Physical Sciences and Mathematics Commons^™

Treating Severe Saltland, Department Of Agriculture, Western Australia

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

THE illustration shows a large area of severely salt affected land near Narembeen.

Before treatment, sheep had access to the area and in summer broke the topsoil into a fine powder which lifted to form dust storms with every good breeze.

Soil Conservation : Contour Banks Must Be Maintained, D J. Carder, G. W. Spencer

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

The wet winter of 1963 showed up faults in many contour bank systems and emphasised that banks won't last forever without maintenance.

This article tells where to look for weaknesses and how to treat them.

Soil Erosion And Farm Water Supplies, J C. Grasby, J. E. Watson

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

Water supplies for stock have an important influence on farm management.

In this article Soil Conservation Advisers J. C. Grasby and J. E. Watson discuss problems of soil erosion and farm water supplies.

Grade Herd Recording, 1963-64, Maurice C. Cullity

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

A review of Grade Herd Recording during the 1963-64 season.

THERE was a substantial increase in the number of cows which were recorded in 1963-64 compared with 1962-63 (23,520 and 22,635 respectively).

This season's figure represents 20.4 per cent, of all cows in the dairying districts.

The number of cows which completed lactation and therefore whose yields were included in the averages, rose from 17,258 to 19,011.

Opposed Disc Plough Furrows Hard Kimberley Soils, Department Of Agriculture, Western Australia

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

THE work of reclaiming the eroded areas of the Ord River catchment has posed special problems for field staff of the Department of Agriculture engaged on this large scale project.

Thousands of miles of furrows must be contour-ploughed and seeded in extremely hard ground over big areas of eroded country.

Migratory Movements Of Emus And Control Efforts, John L. Long, T. J. Tozer

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

ALTHOUGH little data has been recorded on movements or migrations of the Emu (Dromaius novea-hollandiae), it is well known throughout the farming community that some such movement occurs in September and October in most years at least.

Calibration Of Irrigation Headgates By Model Analysis, Gaylord V. Skogerboe, Vaughn E. Hansen

Reports

Introduction

The purpose of this research project was to calibrate the slide gates used by the D.M.A.D. Company (Delta, Melville, Abraham and Deseret Irrigation Companies). These gates, which number more than 600, are located throughout the distribution system. Each gate is placed in a concrete box 4 feet wide, 3-1/2 feet deep and 4 feet long. The structure is used as a means of diverting the water and is also used as a measuring device.

A similar structure, but with a different type of slide gate, was calibrated in 1914. At the time rating tables were prepared which listed the …

Solar Energy And Sunshine In Nebraska, Norman J. Rosenberg

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Weather Bureau records of measured solar radiation useful in interpreting the solar energy regime in Nebraska are available from Lincoln-Omaha, Nebraska; Dodge City, Kansas; Laramie, Wyoming and Rapid City, South Dakota. Pertinent records of sunshine duration (percent of possible sunshine) are available from Lincoln, Omaha, North Platte and Valentine, Nebraska; from Concordia and Dodge City, Kansas; from Cheyenne, Wyoming; from Rapid City and Huron, South Dakota and from Sioux City, Iowa. These records have been subjected to statistical summarization and analysis.

New Species Of Proctophyllodes From Bulgaria (Sarcoptiformes, Analgoidea), Warren T. Atyeo, I. D. Vassilev

Bulletin of the University of Nebraska State Museum (1924–2023)

Two new species of feather mites are described: Proctophyllodes tenericaulus from Turdus viscivorus L. (Turdidae) and Galerida cristata (L.) (Alaudidae) and Proctophyllodes emberizae from Emberiza melanocephala Scopoli and E. hortulana (L.) (Fringillidae).

