showing 36 of ~574560 from 574555 documents

El enclavamiento condilocefalico en el tratamiento de las fracturas pertrocantereas de cadera. Estudio comparativo de metodos rigidos y elasticos med…

1987

Se realiza un estudio experimental entre los enclavijamientos condilocefálicos (Técnica de Küntscher) y elásticos (Técnica de Ender), utilizando modelos de extremidad proximal de fémur de Araldite aplicando técnicas de fotoelasticidad a fracturas estables e inestables. Los resultados permiten afirmar que los enclavijamientos elásticos representan mejor las condiciones bioquímicas del fémur anatómico que los rígidos.

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]

Fetal Renal Effects of Intrauterine Diuretic Application in Wistar Rats

1987

The application of placenta-permeable diuretics in the pregnant woman has been the subject of controversial discussion (Friedberg 1980; Souster and Emery 1980). Not only is the fetus endangered by potential placental ischaemia, natrium and potassium loss and possible dehydration in the mother (Friedberg 1980; Gant and Madden 1975), but also induced effects on fetal organ formation should be considered (Frohneberg and Hutschenreiter 1982; Seufert 1986). Depending on the site of action and placental permeability, fetal urine production can be increased (Wladimiroff 1975), thus leading to consequences for the morphological and functional embryogenesis of isolated nephron sections (Frohneberg 1…

medicine.medical_specialtyFetusbusiness.industrymedicine.medical_treatmentEmbryogenesisIschemiaNephronmedicine.diseasemedicine.anatomical_structureEndocrinologyInternal medicineDiabetes insipidusMedicineDiureticbusinessSite of actionFetal organ

Prevention of Upper Gastrointestinal Bleeding in Cirrhotic Patients

1987

The prevalence of varices in patients with cirrhosis is stated to be about 50% and the risk of variceal bleeding 40% with mortality ranging from 30% to 60%. Differences may be due to patient selection and diagnostic criteria. The death risk of first bleeding seems to be higher than that of subsequent episodes (Christensen et al. 1981; D’Amico et al. 1986), indicating that the first bleeding episode causes a selection.

Gastrointestinal bleedingmedicine.medical_specialtyVariceal bleedingCirrhosisbusiness.industrymedicine.diseaseGastroenterologyEsophageal varicesInternal medicinemedicinePortal hypertensionIn patientUpper gastrointestinal bleedingbusinessVarices

Circadian and photoperiodic correlation between the number of pineal gland synaptic ribbons and serum melatonin levels in the rat.

1987

A study is made of the number of pineal gland synaptic ribbons in 35 maleWistar rats over a 24-hour period during the months of September and February, in correlation to the serum melatonin levels during the same periods and photophases.The results of the study confirm those reported by others authors and suggest that the synaptic ribbons may be the stimuli-transmitting organs facilitating pineal secretory function.

Maleendocrine systemmedicine.medical_specialtyPeriodicityHistologyLightPeriod (gene)BiologyPineal GlandSynapseMelatoninPineal glandInternal medicinemedicineAnimalsCircadian rhythmMelatoninphotoperiodismRats Inbred StrainsCircadian RhythmRatsmedicine.anatomical_structureEndocrinologynervous systemSynapsesAnatomyhormones hormone substitutes and hormone antagonistsmedicine.drugActa anatomica

Актуальные проблемы физики и химии сегнетоэлектриков

1987

Объектом исследований являются монокристаллические и поликристаллические сегнетоэлектрики. Изучение свойств одного из основных классов сегнетоэлектриков дает ценную информацию как для фундаментальной науки, так и для решения ряда прикладных задач, например, по созданию элементов для электрооптики и нелинейной оптики пиродетекторов и электромеханических преобразователей.

