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Articles 283351 - 283380 of 293980

Full-Text Articles in Physical Sciences and Mathematics

El Petróleo Submarino, Aldemaro Romero Jr. Jan 1973

El Petróleo Submarino, Aldemaro Romero Jr.

Publications and Research

No abstract provided.


Los Cañones Submarinos, Aldemaro Romero Jr. Jan 1973

Los Cañones Submarinos, Aldemaro Romero Jr.

Publications and Research

No abstract provided.


Objective Measurement And The Stud Breeder, B R. Beetson Jan 1973

Objective Measurement And The Stud Breeder, B R. Beetson

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

The movement towards sale of wool by certificate and sample highlights the significance of objective measurement in the Merino stud breeders' selection of his top rams.

This article suggests how stud breeders should use the Department of Agriculture's Flock Testing Service to gain genetic progress in wool producing ability without loss of visual buyer appeal.

Studs' use of the service will be evaluated in 1974.


1973 Seasonal Results Phosphorus And Sulphur Group, J W. Bowden Jan 1973

1973 Seasonal Results Phosphorus And Sulphur Group, J W. Bowden

Experimental Summaries - Plant Research

Summary of 1973 Seasonal results phosphorus and sulphur group. Stocking rate x super rate Residual value of superphosphate - 1972 'Decide' Maintenance assessments PXS trials Rates of super on pasture - CSIRO/NSFP Rate/super on wheat - Sources of sulphur - Gyplap - Bunbury - Lake Grace Lime Trials - Lake Jasper - Northcliffe

62MB9, 65N5, 65A1, 65C5, 65A166M30, 66ME3, 66NO7, 66LG1, 66NA3, 67NO5, 67NO5, 67GE2, 67NO11,68AL36, 68B1, 68BR5, 68BR6, 68B1, 68BR7, 68BU2, 68NO5, 69AL2, 69AL3, 69E6, 69WH15, 72M034, 72M042, 72NA35, 72NA39, 72N40, 72N037, 72N040, 72M043, 72N057, 72NO57, 72BA33, 73BA16, 73BY10, 73BY11, 73BY12, 73BY13, 73LG3/3A, 73MA9, 73MA10, 73MA12, 73MA13, 73MA14.


Summary Of 1973 Field Experiments With Advisers, M L. Poole Jan 1973

Summary Of 1973 Field Experiments With Advisers, M L. Poole

Experimental Summaries - Plant Research

SECTION I: Effect of times of planting x Benlate seed treatment on incidence of blackleg in Span and Zephyr rapeseed. SECTION II: Rapeseed Variety Trials 1973 including times of planting. This report provides a record of two series of trials carried out in 1973. Trials - 73A4, 73AL10, 73AL11, 73AL12, 73BR9, 73BR12, 73BR13, 73ES7, 73ES8, 73GE3, 73JE4, 73JE5, 73KA3, 73KA7, 73M2, 73MO11, 73MO13, 73MT5, 73MT6, 73NA6, 73NA7. Effect of times of planting x Benlate seed treatment on incidence of blackleg in Span and Zephyr rapeseed, series of 12 trials were set up, mainly in the southern agricultural areas, near previous …


Summary Of 1972 Seasonal Results "Decide" Superphosphate Rates On Pastures, J. W. Bowden Jan 1973

Summary Of 1972 Seasonal Results "Decide" Superphosphate Rates On Pastures, J. W. Bowden

Experimental Summaries - Plant Research

A total of 53 pasture trials were topdressed. Of these, 37 trials were quantitatively assessed at different times during the growing season. Of the 15 wheat trials sown, only four trials gave useful results because of multiple drilling techniques used on most trials. Until the trial results have undergone comprehensive statistical analysis, no conclusions can be drawn. about the levels of response or "optimum" rates of superphosphate application at individual sites. However, because of the very short growing season in 1972 responses were generally poor. It appears that nil superphosphate application would have been optimum for animal production in the …


Lupin Split Seed Pilot Trial - Esperance Downs Research Station., J. W. Gartrell Jan 1973

Lupin Split Seed Pilot Trial - Esperance Downs Research Station., J. W. Gartrell

Experimental Summaries - Plant Research

Lupin Split Seed Pilot Trial. Esperance Research Station 1974. % of seed classed according to size and degree of splitting. Manganese - S Richardson - Dandaragan 73PE2


