showing 36 of ~574560 from 574555 documents
Estudio estructural y funcional de la región 3' del gen FBP1 de Saccharomyces cerevisiae
1996
Sobre los táxones del género "Hieracium L. (Composi(ae)" descritos como nuevos en España. I. Letras A-B
1996
Diferencias de sexo en los efectos de los neurolépticos sobre la respuesta de escape-evitación en ratones
1996
Algunos rasgos de la figura de José Cuatrecasas y su correspondencia con Carlos Pau
1996
Pathogenesis of Sepsis Syndrome: Possible Relevance of Pore-Forming Bacterial Toxins
1996
This review focuses on a group of bacterial products whose very existence is known to only a minority of clinicians, and whose potential significance as inducers of the sepsis syndrome has eluded the attention of most microbiologists. This is unfortunate because pore-forming bacterial toxins possess all the properties for contributing to the pathogenesis of local and systemic inflammatory reactions. Because pore formers generally are highly immunogenic proteins, the prospects for immune intervention are described that may eventually be of benefit to patients. The subject is therefore of interest not only from a theoretical but also from a practical point of view.
Polyelectrolytes Grafted to Curved Surfaces
1996
We present a scaling theory to describe equilibrium conformations of weakly charged polyelectrolyte molecules grafted at one end onto impermeable surfaces of various morphologies (spheres, cylinders) and of arbitrary curvature. We focus on the case of sufficiently densely grafted chains, i.e., on curved polyelectrolyte brushes. Different regimes of the behavior of curved polyelectrolyte brushes can be distinguished, depending on grafting density, surface curvature, and chain length. We present phase diagrams of the system describing these regimes and discuss the crossover conditions. We also analyze the effect of charge annealing in curved polyelectrolyte brushes.
Study of radiative leptonic events with hard photons and search for excited charged leptons at S**(1/2) = 130-GeV - 136-GeV
1996
During the last 1995 data acquisition period at LEP, the DELPHI experiment collected an integrated luminosity of 5.9 pb−1 at centre-of-mass energies of 130 GeV and 136 GeV. Radiative leptonic events (e,μ,τ) with high energy photons were studied and compared to Standard Model predictions. The data were used to search for charged excited leptons decaying through an electromagnetic transition. No significant signal was found. From the search for pair produced excited leptons, the limits me∗>62.5 GeV/c2, mμ∗>62.6 GeV/c2 and mτ∗>62.2 GeV/c2 at 95\% confidence level were established. For single excited lepton production, upper limits on the ratio λ/mℓ∗ of the coupling of the excited charged lepto…
La génesis de la fiscalidad municipal en Cataluña
1996
En 1361, el municipio de Barcelona ingresaba una cantidad cercana a las 52.000 l.; de esta suma, el 56% procedía de los impuestos indirectos (imposicions), el 34% de la deuda pública y sólo un 9% del impuesto directo. Un año antes, en 1360, la universidad de Cervera ingresaba una cifra próxima a las 7.000 l.: mientras el 40% procedía de las imposicions, el 60% restante se repartía, casi a partes idénticas, entre la deuda pública y la talla. En 1357/1358, los ingresos del municipio de Yalls ascendían a 763 l.: el 70% de esta cantidad venía de las imposicions y el 30% de las talles. Un año más tarde, en 1359, la universidad de Reus ingresaba 1.237 l.; el 41% de esta cifra procedía del impuest…
Después de la Germanía: control militar en Xátiva y Alzira (1522-1524)
1996
Elementare Newtonsche Mechanik
1996
Dieses erste Kapitel befasst sich mit der Kinematik und Dynamik von endlich vielen Massenpunkten, die zwar inneren und eventuell auch auseren Kraften unterworfen sein mogen, deren Bewegung aber nicht durch zusatzliche Bedingungen (wie die Vorgabe von starren Abstanden, von Kurven, entlang derer einzelne Massenpunkte gleiten sollen, Begrenzungsflachen und dergleichen) eingeschrankt sind. Dies bedeutet, dass man solche mechanischen Systeme direkt mit den Newton’schen Gleichungen angehen kann und noch nicht gezwungen ist, zunachst die dynamisch wirklich unabhangigen, verallgemeinerten Koordinaten aufzusuchen, bevor man die Bewegungen selbst studieren kann. Hierauf bezieht sich die Bezeichnung …
