Évaluation analytique d'une action Zone d'Éducation Prioritaire au cours préparatoire

1983

Sequential formula translation

1983

The syntax of an algorithmic language such as ALGOL is conveniently described as a sequence of states indicated by an element called cellar. Transitions are controlled by admissible state- s ymbol pairs which may be represented by a transition matrix. This description of syntax furnishes at the same time an extremely simple rule for translating into machine programs statements in the algorithmic language. Sequential treatment, however, is not feasible in the case of certain optimizing processes such as recursive address calculation.

Covalent Protein Binding of Vinyl Chloride Metabolites During Co-Incubation of Freshly Isolated Hepatocytes and Hepatic Sinusoidal Cells of Rats

1983

Proteins of isolated rat hepatic sinusoidal cells incubated with 14C-vinyl chloride, rat liver microsomes and an NADPH-regenerating system were alkylated by vinyl chloride metabolites formed by microsomes. This suggests that reactive vinyl chloride metabolites can penetrate sinusoidal cells. Protein alkylation in isolated hepatic sinusoidal cells was higher when these were co-incubated with isolated hepatocytes, indicating that reactive vinyl chloride metabolites formed by hepatocytes are stable enough to diffuse out of hepatocytes into sinusoidal cells. Glutathione added to the incubation medium inhibited the covalent protein binding of vinyl chloride metabolites in sinusoidal cells as wel…

Autoconeixement

1983

Autoconeixement ABSTRAC L’objecte de l’article és abordar el problema epistemològic-ontològic respecte del “jo”, en particular, presentar i analitzar les dues formes dominants de concebre el referent del “jo”: cartesianisme i empirisme. En les primeres seccions es presenten les posicions, prestant especial atenció a les afirmacions de Descartes i de Russell. Seguidament, es presenta una objecció per rebatre una de les premisses en les quals es recolza la darrera. L'objecció elaborada contesta la tesi russelliana que el subjecte no pot conèixer-se a si mateix per familiaritat (“aquaintaince”) i, en conseqüència, pot percebre’s com a fet però no en tant que subjecte. L’autor argumenta que si …

Los efectos perversos de la información

1983

Una inscripció àrab apareguda a Benassal

1983

Fou trobada fa uns quinze anys en terres d'El Mas de Rupert de Baix, en desfer el marge d'un bancal per a obrir un portell. Es una placa d'arenisca ocre ataronjada.

Synthesis and Assembly of Wall Polymers on Regenerating Yeast Protoplasts

1983

Accumulation of chitin and glucan on S. cerevisiae and C. albicans protoplasts begins shortly after resuspension in the regeneration medium, and mannoprotein molecules also appear retained by the regenerating wall after 30–60 minutes in S. cerevisiae or after a longer lag period in C. albicans. Nevertheless, a considerable fraction of the synthesized mannoproteins, which in SDS-acrylamide gels exhibit a different pattern from that of wall mannoproteins of cells, are still released to the growth medium during at least eight hours. De novo synthesis of chitin synthase, but not of glucan synthase, is observed in S. cerevisiae from about 30 minutes after initiation of the regeneration process. …

Uniqueness and nonexistence of limit cycles for the Fitzhugh equation

1983

Synthese und H2-antihistaminische Wirksamkeit von 2-Amidino-1,2-dihydro-3H-pyrazol-3-onen

1983

Es wird uber die Synthese und H2-antihistaminische Wirksamkeit von 2-Amidino-1,2-dihydro-3H-pyrazol-3-onen berichtet. Synthesis and H2-Antihistaminic Activity of 2-Amidino-1,2-dihydro-3H-pyrazol-3-ones The synthesis and the H2-antihistaminic activity of 2-amidino-1,2-dihydro-3H-pyrazol-3-ones are reported.

The genus thiobacillus: Physiology and industrial applications

1983

This review deals with different aspects concerning the genus Thiobacillus as an obligat chemoautotroph able to oxidize reduced anorganic sulphur compounds. There are given the following topics: physiology of the genus (nutritional requirements, enzymatic complexes for sulphur oxidation, energy generation, reductive CO2 assimilation and growing in presence of organic compounds). The ecological significance of Thiobacilli in the sulphur cycle in Nature is presented. The industrial applications of Thiobacilli in respect to the leaching processes that allow the recovery of metals through oxidation and solubilization from low-grade ores are discussed, with special reference to copper and uraniu…

Conditions for the Enhancing Effect of Protease Inhibitors on the Concanavalin A Induced Thymidine Response of Murine Lymphocytes

1983

Incorporation of [<sup>3</sup>H]-thymidine – [<sup>3</sup>H]-TdR – into concanavalin A (Con A) stimulated murine splenocytes and thymocytes was found to be enhanced by addition of certain concentrations of phenyl-methyl-sulfonylfluoride (PMSF), di-isopropylfluorophosphate (DFP), N-α-tosyl-<i>L</i>-lysyl-<i>L</i>-chloromethylketone (TLCK), and soybean trypsin inhibitor (SBTI). No enhancement could be observed when mononuclear cells of the peripheral blood were used, and a medium enhancement when thymocytes were applied. Furthermore, no enhancing effect of the protease inhibitors (PI) on the Con A response of murine splenocytes could be observed…

