showing 36 of ~574560 from 574555 documents
Радиационные и столкновительные характеристики атомов и молекул. Теллур
1989
В сборнике приводятся результаты экспериментальных и теоретических исследований радиационных и столкновительных процессов с участием атомов и молекул теллура. Имеются также работы, посвященные источникам спектра атомарного теллура.
Razones divinas
1989
El presente artículo se propone analizar los rasgos formales principales (composición, montaje, mecanismos narrativos...) del film Castigo de Dios (Hipólito Negre, 1924), poniéndolo en relación con el cine español y clásico en el curso de los años veinte.
Patología Traumática Asociada poco Frecuente: Avulsión del L.C.P. y Fractura Ipsilateral de Diáf as is Femoral : (presentación de un caso)
1989
One case of femoral shaft fracture with acute posterior cruciate rupture is showed by the authors. There are differents papers than point out this association and the late diagnosis of the ligament injury.
Ultrastructure of the conus arteriosus ofScyliorhinus stellaris
1989
The functional morphology of the fourth chamber of the fish heart, the bulbus arteriosus, differs in teleosts and elasmobranchs. In elasmobranchs, this chamber is referred to as the conus arteriosus because its wall is made up of myocardial tissue in addition to elastic tissue. As a result of this feature, the function of the conus is very specialized. We report the basic ultrastructure of the wall of the conus arteriosus in the elasmobranch Scyllium stellare. The wall consists of three layers: the outer epicardial, the middle myocardial, and the inner endocardial layer. The outer layer is composed of the visceral pericardium consisting of cuboidal mesothelial cells, beneath which numerous …
Vergleich von Beckenangiographie, gepulster Dopplersonographie und penobrachialem Index in der Abklärung der erektilen Impotenz
1989
Die Beckenangiographie galt bisher in der Abklarung der erektilen Dysfunktion zur Beurteilung der Penisgefase als Methode der Wahl [3]. Als Scree-ning-Untersuchung wird der penobrachiale Index (PBI) als nicht invasives diagnostisches Verfahren durchgefuhrt.
Análisis sociológico de los censalistas de la "Ciutat" de Valencia (1600-1625)
1989
LA CIUDAD DE VALENCIA TENIA EN LOS CENSALES SU PRINCIPAL FUENTE DE FINANCIACION, DADA SU TRADICIONAL FALTA DE RECURSOS PROPIOS Y EL ESTUDIO DEL PANORAMA SOCIAL Y ECONOMICO DE LA CIUDAD A TRAVES DE LA AMORTIZACION DE LA DEUDA, MUESTRA SU CARACTER RENTISTA Y OLIGARQUICO. LOS CENSALES VALENCIANOS NO ERAN LA MODESTA RENTA DE LA PEQUEÑA BURGUESIA, SINO UN NEGOCIO MAS DE LA OLIGARQUIA URBANA DOMINANTE, RENTISTA Y ENDOGAMICA, QUE SE FUE CONSOLIDANDO POR ENCIMA DE CUALQUIER OTRO GRUPO SOCIAL, AL CONTROLAR EL GOBIERNO DE LA CIUDAD EL ABASTECIMIENTO Y LA POSESION DE CENSALES, EN GRAN PARTE A TRAVES DE LA MUJER Y EL REGIMEN FORAL.
J.Habermas: pragmática universal y normatividad
1989
Este trabajo defiende las siguientes tesis: la pragmática de Habermas no puede dotarnos de una base normativa para la teoría crítica. Pues ningún sistema de reglas puede determinar la racionalidad o irracionalidad de situaciones particulares de habla. Esta prioridad del juicio respecto de las reglas no excluye la posibilidad de una filosofía transcendental ni conlleva el rechazo de la idea de una reflexión crítica.
Le logement populaire au 18e siècle : l'exemple de Chartres
1989
International audience
CT and MR Imaging of Lesions of Skull Base and Cranial Vault
1989
The importance of CT in examinations of the skull base, including its role in the planning of operative or radiation therapy, has long been recognized (Liliequist and Forsell 1976; Bradac et al. 1977 a, b; 1978 a, b; Hammerschlag et al. 1977; Caille et al. 1977; Lohkamp et al. 1977; Huk and Schiefer 1978; Becker et al. 1978; Weinstein et al. 1978). In the present chapter we shall review the capabilities and limitations of this modality in the diagnosis of diseases involving the bony skull base and cranial vault. A more detailed discussion of specific tumor types may be found under the appropriate headings elsewhere in the book.
