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Articles 1231 - 1260 of 1662

Full-Text Articles in Anthropology

Editorial Board & Iowa Academy Of Science Officers And Directors Jan 1994

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

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The Iowa Academy Of Science Parish Farm: 1986-1992, David L. Dozark Jan 1994

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 …

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Analysis Of An Iowa Aridity Index In Relationship To Climate And Crop Yield, Soumare Harouna, R. E. Carlson Jan 1994

Analysis Of An Iowa Aridity Index In Relationship To Climate And Crop Yield, Soumare Harouna, R. E. Carlson

Journal of the Iowa Academy of Science: JIAS

An aridity index and its components, temperature and precipitation, for the period from 1900 through April 1993 were defined and characterized. This index describes the anomalous behavior of both temperature and precipitation over time. Our intent was to examine climate variability in Iowa. Moving mean and standard deviations over various lengths of time were calculated from three time series. We found that these indices fluctuate considerably from year to year and from month to month. The lowest aridity index values occurred in the recent summer of 1992, and the highest occurred during the very drought-prone 1930s. The 12-month moving mean …

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Relation Between S2 And Later Generation Testcrosses Of Two Corn Populations, S. M. Lile, A. R. Hallauer Jan 1994

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) …

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Journal Of The Iowa Academy Of Science Submission Form And Instruction Sheet Jan 1994

Journal Of The Iowa Academy Of Science Submission Form And Instruction Sheet

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

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Crystal Structure Of An Iodine Phenazine Complex: C12h9n2 + · I3-. C12h8n2 · 1/6i2, Rebecca A. Brandenburg, Sharon L. Ringrose, Robert A. Jacobson Jan 1994

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 …

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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 Jan 1994

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 …

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Back Cover Jan 1994

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

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Cover - Table Of Contents Jan 1994

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

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Note To Members And Subscribers, Paul E. Rider Jan 1994

Note To Members And Subscribers, Paul E. Rider

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

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Evaluation Of Implanted Radio Transmitters In Pheasant Chicks, Dean E. Ewing, William R. Clark, Paul A. Vohls Jan 1994

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 …

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Soybean Residual Effects On A Subsequent Maize Crop, E. S. Escuro, D. N. Sundberg, R. M. Shibles Jan 1994

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. …

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Trade, Contact, And Female Health In Northeast Nebraska, Karl Reinhard, Larry Tieszen, Karin L. Sandness, Lynae M. Beiningen, Elizabeth Miller, A. Mohammad Ghazi, Christiana E. Miewald, Sandra V. Barnum Jan 1994

Trade, Contact, And Female Health In Northeast Nebraska, Karl Reinhard, Larry Tieszen, Karin L. Sandness, Lynae M. Beiningen, Elizabeth Miller, A. Mohammad Ghazi, Christiana E. Miewald, Sandra V. Barnum

Karl Reinhard Publications

Most scholars are understandably preoccupied with the impact of Europeans on native peoples who were passive, unwilling, or resistant participants in that contact. We present in this chapter a different case. The Missouri River tribes, including the Omaha and Ponca, willingly engaged in relations with Euramericans, especially in the fur trade that dominated interaction in this region. The time frame for this study is 1780- 1820, a period when interaction between individual traders and Native Americans was replaced by the dominance of the American Fur Company in organized exploitation of the Missouri River lands and peoples. This involvement later contributed …

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Front Matter Jan 1994

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

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Ecoregions And Subregions Of Iowa: A Framework For Water Quality Assessment And Management, Glenn E. Griffith, James M. Omernik, Thomas F. Wilton, Suzanne M. Pierson Jan 1994

Ecoregions And Subregions Of Iowa: A Framework For Water Quality Assessment And Management, Glenn E. Griffith, James M. Omernik, Thomas F. Wilton, Suzanne M. Pierson

Journal of the Iowa Academy of Science: JIAS

Ecoregion frameworks are valuable tools for inventorying and assessing environmental resources, for setting resource management goals, and for developing biological criteria and water quality standards. In a collaborative project between the Iowa Department of Natural Resources (DNR) and the U.S. Environmental Protection Agency (EPA), we have refined boundaries of the EPA's five ecological regions of Iowa and defined six subregions of the Western Corn Belt Plains ecoregion within the state. Lists of candidate stream reference sites have been developed to date for the seven largest regions, and the sites were visited and evaluated by Iowa DNR and U.S. EPA personnel …

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Editorial Board & Iowa Academy Of Science Officers And Directors Jan 1994

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

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Post-Natal Survival Of Raccoons In Relation To Female Age And Denning Behavior, Jonathan J. Judson, William R. Clark, Ronald D. Andrews Jan 1994

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 …

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Influence Of Reduced Leaching On Growth Of Seedlings Of Black Locust Inoculated With Rhizobia, William R. Graves, Sandra R. Anfinson Jan 1994

Influence Of Reduced Leaching On Growth Of Seedlings Of Black Locust Inoculated With Rhizobia, William R. Graves, Sandra R. Anfinson

Journal of the Iowa Academy of Science: JIAS

Seedlings of black locust (Robinia pseudoacacia L.) were inoculated with compatible rhizobia and irrigated twice each week with solution containing either 50 or 150 mg nitrogen/L. Leaching fraction treatments of 0, 0.2, or 0.4 were maintained for 6 weeks. Seedlings supplied 50 mg nitrogen/L grew poorly compared co planes supplied 150 mg nitrogen/L regardless of leaching fraction. Dry masses of shoots and of entire planes were lower for seedlings in the 0 and 0.2 leaching fraction treatments compared with chose in the 0.4 treatment. Neither leaching fraction nor applied nitrogen concentration appeared co affect the number of nodules per plant, …