Cietvielu fizikaФизика твердого телаСегнетокерамикаСегнетоэлектрики:NATURAL SCIENCES::Physics::Atomic and molecular physics::Molecular physics [Research Subject Categories]Сегнетоэлектрические материалыSegnetoelektrībaSegnetoelektriķi

Tipología y distribución de la muerte violenta en el partido judicial de Valencia en un periodo de 27 años y una muestra de 14.324 autopsias judicial…

1987

Sociology Criminology and PenologyUNESCO::CIENCIAS MÉDICASAnthropology Medical and Forensic:CIENCIAS MÉDICAS [UNESCO]

Three physical quantum manifolds from the conformal group

1987

PhysicsConformal field theoryConformal symmetryQuantum electrodynamicsRicci-flat manifoldMass–energy equivalenceQuantumConformal geometryConformal groupMathematical physics

Präventive Sportmedizin — Plädoyer für eine neue Betrachtungsweise

1987

Kursbestimmung und Standort der Sportmedizin sollten als Leitthema dieses Kongresses Anlas sein, auch uber den praventivmedizinischen Wert des Sports nachzudenken, selbst wenn bei vielen Sportmedizinern — mit dem entsprechenden Echo bei Krankenkassen, Gesundheitspolitikern und DSB — ein hoher praventivmedizinischer Wert sportlicher Aktivitaten unstrittig zu sein scheint. Arztlich empfohlene Vorsorgemasnahmen mussen jedoch neben hoher Effizienz moglichst geringe Nebenwirkungen haben. Die Problematik eines Effizienz-Nachweises sportlicher Aktivitaten im Hinblick auf Vorbeugung gegen Zivilisationskrankheiten soll hier nicht vertieft werden; doch durften Rauchen, Bluthochdruck und Stoffwechselk…

Aspectos paleontológicos del Muschelkalk de la zona de Calanda (Provincia de Teruel)

1987

El hallazgo de numerosos fósiles en el Muschelkalk superior del anticlinal de Calanda, motivó la realización de un muestreo detallado del mismo, así como el estudio de su bio-microfacies. Referente a la macrofauna, se hallan bien representados los bivalvos y en general con buen estado de conservación. Las especies Pseudocorbula gregaria (MUSTER), Placunopsis teruelensis WURM, Lakevellia subcostata (GOLDFUSS), Modiolus myoconchaeformis (PHILIPPI) y Gervillia joleaudi (SCHMIDT) son elementos muy característicos de las «Capas de Royuela» que constituyen los niveles terminales del Muschelkalk en toda la Cordillera Ibérica. Se hallan, aunque con menor número de ejemplares las especies Entolium d…

Paleontología

Cathepsin D: A possible biochemical marker for anthracycline cardiomyopathy

1987

This study was carried out in an attempt to assess the pattern of cathepsin D variations induced by Doxorubicin (DXR) and to clarify the role possibly played by this endopeptidase in the onset of anthracyclines-induced cardiotoxicity. We evaluated the variations in both total and 'sedimentable' enzyme activity of cathepsin D in the heart of mice treated once a week for up to 8 weeks with DXR (4 mg/kg i.v.b.wt.) and sacrificed 12h, 3 and 6 days after 1, 4, 5 and 8 administrations. Our results show that significant but transitory changes in both total and sedimentable activity of cathepsin D occur after each administration and decline after prolonged treatments. These data do not suggest, but…

DoxorubicinCathepsin DCardiotoxity

Aspecto general y evolución del consumo y de la renta en Andalucía

1987

Espagne[SHS.EDU]Humanities and Social Sciences/Education[SHS.EDU] Humanities and Social Sciences/EducationÉvolutionRevenu[SHS.ECO]Humanities and Social Sciences/Economics and Finance[SHS.ECO] Humanities and Social Sciences/Economics and FinanceConsommation

Komplikationen bei 229 retroperitonealen Lymphadenektomien

1987

Im Rahmen einer retrospektiven Studie ermittelten wir Komplikationsrate, Komplikationsart und stadienabhangiges Verteilungsmuster der Komplikationen bei der retroperitonealen Lymphadenektomie (RPLA).

