Digital Commons Network^™

Group-Phase Velocity Demonstrator, Robert Katz

Robert Katz Publications

The speed with which the concepts of group velocity, phase velocity, and beats are grasped, integrated, and retained can be materially aided with the following simple demonstration apparatus.

Use Of A Simple Blowing Device To Facilitate Inspection Of Wheat For Internal Infestation, Max Milner, E. P. Farrell, Robert Katz

Robert Katz Publications

Enforcement of sanitary practices in the commercial handling of wheat, particularly with reference to insect infestation, requires a method of inspection of wheat for internal or hidden insect infestation which is reliable, yet rapid enough for routine use. A number of inspection methods have been developed for this purpose, and a review has been published (1) of those proposed up to two years ago. A rigorous evaluation of several of these techniques has been made recently (2).

The rapid inspection method suggested to the grain trade by the Food and Drug Administration (2), based on the results of an extensive …

The Soil Our Basic Asset, J E. Watson

Journal of the Department of Agriculture, Western Australia, Series 3

Contour furrows increase pasture growth

Good pastures on steep slopes will give profitable returns from grazing, and will also reduce erosion risks. Water needed for pasture growth on such slopes must not be allowed to run off and erode lower slopes. The use of contour furrows is a readily applied erosion control measure which can be very effective in increasing the amount of water held and absorbed on steep slopes.

Make The Best Use Of Your Rainfall, J E. Watson

Journal of the Department of Agriculture, Western Australia, Series 3

Farmers are not always satisfied with the rain that falls on their farms—it is often too little, too much, too soon or too late. However, the farmer has a very great responsibility to make the best use of the rain he gets, and if he gets too much, to see that the excess can flow down to the rivers without causing damage.

Sunrise And Sunset Times For May-June 1952

Journal of the Department of Agriculture, Western Australia, Series 3

Supplied by the Government Astronomer

Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on …

Stream Pollution, Ruth Patrick

United States Environmental Protection Agency: Publications

This paper discusses the various ways in which aquatic organisms may be of use in solving problems associated with waste disposal. Since many state and federal laws set forth that nothing may be discharged that is deleterious to aquatic life, the most expedient way to determine the effect of an effluent is to study the aquatic organisms themselves.

In every river that has not been adversely affected by pollution there is a great variety of aquatic life. These organisms do not represent a great mass of living things, but rather they are organized into an intricately balance systems, often referred …

On The Prime Ideals Of The Ring Of Entire Functions, Melvin Henriksen

All HMC Faculty Publications and Research

Let R be the ring of entire functions, and let K be the complex field. In an earlier paper [6], the author investigated the ideal structure of R, particular attention being paid to the maximal ideals. In 1946, Schilling [9, Lemma 5] stated that every prime ideal of R is maximal. Recently, I. Kaplansky pointed out to the author (in conversation) that this statement is false, and constructed a non maximal prime ideal of R (see Theorem 1(a), below). The purpose of the present paper is to investigate these nonmaximal prime ideals and their residue class fields. The author is …

A Survey Of Farm-Game Habitat Restoration Programs In Fifteen States, William H. Marshall

Other Publications in Wildlife Management

For at least twenty years the thinking of wildlife managers has been directed toward the importance of habitat in producing surplus game populations for hunting. The decline or disappearance of game populations - often over considerable areas - following changes in habitat brought about by agricultural, urban, or industrial developments demonstrates clearly the effects of the elimination of desirable habitat. Suitable habitat is basic to the survival of wildlife. Many field observations and experiences, as well as specific data from research, validate this conclusion. Where a harvestable surplus of game cannot be maintained because of changes made by man in …

On Rings Of Entire Functions Of Finite Order, Melvin Henriksen

All HMC Faculty Publications and Research

In an earlier paper, the author showed that if M is any maximal ideal of R, the residue class field R/M is isomorphic with the complex field K. In this paper, under some restrictions, this theorem is extended to the ring R_λ of all entire functions of order no greater than λ, and hence to R*.

Sunrise And Sunset Times For March-April, 1953

Journal of the Department of Agriculture, Western Australia, Series 3

State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would appear earlier.

[Supplied by the Government Astronomer]

Studies Of The Kinetics Of Electrode Processes., George Louis Stiehl

LSU Historical Dissertations and Theses

No abstract provided.

Acetic-Oxalic Anhydride. Part I. A Study Of Some N-Alkyl-Cyclohexylcarbinols. Part Ii., Walter Maurey Henley

LSU Historical Dissertations and Theses

No abstract provided.

Correlation Of The Miocene Of The Florida Panhandle With The Western And Central Gulf States., Harbans Singh Puri

LSU Historical Dissertations and Theses

No abstract provided.

Ionic Exchange In Soils: I. Measurement Of The Exchange Reaction By Means Of An Ion Exchange, D. A. Brown

Journal of the Arkansas Academy of Science

No abstract provided.

Ceramic Uses Of Arkansas Nepheline Syenite, Harry J. Reynolds

Journal of the Arkansas Academy of Science

No abstract provided.

Apparatus For The Measurement Of Atmospheric Attenuation Of Light, John E. Lyon, Robert D. Woosley

Journal of the Arkansas Academy of Science

No abstract provided.

On Arkansas Microndrili, David Causey

Journal of the Arkansas Academy of Science

No abstract provided.

Wind Erosion Control—I, D J. Fleay

Journal of the Department of Agriculture, Western Australia, Series 3

Desserts have been formed in some parts of the world by the action of wind on once productive soils. This could happen to the light land areas of Western Australia if we do not profit by the lessons of the past and manage these soils with great care.

