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Articles 12121 - 12150 of 16973
Full-Text Articles in Entire DC Network
A Non Catalytic Process For The Production Of Nested Bulk Carbon Nanotubes And Nanotube Arrays And Their Electrochemical Behavior, Bill L. Riehl
A Non Catalytic Process For The Production Of Nested Bulk Carbon Nanotubes And Nanotube Arrays And Their Electrochemical Behavior, Bill L. Riehl
Graduate Theses and Dissertations
No abstract provided.
Recovery From Mental Illness: Developing A Measure Of Underlying Constructs, Theresa Marie Hintze
Recovery From Mental Illness: Developing A Measure Of Underlying Constructs, Theresa Marie Hintze
Graduate Theses and Dissertations
No abstract provided.
Why Charlie Darwin Matters More Than Ever: Introducing Students To Evolution And The Nature Of Science, Brian Ellis, Anne H. Weaver
Why Charlie Darwin Matters More Than Ever: Introducing Students To Evolution And The Nature Of Science, Brian Ellis, Anne H. Weaver
Iowa Science Teachers Journal
In celebration of Charles Darwin's 200 Birthday and the 150 anniversary of the publication of his seminal work, On the Origin of Species, this is the first in a series of articles that highlight Darwin's relevance for teachers today and provide lesson plans to bring his work into your classroom. We begin with an introduction to Charles Darwin's life and work through storytelling, a first person monologue as a way to introduce students to several key concepts including the nature of science and a basic understanding of what lead Darwin to the concept of evolution.
Investigating Solutions Through Inquiry, Dana Frits, Chris Siguenza
Investigating Solutions Through Inquiry, Dana Frits, Chris Siguenza
Iowa Science Teachers Journal
In this article we discuss how many activities have valuable ideas, but important modifications must be made to make the activity more effective and mentally engaging. This article discusses the modification of a “cookbook” solubility lab into an inquiry activity, which increases student decisions and the promotion of higher-order thinking skills. We also address the critical role of the teacher in making the lesson effective. This article promotes National Science Education Standards A, B and G and Iowa Teaching Standards 2, 3, 4, and 6.
Learning Theories: Pillars Of Teacher Decision-Making, Jerrid Kruse
Learning Theories: Pillars Of Teacher Decision-Making, Jerrid Kruse
Iowa Science Teachers Journal
In the last issue, I articulated the argument that learning “styles” are not the most valuable way to understand learners. Yet, if learning “styles” do not sufficiently explain learning, how can we better conceptualize learning to inform our instruction?
Stepping Stones: How Variation Leads To Natural Selection, Anne H. Weaver, Brian Ellis
Stepping Stones: How Variation Leads To Natural Selection, Anne H. Weaver, Brian Ellis
Iowa Science Teachers Journal
This is the second of a series of articles in celebration of Charles Darwin's 200 birthday and the 150 anniversary of the publication of his seminal work On the Origin of Species. In the article below we discuss ways to introduce students to variation and develop their understanding of Natural Selection.
Divide & Conquer, Lauren Hackman, Audrey Pohlmann
Divide & Conquer, Lauren Hackman, Audrey Pohlmann
Iowa Science Teachers Journal
This article presents a modified biology lab used to teach the cell cycle. Many traditional versions of the onion root tip lab are delivered in a “cookbook” format to review what students have already learned about the phases of the cell cycle. This modified version illustrates how the onion root tip lab can be much more meaningful when turned into an inquiry-based, exploratory activity to scaffold from a concrete experience to the more abstract process of cell division. This article promotes National Science Education Standards A, C, and G and Iowa Core Curriculum Standards 1, 2, and 5.