A novel photochemical 1,4-acyl migration in enol esters. The photolysis of enol acetates of 3-phenylpropiophenones

1987

Abstract Photolysis of the enol acetates 1a,b gives the 1,4-diketones 4a,b by a mechanism involving a primary homolytic carbonyl—oxygen bond cleavage, followed by 1,2-hydrogen shift and in cage recombination.

chemistry.chemical_classificationDiketoneKetoneCarboxylic acidOrganic ChemistryPhotodissociationPhotochemistryBiochemistryEnolHomolysischemistry.chemical_compoundchemistryDrug DiscoveryAliphatic compoundBond cleavageTetrahedron Letters

A Powerful Tool to Study Collisional Phenomena and for Combustion Applications - the High-Resolution Stimulated Raman-Spectroscopy

1987

0302-0738

El metabolismo de los hidratos de carbono en cultivo primario de hepatocitos de rata mantenidos en un medio químicamente definido

1987

El hígado es un órgano altamente diferenciado que desempeña un papel esencial en el organismo al ser el centro metabólico por excelencia, responsable de la elaboración y distribución de nutrientes. El hepatocito podría considerarse como célula diferenciada típica, dado que es capaz de expresar gran número de funciones altamente especializadas, cuya actividad se modifica cualitativa y cuantitativamente in vivo en respuesta a diferentes condiciones fisiológicas. El importante potencial metabólico del hígado incluye funciones que son características y se consideran órgano-específicas como son; a) la síntesis y excreción de proteínas plasmáticas, b) la producción y almacenamiento de sustratos e…

UNESCO::CIENCIAS DE LA VIDA:CIENCIAS DE LA VIDA [UNESCO]

Mise au point sur les techniques d'extraction et de separation des constituants volatils du vin

1987

National audience

[SDV] Life Sciences [q-bio]TECHNIQUE D'EXTRACTION[SDV]Life Sciences [q-bio]GAZ CARBONIQUEComputingMilieux_MISCELLANEOUS

First Antiprotons in an Ion Trap

1987

Measurements of the antiproton mass[2,3,4,5] are represented in Fig. 1. All of these are deduced from measurements of the energy of x-rays radiated from highly excited exotic atoms. For example, if an antiproton is captured in a Pb atom, it can make radiative transitions from its n = 20 to n = 19 state. The antiproton is still well outside the nucleus in this case, so that nuclear effects can be neglected. The measured transition energy is essentially proportional to the reduced mass of the nucleus and hence the antiproton mass can be deduced by comparing the measured values with theoretical values, corrected for QED effects. The most accurate quoted uncertainty is 5 × 10-5 and is consisten…

Nuclear physicsPhysicsProtonAntiprotonExcited stateAtomPhysics::Accelerator PhysicsPhysics::Atomic PhysicsElectronReduced massNuclear ExperimentStorage ringExotic atom

Transport of mRNA from Nucleus to Cytoplasm

1987

Publisher Summary Transport of mRNP (messenger ribonucleoprotein) from nucleus to cytoplasm plays an important role in gene expression in eukaryotic cells. This chapter focuses on energy-(ATP)-dependent mRNP transport. Nucleocytoplasmic transport of ribosomal RNA can also be induced by ATP, but also occurs by varying [Ca 2+ ]:[Mg 2+ ]. Release of ribosomal RNPs seems to be accompanied by an expansion of the nucleus. Nucleocytoplasmic transport of mRNA seems to be also distinct from the export of tRNA or the exchange of snRNPs and proteins across the nuclear envelope. Nucleocytoplasmic transport of tRNA seems to involve a facilitated diffusion mechanism, showing saturability and sequence spe…

Messenger RNPCell nucleusmedicine.anatomical_structureBiochemistryCytoplasmNucleocytoplasmic TransportmedicinesnRNPNuclear poreBiologyNuclear export signalNucleusCell biology

Fiskalpolitik, Staatsverschuldung, Inflation

1987

Seit Mitte der 70er Jahre zeichnen sich die westlichen Volkswirtschaften durch hohe Inflationsraten, niedrige Investitionsquoten und eine enorme Neuverschuldung der offentlichen Hande aus. Daraus ergeben sich Fragen nach den Zusammenhangen zwischen der Kapitalakkumulation, dem Defizit und der Hohe der Staatsschuld sowie der Inflationsrate.

