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Articles 22771 - 22800 of 24567
Full-Text Articles in Social and Behavioral Sciences
Camp Peregrine Research: An Investigation Of The Development Of Environmental Empathy, Diana Sweet Wilson
Camp Peregrine Research: An Investigation Of The Development Of Environmental Empathy, Diana Sweet Wilson
Research in Outdoor Education
Our research goal at Mohonk Preserve' s Camp Peregrine during the past five years has been to discover better ways to give children opportunity to experience the environment that results in a deep empathy for the organisms and their physical habitats. Empathy for non-human characters involves the focusing of attention on the other and the assumption of the role of the other, as well as cognitive activities that lead to understanding of the other's situati9n (Hoffman, 1993). We link adventure, scientific inquiry, and storytelling to accomplish these goals.
The Planet, 1994, Winter, Derek Martin, Huxley College Of The Environment, Western Washington University
The Planet, 1994, Winter, Derek Martin, Huxley College Of The Environment, Western Washington University
The Planet
No abstract provided.
Relation Between S2 And Later Generation Testcrosses Of Two Corn Populations, S. M. Lile, A. R. Hallauer
Relation Between S2 And Later Generation Testcrosses Of Two Corn Populations, S. M. Lile, A. R. Hallauer
Journal of the Iowa Academy of Science: JIAS
Determination of the relative combining abilities of corn (Zea mays L.) inbred lines is an important feature of applied corn breeding programs. Combining ability is measured by the relative performance of a line in testcrosses to one or more testers. Inbred lines from BS13(S2)Cl and BSCB1(R)C7 corn populations were evaluated at the S2 and later generations of inbreeding. Intense selection was practiced among and within lines during inbreeding to develop the S5-equivalent and S8 generation lines. The objective of this study was to determine if the combining ability of lines in early generations (S2) …
Nomenclatural Changes For Some Diatoms Found In Iowa, David B. Czarnecki
Nomenclatural Changes For Some Diatoms Found In Iowa, David B. Czarnecki
Journal of the Iowa Academy of Science: JIAS
Nomenclatural revisions for four diatom taxa found in Iowa, two of which are presently maintained in the Loras College Freshwater Diatom Culture Collection (FDCC), are necessary because of systematic interpretations of the Division Bacillariophyta. Achnanthidium hauckianum (Grun.) Czarnecki comb. nov. was originally assigned to the genus Achnanthes Bory. Three taxa were previously assigned to the morphologically diverse genus Navicula Bory. These are Cavinula weinzierlii (Schimanski) Czarnecki comb. nov., Craticula cuspidata var. major [(Meist.) Czarnecki comb. nov. and] Craticula halophila var. subcapitata (0str.) Czarnecki comb. nov.
Further Evidence Of Lead Contamination Of Omaha Skeletons, A. Mohamad Ghazi, Karl J. Reinhard, Mary Anne Holmes, Eric M. Durrance
Further Evidence Of Lead Contamination Of Omaha Skeletons, A. Mohamad Ghazi, Karl J. Reinhard, Mary Anne Holmes, Eric M. Durrance
Department of Earth and Atmospheric Sciences: Faculty Publications
A previous analysis of Omaha skeletons dating between A.D. 1780 and 1820 revealed the presence of lead in all skeletons with high concentrations in children and adult males (Reinhard and Ghazi [1992] Am. J. Phys. Anthropol. 89: 183-195). Two likely explanations for the high lead levels were presented: 1) metabolic absorption of lead and 2) diagenetic uptake of lead by the bones from postmortem application of pigments to the corpse. Two types of lead were available to the Omaha tribe: 1) Mississippi Valley type, and 2) non-Mississippi Valley type. It has been suggested that red-lead pigment mixed with mercury sulfide …
Snake: The Plain And Its People, E. B. Bentley, Bill Bonnichsen, John C. Freemuth, Bill Hackett, Glenn Oakley, F. Ross Peterson, Mark G. Plew, Todd Shallat, Steve Stuebner
Snake: The Plain And Its People, E. B. Bentley, Bill Bonnichsen, John C. Freemuth, Bill Hackett, Glenn Oakley, F. Ross Peterson, Mark G. Plew, Todd Shallat, Steve Stuebner
Faculty & Staff Authored Books
Idaho's longest river curves west through desert landscapes, cutting deep through ancient formations, flowing through space and time. How have humans dealt with the desert? How have we been shaped by the land? SNAKE: The Plain and Its People explores the physical and ecological roots of Idaho civilization through science, social science, photography and art.
