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Articles 289831 - 289860 of 294558
Full-Text Articles in Physical Sciences and Mathematics
Kimberley Research Station : A Progress Report, Department Of Agriculture, Western Australia
Kimberley Research Station : A Progress Report, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
INTEREST in the agricultural potential of the Kimberley region in Western Australia dates from its early exploration and settlement in the last century.
Several farming development schemes were considered for the area, but were never implemented.
This could be mainly attributable to lack of knowledge of agricultural potentialities, limitations of the local environment and ways of exploiting the local environment.
Up to the present the economy of the region is almost entirely based upon the extensive production of beef and to a lesser extent, wool.
Overcoming Stock Watering Problems In The Kimberleys, B Swan
Overcoming Stock Watering Problems In The Kimberleys, B Swan
Journal of the Department of Agriculture, Western Australia, Series 4
ONE of the ever-present problems of the pastoral areas is that of providing: watering-points in reasonably close proximity to the grazing areas.
All too frequently, the country on the river frontages and that in the vicinity of the water-holes becomes eaten out and although there may be ample feed on other portions of the run, it is too far distant from the available water to be effectively utilised.
Deferred Grazing : What It May Mean In The Mulga Region, W M. Nunn
Deferred Grazing : What It May Mean In The Mulga Region, W M. Nunn
Journal of the Department of Agriculture, Western Australia, Series 4
THE practice of deferred grazing has been written up in American textbooks and has been applied effectively to sections of the cattle range lands of the United States.
Early attempts to apply the principle in eastern Australia were not very successful, and it remained for our Departmental workers in the North-West and Kimberley Divisions to demonstrate the phenomenal results that could be obtained on grasslands in summer rainfall areas.
Wild Life In A Modern Age, Clee Francis Howard Jenkins
Wild Life In A Modern Age, Clee Francis Howard Jenkins
Journal of the Department of Agriculture, Western Australia, Series 4
THE present human population of the earth is estimated at about 2 1/2 thousand million, and reliable sources consider that this figure will be doubled by the year 2000.
Although the pessimistic forecasts of Malthus have not yet come true, it is obvious that the world's food requirements, must lead to increased exploitation of land and other primary resources, with consequent repercussions on all forms of wild life.
Weed Research. 7. Weed Control Around The Yard, Geoffrey A. Pearce
Weed Research. 7. Weed Control Around The Yard, Geoffrey A. Pearce
Journal of the Department of Agriculture, Western Australia, Series 4
MANY farmers and city householders have weed problems around houses and sheds which can be readily overcome by treatment with appropriate herbicides.
The risk from fire through weeds and unslightly growth can easily be removed and an area free of any plant growth can be maintained with little effort for a considerable period.
Soil Conservation In The Kimberley Area Of Western Australia, K Fitzgerald
Soil Conservation In The Kimberley Area Of Western Australia, K Fitzgerald
Journal of the Department of Agriculture, Western Australia, Series 4
OFFICERS of the Soil Conservation Branch of the West Australian Department of Agriculture, have not been engaged in soil conservation work in the Kimberleys prior to this year, not because a serious erosion problem did not exist, but rather because with limited trained staff available they were too fully occupied elsewhere.
The recent arrival of a senior Soil Conservation Officer in the area to assist and plan an approach to the problem of soil erosion in the Ord River catchment area is therefore very welcome.
Water Usage Trials With Bananas On The Gascoyne, W M. Nunn
Water Usage Trials With Bananas On The Gascoyne, W M. Nunn
Journal of the Department of Agriculture, Western Australia, Series 4
THE banana industry at Carnarvon is an unusual one by most agricultural standards.
Normally a tropical plant liking relatively humid conditions in a high rainfall, the banana is cultivated at Carnarvon in an area of extremely low rainfall and with relatively low humidity throughout the year.
Water is pumped to irrigate the crop from the sands of the Gascoyne River bed or from bores adjacent to the river course.
List Of Registered Fertilisers : 1959-60, H G. Cariss
List Of Registered Fertilisers : 1959-60, H G. Cariss
Journal of the Department of Agriculture, Western Australia, Series 4
TN accordance with the provisions of the Fertilisers Act, 1928-1955, it is required that—with the exception of bulk sales to a manufacturer and those made in accordance with a buyer's written prescription—all fertilisers sold are required to be registered annually, the registration year being from November 1 to October 31 following.
The list of fertilisers registered for the year commencing November 1, 1959, is set out herewith in tabular form.
Facts And Figures For The Man On The Land, J A. Mallett
Facts And Figures For The Man On The Land, J A. Mallett
Journal of the Department of Agriculture, Western Australia, Series 4
FARM or station life calls for the exercise of so many different skills that the farmer or pastoralist is usually an accomplished handyman.
