Linear Spring
Mostrando 1-12 de 73 artigos, teses e dissertações.
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1. Study of the interaction of concrete walls with the foundation structure
Abstract This article presents a study of the factors that influence the mechanism of soil-structure interaction with a pilot building having concrete walls and their impact on their performance. To illustrate the studies carried out, a numerical modeling of a four-floor concrete wall pilot building was performed, subjected to vertical actions, supported by
REM, Int. Eng. J.. Publicado em: 2021-06
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2. Improved finite element of a transversely cracked straight beam with an additional degree of freedom
Abstract A new finite element with an additional degree of freedom at the crack location is derived for static bending analysis of a transversely cracked uniform slender beam. In the simplified computational model, which is based on Euler-Bernoulli's theory of small displacements, the crack is represented by a linear rotational spring connecting two elastic
Lat. Am. j. solids struct.. Publicado em: 27/06/2019
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3. Nocturnal Activity Rhythm of Nyssomyia intermedia (Diptera: Psychodidae: Phlebotominae) in Campus Fiocruz Mata Atlântica, an American Cutaneous Leishmaniasis Transmission Area, Rio de Janeiro, Brazil
Abstract INTRODUCTION: Nyssomyia intermedia is an important vector of American cutaneous leishmaniasis. METHODS: Sand flies were captured in a Shannon trap and after landing on human collectors and retrieved monthly. Nocturnal activity was estimated using a log-linear model. RESULTS: Peak sand fly collection in the Shannon trap occurred in summer and wint
Rev. Soc. Bras. Med. Trop.. Publicado em: 06/06/2019
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4. VEGETATIVE DEVELOPMENT AND GROWING DEGREE-DAYS OF TROPICAL AND WINTER FORAGES
ABSTRACT One of the limitations to producing irrigated forages is setting suitable biometric parameters to establish the entrance of animals to grazing areas. Such parameters can be measured or even estimated. Estimates are advantageous for being practical and able to be used for grazing optimization. This study aimed to evaluate the correlation among growin
Eng. Agríc.. Publicado em: 25/04/2019
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5. Penman-Monteith with missing data and Hargreaves-Samani for ETo estimation in Espírito Santo state, Brazil
RESUMO O método de Penman-Monteith (PM-FAO) é recomendado como padrão para cálculo da evapotranspiração de referência (ETo). Contudo, a sua utilização requer uma série de variáveis meteorológicas que normalmente não estão disponíveis, restringindo sua aplicação em muitos locais. Uma solução para o problema de indisponibilidade de dados met
Rev. bras. eng. agríc. ambient.. Publicado em: 2019-03
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6. CLIMATE CHANGE AND RURAL WORKERS THERMAL COMFORT: HISTORICAL AND FUTURE IMPACTS
Abstract The aim of the present research was to propose a bioclimatic mapping to classify the thermal comfort and discomfort of rural workers within the state of Minas Gerais, considering historical and future scenarios. Monthly historical series (1976-2014) of minimum, mean and maximum temperature-humidity index (THI), determined through the values of air t
Eng. Agríc.. Publicado em: 2018-04
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7. Modelización lineal de un sistema masa-resorte real
On university introductory courses, while studying the frequency of free oscillations of a vertical spring-mass system in the case of negligible dissipative forces and massless spring, such a frequency can be simply calculated as the square root of the relationship between the local gravity and the spring elongation. However, when an actual spring is used, t
Rev. Bras. Ensino Fís.. Publicado em: 28/09/2017
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8. Predicción Climática Estacional de Precipitación Acumulada en Primavera y Verano en el Sur de Uruguay
Abstract We develop dynamical-statistical forecast models in order to predict seasonal rainfall in southern Uruguay during summer and spring. The statistical technique consists of linear regressions between dynamic variables and rainfall observations. The forecasts for September-October-November are initialized in August and the ones for December-January-Feb
Rev. bras. meteorol.. Publicado em: 2017-09
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9. Water Erosion in a Long-Term Soil Management Experiment with a Humic Cambisol
ABSTRACT Water erosion, the main factor in soil degradation, is strongly influenced by soil cover and management. The objective of this study was to determine soil and water losses under natural rainfall conditions from 1993 to 2012 in the southern Santa Catarina Plateau, Brazil, in 3.5 × 22.1 m plots with crops in rotation to study the following management
Rev. Bras. Ciênc. Solo. Publicado em: 24/08/2017
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10. Reproductive potential of Pagrus pagrus (Perciformes: Sparidae) in coastal waters of Buenos Aires Province (Argentina) and Uruguay (34º-39ºS)
ABSTRACT The reproductive potential of red porgy in coastal waters of Buenos Aires Province (Argentina) and Uruguay (34º-39ºS) was studied by means of a macroscopic and histological analysis of the gonads. Length and age at first maturity were determined, and fecundity, spawning frequency and egg quality were estimated. The spawning season extended from sp
Neotrop. ichthyol.. Publicado em: 03/07/2017
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11. Dosis de N sobre reflectancia espectral, contenido de clorofila y nutrientes en plantas de gerbera
ABSTRACT In soilless crop, nutritional management must ensure the concentration and balance of nutrients, in order to obtain high productivity and quality, while fine adjustment of fertilization contributes to reduce environmental impact. Under the assumption that (1) an optimum level of N can be determined for gerbera, which provides the maximum potential p
Hortic. Bras.. Publicado em: 2017-04
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12. Stress-based fatigue reliability analysis ofthe rail fastening spring clipunder traffic loads
Nowadays, the rail fastening systems play an important role for preserving the connection between the rails and sleepers in various conditions. In this paper, stress based concept is used to develop a comprehensive approach for fatigue reliability analysisof fastening spring clip. Axle load, speed and material properties are assumed to be random variables. F
Lat. Am. j. solids struct.. Publicado em: 2014-11