showing 36 of ~574560 from 574555 documents
STATUS OF SUPERHEAVY ELEMENT RESEARCH
1982
ABSTRACT A review is given on the search for superheavy elements in nature. Attempts to arrive at conclusive proofs have failed thus far, however. Attempts to produce superheavy elements in the laboratory by heavy-ion reactions proved negative results although a detection sensitivity of 10−35 cm2 corresponding to a production of a few atoms per experiment has been achieved. Two approaches have been followed: complete fusion and transfer of nucleons during damped collisions. The former is illustrated by the 48Ca + 248Cm reaction, the latter by the 238U + 238U and 238U + 248Cm reactions.
Radikale Zystektomie beim Harnblasenkarzinom: Klinische Erfahrung mit 155 Patienten
1982
An der Urologischen Universitatsklinik Mainz wurden von 1967–1981 155 Zystektomien durchgefuhrt. Dies entspricht bei uber 1000 Blasentumorpatienten nur etwa 15% aller Blasentumoren. Das Besondere dieses Krankengutes ist, das die Patienten nicht vorbestrahlt waren. Lediglich bei 23 Patienten wurde eine sog. Salvage-Zystektomie durchgefuhrt, d.h. eine Zystektomie als Palliativmasnahme nach vorausgehender fehlgeschlagener, kurativ intendierter Radiotherapie. Bis 1972 wurde ohne Lymph- adenektomie operiert, ab 1972 wurden die Patienten zusatzlich lymphadenektomiert. Die Frequenz der radikalen Zystektomien hat in den letzten 3 Jahren deutlich zugenommen, wahrend bis 1972 im Durchschnitt 5 Patien…
Gregorio Mayans y la práctica jurídica: su intervención en el pleito de sucesión del ducado de Gandía
1982
El largo pleito de la sucesión de los Borja, que gana el conde de Benavente, se completa con cartas de Mayans, Nebot, Roda…
Los motivos pisciformes en el Arte Paleolítico de la Península Ibérica
1982
Raumgruppen, Deren Punktgruppen Eine Gitterbasis Permutieren
1982
Raumgruppen, deren Punktgruppen auf einer Gitterbasis als zyklische, symmetrische oder alternierende Gruppe operieren, werden von J.J. Burckhardt in § 26 seines Buches: „Die Bewegungsgruppen der Kristallographie“, Basel 1947 und 1966, behandelt. Wir leiten hier diese Aussagen aus einem Satz von Shapiro her. Die Bezeichnungen seien wie in 6.13–6.15.
Documentos árabes a Al-Azraq (1245-1250)
1982
Aproximació a la "Descipción del Reino de Valencia por corregimientos" de Josep Joaquín Castelló
1982
Diritto Urbanistico ed Edilizio
1982
Mechanical behavior and structure of single beads of homogeneous and macroporous styrene–divinylbenzene copolymers
1982
The stress–stain and ultimate behavior in compression of homogeneous and macroporous beads of styrene–divinylbenzene copolymers has been investigated in the dry state or in equilibrium with toluene, acetone, methanol, and water. The penetration modulus A indicates sensitively the transition from the glassy into the rubbery state induced by an increase in temperature or swelling. For macroporous copolymers, A of the glassy polymers is mainly determined by the porosity P, while in the rubbery region it primarily depends on the matrix structure (degree of crosslinking and concentration and composition of the diluent). The high value of the slope s of the A vs. P dependence (s ∼ −3) for macropo…
The chromosomes of 16 molluscan species
1982
Abstract Chromosome numbers were determined for two species of Placophora, eleven species of Gastropoda, one species of Pelecypoda and two species of Cephalopoda. No heterotypic or supernumerary chromosome resulted from the analysis of meiotic and, when possible, of mitotic chromosomes. For this reason no positive evidence emerges for the presence of differentiated sex chromosome pairs. Data available seem to indicate that evolution within the Mollusca phylum has been accompanied by a decrease in both chromosome number and DNA content (according to Hinegardner, 1974), if we consider subclasses, orders and families (apart from the subclass Prosobranchia). On the contrary the primitive class …
Propiedad agraria y sociedad rural en el País Valenciano y espacios contiguos (siglos XIX-XX)
1982
Linear Methods in Nilpotent Groups
1982
The subject of this chapter is commutator calculation. It will be recalled that the commutator [x, y] of two elements x, y of a group is defined by the relation $$ [x,y] = {{x}^{{ - 1}}}{{y}^{{ - 1}}}xy. $$ . We then have $$ [xy,z] = {{[x,z]}^{y}}[y,z],\quad [x,yz] = [x,z]{{[x,y]}^{z}}. $$ . These relations are rather similar to the conditions for bilinearity of forms, and there are a number of ways of formalizing this similarity. Once this is done, commutator calculations can be done by linear methods. Several examples of theorems proved by this method will be given in this chapter.
