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Comparative Thermal Denaturation Of Thermus Aquaticus And Escherichia Coli Type 1 Dna Polymerases, Irene Karantzeni, Carmen Ruiz, Chin Chi Liu, Vince J. Licata Sep 2003

Comparative Thermal Denaturation Of Thermus Aquaticus And Escherichia Coli Type 1 Dna Polymerases, Irene Karantzeni, Carmen Ruiz, Chin Chi Liu, Vince J. Licata

Faculty Publications

Thermal denaturations of the type 1 DNA polymerases from Thermus aquaticus (Taq polymerase) and Escherichia coli (Pol 1) have been examined using differential scanning calorimetry and CD spectroscopy. The full-length proteins are single-polypeptide chains comprising a polymerase domain, a proofreading domain (inactive in Taq) and a 5′ nuclease domain. Removal of the 5′ nuclease domains produces the 'large fragment' domains of Pol 1 and Taq, termed Klenow and Klentaq respectively. Although the high temperature stability of Taq polymerase is well known, its thermal denaturation has never been directly examined previously. Thermal denaturations of both species of polymerase are irreversible, precluding …

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Hrt: Decide Based On The Evidence, Sandra Lookinland, Renea L. Beckstrand Sep 2003

Hrt: Decide Based On The Evidence, Sandra Lookinland, Renea L. Beckstrand

Faculty Publications

The effectiveness and safety of hormone replacement therapy (HRT) have been studied since the 1980s. However, much of the available evidence was contradictory, and practitioners were uncertain how to counsel peri- and postmenopausal patients. In this article, recent evidence, both for and against use of HRT in peri- and postmenopausal patients, is compared to past studies with recommendations for practice.

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Scientific Collaboratories In Higher Education: Exploring Learning Style Preferences And Perceptions Of Technology, Diane H. Sonnenwald, Bin Li Sep 2003

Scientific Collaboratories In Higher Education: Exploring Learning Style Preferences And Perceptions Of Technology, Diane H. Sonnenwald, Bin Li

Faculty Publications

Scientific collaboratories hold the promise of providing students access to specialized scientific instruments, data and experts, enabling learning opportunities perhaps otherwise not available. However, evaluation of scientific collaboratories in higher education has lagged behind their development. We conducted a repeated-measures study that provided data regarding social interaction learning styles and perceptions of a scientific collaboratory system from 40 university science students working face-to-face and remotely. Students with a strong competitive learning style preference or who worked with a student with a strong competitive learning style reported a slightly more positive perception of the relative advantage, compatibility and complexity of the …

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Park's Tribolium Competition Experiments: A Non-Equilibrium Species Coexistence Hypothesis, Jeffrey Edmunds, J. M. Cushing, R. F. Costantino, Shandelle M. Henson, Brian Dennis, R. A. Desharnais Sep 2003

Park's Tribolium Competition Experiments: A Non-Equilibrium Species Coexistence Hypothesis, Jeffrey Edmunds, J. M. Cushing, R. F. Costantino, Shandelle M. Henson, Brian Dennis, R. A. Desharnais

Faculty Publications

1. In this journal 35 years ago, P. H. Leslie, T. Park and D. B. Mertz reported competitive exclusion data for two Tribolium species. It is less well-known that they also reported 'difficult to interpret' coexistence data. We suggest that the species exclusion and the species coexistence are consequences of a stable coexistence two-cycle in the presence of two stable competitive exclusion equilibria. 2. A stage-structured insect population model for two interacting species forecasts that as interspecific interaction is increased there occurs a sequence of dynamic changes (bifurcations) in which the classic Lotka-Volterra-type scenario with two stable competitive exclusion equilibria …

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Salt Modulates The Stability And Lipid Binding Affinity Of The Adipocyte Lipid-Binding Protein, Allyn J. Schoeffler, Carmen R. Ruiz, Allison M. Joubert, Xuemei Yang, Vince J. Licata Aug 2003

Salt Modulates The Stability And Lipid Binding Affinity Of The Adipocyte Lipid-Binding Protein, Allyn J. Schoeffler, Carmen R. Ruiz, Allison M. Joubert, Xuemei Yang, Vince J. Licata

