showing 36 of ~574560 from 574555 documents
El establecimiento permanente en la imposición societaria desde el punto de vista tributario internacional el ordenamiento español como modelo
1994
Famille et société : l'exemple de Rouen au XVe siècle
1994
International audience
Occurrence of three different binding sites forBacillus thuringiensisδ-endotoxins in the midgut brush border membrane of the potato tuber moth,phthor…
1994
The potato tuber moth is susceptible to at least three insecticidal crystal proteins (ICPs) from Bacillus thuringiensis: CrylA(b), CrylB, and CrylC. To design useful combinations of toxin genes either in transgenic plants or in new genetically modified B. thuringiensis strains, it is necessary to determine the binding characteristics of the different ICPs so as not to combine a pair sharing the same binding site. This has been accomplished using two different techniques: 125I-labeling of the ICPs with further measurement of the radioactivity bound to brush border membrane vesicles, and microscopic visualization of the bound ICPs by enzyme-linked reagents such as antibodies or streptavidin u…
Study on the sensitive and selective adsorption voltammetry of vanadium with antipyrylazo III (APA III)
1994
The sensitive and selective adsorption voltammetric determination of the vanadium(V)-antipyrylazoIII complex in HAc-NaAc solution is investigated. The V-complex is strongly adsorbed onto a stationary Hg-electrode and is reduced at a potential more negative than that corresponding to the reduction of its ligand. The conditions for determining vanadium are investigated and the mechanism of the reduction peak of the vanadium complex is discussed, as also the influence of foreign ions on the determination of vanadium. An at least 20-fold excess of foreign ions does not cause any interference. The detection limit is 4×10−10 mol/l V with 3 min enrichment time.
Spatial, seasonal and long-term variability of phytoplankton photosynthesis in lakes
1994
Tensor and Vector Analyzing Powers in the Reaction 2H(e,e’p)
1994
The first experiment to be performed an the internal target facility of NIKHEF-K will be a study of eleclron-induced quasi-elastic proton knock-out from tensor-polarized deuterium. Here, we present the first results from the experimental tests as well as the results of a Monte Carlo simulation, which show the feasibility of the proposed experiment, even at modest luminosities.
Kira Gałczyńska: Konstanty Ildefons Gałczyński - Kriegsgefangener 5700, Centralne Muzeum Jeńców Wojennych w Łambinowicach-Opolu, Opole 1993, 59 s
1994
Las pirañas
1994
Small-Angle Scattering from Phase-Separated Metallic Alloys: From Experiment to Phase Diagrams
1994
In this paper, phase-separated metallic alloys are described in terms of concentration fluctuations. As a consequence, Small Angle Scattering equations which allow to calculate the entire scattering curve by incorporating particle-particle interference effects on the basis of the Percus-Yevick formalism, are obtained. It is shown that, for Aluminium-Lithium alloys, satisfactory fits of the experimental data can be obtained if it is assumed that Li rich elliptical monodisperse precipitate particles approach each other at average distances which are larger than the sum of the hard-sphere particle radii. It is also shown that a possible ambiguity of this model, within the Percus-Yevick formali…
Characterization of the prejunctional muscarinic receptors mediating inhibition of evoked release of endogenous noradrenaline in rabbit isolated vas …
1994
The aim of the present study was to characterize the prejunctional modulation of evoked release of endogenous noradrenaline in rabbit vas deferens by the use of muscarinic receptor agonists and subtype-preferring antagonists. Vasa deferentia of the rabbit were stimulated electrically by trains of 120 pulses delivered at 4 Hz or trains of 30 pulses at 1 Hz. The inhibition by muscarinic agonists of the stimulation-evoked overflow of endogenous noradrenaline in the absence and presence of antagonists was used to determine affinity constants for antagonists. These values were compared with those observed at putative M1 receptors inhibiting neurogenic twitch contractions in the rabbit vas defere…
GFAAS determination of selenium in infant formulas using a microwave digestion method.