Thiocyanate Complexes Of Osmium, Craig Albert Townsend Jr.

University of the Pacific Theses and Dissertations

Osmium is a hard grey brittle metal which scratches glass. It has a melting point of 2700[degree]C, and a specific gravity of 22.4, which is greater than any other known substance. The grey color of osmium resembles the grey color of iron and ruthenium. Osmium was discovered in 1803 by Tennant in the insoluble residue remaining after treating an alloy of the platinum metals with acid.

Osmium occurs in nature alloyed with the other metals of the platinum group. One type of alloy includes all six of the of the platinum metals, osmium, iridium, platinum, ruthernium, rhodium and palladium. Osmium …

The Regeneration And Maintenance Of Wimmera Ryegrass Pastures Under Saline Soil Condition, F L. Shier

Journal of the Department of Agriculture, Western Australia, Series 3

Over the past ten years, Wimmera ryegrass pastures at the Salmon Gums Re- VJ search Station have been improved and maintained by periodic cultivation of the soil even without applications of superphosphate. On heavy crab-holey soil affected by high salt content and unsatisfactory for wheat growing, cultivation treatments have produced remarkably uniform stands of Wimmera ryegrass as shown in the accompanying pictures. The bare patches due to salt, have been largely eliminated. If the interval between cultivations is more than three years Wimmera pastures deteriorate badly.

Sunrise And Sunset Tables Times For Jan.-Feb., 1953

Journal of the Department of Agriculture, Western Australia, Series 3

Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would appear …

Soil Conservation Service - Basis Of Co-Operation, G H. Burvill

Journal of the Department of Agriculture, Western Australia, Series 3

The Soil Conservation Service has been established as provided in the Soil Conservation Act, 1945. To carry out its objectives will require the co-operation with it of individual farmers and landholders. The policy of the Service is therefore to encourage farmers to help themselves, and particularly to encourage them to recognise the need for soil conservation methods and for soil erosion control in the early stages. More particularly, the Service aims to provide, through its trained staff, technical asistance in the way of agricultural advice, research, conservation, planning, layouts and surveys. As indicated below, under the heading "Charges for Soil …

Pleistocene Evolution Of The Ohio And Wabash Valleys, William J. Wayne

Department of Earth and Atmospheric Sciences: Faculty Publications

Studies of drift thickness and character currently in progress in Indiana indicate changes in drainage that have occurred in Indiana and some adjoining states since the beginning of the Pleistocene epoch. After late Tertiary (Lexington) peneplanation the master-drainage line, the Mahomet-Teays Valley system, became entrenched about 200 feet below its former level before it was ponded by Nebraskan ice and diverted into a new course. During the Parker cycle, which was interrupted by glaciation, the present physiographic features of southern Indiana and their now buried extensions to the north became recognizable. Static rejuvenation then was a major factor in erosion …

Report On Historical Investigation Of Wounded Knee Battlefield Site, Pine Ridge Indian Reservation, South Dakota, Merrill J. Mattes

United States National Park Service: Publications

In April 1952, the National Park Service was requested by Representative E. Y. Berry of South Dakota, to consider the possibility of giving national recognition to Wounded Knee Battlefield, on the Pine Ridge Indian Reservation of South Dakota. Limited Date on the battlefield was presented on April 22 to the Advisory Board on National Parks, Historic Sites, Buildings, and Monuments. The Board asked that a field investigation and report be made by the Service to secure more comprehensive data. The Region Two office was requested to conduct this investigation by a note appended to Mr. Tolson's letter of May 9 …

Convexity And Starlikeness Of Analytic Functions, Wimberly C. Royster

Mathematics Faculty Publications

No abstract provided.

Soil-Saving Schools

Journal of the Department of Agriculture, Western Australia, Series 3

Save the soil for your sons and grandsons," or "Every farmer his own soil conservationist" might well serve as slogans for the recently-inaugurated farmers' schools organised in this State by the Soil Conservation Service. Judging by the enthusiasm shown by pupils at the first two schools, held in August last, this highly practical approach to an important subject seems destined to usher in an entirely new conception of soil conservation work as it affects the individual land-owner.

Sunrise And Sunset Tables

Journal of the Department of Agriculture, Western Australia, Series 3

Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun's disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would appear …

The Hose U-Tube Level, J P. Fallon

Journal of the Department of Agriculture, Western Australia, Series 3

With the growing use of soil conservation practices throughout the farming areas, there has been an increasing demand for a simple levelling device that will enable farmers to take their own levels. When they have become familiar with the use of pasture furrows, contour banks and the various other mechanical erosion control measures, farmers with the aid of such an instrument would be able to make an immediate start on an erosion control programme. The instrument would also prove useful for numerous small jobs around the farm when accurate levels are required. Tests have shown the "Hose U-Tube Level" here …

Soil Conservation Farming. List Of Farmers Who Are Using Contour Practices

Journal of the Department of Agriculture, Western Australia, Series 3

A list of farmers known to be using contour practices for soil conservation, is printed at the end of this note. It will enable other interested farmers to find and see something of such methods. Now is considered an appropriate time to publish this list as many farmers will shortly be travelling through the countryside to agricultural shows and field days.

Sunrise And Sunset Times For Sept.-Oct., 1952

Journal of the Department of Agriculture, Western Australia, Series 3

Times of sunrise and sunset for every fifth day, are given for a number of towns throughout the State. Times for a town not on the list may be estimated if its position in relation to one or more of the listed towns is known. The times given for sunrise are those of the first appearance of the top edge of the sun over a true horizon; those for sunset give the time of the sun s disappearance below a true horizon. Situation in a valley would make the sun appear to rise later, and on a hill it would …