McGill University Thèses et mémoires publiés en 1955

The variation in the magnetic properties of Manganese Zinc ferrite produced by changes in the manufacturing process was investigated experimentally. The initial permeability and core loss may be controlled over a wide range by the sintering process. Also, the permeability, core loss, temperature coefficient of permeability and Curie point are strongly dependent on the chemical composition of the material. [...]  Lire la suite

This study is primarily concerned with the historical development of legal remedies for surface damages caused by foreign aircraft. Progress has been made since the early days of aviation law and it has been my pleasure to reflect upon the studies, proposals, drafts, and conventions in this field prepared by the legal men of our century.  Lire la suite

Smith, Wilfred Cantwell (Supervisor)  Lire la suite

This study falls into two parts. In Part 1 the development of ureterocolostomy techniques is first outlined. Then the literature is reviewed to give some indication of the frequency of renal damage and hyperchloraemic acidosis following ureterocolostomy. The apparent inability of more modern ureteral implantation methods to abolish these hazards is then considered.  Lire la suite

This is a study of the play and recreation of a number of families in which at least one person from each family is a member of the University Settlement of Montreal. Through this study an attempt will be made to determine whether the University Settlement can be of greater benefit to the family by providing a play and recreational program for them.  Lire la suite

The method of Elson and Morgan for the determination of hexosamine is based on acetylation in alkaline solution to form a product that gives a colour with p-dimethylamino-benzaldehyde in acid solution. The thesis describes a modification of this method applicable to acid hydrolyzates of tissues.  Lire la suite

"The forest wealth of Canada is one of the country's greatest natural resources. Our forests have often been termed inexhaustible and perhaps they might be, were it not for the annual losses caused by fire, insects, disease and industrial use. Insects and diseases are responsible for the loss of at least 500 million cubic feet of timber annually or about 15 per cent of the annual depletion." [...]  Lire la suite

The earliest indication of the importance of chain mechanisms in gaseous reactions came from the work of Bodenstein. His calculations of the quantum yields of several photochemical reactions demonstrated unequivocally that the Einstein Law of Photochemical Equivalence could not be applied to the overall processes. Nernst was one of the first to suggest that atoms were the chain carriers in these reactions, and for this reason the "Nernst Chain" - proposed for the photochemical synthesis of hydrogen chloride - still bears his name. [...]  Lire la suite

During the summer season of 1953 the author was employed by Noranda Mines Limited and was assigned to make a geological map of a group of mining claims located in the footwall of the Sudbury norite at the north-west corner of the basin area. The purpose of the work was to realize the extent and nature of the various rock types and, specifically, to make an appraisal of the economic possibilities of the area.  Lire la suite

The consistent isolation and accurate classification of the pathogenic anaerobic Actinomyces from clinically and histopathologically diagnosed cases of actinomycosis is not always possible. This, it is felt, is due primarily to the lack of known differentiating characteristics of the smooth, A. bovis, Harz 1877 form of the etiological agent. A method which facilitates the isolation of the anaerobic organisms from heavily contaminated specimens is discussed. [...]  Lire la suite

The purpose of this thesis is to present the results of a study on partial perceptual isolation in mentally disturbed individuals which has yielded some new information about the problem of depersonalization and body-scheme. The nature of the methodology, and the material used, seems to warrant some clarification of the motives for this study. The impetus for the investigation came from three different lines of inquiry: (a) - The problem of disorganization of the individual in psychotherapy which, under certain conditions, may yield beneficial results.  Lire la suite

The electromagnetic field intensity and phase distribution in various receiving planes for a series of microwave solid dielectric lenses were investigated experimentally. The lenses were illuminated by a point source positioned at various distances off the principal axis of the system. Scans were made in both the E- and H-planes. Due to the finite size of the lens aperture the intensity distribution in the field of the lens must be described as a diffraction pattern. Although essentially the same for both the E- and H-planes of polarization, the lens pattern was found to deteriorate both in relative intensity and in …  Lire la suite

Since the pioneer work of Bruce White (1926) and the adoption of the Kauffmann-White Antigenic Schema in 1934, the number of Salmonella serotypes has increased tremendously. At the time of writing, the number of recognized types is 363. [...]  Lire la suite

“In a generic and primary sense, jurisprudence includes the entire body of legal doctrine. It is jurisprudentia - the knowledge of law - and in this sense all law books are books of law” (1). According to this nomenclature all books, notes and thesis on Air Law including the Rome and Warsaw Conventions that embody the legal doctrine are subjects of jurisprudence. "From jurisprudence in its generic sense, as including the entire body of legal doctrine, it is necessary to distinguish jurisprudence in a more specific sense, in which it means a particular department of such doctrine exclusively.  Lire la suite

