Space Applications
Mostrando 1-12 de 271 artigos, teses e dissertações.
-
1. A 2.4 GHz Coplanar Solar Cell Patch Antenna with a Semi-Analytical Evaluation of Temperature Effects
Abstract Solar cells integrated with antennas have aroused scientific interest as an attractive energy source alternative in low power devices for IoT and Wireless Sensor Network applications. Since the space for all components in the systems is scarce, different integration ideas have been proposed in this field. However, further analysis of the performance
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
-
2. Analytical method validation for the identification and quantification of dissolved gold and gold nanoparticles in cosmetics products by single particle inductively coupled plasma mass spectrometry
Nanoparticle (NP) applications have recently gained more space in the development of many products, especially in cosmetology. The aim of the present study was to validate a single particle inductively coupled plasma mass spectrometry technique for the detection and quantification of gold nanoparticles (AuNPs) and gold ions (Au (i)) in different cosmetics cu
Quím. Nova. Publicado em: 2021-06
-
3. A IMPORTÂNCIA DAS CUMARINAS PARA A QUÍMICA MEDICINAL E O DESENVOLVIMENTO DE COMPOSTOS BIOATIVOS NOS ÚLTIMOS ANOS
Coumarins are natural products characterized as 2H-chromen-2-one, according to IUPAC nomenclature, largely distributed in plants, as well as, in species of fungi and bacteria. Nowadays, many synthetic procedures allow the discovery of coumarins with expanded chemical space. The ability to exert non-covalent interactions with many enzymes and receptors in liv
Quím. Nova. Publicado em: 2021-02
-
4. Using the Interval Metric for Modeling Entities Geometrics in ℝ2 - Case Study Interval Circumference
ABSTRACT The study of some distances provide science a way to separate two entities. It has applications in various fields such as remote sensing, data mining, pattern recognition and multivariate data analysis and others. If the distance is a Hausdorff metric, the guarantee is that all individuals are available. With the use of the distance of Trindade et a
TEMA (São Carlos). Publicado em: 2020-04
-
5. The Wind Environment Interactions Relative to Launch Vehicle Design
ABSTRACT Since atmospheric winds play the most critical natural enviroment (NE) role as input into the design and development of an aerospace launch vehicle, this paper provides a more detailed description of the wind environment and its interaction with engineering design in launch and space vehicle development applications at Kennedy Space Center (KSC).
J. Aerosp. Technol. Manag.. Publicado em: 17/01/2020
-
6. Conflictos en la frontera, los derechos y las políticas de un pacto social
Abstract The conflicts of the borders between nations and the social pacts establish interactions between social agents, rights and the democratic State. The objective of the article is to analyze, from the sociological point of view, the relationship between the perception of the existence of social pacts and the multiple conflicts. We investigated the nort
Soc. estado.. Publicado em: 19/08/2019
-
7. Desenvolvimento e Avaliação de uma Tocha de Soldagem Inteligente
Resumo A soldagem de estruturas destinadas à construção naval em estaleiros é realizada, em sua maioria, de forma manual no cenário brasileiro. Assim como em qualquer aplicação, nesta os parâmetros de soldagem devem ser ajustados conforme a posição de soldagem a fim de garantir a qualidade desejada da união. Todavia, na prática o que se observa �
Soldag. insp.. Publicado em: 15/07/2019
-
8. Characterization of new selective coatings, made of granite and chrome, for solar collectors
ABSTRACT The depletion of fossil fuel reserves and climate change caused by atmospheric pollution has led the human being to seek alternatives that are less damaging to the environment. The concern and the awareness of the population open space for the study of renewable energies to be deepened, among them the best use of solar energy. The use of alternative
Matéria (Rio J.). Publicado em: 10/06/2019
-
9. COATING PERFORMANCES OF CRIMEAN JUNIPER (Juniperus excelsa M. BIEB.) WOOD
ABSTRACT The purpose of this study is to determine the varnish layer hardness and varnish adhesion strength of the varnished Crimean juniper (Juniperus excelsa M. Bieb.) wood growing naturally in the Kastamonu region of Turkey. Test samples were varnished with UV-resistant polyurethane alkyd resin high gloss varnish (PAV) and water-based acrylic resin gloss
CERNE. Publicado em: 20/05/2019
-
10. New Composites CP@AC Based on Lanthanide Succinates
Composites derived from coordination polymers have been gathering great attention due to their singular properties and applications, especially catalysis and adsorption. In this work, seven new composites based on activated carbon (AC) and lanthanide-succinates (LnSuc; Ln = Pr, Nd, Sm, Gd, Dy, Er and Tm, and Suc = succinate) 3D-coordination polymers were obt
J. Braz. Chem. Soc.. Publicado em: 2019-04
-
11. Dumbbell Shaped Microstrip Broadband Antenna
Abstract In this article, a dumbbell shaped microstrip broadband microstrip antenna with partial ground plane is presented, The overall dimension of the proposed antenna is 20 × 15 × 1.5 mm3 and is fabricated on FR4 substrate which has electrical permittivity of 4.3 and loss tangent of 0.025. FR4 is a low cost and easily available. The thickness of the sub
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2019-03
-
12. Protagonismo dos Estudantes de Medicina no Uso do Facebook na Graduação
RESUMO Esta pesquisa analisou o uso do Facebook e as noções de conhecimento ético em rede por estudantes da graduação de Medicina. Trata-se de estudo transversal descritivo, realizado de agosto a dezembro de 2015, com questionário estruturado impresso autoaplicado a alunos de Medicina procedentes de instituição pública de Curitiba (PR). A amostra fo
Rev. bras. educ. med.. Publicado em: 2019-03