Search results for "IFT"
showing 10 items of 2193 documents
Analysis of Electrical Loads and Strategies for Increasing Self-Consumption with BIPV Case study : Skarpnes Zero-Energy House
2017
Master's thesis Renewable Energy ENE500 - University of Agder 2017 At Skarpnes village (Southern Norway), the houses as zero energy buildings (ZEB) are installed with Building Integrated Photovoltaic (BIPV) systems, and these houses are not containing smart control of equipments. The aim of such buildings is that the amount of electrical energy produced is the same as that consumed in the buildings on an annual basis. In this thesis, the main objective is to analyse the methods for increasing self -consumption in BIPV, by minimizing the cost of purchasing electricity from the grid at time with no PV production, and maximizing the utilization of solar PV generated power, which reduces the po…
Minimum detection limits and applications of proton and helium induced X-ray emission using transition-edge sensor array
2017
Abstract We have determined minimum detection limits, MDLs, for elements 14 ⩽ Z ⩽ 86 using a transition-edge sensor array, TES array, and as a comparison using an Amptek X-123SDD silicon drift detector, SDD. This was done using a 3 MeV proton beam and a 5.1 MeV helium beam. MDLs were determined for a thin film sample on top of C substrate, and for a bulk sample containing mostly Al. Due to the higher peak-to-background ratio, lower detection limits were obtainable using the TES array for most of the elements. However, for elements 30 ⩽ Z ⩽ 45 the performance of the TES array was not as good as the SDD performance. This is due to the limitations of the TES used at energies >10 keV. The great…
Unraveling the prominent role of the Rh/ZrO2-interface in the water-gas shift reaction via a first principles microkinetic study
2018
The industrially important water–gas-shift (WGS) reaction is a complex network of competing elementary reactions in which the catalyst is a multicomponent system consisting of distinct domains. Herein, we have combined density functional theory calculations with microkinetic modeling to explore the active phase, kinetics, and reaction mechanism of the WGS over the Rh–ZrO2 interface. We have explicitly considered the support and metal and their interface and find that the Rh–ZrO2 interface is far more active toward WGS than Rh(111) facets, which are susceptible to CO poisoning. CO2 forming on the zirconia support rapidly transforms into formate. These findings demonstrate the central role of…
The ALHAMBRA survey: Discovery of a faint QSO at z = 5.41 (Research Note)
2013
Aims. We aim to illustrate the potentiality of the Advanced Large, Homogeneous Area, Medium-Band Redshift Astronomical (ALHAMBRA) survey to investigate the high-redshift universe through the detection of quasi stellar objects (QSOs) at redshifts higher than 5. Methods. We searched for QSOs candidates at high redshift by fitting an extensive library of spectral energy distributions – including active and non-active galaxy templates, as well as stars – to the photometric database of the ALHAMBRA survey (composed of 20 optical medium-band plus the 3 broad-band JHKs near-infrared filters). Results. Our selection over ≈1 square degree of ALHAMBRA data (∼1/4 of the total area covered by the surve…
Hoitoalan esimiesten keinot ja haasteet epätyypillistä työaikaa tekevien alaistensa hyvinvoinnin edistämisessä
2016
TIIVISTELMÄ Miika Klinga & Ville Leskinen (2016). Hoitoalan esimiesten keinot ja haasteet epätyypillistä työaikaa tekevien alaistensa hyvinvoinnin edistämisessä. Terveystieteiden laitos, Jyväskylän yliopisto, terveyskasvatuksen pro gradu-tutkielma, 63 s., 4 liitettä. Tutkimuksen tarkoituksena oli selvittää kahdessa eri sairaalaorganisaatiossa työskentelevien hoitoalan esimiesten kokemuksia ja näkemyksiä epätyypillisen työajan asettamista haasteista ja keinoista, joita heillä on käytössään vuorotyötä tekevien alaistensa hyvinvoinnin edistämisessä. Lisäksi tutkittiin millaisia uusia keinoja esimiehet haluaisivat ottaa käyttöönsä alaistensa hyvinvointia edistämään. Tutkimus toteutettiin laadul…
