- About
-
The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 81 to 88 of 88 (0.027 seconds)Spelling suggestions: "subject:"tabac"" "subject:"table""
| 81 |
Etablierung und Anwendung der Chromatin-Immunopräzipitation für <i>in vivo</i>-Bindungsstudien der bZIP-Transkriptionsfaktoren TGA2.1 und TGA2.2 an Promotoren der Pathogenabwehr in Tabak / Establishment of the chromatin-immunoprecipitation for <i>in vivo</i>-binding studies of the bZIP transcription factors TGA2.1 and TGA2.2 at promotors of the pathogen defense response in tobaccoButterbrodt, Thomas Walter 03 November 2005 (has links)
No description available.
|
| 82 |
Die invloed van grondverdigting op die fosfaat opname deur tabak (Afrikaans)Dreyer, Jasper Gestaphus 28 April 2005 (has links)
In the tobacco production area of Nelspruit, a problem is experienced in increasing the phosphorus content of tobacco leaves to above0.25% despite of the high phosphorus content of the soil (higher than 30 mg/kg Bray 1). The aim of this study was to investigate the reasons for the low P content in tobacco leaves and how P and Ca content in the soil and soil compaction influence it. During the 1998/99 season, field tests were conducted at 3 different localities in the Nelspruit area to investigate the influence of soil compaction, phosphorus and calcium supply on P uptake. Treatment consisted of 2 calcium treatments, 2 soil treatment actions and 5 phosphorus levels. Leaf samples were taken for chemical analysis, 115 to 120 days after planting and the different treatments were harvested as they ripened physiologically and cured in a tobacco drying oven. This was used to calculate the yield, quality and income per hectare. A pot experiment were done under controlled conditions at the experimental farm of the University of Pretoria with soil from one of the field plots. With the pot experiment different bulk densities were simulated with 3 phosphorus and 2 calcium levels, to evaluate the effect thereof on P uptake. As the leaves ripened physiologically they were picked and dried for chemical analysis. On all the data an analysis of variance was performed. A final conclusion can be made that, high levels of P fertilization are unnecessary and attention must be paid to soil compaction, and that gypsum must be applied with care. Although not investigated in this study the low P content of leaves can be due to the genetic characteristics of the tobacco cultivars used in the Nelspruit area and the high levels of zinc in the soil which can cause P precipitation in roots that could restrict the P transport to the leaves. With the pot experiment it is proved that high P applications lead to a decline of the percentage zinc in the leaves. The conclusion is made in this study that when soil compaction were overcome, high and low dosages of phosphorus and the increase of calcium levels in the soil did not show a constant increase in P values above 0.25%. / Dissertation (MSc)--University of Pretoria, 2005. / Plant Production and Soil Science / unrestricted
|
| 83 |
Der bZIP-Transkriptionsfaktor BZI-1 aus Nicotiana tabacum: Analyse der in vivo Funktion durch Modulation der BZI-1- Aktivierungseigenschaften in transgenen Pflanzen / The bZIP-transcription factor BZI-1: Analysis of the in vivo function by modulation of the BZI-1 activation propertiesHeinekamp, Thorsten 25 April 2002 (has links)
No description available.
|
| 84 |
Funktionelle Analyse des Transkriptionsfaktors TGA2.1 aus Nicotiana tabacum: Identifikation von Interaktionspartnern und Charakterisierung transgener Pflanzen mit reduzierter TGA2.1-Menge / Functional analysis of the bZIP transcription factor TGA2.1 in Nicotiana tabacum: Identification of interacting partners and characterization of plants with reduced amounts of TGA2.1Krawczyk, Stefanie Ursula 05 November 2003 (has links)
No description available.
