Digital Commons Network^™

Development Of Water Quality Criteria For Aquatic Life, Clarence M. Tarzwell

United States Environmental Protection Agency: Publications

It is now recognized that water pollution is an important problem, that it becomes more widespread and serious as population and industry expand, and that something must be done if aquatic life resource are to be saved and their productivity maintained. In the past there has been a great deal of uncertainty in approaching this situation and a general lack of understanding of the details and ramification of the overall problem. In the efforts for the abatement of pollution, only a few clearcut objectives have been established. Knowledge is lacking as to what the objectives should be. There is still …

Kinetic Investigation Of The Hydrochlorination Of Olefins In Aprotic Solvents And Sulfonation Of Idobenzene And The Selectivity Relation, Thomas Glen Davies

Theses and Dissertations

Kinetic investigation of the hydrochlorination of cyclohexene and cis-2-butene in n-heptane with SnCl4 as catalyst shows that the reaction is second order with respect to both olefin and catalyst. The specific rate constants at 25° , 0° and -23.8°C and the activation parameters were determined. Investigation of the Ga2Cl6 catalyzed hydrochlorination of cyclohexene and cis-2-butene in dichloromethane indicates that alkylation and polymerization compete with the hydrochlorination reaction in the presence of the solvent. The relative reaction rates and the isomer distribution for the sulfonation of iodobenzene by S35O3 have been determined in refluxing SO2 at -10°C. The reaction resulted in …

Sulfonation Of Chlorobenzene And The Selectivity Relation ; Bromine Addition To Cyclohexene In Dichloromethane ; Thorpe's Synthesis Of The Caged Acid, 4-Methyltricyclo[1.1.0.0[Superscript 2-4]] Butane-1,2,3-Tricarboxylic Acid, John A. Gurney

Theses and Dissertations

Aromatic sulfonation and some substitution reactions of chlorobenzene show deviations in the selectivity relation. A determination of chlorobenzene sulfonation provided the following rate ratio relative to benzene and partial rate factors: 1.0, [---] of 0.064 , mf 1.7 and pf 4. 2. Our work, Olah's nitration, Ferguson's bromination and Stock's chlorination define a new relation that can be express by adding an entropy term (A) to the selectivity relation. We determined the rate of bromine-cyclohexene addition in dichloro-methane at 0° to provide a basis for a systematic variation of solvents at low temperature. An unusual zero-order reaction was encountered. The …

A Study Of The Utilization Of Nursing Personnel On A Selected Hospital Unit, Lucille Mcdow

Loma Linda University Electronic Theses, Dissertations & Projects

This study was concerned with utilization of nursing personnel on a selected hospital unit. The purposes of the study were to: (1) show if the department was overstaffed or understaffed, (2) Indicate if there were too many students for the size of the department, (3) show how adjustments could he made within the department to equalize the nursing care provided to patients, and (4) see if it were possible to predict the proper number of personnel needed for optimum service.

The study was conducted on the seventeen-bed pediatric unit of a selected hospital. The descriptive survey was the method used …

Diffraction Of Spherical Scalar And Vector Waves At Axial Points Of A Circular Aperture And Disk, Keith Leon Mcdonald

Faculty Publications

The following work treats Kottler's saltus problem of diffraction of electromagnetic waves emitted by a Hertzian oscillator source and the analogous Kirchhoff's scalar problem of waves emitted by a point source. The medium is a homogeneous isotropic dielectric. In the vector case a new exact solution of the basic integrals is presented, at axial points only, (a) behind a circular aperture in a "black'' screen, and (b) behind its complementary "black'' disk. The relative time-averaged intensity of energy flow is plotted for the disk only. It is shown that the scalar theory predicts considerably larger values than the electromagnetic theory …

Effects Of Alternate Hot-And-Cold Treatment Following Hysterectomy, Teresa Eileen Holland

Loma Linda University Electronic Theses, Dissertations & Projects

This study was conducted to find out if the giving of alternate hot-and-cold treatments to the chest following abdominal hysterectomy would result in measurable benefits in improved patient comfort and rate of recovery. The White Memorial Hospital was selected as the control area and the Loma Linda Sanitarium and Hospital was selected as the experimental area.

Literature was reviewed to determine the value of wet heat and cold on the circulatory and respiratory system and whether or not their effects would be useful postoperatively.

Studies were further searched to find individual differences in the perception of pain. The influence of …

The Incidence Of Methods Of Postoperative Bladder Evacuation, Joan Marie Zabady

Loma Linda University Electronic Theses, Dissertations & Projects

The purposes of this descriptive survey were to (1) find out if the incidence of bladder infection could be reduced by decreasing the number of postoperative catheterizations, (2) find out what the incidence of current methods of postoperative bladder evacuation were, (3) find out if and what changes had occurred in the incidence of the methods of bladder evacuation since the publication of previous studies, and (4) discover the current relationships of the methods of bladder evacuation to various factors such as age, sex, marital status, admission status, type of operation, and type and length of anesthesia.

