Showing papers by "Memorial University of Newfoundland published in 1971"
TL;DR: It was concluded that cytochrome P-450 was responsible for most of the peroxidase activity of liver microsomes and a mechanism for the microsomal peroxIDase activity is proposed in which LAHPO oxidizes the P- 450 thiol ligand to form high spin P-420.
189 citations
TL;DR: Gut analyses of the green sea urchin Strongylocentrotus droebachiensis demonstrated that perennial phaeophytes, mostly fucoids and Alaria esculenta, were predominant in the diet, causing the dearth of non-coralline sublittoral algae in Newfoundland waters.
Abstract: Gut analyses of the green sea urchin Strongylocentrotus droebachiensis (O. F. Muller) demonstrated that perennial phaeophytes, mostly fucoids and Alaria esculenta, were predominant in the diet. Ephemeral species, coralline algae and animals, were consumed in smaller amounts when available. Grazing by the urchins is evidently responsible for the dearth of non-coralline sublittoral algae in Newfoundland waters. Lobsters, rock crabs, purple sea stars, other urchins, and a variety of fishes and birds feed on S. droebachiensis, but predation is apparently not effective in limiting the abundance of the urchin.
168 citations
TL;DR: The disappearance of antibody in malignant melanoma is explained by a loss of recognizable antigenicity in the metastatic melanoma cells or antigenic modulation, inability of the patient to continue producing an immune response to the melanoma, and a production of a “blocking” substance causing inactivation of the tumour specific antibodies.
Abstract: SINCE the demonstration of immunity to animal tumours1 evidence has accumulated2 indicating tumour specific antigens and corresponding antibodies in human malignant disease2–10. In malignant melanoma, antibodies have been detected only in patients with early or localized tumours11,12. After progression from localized to disseminated melanoma, antibodies are not detected in the patient's sera11. Attempts have been made to explain this disappearance of antibody in terms of a loss of recognizable antigenicity in the metastatic melanoma cells or antigenic modulation13, inability of the patient to continue producing an immune response to the melanoma; a disseminated tumour acting as an antigen “sponge” soaking up all available antibody, and a production of a “blocking” substance causing inactivation of the tumour specific antibodies.
95 citations
TL;DR: A comparison of the effectiveness of various heme compounds in catalyzing the peroxidase reaction showed that high spin P-420 was the most effective catalyst.
57 citations
TL;DR: In this article, the adaptive rather than purposive nature of female infanticide among the Pelly Bay Eskimos is stressed. But it is not satisfactorily explained by recourse to environmental-demographic explanations, and it is argued that the explanation for the uniquely systematic Infanticide practiced by this group is to be sought within the social dynamic of the individual household.
Abstract: Systematic female infanticide among the Pelly Bay Eskimos is subjected to functional analysis wherein the adaptive rather than purposive nature of the behavior is stressed. The trait is seen to be ecologically adaptive insofar as it increases population, and in turn ecosystem, stability. It is argued that the explanation for the uniquely systematic infanticide practiced by this group is to be sought within the social dynamic of the individual household, and is not satisfactorily explained by recourse to environmental-demographic explanations.
40 citations
TL;DR: In the map area, the Conception Group and the overlying St. John9s Formation of the Cabot Group constitute a continuous, conformable succession of Precambrian sedimentary rocks about 8000 ft thick, beneath an overburden of glacial drift; the base of the sequence is unexposed.
