Chemistry Commons^™

Polarography Of Selected Metal Ions In Anhydrous Aliphatic Diamines, Frederick William Foss Jr.

University of the Pacific Theses and Dissertations

A search of the literature revealed that no study has sought to measure and compare the polarographic solvent properties of the anhydrous aliphatic diamines. In fact, there has been no reported instance of the use of anhydrous 1,3-propanediamine or 1,4-butanediamine in any electro- chemical system.

The Effect Of Chelates On Phosphorus Availability And Mobility, Salah Ahmed Tahoun

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Soil-phosphorus relations and plant-phosphorus relations have attracted the interest of many investigators since Liebig introduced his famous theory about the importance of the mineral matters to the plant in 1840. It was soon realized that phosphorus nutrition was a problem not easily solved for two reasons. 1. The added phosphorus fertilizers, soon after soil application are converted by some reactions in the soil to complex compounds far less soluble, consequently less available to the plant. Conclusions about this process led to controversial debates until it was discovered that a general statement covering all soils was impossible since the reactions involved …

The Effect Of Moisture And Temperature On Transformation Of Applied Ammonium Sulfate In Several Western Soils, Lloyd Richard Hossner

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The conversion of ammonia nitrogen to nitrite and nitrate forms of nitrogen has aroused much attention in the past and continues to receive much of the energy of the present day researcher.

Phosphorus Status Of Genola Soils In Utah, Warren E. Bendixen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

With increasing pressure on economical production of crops, more fertilizers are being applied to the soil each year to increase crop yields. Economical production of crops with applications of fertilizer requires an evaluation of the essential elements of the various crops so applications of fertilizer will not exceed the law of diminishing returns.

Because varying soil, moisture, and climatic conditions influence the response to added fertilizers, some workers (18, 26, 38) have contended that the only reliable way of determining the fertilization needs of a crop is to conduct a trial on the particular farm. The length of time involved …

The Mineral Content Of Various Sections Of Some Plants As Influenced By Conditions Associated With Lime-Induced Chlorosis, Hyrum Del Var Petersen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The so-called "lime-induced" chlorosis has been recognized for many years as a problem where plants are grown on calcareous soils. The characteristics associated with lime-induced chlorosis are the same as those associated with iron deficiency chlorosis--interveinal yellowing of the leaves at the meristemic region combined with reduced vigor of the plant as a whole. Lime-induced chlorosis is unique in that the iron content of both chlorotic plant and the soil do not always show a deficiency in iron when chemically analyzed. This leads to the theory that iron is inactivated in both the soil and plant.

Although no single factor …

Citrus Growers : Don't Blow Up Your Colouring Rooms, Department Of Agriculture, Western Australia

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

THERE have been several dangerous incidents associated with the use of acetylene in citrus colouring chambers recently, and growers are warned to take care when using this explosive gas.

Specific Gravities And Fluidity Factors Of Glaze Slips, E. S. Amos

Journal of the Arkansas Academy of Science

No abstract provided.

Simple Ignition Furnaces, L. B. Roberts, J. C. Hackney

Journal of the Arkansas Academy of Science

No abstract provided.

The Synthesis And Certain Chemical Properties Of Several Aromatic Fluorides, Horst G. Schneider

Bachelors’ Theses

The preparation of organic fluorides, until only recently, had been seriously curtailed not only because of the difficulty experienced in their synthesis, but also due to the lack of information with regard to their physical and chemical properties. With the investigation of their characteristics, their great importance was for the first time fully realized. A concerted search was made for new modes of their preparation. That this search was rewarded is shown in part by the synthesis of several aromatic fluorides as a portion of this thesis.

The Effect Of Weak Acid On The Stability Of Burnishing Ink, Marcella Wamser

Bachelors’ Theses

By definition we find "An emulsion being a system containing two liquid phases, one of which is dispersed as globules in the other. That liquid which is broken up into globules is termed the dispersed phase, whilst the liquid surrounding the globules is known as the continuous phase or dispersing medium". If a small portion of benzene is poured into a large volume of water, it can be emulsified by simply shaking or agitating. Again, chloroform and water with shaking gives an emulsion.

