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A Description Of An Experiment Involving The Use Of A Modified Drum-Type Spherometer For Measuring The Rate Of Weathering, Darrell D. Young

Iowa Science Teachers Journal

For the teacher who is interested in teaching a unit on weathering, the cemetery may provide unlimited amounts of data. As an exercise in weathering, a measuring instrument was devised and tested by the author on tombstones in the Buffalo area. The instrument used and the results of the test are described as follows.

Science Tomorrow, Robert S. Hansen

Iowa Science Teachers Journal

A few years ago the rate of production of scientists and (not too surprisingly) the rate of production of scientific articles was doubling every ten years. Really new science was coming out at a tremendous rate, generating major new areas such as solid state physics, molecular biology, radio-astronomy, and major breakthroughs such as the cracking of the genetic code, the discoveries of the transistor effect, of pulsars, and quasars, of techniques of stereospecific syntheses, of ultrasensitive methods of compound detection, identification, analysis, and structure determination, and of new fundamental particles in profusion.

Cover - Ias & Ists Officers, Directors And Chairpersons - Ist Journal Information - Table Of Contents

Iowa Science Teachers Journal

No abstract provided.

Open Letter To Science Teachers: Before You Lock The Door, Delma E. Harding

Iowa Science Teachers Journal

Before closing textbooks and locking classroom doors for the summer, check on several things to help make your teaching more coordinated and meaningful when fall comes. Make out a tentative schedule for next year's classes. Decide what units to teach and approximately what length each is to be. Include a list of materials you plan to use for each unit. This means chemicals, slides, demonstrations, experiments, models, audiovisual aids, tape recordings, glassware, and anything else you expect to use. Have everything ordered or available for use, so there are no disappointments or holdups when you start teaching again.

Innovation In Science Education In Australia, Richard P. Tisher

Iowa Science Teachers Journal

There are many similarities in the type of science education provided in Australia and in the United States. Teaching methods, for example, range from the traditional textbook-oriented approach to a laboratory, inquiry-oriented one. Also similar issues related to science education are being debated. Two areas of concern are the preservice education of science teachers and curriculum development. It is in this last mentioned area that the greatest innovation has occurred.

On The Trail Of The Decadent Polyglot, W. F. Hollander

Iowa Science Teachers Journal

At the risk of beating a dead horse to death, I desire to add my lick. Students are not adequately trained to communicate in science, and the objective-type test is not helping. When linguistic fluency is equated with drooling in one's beard, and semantics is some sort of erotic deviation, one must not be surprised to learn that etymology is the study of incests. Most of the kids have become aware that mini means small, and that lunar means moon, and we should be grateful for such small advances, but the slippage in other areas is less cause for a …

Professor Says Marijuana Should Not Be Legalized

Iowa Science Teachers Journal

Grass, pot, jive, mary jane, or Texas tea. By whatever name you know it, marijuana should not be legalized, claims Dr. Joseph Benforado, assistant clinical professor of medicine and a physician at the University of Wisconsin Health Center.

Top Of The Decade

Iowa Science Teachers Journal

A listing of notable events of the past decade in medicine, education, science, and the environment.

Back Cover

Iowa Science Teachers Journal

No abstract provided.

Resume Of Physics Section Meeting During Fall I.S.E.A. Convention Program, Henry J. Biere

Iowa Science Teachers Journal

The two major topics dealt with in the physics section are of major concern to physics teachers.

Science And Social Change, Milton O. Pella

Iowa Science Teachers Journal

The meager period of time we call "ours" in the vast continuum from creation to dissolution has but one constant and that constant is change; our time is one of unprecedented change.

If Cyclamate Is Banned, Should Hundreds Of Other Products Be Removed From Market?

Iowa Science Teachers Journal

If cyclamate is banned on the basis of the few tests performed so far, then hundreds of other products should also be removed from the daily market. This is the opinion of Drs. Stanley L. Inhorn, director of the Wisconsin State Laboratory of Hygiene, and Lorraine F. Meisner, instructor of preventive medicine at the University of Wisconsin.