It is strange that in a country of Canada's dimensions and regional diversities, the study of areal differentiation has advanced so little. Manufacturing is directly responsible for the means of livelihood of one-quarter of the population, and its development is popularly regarded as a barometer of economic maturity and nationhood. A long-awaited Seaway is now being constructed and speculation on area benefits and handicaps is rife. Yet the existing pattern of manufacturing, which forms the basis of future developments, remains uncharted. It is a purpose of this study to survey and present an initial differentiation of the manufacturing belt in …  Lire la suite

Man has been aware of the analgesic and narcotic effects of opium, the dried juice of the poppy, at least since civilization dawned in Egypt. However, it was an impure substance and its effects were unpredictable: it might cure pain, provide a "boost", or kill. Not until the Sixteenth Century did man start to unravel the secret of opium. [...]  Lire la suite

In this thesis, an attempt was made to demonstrate the possible role of monocytes in producing antibody in vitro. Series of experiments were carried out in vitro, under this line, to confirm previous results obtained in vivo by Girard & Murray (67). These authors observed in rabbits maintained in a state of monocytosis that these animals will give a significantly elevated titer over that of control animals when they are immunized against S. typhosa, staphylococcus toxoid and Horse serum. [...]  Lire la suite

The importance of the Grande Greve and Cape Bon Ami Formations of Gaspé has been brought out by the discovery and exploitation of copper ore bodies in these two formations by the Gaspé Copper Mines Ltd. The rock samples which have been analysed come from one drill-hole (Buffalo Canadian E-3) located near the Copper Brook Aureole. In this hole it has been possible to correlate the various zones in the aureole of alteration with their unaltered equivalents outside. [...]  Lire la suite

This thesis consists of theoretical investigations of the process of electron capture by ions passing through gases. Electron capture phenomena were first observed experimentally by Henderson in 1922. Apart from its intrinsic interest this phenomenon is of importance because the range of ions depends strongly on their charge. There is now a large quantity of experimental data on various data on various capture processes, much of which is summarized by Massey and Burhop.  Lire la suite

Selling and salesmanship are now among the universals of culture on this continent. Although much is known about the mass effects of salesmanship, relatively little knowledge exists on the nature of the face-to-face selling situation. It is an interpersonal situation, involving the interaction of two or more actors: salesman and customer(s). The specific purpose of this interaction is the transfer of a commodity. These facts seem familiar and taken for granted.  Lire la suite

In most studies of the Mannich condensation, compounds containing active hydrogens on carbon were used. Only a few reactions using compounds possessing active hydrogens on nitrogen have been reported in the literature. The objective of this work was to carry out a systematic study of the Mannich condensation of secondary amines and formaldehyde with compounds containing one or two imino groups in which the hydrogens were activated for this type of reaction by the presence of carbonyl groups. [...]  Lire la suite

The main work of this paper is the description of electronic equipment that has been developed to measure the parameters of junction transistors over an appreciable frequency range and with changing bias points.  Lire la suite

The project is an exploratory study into the living experiences of 25 immigrant families, with dependent children, during their first two years in Montreal. The years of immigration were from 1951 to 1953. The sample was located through the co-operation of the Protestant and Catholic school boards of Montreal. An "open-end" home interview was the main research tool. [...]  Lire la suite

The changes in the blood of pregnant women have fascinated many obstetricians and hematologists. A high incidence ot anemia has been observed in pregnancy throughout history. Moreover it has been acknowledged that the study of the blood may contribute to the establishment of a proper diagnosis and satisfactory treatment in many disorders of pregnancy.  Lire la suite

This study is undertaken to explore the values which 110 mothers of varying religious and socio-economic backgrounds assign toward child behaviour and care. Of these mothers 78 participated in Child Study Groups sponsored by the Parent Education Department of the Mental Hygiene Institute in conjunction with the Quebec Federation of Home and School Associations. The remaining 32 mothers never participated in any Child Study Group. These two groups were compared in order to determine the effect of experience in Child Study Groups on parental concepts. The study also seeks to obtain knowledge concerning sources of information most frequently used by …  Lire la suite

Much progress has been made in the study of chemical kinetics on the basis that many reaction mechanisms involve the participation of 'free radicals'. In such mechanisms the overall reaction is assumed to consist of a recurring series, or 'chain', of elementary reactions which can be initiated and propagated by stable but very reactive fragments of molecules, or radicals.  Lire la suite