Faculty Publications

Adipocyte lipid-binding protein (ALBP or aP2) is an intracellular fatty acid-binding protein that is found in adipocytes and macrophages and binds a large variety of intracellular lipids with high affinity. Although intracellular lipids are frequently charged, biochemical studies of lipid-binding proteins and their interactions often focus most heavily on the hydrophobic aspects of these proteins and their interactions. In this study, we have characterized the effects of KCl on the stability and lipid binding properties of ALBP. We find that added salt dramatically stabilizes ALBP, increasing its ΔG of unfolding by 3-5 kcal/mol. At 37 °C salt can more than …

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Advances In Satellite Radiometry For The Surveillance Of Surface Temperatures, Ocean Eddies And Upwelling Processes In The Gulf Of Mexico Using Goes-8 Measurements During Summer, Nan Walker, Soe Myint, Adele Babin, Alaric Haag Aug 2003

Advances In Satellite Radiometry For The Surveillance Of Surface Temperatures, Ocean Eddies And Upwelling Processes In The Gulf Of Mexico Using Goes-8 Measurements During Summer, Nan Walker, Soe Myint, Adele Babin, Alaric Haag

Faculty Publications

GOES-8 satellite infrared (IR) measurements have been under-utilized in oceanographic research, although they provide several advantages over measurements from other sensors such as the NOAA AVHRR. Frequent coverage (48 times/day) over large regions, low noise in the mid- IR channel, and sole use of nighttime data have enabled the development of improved techniques for producing "de-clouded" images and calculating accurate SSTs (with RMS errors < 0.5°C), over cloudy and humid regions such as the Gulf of Mexico. Animations of SST composite images reveal movements of the Loop Current, its frontal eddies and coastal upwelling even during summer months. GOES-12 and future GOES imagers for the next decade are missing the 12 μm channel; however, this study demonstrates that the mid-IR channel is even more useful than previously thought.

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Development And Evolution Of The Amniote Integument: Current Landscape And Future Horizon, Cheng Ming Chuong, Dominique G. Homberger Aug 2003

Development And Evolution Of The Amniote Integument: Current Landscape And Future Horizon, Cheng Ming Chuong, Dominique G. Homberger

Faculty Publications

This special issue on the development and evolution of the amniote integument begins with a discussion of the adaptations to terrestrial conditions, the acquisition of water-impermeability by the reptilian integument, and the initial formation of filamentous integumentary appendages that pave the way towards avian flight. Recent feather fossils are reviewed and a definition of feathers is developed. Hierarchical models are proposed for the formation of complex structures, such as feathers. Molecular signals that alter the phenotype of integumentary appendages at different levels of the hierarchy are presented. Tissue interactions and the roles of keratins in evolution are discussed and linked …

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Explaining And Predicting Patterns In Stochastic Population Systems, Shandelle M. Henson, Aaron A. King, R. F. Costantino, J. M. Cushing, Brian Dennis, Robert A. Desharnais Aug 2003

Explaining And Predicting Patterns In Stochastic Population Systems, Shandelle M. Henson, Aaron A. King, R. F. Costantino, J. M. Cushing, Brian Dennis, Robert A. Desharnais

Faculty Publications

Lattice effects in ecological time-series are patterns that arise because of the inherent discreteness of animal numbers. In this paper, we suggest a systematic approach for predicting lattice effects. We also show that an explanation of all the patterns in a population time-series may require more than one deterministic model, especially when the dynamics are complex.

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Perceptions Of Discrimination Among Persons With Serious Mental Illness, Patrick Corrigan, Vetta Thompson, David Lambert Phd, Yvette Sangster, Jeffrey G. Noel, Jean Campbell Aug 2003

Perceptions Of Discrimination Among Persons With Serious Mental Illness, Patrick Corrigan, Vetta Thompson, David Lambert Phd, Yvette Sangster, Jeffrey G. Noel, Jean Campbell

Faculty Publications

Objectives: The authors sought to gain further perspective on discrimination experienced by persons with mental illness by comparing self-reports of discrimination due to mental illness to self-reports of discrimination due to other group characteristics, such as race, gender, and sexual orientation. Methods: A total of 1,824 persons with serious mental illness who participated in a baseline interview for a multistate study on consumer-operated services completed a two-part discrimination questionnaire. The first part of the questionnaire assessed participants' perceptions about discrimination due to mental illness as well as more than half a dozen other group characteristics. The second part of the …