Prodromus Of American Bees Of The Genus Andrena (Hymenoptera, Apoidea), Wallace E. Laberge

Bulletin of the University of Nebraska State Museum (1924–2023)

Keys to the females and males and diagnoses of the American subgenera of the genus Andrena are presented in this paper. Previously described subgenera recognized in this work are as follows: Callandrena Cockerell, Scaphandrena Lanham, Plastandrena Hedicke, Parandrena Robertson, Dactylandrena Viereck, Andrena Fabricius, Iomelissa Robertson, Oligandrena Lanham, Hesperandrena Timberlake, Micrandrena Ashmead, Gonandrena Viereck, Opandrena Robertson, Cnemidandrena Hedicke, Simandrena Perez, Thysandrena Lanham, Taeniandrena Hedicke, Ptilandrena Robertson, Trachandrena Robertson, Xanthandrena Lanham, Diandrena Cockerell, Leucandrena Hedicke, Melandrena Perez, Gymnandrena Hedicke, Scoliandrena Lanham, Onagrandrena Linsley and MacSwain. The following five new subgenera are described: Eremandrena, Larandrena, Tylandrena, Geandrena, Chaulandrena.

A Review Of The Mites Of The Family Pseudocheylidae Oudemans, 1909 (Acarina, Prostigmata), Edward W. Baker, Warren T. Atyeo

Bulletin of the University of Nebraska State Museum (1924–2023)

Four genera and ten species are included; these are: Pseudocheylus biscalattts Ber1ese, 1888, P. americanus (Ewing), 1909, Stigmocheylus brevisetus Berlese, 1910, Anoplocheylus europaeus (Berlese), 1910, A. clavatus, n. sp., A. aegypticus, n. sp., A. protea (Womersley), 1935, Neocheylus natalensis Tragardh, 1906, N. nidcolus Lawrence, 1954, and N. collis, n. sp.

Sulfur Fertilizers For Alfalfa Production In Nebraska, R. L. Fox, A. D. Flowerday, F. W. Hosterman, H. F. Rhoades, R. A. Olson

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In order to elaborate all aspects of the sulfur problem in alfalfa production, a series of field, greenhouse and laboratory experiments was initiated to determine: 1. The influence of sulfur fertilization on the yield of alfalfa in Nebraska. 2. The influence of sulfur fertilization on the protein, vitamin A, and sulfur contents of alfalfa. 3. The sulfur supplying capacities of various soils under field and greenhouse conditions. 4. The sulfur content of precipitation at widely scattered points in Nebraska. 5. Soil properties associated with sulfur deficiency. 6. Optimum methods for estimating the sulfur status of soils by soil testing. The …

Modern Methods Boost Apple Production In A South-West Orchard, N H. Shorter

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

A WELL-KNOWN South-West apple orchard with an impressive cropping record is owned by W. F. & E. M. Dilley and Sons, of Upper Capel, near Donnybrook.

Trees in this orchard have been producing consistently heavy crops for many years and, furthermore, yields have increased steadily over a 10-year period.

Put Garden Rubbish To Work In A Compost Heap, W Dawson

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

THERE'S a surprising amount of mumbo jumbo written about the simple compost heap. By the time you've waded through all the instructions, you feel as if you ought to have prerequisites of a doctorate in soil chemistry or an unbroken ancestry of at least three generations of professional English gardeners.

Soil Erosion By Water In W.A. Cropland : A Serious And Widespread Problem, Department Of Agriculture, Western Australia

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

Much wheatbelt agriculture is based on thin topsoils which are inherently infertile by world standards. Erosion even to the depth of cultivation will cause the loss of:—

• most of the original topsoil

• the phosphate build up from years of "super" applications

• any accumulation of organic matter and humus.

Salt Land Survey, 1962 : Report Of A Survey Of Soil Salinity In The Agricultural Areas Of Western Australia, L C. Lightfoot, S. T. Smith, C. V. Malcolm

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

IN Western Australia there are within the agricultural areas about one million acres of salt land, largely within the 14-25 inch rainfall area used for cereal and wool production.

In March, 1962, farmers in 68 shires in the agricultural areas of Western Australia estimated that on their properties 305,270 acres of land previously cropped or sown to pasture had become salt affected. Of this total, 59,203 acres had gone salt in the seven years immediately before the survey.

Agriculture In The Lakes District : Report Of A Survey Of Farm Practices, A W. Hogstrom

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

At the request of the Central South Zone Development Committee a survey which covered 58 farms in the Lakes District was carried out by officers of the Department of Agriculture. Field work for the survey started in 1961.

The Lakes District supports about 70 holdings adjoining a chain of salt lakes to the east of Newdegate and Hyden but west of the No. 1 Rabbit Proof Fence.

