Portable Equipment
Mostrando 1-12 de 40 artigos, teses e dissertações.
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1. DESENVOLVIMENTO DE ACESSÓRIO PORTÁTIL DE CONTROLE DE TEMPERATURA PARA MEDIDAS ESPECTROSCÓPICAS
Temperature is a natural phenomenon that may modify the structure of chemical compounds and hence their properties. We aimed to develop a simple portable system based on the Peltier principle for spectral characterization of compounds with temperature-dependent structure. The device was constructed and adapted to three pieces of equipment: X-ray diffractomet
Química Nova. Publicado em: 2022
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2. DETERMINAÇÃO DE FÓSFORO EM PALEOSSEDIMENTOS EMPREGANDO ESPECTROMETRIA DE FLUORESCÊNCIA DE RAIOS-X PORTÁTIL
Phosphorus (P) is an important chemical marker of the past human presence, because, besides indicates the localization of possible archaeological sites, also, contributes to clarify doubts regarding to origin, duration and to specific functions that were developed in them. The present study aimed to obtain a simple, accurate, fast and non-destructible analyt
Quím. Nova. Publicado em: 2021-02
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3. Response of the TDR sensor to moisture under different types of management of a typical Latosol in the Cerrado
RESUMO A técnica de Reflectometria no Domínio do Tempo (TDR) tem se destacado na avaliação da umidade do solo, por ser um método instantâneo, não destrutivo, preciso e pouco dependente dos fatores ambientais. Porém, pesquisadores têm enfatizado a necessidade de calibração específica e contínua para cada condição de manejo do solo. Portanto, ob
Rev. Ciênc. Agron.. Publicado em: 2019-03
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4. Movement patterns and home range in Diplomystes camposensis (Siluriformes: Diplomystidae), an endemic and threatened species from Chile
ABSTRACT We document movement patterns and home range of Diplomystes camposensis, an endemic and threatened freshwater catfish from Chile. We tracked the movements of seven individuals of different body size (13.5 to 19 cm SL) using portable radio telemetry equipment to investigate movement patterns in relation to day/night activity and habitat use in the Sa
Neotrop. ichthyol.. Publicado em: 29/03/2018
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5. Results from portable and of low cost equipment developed for detection of milk adulterations
Abstract This work presents the results of a device, MilkTech, developed to detect milk tampering, based on electrical measurements. The device indicates possible frauds by water, sodium chloride, caustic soda, ethyl alcohol and sodium bicarbonate. The advantages in relation to traditional methods are portability, low cost and detection of mixed frauds. The
Food Sci. Technol. Publicado em: 2017-12
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6. Sensitivity and Specificity of Portable Hearing Screening in Middle-Aged and Older Adults
Introduction Hearing screening allows the identification of individuals with hearing loss. Aim To determine the sensitivity and specificity of a portable hearing screening device in middle-aged and older adults using the manufacturer scoring and a scoring system proposed by the researchers. Methods In this transversal study, participants underw
Int. Arch. Otorhinolaryngol.. Publicado em: 2014-01
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7. Estudo clínico e eletromiográfico de músculos cervicais em mulheres com e sem disfunção temporomandibular / Clinical and electromyographic study of cervical muscles in women with and without temporomandibular dysfunction
The temporomandibular disorder (TMD) among many symptoms causes orofacial pain. It is also common, the incidence of neck pain complaint, which leads to overlapping signs and symptoms of temporomandibular joint (TMJ) and cervical spine. This study aimed to compare the patterns of electromyographic activity and the presence and severity of pain in the cervical
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/08/2011
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8. Desenvolvimento de um equipamento portátil e de sistema de análises em fluxo empregando multicomutação. Determinação fotométrica de ferro em águas de rios / Development of a portable equipment and a flow analysis system employing multicommutation. Photometric determination of iron in river waters
Iron is the most abundant element on Earth and plays an important role in biogeochemical cycles. In this work, an automatic analytical procedure was developed for the photometric determination of iron in river waters, employing a LED-based photometer and solenoid mini-pumps for solution handling. The proposed procedure was based on the reaction between iron
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/07/2011
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9. Cobertura morta de milho na umidade do solo e produtividade do feijoeiro irrigado em sistema plantio direto na região de Campinas-SP / Maize mulching in the soil moisture and productivity of irrigated dry bean under no-tillage system in Campinas-SP
Due to the potential of the no-tillage system (SPD) in the water and soil conservation combined with the need for research with irrigated crops in this system, mainly in the State of São Paulo, has been increasing the demand for information to minimize the degradation of hydrical resources, inappropriately used in the search for higher productivities. Howev
Publicado em: 2011
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10. Caracterização química elementar e identificação de fontes de obsidianas utilizando fluorescência de raios X com equipamento portátil (PXRF)
The study of archaeological and cultural heritage artifacts by means of analytical techniques with portable equipment has become increasingly routinely today. Various types of portable EDXRF equipment have been used in many different situations involving in situ analysis covering a wide range of geometries, detectors, current and voltage applied in the X-ray
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/03/2010
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11. Caracterização de minério de ferro por espectroscopia de reflectância difusa
The identification and quantification of the mineralogical phases present in iron ore is of crucial importance, both for quality control and well as for mine planning, processing, etc.. The element iron is usually found in the form of oxides or hydroxides, such as hematite (α- Fe2O3), goethite (α-FeOOH) and magnetite (Fe3O4), and their colors are a
Publicado em: 2010
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12. Distribution patterns and trophic characteristics of salmonids and native species inhabiting high altitude rivers of Pampa de Achala region, Argentina
The Pampa de Achala in central Argentina is an area with low fish species richness where salmonids were first introduced at the beginning of the twentieth century. A total of 19 rivers of different order were sampled during the low water period by using portable electrofishing equipment. We covered different identified macrohabitats (pools, riffles, glides a
Neotropical Ichthyology. Publicado em: 2010