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Land Grading In South West Irrigation Areas, 1966-67, Department Of Agriculture, Western Australia

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

Land grading in the South West Irrigation Areas with modern earth moving equipment first commenced in 1949.

The advantages of land grading are well recognised by farmers and this season grading operations were carried out on 208 farms.

The Hamel Nursery, K S. Cole

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

A LITTLE known, but highly productive use of irrigation water occurs at the Forestry Department Nursery, Hamel.

Seedlings of trees and shrubs are raised during the summer for sale the following winter.

Sales are made to the farming community and many trees are used by the Forest Department in its reafforestation programmes.

Phalaris Staggers : Prevention By Cobalt Bullets, Bryan J. Gorddard, P. P. Mann, A. J. Hadlow

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

FARMERS in the south west of Western Australia are familiar with the use of cobalt for the prevention of ill-thrift and deaths due to cobalt deficiency in sheep and cattle.

Less common is the use of cobalt for the prevention of chronic phalaris poisoning, known as phalaris staggers.

This condition is well known in eastern Australia, but only isolated cases have been recorded in W.A. no doubt due to the relatively small area sown to phalaris in this state.

A New Species Of Rhinoceros, Aphelops Kimballensis, From The Latest Pliocene Of Nebraska, Lloyd G. Tanner

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

An uncrushed skull and associated skeletal elements of a very large rhinoceros are the basis for the description of a new species of Aphelops from Frontier County, Nebraska. The major differences are: the skull is much larger in most dimensions than other Aphelops; it has an extremely elevated occipital region in comparison to Aphelops mutilus; the narial notch is retracted to a point perpendicular to the center of molar one; and the teeth are more hypsodont than any other species of this genus. The sediments which yielded the skull and skeletal parts are considered to be Kimballian in …

The Monotypic North American Subgenus Larandrena Of Andrena (Hymenoptera: Apoidea), D. W. Ribble

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

Larandrena contains a single species, A. miserabilis Cresson. This small, common Andrena is found throughout most of the United States and southern Canada in the spring. The subgeneric position, nomenclature, redescription. variation, notes on the biology, parasites, range, seasonal activity and plant host records are included. A. rniserabilis is thought to be an important pollinator of fruit trees.

Citellus Kimballensis, A New Late Pliocene Ground Squirrel, Douglas C. Kent

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

A new fossil sciurid, Citellus kimballensis, is described. This new species was found in the Kimball Formation, uppermost Ogallala (very late Pliocene) at the University of Nebraska State Museum Collecting Locality Cn-1O1, northeast of Sidney, Cheyenne County, Nebraska. Characters of the dentition and skull of C. kimballensis are compared with those of other species of the genus, and with those of Cynomys.

The Brule-Gering (Oligocene-Miocene) Contact In The Wildcat Ridge Area Of Western Nebraska, C. Bertrand Schultz, Charles H. Falkenbach, Carl F. Vondra

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

The contact between the Brule Formation (Oligocene) and the Gering Formation (Miocene) can be readily distinguished in the Wildcat Ridge area, as elsewhere in western Nebraska. At the critical fossiliferous exposures at Castle Rock in Scotts Bluff County, the contact on the south face between the two formations is defined as 129 feet above the base of the "Upper Ash" bed, which corresponds to the upper portion of Darton's (1899, PI. C, Fig. D, following p. 754) "sandy phase" in the upper part of the Brule. Certain key beds in the Gering Formation can be traced laterally from a channel …

Fertilisers For The Wheatbelt, William John Toms

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

A review of fertiliser research findings and recommendations for fertiliser applications to crops and pastures in the 12 to 15 inch rainfall areas.

NOT long ago, fertiliser to the cereal grower meant only superphosphate for cropping. Today, phosphorus, sulphur, nitrogen, copper, zinc and molybdenum are all important, and the needs of improved pastures must be considered as well as those of cereals.

The Effects Of Shearing Time And Stocking Rate On Wool Production, R J. Lightfoot

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

THE results of the first experiment comparing "autumn" versus "spring" shearing over a two-year period were published in 1960.

