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Test 1197: Allis-Chalmers 7060 Ps Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT GENERAL CONDITIONS Each tractor is a production model equipped for common usage. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operator station. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures must conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crankcase is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The fuel …

Test 1198: Kubota L 285 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT GENERAL CONDITIONS Each tractor is a production model equipped for common usage. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operator station. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures must conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crankcase is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The fuel …

Test 1210: Case 1410 Power Shift (David Brown 1412 Hydra-Shift) Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT GENERAL CONDITIONS Each tractor is a production model equipped for common usage. Power consuming accessories may be disconnected only when the means for disconnecting can be reached from the operator station. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures must conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crankcase is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The fuel …

Biological Diffusion Processes, Allen R. Killpatrick, Norman J. Chonacky

Physical Science Modules for Bioscience Students

What happens in the lung is that air meets blood. Figure 1 shows the lung's architecture. Focus your attention upon the smallest scale structures which are the termini of the air passages. These are the alveolar air sacs or, simply, alveoli. The inhalation/exhalation actions of the lung, alternately, flood these alveoli with atmospheric air and expel its oxygen-poor/carbon dioxide-rich replacement. Figure (2a) depicts, in a somewhat simplified manner, these alveoli with their appended venous blood suppliers, the pulmonary arteries. Figure {2b} shows the structure of the blood distribution system over a small, typical portion of the alveolar surface in much …

Fundamental Energy Processes Of The Human Body, Thomas C. Campbell, Norman J. Chonacky

Physical Science Modules for Bioscience Students

Within the hand that holds this sheet of paper there throb thousands of engines; each with its own fuel requirements; each yielding varying amounts of work, heat, and waste output. Each is a cell in your body.

Of course, these cells are not completely independent. They share in a society, but especially in an economy, of the whole organism. This economy does not trade dollars of differing currencies; rather, its commerce is in energy of differing forms.

A particularly important asset is thermal energy. It is the natural by-product of the various energy conversion processes, the biochemical reactions within the …

Thermal Regulation Of The Human Body, Thomas C. Campbell, Norman J. Chonacky

Physical Science Modules for Bioscience Students

The supervision of the complicated task of managing your body's energy resources is laid to many ingenious systems, both chemical and physical, in your body. One group of such control systems keeps the temperature of the body relatively stable despite a wide range of variety and intensity of the energy conversion and utilization processes which occur there.

For example, increase in thermal stimulation of body temperature sensors may result in secretion of water by the sweat glands which in turn cools the skin surface and increases the heat outflow. In another scenario, thermal stimulation can initiate stricturing of certain blood …

Notes On Science Teaching - 2, Leonard H. Sibley

Iowa Science Teachers Journal

How are you going to teach? The cone of experience.

Iowa Academy Of Science Celebrates Centennial Anniversary Of Founding, Robert W. Hanson

Iowa Science Teachers Journal

April 17-19, 1975, marks the observance of an important historical event in Iowa, for it was in 1875 that Charles E. Bessey and a handful of scientists and medical men conceived the original Iowa Academy of Science. One hundred years have produced fantastic changes in life in Iowa, and the Academy of today has almost forgotten its heritage. It has grown from a small fellowship of men dedicated to furthering scientific work in Iowa to 1,400 members-a sizable cross section of the entire scientific community representing pure and applied research, conservation activity, engineering, economics and all levels of education and …

Iowa Academy Of Science Officers & Directors; Standing Committee Chairmen; Section Chairpersons; Editorial Review Board

Iowa Science Teachers Journal

No abstract provided.

Cover - Front Matter - Table Of Contents

Iowa Science Teachers Journal

No abstract provided.

Environmental Science Units

Iowa Science Teachers Journal

Additional information concerning the following teaching units may be obtained from the Minnesota Environmental Sciences Foundation, Inc.

Nsta Bicentennial Essay Award

Iowa Science Teachers Journal

As part of its Bicentennial Year activities, the National Science Teachers Association is sponsoring a prize competition for papers on the history of science education in the United States.

The Need For Nitrogen, Ralph Hardy

Iowa Science Teachers Journal

Exacting a toll of death and suffering, the world's food supply trails population growth. To help bridge this gap, scientists are probing a uniquely-talented group of bacteria. This is Stuart Finley for Men and Molecules, presented by the American Chemical Society. Today, a report on the progress and promise of nitrogen fixation.

Student Philosophy In Science Class, Owen Primavera

Iowa Science Teachers Journal

As a science teacher I know that facts are vital parts of teaching chemistry or biology, and that the better students understand chemical and biological systems the better they will understand how organisms function. But more than facts seems to be needed to teach ecology.

