Search results for "Inde"
showing 10 items of 7365 documents
Współczesna wojna - model klasyfikacyjny surowców krytycznych
2016
The paper adresses the problem of the list of critical raw materials for the European Union. The theoretical model of classification of the critical raw materials was presented. The presented model is based on two variables: index of the compatibility (substitutability index) and recycling index.
Geostatistics for Mapping Leaf Area Index over a Cropland Landscape: Efficiency Sampling Assessment
2010
This paper evaluates the performance of spatial methods to estimate leaf area index (LAI) fields from ground-based measurements at high-spatial resolution over a cropland landscape. Three geostatistical model variants of the kriging technique, the ordinary kriging (OK), the collocated cokriging (CKC) and kriging with an external drift (KED) are used. The study focused on the influence of the spatial sampling protocol, auxiliary information, and spatial resolution in the estimates. The main advantage of these models lies in the possibility of considering the spatial dependence of the data and, in the case of the KED and CKC, the auxiliary information for each location used for prediction pur…
La nueva filantropía: hacia la era de la sociedad Mecenas. Análisis del crowdfunding social en España
2017
La primera crisis económica del siglo XXI, sufrida por el mundo Occidental, y por inclusión el Estado español, ha provocado cambios estructurales en las políticas aplicadas en gran parte de él, afectando en muchos casos al ámbito del Estado del bienestar. Así, las prioridades marcadas por los gobiernos españoles para salir de ella, han dejado al descubierto la fragilidad sobre la que se ha construido el Estado del bienestar en el Estado español, con una excesiva dependencia de las decisiones administrativas frente a las necesidades reales y la falta de un respaldo social suficiente a las entidades que desarrollan efectivamente una parte del mismo. El fuerte peso de la financiación pública d…
The head-to-head photodimer of indeno-indene.
2020
Irradiation of 1-(1-benzocyclobutenylidene)benzocyclobutene gives indenoindene and its head-to-head photodimer nonacyclo[9.7.7.72,10.01,11.02,10.03,8.012,17.019,24.026,31]dotriaconta-3,5,7,12,14,16,19,21,23,26,28,30-dodecaene, C32H24. The molecule is built from four essentially planar indane units attached to an elongated cyclobutane ring. In the crystal, C—H...π interactions connect molecules into layers parallel to the bc plane.
Crystal structures of (E)-3-(4-hydroxybenzylidene)chroman-4-one and (E)-3-(3-hydroxybenzylidene)-2-phenylchroman-4-one
2019
The synthesis and crystal structures of (E)-3-(4-hydroxybenzylidene)chroman-4-one, C16H12O3, I, and (E)-3-(3-hydroxybenzylidene)-2-phenylchroman-4-one, C22H16O3, II, are reported. These compounds are of interest with respect to biological activity. Both structures display intermolecular C—H...O and O—H...O hydrogen bonding, forming layers in the crystal lattice. The crystal structure of compound I is consolidated by π–π interactions. The lipophilicity (logP) was determined as it is one of the parameters qualifying compounds as potential drugs. The logP value for compound I is associated with a larger contribution of C...H interaction in the Hirshfeld surface.
Substituent effects in nitro derivatives of carbazoles investigated by comparison of low-temperature crystallographic studies with density functional…
2014
The crystal structure of 9H-carbazole, C12H9N, (I), has been redetermined at low temperature for use as a reference structure in a comparative study with the structures of 1-nitro-9H-carbazole, C12H8N2O2, (II), and 9-nitrocarbazole, C12H8N2O2, (III). The molecule of (I) has crystallographically imposed mirror symmetry (Z′ = 0.5). All three solid-state structures are slightly nonplanar, the dihedral angles between the planes of the arene and pyrrole rings ranging from 0.40 (7)° in (III) to 1.82 (18)° in (II). Nevertheless, a density functional theory (DFT) study predicts completely planar conformations for the isolated molecules. To estimate the influence of nitro-group substitution on aroma…
5,10-Dihydroindeno[2,1-a]indene
2019
The title compound, C16H12, crystallizes with four half molecules in the asymmetric unit, each of which is located on a crystallographic centre of inversion. The molecules are essentially planar. The crystal studied was a non-merohedral twin.
Unravelling the rationalities of childhood cycling promotion
2022
Decrease of children’s independent mobility (CIM) has worried academics, policymakers, educators and other professionals for decades. Research and policy often emphasise that promoting children’s physically active and independent transport modes as cycling is important to achieve better public health, solve environmental challenges and increase related economic benefits. Yet, cycling promotion is not a neutral process and all promotion efforts are derived from latent notions of ‘cyclists’ and ‘cycling’. This paper discusses different rationalities of childhood cycling promotion and the representations of ‘children’ as independent ‘cyclists’ they entail. We argue that in order to efficiently…
Attālums, skata leņķis un mirkšķināšanas biežums darbā ar viedtālruni
2020
Maģistra darbs ir uzrakstīts latviešu valodā uz 43 lapaspusēm, Tas satur 37 attēlus, 3 tabulas, 4 pielikumus un 49 atsauces uz literatūras avotiem. Mērķis: noskaidrot, kā tuvuma darba uzdevumi (lasīšana, spēles spēlēšana) ietekmē skatīšanās attālumu, skata leņķi un mirkšķināšanas biežumu, un novērtēt viedtālruņa lietošanas paradumus. Metode: pirmajā daļā 8 dalībnieki viedtālrunī veica lasīšanas un spēles uzdevumu, otrajā daļā 53 dalībnieki aizpildīja aptauju par viedtālruņa lietošanas paradumiem. Rezultāti: uzdevuma veids un ilgums līdz 20 min neietekmēja darba attālumu, skata leņķi un mirkšķināšanu darbā ar viedtālruni. Lielāks skata leņķis uz leju ir saistīts ar samazinātu mirkšķināšanas …
Measurement of the cosmic ray proton spectrum from 40 GeV to 100 TeV with the DAMPE satellite
2019
DAMPE satellite has directly measured the cosmic ray proton spectrum from 40 GeV to 100 TeV and revealed a new feature at about 13.6 TeV.