McGill University Thèses et mémoires publiés en 1959

Starch xanthates were first prepared over 50 years ago, and since then little has been learned about their chemical structure; even suggestions for their industrial utilization have been very few. In the meantime, the emergence of the viscose process and the rayon and cellulose film industries has stimulated a great amount of research on cellulose xanthates all over the world but, nevertheless, little knowledge has been gained about the distribution of the xanthate groups in the cellulose macro-molecule, and particularly within the anhydroglucose units. Only recently, attempts were made in these laboratories to locate the xanthate groups in samples of …  Lire la suite

This study introduces and investigates a general method for measuring the flow of granular material through orifices. During the last decade or so, the phenomenon of the mechanization of material handling in modern industry has developed into immense proportions. But the problem of the handling of granular material through orifices lies, obviously, at the very root of this tremendous development. The present study is an attempt to contribute to the solution of this problem. Laboratory investigations were conducted with Ottawa Sand, glass bins, sand-paper bins and circular orifices. The effect of head, diameter of bin, diameter of orifice, roughness of …  Lire la suite

The material presented in this thesis is drawn from investigations made during a three month field season at the McGill Subarctic Research Laboratory. During May, June and September, 1957, a study of the bogs in the Knoh Lake area was made. The primary objective was to make a field check on a classification which had been made from air photographs during the winter of 1956-57. It is not intended as a Botanical study, but is a consideration of the physical characteristics and surface features, in an attempt to explain their mode of occurrence. It is hoped that the study may …  Lire la suite

Nationalism is a relatively recent phenomenon in human history. For, in the past man's loyalty had been due not to the nation-state or nationality, but to differing forms of social authority, political organization and ideological cohesion such as tribe or clan, the city state or the feudal lord, the dynastic state, the church or the religious group. During the Middle Ages there are hardly any traces of nationalism, either in the Islamic World or Christendom. In those times, the abject of popular loyalty was not nationality but religion. In Europe, "the object of popular loyalty which was superior to all …  Lire la suite

A classification of airflow pattern types is formulated for the region on the basis of synoptic weather maps for November, 1956 to March, 1958. Regional indices of the zonal and meridional flow at mean sea level and the 500 mb level are examined in relation to the airflow types. The spatial and temporal variations of weather phenomena associated with the types are analyzed by quantitative weather parameters and the significance of the results is assessed with reference to local weather forecasting and palaeoclimatic reconstructions.  Lire la suite

Bien qu'il soit contraire à l'usage d'écrire une thèse sur un auteur vivant, l'œuvre de Monsieur Henri Queffélec a déjà reçu un tel accueil depuis quelques années, en France comme à l'étranger, que l'on peut bien entreprendre cette tâche sans qui elle coure le risque de paraitre prématurée. L'œuvre de Monsieur Queffélec est aujourd'hui assez riche et importante pour justifier une étude littéraire. Elle a d’ailleurs été traduite en plusieurs langues. Il y a quelques années, Queffélec était lu avec plaisir et intérêt, mais maintenant il prend sa place parmi les grands auteurs contemporains.  Lire la suite

Voluntary consumption, as a criterion of feeding value of two forage species was further tested by determining the “within species” effect of stage of maturity and of the physical form in which these forages were fed. Chemical composition, digestibility coefficients, voluntary intake and liveweight gains were determined. Various relationships between these factors and their relationship to forage species, stage of maturity and to the physical form in which the forage was fed, were investigated. Voluntary intake of the forages (including the effect of species, stage of maturity and physical form) was highly and significantly correlated to feeding value, whether expressed …  Lire la suite

Despite the extensive use of drugs in the treatment of atherosclerotic coronary heart disease, there are few studies in the literature dealing with the actions of drugs on the coronary circulation in the atherosclerotic state. One of the main physiological characteristics of the coronary circulation is its functional adaptability, i.e. changing to meet the nutritional needs of the heart. [...]  Lire la suite