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Water Quality Monitoring (1988 To 1991) At The Iowa Academy Of Science's Parish Farm, Grundy County, Iowa, Brenda K. Nations, George R. Hallberg Jan 1994

Water Quality Monitoring (1988 To 1991) At The Iowa Academy Of Science's Parish Farm, Grundy County, Iowa, Brenda K. Nations, George R. Hallberg

Journal of the Iowa Academy of Science: JIAS

In May 1988 sampling was initiated to evaluate water quality in relation to management practices at Parish Farm, which is owned by Iowa Academy of Science. Initial results showed tile-line effluent to have high concentrations of nitrate-nitrogen (N03-N). Twelve monitoring wells were installed over a one year period to analyze shallow groundwater at the farm. The wells, tile lines, and surface water were sampled monthly, through October, 1991, and the water analyzed for N03-N and some pesticides. N03-N concentrations varied, related to landuse and management of adjacent areas. Greater N03-N concentrations were …

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Back Cover Jan 1994

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.

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Sanitation And Parasitism At Harpers Ferry, West Virginia, Karl J. Reinhard Jan 1994

Sanitation And Parasitism At Harpers Ferry, West Virginia, Karl J. Reinhard

Karl Reinhard Publications

One focus of historical archaeology at Harpers Ferry National Historical Park, West Virginia, is tracing the development of sanitation at the town through the 1800s and 1900s. Historical documentation indicates that there was a degree of resistance to the modernization of village sanitation. This study attempts to verify this resistance through examination of privy soils for parasites indicative of fecalborne disease, specifically the helminth species Ascaris lumbricoides and Trichuris trichiura. The presence of these parasites in the early 1900s would indicate that fecal-borne disease due to poor sanitation continued to be an aspect of town life. The analysis revealed the …

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Otitis Media, Mastoiditis, And Infracranial Lesions In Two Plains Indian Children, Robert W. Mann, Douglas W. Owsley, Karl J. Reinhard Jan 1994

Otitis Media, Mastoiditis, And Infracranial Lesions In Two Plains Indian Children, Robert W. Mann, Douglas W. Owsley, Karl J. Reinhard

Karl Reinhard Publications

One disease condition that is common to nearly all children is otitis media, also known as middle ear disease. Although most people speak of it as a middle ear "infection," other causes such as neoplasm (tumor) can result in manifestations and symptoms mimicking an infectious process. This paper presents findings related to osseous lesions in two Indian children, approximately three to five years of age, who died with otitis media and infracranial lesions. Through macroscopic and radiographic analysis, it is possible to show that one child probably suffered from tuberculosis and the other from histiocytosis X. From an epidemiological and …

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Loved--Or Lost? Sep 1993

Loved--Or Lost?

Close Up Reports

No abstract provided.

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Prisoners Of The Trade Jun 1993

Prisoners Of The Trade

Close Up Reports

No abstract provided.

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Hawaiian Dryland Agricultural Intensification And The Pacific Economy, Thegn N. Ladefoged Jun 1993

Hawaiian Dryland Agricultural Intensification And The Pacific Economy, Thegn N. Ladefoged

Pacific Studies

No abstract provided.

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Terence E. Hays's Review Of Christin Kocher Schmid's Of People And Plants: A Botanical Ethnography Of Nokopo Village, Madang And Morobe Provinces, Papua New Guinea, Terence E. Hays Jun 1993

Terence E. Hays's Review Of Christin Kocher Schmid's Of People And Plants: A Botanical Ethnography Of Nokopo Village, Madang And Morobe Provinces, Papua New Guinea, Terence E. Hays

Pacific Studies

No abstract provided.

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Hawaiian Dryland Agricultural Intensification And The Pacific Economy, Thegn N. Ladefoged Jun 1993

Hawaiian Dryland Agricultural Intensification And The Pacific Economy, Thegn N. Ladefoged

Pacific Studies

No abstract provided.

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Terence E. Hays's Review Of Christin Kocher Schmid's Of People And Plants: A Botanical Ethnography Of Nokopo Village, Madang And Morobe Provinces, Papua New Guinea, Terence E. Hays Jun 1993

Terence E. Hays's Review Of Christin Kocher Schmid's Of People And Plants: A Botanical Ethnography Of Nokopo Village, Madang And Morobe Provinces, Papua New Guinea, Terence E. Hays

Pacific Studies

No abstract provided.

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Interview With Robert Howard "Bob" Fleming (Fa 388), Manuscripts & Folklife Archives Apr 1993

Interview With Robert Howard "Bob" Fleming (Fa 388), Manuscripts & Folklife Archives

Folklife Archives Oral Histories

Transcription of interview with Robert Howard Fleming conducted by Kevin Ming on 11 April 1993. From folk studies student project concerning the lifeways of tenant farmers in Logan County, Kentucky.

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Interview With Robert Howard "Bob" Fleming (Fa 388), Manuscripts & Folklife Archives Apr 1993

Interview With Robert Howard "Bob" Fleming (Fa 388), Manuscripts & Folklife Archives

Folklife Archives Oral Histories

Transcription of interview with Robert Howard Fleming conducted by Scott Elrod and Kevin Ming on 2 April 1993. From folk studies student project concerning the lifeways of tenant farmers in Logan County, Kentucky.

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