|
| 85 |
Risky Alcohol Use: The Impact on Health Service UseMiquel, Laia, Manthey, Jakob, Rehm, Jürgen, Vela, Emili, Bustins, Montserrat, Segura, Lidia, Vieta, Eduard, Colom, Joan, Anderson, Peter, Gual, Antoni 19 May 2020 (has links)
Objective: To examine health services use on the basis of alcohol consumption. Material and Methods: A cross-sectional study was carried out on patients visiting the Primary Health Care (PHC) settings in Catalonia during 2011 and 2012; these patients had a history of alcohol consumption. Information about outpatient visits in the PHC setting, hospitalizations, specialists’ visits and emergency room visits for the year 2013 was obtained from 2 databases (the Information System for the Development of Research in PHC and the Catalan Health Surveillance System). Risky drinkers were defined as those who consumed more than 280 g per week for men or more than 170 g per week for women, or any amount of alcohol while being involved in a high risk work activity, or taking medication that significantly interferes with alcohol or when being pregnant. Binge drinkers (>60 g in men or >50 g in women in a short amount of time more than once a month) were also considered risky drinkers. Results: A total of 606,948 patients reported consuming alcohol (of which 10.5% were risky drinkers). Risky drinkers were more likely to be admitted to hospitals or emergency departments (range of ORs 1.08–1.18) compared to light drinkers. Male risky drinkers used fewer PHC services than male light drinkers (OR 0.89, 95% CI 0.87–0.92). In general, risky alcohol users used services more and had longer hospital stays. When stratifying by socioeconomic level of the residential area, we found that risky drinking failed significance, while current or past cigarette smoking was associated with higher healthcare use. Conclusions: Risky drinkers use more expensive services, such as hospitals and emergency rooms, but not PHC services, which may suggest that prevention strategies and alcohol interventions should also be implemented in those settings.
|
| 86 |
Characterization of Expression of Puumala Virus Nucleocapsid Protein in Transgenic PlantsKhattak, Shahryar, Darai, Gholamreza, Süle, Sandor, Rösen-Wolff, Angela January 2002 (has links)
Transgenic plants expressing a foreign gene are a suitable system for the production of relevant immunogens in high amounts that can be used for the development of a new generation of vaccines against a variety of infectious diseases. In the present study, the expression of the nucleocapsid (N) protein of hantavirus serotype Puumala in tobacco and potato plants was investigated. Transgenic tobacco and potato plants were generated and established. These transgenic plants expressed the N protein of Puumala virus strain CG-1820. No major differences were observed when the phenotype and growth rates of transgenic plants were compared to those of normal plants. However, it was found that the leaves of transgenic tobacco plants were more slender and the tubers of transgenic potato plants were smaller than those in normal plants. In order to investigate the distribution of the expression of the foreign gene in transgenic plants, the proteins of leaves and roots of the individual transgenic tobacco and potato plants were examined by Western blot analyses. It was found that all transgenic tobacco and potato plants expressed the N protein in the leaves, whereas transgenic potato plants are able to significantly express the viral proteins also in the tubers and roots. The antigens were expressed at a level of 1 ng of protein/5 μg of dried leaves. The hantaviral recombinant N proteins obtained from transgenic tobacco and potato plants were able to elicit specific humoral and mucosal immune responses when administered intraperitoneally or orally to rabbits and mice. The expression of viral proteins in plants has two major advantages compared to other expression systems: firstly, there is no risk of contamination with mammalian viruses or other pathogens, and secondly, the production of high amounts of antigens is cheap and therefore of great economic interest. / Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
|
| 87 |
Charakterisierung der konservierten Domänen des Transkriptionsfaktors N.t.BZI-1 / Characterisation of the conserved domains of transcriptionfactor N.t.BZI-1Kuhlmann, Markus 25 April 2002 (has links)
No description available.
|
| 88 |
Lettern – Kacheln – Uhren – Pfeifen: Der Anbruch neuer Zeiten im Spiegel archäologischer QuellenHalle, Uta 29 May 2019 (has links)
Dieser Vortrag beschäftigte sich mit einer chronologischen Nahtstelle nicht nur der Archäologie,
mit dem Übergang zwischen Mittelalter und Neuzeit, im Spiegel archäologischer Quellen. Ausgangspunkt
ist die Frage, ob es an dieser Nahtstelle archäologisch fassbare Unterschiede im Quellenbestand gibt. Vorgestellt
werden die vier im Titel genannten Fundgruppen, die im zweiten Teil mit den kulturellen und historischen Zäsuren
und Transformationen dieses Epochenwechsels verbunden werden. / This lecture deals with the changes from the Middle Ages to early modern times in the archaeological
finds. It begins with the question whether there are differences in the finds. Four groups (letter, stove tiles, sundials,
pipes) are presented. In the second part these groups are combined with the cultural and historical breaks
and transformation of this era.
|
Page generated in 0.034 seconds