Gościnność w kulturze/kulturach Maghrebu
2018
The paper attempts to investigate hospitality in various dimensions and contexts. The introduction includes a description of terminology in Polish and French, together with the relationship between hospitality and culture. The next part focuses on hospitality analysed from the point of view of philosophy, anthropology and sociology. The generał discussion of hospitality as a wide sociocultural phenomenon serves as a basis tor the presentation of constructs connected with places both private and public, architecturally specific, and inspired by religion, tradition and culture. The realistic dimension expressed in ceremonies connected with hospitality, celebrations and gift exchanges tums out…
Cationic and Anionic Impact on the Electronic Structure of Liquid Water
2017
Hydration shells around ions are crucial for many fundamental biological and chemical processes. Their local physicochemical properties are quite different from those of bulk water and hard to probe experimentally. We address this problem by combining soft X-ray spectroscopy using a liquid jet and molecular dynamics (MD) simulations together with ab initio electronic structure calculations to elucidate the water–ion interaction in a MgCl2 solution at the molecular level. Our results reveal that salt ions mainly affect the electronic properties of water molecules in close vicinity and that the oxygen K-edge X-ray emission spectrum of water molecules in the first solvation shell differs signi…
The Coupled Magmatic and Hydrothermal Systems of the Restless Aluto Caldera, Ethiopia
2020
Seismicity can be used to better understand interactions between magma bodies, hydrothermal systems and their host rocks—key factors influencing volcanic unrest. Here, we use earthquake data to image, for the first time, the seismic velocity structure beneath Aluto, a deforming volcano in the Main Ethiopian Rift. Traveltime tomography is used to jointly relocate seismicity and image 3D P- and S-wave velocity structures and the ratio between them (V P/V S). At depths of 4–9 km, the seismicity maps the top of a large low velocity zone with high V P/V S, which we interpret as a more ductile and melt-bearing region. A shallow (<3 km) hydrothermal system exhibits low seismic velocities and ve…
Hej Maria Svensson! Hur inleder och avslutar förstaårssstudenter i svenska sina e-brev?
2011
Tutkielmani tarkoitus oli selvittää, miten ensimmäisen vuoden ruotsin pääaineopiskelijat käyttävät tervehdysfraaseja ja ilmaisevat muita henkilökohtaiselle kirjeelle tyypillisiä kulttuurisidonnaisia konventioita erilaisissa sähköpostiviesteissä. Lisäksi tarkastelin, ovatko opiskelijoiden käyttämät fraasit sopivia kyseisessä kontekstissa ja aiheuttaako sopivan ilmauksen valitseminen ongelmia. Tutkimuksessani analysoin aineistoa sekä kvantitatiivisin että kvalitatiivisin menetelmin. Materiaalina tutkimuksessani oli Topling-projektin yhteydessä syksyllä 2010 kerätty aineisto, joka koostui 69 sähköpostiviestistä. Opiskelijoiden tehtävänä oli kirjoittaa sähköpostiviesti ruotsinkieliselle ystäväl…
Swift un Java valodu salīdzinājums iOS un Android lietotņu izstrādāšanai
2020
Bakalaura darba galvenais mērķis ir izpētīt mobilas lietotnes izveides dažādību iOS un Android operētājsistēmās, pieejamās programmēšanas valodas un lietotnes uzbūves principus, kā arī izveidot piemērus, kur būtu redzama būtiska atšķirība starp lietotnes izveidošanu. Darbā autors salīdzina divas operētājsistēmas, valodas un lietotnes. Lietotņu salīdzināšana tiek veikta pēc autora noteiktiem kritērijiem. Izanalizējot visus datus, tiek formulēti ieteikumi izstrādātājam operētājsistēmas un programmēšanas valodas izvēlei. Bakalaura darba ietvaros autors sniedz ieskatu abu operētājsistēmu izstrādes vidēs un valodās un salīdzina tās. Lai izveidotu detalizētāku analīzi, tika izveidotas divas lieto…