The chain of lakes is about 70 miles long running in a N.N.W. to S.S.E. direction. The lakes are O'Connor, Carmody, Hurlstone, Varley, Gulson, Fox, Camm, King, and Pal lamp.

Distribution Of Sodium Perchlorate Between Tributyl Phosphate And Water, John A. Tengler

Masters Theses

"The questions posed by Carroll (23) concerning a TBP-H₂O system and an alkali salt -which is appreciably soluble in TBP have been partially answered by the experiments described in this thesis"--Conclusions, page 38.

Correlation Between Drying Times Of A Vinyl Copolymer Solution And Properties Of Dried Films., Abd El-Rahman M. Naser

Masters Theses

"One of the common methods used in film formation is the solvent evaporation method. As the evaporation starts the viscosity increases due to the inability of the solvent to keep the chains apart, which leads to a drag between molecules.

The rate of evaporation of the solvent (loss of solvent) cannot be equated with the rate of drying, since the latter depends on the results of the loss of solvents in terms of viscosity and plastic properties. The drying time can be defined as the rate at which a film increases its viscosity and thus changes the properties of a …

On A Numerical Solution Of Dirichlet Type Problems With Singularity On The Boundary., Randall Loran Yoakum

Masters Theses

No abstract provided.

A New Determination Of The Homogeneous Nucleation Rate Of Water In Helium, Edward Francis Allard

Doctoral Dissertations

"The object of this investigation is to apply the best known cloud chamber techniques to the study of condensation phenomena, directed mainly toward the development of a precise method for the determination of homogeneous nucleation rates. A secondary object is to investigate the properties of re-evaporation nuclei so that adequate precautions may be taken to eliminate their detrimental effect in the homogeneous nucleation experiments"--Statement of Problem, page 10.

Stratigraphy Sedimentation And Petroleum Possibilities Of The Middle Ordovician (Kimmswick-Galena) Rocks Of Missouri, Illinois And Iowa, Krishna Kant Misra

Doctoral Dissertations

"Detailed surface and subsurface studies of the Kimmswick Limestone and the Galena Formation of Middle Ordovician age in eastern Missouri, western Illinois, and southeastern Iowa were conducted in order to examine their stratigraphic relations, geological history, environment of deposition, and petroleum possibilities.

The main objective of this study was to seek a stratigraphic subdivision of the Kimmswick Limestone in Missouri, based on its gross lithology and thin section study, and its correlation with the Galena Formation in Illinois and Iowa. As a result of this study, based on the examination of twelve surface sections and 92 thin sections a three-fold …

A Kinetic Study Of The Thermal Decomposition Of Calcium Carbonate, Clayton Kenneth Little

University of the Pacific Theses and Dissertations

Differential thermal analysis le a dynamic process for observing the thermal decomposition of reacting sub- stances, The heart of the equipment for this process is a vanadium steel sample holder approximately two inches in diameter and one inch thick. Two wells, approximately one inch apart, serve as holders for the sample and reference material. Inserted in the bottom of each well is a thermo- couple of platinum, platinum-rhodeus. Attached to the thermocouples is an amplifier and a recorder.

Food Habits Of Bigmouth And Smallmouth Buffalo In Lewis And Clark Lake And The Missouri River, Thomas S. Mccomish

Electronic Theses and Dissertations

Food habits were determined for 386 bigmouth buffalo and 277 smallmouth buffalo collected in 1962 and 1963 from Lewis and Clark Lake and the Missouri River. Young-of-the-year bigmouth buffalo stomachs contained 100 percent zooplankton. Bigmouth buffalo (330 to 530 millimeters) stomachs contained 99 percent zooplankton in 1952 and 95 percent in 1963. Digestive tracts of young-of-the-year smallmouth buffalo contained 99 percent copepods and one percent sand. Smallmouth buffalo (250 to 400 millimeters) contained about 65 percent zooplankton, 30 percent phytoplankton, and the remaining five percent consisted of chironomid larvae, plant detritus, and sand.

Self Diffusion In Sodium Single Crystals, Aiyawar Rama Murthy

Master's Theses

The diffusion coefficients of sodium tracers in single crystals of pure sodium were measured as a function of temperature over a range of 20-41^oC. The relation D=D_o exp (-Q/RT) was found with Q 11,000 +/- 170 cal/mole and D_o 0.313 +/- 0.018 cm²/sec. These values may be compared with Q=10,450 cal/mole and D_o=0.242 cm²/sec. reported for polycrystalline sodium.