In this experiment the autumn-shorn ewes cut heavier greasy fleeces (even though they also reared considerably more lambs) with less tender wool, resulting in a higher average return per head from this group.

The autumn-shorn wool carried more seed, was less attractive and contained relatively more pieces than did the spring-shorn wool.

Determination Of Larval Instars Of The Rice Weevil Sitophilus Oryzae (L.) (Coleoptera: Curculionidae) In Wheat, A. E. O'Donnell

Journal of the Arkansas Academy of Science

No abstract provided.

Preliminary Studies On A One-Year-Old Field At The Cedar Creek Natural History Area, Minnesota, Dennis T. Disrud

Journal of the Minnesota Academy of Science

Qualitative and quantitative data are reported from a 12-acre one-year-old field composed of two 6-acre strips of diverse history. Frequency and density of angiosperms were recorded from 70 ½ x ¼ meter quadrats during July, August, and September of 1965. Seventy-two species and varieties in 57 genera and 28 families are represented in collections from this field. Twenty-six species were recorded from the quadrats sampled, representing 36.l per cent of the total number collected. Vegetation present during the first year following abandonment was composed primarily of and dominated by annual forbs; dominants included Ambrosia artemisiifolia, Chenopodium leptophyllum, Mollugo verticillata, Polygonum …

Recommendations For The Establishment Of Harbinger Medic In The Northern Wheatbelt, R J. Parkin

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

Harbinger is an early-maturing medic that has met with success on some soil types, especially in the northern wheatbelt.

Similar to Cyprus barrel medic but best suited to different soil types, harbinger adds to the range of pasture legumes available for sowing in under 16 in. annual rainfall areas.

The Australian Field Cricket, J A. Button

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

THE Australian field cricket, or the black field cricket as it is sometimes known, is a native of Australia and is widely distributed throughout the south western, south and south eastern sections of the continent.

Sympatry Changes And Hybridization Incidence In Mallards And Black Ducks, Paul A. Johnsgard

Papers in Ornithology

Changes in general fall and winter distributions of Mallards and Black Ducks over the past century have resulted in markedly increased sympatric contact during pair formation between these two forms, and have been responsible for increased opportunities for hybridization. Bureau of Sport Fisheries and Wildlife records of hybrids from 34 states indicate a minimal current hybridization rate that is about 4% of the frequency expected on the basis of mating according to mathematical probabilities of chance contact. Thus, hybridization is most frequent where both forms are almost equally abundant, indicating that no reinforcement of differences reducing hybridization in the primary …

Survey Of The Venezuelan Species Of Ficus, David Walter Hall

College of Graduate Studies: Theses & Dissertations (1964–2006)

This study was undertaken to provide a circumscription of the genus Ficus in Venezuela. The material studied was representative of the collections that have been made throughout the country. A great portion of Venezuela is apparently unexplored botanically. With this in mind I have attempted to do as complete a study as possible with the material available with fully realizing the many limitations. this circumscription is intended as a starting point for future work,not a stopping place.

Effectiveness Of Titanium Dioxide In Beater And Coating Applications, Alptekin Akman

Paper Engineering Senior Theses

Titanium dioxide has been used as a filler and coating pigment in the manufacture of paper products for many years. In addition to its ability to make papers whiter and brighter, it is a most important opacifying material.

Since brightness, whiteness, and opacity are very important properties of paper, this report deals with beater applications where the pigment serves to brighten and opacify the sheet with minimum loading or filling, coating applications, and the combination of both. The effectiveness of the titanium dioxide is investigated by testing the coated and the loaded hand sheets for brightness, opacity, and gloss.

"Fractional Labeling": The Fraction Of Actively Forming Osteons That Take Tetracycline Labels In Normal Human Bone, T. Rush, D. Pirok, H. M. Frost

Henry Ford Hospital Medical Journal

No abstract provided.

