Open Access. Powered by Scholars. Published by Universities.®

Social and Behavioral Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

Life Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 16291 - 16320 of 22971

Full-Text Articles in Social and Behavioral Sciences

Lessons From An Inventory Of The Ames, Iowa, Flora (1859-2000), William R. Norris, Deborah Q. Lewis, Mark P. Widrlechner, Jimmie D. Thompson, Richard O. Pope Jan 2001

Lessons From An Inventory Of The Ames, Iowa, Flora (1859-2000), William R. Norris, Deborah Q. Lewis, Mark P. Widrlechner, Jimmie D. Thompson, Richard O. Pope

Journal of the Iowa Academy of Science: JIAS

A botanical survey of the vascular flora of the "planning and zoning jurisdiction" of the city of Ames, Iowa (i.e., the area within a boundary 3.2 km beyond the current city limits) was compiled from 1990 to 2000. During this survey, 916 taxa (71 % native) were encountered within chis boundary. Literature reviews and a survey of Iowa State University's Ada Hayden Herbarium for specimens that had been collected in Ames since 1859 add 204 taxa to the flora. This total of 1,120 taxa exceeds the number of taxa known from any comparable area (including counties) in Iowa. We produced …


In Memoriam: George Knaphus, Lois H. Tiffany Jan 2001

In Memoriam: George Knaphus, Lois H. Tiffany

Journal of the Iowa Academy of Science: JIAS

George Knaphus, 75, died Saturday, 20 May 2000, after a two year battle with lymphoma. He was born at McCallsburg, Iowa and resided on a farm near there except during his WWII service years and his undergraduate college years at UNI until moving to Ames in 1998. He graduated from McCallsburg High School in 1942, served in the U.S. Army from 1943-45 in the 112th Infantry 28th division in Europe, and fought in the Battle of the Bulge, receiving the Bronze Star. He graduated with a B.S. in education from Iowa State Teachers College in 1949, earning master and doctorate …


Cover - Table Of Contents Jan 2001

Cover - Table Of Contents

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Front Matter Jan 2001

Front Matter

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Expression Of Heterosis In Leaming And Midland Corn Belt Dent Populations, M. J. Carena, A. R. Hallauer Jan 2001

Expression Of Heterosis In Leaming And Midland Corn Belt Dent Populations, M. J. Carena, A. R. Hallauer

Journal of the Iowa Academy of Science: JIAS

Successful maize (Zea mays 1.) breeding programs are based on specific heterotic patterns. The Iowa Stiff Stalk Synthetic x Lancaster Sure Crop heterotic pattern is widely exploited in U.S. maize breeding programs. Alternative U.S. heterotic patterns have been suggested, but they have received limited attention and improvement. The objectives of this study were to evaluate cultivar crosses between Leaming and Midland Yellow Dent cultivars before and after inbred progeny selection and to assess their potential as an alternative U.S. heterotic pattern. Grain yield had a midparent heterosis value of 4.9% before selection and 17.8% in the third cycle of selection. …


Myxomycetes Of Big Bend National Park, Texas, Lois H. Tiffany, George Knaphus Jan 2001

Myxomycetes Of Big Bend National Park, Texas, Lois H. Tiffany, George Knaphus

Journal of the Iowa Academy of Science: JIAS

Seventy species of Myxomycetes have been collected directly in the field or observed later in the laboratory from field materials in moist chambers from Big Bend National Park, Texas. Collections were made over a 10 year period, 1989-1997 and 1999, during intensive seven-day fungus collecting trips to Big Bend in late September each year. McGraw (1968) in an earlier study of Texas Myxomycetes had reported 28 species from Big Bend, some of which were also found in this study. A total of 81 species are reported from the park. A variety of environmental conditions occurred during the 10 years with …


Back Cover Jan 2001

Back Cover

Journal of the Iowa Academy of Science: JIAS

No abstract provided.


