showing 36 of ~574560 from 574555 documents
Wir verharren in einer Art selbstgenügsamem Provinzlertum
1980
Doppelniere und Reflux-Spätkomplikationen
1980
Abhangig vom Alter der Patienten und der Art der Misbildung weisen Doppelanlagen von Nierenbecken und Harnleiter unterschiedliche Komplikationsraten auf. Nach Angaben aus der Literatur und der Analyse von 108 eigenen Fallen mussen bei Kindern fast ausschlieslich komplette Doppelanlagen, d.h. mit zwei getrennt mundenden Ureteren, operiert werden. In mehr als der Halfte der Falle ist ein vesiko-renaler Reflux die zur Operation zwingende Komplikation. Hier kann in uber 80%, im eigenen Krankengut in 83%, durch eine Antirefluxoperation organerhaltend vorgegangen werden.
SULL'IMPIEGO SPERIMENTALE DI UN COLLANTE BIOLOGICO NELLA CHIRURGIA DEGLI ORGANI PARENCHIMATOSI
1980
Gli Autori hanno condotto uno studio sull'uso di un derivato del Cianoacrilato nella riparazione di lesioni del parenchima epatico e splenico indotte sperimentalmente su ratti albini del ceppo Winster
The Measurement of the CO2 Hb Binding Curve of Human Hemoglobin by 13C-NMR Spectrometry
1980
It is well known that under physiological conditions CO2 binds to the four terminal amino groups of hemoglobin (Hb) (Kilmartin and Rossi-Bernardi, 1971). The carbamino compounds which are formed by this reaction are involved in the Haldane effect.
Analyse socio-économique de deux systèmes de télévision au Brésil dans les États du Maranhao et du Ceara
1980
International audience
Itä-Karjalan pakolaiset 1917-1922
1980
This research is dealing with the exiles (about 12 000 in number) who for political or equivalent reasons arrived at Finland from Russian and Aunus Karelia. None before has studied what this group of exiles was like in its composition. No analysis concerning the arrangement of the exile relief measures in Finland has been done, either. When looking for the answer to the question why the exiles were forced to leave their native region, the researchers have tried to shed light on the political conditions in East-Karelia and first of all on the basic features of the so-called East-Karelian Autonomy Movement as well as the later anti-Soviet Movement: i.e. the groups supporting the anti-Soviet M…
The Maximum Entropy Formalism.
1980
Long-range parity violating interaction in muonic atoms
1980
Abstract Long-range parity violating forces are induced in muonic atoms by virtual γ−Z 0 conversion between the muon and the nucleus. They are of order G F α with range (2 m e ) −1 . The relevant diagrams in unified electroweak interactions are calculated and the effects of the corresponding potential on parity admixtures in muonic levels are studied. It is proved that they are negligible for n = 3 orbits, but they have overwhelmed the conventional short-range contribution for n = 5.
Conjunción bibliopancreático-duodenal : estudio experimental valoracion clínico-quirúrgica
1980
Las Instituciones del Reino de Valencia
1980
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Polémica sobre la función del periodista en las jornadas de Murcia
1980
Las cartas que tenemos
1980
Villamalea. 1900-1939. Estudio sobre una comunidad rural de La Mancha. Del caciquismo a la aparición de las organizaciones de clase.
1980
El objeto de la Tesis Doctoral es el estudio de una comunidad rural en La Mancha, Villamalea (Albacete) durante el período 1900-1939. El interés por el estudio de Villamalea tiene su base en el fuerte desarrollo político y sindical, como consecuencia de la conciencia política y social, que alcanza su mayor expresión en la década de los años 60 y 70 del siglo XX. El alto nivel de conflictividad con el régimen del general Franco, el arraigo y la extensión de la conciencia de clase de los vecinos, la forma original con que se enfrentaron los problemas económicos y la crisis de la agricultura, las alternativas planteadas a la situación existente y otros hechos acaecidos en la década de los años…
Die thermische polymerisation von methylmethacrylat, 2. Bildung des ungesättigten dimeren
1980
The spontaneous thermal polymerization of methyl methacrylate (MMA) is accompanied by the production of serveral oligomers among which a linear unsaturated dimer H-1 (dimethyl 1-hexene-2,5-dicarboxylate) is predominant. The reaction kinetics of this dimer formation was investigated in bulk and in solution. The temperature dependence of the second order dimerization constant was determined as Reaction mechanisms for the thermal dimer formation of MMA are discussed.
