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1990

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Articles 15571 - 15600 of 17675

Full-Text Articles in Social and Behavioral Sciences

Computed Normal Range Of Iowa Statewide July Precipitation, H. C. Vaughan, D. S. Sheets, G. R. White Jan 1990

Computed Normal Range Of Iowa Statewide July Precipitation, H. C. Vaughan, D. S. Sheets, G. R. White

Journal of the Iowa Academy of Science: JIAS

Iowa summer rainfall distributions are examined to identify small-scale anomalies. Examination of extremely wet and dry summer months shows that large rain amounts fall mainly in small, cellular areas for both extremely wet and dry months. These configurations result from individual rainfall events. Analysis of the distribution of mean July rainfall across the state reveals significant anomalous wet and dry regions that contrast with the background, east-west rainfall gradient. Because of the skewed nature of summer rainfall distributions, the median value is used to represent a more realistic expected rainfall amount for any given year. Some parts of the stare …


Editorial Board & Iowa Academy Of Science Officers And Directors Jan 1990

Editorial Board & Iowa Academy Of Science Officers And Directors

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Back Cover Jan 1990

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Tell-Tail Adaptations For Respiration And Rapid Escape In A Freshwater Oligochaete (Lumbriculus Variegatus Mull.), Charles D. Drewes Jan 1990

Tell-Tail Adaptations For Respiration And Rapid Escape In A Freshwater Oligochaete (Lumbriculus Variegatus Mull.), Charles D. Drewes

Journal of the Iowa Academy of Science: JIAS

The aquatic oligochaete, Lumbrimlus variegatus (Order Lumbriculida; Family Lumbriculidae), utilizes a combination of postural and anatomical specializations that enhance gas exchange across the dorsal surface of posterior segments as these segments lay exposed at the air-water interface. Predator avoidance by exposed posterior segments is enhanced by neurobehavioral mechanisms involving a well-developed lateral giant nerve fiber system that mediates rapid escape withdrawal of the worm's tail in response to shadow or mechanosensory stimuli.


Time To Metamorphosis As A Function Of Larval Size In A Population Of Ambystoma Tigrinum Salamanders Consisting Of Cannibal And Typical Morph Phenotypes, Michael J. Lannoo, Michael P. Sweet, Nancy M. Ladehoff, Edmund S. Fangman, William B. Collins Jan 1990

Time To Metamorphosis As A Function Of Larval Size In A Population Of Ambystoma Tigrinum Salamanders Consisting Of Cannibal And Typical Morph Phenotypes, Michael J. Lannoo, Michael P. Sweet, Nancy M. Ladehoff, Edmund S. Fangman, William B. Collins

Journal of the Iowa Academy of Science: JIAS

Salamander larvae of the species Ambystoma tigrinum are dimorphic in northwestern Iowa. In addition to common typical morphs, there exist rare, specialized cannibal morphs, which are induced environmentally by crowding. Cannibal morph phenotypes are characterized morphologically by their large size, proportionately large heads and hypertrophied vomerine teeth, and behaviorally by facultative cannibalism. During metamorphosis amphibians are particularly sensitive to predation. To help understand why cannibal morphs are uncommon, we have raised cannibal and typical morphs in isolation and under crowded conditions to compare the timing and duration of metamorphosis between these morphs. Results show that larger larvae, most of which …


Diatoms (Bacillariophyceae) From The Excelsior Fen-Complex, Dickinson Co., Iowa, With The Description Of Two New Taxa, Charles W. Reimer Jan 1990

Diatoms (Bacillariophyceae) From The Excelsior Fen-Complex, Dickinson Co., Iowa, With The Description Of Two New Taxa, Charles W. Reimer

Journal of the Iowa Academy of Science: JIAS

This paper presents a summary list of the presently known diatom flora of the Excelsior Fen-complex and a description of two new taxa: Navicula incompta var. incurva Reim. var. nov. and Stauroneis bovbjergii Reim. sp. nov. Notes on some physico-chemical parameters of the habitat and on the ecology of the taxa are included.


