showing 36 of ~574560 from 574555 documents
Lower space bounds for randomized computation
1994
It is a fundamental problem in the randomized computation how to separate different randomized time or randomized space classes (c.f., e.g., [KV87, KV88]). We have separated randomized space classes below log n in [FK94]. Now we have succeeded to separate small randomized time classes for multi-tape 2-way Turing machines. Surprisingly, these “small” bounds are of type n+f(n) with f(n) not exceeding linear functions. This new approach to “sublinear” time complexity is a natural counterpart to sublinear space complexity. The latter was introduced by considering the input tape and the work tape as separate devices and distinguishing between the space used for processing information and the spa…
Factors affecting the UV-Transparency of Molecular Sieves
1994
The optical properties in the UV-region of several types of molecular sieves were studied. The initial onset of absorption around 280 nm which was observed for basically all samles synthesized without special precautions is not due to an early onset of band gap absorption, but might be correlated to the crystal size as well as structural defects within the crystals, e.g. E'-center or peroxy-radical. Using template free synthesis procedures which lead to small crystals containing few defect sites, we were able to synthesize molevular sieves which were almost completely transparent down to 200 nm. Such crystals can become very important in the development of technical luminophores.
Gottes Wort im Kirchenjahr 1995. Lesejahr C - Band 2. Fasten- und Osterzeit
1994
Latvijas Universitāte, 75
1994
Izdevums "Latvijas Universitāte. 75 gadi" ir veltīts Latvijas pirmās nacionālās augstskolas jubilejai. Šajā rakstu krājumā iekļauti apkopojoši pētījumi par akadēmiskās izglītības aizsākumiem Latvijā un Latvijas Universitātes attīstību divu pasaules karu starpposmā. Laikaposmam pēc 1940. gada veltīta Universitātes svarīgāko notikumu hronika, kā arī plaša informācija par Alma Mater fakultāšu un zinātnisko struktūrvienību attīstību pēdējos piecpadsmit gados.
Introduction
1994
Résumé à venir
“Moby-Dick and the Spirit of Revolution”
1994
International audience
Del excentrismo teatral a la teoría a la teoría del montaje: Bertolt Brecht y S.M. Eisenstein
1994
El presente texto pone en relación las poéticas de Bertolt Brecht y Sergei Eisenstein en relación con la teoría del montaje que se impoe en teatro y cine al filode los años 1920-1930. La práctica excéntrica común a muchas vanguardias es interpretada en los dos casos señalados mediante un esfuerzo suplementario por centrar el mensaje ideológico. Sin embargo, la dialéctica entre extrañamiento y centramiento o de atracción y efecto ideológico final, respectivamente, tendrá una función y mecánica también distinta.
Proton-Deuteron Break Up Including Coulomb Effects
1994
The first results of the calculation of proton-deuteron break-up cross sections are presented and compared with experimental data.
Theoretical investigation of the electronic structure of fullerenes
1994
Summary form only given. Research in the growing family of fullerene compounds are in continuous expansion. Much theoretical and experimental effort has been devoted to the study of the electronic properties these carbon cages present. However, although significant work has been done, the purpose of this paper is to provide a detailed theoretical analysis of the electronic properties of several fullerenes. We have calculated the electronic structure of these carbon cages within the valence effective Hamiltonian (VEH) approach. The calculated one-electron energy levels are correlated with experimental UPS spectra. The good correlation between calculated and experimental values shows VEH appr…
Three distinct types of voltage-dependent K+ channels are expressed by Müller (glial) cells of the rabbit retina.