A Case Study Of Health Risk Communication: What The Public Wants And What It Gets, Jeannette M. Trauth
A Case Study Of Health Risk Communication: What The Public Wants And What It Gets, Jeannette M. Trauth
RISK: Health, Safety & Environment (1990-2002)
Dr. Trauth presents a content analysis of 40 years of coverage of a major local source of air pollution by a Pittsburgh newspaper. She also summarizes the results of a survey conducted to determine the extent to which citizens of most likely affected communities, e.g., understand health risks and desire further information.
Table Of Contents Volume Five, Number One, Winter 1994, Risk Editorial Board
Table Of Contents Volume Five, Number One, Winter 1994, Risk Editorial Board
RISK: Health, Safety & Environment (1990-2002)
Table of contents for the journal RISK: Health, Safety & Environment (ISSN: 1073-8673)
The Iowa Academy Of Science Parish Farm: 1986-1992, David L. Dozark
The Iowa Academy Of Science Parish Farm: 1986-1992, David L. Dozark
Journal of the Iowa Academy of Science: JIAS
This article focuses on the Iowa Academy of Science Parish Farm and the progress made in the last seven years towards the goals set forth in the Model Farm Concept which was adopted by the Academy in 1970. Highlights of this article are a summary of the income and expenses associated with the farm's highly profitable crop production, the ground-water monitoring project being conducted by the Geological Survey Bureau, the woodlot rejuvenation project, soil and wildlife conservation improvements, and the prairie forbes exhibit area. The farm continues to serve as a primary source of income for the Academy and a …
Post-Natal Survival Of Raccoons In Relation To Female Age And Denning Behavior, Jonathan J. Judson, William R. Clark, Ronald D. Andrews
Post-Natal Survival Of Raccoons In Relation To Female Age And Denning Behavior, Jonathan J. Judson, William R. Clark, Ronald D. Andrews
Journal of the Iowa Academy of Science: JIAS
We measured post-natal survival of radio-collared raccoons 1-5 months old in southwest Iowa, 1988-1989. We compared survival of young nurtured by yearling and adult females and related den site selection to survival functions using proportional hazards models. Adult females used upland and farmstead habitats note frequently than yearlings, whereas yearling females used lowland habitats note frequently. Tree cavities and beds on the ground were used most frequently. Adult females denned in buildings 13% of the time and in holes in the ground 9.5% of the time, whereas yearlings frequently tested with litters in beds on the ground (31%). Microhab1tat characteristics …
Effects Of Competition And Predation On Prothonotary Warblers And House Wrens Nesting In Eastern Iowa, Timothy Brush
Effects Of Competition And Predation On Prothonotary Warblers And House Wrens Nesting In Eastern Iowa, Timothy Brush
Journal of the Iowa Academy of Science: JIAS
In a fragmented midwestern floodplain forest, a small Prothonotary Warbler (Protonotaria citrea) population experienced high competition with House Wrens (Troglodytes aedon) and mammalian nest predation in 1988-89. Despite the provision of 3 types of nest boxes and higher water levels, Prothonotary Warblers did not nest successfully and decreased in the fragmented forest in 1990-91. House Wrens used >90% of the nest boxes in both years. Wren territories doubled within the nestbox area, while remaining constant on an unmanipulated area. In contrast, a larger warbler population had high nesting success during 1990-91 in a relatively unfragmented, wetter forest tract. Such forests, …
Journal Of The Iowa Academy Of Science Submission Form And Instruction Sheet
Journal Of The Iowa Academy Of Science Submission Form And Instruction Sheet
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
Research Papers By 1992 And 1993 Interns In The Program For Women In Science And Engineering At Iowa State University, Mary Ann Evans, Krishna S. Athreya
Research Papers By 1992 And 1993 Interns In The Program For Women In Science And Engineering At Iowa State University, Mary Ann Evans, Krishna S. Athreya
Journal of the Iowa Academy of Science: JIAS
