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Articles 3511 - 3540 of 4995
Full-Text Articles in Entire DC Network
New Books
Iowa Science Teachers Journal
This review section is a compilation of selections of new materials from the various publishers. It is anticipated that this approach will continue to help science educators keep abreast of current additions in curriculum materials.
Rearing Snakes From Eggs, John L. Williams
Rearing Snakes From Eggs, John L. Williams
Iowa Science Teachers Journal
The incubation of snake eggs is an interesting and enjoyable project. It can be done with a minimum of easy-to-acquire equipment and with little work on your part other than periodic checks on the condition of the incubator.
A Course Outline For One Semester 10th Grade Chemistry, Robert James
A Course Outline For One Semester 10th Grade Chemistry, Robert James
Iowa Science Teachers Journal
Unit I : Introduction to chemistry and how chemists work.
Incidence Of Some Disease Antibodies In Iowa Deer, Arnold O. Haugen
Incidence Of Some Disease Antibodies In Iowa Deer, Arnold O. Haugen
Proceedings of the Iowa Academy of Science
Serum samples from white-tailed deer (Odocoileus virginianus) in Iowa were checked for various disease antibodies from 1959 through 1963. Leptospirosis antibodies were found in 9.5% of 369 sera checked. L. grippotyphosa (3.9%) L. pomona (3.6%) and L. autumnalis (2.8%) were found most frequently. L. ballum, L. hardjo, L. sejroe, and L. autralis were also noted. No evidence of brucellosis was found in 231 sera checked. Evidence for western or California strains of encephalitis was noted. Anaplasmosis was also present. Johne's disease antibodies were not found in a sample of deer from western Iowa.
Effect Of Thyroidectomy On The Mechanics Of Skeletal And Intestinal Smooth Muscle, Russell R. Rulon
Effect Of Thyroidectomy On The Mechanics Of Skeletal And Intestinal Smooth Muscle, Russell R. Rulon
Proceedings of the Iowa Academy of Science
Rats made hypothyroid by surgical thyroidectomy were compared with controls relative to the shortening velocity and maximum shortening ability of the intestinal smooth muscle and the gastrocnemius. Hypothyroidism showed some potentiation of maximum shortening, but no effect on the shortening velocity of the gastrocnemius. Intestinal smooth muscle maximum shortening as well as shortening velocity tend to be depressed. There is some evidence for a differential effect of thyroid hormone lack in the two muscle types.
A Ph Study Of Four Media Inoculated With Bacteria And Protozoa, Robert F. Mote
A Ph Study Of Four Media Inoculated With Bacteria And Protozoa, Robert F. Mote
Proceedings of the Iowa Academy of Science
Fifteen species of protozoa were used for a 36 day period to test the pH of four protozoa media. During this experiment the pH was determined every three days for control media, the media with bacteria, and the media with bacteria and protozoa. The pH curve included a lag phase, an acceleration phase, a plateau, and a decline with three of the four media during the 36 days. The fourth medium did not have a decline from the plateau during the 36 days. The protozoa and the four media are described.
Crustacea Of The Environs Of St. John, New Brunswick, Canada, Richard W. Coleman
Crustacea Of The Environs Of St. John, New Brunswick, Canada, Richard W. Coleman
Proceedings of the Iowa Academy of Science
The following species of crustacea were collected in a survey of the environs of St. John, New Brunswick, Canada: Crangonyx gracilis Smith, Gammarus duebeni Lilly, Gammarus lawrencianus Bousfield, Gammarus oceanicus Segerstrale, Gammarus tigrinus Sexton, Hyale nilssoni Rathke, Hyalella azteca Sauss., Jaera albifrons Leach, Marinogammarus finmarchicus Dahl, Marinogammarus obtusatus Dahl and Marinogammarus stoerensis Reid: Hyalella azteca was the predominant species in purely fresh water lakes; Gammarus tigrinus predominated in fresh to brackish waters; and Hyale nilssoni appeared to be the dominant species from marine sources.
