McGill University Thèses et mémoires publiés en 1959

One of the major issues in learning theory has centered around the question of whether reward is necessary to strengthen an association between a stimulus situation (S) and a response (R). The strengthening of an association, or learning, is in this context defined as an increase in the probability of occurrence of R when the appropriate S is presented. [...]  Read more

The molecular configurations of cellulose in the solid state, although of considerable theoretical and technical interest, are still not fully understood. This thesis describes the use of the exchange reaction of tritium between cellulose and water to determine the accessibility of cellulose, and also to indicate changes in the molecular configurations occurring during the repeated wetting and drying of cellulose. The structure of cellulose has been extensively reviewed in many texts (1-4); however, aspects of the fine structure relevant to the present work will be discussed briefly.  Read more

During the past decade, evidence has accumulated to indicate the possible role of the adrenal cortex in the etiology of human hypertension. The most important observations are related to the frequent occurrence of hypertension in Cushing's Syndrome as well as in certain types of congenital hyperplasia and to the affect of total adrenalectomy on malignant hypertension which has often been followed both by a substantial fall of blood pressure and by a decreased incidence of cardiovascular lesions.  Read more

Reverse magnetic polarization of rocks "in situ" is a phenomenon which has been observed and reported by several workers since its discovery by Brunhes (1906) in baked clays and adjacent basalts of Miocene age in Central France. Earlier, Folgheraiter (1899) had noticed the reverse polarization of fragments of ancient pottery discovered in Central Italy and he had concluded from this observation that the earth’s magnetic field was probably temporarily reversed from its present direction in this part of the world during Recent times.  Read more

For the purpose of this thesis, the writer's own definition of “subject analysis” is “The art of determining and recording the subject matter of a publication in such a way that the publication will be readily brought to the attention of a reader interested in the same subject”. “Aeronautical libraries” will be considered u those serving organizations that manufacture or operate airplanes, that do research on airplanes or that legislate on matters involving airplanes. This thesis is a study of the tools and techniques of subject analysis available to the aeronautical librarian. These tools and techniques fall into the following …  Read more

L'étude de toute question se rapportant à la navigation aérienne nous amène inévitablement à examiner des domaines très divers. Les problèmes techniques et juridiques sont intimement lies, aussi bien sur le plan international que national et il n'est pas possible d'étudier séparément las problèmes da droit aérien privé en ne tenant pas suffisamment compte des problèmes da droit aérien public. De plus, la perpétuelle évolution des techniques aéronautiques apporte un élément qui doit être reconsidéré périodiquement.  Read more

The general geology of an area of 50 square miles comprising the western half of La Motte township, Abitibi County, Quebec, is described. Peridotites and dunites occur as sills in Early Precambrian volcanic and sedimentary rocks. The belts of rock constitute part of the northern limb of a major anticlinorium. Granitic rocks of the Preissac-La Motte-La Corne batholithic complex probably derived from a common magma chamber occupy about 75 per cent of the map-area. The younger muscovite- and biotite-bearing quartz monzonite masses contain a higher percentage of potash feldspar than the biotite granodiorite masses.  Read more

Thermal treatment of linseed oil for the purpose of preparing non-reverting shortening from hydrogenated linseed oil was originally stimulated by the shortage of vegetable oils for edible use during 1939-45. The tendency to flavour reversion of hydrogenated linseed shortening has been attributed to the isolinoleic acids formed from linolenic acid during hydrogenation. On the hypothesis that linolenic acid reacts preferentially in thermal polymerization, it seemed that it might be feasible to reduce the linolenic acid content of the oil by a preliminary thermal polymerization before the hydrogenation.  Read more

The professions have been selected as distinctive and significant subject matter for sociological analysis. The social scientist bas begun to realize that this area of behaviour provides a fertile field for studying one aspect of the work world. There are many problems deserving attention within any specific profession. This thesis will focus on the medical profession, with specific reference to the patterns of behaviour exhibited by the young Jewish practitioners in their endeavour to establish a private practice. Every professional is faced with this initial problem of setting himself up in practice, and in large part, how successful he is …  Read more