Analysis Of A Mixed Cereal Of Legumes That Processes Similar Nutritional Characteristics To A Cereal Product Of Local Consumption And Its Economic Feasibility, Willy Ivan Anzaldo Garcia Jan 2001

Analysis Of A Mixed Cereal Of Legumes That Processes Similar Nutritional Characteristics To A Cereal Product Of Local Consumption And Its Economic Feasibility, Willy Ivan Anzaldo Garcia

Theses and Dissertations

In this analysis, we plan on developing vegetable mixes with high nutritional qualities and instant fuel consumption. These are to be used as a nutritional supplement in the feeding of children from 6 months of age. Initially, I selected the raw material, due to its high protein content and low cost (soy, tarhui, Cuban corn, rice, wheat, barley). They formed mixes with nutritional characteristics similar to the control for reference (15.5% of protein, 419 kcal of energy). From these formulas, different tests of completed production of mixtures, going so far as to obtain eight mixes with good nutritional and organoleptic …


12 | Excavations At Efrata: A Burial Ground From The Intermediate And Middle Bronze Ages, Rivka Gonen Jan 2001

12 | Excavations At Efrata: A Burial Ground From The Intermediate And Middle Bronze Ages, Rivka Gonen

IAA Reports—Monograph Series of the Israel Antiquities Authority

This volume presents the results of the 1979 excavations at the site of Efrata, a hill on the Hebron–Jerusalem road. On the summit is a tumulus, and burial grounds of shaft tombs on the slopes were in use during the Intermediate Bronze Age (IBA) and Middle Bronze Age II (MB II). The hill was apparently an isolated cemetery intensively used by semi-nomadic pastoralists. The shaft tombs were first hewn during IBA, and after a short gap (MB I), reused in MB II. The pottery and small finds are presented, and analysis of the human remains indicates that the burials in …


13 | Tel Te’O: A Neolithic, Chalcolithic, And Early Bronze Age Site In The Ḥula Valley, Emanuel Eisenberg, Avi Gopher, Raphael Greenberg Jan 2001

13 | Tel Te’O: A Neolithic, Chalcolithic, And Early Bronze Age Site In The Ḥula Valley, Emanuel Eisenberg, Avi Gopher, Raphael Greenberg

IAA Reports—Monograph Series of the Israel Antiquities Authority

This multi-level site in the Ḥula Valley revealed a rare pre- and proto-historic sequence extending from the Pre-Pottery Neolithic period (PPNB), through the Pottery Neolithic period (PN), until it was finally abandoned in the Early Bronze Age II; it was again occupied during medieval times. The abundant water resources were the probable reason for the continued settlement here, despite the difficulties presented by the marshy environment.

The settlements were apparently small villages based on simple agriculture and husbandry throughout their existence, representing local variations of the known cultures of the various periods. The Chalcolithic settlement shows affinities with the Golan …


Review Of Encyclopedia Of The Biosphere: Humans In The Worlds Ecosystems, John Stephen Brantley Jan 2001

Review Of Encyclopedia Of The Biosphere: Humans In The Worlds Ecosystems, John Stephen Brantley

Faculty & Staff Research & Creative Activity

No abstract provided.


Review Of Food's Frontier: The Next Green Revolution, John Stephen Brantley Jan 2001

Review Of Food's Frontier: The Next Green Revolution, John Stephen Brantley

Faculty & Staff Research & Creative Activity

No abstract provided.


Review Of Encyclopedia Of The Biosphere: Humans In The Worlds Ecosystems, John Brantley Jan 2001

Review Of Encyclopedia Of The Biosphere: Humans In The Worlds Ecosystems, John Brantley

Faculty & Staff Research & Creative Activity

No abstract provided.


Review Of Food's Frontier: The Next Green Revolution, John Brantley Jan 2001

Review Of Food's Frontier: The Next Green Revolution, John Brantley

Faculty & Staff Research & Creative Activity

No abstract provided.


