Surfactant effect of Sb on the growth of Ag films on a sapphire substrate

1996

It is shown that a very thin layer of Sb may be used as a surfactant to modify the growth of silver films on an insulating substrate. The conduction (percolation) current flowing through a dispersed Ag film appears at a significantly smaller thickness due to the change in the growth mode of silver islands. Some practical applications are indicated.

Arheoloģija un etnogrāfija, 18

1996

Fractura-luxación posterior de hombro tratada mediante la técnica de McLaughlin

1996

Se presenta un caso de luxación posterior de hombro, con fractura por impactación de la cabeza humeral, ocasionada por crisis convulsivas. Estas lesiones no son fáciles de reconocer en los primeros momentos, y en nuestro caso se precisó de un estudio radiográfico en distintas proyecciones y una TAC. Se realizó tratamiento quirúrgico mediante la técnica original de McLaughlin. A los 7 meses de la intervención el paciente ha recuperado casi totalmente la movilidad en dicho hombro y está libre de dolor. A case of posterior dislocation of the shoulder with locked fracture of the humeral head after a convulsive seizure is reported. At first stages, this type is very difficult to recognize. In ou…

Influence de l'origine géographique et technologique sur les caractéritiques sensorielles des beurres: identification et quantification des composés …

1996

*INRA Laboratoire de recherches sur les arômes BP 86510 21065 Dijon cedex (FRA). Etiévant P.X CONFIDENTIEL Diffusion du document : INRA Laboratoire de recherches sur les arômes BP 86510 21065 Dijon cedex (FRA). Etiévant P.X CONFIDENTIEL Diplôme : Dr. d'Université

Agnès de Bourgogne, duchesse de Bourbon

1996

Nuevas aportaciones a la historia constructiva del Hospital Mayor de Pobres de Xàtiva, a la luz de los datos aparecidos en el transcurso de la restau…

1996

Centres primaires et développements secondaires de l’urbanisme en Europe : l’exemple du pays éduen

1996

International audience

Intervento di ripristino della copertura arborea su un'area del parco dell'Etna interessata da colata lavica recente.

1996

The planning and results of a reafforestation carried out on a private area occurring in the Etna Wildlife Reserve C zone are presented. The area consists of a terraced slope 70.000 square meters wide, made out of a lava flow part which dates back to 1983. At first were planted and seeded Astragalus siculus Biv. and Festuca circummediterranea Patzke, in order to set a pioneer vegetation cover; then were planted some aboreal species having a leading role in the physiognomical characterisation of the Etna landscape, like Betula aetnenis Raf., Pinus laricio Poiret, Populus tremula L. The success of the intervention is shown by the fairly quick penetration of 26 species coming from the neighbou…

El Regne Unit, com a estat plurinacional

1996

El Reino Unido es un estado plurinacional con una estructura política centralizada. Este trabajo intenta poner de relieve la existencia de diversas nacionalidades en dicho país y sugiere posibles soluciones.

Sobre la vegetación de los roquedos silíceos de las partes centrales del Sistema Ibérico

1996

Stratospheric Aerosols After Pinatubo: Results from the 1991/2 Airborne Arctic Stratospheric Expedition (AASE II)

1996

The Airborne Arctic Stratospheric Expedition II involved measurements of key quantities concerning the chemistry and physics of the stratospheric ozone loss from the NASA operated DC-8 and ER-2 platforms. The series of AASE II flights was conducted between August 22, 1991, until March 26, 1992, from Moffett Field (California), Fairbanks (Alaska), and Bangor (Maine). The timing and location of the AASE II flights permitted to obtain a large data basis pertaining to the effects of the Mt. Pinatubo volcanic plume spreading in the northern hemispheric stratosphere. This contribution presents results obtained from the ER-2 in-situ measurements up to altitudes of ≈ 20 km in the polar stratosphere…

Physiological stress responses ofAnguilla anguillato fenitrothion

1996

The present communication deals with the effect of fenitrothion (0.04 ppm) on the carbohydrate metabolism of the european eel Anguilla anguilla and its recovery from intoxication. Analysis of various parameters such as glycogen, lactate and glucose was made on different eel tissues after 2, 8, 12, 24, 32, 48, 56, 72 and 96 hr of fenitrothion exposure. Subsequently, the fish were allowed recovery periods of 8, 12, 24, 48, 72, 96, 144 and 192 hr in clean water, and the same parameters were evaluated. Muscle glycogen content decreased significantly during the exposure time, while blood glucose levels increased markedly. Gill, muscle and blood lactate values increased during pesticide exposure.…

Fuentes bibliográficas para el estudio de la flora vascular del Sistema Ibérico I: Tesis y tesinas

1996

Los cementerios de época visigoda

1996

Contribución al conocimiento del género "Pilosella" en España III: Sección "Auriculina"

1996

Production, identification , and toxicity of gamma - decalactone and 4-hydroxydecanoic acid from Sporidiobolus spp.