Spectroscopic study of the aluminium/lumogallion system in the presence of non-ionic surfactants

1987

Abstract The effects of different non-ionic ethylene oxide condensate surfactants on the fluorescence and the molecular absorption of the aluminium/lumogallion system are reported. Ethylene oxide condensates with fatty alcohols give higher micellar enhancement factors than tert-octylphenols or nonylphenols; ethylene oxide/propylene oxide copolymers provide only a 50% increase in the fluorescence of the complex. The aluminium/lumogallion seems to form mixed micelles with the fatty alcohol condensates; the strong complex/micelle interaction provides increased absorbance of the complex at 500 nm and higher fluorescence enhancement, allowing the detection of 0.11 μg l −1 aluminium.

Ethylene oxideChemistryInorganic chemistrychemistry.chemical_elementFatty alcoholBiochemistryMicelleFluorescenceAnalytical ChemistryAbsorbancechemistry.chemical_compoundAluminiumCopolymerEnvironmental ChemistryPropylene oxideSpectroscopyAnalytica Chimica Acta

Profesors Jānis Strautmanis: personālais bibliogrāfiskais rādītājs

1987

Saturs: Priekšvārds. Juridisko zinātņu doktors profesors Jānis Strautmanis. Profesora Strautmaņa publicētie darbi (1959. - 1987.) Profesora J. Strautmaņa rediģētie un recenzētie darbi. Raksti par profesoru J. Strautmani. Profesora J. Strautmaņa publicēto darbu alfabētiskais rādītājs. Personu rādītājs.

Tiesību zinātņu profesori Latvijas UnivesitātēProfessors of the Latvian UniversityHistory of the University of Latvia:LAW/JURISPRUDENCE [Research Subject Categories]Civilprocesuālās tiesības - bibliogrāfiskais rādītājsBibliogrāfiskie rādītājiCiviltiesības - bibliogrāfiskais rādītājsLatvijas Universitātes vēstureLatvijas Universitātes profesoriP. Stučkas Latvijas Valsts universitātes profesori

Multiple Matched Spatial Filter Performed With Nonsymmetrical Fourier Transformers

1987

MULTIPLE MATCHED SPATIAL FILTER PERFORMED WITH NONSYMMETRICAL FOURIER TRANSFORMERSCARLOS FERREIRA and CARMEN VAZQUEZDepartamento de Optica. Universitat de Valencia.C/ Dr. Moliner, 50. 46100 Burjassot, Spain.1. INTRODUCTIONClassical matched spatial filters (CMSF) have been successfully employed for optical pattern recog-nition. To detect different signals, multiple matched spatial filters can be synthesized and several me-thods to perform the filters have been developed. Based on the sensitivity to input orientation of CMSF,we proposed a filter [1] where the signals to be detected were rotated by different angles when recordingthe hologram. Thus, the recognition of a signal is only achieved …

Spatial filterbusiness.industryMatched filterHolographyFilter (signal processing)law.inventionsymbols.namesakeOpticsFourier transformlawOptical correlatorsymbolsDetection theorybusinessOptical filterMathematicsSPIE Proceedings

Energie solaire et production

1987

National audience

[SDV] Life Sciences [q-bio][SDV]Life Sciences [q-bio]RAYONNEMENT PARComputingMilieux_MISCELLANEOUS

