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Visualization of Excitonic Structure in the Fenna-Matthews-OlsonPhotosynthetic Complex by Polarization-Dependent Two-DimensionalElectronic Spectroscopy

Description: Photosynthetic light-harvesting proceeds by the collection and highly efficient transfer of energy through a network of pigment-protein complexes. Inter-chromophore electronic couplings and interactions between pigments and the surrounding protein determine energy levels of excitonic states and dictate the mechanism of energy flow. The excitonic structure (orientation of excitonic transition dipoles) of pigment-protein complexes is generally deduced indirectly from x-ray crystallography in comb… more
Date: May 26, 2008
Creator: Department of Chemistry, The University of Chicago; Department of Biology, Department of Chemistry, Washington University; Fleming, Graham; Read, Elizabeth L.; Schlau-Cohen, Gabriela S.; Engel, Gregory S. et al.
Partner: UNT Libraries Government Documents Department
open access

Water potential and starvation stress in deep subsurface microorganisms

Description: Nine intact core samples, collected aseptically from depths of 10--436 m near the Savannah River Plant in South Carolina, were tested for water potential, microbial numbers, and microbial activity. Although all samples were collected from below the water table, two samples (a Pee Dee clay from 238 m and a Middendorf clay from 324 m) showed unsaturated conditions ({minus}2.7 and {minus}2.1 MPa, respectively). Both of these samples had very low numbers of culturable cells, low microbial biomass (… more
Date: December 31, 1990
Creator: Kieft, Thomas L.; Rosacker, Laurie L.; Willcox, David & Franklin, Abraham J.
Partner: UNT Libraries Government Documents Department
open access

Water Potential and Starvation Stress in Deep Subsurface Microorganisms

Description: Nine intact core samples, collected aseptically from depths of 10--436 m near the Savannah River Plant in South Carolina, were tested for water potential, microbial numbers, and microbial activity. Although all samples were collected from below the water table, two samples (a Pee Dee clay from 238 m and a Middendorf clay from 324 m) showed unsaturated conditions ({minus}2.7 and {minus}2.1 MPa, respectively). Both of these samples had very low numbers of culturable cells, low microbial biomass (… more
Date: January 1, 1990
Creator: Kieft, Thomas L.; Rosacker, Laurie L.; Willcox, David & Franklin, Abraham J.
Partner: UNT Libraries Government Documents Department
open access

Primary production and biovolume of chroococcoid cyanobacteria in relation to other phytoplankton in southeastern US lakes

Description: Primary production rates and algal biovolumes were measured for various size classes of phytoplankton in three South Carolina lakes. Size classes of less than 3 ..mu..m accounted for 15 to 40% of the total primary production but only represented less than 5% of the total algal biovolume. Fluorescence microscopic analyses and laboratory culturing experiments indicated that chroococcoid cyanobacteria (unicellular blue-green algae) were primarily responsible for the relatively high primary product… more
Date: January 1, 1979
Creator: Tison, D. L. & Wilde, E. W.
Partner: UNT Libraries Government Documents Department
open access

Ecological distribution of Legionella pneumophila

Description: Bacteria were concentrated 500-fold from 20-liter water samples collected from 67 different lakes and rivers in the United States. The data suggest that Legionella pneumophila is part of the natural aquatic environment, and that the bacterium is capable of surviving extreme ranges of environmental conditions. The data further demonstrate the effectiveness of the direct fluorescent antibody technique for detecting L. pneumophila in natural aquatic systems. Smears of the concentrated samples were… more
Date: January 1, 1980
Creator: Fliermans, C. B.; Cherry, W. B.; Orrison, L. H.; Smith, S. J.; Tison, D. L. & Pope, D. H.
Partner: UNT Libraries Government Documents Department
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State of the world's raptors: Distributions, threats, and conservation recommendations