Identifying And Growing Biochemical Mutants Of Arabidopsis Thaliana, Sujit K. Dhar

Iowa Science Teachers Journal

Beadle and Tatum (1945) irradiated bread mold fungus, Neurospora spores, with X-ray and isolated biochemical mutants by their inability to grow in minimal medium. They identified the defective pathways by finding a particular amino acid, vitamin, or nucleotide which, being added to the medium, remedied the defect.

Back Cover

Iowa Science Teachers Journal

No abstract provided.

Open Letter To Science Teachers: U.S. Army-Iowa Science, Engineering, And Humanities Symposium, Ronald D. Townsend

Iowa Science Teachers Journal

U.S. Army-Iowa Science, Engineering, and Humanities Symposium - In September, 1969, letters announcing this year's symposium and preliminary applications were sent to high school principals in Iowa and western Illinois. This year through the cooperation of the Iowa Academy of Science, initial letters and applications were also sent directly to the science teachers whose names were on the academy's mailing list. Included in the letter was a brief sketch of symposium activities and goals. The science teacher applications included nominations for student research papers and nominations for student symposium participants other than those applying to give papers.

Far-Nix And Lar-Nix Diesected, Charles J. Ellis

Iowa Science Teachers Journal

High school teachers do a wonderful job. This observation is of long standing and particularly true when one considers the "handicaps" under which these teachers operate. They not only must give of themselves and of their time, but each must be the disciplinarian, father-confessor, and big-buddy of the students. They must cope with school boards and parents, take tickets and usher! For all their expertise in these many areas, we on the "outside" thank these teachers.

Toxin Production By Isolates Of Ceratocystis Ulmi, Marcia V. Angell, Harold S. Mcnabb Jr.

Proceedings of the Iowa Academy of Science

Cuttings of two elm species, Ulmus pumila and U. hollandica 'Belgica', were used to assay toxin production by nine isolates of Ceratocystis ulmi representing collections from Asia, Europe, and North America. After 17 days of fungus growth in liquid culture, filtrates were collected and bioassayed by visual symptom expression over an approximate 10-hour period. A variation in toxin production was evident. One of the isolates from the Netherlands produced a low toxin titer. The other isolate from the Netherlands and the one from Asia produced highly significant symptoms on the resistant Siberian elm shoots and an Iowa isolate's filtrate reaction …

The Distribution Of Climatic Factors In Iowa And Their Influence On Geomorphic Processes, Richard A. Karsten, Sherwood D. Tuttle

Proceedings of the Iowa Academy of Science

This paper undertakes to evaluate effects of climate upon geormorphic processes in Iowa. Iowa's climate is described as humid continental long summer, with three-fourths of the annual precipitation falling between the end of March and the beginning of October. In almost all climatic factors, the variation trends or changes from the north-northwest toward the south-southeast. Using the two parameters of mean annual temperature and mean annual rainfall for 119 stations in Iowa, a scattergram was constructed. Statistical analyses of the data suggest the presence of three microclimatic zones or regions in Iowa--northern, central, and southern. Comparisons of climatically controlled aspects …

A Longitudinal Study Of The Interests Of Veterinarians, Susan I. Ballou, Jonathan E. Alsip, Thomas E. Hannum

Proceedings of the Iowa Academy of Science

The newly-revised SVIB was restandardized on 362 members of the Iowa Veterinary Medical Association. Ninety-eight of these veterinarians in this 1966 criterion group were also members of the 1949 criterion groups when the SVIB veterinarian scale was first established. The answer sheets from both the 1949 and the 1966 criterion groups were scored by the newly devised scoring key and a comparison made of score changes over this period. In addition the response-choice frequencies to the items common to both the old and the new SVIB by the longitudinal group were determined and significant shifts were noted and reported in …

The Ias Bulletin, V4n1, January 1970, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- Officers, Directors, and Section Chairmen, 1969-1970
--- Section Program Notes (Incomplete)
--- Report and Recommendations from the Editor
--- Results of Biological Sciences Program Planning Survey
--- Iowa Academy of Science Visiting Scientist Program
--- Membership in the Academy
--- Natural History Area to be Developed
--- Educational Conference on Pollution
--- Report from the Statewide Biology Articulation Committee
--- Constitution Revision Committee Named
--- AAAS Research Grant Awards Announced
--- Retired Fellow Active
--- Need for an Academy Committee on Technical Education
--- NSF Officers Funding to Develop Academies' Role in State Scientific Advisory Capacity …