Purification of yeast killer toxin KT28 by receptor-mediated affinity chromatography
1989
La valutazione degli ospedali generali di 1° livello: il caso dell'ospedale " G Giglio di Cefalù"
1989
Los conceptos del equilibrio redox en los textos de BUP y COU
1989
CT and MR Imaging of Brain Tumors
1989
Our clinical population numbered 8516 patients with primary and metastatic brain tumors who underwent evaluation by computed tomography at the neurosurgical and neuroradiologic departments of the Berlin, Mainz, and Munich centers from 1975 to 1986 and at the Neurosurgical Department of Augsburg Central Hospital from 1983 to 1986. Table 5 lists all the tumors having an incidence greater than 1% in the total population; 98% of the lesions were confirmed histologically (open surgery, stereotactic biopsy, autopsy). “Rare” intracranial tumors having an incidence no greater than 1% are listed in Table 6. The frequencies of the individual tumor types correlate well with the statistical data report…
FIRST EVIDENCE FOR DIRECT CP VIOLATION
1989
INVESTIGATIONS OF STRAIN AND STRESS STATE AND CAPACITY IN SHORT CYLINDRICAL SHELLS UNDER INTERNAL PRESSURE
1989
In the paper it has been assumed that a triaxial stress and strain state occurs in a shell. The finite element method was used and owing to that digitization of the problem was possible. Such digitization was necessary for a numerical analysis of the moment stress state in the shell. On the ground of physical relations of the Prandtl-Reuss plastic flow theory an algorithm was formulated. The algorithm was a basis of calculating strains and stresses and determining capacity in a short cylindrical shell with rigid bottoms. The shell was subject to internal pressure. Experiments were carried out, as well. The results obtained with: equations of the membraneous shell theory, using plastic flow …
Why Cortices ? Neural Computation in the Vertebrate Visual System
1989
We propose three high level structural principles of neural networks in the vertebrate visual cortex and discuss some of their computational implications for early vision: a) Lamination, average axonal and dendritic domains, and intrinsic feedback determine the spatio-temporal interactions in cortical processing. Possible applications of the resulting filters include continuous motion perception and the direct measurement of high-level parameters of image flow, b) Retinotopic mapping is an emergent property of massively parallel connections. With a local intrinsic operation in the target area, mapping combines to a space-variant image processing system as would be useful in the analysis of …
Wissenschaftliche Filme und Video I
1989
Die kontinenzerhaltende Proktokolektomie mit ileoanalem Pouch stellt zur Zeit bei der Kolitis ulcerosa unter bestimmten Indikationen und bei der familiaren Adenomatosis die Operationsmethode der Wahl dar. Bei der Kolitis ulcerosa erfolgt eine Kolektomie mit transanaler Mukosektomie. Als Dunndarmreservoir wird von uns der J-Pouch bevorzugt, der mit der Analhaut anastomosiert wird. Bei der familiaren Adenomatose wird eine subtotale Kolektomie durchgefuhrt, wobei ein ca. 2 cm langer Muskel-Schleimhautschlauch fur eine transanale zirkulare Klammernahtanastomose mit dem vorgeschalteten J-Pouch erhalten bleibt.
A HEURISTIC APPROACH TO PART BATCHING IN FMS
1989
ABSTRACT A computationally efficient heuristic procedure is presented in order to solve the Part Batching Problem in FMS installations. The procedure is able to deal with the limited availability of tool slots in the storage devices of the machining centers and to evaluate how their capacity affects the overall system performances. A large dimension application is reported and the solution of the problem is tested using a simulator properly worked out.
Kinetics of Ordered Phases in Finite Spin Systems
1989
We study the growth of the ordered phase in a spin system of finite size suddenly brought below the transition temperature. Such a growth is driven by the instability of the mode corresponding to the largest eigenvalue of the interaction matrix. The relaxation occurs through different regimes according to whether the unstable mode has a negligible or macroscopic amplitude. One regime is characterised by dynamical scaling properties whereas in the other we can distinguish the growth to a macroscopic amplitude followed by rare transitions from one equilibrium amplitude to another. The analysis is carried out in the framework of a dynamical generalisation of the spherical model assuming non-ra…
Traitement informatique du signal electrique provenant de colorimetre a flux continu
1989
National audience
Muskelfehlbildungen, Aplasien und Anlagevarianten
1989
Totales oder partielles Fehlen eines funktionell wichtigen Muskels. Vorkommen einseitig oder doppelseitig. Kombination mit Entwicklungsstorungen von Integument und Skelett (obere Extremitat) und/oder von inneren Organen (z. B. beim Bauchmuskeldefekt).
Prognostic Parameters in Renal Cell Carcinoma - a New Approach(1)
1989
The prognostic potential of the parameters TNM staging, Robson staging, grading, cell type, growth pattern, and patient age was investigated for 431 patients with operated renal cell carcinoma (RCC). In the individual analyses, staging and grading attained the best results, whereby Robson staging proved to be superior to TNM staging by comparison. Morphological parameters had a more modest effect on the prognosis, but this should not be underestimated. A scale of points based on a comparative biometric evaluation of the various parameters was devised. From this scale, three significantly distinct prognostic groups evolved with a correct prognosis of over 80% on the average for an individual…
Rotura degenerativa de Tendón de Aquiles. : Reparación quirúrgica mediante técnica de Teuffer
1989
Los autores presentan 14 casos de rotura degenerativa de Tendón de Aquiles reparados quirúrgicamente mediante técnica de TEUFFER con tendón de peroneo lateral corto. Descripción de la técnica haciendo resaltar los buenos resultados obtenidos con una rehabilitación precoz.