Nature, Man, And God In Robinson Jeffers’ Inhumanism, Chloe Winifred Armstrong
Nature, Man, And God In Robinson Jeffers’ Inhumanism, Chloe Winifred Armstrong
Dissertations and Theses @ UNI
Inhumanism, Robinson Jeffers' philosophical solution to the problems of modern society, is highly individualistic and reflects this author's pessimistic attitude toward the present and the future of the species. His definition, stated in prose as: " ... a shifting of emphasis and significance from man to not-man; the rejection of human solipsism and the recognition of the transhuman magnificence.", presents a cosmography made up of three divisions: man, not-man, and the transhuman magnificence. Man, in this definition, includes all the species homo sapiens from its beginning to some future end. Jeffers feels that the species came into being through environmental …
The Implications Of The Sex Discrimination Provisions Of The Civil Rights Act Of 1964 Upon Seniority At The Rath Packing Company, Waterloo, Iowa, Robert Harry Beener
The Implications Of The Sex Discrimination Provisions Of The Civil Rights Act Of 1964 Upon Seniority At The Rath Packing Company, Waterloo, Iowa, Robert Harry Beener
Dissertations and Theses @ UNI
Title VII of the Civil Rights Act of 1964 was a controversial law making discrimination by sex unlawful. Compliance with Title VII presented problems for The Rath Packing Company as well as the meat packing industry in general. Use of separate seniority lists for assigning males and females to jobs had been a long time practice in the meat packing industry, but such lists became unlawful July 2, 1965. The problem of merging separate seniority lists into one list for both sexes, and then using the new single seniority list to assign jobs to those being discriminated against, was difficult …
A Tornado, James Hearst
Iowa Junior Academy Of Science: The Thirty-Fourth Convention, April 15 And 16, 1966, Iowa Academy Of Science
Iowa Junior Academy Of Science: The Thirty-Fourth Convention, April 15 And 16, 1966, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
An Introductory Course In Summer Field Biology, Virginia Jeffries
An Introductory Course In Summer Field Biology, Virginia Jeffries
Iowa Science Teachers Journal
For more than a quarter of a century, the writer has been sharing science experiences in field biology with students - kindergarten through grade twelve - in the public schools of Iowa. This experience in teaching science to a wide variety of age groups, together with observations of student interests in science over the years have led the writer to believe as do Benton and Werner in their book Principles of Field Biology and Ecology when they say that "The world of nature is too great to encompass in a single book or a single lifetime; but no study is …
Simple Radiation Studies In Biology, C. L. Christensen, D. J. Schmidt
Simple Radiation Studies In Biology, C. L. Christensen, D. J. Schmidt
Iowa Science Teachers Journal
Radioisotopes are a part of modern biological science. Radiation studies can be carried out without great expense. Thus they are available for the secondary level. Projects are easy to develop and can be adapted to any area of biological science. We would like to encourage all biology teachers to incorporate the use of radioisotopes into their programs.
Assistants In High School Science, Henry Leroy Becker, Mary Elizabeth Sievert
Assistants In High School Science, Henry Leroy Becker, Mary Elizabeth Sievert
Iowa Science Teachers Journal
The modern science programs of today have created increased emphasis upon the laboratory situation. With this increased emphasis on laboratory work, the science teacher must spend many hours preparing for laboratory experiences which will meet the needs of the students enrolled in today's and tomorrow's science courses. In order to meet these needs, what alternatives are available to the science teacher in preparation for a laboratory situation?
Some Concepts Of Earth Science For Junior High, Patricia M. Schwirian
Some Concepts Of Earth Science For Junior High, Patricia M. Schwirian
Iowa Science Teachers Journal
The junior high school has been-and still is-the weakest link in the chain of science education. More interest in science is lost during these two or three years than any other period of a child's education. This is grossly unfortunate because children in this age group have the imagination, enthusiasm, and level of maturity which allows them to profit greatly from the excitement and challenge offered in a good science curriculum.
Review - The World Of Living Things, Gerald H. Krockover
Review - The World Of Living Things, Gerald H. Krockover
Iowa Science Teachers Journal
This book is highly recommended for those school systems who are looking for some departmentalization in their junior high science program. It can be easily incorporated into a year biological science program for seventh or eighth grade.
Review - The Origins Of Modern Science, Herbert Butterfield
Review - The Origins Of Modern Science, Herbert Butterfield
Iowa Science Teachers Journal
With engaging wisdom and literary skill, Professor Butterfield illuminates the dynamic growth of science beginning with the impetus theory of the late Middle Ages.
Bscs Vs. Traditional Biology, Mary Janela
Bscs Vs. Traditional Biology, Mary Janela
Iowa Science Teachers Journal
During the school year 1963-64 a study was undertaken at Columbus High School, Waterloo, in order to discover whether the new science programs are more effective in teaching problem solving and critical thinking than are the traditional courses.
Notes On Poetry And Meaning, James Hearst
Notes On Poetry And Meaning, James Hearst
James Hearst Documents
A transcript on the writing and reading of poetry.
Initiating A Science Club, Marianne Schmitz
Initiating A Science Club, Marianne Schmitz
Iowa Science Teachers Journal
A science service club may be initiated in any high school where students signify an interest in its objectives and where a sponsor is available who will organize and promote the science activities and duties of its members.
Volunteer Laboratory Assistants In Bscs Biology Program, Lena Keithahn
Volunteer Laboratory Assistants In Bscs Biology Program, Lena Keithahn
Iowa Science Teachers Journal
With the introduction of B.S.C.S. Biology and its intense laboratory centered approach into our school curriculum, the need for additional h e l p to check equipment and student findings during class sessions became apparent. The use of volunteer assistants proved to be helpful, not only to the instructor, but also to the student by providing him with an opportunity to be of service to the school and also to carry on supervised research work.
