Showing papers by "University of Auckland published in 1977"
TL;DR: Every fuzzy topological space is quasi-uniformizable and characterize uniformizability in terms of a type of complete regularity and a natural uniformity is constructed on the fuzzy unit interval.
289 citations
TL;DR: In this article, the major results of an investigation of how patterns, turbulence intensity distributions and boundary shear stress distribution in the scour zone of a circular pier under clear water scour conditions were summarized.
Abstract: The paper summarises the major results of an investigation of How patterns, turbulence intensity distributions and boundary shear stress distribution in the scour zone of a circular pier under clear water scour conditions.
260 citations
TL;DR: Two unrelated children with poor postnatal growth, mental subnormality, similar physical appearance and nasal papillomata present a syndrome for which no cause has been found.
Abstract: Two unrelated children with poor postnatal growth, mental subnormality, similar physical appearance and nasal papillomata present a syndrome for which no cause has been found.
174 citations
TL;DR: In this paper, a linear stability analysis is applied to a system consisting of a horizontal fluid layer overlying a layer of a porous medium saturated with the same fluid, with uniform heating from below.
Abstract: A linear stability analysis is applied to a system consisting of a horizontal fluid layer overlying a layer of a porous medium saturated with the same fluid, with uniform heating from below. Surface-tension effects at a deformable upper surface are allowed for. The solution is obtained for constant-flux thermal boundary conditions.
171 citations
153 citations
TL;DR: Small plastic pellets, of the kinds commonly being recorded as contaminants on beaches, and in coastal as well as oceanic waters adjoining industrialized regions of the Northern Hemisphere are also widely distributed on the beaches of New Zealand as mentioned in this paper.
116 citations
01 Jan 1977
TL;DR: Parturition in sheep is initiated by a sharp rise in the rate of secretion of cortisol by the fetal adrenal, which stimulates release of prostaglandin F2alpha (PGF2alpha) from the maternal placenta and to a lesser extent from the myometrium.
Abstract: Parturition in sheep is initiated by a sharp rise in the rate of secretion of cortisol by the fetal adrenal Increased secretion is due partly to enhanced responsiveness to corticotropin (ACTH) and partly to increased fetal concentrations of corticotropin Cortisol acts on placental enzymes active in the biosynthesis of oestrogens from progesterone Thus placental secretion of oestrogen increases and that of progesterone decreases This change in the ratio of oestrogen: progesterone, particularly the rise in oestrogen, stimulates release of prostaglandin F2alpha (PGF2alpha) from the maternal placenta and to a lesser extent from the myometrium PGF2alpha enhances the myometrial response to oxytocin and, after a latent period, stimulates contractions The onset of parturition is normally associated with softening of the cervix, the mechanism of which is uncertain Uterine contractions in the presence of a distensible cervix lead to parturition
113 citations
110 citations
TL;DR: Static tensile tests and accelerated fatigue tests were used to investigate the mechanical durability of glutaraldehyde preserved bovine and porcine mitral tissue with a view to gaining some understanding of the long-term functional behaviour of preserved heterografts.
98 citations
TL;DR: Variation in recruitment between years results in changes in mean density of these species over the full period and interspecific competition between A. paradigitalis and A. scabra results in a higher mortality rate of large individuals of the latter and its confinement to lower intertidal levels.
90 citations
TL;DR: A sequence of isograds based on the appearance or disappearance of pumpellyite, lawsonite, Na-amphibole, omphacite, fully-ordered graphite, epidote, almandine, and barroisitic hornblende have been mapped in the Ouegoa district.
TL;DR: The settling behaviour and substratum preferences of advances brachiolaria larvae of Stichaster australis and Coscinasterias calamaria were determined with larvae reared in the laboratory and the results correlated with field observations of habitat preferences of juvenile starfish at Maori Bay.
TL;DR: It is concluded that amnion is a highly metabolically active tissue that can be maintained in a viable state in a suitable medium.
TL;DR: Results of complementary replica experiments indicate that lipid collapse and protein particle deformation contribute to the appearance of the membrane fracture face seen in the final replica.