Nuts About Inquiry: Peanut Variation And Natural Selection, Lindsay M. C. Kasuga, Christine Evans
Nuts About Inquiry: Peanut Variation And Natural Selection, Lindsay M. C. Kasuga, Christine Evans
Iowa Science Teachers Journal
Despite the numerous advantages of using inquiry, many teachers do not use this method because of issues such as time constraints and increased workload. In addition, content such as evolution is particularly problematic to teach because of the perceived lack of hands-on activities and societal pressures. This inquiry activity is designed to help students understand an important component of evolution by natural selection. Through this activity students better understand natural variation within populations using peanuts. Students are encouraged to make links between population data, population diversity and evolution by using collected data to construct and interpret graphs. This article promotes …
Managing Predators To Protect Endangered Species And Promote Their Successful Reproduction, Richard M. Engeman, Bernice Constantin, Kenneth S. Gruver, Corey Ross
Managing Predators To Protect Endangered Species And Promote Their Successful Reproduction, Richard M. Engeman, Bernice Constantin, Kenneth S. Gruver, Corey Ross
United States Department of Agriculture Wildlife Services: Staff Publications
Predation critically threatens many rare species, with the deleterious impacts of predation losses compounded by habitat loss. Predators of endangered species are frequently invasive species or artificially over-abundant native species. Often, predation is most damaging to a species' ability to reproduce. We use examples from the tropics to the tundra with which we have been involved to demonstrate how predator management can be a highly effective and economically efficient means to protect populations of rare species and enhance their reproduction.
Landscape-Genetic Analysis Of Population Structure In The Texas Gray Fox Oral Rabies Vaccination Zone, Randy Deyoung, Angeline Zamorano, Brian Mesenrink, Tyler A. Campbell, Bruce Leland, Guy Moore, Rodney Honeycutt, J. Jeffrey Root
Landscape-Genetic Analysis Of Population Structure In The Texas Gray Fox Oral Rabies Vaccination Zone, Randy Deyoung, Angeline Zamorano, Brian Mesenrink, Tyler A. Campbell, Bruce Leland, Guy Moore, Rodney Honeycutt, J. Jeffrey Root
United States Department of Agriculture Wildlife Services: Staff Publications
In west-central Texas, USA, abatement efforts for the gray fox (Urocyon cinereoargenteus) rabies epizootic illustrate the difficulties inherent in large-scale management of wildlife disease. The rabies epizootic has been managed through a cooperative oral rabies vaccination program (ORV) since 1996. Millions of edible baits containing a rabies vaccine have been distributed annually in a 16-km to 24-km zone around the perimeter of the epizootic, which encompasses a geographic area >4 x 105 km2. The ORV program successfully halted expansion of the epizootic into metropolitan areas but has not achieved the ultimate goal of eradication. Rabies …
Testudines - Turtles, James Delutes Iii, Richard M. Engeman
Testudines - Turtles, James Delutes Iii, Richard M. Engeman
United States Department of Agriculture Wildlife Services: Staff Publications
Chelydra serpentine serpentine (Common Snapping Turtle). Nesting Behavior and Site Selection. On May 31, 2008, we observed a ca. 36 cm CL Chelydra serpentine serpentine in unexpected nesting circumstances. Observations were made from 0908 to 1027 h on clear day with ambient temp ca 24° C. The nest site near Longmont, Colorado, USA (40.1599528°N, 105.1259861°W; WGS84) was 4.3 m from a seasonal ditch running north-south to connect two lakes, one on either side of a busy road. The intriguing aspect of the nest location was that it was immediately adjacent to a heavily traveled concrete sidewalk that bordered a road …
Escherichia Coli, Salmonella, And Mycobacterium Avium Subsp. Paratuberculosis In Wild European Starlings At A Kansas Cattle Feedlot, Shannon M. Gaukler, George M. Linz, Julie S. Sherwood, Neil W. Dyer, William J. Bleier, Yvonne M. Wannemuehler, Lisa K. Nolan, Catherine M. Logue
Escherichia Coli, Salmonella, And Mycobacterium Avium Subsp. Paratuberculosis In Wild European Starlings At A Kansas Cattle Feedlot, Shannon M. Gaukler, George M. Linz, Julie S. Sherwood, Neil W. Dyer, William J. Bleier, Yvonne M. Wannemuehler, Lisa K. Nolan, Catherine M. Logue
United States Department of Agriculture Wildlife Services: Staff Publications