Áreas Ecoculturales y espacios de comunicación : el espacio iberoamericano

1983

The use of utraviolet-visible spectrophotometry in the determination of average properties of nonylphenol ethylene oxide condensates

1983

Ultraviolet spectrophotometry is usd in the determination of average molecular weight (M), average degree of polymerization (X), the hydrophilic-lipophilic balance (HLB) and ethylene oxide percentage of nonylphenol ethylene oxide condensates. The method is based on determination of the absorptivity a, expressed in g lt-1 cm−1, from the absorbances measured at 275 nm for a series of dilutions of an aqeuous ethanolic solution (60:40, v/v/) of a given product, followed by numerical interpolation of this value in the expression a = f(HLB), log a = f(log M), and log a = f(log X). These expressions are obtained from reference samples or samples previously analyzed. The proposed method gives relat…

Razón de un disentimiento

1983

Se trata de una carta de José Vidal-Beneyto dirigida a Basilio Martín Patino, destinada a ser publicada en forma de carta al director, pero que finalmente no se publicó. Se adjunta en el mismo fichero un pequeño artículo sobre la vuelta de Martín Patino a la televisión: Portuondo, Javier (7 de agosto de 1985). Tras ocho años de inactividad, Martín Patino rueda para TV. La Vanguardia.

La paz comunicada

1983

Secuestro de los Medios de comunicación

1983

Organomercury(II) derivatives of 2-thiouracil. An infrared and proton magnetic resonance study of structures

1983

Abstract The novel complexes RHg(s2UraH−1) (R = Me, Ph) where s2UraH−1 is the monoanion of 2-thiouracil, have been synthesized. Comparison of the infrared spectra of the solid complexes and of 1H nuclear magnetic resonance spectra of the complexes in dimethyl-d6 sulfoxide with spectra of s2 Ura and Na[s2UraH−1] allows the recognition of the existence of isomers in the solid, with bonding to exocyclic sulfur and to pyrimidine nitrogens. In solution, a simpler pattern is observed, with 2J(1H199Hg) indicating bonding to sulfur only.

On electric and magnetic problems for vector fields in anisotropic nonhomogeneous media

1983

r= 3~2, initiated by Saranen [ 131. In the above, n is the outward-drawn unit normal to the boundary and A denotes the exterior product. According to the simple models for static magnetic fields (resp. electric fields) which are governed by (0.1) (resp. (0.2)), we call (0.1) the magnetic type problem and (0.2) the electric type problem. Considering bounded smooth domains a c R3, we discussed in [ 131, by means of an appropriate Hilbert space method, the solvability and the representation of the solutions for both problems (0.1) and (0.2). Such a new approach was necessary to cover the general nonhomogeneous cases where v and E are matrix-valued functions. Here our aim is twofold. First, we …

Bases municipales de un impuesto general: las Cortes de Valencia de 1329

1983

A Numerical Method for the Analysis of Plane-Strain Forming Processes with Unilateral Constraints

1983

The Authors propose a numerical model for the solution of plane-strain forming processes, based on the linearization of the yield surface. This allows to employ the linear programming technique for the solution of the variational problem derived from the application of the upper-bound theorem. Such a model permits to take into account the unilateral constraints in a very simple way. Therefore it is well suited to solve a large class of problems, such as sheet forming, in which the unilateral constraints are often present.

Совершенствование производственных отношений в торговле

1983

Análisis de la estructura de corrientes Cargadas y Neutras a partir de procesos Nucleares Semileptonicos

1983

The Use of Electron Microscopy and Stereology in the Study of the Mammalian Pineal Gland

1983

Now that transmission electron microscopy (TEM) has been used for many years to study the pineal gland it is timely to evaluate what progress has been achieved by using this technique and to speculate which aspects of pineal research may benefit most by its application in the future.

On some Translation Planes Admitting a Frobenius Group of Collineations

1983

Publisher Summary This chapter presents some results concerning translation planes of dimension 2 over GF(q), where q = p r . π denotes such a plane. It is assumed that π has a collineation group F of order q 2 (q-1) satisfying the condition: there exists a point V e l ∞ such that F fixes V and acts (faithfully) as a Frobenius group on l ∞ – {V}.

