El estilo cognitivo reflexividad-impulsividad : su modificabilidad en la práctica educativa, un programa de intervención para 8º de EGB

1988

Is ERCP manometry useful in the choice of treatment of stones of the common bile duct?

1988

To verify the appropriateness of sphincterotomy as the treatment of choice of choledocholithiasis, since 1980 we have been using endoscopic retrograde cholangiopancreatographic (ERCP) manometry of the sphincter of Oddi (SO). This method allows direct investigation of SO motor activity and provides useful information regarding the presence of benign papillary stenosis (BPS). Thirty-four patients were investigated because the radiological examination indicated BPS might be present. Of these, 20 had common bile duct (CBD) stones, while the remaining 14 presented with biliarylike pain and one or more of the following: CBD dilation (larger than 12 mm); emptying of the ERCP contrast medium took l…

Kaunis ja ruma Noitaympyrässä : Pentti Haanpään estetiikkaa

1988

This paper deals with the aesthetic modifications of the beautiful and the ugly as embodied in Pentti Haanpää's (1905-1955) novel Noitaympyrä, written as early as the 1930's, but published only posthumously because of its political sensitivity. Pentti Haanpää has often been considered merely a naturalistic social critic, yet even in his works aesthetic modifications appear as a significant element. Haanpää definitely has his own aesthetic. The method applied in this paper is close textual analysis. Although the autobiographical origin of Haanpää's natural aesthetic values is evident, the biographical approach does not account for his aesthetic to a remarkable degree. The purpose given to be…

E=mc2, la ecuación más famosa de la física: una incomprendida

1988

Si alguien se toma la molestia de estudiar qué ecuaciones han aparecido más a menudo en la prensa -tanto en las revistas de divulgación cientí-fica o de información general como en los diarios-no hay duda que encontrará, como ha señalado Resnick ( 1980) que la ecuación más conocida de la Física es la famosa E=mc2. En efecto, tanto si se habla del peligro nuclear como de la ciencia contemporánea o del mismo futuro de la humanidad, es bastante probable que se haga referencia a esta ecuación. Este esfuerzo de difusión, obviamente, parece legítimo y no tendría por qué preocuparnos, si no fuese porque la interpretación que a menudo se le da es totalmente incorrecta, deformando la imagen actual d…

An immunohistochemical and biochemical study of cytokeratin polypeptides in a non-Paget type adenocarcinoma of the vulva

1988

SummaryThe intermediate filament composition was studied in a malignant neoplasm of the vulva in a 42 year old patient. The absence of vimentin excluded the diagnosis of malignant melanoma. Anaplastic squamous cell carcinoma could be excluded by the presence of glandular type cytokeratins numbers 7, 8, 18, 19 in the neoplastic cells. Intermediate filament typing did not support a diagnosis of epithelioid sarcoma. Since the typical epidermal involvement by tumour cells was lacking, Paget's disease was excluded. Metastatic adenocarcinoma was excluded by the lack of relevant clinical findings. It was concluded that the lesion represented an adenocarcinoma of the vulva of the non-Paget type mos…

Enclavijamiento intramedular con cerrojo : método de Kempf y Grosse

1988

Fifteen femoral shaft fractures treated with interlocking nailing · Kempf and Grosse's technique are collected. This procedure is suitable for some femoral fractures which could not be treated with the usual Küntscher's method. The biomechanical conditions of Kempf's system improved the results: the fixation is solid and stable.

Modelle für Inzidenzschätzungen bei einer Bevölkerung mit stark variierender Altersstruktur - dargestellt am Beispiel des Registers für Malignome im …

1988

Am Institut fur Medizinische Statistik und Dokumentation der Universitat Mainz wird seit 1980 ein Register fur Malignome im Kindesalter gefuhrt, in dem alle vor dem 15. Lebensjahr auftretenden bosartigen Erkrankungen aus der Bundesrepublik erfast werden (1,2). Infolge der ausgesprochen guten Kooperation innerhalb der padiatrischen Onkologie, die sich unter anderem mit der Durchfuhrung von 15 multizentrischen Therapiestudien belegen last, ist es gelungen, eine nahezu flachendeckende Erfassung zu realisieren. Neben dem Ziel, ein kliniksorientiertes Register zu schaffen, konnte auch ein bevolkerungsbezogenes epidemiologisches Krebsregister aufgebaut werden, das es ermoglicht, deskriptive und a…

Protagonista el tren [Presentación]

1988

El presente texto recorre el motivo del tren a lo largo de algunos momentos clave de la historia del cine. Instrumento de la modernidad y de la técnica, el ferrocarril ha sido excusa para arbitrar mecanismos narrativos, amén de un irrenunciable icono de muchos films.

