Search results for " method"
showing 10 items of 10455 documents
Effect of different processing methods on the quality of obtained pomegranate juice
2019
Pomegranate juice has many health properties as the fruits contain anticarcinogenic, antimicrobial and antiviral compounds. Its consumption has greatly increased throughout the world in recent years due to the potential of its different components, polyphenols and anthocyanins mostly. Many studies have been performed on the pomegranate juice yield demonstrating its influence on the organoleptic and physicochemical properties of the juice. Commercial pomegranate juice production involves pressing the fruits. As a consequence, there is a need to investigate the pressing machine types and adjustment in order to maximize juice yield and enhance its health properties. The aim of this study was t…
Środowisko a antybiotykooporność izolatów Escherichia coli
2017
Pula farmaceutyków w środowisku powiększa się w wyniku kontaminacji wód, gruntów, ścieków, a także surowców pochodzenia zwierzęcego. Obecność antybiotyków w środowisku wpływa nie tylko na zahamowanie rozwoju mikroorganizmów, ale w stężeniu subinhibicyjnym może stymulować ekspresję genów wywołujących zjawisko antybiotykooporności. Celem pracy było porównanie wrażliwości na antybiotyki pałeczek Escherichia coli wyizolowanych z surowego mleka i zmieszanych odpadów drobiarskich. Materiał badawczy stanowiły szczepy E.coli wyizolowane z surowca mleczarskiego i zmieszanych odpadów drobiarskich. Ocenę wrażliwości izolatów na antybiotyki przeprowadzono metodą Kirby-Bauera. Profil oporności E. coli u…
Anticipated future of Latvia and Russia during a global economic crisis: A mixed methods perspective
2014
This cross-cultural study explored subjective predictors of more positive evaluation of the future of the country during a global socioeconomic crisis. A sequential mixed-method design was chosen for an exploration of students? expectations in Russia and Latvia as countries contrasting in macro-contextual conditions. In 2009, Study 1 was designed as a thematic analysis of essays on topic ?The Future of Latvia/Russia?. The results demonstrated that the future of a country is anticipated by taking into account external influences, the present of the country, and its perceived power and stability. In 2011, Study 2 involved these themes as independent variables in a multiple regression model. T…
Untargeted metabolomics of rind essential oils allowed to differentiate two closely related clementine varieties
2021
[EN] Chemical characterization of clementine varieties (Citrus clementina Hort. ex Tan.) essential oils (EO) can lead to variety identification and valorization of their potential use in food and aroma industries. The goal of this study was the chemometric discrimination between two very closely related and morphologically identical clementine varieties, Clemenules (NL) and Clemenpons (PO), based on their rind EO, to identify the differential volatile organic compounds (VOCs) and to determine their antioxidant capacity. EO rind volatile profile was determined by gas chromatography coupled to mass spectrometry in Citrus fruit at different ripening stages grown two independent years in two di…
Revista electrónica de investigación y evaluación educativa
2014
Resumen basado en el de la publicación Título, resumen y palabras clave en inglés y español Se pretende realizar inferencias sobre el campo de la Evaluación de Programas Educativos (E.P.E.), sintetizando ciertos patrones relativos a la metodología de sus investigaciones. En concreto, sobre el paradigma de fundamentación epistemológica, la metodología de investigación específica, el modelo evaluativo empleado, las técnicas de muestreo, los instrumentos empleados para la recogida de información y las técnicas de análisis de datos, el diseños de investigación, las amenazas a su validez, los agentes evaluadores y otras características metodológicas consideradas. Para ello, se revisaron 208 trab…
Le score de propension : un guide méthodologique pour les recherches expérimentales et quasi expérimentales en éducation
2016
La méthode du score de propension devient de plus en plus populaire pour estimer les effets causaux d’un programme d’intervention. Si les applications empiriques de cette méthode sont encore rares dans les recherches en éducation, des exemples de son utilisation se trouvent aisément dans d’autres disciplines. Cependant, sa mise en place soulève plusieurs questions. L’objectif de cet article est de fournir des éléments de réponses guidant le chercheur et l’évaluateur du domaine de l’éducation pour l’estimation et l’utilisation du score de propension. Les différentes étapes de son application sont présentées pas à pas : évaluation du biais de sélection, construction du score de propension et …
Metodologiâ arheologičeskih issledovanij mogilʹnikov v Polʹše
2021
Archeology, by being a science, has its own research problems. It tries to analyze them using an appropriate methodology. Archeology deals with discovering the human past, likewise the environment, where people live, work and die. We cannot say also, that this is a science, which discovers only objects, that are used by people, while it discovers also an archaeological context, i.e. the place where those objects had been deposited. At each archeological site researcher has to consider an area under the prism of three landscapes: the first one is a natural landscape, the second is settlement one, and the third is ceremonial one. The last landscape is associated mostly with the least studied …
Relaciones entre derecho y literatura en la historia argentina. Propuestas para su estudio desde la filosofía del derecho
2021
El presente trabajo se propone analizar los vínculos derecho y literatura en la historia argentina desde principios del siglo XIX hasta la actualidad. Desde los marcos teóricos que indagan la relación derecho-literatura, se estudiará las posibles articulación y funcionamiento de las producciones literarias en torno al espacio jurídico. Diferentes serán sus narraciones sobre el despliegue normativo, el uso de la fuerza, la protección de los cuerpos, la exclusión de la otredad y la construcción de la subjetividad. La tensión entre estética y normatividad abre nuevos canales de tematización y estudios interdisciplinarios desde la filosofía del derecho. The present work aims to analyze the link…
The rational use of albumin in patients with cirrhosis and ascites. A Delphi study for the attainment of a consensus on prescribing standards.
2004
Background. Ascites is one of the most frequent severe complications in patients with liver cirrhosis. The treatment of this chronic disease usually requires the prolonged use of albumin, frequently continued even after patients' discharge from the hospital. Aims. Aim of the study was to define a consensus among Italian physicians with regard to the use of albumin in patients with decompensated cirrhosis and ascites. Methods. The study adopted the Delphi technique to conduct the consensus activities. All controversial issues related to the use of albumin were identified by the experts' board and proposed to the 68 participating hepatology centres through two subsequent questionnaires. The q…
An Artificial Decision Maker for Comparing Reference Point Based Interactive Evolutionary Multiobjective Optimization Methods
2021
Comparing interactive evolutionary multiobjective optimization methods is controversial. The main difficulties come from features inherent to interactive solution processes involving real decision makers. The human can be replaced by an artificial decision maker (ADM) to evaluate methods quantitatively. We propose a new ADM to compare reference point based interactive evolutionary methods, where reference points are generated in different ways for the different phases of the solution process. In the learning phase, the ADM explores different parts of the objective space to gain insight about the problem and to identify a region of interest, which is studied more closely in the decision phas…