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Following The Lines: An Analysis Of Primate Genomic Variation At Human-Specific Line-1 Insertion Sites, Bethaney J. Vincent, Jeremy S. Myers, Huei Jin Ho, Gail E. Kilroy, Jerilyn A. Walker, W. Scott Watkins, Lynn B. Jorde, Mark A. Batzer Aug 2003

Following The Lines: An Analysis Of Primate Genomic Variation At Human-Specific Line-1 Insertion Sites, Bethaney J. Vincent, Jeremy S. Myers, Huei Jin Ho, Gail E. Kilroy, Jerilyn A. Walker, W. Scott Watkins, Lynn B. Jorde, Mark A. Batzer

Faculty Publications

The L1 Ta subfamily of long interspersed elements (LINEs) consists exclusively of human-specific L1 elements. Polymerase chain reaction-based screening in nonhuman primate genomes of the orthologous sites for 249 human L1 Ta elements resulted in the recovery of various types of sequence variants for approximately 12% of these loci. Sequence analysis was employed to capture the nature of the observed variation and to determine the levels of gene conversion and insertion site homoplasy associated with LINE elements. Half of the orthologous loci differed from the predicted sizes due to localized sequence variants that occurred as a result of common mutational …

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Recently Integrated Alu Elements And Human Genomic Diversity, Abdel Halim Salem, Gail E. Kilroy, W. Scott Watkins, Lynn B. Jorde, Mark A. Batzer Aug 2003

Recently Integrated Alu Elements And Human Genomic Diversity, Abdel Halim Salem, Gail E. Kilroy, W. Scott Watkins, Lynn B. Jorde, Mark A. Batzer

Faculty Publications

A comprehensive analysis of two Alu Y lineage subfamilies was undertaken to assess Alu-associated genomic diversity and identify new Alu insertion polymorphisms for the study of human population genetics. Recently integrated Alu elements (283) from the Yg6 and Yi6 subfamilies were analyzed by polymerase chain reaction (PCR), and 25 of the loci analyzed were polymorphic for insertion presence/absence within the genomes of a diverse array of human populations. These newly identified Alu insertion polymorphisms will be useful tools for the study of human genomic diversity. Our screening of the Alu insertion loci also resulted in the recovery of several "young" …

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Prey Nutritional Quality Interacts With Chemical Defenses To Affect Consumer Feeding And Fitness, Edwin Cruz-Rivera, Mark E. Hay Aug 2003

Prey Nutritional Quality Interacts With Chemical Defenses To Affect Consumer Feeding And Fitness, Edwin Cruz-Rivera, Mark E. Hay

Faculty Publications

Numerous studies have assessed the individual effects of prey nutritional quality or chemical defenses on consumer feeding behavior. However, little is known about how these traits interact to affect consumer feeding and performance. We tested the separate and interactive effects of prey chemical defenses and nutritional quality on the feeding behavior and fitness of six sympatric crustacean mesograzers. Natural concentrations of diterpene alcohols (dictyols) from the brown alga Dictyota menstrualis were incorporated, or not incorporated, into lower quality and higher quality foods to create artificial diets mimicking prey of variable value and defense. Five amphipods (Ampithoe longimana, A. valida, Cymadusa …

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Surface Salt Bridges Modulate Dna Wrapping By The Type Ii Dna-Binding Protein Tf1, Anne Grove Jul 2003

Surface Salt Bridges Modulate Dna Wrapping By The Type Ii Dna-Binding Protein Tf1, Anne Grove

Faculty Publications

The histone-like protein HU is involved in compaction of the bacterial genome. Up to 37 bp of DNA may be wrapped about some HU homologues in a process that has been proposed to depend on a linked disruption of surface salt bridges that liberates cationic side chains for interaction with the DNA. Despite significant sequence conservation between HU homologues, binding sites from 9 to 37 bp have been reported. TF1, an HU homologue that is encoded by Bacillus subtilis bacteriophage SPO1, has nM affinity for 37 bp preferred sites in DNA with 5-hydroxymethyluracil (hmU) in place of thymine. On the …

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Tidal Corrections For Topex Altimetry In The Coral Sea And Great Barrier Reef Lagoon: Comparisons With Long-Term Tide Gauge Records, D.M. Burrage, C.R. Steinberg, L.B. Mason, L. Bode Jul 2003

Tidal Corrections For Topex Altimetry In The Coral Sea And Great Barrier Reef Lagoon: Comparisons With Long-Term Tide Gauge Records, D.M. Burrage, C.R. Steinberg, L.B. Mason, L. Bode

