Search results for "Zen"
showing 10 items of 3479 documents
CCDC 291816: Experimental Crystal Structure Determination
2006
Related Article: F.A.Cotton, C.A.Murillo, S.-E.Stiriba, Xiaoping Wang, Rongmin Yu|2005|Inorg.Chem.|44|8223|doi:10.1021/ic051282c
No biomasas iegūta levoglikozenona un tā degradācijas produktu noteikšana ātrās pirolīzes produktos, izmantojot UHPLC-UV-QDa sistēmu
2019
Literatūras apskatā apkopota informācija par levoglikozenona potenciālajām izmantošanas iespējām, tā izdalīšanas un noteikšanas metodēm, kā arī tā stabilitāti un iespējamajiem degradācijas produktiem. Apkopota informācija par savienojumu stabilitātes noteikšanas metodiku. Izmantojot UHPLC-UV sistēmu, izstrādāta metode levoglikozenona un tā degradācijas produktu identifikācijai, kā arī veikta metodes analītisko parametru noteikšana. Pēc izstrādātās UHPLC-UV metodes veikti levoglikozenona standartvielas un ātrās pirolīzes produktu – kondensātu un to ekstrakcijas frakciju – stabilitātes pētījumi dažādās šķīdinātāju sistēmās, divās temperatūrās un mainot šķīduma vides pH. Izmantojot UHPLC-MS si…
Free radical scavenging abilities of flavonoids as mechanism of protection against mutagenicity induced by tert-butyl hydroperoxide or cumene hydrope…
2003
Mutagenicity induced by tert-butyl hydroperoxide (BHP) or cumene hydroperoxide (CHP) in Salmonella typhimurium TA102 was effectively reduced by flavonols with 3',4'-hydroxyl groups such as fisetin, quercetin, rutin, isoquercitrin, hyperoxide, myricetin, myricitrin, robinetin, and to a lesser extent also by morin and kaempferol (ID50=0.25-1.05 micromol per plate). With the exception of isorhamnetin, rhamnetin, morin, and kaempferol, closely similar results were obtained with both peroxides. Hydrogenation of the double bond between carbons 2 and 3 (dihydroquercetin, dihydrorobinetin) as well as the additional elimination of the carbonyl function at carbon 4 (catechins) resulted in a loss of a…
Il progetto del quartiere Zen 2
2019
Il contributo riporta una conversazione avuta con Salvatore Bisogni a Napoli sul progetto per il quartiere Zen 2 del 1969. L’intervista fu realizzata in occasione degli studi compiuti per la ricerca di Dottorato che ha riguardato l’area periferica nord di Palermo, di cui il quartiere Zen costituisce il nucleo fondamentale. La qualità del progetto presentato e l’apprezzamento avuto negli anni Settanta da parte della cultura architettonica ne segnalano la rilevanza, a cui è seguita una fase di messa in discussione: la forma dell’insediamento, ultima emanazione dei dettami del Movimento Moderno, insieme alla lenta, parziale e incompleta realizzazione ne hanno determinato le sorti. Il dialogo…
Scale-dependent patterns and drivers of vascular plant, bryophyte and lichen diversity in dry grasslands of the Swiss inneralpine valleys
2022
AbstractThe inner-alpine dry valleys of the Swiss Alps are characterized by subcontinental climate, leading to many peculiarities in dry grassland species composition. Despite their well-known uniqueness, comprehensive studies on biodiversity patterns of the dry grasslands in these valleys were still missing. To close this gap, we sampled 161 10-m2 vegetation plots in the Rhône, Rhine and Inn valleys, recording vascular plants, terricolous bryophyte and lichen species, as well as environmental data. Additionally, we tested the scale-dependence of environmental drivers using 34 nested-plot series with seven grain sizes (0.0001–100 m2). We analysed the effects of environmental drivers related…
X-ray and DFT-calculated structures of a vanadyl Schiff base complex: (methanol-κO)[2-methoxy-6-({2-[(2-oxido-3-methoxybenzylidene)amino]benzyl}imino…
2012
The central VVatom in the title mononuclear oxovanadium complex, [VO(C23H20N2O4)(CH3OH)]·H2O, has a distorted octahedral coordination. Two N atoms and two O atoms of the Schiff base define the base of the bipyramid and two O atoms are in the apical positions, one from vanadyl and the second from methanol. Density functional theory (DFT) calculations were performed for the title complex and its ligand to compare their geometry in the solid and gas phases. Additional analyses were made of the changes in the geometry of the ligand during complex formation. The HOMA (harmonic oscillator model of aromaticity) descriptor of π-electron delocalization was calculated to estimate the aromaticity of t…
A vanadyl Schiff base complex: {2,2'-[1,1'-(o-phenylenedinitrilo)bis(ethan-1-yl-1-ylidene)]diphenolato}oxovanadium(IV).
2011
The green crystals of the title compound, [V(C(22)H(18)N(2)O(2))O], represent a mononuclear oxovanadium complex. The central V(IV) centre has a distorted square-pyramidal coordination. Two N atoms and two O atoms of the Schiff base ligand define the base of the pyramid, and the oxide O atom is in the apical position. Density functional theory (DFT) calculations were performed to analyse the changes in the geometry of the ligand during the complex formation. The most significant changes are observed in the values of the torsion angles in the vicinity of the donor N atoms. The HOMA index (Harmonic Oscillator Model of Aromaticity) has been calculated to compare the aromaticity of the benzene r…
The BioS4YOU project: how Science Education can enhance student capacity to be participatory citizens in a transforming world
Recent studies evidence the need to engage students at all levels in Science to boost the supply of a skilled scientific workforce and knowledgeable citizenry. The “Bio-Inspired STEM topics for engaging young generations” (BioS4YOU) project, funded by the European Union within the Erasmus+ KA2 Innovation program, aims to bridge the gap between the STEM national curricula (which mostly include basic contents of Science, Technology, Engineering, and Mathematics) and the needs of Z-generation students, apathetic/uninterested to basic themes, but enthusiastic in issues related to environmental, social, and health concerns. The main goal of the BioS4You project is to engage European young learne…
Fading mitigation coding techniques for space to ground free space optical communications
2014
In this manuscript, a Geostationary satellite-toground Free Space Optics (FSO) downlink channel model has been implemented, which is able to predict temporal irradiance fluctuations caused by scintillation at a wide range of turbulence conditions and for different values of the zenith angle. In order to mitigate fading events that occur in FSO communications, we have also tested the performance of three different families of Rateless Codes (Luby Transform, Raptor and RaptorQ) into our model and found that RaptorQ is the best candidate to mitigate errors in FSO links. Keywords— Optical Wireless Communications; Space-toGround FSO links, time-series, rateless codes; fading mitigation
Bertholda Müllera-Oerlinghausena nieznane dzieła o tematyce religijnej
2020
Bogata twórczość artysty Bertholda Müllera-Oerlinghausena (ur. 10.02.1893 r., zm. 22.06.1979 r.) zawiera liczne odniesienia do chrześcijaństwa. Projekty kilkunastu okien witrażowych, realizacje mozaikowe, reliefy, a nade wszystko rzeźby odnoszą się do chrześcijańskiej Tradycji skłaniając do refleksji wielu odbiorców. Na terenie Polski znajdują się jego dzieła: monumentalny krucyfiks w kościele pw. św. Antoniego w Pile oraz osiem witraży w kościele pw. św. Marii Magdaleny w Dobrodzieniu przedstawiające wybrane wydarzenia z życia Jezusa.