Host And Prophage Modifications Of Ultraviolet Induction In Salmonella Potsdam, Bela B. Toth

Loma Linda University Electronic Theses, Dissertations & Projects

In induction experiments with naturally occurring and artificially lysogenic strains of S. potsdam, cells were irradiated in buffer, transferred to complete medium, and then assayed for free phage. Irradiation was followed by half hourly samples for free phage from the growing populations of irradiated cells. For an estimation of burst sizes, the irradiated cells were diluted out to a final concentration of 1 cell per ml and distributed to tubes in 0.5 ml quantities. All assays were done by the top-layer method with streptomycin incorporated in the top-layer and SP2-str^r as the bacterial indicator. The non-lysogenic strain S. …

Biochemical Properties Of Salmonella Potsdam Bacteriophage P4/2, Clyde L. Roggenkamp

Loma Linda University Electronic Theses, Dissertations & Projects

Over 90% recovery of phage P4/2 was realized with differential centrifugation concentration and purification, whereas only about 16% was recovered from the aqueous two-phase polymer - Genetron - ECTEOLA-cellulose column system. Purity of preparations was greatest with the density gradient centrifugation (A₂₆₀ = 2.66 and A₂₈₀ = 1.80 per 10¹² plaque-forming units). With the chemical system of concentration and purification followed by an ECTEOLA anion exchange run, the A₂₆₀ was 6.6 and the A₂₈₀ was 4.3.

Three tests were employed to determine the configuration of P4/2 DNA: (1) a formalin denaturation test, (2) a thermal …

The Fecal Shedding Of Listeria Monocytogenes By Conventional And "Germ Free" Mice, Margaret Joyce Ramsay

Loma Linda University Electronic Theses, Dissertations & Projects

A series of experiments involving Listeria monocytogenes was undertaken to study first the fecal shedding of Listeria by conventional mice challenged intraperitoneally with Listeria and second the fecal shedding and ability to survive of germ free mice with similar challenge. In addition, mites infesting Listeria infected mice were cultured for their possible contamination by Listeria.

Conventional mice were challenged intraperitoneally with a single near LD₅₀ dose of Listeria. Fecal Listeria were detected by collecting specimens from each mouse daily for the first 4 days and every second day thereafter. The feces was held at 7°C for 14 …

A Comparative Approach Into The Differentiation Of Two Strains Of Staphylococci, Walter D. Hoeksema

Masters Theses

Introduction

The purpose of this investigation was to differentiate Staphylococcus aureus phage type 42D from Staphylococcus epidermidis.

The investigation involved four approaches to this differentiation. The first was a selective screening technique on specific media to point out physical and biochemical characteristics and to demonstrate the presence of specific enzymes. The second was a drug survey which was used to show basic susceptibility and resistance to ten different antibiotics. The third was ultra-violet irradiation which was used to discern susceptibility and resistance to the soft rays of this spectrum segment. The fourth was a chromatographic procedure using labeled carbon which …

Isolation Of A Toxic Substance From Centaurea Repens, Merton E. Sprengel

Loma Linda University Electronic Theses, Dissertations & Projects

A poisonous steroid-type compound was isolated from Centaurea repens. After extraction with absolute ethanol, removal of the solvent, addition of 2% HCl to precipitate the pigments, and filtering, the pH was adjusted to 9 with aqueous anunonia. This solution was exhaustively extracted with chloroform, evaporated to dryness, and extracted with ethyl ether.

This fraction was chromatographed on silica-gel plates, using 10:1 1,2-dichloroethane-methanol as the developer. The band at Rf 4.2 was removed and found toxic to mice. Labored, slow, gasping respiration and frequent involuntary muscular contractions became apparent within a few minutes following the intraperitoneal injection into each animal. Death …

Development, Verification, And Use Of Methods To Model Chemical And Thermal Processes Lakes Mead And Powell, Bureau Of Reclamation

Publications (WR)

PURPOSE The purpose of the proposed research is to quantify the effects that Lakes Mead and Powell have on the salinity in the Colorado River system, and to evaluate changes that cap be made to the operating system of the reservoirs (within legal/institutional constraints) to enhance salt precipitation and/or minimize evaporation within the reservoirs. The effect of any changes (i.e., selective withdrawal uses, pumped storage, etc.) on reservoir evaporation could also be evaluated with a goal of minimizing evaporation. This will be accomplished through the development of a mathematical model of the reservoirs as described below. BACKGROUND Two major problems …

Normal Histological, Tetracycline And Dynamic Parameters In Human, Mineralized Bone Sections, D. J. Pirok, J. R. Ramser, H. Takahashi, A. R. Villanueva, H. M. Frost

Henry Ford Hospital Medical Journal

No abstract provided.