An Interpretation Of Hustedt's Terms "Schattenlinie", "Perlenreihe" And "Hocker" Using Specimens Of The Cyclotella Radiosa-Complex, C. Distinguenda, Hust., And C. Cyclopuncta Nov. Sp., Hannelore Hakansson, John R. Carter Jan 1990

An Interpretation Of Hustedt's Terms "Schattenlinie", "Perlenreihe" And "Hocker" Using Specimens Of The Cyclotella Radiosa-Complex, C. Distinguenda, Hust., And C. Cyclopuncta Nov. Sp., Hannelore Hakansson, John R. Carter

Journal of the Iowa Academy of Science: JIAS

With the help of light- and scanning electron micrographs HUSTEDT'S terms "Schattenlinie", "Perlenrcihe", and "Hocker" are explained using specimens in the Cydotella radiosa complex, and C. distinguenda HUST. The complicated history of C. operculata (AG.) KUTZ., published elsewhere, has shown that C. distinguenda HUST. is the correct name to be used for this taxon. In this connection the new nomenclatural combination C. distinguenda var. unipunctata nov. comb. is proposed.

Morphological differences are discussed and the possibility of different "unipunctata" species is shown. Distinct morphological features found indicate the necessiry to describe a new species: C. cyclopuncta nov. sp. rather than …


The Mating Systems And Pollination Biology Of Three Species Of Verbena (Verbenaceae), Robert W. Cruden, Kristina K. Baker, Thomas E. Cullinan, Karen A. Disbrow, Kelly L. Douglas, John D. Erb, Kenneth J. Kirsten, Mary L. Malik, Elizabeth A. Turner, Jonathon A. Weier, Sherry R. Wilmot Jan 1990

The Mating Systems And Pollination Biology Of Three Species Of Verbena (Verbenaceae), Robert W. Cruden, Kristina K. Baker, Thomas E. Cullinan, Karen A. Disbrow, Kelly L. Douglas, John D. Erb, Kenneth J. Kirsten, Mary L. Malik, Elizabeth A. Turner, Jonathon A. Weier, Sherry R. Wilmot

Journal of the Iowa Academy of Science: JIAS

Because their flowers can be cross- and/or self-pollinated Verbena stricta, V hastata and V urticifolia are facultatively xenogamous. We suggest the flowers can be cross-pollinated because I) the fruit set of caged plants was substantially lower than that of open-pollinated plants, i.e. pollinators were necessary for typical fruit set and 2) the flowers of each species attracted a diverse array of hymenopteran, dipteran and lepidopteran pollinators that were capable of moving pollen between plants. Self-pollination was low due to the spatial separation of anthers and stigmas and/or an angled corolla that decreased the likelihood of pollen dropping from the anthers …


A Summer Course In Invertebrate Developmental Biology At Iowa Lakeside Laboratory: A Unique Experience, Carol W. Schutte, Dale J. Witt, Nicole Y. Janosek, Douglas E. Robinson, Edwin C. Powell, George G. Brown Jan 1990

A Summer Course In Invertebrate Developmental Biology At Iowa Lakeside Laboratory: A Unique Experience, Carol W. Schutte, Dale J. Witt, Nicole Y. Janosek, Douglas E. Robinson, Edwin C. Powell, George G. Brown

Journal of the Iowa Academy of Science: JIAS

The course, "Developmental Biology of Selected Invertebrates'', has been offered in alternate years at Iowa Lakeside Laboratory (Ill) on Lake West Okoboji, Dickinson County, Iowa, since the first summer session of 1983. This course has taken advantage of the great diversity of invertebrates found in the Ill area and has demonstrated to students and faculty alike the exciting phenomena and principles of developmental biology. The course is continuously evolving as new experiments and observations are discovered with each offering of the course.


