showing 36 of ~574560 from 574555 documents
El proceso de transculturación en Puerto Rico : el Partido Nacionalista como instrumento de liberación (1898-1965)
1986
Osteoma osteoide : estudio de 14 casos
1986
The osteoid Osteoma is relatively a non uncommon benign tumour whose radiological and clinical findings usually present diagnosis problems. 14 cases of this tumour have been treated at this Orthopaedic Department along the. last 10 years. The block resection of the tumoral nidus seems to be the electcd treatment, not having observed any recurrencies.
Quiste sinovial intraneural
1986
A case of ganglion of the lateral popliteal nerve in a sixty-six year olf woman is reported. The pathologic and surgical treatment and follow-up are described. The problems of the diagnosis ethiology of this tumor are collected and discussed.
New balloon catheter for prolonged percutaneous transluminal coronary angioplasty and bypass flow in occluded vessels.
1986
A new balloon catheter was developed for continuous perfusion of coronary arteries during angioplasty (CPC catheter). Steerable Gruntzig balloon catheters (3.7 mm) with two lumina were formed. The first lumen was used for balloon inflation. Side holes to the second lumen proximally and distally to the balloon were created for coronary perfusion even during inflation phase. At a perfusion pressure of 120 mmHg, a flow rate of 63 +/- 3 ml/min with 0.9% saline and 43 +/- 1 ml/min with plasma expander were measured. In experiments on five dogs, dilation time until appearance of signs of ischemia could be prolonged in three of five dogs from 30 to 40 s, 120 to 203 s, and 180 to 420 s comparing co…
Optic pit syndrome
1986
In a study of 15 eyes with optic pits fluorescein angiography revealed that only pits associated with serous detachment of the macular retina showed fluorescence in the late venous phase, while the pits uncomplicated by detachment remained hypofluorescent throughout the test. This finding strongly supports the hypothesis that the subretinal fluid producing the macular detachment originates from leakage of vessels located in the floor of the pit. In addition a high incidence of anomalies was found to be associated with optic pits. Therefore the author suggests to call the association between optic pit and large optic disc, parapapillary chorioretinal changes, cilioretinal vessels, situs inve…
Artropatía neuropática diabética del tobillo
1986
An unusual localisation of Charcot's joint disease is the ankle. A 31 year old patient developped a Charcot's joint after a trivial trauma, the spontaneus fracture of the tallus was followed by a quick joint destroy.
“Study of Pulsar Light Curves by Cluster Analysis”
1986
The distribution of the phase numbers, corresponding to the arrival times of the gamma-ray photons detected by the COS-B satellite from the directions of the Crab and Vela pulsars, is analyzed by a clustering technique with the aim to detect possible microstructures in the pulsed emission. The method is found to be promising especially in view of the future gamma-ray experiments where better photon counting statistics is expected.
Instability and bistability during the growth of a corrosion scale on metals and alloys
1986
This paper summarizes the main results for the interpretation of the self organized corrosion scales observed in oxidation or sulfidation of some metals or alloys. It consists also of a reconsideration of the classical theoretical concepts used in Reactivity of Solids. It proposes new theoretical tools that have been fruitfully utilized in other topics : non linear and coupled processes, stability analysis and bifurcation theory. Some examples are developed, where the corrosion kinetics at high temperature are interpreted in term of chemical bistable system able to oscillate spontaneously and mechanochemical couplings are also taken into account. In according with experimental results, all …
Taking stock of European university cooperation : A new point of departure
1986
Texto del discurso pronunciado por José Vidal-Beneyto como representante de Marcelino Oreja (Consejo de Europa) en: Symposium of the European Institute of Education&Social Policy on "High Technology and the European Response: The contribution of higher education". Université Paris IX-Dauphine, París, 24 de enero de 1986.
Электрокалорический эффект в сегнетоэлектриках со структурой перовскита
1986
Photolysis of Adsorbed Phases: Ethanoic Acid-Insulators and Semiconductors Systems. Influence of Acid-Base Properties.