The Influence Of Gelatin On The Ph Of Acids And Bases, Beverly Terwilliger

Bachelors’ Theses

The purpose of this thesis is to determine how gelatin behaves in the presence of various acids and alkalis. It is possible to titrate gelatins with acids and bases and thereby determine the relation of the pH of the solution to the amounts of acid or base combined with the gelatin. If the results are plotted, a titration curve is obtained, the value of which gives the acid and base combining properties of a certain gelatin.

Some Useful Devices For The Chemical Laboratory, L. B. Roberts

Journal of the Arkansas Academy of Science

No abstract provided.

A Study Of The Proteolytic Activity Of The Enzyme Papain On Various Brands Of Gelatine, Mary Christella Zeszuto

Bachelors’ Theses

The measurement of the ·viscosity of liquids by means of capillary tubes has been carried on for more than a hundred years. It was not, however, until 1846 that the results of Poiseuille's research were given to the public. For the comprehensive study he made of the problem, the concept of the laws controlling viscometry flow is attributed to him. The study of the same problem. was continued by many others in subsequent years. Their results, in general, verify the principles given by Poiseuille, but corrections attributed to conditions other than viscous flow have been suggested. These involve drainage, liquid …

The Distribution Of Protein Between Beer And Foam, Robert T. Schmidt

Bachelors’ Theses

The development of the soy bean and its products is one of the foremost achievements of the modern industrial chemist. His purpose is to discover more and more applications for this useful product which is rapidly growing in popularity with the agriculture of the nation.

A Study Of The Decomposition Potentials Of A Commercial Gluconic Acid Bath, Roman L. Pozorski

Bachelors’ Theses

The study of electrochemistry is not only fascinating and worthwhile, but essential to the student of chemistry in the understanding of many theories and chemical phenomena. Though electrochemistry is still in its infancy, numerous substances are prepared electrolytically in industry. It is reported that about 15% of all the chemical goods manufactured are prepared by electrochemical industries. Of the various types of studies, in electrochemistry, the one which appears to be most appealing is the analysis of chemical reaction sin which electrochemical methods are used. The determination of decomposition potentials is one of these methods. A knowledge of decomposition values …

A Comparison Of The Caffeine Content Of Various Coffees, Emil J. Petrusek

Bachelors’ Theses

Coffee must be rated as one of the most important commodities in the commercial world due to the statistics or output and consumption. There are various brands and kinds of coffee produced by the different growers and roasters. Now to sell the brands, the various concerns base their advertising upon the flavor and price of the coffee. It is a fact that the flavor of coffee is in some way affected by the caffeine present. One popular brand is advertised as decaffeinated, that is, the caffeine has been removed. Confronted with these facts, it occurred to the author to test …

The Development Of Colloid Chemistry, Oscar A. Bouise

Electronic Theses and Dissertations

At first, it was as a blur, that had shrouded a great mystery for ages and ages, until some seventy odd years ago. Then came Thomas Graham, who could not satisfy himself with merely viewing a blur as a blur. Being a scientist, he applied his mind experimentally, which the keen precision of any of the eminent astronomers using a telescope, and viewed more clearly this mist which hovered above the horizon.

A Study Of The Ph Of Sodium Citrate In Relation To Blood Transfusion, Roman Edward Galasinski

Bachelors’ Theses

Blood transfusion, within recent years, has become a subject of paramount therapeutic importance. A few years back the technique of blood transfusion was so difficult that there were only a relatively few who possessed the requisite skill to perform the operation and then not always successfully. But since the year 1907 the evolution and perfection of blood transfusion procedures has been so steady and immense that, as a therapeutic measure, it has come into general use in the treatment of various acute and chronic lesions.

Acetylene Gas; Its Preparation And Value As An Illuminant, Alfred W. Bosworth

Student and Lippitt Prize Essays

This essay briefly discusses the history of Acetylene gas and delves further into its production, uses and value.

Some Contributions Of Pure Math To Science, Herbert B.E. Case

Student and Lippitt Prize Essays

An examination of the connection between math and science through discoveries in the subjects of astronomy, mechanics, physics and chemistry.