Search results for "bee"
showing 10 items of 628 documents
Mārketinga komunikāciju pilnveidošanas iespējas uzņēmumā “CityBee”.
2020
Bakalaura tēma ir “Mārketinga komunikāciju pilnveidošanas iespējas uzņēmumā “CityBee””. Bakalaura darba mērķis ir, pamatojies uz mārketinga komunikāciju teorētiskiem aspektiem un aptaujā iegūtiem rezultātiem, izpētīt mārketinga komunikāciju izmantošanu uzņēmumā “CityBee”, atklāt nepilnības un sniegt priekšlikumus to novēršanai. Bakalaura darbs sastāv no trīs pamatdaļām un vairākām apakšnodaļām, anotācijas, ievada, secinājumu, priekšlikumu, literatūras saraksta un pielikumu daļas, kas atspoguļots saturā. Pirmajā nodaļā autore raksturo informāciju par mārketinga komunikācijām, tā būtību, veidiem un tā lomu uzņēmumā, lai uzzinātu visus esošos mārketinga komunikāciju veidus. Otrajā nodaļā autor…
El laberinto de la sucesión de estados respecto de los tratados internacionales sobre derechos humanos
2021
This Article analyses the effects of succession of States in respect of international treaties on human rights. This is a matter not codified by the Vienna Convention on Succession of States in respect of Treaties. We have to bear in mind that human rights treaties have been adopted by international organisations, which have developed their own practice both for the succession of States as States Members of an international organisation and for the succession of States as Contracting Parties to treaties that the United Nations, the Council of Europe or the European Union have adopted in the field of human rights.
Nest-site competition between bumblebees (Bombidae), social wasps (Vespidae) and cavity-nesting birds in Britain and the Western Palearctic
2015
Capsule: There is no evidence of widespread significant nest-site competition in Britain or the Western Palearctic between cavity-nesting birds and bumblebees or social wasps. Aims: To investigate competition between cavity-nesting birds and bumblebees and wasps, particularly the range-expanding Tree Bumblebee, Saxon Wasp and European Hornet in Britain, and review evidence throughout the Western Palearctic. Methods: We compared field data from English and Polish studies of tits and woodpeckers breeding in nest-boxes and/or tree holes to assess nest-site competition with bumblebees and wasps. We reviewed the literature quantifying nest-site competition between birds and these insects in the …
Paenibacillus larvae Chitin-Degrading Protein PlCBP49 Is a Key Virulence Factor in American Foulbrood of Honey Bees
2014
Paenibacillus larvae, the etiological agent of the globally occurring epizootic American Foulbrood (AFB) of honey bees, causes intestinal infections in honey bee larvae which develop into systemic infections inevitably leading to larval death. Massive brood mortality might eventually lead to collapse of the entire colony. Molecular mechanisms of host-microbe interactions in this system and of differences in virulence between P. larvae genotypes are poorly understood. Recently, it was demonstrated that the degradation of the peritrophic matrix lining the midgut epithelium is a key step in pathogenesis of P. larvae infections. Here, we present the isolation and identification of PlCBP49, a mo…
Resistance to amitraz in the parasitic honey bee mite Varroa destructor is associated with mutations in the β−adrenergic-like octopamine receptor
2021
AbstractVarroa destructor is considered a major reason for high loss rate of Western honey bee (Apis mellifera) colonies. To prevent colony losses caused by V. destructor it is necessary to actively manage the mite population. Beekeepers, particularly commercial beekeepers, have few alternative treatments other than synthetic acaricides to control the parasite, resulting in intensive treatment regimens that led to the evolution of resistance in mite populations.To investigate the mechanism of the resistance to amitraz detected in V. destructor mites from French and U.S. apiaries, we identified and characterized octopamine and tyramine receptors (the known targets of amitraz) in this species…
Gada koka 2020 – Eiropas dižskābarža – herbārijs
2020
Latvijas Dendrologu biedrība (LDB) par 2020. gada koku izvēlējās Eiropas dižskābardi Fagus sylvatica L. Latvijas Universitātes Muzeja Botānikas un mikoloģijas kolekciju herbārijā glabājas arī šīs sugas pārstāvju herbārijs - žāvēti un presēti zariņi ar lapām. Rakstā ir Eiropas dižskābarža sugas apraksts un 5 attēli no LU Muzeja herbārija, ar informāciju par to ievākšanas vietām un laikiem.
Insect brains use image interpolation mechanisms to recognise rotated objects.
2008
Recognising complex three-dimensional objects presents significant challenges to visual systems when these objects are rotated in depth. The image processing requirements for reliable individual recognition under these circumstances are computationally intensive since local features and their spatial relationships may significantly change as an object is rotated in the horizontal plane. Visual experience is known to be important in primate brains learning to recognise rotated objects, but currently it is unknown how animals with comparatively simple brains deal with the problem of reliably recognising objects when seen from different viewpoints. We show that the miniature brain of honeybees…
alpha-Tocopherol, MDA-HNE and 8-OHdG levels in liver and heart mitochondria of adriamycin-treated rats fed with alcohol-free beer.
2008
Different studies indicate that oxidative stress and mitochondrial damage are key factors in different pathogenic process. The aim of this study was to investigate the possible protective role of alcohol-free beer on adriamycin-induced (ADR) heart and liver toxicity using biomarkers of oxidative stress. This effect was compared with the effect of alcohol beer intake and with a control group. Rats were randomly divided into six groups. The first group received no adriamycin, was fed with water and was regarded as the control group; the second group was injected with a ADR (two cycles of 5mg/kg); the third and fourth groups were fed with alcohol-free and beer for 21 days, respectively and the…
Obtaining and Characterisation of Starch-Based Edible Films Incorporating Honey, Propolis and Bee Bread
2019
Abstract This research investigates the physical-chemical, sensorial and mechanical characteristics of starch-based edible films incorporating three types of bee hive products: honey, propolis and bee bread, in concentrations varying from 1% to 3%, reported to starch. The results indicates an increasing of films moisture, water activity, ash content and acidity, in the order: honey<propolis<bee bread, all values increasing with the increasing of hive products percentage into the control film; aw is remaining at very low values, under 0.4. Sensorial analysis indicated honey as the better suited for improving taste and flavour and bee bread for increasing colour intensity of the films; …
Comparing two methods to perform a beerkan infiltration run in a loam soil at different dates
2023
&lt;p&gt;Performing beerkan infiltration runs with different heights of water pouring could help to obtain saturated soil sorptivity, &lt;em&gt;S&lt;/em&gt;, and hydraulic conductivity, &lt;em&gt;K&lt;sub&gt;s&lt;/sub&gt;&lt;/em&gt;, data usable to explain and simulate hydrological processes. However, most of the available information on the L (low height of water pouring, nearly 3 cm) - H (high height, 1-2 m) methodology refers to runs making use of a relatively limited number of water volumes and there is some sign that a few water volumes could yield an incomplete description of soil alteration phenomena induced by wetting. For a lo…