Unusual Ph.D. Program Supported

Iowa Science Teachers Journal

Support of an unusual graduate program in science and mathematics education is provided by a National Science Foundation grant of $29,700 awarded today to the University of California at Berkeley. Known as "SESAME" (Search for Excellence in Science and Mathematics Education), the recently established program leads to a Ph.D. Its aim is to offer students the opportunity to combine advanced training in one of the natural sciences or mathematics with the pursuit of central interests in science education.

Warning Issued Against Universal Use Of Lasers

Iowa Science Teachers Journal

Enthusiasm for use of lasers in air pollution studies is being tempered by evidence that they should not be regarded as a universally useful yardstick, a University of Wisconsin physicist says.

1970 Uni Quarterly, V1n2 [Winter 1970], University Of Northern Iowa

UNI Yearbooks

The student yearbook of the University of Northern Iowa.

Science Teachers' Knowledge Of Sound Theory, Jerry Underfer

Iowa Science Teachers Journal

J. W. Warren has written a book recently which gives a critical review of mistaken ideas which are conveyed by physics textbooks and overlooked by physics teachers. Although Warren doesn't consider the area of sound to any extent, the situation is analogous. As he points out, errors and misleading material which are published for years while books pass through several editions gravely mislead students.

Parks Suspend Entrance Fees Pending Congressional Action

Iowa Science Teachers Journal

The Department of the Interior's National Park Service has suspended entrance fees to park areas normally entered by automobile pending Congressional action on restoring the Golden Eagle Passport, an annual fee system which expired last March 31.

1970 Baseball, University Of Northern Iowa

Athletics Media Guides

Contents:

--1970 Schedule
--Head Coach J.D. Anderson
--Assistant Coach Ken Green
--1969 Results
--1970 UNI Baseball Roster
--Defense the Key, Hitting the Problem for Northern Iowa in 1970
--1969 Northern Iowa Baseball Statistics
--1969 All NCC Team
--1969 Individual Leaders
--UNI All-Americans
--Panthers in the Pros
--Northern Iowa Baseball Records

Wrestling 1969-70, University Of Northern Iowa

Athletics Media Guides

Contents:

--1969-70 Wrestling Schedule
--1968-69 Results
--Wrestling Coach Chuck Patten NCAA Coach of Year
--Reiland Leads Panther Tornado Troops
--The Panther Look
--UNl's National Wrestling Champions
--East-West All-Star Wrestling
--All-Time Wrestling Results
--From Cheney to Osboe...UNl's 15 National Champions
--UNI Wrestling Roster

Cover - Table Of Contents

Proceedings of the Iowa Academy of Science

No abstract provided.

Failure Of Thiocyanate To Influence The Flux Of Sodium Through The Isolated Frog Gastric Mucosa, C. Adrian M. Hogben

Proceedings of the Iowa Academy of Science

Isolated stomachs from mammals showed substantial active absorption of sodium (Am.J. Dig. Dis. 14:221-238, 1969) in contrast to isolated frog gastric mucosa. Could the difference have been due to a "micro-environment" in the latter preparation based on fine structure features that maintained high H-ion concentration at the site of active transport? To answer this, H-ion secretion was inhibited in frog gastric mucosa with 15 mM thiocyanate. Unidirectional fluxes of sodium were not materially affected. These results cast doubt on a possible depression of active sodium absorption by a high H-ion concentration in the "microenvironment" of the isolated …

A Physio-Chemical Analysis Of The Headwaters Of The Little Sioux River, Milbert H. Krohn

Proceedings of the Iowa Academy of Science

The magnitude and seasonal variation of 11 selected physiochemical characteristics at four collection sites in the headwater region of the Little Sioux River are reported for a 12-month period from March 1969 through February 1970. Little variation was found between study sites for given sampling times.