Suomalainen äärioikeisto maailmansotien välillä : ideologiset juuret, järjestöllinen perusta ja toimintamuodot
1982
This study deals with the Finnish extreme right between the World Wars. A special attention has been given to the ideology and procedures of the extreme right, because they have not been dealt with systematically in earlier research. But the study also considers such aspects of the extreme right as the historical roots going back to the 19th century, the personal traditions and social-political characteristics. The Finnish extreme right was at no stage uniform. Between the World Wars it became organized into several separate associations. They were ideologically combinations of both national and international currents of ideas of that period. Their ideologies consisted of a very early roman…
Synthese von 2-(2-Aminoethyl)-4-hydroxymethyl-imidazol+ Synthesis of 2-(2-Aminoethyl)-4-(hydroxymethyl)imidazole
1982
Estado borbónico y monarquía absoluta
1982
Poder borbónico y corona durante el siglo XVIII.
Apolo y Dioniso como principios de estructuración del campo estético
1982
El complicado juego que lo estético adopta en las manos ágiles de este pensador amante de los saltos y las pirutetas, F. Nietzsche, llega hasta el extremo de convertirse en una metafísica estética o metafísica de artista, y esto en un doble sentido: afirmando el carácter artístico y creativo de su autor y reclamándolo para sus mejores lectores · -El Nacimiento de la Tragedia está 'lleno de secretos de artista' y ha sido escrito 'para una especie excepcional de artistas' ~ y , por otra parte, dignificando lo estético de forma suprema al escogerlo como metáfora máxima de su ontología y como la única justificación válida de la existencia del mundo. Este tema capital tendrá que quedar relegado …
H2-Antihistaminika, 9. Mitt. Keten-N,N-acetale mit H2-antihistaminischer Wirkung
1982
Es wurden die Keten-N,N-acetale (Ketenaminale) 4a-e dargestellt und auf ihre H2-antihistaminische Wirksamkeit untersucht. H2-Antihistaminics, IX: Ketene N, N-acetals with H2-Antihistaminic Activity The ketene N, N-acetals (keteneaminals) 4a-e were prepared and tested for their H2-antihistaminic activity.
Rentabilidad de una pequeña explotación agraria en Vall de Uxó, 1721-1739
1982
Una serie de circunstancias nos ha permitido conocer la contabilidad de una pequeña explotación en la llanura costera valenciana, en Vall de Uxó, límite sur de la actual provincia de Castellón. En un proceso típico los arrendatarios de los derechos señoriales del Ducado de Villahermosa no pueden hacer frente a sus pagos y sus tierras son confiscadas; la cosecha está por recoger y se conceden temporalmente en administración a un campesino del lugar. Al no surgir postores en las subastas que se realizan, parte de las tierras siguen en manos de este labrador, a quien un buen día se le exigen cuentas de su administración. La relación pormenorizada de los gastos que ha realizado en el cultivo de…
Felipe IV y los avances del autoritarismo real en el País Valenciano : las Cortes de 1645 y la guerra de Cataluña
1982
Platelet sensitivity to prostacyclin and thromboxane production in hyperlipidemic patients
1982
SummaryIn 13 type II hyperlipidemics (10 males and 3 females; mean age 50.2 ± 10.6 years), in 10 type IV hyperlipidemics (7 males and 3 females; mean age 51 ± 13.3 years) and in 23 healthy age-and sex-matched controls, the following parameters were measured: plasma cholesterol; plasma TG; plasma C-HDL; VLDL, separated in a preparative ultracentrifuge; C-LDL; Apo B, with immunoelectrophoretic method; platelet sensitivity to prostacyclin; TXB2 formation in PRP; TXB2 in serum.This study provides evidence for: 1. Reduced platelet sensitivity to prostacyclin, more evident in type II hyperlipidemia that provides an additional mechanism involved in increased platelet aggregation found in type II h…
The preparation, IR spectrum and structure of the Di-μ3-hydroxo-μ-sulphatotetrakis-μ-(isonicotinato-N-oxide)tetraaqua-tetracopper(II)
1982
Abstract A very unusual new copper(II) complex with isonicotinate N-oxide (N-inicO), Cu4(N-inicO)4SO4(OH)2(H2O)4 has been prepared and its crystal and molecular structure determined from three dimensional X-ray diffraction data. The crystals belong to the monoclinic space group C2. The cell parameters are a = 19.089(8), b = 6.884(3), c = 19.533(12) A, β = 140.9(3)°, dobs = 1.99, dcalc = 2.01 and Z = 2. The structure was refined to a final R-value of 0.062. The monomeric tetranuclear complex resembles a space ship with the sulphate group at its top and pyridine rings as wings. Two copper atoms are very close to each other in the molecule; the Cu1Cu1′ distance is 2.885 A. The coordination ar…
La poesia "Tempo che s'accende ora"di G. Sarandaris. Analisis stilistica
1982
Analisi di una poesia di G. Sarandaris, poeta greco della generazione del Trenta nutrito di cultura italiana
La libertad de enseñanza en la España actual
1982
Clarificar la confusión existente en el debate educativo sobre la libertad de enseñanza en España. La libertad de enseñanza. Encuadramiento histórico del tema. Análisis del presente a través de la legislación que afecta a la libertad de enseñanza y comparación con la legislación extranjera. Análisis y comparación de la forma en la que diferentes grupos sociales (partidos, iglesia católica, y otros colectivos), entienden el tema. Bibliografía. Textos legales. Método comparativo. Análisis histórico. Los grupos sociales en nuestro país se polarizan en torno a dos bloques: en el primero, formado por grupos no marxistas, coexisten todos aquellos que entienden que la libertad de enseñanza se basa…
Netze Und Punktgruppen der Ebene
1982
In der Zahlentheorie interessiert man sich nicht nur fur die kristallographischen Punktgruppen, also die endlichen, ganzzahligen Matrizengruppen, sondern man mochte eine moglichst genaue Kenntnis von den samtlichen reduzierten Basen erhalten, die in einem Gitter gegebenen Ranges existieren. Fur die Dimensionen 2 und 3, wo die Ergebnisse durch Arbeiten von Gaus, Seeber und Dirichlet besonders vollstandig sind, ist es zweckmasig den Begriff der reduzierten Basis, der fur beliebige Dimensionen definiert ist, geringfugig abzuandern.
