showing 36 of ~574560 from 574555 documents
Monthly reference distribution of daily relative sunshine values
1983
Abstract In this paper it is shown that for a given location the monthly distributions of the daily relative sunshine depend only, within statistical errors, on their monthly averages and are independent of the month of the year. Furthermore it is put in evidence that a reference distribution of the daily relative sunshine values for every month of the year can be found by the knowledge of the average deduced from data of some years.
Relativistic wave equations from supergroup quantization
1983
A formalism of geometric quantization recently introduced which is based on the consideration of Lie groups which are central extensions by U(1) is applied to the relativistic case by using the N-2 super Poincare group with a central charge.
CP properties of the leptonic sector for majorana neutrinos
1983
Abstract The leptonic sector of the electroweak theory is analyzed for massive Majorana neutrinos. For n generations, the Majorana mass lagrangian is diagonalized using the polar reduction to guarantee physical positive masses independently of the CP properties or the choice of the phases of the fields. When CP invariance holds, the CP eigenvalues of the definite mass neutrino fields are determined without commitment to a particular phase choice. For charged current interactions, we find that the observable CP violating phases can be parametrized a la Kobayashi-Maskawa for the vertec. Extra ( n − 1) relative phases of the massive neutrino fields are significant. The extra phases are observa…
Effect of organic matter added to soil on the adsorption of herbicides. Influence of the composition of the organic matter
1983
Crisis señorial y transformación agraria en la España de principios del siglo XIX
1983
A lo largo del siglo XIX la sociedad española experimentó cambios de gran intensidad que modificaron su estructura social y económica. No fue sólo un cambio institucional en sentido liberal. Tras esta transformación política hubo también un proceso más profundo y contradictorio de modificación sustancial de la 'sociedad civil'. Este trabajo se centra en el estudio de esos cambios sociales y las tensiones resultantes tal y como se manifestaron en España a principios del siglo XIX.
Effects of the modulation of epoxide hydrolase activity on the binding of benzo[a]pyrene metabolites to DNA in the intact nuclei.
1983
Study of Even Gd Nuclei by Decay of Oriented Tb, With Analysis by Simple Boson Models
1983
We have studied low-spin states of 150,152,154,156Gd by nuclear orientation of β-decaying Tb in a Gd host. Especially by means of multipole mixing ratios, including E0/E2, we have checked and revised spin-parities and assignments to (quasi) rotational ground, β and γ bands. For 150Gd we propose the new interpretation 1207.2 keV (0β+), 1518.5 keV (2β+), 1700.1 keV (4β+), 1430.5 keV (2γ+), 1988.0 keV (3γ+), 2080.0 keV (4γ+). For 152,154,156Gd we find agreement with recent literature. Our comparison with theory includes available data on 158,160Gd and on states up to 10g+, 10β+, 7γ+. We review our previously proposed "projection model", which is basically of the Bohr-Mottelson geometrical type…
A Nonlinear Circulatory Model for Artificial Heart Studies
1983
Animals with total artificial heart replacement (TAH) have survived for up to 9 months with manually controlled driving systems. A certain physiological control is provided by the animals intact peripheral regulation resulting in pathological venous hemodynamics, expressing the needs for a technical automatic control system, replacing the natural sympathetic stimulation and Starlings Law of the heart. A nonlinear dynamic mathematical model of the human cardiovascular system (CVSM) containing the systemic and pulmonary components was outlined and verified, which is employable to analyse the hemodynamic behaviour under normal and abnormal states. By modifying this model, assuming that cardiac…
Transition from Prolate to Oblate to Triaxial Shapes in158Yb
1983
The decay of the entry states in ISIYb populated in the reactions of 149 MeV ,oNe with ,44Nd and lUNd has been investigated with a 4" multidetector system gated by a Ge counter. The average excitation energy, the ,.-ray spectra and the angular distribu tions as a function of multiplicity show several changes in the ,.-ray decay. These changes suggest a transition from prolate to particle aligned oblate connguration at low spin. At 1- 38-48 collective transitions with dipole and quad rupole component possibly built on high K single particle states are observed. Furthennore, above 1- 48 the dipole component disappears suggesting a further change toward more triaxial shape.
