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The Ias Bulletin, V3n5, November 1969, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- Officers, Directors, and Section Charimen, 1969-1970
--- Spring Program Planning
--- Board Meeting Bombshell
--- What About the Proceedings Format?
--- Speakers' Bureau Project Dropped
--- Visiting Scientist Program Still Alive
--- Excellence in Teaching Awards
--- Long Range Program Planning in the Biological Sciences
--- Symposium Volume of Archeological Papers Being Prepared
--- Academy Representatives to Attend Academy Conference in Boston
--- Constitution Revision
--- Financial Condition of the Academy
--- Academy Membership is a Bargain
--- News from Other State Academies
--- Membership in the Academy
--- Iowa Academy og Science Visiting Sceintist Program …

Quasilattice Interpretation Of The Thermodynamic Properties Of Mixing Of Binary Alkali-Metal Systems, J. Bevan Ott, J. Rex Goates

Faculty Publications

Quasilattice theory was applied to heats of mixing in the six systems formed from the binary combinations of Na, K, Rb, and Cs. The alkali-metal systems are particularly well suited for a critical test of the quasi-crystalline assumption since the theoretical model for these systems is relatively simple and the thermodynamic data are fairly complex. Very good fits of the heat-of-mixing data were achieved by assuming that the larger atom in the binary system covered multiple sites on the quasilattice. The values of the empirically determined constants appear to fit the physical significance accorded to them by the quasilattice model. …

The Ias Bulletin, V3n4, September 1969, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- Officers, Directors, and Section Chairmen, 1969-1970
--- New Members Since May First
--- Membership by Section Interest
--- Board Meeting Scheduled
--- Geology Monograph "Water Resources of Iowa" to e Available Soon
--- Grant Received from NSF for Junior Academy Work
--- Academies of Science and Science Education
--- Activities of NSRA of Interest to Academy Members
--- Member Wants Critical Analysis of his Trisection
--- All High School Science Teachers in Iowa now on Information Mailing List
--- Several Vacancies Left by the Departure of One Active Member
--- Local Arrangements Named for April 1970 …

A Study Of Folic Acid Dependent Reactions In Bovine Brain, Dillard Spencer Broderick

Theses and Dissertations

The enzymatic interconversion of serine to glycine and N5, N10-methylene tetrahydrofolate to N5 -methyl tetrahydrofolate have been studied in a cell-free system derived from bovine brain. A partial purification of serine transhydroxymethylase and N5, N10 -methylene tetrahydrofolate reductase has been achieved by ammonium sulfate fractionation, protamine sulfate fraction, and by various column chromatography procedures. The two enzymes studied catalyze sequentially the reductive transfer of the hydroxymethyl group of serine to the N5 position of tetrahydrofolate forming N5 -methyl tetrahydrofolate. The products of these reactions were assayed by the incorporation of C14 from a one-carbon precursor i.e., L-beta-(C14)-serine, or N5 -methyl …

The Effects Of Herbicides On Three Soil Inhabiting Blue Green Algal Species, Lee C. Darlington

All Master's Theses

The object of this study was to examine the effects of varying concentrations of 2, 4-D, Dalapon, and Tordon on the growth of several nitrogen-fixing blue-green algal species obtained from soil samples and grown under culture conditions in the laboratory.

The Effect Of Removing The Crevicular Epithelium Upon Canine Tooth Replantation, Leon A. Leonard

Loma Linda University Electronic Theses, Dissertations & Projects

The nature of epithelium and the remarkable facility with which it aggressively covers granulation tissue, suggests that removal of the sulcular epithelium surrounding the extraction wound of a tooth to be replanted could promote reattachment of the periodontal tissues at a more nearly ideal coronal level. To investigate this hypothesis twenty mature teeth in five mongrel dogs were experimentally replanted. One half of them were replanted in alveoli around which the crevicular epithelium had been removed, the remaining teeth without creviculoectomy acting as controls. Animals were euthanized at one, two, three, five, and sixteen weeks. After clinical evaluation of the …

Study To Save Block Island, Designer's News, May 19,1969, Students Of Risd, Risd Archives

Ecology and Environment

RISD Landscape Architecture Study to Save Block Island Article from Designer's News, May 19, 1969 student newspaper.

