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Articles 3361 - 3390 of 4620
Full-Text Articles in Entire DC Network
An Assessment Of Water Quality In Ensign Hollow, Clayton And Fayette Counties, In Northeast Iowa, Rick Klann, Jaime Platts
An Assessment Of Water Quality In Ensign Hollow, Clayton And Fayette Counties, In Northeast Iowa, Rick Klann, Jaime Platts
Journal of the Iowa Academy of Science: JIAS
Water quality and benthic invertebrates in the Ensign Hollow watershed, southwestern Clayton County and southeastern Fayette County, Iowa, were monitored from 2000 to 2001. Measurements of physical and chemical parameters of water quality, as well as analysis of benthic invertebrates, all indicated that streams of the Ensign Hollow watershed were exposed to slight organic pollution. Furthermore, the greatest threat to this watershed appeared to be sedimentation introduced through runoff.
A Framework For Reproductive Models Of Mourning Doves, David L. Otis
A Framework For Reproductive Models Of Mourning Doves, David L. Otis
Journal of the Iowa Academy of Science: JIAS
Population models can be used to aid in development and evaluation of harvest management strategies for game species. No current models are available for the Mourning Dove (Zenaida macroura), which is considered a migratory game bird in 37 states. A predictive model for annual reproduction is a necessary component of such a model. I used a simple construct based on parameters of the Mourning Dove breeding cycle to develop probability distributions of annual per capita reproduction for each of five geographical regions in the U.S. Confidence intervals for model predictions included average estimates from published studies in all regions except …
Editorial Board & Iowa Academy Of Science Officers And Directors
Editorial Board & Iowa Academy Of Science Officers And Directors
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
Recent Observations Of The Distribution And Status Of Freckled Madtom And First Record Of Spotted Gar In Iowa, Melvin C. Bowler
Recent Observations Of The Distribution And Status Of Freckled Madtom And First Record Of Spotted Gar In Iowa, Melvin C. Bowler
Journal of the Iowa Academy of Science: JIAS
The distribution and status of Iowa's fishes were last extensively described in Iowa Fish and Fishing (Harlan et al. 1987). Since then, numerous fish collections have been made in Iowa's interior and bordering rivers and streams. In this paper, I describe recent collections of freckled mad tom (Noturus nocturnus) and spotted gar (Lepisosteus oculatus) from the Upper Mississippi. River (UMR). Six specimens of N. nocturnus were collected from Pool 13 of the UMR in 2001. Although the first documented specimens of N. nocturnus in Iowa were collected in the English River in 1984, few collections have been made throughout the …
Iowa Academy Of Science 115th Annual Meeting [2003]: Advance Program, Iowa Academy Of Science
Iowa Academy Of Science 115th Annual Meeting [2003]: Advance Program, Iowa Academy Of Science
Iowa Academy of Science Documents
Contains information about the schedule and presentations for the 2003 annual meeting of the Iowa Academy of Science.
Iowa Academy Of Science 115th Annual Meeting [Program, 2003], Iowa Academy Of Science
Iowa Academy Of Science 115th Annual Meeting [Program, 2003], Iowa Academy Of Science
Iowa Academy of Science Documents
Contents:
Program Summary --- 2
General Session Speakers --- 4
Symposia Programs --- 7
Special Panel --- 9
Awards --- 10
Section Programs/Special Sessions/Abstracts --- 11
Agricultural Science (poster) --- 12
Anthropology --- 13
Botany --- 16
Cellular, Molecular & Microbiology and Physiology --- 20
Chemistry: Inorganic, Analytical & Physical --- 23
Chemistry: Organic & Biological --- 23
Conservation --- 25
Engineering --- 29
Environmental Science and Health --- 35
Geology --- 37
Physics --- 41
Physiology (posters) --- 44
Zoology --- 46
Mussel Symposia --- 52
Energy Symposia --- 56
IAS Officers & Directors --- 59
IAS Annual Meeting …
Infant Mortality After Takeovers In Wild Ethiopian Hamadryas Baboons, Larissa Swedell, Teklu Tesfaye
Infant Mortality After Takeovers In Wild Ethiopian Hamadryas Baboons, Larissa Swedell, Teklu Tesfaye
Publications and Research
In this paper, we report the first observational evidence of infanticide in wild hamadryas baboons. The study group inhabits the lowlands of the northern Rift Valley in Ethiopia and has been under observation for over 1200 hours, on and off, since October 1996. Here we report observations from August and September 2002 of the consequences of two takeovers of known females with black infants. After the first takeover, the respective infant disappeared and was presumed dead within eleven days of the takeover. After the second takeover, the infant incurred repeated severe aggression from its mother’s new leader male and eventually …
Table Of Contents
Journal of the South Carolina Academy of Science
No abstract provided.