A Discussion Of The Economic Basis For Paid Hunting On Farm Land, Wade H. Hamer
A Discussion Of The Economic Basis For Paid Hunting On Farm Land, Wade H. Hamer
Proceedings of the Iowa Academy of Science
Farmers are the nation's principal wildlife managers. They control production, growth, and harvest of wildlife on about 76% of the land. The farmer assigns a personal value to wildlife and regulates its abundance accordingly. His need for game and non-game animals is largely supplied by the amount produced as a by-product of his normal farming activities. The presence of wildlife in numbers greater than the farmer's needs produces conditions that adversely affect the farm business. An example is given of the costs associated with intentional management for wildlife and paid hunting on a typical Midwest farm. The farm of 200 …
Solenochilus Springeri (White & St. John, 1868) From The Pennsylvanian Of Southern Iowa, David L. Mikesh, Brian F. Glenister
Solenochilus Springeri (White & St. John, 1868) From The Pennsylvanian Of Southern Iowa, David L. Mikesh, Brian F. Glenister
Proceedings of the Iowa Academy of Science
The unique Pennsylvanian nautilid Solenochilus springeri is described with reference to material from the lower Cherokee Group (Atokan or Desmoinesian) of Marion County, Iowa, and the Bloyd Formation (Morrowan) of northwestern Arkansas. The species was based originally on a specimen, now lost, from Adair County, Iowa; a neotype is selected from the Marion County collections. The detailed morphology of the pair of dorsolateral spines which characterize mature Solenochilus is described for the first time. These spines, whose length approximates the width of the mature body chamber, are hollow throughout. Each spine originated as a lateral expansion of a prominent dorsolateral …
Meet Our Advertising Editor
Iowa Science Teachers Journal
Although Sister Mary Martina, CHM, has been known to say that it’s a "man's world", she has found an important place in it. As biology instructor at Dowling High in Des Moines, and Chairman of the Science Department there, she is busy almost 24 hours a day.
Midwest, Volume 9, Number 2, Spring 1966 [Download Entire Issue]
Midwest, Volume 9, Number 2, Spring 1966 [Download Entire Issue]
Midwest: A Literary Review
No abstract provided.
Sisters, Jo Siddens
Notes On Prairie Species In Iowa. I. Germination And Establishment Of Several Species, Paul A. Christiansen, Roger Q. Landers
Notes On Prairie Species In Iowa. I. Germination And Establishment Of Several Species, Paul A. Christiansen, Roger Q. Landers
Proceedings of the Iowa Academy of Science
Information is given concerning the germination and early establishment of 30 prairie species. A stratification treatment was included for all seeds, and scarification was also used for the legumes. Germination percentage in greenhouse flats was generally higher than in field plots with variation in germination ranging from 96% in compassplant, Silphium laciniatum, to zero in some such as Rosa suffulta and Gentiana puberula. Seedlings in field plots were subjected to five levels of competition throughout the growing season. Establishment, measured by numbers of seedlings and vigor in September, was most successful on weed free treatments, least successful on cover crop …
The Morphometry Of Lake West Okoboji, Roger W. Bachmann, Richard V. Bovbjerg, John D. Hall
The Morphometry Of Lake West Okoboji, Roger W. Bachmann, Richard V. Bovbjerg, John D. Hall
Proceedings of the Iowa Academy of Science
A total of 2901 depth measurements were made in Lake West Okoboji, Dickinson Co., Iowa in the summer of 1962 using a non-recording echo sounder. These were used to construct a morphometric map of the bottom topography. The area of the lake was found to be 1540 Ha., the volume 184 x 10 to the 6th m³, maximum depth 42.7 m, mean depth 11.9 m and length of shoreline 30.0 km. No changes in the morphometry of the lake could be detected since it was last mapped in 1913.
Helminth Parasites Of Rails And Host-Parasite Relationships Of The Trematode Protechinostoma Mucronisertulatum, Bryce C. Redington, Martin J. Ulmer
Helminth Parasites Of Rails And Host-Parasite Relationships Of The Trematode Protechinostoma Mucronisertulatum, Bryce C. Redington, Martin J. Ulmer
Proceedings of the Iowa Academy of Science
In a survey of 15 soras (Porzana carolina) and 31 Virginia rails (Rallus limicola) collected in Iowa during May-September 1963, Protechinostoma mucronisertulatum was the most frequently encountered trematode of the sora. It does not occur in the Virginia rail. Experimentally-developed metacercariae and adults were obtained and host-parasite relationships studied with special reference to annual incidence of infection in snails. Additional helminths of the sora and the Virginia rail include several representing new host records.
History Of The Iowa Cooperative Wildlife Research Unit, Arnold O. Haugen
History Of The Iowa Cooperative Wildlife Research Unit, Arnold O. Haugen
Proceedings of the Iowa Academy of Science
The history of the Iowa Cooperative Wildlife Research Unit is traced from its beginning as a locally sponsored agency in 1932. It became one of the Wildlife Units when the National program was established in 1935. The late J. N. (Ding) Darling, nationally prominent cartoonist, conceived and negotiated the establishing of the Research Unit program. His belief in the soundness of the research unit idea is witnessed by the fact that he helped to finance the Iowa Unit from his personal funds during its first 3 years of existence. The succession of Unit leaders, and their specialties, the increase in …