Faculty Publications

[ 1] The well-known capability of TOPEX/Poseidon altimetry to map sea levels precisely in the deep oceans motivates its application to the topographically complex Coral Sea and NE Australian continental margin. We assess several global tidal models for correcting TOPEX altimetry in the Coral Sea and find CSR3.0 offers good overall performance, based on comparisons of model-predicted and tide gauge harmonic constituents. Using CSR3.0 tidal corrections, we evaluate residual Sea Surface Height (SSH) Root Mean Square (RMS) variability and residual M2 tidal alias errors. Away from large reefs and islands, CSR3.0 amplitude and phase errors for M2 are typically less …

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Maxizyme-Mediated Specific Inhibition On Mutant-Type P53 In Vitro, Xin Juan Kong, Yu Hu Song, Ju Sheng Lin, Huan Jun Huang, Nan Xia Wang, Nan Zhi Liu, Bin Li, You Xin Jin Jul 2003

Maxizyme-Mediated Specific Inhibition On Mutant-Type P53 In Vitro, Xin Juan Kong, Yu Hu Song, Ju Sheng Lin, Huan Jun Huang, Nan Xia Wang, Nan Zhi Liu, Bin Li, You Xin Jin

Faculty Publications

Aim: To evaluate the specific inhibition of maxizyme directing against mutant-type p53 gene (mtp53) at codon 249 in exon 7 (AGG→AGT) in vitro. Methods: Two different monomers of anti-mtp53 maxizyme (maxizyme right MzR, maxizyme left MzL) and control mutant maxizyme (G5→A5) were designed by computer and cloned into vector pBSKU6 (pBSKU6MzR, pBSKU6MzL). After being sequenced, the restrictive endonuclease site in pBSKU6MzR was changed by PCR and then U6MzR was inserted into pBSKU6MzL, the recombinant vector was named pU6Mz and pU6asMz (mutant maxizyme). Mtp53 and wild-type p53 (wtp53) gene fragments were cloned into pGEM-T vector under the T7 promoter control. The …

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P-Limitation Of Respiration In The Sargasso Sea And Uncoupling Of Bacteria From P-Regeneration In Size-Fractionation Experiments, Ingrid Obernosterer, Nobu Kawasaki, Ronald Benner Jul 2003

P-Limitation Of Respiration In The Sargasso Sea And Uncoupling Of Bacteria From P-Regeneration In Size-Fractionation Experiments, Ingrid Obernosterer, Nobu Kawasaki, Ronald Benner

Faculty Publications

Community respiration rates were measured in unfiltered seawater collected in the upper 75 m of the water column along a transect in the Sargasso Sea and at the Bermuda Atlantic Time-series Study (BATS) station (31° 50’ 00 N; 64° 10’ 00 W) during a cruise in June and July 2001. Community respiration rates in the upper 75 m of the water column averaged 1.1 ± 0.4 μM O2 d-1 and exhibited significant spatial and temporal variability. Concurrent determination of the heterotrophic and autotrophic community revealed no relationship between community respiration and the abundance of any of the major …

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Global Conformations, Hydrodynamics, And X-Ray Scattering Properties Of Taq And Escherichia Coli Dna Polymerases In Solution, Allison M. Joubert, Angela S. Byrd, Vince J. Licata Jul 2003

Global Conformations, Hydrodynamics, And X-Ray Scattering Properties Of Taq And Escherichia Coli Dna Polymerases In Solution, Allison M. Joubert, Angela S. Byrd, Vince J. Licata

Faculty Publications

Escherichia coli polymerase 1 (Pol 1) and Thermus aquaticus Taq polymerase are homologous Type I DNA polymerases, each comprised of a polymerase domain, a proofreading domain (inactive in Taq), and a 5′ nuclease domain. "Klenow" and "Klentaq" are the large fragments of Pol 1 and Taq and are functional polymerases lacking the 5′ nuclease domain. In the available crystal structures of full-length Taq, the 5′ nuclease domain is positioned in two different orientations: in one structure, it is extended out into solution, whereas in the other, it is folded up against the polymerase domain in a more compact structure. Analytical …

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Stereoselective In Vitro Formation Of C-Type Cytochrome Variants From Hydrogenobacter Thermophilus Containing Only A Single Thioether Bond, Oliver Daltrop, Kevin M. Smith, Stuart J. Ferguson Jul 2003