Purification and reassessment of ligand binding by the recombinant, putative juvenile hormone receptor of the tobacco hornworm, Manduca sexta
1996
The 29 kDa protein from the larval epidermis of the tobacco hornworm, Manduca sexta, that specifically bound photoaffinity analogs of JH I and JH II was produced by a recombinant baculovirus (rJP29). The higher of the two molecular weight forms made corresponded to a protein that could be formed by read‐through of the TGA termination codon to the following TAA. The previously reported, apparent high affinity binding of [methyl‐3H]‐JH I by rJP29 as measured by the dextran‐coated charcoal (DCC) assay [Palli et al., Proc Natl Acad Sci USA 91:6191–6195 (1994)] was found to be artifactual due to endogenous cellular esterases that co‐purified with rJP29 through both DEAE cellulose and MonoQ chrom…
Diagnóstico precoz de la osteoporosis transitoria de la cadera versus necrosis isquémica de la cabeza femoral: ¿existen realmente signos diferenciale…
1996
—Se han estudiado de forma retrospectiva las posibles diferencias clínicas y en pruebas de imagen de 2 procesos patológicos: la osteoporosis transitoria de la cadera (OTC) y la necrosis isquémica de la cabeza femoral (NICF). El estudio se ha llevado a cabo sobre 7 pacientes diagnosticados de OTC y se han comparado los hallazgos obtenidos con 12 casos de NICF en fase inicial de evolución. Se debate si la OTC es un síndrome distinto a la NICF o si es la manifestación de un estadio precoz y reversible de la misma. Las pruebas de imagen en que se ha basado el estudio han sido: la radiografía simple, el rastreo óseo isotópico y, principalmente, la resonancia magnética (RM). Se han encontrado sig…
Genetic control of male cuticular hydrocarbons in Drosophila melanogaster
1996
0016-6723 (Print) Comparative Study Journal Article; 7-tricosene (7-T) and 7-pentacosene (7-P) are the two main hydrocarbons on the cuticle of male Drosophila melanogaster. These two substances might play a pheromonal role during courtship behaviour. We investigated the genetic basis of the quantitative polymorphism observed in the production of 7-T and 7-P. Strains of different geographic origin, with males producing either predominantly 7-T or predominantly 7-P, were hybridized with strains carrying genetic markers. We found that chromosome II changes the balance between 7-T and 7-P while chromosome III regulates the overall quantity of both 7-monoenes. We have also characterized and roug…
Etats de Bourgogne
1996
International audience
Fractura bilateral de epitroclea: a propósito de 1 caso
1996
Presentamos 1 caso infrecuente de fractura bilateral de epitroclea en un paciente varón de 15 años, tratado mediante osteosíntesis con agujas de Kirschner más transposición anterior de ambos nervios cubitales. We present an unfrequent case of bilateral fracture of the medial epicondyle, in a 15-year-old boy that was treated with Kirschner wires and anterior transposition of the ulnar nerve.
Los censos en los manuales de derecho civil de Juan Sala y Salvador del Viso
1996
La Universidad de fines del siglo XVIII e inicios del siglo XIX había introducido ya los manuales en su enseñanza. A través de ellos podemos inferir lo que se explicaba en las clases y los niveles de conocimiento que se intentaban transmitir a los alumnos. Dos manuales valencianos nos proporcionan una idea de aquellas lecciones en materia de censos, instituciones jurídicas que estaban en progresivo desuso, como restos últimos del Antiguo Régimen. Con este trabajo se pretende hacer una valoración de cómo tratan esta materia tan compleja de los censos dos manuales: uno ilustrado y el otro liberal. Se esboza la sistemática y las enseñanzas que transmiten.