The Ias Bulletin, V3n3, May 1969, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- From the Editor
--- Attendance at 81st Session
--- Committee on Ecological Disturbances Continued
--- 1970 Plans Already Underway
--- New Corporate Member
--- Note to Visiting Scientists
--- Another Fall Articulation Conference Planned
--- ISTS Regional Meetings to be Featured in Science Education News
--- New Sections Being Considered
--- Members Urged to Support the Academy through Contributions
--- Fiscal Year Changed
--- Status of the Constitution Revision
--- Nomination of Fellows is in Order
--- What some of the Other State Academies are Doing
--- Newsletter to Have New Format
--- Our New President …

Iowa Junior Academy Of Science: The Thirty-Seventh Convention, April 18-19, 1969, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

The Eighty-First Session Of The Iowa Academy Of Science And The Thirty-Seventh Convention Of The Iowa Junior Academy Of Science, April 18-19, 1969, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

The Ias Bulletin, V3n2, March 1969, Iowa Academy Of Science

IAS Bulletin

In this issue:

--- Constitution Revision
--- Academy Conference to Conduct Editors' Workshop
--- Features of the Eighty-First Session April 18, 19 at University of Northern Iowa, Cedar Falls
--- Motel Information for the April Meeting
--- Reservations Required for Academy Banquet
--- Section Program Highlights
--- Revised Constitution 1969
--- Revised Bylaws

Soil And Plant Water Studies On Wheat Summary Of Results 1969/70, D Tennant

Experimental Summaries - Plant Research

Location

Trials were carried out within a radius of 5 miles of

Tammin on the properties of Messrs P. York and B. Nottage.

Sites represented deep sand, sandy loam, sand/clay and grey

clay soil types.

Stomatopod Crustacea Of The Western Atlantic, Raymond B. Manning

Studies in Tropical Oceanography

No abstract provided.

The Agricultural Potential Of Owingup Swamp. 1. Soil Survey Of Owingup Swamp. 2. Comparison Of Owingup And Grasmere Swamps, L T. Jones, C V. Malcolm, James P. Fallon, Department Of Agriculture And Food, Western Australia

Technical Bulletins

The two swamps, Owingup and Grasmere are practically identical with regard to soil conditions. Grasmere swamp however has been cleared and used for agriculture for some 60 years while Owingup swamp is as yet unalientated. Soils on both swamps consist of mainly organic diatomaceous clay. Findings of the survey indicate that some 2000 acres at Owingup swamp would be suitable for vegetable growing following clearing and draining.

Time Of Application Of Solid Nitrogen Fertilisers., M G. Mason

Experimental Summaries - Plant Research

The current recommendations for time of application of soild nitrogen fertilisers such as urea, ammonium nitrate and sulphate of ammonia are:

Zone A: These fertilisers should be applied as close to seeding as possible.

Zone B: As for zone A except on very sandy soils which are very prone to leaching, where application can be delayed 2-3 weeks.

Zone C: Applications should be delayed about 3 weeks after seeding.

The Fate Of Nitrogen In N-P Compound Fertiliser Urea And Ammonium Nitrate., M G. Mason

Experimental Summaries - Plant Research

Trial: 69WH4

Aim of Trial : to follow the movement of nitrogen in the soil and to follow the chemical changes of the nitrogen applied as N-P compound 24 :24, urea and ammonium nitrate. Also to follow the pattern of uptake of this nitrogen by the plants. To compare the effects of these fertilisers on the yields of wheat and to relate differences to changes in the nitrogen fractions in the soil and to nitrogen and phosphorus in the plants.

Soil And Tissue Testing For Potassium., Department Of Agriculture And Food, Western Australia

Experimental Summaries - Plant Research

No meaningful conclusions can be drawn until the multiple regression analysis comparing soil and plant parameters with level of response has been completed. Similarly it is extremely dangerious to extrapolate results obtained from any one experiement in a particular district to the general farm situation. In addition these results represent only 1 rather atypical season and so need to be verified by additional calibration trials. in 1973 (40) and 1974 (20).