Stereoselective In Vitro Formation Of C-Type Cytochrome Variants From Hydrogenobacter Thermophilus Containing Only A Single Thioether Bond, Oliver Daltrop, Kevin M. Smith, Stuart J. Ferguson

Faculty Publications

In vitro formation of Hydrogenobacter thermophilus cytochrome c 552 has previously been demonstrated (Daltrop, O., Allen, J. W. A., Willis, A. C., and Ferguson, S. J. (2002) Proc. Natl. Acad. Sci. U. S. A. 99, 7872-7876). Now we report that the single cysteine variants of H. thermophilus c552, which bind heme via a single thioether bond, also form in vitro. Furthermore, reaction of the apocytochromes containing either AXXCH or CXXAH in the binding motif with 2-vinyldeuteroheme and 4-vinyldeuteroheme resulted predominantly in covalent attachment between Cys-11 and the 2-vinyl moiety and Cys-14 and the 4-vinyl functionality. This observation shows that the …

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Global Patterns Of Dissolved N, P And Si In Large Rivers, R. Eugene Turner, Nancy N. Rabalais, D. Justic', Q. Dortch Jul 2003

Global Patterns Of Dissolved N, P And Si In Large Rivers, R. Eugene Turner, Nancy N. Rabalais, D. Justic', Q. Dortch

Faculty Publications

The concentration of dissolved inorganic nitrogen (DIN), dissolved nitrate-N, Total-N (TN), dissolved inorganic phosphate (DIP), total phosphorus (TP), dissolved silicate-Si (DSi) and their ratios in the world's largest rivers are examined using a global data base that includes 37% of the earth's watershed area and half its population. These data were compared to water quality in 42 subbasins of the relatively well-monitored Mississippi River basin (MRB) and of 82 small watersheds of the United States. The average total nitrogen concentration varies over three orders of magnitude among both world river watersheds and the MRB, and is primarily dependent on variations …

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Methacholine-Induced Airway Hyperresponsiveness Is Dependent On GαQ Signaling, Michael T. Borchers, T. Biechele, J. P. Justice, T. Ansay, S. Cormier, V. Mancino, T. M. Wilkie, M. I. Simon, N. A. Lee, J. J. Lee Jul 2003

Methacholine-Induced Airway Hyperresponsiveness Is Dependent On GαQ Signaling, Michael T. Borchers, T. Biechele, J. P. Justice, T. Ansay, S. Cormier, V. Mancino, T. M. Wilkie, M. I. Simon, N. A. Lee, J. J. Lee

Faculty Publications

Airway function in health and disease as well as in response to bronchospastic stimuli (i.e., irritants, allergens, and inflammatory mediators) is controlled, in part, by cholinergic muscarinic receptor regulation of smooth muscle. In particular, the dependence of airway smooth muscle contraction/relaxation on heterotrimeric G protein-coupled receptor signaling suggests that these events underlie the responses regulating airway function. Gαq-containing G proteins are proposed to be a prominent signaling pathway, and the availability of knockout mice deficient of this subunit has allowed for an investigation of its potential role in airway function. Airway responses in Gαq-deficient mice (activities assessed by both tracheal …

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Genetic Variation Among World Populations: Inferences From 100 Alu Insertion Polymorphisms, W. Scott Watkins, Alan R. Rogers, Christopher T. Ostler, Steve Wooding, Michael J. Bamshad, Anna Marie E. Brassington, Marion L. Carroll, Son V. Nguyen, Jerilyn A. Walker, B. V.Ravi Prasad, P. Govinda Reddy, Pradipta K. Das, Mark A. Batzer, Lynn B. Jorde Jul 2003

Genetic Variation Among World Populations: Inferences From 100 Alu Insertion Polymorphisms, W. Scott Watkins, Alan R. Rogers, Christopher T. Ostler, Steve Wooding, Michael J. Bamshad, Anna Marie E. Brassington, Marion L. Carroll, Son V. Nguyen, Jerilyn A. Walker, B. V.Ravi Prasad, P. Govinda Reddy, Pradipta K. Das, Mark A. Batzer, Lynn B. Jorde

