Percutaneous Nephrostomy in Obstructive Uropathy

1983

Since the original description by Goodwin in 1955, percutaneous nephrostomy (PNS) has assumed an important role in the management of obstructive uropathy. It was initially devised as an alternative to operative nephrostomy, but has now completely replaced the latter, for the following good reasons: 1. It can be done under local anesthesia. 2. It provides effective urinary drainage. 3. It carries an acceptable risk, with low morbidity and practically no mortality.

Nuclear Shape Transitions and Some Properties of Aligned-Particle Configurations at High Spin

1983

Two topics are addressed in this paper. First, we discuss the variation of shapes with spin and neutron number for nuclei in the N approx. = 88 transitional region. Second, we present comments on the feeding times of very high spin single-particle yrast states.

Regionalismi Heikki Turusen tuotannossa

1983

Вопросы теории и методологии научного познания

1983

El temporal de octubre de 1982 en el marco de las lluvias torrenciales en la cuenca baja del Júcar

1983

Notas de Diplomática: En torno a un opistógrafo del siglo XVI de la diócesis de Urgell

1983

Aetiology of Kidney Tumours

1983

Surveys of possible aetiological factors were made by one of us in 1963 and in 1967 (1,2), reviewing 441 articles hoping to find some clues to the causes of tumours of the kidney.

The Properties Of Commercial Alumina Base Materials And Their Effect On The Manufacture Of Active Porous Alumina Supports By Means Of Extrusion

1983

The behaviour of 60 commercial base aluminas (macrocrystalline non-porous gibbsites, microcrystalline non-porous and porous boehmites, thermally activated porous boehmites and gibbsites) was studied via paste processing and extrusion in order to produce active porous alumina pellets. The most decisive properties of the base materials with respect to extrusion were: the degree of dehydration, the mean of aggregate size, the shape of aggregate size distribution, the shape of aggregates, the size of primary crystallites and the specific surface area. The relevance of these properties to those of the final pellets, i.e. crushing strength, porosity, pore volume distribution and specific surface …

The role of accessory cells in polyclonal T cell activation. I. Both induction of interleukin 2 production and of interleukin 2 responsiveness by con…

1983

Recent studies from other laboratories have shown that concanavalin A (Con A) acts at two separate steps in polyclonal T cell activation: interleukin 2 (IL2) production, and induction of responsiveness to IL2. Using a combination of techniques for the depletion of accessory cells from lymph node T cells, we have investigated which of these steps, if not both, is responsible for the known requirement for accessory cells in the Con A response. It was found that with increasing T cell purification, first the ability is lost to produce sufficient levels of endogenous IL2, whereas induction of IL2 responsiveness can still take place. Further removal of accessory cells however yields a population…

La Pasión en dulce o el romanticismo de masa

1983

Le système technologie, marché du travail et gestion de la main d'oeuvre : l'exemple de l'industrie électrique et électronique française au Brésil

1983

Noves inscripcions llatines de Bejís i La Vall d'Uixó

1983

Les primeres norícies sobre l'epigrafia llatina de Bejís foren publicedes per F Diago en 1613, qui cita dues inscripcions aleshores conservades 'en la granja que lIaman Mas de Alcaydón'.

Surface Physics With Slow Positrons

1983

Recent progress in slow beam studies of positron-surface interactions is reviewed. The key physical phenomena are introduced, and the present knowledge of the parameters involved is reviewed. The potential of the slow positron technique for surface science is discussed.

Primeras consideraciones en torno a la preparación de un proyecto de enciclopedia de ciencias del hombre y de la sociedad

1983

La Pasión en dulce o el romanticismo de mas

1983

Aproximación al estudio de los canales de comercialización de la seda valenciana: el caso de la Baronía de Alberique (1749-1804)

1983

A través de una fuente hasta ahora inédita pretendemos analizar los canales habituales de comercialización de la seda valenciana. Los cuadernos de "sacas" recogen el control municipal sobre la primera operación de venta de la materia prima. La muestra se realiza sobre el ejemplo de Alberique, villa enclavada en una de las principales zonas productoras, y que permite extraer unas primeras conclusiones: la ciudad de Valencia absorbe una cantidad creciente de materia prima como consecuencias de la comercialización directa realizada por los cosecheros y de la actividad de comerciantes y fabricantes que acuden a la zona productora para su aprovisionamiento; otra considerable proción es acaparada…

Efficient computation of stable bifurcating branches of nonlinear eigenvalue problems

1983

Neutrinoless double electron capture as a tool to measure the electron neutrino mass