Differentielle pulse-polarographische Bestimmung von Arsen nach Ausschütteln des Arsen(III)chlorids

1987

Mikrogramm-Mengen von Arsen(III) konnen nach Ausschutteln mit Benzol aus salzsauren Losungen mit der differentiellen Pulse-Polarographie bestimmt werden. Die polarographische Bestimmung kann entweder direkt im organischen Extrakt nach Zusatz einer nichtwasrigen Grundlosung oder nach Verdampfen der organischen Phase uber einer wasrigen Grundlosung durchgefuhrt werden. Die Bedingungen fur die Reduktion des Arsens(V) in schwefelsauren Aufschluslosungen zum anschliesenden Ausschutteln und fur die polarographische Bestimmung werden angegeben.

ChemistryClinical BiochemistryGeneral Materials ScienceGeneral MedicineBiochemistryAnalytical ChemistryNuclear chemistryFresenius' Zeitschrift für Analytische Chemie

Por una estética sociológica : la perspectiva anarquista

1987

UNESCO::CIENCIAS DE LAS ARTES Y LAS LETRASSociology Social Structure and Development:CIENCIAS DE LAS ARTES Y LAS LETRAS [UNESCO]Aesthetics

Breve historia de los impuestos sobre juegos

1987

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Roturas traumaticas del ligamento colateral medial de la articulacion metacarpo-falangica del pulgar (lesion de stener) : a proposito de 30 casos tra…

1987

Thirty cases of rupture of the ulnar-collateral Iigament of metacarpal phalangeal joint of the thumb (Stener's lesion) are reported. The biomecanics of this ligament and the mechanisms of its rupture as well as the most frequent anatomopatologic types are described. The importance of the surgical treatment and sorne details of its technique are emphasized.

body regionsmusculoskeletal diseasesUNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]

Harnsteinanalytik — Routine und Sonderfälle

1987

Jeder Harnstein sollte analysiert werden. Das Ergebnis sollte eine Phasenanalyse sein, das heist es ist anzugeben, welche kristallisierten chemischen Verbindungen in welchen ungefahren Mengenverhaltnissen (± 5..10%) vorhanden sind. Die quantitative chemische Analyse ist fur diese Routineaufgabe zu aufwendig. Die qualitative chemische Analyse (handelsubliche Analysenpackungen) weist nur — und nicht immer sicher — Ionen nach und kann daher zu Fehlinterpretationen fuhren. Methoden der Phasenanalyse sind die Pulver-Rontgendiffraktion und die IR-Spektroskopie. Bei der Diffraktion wird das Kristallgitter der kristallinen Verbindungen als ein nach Beugungswinkeln und Intensitatsverhaltnissen chara…

Facteurs institutionnels de la diversité des carrières scolaires

1987

Marie Duru, Alain Mingat : Institutionelle Faktoren der Diversität der Schullaufbahnen. Der Aufsatz möchte die mit Hilfe einer strengen Methodologie erzielten empirischen Ergebnisse in die zentrale Debatte in der Erziehungssoziologie bringen, und zwar in Bezug auf das Entstehen von sozialen Ungleichheiten in den Schülerlaufbahnen. Er versucht besonders das jeweilige Gewicht zu quantifizieren in den Ungleichheiten des Erfolgs im Schulsystem, Ungleichheiten wie sie nach und nach im Laufe des Schulkursus auftreten, und andererseits in den Verhaltens— und Institutionsungleichheiten, die innerhalb sehr kurzer Zeitabschnitte bei der Orientierungswahl entstehen. Es wird gezeigt, dass die Erfolgsun…

Sociology and Political ScienceOrientation scolaire4. Education[SHS.EDU]Humanities and Social Sciences/Education05 social sciences[SHS.EDU] Humanities and Social Sciences/Education050301 educationSociologie de l'éducationSystème éducatifInégalité socialeInégalité des chances0502 economics and businessÉlèveCarrière scolaireÉducation0503 education050203 business & managementDifférenciation sociale