La volatilite des esters d'herbicides hormonaux

1988

National audience

A study of dimethyltin(IV)-L-cysteinate in aqueous solution

1988

The in vivo activity of some R2Sn-L-cysteinate complexes (R = Me, Et, n-Bu) against murine P-388 leukaemia has been tested. Only the Et2Sn(IV) complex showed a marginal positive effect. Trigonal bipyramidal tin environments with two carbon (R) atoms and the sulfur atom in the equatorial plane and oxygen (carboxylate) and nitrogen (NH2) in apical positions have been proposed for the solid compexes (R = Me, Et, n-Bu, Ph) on the basis of experimental Mossbauer parameters and infrared (IR) data. Aqueous solutions of the Me2SnL-cysteinate have been studied by IR, 1H NMR and 119Sn Mossbauer spectroscopy (in frozen solution) at different pH values to identify the Me2Sn(IV) species present. At pH >…

Zvaigžņotā Debess: 1988, Pavasaris (119) - 1988/89 Ziema (122)

1988

Integración de autoinjertos de esponjosa con el uso del sistema adhesivo de fibrina : estudio experimental

1988

Se efectúa un estudio experimental, utilizando como animal el conejo, con la intencionalidad de aportar datos acerca de si el «Sistema adhesivo de fibrina» activa la incorporación de injertos de esponjosa en el fémur del citado animal. Los estudios efectuados se han realizado mediante microscopía óptica, utilizándose técnicas de rutina histológica y confirmando el hecho de que el uso del citado sistema actúa favoreciendo la integración de los injertos de esponjosa, en el lecho labrado en el hueso con mínima reabsorción y pérdida de los mismos.

Ćwiczenia z technologii chemicznej w chemicznych zakładach przemysłowych

1988

Characterization of the metastatic properties of two methylcholantrene-induced fibrosarcoma in mice

1988

MC1 and MC2 murine fibrosarcomas, following intramuscular innplantation in mice, release different numbers of tumor cells into the bloodstream and differ in their lung colonization potential following intravenous inoculation. Since these biological properties could be related to a different degree of maligancy, in vivo and in vitro experiments were performed vvith these two tunnors in an attempt to correlate their spontaneous metas-tatic potential with other parameters related to tunnor cell invasion and metastasis. Following intramuscular inplantation the MC2 fibrosarcoma was observed to have a slow but progressive ability to spontaneously metastasize while the MC1 lacked this capability. …

La fundamentación de la razón práctica en la escuela de Erlangen

1988

Ha sido la tradición dialéctica la que ha defendido que sobre los juicios de valor cabe la discusión racional hasta el final. Si esto es dialéctica, el autor de Methodisches Denken no puede ser positivista, es “dialéctico”. En uno de los artículos recogido en Methodisches Denken resaltan las ideas de comprender, asegurarnos del sentido de un formalismo, y justificar, el término medio es construir, porque parece que las reglas de justificación también tiene que ser construidas. Entendemos construyendo y construyendo nos aseguramos también, construyéndolas, de las reglas para decidir sobre la corrección de lo construido. El constructivismo quiere ser un método, sólo un método, para guiarnos e…

Los años 70 en Valencia. La consolidación de estéticas y lenguajes individuales

1988

El tema surge con la necesidad de analizar las transformaciones estéticas y diferentes lenguajes plásticos en el arte realizado en Valencia. Analizaremos nueve artistas jóvenes: pintores (Jordi Teixidor, Soledad Sevilla, Carmen Calvo, R. Ramírez Blanco), escultores (Miquel Navarro, Joan Cardells, Ángeles Marco) y artistas iner-media (José María Yturralde y el grupo Poético).