1983

Abstract A nucleus (Z, A) may capture two atomic electrons to become (Z − 2, A). For Majorana neutrinos this may occur with no neutrino emission, the process is a virtual mixing of the parent atom and the daughter atom with two electron holes. The process becomes real as the daughter atom de-excites. In some cases where the daughter nucleus is excited, the neutrinoless decay may be enhanced by its proximity to a virtual resonance. We identify the 112 Sn → 112 Cd transition as a good case. The no-neutrino lifetime for mν = 30 eV ranges from 1022 to 1027 years as a function of the insufficiently well determined distance to resonance. The signatures of the two- or no-neutrino modes are very di…

La teoría del yo en Ortega y Gasset

1983

Dice Gilbert Ryle en The Concept of Mind (1) que la Filosofía moderna se ha caracterizado por lo que califica como un "cartesianismo oficial" que, si no comparte exactamente los argumentos de Descartes, coincide con éste en sostener que la propia mente es la única realidad que cada cual conoce de modo inmediato, con una intimidad que hace lejano cualquier otro objeto · o ser humano y con una privaticidad que hace imposible una auténtica comunicación de nuestras propias ideas, sentimientos o experiencias..

Specificity and Restriction of T Cells in a System of Complementing Ir Genes

1983

The phenomenon of Ir gene control of immune responsiveness is intimately related to the fact that antigen-specific stimulation of T cells with the Lyt-1 surface phenotype requires the simultaneous recognition of both external antigen and Ia antigen on the surface of antigen-presenting cells. There is increasing evidence indicating that Ia antigens encoded for by the I-A and I-E/C subregions of the H-2 complex represent the products of Ir genes.

Regional Tectonic Setting and Geological Structure of the Rhenish Massif

1983

This chapter contains an outline of the geological history of the Rhenish Massif and the development of its margins and surrounding areas. Section 2.2 gives some main aspects of the development of the Variscan geosyncline and orogeny and a short description of the pre-Variscan geological history of this region. Since the end of the Variscan orogeny many different epeirogenetic processes have occurred here (Sect. 2.3). During these long geological times uplift and subsidence changed in the different parts of the Massif and in the surrounding areas.

Quantum beats from dressed three-level atoms

1983

Abstract By extending a previously developed unitary transformation technique to dress three-level atoms by a strong driving radiation field, we show that quantum beats can be induced by the presence of the driving field also when the decay channels lead from a singlet to a doublet of lower energy. A qualitative explanation of this effect is presented, which is based on the quantum theory of measurement.

Aroma components of pomaces and wine from the variety Muscat de Frontignan

1983

36 ref.; International audience

Viral Hepatitis — An Update

1983

In 1973, Feinstone and co-workers [52] were the first to report the visualization of virus-like particles by immune electron microscopy in acute phase stool specimens of human volunteers who developed hepatitis following inoculation with MS-1 strain of hepatitis A virus [18]. Soon thereafter morphologically identical particles were recovered from the stool of individuals acquiring hepatitis during natural outbreaks of the disease [39, 64].

DIMENSIONAL STABILITY OF REINFORCED MATRICES.

1983

Particulate fillers are often used to improve the dimensional stability of polymeric items obtained through processing techniques such as injection molding, deep drawing, hot stamping, etc. In these operations the material undergoes large multiaxial deformations which result in molecular orientation and remain as frozen-in stresses during cooling of the material. Once the formed objects are exposed to sufficiently high temperatures, various degrees of spring-back take place and subsequent changes in shape and dimension occur (1).

Los orígenes medievales de un impuesto moderno: la "quema"

1983

La fiscalidad valenciana es aún hoy un tema incompleto en nuestra historiografía. Con el presente trabajo pretendemos indagar el origen histórico y evolución posterior de un impuesto poco conocido y apenas investigado: la Quema, o dret de damnificats.

Niskociśnieniowa polimeryzacja etylenu wobec metaloorganicznych kompleksów Ti-Al modyfikowanych ligandami donorowymi

1983

Physics of Multiple-Charged Stored Ions

1983

The implementation of the ion-storage technique for the investigation of charge-exchange processes between multiple-charged ions and neutral atoms or molecules is described. The advantages and restrictions are discussed by the example of measurements on doubly and triply charged ions reacting with a neutral gas target or an atomic hydrogen beam.