For those whose schooldays are far behind them however, the most difficult part of many tasks is that of dealing with the calculations involved, and it is hoped that these facts and figures will serve as a handy aid to those whose mathematical ability has not kept pace with their manual and technical skill.
Application Of Palynology To The Study Of Tertiary Rocks Of The Coastal Plain Of Arkansas, Eugene L. Jones
Application Of Palynology To The Study Of Tertiary Rocks Of The Coastal Plain Of Arkansas, Eugene L. Jones
Journal of the Arkansas Academy of Science
No abstract provided.
Occurrence Of Mineralized Ground Water In Southern St. Louis And Jefferson Counties, Missouri, Willard Glennon Owens
Occurrence Of Mineralized Ground Water In Southern St. Louis And Jefferson Counties, Missouri, Willard Glennon Owens
Masters Theses
"Mineralized ground water occurs at some localities in southeastern St. Louis and northern Jefferson counties, Missouri. This water is usually undesirable and is detrimental to development of ground water resources.
Water well records in the offices of the Missouri Geological Survey and Water Resources provided data for a study of structure, lithology and occurrence of ground water. Water well drillers and property owners were interviewed to obtain additional information concerning drilling problems and quality of water.
Geologic cross-sections, subsurface contour maps and isochlorinity maps aided the study of lithology, structure and areal distribution of mineralized ground water. Relationship is suggested …
Some Limnological Conditions Relative To Winter Kill Of Fish In Ice-Covered Representative Farm Ponds In Eastern South Dakota, Jerome L. Johnson
Some Limnological Conditions Relative To Winter Kill Of Fish In Ice-Covered Representative Farm Ponds In Eastern South Dakota, Jerome L. Johnson
Electronic Theses and Dissertations
An aquatic environment involves many complex relationships biologically, physically, and chemically. Many of these relationships are difficult to measure or are little understood. In nature, aquatic environments accommodate many types of aquatic life. Ecological disturbances may cause the environment to become unfit for economically important forms of life. Human interferences often causes polluted waters and naturally occurring disturbances are common. A disturbance of this kind is one of the major problems of fisheries management in the northern Great Plains area – seasonal anaerobosis of fish or other aquatic animals and plants, commonly known as winter kill. Winter kill is usually …
Comprehensive Survey Of Sedimentation In Lake Mead, 1948-49, W. O. Smith, C. P. Vetter, G. B. Cummings, U.S. Bureau Of Reclamation
Comprehensive Survey Of Sedimentation In Lake Mead, 1948-49, W. O. Smith, C. P. Vetter, G. B. Cummings, U.S. Bureau Of Reclamation
Publications (WR)
Reservoirs are becoming an increasingly prominent feature of the American landscape. Built for flood mitigation and to change a fluctuating river into a dependable source of water for irrigation, power, and other purposes, they are predestined, like natural lakes, to be destroyed sometime following their creation. Sedimentation sooner or later robs most lakes and reservoirs of their capacity to store water. The significance of sedimentation in the life of Lake Mead, the largest artificial reservoir in the world, was realized when the plan for the reservoir was conceived, and an aerial survey of the floor was made in 1935 before …
The Chelation Of Cu(Ii) With 1, 3-Bis(Tris(Hydroxymethyl)Methylamino)-2-Propanol And 1, 3-Bis (2-Hydroxyethylamino)-2-Propanol, David Andrew Jackson Jr.
The Chelation Of Cu(Ii) With 1, 3-Bis(Tris(Hydroxymethyl)Methylamino)-2-Propanol And 1, 3-Bis (2-Hydroxyethylamino)-2-Propanol, David Andrew Jackson Jr.
Master's Theses
The chelating agent 1, 3-bis(2-hydroxyethylamino)-2-propanol dihydrochloride was prepared and preliminary examinations of the Cu(ll) and Fe(lll) complexes were carried out spectrophotometrically. This dihydrochloride as well as 1, 3 bis(tris(hydroxymethyl)methylamino)-2-propanol dihydrochloride. were converted from the chloride salts to their corresponding ammonium bases. The conversion was carried out by passing an aqueous solution of each chloride salt through an ion exchange column containing Amberlite XE-78 resin.
Solutions of these bases were standardized for use in potentiometric titration&. Each ammonium base was titrated with standard perchloric acid at 20°C, 30°C, and 40°C. The dissociation constants. were calculated using these data. Aqueous solutions of …
A Chromatographic Study Of The Polyphenols In Cured Tobacco, Marvin Dennis Edmonds
A Chromatographic Study Of The Polyphenols In Cured Tobacco, Marvin Dennis Edmonds
Master's Theses
The object of this project was to isolate, separate, and identify the polyphenols in tobacco. Following this, the aim was to develop a method for the quantitative determination of the major polyphenols in tobacco.