Need for the …

Stress-Corrosion Cracking Of Brass, Paul A. Fossey

Bachelors Theses and Reports, 1928 - 1970

the mechanism of stress-corrosion cracking of brass has been sought for many years. Investigators have proposed many mechanisms, but each of these mechanisms has always had several drawbacks. This paper presents an account of experimental work done in the laboratory on this subject and compares it to the work of previous investigations. It evaluates the mechanisms presented by investigators and shows the failures of these mechanisms. A theory of Nitrogen Embrittlement is presented and an evaluation of this theory with experimental work follows.

A Study Of The Reactions In The Formation Of Sulfoacetic Acid And Of The Preparation Of Pure Crystalline Sulfoacetic Acid, Barbara Jean Eichel

Chemistry Honors Papers

This 15 page thesis attempts to explain the difficulty in obtaining crystalline solids from sulfoacetic acid.

Some Decomposition Theorems For The Vector Space Of Matrix Summability Operators, Ed Kelly Jr., Tetsundo Sekiguchi

Journal of the Graduate Research Center

Consider the set T = {(aij) I aij are real } of matrix summability operators on the set B of bounded sequences of real numbers.

The Monadnock Volume 36, April 1962, Clark University Geographical Society

The Monadnock (Clark Geographical Society)

Volume 36 of The Monadnock. The Monadnock was the alumni magazine of the Clark University Geographical Society (1927-1985) (2014-present).

A Proof Of A Theorem On Giffin's Paradox, Don E. Edmondson

Journal of the Graduate Research Center

For the uninitiated, Giflin's paradox is the name of a condition from economic analysis. One considers a consumer with a certain income faced with the decision of how much of two goods to purchase. Intuitively, one anticipates that this will depend upon the prices to be paid for the goods, and anticipates that if a price is increased the amount purchased by the consumer will decrease ( the other price being constant). If it happens that with an increase in price of a good, the demand for that good increases, then this paradoxical situation is called Giflin's Paradox. The theorem …

On The Estimation Of Parameters When The Observations Are Subject To Measurement Error, Paul D. Minton, Vanamamalai Seshadri

Journal of the Graduate Research Center

Maximum likelihood estimation of parameters is considered in the situation where a measurement x is taken to mean "x + d." The maximum likelihood estimator for the parameter of the exponential distribution is found for this case and compared with the usual estimator.

A Geometrically Characterized Reference Frame For The Study Of Cartan Hypersurfaces In N-Dimensional Projective Space, W. Dale Maness

Journal of the Graduate Research Center

In the projective differential geometry of ordinary space a problem of fundamental importance is that of obtaining a covariantly determined reference frame for the definition of local point coordinates and associated power series developments for the equations of curves and surfaces. Much of the celebrated memoir [1] of G. M. Green was devoted to this problem for a surface or 2-dimensional Cartan variety. However, the complete geometric characterization of the reference frame used by Green was not completed until sixteen years later by Bell [2]. In this paper, an extension of Green's "relation R" is given for a linear (n-2)-space …

On Two Methods Of Unbiased Estimation With Auxiliary Variates, William (Bill) H. Williams

Publications and Research

No abstract provided.

Concluding Remarks Of Appreciation With Comments On Histoplasmosis And Cryptococcosis, Philip J. Spear

Vertebrate Pest Conference Proceedings: 1st (1962)

The record of this meeting will stand as a permanent tribute to Dr. Walter Howard and his associates. It should remind them for years to come of their worthwhile contribution in conceiving, organizing, promoting, and handling the details of this first Vertebrate Pest Control Conference. Those of us privileged to attend will be grateful for the opportunity to enlarge our acquain¬tance with the workers in the vertebrate pest control field, and to share in this exchange of information. The National Pest Control Association, whose members provide among other services, control of many vertebrate pests, draw information and guidance from many …

Infectious Disease Hazards To Pest Control Operators, Paul Arnstein Dvm, Mph

Vertebrate Pest Conference Proceedings: 1st (1962)

One of the primary reasons for controlling most vertebrate pests is the role these creatures play as links in the infection chain of certain agents pathogenic to man. It is reasonable to assume that the persons engaged in the eradication or removal of pests are at some risk of contacting zoonoses - diseases transmissible from animals to man. Unfortunately, histories or epidemiological data of occupational infections among pest control operators are not available; perhaps this society may become a future assembly point for statistics in this field. The hazards therefore have to be approached theoretically: diseases known to be associated …

