showing 36 of ~574560 from 574555 documents
DETECTION OF ENTERIC ADENOVIRUS 40 AND 41 IN STOOL SPECIMENS BY MONOCLONAL-BASED ENZYME IMMUNOASSAYS
1996
o examine the role of enteric adenoviruses (Ad40 and Ad41) in children with acute gastroenteritis, we evaluated 273 children with diarrhoea and 137 without enteric symptoms in Palermo, Italy, during an 8-month period. Stools were tested by two home-made monoclonal-based ELISAs to detected genus-specific adenovirus antigen and to type Ad40 and Ad41. Twenty-five samples (6.1%) were found to contain adenovirus, 18 of which were grown in Graham 293 and in HEp-2 cells. Ad40 and Ad41 were detected in 2.6% of children with diarrhoea and in none in the control group, while non-enteric adenoviruses were obtained from both patients (3.2%) and controls (6.5%). Samples containing Ad40 and Ad41 were pos…
Beeinflußt der Chirurg das Lokalrezidivrisiko beim Rektumkarzinom?
1996
Die Prognose des Rektumkarzinoms wird unter anderem vom Auftreten eines Lokalrezidivs bestimmt. Allgemein bekannt ist der Einflus des UICC-Stadium, der Tumorgrose, des Lymphknotenstatus zum Zeitpunkt der Erstdiagnose, und der Tumorlokalisation auf das Lokalrezidivrisiko. In jungster Zeit wird zunehmend der Einflus des Operateurs als selbstandiger prognostischer Faktor diskutiert [4, 5].
Comparative immunologic models can enhance analyses of environmental immunotoxicity
1996
Abstract To treat immune systems and how environments affect them is a unique challenge especially when the environment is considered in its broadest perspective: internal and external. Internal focuses on relationships between immune, nervous and endocrine systems (neuroendocrine) and how they interact to maintain homeostasis. External considers physical and chemical influences that act to change the internal. Using animal models is based upon phylogeny which focuses on invertebrates, fish, amphibians, and reptiles, including mammalian results and relationships to humans. Emphasizing primitive animals is due to a growing interest in using them as models, sentinels, surrogates—predictors of…
Microscopic aspects of solute-solute interactions induced by the solvent
1996
Nous presentons les plus importants resultats que nous ayons obtenus par des simulations etendues de dynamique moleculaire de solutions aqueuses contenant des modeles de solute hydrophiles et hydrophobes. Ces simulations determinent les forces induites par le solvant sur les solutes (SIFs) en fonction du type de solute, de la separation solute-solute et de leur orientation mutuelle. Les proprietes structurales et dynamiques du solvant autour des solutes ont ete analysees pour comprendre leur relation avec les SIFs. les presents resultats sont compares a des observations experimentales et precedentes stimulations sur des solutions aqueuses de biomolecules.
Low-energy extracorporeal shock wave therapy for painful heel: a prospective controlled single-blind study.
1996
The aim of this prospective single-blind pilot study was to explore the pain-alleviating effect of low-energy extracorporeal shock wave therapy (ESWT) in painful heel associated with inferior calcaneal spurs. Thirty patients who suffered from persistent symptoms for more than 12 months qualified for low-energy ESWT and were assigned at random to two groups, real or simulated ESWT. Before beginning the treatment, any other therapy was stopped for a period of 6 weeks. The shock waves were applied by an experimental device allowing exact localization through an integrated fluoroscopy unit. Patients were treated three times at weekly intervals. Each time 1000 impulses of 0.06 mJ/mm2 were given …
Naamiososiologiaa ja mielikuvamasuuneja : artistinen silmäys "yhteiskunnalliseen mainontaan" manipulatiivisena mahtina barokkiajan Euroopassa
1996
Teleología y astucia de la razón en Hegel
1996
El objetivo general del artículo es comparar la aplicación que hace Hegel del concepto de astucia de la razón en dos contextos diferentes ¿por un lado, en su análisis del trabajo material en la Ciencia de la Lógica, y, por otro lado, en su filosofía de la historia¿ señalando algunas semejanzas y diferencias. En ambos casos, la doctrina de la astucia de la razón permite concebir en términos de una mediación dialéctica la relación entre una causalidad fenoménica ¿el mecanismo de la naturaleza, en un caso; el antagonismo entre los intereses particulares de individuos y pueblos, en el otro¿ y un plan racional ¿la transformación del mundo material para satisfacer los fines del hombre, en un caso…
Biomasse, productivité et transferts de matière organique dans une séquence altitudinale de peuplements de Castanea sativa Mill de l'Etna
1996
Les differents compartiments et flux caracterisant la repartition de la matiere organique sont etudies dans quatre taillis de Castanea sativa Mill, etages le long d'un gradient altitudinal, dans le massif de l'Etna (Sicile). Les biomasses epigees sont respectivement de 22 et de 24 Mg ha -1 a 7 ans, 83 Mg ha -1 a 12 ans et 100 Mg ha -1 a 22 ans, avec de bonnes correlations : biomasse/âge et biomasse/facteurs climatiques. Le bois represente 95 % et les feuilles 5 % de ces biomasses. Les productions aeriennes perennes s'echelonnent entre 2,4 et 5,4 Mg ha -1 an -1 en relation a la fois avec l'âge des taillis et leur localisation geographique. Les retombees de litiere, observees durant 3 annees …