We have investigated linguistic structure to find a grammar that will generate all sentences in English and only those. We pointed out that no finitie-state Markov process can serve as our grammar.We also pointed out that phrase structure, per se, is also inadequate but may serve as a kernel for transformational grammars. This, of course, leads to a complexity of obligatory and optional rules. We then introduced syntactic categories built up by the notion of rules of meaning and two basic categories -name (n) and sentence (s). We then built up syntactic types for English structures and described three methods …  Lire la suite

The presence of sulphide mineralization in the Bathurst-Newcastle area of New Brunswick has been known since early in the nineteenth century. Lindeman (1917) discussed the iron ore deposits in the area and mentioned that pyrite was found along the footwall of one iron deposit. In later years sporadic work was carried out, but it was concerned mainly with the iron ore and regional mapping (Alcock 1941).  Lire la suite

Roman Catholic Modernism in Europe and the Social Gospel in America, are two movements within the Christian Church, developing almost simultaneously, at the dawn of the twentieth century, with many affinities in aims and thoughts. This thesis proposes to investigate their developments, their characteristics, and their eventual relation and common premises, by considering similar aspects of their sociology and of their theology. [...]  Lire la suite

This work arose from the chance observation of a phenomenon which had received almost no attention in the literature. The problem, because it was a new one, required exploration before the definitive experiment could be designed. The results described here are from these exploratory experiments; they do not explain the underlying mechanism of the phenomenon, and indeed they pose more questions than they answer. [...]  Lire la suite

The problems involved in the design of a transistor operational amplifier suitable for a repetitive computer are discussed. An analysis of parallel feedback applied to an active quadripole is advanced to show that the maximum computing accuracy for a given number of transistors is obtained by employing cascaded, common-emitter stages without local feedback. The factors which determine the bandwidth of a repetitive computer amplifier are discussed and the associated stability problems are solved by appropriate shaping of the loop transmission of the amplifier. [...]  Lire la suite

The main theme of this study is income retention of Canadian manufacturing corporations. The data with which we have worked relate to forty-three well known companies and to the years 1932-1953 inclusive. Financial data of the kind we require are almost unobtainable for the 1920's and for this reason we have not been able to make a detailed study of income retention patterns before 1932.  Lire la suite

It is well known that since the advent of insulin and later the antibiotics, the acute complications of diabetes mellitis have become a remedial rarity and that the late vascular complications have assumed far greater prominance with regards both morbidity and mortality. Of these pathological changes only those that affect the retinal and glomerular capillaries can be considered unique for the diabetic subject. [...]  Lire la suite

The importance of phosphorus in plant nutrition has been recognized since the middle of the nineteenth century, when the analysis of plant ash showed the presence of phosphates and other inorganic salts, and the use of phosphorus-containing manures and fertilizers in field experiments greatly improved crop yields. Since that time, particularly during the last fifty years, phosphorus has arrested the attention of soil scientists who have contributed greatly to our knowledge of it and its soil-plant relationships. [...]  Lire la suite

Gill, J. E. (Supervisor)  Lire la suite

Progress in surgical therapy is based upon the firm understanding of the anatomical, physiological and pathological processes involved in any specific disease entity. Each contribution must necessarily be only the addition of a brick, or at best a keystone, to the vast masonry work of scientific knowledge. [...]  Lire la suite

The Evangelical party within the Church of England, led by William Wilberforce and the Clapham Sect, masterminded the humanitarian campaigns to abolish the slave trade and to destroy the institution of slavery itself. They also initiated, and directed throughout, the drive to Christianize India. Their wealth, their talented representation in Parliament, and their genius for arousing and organizing popular support, were essential factors in the successful prosecution of these three crusades.  Lire la suite

Ten years ago, the glycolytic system as elucidated by Embden, Meyerhof and others, along with the tricarboxylic acid system as elucidated by Krebs and others, was believed to be the sole pathway of carbohydrate metabolism. Other reactions, known to be concerned with the metabolism of carbohydrates, were considered to be side reactions of the major scheme. [...]  Lire la suite

