Search results for "zobi"
showing 10 items of 103 documents
Importance de la variabilité génétique bactérienne sur le fonctionnement de la symbiose Rhizobium leguminosarum biovar viciae avec le pois (Pisum sat…
2008
Les irrégularités de rendement et de teneur en protéine des graines que présente la culture du pois sont, en partie, liées à des problèmes de nutrition azotée. En tant que légumineuse, la nutrition azotée du pois repose à la fois sur la fixation symbiotique de l’azote atmosphérique et sur l’absorption racinaire des nitrates du sol. Notre principal objectif a été de déterminer si le partenaire bactérien, Rhizobium leguminosarum biovar viciae (Rlv), peut être un facteur limitant de la nutrition azotée et du rendement du pois. La variabilité génétique des Rlv et les facteurs influençant la structure des populations de Rlv à l'état libre et symbiotiques ont été étudiés. La signification de la d…
SIMBIONTI RADICALI DI ASTRAGALUS NEBRODENSIS (GUSS.) STROBL.
2013
Le leguminose spontanee mediterranee hanno un elevato potenziale nei processi di rinaturalizzazione di ecosistemi degradati o semiaridi poiché stabiliscono simbiosi radicali con batteri azoto-fissatori e funghi micorrizici i quali, agendo sinergicamente, avvantaggiano la pianta per la nutrizione e la resistenza agli stress. Astragalus nebrodensis è un arbusto perenne appartenente alla famiglia delle Fabaceae, endemico in Sicilia; i simbionti radicali di questa specie non sono noti. Gli obiettivi di questo studio sono stati: 1) l’analisi della diversità dei rizobi simbionti di Astragalus nebrodensis; 2) la valutazione dell’effetto dell’inoculo di rizobi da collezione e di funghi micorrizici …
CCDC 826329: Experimental Crystal Structure Determination
2012
Related Article: M.Deniz, J.Pasan, J.Ferrando-Soria, O.Fabelo, L.Canadillas-Delgado, C.Yuste, M.Julve, J.Cano, C.Ruiz-Perez|2011|Inorg.Chem.|50|10765|doi:10.1021/ic201314k
CCDC 1551855: Experimental Crystal Structure Determination
2017
Related Article: Isabella Pyka, Joachim Nikl, Dieter Schollmeyer and Siegfried R. Waldvogel|2017|Eur.J.Org.Chem.|2017|3501|doi:10.1002/ejoc.201700758
Straightforward preparation of highly loaded MWCNT-polyamine hybrids and their application in catalysis
2020
Multiwalled carbon nanotubes (MWCNTs) were easily and efficiently functionalised with highly cross-linked polyamines. The radical polymerisation of two bis-vinylimidazolium salts in the presence of pristine MWCNTs and azobisisobutyronitrile (AIBN) as a radical initiator led to the formation of materials with a high functionalisation degree. The subsequent treatment with sodium borohydride gave rise to the reduction of imidazolium moieties with the concomitant formation of secondary and tertiary amino groups. The obtained materials were characterised by thermogravimetric analysis (TGA), elemental analysis, solid state 13C-NMR, Fourier-transform infrared spectroscopy (FT-IR), transmission ele…
Imagen del prelado don Juan de Ribera. Estudio iconográfico
2015
Don Juan de Ribera es, sin lugar a dudas, una de las figuras más relevantes de la historia de Valencia desde el punto de vista religioso, político, social y cultural. Nació en Sevilla en 1532. Su padre, don Pedro Afán Enríquez de Ribera, pertenecía a uno de los linajes más prestigiosos de la península, estrechamente vinculado a la Corona. Con tan sólo diez años fue enviado a estudiar a la Universidad de Salamanca, en un periodo que coincidía con la puesta en marcha del Concilio de Trento y allí se dieron cita maestros de gran talla intelectual y espiritual que influyeron decisivamente sobre el joven. Gracias al amparo del monarca Felipe II, del Sumo Pontífice Pío V y de su padre realizó una…
Comparison on photo-initiators for the preparation of methacrylate monolithic columns for capillary electrochromatography.
2010
The synthesis of lauryl methacrylate monoliths for capillary electrochromatography by UV polymerization using several free-radical initiators (alpha,alpha'-azobisisobutyronitrile, 2,2-dimethoxy-2-phenylacetophenone, dibenzoyl peroxide (BPO) and lauroyl peroxide (LPO)) has been investigated. Using a 1,4-butanediol/1-propanol mixture as porogenic solvent, the influence of each initiator and its content on the morphological and electrochromatographical properties of beds was evaluated. Under their respective optimum content, satisfactory separations of a test mixture of PAHs with similar efficiencies (minimum plate heights of 8.0-12.7 microm obtained from Van Deemter plots) were achieved for t…
Migrantu identitātes Zeidijas Smitas romānā “Baltie zobi” un Džona Lenčestera romānā “Kapitāls”
2016
Bakalaura darba mērķis ir izpētīt migrantu identitātēs divos 21.gs. britu romānos, proti Zeidijas Smitas romānā „Baltie Zobi” un Džona Lančestera romānā “Kapitāls”. Teorijas apskats par personisko un kopējo identitātes rašanos bija būtisks turpmākajai literatūras analīzei. No abu grāmatu analīzes, var secināt, ka nepastāv viens identitātes rašanās avots, kas būtu kopīgs visiem migrantiem. Papildus tam, var minēt, ka romānu gaitā, dažu grāmatas tēlu personiskās identitātes krasi mainījās. Lielākoties, Britu sabiedrība uztvera visus grāmatās atrodamus migrantus kā eksotisko „citu”. Daži no šiem tēliem, šo apzīmējumu rezultātā, cieta rases un kultūras aizspriedumu dēļ.
Seasonal fluctuations and long-term persistence of pathogenic populations of Agrobacterium spp. in soils.
2002
ABSTRACT Short- and long-term persistence of pathogenic (i.e., tumor forming) agrobacteria in soil was investigated in six nursery plots with a history of high crown gall incidence. No pathogenic Agrobacterium strains were isolated in soil samples taken in fall and winter in any plots, but such strains were isolated from both bulk soils and weed rhizospheres (over 0.5 × 10 5 pathogenic CFU/g of bulk soil or rhizosphere) in three out of six plots in spring and summer. PCR amplifications of a vir sequence from DNA extracted from soil confirmed the presence of Ti plasmids in summer and their absence in fall and winter. The results indicate that strains that harbor a Ti plasmid had an unforesee…
Legume inoculants to reduce soil emissions of nitrous oxide
2012
Nitrous oxide (N2O) is a potent greenhouse gas involved in depletion of the ozone layer and mainly arising from the soil and from agricultural activities. Within this framework, INRA teams inoculated soybean plants with natural strains of Rhizobia bacteria. Convincing results regarding the consumption of N2O greenhouse gases were obtained.