Вокруг теоремы Геделя

1981

Проведен методологический анализ природы математики. Показано, что сущность математического метода состоит в исследовании застывших моделей. Обоснована несостоятельность утверждений об ограниченности аксиоматического метода. Предлагается следующая методологическая оценка теоремы Геделя о неполноте: Всякая формальная теория с методологической точки зрения является моделью некоторой застывшей системы мышления. С учетом этого основной вывод из теоремы о неполноте можно переформулировать так: всякая достаточно всеобъемлющая, но застывшая система мышления неизбежно оказывается несовершенной – в ней содержатся либо противоречия, либо проблемы, для решения которых данной (застывшей!) системы недос…

Indium Selenide Solar Cells

1981

Indium selenide photovoltaic devices are described. Transport and photovoltaic properties are discussed. Efficiencies of 6% are reported and ways of improvement are proposed.

Morfología de la peste de 1677-78 en Murcia

1981

Muon Knight shift studies in single crystals of Zn and Cd

1981

Recently f i r s t resul ts have been reported on the muon Knight s h i f t in high pu r i t y (6N) spherical s ingle crys ta ls of Cd and Zn [ l ] . These measurements, using a stroboscopic ~SR-technique [2 ] , are extensions of e a r l i e r ~+ Knight s h i f t measurements in nontrans i t ion metals [3 ,4] in which the pos i t i ve muon is used as a "hydrogen" subs t i tu te in the study of i t s local e lec t ron ic s t ructure in a metal environment. Since the s o l u b i l i t y of hydrogen in these metals is general ly very small , no proton-NMR measurements have ever been performed in th is class of metals. To the extent that the mass d i f ference between the proton and the muon is…

false

1981

Die Wirkung von Sorbins�ure auf Saccharomyces cerevisiae

1981

Zellen vonSaccharomyces cerevisiae adsorbieren innerhalb kurzer Zeit Sorbinsaure. Die Menge der adsorbierten Saure ist abhangig von der Hefemasse und der Sorbinsaurekonzentration. Da bei pH 3 wesentlich mehr Sorbinsaure adsorbiert wird als bei pH 7, kann angenommen werden, das die undissozuerten Molekule adsorbiert werden. Es kommt jedoch nicht zu einer Anreicherung von Sorbinsaure in den Hefezellen, denn sofern kein Abbau erfolgt, kann die Saure nach einigen Tagen quantitativ im Medium wiedergefunden werden. Durch die Adsorption wird die Sorbinsaurekonzentration im Bereich der Zellen erhoht, was wahrscheinlich fur die Hemmwirkung von Bedeutung ist. Unabhangig vom pH-Wert des Mediums wird v…

Invers-voltammetrische Bestimmung des Thalliums

1981

Es wird ein Uberblick uber die invers-voltammetrische Bestimmung des Thalliums gegeben. In Losungen mit EDTA storen die meisten Elemente die Bestimmung des Thalliums nicht. Die Bestimmung neben Blei ist bei geeigneten Elektrolysespannungen moglich. Auf einige Anwendungsmoglichkeiten der invers-voltammetrischen Bestimmung des Thalliums wird hingewiesen.

Fyysisen kuormituksen vaikutus harjoitelleiden hiirten reisilihaksen lysosomaalisten hydrolaasien aktiivisuuksiin

1981

Dos piezas de cerámica no típicamente Ibérica del Puntal dels Llops (Olocau, Valencia)

1981

Estudio de dos cerámicas de cocción reductora del Puntal dels Llops.

Second harmonic ac polarography of strongly adsorbed electroactive species

1981

Abstract The second harmonic ac current is calculated for the case of a quasi-reversible surface redox system: both species are strongly adsorbed according to a Langmuir isotherm and the kinetics of the process are controlled by the electron transfer. The current is measured with a phase-sensitive detector and the variation of the in-phase and quadrature components vs. the frequency leads to the surface rate constant ks. The experimental results obtained for benzo-(c)cinnoline are in good agreement with the theoretical predictions and with the results of impedance measurements. The advantages of the two methods are compared.

A new method for data evaluation of small angle neutron scattering experiments and its application to amorphous polycarbonate

1981

The conformation of single chains in bulk polymer materials can be evaluated from coherent neutron scattering on mixtures of normal and deuterated polymers. It is shown that the single-chain structure factor can be also obtained from measurements of highly concentrated mixtures and the procedure of evaluation is described. The application to amorphous polycarbonate demonstrates the advantages of the method.

Semimodular Locally Projective Lattices of Rank 4 from v.Staudt’s Point of View

1981

We consider groups of projectivities in a certain kind of lattices called “Spaces”,also comprising the circle planes, and give theorems of v.Staudtian type, which characterize those Spaces which can be represented by a sublattice of a projective geometry of rank 4.