Faculty Publications

We examine the distribution and structure of human genetic diversity for 710 individuals representing 31 populations from Africa, East Asia, Europe, and India using 100 Alu insertion polymorphisms from all 22 autosomes. Alu diversity is highest in Africans (0.349) and lowest in Europeans (0.297). Alu insertion frequency is lowest in Africans (0.463) and higher in Indians (0.544), E. Asians (0.557), and Europeans (0.559). Large genetic distances are observed among African populations and between African and non-African populations. The root of a neighbor-joining network is located closest to the African populations. These findings are consistent with an African origin of modern …

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Contributions Of Atmospheric Co And Hydrogen Uptake To Microbial Dynamics On Recent Hawaiian Volcanic Deposits, Gary M. King Jul 2003

Contributions Of Atmospheric Co And Hydrogen Uptake To Microbial Dynamics On Recent Hawaiian Volcanic Deposits, Gary M. King

Faculty Publications

A series of sites were established on Hawaiian volcanic deposits ranging from about 18 to 300 years old. Three sites occurred in areas that supported tropical rain forests; the remaining sites were in areas that supported little or no plant growth. Sites >26 years old consumed atmospheric CO and hydrogen at rates ranging from about 0.2 to 5 mg of CO m-2 day-1 and 0.1 to 4 mg of H2 m-2 day-1, respectively. Respiration, measured as CO2 production, for a subset of the sites ranged from about 40 to > 1,400 mg of CO2 m-2 day-1. CO and H2 accounted for …

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Common And Distinguishing Regulatory And Expression Characteristics Of The Highly Related Korb Proteins Of Streptomycete Plasmids Pij101 And Psb24.2, Matthew J. Ducote, Gregg S. Pettis Jul 2003

Common And Distinguishing Regulatory And Expression Characteristics Of The Highly Related Korb Proteins Of Streptomycete Plasmids Pij101 And Psb24.2, Matthew J. Ducote, Gregg S. Pettis

Faculty Publications

The conjugative plasmid pIJ101 of the spore-forming bacterium Streptomyces lividans contains a regulatory gene, korB, whose product is required to repress potentially lethal expression of the pIJ101 kilB gene. The KorB protein also auto-regulates korB gene expression and may be involved in control of pIJ101 copy number. KorB (pIJ101) is expressed as a 10-kDa protein in S. lividans that is immediately processed to a mature 6-kDa repressor molecule. The conjugative Streptomyces cyanogenus plasmid pSB24.1 is deleted upon entry into S. lividans to form pSB24.2, a nonconjugative derivative that contains a korB gene nearly identical to that of pIJ101. Previous evidence …

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Evidence Of An Association Among Age-Related Changes In Physical, Psychomotor And Autonomic Function, Robert H. Wood, Jan M. Hondzinski, C. Matthew Lee Jul 2003

Evidence Of An Association Among Age-Related Changes In Physical, Psychomotor And Autonomic Function, Robert H. Wood, Jan M. Hondzinski, C. Matthew Lee

Faculty Publications

Background: autonomic modulation of the heart, as measured by heart rate variability, is directly associated with cardiorespiratory fitness and inversely associated with all-cause mortality. The extent to which cardiorespiratory fitness and heart rate variability are related in older adults is difficult to ascertain due to difficulties in assessing physical fitness among older age groups. Objective: to examine heart rate variability and measures of physical function, thereby allowing for the inclusion of a greater cross-section of older adults than can be tested using traditional fitness tests. Methods: 39 older adults (mean age: 73.2±8.1 years; range=60-93 years) underwent evaluation of short-term (5 …

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“$20,000 In Six Weeks”, Meredith Jones-Gray Jul 2003

“$20,000 In Six Weeks”, Meredith Jones-Gray

Faculty Publications

No abstract provided.

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Exercise And Physical Activity In The Prevention And Treatment Of Atherosclerotic Cardiovascular Disease: A Statement From The Council On Clinical Cardiology (Subcommittee On Exercise, Rehabilitation, And Prevention) And The Council On Nutrition, Physical Activity, And Metabolism (Subcommittee On Physical Activity), Paul D. Thompson, David Buchner, Ileana L. Piña, Gary J. Balady, Mark A. Williams, Bess H. Marcus, Kathy Berra, Steven N. Blair, Fernando Costa, Barry Franklin, Gerald F. Fletcher, Neil F. Gordon, Russell R. Pate, Beatriz L. Rodriguez, Antronette K. Yancey, Nanette K. Wenger Jun 2003

Exercise And Physical Activity In The Prevention And Treatment Of Atherosclerotic Cardiovascular Disease: A Statement From The Council On Clinical Cardiology (Subcommittee On Exercise, Rehabilitation, And Prevention) And The Council On Nutrition, Physical Activity, And Metabolism (Subcommittee On Physical Activity), Paul D. Thompson, David Buchner, Ileana L. Piña, Gary J. Balady, Mark A. Williams, Bess H. Marcus, Kathy Berra, Steven N. Blair, Fernando Costa, Barry Franklin, Gerald F. Fletcher, Neil F. Gordon, Russell R. Pate, Beatriz L. Rodriguez, Antronette K. Yancey, Nanette K. Wenger

Faculty Publications

No abstract provided.

