Vinblastine-induced autophagocytosis in cultured fibroblasts

1991

1. Balb/c 3T3 fibroblasts were incubated in a medium containing 10(-5) M vinblastine for 1, 2 and 3 hr. Morphometric analyses were performed after an incubation period of 2 hr. 2. The volume fraction of advanced autophagic vacuoles increased tenfold (P less than 0.05) concomitantly with a sixfold decrease in round lysosomes (P less than 0.01). 3. The volume fractions of pleomorphic lysosomes, nascent autophagic vacuoles and residual bodies did not differ significantly from the control values. 4. In many cells, advanced autophagic vacuoles resembled multivesicular bodies, which may indicate that the type of autophagocytosis occurring in cultured fibroblasts is microautophagy.

Il Manzoni nell'opera teorica e critica di Umberto Barbaro

1991

Escacs d'amor: una obertura al joc A Sol Post, 2: 45-74

1991

El poema colectivo valenciano de 1497 “Escacs d’Amor”, además de un gran interés literario presenta la singularidad de contener la primera partida de ajedrez con las reglas modernas. La obra es un poema alegórico que describe una imaginaria partida entre el dios Marte y la diosa Venus. Mercurio actúa de árbitro de la contienda amorosa, que acaba con el "mate" al amor de Venus. El poema tiene importancia para la historia del ajedrez porque las damas se mueven como en el juego actual. Nuestro trabajo analiza estos aspectos. La datación de la obra, en la Valencia de el fin de la decimoquinta centuria, en una encrucijada histórica, en un momento de transición entre dos formas diversas pero cont…

Regionäre Lymphknotenmetastasen maligner Kopf-Hals-Tumoren:

1991

Sonography and computed tomography are used in staging of lymph nodes of patients with head and neck cancer. The accuracy of sonography (90%) and computed tomography (85%) is comparable or better than the palpatory accuracy (85%). The better delineation of reactive swollen cervical nodes leads to a higher sensitivity of sonography (90%) and computed tomography (84%) versus palpation (74%), but a lower specifity (palpation 94%, sonography 90%, computed tomography 86%). A literature survey shows that sonography, computed tomography and magnetic resonance imaging of cervical lymph nodes are comparable good methods.

Existence and Regularity of Solutions of Cauchy Problems for Inhomogeneous Wave Equations with Interaction

1991

The main aim of this paper is a nonrecursive formula for the compatibility conditions ensuring the regularity of solutions of abstract inhomogeneous linear wave equations, which we derive using the theory of T. Kato [11]. We apply it to interaction problems for wave equations (cf. [3]), generalizing regularity results of Lions-Magenes [12].

Protein interactions with ordered lipid films: Specific and unspecific binding

1991

Simultaneous application of Fourier transform Raman spectroscopy and differential scanning colorimetry for the in situ investigation of phase transit…

1991

Abstract The combination of Fourier transform Raman spectroscopy with differential scanning colorimetry for the in situ investigation of phase transitions is illustrated using ammonium nitrate as an example. This method helps unambiguous characterisation of different phases by providing a simultaneous probe of thermodynamic and vibrational data.

Nuclear magnetic resonance spectroscopy of phosphorus in Becker's dystrophy

1991

Richard Wollheim: historia y ruptura en arte [Entrevista]

1991

Entrevista a Richard Wollheim

Fractura-avulsión de la tuberosidad tibial anterior en adolescentes: a propósito de dos casos. Revisión de la literatura

1991

La avulsión de la tuberosidad tibial anterior es una lesión rara que se caracteriza por ocurrir en adolescentes deportistas. Esta lesión ocurre en un período vulnerable de la adolescencia, cuando la fisis sufre cambios fisiológicos que debilitan su resistencia a las fuerzas de tensión. Aportamos dos nuevos casos que fueron tratados con dos métodos distintos de osteosíntesis (tornillos y agujas de Kirschner) y realizamos una completa revisión bibliográfica. La osteosíntesis proporciona una mayor seguridad y menor tiempo de inmovilización, siendo el resultado final la epifisiodesis de dicha tuberosidad. Reseñamos la aparición de calcificaciones asintomáticas en el tendón rotuliano, complicaci…

Epsilon-Type contribution to baryon asymmetry from colored higgs triplets

1991

In scenarios where the cosmological baryon asymmetry is generated in the decay of heavy colored Higgs triplets at the one-loop level (at least two triplets are needed), it is shown that in addition to the conventional triangle loop (ε'-type effect), a new kind of diagram must be considered. This new type of diagram has its origin in the mixing of the two Higgs fields (ε-type effect). The mixing of the two Higgs fields violates CP provided they have at least two common decay channels. For small mixing angles, the new contribution can be bigger than the conventional one.

Sintomatología psicológica post-secuestro.

1991

El artículo describe los problemas psicológicos relativos al denominado Síndrome de Estocolmo, así como los aspectos clínicos y socio-familiares suscitados en víctimas de secuestro perpetrados por bandas armadas.

