showing 36 of ~574560 from 574555 documents
Das Werden des Kosmos Von der Erfahrung der zeitlichen Dimension astronomischer Objekte im 18. Jahrhundert
1985
The Permanent ‘Becoming’ of the Cosmos: On Experiencing the Time Dimension of Astronomical Entities in the 18th Century. - This paper deals with two of the initial stages through which the dimension of time, in the sense of an irreversible development, found its way into astronomical-cosmological thinking. The one resulted from the first consequental application of Newtonian principles and laws to cosmic entities outside of our solar system found in the General Natural History or Theory of the Heavens of Immanuel Kant (1755): Endeavoring to explain through natural causes first the peculiarities of the solar system, no longer naturally explainable through the celestial mechanics of Isaac New…
Human Mammary Carcinomas in Nude Rats — A New Approach for Investigating Oxygen Transport and Substrate Utilization in Tumor Tissues
1985
An understanding of tumor pathophysiology with respect to blood flow, oxygenation status, pH distribution and utilization of the relevant substrates which, all together, critically influence growth kinetics and the efficiency of nonsurgical therapeutic modalities in vivo requires information derived directly from human malignant tissues. At present, only inadequate knowledge of the relevant physiological factors in tumor tissues of patients are accessible. The little data available to date were obtained from clinical observations rather than from systematic studies, i.e., data were collected from various tumor types with differing staging and grading. For this reason generally valid stateme…
Polymeric monolayers and liposomes as models for biomembranes
1985
Polymer chemists as poachers in foreign grounds? Why not? Macromolecular chemistry has become a mature science with all advantages and handicaps of a well-established scientific discipline: many heights are conquerred and the harvest is abundant, but adventures and the future might be elsewhere. Besides, in these times of bottomed out industrial profits in common plastics, future polymer chemistry cannot be limited to repetitive improvement of already successful mass polymers but should rather expand into neighboring fields of material science as well as life science where “polymer thinking” might help to overcome difficulties. — First hesitant steps on the bridge towards membrane biology h…
Kehlkopf und Schilddrüse
1985
Der Kehlkopf des Neugeborenen unterscheidet sich in Form, Grose, Lage und Gewebsbeschaffen-heit vom Kehlkopf des Erwachsenen. Der ausgewachsene Larynx ist mehr als zweimal so hoch, breit und tief wie der des Kleinkindes. Der weibliche Kehlkopf ist kleiner als derjenige des Mannes. Vom dritten Lebensjahr bis zur Zeit der Pubertat bleibt die Grose des Kehlkopfes nahezu konstant.
Degree problems II π - separable character degrees
1985
Multiple Vergleiche Mittels Rangtests - Alle Paarvergleiche -
1985
Das Hauptziel der vorliegenden Arbeit ist es, zu untersuchen, wie das Prinzip des Abschlustests auf die gebrauchlichen multiplen Rangverfahren angewendet werden kann. Literatur zu diesem Thema findet sich bis jetzt nur in Tagungsberichten, so bei Ferner (1981), wo die Anwendung der Holm’schen Prozedur auch bei Rangtests vorgeschlagen wird, sowie bei Ludin (1983) und Schulz (1983, 1984).