1986
The paper reports the results of experiments in which the photodecomposition of adsorbed ethanoic acid (and in few cases of adsorbed acetone and ethanol) was carried out by using several silica gel samples, whose properties were modified by adding oxidic dopants as γ-Al2O3, which is acidic in character, and MgO, which is mainly basic. Also the related system MgO-Al2O3 was investigated. Few IR spectra on selected pure specimens and on specimens containing adsorbed ethanoic acid were recorded with the aim of following the variation of the surfaces-adsorbate interaction with the variation of the acid-base properties. It was also of interest to compare the photoreactivity of insulators and semi…
Comparative histological, histochemical, immunohistochemical and biochemical studies on oestrogen receptors, lectin receptors, and Barr bodies in hum…
1986
The present study performed on a total of 567 cases of human female breast cancer compares the results of the biochemical assay (dextran-coated charcoal assay = DCC) for oestrogen receptor (ER) with those of several morphological methods developed for the detection of the ER or for the prediction of prognosis by use of other systems (FSA = fluorescent ligand binding assay, ER-ICA = monoclonal antibody assay for ER, LRA = lectin receptor assay using peanut agglutinin, and Barr body estimation). Whereas no correlation at all was observed among the results of the DCC and those of the FSA and Barr body estimation, the ER-ICA and the LRA showed an unanimous tendency towards higher values of ER w…
Informe sobre la juventud Valenciana 1986. Resumen
1986
Resumen de la investigación realizada sobre la Juventud Valenciana en 1986 por encargo de la Conselleria de Cultura, Educació i Ciencia
Fracturas de la diáfisis del fémur en el niño : análisis estadístico mediante modelos multivariantes
1986
A prospective study of femoral shaft fractures in children less than 14 years old has been practised in 71 patients annually revised clinically and radiographically. Processing of data has been carried out with multivariate models. Femoral overgrowth (SF) averaged 8'63 mm. (range 1-21), and was found to be influenced by: age (greater SF in children between 3 and 9 years); initial displacement of fracture-fragments (greater SF in fractures severely displaced), and overriding of the fragments at time of healing ( overriding diminish overgrowth). SF was a universal phenomenon that occurs fundamentally along the first year of evolution, extending in the 27 per cent of the cases until the fifth …
SUBTYPES OF MUSCARINE RECEPTORS IN THE GUINEA-PIG ILEUM
1986
(e,e′f)-Coincidence Experiments on Uranium Isotopes
1986
(e,e′f)-coincidence experiments represent the most powerful tool to investigate the decay properties of giant multipole resonances, especially of the isoscalar giant quadrupole resonance (GQR), in heavy nuclei. Besides the advantages of the inelastic electron scattering, the coincidence between the fission fragments and the scattered electron causes a complete suppression of the huge radiation tail. The study of the fission decay of giant resonances in heavy nuclei provides interesting information about the coupling of the collective phenomena of fission and giant resonances. In particular the fission decay of the GQR has been subject of controversial experimental studies, using hadrons [1]…
Coincidence Electron Scattering (e, e′c) in the Giant Resonance Region of 28Si
1986
In the nuclear continuum region, the inherent power of inelastic electron scattering to map out the Fourier transforms of the transition charge and current densities is completely exploited only if the inelastically scattered electron is detected in coincidence with a nuclear decay product c. The coincidence requirement effectively eliminates the strong elastic radiative tail which hitherto plagued the analysis of single arm (e,e′) experiments.
Attitudes concerning nuclear war in finland and in the united states
1986
Four hundred seventy residents of Ridgewood, New Jersey, and 493 residents of Jyvaskyla, Finland, were randomly selected and interviewed about their attitudes concerning nuclear war. In both areas, a high proportion of the samples believed that some kind of nuclear incident is likely in the next decade. The vast majority stated that a nuclear war could not be won and that they expected to die in the event of war. About three fourths in both communities seldom discuss nuclear issues with anyone including their own children, and only one fourth of the U.S sample and about one half of the Finnish sample have ever done anything personally to oppose the arms race. About one half of the Americans…
Optimization of the domain in elliptic variational inequalities
1986
Etude de la dynamique de population de Convolvulus arvensis L. Action et comportement du 2,4-D et du glyphosate dans la plante
1986
*INRA URD BP 86510 21065 Dijon cedex (FRA) Diffusion du document : INRA URD BP 86510 21065 Dijon cedex (FRA) Diplôme : Dr. d'Université
El vecindario de Campoflorido
1986
En el artículo se presenta la parte correspondiente al antiguo Reino de Valencia del "Vezindario de Campoflorido", realizado entre los años 1712 y 1713. La transcripción de los datos del manuscrito está precedida por una breve exposición de los diversos análisis e interpretaciones que se han hecho de esta fuente demográfica desde el siglo XVIII.
Les formations carbonatées du Dortan (Ain) : premières observations
1986
Calcium carbonate, deposits have built four terraces, near Dortan, in the Southern part of Central Jura (46° lat. N). These deposits may just cover other terraces associated themselves with an ice-dammed lake. They include two types : 1) tufa deposits, porous and hard, with conspicuous tree remains ; 2) lake chalk, compact and brittle, snowing lenses and, sometimes, varves, with shells and pieces of charcoal. C 14 dating and analyses should allow to insert these deposits in the Jura Holocene chronology and to explain their situation at such a high latitude.
El torito de bronce de Segorbe: Ensayo de aproximación cronológico-cultural
1986
Operationen und Reinterventionen an Herzklappen bei bakterieller Endokarditis
1986
Erst seit den fruhen 60er Jahren ist eine Klappenchirurgie am offenen Herzen durch den Einsatz der Herz-Lungen-Maschine moglich geworden. Dennoch waren bis 1970 nur etwa 40 Berichte uber Herzklappenoperationen bei Endokarditis veroffentlicht. Zweifellos basierte diese Zuruckhaltung auf dem Grundsatz, keine Operation oder Fremdmaterialimplantation bei floriden entzundlichen Prozessen wegen der Gefahr der Implantatabstosung und intraktablen Infektion vorzunehmen. Die aus der Not geborene Erfahrung lehrte erst spater, das eine solche Infektion oft erst und nur durch die Operation zur Abheilung kam und mit etwa 10% relativ selten eine Prothesenendokarditis resultierte. Umgekehrt als zunachst an…
Etiología del quiste óseo unicameral
1986
A 6 year-old gírl with a solitary unicameral cyst is reported. Three months before the patient had been diagnosticated of transient synovitis of the hip with a normal X-Ray pieture. This retrospective foIlouw-up suggests the tumor vascular theory.