Parallel finite element splitting-up method for parabolic problems

1991

An efficient method for solving parabolic systems is presented. The proposed method is based on the splitting-up principle in which the problem is reduced to a series of independent 1D problems. This enables it to be used with parallel processors. We can solve multidimensional problems by applying only the 1D method and consequently avoid the difficulties in constructing a finite element space for multidimensional problems. The method is suitable for general domains as well as rectangular domains. Every 1D subproblem is solved by applying cubic B-splines. Several numerical examples are presented.

Słownik biograficzny katolicyzmu społecznego w Polsce: A-J

1991

Effects of Neuromuscular Blocking Agents on Neuronal Nicotine Receptors of Motor Nerves: Blockade of Nicotinic Autofacilitation and Backfiring

1991

ABSTRACT Tubocurarine reduced (60%) [3H]acetylcholine release from the isolated rat phrenic nerve at concentrations of 1 or 10 μM, but blocked backfiring of the phrenic nerve occuring after partial blockade of cholinesterase already at a concentration of 100 nM. The distinct potency of tubocurarine suggests differences between the presynaptic nicotine receptors mediating autofacilitation of release and preterminal nicotine receptors mediating backfiring of the motor nerve or a low agonist concentration at the latter receptors. The new neuromuscular blocking agents atracurium, pancuronium and vecuronium less effectively reduced [3H]acetylcholine release than tubocurarine indicating a lower a…

Structural Characterization of Monolayers at the air-water interface

1991

PTCA of the left main stem following protective coronary artery bypass grafting.

1991

Percutaneous transluminal coronary angioplasty (PTCA) was performed in 14 patients with significant left main stem stenosis following protective coronary artery bypass grafting (CABG). The procedure was successful in 13/14 patients (93%), achieving a decrease in mean diameter stenosis from 74% +/- 7% to 31% +/- 12% (P less than 0.01). Accordingly, the absolute stenosis diameter increased from 0.9 mm +/- 0.3 mm to 2.4 mm +/- 0.5 mm (P less than 0.01). Dissection of the left main stem artery and a transient significant fall of blood pressure each occurred in one patient. No other serious complications were noted. Eight of 13 patients (62%) with successful PTCA underwent control angiography. R…

Capsidiol and ethylene production by tobacco cells in response to cryptogein, an elicitor from Phytophthora cryptogea

1991

International audience

Un aspecto de la delincuencia común en la Valencia pre-agermanada: la "prostitución clandestina" (1479-1518)

1991

En las postrimerías del Cuatrocientos Valencia era una de las plazas mercantiles más importantes del Mediterráneo. La ciudad ya gozaba en aquellos tiempos de un bien merecido renombre como emporio cosmopolita y galante. Esta «fisonomía gentil» que hizo las delicias de tanto visitante foráneo no era, precisamente, el orgullo de los valencianos, sobrecogidos, día a día, ante la sordidez de la prostitución urbana. Es más, no hubiera faltado razón a los naturales en responsabilizar del auge que durante aquellos años experimentaba la prostitución en Valencia al interminable desfile de una «población flotante» constituida por vagabundos, buhoneros, marinos, trajineros, comerciantes modestos y gra…

Solving coupled Riccati matrix differential systems

1991

Abstract We start by noting that coupled Riccati matrix differential systems appearing in differential games may be considered as a single rectangular Riccati equation. An explicit solution of the coupled differential system in terms of a solution of the associated algebraic Riccati equation is given.

Jacqueries

1991

La resistència camperola en el marc de la senyoria valenciana: el cas d'Onda al segle XV

1991

Dentro del marco general de las oposiciones de clase señores/campesinos en el mundo rural feudal, su individualización toma las formas más diversas según el contexto estructural en que tienen lugar. Este estudio está dedicado a analizar el tipo de comporta­ miento de los vecinos de una villa rural de tamaño mediano de la Plana de Castelló, como era el caso de Onda a inicios del siglo XV, ante las presiones que recibía de su señor, la Orden de Montesa, todo ello en el marco de un período de reacción señorial ante la caida de sus rentas. Las latentes contradicciones en las relaciones sociales del sistema feudal estallaron bastante claramente desde finales del siglo XIV, dando paso a un primer…

Introductory Remarks: Population Biology, the Scientific Interface to Species Conservation

1991

Species conservation is one of the most challenging problems of present biological research. The scientific discipline “population biology” covers — with its methods and theoretical background — a large proportion of the tasks which are necessary to make proposals for practical conservation projects.