Estudio experimental del síndrome alcoholico fetal : alteraciones en el desarrollo de hepatocitos, y de astrocitos en cultivo primario

1988

Neuromuscular and hormonal responses in elite athletes to two successive strength training sessions in one day

1988

Acute neuromuscular and endocrine adaptations to weight-lifting were investigated during two successive high intensity training sessions in the same day. Both the morning (I) (from 9.00 to 11.00 hours) and the afternoon (II) (from 15.00 hours to 17.00 hours) training sessions resulted in decreases in maximal isometric strength (p less than 0.01 and less than 0.05), shifts (worsening) in the force-time curve in the absolute scale (p less than 0.05 and ns.) and in decreases in the maximal integrated EMG (p less than 0.01 and less than 0.05) of the selected leg extensor muscles. Increases in serum total (p less than 0.05) and free testosterone (p less than 0.01) and in cortisol (p less than 0.…

Sequestro «omittendae possessionis causa»

1988

Laser — Klinische Anwendung

1988

Der Neodym-YAG-Laser mit einer Emissionswellenlange von 1,06 μm besitzt eine hohe Penetrationstiefe ins Gewebe von ca. 5 mm mit einem homogenen Koagulationssaum. Bereits 1973 wurden von Mussiggang u. Mitarb. [3] Hautschnitte und Resektionen an Nieren, Leber und Milz im Tierversuch durchgefuhrt, die jedoch offensichtlich wegen der damals zur Verfugung stehenden Laserleistung von nur ca. 50 Watt nicht uberzeugend verliefen. Nach dem nunmehr der Neodym-YAG-Laser in der Urologie (insbesondere in der Behandlung des Blasentumorleidens und bei pathologischen Veranderungen am auseren Genitale) und anderen Fachdisziplinen nach Verbesserung des Instrumentariums und einer hoheren Leistung bei zahlreic…

Cost Analysis of FMS Throughput

1988

Abstract The need for an effective cost planning and control system is stressed in today highly competitive manufacturing environment. The conventional approaches of machining economics to cost analysis are no more able to cope with the new structure of the production costs in the highly automated - highly integrated manufacturing systems. Suitable cost analysis procedures should provide a strong integration between process planning data and overall system performances. The here proposed procedure for the estimate of the unit manufacturing cost in FMSs achieves this integration by using performance evaluation techniques like discrete event simulation or queueing network models.

Determination of hydroquinone and metal in photographic developer by reversed-phase ion-pair chromatography with amperometric detection

1988

Abstract Sodium 1-heptanesulphonate is used as an ion-pair reagent for the chromatographic separation of the two developing agents on a phenylsilica micro-column, with amperometric detection at an applied potential of + 0.75 V (vs. Ag/AgCl). No pretreatment of the developer is necessary. Linear calibration graphs were obtained in the range 10 −5 -1.5 × 10 −4 M.

Chapter 20 Multiple messenger candidates and marker substances in the mammalian Merkel cell – axon complex: a light and electron microscopic immunohi…

1988

Publisher Summary This chapter discusses multiple messenger candidates and marker substances in the mammalian merkel cell—axon complex. According to the APUD theory, cells of the diffuse neuroendocrine system (DNES) are essentially characterized by containing amines, peptides and marker substances like neuronspecific enolase (NSE) and chromogranin A (CGA). By the comparison of the histotopography of immunostained peptides, CGA and neuroendocrine markers, there was an expectation to find out the most appropriate immunohistochemical marker of the Merkel cell and to get further insight into the complex chemo-anatomy and possible functional spectrum of the Merkel cell -axon complex at various d…

Auswirkungen der Computertomographie und der Kernspintomographie auf den Untersuchungsablauf bei neurologisch-neurochirurgischen Erkrankungen

1988

Computertomographie und Kernspintomographie werden heute als die entscheidenden und zuverlassigsten Untersuchungsmethoden fur den Nachweis von Hirntumoren angesehen. Durch diese Diagnostik sind die intrakraniellen Geschwulste mit einer Sensitivitat von nahezu 100% zu erfassen. Der auserordentliche Wert beider Untersuchungsmethoden beruht dabei nicht nur auf dieser hohen Nachweisquote der Tumoren, sondern besonders auch auf ihrer Aussagekraft hinsichtlich der Bestimmung der Lagebeziehung zu lebenswichtigen Zentren, der von den Geschwulsten ausgehenden raumfordernden Wirkung und der artdiagnostischen Zuordnung (= Spezifitat).