Meropenem Permeation through the Outer Membrane of <i>Pseudomonas aeruginosa</i> Can Involve Pathways Other than the OprD Porin Channel
1996
The outer membrane protein (OMP) OprD is the major channel through which carbapenems permeate the outer membrane of Pseudomonas aeruginosa. In this study, we analyzed the OMP profiles of several P. aeruginosa clinical isolates showing diminished susceptibility to imipenem while remaining susceptible to meropenem. All these isolates lacked OprD or showed a reduced expression of this porin. Susceptibility to meropenem was thus independent of the level of OprD expression, indicating that the antimicrobial could be taken up via an alternative route. The level of expression of OprC (70 kD) was also unrelated to meropenem susceptibility. Nevertheless, OMPs OprF and OprE were expressed by all isol…
Suitability of a content-based retrieval method in astronomical image databases
1996
Abstract Indexing and retrieval methods based on the image content are required to effectively use information from large repositories of digital images. Usually, the way to search for data and images in astronomical archives is via textual queries expressed in terms of constraints on observation parameters. In this paper we present a method for automatic extraction of images by using shape descriptions based on local symmetry. The proposed indexing methodology has been developed and tested inside JACOB, a prototypal system for content-based video database querying.
Kinetic analysis of "living" polymerization processes exhibiting slow equilibria. 6. Cationic polymerization involving covalent species, ion pairs, a…
1996
The kinetics of cationic polymerization is studied theoretically in accordance with a three-state mechanism which consists of two successive equilibria: the ionization/ion collapse equilibrium between covalent species and ion pairs, and the subsequent dissociation/association equilibrium between ion pairs and free ions. The number- and weight-average degrees of polymerization and the polydispersity index (PDI), Pw/Pn, are derived. The molecular weight distribution of the polymer generated from this mechanism is generally broader than that of polymers formed via a two-state mechanism, i.e. with only one equilibrium either between covalent species and ion pairs or between covalent species an…
Studentu komunikatīvo prasmju līmeņa paaugstināšanas pedagoģiski psiholoģiskie līdzekļi : pedagoģijas teorija un vēsture
1996
Advisor: Kramiņa, Ingrīda
JACOB: Just A COntent Based query system for video databases
1996
The increasing development of advanced multimedia applications requires new technologies for organizing and retrieving by content databases of still digital images or digital video sequences. The authors describe JACOB, a prototypal system allowing content-based browsing and querying in video databases. The JACOB system automatically splits a video into a sequence of shots, extracts a few representative frames (said r-frames) from each shot and computes r-frame descriptors based on features like color and texture. No user action is required during the database population step. Queries exploit this image content description and may be direct or by example
Algunos problemas sobre holomorfía en dimensión infinita
1996
El fenómeno Chabás
1996
La apertura del Archivo Secreto Vaticano consagró el concepto moderno de archivo como fuente de documentación accesible a los investigadores. Roque Chabás participa de esa inquietud, conoce su metodología y sigue las directrices de la crítica histórica. Chabás cree poder hacer y decir en Valencia lo que las autoridades de la ciencia católica han dicho y hecho en Roma. El movimiento cultural europeo -los impulsores de la Monumenta Germaniae historica- encuentra en Chabás un campo abonado. El canónigo Chabás forma parte de la historia de los archivos no sólo de los eclesiásticos valencianos, sino de los españoles en general, puesto que supo aplicar criterios modernos en la organización de arc…
Delitos y penas en la España del siglo XVIII
1996
Nuclear Physics: The Nordic View
1996
Oxyfunctionalization of Aliphatic Esters by Methyl(trifluoromethyl)dioxirane
1996
The oxidation of lineal, cyclic, and bicyclic aliphatic p-chlorobenzoic and p-chorobenzenesulfonic acid esters 2 with methyl(trifluoromethyl)dioxirane (TFDO) (1) occurs at positions in the hydrocarbon chain distant from the directing group with a significant degree of selectivity to give the corresponding keto or hydroxy esters. Compounds 2 are relatively deactivated with respect to this oxidation due to the electron-withdrawing nature of the ester moiety. Methylene Cα−H and Cβ−H bonds remain unchanged in all cases, but tertiary Cβ−H bonds undergo oxidation with TFDO (1). Stereoelectronic factors are used to explain the faster reaction rate in competition experiments for the oxidation of en…
Platelet membrane fluidity and platelet membrane lipid pattern in several clinical conditions
1996
El sobreentendido
1996
El artículo analiza el concepto de Sobreentendido, al que intenta dotar de un valor metalingüístico concreto. Partiendo de la teoría griceana sobre los distintos tipos de significados implícitos y del enfoque de la lingüística interaccional francesa, se integra el sobreentendido en el marco de la pragmática como un tipo de implícito no conversacional y no convencional.
