showing 36 of ~574560 from 574555 documents
La escritura en la diócesis de Segorbe : una aproximación al estudio del alfabetismo y la cultura escrita en el Alto Palancia : 1383-1458
1984
Palamàs e Drosinis "compagni di viaggio"
1984
Analisi di due componimenti dei poeti K. Palamàs e G. Drosinis
Las terrazas de la Rambla de Cervera
1984
En este artículo se hace un estudio de las terrazas de una rambla típicamente mediterránea, cuya cuenca de drenaje está muy condicionada por la estructura. La morfología y los análisis sedimentológicos de los cortes estudiados han servido para detectar los diferentes niveles de terrazas y a partir de ellos se ha elaborado una hipótesis sobre las diversas secuencias acumulación- incisión que han tenido lugar en el Cuaternario en esta área.
Behandlung des fortgeschrittenen Prostatakarzinoms mit dem Gonadotropin-Releasing-Hormon-Analog Buserelin: klinische Ergebnisse
1984
Wie aus der vorangegangenen Veroffentlichung (Wenderoth u. Jacobi 1984) hervorgeht, ist das Gonadotropin-Releasing-Hormon-Analog Buserelin sowohl in subkutaner, als auch in pernasaler Applikation in der Lage, uber eine Down-Regulation der hypophysaren Freisetzung des luteinisierenden Hormons eine Suppression des Serumtestosterons auf Kastrationswerte zu bewirken. Dieser fur die Therapie des Prostatakarzinoms signifikante biologische Effekt tritt, wie Abb. 1 zeigt, mit einer mehr als 95%igen Wahrscheinlichkeit ab dem 28. Behandlungstag auf. Vergleichbare endokrinologische Daten wurden von der Arbeitsgruppe um Nagel (Borgmann et al. 1972) berichtet.
Fredholm operator families ?II
1984
First, we give a characterization of semi-Fredholm operators (i.e. those which are left or right invertible modulo compact operators) on Hausdorff tvs which generalizes the usual one in the context of Banach spaces. Then we consider a class of semi-Fredholm operator families on tvs which include both the "classical" semi-Fredholm operator valued functions on Banach spaces (continuous in the norm sense), and families of the form T + Kn, where Kn is a collectively compact sequence which converges strongly to O. For these families we prove a general stability theorem.
Oxygen Consumption and Oxygen Diffusion Properties of Multicellular Spheroids from two Different Cell Lines
1984
Multicellular spheroids are an in vitro tissue model in which the cells are supplied by diffusion of oxygen and substrates from the environmental growth medium (Sutherland et al., 1971). Since these substances are consumed when diffusing to the spheroid center, their concentration should decrease continuously towards the inner parts of the spheroids. Therefore, the location of the cells within the spheroid is an important determinant of the efficiency of the O2 and nutrient supply. The restriction of the O2 availability in the inner part of the spheroids may influence the metabolic and cell cycle state, and may even cause cell death, indicated by central necrosis in larger spheroids. Also, …
Profesore Marta Rudzīte: personālais bibliogrāfiskais rādītājs
1984
Personālajā bibliogrāfiskajā rādītājā ar atlasi ietverti filoloģijas doktores, valodnieces, profesores M. Rudzītes darbi un literatūra par viņas dzīvi, zinātnisko, pedagoģisko un sabiedrisko darbību.
Perkutane Anatomie der Niere
1984
Exakte Kenntnisse der topographischen Anatomie der Niere und der intrarenalen Anatomie sind Voraussetzungen fur eine komplikationsarme und erfolgreiche Punktion des Nierenhohlsystems.