1996

International audience

Procesado óptico de información con fuentes incoherentes/

1996

Isobaric Vapor−Liquid Equilibria of the Water + 1-Propanol System at 30, 60, and 100 kPa

1996

Isobaric vapor−liquid equilibria for the water + 1-propanol system are reported at 30, 60, and 100 kPa. The results were found to be thermodynamically consistent according to Van Ness−Byer−Gibbs, Kojima, and Wisniak methods. The system shows a minimum boiling azeotrope, and the azeotropic composition is scarcely shifted with pressure. Results were compared with literature values. The data were correlated with Margules, Van Laar, Wilson, NRTL, and UNIQUAC liquid-phase activity coefficient models.

Dynamics of Polymer Chains Confined in Slit-Like Pores

1996

Monte Carlo simulations of an off-lattice bead spring model of polymer chains are presented, confining the chains between two repulsive parallel planes a distance D apart. Varying the chain length N from N = 16 to N = 128, we show that under good solvent conditions the chains behave like two-dimensional self-avoiding walks, their mean square gyration radius scales as (R g 2 ) N 2v with v = 3/4. The density profile across the slit is independent of N and maximal in the center of the slit. The dynamical properties of the chains are found to be in full agreement with the Rouse model with excluded volume in d = 2 dimensions, the relaxation times vary like τ N Z with z = 2v +1 = 5/2, the diffusi…

The molecular structure of N-hydroxyurea

1996

Ab initio calculations were performed on the tautomers and conformers of N-hydroxyurea using a 6-31G** basis set. The minimum-energy structures have been found and the importance of the intramolecular hydrogen bond as the stabilizing factor was pointed out. © 1996 John Wiley & Sons, Inc.

La génesis de la fiscalidad municipal en la ciudad de Valencia (1238-1366)

1996

Model building and molecular mechanics calculations of mitoxantrone-deoxytetranucleotide complexes: Molecular foundations of DNA intercalation as cyt…

1996

Several intercalation complexes of the antitumor-active drug mitoxantrone with base paired tetranucleotides were constructed by molecular modeling using computer graphics and molecular mechanics calculations. The mitoxantrone molecule favours DNA binding into CG intercalation site. The two side chains of the drug are orientated into the major groove and fixed by hydrogen bonds with the nucleotide bases. This molecular study can be helpful for understanding the mode of action of cytostatically active compounds and to design new structurally related compounds of the anthraquinone drug type.

Iterative pairs and multitape automata

1996

In this paper we prove that if every iterative k-tuple of a language L recognized by a k-tape automaton is very degenerate, then L is recognizable. Moreover, we prove that if L is an aperiodic langnage recognized by a deterministic k-tape automaton, then L is recognizable.

Thermodynamics of yeast cell osmoregulation: Passive mechanisms

1996

International audience; The response of yeast cells to osmotic pressure variations of the medium were studied through the kinetics of cell-volume modifications corresponding to the mass transfer of water and solutes. Osmotic variations were made by modification of the concentration of an external binary solution (polyol/water) without nutritive components. Two phases were distinguished in the thermodynamic response. A transient phase following an osmotic shift, which is characterised by rapid water transfer across the cell membrane and whose kinetics determine cell viability; then, a steady-state phase is reached when the cell volume becomes quasi-constant. The response of the cell during t…

El poder visible. Demanda y funciones del arte en la corte de Alfonso el Magnánimo

1996

Endovaskuläre Therapie aortaler Aneurysmen: erste klinische Ergebnisse

1996

PURPOSE A clinical study aiming at examining the implantation technique and the clinical results of a new vascular prosthesis in endovascular therapy of aneurysms of the aorta. MATERIAL AND METHODS In 21 patients (20 men of 55 to 87 years of age, average age 70 years) with aneurysms of the infrarenal abdominal aorta (AAA n = 19) and the thoracic aorta (n = 2), a self-expanding nitinol stent with outer Dacron sheath (tubular prosthesis n = 4; bifurcation prosthesis n = 17) was implanted by means of an F-18 introductory set after surgical opening of the inguinal artery. RESULTS By means of the 4 tubular prostheses and 13 of the 17 bifurcation prostheses the aneurysm was bypassed completely. I…

Stationary semiconductor equations

1996

The behaviour of a semiconductor device is usually modelled by three coupled nonlinear partial differential equations of elliptic type. Such a system for the transport of mobile charge carriers was first introduced by Van Roosbroeck [Van Roosbroeck] in 1950. Nowadays there are many models which differ in their choice of unknowns, scales, various types of nonlinearities etc. (see, e.g., [Brezzi], [Groger], [Markowich], [Markowich, Ringhofer, Schmeiser], [Mock, 1972], [Polak, den Heijer, Schilders, Markowich], [Pospisek], [Pospisek, Segeth, Silhan], [Selberherr], [Sze], [Zlamal, 1986]).