The papers in this volume offer a sampling of the outstanding work of high school and undergraduate interns who participated in the 1992 and 1993 Program for Women in Science and Engineering (PWSE) summer internship programs. From synthesis of materials to developing effective methods of hazardous waste disposal, from nondestructive structural studies at the macroscopic level to microstructural analyses of materials, from testing precision of sensors used as aids in agriculture to isolating effects of specific parameters on plant growth, to name a few, these papers span a wide range of scientific methods and disciplines. They serve as testimony to …
Crystal Structure Of An Iodine Phenazine Complex: C12h9n2 + · I3-. C12h8n2 · 1/6i2, Rebecca A. Brandenburg, Sharon L. Ringrose, Robert A. Jacobson
Crystal Structure Of An Iodine Phenazine Complex: C12h9n2 + · I3-. C12h8n2 · 1/6i2, Rebecca A. Brandenburg, Sharon L. Ringrose, Robert A. Jacobson
Journal of the Iowa Academy of Science: JIAS
A structural study of the polyiodide containing species C12H9N2+ I3- C12H8N2 · 1/6I2 was carried out by single crystal X-ray diffraction techniques. The material crystallizes in the monoclinic space group C2/m with a= 16.561(5), b = 8.372(2), c = 9.908(5) A and β = 111.24°. There are two molecules per cell. Dara were collected using Mo Kἀ radiation and refinement converged to R = 0.027 based on the 1996 unique reflections with |Fo|≥3δ(Fo). The iodine atoms were found coexist in two …
Removal Of Magnetic Impurities From Strontium Copper Oxychloride, Colleen B. Eads, Carol J. Kosmicke, Lance L. Miller
Removal Of Magnetic Impurities From Strontium Copper Oxychloride, Colleen B. Eads, Carol J. Kosmicke, Lance L. Miller
Journal of the Iowa Academy of Science: JIAS
Analyses of a copper-deficient series of Strontium Copper Oxychloride polycrystalline samples are reported. Magnetic susceptibility, X-ray powder diffraction, and differential thermal analyses show a small Curie-type magnetic signal correlates with =0.6% (excess) copper ions in the nominally stoichiometric material. The analyses also imply that the extra magnetic signal is from an impurity phase, possibly related to Strontium Copper Oxide. The concentration of the impurity phase can be controlled by varying the copper stoichiometry.
Testing The Accuracy And Precision Of Wetness Sensors In A Tomato Field And On Turfgrass, Kara J. Potratz, Mark L. Gleason, Melanie L. Hockmuth, Sharon K. Parker, Glenn A. Pearston
Testing The Accuracy And Precision Of Wetness Sensors In A Tomato Field And On Turfgrass, Kara J. Potratz, Mark L. Gleason, Melanie L. Hockmuth, Sharon K. Parker, Glenn A. Pearston
Journal of the Iowa Academy of Science: JIAS
Measurements of dew-period duration by painted, flat-plate, electronic wetness sensors at the top of the plant canopy in a tomato field and on adjacent turfgrass were compared with visual observations. The response range of sensors during the onset of dew sometimes exceeded 5 hr. but was less than 1 hr. on other nights. Sensors in the tomato field indicated dew formation occurred as much as 2 hr. earlier or later than dew became visible on adjacent tomato leaflets at the top of the crop canopy. A calibration threshold for sensors derived from a drying curve resulted in the underestimation of …
Soybean Residual Effects On A Subsequent Maize Crop, E. S. Escuro, D. N. Sundberg, R. M. Shibles
Soybean Residual Effects On A Subsequent Maize Crop, E. S. Escuro, D. N. Sundberg, R. M. Shibles
Journal of the Iowa Academy of Science: JIAS
Maize (Zea mays 1.) grown after soybean (Glycine max 1. Merr.) consistently performs better than maize that follows itself (second year maize), irrespective of nitrogen fertilization. In previous studies of the soybean-maize rotation, there never has been an evaluation of the potentially different effects of soybean genotypes on following maize. A two-year, soybean maize rotation was initiated in Ames at 1988 with the first year planted to various soybean genotypes, a maize hybrid, and oat (Avena sativa 1.). These were followed in the second year by a single maize hybrid with 0, 80, 160, and 240 kg/ha N fertilization levels. …
Annual Report Of The Iowa Academy Of Science, 1993-94, Paul E. Rider
Annual Report Of The Iowa Academy Of Science, 1993-94, Paul E. Rider
Journal of the Iowa Academy of Science: JIAS
Since 1976, annual reports have served as a continuing record of the activities of the Iowa Academy of Science and an archive for its history. These augment the 100 year IAS history written in the centennial year of 1975.
