Absorption and Screening in Phycomyces

In vivo absorption measurements were made through the photosensitive zones of Phycomyces sporangiophores and absorption spectra are presented for various growth media and for wavelengths between 400 and 580 mµ. As in mycelia, ß-carotene was the major pigment ordinarily found. The addition of diphenylamine to the growth media caused a decrease in ß-carotene and an increase in certain other carotenoids. Growth in the dark substantially reduced the amount of ß-carotene in the photosensitive zone; however, growth on a lactate medium failed to suppress ß-carotene in the growing zone although the mycelia appeared almost colorless. Also when diphenylamine was added to the medium the absorption in the growing zone at 460 mµ was not diminished although the colored carotenoids in the bulk of the sporangiophore were drastically reduced. Absorption which is characteristic of the action spectra was not found. Sporangiophores immersed in fluids with a critical refractive index show neither positive nor negative tropism. Measurements were made of the critical refractive indices for light at 495 and 510 mµ. The critical indices differed only slightly. Assuming primary photoreceptors at the cell wall, the change in screening due to absorption appears too large to be counterbalanced solely by a simple effect of the focusing change. The possibility is therefore advanced that the receptors are internal to most of the cytoplasm; i.e., near the vacuole

SOME EFFECTS OF CRUDE AND NO 2 FUEL OIL ON THE CHROMOSOMES OF THE SMOOTH FLOUNDER, LIOPSETTA PUTNAMI (GILL)

An analysis was conducted on the genotoxic effects of water soluble fractions (WSF) of Venezuelan crude and No. 2 fuel oil on the chromosomes of smooth flounder (Liposetta putnami) gill cells. Both static and flow-through in-lab exposures were used to determine the effects of long-term low-level WSF exposure (7%, 4%, and 2% WSF) on adult L. putnami. The long-term exposures were of 96 and 99 days for the No. 2 fuel and crude static systems respectively, and 137 days for the flow-through systems. Chromosome aberrations scored include: fragments, chromatid deletions, complex rearrangements, rings, and translocations. Chromosome count variations were also analyzed. Water samples were examined for hydrocarbon content with fluorescent spectroscopy. Of the long-term exposures, significant increases in chromosome breakage occurred in the No. 2 fuel static experiment. The crude static and flow-through exposures resulted in a less dramatic, but significant increase in chromosome fragments. Additionally, a short-term exposure to 7% WSFs of both oil types proved significantly (P (LESSTHEQ) 0.01) more toxic (via larval mortality) than 0, 2, and 4% WSF to L. putnami sac fry when exposed for 10 days. It is hypothesized that the smooth flounder possesses an active mixed function oxidase enzyme system which may transform certain hydrocarbons into active mutagenic forms, and also may depurate hydrocarbons. The studies reported here are the first known to directly address the impacts of WSFs of oil upon the chromosome morphology of a marine species

Valuing Access to U.S. Public Lands: A Unique Pricing Experiment

We report the findings of a unique nation-wide experiment to price access to U.S. public lands. In 2004, the U.S. Federal Lands Recreation Enhancement Act mandated the creation of a new annual pass to cover all federal recreation sites that charge an entrance or access fee. Our task was to assist federal policymakers in determining an appropriate price for this new pass. Toward that end, we administered a national telephone survey to over 3,700 households and used contingent valuation to estimate households’ willingness to pay (WTP) for the new pass at different prices. Our innovative experimental design allows us to estimate three distinct components of hypothetical bias in order to calibrate our WTP estimates against actual purchasing decisions. In a sample of the general U.S. population – most of whom have little experience with similar federal passes – respondents tend to greatly exaggerate their WTP for the pass when contrasted with previous pass sales. A sample of recent pass purchasers, however, exhibits little bias, confirming other recent research showing that market experience can mitigate hypothetical bias. Calibrated for bias, our results indicate that the $80 pass price ultimately adopted by policymakers implies an increase of nearly 2.5$65, but a 4.5% loss in potential revenue absent any such pass.