La maison de La Tène moyenne de Verberie (Oise) "Le Buisson Campin"

1981

Blanchet Jean-Claude, Buchsenschutz Olivier, Meniel Patrice. La maison de La Tene moyenne de Verberie (Oise), «Le Buisson Campin». In: Revue archeologique de Picardie, n°1-2, 1983. Les celtes dans le nord du bassin parisien, sous la direction de Louis Bardon, Marc Durand, Alain Duval, Jean-Luc Massy, Andre Rapin, Corinne Robinson, Georges-Pierre Woimant, Jean-Claude Blanchet et Jean-Louis Brunaux. pp. 96-126.

Profesors Voldemārs Grīnšteins: personālais literatūras rādītājs

1981

Saturs: Priekšvārds. Ķīmijas zinātņu doktors profesors Voldemārs Grīnšteins / T. Dumpis/. Ķīmijas zinātņu doktora profesora V. Grīnšteina publicētie darbi. (1936.-1981.) V. Grīnšteina izsniegtās (publicētās) autoraplleoības. V. Grīnšteina vadītās disertācijas. Darbi par V. Grīnšteinu. V. Grīnšteina darbu alfabētiskais rādītājs. Personu rādītājs.

Una muestra de la estructura demográfica valenciana del siglo XVIII. Vinaròs en 1754

1981

Los Clubes políticos

1981

A generalization of Dembowski's theorem on semi-planes

1981

Sudrabaino mākoņu novērojumu žurnāls, 1981: Sigulda

1981

Digitalizēts mezosfēras mākoņu 1981. gada SIGULDAS novērojumu žurnāls: novērojumu sezonas naktis, novērotāji, MK identifikācija, meteoroloģiskā situācija, informācija par uzņemtajām fotogrāfijām. --//-- Mesospheric cloud observation data in Sigulda, 1981, digitized observation log: observation season nights, observers, MC identification, meteorological situation, information about the photos taken.

Studies on some antimony(III) complexes with tridentate schiff base ligands

1981

Abstract The antimony(III) complexes FSb(Sab), ClSb(Sab) and ClSb(Sat) containing dianonic, potentially tridentate Schiff-base ligands with ONO(Sab 2− ) and ONS(Sat 2− ) donor atoms have been prepared and characterized. The mass spectra of these derivatives are reported. The occurrence of chelation by the tridentate ligand is inferred from the infrared data. The antimony-121 Mossbauer parameters at 4.2 K are reported. The magnitudes and the positive sign of eQV zz suggest a consistent p-character of the antimony lone-pair orbital. Observed differencies in the isomer shift and eQV zz values are discussed on the basis of the likely distribution of electron density around antimony.

Stoffe mit fraglichem Vitamincharakter

1981

Auf die im folgenden zu besprechenden Substanzen myo-Inosit und Cholin trifft die am Anfang dieses Buches gegebene Definition fur Vitamine nicht zu. Zum einen ist die Unentbehrlichkeit dieser Stoffe fur den Menschen nicht erwiesen, typische Mangelerscheinungen sind nicht bekannt; zum anderen trifft die Mengenklausel der Definition nicht zu: Beide Substanzen sind Bausteine von Korpersubstanz und Bestandteile von Strukturen und werden im Gramm-Bereich mit der Nahrung aufgenommen. Schlieslich konnen beide aus Vorstufen im Stoffwechsel hergestellt werden. Experimentell erzeugte Mangelerscheinungen im Tierversuch sind vermutlich darauf zuruckzufuhren, das unter bestimmten extremen Bedingungen di…

Kritischer Vergleich und Ausblick zur biologischen Wertigkeit des vorgestellten Simulationsmodells

1981

Das Ziel der vorliegend besprochenen Abschnitte 2.2.1 bis 2.9.7 war es, die vielfaltigen experimentellen Befunde der Physiologie zu einem konsistenten und im Gesamtverhalten in sich widerspruchsfreien Gesamtmodell zusammenzufuhren und zu verifizieren. Die Verifikation wurde anhand des Vergleichs experimenteller Befunde gegen die Ergebnisse des Simulationsmodells fur verschiedene physiologische und pathophysiologische Zustande durchgefuhrt.

Provisión de cátedras entre 1620-1630: Datos para la historia de la Universidad de Valencia

1981

An evaluation of the microscopical counting methods of the tape in hirst-burkard pollen and spore trap

1981

Abstract Three different sampling units in current use and different sampling strategies were tested. Randomly placed microscope fields are good in estimating the daily mean concentration, but very big sample size is needed. Traverses across the slide in systematic order are best to estimate the shortterm concentrations and diurnal variation. A formula for the estimation of the error in one transverse traverse is given. Twelve transverse traverses in systematic order is also enough to estimate the daily mean concentration. One or two traverses along the length of the slide give often unreliable estimates because of the irregularities in the transverse variation of the particle concentration…

Antibakterielle Wirkstoffe, 7. Mitt. Die Aminomethinylierung im System der Guanidinoheterocyclen