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Religiousness And Depression: Evidence For A Main Effect And The Moderating Influence Of Stressful Life Events, Timothy B. Smith, Michael E. Mccullough, Justin Poll Jun 2003

Religiousness And Depression: Evidence For A Main Effect And The Moderating Influence Of Stressful Life Events, Timothy B. Smith, Michael E. Mccullough, Justin Poll

Faculty Publications

The association between religiousness and depressive symptoms was examined with meta-analytic methods across 147 independent investigations (N = 98,975). Across all studies, the correlation between religiousness and depressive symptoms was –.096, indicating that greater religiousness is mildly associated with fewer symptoms. The results were not moderated by gender, age, or ethnicity, but the religiousness–depression association was stronger in studies involving people who were undergoing stress due to recent life events. The results were also moderated by the type of measure of religiousness used in the study, with extrinsic religious orientation and negative religious coping (e.g., avoiding difficulties through religious activities, …

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Chromatin Of Endoreduplicated Pavement Cells Has Greater Range Of Movement Than That Of Diploid Guard Cells In Arabidopsis Thaliana, Naohiro Kato, Eric Lam Jun 2003

Chromatin Of Endoreduplicated Pavement Cells Has Greater Range Of Movement Than That Of Diploid Guard Cells In Arabidopsis Thaliana, Naohiro Kato, Eric Lam

Faculty Publications

In the current model of chromatin organization in the interphase cell nucleus, chromosomes are organized into territories. Although constrained diffusion of chromatin in interphase cells has been confirmed in all cell types examined, little is known about chromatin dynamics in plant interphase cells. In this work, we measured for the first time interphase chromatin dynamics in plants using the green-fluorescent-protein-mediated chromatin-tagging system. Moreover, we compared the dynamics of diploid guard cells and endoreduplicated pavement cells. The movement of tagged loci in live seedlings shows constrained behavior in both types of nuclei. However, we found that the apparent confinement area for …

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Predicting Severe Wildfire Years In The Florida Everglades, Brian Beckage, William J. Platt Jun 2003

Predicting Severe Wildfire Years In The Florida Everglades, Brian Beckage, William J. Platt

Faculty Publications

© 2003 The Ecological Society of America. Wildfires result in important ecological benefits to many ecosystems, but have costs associated with fire fighting and property loss. Accurate, timely forecasts of the severity of upcoming wildfire seasons could facilitate wildfire management, limiting the most destructive aspects of fires, while preserving their ecological benefits. We demonstrate an approach where time series models are used to predict the severity of the wildfire season in Everglades National Park in southern Florida 3 months and 1 year beforehand. Model predictions contained all obserations within a 90% credible interval and also anticipated severe wildfire seasons. These …

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Habitat Selection Of The Channel Darter, Percina (Cottogaster) Copelandi, A Surrogate For The Imperiled Pearl Darter, Percina Aurora, Pamela J. Schofield, Stephen T. Ross Jun 2003

Habitat Selection Of The Channel Darter, Percina (Cottogaster) Copelandi, A Surrogate For The Imperiled Pearl Darter, Percina Aurora, Pamela J. Schofield, Stephen T. Ross

Faculty Publications

Percina (Cottogaster) aurora is an imperiled species under consideration for listing by the U.S. Fish and Wildlife Service. To better understand habitat use of P. aurora, we studied a related and more abundant Cottogaster species, Percina copelandi, from the Ouachita River, Arkansas. We used a laboratory stream system to examine mesohabitat selection (pools versus riffles) and microhabitat selection (substratum particle size) of P. copelandi over three temperature regimes (summer, spring, and winter). Percina copelandi selected pool habitats over riffles and selected pools with coarse substrata (e.g., cobble) over fine substrata (e.g., gravel). In riffles, …

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