Although attention has been focussed on the eastern portion of the Gaspe Peninsula for many years by numerous campanies prospecting for oil, it is only comparatively recently that economie base metal deposits of substantial size have been proved. This resulted from a prospector tracing a piece of mineralized neat to its source. The discovery led to the formation of Gaspe Copper Mines Ltd., a Noranda subsidiary. The mine, which is now taking shape, is transforming a section ot the Gaspe wilderness into a modern industrial enterprise and has been responsible for the birth of the new town of Murdochville. It …  Lire la suite

It is very desirable to find good methods of utilizing the vast amount of bark which is produced as a by-product in the pulp and paper and lumbering industries. Up to the present, the attempts at making use of bark have been centered for the most part around burning it or using its fibrous fraction as such. [...]  Lire la suite

The behaviour of electrolytic solutions is to-date not well understood. It is universally accepted that when a solute capable of forming a conducting solution is dissolved in a suitable solvent, it dissociates spontaneously into ions. The phenomena of electrolytic conduction have provided us with the most powerful arguments in favor of this ion concept, but, at the same time have provided much conflicting evidence with regard to the degree of dissociation. [...]  Lire la suite

The motivation of this work lies in the hope that there may exist some possibly significant connection between the structure of a (finite) group and the structure of its associated cohomology groups. l use the word "hope", since to the present so little work has been done along these lines that one cannot accurately judge of what use the cohomology theory may be in abstract group theory. Perhaps the outstanding reason for this lack of results is due to the extreme difficulty of effectively calculating the cohomology structure of a given abstract group. So it is to the problem of …  Lire la suite

The purpose of this study was to construct and standardize a short individual performance test of intelligence for children and adults living in isolated or restricted environments. It had been noted by Canadian Army Personnel Selection during World War II that an unusually high proportion of individuals from outlying rural areas in Canada made scores on service tests below the set selection standards. A non-verbal section of the general selection test was used to attempt to discriminate between these individuals on the assumption that the non-verbal material used was appropriate for assessing the abilities of individuals from such isolated or …  Lire la suite

Every aspect of modern development utilizes large bodies of water for the disposal of wastes. Increasing numbers of rivers, lakes, and streams that were once relatively pure are now being subjected to pollution, as it has become the established (or at least accepted) practice to discharge every kind of waste into water. The underlying principle of such a procedure is based on both dilution, and auto-purification occurring in flowing water. [...]  Lire la suite

The purpose of this thesis is essentially a delineation of the climatic history of the Near East, particularly recent geological and historical times. The area here considered under the term 'Near East' comprises Asia Minor, Persia, the Arabian Peninsula and Egypt. On the other hand, the time span designated by 'recent geological time' and 'historical time' are taken to mean the period 10,000 - 500 B.C., and 500 B.C. to the present respectively. For the former period, the evidence used is almost exclusively derived from geology, whereas historical sources supplement the geological and allied evidence for the latter.  Lire la suite

The pioneer work in the field of in vivo studies of the corticosteroids present in adrenal venous blood vas carried out by Vogt (1943). She collected the adrenal venous blood from a heparinized dog and tested the blood plasma for cortical activity by biological aasay and found that adrenal glands produce large amounts of material with corticoid activity relative to the amount extractable from the tissue.  Lire la suite

The discovery of fission by Hahn and Strassman in 1939 resulted directly from the discovery of the neutron by Chadwick in 1932. Fermi and his co-workers found that, when many elements were bombarded with neutrons, some of the neutrons were captured by the nucleus of the element. This resulted in an unstable nucleus which regained stability by emitting a β-particle, sometimes accompanied by gamma rays, giving a nucleus of atomic number one unit greater than the original one bombarded. [...]  Lire la suite

This thesis is an attempt to show the manner in which the early Tudors exerted an influence in Scotland from the death of James III in 1488 to the assumption of power by James V in 1524. From evidence derived from both the primary and secondary sources the author has endeavoured to trace the spasmodic but steady growth of English influence throughout this period, which ends in 1524 with the departure of the Duke of Albany, the pro-French Regent and the subsequent triumph of Tudor designs on Scotland.  Lire la suite

Canada ranks among the leading countries of the world in the production and exportation of aluminium. In addition, Canadian enterprises operate aluminium plants in several parts of the world. It is rather surprising, therefore, to find relatively little research in Canadian universities dealing with problems in aluminium production. [...]  Lire la suite

Livestock farmers in New Brunswick, in common with other livestock farmers, depend upon pasture to provide the bulk of the nutrients required by livestock during the summer months. Approximately one-sixth of the total occupied agricultural land in New Brunswick is devoted to pasture, a fact which makes its importance quite obvious. Notwithstanding its importance a large proportion of this pasture area has low productivity. [...]  Lire la suite

This study was concerned with the nature of some of the factors that affect the human response to painful stimulation. Specifically, two types of pain thresholds were studied: the first was the minimal noxious stimulus intensity which the subject (S) reports as painful, and the second, the minimal noxious stimulus intensity at which S requests that stimulation cease. The specific problems investigated here arose from the studies reviewed below.  Lire la suite

