Search results for "PREP"
showing 10 items of 1334 documents
Lielās pergamentsēnes sastopamība komerciāli apstrādātos skujkoku celmos
2019
Pētījumā analizēta lielās pergamentsēnes (Phlebiopsis gigantea) augu aizsardzības līdzekļa “Rotstop” un vietējās lielās pergamentsēnes populāciju sastopamība parastās egles un parastās priedes celmos vismaz 90 dienas pēc to apstrādes ar “Rotstop”. Pētījumā analizētais materiāls ievāks 30 komerciāli izstrādātās mežaudzēs. No 205 egles un 72 priedes celmiem iegūtām koksnes ripām izdalīti 660 lielās pergamentsēnes izolāti. Tika pārbaudīts, vai izolāti ir somatiski saderīgi ar “Rotstop” sastāvā esošo lielās pergamentsēnes izolātu. No komerciāli apstrādātiem celmiem biežāk tika izdalīts “Rotstop” (502 jeb 76,6% izdalītie izolāti), salīdzinot ar vietējām lielās pergamentsēnes populācijām (158 jeb…
Teacher Educators’ Views on Inclusive Education and Teacher Preparation in Ghana
2016
The crucial role of initial teacher education programmes and teacher educators in preparing effective inclusive practitioners has been universally acknowledged. This study explored the attitudes of 125 teacher educators from four colleges of education towards inclusive education, their views and concerns about teacher preparation and the implementation of inclusive education in Ghana. The study found positive attitudes and considerable support for inclusive education. However, the majority of teacher educators were of the view that Ghana was inadequately prepared for the implementation of inclusive education. Their reasons and concerns were generally found to include: inadequate teacher pre…
Propuesta de investigación-acción para formar a estudiantes de magisterio en la enseñanza-aprendizaje de las ciencias como indagación. Primeros resul…
2021
Este trabajo de investigación tiene como finalidad presentar los resultados obtenidos a partir del diseño e implementación de un programa de formación (PF) de maestros con el que se busca favorecer la construcción de CDC del futuro maestro, dicho PF se configura en un espacio en el cual los contenidos a enseñar sean sujeto del análisis y discusión, se permita repensarlos y recrearlos didácticamente para ser enseñados. Las preguntas de investigación son: ¿El PF puede contribuir a mejorar el conocimiento científico (CC) del estudiante, así como su conocimiento sobre la naturaleza de la actividad científica (NdAC)? H1: El PF propuesto contribuirá a que los maestros en formación mejoren su CC s…
Nature of activating effect of two-step polymerization of propylene
1999
The prepolymerization effect on propylene polymerization in the presence of a TiCl 3 -based catalyst, modified by di-n-buthyl ether, was studied. The influence of prepolymerization on the electron spin resonance spectra and morphology of the catalyst, as well as the properties and the morphology of both prepolymer and regular polymerization products, was investigated. The polymer morphology was evaluated through scanning electron microscopy, polymer bulk density, and particle size distribution. Some evidence of the enhancement effect of prepolymerization on the catalyst activity and stereospecificity was obtained. No influence from prepolymerization was observed on molecular weight and its …
A discourse on human hair fibers and reflections on the conservation of drug molecules
1996
A gross discourse on human hair fibers and their formation is presented stressing the various interdisciplinary aspects, such as the morphological, biological, structural and biochemical data considered to be important in the field of hair analysis. An attempt is made to explain the incorporation of drug molecules during hair fiber formation by using the classical concepts of drug absorption based on lipoid theory and the pH-partition hypothesis as well as a modern biological approach on the permeability of cell membranes. In addition to the physiochemical considerations of the transport properties of a particular drug molecule such as a) the lipophilicity, which determines permeability thr…
Introducción a la investigación cualitativa en enseñanza
2014
Breve introducción a la investigación en la enseñanza. La yuxtaposición de dos paradigmas: cualitativo y positivista. La posibilidad de centrar la investigación en un problema en el contexto del aula. In Educational research, this text explore some of the assumptions related to the characteristics and notions of qualitative paradigm. Identify and propose models of classroom research.
Eco-friendly cavity-containing iron oxides prepared by mild routes as very efficient catalysts for the total oxidation of VOCs
2018
Iron oxides (FeOx) are non-toxic, non-expensive and environmentally friendly compounds, which makes them good candidates for many industrial applications, among them catalysis. In the present article five catalysts based on FeOx were synthesized by mild routes: hydrothermal in subcritical and supercritical conditions (Fe-HT, Few200, Few450) and solvothermal (Fe-ST1 and Fe-ST2). The catalytic activity of these catalysts was studied for the total oxidation of toluene using very demanding conditions with high space velocities and including water and CO2 in the feed. The samples were characterized by X-ray diffraction (XRD), scanning and high-resolution transmission electron microscopy (SEM and…
Developing a Conceptual Framework for Investigating Communication Supporting Community Resilience
2015
In crisis management, cooperation within the response network is seen as crucial. Usually, this network refers to authorities and nongovernmental organizations, such as the Red Cross. However, the authors argue that to improve societal resilience one should take a broader overview of the actors involved in crisis preparedness and mitigation, and also include the public. With this in mind, the role of communication is scrutinized and a conceptual framework developed as a starting point for further investigation into how communication may be developed to strengthen a community approach to crisis management that includes citizen groups in the broader response network. A model is presented alon…
Crisis preparedness through co-operation between municipalities and non-governmental organizations
2016
Julkissektorin toimijoiden kriisiviestintä ja kriisijohtaminen eroavat yksityisten toimijoiden vastaavasta viestinnästä, koska julkisen sektorin organisaatioilla on lakisääteinen velvollisuus pelastaa kansalaisia hädässä. Useissa kriisiviestinnän tutkimuksissa on keskitytty tutkimaan kriisejä organisaation tai johtamisen näkökulmasta. Tämän opinnäytetyön tavoitteena oli tutkia kriisiin varautumista kuntien ja vapaaehtoisjärjestöjen yhteistyön näkökulmasta. Tutkimuksen teoreettinen tausta on haettu CERC-mallista ja kriisiviestinnän tuloskortista (Crisis Communication Scorecard. Kriisiviestinnän tuloskortti on kehitetty ja testattu parantamaan kriisiviestinnän laatua ja samanaikaisesti kehitt…
Latvijā legālie kaņepju preparāti un to izmantošana Latvijas iedzīvotāju vidū
2022
Kaņepju preparāti ir gan vēsturiski, gan mūsdienās aktuāls līdzeklis, ko izmanto gan skaistumkopšanā, gan medicīniskiem nolūkiem, gan arī uzturā. Tie kļuvuši īpaši populāri kā uztura bagātinātāji ikdienas dzīvēs cilvēkiem, lai uzlabotu dzīves kvalitāti, papildinot uzturu ar vērtīgajām vielām, ko satur kaņepes. Kanabinoīdi no kaņepju auga uz organismu iedarbojas caur endokanabinoīdu sistēmu. Pētījuma mērķis ir apkopot datus par Latvijas iedzīvotāju informētību par legālajiem kaņepju preparātiem un par parametriem, kas saistīti ar šo preparātu lietošanu. Rezultāti liecina, ka arī starp Latvijas iedzīvotajiem kaņepju preparāti ir zināmi un tiek izmantoti dažādiem potenciāliem ieguvumiem, kurie…