A Comparative Study Of The 5- And 3-Meal Plans In Six Convalescent Hospitals In San Bernardino County, Donna J. Meek

Loma Linda University Electronic Theses, Dissertations & Projects

A study comparing the 3- and 5-meal plans of food service, as used in long-stay geriatric units in San Bernardino County, have been compared. Three homes utilizing the 5-meal plan and three utilizing the 3-meal plan, to serve as controls, were chosen. A random sample of ten patients from each home was observed for three days to find the daily average nutrients in the foods served, eaten, and wasted. Also, interviews to compare factual information and attitudes were utilized for sample patients and personnel. The nutritional data was analyzed on the computer.

The results indicated that those on the 5-meal …

Department Of Entomology Newsletter - No. 2, 1966, D. W. Ribble

Hexapod Herald and Other Entomology Department Newsletters

Lawrence Bruner - Pioneer Nebraska Entomologist

Bruner Entomology Club

New Department Facilities

Staff: Lloyd W. Andersen, Nina Jeffrey, Aline N. Bare, Esther A. Schock, Calvin M. Jones, Robert E. Roselle, Roscoe E. Hill, Arthur F. Hagen, Kenneth P. Pruess, Terrance L. Dukes, Ahmed M. Kadoum, S. Dean Kindler, Robert Staples, Harold J. Ball, Donald E. Lawson, Gerald T. Weekman, George R. Manglitz, John F. Hermanussen, Walter R. Akeson, Henry Stevens, Johnny M. Perdue, James M. Schalk, Warren T. At yeo, J erold H. L. Bell, Jon J. Rhine

Graduate Students: Khogali Ahmed, David L. Keith, J. Derril Munson, Saad Elfaki, …

An Ecological Study Of Ditylenchus Dipsaci (Kuhn) Filipjev. In A Field Of Alfalfa, Shu-Ten Tseng

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Ditylenchus dipsaci (Kuhn) Filipjev. is one of the most destructive nematodes to crop plants. It attacks and damages more than 300 species of cultivated and uncultivated plants. The nematode can be differentiated into many races, each of them having a preference for a group or even a single plant species.

Alfalfa stem nematode is one of the races in this species which attacks the above ground portion of alfalfa but does not infest the roots. Larvae of this nematode may migrate from the plant tissue to soil in moist conditions. These nematodes migrate actively to nearby plants or are carried …

A Two Year Course Outline In Quantity Foods For Intermountain High School Girls, June C. Larson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The Bureau of Indian Affairs has recently completed or is now in the process of building 19 new grade schools on the Navajo reservation. Some of these schools are boarding schools, and some are day schools, but each new school needs school lunch personnel. To meet this need intermountain School added to their curriculum a course in Quantity Foods to be given to Junior and Senior High School girls as a two year vocation. This necessitated the development of a 2 year course outline for the 2 year Quantity Food class, which gave the girls 4 hours daily practical training …

Some Biochemical Changes Occurring In Tomato Fruit Ripened By Several Treatments, Arthur A. Boe

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The ripening of fruit, aside from its economic consequence, is of importance in the study of the development and physiology of plants. The fruit, being the reproductive organ of the plant, is fundamentally necessary for the continuation of the species. The production of fruit is also of major economic importance.

The fruit is nurtured, not only by its own ability when young to produce carbohydrates by photosynthesis, but also by the translocation of sugar and other compounds produced in the leaves. While young, the fruit appears to function as the modified leaf that it is believed to be. It is …

Iowa Junior Academy Of Science: The Thirty-Fourth Convention, April 15 And 16, 1966, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.