Search results for "TKE"

Primjena ekstrakta proteina sirutke u proizvodnji smrznutog mliječnog deserta

2018

The aim of this work was to substantiate the use of whey protein extract (WPE), a by-product of dairy industry, combined with different berry purees in the formulation of a whipped frozen dairy dessert (WFDD). After freezing, the swelling ability of WPE decreased significantly while at higher temperatures of the dispersion medium, the degree of swelling increased. A mixture containing 55±2 % WPE and 45±2 % milk presented a homogeneous consistency while the further processing did not improve the structure of the mixture. Final formulations of WFDD containing different berry purees (i.e. 10 % black¬currant puree, 25 % cherry puree, or 30 % strawberry puree) were proposed for which the nutriti…

Intermolecular oxidative dehydrogenative 3,3′-coupling of benzo[b]furans and benzo[b]thiophenes promoted by DDQ/H+: total synthesis of shandougenine B

2016

With an excess of a strong acid, 2,3-dichloro-5,6-dicyano-1,4-quinone (DDQ) is shown to promote metal-free intermolecular oxidative dehydrogenative (ODH) 3,3'-coupling of 2-aryl-benzo[b]furans and 2-aryl-benzo[b]thiophenes up to 92% yield as demonstrated with 9 substrates. Based on the analysis of oxidation potentials and molecular orbitals combined with EPR, NMR and UV-Vis observations, the studied reaction is initiated by a DDQ-substrate charge transfer complex and presumably proceeds via oxidation of the substrate into an electrophilic radical cation that further reacts with another molecule of a neutral substrate. The coupling reactivity can easily be predicted from the oxidation potent…

Computational studies of torsional properties of single-walled carbon nanotubes

2010

Current thesis presents computational studies of the torsional twist in single walled carbon nanotubes (SWCNTs). Since SWCNTs can be viewed as rolled up graphene sheets, our aim is to explain their torsion constants via shear mod- ulus of graphene in pristine, and single- and double vacancy cases. In addition, fundamental energy gap response to torsion is investigated. Calculations of defected structures is computationally expensive as it requires larger simula- tion cell with large number of atoms. To reduce the cost of computations we take the advantage of chiral symmetry of nanotubes instead of translational one, and faster performance of density-functional tight-binding method compared …

Äitiyskeskustelun paikka : kirjoittajien suhtautuminen vauvakuume-keskusteluketjuun ja sen sisällä tapahtuvaan toimintaan Suomi24.fi:n keskustelupals…

2016

Maisterintutkielmassani tarkastelen, kuinka äitiys- ja vauva-aiheiseen internetin keskusteluketjuun kirjoittavat arvottavat tekstejään sekä millaisia äitiyteen ja äitiyskeskusteluun liittyviä representaatioita ja diskursseja teksteissä syntyy. Aineistonani on Suomi24.fi-keskustelupalstan nuorten äitien vauvakuume-aiheinen keskusteluketju, jota analysoin kriittisen diskurssianalyysin keinoin. Tutkimukseni sijoittuu kielitieteellis-yhteiskunnallisen diskurssintutkimuksen kenttään. Pohjaan sekä tutkimukseni teorian että metodit Hallidayn systeemis-funktionaaliseen kieliteoriaan. Sovellan analyysissani suhtautumisen teoriaa (appraisal theory), jota käytän työkaluna representaatioiden tutkimisee…

Experimental studies on the detachment of multi-walled carbon nanotubes by a mobile liquid interface

2017

International audience; Retention and detachment of colloidal particles from surfaces is often considered only in terms of spontaneous chemical dispersion when the surface is already fully submerged. Nevertheless, interfacial processes, where the particles are caught on a mobile liquid contact line by capillary effects are ubiquitous. Theoretical description of such interfacial processes exist for spherical microcolloids, while for anisotropic shapes the literature is limited. Arc-discharge synthesized multiwalled carbon nanotube (MWNT) material contains besides the very anisotropic tubes also irregular amorphous carbon particles (ACP) that both are strongly hydrophobic. As a water–air–soli…

O "wynaturzeniach" w literaturze białoruskiej. Trudy drogi twórczej Uładzimira Karatkieviča

2017

There is one overriding objective in the literary oeuvre by U. Karatkevitch, namely that the writer tried to enliven and strengthen the weakened sense of national identity among the Belarusians. In the 1950s and the 1960s, it was far from easy in the USSR to encourage and propagate genuine and true Belarusian history, the beauty of the Belarusian language and Belarusian national identity. For his activities in this field, Karatkevitch was often stigmatized and punished. The article presents the hardships of the Belarusian writer, his struggles against censorship as well as unfavourable literary critics.

Keskipohjalaiset kulttuuriperintöreitit

2020

Patterns of Working Time and Work Hour Fit in Europe

2018

The requirements for more flexible and lean forms of production that are able to adapt to demand cycles, both quantitatively and functionally, are common in all advanced economies. At the same time, the flexibilization of working times and work places has become an increasing focus for the analysis of quality of work and life (i.e. work-life balance). This chapter approaches flexibilization as a transition from an industrial to a post-industrial working time regime. The new post-industrial working time regime is usually characterized by deregulation of collective norms, diversification of the length (short and long hours) and pattern of working time (unsocial hours), increasing work intensi…

Surface plasmon effects on carbon nanotube field effect transistors

2011

Herein, we experimentally demonstrate surface plasmon polariton (SPP) induced changes in the conductivity of a carbon nanotube field effect transistor (CNT FET). SPP excitation is done via Kretschmann configuration while the measured CNT FET is situated on the opposite side of the metal layer away from the laser, but within reach of the launched SPPs. We observe a shift of 0.4 V in effective gate voltage. SPP-intermediated desorption of physisorbed oxygen from the device is discussed as a likely explanation of the observed effect. This effect is visible even at low SPP intensities and within a near-infrared range. peerReviewed

Individual arc-discharge synthesized multiwalled carbon nanotubes probed with multiple measurement techniques

2020

Arc-discharge synthesized multiwalled carbon nanotubes (AD-MWNT), or related MWNTs, exhibit a good quality compared to the more common type of MWNT synthesized by catalytic chemical vapor deposition methods. Yet experimental measurements on these are rather few and typically have not correlated data from different measurement techniques. Here, the authors report Raman spectroscopy, scanning probe microscopy, conductivity measurements, and force microscopy on single AD-MWNTs. The results demonstrate the high quality of AD-MWNTs and are compatible with the view of them as the best approximation of MWNTs as an assembly of defect-free concentric individual single-walled carbon nanotubes. The au…