David, Goliat y el funcionalismo
1996
Formes terrestres, diposits eòlics i marins de la serra gelada
1996
Se estudia la geomorfología de la Serra Gelada, su red de drenaje y los tres frentes marinos que presenta este sector litoral montañoso situado en la extremidad de las cadenas prebéticas valencianas. Destacan en el frente marino suroriental determinadas formaciones eólicas cuaternarias que alcanzan cerca de los 200 m de altitud y se implican con taludes y conos de materiales desprendidos de los acantilados. Se analiza la morfología de la plataforma litoral y las características sedimentológicas de los materiales costeros.
Comparative effects of flavonoids and model inducers on drug-metabolizing enzymes in rat liver
1996
International audience
EnRedados : aplicaciones y experiencias de Internet en España con interés educativo
1996
This paper review the impact of internet in Education, scpecially in our country. It show also the main educational experiences on internet in Spain, including institutional, commercial, professional and school sites.
Nursery Education for the Two-Year-Old : Social and Educational Effects
1996
International audience
El pintor valenciano Higinio Blat
1996
Síndrome compartimental crónico de esfuerzo Afectación bilateral del compartimento anteroexterno de la pierna en deportistas
1996
Se presenta nuestra experiencia en el manejo de (i casos de síndrome compartimental crónico del esfuerzo por afectación colateral del compartimento anteroexterno del EEII. El diagnóstico se confirmó mediante medición de presiones intracompartimentales con catéter de hendidura, considerando patológico cuando ante clínica compatible la presión basal no se recupera en al menos 15 minutos. Se realizó doble fasciotomía subcutánea en los 6 casos consiguiendo la desaparición de la sintomatología y reincorporación a los entrenamientos en 6 semanas en todos los casos. No se han observado complicaciones ni recidivas tras un seguimiento medio de 2 años (1-3). Our experience on the management of 6 case…
Mutationsanalyse des 5-HT1A-Rezeptor-Gens bei schizophrenen und affektiven Psychosen
1996
Storungen im Serotoninstoffwechsel werden bei einer Vielzahl neuropsychiatrischer Erkrankungen (z. B. Angststorung, Depression, Schizophrenie, Alkoholismus, Migrane, Aggressives Verhalten, Suizidalitat, Tourette-Syndrom) beobachtet. Die Serotonin (5-Hydroxytryptamin, 5-HT) Rezeptoren konnen in mindestens drei Hauptgruppen unterteilt werden und zwar in 5-HTr, 5-HT2- und 5-HT3-Rezeptoren. Beim Menschen konnten bislang funf 5-HTrRezeptorsubtypen kloniert werden: der 5-HT1A, 5-HT1Dα, 5-HT1Dβ, 5-HT1E und der 5-HT1F Rezeptor (Ubersicht bei Shih et al. 1995). Der 5-HT1A ist der pharmakologisch am besten charakterisierte 5-HT1-Subtyp.