Shape design optimization in 2D aerodynamics using Genetic Algorithms on parallel computers

1996

Publisher Summary This chapter presents two Shape Optimization problems for two dimensional airfoil designs. The first one is a reconstruction problem for an airfoil when the velocity of the flow is known on the surface of airfoil. The second problem is to minimize the shock drag of an airfoil at transonic regime. The flow is modeled by the full potential equations. The discretization of the state equation is done using the finite element method and the resulting non-linear system of equations is solved by using a multi-grid method. The non-linear minimization process corresponding to the shape optimization problems are solved by a parallel implementation of a genetic algorithm (GA). Some n…

Interfuel substitutions in the Great Britain's industry in the 1987-1993 period : a translog approach

1996

According to the Department of Trade and Industry (1994), the British consumption of fuel for manufacturing industry, over the period 1973-1993, may be characterized by, firstly, a substitution of oil by gas, and secondly, an increase of energy efficiency. This study attempts to tackle both phenomena by using an econometric approach, based upon translog interfuel substitution models. To do so, the « classic » translog model ought to be enhanced in order to capture the prospect of (1) a non-homothetic feature of the manufacturing production process, (2) energy efficiency -via the implementation of an embodied technical change specification, and (3) short run and long run fuel consumption evo…

Los fondos de inversión mobiliaria en España : análisis de rentabilidad y performance

1996

Análisis de la interacción grupal a través de medidas de observación en comunicación mediada

1996

ResumenEn la actualidad, las nuevas tecnologias estan favoreciendo la formacion de grupos de trabajo distribuidos. Estos grupos pueden tener un caracter relativamente permanente como un equipo editorial, o un equipo de diseno de distintos departamentos de una multinacional. Los Psicologos del Trabajo y de las Organizaciones estan retados a proporcionar teorias y modelos para el analisis y diseno de estos grupos. El presente estudio tiene como objetivo analizar el proceso de interaccion de los grupos que se comunican a traves de tecnologias de la informacion, centrandonos en aspectos que surgen o varian con mayor frecuencia a lo largo de ese proceso en funcion de la tecnologia utilizadapara …

Epidemiology, prevention and screening for prostate cancer.

1996

Prostate cancer is a growing social problem. The economical impact is high and is likely to become greater in future years, not only because the number of patients diagnosed with prostatic neoplasias is increasing steadily, but also because of the promotion of screening programmes and the rise in the number of surgical procedures available. It can be concluded that, at the present stage, widespread implementation of screening cannot be recommended. The answer to the question of screening can only be provided by large randomised trials, comparing either screening versus no screening, or early versus delayed treatment in patients in whom early cancer is detected by screening.

O języku mówionym mieszkańców Jasiony

1996

Resting metabolic rate and postabsorptive substrate oxidation in morbidly obese subjects before and after massive weight loss

1996

OBJECTIVE: To investigate the changes of resting metabolic rate (RMR) and postabsorptive oxidation of carbohydrates (CHO), lipids (LIP) and proteins (PT) in morbidly obese subjects after long-term stable massive weight reduction. DESIGN: Longitudinal, intervention study of a bilio-pancreatic by-pass. SUBJECTS: Ten (Four men, six women) obese subjects (BMI: 53.7 ± 2.1 kg/m2, men, nine women) control subjects (BMI: 21.4 ± 1.0 kg/m2). MEASUREMENTS: RMR and substrates oxidation (indirect calorimetry), body composition (bioelectrical impedance), plasma concentrations of glucose, FFA, insulin and thyroid hormones before (T0, prior to surgery), during (T1: 1-3 months, and T2: 9-16 months following…

Bouleversement de l'espace religieux : Chartres, 1790-1815

1996

National audience

Définir la ville

1996

The city can hardly be grasped by a simple definition. Most of the available definitions are statistical or descriptive and they fail to represent the complex, multidimensional and changing nature of the urban phenomenon. The definition proposed in this paper is related to economic theory of city formation and is based on the agglomeration process and the diversity of agents and activities.