1994
A method for determining the selenium content of infant formulas is proposed. It includes wet digestion with nitric acid and hydrogen peroxide in medium pressure teflon bombs in a microwave oven and determination by graphite furnace atomic absorption spectrometry (GFAAS). The absence of interferences is checked. Values obtained for the limit of detection (19.4 ng/g), precision (RSD = 2.2%) and accuracy by analysis of a reference material show that the method is reliable.
Kalastuksen taloustiede - teorian kehittymisestä 1950-luvulta 1990-luvulle : mallien soveltaminen Itämeren lohenkalastukseen
1994
Del estado de gracia al de bonsai
1994
TRATTAMENTO CHIRURGICO DEL NEUROBLASTOMA IV-s
1994
Nella casistica del Gruppo Cooperativo Italiano per il Neuroblastoma sono racolti dal 1976 al 1992 91 casi di NBstadio IV-s. Viene analizzata l'influenza della chirurgia del tumore primitivo sull'outcome di questi pazienti.
El suministro de recursos abióticos: breve revisión del panorama documental
1994
L'insécurité des personnes au 18e siècle
1994
National audience
Aloinjertos y autoinjertos de ligamento cruzado anterior de la rodilla: estudio experimental en el perro
1994
Hemos realizado un trabajo de cirugía experimental en perros, en el que comparamos el comportamiento de los autoinjertos frescos de ligamento cruzado anterior de la rodilla (LCA), con lo aloinjertos crioconservados. Con la ayuda de una guía y trefinas, se extrae el LCA con sus inserciones, unido a un taco óseo en cada extremo. Los autoinjertos se reimplantan tras unos minutos en suero fisiológico. Los aloinjertos son sometidos a congelación y, almacenamiento a —80 °C y descongelación rápida, antes de su implantación. Se realiza una fijación de los tacos óseos con tornillos de esponjosa de 6,5 mm, lo que nos permite prescindir de la inmovilización. Los animales se sacrifican a las 3, 6, 12, …
Archéologie et ingénierie : mode d'emploi
1994
International audience
A new method to measure the wavelength of single-mode pulsed lasers with a scanning Michelson interferometer
1994
We report on the possibility to measure the wave-lengths of pulsed single-mode lasers by means of a two-beam Michelson interferometer in motion [1,2]. The corner reflector moves with a nearly constant speed creating a path differenceL so thatL/C ≪ 1/Δν, Δν being the spectral width of the laser to be measured. The reference laser is a stabilized He-Ne (Spectra-Physics, model 117 A) to a precision of the order of two parts in 109. The fringe pattern of the two beams (reference beam and measured beam) is sampled simultaneously with a repetition rate of 40 ms. With this new method, the frequency doubled injection-seeded Nd: YAG laser wavelength has been measured with an accuracy of the order of…
Catálogo del fondo Sánchez-Quintanar
1994
El catálogo de 1896 y la primitiva ubicación del legado en la biblioteca de la Facultad de Medicina, en la calle de Guillén de Castro. El traslado de la biblioteca de la Facultad de Medicina al nuevo edificio del Paseo de Valencia al Mar. Sus locales y ordenación. El catálogo actual. Trabajo realizado. Estudio estadístico. Notas. Abreviaturas. Repertorios consultados. Catálogo del Fondo Sánchez-Quintanar: Libros y folletos; Publicaciones periódicas; Índice de colaboradores, comentaristas, directores, editores, ilustradores, prologuistas, recopiladores y traductores; Índice de editores e impresores por países y ciudades; Índice de idiomas; Índice de siglos de impresión; índice de materias. /…
Sulla sindacabilità dell’atto amministrativo da parte del Giudice Penale
1994
Etude de la cooperation entre Geotrichum candidum et Penicillum camemberti : impact sur le profil aromatique et sur les qualites organoleptiques d'un…
1994
*INRA Unite Regionale de Documentation B.V. 1540 21034 Dijon Cedex Diffusion du document : INRA Unite Regionale de Documentation B.V. 1540 21034 Dijon Cedex Diplôme : Dr. Ing.
