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Histology Of The Embryonic Chick Mandible Following X-Irradiation, Barbara Ann Bailey Walton

Proceedings of the Iowa Academy of Science

The sensitive period for the induction by x-irradiation of reduced mandibles in chick embryos was determined to be during the 5th day of incubation. Variations in mandibular anomalies can be correlated with the incidence and frequency of cell deaths. As exhibited by control mandibles, cell deaths around the distal ends of Meckel' s cartilages through the 7th day may aid distal cartilage elongation. The variety of anomalies resulting from teratogenic doses is due, in part, to differences in sensitivity between embryos and their ability to recover from radiation damage. Bone development (initial ossification) in experimental embryos was retarded from 12 …

Editorial Board

Proceedings of the Iowa Academy of Science

No abstract provided.

The Decapod Crustaceans Of Iowa, Gary S. Phillips

Dissertations and Theses @ UNI

Between 1 March 1977 and 30 September 1978, a survey was made of the species of decapod crustaceans present in Iowa. During this time period all of Iowa's 99 counties were surveyed. A total of 2390 specimens representing 500 lots were collected from 492 different sites in Iowa. Specimens were collected by seining, dip netting, hand collecting, excavation, and trapping. An additional 1944 specimens were examined from existing collections. Seven species of Cambaridae (Cambarus diogenes diogenes Girard, Orconectes immunis (Hagen), Orconectes iowaensis Fitzpatrick, Orconectes rusticus (Girard), Orconectes virilis (Hagen), Procambarus acutus acutus (Girard), and Procambarus gracilis (Hagen)) and one …

A Case Study For The Governor's Science Advisory Council: The Nitrite Controversy, Robert W. Hanson

Proceedings of the Iowa Academy of Science

The Governor's Science Advisory Council (GSAC) was established by executive order in April 1977 to provide objective scientific advice and information to the Governor or the state agencies. A major problem in science advising to government at all levels is the credibility of information sources. The controversy concerning a possible ban on the use of nitrite in the curing of meat products provided an opportunity for the GSAC to demonstrate its potential as an unbiased representative of the scientific community.

Chromosome Stability And Regenerative Potential Of Anther And Seedling Callus Of Arabidopsis Thaliana: Effect Of Age, Race And Induction Medium, Kenneth A. Feldman

Dissertations and Theses @ UNI

An investigation of the effects of factorial combinations of race, explant, induction medium and age on chromosomal stability and regenerative ability of Arabidopsis thaliana callus was performed. Regenerative ability of primary and subcultured callus from all treatments was also examined. Somatic counts were performed on a sample of calluses from factorial combinations of two explants (anther and seedling) and two races (WS and HM) induced on three induction media (DBM-1, ACM-1 and PG-1) and subcultured onto maintenance medium (DBM-2-M) after 30, 60 and 90 days. At each subculture, the mean chromosome number for each factorial treatment was close to the …

The Alumnus, V63n4, December 1978, University Of Northern Iowa Alumni Association

The Alumnus

Inside This Issue:

-- Homecoming/Reunions 1978 Mission: Celebrate Change
-- Campus Avenews
-- Young teaching grads say personal satisfaction most important
-- Focus on Faculty
-- Frank Merchant - the man behind the scholarships
-- Lawther Hall's lounge elegance remains
-- Alumni Avenews
-- Director's MedLee
-- Class Notes

The Development Of A Low Cost Microcomputer, Jerry G. Farrell

Graduate Research Papers

It is the purpose of this study to: (1) review all available literature on the microprocessors; (2) study the function and application of the microcomputer; (3) become familiar with the programming techniques used in the microcomputer; (4) design and construct a microcomputer system; (5) develop an instructional unit around the functions and application of the microcomputer; and prepare a written report on the microcomputer system.

Uni Schedule Of Classes, Fall 1978, University Of Northern Iowa

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the University of Northern Iowa.

Summer Commencement [Program], July 28, 1978, University Of Northern Iowa

UNI Commencement Programs

The program of the commencement ceremonies, including a list of institutional leadership, a list of the departments by college, awards given at the ceremonies, and a list of undergraduate and graduate degree candidates.

Uni Schedule Of Classes, Summer 1978, University Of Northern Iowa

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the University of Northern Iowa.

Spring Commencement [Program], May 13, 1978, University Of Northern Iowa

UNI Commencement Programs

The program of the commencement ceremonies, including a list of institutional leadership, a list of the departments by college, awards given at the ceremonies, and a list of undergraduate and graduate degree candidates.

