Validation Of Method
Mostrando 25-36 de 1095 artigos, teses e dissertações.
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25. 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
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26. EFFECT OF WAVELET DE-NOISING ON THE CLASSIFICATION OF PIG BEHAVIOUR
ABSTRACT To efficiently eliminate the noise generated by the triaxial accelerometer when collecting pigs’ behavioural data, this paper adopted SNR and MSE as the indexes to evaluate the de-noising effect of pigs’ acceleration signal under various combinations of wavelet basis, decomposition layer, threshold rule and threshold function. Based on the optim
Eng. Agríc.. Publicado em: 2021-05
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27. Validation of an UHPLC-MS/MS Method for the Determination of Malachite Green, Leucomalachite Green, Crystal Violet, and Leucocrystal Violet in Shrimp, Fish, and Salmon Muscle Using a Modified QuEChERS Approach
A quantitative and confirmatory method for detecting the presence of triphenylmethane dyes in shrimp muscle using ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) and a quick, easy, cheap, effective, rugged and safe (QuEChERS) extraction approach was validated. The method exhibited linearity and selectivity and the coeffici
J. Braz. Chem. Soc.. Publicado em: 2021-04
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28. Development and Validation of a Gas Chromatographic Method for the Quantification of Minor Alkaloids in Cocaine
The quantification of minor alkaloids in seized cocaine can provide information for drug profiling and law enforcement initiatives. This work presents the development and validation of an analytical method to quantitate minor alkaloids in cocaine samples using gas chromatography with flame ionization detector, after derivatization. The method was validated i
J. Braz. Chem. Soc.. Publicado em: 2021-04
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29. OTIMIZAÇÃO E VALIDAÇÃO DE MÉTODO ENZIMÁTICO SEMIQUANTITATIVO SIMPLES E DE BAIXO CUSTO PARA A BUSCA DE INIBIDORES DE CISTEINO PROTEASES
Cysteine proteases are an important class of enzymes involved in several essential biological processes. For this reason, these enzymes are important therapeutic targets, and therefore can be used in enzymatic assays for the search of hits. The most widely used methods in the search of enzyme inhibitors are spectrophotometric, however they have relatively hi
Quím. Nova. Publicado em: 2021-04
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30. Reforming theory of planned behavior to measure money management intention: a validation study among student debtors
Abstract Purpose This study aims to validate the money management intention screening questionnaire under the framework of theory of planned behavior, which includes attitude, subjective norms, perceived behavioral control and intention. Design/methodology/approach A total of 919 undergraduate students with loans were randomly selected and grouped into fou
RAUSP Manag. J.. Publicado em: 2021-03
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31. Adaptation of the Youth Connectedness to Provider scale to assess the relationship between health professionals and adolescent and young adult patients
Abstract Objective: The aim was to adapt an instrument that evaluates the relationship between young individuals and health professionals to the Brazilian population, which will be called the Escala de Avaliação de Vínculo entre Jovens e Profissionais de Saúde (Youth Connectedness to Provider scale). Method: The questionnaire known as the Youth Connect
J. Pediatr. (Rio J.). Publicado em: 2021-02
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32. SIMPLE AND FAST DETERMINATION FOR GAMMA-HYDROXYBUTYRATE (GHB) IN URINE SAMPLE BY LLE AND GC-MS
Gamma-hydroxybutyrate (GHB) is a depressant of the central nervous system able to promote disinhibition, anterograde amnesia and its use is related to Drug-Facilitated Crimes (DFC). Urine is the biological matrix of choice for toxicological analysis in victims of rape and/or theft in suspected victims of DFC. The aim of this work was the development of a sim
Quím. Nova. Publicado em: 2021-02
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33. A dimensional measure of schizotypy: cross-cultural adaptation and validation of the Oxford-Liverpool Inventory of Feelings and Experiences short version for Brazilian Portuguese (O-LIFE-S)
Abstract Introduction The Oxford-Liverpool Inventory of Feelings and Experiences (O-LIFE) is a widely-used scale, and the first to include a dimensional approach to understanding schizotypy. Objective To adapt the short version of the O-LIFE (O-LIFE-S) into Brazilian Portuguese. Method a) Two independent bilingual professionals translated the original
Trends Psychiatry Psychother.. Publicado em: 2020-12
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34. Multiresidue Determination of Endocrine Disrupting Compounds in Sewage Treatment Plants (SPE-HPLC-DAD)
This work focuses on the validation and application of solid phase extraction followed by high-performance liquid chromatography (SPE-HPLC) analysis of important endocrine disruptors compounds (EDC) from different classes in highly complex wastewater matrix. The endocrine disruptors investigated included three different categories: pharmaceuticals (sulfameth
J. Braz. Chem. Soc.. Publicado em: 2020-12
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35. Metamaterial-Fractal-Defected Ground Structure Concepts Combining for Highly Miniaturized Triple-Band Antenna Design
Abstract In this paper, a novel method is proposed to increase the gain and radiation efficiency of a compact patch antenna. By employing a combination of three efficient techniques, we have developed a multi-resonance L-DGS antenna with a high gain of 5 dB and an efficiency of 99.6%. Furthermore, a novel compact Double Negative metamaterial unit cell and it
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-12
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36. Os historiadores e as epidemias na América Latina
ABSTRACT Objective: To develop a self-reporting questionnaire, namely the Blood Donor Satisfaction Questionnaire (BDSQ) in Brazilian Portuguese, to assess the blood donor satisfaction with the service provided by a blood bank. Method: This study was carried out in three stages: 1) a preliminary version of the instrument was proposed, based on a revision of
Hist. cienc. saude-Manguinhos. Publicado em: 2020-10