Orígenes de la Generalidad Valenciana
1984
Robert Mayer-Literatur aus Heilbronn
1984
The reactivity of 2-vinylindoles with dimethyl acetylenedicarboxylate
1984
Abstract The overall rates of reaction of 1-substltuted-1- (1-methyl-2-indolyl)ethenes with dimethyl acetylenedicarboxylate are considerably lower than those of the corresponding 2-vinyl- pyrroles. Steric interaction between the N-methyl group on the indole ring and the 1-substituent on the ethenyl group prevents the diene system adopting a coplanar cisoid configuration and, thereby, inhibits the π4 + π2 cycloaddition reaction of the system with dimethyl acetylenedicarboxylate. Under such conditions, the indolylethene preferentially undergoes a Michael addition reaction at the 3-position. The π4 + π2 cycloaddition reaction is promoted at elevated temperatures. No evidence was found for a Co…
Les limites de la pluriactivité des familles agricoles dans une région de grande culture. L'exemple de la Beauce au XIXème siècle
1984
Gas chromatographic-mass spectrometric analysis of chlorinated phenoxyphenols in the technical chlorophenol formulation ky-5′
1984
Abstract The content of polychlorinated phenoxyphenol (PCPP) impurities in the technical chlorophenol formulation Ky-5 (wood preservative) was studied. The phenolic fraction was shown to contain predioxins and isopredioxins, the structures of the components being verified by gas chromatography mass spectrometry of non-derivatized, methylated and acetylated fractions. 2,6-Dichloro-4-(2,4,6-trichlorophenoxy)phenol and 2,6-dichloro-4-(2,3,4,6-tetrachlorophenoxy)phenol were identified by the comparison of their retention times and the mass spectra of their methyl and acetyl derivatives with those of authentic specimens. The amounts of the above components in Ky-5 were ca. 0.8 and 0.2%, respecti…
Recalage d'un modèle éléments finis en utilisant des données expérimentales. Concept de localisation
1984
National audience
Impact of Various Thermal Doses on the Oxygenation and Blood Flow in Malignant Tumors Upon Localized Hyperthermia
1984
Hyperthermia exhibits various direct cytocidal effects (Dickson, 1977; Overgaard, 1977; Suit, 1977). During heat treatment in vivo, several indirect mechanisms enhance the direct cell-killing capacity of hyperthermia. Therefore, the effective use of hyperthermia can overcome some of the well-known problems involved in modern radiation therapy at least in some malignant tumors.
FATIGUE FAILURE CRITERIA FOR MATERIALS UNDER RANDOM TRIAXIAL STATE OF STRESS
1984
SUMMARY Five fatigue failure criteria are formulated for a random triaxial state of stress whose components have zero mean values. It is assumed that fatigue failure is determined by the stress and strain components that act on an expected fracture plane. It is shown that in some special cases the proposed failure theories reduce to classical theories applied for sinusoidal stresses.
Role of solvent and base in the silanization reaction of silicas for reversed-phase high-performance liquid chromatography
1984
Reversed-phase packings were synthesized by reaction of n-alkyldimethylchloro- and trifluoroacetoxysilanes with silicas of 15 and 25 nm pore size, employing tetrahydrofuran, N,N-dimethylformamide, benzene, diethyl ether, dichloromethane and acetonitrile as solvents and triethylamine, pyridine, triazole, quinuclidine, 2,4- and 2,6-lutidine and imidazole as bases. With dichloromethane as solvent and 2,6- lutidine as base, n-alkyldimethyltrifluoroacetoxysilanes did not yield n-alkyl ligand densities higher than those obtained with n-alkyldimethylchlorosilanes under identical conditions. With a given base and given n-alkyldimethylchlorosilane the solvent type was found to exert a noticeable inf…
43. zinātniskās konferences programma un ielūgums (Rīga, 1984. gada 10.- 17. februāris)
1984
Profesore Valentīna Agamdžanova: personālais bibliogrāfiskais rādītājs
1984
Saturs: Priekšvārds. Filoloģijas zinātņu doktore profesore Valentīna Agamdžanova. Profesores Valentīnas Agamdžanovas publicētie darbi (1958.-1984.). Profesores V. Agamdžanovas rediģētie darbi. Raksti par profesori V. Agamdžanovu. Profesores V. Agamdžanovas publicēto darbu alfabētiskais rādītājs. Personu rādītājs.
La mirada indiscreta
1984
El presente artículo se propone analizar la posic ión enunciativa de Hitschcock en La ventana indiscreta (Rear Window, 1954) en relación con el modelo clásico de narración cinematográfico.
En torno al método Levallois
1984
Les déterminants de l'orientation scolaire en fin de 3ème
1984
Isolation and identification of volatile constituents of sunflowers (Helianthus annuus L.)