Palliative Chemotherapie des metastasierenden Harnblasenkarzinoms
1983
Von den an der Urologischen Universitatsklinik Bern vom Januar 1979 bis Dezember 1981 behandelten Patienten mit einem metastasierenden Harnblasenkarzinom wurden insgesamt 24 Patienten des Stadiums T3-4GII-IIIN+M0-1 ausgewertet.
Control of the production of oxygen intermediates of human polymorphonuclear leukocytes and monocytes by beta-adrenergic receptors.
1983
The control by beta-adrenergic receptors of the production of oxygen radicals by zymosan-stimulated human polymorphonuclear leukocytes (PMN) and monocytes (M phi) was studied in vitro by means of chemiluminescence. In addition we asked whether PMN and M phi exhibit differential sensitivity to beta-adrenergic stimulation. For beta-adrenergic stimulation we applied fenoterol ranging from 10(-5) to 10(-9) M x 2.7. We found a dose-dependent suppression of the production of oxygen radicals, the ID50 being approximately 10(-6) M both for PMN and M phi. By assessment of lactic dehydrogenase release a cytotoxic effect of the drug could be ruled out. When incubated together with the beta-adrenergic …
Un nuevo sello hispanohebreo
1983
Intracardiac Cardioversion for Ablation of the Atrioventricular Conduction System in Patients with Drug Resistant Atrial Flutter
1983
The technique of intracardiac cardioversion for the ablation of the atrioventricular conduction system was used in three male patients (65, 53 and 57 years of age) with atrial flutter unresponsive to medical management. In the first patient a DC current of 80 J was applied while the other patients required 300 and 400 J respectively. In the first patient a transient third degree AVblock was induced enabling the ventricular rate to be easily controlled with drugs. This patient died 5 months later of resistant congestive heart failure. Autopsy revealed no gross evidence of myocardial damage in the tricuspid valve area or in the interventricular septum. In the other two patients a permanent th…
The electrofunctional investigations in the diagnosis of orbital diseases
1983
The importance of electrofunctional examinations (electroretinography, electro-oculography and visual evoked potentials) in orbital diseases is emphasized. Although such tests cannot give the same support to the clinical diagnosis as ultrasonography or CT scanning, they do give information about the functional state of the various orbital components. Visual evoked potentials can monitor the functionality of the optic nerve during and after trauma or compressive orbital diseases; electroretinography shows retinal changes secondary to traumatic or vascular orbital diseases, while electro-oculography allows to record extraocular muscle dysfunction.
Partialsynthese neuer Ergolinderivate aus Clavinalkaloiden, 2. Mitt.1) O-Acyl-8-hydroxymethyl-6-methylergol-8-ene und -ergol-9-ene
1983
Die Titelverbindungen sind durch Acylierung von Elymoclavin (1) bzw. Lysergol (2) mit Saurechloriden, im Fall der Ester von 2 auch durch Isomerisierung von O-Acyl-1 mit aktiviertem Al2O3 darstellbar. Umgekehrt fuhrt die Acylierung von 2 in bestimmten Fallen spontan zur Bildung eines Gemisches der O-Acylderivate von 1 und 2.. Partial Synthesis of New Ergoline Derivatives from Clavine Alkaloids, II: O-Acyl-8-(hydroxymethyl)-6-methylergol-8-enes and -ergol9-enes The title compounds can be prepared by acylation of elymoclavine (1) and lysergole (2), respectively, with acid chlorides or, in the case of the esters of 2, by isomerization of O-acyl-1 with activated Al2,O3. On the other hand, in cer…
Mößbauerspektroskopische Phasenanalyse eisenhaltiger Oberflächenschichten
1983
En busca de la identidad perdida
1983
Un estudio de aplicación de las técnicas informáticas a la investigación histórica. El comercio mediterráneo franco-español a fines del siglo XVIII
1983
Durante el siglo XVIII buena parte de la vida económica, cultural y de las comunicaciones de los pueblos de la vertiente mediterránea, tienen en el mar su vehículo más importante. Las ciudades portuarias se convierten en los centros de tráfico de personas y mercancías; con ellas, las ideas y los nuevos conocimientos industriales. Todo da lugar a un tráfico efervescente que, por sí sólo, justifica el interés de su estudio. Aunque abundan los trabajos que abordan o uno solo de los tráficos o relaciones generales sin clasificar, los modernos métodos cibernéticos permiten establecer relaciones entre los diferentes datos disponibles que dan lugar, más fácilmente, a una visión más amplia y comple…
Fotointerpretación de la Ribera del Xúquer después de la inundación de octubre de 1982
1983
EINE NEUE JAPANISCHE SYNAEMA-ART (ARANEAE: THOMISIDAE)
1983
A new species of the spider genus Synaema SIMON, 1864, from Japan is described under the name of Synaema chikunii. This spider was found in the mountainous regions of Honshu and Hokkaido.