Chopelain,1988 CHOPELAIN (P.).-Mont-Saint-Vincent (Saône-et-Loire), Le Bourg , Archéologie médiévale, tome 18, 1988 p.374-375.

1988

Dunham Coefficients of 14N2 from CARS Measurements of High Vibrational-States in a Low-Pressure Discharge

1988

0377-0486

Transient Reversible Growth and Percolation During Phase Separation

1988

Binary mixtures when quenched into the two-phase region exhibit transient percolation phenomena. These transient percolation phenomena and the underlying mechanism of transient reversible growth are investigated. In particular, one of the possible dynamical percolation lines between the dynamical spinodal and the line of macroscopic percolation is traced out. Analyzing the finite size effects with the usual scaling theory one finds exponents which seem to be inconsistent with the universality class of percolation. However, at zero temperature, where the growth is non-reversible and the transition of a sol-gel type, the exponents are consistent with those of random percolation.

A new synthesis and crystal structure of n-(2-hydroxyethyl)succinimide

1988

Abstract N-(2-Hydroxyethyl) succinimide was formed with 80 % yield in the reaction of 2-oxazolidinone with succinic anhydride at 210° C instead of polyesteramides obtained from N-substituted 2-oxazolidinones. The identification based on the crystal structure determination.

Flavour compounds of a commercial concentrated blackberry juice

1988

International audience

Mechanism of Heavy Element Retention in Hydrated Layers Formed on Leached Silicate Glasses

1988

ABSTRACTWe have investigated the relationship between hydrated layer formation during aqueous corrosion of silicates and retention of heavy elements (Fe, REE, actinides). Our approach is based on the comparison of the dissolution behaviour of silicate glasses, silicate minerals implanted with increasing doses of lead ions (1×E+12 to 1×E+15 ions/cm2), sorption experiments on silica surfaces and direct precipitation of hydrosilicates. The characterization of reacted surfaces was performed by combining Rutherford backscattering spectrometry (RBS) for profiling heavy elements with Resonant Nuclear Reaction Analysis (RNRA) for hydrogen profilimetry. The accumulation of these elements does not ne…

Temperature-toxicity relationships of fluvalinate (synthetic pyrethroid) on Procambarus clarkii (Girard) under laboratory conditions.

1988

Floristic affinities between the somali and the mediterranean regions

1988

The phytogeographical connections between Somalia and the Mediterranean Region were analyzed. 99 families and about 300 genera turned out to be common to the two areas, representing 67 per cent of the families and 32 per cent of the genera in the whole Somali flora. If considering only the flora of the northern portion of Somalia, these values respectively reach 76 per cent of the families and 40 per cent of the genera. Furthermore several species are common to the two areas, some showing continuous distribution between eastern Africa and the Mediterranean Region, while others have strongly disjunct distribution.

Reakcje selektywne w chemii organicznej

1988

Calcificaciones periarticulares tras la artroplastia total de cadera

1988

Se estudia la formación de calcificaciones periarticulares en una serie de 104 artroplastias totales de cadera no cementada modelo Lord. Estas osificaciones ectópicas ocurren más frecuentemente en varones que en hembras, en una proporción 3:1. En nuestra serie no encontramos una relación directa entre las calcificaciones y la causa que llevó al enfermo a la intervención o las operaciones anteriores sufridas por el paciente.

Séduire et dessiller par l'objet: réflexions sur la poétique de Francis Ponge

1988

Estudio del tratamiento de los objetos en la poesía de Francis Ponge.

Primeros resultados sobre variaciones del ambiente lumínico en el seno de varias comunidades vegetales

1988

Se caracterizan y tipifican 4 modelos de iluminación en el seno de comunidades vegetales pertenecientes a la serie reconstitutiva del encinar termófilo valenciano, Rubio longifoliae - Quercetum rotundifoliae Costa, Peris & Figuerola 1982. valenciano, Rubio longifoliae - Quercetum rotundifoliae Costa, Peris & Figuerola 1982. Para ello se analizan los niveles de rediación fotosintéticamente activa bajo cubierta de coníferas (pinus halepensis Miller), lauroides (Arbutus unedo L. y Viburnum tinus L.), frondosas perennifolias (Quercus rotundifolia Lam) y la combinación de grandes arbustos perennifolios (Pistacia lentiscus L.) y frondosas caducifolias (Fraxinus ornus L.) a 4 alturas de toma de da…