Brain Aging in Insects
1986
The role of the central nervous system (CNS) in the modulation of homeostatic mechanisms and the aging process especially in mammals, has been well investigated by several authors (Blumenthal 1970, Ordy and Brizzee 1975, Hoffmeister and Muller 1979, Samorajski 1980, Buschmann 1982, Hoyer 1982, Frolkis et al. 1984). In insects the crucial role of the CNS in developmental processes is well established; however, it is an open question whether the brain also governs the aging processes.
A phenomenological approach to the mechanical breakdown of anodic oxide films on zirconium
1986
Abstract A phenomenological theory of the mechanical breakdown of films growing on valve metals during galvanostatic oxidation is presented and discussed in detail for ZrO2 anodic films. It is shown that the mechanical breakdown voltage, Vmb, can be linearly related to the logarithm of the anodizing current density both in the case of constant and variable critical thickness, Lc, at which the breakdown occurs. It is also shown that the Amb and Bmb parameters of the relationship: Vmb = Amb + Bmb log i are strictly related to the kinetic parameters of growth of the films in the different solutions. The expressions of Amb and Bmb parameters are derived for films grown in the presence as well a…
Interpretation of the Solar 48Ca/46Ca Abundance Ratio and the Correlated Ca-Ti-Cr Isotopic Anomalies in Inclusions of the Allende Meteorite
1986
In the past, astrophysical models encountered severe difficulties in explaining the solar 46,48Ca abundances or the correlated Ca-Ti-Cr isotopic anomalies observed in inclusions of the Allende meteorite [1–3]. Among the various attempts. SANDLER et al. [4] suggested the production of neutron-rich stable Ca-Ti-Cr isotopes in a high neutron density environment of ~107 mol/cm3 with a neutron-exposure time of 10 s. Assuming the initial abundances to be solar and applying Hauser-Feshbach neutron-capture crosa sections, the above authors have calculated a 48Ca/46Ca abundance ratio which is only a factor of 2.6 smaller than the observed solar value of 56. However, the predicted isotopic anomalies …
Dimensional Classification as an Instrument for Biological Research in Endogenous Depression
1986
Biological psychiatry needs highly reliable classifications capable of supplying research with homogeneous groups of patients. Operational diagnoses (OPD abbreviated) have been introduced to serve this aim. At present, research in endogenous depression can choose among more than ten different operational diagnoses, all purporting to be valid for diagnosing endogenous depression. Eight of these operational diagnoses are listed in Table 1.
Characterization of the mode of action of the experimental herbicide LS 82-556 [ (S)3-N-(methylbenzyl) carbamyl-5-propionyl-2,6 lutidine
1986
34 ref.; International audience
Orfebrería púnica: los collares de Ibiza en el Museo Arqueológico Nacional de Madrid
1986
Toto spielen mit System oder Wie verliere ich beim Wetten möglichst wenig?
1986
Wer beim (Fusball-)Toto sein Geld einsetzt, mochte (moglichst viel) Geld gewinnen. Dazu mus man die Resultate moglichst vieler der von der Totogesellschaft ausgewahlten Spiele richtig vorhersagen (1 = Sieg der Heimmannschaft, 2 = Auswartssieg, 0 = Unentschieden). Am besten ist es naturlich, alle Spiele richtig vorhergesagt zu haben (in Deutschland mus man zur Zeit 11 Ergebnisse tippen). Man gewinnt aber in der Regel noch etwas, wenn man nur ein Spiel falsch getippt hat. Manchmal gibt es besonders unerwartete Spielausgange, z. B. am ersten Spieltag oder im Karneval, wenn die Mannschaften verruckt spielen; unter solchen Umstanden wird auch noch fur den 3. Rang (= Tippreihen mit zwei Fehlern) …
Effects of chemical and surgical ganglionectomy on electrical activity of the pineal gland of male rats.
1986
In order to elucidate further the role of sympathetic innervation for pineal function, the influence of sympathectomy on the spontaneous electrical activity of single cells in the pineal gland of adult male rats was investigated. Extracellular single-unit recordings were made during nighttime in the pineal gland of urethane-anesthetized, blinded adult male rats that had been treated neonatally with 6-hydroxydopamine, or that were ganglionectomized either during, or 12-16 h or 36-40 h, prior to the recording experiment. These experiments revealed that the excitatory influence of the sympathetic system on pineal nocturnal electrical activity can be abolished by either chemical sympathectomy o…
Recambios artroplásticos de cadera por fracasos mecánicos
1986
Twenty-five from 440 cases of hip arthroplasty were treated ·by rescue operation because of mechanical failures after the first operation. The resurfacing model of arthroplasty" gave the poorest results. In 7 patients (28%) the results were very poor. The complications are analysed and the bibliography is reviewed. The authors hop the new types of cementless prothesis are the best solution for these failures