Many years before the isolation of aldosterone it was observed that the zona glomerulosa of the adrenal cortex appeared to be relatively independant of anterior pituitary control. With the isolation of aldosterone (16) and the determination of its origin in the glomerulosa, studies have been undertaken to investigate factors controlling the secretion of this hormone. [...]  Read more

Il y a trente ans exactement la Deuxième Conférence Internationale de Droit Privé Aérien adoptait un texte destiné à régir la responsabilité du transporteur aérien international : la Convention de Varsovie du 17 Octobre I929. Abandonnant parfois des préjugés nationalistes, renonçant aussi i à des principes juridiques traditionnels, les délégués de nombreux pays se mettaient d'accord sur un système de responsabilité afin de parvenir à une unification nécessaire du Droit des transports. En I929, l'aviation était encore dans l'enfance, utilisé par un nombre assez minime de personnes que l'on considérait volontiers comme des "casse-cou" ou des "sportifs".  Read more

The rapid depletion of iron ore reserves in the Lake Superior region, coupled with increased blast furnace efficiencies resulting from the use of high grade iron ore concentrates, has created considerable interest in the development of low grade iron deposits throughout North America. As a result, the low grade magnetite deposits of the "Grenville" region of eastern Ontario and western Quebec have received considerable attention, and several large deposits such as the Marmora and Hilton mines have recently been brought into production. With this in mind, the writer was commissioned by Hull Iron Mines, Ltd., of Montreal to investigate a …  Read more

Two zoologists with considerable experience in the Canadian Arctic suggested to the writer that the “Gammarus Problem” would be an extremely interesting subject for investigation, and one which has several advantages, for material is relatively easy to obtain, and there are a number of species available. The precise studies on the species and sub-species of this amphipod genus in British estuaries are well known, and have been cited as examples in discussions on speciation and “new systematics”. In North America such studies are lacking and the time seemed opportune to try to elucidate the relationships between some of the forms …  Read more

With such intriguing terms as Cosmic Law; Space Law; Metalaw; Anthropocentric Law being quite common place today, it seems that a thesis on the freedom of flight over the high seas is somewhat tame and terribly out of fashion. However, activity in space and flight over the high seas have one big thing in common - they are both badly in need of an international agreement. The main purpose of this thesis is to attempt to prove the great need of a multi-lateral Convention covering flight over the high seas. Despite the phenomenal increase of activities in and claims to …  Read more

The work of Bourchadat and Sandras (1) was the first recorded attempt to determine the fate of ethanol in the body. They suggested that ethanol is completely burned in the organism to carbon dioxide. Although this observation was confirmed by others, the general belief persisted that ethanol was not oxidised at all, but was eliminated unchanged (2). This theory was based on the results of the animal experiments formed about 1870 which showed that ethanol appeared both in the urine and expired air. Later, Dupre, Anstie and others (3,4,5,6) found that most of the administered ethanol disappears and that the …  Read more

Since 1932, when Crohn, Ginzburg and Oppenheimer conceived the concept of regional enteritis (40), the disease has been subjected to the scrutiny of accumulating clinical experience and experimental observations. Admittedly, considerable information concerning its incidence, distribution, course, therapy, and diagnosis, has been added to the original description. Yet, despite diligent efforts, speculations, and experimental works throughout these years, there is little definite knowledge regarding the etiology and pathogenesis, and the disease has not been reproduced in experimental animals.  Read more

The Seal Lake area described covers over 1,500 square miles in Central Labrador. This sedimentary basin is composed of a succession of Precambrian sediments, volcanic flows and diabase sills which have an estimated thickness of at least 30,000 feet. These rocks represent a typical geosynclinal sequence of sedimentation. Fluctuating shallow water conditions were prevalent throughout the deposition of most of the sequence, but the younger members of the succession are of terrestrial origin. The basin bas been extensively folded and overturned to the north with prominent thrust-faulting along the southern margin of the syncline. Low grade metamorphism increases slightly towards …  Read more