The prevalence of Escherichia coli, Salmonella spp., and Mycobacterium avium subsp. paratuberculosis isolated from the feces of wild European starlings (Sturnus vulgaris) humanely trapped at a feedlot in central Kansas was assessed. All E. coli and Salmonella isolates recovered were tested for antimicrobial susceptibility using National Antimicrobial Resistance Monitoring System panels and the E. coli isolates were classified as to their content of genes associated with pathogenic E. coli of birds and cattle, including cvaC, iroN2, ompTp, hlyF2, eitC, iss, iutA, ireA, papC, stxI, stxII, sta, K99, F41, and eae. Escherichia coli O157:H7 and Mycobacterium avium …
Avian Use Of Harvested Crop Fields In North Dakota During Spring Migration, Alegra M. Galle, George M. Linz, H. Jeffrey Homan, William J. Bleier
Avian Use Of Harvested Crop Fields In North Dakota During Spring Migration, Alegra M. Galle, George M. Linz, H. Jeffrey Homan, William J. Bleier
United States Department of Agriculture Wildlife Services: Staff Publications
Broad-spectrum herbicide applications and improved harvesting efficiency of crops have reduced the availability of weed seeds and waste grains for game and nongame wildlife. Over the last decade, corn and soybean plantings have steadily increased in the Prairie Pothole Region (PPR) of North Dakota, while sunflower plantings have declined. The PPR is an important corridor for migratory birds, and changes in food availabilities at stopover habitats may affect how food resources are used. In early spring 2003 and 2004, we compared bird use of harvested fields of sunflower, soybeans, small grains, and corn in the PPR of North Dakota. Across …
Predator And Heterospecific Stimuli Alter Behavior In Cattle, Bryan M. Kluever, Larry D. Howery, Stewart W. Breck, David L. Bergman
Predator And Heterospecific Stimuli Alter Behavior In Cattle, Bryan M. Kluever, Larry D. Howery, Stewart W. Breck, David L. Bergman
United States Department of Agriculture Wildlife Services: Staff Publications
Wild and domestic ungulates modify their behavior in the presence of olfactory and visual cues of predators but investigations have not exposed a domestic species to a series of cues representing various predators and other ungulate herbivores.We used wolf (Canis lupus), mountain lion (Puma concolor), and mule deer (Odocoileus hemionus) stimuli (olfactory and visual), and a control (no stimuli) to experimentally test for differences in behavior of cattle (Bos taurus) raised in Arizona. We measured (1) vigilance, (2) foraging rates, (3) giving up density (GUD) of high quality foods and (4) time …
Physiological Stress Response Of Captive White-Tailed Deer To Video Collars, Remington Moll, Joshua J. Millspaugh, Jeff Beringer, Joel Sartwell, Rami Woods, Kurt C. Vercauteren
Physiological Stress Response Of Captive White-Tailed Deer To Video Collars, Remington Moll, Joshua J. Millspaugh, Jeff Beringer, Joel Sartwell, Rami Woods, Kurt C. Vercauteren
United States Department of Agriculture Wildlife Services: Staff Publications
Animal-borne video and environmental data collection systems (AVEDs) are an advanced form of biotelemetry that combines video with other sensors. As a proxy for physiological stress, we assessed fecal glucocorticoid metabolite (FGM) excretion in 7 white-tailed deer (Odocoileus virginianus) fitted with AVED dummy collars; 9 additional deer served as controls. We collected fecal samples over 3 2-week periods: pretreatment, treatment, and post-treatment periods. There were no differences in FGMs across time periods (F2,218 = 1.94, P = 0.147) and no difference between FGMs of control and treatment individuals (F1,14 = 0.72, P = 0.411). Fecal glucocorticoid …
Pathogenesis And Epidemiology Of Brucellosis In Yellowstone Bison: Serologic And Culture Results From Adult Females And Their Progeny, Jack C. Rhyan, Keith Aune, Thomas Roffe, Darla Ewalt, Steve Hennager, Tom Gidlewski, Steve Olsen, Ryan Clarke
Pathogenesis And Epidemiology Of Brucellosis In Yellowstone Bison: Serologic And Culture Results From Adult Females And Their Progeny, Jack C. Rhyan, Keith Aune, Thomas Roffe, Darla Ewalt, Steve Hennager, Tom Gidlewski, Steve Olsen, Ryan Clarke
United States Department of Agriculture Wildlife Services: Staff Publications
Our objective in this prospective study was to determine the natural course of Brucella abortus infection in cohorts of seropositive and seronegative, female bison (Bison bison) and their offspring in Yellowstone National Park (YNP) for 5 yr. We collected specimens from 53 adult females and 25 calves at least once and from 45 adults and 22 calves more than once. Annual seroconversion rates (negative to positive) were relatively high (23% for calves and juvenile bison, 6% in the total sample of adult female bison in our study, and 11% in the adult females that began the study as …