Development Of An Automated Thiopurine Methyltransferase (Tpmt) Genotyping Assay, Mary Corcoran
Development Of An Automated Thiopurine Methyltransferase (Tpmt) Genotyping Assay, Mary Corcoran
Theses
Thiopurine methyltransferase (TPMT) is a cytosolic enzyme that catalyses the S- methylation of aromatic and sulphydryl compounds known as the thiopurines. These therapeutic agents are used in the treatment of acute lymphoblastic leukemia, autoimmune disorders, inflammatory bowel disease and organ transplant recipients.
Erythrocyte TPMT activity is polymorphic and patients with intermediate or deficient TPMT are at significant risk for excessive toxicity after receiving ‘standard’ doses of thiopurine medications. The activity of TPMT is inherited as an autosomal co-dominant trait. Several mutations in the TPMT gene have been described that correlate with a low activity phenotype. Three mutations G238C, G460A and …
The Role Of Predator-Induced Polyphenism In The Evolution Of Cognition: A Baldwinian Speculation, Scott F. Gilbert
The Role Of Predator-Induced Polyphenism In The Evolution Of Cognition: A Baldwinian Speculation, Scott F. Gilbert
Biology Faculty Works
No abstract provided.
Restoration And Monitoring Of The River Otter Population In Iowa, J. A. Pitt, W. R. Clark, R. D. Andrews, K. P. Schlarbaum, D. D. Hoffman, S. W. Pitt
Restoration And Monitoring Of The River Otter Population In Iowa, J. A. Pitt, W. R. Clark, R. D. Andrews, K. P. Schlarbaum, D. D. Hoffman, S. W. Pitt
Journal of the Iowa Academy of Science: JIAS
Northern river otters (Lontra canadensis) were widespread in North America at the time of European settlement. However, river otters were extirpated from most of Iowa in the early 1900s due to habitat degradation and unregulated harvest. In 1985, the Iowa Department of Natural Resources began an effort to restore the river otter population throughout the state, including a pilot study of survival to determine if establishment was feasible. Annual survival was estimated to be 86% during the pilot study. River otters dispersed an average of about 11 km from the point of release and exhibited habitat use typical for the …
The Influence Of Soil Water Content, Calcite Content, And Temperature On Bulk Electrical Conductivity, Eric C. Brevik, Jaehoon Lee, Thomas E. Fenton, Robert Horton
The Influence Of Soil Water Content, Calcite Content, And Temperature On Bulk Electrical Conductivity, Eric C. Brevik, Jaehoon Lee, Thomas E. Fenton, Robert Horton
Journal of the Iowa Academy of Science: JIAS
Electrical conductivity (EC) as measured by the Geonics® EM-38 has shown promise as a soil survey tool. EC is determined by a combination of soluble salts, clay content and mineralogy, water content, and temperature. While investigating use of the EM-38 for soil survey purposes, it is important to understand the relative contribution of each of these variables on EC. A laboratory experiment was set up to determine the relative influence of water content, temperature, and calcite content on EC using time-domain reflectometry (TDR) probes. TDR was used as a proxy for the EM-38 because of the large volume of soil …
Dark Wilderness A Phenomenological Exploration Of The Idea Of Cave Wilderness, Patricia E. Seiser
Dark Wilderness A Phenomenological Exploration Of The Idea Of Cave Wilderness, Patricia E. Seiser
Graduate Theses, Dissertations, and Problem Reports (ETD)
It has been almost forty years since the passage of the 1964 Wilderness Act and the establishment of the National Wilderness Preservation System. Forty years later, we still have not seen a wilderness that is not a surface environment. There exist neither subterranean nor marine wilderness areas. Efforts on behalf of cave wilderness have focused on the 1964 Wilderness Act legal definition of wilderness. Perhaps what is required is a different concept for the establishment of cave wilderness. This study explored the idea of cave wilderness from a human dimension perspective, via focus groups, using stakeholders from two cave regions …
The Development Of A Multipurpose Trap (The Nzi) For Tsetse And Other Biting Flies, S. Mihok
The Development Of A Multipurpose Trap (The Nzi) For Tsetse And Other Biting Flies, S. Mihok
All Peer-Reviewed Publications
New trap designs for tsetse (Glossinidae), stable flies (Muscidae: Stomoxyinae), and horse flies (Tabanidae) were tested in Kenya to develop a multipurpose trap for biting flies. Many configurations and colour/fabric combinations were compared to a simplified, blue-black triangular trap to identify features of design and materials that result in equitable catches. New designs were tested against conventional traps, with a focus on Glossina pallidipes Austen and G. longipennis Corti, Stomoxys niger Macquart, and Atylotus agrestis (Wiedemann). A simple design based on minimal blue and black rectangular panels, for attraction and contrast, with a trap body consisting of an innovative configuration …
