Search results for "TVE"
showing 10 items of 786 documents
Проблемы создания автоматизированных систем управления экономикой. Выпуск 2
1975
Secondo Palazzo Utveggio, via XX Setembre, Palermo, 1901-1903, Ernesto Basile
2014
SECONDO PALAZZO UTVEGGIO, VIA XX SETTEMBRE, PALERMO 1901-1903, ERNESTO BASILE Preceduta dai progetti per il Villino Vincenzo Florio e per il ciclo di architetture funerarie del biennio 1899-1900, la seconda Casa Utveggio si pone quasi a consuntivo della sua prima stagione sperimentale di modernista “riorganizzazione del visibile” inaugurata nel 1897; al tempo stesso contiene in nuce quelle valenze estetiche e quell’indirizzo metodologico che connotano il suo secondo periodo di originale maturità modernista esteso per poco più di un lustro. Il disegno acquarellato del fronte sulla via XX Settembre, antecedente alla tavola a matita su carta Fabriano contenente anche l’alzato dell’intero prosp…
Latvijas evaņģēliski luteriskās Baznīcas episkopāts padomju varas apstākļos (1944.-1989.)
2021
Maģistra darbā: Latvijas evaņģēliski luteriskās Baznīcas episkopāts padomju varas apstākļos (1944. – 1989.) tiek analizēta LELB darbība to skatot caur arhibīskapu T. Grīnberga, K. Irbes, G. Tūra, J. Matuļa un Ē. Mestera darbības prizmu padomju okupācijas laikā. Ateistiska režīma apstākļos Baznīcas mijiedarbībai ar valsti, Baznīcas pastāvēšanai un spējai veikt savu kalpošanas misiju īpaša nozīme bija arhibīskapu personībām, viņu prasmei rast kompromisu ar padomju varu. Katra arhibīskapa amata funkciju laikā PSRS bija atšķirīga reliģijpolitika. Maģistra darbā tiek apskatīts kā arhibīskapi katrs savā veidā, centās Baznīcas pastāvēšanas vārdā mijiedarboties ar padomju varu visatsķirīgākajos aps…
Acu-roku koordinācijas saistība ar redzes funkcijām
2018
Maģistra darbs ir uzrakstīts latviešu valodā uz 42 lapaspusēm. Tas satur 23 attēlus, 4 tabulas, 4 pielikumus un 42 atsauces uz literatūras avotiem. Darba mērķis: Noskaidrot pirmsskolas un sākumskolas vecuma bērnu sniegumu acu-rokas koordinācijas testā saistībā ar stereoredzes uztveri. Darba uzdevumi: Noteikt acu–rokas koordinācijas sniegumu bērniem ar DTVP-2 testu. Novērtēt stereoredzes korelāciju ar acu–rokas koordinācijas testa sniegumu. Izanalizēt DTVP-2 testa rezultātus ar programmu ImageJ. Darba metodika: Pētījumā tika novērtēts 56 bērnu redzes asums, stereoredze ar TNO testu, sniegums acu-rokas koordinācijas testā. Secinājumi: DTVP-2 testa izpildes koeficientam ir saistība ar stereore…
Burtveidolu kompozīcijas kā grafiskās izteiksmes līdzeklis
2017
Burtu nozīme dizainā ir nenoliedzami milzīga. Bieži vien tas ir svarīgākais elements dizaina projektā. Dizaineri iegulda daudz laika un darba, lai burtveidolus padarītu viegli uztveramus. Burtus pielieto ne tikai, lai nodotu informāciju avīzēs, grāmatās, žurnālos vai plakātos. No tiem var veidot kompozīcijas, kurās interesanta dizaina burti pastiprina teksta vēstījumu. Šobrīd t-krekls ir viens no plašāk izmantotajiem apģērba gabaliem tāpēc ir sastopami daudzi kreklu piemēri ar interesantām ilustrācijām, bet autore domā, ka ir nepieciešams vairāk t-kreklu, kuros tiktu pielietotas zīmētas burtu kompozīcijas. Bakalaura darba mērķis ir izpētīt burtveidolus un izveidot zīmētas burtu kompozīcijas…
Smaller calcite lattice deformation caused by occluded organic material in coccoliths than in mollusk shell.