Wildlife Collisions With Aircraft: A Missing Component Of Land-Use Planning For Airports, Bradley F. Blackwell, Travis L. Devault, Esteban Fernández-Juricic, Richard A. Dolbeer
Wildlife Collisions With Aircraft: A Missing Component Of Land-Use Planning For Airports, Bradley F. Blackwell, Travis L. Devault, Esteban Fernández-Juricic, Richard A. Dolbeer
United States Department of Agriculture Wildlife Services: Staff Publications
Projecting risks posed to aviation safety by wildlife populations is often overlooked in airport land-use planning. However, the growing dependency on civil aviation for global commerce can require increases in capacity at airports which affect land use, wildlife populations, and perspectives on aviation safety. Our objectives were to (1) review legislation that affects airports and surrounding communities relative to managing and reducing wildlife hazards to aviation; (2) identify information gaps and future research needs relative to regulated land uses on and near airports, and the effects on wildlife populations; and (3) demonstrate how information regarding wildlife responses to land-use practices …
Assessing Allowable Take Of Migratory Birds, Michael Runge, John Sauer, Michael L. Avery, Bradley F. Blackwell, Mark Koneff
Assessing Allowable Take Of Migratory Birds, Michael Runge, John Sauer, Michael L. Avery, Bradley F. Blackwell, Mark Koneff
United States Department of Agriculture Wildlife Services: Staff Publications
Legal removal of migratory birds from the wild occurs for several reasons, including subsistence, sport harvest, damage control, and the pet trade. We argue that harvest theory provides the basis for assessing the impact of authorized take, advance a simplified rendering of harvest theory known as potential biological removal as a useful starting point for assessing take, and demonstrate this approach with a case study of depredation control of black vultures (Coragyps atratus) in Virginia, USA. Based on data from the North American Breeding Bird Survey and other sources, we estimated that the black vulture population in Virginia …
Ecological Correlates Of Risk And Incidence Of West Nile Virus In The United States, Brian F. Allan, R. Brian Langerhans, Wade A. Ryberg, William J. Landesman, Nicholas W. Griffin, Rachael S. Katz, Brad J. Oberle, Michele R. Schutzenhofer, Kristina N. Smyth, Annabelle De St. Maurice, Larry Clark, Kevin R. Crooks, Daniel E. Hernandez, Robert G. Mclean, Richard S. Ostfeld, Jonathan M. Chase
Ecological Correlates Of Risk And Incidence Of West Nile Virus In The United States, Brian F. Allan, R. Brian Langerhans, Wade A. Ryberg, William J. Landesman, Nicholas W. Griffin, Rachael S. Katz, Brad J. Oberle, Michele R. Schutzenhofer, Kristina N. Smyth, Annabelle De St. Maurice, Larry Clark, Kevin R. Crooks, Daniel E. Hernandez, Robert G. Mclean, Richard S. Ostfeld, Jonathan M. Chase
United States Department of Agriculture Wildlife Services: Staff Publications
West Nile virus, which was recently introduced to North America, is a mosquito-borne pathogen that infects a wide range of vertebrate hosts, including humans. Several species of birds appear to be the primary reservoir hosts, whereas other bird species, as well as other vertebrate species, can be infected but are less competent reservoirs. One hypothesis regarding the transmission dynamics of West Nile virus suggests that high bird diversity reduces West Nile virus transmission because mosquito blood-meals are distributed across a wide range of bird species, many of which have low reservoir competence. One mechanism by which this hypothesis can operate …
Comparison Of Injuries To Coyote From 3 Types Of Cable Foot-Restraints, Patrick Darrow, Ramona Skirpstunas, S. Wade Carlson, John Shivik
Comparison Of Injuries To Coyote From 3 Types Of Cable Foot-Restraints, Patrick Darrow, Ramona Skirpstunas, S. Wade Carlson, John Shivik
United States Department of Agriculture Wildlife Services: Staff Publications
We compared injury rates among captured coyotes (Canis latrans) to determine if modifications to cable foot-restraints would decrease resulting injuries. Mean International Standardization Organization’s injury scores of coyotes caught in 3 types of cable foot-restraints were 22.2, 37.9, and 60.4 (F2,41 = 4.63, P = 0.015) for a chain-loop, standard cable, and sleeved cable, respectively. These results may be important for trappers and researchers to consider when using a cable foot-restraint device to capture wildlife.