The problem of the interaction between a /\ particle and a nucleon is investigated for the case when the potential describing the interaction has both a spin and isotopic spin dependence. For such a potential a solution to Schrödinger’s equation is derived for orbital angular momentum zero. This solution is used to obtain the wall depths of the potential between a /\ particle and an H3 core. Using this result the solution is next applied to the scattering of a /\ particle by a nucleon and cross-sections are obtained for the outgoing /\ and E particles. The indication from these …  Read more

Moment rotation characteristics are obtained for a standard web connection for a 12 inch deep beam using high tensile bolts. Variables were 1) initial pre-tension 2) thickness of angle 3) ratio moment shear. The results obtained are compared with existing information. The rotation is found to be due to angle deformation and column deformation. The effect or the column flange stiffness on the connection characteristics are analyzed. The effect of the history of the connection is shown also. The determination or pre-tension in the bolts is described as well as the complete instrumentation and behaviour during test.  Read more

When chloramphenicol was first used for the treatment of typhoid fever, it was observed that although patients responded very well to treatment with this antibiotic, relapses occurred more frequently. It has been postulated that the increased incidence of relapse is a result of a lack in the production of natural immunity during the course of infection caused by a destruction or alteration of the antigenic components of Salmonella typhosa due to its exposure to chloramphenicol. Since that time it has been found that Salmonella typhosa, when made resistant to chloramphenicol "in vitro", has altered antigenic character as determined by agglutination …  Read more

The period of the Balkan wars was the last major crisis which Great Britain and the European Powers passed through successfully before the outbreak of the First World War. In England, this crisis differed greatly from all previous crises faced by the pre-war Liberal Government in that upon its conclusion, the Cabinet, the Parliament, and the Press were united in their praise and defense of Britain's foreign policy. [...]  Read more

This thesis is based on a study of graduate students in chemistry. It directs attention to the interaction patterns they develop in the course of their research, and the consequences these patterns have for their education and socialization into the role of chemist. Further, it raises certain questions regarding the values surrounding science.  Read more

The role of androgen in increasing calcium retention was elucidated in balance experiments designed to imitate the normal physiological course of retention just before laying. In these earlier experiments neither androgen alone nor estrogen alone evoked a statistically significant increase in calcium retention, even although the estrogen was given in amounts sufficient to increase greatly the serum calcium. [...]  Read more

Measurements have been made of the noise current fluctuations on the electron beam from a space-charge-limited, diode electron gun, in four sealed-off vacuum tubes. To perform the measurements a synchronous detection system was developed and evaluated. The variation of noise smoothing with changes in the gun anode voltage has been examined at 1,400 Mc/s., 4,250 Mc/s. and 9,520 Mc/s. [...]  Read more

The effect of tonicity on the rate and amount of histamine released from several in vitro preparations was studied. In hypertonic (1.2M) solutions of sucrose or mannitol, basic histamine liberators released significantly less histamine from dog liver particles, isolated mast cells, perfused guinea pig lungs, and perfused cat paws, than they did in isotonic solutions. When surface-active compounds were used as histamine liberators, no significant differences were found in the amount of histamine released in the two kinds of solution. [...]  Read more

The noise added to an electron stream by the interception of a fraction of the current has been studied experimentally at a frequency of 3 kmc/s. The electron beam was produced in a demountable vacuum system by a parallel-flow Pierce gun in a confining magnetic field. A series of circular apertures and mesh grids on a plate capable of being moved within the vacuum chamber allowed the interception of various fractions of the total beam current. The excess noise caused by interception was measured at the anode of the electron gun and at various points in a drift region.  Read more

Gill, J. E. (Supervisor)  Read more

Earlier econometric studies of import demand functions have been subject to two serious limitations. In the first place, they have been based on highly unreliable price series, that is, price series which have been subject to serious errors of sampling or measurement and, in any case, were ill-suited to the purpose at hand. In the second place, the estimates of import demand parameters have been derived from highly aggregative price and value series and have, therefore, been biased towards zero.  Read more