Existing methods for the determination of polyphenols in tobacco involve lengthy procedures which are concerned with one or two of the polyphenols rather than the· complete class of compounds. The methods consist of exhaustive extraction procedures, lengthy chromatographic procedures and numerous methods of identification.
Extensive research on the determination of polyphenols by chromatography has been carried out in the field of tobacco and in other fields. …
The Development Of Nickel Electrodeposits On Copper Monocrystals As Studied With The Electron Microscope, Lucille Burnett Garmon
The Development Of Nickel Electrodeposits On Copper Monocrystals As Studied With The Electron Microscope, Lucille Burnett Garmon
Master's Theses
Important theoretical and experimental developments in the field of electrocrystallization on single crystals are briefly reviewed and new data presented. The deposition of nickel from a Watts-type bath onto electrolytically polished mono crystals of copper is the system chosen for study. Various aspects of the structural changes in the deposit with increasing thickness are considered. The electron microscope is the main tool employed and the deposit is studied by detaching it from the basis metal as well as by the use of surface replicas. Short backgrounds in crystallography and electron microscopy are included.
Preparation Of Elemental Boron And Measurement Of Its Emittance At Incandescent Temperatures, Claude P. Talley
Preparation Of Elemental Boron And Measurement Of Its Emittance At Incandescent Temperatures, Claude P. Talley
Master's Theses
The normal spectral emittance at 0. 65 microns of elemental boron specimens was measured at incandescent temperatures by the hollow-tube method, This was made possible by depositing boron onto thin-walled hollow tubes of graphite and molybdenum. An approximate value of the total hemispherical emittance for boron was also obtained. The deposition of boron was accomplished by chemical vapor plating with boron tribromide and hydrogen. The boron produced was characterized in several ways.
Pike Hybrids (Esox Lucius X E. Vermiculatus) In A Sandhill Lake, Nebraska, D. B. Mccarraher
Pike Hybrids (Esox Lucius X E. Vermiculatus) In A Sandhill Lake, Nebraska, D. B. Mccarraher
Nebraska Game and Parks Commission: Staff Research Publications
In the sandhill region of Nebraska both northern pike, Esox lucius, and grass pickerel, Esox vermiculatus, are abundant in several shallow natural lakes. Both species are known to utilize the same vegetative habitat for spawning during March and April. The pike is an important game species but the smaller pickerel is of little value to fishermen although in winter is at times taken by angling through the ice.
Upland Game Restoration Project, Melvin O. Steen, Willard R. Barbee, C. Phillip Agee, Clarence E. Newton
Upland Game Restoration Project, Melvin O. Steen, Willard R. Barbee, C. Phillip Agee, Clarence E. Newton
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
It is the objective of the project to stabilize the populations of various species of small, upland game to the extent that populations will be maintained at harvestable levels in periods when those populations tend to slump.
It is recognized that in Nebraska nearly all of the small, upland game is produced on private lands. Therefore, the project is designed to provide assistance to the landowners who may wish to improve the game habitat on their lands.
Sacramento Wildlife Development Project, Melvin O. Steen, Willard R. Barbee, C. Phillip Agee, Richard J. Spady
Sacramento Wildlife Development Project, Melvin O. Steen, Willard R. Barbee, C. Phillip Agee, Richard J. Spady
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
During the past year, the project has been in a period of transition from a developmental phase to management and maintenance phases. At this time, most of the major developmental work has been completed, with mainly corrective or finish work remaining. Major developmental work yet to be done includes the laying of buried pipe from the wells to the lake bottom; and the design, construction and installation of suitable hunting blinds for the area. When the aforementioned work is completed the project will settle almost entirely into maintenance and management activities.
Annual Report- Game Division, Lloyd P. Vance, Shirley Lindholm
Annual Report- Game Division, Lloyd P. Vance, Shirley Lindholm
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
Two classes of game farm permits were made available by the 1957 legislature to persons keeping protected species of wildlife in captivity. A pet or fancier permit authorizes the possession of fifty or less game birds or game animals where no commercial use is made of such wildlife. A commercial permit authorizes the possession of game birds and game and fur-bearing animals of regardless of number, where trade, sale, barter, or any commercial use is involved. During 1960, 195 pet permits and 92 commercial permits were issued for a total of 287 permits. In 1959 a total of 432 permits …
An Investigation Of The Bakken And Englewood Formations (Kinderhookian) Of North Dakota And Northwestern South Dakota, Jack Kume
Theses and Dissertations
Lower Mississippian rocks of the Williston Basin and Black Hills include the Bakken and Englewood formations of Kinderhockian age. The Englewood formation crops out in the northern Black Hills and can be traced with difficulty into the subsurface. The Bakken formation does not crop out in the area out in the area of this study. This study is based upon well sample and mechanical log information and measured surface sections.