List Of Experiment Programmes 1969 -1970, Department Of Agriculture And Food, Western Australia

Experimental Summaries - Plant Research

T. Albertsen, maintenance phosphorus and sulphur, continuous cropping with NPS, sulphur status in high rainfall areas. J. Cripps, (jointly with B Luren), experiments at Stoneville research station and on growers’ properties. A.C. Devitt, replacement of legume pasture, evaluation of Midland b, competitive ability of some sub clovers. Evaluation of Dinninup 3. Evaluation of Tornafield medic 1967. Evaluation of some medics 1968. Evaluation of Northam A crossbreds. Effect of phosphate on growth of medics 1968. Effect of Urea on growth of subclover on new land. Effect of Urea on established legume pastures. Pasture species establishment and persistence. Evaluation of pasture species …

Shed Lambing In The Esperance Environment, T Marshall, F. F. Dixon

Journal of the Department of Agriculture, Western Australia, Series 4

Neonatal lamb mortality is often high in Western Australia and losses as high as 33 per cent, have been recorded on private properties in the Esperance area. Surveys by Western Australian Department of Agriculture officers have indicated that more than threequarters of such lamb deaths occur after birth. About half these deaths result from the combined effects of weather and mismothering.

Work in Victoria has indicated that lamb mortality may be reduced by intensive lambing systems such as shedding and this trial was established to see if shedding could reduce lamb mortality in the Esperance environment.

Chemical Ploughing, Geoffrey A. Pearce

Journal of the Department of Agriculture, Western Australia, Series 4

PROGRESS in the field of chemical weed control has been spectacular in recent years. One field that is attracting interest is the idea of replacing cultivation with chemical sprays.

The Use Of Pickled Wheat In Poultry Feeding, P Smetana

Journal of the Department of Agriculture, Western Australia, Series 4

FEEDING fungicides to poultry can result in harmful effects, to the birds themselves, and to their human consumers.

To prevent such effects it is advisable that wheat pickled with fungicides should not be included in poultry rations.

Superphosphate For Wheatbelt Pastures : Rates Of Application, Walter Jacob Cox

Journal of the Department of Agriculture, Western Australia, Series 4

BECAUSE Western Australian soils are low in phosphorus, frequent applications of superphosphate are required for both crop and pasture production. The recommended rates are determined from the results of field experiments that test different quantities of super and measure the extra yield.

This article discusses the recommended rates of superphosphate in relation to soil type and superphosphate history. Methods of application and time of topdressing are also discussed.

Lupins In Western Australia. 2. Cultivation Methods, John Sylvester Gladstones

Journal of the Department of Agriculture, Western Australia, Series 4

While lupins are by and large plants of lighter and less fertile soils, important differences exist among them in their soil preferences.

There may also be some differences in climatic requirements. Present knowledge of these differences is summarized in the Table below.

West Midlands Development : Soil Map Used To Group Similar Soils Into Land Use Classes, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

Selection of areas for initial treatment is basic to economic development of blocks in the West Midlands.

Obviously, it is best to develop large areas of the most productive "land use classes" first in order to obtain the highest and earliest returns on capital.

Fertility Build-Up In Wheatbelt Soils, M D. Carroll

Experimental Summaries - Plant Research

Areas of loamy sand from Wongan Hills Research Station, which had carried subterranean clover for varying numbers of years, were sampled at five depth intervals to 60 cm. Wheat yield and a range of soil properties were related to numbers of years under subterranean clover. (W56H)

Wheatbelt Trace Element Nutrition 1969, J W. Gartrell

Experimental Summaries - Plant Research

1. Rates of Copper and Zinc on Wheat. 2. Rates and Sources of Zinc on Wheat: 3..Zinc Spray Treatments on Wheat.

Ammonium Nitrate Vs Urea, M G. Mason

Experimental Summaries - Plant Research

Ammonium nitrate is a source of nitrogen containing half

its nitrogen in the ammonium form and half in the nitrate form.

Some properties are set out in comparison with urea in the

following table.

Ammonium nitrate has an advantage over urea in that it can

be topdressed onto the surface of the soil and left uncovered

without a danger of loss of nitrogen to the atmosphere. When urea

is left uncovered on the surface of the soil losses of nitrogen occur

through volatilisation of ammonia during the hydrolysis of the urea.

Such losses with ammonium nitrate are only likely to …

Simulation Of The Growth Of Even-Aged Stands Of White Spruce, Kenneth J. Mitchell

Yale School of the Environment Bulletin Series

No abstract provided.

Wood Formation And The Concept Of Wood Quality, Philip R. Larson

Yale School of the Environment Bulletin Series

No abstract provided.

On Temperature And Heat Flow In Tree Stems, Lee Pierce Herrington

Yale School of the Environment Bulletin Series

No abstract provided.