"Equilibria In Solution" : 2,2,8,8-Tetrakishydroxymethyl-3, 7-Diaza-1, 5,9 -Nonanetriol And 2,2,8,8-Tetramethyl-3, 7-Diaza-5-Nonaneol With Copper (Ii), Ronald Weston Davis

Master's Theses

The chelating agents, 2, 2, 8, 8-Tetrakishydroxymethyl1-3, 7-diaza-1, 5, 9-nonanetriol (''Disec") and 2, 2, 8 ,8-Tetramethyl1-3, 7-diaza-5-nonaneol ("Symaminol") were prepared and investigated with respect to their Basicity and Stability Constants.

The compound, "Disec," investigated in earlier work was again studied using more precise and controlled conditions of temperature (30.000 + - 0.002°C), measured pH readings and volume readings.

Tbe compound, "Symaminol," was prepared in the laboratory and studied in the same manner as "Disec." Examination of the literature yielded no evidence of "Symaminol" having been previously investigated.

By means of a digital computer, the data was correlated in a manner …

The Pyrolysis Of Menthol, John James Westbrook Iii

Master's Theses

Research on the pyrolysis or organic compounds has received an increasing amount of attention in recent years. The pyrolysis of terpene hydrocarbons has been of interest primarily because of their wide-spread and abundant natural occurrence. In addition terpenes have been investigated because of their interesting stereochemistry.

Menthol is a C₁₀ monocyolic terpene alcohol. Its thermal decomposition at temperatures greater than 500°C has not been investigated previously because of inadequate methods of analysis.

The pyrolysis of other terpene hydrocarbons has revealed new routes to useful intermediates from relatively cheap source materials. Menthol, however, has never been considered as a possibility …

Recent Limnological Studies Of The Alkaline Lakes In Nebraska And North Dakota, D. B. Mccarraher

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

Environmental relationships and biological indices have been recorded for 1,200 sandhills lakes in Nebraska since 1954. Three lakes in central and southern North Dakota were investigated during the years 1963 to 1964. Most of the Nebraska lakes were alkaline eutrophic of the sodium bicarbonate and sodium + potassium carbonate types. The North Dakota lakes range from sodium bicarbonate to sodium sulfate types. These lakes may be classified as saline eutrohpic. The ionic composition differs from that of the marine and inland sodium chloride type of water. The invertebrate fauna of permanently alkaline environments are discussed from the point of view …

Preliminary Studies In The Development Of A Gastric Battery For Fish, Earl R. Kendle, Larry A. Morris

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

In 1956 Parker S. Trefethen described an external ultrasonic tag for tracking fish. This tag was designed for use on adult king salmon, Oncorhynchus tshawytsca, and was subsequently used to track these fish above Bonneville Dam (Johnson, 1957). Although this tracking system was the best available at that time several limitations to its use were evident: the transmitter and power supply were large and thus impractical for use on small fish, and the unit was attached externally and was likely to influence movement, and the life of the battery was very short (17 hours). Succeeding transmitters were somewhat longer-lived …

Microfacies Analysis Of The Duperow Formation In The Beaver Lodge Field, Williams County, North Dakota, Albert D. Pernichele

Theses and Dissertations

This investigation is a petrographic study of a composite section from the Duperow formation in western North Dakota in which seven cyclic microfacies are described and environmentally evaluated. The microfacies are:

1. Anhydrite-dolomite microfacies. Chemically precipitated cryptocrystalline calcite.

2. Micrite microfacies: Chemically precipitated, structurless cryptocrystalline calcite.

3. Saccharoidal dolomite microfacies. Microgranular dolomite representing dolomitized limestone .

4. Pelmicrite-pelletiferous micrite microfacies. Pelletoidal grains of cryptocrystalline calcite and small amounts of fossil material in a matrix of cryptocrystalline calcite.

5. Fossiliferous micrite-biomicrite microfacies. Fossil material in a matrix of cryptocrystalline calcite.

6. Pelsparite microfacies. A loo e framework of pelletoidal grains and …