Claves para un contubernio

1980

Hybridization within the Rana ridibunda Complex of North Africa

1980

Abstract Cellogel electrophoretic study of the plasma protein pattern, especially the albumin fractions, and microdensitometric determination of erythrocyte nuclear DNA amount in 25 frogs of the Rana ridibunda complex from different localities in Morocco and Algeria allows the conclusion that two different forms of this complex are hybridizing in North Africa, as it is found in the Rana esculenta complex in Europe or in the East Asian green frogs. These forms can be identified by their albumin alleles, but not yet by their morphology. They produce mainly triploid hybrids.

L'analyse du développement des universités

1980

National audience

Remark on integrable Hamiltonian systems

1980

An extension ton degrees of freedom of the fact is established that forn=1 the time and the energy constant are canonically conjugate variables. This extension is useful in some cases to get action-angle variables from the general solution of a given integrable Hamiltonian system. As an example the Delaunay variables are proved to be canonical.

Análisis policlínico de sedimentos arqueológicos de la cueva de Les Malladetes (Barx, Valencia)

1980

Los fantasmas del Parlamento

1980

Qualitative and quantitative analysis of the n-alkanes C9-C17 and pristane in clean air masses

1980

An analytical method was developed for measuring n-alkanes (C9 to C17) and other hydrocarbons in tropospheric air with mixing ratios of a few ppt (10−12) and higher. The hydrocarbons are collected in situ in absorption tubes, carefully protected against contamination and analysed later in the laboratory by gas chromatography. First data are reported for Atlantic air masses at the west coast of Ireland.

Tres nuevas clases de espacios localmente convexos

1980

THE DESIGN OF AN INFRASTRUCTURE FOR TECHNOLOGY TRANSFER IN SOUTHERN ITALY– ROLE OF REGIONAL INSTITUTIONS

1980

This paper coordinates and integrates the interventions of Proff. G. LO GIUDICE and A. ROMANO, included in the conference programme. It starts mainly from the socio-economical system of Southern Italy, and it consists in the following main points: - analysis of the system features to be interconnected for the development of an infrastructure for developing technological transfer; - ways of understanding the suitability of technologies for Southern Italy; - a proposal for a macro-organizational model for the development of an infrastructure aiming at the technological transfer; - pointing out the role of the “Regioni” and of the direct Government interventions in the innovative processes. (I…

Questions on terrorism

1980

Katheterlose nuklearmedizinische Verfahren zum Nachweis des vesiko-renalen Refluxes

1980

Als diagnostische Methode zum Nachweis eines vesikorenalen Refluxes wird in der Regel das rontgenologische Miktionszysto-Ureterogramm verwendet, das mit Hilfe eines Blasenkatheters [1–4], gelegentlich auch nach suprapubischer Blasenpunktion [5] durchgefuhrt wird. Auch zu den haufig notwendigen Verlaufskontrollen werden meist rontgenologische Untersuchungsmethoden eingesetzt, wobei neben einer wiederholten Blasenkatheterisierung eine relativ hohe Strahlenbelastung in Kauf genommen werden mus.

Ober Ein Rayleigh-Ritz-Verfahren zur Bestimmung Kritischer Werte

1980

This paper is concerned with the existence of critical points for a functional f defined on the level set of a second functional g. Existence of nontrivial solutions for the nonlinear eigenvalue-problem f′(u) = λg′(u) and convergence for a nonlinear analogue to the Rayleigh-Ritz-Method is proven. The results are applied to a nonlinear ordinary eigenvalue problem where it is shown that the lowest point in the continuous spectrum of the associated linearized operator is a bifurcation point of infinite multiplicity.

Molecular Evolution and the Phylogenetic Relationships of the African Toad, Bufo danielae PERRET, 1977 (Salientia : Bufonidae)

1980

Abstract Phylogenetic relationships of the African toad Bufo danielae are investigated using a variety of biochemical approaches. Nuclear DNA content was assayed and compared to representatives of three species groups of African Bufo. Cellogel electrophoresis of plasma proteins was performed and patterns of B. danielae compared with those of representatives of the African B. regularis species complex. Finally microcomplement fixation analyses of albumin relationships of B. danielae and African Bufo were carried out. The strengths of the varied approaches for phylogenetic analysis are discussed. B. danielae appears most closely related to B. maculatus and B. pusillus, it being some 5-6 mill…

Воспроизводство населения и уровень жизни

1980

Сборник научных трудов посвящен проблемам демографии на современном этане.