Summary Of Trial Results - 1973, N. R. Mckeown Jan 1973

Summary Of Trial Results - 1973, N. R. Mckeown

Experimental Summaries - Plant Research

Trials in Progress During 1973 observations were made on 11 small plot legume species· trials and 11 grazing trials. In 1974 the small plot trials will remain the same and the grazing trials will be reduced to 8. This report summarizes the results from the grazing trials under the following headings:- Seasonal Conditions. Grazing Experiments. 68M023 - Legume Grazing Management·Trial,. West Moora. 71LG17 - Comparison of Production from Cyprus Medic and Volunteer Pasture. Comparison of Production from Tornafield Medic, Serradella and Subterranean.Clover. 70ME2 - Walgoolan 71WH13 - Wongan Hills 69M017 - Watheroo 69LG24 - Lake Grace. Low Oestrogen Legume Grazing …


1973_Pasture Species Investigations - Wheatbelt, N. R. Mckeown Jan 1973

1973_Pasture Species Investigations - Wheatbelt, N. R. Mckeown

Experimental Summaries - Plant Research

Results from trials comparing the growth and persistence of a number of annual pasture legumes in 1973 are presented in this report. Rainfall conditions during the year are described briefly and a table of annual and growing season rainfall at relevant centres is appended. The experiments are grouped as follows according to average annual rainfall:- Zone A - Average annual rainfall 400 mm. Zone B - Average annual rainfall 345 - 400 mm. Zone C - Average annual rainfall 345 mm. and then further on soil type. 70GE4, 70ME3, 70ME4, 70NA3, 70TS2, 70TS5, 71LG16, 71TS22, 72LG3, 72LG26,


1973 Long Term Rotation Trials, Ian Rowland Jan 1973

1973 Long Term Rotation Trials, Ian Rowland

Experimental Summaries - Plant Research

The results shown are the yield of grain harvested from crops grown after various lengths of pasture ley. Experiments - W56H, 66M29, 67BA6, 68E5, 68SG5, 69GE20,


1973 Rates Of Phosphate On Lupin Yield, G Walton Jan 1973

1973 Rates Of Phosphate On Lupin Yield, G Walton

Experimental Summaries - Plant Research

Comments on results New land sites (Graphs 1 & 2) The three sites were very responsive with the point of inflexion about 600 kg/ha super rate (similar to 1972 result). The seed x super rate interaction shows the quicker response to super with .higher seeding rates. Low super bank (800 kg/ha) (GRAPH 3) The two sites showed very little response to super applied. On the Eradu sandplain no response to super for either Unicrop or Wheat. On the Watheroo yellow sandplain ( 73M015) the two lupin cultivers and the wheat gave different responses. High super bank ( >1 OOOkg/ha) (GRAPH …


Changes In Polysomes Of Black Locust Seedlings During Dehydration-Rehydration Cycles, James R. Brandle, P.D. Schnare, T.M. Hinckley, G.N. Brown Jan 1973

Changes In Polysomes Of Black Locust Seedlings During Dehydration-Rehydration Cycles, James R. Brandle, P.D. Schnare, T.M. Hinckley, G.N. Brown

School of Natural Resources: Faculty Publications

No abstract provided.


Nebraska Wild Flowers, Robert C. Lommasson, Paul Lommasson (Depositor) Jan 1973

Nebraska Wild Flowers, Robert C. Lommasson, Paul Lommasson (Depositor)

School of Natural Resources: Faculty Publications

This book is an attempt to present to the general public representative types of many of the conspicuous wild flowers found in Nebraska. These 260-some plants in no way constitute a flora of Nebraska which would number some 1,700 species of flowering plants. Included herein are both native and naturalized flowering herbaceous plants exclusive of the grasses and grasslike plants. Among these are plants that have had a long existence here and others which have recently invaded our area. Some are highly cherished and others are considered as common weeds. Excluded from this book are woody plants, such as trees, …


Social And Cultural Impact Of A Proposed Reservoir On A Rural Kentucky School District, Charles R. Smith, Philip Drucker Jan 1973

Social And Cultural Impact Of A Proposed Reservoir On A Rural Kentucky School District, Charles R. Smith, Philip Drucker

KWRRI Research Reports

This study utilizes anthropological concepts and research methods to study the educational system of a Central Kentucky school district with the goal of predicting the impact on it of a proposed multi-purpose (flood control, recreation, etc.) reservoir, and proposing options for forestalling dysfunctional aspects of that impact. The impact will result from the fact that although the county is now rurally oriented, the proposed reservoir will attract (has already begun to attract) urbanite residents from nearby Louisville, Kentucky's largest urban center, who can be expected to bring urban values concerning education, as well as other areas. To assess probable directions …


Urban Geology: Master Plan For California, California Division Of Mines And Geology Jan 1973

Urban Geology: Master Plan For California, California Division Of Mines And Geology

California Agencies

The nature, magnitude, and costs of geologic hazards in California and recommendations for their mitigation.


Sport Hunting As A Method Of Damage Control, L. Boddicker Jan 1973

Sport Hunting As A Method Of Damage Control, L. Boddicker

Great Plains Wildlife Damage Control Workshop Proceedings

Predator damage control is an area of concern to the livestock producer. He is also often the most likely person to choose sport hunting of coyotes as a recreational activity. Sport hunting of problem coyotes can be an effective tool.