The Weedon Pyrite and Copper Corporation Mine is located one mile north of the village of Fontainebleau, Wolfe County, Weedon Township of the Eastern Townships of Quebec Province. The Mine Property comprises of 10 claims in Ranges II and III. The nearest town is Weedon, four and a half miles to the west. The city of Sherbrooke is 39 miles south and Quebec is 99 miles to the north.  Lire la suite

In 1932, Hess developed a technique whereby electrodes could be permanently implanted in the brains of intact, awake animals. The electrode mountings were small, caused no apparent discomfort, and allowed the animals complete freedom of movement. Although several other investigators independently devised their own techniques (Loucks, 1933; Chaffee and Light, 1934), subsequent work has shown Hess' method to be the most reliable (Delgado, l955a). [...]  Lire la suite

Elkin, Frederick. (Supervisor)  Lire la suite

A student who deals with a theme from Turkish Islam is confronted with special problems of transliteration, owing to the use of the Latin alphabet by modern Turks. The method which has been adopted here utilizes a standard transliteration scheme, an outline of which is presented in the Appendix, for those Islamic technical terms which originated in Arabic and Persian. For terms and names which are recognizably Turkish, there is no problem of consequence. [...]  Lire la suite

The purpose of this thesis is to present three proofs of the minimax theorem and some theorems on the solution of finite games. The treatment is more detailed than in the original references. The necessary theory of convex sets and the basic concepts of the theory of games are introduced in the first two chapters of the thesis.  Lire la suite

L'homme moderne n'est vraiment plus seul. La pensée diffusée sous toutes les formes que nous observons à l'heure actuelle, pénètre les continents avec une rapidité remarquable. La venue de l'automatisation procure des heures de loisir plus considérables. On cherche à se distraire et à s'instruire en utilisant les principaux instruments de culture qui sont à la portée de tous, pour la formation de l'intelligence et du coeur. [...]  Lire la suite

The ignition delay of fuels injected into a hot air stream has been investigated with respect to the change in the following parameters: confining tube size, fuel air ratio (6 - 30 x 10-3 by weight) and oxygen concentration in a temperature range from 725 °C to 850 °C.  Lire la suite

In 1855 Addison described a group of symptoms, among which was a weak thready pulse, which were associated with bilateral descruction of the adrenal glands (1, 2). These findings were the first indication that the adrenal was important in the regulation of blood pressure. [...]  Lire la suite

The coalescence of liquid drops at a flat liquid/liquid interface was investigated. Theoretical equations describing the rate of thinning of thin fluid films were derived and their limitations discussed. The influence of temperature, drop size and diffusion on drop stability was determined.  Lire la suite

One of the major phenotypic variables in red clover has been observed to be the habit of vegetative growth in the year of seeding. Bird (1948) has identified five growth types in the variety Dollard. As a result, there was initiated a continuing series of research projects in the Department of Agronomy of Macdonald College which has attempted to relate this variation to differences in management (Steppler and Raymond 1954); differences in source of seed (Lachance 1956); level of endogenous auxin in plants (Cumming 1956) and to difference in a variety of environmental conditions (Bristow 1957). [...]  Lire la suite

The phase relations in the Fe-As-S system at 600°0, studied in rigid silica glass tubes where a vapor phase is always present, are as follows: a liquid field extends along the S-As join from 100 to 22.8 +/- 0.2 weight per cent sulfur. An extensive pyrite-liquid-vapor field and a narrower pyrrhotite-liquid-vapor field are separated by the four-phase region pyrite-pyrrhotite-liquid-vapor in which the composition of the liquid is, in weight per cent, approximately As = 62.5, S = 37.5, and Fe = 0.11. [...]  Lire la suite

When a response acquired in a given situation is tested in a similar but different situation, typically there occurs a decrement in the trained response, as indicated by increased latency and by changes in other measures of response strength. This thesis is concerned with the nature of such decrement in the strength of the "transferred" response. The "transfer" of a response from one situation to another has generally been attributed to partial identity of the training and test situations (see Hilgard, 1956). This view has received explicit formulation in the recent stochastic models of learning (Estes, 1950; Bush & Mosteller, …  Lire la suite