Inclusive Learning Initiative Library Training Programme

NUI Maynooth Teaching and Learning Showcase 2012/1

The Geography of the Crown: Reflections on Mikisew Cree and Williams Lake

In this article, we argue for the importance of the geographic underpinnings of the concepts of “the Crown”, the “honour of the Crown”, “fiduciary duty”, and the “duty to consult” in cases concerning Aboriginal title and rights in Canada. Recent decisions, including Williams Lake (2018) and Mikisew Cree (2018), while further developing and refining these concepts, continue to skirt around the fundamentally geographic issue of territorial sovereignty. We argue that both political and legal discussions fail to recognize fully how the honour of the Crown, fiduciary duty, and the duty to consult arise from this geographical basis, rather than from a legal or abstracted definition of the Crown. More than a bounded space or a specific site, territory is a strategic process of settler-colonial statecraft, in which the law is a constitutive instrument in the unmaking and remaking of territory. The concepts of the Crown, its honour and its duties are not exempt from this process

Concurrent Session, Prescription for Success: Using ePortfolio to Job Prep Non-traditional Students

This session will describe the Prescription for Success program; a model to integrate three high impact strategies. Using ePortfolio, the program encompasses Writing across the Curriculum and Service Learning in a community college. The overall goal is to improve students\u27 information literacy, technology and writing skills in a pre-licensure associate degree program. Focused on making student learning visible, the program has developed a multilayered, multipronged approach to enhance student learning and prepare them to compete in the 21st century job market. This presentation will provide an overview of the integrative curriculum with both student and faculty workshops

Valuing Access to our Public Lands: A Unique Public Good Pricing Experiment

We report the findings of a unique nation-wide experiment to price access to our public lands. In 2004, the U.S. Federal Lands Recreation Enhancement Act mandated the creation of a new annual pass to cover all federal recreation sites that charge an entrance or access fee. Our task was to assist federal policymakers in determining an appropriate price for this new pass. Toward that end, we administered a contingent valuation phone survey to over 3700 households to estimate households willingness to pay (WTP) for the new pass at a variety of different prices. Our innovative experimental design allows us to estimate the degree of hypothetical bias in the sample and calibrate our WTP estimates to reflect actual purchasing decisions. In a sample of the general U.S. population most of whom have little experience with similar federal passes respondents tend to greatly exaggerate their WTP for the pass when contrasted with previous pass sales. A sample of recent pass purchasers, however, exhibits little bias. This confirms recent research showing that market experience can be an effective means to mitigate hypothetical bias.Land Economics/Use,

Creating Technology-enhanced Practice: A University-Home Care-Corporate Alliance

Insuring full benefit of consumer health informatics innovations requires integrating the technology into nursing practice, yet many valuable innovations are developed in research projects and never reach full integration. To avoid this outcome, a team of researchers partnered with a home care agency’s staff and patients and their corporate parent’s Information Systems and Research group to create a Technology-Enhanced Practice (TEP) designed to enhance care of home bound patients and their family care givers. The technology core of TEP, the HeartCare2 web site, was built in a collaborative process and deployed within the existing patient portal of the clinical partner. This paper describes the innovation and the experience of bringing it into full operation

Flooding of December 29, 1984 Through January 2, 1985, in Northern New York State, With Flood Profiles of the Black and Salmon Rivers

Precipitation, snowmelt, and resultant flooding throughout northern New York from December 28 through January 2, 1985, were investigated through a detailed analysis of 56 precipitation stations, 101 stage and/or discharge gaging stations, and 9 miscellaneous measurement sites. Flood damage to property and roads and bridges exceeded $5 million. Lewis and Oswego Counties were declared Federal disaster areas, primarily a result of flooding of the Black River and Salmon River. Storm-precipitation and runoff maps show the storms \u27 greatest intensity to have been over the Tug Hill and southwest Adirondack areas. Total rainfall from December 28 through January 2 was 6.90 inches at Stillwater Reservoir but only 0.69 inches at Lake Placid. New peak discharges of record occurred at 17 gaging stations throughout northern New York, and the maximum discharge at 17 sites had recurrence intervals equal to or greater than 100 years. Computed inflows to 11 major lakes and reservoirs in northern New York indicate that significant volumes of water (as much as 5 inches of storm runoff at Stillwater Reservoir) were stored during the storm-runoff period. Maximum 1-day flood volumes at two gaging stations on the Black River had recurrence intervals greater than 100 years. To help evaluate the extent of flooding, 67 floodmarks were obtained along a 94-mile reach of the Black River from Dexter to Forestport, and several floodmarks were surveyed within major communities along the Salmon River. The floodmarks were obtained primarily near major bridges and dams along these rivers. (Author \u27s abstract