An Appraisal by M.I.P of the Changes Induced in the Microstructure of Complex Sulfide Ores by Reactive Thermal Treatments in H2 and N2

1991

Summary Changes in the microstructure of complex sulfide ores resulting from reactive thermal treatments in either H2 or N2 were investigated qualitatively by combined scanning electron microscopy and X ray microanalysis, and quantitatively by mercury intrusion porosimetry (MIP) and mercury pycnometry. With increasing treatment temperature, we successively observed: 1) the development of fractures, preferentially at interfaces between the various mineral components, 2) the development of meso and macropores and the simultaneous swelling of the solids and 3) the crystallization or recrystallization of the metal or sufide phase products. In all cases the specific pore volume and mean pore dia…

Applicazione di nuove metodiche di tipizzazione allo studio di stipiti batterici responsabili di infezioni ospedaliere.

1991

Environmental cadmium, lead and nickel contamination: possible relationship between soil and vegetable content

1991

The cadmium, lead and nickel content of soils of four agricultural areas exposed to different degrees of environmental pollution and vegetables grown there were measured by Atomic Absorption Spectrophotometry (AAS). In order to ascertain the possible relationship between the heavy metal content of soils (total and extractable) and of vegetables grown in them, the correlation between the two was calculated. The highest correlation values between metal content of soil and vegetables are these corresponding to nickel: the total metal content in soils and leaves-stems are linear (p<0.01). The extractable metal content of soils and leaves-stems are linear (p<0.1). Therefore, soil seems to be the…

Enquête sur les bâtiments industriels cisterciens : l'exemple de Preuilly

1991

Cailleaux Denis. Enquête sur les bâtiments industriels cisterciens, l'exemple de Preuilly. In: Bulletin de la Société Nationale des Antiquaires de France, 1991, 1993. pp. 151-164.

Professionalization as Status Adaptation: The Nobility, the Bureaucracy, and the Modernization of the Legal Profession in Finland

1991

In contrast to Anglo-American lines of professional development, the central agent of professionalization in many Continental countries was the state bureaucracy. However, this article proposes that an understanding of the class structure of traditional society is also needed to explain the privileged position of lawyers. An historical study of lawyers in the 19th century, after Finland was annexed by Russia, demonstrates that the legal profession provided the nobility an important medium of adaptation to the new society. The importance of the legal profession initially to the state bureaucracy, and subsequently to the nobility, explains its social prominence and its future development. An …

L’Agenda Culturel Européen: Prologue

1991

La protección del tercero en materia de aguas tras la ley de aguas de 1985

1991

Nueva pieza de arte mueble Paleolítico en la provincia de Castellón

1991

Hidatidosis ósea: nuestra casuística

1991

Se revisan los resultados de 16 casos de hidatidosis musculoesquelética tratados en la Unidad de Sépticos del Aparato Locomotor del Hospital Universitario "La Fe" de Valencia en el período 1972-1989. Las dificultades diagnósticas fueron importantes, siendo en 5 de los casos un diagnóstico operatorio. Analizados los métodos de tratamiento se llega a la conclusión de que la curación definitiva sólo se consigue con la resección completa y amplia de la lesión. Los curetajes, acompañados o no de aseptizaciones químicas, suelen dar recidivas. Se recomienda combinar el tratamiento médico con el quirúrgico. The results of 16 cases of musculoskeletal hydatidosis treated in the locomotive Apparatus S…

Roturas agudas de L.C.A. de la rodilla: refuerzo con cordón RD.S

1991

Se presenta la técnica de reconstrucción en las roturas agudas del L.C.A. mediante reparación con cordón de P.D.S., así como los criterios seguidos por los autores ante las roturas agudas de dicho ligamento. Expone una casuística de 24 intervenciones, con un seguimiento de 1.5 años, sin haber encontrado complicaciones destacables y con un 75% de Muy Buenos Resultados y un 25% de Buenos Resultados. The technique used in the repair of acute rupture of the ACL with a band of PDS, together with the criteria followed by our department in such cases both acute are decribed. The describe 24 operations performed by them, with a follow-up of 1.5 years, with no major complications, 75% excellent resu…

A Random Field Approach to Transect Counts of Wildlife Populations

1991

Line transect counting of a wildlife population is considered a sampling from a planar marked point process, where the marks describe the detectability of the animals. Sampling properties of transect counts and a new density estimator are derived from a counting process, which is a shot-noise field induced by the marked point process. A general formula for the sampling variance of a transect is derived and applied to compare five common types of transects. Some stereological connections of transect sampling and density estimators are shown.

Phosphonomethyl Substituted Phenols a New Class of Absorbers and Extractants for Metals

1991

Phosphonomethyl substituted phenols are readily obtained from o-hydroxymethylated phenols and trialkyl phosphites. The free acids, incorporated into phenol formaldehyde resins, act as cation exchangers with remarkable selectivity for different metals.

Incremental termination proofs and the length of derivations

1991

Incremental termination proofs, a concept similar to termination proofs by quasi-commuting orderings, are investigated. In particular, we show how an incremental termination proof for a term rewriting system T can be used to derive upper bounds on the length of derivations in T. A number of examples show that our results can be applied to yield (sharp) low-degree polynomial complexity bounds.