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  • 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.
1

Extraction-saponification variation of the plant pigment indicator method for forage evaluation

Byer, William J., January 1968 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1968. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliography.
2

Sociological and ecological studies on the tropical weed-vegetation of Pasuruan (the island of Java)

Kooper, Willem Johannes Cornelis, January 1927 (has links)
Thesis (doctoral)--Rijks-Universiteit te Utrecht, 1927. / Folded map and 29 folded tables in pocket. "Extrait du Recueil des travaux botaniques néerlandais, vol. XXIV, 1927." Includes bibliographical references (p. [241]-246).
3

Sociological and ecological studies on the tropical weed-vegetation of Pasuruan (the island of Java)

Kooper, Willem Johannes Cornelis, January 1927 (has links)
Thesis (doctoral)--Rijks-Universiteit te Utrecht, 1927. / Folded map and 29 folded tables in pocket. "Extrait du Recueil des travaux botaniques néerlandais, vol. XXIV, 1927." Includes bibliographical references (p. [241]-246).
4

Development of a diatom based index of biotic integrity for acid mine drainage impacted streams

Zalack, Jason T. January 2006 (has links)
Thesis (M.S.)--Ohio University, August, 2006. / Title from PDF t.p. Includes bibliographical references.
5

Forest biodiversity maintenance : instruments and indicators in the policy implementation /

Uliczka, Helen. January 2003 (has links)
Thesis (doctoral)--Swedish University of Agricultural Sciences, 2003. / Thesis documentation sheet inserted. Appendix reproduces five published papers and submitted manuscripts, four co-authored with others. Includes bibliographical references. Also partially issued electronically via World Wide Web in PDF format; online version lacks appendix.
6

Comparison between lichen, conifer needles, resin-based passive air sampling devices (PASDs), and snow to monitor semi-volatile organic compounds (SOCs) in the atmosphere /

Schrlau, Jill E. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2008. / Printout. Includes bibliographical references. Also available on the World Wide Web.
7

Elemental Composition of Vegetation as an Indicator of Technogenic Influence in Ust-Kamenogorsk City / Composition élémentaire de la végétation comme un indicateur de l'influence technogénique à Ust-Kamenogorsk / Элементный состав растительности как индикатор техногенного воздействия на территории г. Усть-Каменогорска

Yalaltdinova, Albina 12 November 2015 (has links)
L’accroissement de l’urbanisation et le développement industriel modifient la composition des géosphères de la Terre, en augmentant le nombre de problèmes géoécologiques et en affectant négativement la santé humaine. Actuellement, plus d'attention est accordée à la surveillance de l'état des composants de l’environnement naturel urbain. En Russie, les méthodes biogéochimiques (par ex., l'application de feuilles des arbres comme un récepteur naturel de la pollution) sont largement utilisées pour caractériser les problèmes géoécologiques des territoires dans des conditions d’intensité d’activités industrielles. Dans les pays occidentaux, les méthodes permettant d'estimer l'impact des facteurs ambiants sur la géosphère et la santé humaine sont répandues, parmi lesquelles l'évaluation des impacts du cycle de vie (ÉICV). Cependant, ces méthodes ne sont toujours pas appliquées en combinaison. L’utilisation d’indicateurs efficaces reflétant l'intensité de l'impact anthropique sur les écosystèmes; d’une cartographie de la distribution des polluants, ainsi que l'utilisation a posteriori de ces résultats dans l'évaluation des impacts sur l'environnement et la prédiction de leurs effets négatifs des entreprises industrielles (toxicité humaine et l'écotoxicité) sont pertinents pour l'évaluation complète des écosystèmes urbains. Cette méthode intégrée a été proposée et mise en œuvre sur le territoire d’Ust-Kamenogorsk, l'une des villes ayant subie des transformations technogéniques significatives au Kazakhstan avec un ensemble spécifique d’entreprises / With widespread urbanization and industrial development, the composition of the Earth's geosphere shells has changed, increasing the number of geoecological problems of territories and negatively affecting human health. Currently, more attention is being paid to monitoring the state of the components of urban natural environments. In Russia, biogeochemical methods (e.g. applying tree leaves as a kind of natural receptor of pollution) are widely used to characterize the geoecological problems of the territories under the pressure of intensive industrial activities. In Western countries, methods allowing us to estimate the impact of ambient factors on ecosystems and human health have become widespread; life cycle impact assessment is among them. However, these methods still have not been applied in combination. Therefore, the implementation of a comprehensive assessment of urban ecosystems using indicators reflecting the intensity of anthropogenic impact on ecosystems, following mapping of pollutant distributions, as well as the subsequent use of the results in the evaluation of the industrial enterprises' impact on the environment and in the prediction of the negative effects of pollution (human toxicity and ecotoxicity) are relevant. Such integrated method combining two methodologies was suggested and implemented in the territory of Ust-Kamenogorsk city, one of the significantly technogenic transformed cities in Kazakhstan with a specific set of enterprises

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