Search results for "AIRO"
showing 10 items of 84 documents
Zvaigžņotā Debess: 2008/09, Ziema
2008
Latvijas Zinātņu akadēmija, Latvijas Universitāte
Beyond The Wall, Notes An Multicultural Mediterranean Landscape
2009
Il libro contiene degli articoli sulla multiculturalità nelle città del Mediterraneo. Il Mare Nostrum dei romani è stato il più straordinario teatro d’incontri delle civiltà. Il libro di Fernand Brodel “La Mediterranée e le monde mediterranéen a l’epoque de Philippe II” è uno straordinario affresco che, puntando alla totalità del lago chiuso, rappresenta l’unità organica di un mondo idilliaco di relazioni tranquille. Il quadro è più realistico sembrerebbe quello di una convivenza in uno stato di latente conflitto, che esplode ancora nel XXI secolo – come il conflitto dei Balcani che ha portato alla disintegrazione della Jugoslavia. Gli articoli (13) descrivono numerosi casi di studio messi …
Coincidenze compositive tra la IV Ode Romana di Orazio e la I Pitica di Pindaro
2000
Language practices in primary schools [in Nairobi] : the teachers' perspectives
2010
ABSTRACT Otieno, Suzanne Adhiambo. LANGUAGE PRACTICES IN PRIMARY SCHOOLS IN NAIROBI: THE TEACHERS’ PERSPECTIVES. A Pro Gradu Thesis in Special Education, University of Jyväskylä, Department of Educational Sciences, 2010. 84 pages. Unpublished Literacy is facilitated by the readiness to comprehend fluently written language and this requires accurate and fluent basic reading skills, good mastery of the language to be read and a lot of practice in reading the particular language. Basic reading skills involve the ability to pronounce written words accurately and this requires appropriate teaching instructions in a language most familiar to the pupils. Research has found that learning to read in…
Effect of host kairomones and oviposition experience on the arrestment behavior of an egg parasitoid
2006
SUMMARY Chemical residues left by walking adults of the southern green stink bug, Nezara viridula (L.) (Heteroptera: Pentatomidae) induce arrestment behavior in the egg parasitoid Trissolcus basalis (Wollaston)(Hymenoptera: Scelionidae) leading to prolonged periods of walking on contaminated areas and to systematic return to the stimulus after encountering the treatment borders. In this study, we quantified how the hierarchical value of residues from host adults and oviposition experience can influence the arrestment behavior of T. basalis females. Our results showed that:(1) female wasps perceived host residues at different hierarchical levels depending on the host gender, with a clear pre…
Host sex discrimination by an egg parasitoid on Brassica leaves.
2011
Egg parasitoids are able to find their hosts by exploiting their chemical footprints as host location cues. In nature, the apolar epicuticular wax layer of plants that consists of several classes of hydrocarbons serves as the substrate that retains these contact kairomones. However, experiments on chemical footprints generally have used filter paper as substrate to study insect behavior. Here, we explored the ability of Trissolcus basalis (Scelionidae) females to discriminate between footprint cues left by male and female Nezara viridula (Pentatomidae) on leaves of their host plant Brassica oleracea (broccoli). Furthermore, we analyzed the chemical composition of the outermost wax layer of …
The Egg Parasitoid Trissolcus basalis uses n-nonadecane, a Cuticular Hydrocarbon from its Stink Bug Host Nezara viridula, to Discriminate Between Fem…
2007
Contact kairomones from adult southern green stink bugs, Nezara viridula (L.) (Heteroptera: Pentatomidae) that elicit foraging behavior of the egg parasitoid Trissolcus basalis (Wollaston) were investigated in laboratory experiments. Chemical residues from tarsi and scutella of N. viridula induced foraging by gravid female T. basalis. Residues from body parts of female N. viridula elicited stronger responses than those from the corresponding body parts of males. Deproteinized tarsi still elicited searching responses from wasps, indicating that the kairomone was not proteinaceous. Hexane extracts of host cuticular lipids induced searching responses from T. basalis, with a strong preference f…
Retās un apdraudētas augu sugas jūrmalas zilpodzes (Eringium maritimum L.) pavairošana in vitro un audu fenolu saturs atkarībā no barotnes sastāva
2016
Jūrmalas zilpodze (Eryngium maritimum L.) ir Latvijā reta un apdraudēta suga, kura ir ierakstīta Latvijas Sarkanās grāmatas 1. kategorijā. Latvijā jūrmalas zilpodzes izplatību ierobežo piemērotu biotopu trūkums un sēklu mazā dīgtspēja. Zilpodzei ir liela nozīme Eiropas tradicionālajā medicīnā, jo tā satur dažādus bioaktīvus savienojumus ar daudzveidīgu farmakoloģisko aktivitāti. Darba mērķis bija uzsākt jūrmalas zilpodzes augu audu kultūru un izmēģināt šīs sugas mikropavairošanas metodes, kā arī noteikt kopējā fenolu satura izmaiņas atkarībā no barotnes sastāva. Lai iesāktu kultūru, kā sākotnējo eksplantu izmantoja sēklas, kuras diedzēja aseptiskos apstākļos. Jūrmalas zilpodzes mikropavairo…
Behavioral and Chemical Investigations of Contact Kairomones Released by the Mud Dauber Wasp Trypoxylon politum, a Host of the Parasitoid Melittobia …
2011
Contact kairomones from the host mud dauber wasp Trypoxylon politum Say (Hymenoptera: Crabronidae) that mediate behavioral responses of its ectoparasitoid Melittobia digitata Dahms (Hymenoptera: Eulophidae) were investigated. Chemical residues from host by-products, the cocoon, and the meconium, induced arrestment behavior of macropterous female parasitoids, while those from the host stage attacked, i.e., the prepupa, did not. Melittobia digitata response to polar and apolar extracts of host by-products indicated kairomone(s) solubility mainly in hexane. GC and GC/MS analysis of cocoon and meconium apolar extracts revealed a mixture of linear carboxylic acids from C(6) to C(18), and both ex…
The usage of social media among young adults living in Nairobi, Kenya : only entertainment or contributions to societal change?
2015
Social media usage has been found to have increased all over the world, also in the so-called developing countries. Although the percentages are still rather low, it can be argued that the use of social media is becoming increasingly important also in African countries. Kenya has been found to be one of the leading countries regarding social media usage in East Africa. Although research on social media has been conducted, for instance, on the use of social media in protest movements and in the areas of users’ motivation, less emphasis has been placed on their developmental aspects. Thus, to gain a deeper understanding of the usage of social media in the so-called developing countries, this …