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La parte aérea de Baccharis trimera (Less.) DC. utilizada como materia prima vegetal en la preparación de productos fitoterápicos, fue analizada por métodos botánicos, químicos, físicoquímicos y tecnológicos. Se...

The resolution of optimization problems is of great interest nowadays and has encouraged the development of various information technology methods to attempt solving them. There are several problems related to Software E...

The aim of present work was to compare the quality of different brands of gatifloxacin 200 mg tablets, collected from different retail pharmacies in the local market of Pakistan. Five different brands were characterized ...

The purpose of this study was to develop and validate analytical methods for determination of amlodipine besylate in tablets. Simple, accurate and precise liquid chromatographic and spectrophotometric methods are propose...

Apesar de não ser desejável, os produtos cosméticos podem ocasionar alguns efeitos adversos ao usuário. Tais efeitos podem ser decorrentes de fatores individuais como também pelo uso inadequado. Logo, a avaliação ...

Comparative studies of the relationship between two phenotypes, or between a phenotype and an environment, are frequently carried out by invalid statistical methods. Most regression, correlation, and contingency table me...

Agreement between two methods of clinical measurement can be quantified using the differences between observations made using the two methods on the same subjects. The 95% limits of agreement, estimated by mean differenc...

Fil: Follari, Roberto. Universidad Nacional de Cuyo. Facultad de Ciencias Políticas y Sociales; Argentina. Nos proponemos en este trabajo diseccionar algunos de los interrogantes que suele promover la investigación cua...

Fue utilizada la espectroscopía derivativa de orden uno, con el empleo de la técnica de "Ceros cruzados", para la cuantifícación simultánea de mezclas de sulfametoxazol y trimetoprima. Se informa acerca de la valida...

Se requería incorporar nuevos elementos al conocimiento acerca de la caracterización y control de la calidad de la vacuna antimeningocócica cubana VA-MENGOC BC® para demostrar su seguridad y elevar su competitividad ...

As time goes on, due to the growing specialization and complication of problems, Enterprise Economy is coming to be a special branch of science which, from its beginning, has had an operational character. The difference,...

El objetivo de este trabajo es mostrar que una toma de decisión puede ser optimizada realizando una simulación exploratoria previa a un estudio de bioequivalencia. Los métodos estadísticos para bioequivalencia se apl...

Se evaluaron tres métodos espectrofotométricos para la determinación de compuestos fenólicos totales en propóleos de la provincia de Tucumán, Argentina, mediante los métodos de Folin-Ciocalteau, azul de Prusia y o...

Eight direct spectrophotometric methods for determination of ganciclovir has been developed and validated. These methods were based on the oxidation of the drug by different inorganic oxidants: ceric ammonium sulphate, p...

Abstract Hypothesis‐testing methods for multivariate data are needed to make rigorous probability statements about the effects of factors and their interactions in experiments. Analysis of variance is particularly powe...

Previous article Next article An Algorithm for Least-Squares Estimation of Nonlinear ParametersDonald W. MarquardtDonald W. Marquardthttps://doi.org/10.1137/0111030PDFPDF PLUSBibTexSections ToolsAdd to favoritesExport Ci...

(NOTE: Each chapter begins with an Introduction, and concludes with Exercises and References.) I. GETTING STARTED. 1. Aspects of Multivariate Analysis. Applications of Multivariate Techniques. The Organization of Data. D...

In this paper we study both market risks and nonmarket risks, without complete markets assumption, and discuss methods of measurement of these risks. We present and justify a set of four desirable properties for measures...

BACKGROUND: In systematic reviews and meta-analysis, researchers often pool the results of the sample mean and standard deviation from a set of similar clinical trials. A number of the trials, however, reported the study...

Introduction - Norman K Denzin and Yvonna S Lincoln The Discipline and Practice of Qualitative Research PART ONE: LOCATING THE FIELD Qualitative Methods - Arthur J Vidich and Stanford M Lyman Their History in Sociology a...

The core methods in today's econometric toolkit are linear regression for statistical control, instrumental variables methods for the analysis of natural experiments, and differences-in-differences methods that exploit p...

There is a great demand for perceptual effort ratings in order to better understand man at work. Such ratings are important complements to behavioral and physiological measurements of physical performance and work capaci...

Phylogenies are extremely useful tools, not only for establishing genealogical relationships among a group of organisms or their parts (e.g. genes), but also for a variety of research once the phylogenies are estimated. ...

AIM: The aim of this paper is to distinguish the integrative review method from other review methods and to propose methodological strategies specific to the integrative review method to enhance the rigour of the process...