Estudio de los procesos de pensamiento del profesor en formación
1985
Analizar los procesos cognitivos que genera en el profesor en formación, una intervención formadora puntual. Se compone de 21 estudiantes de tercer curso pertenecientes a la Escuela de Formación de Profesores de EGB de Valencia, y de 76 estudiantes de quinto curso de Ciencias de la Educación de la Universitat de Valencia. Con este diseño cuasi-experimental se pretende analizar las siguientes dimensiones del pensamiento docente: retención de información, pensamiento ideológico, atribución causal, teorías implícitas y dilemas. Para ello, se utiliza un grupo de control que parte de sus propios conocimientos previos y de un grupo experimental al que se aplica un tratamiento. Tratamiento: cuader…
Blood Flow and Oxygen Supply to Human Mammary Carcinomas Transplanted into Nude Rats
1985
Tumor blood flow (TBF), by itself, greatly influences the efficiency of nonsurgical therapeutic modalities, especially chemotherapy and hyperthermia. Furthermore, TBF is one of the most important determinants of tumor tissue oxygenation in vivo, thus playing a relevant role in tumor growth kinetics and in the development of regressive changes. In addition, the oxygenation of tumor tissue strongly determines the efficiency of radiation therapy and to a certain extent, pharmacodynamics of some antiproliferative drugs. Despite the considerable information available for rodent tumor systems, there are only sporadic ireports on blood flow (Beaney et al., 1984, Johnson, 1976, Mantyla, 1979, Manty…
La “medicina de laboratori” a València en la transició dels segles XIX al XX : guia de l’exposició, septembre 1985
1985
Esta exposición fue montada con motivo del Curso Intensivo Europeo “El nacimiento de las ciencias médicas fundamentales (siglos XVI-XIX)”, organizado por el Consejo de Europa y con la colaboración de la Conselleria de Cultura, Educació i Ciència de la Generalitat Valenciana. Cátedra de Historia de la Medicina de la Universidad de Valencia, 23-27 de septiembre de 1985: La tradición anatómica valenciana. Cajal en Valencia. Paleontología y darwinismo: Joan Vilanova i Piera, y Peregrí Casanova. La microbiología y la vacunación anticolérica de Ferran. La nueva terapéutica de base experimental. El impacto de la "medicina de laboratorio" en el diagnóstico. La revolución quirúrgica: antisepsia, ane…
Sequentially Rejective Test Procedures for Detecting Outlying Cells in One- and Two-Sample Multinomial Experiments
1985
For multiple testing of multinomial models in the case of one or two samples we propose using test procedures based on the principle described by MARCUS, PERITZ and GABRIEL (1976). These methods are based in each step of the sequentially rejective strategy on tests which exhaust the full α level (i.e. which are not conservative). The tests can be performed in a finite or asymptotic version.
Types of Motion in the Oblate Planet Problem
1985
We consider a mass point in the gravitational field of an oblate planet and in a meridianal plane. The Hamiltonian of the problem is: $$ \frac{1}{2}\left( {p_r^2 + \frac{{p_{\theta }^2}}{{{r^2}}}} \right) - \frac{1}{r} - \frac{\varepsilon }{{{r^3}}}\left( {1 - 3{{\sin }^2}\theta } \right) $$ .
Theoretical elastoplastic buckling of stringer stiffened cylindrical shells
1985
Abstract A linear analysis method is offered to predict the theoretical elastoplastic buckling of stringer stiffened cylindrical shells subjected to longitudinal loading. Welding residual stresses are taken into account in the calculation, but effects of geometrical imperfections and pre-buckling displacements are ignored. The examples analysed show a good correlation between the analytical results and those obtained experimentally with stocky models of moderate geometrical imperfections.
Biliary adenocarcinoma
1985
Three human cell lines from adenocarcinomas of the extrahepatic biliary tract were established in permanent tissue culture. Mz-ChA-1 and Mz-ChA-2 were cultured from mechanically dissociated gallbladder adenocarcinoma metastases and SK-ChA-1 was grown from malignant ascites of a patient with primary adenocarcinoma of the extrahepatic biliary tree. Cell doubling times in tissue culture are 3-4 days for Mz-ChA-1 and approximately 2 days for Mz-ChA-2 and SK-ChA-1. All three tumour cell lines were successfully transplanted to nude mice, inducing progressive tumour growth. Histologically, nude mouse tumours resembled the original adenocarcinomas. In vitro formation of gland-like structures were r…
In tema di interpretazione delle norme penali tributarie
1985
Combined medical and mechanical recanalization in acute myocardial infarction
1985
A technique of combined medical and mechanical recanalization was employed in 96 patients with acute transmural myocardial infarction. The mean time between onset of symptoms and admission to hospital was 170 +/- 65 min (X +/- SD). After 10 +/- 16 min, 250,000 U streptokinase was administered intravenously for 20 min. Intracoronary thrombolysis was commenced within 38 +/- 14 min. First coronary angiograms demonstrated reperfusion, an open vessel in 25/96 patients (26%). In 15/71 patients (21%) reperfusion occurred during thrombolysis therapy, before mechanical recanalization could be performed. Recanalization was achieved mechanically in 37/71 patients (52%) with occluded coronary vessels. …
Some Decision Results on Nonrepetitive Words
1985
The paper addresses some generalizations of the Thue Problem such as: given a word u, does there exist an infinite nonrepetitive overlap free (or square free) word having u as a prefix? A solution to this as well as to related problems is given for the case of overlap free words on a binary alphabet.