At the close of the nineteenth century Lehmann and Neumann (1896) designed the genus Corynebacterium as a suitable pigeon-hole in their scheme of Bacterial classification for the organism producing the disease diphtheria and a few other organisms which were considered similar for morphological reasons. The genus consisted entirely of human and animal pathogenic or parasitic bacteria characterized by irregular, often club-like cell shapes, Gram-positive but showing irregular staining, non-acid-fast, non-motile, lacking endospores and having a predominently aerobic habitat.  Lire la suite

Neutron induced reactions in oxygen have been photographed in a Wilson cloud chamber for neutrons of energies up to 70 Mev. The apparatus is described. A detailed analysis was made of 215 stereoscopic photographs of four alpha particle stars. The evidence strongly suggested the following modes of disintegration.  Lire la suite

This work is concerned with the study of new short-lived activities induced by proton bombardment in the McGill 100 Mev. synchro-cyclotron. (Hereafter the term cyclotron will be used.) This report is really made up of two parts. The first one deals with the observation of a new Scandium isotope and the second covers an investigation made over the isomerism island about N or P = 82 to see if there were any observable isomeric transitions with a half-life compatible with the practical range of the existing apparatus, i.e. 0.1 sec. < t < 10 sec.  Lire la suite

While the capacitor-start motor can produce, by the choice of a sufficiently high capacity and an appropriate effective turn ratio, a high starting torque at low starting current, the single-value capacitor -run motor offers a rather poor performance at start. Indeed, the negative sequence current can become so high as to produce excessive heating, if the capacity is not kept below certain limits. The necessity of taking a low capacity, however, results in a low starting torque. Furthermore, it is possible to design the auxiliary circuit (effective turn ratio and capacity) to give balanced operation at full load, but such …  Lire la suite

Sommerfeld and Maue obtained approximate wave functions for a free electron in a Coulomb field by comparing the iterated Dirac equation for this case with the corresponding relativistic Schroedinger equation. These functions are well described in Sommerfeld's book "Atombau und Spektrallinien", Vol. II, Chap. V, Section 8, and in later chapters of this book are applied to problems of photo-electric emission and Bremsstrahlung processes.  Lire la suite

The surgical service of a teaching hospital presents an unique opportunity for the study of the physiological and pathological response of individuals to alterations in circulating blood volume. Surgeons are frequently confronted with problems relating to the management of dehydration, massive hemorrhage, thermal and mechanical trauma and the preparation of elderly, malnourished, chronically ill patients for major operative procedures. The hemodynamic response of patients to anaesthesia and operation is an important factor determining operative mortality and morbidity rates.  Lire la suite

Cercospora beticola Sacc. is a necrogenic pathogene which produces brown small nearly circular spots on the foliage of table beets, sugar beets, mangolds and Swiss chard. On beet leaves the spots have a reddish-purple border, while on mangolds there is usually a pale green border around each spot. The center of the spot is grayish due to long septate conidia produced on conidiophores which come out through the stomata.  Lire la suite

This series of experiments is based on work done by Dickens and Greville (1933) and Elliott am Henry (1946, 2). Dickens and Greville found that depriving brain slices of both substrate and oxygen for even short periods of time at 38° caused a marked decrease in the anaerobic glycolytic activity of the slices. Three minutes of the pretreatment caused a reduction of the glycolytic activity to 37%, while twenty minutes decreased it to 11-12%. Respiration, in the meanwhile, was only inhibited to about 50% even after forty minutes of anoxia in the absence of substrate at 38°.  Lire la suite

A theory to explain the temperature dependence of the work function of the monovalent metals has been developed assuming a free-electron approximation for the valence electrons, and a Debye model for the thermal vibrations of the ion cores. The theory predicts that the electrostatic effect of thermal vibrations is the chief contribution to the temperature coefficient of the work function, all other contributions being either negligible or cancelling. Agreement between theory and experiment was obtained from observations made on silver and copper films but not from less reliable measurements made on gold films. Measurements were taken over the temperature range …  Lire la suite

The object of this work was to investigate the oxidation of methylated pyridine compounds by means of the mild oxidizing agent selenium dioxide. From previous publications it had been verified that methyl groups adjacent to activating groups, such as tertiary nitrogens in heterocyclic rings or amino groups in general, are capable of undergoing oxidation with selenium dioxide to the corresponding carbonyl or carboxylic group. Although work had been previously carried out on mono-methylpyridines the results obtained seemed to be unreliable. Therefore it was first decided to reinvestigate their oxidation.  Lire la suite