Fourier transform nmr investigations of organotin compounds
1980
Abstract NMR spectra have been obtained for fiteen title compounds, mainly with R = Me. Tin chemical shifts were found to lie within the expected ranges, but to vary little with R or, apparently, with change in ring size. While the magnitute of 1 (SnSe) was as predicted, the of 1 (SnTe) was more than twice as large as that previously observed for (Me 3 Sn) 2 Te. In compounds Me 6 Sn( 3 X 3 , 2 J(SnMSn) varied systematically with variations in x, but within relatively narrow limits (195-250 Hz); a much more drastic variation was observed for Me 6 Sn 3 X 2 , possibly due to bond angle changes at Sn and X.
La victoria que no cesa
1980
La comitiva de Alfonso XI: notas para su estudio
1980
false
1980
Using a bifunctional initiator such as the tetrameric dianion of α-methylstyrene for the anionic polymerization of methyl methacrylate the rate constant is found to increase with conversion approaching that observed with a monofunctional initiator while the tacticity of the polymers obtained changes from that of an almost ideally atactic to a highly syndiotactic polymer. The results are explained by the assumption of an intramolecular association of the two terminal ion pairs yielding a new active species and gradually dissociating with increasing degree of polymerization of the chain. Using a polymeric dianion of α-methylstyrene as an initiator the association phenomenon is not observed.
El partido comunista ha sido el más afectado por el desinterés de los intelectuales hacia la política
1980
Valeur nutritionnelle du tourteau de colza chez les pondeuses. Influence sur les qualites technologiques et organoleptiques de l'oeuf.
1980
National audience
Relationship between conformation and physicochemical properties of polypeptides. I. Synthesis of homo- and co-oligopeptides by the liquid-phase meth…
1980
The synthesis of the following oligo- and co-oligopeptides by the liquid-phase method is described: (L-Met)15 (I), [L-Glu(OBzl)]20 (II), (L-Val)8-Gly (IV), (L-Ile)8-Gly (V), (L-Ile)4-Gly-(L-Ile)4 (VI), (L-Ile)4-Pro-(L-Ile)4 (VII), (L-Met)5-L-Pro-(L-Met)5 (VIII), [L-Glu(OBzl)]7-L-Pro-[L-Glu(OBzl)]7 (IX). The oligomers are covalently bound to bifunctional polyethylene glycol (PEG) and monofunctional PEG-M of Mr 5 × 103−2 × 104. Analytical controls were carried out after each step of synthesis in order to ensure quantitative coupling yields. All products could be obtained in high purity as indicated by amino acid analysis, thin-layer chromatography and chiroptical methods. The solubility of th…
Single Intravenous Dose Kinetics and Accumulation of Atenolol in Patients with Impaired Renal Function and on Hemodialysis
1980
The concentration of atenolol in plasma and urine was determined following an intravenous (i.v.) dose given to 17 hypertensive patients with a glomerular filtration rate (GFR) between 5 and 105 ml/min and in 4 patients on hemodialysis. In patients with normal renal function the mean half life of elimination was calculated to be 6.8 h. This value increased to a mean of 50.1 h in patients with a GFR below 10 ml/min. In patients on hemodialysis the half life of elimination was about 4 h. The elimination rate constants as well as the body and renal clearances of atenolol have a significant correlation with the GFR. Although accumulation of atenolol was observed, especially after multiple oral d…
Familles
1980
Stereospecific interaction of bicuculline with specific [3H]strychnine binding to rat spinal cord synaptosomal membranes
1980
The gamma-aminobutyric acid (GABA) antagonist (+/-)-bicuculline inhibits specific [3H]strychnine binding to postsynaptic glycine receptor sites in rat spinal cord synaptosomal membranes with an inhibition constant of about 5 microM, which is fairly similar to its inhibition constant reported for the GABA receptor. This effect is highly stereospecific, since the affinity of (-)-bicuculline for the specific [3H]strychnine binding sites is more than ten times less than that of the pharmacologically active (+)-bicuculline. Besides an unspecific effect at the glycine receptor, the results could suggest that the glycine and the GABA receptors are located close together in spinal cord membranes, s…
Los ilustrados valencianos y la economía
1980
The Computer Control Software for MAMI
1980
The computer control system of the Mainz Microtron is designed to keep track with the modular and step-by-step construction of the three accelerator stages. The system is up to now based on two loosely coupled HP1000 minicomputers, interfaced via CAMAC to the accelerator components and to the operator desk. The control software is divided into several layers of portable processes distributed to both computers. Communication between the processes, access to the data bank and the routing of CAMAC interrupts are handled via a message system which operates with symbolic addresses.