Zusammenfassung der Diskussion zum Thema: „Klinik der Kombinationsanästhesie“
1985
On implicit data structures for priority queues
1985
Comparaison avec une structure liee simple et implementation de certaines structures de donnees implicites pour les files d'attente de priorite. Le minutage des experiences montre que les structures implicites sont plutot lentes
Polymeric Oriented Monolayers and Multilayers as Model Surfaces
1985
All living cells are surrounded by a lipid bilayer membrane in which a variety of proteins (e.g., enzymes) are embedded (fluid mosaic model; Figure 1). Phospholipids and cholesterol represent the major part of the lipids of a biomembrane. Figure 2 illustrates the structure of some typical amphiphilic membrane components with hydrophobic alkyl chains and hydrophilic head groups. The amount of protein in biological membranes varies between 40 and 60%(3); however, in highly specialized membranes values between 20% (myelin sheath of nerve axons; electrical isolator) and 75% (mitochondrial inner membrane; enzyme system of the respiratory chain) may occur. Furthermore, the incorporation of protei…
The molecular glass state in KBr1-x (CN)x
1985
Structural and dynamic properties of the molecular glass KBr1-x (CN)X are reported. The low temperature state can be characterized as an averaged crystal, where clusters of correlated frozen-in CN- ions yield a distribution of frozen-in lattice strains which destroy the rigorous center-of-mass periodicty of the high temperature phase. The freezing process measured via cusps in the dipolar and quadrupolar susceptibilities is a relaxional phenomenon and depends sensitively on the timescale of the experiment.
The rat liver foci bioassay: I. Age-dependence of induction by vinyl chloride of ATPase-deficient foci
1985
The age-dependence of the induction of pre-neoplastic enzyme-altered hepatic foci was investigated. Rats were exposed (8 h/day, 7 days/week) to 2000 p.p.m. vinyl chloride (VC) either 'transplacentally' (exposure of pregnant females), or immediately after birth for different time intervals (5, 11, 17, 47, 83 days) or from an age of 7 or 21 days onwards. The animals were then kept without further treatment; livers were evaluated for ATPase-deficient foci at the age of 4 months. 'Transplacental' exposure and exposure from day 1 through 5 caused no increase over controls in ATPase-deficient foci, probably due to the lack of hepatocellular proliferation and the low rate of VC metabolism at this …
“Etymologia Est Origo Vocabulorum…”
1985
SUMMARYThe study wants to contribute to the explication of Isidore of Sevilla's conception of etymology starting with the definition "Etymologia est origo vocabulorum, cum vis verbi vel nominis per interpretationem colligitur" (Etym. I, xxix, 1). At first sight the problem of interpretation results from the contradiction between the static character of the principal clause (est origo) and the dynamic character of the subordinate clause (colligitur). This contradiction is resolved in favour of the dynamic aspect by changing origo into originatio on the basis of a teleological and historical interpretation. In a second step, an attempt has been made to arrive at a comprehensive assessment of …
Un vaudois bigame à Baugé. Réflexions sur l'indulgence d'un procureur général
1985
International audience
Dielectric Relaxation Measurements and X-Ray Investigations of Liquid Crystalline Side-Chain Polymers
1985
In the last few years several liquid crystalline side-chain polymers have been synthesized,1 – 4 which combine the properties of low molecular weight liquid crystals with those of polymers.5 – 9
Sobre la vegetación del Orden Asplenietalia petrarchae en las montañas valencianas
1985
Se han estudiado las comunidades vegetales casmofíticas basífilas, presentes sobre los roquedos cálidos y secos, pertenecientes al orden Asplenietalia petrarchae Br.-Bl. & Mcier 1934, en el territorio de la Comunidad Valenciana y alrededores, detectándose en el mismo los siguientes sintáxones: Alianza Asplenion petrarchae Br.-Bl. & Meier 1934, con la asociación Melieo-Saturejetum fruticosae O. Bolós & Vives 1957. Alianza Teucrion buxifolii Rivas Goday 1955, con las asociaciones: Hippocrepido-Scabiosetum saxatilis (Rivas Goday 1953) O. Bolós 1957, Jasonio-Teucrietum thymifolii G. Mateo 1983, Rhamno borgiae-Teucrietum buxifolii nova y Lapiedro martinezii-Chelanthetum velleae nova. Chasmophyti…
SU(3) Analysis of $$p\overline p$$ Decays into Two Mesons
1985
The process \(p\overline p \to MM'\) is analyzed in terms of 8 SU(3) invariant amplitudes with definite charge conjugation properties. The amplitudes are constructed such that they either correspond to quark annihilation or rearrangement diagrams. For the C’-odd case the process \(p\overline p \to PS + PS\) is examined, whereas for the C’-even case the decay \(p\overline p \to PS + V\) is analyzed. It will be shown that for C’-odd both annihilation and rearrangement contribute, whereas rearrangement is dominant in the C’-even case.
