Physical Sciences and Mathematics Commons^™

Sheep : Experimental Basis For Urea Feeding Recommendations, Department Of Agriculture, Western Australia

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

Recent scientific reviews have concluded that in spite of the great number of experimental observations recorded throughout the world there is no evidence yet to prove that urea can be used profitably for sheep on low quality roughages in genuine grazing conditions.

An experiment is in progress at Merredin Research Station this season, especially designed to demonstrate a response to urea by sheep grazing wheat stubbles, if such a response is possible.

The Control Of Algae, G R W Meadly

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

CONDITIONS in areas of still, stored water in Western Australia can easily become ideal for the development of algae and control measures may become necessary in farm dams and swimming pools.

Part I - Controlling The Soil Moisture Environment Of Transpiring Plants, Part Ii - Prediction Of Leaf Temperature Under Natural Atmospheric Conditions, Charles T. Haan, Billy J. Barfield, Robert Edling

KWRRI Research Reports

Part I

A technique for controlling the soil moisture potential in the root zone of transpiring plants was developed. The method uses the principles of unsaturated flow through a porous media to develop the desired moisture potential. In the case of non-steady state transpiration, the maximum possible fluctuation in the soil moisture potential can be determined by the techniques presented.

Part II

Two implicit leaf temperature prediction equations were derived from the energy balance approach. The equations define sensible and latent heat transfer from a plant population as a two step process:

1. Transfer between the plant leaf and the canopy …

The Importance Of Maintaining Quality And Availability In The Marine Environment, William J. Hargis Jr.

Reports

No abstract provided.

Some Ecological Relations Of Fairy Shrimps In Alkaline Habitats Of Nebraska, D. B. Mccarraher

Nebraska Game and Parks Commission: Staff Research Publications

Ecological studies on the distribution of fairy shrimps have been made from 246 sites in the sandhills region of Nebraska. New records for Nebraska have been established for Artemia salina, Branchinecta campestris, B. lindahli, B. mackini and Cyzicus mexicanus. Seasonal populations of shrimp have been located in habitats containing permanent fish populations. Water mineralization was the dominant environmental condition related to the distribution of phyllopods with sodium and potassium compounds predominating in the strongly alkaline lakes. Several of the Artemia lakes were classified as hydroxide sites. Many of the alkaline ponds, where B. lindahli and B. campestris flourish, are …

1970 Results Of Field Experiments, A C. Devitt

Experimental Summaries - Plant Research

Please find enclosed a summary of results obtained from a range of field trials. These include a study of some techniques to replace undesirable cultivars of subterranean clover; the competitive ability of some subterranean clovers; the evaluation of the sub clover cultivars, Dinninup 3, Midland B,some members of subspeciesYanninicum, the medic cultivars Cyfield and Tornafield; and the preliminary results from an exotic pasture species introduction trial at Shark Bay. In most cases complete results have been or will be circulated in report form.

Experimental Results 1970-71 - Phosphorus-Sulphur Maintenance Trials., R N. Glencross

Experimental Summaries - Plant Research

Medium Rainfall Zone Trials Eleven replications of the basic rate of P, rate of SO4-S and S experiments were maintained during 1970 in the 20in - 30 in. rainfall zone. Soil types examined were the very gravelly soils (5 reps, 4 sites), sands or loamy sands over gravel or clay (3 sites) and sandplain soils (3 reps, 2 sites). In all cases except one, fertiliser history was not reliable, but in every case well over one ton of super had been applied. over a period of over 15 years.

Anhydrous Ammonia, M G. Mason

Experimental Summaries - Plant Research

Anhydrous ammonia, as the name infers, is pure ammonia, It is kept in a liquid form under pressure and must therefore be stored in special vessels. When pressure is released it changes to gaseous form. Anhydrous ammonia is the most concentrated form of nitrogen fertiliser available. It has 82% nitrogen compared to 46% for urea, the most concentrated solid form of nitrogen fertilisers.