Meeting The Meadow Mouse Menace, William D. Fitzwater

Vertebrate Pest Conference Proceedings: 1st (1962)

The orchardist has many ways to lose money but one of the best is to ignore his mouse problem. This apparently insignificant, short-tailed little rodent by his unobtrusive but systematic attacks on the growing tissue of trees can be very expensive. The Indiana Extension Horticulturist has stated that mice are the number one cause for orchardists going out of business in recent years in that State. Moreover, the problem is not a recent one as a questionnaire to county agricultural agents in 1924 (Davis, 1925) showed that field mice were even then considered a problem in 40 per cent of …

Mole And Woodrat Control, Rex E. Marsh

Vertebrate Pest Conference Proceedings: 1st (1962)

MOLES: In regions where moles thrive, lawns in golf courses, parks, cemeteries and home yards are often made unsightly by dirt mounds and ridges pushed up by the active little animals. In cultivated land, moles may cause consider¬able economic loss through their burrowings. Mole control can be divided into six basic categories: exclusion, repellents, gases, toxic baits, reduction of food supply, and trapping. Un¬changed over the years, trapping is still considered the most reliable of all methods of control, however, under certain conditions or situations, the other methods of control may be extremely useful. WOOD RATS: The native wood rat …

Extremal Problems For Functions Starlike In The Exterior Of The Unit Circle, Wimberly C. Royster

Mathematics Faculty Publications

No abstract provided.

Lattice-Ordered Rings And Function Rings, Melvin Henriksen, John R. Isbell

All HMC Faculty Publications and Research

This paper treats the structure of those lattice-ordered rings which are subdirect sums of totally ordered rings -- the f-rings of Birkhoff and Pierce [4]. Broadly, it splits into two parts, concerned respectively with identical equations and with ideal structure; but there is an important overlap at the beginning.

Application Of The Sideband Technique To Wide-Line Nmr Spectra, Juana Vivó Acrivos

Faculty Publications, Chemistry

No abstract provided.

Farm Water Storage : Circular Brick Reservoirs, R P. Harington

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

A circular brick tank is a cheap and efficient water storage which can be easily built on any farm. The method described below by Kimberley Research Station manager R. P. Harington was used to build a swimming pool—storage on the station.

Select On Fleece Weight And Cull The Low Producers, W L. Mcgarry

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

EFFICIENT calling of maiden ewes before they join the breeding flock is an essential part of any policy of flock improvement.

Removal of the low wool producers should be one of the first considerations when culling the flock.

Flooding And Salt Problems In The Wheatbelt, Department Of Agriculture, Western Australia

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

VALUABLE land has become salty in parts of the West Australian agricultural areas because most of the surrounding land has been cleared and developed for agriculture.

This salting of a small proportion of the land is part of the price paid for the development of agriculture in this State.

Drainage is not the answer to the wheatbelt flooding and salt land problems.

A more practical approach is to limit runoff from sloping land, and to make good use of salt-affected land by growing salt tolerant perennial pastures on it, says the Soils Division of the Department of Agriculture.

The Gascoyne River Catchment Area, W M. Nunn

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

A RECENT Department of Agriculture survey of the Gascoyne River catchment area has indicated that deterioration of plant cover in the area contributes to the severity of floods which regularly damage the town of Carnarvon.

It is hoped that the results of the survey will help efforts to regenerate the catchment area, and reduce the risk of flooding.

A Review Of The 1961-1962 Silage Competition, H G. Elliott

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

FOR the past five years the Australian Dairy Produce Board Pasture Improvement Committee (W.A.) has sponsored a silage competition in the dairying areas.

Judging is done by the officers of the Dairy Division of the Department of Agriculture and prize money totalling £175 is awarded.

Cobalt : Its Use To Control Wasting Disease, Laurence C. Snook

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

FOR many years it was assumed that in Western Australia cobalt deficient areas were restricted to a coastal fringe which rarely extended more than 20 miles inland.

This has proved a costly false assumption. During recent years cobalt deficiency has been diagnosed over extensive areas of inland country.

Molybdenum Deficiency On Lighter Soils, Edgar Noel Fitzpatrick

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

WIDESPREAD occurrences of molybdenum deficiency of subterranean clover have been observed on sandy and gfravelly surfaced soils in recent years, and present indications are that molybdenum will join copper and zinc as a major trace element deficiency of many of these soils.

Trace Elements For Cereal Crops And Pastures, Edgar Noel Fitzpatrick

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

TRACE element deficiencies are widespread in Western Australia and application of copper, zinc, molybdenum and cobalt have played a major part in land development in this State.

Research Officer E. N. Fitzpatrick, M.Sc. (Agric.) reviews recent Department of Agriculture research on the use of Trace elements for crop and pasture growth on deficient soils in Western Australia.