Liberal Arts - Fall 2002, University Of Mississippi. College Of Liberal Arts
Liberal Arts - Fall 2002, University Of Mississippi. College Of Liberal Arts
Liberal Arts Newsletters
First fellowship recipients represent psychology, chemistry, English
Challenges, Strategies, And Tools For Research Scientists: Using Web-Based Information Resources, Danielle Bodrero Hoggan
Challenges, Strategies, And Tools For Research Scientists: Using Web-Based Information Resources, Danielle Bodrero Hoggan
E-JASL: Electronic Journal of Academic and Special Librarianship (1999-2009, Volumes 1-10)
Scientists face many challenges in harnessing web-based resources. Information overload, misinformation, fees, poorly designed navigation, and loss of browsability all hamper the scientist searcher. In addition, many scientists rely on only one or two databases and often miss unique information that is available through other sources. Librarians can team up with scientists to develop strategies to overcome the challenges of web-based information. For example, a librarian can teach effective information seeking techniques, including how to use controlled vocabularies, how to evaluate information on the web, and how to complement web-based resources with print resources. Librarians can also help scientists to …
Extent Of Digestion Affects The Success Of Amplifying Human Dna From Blood Meals Of Anopheles Gambiae (Diptera: Culicidae), W. R. Mukabana, W. Takken, P. Seda, G. F. Killeen, W. A. Hawley, B. G.J. Knols
Extent Of Digestion Affects The Success Of Amplifying Human Dna From Blood Meals Of Anopheles Gambiae (Diptera: Culicidae), W. R. Mukabana, W. Takken, P. Seda, G. F. Killeen, W. A. Hawley, B. G.J. Knols
All Peer-Reviewed Publications
The success of distinguishing blood meal sources of Anopheles gambiae Giles through deoxyribonucleic acid (DNA) profiling was investigated by polymerase chain reaction (PCR) amplification at the TC-11 and VWA human short tandem repeats (STR) loci. Blood meal size and locus had no significant effect on the success of amplifying human DNA from blood meals digested for 0, 8, 16, 24 and 32 h (P = 0.85 and 0.26 respectively). However, logistic regression found a significant negative relationship between time since ingestion and the success probability of obtaining positive PCR products among meals digested for between 8 and 32 h (P …
Dietary Patterns And Prostate Cancer Risk In The Nhefs Cohort, Marilyn Tseng
Dietary Patterns And Prostate Cancer Risk In The Nhefs Cohort, Marilyn Tseng
Kinesiology and Public Health
We examined the association between dietary patterns and prostate cancer risk using data from the first National Health and Nutrition Examination Epidemiologic Follow-up Study. The study population included 3,779 men followed 1982-4 to 1992, with 136 prostate cancer cases identified during the follow-up. Principal components analysis on responses to a lOS-item diet questionnaire in 1982-84 was used to identify dietary patterns, and scores representing level of intake of each pattern were categorized into tertiles. Three distinct patterns were identified: a vegetable-fruit pattern, a red meat-starch pattern characterized by intake of beef, pork, potatoes, and sweets, and a southern pattern characterized …
Compositional Trends And Spatial Patterns Over A Quarter Century: Forest Dynamics Of Dobbs Park, Indiana, Nancy Hoalst Pullen
Compositional Trends And Spatial Patterns Over A Quarter Century: Forest Dynamics Of Dobbs Park, Indiana, Nancy Hoalst Pullen
All-Inclusive List of Electronic Theses and Dissertations
Thirty-five permanent plots were reexamined to identify and describe the spatial and temporal characteristics of Dobbs Park, an isolated old-growth forest stand in westcentral Indiana. The 3.6 ha stand was resurveyed in summer 2000, with all stems greater than 10 cm dbh measured, and accessions and deaths recorded. The results are compared to original data collected in summer 1974, with compositional and spatial patterns identified via GIS and spatial analysis. The stand has declined slightly in density from 342 stems/ha to 333.15 stems/hectare (-2.6%) while basal area (dominance) for the stand has increased from 23.6 m2/ha to 25.8 m2/ha (+8.8%) …
The Annual Meeting Of The Iowa Academy Of Science April 19-20, 2002 [Program, 114th Meeting], Iowa Academy Of Science
The Annual Meeting Of The Iowa Academy Of Science April 19-20, 2002 [Program, 114th Meeting], Iowa Academy Of Science
Iowa Academy of Science Documents