Introduction to the microsymposium and on the modulation of thermodynamic parameters relative to biomolecule-solvent interactions
1980
Abstract As a result of introducing a macromolecule in a solvent, changes in the structures of both solute and solvent are generally found. In this specific meaning we refer here to ‘relaxation phenomena’. The discussion will either concern or keep in a view the case of biomolecules and to which extent these changes are involved in their thermodynamic stability or functional structure: Dr. Ben-Naim will discuss hydrophobic interactions and structural changes in the solvent; Dr. Wen will focus on thermodynamic properties of aqueous solutions on hydrophobic solutes; Dr. Cordone, Dr. Fornili and myself shall discuss results of experiments concerning solutes on several types(proteins, polynucle…
Proyecto de creación de un grupo de propietarios de agrios
1980
Борьба с преступностью на современном этапе
1980
В сборнике научных трудов включены научно-исследовательские работы посвященные различным проблемам борьбы с преступностью и совершенствования уголовного и уголовно-процессуального законодательства, рассматриваются и некоторые дискуссионные вопросы криминологии а криминалистики.
Analyse des coûts de l'enseignement primaire télévisuel en Côte d'Ivoire
1980
International audience
Composition de la fraction glucidique de la Brassica juncea et de la moutarde de Dijon
1980
National audience
An atmospheric model applied to some actinometric stations of Sicily
1980
Abstract In this paper the application of an atmospheric model proposed by S. Barbaro et al. in a previous work for computing the direct and diffuse solar radiation is extended to some actinometric stations in Sicily, namely Gela, Messina, Pantelleria, Trapani and Ustica. The comparison of the monthly average values of the global radiation computed by this method with the experimental data shows a good agreement, that confirms the encouraging results obtained for Palermo in the previous work. This further test of the validity of the proposed model allows this one may be used with good reliability to predict the radiation on locations lacking in actinometric instruments. Finally, the influen…
THE FINE STRUCTURE OF O2 Hb BINDING IN ANIMALS: SALMO IRIDEUS
1980
Publisher Summary This chapter discusses the experimental results on study of the fine structure of O 2 Hb binding in animals. It is evident that the n ( S ) function represents a new tool to look at homotropic interactions, both qualitatively and quantitatively. At the moment, there are four applications: (1) study of molecular mechanism; (2) study of effectors, also pharmacological; (3) improved characterization of O 2 Hb binding, also in pathological cases; and (4) comparative studies in animals. Whole blood of fish is also investigated because usually there are found several hemoglobins. During registration of the O 2 binding curve, pH is not kept constant. Assuming that the Donnan fact…
John Barth's Giles goat-boy : a study
1980
This study seeks to rectify some of the prevailing misconceptions about the nature of John Barth' s fiction by offering a comprehensive analysis of his fourth novel, Giles Goat-Boy (1966). The study delineates two dialectics that together create the paradoxical tensions of Barth's work. The first operates between metaphor, which seeks and affirms patterns in language, and irony, which invokes metaphor in order to deny its validity; the second operates within metaphor, between metafiction, which self-reflexively examines language and fiction, and metaphysics, which focuses attention on man and his universe. Contrary to established critical opinion on Barth, which tends to stress the role pla…
Soft modes and mode splitting in paramagnetic TbP§
1980
In contrast to spin-only systems the paramagnetic phases of systems with crystal field split ground multiplets exhibit magnetic excitations of finite energy. In the presence of a magnetic exchange coupling the excitons will propagate through the lattice. A measurement of the dispersion allows in principle an insight into the exchange interaction, which is of fundamental importance for the understanding of the magnetic phenomena. Unfortunately the evolution of the dispersion at low temperatures is in most cases interrupted by the onset of magnetic order due to an alignment of the magnetic moments of the crystal field ground state. A noticeable dispersion of well-defined excitons is only expe…
Mössbauer study of the solid state configuration of triorganotin derivatives with intramolecular coordination
1980
Triorganotin bromides with intramolecular nitrogen-to-tin coordination (I-VIII, Fig. 1) have been structurally investigated by Mossbauer and infrared spectroscopy. Mossbauer-Zeeman spectra have been measured for I and VIII in order to obtain the sign of the nuclear quadrupole splitting ΔE and the value of the asymmetry parameter η. Point-charge model values of ΔE and η have been calculated for environments of tin atoms in I-VIII which are plausible in view of the results of previous investigations. From trends of experimental ΔE in the series, and from the agreement between experimental and calculated Mossbauer parameters it is concluded that the compounds I-VIII all have trigonal bipyramid…