The Englewood in the outcrops consists of a lower shale unit, a middle argillaceous and shaly limestone unit, and an upper delomitie limestone unit. A type section, NW, SE; see. …
International Farm Crawlers: T-4, T-5, & Td 5, Nebraska Tractor Test Lab
International Farm Crawlers: T-4, T-5, & Td 5, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
Advertising Brochure: 1960 Case Tractors, Nebraska Tractor Test Lab
Advertising Brochure: 1960 Case Tractors, Nebraska Tractor Test Lab
Nebraska Tractor Tests
No abstract provided.
Test 807: Massey-Ferguson Mf-50 (Diesel), Nebraska Tractor Test Lab
Test 807: Massey-Ferguson Mf-50 (Diesel), Nebraska Tractor Test Lab
Nebraska Tractor Tests
EXPLANATION OF TEST REPORT GENERAL CONDITIONS East tractor is a production model equipped for common usage. Power consuming accessories can be disconnected only when it is convenient for the operator to do so in practice. Additional weight can be added as ballast if the manufacturer regularly supplies it for sale. The static tire loads and the inflation pressures muse conform to recommendations in the Tire Standards published by the Society of Automotive Engineers. PREPARATION FOR PERFORMANCE RUNS The engine crank case is drained and refilled with a measured amount of new oil conforming to specifications in the operator’s manual. The …
Oxygen Permeability Of Free Paint Films, Janice I. Kellerman
Oxygen Permeability Of Free Paint Films, Janice I. Kellerman
Masters Theses
"As early as the mid 1800’s investigations were performed on the gas passage through rubber, but it is only comparatively recently that plastic polymeric materials have come into prominence. One interesting aspect of much experimentation begun was that of permeability, and it was soon evident that, in general, polymeric materials have extremely low permeability of gases. This is, in essence, the basis for use of plastics as packaging materials, balloons, and in many other designs and fabrications where it is desirous and/or necessary to exclude air.
There are several variables which must be taken into consideration in the evaluation of …
Gravimetric Determination Of Barium By Homogeneous Precipitation With Sulfamic Acid, Elizabeth Ann Kunst
Gravimetric Determination Of Barium By Homogeneous Precipitation With Sulfamic Acid, Elizabeth Ann Kunst
Bachelors’ Theses
Work was undertaken to confirm the results reported by W.y. Wagner and J.A. Wuellner in Analytical Chemistry, 24, 1031 (1952) for the gravimetric determination of barium by homogeneous precipitation with sulfamic acid, to determine the effects produced by slight modifications in procedure, and to investigate the feasibility of separating mixtures of barium and calcium by this method.
Commercial Vegetable Growing In The Perth Metropolitan Region, L T. Jones
Commercial Vegetable Growing In The Perth Metropolitan Region, L T. Jones
Journal of the Department of Agriculture, Western Australia, Series 4
MARKET gardening with sprinkler irrigation on deep sandy soils around Perth is really a commercial application of hydroponics or sand culture principles.
Provision of a continuous and adequate supply of nitrogen is the major problem. Peat swamps scattered among the sandy areas have higher natural fertility. However, their common problems are drainage, acidity ("sourness"), salt and various special soil deficiencies. Over-liming of acid swamps can cause new problems.
Irrigation In Western Australia : Report On Government-Controlled Areas : 1958-59, H K. Gibsone
Irrigation In Western Australia : Report On Government-Controlled Areas : 1958-59, H K. Gibsone
Journal of the Department of Agriculture, Western Australia, Series 4
IRRIGATION in the south-western portion of Western Australia is mainly confined to the coastal plain west of the Darling Range where the three main irrigation districts of Harvey, Collie and Waroona have been established by the State Government.
The Government-controlled irrigation areas extend southward from Waroona (70 miles from Perth) to Dardanup (120 miles from Perth) and have an average width of about five miles.
Early History Of Malad Valley, Glade F. Howell
Early History Of Malad Valley, Glade F. Howell
Theses and Dissertations
The Malad Valley is geographically located in a unique position in the Pacific Northwest. The Bear River and its main affluent, the Malad River, are the only rivers in the Pacific Northwest that drain into the Great Basin, whereas the other streams and rivers of the states of Washington, Idaho, and Oregon empty eventually into the Pacific Ocean. It is also characterized for being the northern end of prehistoric Lake Bonneville, and eventually it was through this valley that an outlet opened to drain the lake. The soil deposits from this lake left a fertile valley, capable of producing most …