Strawberry-Flavored Baits For Pharmaceutical Delivery To Feral Swine, Tyler A. Campbell, David B. Long
Strawberry-Flavored Baits For Pharmaceutical Delivery To Feral Swine, Tyler A. Campbell, David B. Long
United States Department of Agriculture Wildlife Services: Staff Publications
More effective methods to control feral swine (Sus scrofa) damage are needed. We evaluated 8 oral delivery systems designed to deliver pharmaceuticals to feral swine on 2 properties in southern Texas, USA. We used modified PIGOUT feral pig bait (Animal Control Technologies Australia P/L, Somerton, Victoria, Australia) throughout our trials to compare species-specific visitation and removal rates. Given our consistent finding of high non-target removal of baits intended for feral swine, we question whether a swine-specific oral delivery system exists for this region.
The Effects Of Aerosolized Brevetoxin Exposure On The Human Respiratory System, Katie M. Spaulding
The Effects Of Aerosolized Brevetoxin Exposure On The Human Respiratory System, Katie M. Spaulding
International Journal of Global Health and Health Disparities
While much information has been collected about the effects of brevetoxin ingestion in contaminated seafood, there has been very little research conducted and little is known about the effects of these toxins when inhaled in aerosols (Backer et al., 2003). The effects of brevetoxins are of great public health concern because not only are harmful algal blooms increasing in frequency and duration of occurrence, they are also expanding their area of distribution (Sellner et al., 2003; Kirkpatrick, 2004). Since a significant proportion of the world's population live within 75 miles of an ocean coast and this density of human coastal …
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.
"False But Highly Persuasive": How Wrong Were The Probability Estimates In Mcdaniel V. Brown?, David H. Kaye
"False But Highly Persuasive": How Wrong Were The Probability Estimates In Mcdaniel V. Brown?, David H. Kaye
Michigan Law Review First Impressions
In McDaniel v. Brown, the Supreme Court will review the use of DNA evidence in a 1994 trial for sexual assault and attempted murder. The Court granted certiorari to consider two procedural issues—the standard of federal postconviction review of a state jury verdict for sufficiency of the evidence, and the district court's decision to allow the prisoner to supplement the record of trials, appeals, and state postconviction proceedings with a geneticist's letter twelve years after the trial. The letter from Laurence Mueller, a professor at the University of California at Irvine, identified two obvious mistakes in the state's expert testimony. …
The Gay Agenda, Libby Adler
The Gay Agenda, Libby Adler
Michigan Journal of Gender & Law
This Article is designed to illuminate options that the author believes have been difficult for advocates of gay rights to imagine due to an incessant culture war and the hard work of anti-gay forces that have kept pro-gay advocates under persistent fire. The culture war, this paper argues, while a fundraising boon and a media draw, compels a particular type of participation and a particular reform agenda, eclipsing reform possibilities that might be preferable in the long run.
