Search results for "lomu"
showing 10 items of 198 documents
Sociālais darbs ar alkohola lietotājiem un atkarīgajiem pašvaldības ilgstošās sociālās aprūpes institūcijās Rīgā
2018
Maģistra darba mērķis ir noskaidrot iespējamos alkolola lietošanas un atkarību problēmas mazināšanas risinājumus un institūciju darbības pilnveides iespējas, veicinot sociālā darba praksi RSAC (Rīgas sociālās aprūpes centrs) ar pilngadīgām personām. Sociālais darbs ar alkohola lietotājiem un atkarīgajiem analizēts izmantojot sociālo lomu teoriju un kognitīvi biheiviorālo teoriju. Darba gaitā autore veic RSAC klientu anketēšanu, 7 daļēji strukturētas intervijas ar RSAC sociālajiem darbiniekiem, 3 daļēji strukturētas intervijas ar RSAC sociālā darba nodaļu vadītājiem un 1 daļēji strukturētu interviju ar sociālā darba SAC ekspertu. RSAC sociālajiem darbiniekiem pastāv grūtības strādāt ar alkoh…
Vecākā pirmsskolas vecuma bērna dialogrunas veidošanās lomu rotaļā
2017
Bakalaura darba tēma – Vecākā pirmsskolas vecuma bērna dialogrunas veidošanās lomu rotaļā. Pētījuma mērķis – pētīt lomu rotaļu izmantošanas iespējas vecākā pirmsskolas vecuma dialogrunas sekmēšanai. Darbs sastāv no divām daļām – teorētiskās un empīriskās daļas. Teorētiskajā daļā ir sniegts vecākā pirmsskolas vecuma bērnu runas un valodas raksturojums pedagogu un psihologu atziņās, analizēta dialogruna kā viens no svarīgākajiem uzdevumiem vecākajā pirmsskolas vecumā, atspoguļota lomu rotaļu nozīme dialogrunas attīstībā. Empīriskajā daļā ir sniegts pētījuma metodoloģiskais pamatojums, izstrādāti dialogrunas prasmju vērtēšanas kritēriji, noskaidrots pētāmās grupas bērnu dialogrunas prasmes līm…
Sarunas naratīvs: stāstījumi lomu spēlē “Cietumi un pūķi”
2019
Stāstiem vienmēr ir bijusi nozīmīga loma mūsu dzīvē. Stāstījumi gadu gaitā ir attīstījušies - no mutvārdu stāstiem, literatūras, lugām līdz pat filmām, un mūsdienās spēlēm. Cietumi un Pūķi ir galda un loma spēle, kurā spēlētājiem ir iespēja kopīgi radīt aizraujošu stāstu. Šī pētījuma mērķis ir apskatīt sarunas, kas notiek spēles Cietumi un Pūķi gaitā, īpatnības, lai izprastu, kā spēlētāji nonāk kopīgā prāta stāvoklī un orientējas radītajā mutvārdu stāstījumā. Šī pētījumā gaitā tika analizēts Cietumi un Pūķi tiešsaistes straumējums Kritiskā Loma, iegūstot transkriptu un aplūkojot piemērus, lai novērotu, kādus lingvistiskās kategorijas spēlētāji izmanto, lai izveidotu un noturētos kopīgajā pr…
Growth response of the saltbush Atriplex nummularia L. to inoculation with the arbuscular mycorrhizal fungus Glomus intraradices
2005
Abstract Plantlets of Atriplex nummularia were inoculated with the arbuscular mycorrhizal fungi Glomus intraradices in a pot experiment. Plants were grown in a low P soil. Highly significant growth response of a Chenopodiaceae was recorded for the first time. Mycorrhizal colonization of roots was well developed, internal hyphae and vesicles were observed, but not arbuscules. These observations suggest that arbuscules are not necessary to obtain significant growth stimulation from mycorrhizal inoculation. Atriplex nummularia is already used as forage crops, its high mycorrhizal dependency offers possibilities to develop this production and revegetation strategies.