Agricultural producers want to know the skills to control depredating wildlife. A high powered rifle, traps, and various related equipment are standard for most livestock production operations.

Through the Extension effort we attempt to help the producer develop wildlife damage control skills. It is also our responsibility to help develop alternatives to aid the livestock producer with persistent wildlife damage …


On The Bordism Ring Of Complex Projective Space, Claude Schochet Jan 1973

On The Bordism Ring Of Complex Projective Space, Claude Schochet

Mathematics Faculty Research Publications

The bordism ring MU∗(CP) is central to the theory of formal groups as applied by D. Quillen, J. F. Adams, and others recently to complex cobordism. In the present paper, rings E∗(CP) are considered, where E is an oriented ring spectrum, R=π∗(E), and pR=0 for a prime p. It is known that E∗(CP) is freely generated as an R-module by elements {βτ|r≧0}. The ring structure, however, is not known. It is shown that the elements {β …


Secular Climatic Fluctuations In Southwestern Colorado, Raymond S. Bradley, Roger G. Barry Jan 1973

Secular Climatic Fluctuations In Southwestern Colorado, Raymond S. Bradley, Roger G. Barry

Raymond S Bradley

Precipitation and temperature data since records began in southwestern Colorado arc analyzed on a seasonal basis. Interstation correlations for recent years indicate that the region responds fairly uniformly to seasonal variations in precipitation, but this was not true earlier this century when precipitation variability was higher. Changes in the dependence of precipitation on elevation are also shown. Annual precipitation totals were low about 1860, 1900, 1930-35 and 1950-55. Mean annual temperatures appear to have fallen from about 1867 to about 1930 when the trend reversed. Overall, the climate of southwestern Colorado in the 1860s appears to have been warmer and …


Neutron Scattering And The Dispersion Relation In He Ii At Small Momentum Transfer, Robert Hallock Jan 1973

Neutron Scattering And The Dispersion Relation In He Ii At Small Momentum Transfer, Robert Hallock

Robert Hallock

Weighted-least-squares fits to the small momentum transfer (k≤1 Å-1) results of Woods and Cowley have been carried out. We find that the neutron data presently available (i) are not of sufficient accuracy to determine whether or not quadratic terms are present in the dispersion relation and (ii) weakly favor positive dispersion in the absence of the quadratic term.


Brief Theory Of Coherent Processor, Richard C. Heyser Jan 1973

Brief Theory Of Coherent Processor, Richard C. Heyser

Unpublished Writings

The particular coherent data processor which is to be discussed relies heavily upon several basic concepts. These concepts represent a departure from conventional practice and hence the theoretical description must await their presentation in order to gain some continuity. We will accordingly present the underlying assumptions and signal physics prior to description of the processor itself.


Ferroxidase-Ii: A Blood Serum Lipo-Protein, Christine Shih Ming Sung Jan 1973

Ferroxidase-Ii: A Blood Serum Lipo-Protein, Christine Shih Ming Sung

Master's Theses

Ferroxidase-II was definitely identified as a lipoprotein. Cholesterol and phospholipids remained tightly associated with the ferroxidase-II protein following extensive purification. Quantitative analysis showed that it is a high-density lipoprotein. Thin-layer chromatographic analyses indicated that phosphatidylcholine accounts for the majority of the bound phospholipid with lysophosphatidyl choline and sphingomyel in accounting for the remaining phospholipid.

Treatment of purified ferroxidase-II with phospholipase C or A resulted in a loss of ferroxidase activity which paralleled the hydrolysis of phospholipid. Phospholipid D treatment also resulted in the loss of ferroxidase activity, yet the loss was not as great as with other phospholipases. A lipid-depleted …


Crayfish, Leech, And Snail Control Jan 1973

Crayfish, Leech, And Snail Control

Great Plains Wildlife Damage Control Workshop Proceedings

We have effective results in controlling crayfish in our ponds using Baytex. Baytex is a higly toxic compound that effects the nervous system of many organisms. Used in small concentrations it will kill crayfish without hurting fish. We use Baytex at 40 ppb. We normally dilute the required amount of chemical with water and then mix it thoroughly in the pond. Leeches can be controlled using Dylox. Masoten is another trade name for dylox. The recommended rate of application is 1/2 ppm. This should be applied in a manner so it is thoroughly mixed in the ground. Recommened treatment for …


Summary, Dan F. Dickneite Jan 1973

Summary, Dan F. Dickneite

Great Plains Wildlife Damage Control Workshop Proceedings

During this workshop we have heard from some of the leading animal damage control and livestock management specialists in the Great Plains and adjoining states. It appears that western states personnel will likely be involved in wild animal damage control to a greater extent than before as control activities are passed from federal to the separate state agencies--hopefully, with financial assistance for both implementation and research.