1984
International audience
Determinants of the demand for curative health in Mali
1984
Remigio Zena narratore
1984
La monografia ricostruisce l'iter narrativo dello Zena, dai primi entusiasmi per le proposte scapigliate e dal successivo momento verista fino agli ultimi approdi decadenti. E' individuata la genesi storica, culturale e psicologica delle scelte operate dallo scrittore. Una particolare attenzione è rivolta al rapporto che intercorre tra sostrato ideologico ed elaborazione di tecniche e strumenti espressivi. L'autrice evidenzia inoltre come la produzione letteraria zeniana sia emblematica di processi che si verificano nell'Italia postunitaria, specchio e verifica cioè del tentativo di una parte della cultura cattolica di uscire dal ghetto dell'integralismo e, pur nella riaffermazione dei prop…
Organismes de formation et alternance
1984
Jean-Jacques Paul, Die Ausbildungsstatten und der Ablauf der wiederholten Folgeausbildung : einige Beobachtungen nach dem ersten Jahr der in Kraft getretenen Massnahmen zur Qualifizierung der 16-18 jährigen (« Dispositif 16-18 »). Die mit der wiederholten Folgeausbildung gebundenen Einsätze sind vielfältig ; sie beziehen sich sowohl auf ihre pädagogischen Potentialitäten als auch auf das Risiko, die Einführung einer neuen von jungen Lehrgangbesuchern gebildeten Beschäftigtengruppe zu fördern. Diese Problematik wird hier durch die Analyse des ersten Ausbildungsjahres seit dem Inkrafttreten der Massnahmen zur Qualifizierung und beruflichen Eingliederung der Jugendlichen im Alter von 16-18 Jah…
Роль "Нового течения" в пропаганде марксистских идей в Латвии (1893-1897 гг.)
1984
Teología e impuestos. Reflexiones sobre De vectigalibus de Joan Blai Romero
1984
Hacienda pública y teología. De vectigalibus de Joan Blai Romero.
Fernando G.Tola o la experiencia de los límites
1984
Stereoselektive c-glycosidsynthese durch titan-(iv)-katalysierte addition von silylenolethern an 2-acyloxy-3-keto-glycale
1984
Abstract C-Glycosides are stereoselectively formed by the titan-(IV)-catalysed addition of silyl enolethers 2 to 2,4,6-tri-O-acyl-1-deoxy-D-erythro-hex-1-enopyran-3-uloses 1 followed by elimination of the 4-acyloxy substituent. Cyclohexenyl silylether 2a reacts with 2-acetoxy-3-keto-glycal derivative la forming only one product 3a . Thus, the reaction seems to be diastereospecific with respect to both new chiral centers of the product.
Cuticle: Formation, Moulting and Control
1984
The relative rigidity of the arthropod exoskeleton makes it impossible for body size to increase continuously during the postembryonic development of these animals. Once they have hatched from the egg, they grow in steps, passing through a variable number of (larval) stages (Fig. 1 a). Apart from a few exceptions, there are between 3 and 10 such stages in the arachnids, 3–20 in the crustaceans, and 3–10 in the insects. In many cases a metamorphosis stage intervenes (some crustaceans; holometabolous insects) (Fig. 9b, c).
Diuretic Therapy in Old Patients
1984
The administration of diuretics is indicated in several clinical conditions characterized by more or less severe water and salt retention (congestive heart failure, non-compensated liver cirrhosis, renal syndromes etc.), or in cases in which water and sodium depletion is supposed to improve some pathophysiological aspects of clinical symptoms (e. g. as background treatment in arterial hypertension, or as emergency treatment in left ventricular failure.
Nucleoside phosphotransferase in animal tissues
1984
A Local Selection Algorithm for Switching Function Minimization
1984
The minimization algorithms which do not require any preliminary generation of all the prime implicants (PI's) of a function are the most efficient. In this work a new algorithm is described which follows such an approach. It is based on a local selection of PI's carried out by examining a set of vertices whose number is never greater than the number of PI's of a minimum cost cover. This algorithm takes advantage of a technique which uses numerical equivalents of the function vertices as pointers. For this reason it is well suited for implementation by computer. To illustrate the features of this algorithm a few examples are reported.
Le mouvement ouvrier finlandais des origines à la guerre civile de 1918
1984
International audience