Trends In Secondary Science Enrollments In Iowa, Gary Downs

Iowa Science Teachers Journal

Enrollment data were collected from the district administration for the five reported years starting with the 1968-69 school year. The data for the 1973-74 school year were collected at the school level. Collection at the school level should provide a more representative data bank for the academic programs. All the science offerings were grouped into the following seven categories: biology, chemistry, earth science, enrichment science, general science, physical science, and physics. It is interesting to note that in the 1968-69 data collection only 19 different courses were reported. In the succeeding years, 25, 56, 71, 74, and 96 were reported …

Future Shock, Doris A. Simonis

Iowa Science Teachers Journal

A short poem by Doris A. Simonis

You Scream, I Scream

Iowa Science Teachers Journal

Artificial food colors and flavors found in such food as ice cream may be a cause of hyperactivity in children.

A Computer Assisted Environmental Education Resource Program, Sara K. Smerud, Gary Thomas, Tim Keenan, Dale Nimrod

Iowa Science Teachers Journal

Northeast Iowa is an exceptionally beautiful and unique region. Environmental education in the schools and communities of this area is a vital factor in enabling citizens to take a reasoned approach to the conservation and management of this region. Two observations precipitated the action which resulted in the project described in this paper. The first was that the local resources were vulnerable to being utilized in a potentially harmful manner and secondly, teachers did not seem to be taking full advantage of their local resources in their classroom instruction.

The Bicentennial

Iowa Science Teachers Journal

The Bicentennial will be celebrated in Iowa classrooms in many ways. By looking back on past scientific achievements, students may be better able to understand and appreciate the present and predict the future.

Algae And Energy, James J. Hungerford

Iowa Science Teachers Journal

The extent to which algae contribute to human welfare is often forgotten, ignored or unappreciated. Many types of algae serve as bases in commercially prepared foods and condiments. Algal products are used in cosmetics, textiles, pharmaceuticals and paints. In Asia, algae are often mixed and served with rice and fish to supplement the human diet. In coastal areas of the world, kelps are often chopped as food for livestock. The alga Poryphyra is cultivated in Japan to supply a 65 million pound annual market.

Science Foundations: A Science Program For The Non-Science Student. Technical Report No. 4., James Shymansky

Educator Preparation & Leadership Faculty Works

No abstract provided.

Engineering At Gettysburg College, William C. Darrah

College History Publications

This little volume narrates the story of engineering instruction at Gettysburg College, particularly of the Engineering Department that functioned from 1912 to 1940. It includes also an account of the apparently first venture in engineering by an American liberal arts college, undertaken during the brief association of the renowned Herman Haupt with Gettysburg College between 1837 and 1847.

Time dims our memories. Although there are more than fifty living alumni who were graduated from the Engineering Department, many Gettysburgians are unaware of its existence and accomplishments. The purpose of this story is to place on record a significant aspect of …

Natural Areas For Community Colleges: Their Role In Environmental Education, John Henry Gerdes

Masters Theses

No abstract provided.

Special Report On The Use Of Animals In School Science Projects

Special Reports

When 28 students are rewarded in national competition for projects that caused pain to animals, it is clear that humanitarians still have a great deal of work ahead of them.

The Preparation Of Junior-High Science Teachers In The Public Schools Of Southwestern Michigan, George A. Faber

Dissertations

No abstract provided.

A Comparison Of The Contractual Approach And The Traditional Method For Teaching High School Biology, Bernard G. Fecher

Masters Theses

No abstract provided.

Annual Report 1973-74 And Membership Directory, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Committee Membership 1973-74 ... 1-3
Report of the Executive Secretary ... 4
Minutes of the Annual Business Meeting ... 20
Report of the Treasurer ... 32
Report of the Annual Meeting Committee ... 34
Report of the Editor of the Proceedings ... 35
Report of the Editor of the Iowa Science Teachers Journal ... 36
Report of the Librarian ... 37
Report of the Finance Committee ... 38
Report of the Elections Committee ... 40
Report of the Membership Committee ... 42
Report of the Publications Committee ... 44
Report of the Recognition and Awards Committee ... 46
Report …

Abstracts Of Papers Scheduled For Presentation At The 86th Session Of The Iowa Academy Of Science, April 19-20, 1974, Iowa Academy Of Science

Iowa Academy of Science Documents

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

Program: 86th Annual Session Of The Iowa Academy Of Science, April 19-20, 1974, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

Historical Sketch Of Tractor Testing, Nebraska Tractor Test Lab

Nebraska Tractor Tests

A historical sketch of Tractor Testing at the University of Nebraska-Lincoln. Lester F. Larsen. Engineer in charge since 1947, visits with George S. Round, Professor of Agricultural Communications at the University about individuals who made contributions to the successful program. He also reports on 1,155 tests conducted up to January I, 1974, and contrasts tractors of 1974 with those of 20, 30 or more years ago . Testing fee schedules are reviewed in a self-supporting project favorably known round the world.