External Elements
Mostrando 13-24 de 296 artigos, teses e dissertações.
-
13. Slow Cook-Off Simulation of PBX Based on RDX
ABSTRACT: Cook-off tests are commonly used to assess thermal behaviour of energetic materials under external thermal stimuli. Numerical simulation became a powerful tool to reduce the costs with experimental tests. However, numerical simulations are not able to predict the violence of thermal response, but instead accurately reproduce radial heat flow in the
J. Aerosp. Technol. Manag.. Publicado em: 2017-06
-
14. SIMULATION OF VENTILATION SYSTEMS IN A PROTECTED ENVIRONMENT USING COMPUTATIONAL FLUID DYNAMICS
ABSTRACT Computational simulations of mass and energy flow help in implementing alternative cooling systems in protected environments. The aim of this study was to model and simulate the interaction between external and internal environments of a protected environment by means of computational fluid dynamics (CFD) techniques and validate micrometeorological
Eng. Agríc.. Publicado em: 2017-06
-
15. Comportamiento de la Resistencia al Desgaste entre Depósitos Obtenidos con Electrodos Simple y Doblemente Recubiertos
Abstract The objective of this work was to determine the influence of the relative position of the alloy charge on the electrode coatings on the abrasive wear resistance. For this purpose, three electrodes with similar chemical composition were specially constructed. The electrode variants constructed were differentiated by the position of the alloy charge w
Soldag. insp.. Publicado em: 2017-03
-
16. THE REPRESENTATION OF BASQUE IMMIGRATION IN AMERICAN CINEMA: Wild is the Wind (1959) or the Quest for Elucidating What a Basque Is
ABSTRACT In previous studies I have presented a general overview of the way American Cinema depicted Basque people, and especially Basque immigrants in the American West, and its evolution since the times of silent cinema to our days. In this article I will analyse one of the very first films in which a Basque character is presented, not in a secondary role,
História. Publicado em: 16/01/2017
-
17. Time-Domain Three Dimensional BE-FE Method for Transient Response of Floating Structures Under Unsteady Loads
Abstract This paper presents a direct time-domain three dimensional (3D) numerical procedure to simulate the transient response of very large floating structures (VLFS) subjected to unsteady external loads as well as moving mass. The proposed procedure employs the Boundary Element and Finite Element methods (FEM-BEM). The floating structure and the surroundi
Lat. Am. j. solids struct.. Publicado em: 2016-07
-
18. Distribution of stress in greenhouses frames estimated by aerodynamic coefficients of Brazilian and European standards
ABSTRACT Widely disseminated in both national and international scenarios, greenhouses are agribusiness solutions which are designed to allow for greater efficiency and control of the cultivation of plants. Bearing this in mind, the construction of greenhouses should take into consideration the incidence of wind, and other such aspects of comfort and safety,
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-04
-
19. Pressurized Flow Solubilization System Using Electromagnetic Induction Heating Technique for Simultaneous Determination of Inorganic Elements (Ba, Ca, Cd, Cu, Fe, Mg, Mn, Na, Pb, Sr, Zn) in Sonicate Slurries of Biological Materials by Microwave Induced Plasma Optical Emission Spectrometry (MIP-OES)
A pressurized continuous flow system using electromagnetic induction heating technique has been developed for the determination of trace and minor element content in biological samples by microwave induced plasma-optical emission spectrometry (MIP-OES). The system allows the continuous solubilization of samples at an optimized temperature of 120 °C and pres
J. Braz. Chem. Soc.. Publicado em: 2016-03
-
20. Differences between postmortem computed tomography and conventional autopsy in a stabbing murder case
Objective: The aim of the present work is to analyze the differences and similarities between the elements of a conventional autopsy and images obtained from postmortem computed tomography in a case of a homicide stab wound. Method: Comparison between the findings of different methods: autopsy and postmortem computed tomography. Results: In some aspects
Clinics. Publicado em: 2014-12
-
21. Design of tensegrity structures by minimizing static compliance
This paper presents a new approach to simultaneously obtain the optimal design parameters of tensegrity structures, including pre-stress force and sectional area of elements. The proposed method is based on minimizing the static compliance in terms of some linear and nonlinear constraints using a genetic algorithm tool. This work is devoted to optimize the c
Lat. Am. j. solids struct.. Publicado em: 2014-08
-
22. Trajectory Control During an Aeroassisted Maneuver Between Coplanar Circular Orbits
ABSTRACT: This paper presents the simulation results of an aeroassisted maneuver around the Earth, between coplanar circular orbits, from a geostationary orbit to a low orbit. The simulator developed considers a reference trajectory and a trajectory perturbed by external disturbances combined with non-idealities of sensors and actuators. It is able to operat
J. Aerosp. Technol. Manag.. Publicado em: 2014-06
-
23. Factores determinantes del rendimiento cuando el Counter Movement Jump se realiza en fatiga aguda
This work analysed the changes that occur in kinetic-temporal parameters and the electromyographic activity of lower limb muscles during the performance of maximum Counter Movement Jumps (CMJ) done with and without muscular fatigue, to explain the changes in performance in both situations. The vertical strength of fifty jumps performed by ten male sportsmen
Rev. bras. cineantropom. desempenho hum.. Publicado em: 2014-06
-
24. Superando el síndrome del "enemigo externo" en una firma autopartista a través del kaizen
Two problems in an autoparts firm are initially attributed to uncontrollable external factors ("external enemy" syndrome). This situation motivates the design of a methodology to guide kaizen event practices, supported by kaizen philosophy and methodology. The methodology consist of three steps: the first step, initiate, is designed to acquire employee commi
Prod.. Publicado em: 03/09/2013