Consideraciones sobre el estatuto jurídico de Valentia
1989
Campaign issues in political strategies and press coverage: The rental law conflict in the 1982–1983 election campaign in the federal republic of Ger…
1989
Abstract Election campaigns are institutionalized conflicts which are carried out in and through the mass media. Success and defeat in these conflicts depend upon the communication strategies of the parties and on the reactions of the journalists. In the election campaign of 1982–1983, the campaign manager of the Christian Democrats succeeded in altering the conflict over the new rental law into a conflict over the credibility of the SPD‐opposition. Thus, he created a counterpart to the criticism directed against the federal government. The newspapers and weekly news magazines did not take sides in the conflict through explicit evaluations, but rather by emphasizing or neglecting issues in …
YOLK SAC DEL TESTICOLO: Raro Caso con Metastasi Gigante Retroperitoneale
1989
The authors restorate a case of primary testis tumor (Yolk Sac Tumor) and giant retroperitoneal metastasis clinically evident as a voluminous abdominal mass (23 cm) and associated virilizing syndrome. the diagnostic and therapeutic procedure performed is described.
El Argumento del intervalo temporal, crítica a un nuevo planteamiento
1989
The time-gap argument is one of the classic arguments to introduce sense-data. It is based on the fact that we can perceive very distant objets, such as stars, which may have disappeared when we perceive them. Those in favour of the time-gap argument conclude from this that, in such cases, the objet of our perception can not be the extinct star, but sorne entity of a different kind: a sense-datum. They go on to argue that, as there is no relevant difference between such perception and the pereeption of nearby objets, we always perceive sense-data. The usual reply tothis argument is to mantain that there is no contradiction implied in the idea of seeing now that happened in the past. Moltke …
L'emfiteusi al Regne de València. Una anàlisi jurídica
1989
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Évaluation et efficacité des systèmes
1989
Tau-odd correlation on the Z0-Peak
1989
T-odd observables can be due either to T-violation or to unitarity corrections. We find a non-vanishing expectation value of a T-odd operator for from one-loop electroweak corrections to the resonant decay and from interference with the background. For unpolarized beams, chirality conservation allows only one relevant absorptive part of the interference between different amplitudes. We identify this unique T-odd effect as the spin correlation , where are the transverse (within the production plane) and normal (to the plane) spin components for f and , respectively. In the standard theory it is generated from the Z, W exchanges in the final vertex, from the Z-γ self-energy and from the tree-…
Análisis experimental de los conceptos sobre energía en alumnos del ciclo superior de E.G.B.
1989
Colorimetric determination of arylamines and sulphonamides by diazotization and coupling in a micellar solution
1989
Abstract The use of a micellar solution as a means for improving the colorimetric determination of arylamines by diazotization and coupling is studied. Sodium dodecylsulphate (SDS), Triton X-100 (TX-100) and N -cetylpyridinium chloride (NCPC), together with the diazotizable substances aniline and sulphanilic acid and the coupling agents 1-naphthylamine and N -(1-naphthyl)ethylenediamine are used as model compounds. The protonation constants of the dyes follow the order SDS>H 2 O>TX-100>NCPC. In an SDS micellar solution the coupling rate increases greatly, allowing the rapid formation of the protonated dyes in an acetate buffer. Other advantages are the possibility of analysing very non-pola…
CT and MR Imaging of Orbital Lesions
1989
In the past, the diagnosis of orbital lesions manifested clinically by unilateral or bilateral proptosis and/or impaired ocular motility has relied on conventional skull films and orbital radiographs, sonography, fluorescein angiography, internal and external carotid angiography, and ophthalmic venography. The introduction of CT, however, has greatly reduced the importance of invasive diagnostic procedures (Wende et al. 1977).
Embedding of Sobolev Spaces into Lipschitz Spaces
1989
The main result of the paper is that if Ω is a bounded uniform domain in ℝn and p>n, then the Sobolev space Wl, p(Ω) embeds continously into Cα(Ω), α = 1 - n/p.
On the use of asymptotic expansion in computing the null distribution of page's L-statistic
1989
Suppose that each out of n randomized complete blocks is obtained by observing a jointly continuous random variable taking values in Rk. Page's L-statistic is given then as a sum of i.i.d. lattice variables with finite moments of any order. Applying a well-known theorem on asymptotic expansions for the distribution function of such a sum yields higher order approximations to the significance probability of any observed value of L. The formula obtained by discarding terms smaller than o(n –1) is still very simple to use. Yet, due to it's strong analytical basis, it can be expected to provide substantial improvement on the traditional normal approximation. The results of extensive numerical i…
Pineal 'synaptic' ribbons in sympathectomized rats.
1989
The melatonin metabolism in the mammalian pineal gland is under the clear influence of sympathetic fibers originating in the superior cervical ganglia (SCG). Previous studies suggested that also pineal ‘synaptic’ ribbons (SR) are regulated by the gland’s sympathetic innervation. To gain more insight into the mechanisms involved SR numbers were determined in adult rats which were chemically sympathectomized as newborns by injection of 6-hydroxydopamine (6-OHDA). In control animals (saline injections), a clear day/night difference in the number of SR is present. In sympathectomized animals SR are higher in number throughout the 24-hour cycle but are not significantly elevated at night. The pr…