La guerra del libro no tendrá lugar. Datos para un análisis
1983
Este archivo incluye, además del texto firmado José Vidal-Beneyto, un tríptico sobre la obra en cuestión: Lázaro Carreter, Fernando (coord.) (1983). La Cultura del Libro. Salamanca: Fundación Germán Sánchez Ruipérez.
Intentos en la articulación del mercado comarcal: el camino vecinal de Alberic a Alzira, 1853 - 1858
1983
Las crecidas medievales del río Júcar según el registrom geo-arqueológico de Alzira
1983
Profesors Voldemārs Fricbergs: personālais bibliogrāfiskais rādītājs
1983
Saturs: Priekšvārds. Fizikas un matemātika zinātņu doktors profesors Voldemārs Fricbergs /Andris Šternbergs /. Profesora V. Fricberga publicētie darbi. (1948.-1983.) Profesora V. Fricberga rediģētie darbi. V. Fricbergam izsniegtās (publicētas) autorapliecības. Profesora V. Fricberga vadītās disertācijas. Raksti par profesoru V. Fricbergu. Profesora V. Fricberga publicēto darbu alfabētiskais rādītājs. Personu rādītājs.
La afasia y la polarización ideológica en torno al sistema nervioso central en la primera mitad del siglo XIX
1983
281 pp. - Contiene gráficas
Endurance training reduces the susceptibility of mouse skeletal muscle to lipid peroxidation in vitro
1983
Selected estimates of the lipid peroxidative capacity were assayed in the red and white skeletal muscles of control and endurance-trained mice. Endurance training decreased the lipid peroxidation rate in vitro in both muscle types. The concentration of lipids susceptible to Fe2+-induced lipid peroxidation was greater in the red than in the white skeletal muscle and increased after endurance training in the red muscle. Endurance training, however, decreased highly significantly the sensitivity of red muscle to in vitro stimulated lipid peroxidation. The activity of catalase and the concentration of vitamin E were considerably higher in the red muscle, whereas the activity of glutathione pero…
Virolaisesta kirjallisuudesta : linjoja, arviointeja, kirjailijakuvia
1983
La gelifracción experimental en las calizas marmóreas de Xert y Borriol
1983
Las construcciones del siglo XVII: Pedagogía y ortodoxia (Contribución a la Historia del Studi General de Valencia)
1983
Взаимодействие свободного и связанного в атоме электрона с сильным полем излучения
1983
The Flux Density of Radiation Energy Originating from the Circumsolar Sky Measured at Groundbased Stations
1983
The aim of this project was the measurement of the radiant energy flux provided by the diffuse radiation of the ring shaped area of the sky around the unmasked sun disk. More than 200 measurements of the irradiance of this circumsolar cloudy or cloudfree sky up to an angular radius of 10° had been taken at Mainz (FRG), Deuselbach (FRG) and Adrano (Sicily). The measurements show that the irradiance of the circumsolar sky radiation may reach an amount of more then 30 % of the direct solar irradiance at the observation site. This means, optical systems combining the direct solar radiation and the circumsolar radiation may compensate — at least partly — the extinction losses of the direct solar…