Out Of Africa: Origins Of The Taenia Tapeworms In Humans, Eric P. Hoberg, Nancy L. Alkire, Alan De Queiroz, Arlene Jones Jan 2001

Out Of Africa: Origins Of The Taenia Tapeworms In Humans, Eric P. Hoberg, Nancy L. Alkire, Alan De Queiroz, Arlene Jones

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Phylogenetic and divergence date analyses indicate that the occurrence of Taenia tapeworms in humans pre-dates the development of agriculture, animal husbandry and domestication of cattle (Bos spp.) or swine (Sus scrofa) Taeniid tapeworms in Africa twice independently colonized hominids and the genus Homo prior to the origin of modern humans. Dietary and behavioural shifts, from herbivory to scavenging and carnivory, as early Homo entered the carnivore guild in the Pliocene/Pleistocene, were drivers for host switching by tapeworms to hominids from carnivores including hyaenids and felids. Parasitological data provide a unique means of elucidating the historical ecology, foraging behavior …


11 | The Al-Ṣubayba (Nimrod) Fortress: Towers 11 And 9, Moshe Hartal Jan 2001

11 | The Al-Ṣubayba (Nimrod) Fortress: Towers 11 And 9, Moshe Hartal

IAA Reports—Monograph Series of the Israel Antiquities Authority

This volume presents the results of the 1993 excavations in two towers at the impressive medieval ‘Al-Subayba (Nimrod) fortress in the Golan Heights, on the southern slopes of Mt. Hermon. It was built by the Ayyubids in the 13th century with the purpose of guarding a major access route to Damascus against armies coming from the west. It was later rebuilt as a palace and mosque by the Mamluks, and finally destroyed by an earthquake. The excavations cleared Tower 11 to facilitate the exit route to the postern gate. The history and building technology of the fortress are discussed.


The Importance Of Early Successional Habitats To Rare, Restricted-Range, And Endangered Birds In The Ecuadorian Andes, Mark R. Welford Jan 2001

The Importance Of Early Successional Habitats To Rare, Restricted-Range, And Endangered Birds In The Ecuadorian Andes, Mark R. Welford

Earth, Environment & Sustainability: Faculty Publications

Since the mid-1980s, exhausted pastures in Ecuador have been increasingly abandoned, allowing forest regeneration. At approximately 2,200 m in the Tandayapa valley I surveyed four abandoned pastures to evaluate their use by birds. Each former pasture represented a different age of vegetation maturity. The number of bird species recorded in each successively older abandoned pasture increased but only half the number of species recorded in the undisturbed forest site was recorded in the most mature pasture. However, at least four restricted-range bird species were recorded in a single pasture. As pastures rapidly convert to secondary forest, more bird species and …


Approaches To Measuring Quality Of The Wilderness Experience, William T. Borrie, Robert M. Birzell Jan 2001

Approaches To Measuring Quality Of The Wilderness Experience, William T. Borrie, Robert M. Birzell

Society and Conservation Faculty Publications

Wilderness is a special place that provides opportunity for unique and profound experiences. An essential task for the maintenance of these recreational opportunities is the definition and monitoring of experience quality. Four approaches to the measurement of the wilderness experience have developed in over 30 years of research: satisfaction approaches (which focus on evaluation of onsite conditions), benefits-based approaches (focusing on psychological outcomes), experience-based approaches (describing cognitive states experienced in wilderness), and meanings-based approaches (documenting socially constructed meanings ascribed to the experience). Each approach has its strengths and weaknesses. Given that the wilderness experience is a multifaceted phenomenon, it is …


Nutritional Food And Health Education With Instructive Lessons In The Community School Of La Rinconada, Cantón Ibarra, Province Of Imbabura, Olga Maria Gómez Chirán Jan 2001

Nutritional Food And Health Education With Instructive Lessons In The Community School Of La Rinconada, Cantón Ibarra, Province Of Imbabura, Olga Maria Gómez Chirán

Theses and Dissertations

The general objective of this work was to offer nutritional food and health education using instructive lessons that were prepared based on the diagnostic of knowledge among teachers and children in the School of La Rinconada. The study is descriptive-cross performed from October 2000 to June 2001. The universe of study is 100% of teachers and children attending schools in the communities of La Rinconada and Cuambo, totaling 104. The considered variables are diet, nutrition, and health-related topics. These variables contemplate the elementary education plan of study, besides providing training to students and teachers. Because the project was developed primarily …


Eating, Nutrition And Of Health Diagnostic Of The Elementary Schools Of The Communities Of Guambo And The Rinconada, Province Of Imbabura 2002-2001, Ruth Muriel Jan 2001