University Of Texas At Tyler Catalog, 1990-1992, University Of Texas At Tyler Jan 1990

University Of Texas At Tyler Catalog, 1990-1992, University Of Texas At Tyler

Catalogs

This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s).


Image Enhancement Of Faded Historic Documents, Robert Crisp Jr., Barry C. Wells Jan 1990

Image Enhancement Of Faded Historic Documents, Robert Crisp Jr., Barry C. Wells

Journal of the Arkansas Academy of Science

No abstract provided.


Government Spending + Taxes In A Dynamic Context, Anwar Shaikh Phd Jan 1990

Government Spending + Taxes In A Dynamic Context, Anwar Shaikh Phd

Archives of Anwar Shaikh

This collection includes.

• Anwar Shaikh. (1988, September 18). Extension of Marx/Keynes model to long-term debt (Handwritten notes). Department of Economics, The New School for Social Research, New York, NY.

• Anwar Shaikh. (1990, March 26). Money, finance, and effective DD: Reading notes (Handwritten notes). Department of Economics, The New School for Social Research, New York, NY.

• Anwar Shaikh. (1988, October 19). Summary inventory and money reserves in SR (Handwritten notes). Department of Economics, The New School for Social Research, New York, NY.

• Anwar Shaikh. (1986, August). Two-dimensional nonlinear system (Handwritten notes). Department of Economics, The New School …


Spread The Word, January-February 1990 Jan 1990

Spread The Word, January-February 1990

Spread the Word

A newsletter published for Deaf Catholics in Dallas, TX

Spread the Word Finding Aid


Underwood Law Library Newsletter, Vol. 2, No. 1 – Fall 1990, Southern Methodist University, Dedman School Of Law, Underwood Law Library Jan 1990

Underwood Law Library Newsletter, Vol. 2, No. 1 – Fall 1990, Southern Methodist University, Dedman School Of Law, Underwood Law Library

Law Library Newsletter (1989-2006)

No abstract provided.


Assorted Non-Shaikh 2, Anwar Shaikh Phd Jan 1990

Assorted Non-Shaikh 2, Anwar Shaikh Phd

Archives of Anwar Shaikh

This collection includes:

  • Semmler, W., & Sieveking, M. (n.d.). Nonlinear liquidity-growth dynamics with corridor-stability. Journal of Economic Behavior & Organization, 22(2), 189.

  • Pages from Studies on Mario Bunge’s Treatise (1990), edited by P. Weingartner & G. J. W. Dorn. Rodopi.

  • Goalstone, C. On a macrofoundation of macroeconomics: Parts 1–3.

  • Goalstone, C. A macrofoundation restated.

  • Kopcke, R. W. (1980). Potential growth, productivity, and capital accumulation. New England Economic Review, 22–41.

  • Mirowski, P. (1987). Shall I compare thee to a Minkowski-Ricardo-Leontief-Metzler matrix of the Mosak-Hicks type?: Or, rhetoric, mathematics, and the nature of neoclassical economic theory. Economics & Philosophy, 3(1), 67–95.

  • Slovo, …


Community Power In Humboldt County: A Reputational Approach, Jerome Matthew Bearbower Jan 1990

Community Power In Humboldt County: A Reputational Approach, Jerome Matthew Bearbower

Cal Poly Humboldt theses and projects

The primary objective of this project is to better understand the feasibility of utilizing variables such as population numbers, economic diversity, cultural diversity, and the structure of government as measuring tools for identifying community power distributions within a larger pluralist/elitist framework. This is significant for two reasons. Theoretically, current generalizations in the field can be scientifically tested within an empirical framework. Practically, for those individuals/groups who are working towards social change, an informed picture of leadership distributions can be tantamount to effective participation within the community policy process. Methodologically, this study will utilize the reputational approach, originally proposed by Floyd …


Texas Silver-Haired Legislature Foundation Minutes, 1990, Texas Silver Haired Legislature Foundation Jan 1990

Texas Silver-Haired Legislature Foundation Minutes, 1990, Texas Silver Haired Legislature Foundation

Texas Silver-Haired Legislature

Texas Silver-Haired Legislature Foundation minutes from 1990.