Modificaciones histoquimicas de la fisis proximal tibial de ratas sometidas a stress emocional cronico

1987

Se realiza un trabajo experimental con 50 ratas machos de un mes de edad. la mitad de las cuales se somete a stress crónico mediante restricción de su espacio vital. Tras ser sacrificadas al cabo de 1, 2, 4, 8 Y 12 semanas se estudió la presencia de proteoglicanos sulfatados en la fisis tibial proximal con la técnica del azul alcián. Los resultados demuestran que desde la primera semana las ratas stressadas presentaron una escasa apetencia por el colorante azul en casi toda la fisis, salvo en los núcleos de la capa hipertrófica. Esta característica se mantuvo durante toda la experiencia. Los animales controles mostraron una gran captación inicial que fue perdiéndose progresivamente hasta se…

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]

Un análisis de la aplicación de las técnicas de interferometría con luz láser al estudio de las deformaciones en ortodoncia

1987

:FÍSICA [UNESCO]UNESCO::FÍSICAPhysics Optics

Совершенствование управления производственными объединениями в новых условиях хозяйствования

1987

В сборнике рассматриваются методические вопросы совершенствования управления и планирования в различных звеньях народного хозяйства союзной республики - межотраслевые комплексы, отрасли, производственные объединения в промышленности. Для этих целей авторы предлагают применять различные экономические методы, математический аппарат и ЭВМ.

Хозяйственная деятельностьУправление производствомПроизводственные объединенияСоциально-экономическое развитие:SOCIAL SCIENCES::Business and economics [Research Subject Categories]Управление межотраслевыми комплексамиПланированиеRažošanas apvienību menedžments

Binucleate cells in the Ehrlich ascites tumor. Action of 5-fluorouracil.

1987

Time-dependent frequency distribution of binucleate cells (BC) was studied in Ehrlich ascites tumor (EAT) growing in mice. In animals that received no further treatment, the number of BC increased slowly from 2.6% to 16.5% of total cells within 8 days. In animals that were treated with different doses of 5-fluorouracil (FU) we found clearly higher numbers of BC. The number of BC increased with tumor age. The increase observed after treatment was reached more quickly in animals that had received the highest FU dose. The final number of BC was also dependent on the age of the tumor at the time of FU injection.

Cell NucleusDose-Response Relationship DrugCell BiologyGeneral MedicineBiologyPharmacologyEhrlich ascitesMiceFluorouracilImmunologymedicineMitotic IndexDistribution (pharmacology)AnimalsFemaleFluorouracilCarcinoma Ehrlich TumorAfter treatmentmedicine.drugBiology of the cell

Bibracte, capitale des Eduens, 1er siècle av. J.-C

1987

International audience

[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and PrehistoryComputingMilieux_MISCELLANEOUS

Les fibules des âges du Fer de Velem Szentvid

1987

International audience

[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and PrehistoryComputingMilieux_MISCELLANEOUS

Fiskalpolitik Kontrovers: Ein Überblick

1987

Die wirtschaftspolltischen Aktivitaten des Staates sind immer kontrovers beurteilt worden. Im Wechsel der Geschichte wurden sie entweder positiv oder negativ bewertet. In neuerer Zeit werden die wirtschaftspolitischen Masnahmen (unter gewissen Voraussetzungen) auch als neutral angesehen; die staatliche Wirtschaftspolitik hat demnach keinen Einflus auf die realen Variablen der Okonomie, zumindest nicht langfristig.1 Zuerst soll ein kurzer Uberblick uber die Bedeutung der staatlichen Ausgaben bei den Merkantilisten und den Klassikern gegeben werden; dann wollen wir auf die Bedeutung der Staatsausgaben fur die Stabilisierung der Konjunktur eingehen. Abschliesend sollen das aggregierte klassisc…