1981

Platelet Function Changes In Acute Myocardial Infarction

1981

Whether the thrombotic component of myocardial infarction is primary or secondary in a given patient, platelet function alterations can influence many mechanism from which depends if the thrombotic lesion grows or sends platelet emboli to the smaller myocardial vessels. Recently in some cases of infarction, coronary artery spasm has been demonstrated angiographically; thromboxanes, vasoconstrictive and platelet-aggregating substances, are released by platelets during myocardial ischemia. The local release of these substances may modify the myocardial cell viability and regional blood flow.The aim of the present study was to investigate changes in platelet function in relation to the time in…

Педагогическая направленность учебного процесса в университете в подготовке учителей иностранных языков

1981

La Fundación : Un defensor colectivo del pueblo

1981

Inscripcions llatines de Segorbe i L'Alcora

1981

1) Segorbe. Apareguda I'any 1964 a la partida d'EI Campo, on ja s'havia trobat una altra inscripció, en fer els fonaments dels tallers de la casa Renault,situada a la vora de l'antiga carretera Nacional 234, a l'esquerra abans d'arribar a la ciutat, on es va guardar fins el seu recent trasllat al Museu Municipal, en qué actualment es conserva. Llosa de pedra calcària grisenca, les mides de la qual fan 50/45/15 cm. La seua superfície inscrita està molt danyada, i apareix allisada, a diferència de la resta, que està simplement desbastada. El camp epigràtic no apareix emmarcat per cap motlura, i presenta els següents marges: superior, 3'5 cm.; inferior, 10 cm.; dret, 3 cm.; esquerre, 7 cm. La …

Politiques culturelles et démocratie. Un champ de contradictions entre les objectifs institutionnels et les initiatives collectives

1981

Aplicaciones del modelo de equilibrio del mercado de capitales

1981

Relationship between XPS core binding energies and atomic charge in adducts of SnIV derivatives with pyrazine, and comparison with mössbauer isomer s…

1981

Abstract Adducts Snhal·pyz (hal = Cl, Br, I; pyz = pyrazine), RnSnCl 4−n ·pyz (n = 1, R = Me, Bu n , Oct n , Ph; n = 2, R = Ph) and SnCl 4 ·(pyz) 2 have been investigated by X-ray photoelectron spectroscopy. Binding energy (b.e.) values are discussed in the light of structural characteristics of the adducts as well as of valence state electronegativities of atoms and groups bound to tin. Sn 3d 5 2 b.e.s, corrected for the Madelung potential at the metal atom, linearly correlate with both partial atomic charges on tin, accounting for relaxation upon ionization, and 119 Sn Mossbauer isomer shifts. The results are interpreted in terms of six-coordinated, octahedral type, configurations of the …

Muon spin rotation studies in single crystals of Zn and Cd

1981

Immunofluorescence studies on the subcomponents of the first component of complement (C1): detection of C1q and C1s in different cells of biopsy mate…

1981

The first component of complement (C1) is a macromolecule consisting of three distinct subcomponents, C1q, C1r, and C1s. In regard to its production site and its role in phagocytic processes it was of interest to find out whether these different subcomponents could be detected in human biopsy material only as a complex in individual cells or whether C1 subcomponents could be found on different cells. To study this question, monospecific fluorescein-labelled anti-human-C1q IgG and monospecific rhodamine-labelled anti-human C1q IgG were used. Biopsy material from human rectum was stained with fluoresceinated antisera, either by use of one antiserum or by double staining. Using this technique,…

Einfluß sterischer Hinderung auf den Abbau von Ciclacillin und Ampicillin

1981

Kinetische Untersuchungen der Reaktivitat von Aminopenicillinen belegen bei Ciclacillin eine sterische Hinderung der α-Aminogruppe der Phenylacetamido-Seitenkette. Vergleichende Haltbarkeitsuntersuchungen an Arzneizubereitungen von Ciclacillin und Ampicillin ergaben, das die aus der sterischen Hinderung resultierende hohere Stabilitat von Ciclacillin auch bei Injektions-Losungen, Suspensionen sowie eingeschrankt bei Pulvern und Tabletten nachweisbar ist. Influence of Steric Hindrance on the Degradation of Ciclacillin and Ampicillin Kinetic measurements of the reactivity of aminopenicillins demonstrated steric hindrance of the side chain amino group of ciclacillin. Comparative stability meas…

A propósito de la versión castellana de 'A theory of Justice'

1981

Esta versión no sólo está muy por debajo de lo que la importancia adquirida por A Theory of Justice durante el último decenio hubiera requerido, sino que incluso queda muy por debajo de lo que es usual y normal que aceptemos en obras de menos envergadura. La traducción es insegura, penosamente apegada a la construcción de la frase en inglés hasta bordear los límites de lo inteligible en castellano, inexacta y harto deficiente.

New Glass Capillary Gas-Chromatographic Methods for Metabolites in Urine and Serum

1981

The analytical system suggested in this paper is a further development of pre-chromatographic methods and of column switching techniques described in previous papers1,2,3.In order to use modern gas-chromatographic techniques for the determination of metabolites in urine and serum quick and reliable pre-chromatographic methods for extraction, concentration and derivatization must be developed which give final (dosage) volumes of 5 to 10 μl with starting sample volumes of 0.1 ml of urine or 5 ml of serum as described by Dunges4.