35 research outputs found

    The Shared Experiences Of Educators In Grades 7–12 Who Implement Lessons In Social–Emotional Learning Curriculum

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    Social–emotional learning (SEL) is used in public school classrooms throughout the United States. The problem that this researcher addressed in this study was that minimal understanding exists of the lived experiences of teachers who implement SEL in Colorado public schools in Grades 7–12. The purpose of this qualitative phenomenological study was to explore and to provide a clearer understanding of the lived experiences of six educators who implement SEL in Grades 7–12 in Colorado public schools. The study fills a gap in literature in understanding the experiences of teachers who use SEL in middle and high school. The literature review revealed three themes: (a) the importance of teachers, (b) the evolution of SEL, and (c) the significance of SEL. Six teachers from public schools across Colorado participated in semi-structured interviews via Zoom. Thematic analysis was used to find patterns and code data. In this study, this researcher found four main themes: (a) teacher buy-in, (b) identify emotions, (c) safety and trust, and (d) value of relationships. Data collected also revealed subthemes: (a) the need for students to identify emotions through vocabulary, self-awareness, and coping skills; (b) build safety and trust in classrooms, and (c) the value of relationships in classrooms between students and teachers. From the findings, this researcher recommended action for improvements in professional development and coaching for educators who implement SEL. Other recommendations for future study were presented for continued improvement in the field of education for students and teachers

    Identifizierung und Analyse chlamydosporenspezifischer Gene in Candida albicans und Candida dubliniensis

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    Candida albicans und Candida dubliniensis sind humanpathogene Hefepilze, die als einzige Vertreter im Genus Candida in der Lage, echte Hyphen und Chlamydosporen zu produzieren. Während die Hyphenbildung bereits umfangreich untersucht wurde, ist über die Chlamydosporenbildung und deren genetische Kontrolle bislang wenig bekannt. Ziel dieser Arbeit war es, neue Einblicke in die Chlamydosporenentwicklung zu bekommen. Dafür wurde mittels RNA-Sequenzierung und DNA-Microarrayanalysen erstmals ein globales Transkriptionsprofil von C. albicans und C. dubliniensis während der Chlamydosporenausbildung erstellt. Ein Hauptziel der Arbeit bestand dabei in der Identifizierung von Proteinen, die spezifisch für Chlamydosporen sind, um einerseits die Rolle dieser Faktoren zu untersuchen, andererseits um Markerproteine zu erhalten, die bei der Erforschung der Funktion von Chlamydosporen eingesetzt werden könnten. In der vorliegenden Arbeit gelang es schließlich erstmals Genexpressionsprofile zu erstellen, die auf eine Gruppe von putativ chlamydosporenspezifischen Genen deuten. Mit Hilfe von GFP-Reporterstämmen konnten die Gene Ca/CdCSP1 und Ca/CdCSP2 ( Chlamydosporenspezifisches Protein 1 und 2) spezifisch und exklusiv in der Zellwand von C. albicans- bzw. C. dubliniensis-Chlamydosporen lokalisiert werden

    Biochemistry start-up terpenox: competition-s limitations and our solution

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    We are presenting the business plan for TerpenOX, a ground-breaking biochemistry start-up developing a novel process for menthol synthesis based on a recent scientific breakthrough at the University of Vienna. First, we are going to compare and contrast each of the established methods of menthol production. After establishing possible limitations and identifying opportunities for innovation we are introducing our unique and novel solution as well as outline a roadmap of how we are going to develop it

    68Ge/68Ga radioisotope generator as a source of radiotracers for water flow investigations

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    Radiotracer experiments on the model of rectangular settler with a volume of 3 m3, with a consecutive application as a tracer of the aqueous phase fluoresceine (representative tracer of water), eluate from a 68Ge/68Ga radioisotope generator (0.1 N HCl solution) and chelates after Ga ions complexation with 1,4,7-triazacyclononane-1,4,7-triacetic acid (NOTA) and 1,4,7,10-tetrazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) were carried out. The obtained residence time distribution (RTD) functions indicate that only the complex compounds of gallium are stable in the water phase and are not adsorb on the vessel walls, so they can be recommended as tracers of the water phase

    Stable isotope deuterium as a natural tracer of mixing processes in rivers

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    The possibility of application of naturally existing differences in isotope contents 18O/16O, 2H/1H in waters for investigation of transport and mixing of various waters in the tributary-river system is presented. Experiments carried out on the Bug-Narew rivers-Zegrze Lake and the BugoNarew-Vistula rivers systems have indicated that the hydrogen isotope ratio 2H/1H can be used as an intrinsic tracer of natural mixing processes occurring in rivers. The IRMS methodology was used for isotope ratio measurement of water samples. The degrees of water mixing as a function of distance from the confluence point of rivers were determined. The obtained results indicate that in water systems where the natural differences in ?2H are higher than 5‰ this technique can replace the time-consuming and expensive dye (or radiotracer) dispersion tests for evaluation of pollutant transport in rivers