Abstract: In the map area, the Conception Group and the overlying St. John9s Formation of the Cabot Group constitute a continuous, conformable succession of Precambrian sedimentary rocks about 8000 ft thick, beneath an overburden of glacial drift; the base of the sequence is unexposed. Varied rocks of the Conception Group are predominantly green and purple and the St. John9s shales are various shades of gray. The Conception Group is divisible into three lithologic units: Drook, Freshwater Point, and Cape Cove Formations, in order of decreasing age. The Drook Formation is composed mainly of chert, siliceous argillite, and siltstone; the Freshwater Point Formation is siliceous argillite with minor sandstone; and the Cape Cove Formation is composed of cyclic beds that grade from graywacke at the bottoms through siltstone to argillite at the tops. The Cape Cove Formation contains, in its upper part, imprints of soft-bodied coelenterates represented by polyps as well as Medusae. These constitute a newly described fauna, the environment of which can be inferred from the sediments that enclose them. During late Precambrian time, deposition of the Conception Group began in isolated basins that subsequently joined to form a shallow marine environment. The sea continued to deepen and became deepest during deposition of the middle part of the Cape Cove Formation. Turbidity currents played an important role in the deposition of the Conception Group and the St. John9s Formation, and reached a maximum during deposition of the Cape Cove Formation. After a substantial thickness of the Conception Group had been deposited, the sea became shallow again, perhaps during deposition of the uppermost part of the Cape Cove Formation, and remained shallow during post-Conception times. During deposition of the St. John9s Formation, the intensity of turbidity currents decreased. Also, mild volcanism, here reported for the first time, occurred during early St. John9s time.
37 citations
TL;DR: Follow-up studies in the literature are reviewed and a number of cases of their own are added, where surgery is opposed for moral or professional ethical reasons, analysis of follow-up data on operated cases is irrelevant.
Abstract: Transsexualism has been clearly distinguished from homosexuality and transvestism (Benjamin (1953), Wainder (1968), Hoenig et al. (1964) and others) but though there are more than 700 cases reported in the world literature (Pauly (1965)), the aetiology of the condition is as baffling as ever. As in most areas of ignorance, there is no dearth of passionately held views on the subject, and as one’s notions of the aetiology will influence one’s views on treatment, the latter has often been a subject of heated controversy. (Mitscherlich (1950), Ostow (1953), Wiedeman (1953), Gutheil (1954), Meerlow (1967)). This is particularly so as regards hormone treatment and plastic surgery. The diversity of medical opinion concerning surgery for transsexual patients is evident from the replies to a questionnaire reported by Green et al. (1966). Where surgery is opposed for moral or professional ethical reasons, analysis of follow-up data on operated cases is irrelevant. However, where the issue is to be decided in terms of therapeutics, such data is most important. It is the best guide to future policy and procedure. In this paper we shall review follow-up studies in the literature and then add a number of cases of our own.
33 citations
TL;DR: It was concluded that inactivation is probably due to SH destruction and that modification of an essential methionine residue is unlikely to be a contributory factor.
30 citations
TL;DR: The samples of casamino acids were stored in a desiccator prior to preparation of the solutions which were analysed on a Beckman-Spinco automatic amino acid analyser, and the techniques used have been previously reported.
Abstract: An acid hydrolysate of casein, vitamin-free casamino acids (Difco), is commonly used as the amino acid source in early phases of nutrition work. Frequently, it is necessary to replace such a complex source with an equivalent, defined mixture of amino acids. This change in the medium often results in longer lag periods and reduced yields. The difference in yields can be the result of incomplete information on the composition of the complex source. The purposes of this paper are to present more complete data on the amino acid composition of and to briefly discuss other organic components of vitamin-free casamino acids (Difco). Amino acids.-A composite amino acid analysis obtained by using paper chromatography is currently available for casamino acids and is given in TABLE I, Column A (personal communication from Mr. V. R. Wheat, Technical Service, Difco; 7 Oct., 1970). The technique of Moore and Stein (1963) provides a more rapid and accurate means of determining the amino acids in a mixture. The samples of casamino acids were stored in a desiccator prior to preparation of the solutions which were analysed on a Beckman-Spinco automatic amino acid analyser (Model 121; Spinco Division, Beckman Instruments, Inc., Palo Alto, California). The techniques used have been previously reported (Nolan, 1970a.). The results of duplicate analyses of three lots of casamino acids are presented in TABLE I (Columns C, D, E). The accuracy of the data within each lot is -+ 5.1% or better. The values for ammonia, cysteic acid and tyrosine were not included in the accuracy calculations either because of susceptibility to external conditions or because the concentrations were too low.