The presence of a retarding potential in a space charge limited diode is used to obtain the effect of an essentially monoenergetic electron beam by the R. P. D. method. The performance of an ion source, using this electron gun, is treated theoretically and tested experimentally with argon. Further tests on Xe+, N2+ and SF6- ions serves to illustrate the effectiveness of this ion source. An electron impact study of nitric oxide was made using this ion source. The ionization potential of NO was found to be 9.25 ±. 02 eV., and the ionization efficiency curve for NO+ to be …  Lire la suite

In 1947 an investigation on soil genesis was initiated at Macdonald Collage with the objective of obtaining information regarding the mechanism of the formation of podzolic soils under forested conditions. A starting point in this investigation was the hypothesis that substances leaching from the litter of the forest floor would be of especial importance in this process by, (a) contributing to the organic matter content of these soils, especially in the B horizon, and (b) being involved in the translocation of iron and aluminum within the profile.  Lire la suite

The primary object of the present work was to continue the experiments on beats of solution started by Moore (1955) in the Department of Geological Sciences, McGill University. In his work, Moore accumulated a fund of technical knowledge concerned with twin calorimeter construction and technique. He constructed twin calorimeters to determine the beats of solution of finely ground quartz crystal and quartz glass. He attempted to measure the surface and strain energy of these minerals but failed because he employed a quenching technique with the coarser fractions in order to reduce the length of the solution period.  Lire la suite

Plant cell wa.lls consist ma.inly ot cellulose, hemicellulose and lignin. Coniferous and deciduous woods contain ail three constituants,although in varying proportions. Cellulose is a high molecular weight,linear polymer of D-glucose residues while hemicelluloses usually coesist of D-xylose and D-mannose residues with smaller amounts of D-galactose, D-glucose, L-arabinose, L-rhamnose, 4-0-methyl-D-glucuronic acid and other sugars. The main chain of hemicellulose ie much shorter than that of cellulose and is o!ten branched. [...]  Lire la suite

Over the centuries physicians have noted the intimacy of the relationship between "mind" and "body". One of the many quotable statements on the subject was made in 1779 by Dr. William Buchan of Edinburgh, who wrote, "The passions have great influence both in the crate and cure of diseases. How winds act upon matter will, in all probability, ever remain a secret. lt is sufficient for us to know that there is established a reciprocal influence betwixt the mental and corporeal parts and that whatsoever disorders the one, likewise affects the ether." (7) There have been many fruitless debates over …  Lire la suite

These studies report attempts to induce ketosis in diabetic patients in order to obtain more information about fat and ketone metabolism in different clinical types of diabetes mellitus. All patients with diabetes mellitus have impaired ability to accelerate the metabolism of carbohydrate leading to varying degrees of hyperglycemia and glycosuria. As well as this abnormality in carbohydrate metabolism, there are abnormalities in fat and ketone metabolism which are different in the various clinical types of patients with diabetes mellitus. These studies were designed to quantitate some of these differences.  Lire la suite

The nephrotic syndrome is most frequently encountered in children within the age group of one to six years. It is characterized by the occurrence of massive albuminuria, hypoproteinemia, hyperlipemia and voluminous edema. When this syndrome is almost pure, that is to say, when it is not accompanied by hematuria, renal insufficiency or hypertension, it has for a long time been referred to as lipuid nephrosis. The German anatomists (MUNK, 1908; VOLLARD AND FAHR 1913) were the first to use this name arising from the observation that the renal tubules are infiltrated by birefringent liquid substances accompanied by signs of inflammation.  Lire la suite

The applications and limitations of pillars in underground mines is a subject that is of great importance to many mining companies, both new and old, but unfortunately has received little attention in the mining literature. Where underground pillars are used, the determination of suitable sizes present a problem about which little is known. An attempt has been made to gain an understanding of the factors involved in this problem by reviewing both theoretical and practical information on the subject. With this at hand, an attempt has been made to analyse pillar designs used in the Elliot Lake Uranium District, Ontario.  Lire la suite