2015
7 pages; International audience; The growth and nucleation of biominerals are directed and affected by associated biological molecules. In this paper, we investigate the influence of occluded biomolecules on biogenic calcite from the coccolithophorid Pleurochrysis carterae and from chalk, a rock composed predominantly of fossil coccoliths. We compare the results with data on chalk from the extensively studied mussel Pinna nobilis that served as a control. Using high resolution synchrotron powder X-ray diffraction combined with in situ heating, the influence of organic compounds on the structure of the inorganic phase was probed. Two heating cycles allow us to differentiate the effects of th…
Crystallized nano-sized alpha-tricalcium phosphate from amorphous calcium phosphate: microstructure, cementation and cell response
2015
New insight on the conversion of amorphous calcium phosphate (ACP) to nano-sized alpha tricalcium phosphate (α-TCP) provides a faster pathway to calcium phosphate bone cements. In this work, synthesized ACP powders were treated with either water or ethanol, dried, crystallized between 700 and 800 °C, and then cooled at different cooling rates. Particle size was measured in a scanning electron microscope, but crystallite size calculated by Rietveld analysis. Phase composition and bonding in the crystallized powder was assessed by x-ray diffraction and Fourier-transform infrared spectroscopy. Results showed that 50 nm sized α-TCP formed after crystallization of lyophilized powders. Water trea…
Does phosphorus affect the industrial Portland cement reactivity?
2018
Abstract The effect of phosphorous on the mineralogy and reactivity of Portland cement has been investigated through an industrial clinkers series. The samples were collected from the same Tunisian cement plant and classified according to the content of P2O5 from 0.5% to 1.1%. All samples were manufactured at the same thermal and cooling conditions as well as possible. The specimens were characterized by X-ray fluorescence spectrometry and optical microscopy techniques and their mineralogy was determined by X-ray powder diffraction coupled to the Rietveld analysis. The cements reactivity prepared from the clinkers was followed by means of isothermalcalorimetry. The compressive strength of t…
Rietveld Refinement of Tetragonal V4+–ZrO2 Solid Solutions Obtained from Gels by X-ray Powder Diffraction
2002
Abstract The crystal structure of three tetragonal V x Zr 1− x O 2 solid solutions, with x =0.025, 0.05, and 0.075, prepared by heating dried gel precursors at 450°C in air atmosphere, have been determined by Rietveld refinement on the basis of powder X-ray powder diffractometer data. They contain V 4+ cations surrounded by eight oxygens, four at a distance between 2.079 and 2.093 A and another four at longer distances between 2.369 and 2.348 A. The estimation of the crystal average oxygen position from the X-ray lattice parameter of V x Zr 1− x O 2 conform with the relationship proposed by Howard et al. ( J. Am. Ceram. Soc. 81, 241 (1998)).
Structural and conductivity studies in LiFeP 2 O 7 , LiScP 2 O 7 , and NaScP 2 O 7
2000
Structural studies of LiScP2O7 by Rietveld refinement confirm that this material is isostructural with LiFeP2O7 studied previously. However, NaScP2O7 shows a structure different from the structural types of the basic group of NaIMIIIP2O7 known thus far. Systematic ranges for the six structural types of AIMIIIP2O7 are presented in terms of ion radii sums and ratios. The framework of LiMP2O7 (M=Sc, Fe) has rather wide tunnels running along the crystallographic c-axis. This feature has determined our interest to check the ion conductivity in AIMIIIP2O7 (A=Li, Na; M=Sc, Fe). The bulk conductivity, however, is low in these compounds, 10−6–10−7 S/cm at 300 °C, as determined by impedance spectrosc…