30 citations
TL;DR: The larger, older scallops, especially those with damaged or deformed shells, are particularly susceptible to the alga, which has an adverse effect on its host; however, there is no evidence of parasitic castration.
27 citations
TL;DR: In this article, the reactions between sulphur dioxide and several metal carbonyls containing metal-metal bonds were reported, and only the compounds containing bridging carbonyl groups were found to react under the prevailing conditions.
TL;DR: In this article, quantum transition probabilities for the 0-3 vibration-rotation band correct through two orders in γ = 2B e ω e, to lowest order, these agree with previous perturbation theory calculations but disagree with the analogous semiclassical results.
TL;DR: In this article, the preparation of CpFe(CO)2SnPhnCI3-n (n=0, 1, 2, 3) by the reaction {Na[CpFe2] +PhnSnCl2-n→} are reported and their IR, NMR, and mass spectra discussed.
TL;DR: An Archaic Indian cemetery at Port au Choix, Newfoundland, dating from about 2000-1700 yrs B.C. is described in this paper, where excellent bone preservation allows a relatively complete reconstruction of the culture of the Archaic inhabitants of Newfoundland.
Abstract: An Archaic Indian cemetery at Port au Choix, Newfoundland, dating from about 2000-1700 yrs B.C. is described. For the first time, excellent bone preservation allows a relatively complete reconstruction of the culture of the Archaic inhabitants of Newfoundland. Comparing the assemblage from Port au Choix with other Archaic assemblages from Maine, New Brunswick, and Nova Scotia, especially the Moorehead or Maine Cemetery complex sites leads to the description of a "new" whole cultural tradition, the Maritime Archaic tradition, which existed throughout the Atlantic provinces and northern New England during the second millennium B.C. This tradition was based Gorenstein, S. 1968 Tepexi el Viejo. A postclassic fortified site in the Mixteca-Puebla region. Report to the National Science Foundation. Historia Tolteca-Chichimeca 1947 Fuentes para la historia de Mexico. Antigua Libreria Robreda de Jose Porrua e Hijos. Icaza, Francisco A. de 1928 Miscelanea Hist6rica. Revista Mexicana de Estudios Historicos, Appendix to Vol. 2:5-112. Jim6nez Moreno, W. 1952-53 Cronologfa de la historia de Veracruz. Revista Mexicana de Estudios Antropologia 13:311-312. Maziehcatzin, N. F. 1927 Descripci6n de Lienzo de Tlaxcala. Revista Mexicana de Estudios Historicos. Appendix to Vol. 1:59-90. Miranda, F. 1947 Rasgos de la vefetaci6n de la cuenca del rio de las Balsas. Revista de la Sociedad Mexicana de la Historia Natural 8:95-114. Paso y Troncoso, Francisco del 1906 Papeles de Nueva Espalna, Vol. 5. Spores, Ronald 1969 Settlement, farming technology, and environment in the Nochistlan valley. Science 116:557-568. Tezozomoc, H. A. 1878 Cr6nica Mexicana. 1944 edition, Editorial Leyenda. Wagner, P. 1964 Natural vegetation of Middle America. In Handbook of Middle American Indians, Vol. 1, edited by R. Wauchope, pp. 216-264. University of Texas Press, Austin. Zavala, S. 1938 Francisco del Paso y Troncoso. Su mision en Europa 1892-1916. Publicaciones de Museo Nacional. upon the distinctive resources found in that areacaribou, sea mammals, sea birds, and fish-and is very different from the Laurentian and Shield Archaic traditions as regards adaptation to a coastal environment and all the cultural variations concomitant with such an ecological adjustment. Department of Sociology and Anthropology Memorial University of Newfoundland February, 1970 Port au Choix today is a small fishing community located about half way up Newfoundland's Great Northern peninsula on the Gulf of St. Lawrence across which the coast of Labrador is visible at a distance of less than ten miles. During the fall of 1967, excavations of a theater basement were interrupted by the discovery of a mass of human bones and associ343 This content downloaded from 157.55.39.161 on Mon, 23 May 2016 04:58:18 UTC All use subject to http://about.jstor.org/terms
TL;DR: It would appear that succinate is the main end product of glycolysis in both the mantle and the adductor muscle of the giant scallop and the enzymes involved in succinate formation were found to be cytoplasmic.