A Functional Framework for Evaluating Method Engineering Environments: the case of Maestro II/ Decamerone and MetaEdit+
1996
CASE environments with method customisation capabilities and Computer Aided Method Engineering (CAME) environments have emerged during the last few years. While many research papers discuss the principles of method engineering and suggest requirements for new environments, we do not have critical evaluations of CAME environments using a wider method engineering framework. The aims of this study are twofold: 1) to build a preliminary framework for comparative studies of CAME environments, and 2) to increase the knowledge of the ‘state of the art’ in CAME by evaluating two CAME environments. We adapt a functional framework — originally built for CASE technology — to examine the following two …
Effektivit�t pr�klinischer Notfallversorgung Fiktion oder Fakt?
1996
The current increase in the cost of health care must be considered as a severe threat to the prehospital emergency services system. Two examples have been selected--the patient with polytrauma and the patient in cardiac arrest--to demonstrate the dilemma between a need for objective data and the requirements of emergency patients. Study results obtained in trauma patients indicating that total prehospital time, including scene time, is correlated to patient outcome have led to the conclusion that at the scene treatment by emergency physicians may be dispensable. It has, however also been demonstrated that the time required for medical treatment at the scene is equivalent to 20% of the total…
Palliative treatment for advanced gastrointestinal cancer: is response a suitable end-point?
1996
Treatment results of standard chemotherapy in advanced gastrointestinal tract cancer are disappointing. 5-Fluorouracil (FU) is the therapeutic mainstay since its discovery more than 35 years ago. Response rates of single agent FU treatment range between 5 and 20% dependent on dose and schedule. The efforts of the last two decades have been focused on the improvement of objective response rates using several combinations of chemotherapy regimens including doxorubicin, cisplatin, mitomycin and etoposide. Most of the phase l/II studies have reported encouraging treatment results initially with respect to response rates. Subsequent randomized trials, however, revealed a high rate of World Healt…
New point mutation (R243W) in the hormone binding domain of the c‐erbA β1 gene in a family with generalized resistance to thyroid hormone
1996
Two years after the first mutation on exon 7 in the carboxy-terminal part of the hinge domain (D) was reported (Behr and Loos 1992), we have identified the second mutation on exon 7 in patients with GRTH. Interestingly, our mutation it is not located in the two previously described "hot spot regions", but instead very close to the hinge domain (D) of the receptor protein that is essential for the function of the hormone binding domain (E) (Lin et al., 1991). Confirming the observation that the majority of single base substitutions causing human genetic diseases or DNA polymorphisms follow the hot spot mutation rule of CG to TG and CG to CA transition (Barker et al., 1984), an additional CpG…
Prevalence of stroke: A door-to-door survey in three Sicilian municipalities
1996
As part of a door-to-door survey, we screened for stroke among the inhabitants of three Sicilian municipalities (n = 24,496 as of November 1, 1987). Neurologists then investigated those subjects suspected to have had a stroke. Diagnoses of first-ever strokes were based on specified criteria and were reviewed by an adjudication panel. We found 189 subjects who had experienced at least one completed stroke (180 definite, 9 possible); 15 strokes were hemorrhagic, 71 ischemic, and 103 uncertain. The prevalence (cases/100,000) was 771.6 in the total population and 1,893.6 in those aged 40 years or over. The prevalence increased steeply with age, was higher in men between 60 and 79 years, but was…
Heparyny niskocząsteczkowe - budowa, działanie, powikłania, zastosowanie profilaktyczne
1996
La transformació del món agrari: la ciència i la indústria valenciana (1845-1936)
1996
On approximate system dynamic
1996
In this paper concepts and techniques from system theory are used to obtain state-space (Markovian ) models of dynamic economic processes instead of the usual VARMA models. In this respect the concept of state is reviewed as are Hankel norm approximations,and balanced realizations for stochastic models. We clarify some aspects of the balancing method for state space modelling of observed time series. This method may fail to satisfy the so-called positive real condition for stochastic processes. We us a state variance factorization algorithm which does not require us to solve the algebraic Riccati equation. We relate the Aoki-Havenner method to the Arun - Kung method.