This thesis analyses the 465 completed questionnaires of a 1958 newspaper mail survey or Canadian women living with their husbands. Of the 12 items on the questionnaire, the first 8 enlisted information relevant to the respondent's age, husband's age, duration of the marriage, previous marriage if any, number of children, length of acquaintance prior to the marriage, husband's occupation, and wife's occupation if she was working outside the home. The remaining 4 items requested the respondent to state the qualities she liked most in her husband, those she disliked most, whether she would marry him again, and, finally, to state …  Lire la suite

The first attempts to apply information theory to mathematical linguistics were made by C. Shannon in 1948 (ref.60) and by B. Mandelbrot in 1952 (ref.39). Information theory, now a branch of mathematical probability, was originally introduced by communications engineers. Thus, in the papers of Shannon and Mandelbrot analogies between the applications to physics and the applications to linguistics are frequently stressed. Fortunately, information theory bas very recently been developed on a purely mathematical basis. Thus, in this thesis references to physical analogies will be made only where they seem to clarify the situation.  Lire la suite

This study is, primarily, a presentation of a "re-exploration" of the physiography and vegetation of a large portion of Northern Ontario. At the same time, it serves as an illustration of a method of multiple survey through the use of aerial photographs.  Lire la suite

This study is, primarily, a presentation of a "re-exploration" of the physiography and vegetation of a large portion of Northern Ontario. At the same time, it serves as an illustration of a method of multiple survey through the use of aerial photographs. The area of Northern Ontario which is "re-explored" is the roughly 93,903 square miles encompassed by the Albany River Sheet (No. 2220) of the World Aeronautical Chart Series, published at a scale of 1 to 1 million (Map 1, in pocket). There were three principal reasons for selecting this particular area. One is that it is contiguous to …  Lire la suite

For the purpose of this address I would like to divide aviation into three broad divisions. First, Service aviation, and I do not think I need define it any more closely than that; secondly, scheduled airline operation which can include some of the long distance passenger charter work, and in the third division, the rest, which is in fact largely made up of aviation in the outback of the great countries of the world. I do not propose to make any further reference to Service aviation, or civil airline operation, or to the development of aircraft for their use because …  Lire la suite

Zirconium in the form of Zirconium oxide (Zr02) and zirconium foil was bombarded with protons of various energies from the 100 Mev McGill synchrocyclotron. Niobium was separated from the irradiated material by ion exchange column chromatography. When quick separation of these isotopes was desired a method based on solvent extraction of Niobium was used. A short lived activity, not previously observed, was found in the chemically separated Niobium when zirconium was bombarded at about 40 Mev protons. Gamma rays belonging to this activity were studied on a 28 channel pulse height analyser. Two gamma rays of approximately 75 kev, 1100 …  Lire la suite

Few doubt today tllat industry and industrial resources to sorne measure must come under the control of the central power. A hundred years of legislation upon hours of work, safety of machines, allotment of labour, cornbination of labour and every other phase of the life of the industrial worker and entrepreneur effectively silence the few voices in the wilderness that still cry freedom. But after that statement is made clarity ceases. Passionate views are held upon every aspect of trade control and there is no field of law in which passion is more out of place. It is not a …  Lire la suite

Spiders of the genus Philodromus are elusive, predatory creatures of fields, orchards, and woods. The name pernix, meaning lively, as applied to one of the large, grey species that frequent weathered bark and wooden structures is in one sense descriptive of the entire group. Although they seem to spend much time in seclusion under bark scales and in similar places, they are fast runners in the open. Their quick stops and starts, in combination with their flattened, grey or brownish bodies, make these spiders difficult both to find and to collect.  Lire la suite

L’avion permet à l’homme de réaliser l'un de ses plus chers désiras celui de voler. Par ailleurs l'aviation transforme la vie de l’homme par son influence sur les civilisations désormais mises brutalement en contact les unes avec les autres, pas son influence économique et par son rôle militaire.  Lire la suite

A fast and effective separation procedure for osmium is described; details are given for the preparation of strong line and spot sources of osmium for use with the beta instruments. [...]  Lire la suite