Fichte und die Metaphysik des deutschen Idealismus
1996
Im November 1917, im Rahmen der von der Universiüit Freiburg organisierten Kurse füi· die Kriegsteilnehmer, hielt Edmund Husserl drei . Vortrage über das Thema ,Fichtes Menschheits Ideal'. ,Seit 1914', sagt er, ,ist der Tod ... kein Ausnahmeereignis mehr. Der Tod hat sich sein heiliges Urrecht wieder erstritten. Er ist wieder der groBe Mahner in der Zeit an die Ewigkeit.' 1 ,;Und so sind uns denn auch neue Sehorgane für den deutscheri Idealismus erwachsen . ; . für Fichte, den Philosophen der Befreiungskriege. Von ihm, von seiner Neugestaltung der Ideale echten Menschentums aus den tiefen Quellen seiner Philosophie will ich hier sprechen.' Neue Sehorgane, denrt w&s unsere Beziehung zum deut…
In vitro modeling of the ternary interaction in juvenile hormone metabolism
1996
The gradual decline in juvenile hormone (JH) titer followed by its complete clearance early in the last larval instar is required for the onset of the metamorphosis of lepidopterous larvae. JH titer is regulated by both biosynthesis and degradation. Two major pathways for JH metabolism, ester hydrolysis and epoxide hydration, are due to JH esterase (JHE) and JH epoxide hydrolase (JHEH), respectively. In vitro experiments designed to elucidate the molecular mechanism of JH metabolism are described. First, microsomal JHEH in Manduca sexta eggs was identified by using photoaffinity analogs of JH, and purified to homogeneity with ion exchange and hydroxylapatite columns. Purified JHEH from M. s…
Analysis of 24-h noninvasive ambulatory blood pressure profiles by a third-degree polynomial approach
1996
Extensive experience of the circadian variation of blood pressure (BP) has been reported. But some problems exist concerning the correct and satisfactory evaluation of 24-h BP profiles. A well-known approach is the Halberg's 'cosinor' method. But it could be considered inadequate for blood pressure recordings because it is based on a rigid model that does not practically fit empirical data. We suggest an approach based on a cubic function as a suitable method for such an analysis. Our investigation studied the behavior of 24-h blood pressure by a model where the function f(t) is a third-degree polynomial. We recruited 52 untreated patients affected by essential hypertension. Ambulatory BP r…
Synthesis, spectroscopic (Mössbauer, IR and NMR) and X-ray structural studies of diorganotin complexes of 2,2′-bipyrimidine and further NMR studies o…
1996
Abstract The ligand 2,2′-bipyrimidine (bipym) was reacted with diorganotins R 2 SnCl 2 (R = methyl, ethyl) and complexes of the types R 2 SnCl 2 bipym, R 2 SnCl 2 bipym · bipym and (R 2 SnCl 2 ) 2 bipym were synthesized and studied by 1 H and 13 C NMR spectroscopy in solution, and by IR and Mossbauer spectroscopy in the solid state and frozen solutions. The complexes Et 2 SnCl 2 bipym · bipym and (Et 2 SnCl 2 ) 2 bipym were characterized by X-ray diffraction methods. In both complexes the tin environment is octahedral with chloro atoms in a cis disposition, the ethyl groups in a trans disposition and two N atoms from the ligand bipym. the second complex is a centrosymmetric binuclear specie…
Coherent aspects of the local dipolar field in echo dynamics: A spectral narrowing effect.
1996
We have measured the spectral content of the echo radiation emitted by a two-level spin system ([${\mathrm{AlO}}_{4}$${]}^{0}$ centers in quartz), after a two-pulse excitation sequence, ${\mathrm{\ensuremath{\theta}}}_{1}$-\ensuremath{\tau}-${\mathrm{\ensuremath{\theta}}}_{2}$. In general, the experimental spectral shapes reproduce qualitatively those calculated for an inhomogeneous system of noninteracting spins. However, we found that in certain ranges of the sequence parameters (${\mathrm{\ensuremath{\theta}}}_{1}$, ${\mathrm{\ensuremath{\theta}}}_{2}$, and \ensuremath{\tau}) the widths of the experimental spectra are less than expected by a factor that amounts up to 0.5. The observed na…
Inducing characters and nilpotent subgroups
1996
If H H is a subgroup of a finite group G G and γ ∈ Irr ( H ) \gamma \in \operatorname {Irr}(H) induces irreducibly up to G G , we prove that, under certain odd hypothesis, F ( G ) F ( H ) \mathbf {F}(G) \mathbf {F}(H) is a nilpotent subgroup of G G .
Nonlinear inverse bremsstrahlung and highly anisotropic electron distributions
1996
A procedure is proposed to deal with the approximate solution of the kinetic equation for the velocity distribution function of electrons in a fully ionized plasma in the presence of strong, high frequency radiation. The Legendre polynomial expansion is applied after the kinetic equation has been written in an oscillating frame, where some directions are appropriately scaled, with the aim of making approximately isotropic, on the average, distributions that are otherwise anisotropic. The equations are derived for the isotropic part of the electron distribution in the scaled frame and for the scaling factor. The procedure is meant to display its potential in cases where the electron distribu…
Présentation
1996
Prtésentation d'un dossier thématique de la revue Cinémas, publiée à l'université de Montréal /(Canada), autour de la représentation du corps humain au cinéma et fixant la problématique et l'intérêt de ce débat à la fin du XXe siècle.