Global ETD Search

1	Diel Mediated Populus balsamifera Transcriptome Components Test the Impacts of Artificial Nighttime Lighting Skaf, Joseph 27 November 2012 (has links) Artificial nighttime lighting (ANL) is known to adversely affect animals, but little is known what the consequences are to plants. Two genotypes of Populus balsamifera, a common urban tree, were used to investigate how ANL impacts plants. While the two genotypes varied in their physiological sensitivity to ANL, poorer levels of net leaf carbon assimilation compared to control samples suggested that ANL perturbed the perception of time of day for these plants. Gene set analysis on a subset of PopGenExpress microarray samples identified time of day specific processes in P. balsamifera, and a set of candidate ANL-sensitive genes were identified from these. Transcript measurements from the two genotypes revealed that ANL affects plants at the molecular level, for the diel cycling of the putative ANL-sensitive genes was perturbed. Together, these results suggest that ANL affects plants at the physiological and molecular level by perturbing their perception of time of day. genomics microarrays gene set analysis trees clones artificial nighttime lighting environmental effects plants transcriptomics transcript abundance gene expression photoassimilation networks gene sets 0715 0306 0817 0307 0478
2	Diel Mediated Populus balsamifera Transcriptome Components Test the Impacts of Artificial Nighttime Lighting Skaf, Joseph 27 November 2012 (has links) Artificial nighttime lighting (ANL) is known to adversely affect animals, but little is known what the consequences are to plants. Two genotypes of Populus balsamifera, a common urban tree, were used to investigate how ANL impacts plants. While the two genotypes varied in their physiological sensitivity to ANL, poorer levels of net leaf carbon assimilation compared to control samples suggested that ANL perturbed the perception of time of day for these plants. Gene set analysis on a subset of PopGenExpress microarray samples identified time of day specific processes in P. balsamifera, and a set of candidate ANL-sensitive genes were identified from these. Transcript measurements from the two genotypes revealed that ANL affects plants at the molecular level, for the diel cycling of the putative ANL-sensitive genes was perturbed. Together, these results suggest that ANL affects plants at the physiological and molecular level by perturbing their perception of time of day. genomics microarrays gene set analysis trees clones artificial nighttime lighting environmental effects plants transcriptomics transcript abundance gene expression photoassimilation networks gene sets 0715 0306 0817 0307 0478
3	LIGHT AS A TOOL TO STRUCTURE URBAN PLANNING : A Socially-Oriented Approach GIL VENEGAS, IVONNE CRISTINA January 2018 (has links) How can light positively influence and encourage pedestrians’ engagement and interaction with the urban environments at night? In this Master Thesis, I questioned how to develop nighttime urban planning from a socially-oriented approach. In order to answer this question, I studied different evidence such as two publications, three lighting designers’ and a lighting studio’ approach; three case studies analyses, two of them located in Colombia (Cartagena and Medellín) and one in Sweden (Stockholm);and my own qualitative observation and quantitative measurements studied between April and May at Norrmalmstorg and Biblioteksgatan in Stockholm, Sweden. From that review, I propose a Guideline consisted of three sections: (1) Main dimensions, (2) lighting attributes, and (3) lighting systems in urban planning. In general, this guideline is a framework to develop the analytical tools for various design stages in nighttime urban planning. Human perception citizens engagement nighttime lighting nighttime urban life social interaction nighttime urban planning 24/7 cities Architecture Arkitektur Design Design

1

Page generated in 0.2868 seconds