There is no widespread agreement on numbers or severity of damage, or on the best damage control techniques to use. What works in one area of the country will not necessarily work in another. …


How Important Are Livestock Management Methods To The Orevention And /Or Reduction Of Losses To Coyotes, Don Good Jan 1973

How Important Are Livestock Management Methods To The Orevention And /Or Reduction Of Losses To Coyotes, Don Good

Great Plains Wildlife Damage Control Workshop Proceedings

Professor.E. K. Faulkner, Extension Sheep Specialist from the University of Wyoming, stated that fencing the range was too expensive to be practical. He indicated that flares, pop-guns, color painting on sheep, and dogs have been used to cut down losses to coyotes but these methods have not been nearly so effective as the use of cyanide guns and 1080. He also indicated that losses to coyotes along with labor problems are the number 1 and 2 reasons for 200 sheepmen going out of the business the past 5 years in the range country. He said that shed lambing or lambing …


Using Population Mechanics In Management Schemes, Frederick F. Knowlton Jan 1973

Using Population Mechanics In Management Schemes, Frederick F. Knowlton

Great Plains Wildlife Damage Control Workshop Proceedings

I. Why do we try to manage natural systems?

II. A Wildlife Management Perspective.

III. The challenge of managing carnivores.

IV. Does predation really occur?

V. Historically we have been faced with depredation problems and have been unable to resolve them when and where they arose.

VI. There have been vast changes in public sentiment and values.

VII. Let's look at some biological inputs ( coyotes).

VIII. Additional comments on meeting the problems when and where they occur.

IX. Selected readings.


Extension Wildlife Damage Control In Arkansas, Rocky Lynch Jan 1973

Extension Wildlife Damage Control In Arkansas, Rocky Lynch

Great Plains Wildlife Damage Control Workshop Proceedings

With the curtailment of a service type predator control program that existed in Arkansas for 29 years, the Arkansas Game and Fish Commission in 1970 initiated a Nuisance Animal Control Section within the framework of the Commissions' Game Division. This extension - demonstration type wildlife control unit was named such because of the increase in rodent control (beaver and muskrat) within the state. Their numbers were spawned by the habitat inhancement in the delta and timber growing regions of Arkansas.

A Game Biologist visited the Missouri Department of Conservation and observed the technique of their predator control agent. With ideas …


Long Range Objectives Of The Federal Government In Coyote Management, James B. Ruch Jan 1973

Long Range Objectives Of The Federal Government In Coyote Management, James B. Ruch

Great Plains Wildlife Damage Control Workshop Proceedings

Introduction.

History.

Present Efforts to Change.

Research.

Interim Measures.

1973 Legislation.

State Actions Needed.

Conclusion.


Activities Of The Advisory Committee On Scientific And Natural Areas, Robert W. Burwell Jan 1973

Activities Of The Advisory Committee On Scientific And Natural Areas, Robert W. Burwell

Journal of the Minnesota Academy of Science

Significant actions taken by the Commissioner, Department of Natural Resources of the State of Minnesota, on recommendations of the Advisory Committee on Scientific and Natural Areas includes: issuance of policy statements and directives establishing criteria for defining and classifying scientific and natural areas; and rules and regulations applicable to such areas. Listed are the first four areas recommended for official designation. The status of an inventory of scientific and natural areas is summarized, and a description is given of the Advisory Committee procedure for processing recommendations for establishment of areas to be officially designated by the state.


A Pycnometer Of Improved Design, Richard Moore Jan 1973

A Pycnometer Of Improved Design, Richard Moore

Journal of the Minnesota Academy of Science

The density of a solution must be known to laboratory medicine , biochemistry, and physical chemistry. Knowledge of the density may permit calculation of solution concentration, solute molecular weight, solute partial, or specific volume , for example. Therefore, the determination of the density of a solution is a measurement which must be made with precision, accuracy, and sensitivity. This report describes a pycnometer which permits making such measurements.


The Evaluation Of Glasser's Maximum Likelihood Method On Missing Data In Regression, Gayle M. Yamasaki Jan 1973

The Evaluation Of Glasser's Maximum Likelihood Method On Missing Data In Regression, Gayle M. Yamasaki

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Missing data in regression is often a problem to research workers because standard regression methods are applicable only to complete data sets. At present there are three general methods for solving the problem of missing data.

At first, the reduced data method, reduces the incomplete data set to a complete data set before analyzing. Although this method is very simple to apply, substantial amounts of information are sometimes lost when data is eliminated. This results in less precise estimates of the regression parameters.

The second method, generalized least squares, estimates the missing values through least squares techniques, thus obtaining a …