Note To Sue Burch Enclosing Potential Information For Newsletters, 1990, Hazel Johnson Jan 1990

Note To Sue Burch Enclosing Potential Information For Newsletters, 1990, Hazel Johnson

Newsletter and Public Relations Committee

A note from Hazel Johnson to Sue Burch enclosing Scholarship Committee information for Burch to use for the Southeastern Law Librarian and to send to the AALL Newsletter.


"What Is A Law Librarian?" Brochure, Seaall Jan 1990

"What Is A Law Librarian?" Brochure, Seaall

Newsletter and Public Relations Committee

A SEAALL brochure providing basic information about law librarianship. Exact date unknown but likely from early 1990s.


Note To Sue Burch To Call Timothy Coggins, 1990, Seaall Jan 1990

Note To Sue Burch To Call Timothy Coggins, 1990, Seaall

Newsletter and Public Relations Committee

A note to Sue Burch from an unknown writer asking Burch to call Timothy Coggins


1990 Seaall Annual Meeting Announcement, Seaall Jan 1990

1990 Seaall Annual Meeting Announcement, Seaall

Newsletter and Public Relations Committee

An announcement for the 1990 SEAALL Annual Meeting: "An Anthology of Issues Facing Law Librarians".


List Of Scholarship Committee Members, 1990-1991, Seaall Jan 1990

List Of Scholarship Committee Members, 1990-1991, Seaall

Scholarship Committee

A list of members of SEAALL's Scholarship Committee.


Southeastern Law Librarian Additional Materials 1990-1991, Seaall Jan 1990

Southeastern Law Librarian Additional Materials 1990-1991, Seaall

Newsletters

No abstract provided.


Southeastern Law Librarian Winter 1990, Seaall Jan 1990

Southeastern Law Librarian Winter 1990, Seaall

Newsletters

No abstract provided.


Note To Timothy Coggins, 1990, Sue Burch Jan 1990

Note To Timothy Coggins, 1990, Sue Burch

Newsletter and Public Relations Committee

A note from Sue Burch to Timothy Coggins with enclosures Burch sent to Ed Edmonds regarding the SEAALL Handbook.

Date of note is unclear but is likely circa 1990-1991, as the enclosed letter to Edmonds is dated 1990.


Checklist For Dean And Library Association Letters, Sue Burch Jan 1990

Checklist For Dean And Library Association Letters, Sue Burch

Newsletter and Public Relations Committee

A checklist tracking the sending of Library School Dean and Library Association letters.


Draft Letters To Library School Deans, 1990, Sue Burch Jan 1990

Draft Letters To Library School Deans, 1990, Sue Burch

Newsletter and Public Relations Committee

Drafts of letters to Library School Deans to be sent by members of the Publicity and Public Relations Committee.


Lucile Elliott Scholarship Statistics, 1990, Seaall Jan 1990

Lucile Elliott Scholarship Statistics, 1990, Seaall

Scholarship Committee

A listing of statistics on applicants and awards of the Lucile Elliott Scholarship.


Lucile Elliott Scholarship Recipients, 1990, Seaall Jan 1990

Lucile Elliott Scholarship Recipients, 1990, Seaall

Scholarship Committee

A listing of the winners of the 1990 Lucile Elliott Scholarship.


Information And The End User: Proceedings Of The Viiith World Congress Of The International Association Of Agricultural Librarians And Documentalists, Antoinette Paris Powell Jan 1990

Information And The End User: Proceedings Of The Viiith World Congress Of The International Association Of Agricultural Librarians And Documentalists, Antoinette Paris Powell

Library Faculty and Staff Publications

Proceedings of the VIIIth World Congress of the International Association of Agricultural Librarians and Documentalists. May 28-31, 1990. Budapest, Hungary.