Abstract: 1. 1. It would appear from the relative activities of key glycolytic enzymes that succinate is the main end product of glycolysis in both the mantle and the adductor muscle of the giant scallop. 2. 2. All but one of the enzymes involved in succinate formation were found to be cytoplasmic. 3. 3. The enzymes of the Bucher shuttle were found in the adductor muscle. 4. 4. The high activities of phosphoenolpyruvate carboxykinase and fructose diphosphatase are compatible with active glycogen synthesis.
TL;DR: In this article, various structural and textural features of a drusy granophyric ring-dyke intrusion can be explained in terms of the behaviour of magmatic water.
TL;DR: It was hypothesized that effective creativity training programs, as well as improving abilities associated with creativity, should necessarily influence particular aspects of an individual's cognitive style; in this case, stimulus preferences.
Abstract: Summary-It has been suggested that modifications of a person's cognitive style may be instrumental in facilitating creative behaviour From this, it was hypothesized that effective creativity uaining programs, as well as improving abilities associated with creativity should necessarily influence particular aspects of an individual's cognitive style; in this case, stimulus preferences 36 Ss participated: E Ss completed a creativity training program; controls were students who had enrolled for the creativity training program but not yet commenced it (Cl), and students who had completed a developmental reading program (C2) The Alternate Uses Test was used to measure the effects of the training on fluency and flexibility; the Revised Art Scale was used to measure stimulus preferences of Ss Description of the data by simple analyses of variance and Duncan's multiple-range test supported the hypothesis The discussion presents suggestions for development of future creativity training programs Earlier laboratory demonstrations (Renner, 1970) have suggested that it is he indirect modification of particular aspects of a person's cognitive style in the direction of complexity which may be the change instrumental in facilitating creative behaviour From this, it was hypothesized that educational training programs designed to bring about significant improvement in abilities associated with creativity (verbal fluency, verbal flexibility) should, if they are to be effective, influence some aspects of an individual's cognitive style Especially, the program may be expected to modify an individual's stimulus preferences, for such preferences are perceptual decisions along a continuum of complexity (Barton, 1952), and it has been shown that increased perferences for complexity are associated with facilitated creativity (Renner, 1970)
TL;DR: In this article, transfer of training was investigated in bright and dull subjects of the same mental age in two independent studies and the results were discussed in terms of their support of Ferguson's theory of human ability and their implications for intelligence testing and training procedures.
Abstract: Summary. Transfer of training was investigated in bright and dull subjects of the same mental age in two independent studies. A comparison among test-retest (T-T), practice-test (P-T) and test-practice-test (T-P-T) conditions revealed significant transfer in bright but not in dull subjects. Bright subjects also showed significantly higher transfer when given a pretest. The results are discussed in terms of their support of Ferguson's theory of human ability and in terms of their implications for intelligence testing and training procedures.
TL;DR: In this paper, the authors generalize the idea of grouping the CP violation theories into two classes by Fishbach and Nieto and show that the stricter unitarity bound to |α| = |KL|KS| discussed by these authors can actually be chosen arbitrarily in a wide range of values subjected only to certain restrictions.
Abstract: We generalize the idea of grouping theCP violation theories into two classes by Fishbach and Nieto. We find that the so-called stricter unitarity bound to |α| = |〈KL|KS〉| discussed by these authors can actually be chosen arbitrarily in a wide range of values subjected only to certain restrictions. We also wish to point out that there always exists a lower bound to |α| which is either equal to zero or, in some cases, to a positive value known in terms of the partial decay rates of KL and KS. A discussion with reference to experimental data and the Wu-Yang triangle is again given for comparison.