Trials carried out were:

1965 - 1967 Wongan Hills Research station (3)

1967 - Badgingarra (1)

1968 - Moulyinning (1)

1968 - North Lake Grace (1)

1969 - Westonia (1)

Merredin (1)

Tammin. (1)

Attendance Report: Small Mammal Workshop, Clive D. Jorgensen

Memorandum

No abstract provided.

Plant Observations In Validation Studies, David W. Goodall

Memorandum

No abstract provided.

Annual Summary Of Experimental Results 1970-71 - Evaluation Of Pasture Species, G H. Walton

Experimental Summaries - Plant Research

During 1970 interest in the small ungrazed Legume Species Trials was reduced to ten trials located in the more troublesome areas. Five of the trials are on the sandy soils of the Midland Plain three trials are in Merredin-Southern·cross region, one is on deep sand at Tincurrin and the other is at Pindar. All thesites are sandy soils on which the sub clover strains appear to perform the best. The newer trials are investigating the value of sub clover cultivars such as Northam A,Mt Helena A, Shenton Park A, and Daglish. These trials will be the subject of a special …

Annual Report And Membership List, 1969-70, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Minutes of the Annual Business Meeting ... 3
Report of Tellers - Constitution Revision ... 7
Report of the Secretary - Treasurer ... 7
Report of the Auditing Committee ... 7
General Operating Budget 1970-71 ... 8
Report of the Membership Committee ... 9
Report of the Finance and Endowment Committee ... 16
Report of the Science Teaching Committee 17
Report of the Science Talent Search Committee ... 19
Report of the Conservation Committee ... 20
Report of the Resolutions Committee ... 21
Report of the Editor ... 22
Report of the High School Relations Committee ... 22
Membership …

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 …

Reports - 1970 (Full Report), International Biological Program

Reports

No abstract provided.

Proceedings Of The Arkansas Academy Of Science - Volume 24 1970, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.

Emergency Chlorination Of Farm Water Supplies, H C. Hughes

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

TOWARDS the end of summer (and especially in a drought) the risk of water in dams, soaks, wells or tanks becoming polluted is increased.

Bore water is much less likely to be affected unless the bore is poorly sited near a farm building, such as a shearing or milking shed, a pig pen, or a septic tank system.

Soil Microbiology, D E. Chatel

Experimental Summaries - Plant Research

SUBTERRANEAN CLOVER INOCULATION EXPERIMENTS Badgingarra and Newdegate Comparisons between Rhizobium trifolii strain WU290 and possible replacement strains were continued. The work was conducted for the following reasons 1. The need for information on "back-up" strains particularly since the inoculant manufacturers had experienced difficulty in producing high-count peat cultures of WU290. 2. Strain CC2480a had proved very satisfactory in the Eastern States. Although it did not show up to advantage under our conditions in 1968,further testing was indicated. 3. The need for information on inoculation needs on old land.

A Time Series From The Beach Environment-Ii, Wyman Harrison, L. E. Fausak

Reports

This work is the second in a continuing series of time-series data reports to be published periodically as a result of field investigations in the beach-ocean-atmosphere system by Dr. Wyman Harrison and his associates. The first report was published as Technical Memorandum ERLTM-AOL 1 of ESSA's Atlantic Oceanographic Laboratories. This series of reports will allow other researchers to test hypotheses or to experiment with analytical procedures without going through the expensive and somewhat arduous task of obtaining the data.

Survival And Activity Of The Oyster Drill, Urosalpinx Cinerea (Say), Under Conditions Of Fluctuating Salinity, Arthur Zachary

Dissertations, Theses, and Masters Projects

No abstract provided.

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 …

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.

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 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 …

The Agricultural Potential Of Owingup Swamp, C V. Malcolm, L T. Jones, J. P. Fallon

Technical Bulletins

1. Soil Survey of Owingup Swamp

2. Comparison of Owingup and Grasmere Swamps

The two swamps, Owingup and Grasmere, shown on the location map 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 unalienated. Soils on both swamps consist of mainly organic diatomaceous clay. The survey reported here was aimed at assessing the agricultural potential of Owingup Swamp in the light of experience gained since the clearing of Grasmere Swamp. Findings of the survey indicate that some 2000 acres at Owingup …

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.