Does Misery Love Company - Evidence From Pharmaceutical Markets Before And After The Orphan Drug Act, Frank R. Lichtenberg, Joel Waldfogel
Does Misery Love Company - Evidence From Pharmaceutical Markets Before And After The Orphan Drug Act, Frank R. Lichtenberg, Joel Waldfogel
Michigan Telecommunications & Technology Law Review
The possibility that small populations would see few medications developed for their conditions has [...] led the U.S. Congress to pass the 1983 Orphan Drug Act ("ODA"), giving firms special incentives to develop drugs for diseases afflicting fewer than 200,000 persons per year.[...][U]under the Act, drug makers receive seven years of exclusive marketing upon FDA approval of newly-developed drugs qualifying as "orphan drugs"--i.e., drugs for disorders affecting fewer than 200,000 persons.[...]Together, [the] provisions (a) increase the effective market size; and (b) reduce fixed (sunk) costs. In doing so, the Act provides a natural experiment for measuring the impact of increased …
Platitudes About Product Stewardship In Torts: Continuing Drug Research And Education, Lars Noah
Platitudes About Product Stewardship In Torts: Continuing Drug Research And Education, Lars Noah
Michigan Telecommunications & Technology Law Review
This Article focuses on one emerging aspect of tort litigation against pharmaceutical manufacturers that, if it gained traction, portends a dramatic (and potentially counterproductive) expansion in the prescription drug industry's exposure to liability. The traditional theories of products liability--mismanufacture, defective design, and inadequate warnings--no longer exhaust the potential obligations of sellers. In addition to increasingly popular claims of misrepresentation and negligent marketing, which seem more like extensions of the three defect categories than entirely novel theories, a growing chorus of commentators would impose on pharmaceutical manufacturers a broader duty to test and educate (aspects of what they call an obligation …
Pdufa And Initial U.S. Drug Launches, Mary K. Olson
Pdufa And Initial U.S. Drug Launches, Mary K. Olson
Michigan Telecommunications & Technology Law Review
In the 1970s and 1980s, many pharmaceutical firms launched new drugs abroad prior to gaining U.S. approval. Consequently, U.S. patients often faced delays in accessing important new medicines. High regulatory barriers to entry, such as a stringent regulation and a lengthy drug review process, contributed to this problem. This Article examines the impact of the Prescription Drug User Fee Act (PDUFA), and subsequent increases in the speed of FDA review, on the likelihood of initial U.S. drug launches. These factors are hypothesized to lower regulatory barriers to entry in the U.S. pharmaceutical market. The results show that increased drug review …
Why Fdca Section 505(U) Should Not Concern Us Greatly, Kyle Faget
Why Fdca Section 505(U) Should Not Concern Us Greatly, Kyle Faget
Michigan Telecommunications & Technology Law Review
Among the many amendments found in the Food and Drug Administration Amendment Act of 2007 (FDAAA) is a provision at the end of the act, Section 505(u), which grants chiral switches five years of market exclusivity under certain circumstances. Prior to Congressional enactment of the FDAAA, the Food and Drug Administration (FDA) refused to award new chemical entity (NCE) status to enantiomers of previously approved racemic mixtures. The FDA defines a new chemical entity ("NCE") as a drug that contains no active moiety that has been approved by the FDA in any other application submitted under Section 505(b) of the …
When And How To Defer To The Fda: Learning From Michigan's Regulatory Compliance Defense, Jason C. Miller
When And How To Defer To The Fda: Learning From Michigan's Regulatory Compliance Defense, Jason C. Miller
Michigan Telecommunications & Technology Law Review
Michigan's regulatory compliance defense properly recognizes that an FDA-approved drug carrying an FDA-approved label should not be considered defective. However, the statute's absolute immunity provides no compensation for injured parties in any circumstance, including situations where the FDA process has failed. Nevertheless, it is possible to treat the FDA's approval as significant without eliminating the possibility of all state actions against drug makers by providing a litigation back-up through state attorneys general ("AGs"). This Note examines the question of FDA approval in state tort actions in Part I, discusses Michigan's answer to that question in Part II, and offers a …