The Alumnus, V63n2, May 1978, University Of Northern Iowa Alumni Association

The Alumnus

Inside This Issue:

-- Price Lab School - one big package of success
-- Campus Avenews
-- A 40-hour week? They've never heard of it
-- From old to new - Moving into the Speech/Art Complex
-- Recollections on math teaching careers
-- Alumni Avenews
-- Class Notes
-- Director's MedLee

Abstracts Of Contributed Papers, Iowa Academy Of Science [90th Meeting], April 21-22, 1978, Iowa Academy Of Science

Iowa Academy of Science Documents

Presentation abstracts from the annual meeting of the Iowa Academy of Science

The Annual Meeting Of The Iowa Academy Of Science April 21-22, 1978 [Program, 90th Meeting], Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

Uni Schedule Of Classes, Spring 1978, University Of Northern Iowa

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the University of Northern Iowa.

The Endangered And Uncommon Amphibians And Reptiles Of Iowa - Salamandars, James L. Christiansen, Russell R. Burken

Iowa Science Teachers Journal

Iowa has 23 amphibian and reptilian species whose known populations or ranges within the state are so small as to justify their inclusion in the state's endangered or threatened list (Roosa, 1977). This paper is intended to inform the Iowa scientific teaching community of the plight of these species and to recruit help in gathering information relative to their distribution. Most of the information presented here has been accumulated by Christiansen and Bailey (manuscripts in preparation or in press) in their work on the amphibians and reptiles of Iowa.

Mice

Iowa Science Teachers Journal

If a pair of field mice can produce six offspring 17 times a year (and they can) then in just a few months, two mice could become millions.

Free Materials

Iowa Science Teachers Journal

Available from Educational Materials, Chevron Chemical Company.

Iowa Science Teachers Fall Conference

Iowa Science Teachers Journal

Iowa Science Teachers Fall Conference, Co-sponsored by NSTA and IAS.

Organizing A Rock And Mineral Club (Part I), Ron Bonstetter

Iowa Science Teachers Journal

This is Part I of a collection of ideas designed to promote the formation of rock and mineral clubs. Such programs are appropriate for interested individuals from upper elementary grades through high school. A broad range of interests and skills are suggested to leave room for the creativity of prospective club advisors. Membership in clubs of this nature provides many opportunities for the development of interests, hobbies and careers. The desire to pursue rock and mineral studies is developed and encouraged by creating an informal setting where individuals can identify and fulfill their interests. A successful club allows its members …

Ists Bus To Milwaukee Nsta Regional Convention

Iowa Science Teachers Journal

Why drive to the Regional NSTA Convention when you can conserve energy and relax with your colleagues on a chartered bus?

Honors To Iowans: Aas Convention Participants; Outstanding Science Teacher Awards; Idpi Awards

Iowa Science Teachers Journal

Frank Starr and Hjalmer Peterson were recognized for contributions in science education by the Iowa Academy of Science at the 1978 annual spring meeting of the Iowa Academy of Science.

New Nsta Publications

Iowa Science Teachers Journal

The titles can be obtained by writing the National Science Teachers Association.

Officers, Iowa Academy Of Science; Editorial Staff ; Officers & Regional Directors, Iowa Science Teachers Section; Advisory & Technical Review Boards

Iowa Science Teachers Journal

No abstract provided.

Cover - Front Matter - Table Of Contents

Iowa Science Teachers Journal

No abstract provided.

Innovation In Science Education

Iowa Science Teachers Journal

Innovation in Science Education-World-Wide, by Albert V. Baez, has been published by Unesco Press with the purpose of promoting improvements in science education-worldwide, but particularly in developing countries.

What The Law Allows

Iowa Science Teachers Journal

Teacher liability is a topic of current interest. Listed below are some cases in which science teachers have been sued for liability. Assuming that you are a member of a jury and have been given all relevant facts, which cases would you award a verdict of guilty?

Pcb's, Erwin Richter

Iowa Science Teachers Journal

PCBs, or polychlorinated biphenyls, is a general name applied to compounds consisting of two benzene rings joined together, with several to all of the remaining hydrogen atoms substituted with chlorine. Because of this, formulations of PCB's vary in the percentage of chlorine with the sample taken.

Consumer Science: A Viewpoint, Donald J. Schmidt

Iowa Science Teachers Journal

As a member of the Iowa Academy of Science and a former Iowa teacher, I know that science teachers in Iowa are constantly striving to make their classes more interesting and meaningful to students. I would like to share with you some ideas generated by a group of twenty-three secondary school science teachers at Fitchburg State College in a summer workshop dealing with consumer science education.

A Chemistry Tip

Iowa Science Teachers Journal

In the CHEMS laboratory reaction of hydrochloric acid with Mg ribbon, addition of some food coloring to the acid solution makes gas volume easier to read.