Profilaxis de los puentes óseos fisarios mediante interposición de injerto autólogo de periostio. Estudio experimental en conejos
1994
Se ha realizado un trabajo experimental sobre la profilaxis de los puentes óseos epifisometafisarios mediante la interposición de injerto autólogo de periostio, planteando los siguientes objetivos: 1) Conseguir una barrera epifisometafisaria que impida la comunicación de los vasos epifisarios y metafisarios y 2) Estudiar la capacidad condrogénica del periostio. Se han utilizado 48 conejos, distribuidos en dos Series de cuatro Grupos cada una, según el momento del sacrificio a la 1a, 2a, 4a y 8a semanas. En la serie Control, se procedió a la extirpación de 1/3 de la fisis distal externa, mientras que en la Experimental se interpuso un injerto Ubre de periostio. Todos los especímenes se estud…
Inscripciones latinas, ibéricas y hebreas en un manuscrito del Archivo Histórico Nacional (Sección Estado, legajo 2921)
1994
Study on the solid-state production of a thermostable alpha-L-arabinofuranosidase of Thermoascus aurantiacus on sugar beet pulp
1994
International audience
Unemployment and health in Spain
1994
We present the results of a study on the association between unemployment and health and the use of health services, exploring the influence of the socio-economic environment on these relationships. With this aim, data from the Spanish National Health Survey (SNHS) were used. Health was measured by subjective health status, presence of chronic illnesses and psychological symptoms. The use of health services was measured by drug consumption (over the counter and/or prescribed drugs), doctor consultation, hospital admission and casualty attendance. A total of 13,344 individuals aged between 16 and 65 years were included. Results were analysed for all of Spain and for 3 regions with different …
Ficta versus possibilia
1994
Rotura bilateral espontánea del tendón rotuliano asociado a Lupus Eritematoso Sistémico
1994
La rotura bilateral simultánea y espontánea del tendón rotuliano es un hecho poco frecuente, que suele asociarse a enfermedad sistémica y corticoterapia de larga duración. Presentamos el caso de una paciente de 28 años diagnosticada de lupus eritematoso sistémico, recibiendo tratamiento con corticoides durante 10 años. Sufrió de forma espontánea rotura de ambos tendones rotulianos. Se efectuó la reparación quirúrgica de ambos tendones mediante sutura directa apoyada con puntos transóseos y plastia de fascia lata. Se mantuvieron las rodillas inmovilizadas en extensión durante 55 días, comenzando posteriormente la rehabilitación. A los 3 meses de intervención alcanzó los 90 ° de flexión y la …
La crítica de la razón teológica y el destino trágico de Galileo
1994
Frente a las interpretaciones que explican la condena del copernicanlsmo en 1616 como el resultado de la conspiración dé una trama florentina o de una disputa cosmológica, defendemos en este trabajo que lo que otorga su lógica a este primer acto de la tragedia de Galileo es el desafío que para la primacía de la teo logía en el sistema de las ciencias suponía su nueva concepción matemática· de la filosofía. lejos de aceptar la reducción escolástica de ésta a «ancilla theologiae», Galileo defendía la supeditación par cial de la teología a la filosofía natural y la absoluta independencia de ésta, y probablemente también de la filosofía moral, con respecto a aquélla.
Urbanisme i habitatge ibèrics al País Valencià
1994
Iberian Iron Age urbanism and household
Charles de Bourgogne " , et " Jacques de Bourbon
1994
International audience
Frontera político-lingüística i fissures internes de l'àrea lingüística catalana
1994
Frequency of Twin Pregnancies Following Renal Transplantation
1994
Objective: To evaluate the incidence of twin pregnancy among renal-transplanted women.Methods: A retrospective review based on three national inquiries. A computer literature search of the Medline system was done. Only reports of series were included. For statistical analysis the probability of having a twin pregnancy was assumed to be 0.012.Main Outcome Measures: Incidence of twin pregnancy in women after renal transplantation.Results: There were 7 sets of twins among 153 pregnancies reported in the national inquiry group (4.57%). Thus, the overall incidence of twin pregnancy in these women was 1 in 22 pregnancies. The frequency of twinning in series reporting pregnancies after renal trans…
Factored arrangements of hyperplanes
1994
Las personas y su identidad
1994
sanfelix@uv.es