1994
There is ample evidence that retinal radial glial (Müller) cells play a crucial role in retinal ion homeostasis. Nevertheless, data on the particular types of ion channels mediating this function are very rare and incomplete; this holds especially for mammalian Müller cells. Thus, the whole-cell variation of the patch-clamp technique was used to study voltage-dependent currents in Müller cells from adult rabbit retinae. The membrane of Müller cells was almost exclusively permeable to K+ ions, as no significant currents could be evoked in K(+)-free internal and external solutions, external Ba2+ (1 mM) reversibly blocked most membrane currents, and external Cs+ ions (5 mM) blocked all inward …
ASPETTI ENERGETICI DELL'ESTRAZIONE DELL'OLIO D'OLIVA IN IMPIANTI A CICLO CONTINUO
1994
Histoire et Art
1994
Golden age spanish literature
1994
El discurso de la Corona
1994
La celebració de Corts anava acompanyada d’un estricte i fastuós cerimonial. El discurs del monarca en formava part i era l’acte inicial de les sessions celebrades en llocs emblemàtics com la catedral de València, el convent de Santo Domingo o l’església de Sant Mateu. En el discurs s’exposava el motiu de la convocatòria a Corts i les necessitats de la corona i del regne, els problemes polítics interns o de caràcter internacional, i sempre, una petició econòmica.
Measurement of the B0 - anti-B0 mixing using the average electric charge of hadron jets in Z0 decays
1994
From the data recorded with the DELPHI detector at LEP in the years 1991-1992, 46 497 events were selected having a high-momentum muon in hadron jets. A fit to the average electric charge sum of the jets recoiling against a b-quark jet tagged by a high-PT muon results in an average mixing parameter of chiBAR = 0.144 +/- 0.014(stat.)+0.017/-0.011(syst.).
Osteoporosis transitoria de la cadera: revisión de aspectos clínicos y terapéuticos a propósito de un caso
1994
Presentamos el caso de una mujer de 17 años con osteoporosis transitoria de cadera (OTC). La OTC es una enfermedad infrecuente, difícil de etiquetar, que afecta a hombres sanos de mediana edad, y a mujeres en el tercer trimestre del embarzo. Su etiología todavía no está clara. Los principales signos clínicos son dolor en la cadera y cojera. La RM muestra en la cabeza y cuello femoral hipointensidad en las imágenes ponderadas en T1, e hiperintensidad en las imágenes ponderadas en T2. Se acepta que los cambios en la RM se producen por incremento de líquido en la cavidad medular de la cabeza femoral. Es importante el diagnóstico diferencial con otras enfermedades de la cadera. El propósito de …
“The Leisure Class Prison: The Awakening and the Economic Theories ofThornstein Veblen”
1994
International audience
La navegación por el mar territorial, incluidos los estrechos internacionales y las aguas archipelágicas en tiempo de paz
1994
Estudio jurídico de la evolución histórica del régimen de la navegación internacional por el mar territorial, incluidos los estrechos internacionales y las aguas archipelágicas, en tiempo de paz. Tras una breve introducción, analizo el primer intento fallido de codificación internacional de esta materia en la Conferencia de 1930, convocada por la Sociedad de las Naciones. A continuación examino el régimen del paso por los estrechos utilizados para la navegación internacional, con anterioridad a las codificaciones de las Naciones Unidas. En los dos capítulos siguientes, estudio el régimen de la navegación internacional tanto en el Convenio de 1958 sobre el mar territorial y la zona contigua,…
In vitro culture of albedo tissue from fruits of Citrus sinensis cv. Washington Navel: Effect of fruit age and orange juice
1994
SUMMARYCallus from citrus fruit explants has been used to study different aspects of fruit physiology. However, growth responses of callus derived from citrus fruit tissues are not always comparable with those of intact fruit; there are, for example, differences in nutritional requirements. Results with tissues cultivated in vitro seem to depend on a variety of environmental and internal factors. In the present work albedo tissue from fruits of Citrus sinensis cv. Washington Navel of different age has been used as a source of explants. The growth (fresh weight) of the calli was dependent on the age of the fruit from which the explants were taken, as well as on the addition of orange juice t…
Ceļš: Teoloģisks un kultūrvēsturisks žurnāls. Nr.1(45)
1994