Medicago truncatula
2012
In plants, long distance transport of sugars from photosynthetic source leaves to sink organs comprises different crucial steps depending on the species and organ types. Sucrose, the main carbohydrate for long distance transport is synthesized in the mesophyll and then loaded into the phloem. After long distance transport through the phloem vessels, sucrose is finally unloaded towards sink organs. Alternatively, sugar can also be transferred to non‐plant sinks and plant colonization by heterotrophic organisms increases the sink strength and creates an additional sugar demand for the host plant. These sugar fluxes are coordinated by transport systems. Main sugar transporters in plants compri…
Medicago species affect the community composition of arbuscular mycorrhizal fungi associated with roots
2007
National audience; The symbiosis between plants and arbuscular mycorrhizal fungi (AMF) is ancient and involves 80% of terrestrial plant families. The symbiotic association between AMF and plants was described to be non specific. However, AMF were reported to influence plant community diversity and productivity. On the other way, the effect of plant genotypes belonging to closely related species on AMF diversity has not been explored so far. The aim of this work was to assess the impact of four different Medicago species, M. laciniata, M. murex, M. polymorpha and M. truncatula cv. Jemalong J5, on the composition of AM fungal community, when cultivated in a silty-thin clay soil (Mas d’Imbert,…
Transcriptional response of Medicago truncatula sulphate transporters to arbuscular mycorrhizal symbiosis with and without sulphur stress
2013
Sulphur is an essential macronutrient for plant growth, development and response to various abiotic and biotic stresses due to its key role in the biosynthesis of many S-containing compounds. Sulphate represents a very small portion of soil S pull and it is the only form that plant roots can uptake and mobilize through H(+)-dependent co-transport processes implying sulphate transporters. Unlike the other organically bound forms of S, sulphate is normally leached from soils due to its solubility in water, thus reducing its availability to plants. Although our knowledge of plant sulphate transporters has been growing significantly in the past decades, little is still known about the effect of…
Effect of incorporation of Brassica napus L. residues in soils on mycorrhizal fungus colonisation of roots and phosphorus uptake by maize (Zea mays L…
2007
International audience; Plants in the Brassicaceae family are known to contain thioglucoside compounds that produce isothiocyanates when tissues are disrupted. These chemicals have a negative effect on soil-borne fungal pathogens, and possibly on vesicular-arbuscular mycorrhizal (AM) fungi. We investigated the effect of incorporation of Brassica napus L. residues in a soil on mycorrhizal colonisation of roots, P uptake and growth of following maize (Zea mays L.) crop. A pot experiment was carried out in a glasshouse with pre-inoculation with Glomus intraradices (+I and -I), incorporation of B. napus L. residues (+R and -R) and mineral P fertilization (+P and -P) as studied factors. The soil…
Characterization of Pea (Pisum Sativum L.) genes implicated in arbuscular mycorrhiza formation and function
2010
The arbuscular mycorrhizal (AM) association results from a successful interaction between the genomes of the two symbiotic partners. In this context, the aim of my research was to better characterize the role of the late stage symbiosis-related pea genes PsSym36, PsSym33 and PsSym40 in the functional AM (i) by investigating the effect of mutations in the three genes on fungal and plant gene responses and (ii) by creating conditions for the localization of two of the genes, PsSym36 and PsSym40, on the pea genetic map for future map-based cloning. The expression of a subset of ten fungal and eight plant genes,previously reported to be activated during mycorrhiza development, was compared in G…
Effect of cadmium on growth, isoflavonoid and protein accumulation patterns in mycorrhizal roots of Medicago truncatula
2007
International audience; Ecosystems are submitted to various abiotic stresses, among which heavy metals represent major industrial pollutants. Cadmium (Cd), that has damaging effects on plant metabolism, occurs in agricultural environments through industrial pollution and human activities, including phosphate fertiliser and sewage sludge applications. Metal availability to plants can be modulated by soil microorganisms, including arbuscular mycorrhizal (AM) fungi. In the present work, Cd effects on the model legume Medicago truncatula inoculated or not with the AM fungus Glomus intraradices have been studied at 3 levels: (1) plant biomass production together with green part chlorophyll quant…