In 1856, Vulpian described the formation of a green colour when the adrenal medulla was moistened with ferric chloride; iodine produced a red coloration. The medulla was shown to develop a blue colour with ferric sulphate (Colin, 1856), while the formation of a brown colour on adding dichromate to adrenal extracts was described by Menle in 1865. These observations laid the foundation for subsequent attempts to estimate adrenaline by chemical means. Following the isolation of the physiologically active principle of the adrenal medulla, by Takamine and by Aldrich (1901), attempts were made to utilise various colour reactions for the estimation …  Read more

Although abnormal development has fascinated man from very ancient times, it has been only within recent years, as the management of nutritional and infectious diseases has been increasingly perfected, that critical attention has been given to human teratology. This increased interest has stemmed chiefly from the practical problems with which the obstetricians (Davis and Potter, 1957) and pediatricians (Warkamy, 1957 b) must deal and from the concern in this "atomic age" with radiation effects on gene mutation rates and on prenatal development (British Medical Research Council, 1956; National Academy of Sciences - National Research Council, 1956).  Read more

The recent development of convenient stimulating and recording techniques for use with essentially intact animals, anaesthetized and normally active, has made possible new experiments dealing with the neural basis of behavior. One problem which seems especially appropriate for investigation with such methods concerns the neural mechanisms of conditioning. The present study approaches this problem by the use of intra-cranial stimulation as a conditioned stimulus. Since historical accounts of conditioning have appeared in many textbooks, including a comprehensive treatment by Hilgard and Marquis (1940), a review of the entire literature is unnecessary.  Read more

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Factors which contribute to lasting settlement in the subarctic region of North America are examined and analyzed in this study. Diversification of the economic base is conducive to permanent settlement. A diversified, efficient and well developed transportation system is important. A good communications system including telephone, telegraph, teletype and radio links to the rest of the world help hold settlement. Pleasant living conditions, an extensive selection of consumer goods and services, social organizations and other cultural facilities aid in building pride and identification with the area.  Read more

Radioactive Xenon was produced by proton bombardment of LiI at selected proton energies up to 85 Mev in the 84" synchrocyclotron at McGill. Sources were prepared by imbedding the Xenon in the cooled aluminum cathode of a direct current discharge tube. Xenon of mass numbers 125, 123, 122, 121 has been studied. In addition the positron spectrum of I122 and electron conversion lines arising from the decay of I123 and I121 have been measured.  Read more

During an investigation on the isolation of Mycobacterium tuberculosis from cerebrospinal fluids of patients with the meningitis, we have observed and previously reported (64a) that in some patients tubercle bacilli could be isolated for long periods of time during treatment, and in others they could not be recovered beyond the first weeks of therapy. In both instances, however, the bacteriological findings became negative while the patients were sick, and their cerebrospinal fluid abnormal. Streptomycin and isoniazid, given to the patients continuously and for long periods of time, may vitiate the results of bacteriological examination.  Read more

The host and parasite relationship of the tubercle bacillus and tissue cells has been extensively studied since the days of Koch. The ability or virulent tubercle bacilli to penetrate and to multiply intracellularly causing damage to the host cell has not yet been fully explained. Suter (1952) believes that the fate of the infection could be attributed mainly to the inhibition or some vital function or the cell with its consequent destruction. Thus two properties at least may be necessary to enable tubercle bacilli to establish progressive infection.  Read more

Recent economic studies have shown that after the first spurt of economic growth in an underdeveloped economy, it is no longer certain what course development takes. It is obvious that economic growth is unlikely to start at all regions and sectors at the same time and proceed at the same speed. There are, however, reasons to believe that the split of some of the now underdeveloped economies into advanced and traditional sectors may be of considerable width and duration and this split may turn them into "dual economies".  Read more

Xanthate methyl esters of cellulose have great importance for the cellophane and viscose rayon industries. Though these industrial processes are well developed, the chemistry involved is still not fully understood, despite the considerable time and effort spent to solve this problem. The ultimate aim of the present research, the latest of several devoted to the subject, was to provide background information concerning the location and chemistry of the xanthate groups in cellulose xanthate.  Read more

The mosque (masjid) as the center of Muslim higher education was, from the latter part of the fifth centuries hijri (circa, eleventh centuries A.D.), being gradually replaced by the madrasah. In less than a hundred and fifty years after the establishment of the first madrasah in Khurasan, this institution became the most widespread educational system of higher learning in the Muslim world.  Read more