Quasiconformal mappings and F-harmonic measure

1983

Brains burning fat: Different forms of energy metabolism in the CNS of insects

1983

Gas-liquid chromatographic analyses

1983

Abstract The gas chromatography of mixtures of n -alkyl acetates (CH 3 COOR, R = C 1 —C 8 ) and methyl esters of aliphatic n -carboxylic acids (R′COOCH 3 , R′ = C 1 —C 8 ) and certain of their monochlorinated derivatives has been studied on Carbowax 20M and SE-30 glass capillary columns under the same operating conditions. The separation of the isomeric monochlorinated esters was complete on Carbowax 20M, whereas on SE-30 the peaks of 6- and 7-chlorooctyl acetates and methyl (ω − 1)- and (ω − 2)-chlorooctanoates and -nonanoates partly overlapped. The complete separation of the mixtures could not be achieved, however, on Carbowax 20M, in spite of the use of various operating conditions. The …

Los problemas de reestructuración de la siderurgia en la década de los ochenta y sus repercusiones en el proyecto de la IV Planta Siderúrgica Integra…

1983

A priori, deducción y experiencia: (La metodología de la Física cartesiana)

1983

El objeto de esta ponencia es hacer ver que en la física cartesiana la categoría metodológica de deducción no es incompatible con la categoría etimológica de experiencia, que la aspiración cartesiana de que su Física no fuera llamada más que Geometría no significa que él sea uno de esos filósofos que, sin tener en cuenta algunas experiencias, piensan que la verdad nacerá de su propio cerebro 'como Minerva del de Júpiter'. En suma: que el necesario enraizamiento de la Física en la Metafísica (recuérdese la metáfora cartesiana del árbol de la filosofía), no destierra en absoluto del campo de la primera ni la experiencia ni la experimentación.

ORGANIZED LEARNING MODELS (PURSUER CONTROL OPTIMISATION)

1983

Abstract The concept of Organized Learning is defined, and some random models are presented. For Not Transferable Learning, it is necessary to start from an instantaneous learning; by a discrete way, we must form a stochastic model considering the probability of each path; with a continue aproximation, we can study the evolution of the internal state through to consider the relative and absolute probabilities, by means of differential equations systems. For Transferable Learning, the instantaneous learning give us directly the System evolution. So, the Algoritmes for the different models are compared.

Probleme der Massendatenhaltung bei einer epidemiologischen Studie zur kardiologischen Präventivdiagnostik

1983

Es wird der methodische Ansatz des datenverarbeitungstechnischen Teils einer epidemiologischen Grosstudie vorgestellt. Die Zielsetzungen und wichtigsten Merkmale der Studie werden kurz dargestellt. Weiterhin werden die praktischen Randbedingungen fur die Durchfuhrung des Projektes beschrieben. Das Konzept und die Realisierung der Datenspeicherung und des Retrievals werden ausfuhrlich dargestellt und diskutiert. Praktische Erfahrungen aus dem bisherigen Verlauf der Studie schliesen diesen Beitrag ab.

Matemáticas, Intuición y Dios en Descartes : un apunte sobre el 'círculo cartesiano'

1983

El objetivo de este artículo es abordar, una vez más, uno de los tópicos seculares al que conduce la exégesis Cartesiana: la supuesta circula­ridad, ya denunciada por Arnauld en sus objeciones a las Meditaciones Metafísicas, en que Descartes incurre al pretender fundamentar el criterio de toda verdad (claridad y distinción). No debe esperarse, por tanto, de lo que seguidamente va a exponerse aquí, una discusión de otras cues­tiones, no menos tópicas, de la filosofía Cartesiana, salvo en la medida en que afecten a nuestro problema. Así pues, nuestra discusión se cen­trará principalmente sobre aquel texto donde tal fundamentación del criterio de verdad pretende llevarse a cabo de manera más r…

On the wave interaction in a charged fluid with Hall and ion slip-currents

1983

The evolution of non linear small perturbations in a charged fluid with generalized Ohm's law is considered, pointing out the possibility of effects due to interaction between different waves. Following the perturbative reductive methods, some phase functions for studying interaction are introduced. A suitable hypothesis on their evolution permits us to prove that the amplitudes of the first order perturbation obey Burgers-like equations, in which the dissipative terms are not influenced by the Hall effect.

Profesors Voldemārs Langenfelds: personālais bibliogrāfiskais rādītājs

1983

Saturs: Priekšvārds. Bioloģijas zinātņu doktors profesors Voldemārs Langenfelds./ Profesors A. Mauriņš. Profesora V. Langenfelda publicētie darbi (1956.-1982.). Profesora V. Langenfelda rediģētie darbi. Profesora V. Langenfelda vadītās disertācijas. Raksti par profesoru V. Langenfeldu. Profesora V. Langenfelda publicēto darbu alfabētiskais rādītājs. Personu rādītājs.

Retention increments of isomeric chlorobenzenes

1983

The chlorobenzene isomers are used extensively as intermediates in a wide range of chemical products. More recently their determination in environmental situations has become of considerable importance and chromatographic procedures have been widely reported for their determination in both trace and major amounts. There are over 220 publications in which gas chromatography (GC) has been applied to the analysis of chlorobenzene. However, over 60 o/o of these works refer to the separation of only one isomer. Relatively few publications’-8 consider all the isomers, although the use of both capillary3’ and packedcolumns with polar and non-polar stationary phases has been reported. Temperature p…

LEVNADSFÖRÄNDRINGAR OCH KONTROLL

1983

Forfattaren analyserar individens mojligheter att kontrollera levnadsforandringar. Kontrolldimensionen behandlas i forhallande tili preventiva, konstruktiva, interventiva och lindrande atgarder.