Gas chromatographic separation of acetylated chlorinated phenols, guaiacols and catechols on an SE-30 quartz capillary column

1983

Fast atom bombardment and field desorption mass spectrometry: Comparative aspects of analytical development and bioanalytical application

1983

Isomerisierung von 2‐Alkoxycyclopropancarbonsäuren – Eine effektive Synthese von 4‐Oxocarbonsäuren

1983

(Z/E)-2-Alkoxycyclopropansaureester 2/3 werden aus Enolethern 1 und Diazoessigester hergestellt. Durch Verseifen entstehen die (Z/E)-2-Alkoxycyclopropancarbonsauren 4/5, welche in Wasser/Methanol Stereomutation zeigen. Diese Isomerisierung wird an (E)-2-Methoxy-2-phenyl-cyclopropancarbonsaure (5a) in deuterierten Losungsmitteln untersucht und mechanistisch interpretiert. Beim Erwarmen in Wasser/Methanol offnen sich die Verbindungen 4/5 quantitativ zu den entsprechenden 4-Oxocarbonsauren 6. Isomerisation of 2-Alkoxycyclopropanecarboxylic Acids – An Effective Synthesis of 4-Oxo Carboxylic Acids (Z/E)-2-2-Alkoxycyclopropanecarboxylic esters 2/3 were prepared from enol ethers 1 and ethyl diazoa…

Alterations of mechanical characteristics of human skeletal muscle during strength training

1983

To investigate the influence of strength training on the mechanical characteristics of human skeletal muscle, 14 male subjects went through training of combined heavy concentric and eccentric contractions three times a week for 16 weeks. The strength training program consisted mainly of dynamic exercises for leg extensors with loads of 80 to 120% of one maximum repetition. The force-time curves produced during various vertical jumps were the basis for calculation of various mechanical parameters. In addition to a great increase (p less than 0.001) in maximal isometric force, heavy resistance strength training also caused significant (p less than 0.05-0.01) increases in heights and in variou…

Antimykotische Wirkstoffe, 13. Mitt.1) Halogenphenoxy-1,3,5-triazine

1983

Die Umsetzung von 2,4-Dichlor-6-diethylamino-1,3,5-triazin (1) mit den halogenierten Phenolen 2a—f fuhrt zu den Halogenphenoxy-1,3-5-triazinen 3a—f, unter denen sich Vertreter mit antimykotischer Wirksamkeit finden. Die antimykotischen Eigenschaften sind besonders in 3b ausgepragt. Antimycotic Agents, XIII: Halophenoxy-1,3,5-triazines The reactions of 2,4-dichloro-6-diethylamino-1,3,5-triazine (1) with the halophenols 2a—f lead to the halophenoxy-1,3,5-triazines 3a—f which comprise compounds exhibiting antimycotic activity. In particular, compound 3b exhibits marked antimycotic effects.

Irreversible binding of acrylonitrile to nucleic acids

1983

1. [2,3-14C]Acrylonitrile was incubated with rat-liver microsomes, NADPH and either DNA, RNA or bovine serum albumin. Irreversible binding occurred to the macromolecular targets. Binding was lower when incubations were performed without microsomes. 2. Most of the 14C bound to DNA, RNA or polynucleotides (poly-A, poly-C, poly-G, poly-U) after incubation of [2,3-14C]acrylonitrile with rat-liver microsomes and 'conventional' re-isolation of the nucleic acids was removed from the macromolecular target when subsequently chromatographed on hydroxyapatite. 3. Radioactivity attached to DNA after prolonged non-enzymic incubations with [2,3-14C]acrylonitrile was also removed from the DNA by chromatog…

Enzymatic and pharmacokinetic studies on the metabolism of branched chain alpha-keto acids in the rat.

1983

Michaelis-constants and enzyme activities for dehydrogenation and transamination of the three branched chain alpha-keto acids in liver, kidney, skeletal muscle, and brain of rats are reported. After oral load only 11-22% of the keto acids pass the liver unchanged. Blood levels in pharmacokinetic and absorption studies are related to the Michaelis-constants. At the low keto-acid concentrations after oral application, dehydrogenation in the non-hepatic tissues is supposed to prevail over transamination. Data on feed efficiency of branched chain alpha-keto acids reported in the literature support this view. The chance for transamination is better after intravenous administration. The transfera…

Tin(II) Derivatives of 2,3-Dihydroxynaphthalene

1983

Abstract The reaction of aqueous solutions of tin(II) chloride and 2,3-dihydroxynaphthalene (H2A) gives a white precipitate of SnA. This compound has been characterized by chemical analysis, IR spectra and thermogravimetric analysis. A spectrophotometric study of tin(II) and H2A in DMF shows the formation of two species with stoichiometric ratios Sn:H2A 1:1 and 1:2.