Las huellas de Postnovísimos en Fin de Siglo: a propósito de una conflictiva periodización
1994
Alfabetització i ensenyament en Algemesí (1887-1930)
1994
Los títulos primordiales de los pueblos de Indios
1994
Fractura bipolar de clavícula
1994
Se presenta un caso de fractura que afecta a ambos extremos de la clavícula. Fractura tipo II de Neer del fragmento distal y fractura del extremo esternal de la clavícula. Se realizó tratamiento quirúrgico mediante reducción abierta y osteosíntesis con agujas de Kirschner en ambas. El resultado a largo plazo ha sido satisfactorio cosmética y funcionalmente. A case of bipolar fracture affecting both ends of the clavicle is reported. The lesion consisted of a Neer type II fracture at the distal segment and a fracture close to the proximal joint with the sternum. Surgical treatment was carried out by open reduction and Kirschner wire fixation stabilizing both sides. At follow up, clinical and …
A Note on the δ-length of Maximal Subgroups in Finite Soluble Groups
1994
Antibody Pattern of HCV Infection and Hepatocellular Carcinoma in Italy: A Case Control Study
1994
The association of hepatitis C virus (HCV) infection with hepatocellular carcinoma (HCC) and the presence of a specific antibody pattern was assessed by means of a case-control study conducted in Italy on 65 consecutive newly diagnosed HCC cases and 99 sex- and age-matched control patients with chronic nonhepatic disease. The prevalences of antibody to HCV (anti-HCV) and hepatitis B surface antigen (HBsAg) observed were 66.2% and 24.6%, respectively. The relative risk for the association of each of the two markers with HCC, as calculated by multiple logistic analysis, was 26.9 (95% confidence intervals (CI): 9.9–72.5) for anti-HCV and 11.4 (95% CI: 3.1–41.1) for HBsAg. Thus, they constitute…
Formation of protein multilayers and their competitive replacement based on self-assembled biotinylated phospholipids.
1994
Based on specific recognition processes the build-up of protein multilayers was achieved using streptavidin layers as a docking matrix. For this purpose, streptavidin was organized at biotin-containing monolayers, liposomes, and self-assembled layers on gold. Thus, mixed double and triple layers of streptavidin, Con A, Fab fragments, and hormones were prepared and characterized by fluorescence microscopy and plasmon spectroscopy. Using biotin analogues with lower binding constants several cycles of multilayer formation followed by competitive replacement could be achieved.
Teatro español: 1978-1992
1994
Occupational Well‐being among Aging Teachers in Finland
1994
Abstract This article presents an examination of occupational well‐being among teachers in Finland who are over 45‐years of age (n = 1012). Occupational well‐being was described by affective (job anxiety and depression, burnout), behavioral (job competence and aspiration) and health (psychosomatic Symptoms and work ability) components. The structure of well‐being turned out to be two‐dimensional, consisting of affect‐health and behavior dimensions. The level of well‐being among aging teachers was quite high, although 36% of the teachers had Problems of well‐being related to both ajfect‐health and behavior. However, according to the work ability index, only 4% of the 45‐49‐year‐old and 12% o…
Neuromuscular characteristics and fatigue in endurance and sprint athletes during a new anaerobic power test
1994
The purpose of this study was to investigate neuromuscular and energy performance characteristics of anaerobic power and capacity and the development of fatigue. Ten endurance and ten sprint athletes performed a new maximal anaerobic running power test (MARP), which consisted ofn x 20-s runs on a treadmill with 100-s recovery between the runs. Blood lactate concentration [la−]b was measured after each run to determine submaximal and maximal indices of anaerobic power (P 3mmol·1 −1,P5mmol·1 −1,P10mmol·1 −1andP max) which was expressed as the oxygen demand of the runs according to the American College of Sports Medicine equation: the oxygen uptake (ml·kg−1·min−1)=0.2·velocity (m·min−1) +0.9·s…
Epigońskie uwikłania regionalizmu na Górnym Śląsku
1994
Análisis y desarrollo de un protocolo de atención ambulatoria a personas toxicómanas
1994
Contiene 1. Objetivos asistenciales del centro de atención ambulatoria del programa municipal de drogodependencias del Ayuntamiento de Valencia. 2. Algunas consideraciones acerca de un modelo psicoterapéutico. 3. Puesta en marcha del protocolo.