Adolph Wagner, Briefe - Dokumente - Augenzeugenberichte 1851-1917: Ausgewählt und herausgegeben von Heinrich Rubner, Duncker & Humblot, Berlin 19…

1980

Intravesical Treatment of Superficial Urinary Bladder Tumours with Adriamycin

1980

Personal experience resulted in the observation that intravesical Adriamycin (ADM) is effective in some patients with multiple or diffuse papillary bladder tumours. A review of the literature shows that similar results have been obtained elsewhere, especially in Japan and Sweden. The response rate was higher if single doses of at least 50 mg were employed. Intravesical instillations of ADM appear to be valuable also in the treatment of carcinoma in situ and in prophylactic treatment after transurethral resection (TUR) of papillary bladder tumours.

LIGAND FIELD CALCULATION FOR THE COMPLEX Fe(H2O)2+6 IN FROZEN AQUEOUS SOLUTION OF Fe(ClO4)2

1980

Bestimmung der polycyclischen, aromatischen Kohlenwasserstoffe (PAK) nach der Trinkwasser-Verordnung: Untersuchung über mögliche Störungen durch ande…

1980

Die Lage von 44 PAK im 2dimensionalen Dunnschicht-Chromatogramm wurde ermittelt. Die in einigen Fallen auftretenden Uberlagerungen haben fur die Praxis keine Bedeutung, weil die storenden Substanzen entweder eine sehr schwache Fluorescenz besitzen oder in naturlichen Extrakten nicht oder in viel geringerer Konzentration als die Standard-Substanzen vorkommen. Die quantitative Bestimmung der 6 Standard-Substanzen wurde durch Zugabe von Bodenextrakt oder von 18 PAK, deren Vorkommen in der Umwelt nachgewiesen wurde, nicht gestort.

Nobleza y señoríos durante el XVIII valenciano

1980

Nobleza y señorío en la Valencia del antiguo régimen.

El Trías extrusivo al norte de la sierra de Espadán: Aspectos tectónicos y morfotectónicos

1980

Cerebroarthrodigital syndrome: A newly recognized formal genesis syndrome in three patients with apparent arthromyodysplasia and sacral agenesis, bra…

1980

We describe three patients with a complex syndrome of apparent arthromyodysplasia, dyscephaly, sacral agenesis, and hypoplastic digitis. Cause is unknown, but an environmental cause is suspected on the basis of ergotamine exposure in one case and diazoxide intake in another, together with suggestive similarities to anomalies seen in animals treated with these drugs and to calves with the Australian hydranencephaly/arthrogryposis syndrome caused by Akebane or Aino virus. Pathogenetically the primary defect may be a neural tube-neural crest dysplasia with multiple secondary and tertiary manifestations and deformities.

Testen von Homogenität bei sehr Seltenen Ereignissen

1980

Der Begriff des sehr seltenen Ereignisses stammt von J. Neyman. Er tritt zuerst auf in der Arbeit [2] von W.J.BUHLER, H. FEIN, D. GOLDSMITH, J.NEYMAN und P.S.PURI. Sei M die Haufigkeit, mit der ein bestimmtes Ereignis bei N unabhangigen Wiederholungen eines Experiments oder einer Beobachtung auftritt. Ist dann die relative Haufigkeit M/N so klein, das die ublichen Approximationen der Verteilung durch die Normalverteilung oder die Poisson-Verteilung nicht moglich sind, aber gleichzeitig Mr/N von der Grosenordnung 1 fur ein r > 1 , so sprechen wir von sehr seltenen Ereignissen (die ursprungliche Definition in [2] mit r = 2 wurde von P.S.PURI [4] zu der hier verwendeten modifiziert).