This report covers the period from July 1, 1993 to June 30, 1994. It is based on the official records of the Academy (committee reports, Board minutes, correspondence) as well as the recollections, impressions and thoughts of the author.
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.
Cover - Table Of Contents
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
Cover - Table Of Contents
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
Use Of Ion Exchange Membranes For Selective Recovery Of Aspergillus Awamori Glucoamylase And Phage T4 Lysozyme, Deborah K. Stafslein, Jeff M. Hunter, Craig E. Forney
Use Of Ion Exchange Membranes For Selective Recovery Of Aspergillus Awamori Glucoamylase And Phage T4 Lysozyme, Deborah K. Stafslein, Jeff M. Hunter, Craig E. Forney
Journal of the Iowa Academy of Science: JIAS
Our research examined whether enhanced separation and purification of mutant enzymes could be obtained on ion-exchange membranes. Solutions of three mutants of Aspergillus awamori glucoamylase were passed through an anionic exchange membrane, as well as one mutant of T4 lysozyme through a cationic exchange membrane. The mutant enzymes were modified by adding "charged fusions'', polypeptides of either aspartic acid residues to increase the overall negative charge of the enzyme or arginine residues to increase the overall positive charge. The effect of the mutations on the purification of glucoamylase from a "modified" fermentation broth were examined at two different elution pHs, …
Selective Recovery Of Β-Galactosidase With Charged Fusion Tails Using Ion-Exchange Membranes, Erika A. Thiem, Meng H. Heng
Selective Recovery Of Β-Galactosidase With Charged Fusion Tails Using Ion-Exchange Membranes, Erika A. Thiem, Meng H. Heng
Journal of the Iowa Academy of Science: JIAS
We explored the feasibility of attaching charged tails to a target protein, in this case β-galactosidase, for selective recovery. In this process, an ion-exchange membrane was used for selective binding and release of β-galactosidase with the attached purification fusions. Strength of binding and purity of eluate increased with increasing tail length. In addition, activity yield was improved with the implementation of an intermediate partial elution recycle procedure.
Parallel Algorithms For Solving Partial Differential Equations, Stacy Pschenica
Parallel Algorithms For Solving Partial Differential Equations, Stacy Pschenica
Journal of the Iowa Academy of Science: JIAS
This paper describes the use of a parallel computer system in applying a finite difference method to solve various types of partial differential equations. A sequential implementation of this method was made parallel by essentially spatially decomposing the problem domain into pieces that could be separately analyzed and assigning each piece to a processor in a large, multi-processor system. Although this approach is attractive in theory, it suffers in practice because of inter-processor interactions. Thus, particular emphasis was placed on developing efficient methods for the sharing of information among the processors.
Initially, a simple two-dimensional board game, life, was implemented …
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.
Evaluation Of Implanted Radio Transmitters In Pheasant Chicks, Dean E. Ewing, William R. Clark, Paul A. Vohls
Evaluation Of Implanted Radio Transmitters In Pheasant Chicks, Dean E. Ewing, William R. Clark, Paul A. Vohls
Journal of the Iowa Academy of Science: JIAS
We studied game-farm pheasant (Phasianus colchicus Linneaus) chicks implanted with miniature transmitters to determine if surgery and implantation affected growth, behavior, or survival. Transmitters (weighing 1.2 g) were implanted subcutaneously in the interscapular region in day-old chicks. In Experiment 1, biological effects on chicks with transmitters implanted were compared with data from a control group. In Experiment 2, the effects of anesthesia only, anesthesia with an implanted transmitter, and implanted transmitter only were compared with a control. We measured responses of weight gain, survival, and pecking behavior in each experiment. In Experiment 1, we found no significant differences in weight …