- conformational preference of , -9-oxobicyclo[3.3.1]nonane-2,4-dicarboxylic acid
1985
Abstract The 1 H and 13 C nmr spectra of exo , exo -9-oxobicyclo[3.3.1]nonane-2,4-dicarboxylic acid, 3, in DMSO-d 6 or alkaline D 2 O, clearly show that it exists in a boat - chair -conformation with equatorial carboxyl groups, thus being the first case of boat - chair preference of a bicyclo[3.3.1] nonan-9-one due to the presence of exo , exo -2,4- substituents.
Alfonso X y el fuero de Alicante
1985
Estudio de los fueros y privilegios de Alicante concedidos por Alfonso X, editados por Juan Manuel del Estal, la extensión del derecho real castellano.
El contacte entre la Ribera del Xúquer i els raiguers de les Muntanyes de Carcaixent
1985
Cuando el río Xúquer llega a la Ribera, deja el encajamiento montañoso y forma un cono aluvial que ent ra en contacto con los piedemontes originados por los relieves emergidos en las cercanías de la llanura de inundación, apareciendo unas zonas deprimidas en el punto de contacto de las dos formaciones por los perfiles opuestos que presentan. Además, el contacto no es estable debido a la diferente velocidad de crecimiento en altura, y en consecuencia los depósitos fluviales conquistan poco a poco las tierras de piedemonte y por lo tanto, la zona deprimida se aleja cada vez más del río. En segundo lugar, los núcleos de población, que hace muchos años estaban al margen de las inundaciones por …
Els illustrats i la indústria a la regió d'Alcoi (Valls d'Alcoi i Vall d'Albaida)
1985
Representaciones humanas pintadas sobre la cerámica ibérica de El Monastil (Elda, Alicante): La ideología en la cerámica ibérica pintada
1985
La criminalité en Anjou au 18e siècle
1985
International audience
Partialsynthese neuer Ergolinderivate aus Clavinalkoloiden, 5. Mitt. N-1- und N-6-mono- und disubstituierte Festuclavine
1985
Festuclavin (1), 6-Cyano-6-nor-1 (3), 6-Nor-1 (5) und 6-Allyl-6-nor-1 (7) lassen sich in flussigem Ammoniak mit Kalium und dem entsprechenden Iodid in ihre 1-Allyl- und 1-Propyl-Derivate uberfuhren. Die Darstellung von 7 aus 5 wird beschrieben. Partial Syntheses of New Ergoline Derivatives from Clavine Alkaloids, V: Festuclavines Mono- and Disubstituted at N-1 and N-6 Festuclavine (1), 6-cyano-6-nor-1 (3), 6-nor-1 (5) and 6-allyl-6-nor-1 (7) were converted to their 1-allyl- and 1-propyl derivatives with potassium and the corresponding iodide in ammonia. The preparation of 7 from 5 is described.
Le syndrome du diplôme et le chômage des jeunes diplômés, le cas du Bénin
1985
référence interne : 85065