Present knowledge of the fundamental function of the nephron and its role in urine formation and elimination is still incomplete. The nephron bas been subdivided into a standard pattern of segments on the basis of its morphology, and various functions were ascribed to each of the segments through the results of physiological experiments (Richards, 1929). The modern expanded knowledge in the fields of physiology and biochemistry has made it apparent that the conventional segments are further subdivided into zones which divide the labour of urine formation, reabsorption and excretion.  Read more

In this paper I shall discuss the theory of what may be called material realism. The term "material" is borrowed fran Kant. He defined "material idealism" as "the theory which declares the existence of objects in space outside us either to be merely doubtful and indemonstrable or to be false and impossible." [...]  Read more

The method to discover the more important factors causing the movements in income-velocity is to examine the determinants of the demand for money. In the cash balance terminology of the Cambridge equation, k=M/Y real money balances are set equal to real monetary income times a number, k. The k, in the cash balance equation is the reciprocal of velocity. Any analysis in terms of the proportion that desired cash balances bear to income or total transactions can easily be restated in terms of the velocity of money.  Read more

In a previous study of the two rabbit Trichostrongyles, Trichostrongylus retortaeformis (Zader, 1800) and Graphidium strigosum (Dujardin, 1845), the writer studied under laboratory conditions, the influence of the main environmental factors on the free-living stages of these nematodes. In the present work, a closer examination of the micro-environments of the infective and adult stages of these worms has been attempted. The term micro-environment is used in this study to denote the immediate surrounding of the worm.  Read more

In this thesis, we assume a fixed space has been chosen once and for all and "set" will mean subset of that fixed space. Similarly "system" will refer to collection of subsets of that fixed space. Measure theoretic formulae acquire greater symmetry if we adopt Picone e Viola's notation [6] for union and intersection. The + and E signs are used for unions with + and Ec when these are over disjoint sets; while simple juxtaposition and TT are used for intersection.  Read more

The key to an understanding of the mechanism of many complex reactions came in 1925. In that year Sir Hugh Taylor (1) provided evidence which suggested that atoms and radicals might play important parts as chain carriers in many chemical reactions. Soon after, Rice and his collaborators (2) used Paneth’s (3) metallic mirror test to establish that the thermal decomposition of a number of organic compounds involves these transient species. Using simple elementary reactions involving atoms and free radicals, Rice and Herzfeld were able to devise successful mechanisms for many complex organic decomposition reactions.  Read more

In 1939 Rossby published a theory of wave motion in the atmosphere which formed the basis of later work on this subject. One year later Haurwitz extended the theory to waves of finite lateral extent and to wave motion on a spherical earth. During the next ten years various investigators, including Rossby, developed the theory further, attempting to approximate more closely the baroclinic nature of the atmosphere. [...]  Read more

This study is part of a program of research on the nature of "stage fright". The analysis to date has suggested that stage fright is an instance of a more general phenomenon of "social influence" where people in interaction are conceptualized as "actors" presenting themselves before "audiences". [...]  Read more

The islet like structures in the pancreas were first noted by Langerhans (1869) and later named after him by Laguesse (1893). That the islets produce a substance which plays a vital role in carbohydrate metabolism was suggested by subsequent investigations (Von Mering & Minkowski, 1890; Laguesse, 1893; Diamare, 1899). This substance was extracted and named 'Isletin' by Banting & Best (1922) and was found to be effective in controlling diabetes in depancreatized dogs and humans suffering from natural diabetes.  Read more

Among the many recent developments in chemical engineering operations, few are more characteristic of the post-war technology than the new contacting techniques. Primarily designed to effect intimate contact between a continuous fluid phase, and a finely sub-divided solid or liquid dispersed phase, they are finding application in a rapidly increasing number of physical and chemical processes.  Read more

The fertilized hen's egg at the beginning of incubation period consists of two main parts, the yolk and the egg-white or albumen. The yolk is the richer of the two in both nutrients and enzymes and consists of 35% fat, 15% protein, very little carbohydrate and about 50% water. [...]  Read more