second Cattle Frontier in Western Canada, i—iv. University of Calgary Press, 2019. http://dx.doi.org/10.2307/j.ctvbtzkmp.1.
Full text"Finance Matters." In Rocking P Ranch and the Second Cattle Frontier in Western Canada, 71–86. University of Calgary Press, 2019. http://dx.doi.org/10.2307/j.ctvbtzkmp.10.
Full text"The Rural West." In Rocking P Ranch and the Second Cattle Frontier in Western Canada, 97–120. University of Calgary Press, 2019. http://dx.doi.org/10.2307/j.ctvbtzkmp.12.
Full text"Country Entertainment." In Rocking P Ranch and the Second Cattle Frontier in Western Canada, 121–44. University of Calgary Press, 2019. http://dx.doi.org/10.2307/j.ctvbtzkmp.13.
Full text"Principles of Need." In Rocking P Ranch and the Second Cattle Frontier in Western Canada, 145–58. University of Calgary Press, 2019. http://dx.doi.org/10.2307/j.ctvbtzkmp.14.
Full text"From Religion to Race." In Rocking P Ranch and the Second Cattle Frontier in Western Canada, 159–84. University of Calgary Press, 2019. http://dx.doi.org/10.2307/j.ctvbtzkmp.15.
Full text"Reinforcing Family Values." In Rocking P Ranch and the Second Cattle Frontier in Western Canada, 185–202. University of Calgary Press, 2019. http://dx.doi.org/10.2307/j.ctvbtzkmp.16.
Full text"Conclusions." In Rocking P Ranch and the Second Cattle Frontier in Western Canada, 203–12. University of Calgary Press, 2019. http://dx.doi.org/10.2307/j.ctvbtzkmp.17.
Full textConference papers on the topic "E.P. Ranch (Alta.)"
Bokhonok, Oleg, and Liliana Alcazar Diogo. "Inversão AVA de onda P para estimativa de densidades com alta precisão." In 15th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 31 July-3 August 2017. Brazilian Geophysical Society, 2017. http://dx.doi.org/10.1190/sbgf2017-007.
Full textDinamarca Cáceres, Fernando Nicolas, Rebeca Alayón, Francesc Casanovas Martinez, Rosa Blanca Sauras Quetcuti, Ana Perez, Clara Montserrat Vilardel, Ezequiel Perez Sanchez, Francina Fonseca Casals, and Marta Torrens Melich. "Caracterización de pacientes según motivo de alta en una unidad de desintoxicación hospitalaria." In 22° Congreso de la Sociedad Española de Patología Dual (SEPD) 2020. SEPD, 2020. http://dx.doi.org/10.17579/sepd2020o027.
Full textMonzonís López, Elena, Marina Reguilón Romero, Carmen Manzanedo Pérez, and M. Carmen Arenas Fenollar. "Efecto a largo plazo del estrés físico por inmovilización sobre los niveles de inhibición por prepulso en ratones." In 22° Congreso de la Sociedad Española de Patología Dual (SEPD) 2020. SEPD, 2020. http://dx.doi.org/10.17579/sepd2020p046.
Full textPujante-Gil, Sergio, Elena Monzonís-López, Marina Daiana Reguilón, Carmen Manzanedo, and María Carmen Arenas. "La Inhibición por Prepulso como predictor del incremento a largo plazo de sintomatología depresiva inducida por un estrés repetido: diferencias de sexo." In 22° Congreso de la Sociedad Española de Patología Dual (SEPD) 2020. SEPD, 2020. http://dx.doi.org/10.17579/sepd2020p169.
Full textSilva, Leidyanne Karolaine Barbosa da, Esaú Simões Da Silva, Rhana Cavalcanti Do Nascimento, and Maria Joanellys dos Santos Lima. "RESISTÊNCIA ANTIMICROBIANA DE PSEUDOMONAS AERUGINOSA EM AMBIENTE HOSPITALAR." In Anais do II Congresso Brasileiro de Saúde On-line. Revista Multidisciplinar em Saúde, 2021. http://dx.doi.org/10.51161/rems/1971.
Full textOliveira, Helder, and Nelson Da Fonseca. "Sobrevivência em Redes Ópticas." In XXVIII Concurso de Teses e Dissertações da SBC. Sociedade Brasileira de Computação - SBC, 2020. http://dx.doi.org/10.5753/ctd.2015.9999.
Full textPaixão, Mateus Silva, Arilson Jeans Monteiro Dos Santos, Paulo Weslem Portal Gomes, and Alcindo Da Silva Martins Junior. "PERCEPÇÃO AMBIENTAL: GERENCIAMENTO DOS RESÍDUOS SÓLIDOS NO MUNICÍPIO DE SALVATERRA, PARÁ." In I Congresso Nacional On-line de Conservação e Educação Ambiental. Revista Multidisciplinar de Educação e Meio Ambiente, 2021. http://dx.doi.org/10.51189/rema/1807.
Full textMunhão, Bárbara S., Bianca A. Dantas, Edson N. Cáceres, and Henrique Mongelli. "Implementações GPGPU do Algoritmo de Otimização por Enxame de Partı́culas para o Problema da Mochila Multidimensional." In XX Simpósio em Sistemas Computacionais de Alto Desempenho. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/wscad_estendido.2019.8703.
Full textRodrigues, Claudio R. B. S., Pedro S. Almeida, Guilherme M. Soares, Joao M. Jorge, Danilo P. Pinto, and Henrique A. C. Braga. "Um estudo comparativo de sistemas de iluminação pública: Estado sólido e lâmpadas de vapor de sódio em alta pressão." In 2010 9th IEEE/IAS International Conference on Industry Applications - INDUSCON 2010. IEEE, 2010. http://dx.doi.org/10.1109/induscon.2010.5739987.
Full textMerlin, Everton, Rosemery Issa Rizk, and Wendson Cleber Cardoso Da Cruz. "O CRESCIMENTO DA RUTA GRAVEOLENS L. É AFETADO PELA INOCULAÇÃO MICORRÍZICA." In II Congresso Brasileiro de Ciências Biológicas On-line. Revista Multidisciplinar de Educação e Meio Ambiente, 2021. http://dx.doi.org/10.51189/rema/1234.
Full textReports on the topic "E.P. Ranch (Alta.)"
Vargas-Herrera, Hernando, Juan José Ospina, Carlos Alfonso Huertas-Campos, Adolfo León Cobo-Serna, Edgar Caicedo-García, Juan Pablo Cote-Barón, Nicolás Martínez-Cortés, et al. Informe de Política Monetaria - Julio de 2021. Banco de la República de Colombia, August 2021. http://dx.doi.org/10.32468/inf-pol-mont-eng.tr3.-2021.
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