Risques naturels et technologiques
1996
Le risque naturel ou technologique n'existe, pour la collectivité, que s' il présente un coût humain et/ou financier. L'information préventive est une obligation légale. Chaque préfet a en charge la constitution d'un dossier d'information et de sensibilisation sur les risques majeurs, naturels ou technologiques, reconnus sur le territoire de son département en collaboration avec les acteurs régionaux réunis au sein d'une cellule d'analyse des risques et d'information préventive (CARIP). La récente parution des dossiers départementaux des risques majeurs (DDRM) offre une vision synthétique des principaux risques. La base de données ainsi constituée fournit un éclairage intéressant sur les ri…
Estimation des modèles dynamiques à erreurs composées avec autocorrélation par la méthode des variables instrumentales
1996
In this paper, we consider a dynamic error-components models with autocorrelated disturbances. We analyse the efficient estimation procedure of autocorrelation parameter and we try to find out whether moment conditions of a dynamic model without autocorrelation are valid when the model includes autocorrelation. We propose two efficient estimation methods of autocorrelation parameter in addition to Baltagi and Li (1994) estimator. We show that all moment conditions of a dynamic model without autocorrelation are not valid in dynamics errors-components models with autocorrelated disturbances.
From imprecise actions to imprecise preference modelling : the case of non orders
1996
This study deals with imprecise preference modelling. It is based on a set of vague actions on which choices are operated by actors whose discriminating power is not precise. Indeed, the information being imprecise, the actors have but limited and relatively indeterminate knowledge of the basis of their preferences. This results in vague preferences the expression of which are the structures of imprecise preference (imprecise non orders) and the particular ones of relatively indeterminate preference (relatively indeterminate non orders). The shift from the former structures to the latter corresponds to a process of preference maturation and decision structuration inspite of an imprecise con…
Crimen de incesto en Alcublas (1489)
1996
El plantel del Estado. La educación física de las mujeres y los niños en la literatura de divulgación médica del siglo XVIII.
1996
Este trabajo analiza la intensa preocupación que la medicina del siglo XVIII desarrolló por modelar los cuerpos al servicio de propósitos poblacionistas y de mecanismos disciplinarios que conllevaban una clara diferenciación de roles e identidades masculinas y femeninas. Se utilizan como fuente para ello los textos médicos de divulgación, testimonio de la intervención creciente de los profesionales de la medicina en las políticas de control social
Benzothiete, a Versatile Reagent in Heterocyclic Syntheses
1996
Bueno, hasta luego: el uso de bueno en conversaciones
1996
En las páginas que siguen presentamos un posible análisis de bueno en su función de marcador del discurso. Este análisis es parte (y a la vez resultado) de un trabajo contrastivo en torno a well/bueno y de otros marcadores del discurso en inglés y en castellano, dado su frecuente uso en la conversación cotidiana. La razón por la que se comparan estos dos marcadores es porque se pensó que podían coincidir en su función en ambos idiomas, y se procedió al análisis para comprobar esta hipótesis. El corpus utilizado no es muy amplio: incluye quince conversaciones relativamente breves1 en las que se han clasificado cincuenta ejemplos del uso de bueno como marcador del discurso; si bien el corpus …
Rehabilitation of degraded land
1996
Contacte lingüístic entre el català i el castellà a la València dels segles XVIII i XIX
1996
Joaquim Martí Mestre studies several phenomena of linguistic contact in the valencian context of 18th and 19th centuries, such as linguistic interference, code switching, code mixing, as well as the problem of the functions, conditions and sphere of use of the languages, Catalan and Castilian in this case, and linguistic attitudes and social values related to each language in contact.
Gestion du criminel et protectorat judiciaire dans la France d'Ancien Régime
1996
Eficacia diferencial de distintos componentes terapéuticos para el tratamiento del trastorno de angustia
1996
Luxación aislada de la articulación radiocubital distal : Un nuevo caso
1996
Se presenta 1 caso de luxación dorsal aislada de la articulación radiocubital distal en un paciente varón de 18 años que sufrió una caída sobre la mano izquierda en posición de pronación del antebrazo. Fue tratado mediante reducción cerrada bajo anestesia local y posterior inmovilización en un yeso braquioantcbraquial con el codo en 90° de flexión y el antebrazo en supinación durante 6 semanas. El resultado tras el tratamiento rehabilitador posterior a la retirada del yeso fue satisfactorio, sin dolor ni alteraciones estéticas ni funcionales en la extremidad. A case of isolated dislocation of the distal radioulnar joint is presented. A 18-yearold man felt on his left hand with the forearm i…