Eating, Nutrition And Of Health Diagnostic Of The Elementary Schools Of The Communities Of Guambo And The Rinconada, Province Of Imbabura 2002-2001, Ruth Muriel

Theses and Dissertations

The rural communities of the province of Imbabura present multiple problems of environmental, educational, and economic kind. Previous studies show that the rural communities of the Ecuadorian population present serious problems of health and nutrition, among those that excel are: poliparasitosis, respiratory infections and diarrheal, malnutrition, deficiency of micro nutrients, sanitary deficiency, scarce economic resources and low level of instruction. All these factors have caused a decrease in the productive capacity of the country and affected their level of development. In addition, delay exists in size in the students, which leads to a decrease in the capacity for physical work, …


Evolutionary Analysis In Law: Some Objections Considered, Owen D. Jones Jan 2001

Evolutionary Analysis In Law: Some Objections Considered, Owen D. Jones

Vanderbilt Law School Faculty Publications

This Article appears in a special issue of the Brooklyn Law Review on DNA: Lessons from the Past - Problems for the Future. It first addresses why law needs insights from behavioral biology, and then identifies and responds to a variety of structural and conceptual barriers to such evolutionary analysis in law.


Annual Review Of The World Pheasant Association 2000/2001, World Pheasant Association Jan 2001

Annual Review Of The World Pheasant Association 2000/2001, World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Reports and Other Materials

President's message, Keith C. R. Howman

Chairman of Trustees' report, Richard P. Howard

Treasurer's annual report and accounts, Ian F. Hoggarth

Conservation Committee report, Philip J. K. McGowan

Strategic Development Committee report

Chapters and Affiliate reports

Pheasant Specialist Group report, Peter J. Garson

Partridge, Quail and Francolin Specialist Group report, John P. Carroll

Grouse Specialist Group report, Ilse Storch

Megapode Specialist Group report, René W. R. J. Dekker and Darryl N. Jones

Cracid Specialist Group report, Daniel M. Brooks

The new Conservation Breeding and Aviculture Group for WPA in the United Kingdom, Garry Robbins, Mike Cook, and Keith Chalmers-Watson

Frontal …


Possible Levels Of Animal Consciousness With Reference To Grey Parrots (Psittacus Erithacus), Irene M. Pepperberg, Spencer K. Lynn Dec 2000

Possible Levels Of Animal Consciousness With Reference To Grey Parrots (Psittacus Erithacus), Irene M. Pepperberg, Spencer K. Lynn

Sentience Collection

Researchers often study nonhuman abilities by assuming their subjects form representations about perceived stimuli and then process such information; why then would consciousness be required, and, if required, at what level? Arguments about nonhuman consciousness range from claims of levels comparable to humans to refutation of any need to study such phenomena. We suggest that (a) species exhibit different levels attuned to their ecological niches, and (b) animals, within their maximum possible level, exhibit different extents of awareness appropriate to particular situations, much like humans (presumably conscious) who often act without conscious awareness of factors controlling their behavior. We propose …


Spontaneous Discrimination Of Natural Stimuli By Chimpanzees (Pan Troglodytes), David A. Brown, Sarah T. Boysen Dec 2000

Spontaneous Discrimination Of Natural Stimuli By Chimpanzees (Pan Troglodytes), David A. Brown, Sarah T. Boysen

Sentience Collection

Six chimpanzees (Pan troglodytes) were presented with pairs of color photographic images of 5 different categories of animals (cat, chimp, gorilla, tiger, fish). The subjects responded to each pair using symbols for "same" and "different." Both within- and between-category discriminations were tested, and all chimpanzees classified the image pairs in accordance with the 5 experimenter-defined categories under conditions of nondifferential reinforcement. Although previous studies have demonstrated identification or discrimination of natural categories by nonhuman animals, subjects were typically differentially reinforced for their responses. The present findings demonstrate that chimpanzees can classify natural objects spontaneously and that such classifications may be …