TL;DR: In 1970, with the cooperation of the Churchill Falls (Labrador) Corporation Limited, an intensive biological research program was commenced in the Churchill falls area as mentioned in this paper, with the initial objective is to study the spray zone of the Falls before it is altered by the diversion of Churchill River.
TL;DR: Crown gall (plant tumour) arises when a virulent strain of Agrobacterium tumefaciens is introduced into a plant conditioned by wounding and disc gel electrophoresis studies on the normal plants and induced tumour tissue resolve the situation.
TL;DR: In this article, a collision-induced 1st overtone infrared absorption band of deuterium was observed at room temperature at a path length of 194.3 cm at pressures up to 800 atm.
TL;DR: In this article, a new form of general combined pulse modulation scheme incorporating the pulse frequency and the pulse width modulation laws is proposed, and three classes of combined pulse modulators of practical importance are defined and a non-linear discrete equivalence of a feedback system containing a general combined-pulse modulator is obtained.
Abstract: In this paper, a new form of general combined pulse modulation scheme incorporating the pulse frequency and the pulse width modulation laws is proposed. Three classes of combined pulse modulators of practical importance are defined and a non-linear discrete equivalence of a feedback system containing a general combined pulse modulator is obtained. A practical implementation of one form of the combined pulse modulator as well as a few experimental results of a feedback system containing the modulator are presented.
TL;DR: In this paper, a complete vibrational assignment for C 2 H 4 N 2 and a partial assignment of C 2 D 4 N2 was proposed, and three structural isomers of HDCNNCHD, depending on relative position of deuterium substitution, were deduced to exist.
TL;DR: The deterioration of the invertebrate fauna of a stream in St John's, Newfoundland, is described and discussed, indicating a slight improvement in the condition of the stream.
TL;DR: In this article, a study of the spread which results from the discharge of a buoyant effluent at the free surface is made, and Similitude is applied to develop functional equations for rate of spread, concentration, and shape, and experimental data are given for the rate of spreading.
Abstract: A study is made of the spread which results from the discharge of a buoyant effluent at the free surface. Similitude is applied to develop functional equations for rate of spread, concentration, and shape, and experimental data are given for the rate of spread. Previously published data are used to demonstrate the validity of the other derived equations and to show how comprehensive mixing diagrams can be prepared by logical experimentation. Methods of choosing scales for hydraulic models are considered. Also shown is how the effect of viscous influence limits the available choice.
TL;DR: The clinic, instead of being viewed as merely a place for difficult and incurable patients, is now seen as a useful alternative in the treatment armamentarium of the outpatient department.
Abstract: This paper describes an outpatient clinic where many of the patients are chronic attenders who resist all attempts at discharge. Their dependency needs and the difficulty of one-to-one treatment are outlined. On the one hand there is the almost insatiable demand for magical medications, and on the other the frustration of the therapists trying to deal with this situation. To circumvent these difficulties, the concept of institutional transference was fostered by a policy of disengagement. As a result a flexible therapeutic set up was evolved allowing for the fulfillment of dependency needs and the maintenance of satisfactory morale, not only among the patients but also among the entire treatment staff. The clinic, instead of being viewed as merely a place for difficult and incurable patients, is now seen as a useful alternative in the treatment armamentarium of the outpatient department.
TL;DR: The inhibition of fructose diphosphate by AMP and the activation of phosphoenolpyruvate carboxykinase by cyclic AMP in the adductor muscle were found to be temperature-dependent.
Abstract: 1. The inhibition of fructose diphosphate by AMP and the activation of phosphoenolpyruvate carboxykinase by cyclic AMP in the adductor muscle were found to be temperature-dependent. 2. The significance of these findings is discussed.