Contents:
Program Summary --- 1
General Session Speakers --- 4
Awards --- 7
Symposia Programs --- 8
Special Events --- 8
Poster Sessions --- 9
Section Programs/Special Sessions --- 9
Agricultural Sciences --- 9
Anthropology --- 10, 16
Bioterrorism Symposia --- 24
Botany --- 11
Cellular, Molecular & Microbiology --- 17
Chemical Education --- 24
Chemistry: Inorganic, Analytical & Physical --- 18
Chemistry: Organic & Biological --- 18
College Science Teaching --- 11, 19
Community College Biologists --- 20
Conservation --- 20
Earth Science Teaching --- 24
Elementary Science Teaching --- 24
Engineering --- 12
Environmental Science and Health --- …
Program Abstracts, 114th Session, Iowa Academy Of Science, April 19-20, 2002, Iowa Academy Of Science
Program Abstracts, 114th Session, Iowa Academy Of Science, April 19-20, 2002, Iowa Academy Of Science
Iowa Academy of Science Documents
Presentation abstracts from the annual meeting of the Iowa Academy of Science
2002 - The Seventh Annual Symposium Of Student Scholars
2002 - The Seventh Annual Symposium Of Student Scholars
Symposium of Student Scholars Program Books
The full program book from the Seventh Annual Symposium of Student Scholars, held on April 5, 2002. Includes abstracts from the presentations and posters.
Genomic Microsatellites As Evolutionary Chronometers: A Test In Wild Cats, Carlos A. Driscoll, Marilyn Menotti-Raymond, George Nelson, David Goldstein, Stephen J. O'Brien
Genomic Microsatellites As Evolutionary Chronometers: A Test In Wild Cats, Carlos A. Driscoll, Marilyn Menotti-Raymond, George Nelson, David Goldstein, Stephen J. O'Brien
Biology Faculty Articles
Nuclear microsatellite loci (2- to 5-bp tandem repeats) would seem to be ideal markers for population genetic monitoring because of their abundant polymorphism, wide dispersal in vertebrate genomes, near selective neutrality, and ease of assessment; however, questions about their mode of generation, mutation rates and ascertainment bias have limited interpretation considerably. We have assessed the patterns of genomic diversity for ninety feline microsatellite loci among previously characterized populations of cheetahs, lions and pumas in recapitulating demographic history. The results imply that the microsatellite diversity measures (heterozygosity, allele reconstitution and microsatellite allele variance) offer proportionate indicators, albeit with large variance, of …
Chimpanzee Signing: Darwinian Realities And Cartesian Delusions, Roger S. Fouts, Mary Lee A. Jensvold, Deborah Fouts
Chimpanzee Signing: Darwinian Realities And Cartesian Delusions, Roger S. Fouts, Mary Lee A. Jensvold, Deborah Fouts
Anthropology and Museum Studies Faculty Scholarship
Truly discontinuous, all-or-none phenomena must be rare in nature. Historically, the great discontinuities have turned out to be conceptual barriers rather than natural phenomena. They have been passed by and abandoned rather than broken through in the course of scientific progress. The sign language studies in chimpanzees have neither sought nor discovered a means of breathing humanity into the soul of a beast. They have assumed instead that there is no discontinuity between verbal behavior and the rest of human behavior or between human behavior and the rest of animal behavior—no barrier to be broken, no chasm to be bridged, …
Brain-Based Learning: Implications For The Elementary Classroom, Brenda Van Roekel
Brain-Based Learning: Implications For The Elementary Classroom, Brenda Van Roekel
Master of Education Program Theses
Recent developments in neuroscience have enabled scientists to understand and image brain activity. Brain researchers are now more able than ever before to understand how the brain works, what affects the brain, and what implications these discoveries have for education. Based upon these discoveries new methods of teaching have been devised using the term, brain-based strategies or brain-based learning. This thesis examines some of the brain-based strategies embraced by leaders in this field. It will pay particular attention to the enriched environment, the effect of emotion on learning, and the concept of sensitive or critical periods. It will examine research …
Unusual Foraging Behavior By An Eastern Gray Squirrel (Sciuridae: Sciurus Carolinensis) In An Urban Habitat, Brian S. Shaffer, Barry W. Baker
Unusual Foraging Behavior By An Eastern Gray Squirrel (Sciuridae: Sciurus Carolinensis) In An Urban Habitat, Brian S. Shaffer, Barry W. Baker
Journal of the Minnesota Academy of Science
A unique observation of foraging by an Eastern Gray Squirrel (Sciurus carolinensis) is described. The squirrel was observed consuming insects that had been impacted on automobile radiators.