Gaussian plane and spherical means in separable Hilbert spaces
1982
Synthesis of non-k-region -quinones of polycyclic aromatic hydrocarbons from cyclic ketones
1982
Abstract Non-K-region o -quinones of polycyclic aromatic hydrocarbons are prepared in four steps from cyclic ketones via dehydrogenation of tetrahydrodiols with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone.
Functionalized 2-azabicyclo[3.3.1]nonanes. IV. synthesis of the indolo[3,2-f]morphan system.
1982
Abstract A short route to the 2-azabicyclo[3.3.1]nonan-7-one system is described. Condensation of 4-piperidones with diethyl 2-oxopropylphosphonate, followed by catalytic hydrogenation furnished the corresponding piperidylpropanones 6 which were cyclized with mercuric acetate in acetic acid to the target target bicyclic ketones 1 . The Fischer indole synthesis from 1 a afforded regioselectively the indole [3,2-f]morphan 2 , a new heteromorphan type.
Bronzes antiques de l’Yonne, exposition, Dijon, Musée archéologique de Dijon, 1982,
1982
Gas chromatographic and mass spectrometric analysis of chlorinated catechols occurring in pulp bleach liquors
1982
Chlorination step (C-step), spent bleach liquor from a kraft pulp mill and the product from the chlorination of guaiacol in aqueous solution have been investigated for their content of chlorinated catechols. After separation the samples were derivatized with diazoethane and analysed by glass capillary gas chromatography with an electron capture detector. The external standard mixture of all ethylated chlorocatechols was used in the measurements. The structures of the compounds identified were confirmed by gas chromatography/mass spectrometry. Eight chlorinated catechols were identified from a sample prepared by chlorination of guaiacol with Cl2 in aqueous solution. However, only four of the…
Chemical Carcinogenesis by Polycyclic Aromatic Hydrocarbons
1982
The realization that for a vast number of toxic effects, not the given compound itself was responsible but rather a metabolite that was produced from the compound, brought about an enormous step forward in chemical carcinogenesis and in toxicology in general (1–15). In chemical mutagenesis and in chemical carcinogenesis very often coumpounds, which by themselves are chemically inert, will produce mutagenic and carcinogenic effects. A prime example of this is the polycyclic aromatic hydrocarbons, which consisting of condensed aromatic rings are chemically inert, yet do produce mutagenic and carcinogenic effects. During the last 10 to 20 years researchers have started to realize that this is …
Die ultraschallgesteuerte Nephrolithotomie
1982
Lage und Ausdehnung eines Nierensteines konnen seine transparenchymatose Entfernung notwendig machen. Auch bei ausgedehnter Ausgussteinbildung sind dann selbst mehrfache radiare, periphere Nephrotomien [1], die mit einer Pyelokalikotomie kombiniert werden konnen, parenchymschonender als die anatrope Nephrotomie [2]. Unabhangig von der Art des transparenchymatosen Zugangs war in jedem Fall eine temporare Unterbrechung der arteriellen Blutzufuhr zur Niere notwendig, um die Operation ubersichtlich und den Blutverlust gering halten zu konnen. Durch eine anatomie-orientierte Schnittfuhrung an der Niere wird diese Masnahme uberflussig.
Konkremente der Prostata
1982
Prostata-Steinen wurde wegen ihrer im Vergleich zu Harnsteinen geringen klinischen Bedeutung bisher wenig Beachtung geschenkt. In einer neueren Studie (Spector (1)) wurde die Calcifizierung der corpora amylacea zu corpora calculi verfolgt und endogene, primar im Prostata-Milieu gebildete Konkremente von exogenen, aus Harnabscheidungen in der Prostata gebildeten unterschieden.
Il "Potlatch" scolastico
1982
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