Animal Minds And Animal Emotions, Marian Stamp Dawkins Dec 2000

Animal Minds And Animal Emotions, Marian Stamp Dawkins

Emotion Collection

The possibility of conscious experiences of emotions in non-human animals has been much less explored than that of conscious experiences associated with carrying out complex cognitive tasks. However, no great cognitive powers are needed to feel hunger or pain and it may be that the capacity to feel emotions is widespread in the animal kingdom. Since plants can show surprisingly sophisticated ‘‘choice’’ and ‘‘decision-making’’ mechanisms and yet we would not wish to imply that they are conscious, attribution of emotions to animals has to be done with care. Whether or not an animal possesses anticipatory mechanisms associated with positive and …


10 | The Synagogue At Korazim: The 1962–1964, 1980–1987 Excavations, Ze’Ev Yeivin Dec 2000

10 | The Synagogue At Korazim: The 1962–1964, 1980–1987 Excavations, Ze’Ev Yeivin

IAA Reports—Monograph Series of the Israel Antiquities Authority

The town of Korazim is of special interest to Christendom, and thus was frequently mentioned by scholars and travelers to the Holy Land. The identification of Korazim with Khirbat Karazeh is now almost universally accepted. The site was extensively surveyed and excavated in 1962–1964, under the direction of Ze’ev Yeivin on behalf of the Department of Antiquities. Based on these excavations, the layout of the town and the setting of the synagogue within it could be elucidated. In 1980­–1987, excavations at the site were resumed, during which some 30 probes were carried out in the synagogue and its vicinity.

The …


Arkansas Animal Science Department Report 2000, Zelpha B. Johnson, D. Wayne Kellogg Dec 2000

Arkansas Animal Science Department Report 2000, Zelpha B. Johnson, D. Wayne Kellogg

Arkansas Agricultural Experiment Station Research Series

Animal Science is very much devoted to youth education and development. During the past year, over 20,000 youth were involved in 4-H livestock projects. Two very successful activities that took place last year were the Mid-American Grassland Evaluation Contest and Livestock Judging Camps. The Grassland Contest is designed to teach students about grassland resource management for livestock and wildlife uses. The contest was held in Cape Girardeau, Missouri. Firstplace honors in the 4-H division went to White County, and second place honors went to Van Buren County. Two Livestock Judging Camps (Fayetteville and Hope) were conducted this past year. A …


Hybridization Of Dna By Sequential Immobilization Of Oligonucleotides At The Air-Water Interface, Murali Sastry, Vidya Ramakrishnan, Mrunalini Pattarkine, Anand Gole, K. N. Ganesh Nov 2000

Hybridization Of Dna By Sequential Immobilization Of Oligonucleotides At The Air-Water Interface, Murali Sastry, Vidya Ramakrishnan, Mrunalini Pattarkine, Anand Gole, K. N. Ganesh

Faculty Works

The hybridization of DNA by sequential electrostatic and hydrogen-bonding immobilization of single-stranded complementary oligonucleotides at the air-water interface with cationic Langmuir monolayers is demonstrated. The complexation of the single-stranded DNA molecules with octadecylamine (ODA) Langmuir monolayers was followed in time by monitoring the pressure-area isotherms. A large (and slow) expansion of the ODA monolayer was observed during each stage of complexation in the following sequence: primary single-stranded DNA followed by complementary single-stranded DNA followed by the intercalator, ethidium bromide. Langmuir-Blodgett (LB) films of the ODA-DNA complex were formed on different substrates and characterized using quartz-crystal microgravimetry (QCM), Fourier transform infrared …


Wpa News 63 (2000), World Pheasant Association Nov 2000

Wpa News 63 (2000), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (November 2000), number 63

Published by the World Pheasant Association


Santa Clara Magazine, Volume 42 Number 2, Fall 2000, Santa Clara University Oct 2000

Santa Clara Magazine, Volume 42 Number 2, Fall 2000, Santa Clara University

Santa Clara Magazine

10 - I WANT MY IPO! By Susan Vogel. With so much venture capital available out there, why do women have to sprint to catch up with men in the race for funding?

14 - ON THE THRESHOLD OF A NEW ERA By George F. Giacomini, Jr. A long-time SCU professor offers his opinion of the most pivotal moments in the University's 150-year history, from wars to the admission of women.

18 - OF HEADHUNTERS AND SOLDIERS By Renato Rosaldo. Living with a headhunting Filipino tribe taught this author to be open to the possibility that other cultures have valid, …