PRESYNAPTIC MUSCARINIC CONTROL OF NORADRENALINE RELEASE

1980

Profesore Milda Pētersone: personālais literatūras rādītājs

1980

Saturs: Priekšvārds. A. Skrupskis. Bioloģijas zinātņu doktore profesore Milda Pētersone. Bioloģijas zinātņu doktores profesores M. Pētersones publicētie darbi (1936.-1980.) Bioloģijas zinātņu doktores profesores M. Pētersones rediģētie darbi. Bioloģijas zinātņu doktores profesores M. Pētersones vadītās disertācijas. Raksti par bioloģijas zinātņu doktori profesori M. Pētersoni. Bioloģijas zinātņu doktores profesores M. Pētersones darbu alfabētiskais rādītājs. Personu rādītājs.

Signos del tiempo: la complejidad

1980

Influence de la présence des gènes Rht1 et Rht2 (gènes de réduction de hauteur) sur la composition lipidique de plantules étiolées de blé

1980

National audience

Formas litorales estabilizadas en el límite del País Valenciano y Murcia

1980

Enzymic Control of Reactive Metabolites from Aromatic Carcinogens

1980

Mutation and transformation in C3H 10T 1/2 mouse fibroblasts were coordinately induced by 4-nitroquinoline N-oxide and identically modulated by caffeine strongly suggesting mutation as one necessary step in the sequence of events ultimately leading to transformation. The enzymic control of reactive metabolites derived from aromatic carcinogens was then investigated using bacterial mutagenicity as an analytical tool. It was shown that the correlation of bacterial mutagenicity with carcinogenicity of BP and four major metabolites was substantially better when these compounds were activated by intact hepatocytes as compared to commonly used broken cell preparations which suggests that the rela…

Composition chimique de la Brassica juncea utilisée dans la fabrication de la moutarde de Dijon

1980

National audience

Fisiología y valoración clínica de los movimientos respiratorios fetales

1980

INTERINDIVIDUAL VARIATIONS OF EPOXIDE HYDRATASE ACTIVITY IN HUMAN LIVER AND LUNG BIOPSIES, LYMPHOCYTES AND FIBROBLAST CULTURES

1980

Publisher Summary Most pharmaceuticals, toxic compounds, mutagens, and carcinogens undergo metabolism in the human body. Differences in drug metabolizing enzymes cause differences in susceptibility towards effects or side effects of these compounds. This chapter presents a comparison of epoxide hydratase (EH) activity in human individuals. Activities were measured in biopsy samples of liver, which is the main site of drug metabolism, and of lung, which is an organ that is continually exposed to potential enzyme inducers and to carcinogenic compounds. EH was studied in native lymphocytes, cultured lymphocytes, and fibroblasts in which environmental influences can be controlled and the geneti…

Zvaigžņotā Debess: 1980, Pavasaris (87) - 1980/81, Ziema (90)

1980

SEM-Untersuchungen an myxospermen Diasporen

1980

The epidermal structure of mucilage producing seeds and fruits before and after contact with water is studied. Main emphasis is laid on the elucidation of structural peculiarities of the dessicated mucilaginous substances.

Background of Physiology in the Pulmonary Circulation

1980

This paper has to be considered as an introduction to the physiology of pulmonary circulation: it can only introduce to some aspects of this topic which will be dealt with in more detail in the following presentations and actually are widely discussed in the literature.

Anodic oxide films on tungsten—I. The influence of anodizing parameters on charging curves and film composition

1980

Abstract The formation of anodic films on tungsten has been studied in 1N solutions of H 2 PO 4 , H 2 SO 4 , HNO 3 , HClO 4 and HCl at different temperatures. The shape of the anodic charging curves depends on the electrolyte composition and on the temperature. The chemical composition of the films is strongly influenced by the working temperature. The first step of the anodization is the formation of a barrier film of amorphous WO 3 . The thickening of the oxide layer occurs on account of the WO 3 dissolution and following precipitation of sparingly soluble oxides on the electrode surface.

Effects of UV and Blue Light on the Bipotential Changes in Etiolated Hypocotyl Hooks of Dwarf Beans

1980

One of the most complex topics to study in biology is the ability of organism to perceive, code, transmit, and integrate environmental information, which is used to direct the cellular metabolism and developmental processes occurring. The detection of different wavelengths of light by specific mechanism plays a key role in plant development. Although great progress has been made in the study of plant photoreceptor pigments, some pigment systems are understood better than others.