    Optimization of mixer-distributor parameters with the application of tracer and CFD methods

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    Przedstawiono komplementarne zastosowanie metod znacznikowych i CFD do opisu i optymalizacji parametrów pracy mieszacza/dystrybu-tora ścieków z różnych źródeł uśredniającego ich skład chemiczn

    Research into production of biogas from maize silage in a batch reactor with hydromixing

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    Przedstawiono badania fermentacji metanowej kiszonki kukurydzy z wykorzystaniem konsorcjów o różnym składzie mikroorganizmów: (1) konsorcjum mikroorganizmów wyizolowane z gnojowicy bydlęcej (GB), (2) konsorcjum mikroorganizmów wyizolowane z biogazowni rolniczej (BF). Badania prowadzono w reaktorze okresowym z hydromieszaniem. Dla identycznych warunków prowadzenia procesu uzyskano większą ilość biogazu dla konsorcjum mikroorganizmów.Research of anaerobic digestion of maize silage using consortia of different composition of microorganisms: (1) consortium of microorganisms: (1) consortium of organisms isolated from cattle manure GB) and (2) consortium of microorganisms isolated from biogas plant (BF) are presented in the paper. The study was carried out in a batch reactor with hydromixing. At the same process conditions, the higher quantity of biogas was obtained in anaerobic digestion with microorganism consortium BF

    Optimization with CFD method application of biomass suspension mixing in fermentor

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    Jednym z podstawowych parametrów wpływających na wydajność procesu fermentacji metanowej jest intensywność i struktura mieszania zawiesiny w fermentorze. Z wykorzystaniem metod obliczeniowej mechaniki płynów wyznaczono strukturę przepływu i mieszania wymuszonego systemem zatopionych strug w prostopadłościennym fermentorze o objętości cieczy około 470 m3. Określono parametry i zasięg mieszania wzdłuż osi fermen-tora oraz mieszania pionowego wywoływanego systemem pomp cyrkulapych. Określono optymalną lokalizację napływu strug oraz ich natężenia !epływu.The intensity and structure of biomass mixing in fermentor are the one of principal parameters which determine the yield of biogas production practises. Using the Computational Fluid Dynamics method the structure of flow and suspension mixing in rectangular fermentor with liquid phase volume 470 m3 were determined. The suspension motion inside the fermentor was extorted by system of jets. The range of jets located in the axe of fermentator in bottom zone and jets caused by system of pumps which transport vertically the suspension from bottom up to liquid surface was established. The optimal flow rates values and localization of jets inputs were determined

    Membrane installation for biogas enrichment – Field tests and system simulation

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    The paper presents results of the field tests on membrane biogas enrichment performed with the application of mobile membrane installation (MMI) with the feed stream up to 10 Nm3/h. The mobile installation equipped with four hollow fibre modules with polyimide type membranes was tested at four different biogas plants. Two of them were using agricultural substrates. The third one was constructed at a municipal wastewater plant and sludge was fermented in a digester and finally in the fourth case biogas was extracted from municipal waste landfill site. Differences in the concentration of bio-methane in feed in all cases were observed and trace compounds were detected as well. High selectivity polyimide membranes, in proper module arrangements, can provide a product of high methane content in all cases. The content of other trace compounds, such as hydrogen sulphide, water vapour and oxygen on the product did not exceed the values stated by standard for a biogas as a vehicle fuel. The traces of hydrogen sulphide and water vapour penetrated faster to the waste stream enriched in carbon dioxide, which could lead to further purification of the product – methane being hold in the retentate (H2O > H2S > CO2 > O2 > CH4 > N2). In the investigated cases, when concentration of N2 was low and concentration of CH4 higher than 50%, it was possible to upgrade methane to concentration above 90% in a two-stage cascade. To performsimulation ofCH4 andCO2 permeation through polyimide membrane,MATLABwas used. Simulation program has included permeation gaseous mixture with methane contents as observed at field tests in the range of 50 and 60% vol. The mass transport process was estimated for a concurrent hollow fibre membrane module for given pressure and temperature conditions and different values of stage cut. The obtained results show good agreement with the experimental data. The highest degree of methane recovery was obtained with gas concentrating in a cascade with recycling of the retentate
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