Description: Article exploring the International Union for the Conservation of Nature's Red List to examine the conservation status, distributions, threats, and conservation recommendations for all 557 raptor species.
Date: September 6, 2018
Creator: McClure, Christopher J.W.; Westrip, James R.S.; Johnson, Jeff A.; Schulwitz, Sarah; Virani, Munir Z.; Davies, Robert et al.
Partner: UNT College of Science
open access

Instructional Models for Course-Based Research Experience (CRE) Teaching

Description: This article presents a study that was done over a period of 3 years to explicate the instructional processes involved in teaching an undergraduate course-based research experience (CRE). The study presented here delineated a set of specific instructional practices used by active CRE instructors and modeled the relations between the use of these practices and specified outcomes. The resultant educational models should provide clarification of the ways in which the aims of CRE can be effectively… more
Date: January 3, 2022
Creator: Hanauer, David I.; Graham, Mark J.; Arnold, Rachel J.; Ayuk, Mary A.; Balish, Mitchell F.; Beyer, Andrea R. et al.
Partner: UNT College of Science
open access

Genomic diversity of bacteriophages infecting Microbacterium spp

Description: Article describing the isolation and genomic characterization of 116 phages that infect Microbacterium spp.
Date: June 18, 2020
Creator: Hughes, Lee E.; Jacobs-Sera, Deborah; Abad, Lawrence A.; Alvey, Richard M.; Anders, Kirk R.; Aull, Haley G. et al.
Partner: UNT College of Science
open access

The fifth international conference on Arabidopsis research

Description: This volume contains abstracts of oral and poster presentations made in conjunction with the Fifth International Conference on Arabidopsis Research held August 19--22, 1993 at the Ohio State University, Columbus, Ohio.
Date: December 31, 1993
Creator: Hangarter, R.; Scholl, R.; Davis, K. & Feldmann, K.
Partner: UNT Libraries Government Documents Department
open access

Comparative Genomics of Cluster O Mycobacteriophages

Description: This article describes a group of five closely related mycobacteriophages--Corndog, Catdawg, Dylan, Firecracker, and YungJamal--designated as Cluster O with long flexible tails but with unusual prolate capsids
Date: March 5, 2015
Creator: Cresawn, Steven G.; Pope, Welkin H.; Jacobs-Sera, Deborah; Bowman, Charles A.; Russell, Daniel A.; Dedrick, Rebekah M. et al.
Partner: UNT College of Arts and Sciences
open access

The compact Selaginella genome identifies changes in gene content associated with the evolution of vascular plants

Description: We report the genome sequence of the nonseed vascular plant, Selaginella moellendorffii, and by comparative genomics identify genes that likely played important roles in the early evolution of vascular plants and their subsequent evolution
Date: April 28, 2011
Creator: Grigoriev, Igor V.; Banks, Jo Ann; Nishiyama, Tomoaki; Hasebe, Mitsuyasu; Bowman, John L.; Gribskov, Michael et al.
Partner: UNT Libraries Government Documents Department
open access

Molecular ecology of aquatic microbes

Description: Abstracts of reports are presented from a meeting on Molecular Ecology of Aquatic Microbes. Topics included: opportunities offered to aquatic ecology by molecular biology; the role of aquatic microbes in biogeochemical cycles; characterization of the microbial community; the effect of the environment on aquatic microbes; and the targeting of specific biological processes.
Date: December 31, 1994
Partner: UNT Libraries Government Documents Department
open access

What controls phytoplankton production in nutrient-rich areas of the open sea

Description: The oceans play a critical role in regulating the global carbon cycle. Deep-ocean waters are roughly 200% supersaturated with CO{sub 2} compared to surface waters, which are in contact with the atmosphere. This difference is due to the flux of photosynthetically derived organic material from surface to deep waters and its subsequent remineralization, i.e. the biological pump''. The pump is a complex phytoplankton-based ecosystem. the paradoxical nature of ocean regions containing high nutrients… more
Date: June 25, 1991
Creator: Weiler, C. S.
Partner: UNT Libraries Government Documents Department
open access

What controls phytoplankton production in nutrient-rich areas of the open sea?

