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Entwicklung eines Ertragsschätzers für Kurzumtriebsbestände aus PappelHartmann, Kai-Uwe 12 August 2010 (has links)
Bisherige Verfahren zur Ertragsbestimmung von schnellwachsenden Baumarten im Kurzumtrieb sind entweder mit einem hohen Zeit- und Arbeitsaufwand verbunden und/oder haben destruktiven Charakter. Die vorliegende Arbeit beschäftigt sich mit der Entwicklung eines leicht anwendbaren, zerstörungsfreien und übertragbaren Ertragsschätzers für Kurzumtriebsbestände aus Pappel. Grundlage bildet die Standardisierung von Biomassefunktionen auf deren Basis ein standort- und klonunabhängiges Modell hergeleitet wird, das eine hinreichend genaue Schätzung des Biomassevorrates gestattet. Die Untersuchungen zu Grundlagen der Modellentwicklung und der Test verschiedener Modellansätze erfolgen auf der Basis von Korrelations- und Regressionsanalysen, Signifikanztests und Varianzanalysen. Die Prüfung der Schätzgenauigkeit basiert auf fünf Evaluierungskenngrößen. Für die Anwendung des klonunabhängigen, für Alter ≥ 3 Jahre und Bestandesdichten ≤ 25000 N/ha einsetzbaren Ertragsschätzers sind lediglich drei einfach und schnell zu erhebenden Ertragsgrößen (hm, N, dg) notwendig. Innerhalb der Modellgrenzen betragen die relativen maximalen Abweichungen zwischen Real- und Schätzwerten höchstens +/- 40 % und lässt sich der Biomassevorrat mit einer durchschnittlichen Differenz (Bias) von 7,1 % schätzen.
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Diagnostic rapide de la tuberculose pulmonaire par isolement et culture de Mycobacterium tuberculosis / Rapid diagnosis of pulmonary tuberculosis by isolation and culture of Mycobacterium tuberculosisGhodbane, Ramzi 26 November 2013 (has links)
Mycobacterium tuberculosis est la cause d’une des maladies infectieuses les plus fréquentes dans le monde causant la mort de plus de 1,2 millions de personnes chaque année selon l’organisation mondiale de la santé (OMS). Actuellement, la tuberculose à M. tuberculosis émerge chez d’autres espèces comme l’a montré notre revue bibliographique des cas de tuberculose à M. tuberculosis chez les primates non-humains, les éléphants d’Asie, les animaux de ferme, les animaux de compagnie et certains animaux sauvages. Nous avons montré que ces trois espèces survivent dans le sol pendant au moins 12 mois et restent pathogènes dans un modèle souris. Egalement nous avons montré que le sol infecté par M. tuberculosis est une source potentielle de contamination pour les animaux. Nous avons ensuite développé un protocole de culture rapide de M. tuberculosis, incluant un nouveau milieu de culture solide, des conditions optimisées d’incubation, et la détection des microcolonies par autofluorescence. Notre travail de thèse a permis de mettre en place des techniques et protocoles qui révolutionnent la culture et l’isolement de M. tuberculosis en réduisant les délais de culture et des antibiogrammes, un point déterminant pour la lutte contre la tuberculose notamment dans les pays à ressources limitées et les pays à forte émergence de souches de M. tuberculosis de plus en plus résistantes. Ces protocoles sont en cours de transfert pour la routine de laboratoire. / Mycobacterium tuberculosis is the cause of one of the most common infectious diseases in the world killing more than 1.2 million people each year according to the World Health Organization (WHO). Currently, M. tuberculosis tuberculosis emerges in other species like non-human primates, Asian elephants, farm animals and some wild animals. We have shown that three species of M. tuberculosis complex survive in the soil for at least 12 months and are pathogenic in a mouse model and M. tuberculosis-infected soil is a potential source of infection for animals. We then developed a protocol for rapid culture of M. tuberculosis, including a new solid culture medium, optimized conditions of incubation, and detection of microcolonies by autofluorescence. Our thesis has helped develop techniques and protocols that are revolutionizing the culture and isolation of M. tuberculosis by reducing delays culture and susceptibility testing, a crucial point for the fight against tuberculosis, especially in countries limited resources and countries with strong emergence of M. tuberculosis strains more resistant. These protocols are being transferred to the routine laboratory.
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Všeobecný význam porostů rychle rostoucích topolů. / Universal meaning of growths the fast - growing poplars.CHALOUPKA, Jiří January 2009 (has links)
The aim of those thesis was an analysis of a off - producing function the fast - growing growths namely in the several standpoints. I deal with a prosecution of the fast - growing poplars in a theoretic part at first. Then I specifyed the three main functions the fast - growing timber species namely at an off - producing usage. It means a function ameliorative, sanitation, aesthetic, biological, produce and insulative here. Mostly I then attended to an water and windy erosion.
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Improvement on the sales forecast accuracy for a fast growing company by the best combination of historical data usage and clients segmentationBurgada Muñoz, Santiago 29 October 2014 (has links)
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Previous issue date: 2014-10-29 / Industrial companies in developing countries are facing rapid growths, and this requires having in place the best organizational processes to cope with the market demand. Sales forecasting, as a tool aligned with the general strategy of the company, needs to be as much accurate as possible, in order to achieve the sales targets by making available the right information for purchasing, planning and control of production areas, and finally attending in time and form the demand generated. The present dissertation uses a single case study from the subsidiary of an international explosives company based in Brazil, Maxam, experiencing high growth in sales, and therefore facing the challenge to adequate its structure and processes properly for the rapid growth expected. Diverse sales forecast techniques have been analyzed to compare the actual monthly sales forecast, based on the sales force representatives’ market knowledge, with forecasts based on the analysis of historical sales data. The dissertation findings show how the combination of both qualitative and quantitative forecasts, by the creation of a combined forecast that considers both client´s demand knowledge from the sales workforce with time series analysis, leads to the improvement on the accuracy of the company´s sales forecast.
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