Abstract: The freeze-fracture technique is now widely used in the study of membranes, but it should be stressed that it shows internal hydrophobic planes of membranes, prepared under physical conditions far removed from those prevailing in vivo. Hence there is considerable potential for artefact. Work on the membrane lipid component, the intramembrane particles, and their aggregation under certain conditions, is reviewed in the context of fact versus artefact. Particular attention is paid to the results of complementary replica experiments, performed in the author's laboratory and elsewhere, which indicate that lipid collapse and protein particle deformation contribute to the appearance of the membrane fracture face seen in the final replica. A model, showing the effects of freeze-fracturing on membranes, is presented.
TL;DR: Two commercially prepared, glutaraldehyde-treated porcine heterograft valves mounted on flexible stents have been tested in a pulsatile-flow water tunnel and it is shown that the leaflets do not open as readily as the antibiotic-treated homograft valve.
TL;DR: Proportional feedback is clearly superior to binary feedback, and the addition of a binary signal to proportional feedback does not reliably enhance control, which is consistent with an operant conditioning interpretation of feedback control.
Abstract: Six male and 6 female volunteers formed three groups of 4 subjects in a study on the efficacy of different forms of visual feedback on control of heart rate (HR). One group received proportional feedback from a meter plus a binary success signal, one group received only proportional feedback, and one group received only the binary signal. Subjects received 6 acquisition sessions and 4 extinction sessions. For HR increase, groups receiving proportional feedback showed mean control over the last 2 acquisition sessions of +10 bpm, whereas the group receiving only binary feedback showed control of +4 bpm. For HR decrease, both groups receiving proportional feedback showed mean control over the last 2 acquisition sessions of -4 bpm, whereas the group receiving only binary feedback showed negligible control. During extinction there was no immediate reduction hi control of either HR increase or HR decrease but both declined over extinction sessions. Results indicate that proportional feedback is clearly superior to binary feedback, and that the addition of a binary signal to proportional feedback does not reliably enhance control. Results are consistent with an operant conditioning interpretation of feedback control.
TL;DR: The Sermo Lupi ad anglés as mentioned in this paper is a collection of Wulfstan's sermons written in the Old English period, and it is the most skilfully and tightly constructed of all his sermons.
Abstract: Sermo Lupi ad Anglos has attracted far more attention by its subject matter than have other Wulfstan sermons, because its apparent topicality is of interest to students of the Old English period. Like all Wulfstan's sermons, though, it has been chiefly esteemed for its forceful oratory – it is this sermon, indeed, which is responsible for his reputation as a fiery orator in the Old Testament vein. Most readers have praised it more enthusiastically than Sir Frank Stenton did, when he stated that it ‘makes its effect by sheer monotony of commination’. But even its admirers have regarded it as little more than a stringing together of the nation's sins and tribulations which impresses by the horrific accumulation of detail. Such a view, it will be argued, is a drastic oversimplification. The Sermo Lupi presents a number of closely related themes, and the catalogues are but one aspect of the development of these themes. Certainly the seemingly inexhaustible fashion in which Wulfstan heaps up specific instances of the nation's iniquities and misfortunes contributes much to the force of his indictment, but the sermon is neither formless nor repetitive. On the contrary, it is the most skilfully and tightly constructed of all his sermons.
TL;DR: A regional melange zone, 150 km long and 30 km wide, forms the southern boundary and structural capping to a high-pressure blueschist belt in northern New Caledonia.
Abstract: A regional melange zone, 150 km long and 30 km wide, forms the southern boundary and structural capping to a high-pressure blueschist belt in northern New Caledonia. The disrupted country rocks in the melange zone are Mesozoic metagrey-wackes and Eocene chert-limestone sequences which have been penetrated from below by tectonically-injected ophiolite slivers containing metamorphosed serpentinite, gabbro, dolerite, basalt, tuff, chert and shale. An ocean crust origin for these rocks is indicated by chemical, mineralogical and radiometric data from coastal outcrops at Anse Ponandou on the northeast coast. The age (41 m.y.), metamorphic environment (350 ° C at 7 kb), and mineral association (acmitic jadeite-riebeckite-pyropic spessartine-pistacitic epidote-lawsonite-high Si phengite) are significantly different from those of the adjacent regional high-pressure schist belt, indicating a separate structural site for blueschist metamorphism of buried ophiolitic ocean crust during early Tertiary orogenesis.
TL;DR: In this paper, a comparison of the published experimental data on scour depths at bridge piers shows that a large range of values at what appears to be identical conditions can arise from different grain size distributions of the bed material used.