Description: The oceans play a critical role in regulating the global carbon cycle. Deep-ocean waters are roughly 200% supersaturated with CO{sub 2} compared to surface waters, which are in contact with the atmosphere. This difference is due to the flux of photosynthetically derived organic material from surface to deep waters and its subsequent remineralization, i.e. the ``biological pump``. The pump is a complex phytoplankton-based ecosystem. the paradoxical nature of ocean regions containing high nutrien… more
Date: June 25, 1991
Creator: Weiler, C. S.
Partner: UNT Libraries Government Documents Department
open access

4th International Plant Biomechanics Conference Proceedings (Abstracts)

Description: The 4th International Plant Biomechanics Conference facilitated an interdisciplinary exchange between scientists, engineers, and educators addressing the major questions encountered in the field of Plant Biomechanics. Subjects covered by the conference include: Evolution; Ecology; Mechanoreception; Cell Walls; Genetic Modification; Applied Biomechanics of Whole Plants, Plant Products, Fibers & Composites; Fluid Dynamics; Wood & Trees; Fracture Mechanics; Xylem Pressure & Water Transport; Modeli… more
Date: July 20, 2003
Creator: Telewski, Frank W.; Koehler, Lothar H. & Ewers, Frank W.
Partner: UNT Libraries Government Documents Department
open access

7th international symposium on photosynthetic prokaryotes

Description: This book contains the abstracts of all the presentations made either in oral or poster form, at the VII International Symposium on Photosynthetic Prokaryotes.
Date: January 1, 1991
Creator: Fuller, R.C.
Partner: UNT Libraries Government Documents Department
open access

7th international symposium on photosynthetic prokaryotes. Abstracts

Description: This book contains the abstracts of all the presentations made either in oral or poster form, at the VII International Symposium on Photosynthetic Prokaryotes.
Date: December 31, 1991
Creator: Fuller, R. C.
Partner: UNT Libraries Government Documents Department
open access

The Ecoresponsive Genome of Daphnia pulex

Description: This article discusses the ecoresponsive genome of Daphnia pulex.
Date: February 4, 2011
Creator: Colbourne, John K.; Pfrender, Michael E.; Gilbert, Donald; Thomas, W. Kelley; Tucker, Abraham; Oakley, Todd H. et al.
Partner: UNT College of Arts and Sciences
open access

Fifth international fungus spore conference

Description: This folio contains the proceedings of the Fifth International Fungal Spore Conference held August 17-21, 1991 at the Unicoi State Park at Helen, Georgia. The volume contains abstracts of each oral presentation as well as a collection of abstracts describing the poster sessions. Presentations were organized around the themes (1) Induction of Sporulation, (2) Nuclear Division, (3) Spore Formation, (4) Spore Release and Dispersal, and (4) Spore Germination.
Date: April 1, 1993
Creator: Timberlake, W.E.
Partner: UNT Libraries Government Documents Department
open access

Ninth International Workshop on Plant Membrane Biology

Description: This report is a compilation of abstracts from papers which were discussed at a workshop on plant membrane biology. Topics include: plasma membrane ATP-ases; plant-environment interactions, membrane receptors; signal transduction; ion channel physiology; biophysics and molecular biology; vaculor H+ pumps; sugar carriers; membrane transport; and cellular structure and function.
Date: December 31, 1993
Partner: UNT Libraries Government Documents Department
open access

One thousand plant transcriptomes and the phylogenomics of green plants

Description: Article describes the results of the One Thousand Plant Transcriptomes Initiative's efforts to sequence the vegetative transcriptomes of 1,124 species that span the diversity of plants in a broad sense (Archaeplastida), including green plants (Viridiplantae), glaucophytes (Glaucophyta) and red algae (Rhodophyta).
Date: October 23, 2019
Creator: One Thousand Plant Transcriptomes Initiative
Partner: UNT College of Science
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