Abstract: A comparison of the published experimental data on scour depths at bridge piers shows a large range of values at what appears to be identical conditions. It was therefore decided to investigate whether or not this variation could arise from different grain-size distributions of the bed material used. The experiments were carried out in a reecirculating flume 38 m long, 1.5 m wide, and 1.2 m deep, using a 100 mm-diam cylindrical pier. In the experiments, the \id\d5\d0 grain size and the grain-size distribution were systematically varied. Trial runs showed that for a given shear velocity, depth of flow greater than about two pier diameters had no observable effect on the depth of scour, and thereafter all tests were run at a flow depth of 0.60m, or six pier diameters. The velocity of the approach flow and the shear velocities were determined from the slope of the velocity distribution. Details of the study have been reported by Ettema together with a detailed evaluation of the development of the scour hole.
TL;DR: Cultured smooth muscle cells from pig aorta subjected to centrifugation are consistent with the hypothesis that mechanical stress, such as hypertension, leads to increased accumulation of glycosaminoglycans in the aortic wall and that secondary trapping of lipoproteins by sulphated glycosamination produces atherosclerotic plaques.
TL;DR: In this paper, the penile response in six adult males was monitored while pornography was presented repeatedly for six trials over a period of two weeks, and a significant decrement in response to repeated stimuli occurred, although novel stimuli continued to elicit a response.
TL;DR: Tests on samples from 5 other older patients with untreated C.F.N. have yielded no evidence for false-negative results, and a new method of testing stool samples from newborn babies for cystic fibrosis, a colourless substrate, releases yellow p-nitroaniline when hydrolysed by trypsin, gives negligible colour.
TL;DR: In this paper, the numerical synthesis of ionograms by ray-tracing in an analytic two-dimensional ionosphere is simplified by a technique which avoids the usual wastage of ray tracings.
TL;DR: In this paper, 30 species belonging to 23 genera of coral are recorded from upper Otaian and Altonian (lower Miocene) rocks of the Waitakere Ranges.
Abstract: Thirty-one species belonging to 23 genera of coral are recorded from upper Otaian and Altonian (lower Miocene) rocks of the Waitakere Ranges. The coral fauna consists of 12 species of hermatypic (reef) types in nine genera and 19 species of ahermatypic forms in 14 genera. Most specimens occur in redeposited rudites that flowed into bathyal seas from unstable areas around a line of active volcanoes. Several rich ahermatypic coral associations are thought to have been derived from areas of pebbly substrate near the top of a steepening submarine slope (50–350 m). Two hermatypic coral associations are inferred to have come from scattered communities growing on shallow-water boulder banks (0–90 m) around volcanic islands. Comparison of the hermatypic fauna with that of present-day reefs indicates that seasonal sea'temperature were 5°–7°C warmer than now and that a fauna of over 20 hermatypic genera may have been present. The hermatypic genus Goniastrea is recorded from New Zealand for the first time a...
TL;DR: On refeeding after starvation, the resynthesis of rabbit-liver glycogen proceeds inhomogeneously and over-produces material of low molecular weight, and it is concluded that glycogen synthesis proceeds by two routes which results in the production of polysaccharide of high molecular weight which has a protein backbone capable of forming disulphide bonds.
TL;DR: Several congeners of m -AMSA were shown to form similar or identical adducts both in vivo and in vitro, and at rates which correlated with their reactivity towards simple organic thiols.
TL;DR: The effect of disulphide bond-breaking reagents upon the size-distribution of glycogen molecules was studied to study the high molecular weight glycogen molecule synthesized in in vitro experiments.
TL;DR: Antisera, with cross reactive antibodies removed by affinity chromatography, were used in the immunoperoxidase-bridge technique to study the distribution of oxytocin and vasopressin together with neurophysin in the hypothalamo-neurohypophysial system of the rat, which supports the hypotheses that they are synthesised in different neurons and are transported along different axons.
Abstract: Synthetic oxytocin and [8-arginine]-vasopressin conjugated to bovine thyroglobulin were used to induce specific antibodies in rabbits. The specificity of the anti-oxytocin serum, and the suitability of the anti-[8arginine]-vasopressin serum for the detection of [8-lysine]-vasopressin, was evaluated by immunofluorescent studies of the respective hormones bound to Sepharose 4B particles. Oxytocin and [8-lysine]-vasopressin were specifically localized in the paraventricular (PVN) and supraoptic (SON) nuclei of the pig hypothalamus using the immunoperoxidase staining technique.