showing 36 of ~574560 from 574555 documents

La colonización fenicio-púnica de Ibiza : los siglos VII y VI a.J.C.

1987

History European:GEOGRAFÍA [UNESCO]History AncientUNESCO::GEOGRAFÍA

Un modelo de determinaciones en política curricular : estudio del origen social del curriculum tecnoburocrático en España

1987

UNESCO::FILOSOFÍA:FILOSOFÍA [UNESCO]Education Curriculum and InstructionEducation Business

Appunti sulla condizione della donna nella letteratura dell’età augustea

1987

Attraverso l'esame dei testi di Virgilio e degli elegiaci latini, concludo che il codice comportamentale femminile,sostenuto ed esaltato dagliscrittori del tempo era esattamente quello imposto dalla politica augustea che mirava a ripristinare la figura della matrona dei tempi antichi,moglie e madre.

antichitàuniviradonna

Universidades españolas y americanas. Época colonial [Prólogo]

1987

-

Historia de las universidades

El "Llibre d'òbits" de Santa Ana de Alcover (Tarragona) (notas para la historia de una comunidad franciscana, 1532-1835)

1987

ANALISIS DEL MANUSCRITO 1252 DE LA BIBLIOTECA DE CATALUÑA. CONTIENE EL NECROLOGIO DEL CONVENTO DE SANTA ANA DE ALCOVER (TARRAGONA). EL LIBRO APORTA UNA SERIE DE DATOS HISTORICOS Y RELIGIOSOS DE LA COMUNIDAD FRANCISCANA TARRACONENSE. EL NECROLOGIO ES UNA FUENTE MUY IMPORTANTE PARA ESTUDIAR LA SOCIOLOGIA DE UN CONVENTO DE LOS DENOMINADOS "RURALES". COMPLETAN EL ESTUDIO UNA SERIE DE APENDICES (A)

FranciscanosCargos religiososUNESCO::HISTORIA::Historia por épocas::Historia antiguaObituariosLugar de procedenciaConventos:HISTORIA::Historia por épocas::Historia antigua [UNESCO]

Paralisis aislada del serrato mayor : a propósito de dos casos

1987

The authors report two cases of Isolated Paralysis of the Serratus Anterior Muscle. The first case, traurnatic ethiology long thoracic nene. The second case neuralgic arnyarrophy.

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]

Time Courses of Erythrocytic Oxygenation in Capillaries of the Lung: Lower and Upper Bounds on Red Cell Transit Times

1987

With the aid of a 2-dimensional computer simulation (Groebe and Thews, 1986), time courses of erythrocytic oxygen uptake in the lung were calculated.

medicine.medical_specialtyLungRed CellChemistryTransit timeAnatomyOxygenationrespiratory systemOxygen uptakemedicine.anatomical_structureInternal medicinemedicineCardiologyShunt fractionBlood Circulation Time

L'entrée des jeunes dans la vie active en Bourgogne : intérêts et limites de l'enquête décentralisée sur l'entrée dans la vie active

1987

International audience

EnquêteEmploi des jeunes[SHS.EDU]Humanities and Social Sciences/Education[SHS.EDU] Humanities and Social Sciences/EducationBourgogneChômage des jeunesFranceMarché du travail des jeunesInsertion professionnelle des jeunesPassage à la vie activeComputingMilieux_MISCELLANEOUS

Gas-liquid chromatography and lipophilicity of esters of benzoic acids

1987

Abstract The use of gas-liquid chromatographic (GLC) retention indices for the determination of lipophilicity was studied for a series of alkyl and arylalkyl esters of substituted benzoic acids. The regression relationships between the logarithms of the partition coefficients and the retention characteristics measured on two cpillary columns, SE-30 and OV-351, were evaluated. The behaviour of arylalkyl esters and of alkyl esters cannot be expressed in terms of a single regression equation. This is probably a consequence of the effect of the intramolecular hydrophobic interaction upon the retention of arylalkyl esters under GLC conditions. An analysis of the isokinetic relationships revealed…

chemistry.chemical_classificationChromatographyChemistryOrganic ChemistryGeneral MedicineBiochemistryAnalytical ChemistryHydrophobic effectPartition coefficientEnthalpy–entropy compensationIntramolecular forceLipophilicityKovats retention indexOrganic chemistryGas chromatographyAlkylJournal of Chromatography A

Kult Karola Miarki od zarania po czasy najnowsze

1987

Historia de la educación : revista interuniversitaria

1987

Se exponen determinados aspectos relacionados con la infancia durante la Guerra Civil española. En concreto, se analiza el comportamiento de los niños en una guerra fratricida, en la que la infancia está sometida a presiones ideológicas. Expone la dificultad de los niños para entender el hecho de que aquel que ayer era ciudadano de una misma nación, hoy ya no lo sea, o que aquel que fue amigo, hoy deje de serlo. Las colonias de la guerra adquieren características de colonias permanentes, y no sólo para un mes de verano, asumiendo, sobre todo, el carácter de refugio protector de las calamidades de la guerra. Castilla y León Universidad de Salamanca. Facultad de Educación; Paseo de Canalejas,…

colonia escolarhistoria de la educaciónGuerra Civil (1936-1939)infanciaeducación de la primera infanciaguerraprotección a la infancia

Campagnards et citadins, de la Renaissance à la Révolution (Beauce, Drouais, Perche, Thymerais)

1987

Economia agrària i societat rural al País Valencià (1914-1923) : de les dimensions de la crisi a la resposta dels obrers del camp

1987

History European:GEOGRAFÍA [UNESCO]Economics AgriculturalRegional StudiesUNESCO::GEOGRAFÍA

Neue Urate: IV. Urate mit organischen Kationen

1987

In vorhergehenden Arbeiten (1, 2, 3, 6) wurde uber Urate mit anorganischen Kationen in Harnsteinen und aus synthetischen Ansatzen berichtet. Untersucht wurden nach einer kristallchemischen Systematik die Alkalien, Ammonium, Thallium, die Erdalkalien, Zink sowie Tetraalkylammoniumionen. Mischkristall-reihen, in denen ein Proton der Harnsaure (H2 U) innerhalb bestimmter Grenzen durch eines der genannten Kationen ersetzt wird, treten haufig auf. Ihre allgemeine Formel ist Me x/n n+ H(2−x)U.(H2O)y (I), mit Me = Kation der Ladung n+, U = Urat2−-Anion, x ≤1, das heist es wurden nur die im physiologischen Ham-pH-Bereich vorkommenden sauren Urate der Grenzformel Me 1/n n+ HU.(H2O)y untersucht. (Bei…

Positrons and Electrons Emitted in Elastic and Dissipative Heavy Ion Collisions

1987

The main research line of the Tori group is the study of the reaction dynamics of dissipative collisions between heavy ions ia positron and electron spectroscopy. The last five years since the Lahnstein-Conference1 are marked for our group by the installation of a new experimental device for detecting positrons and electrons emitted in these collisions, the so-called Tori spectrometer2. The first part of this report is devoted therefore to describe the main characteristics of this apparatus.

PhysicsElastic scatteringPositronDissipative systemElectronImpact parameterAtomic physicsNuclear ExperimentElectron spectroscopyElastic collisionIon

Actividad mitotica del cartilago articular del conejo sometido a inmovilizacion y descarga

1987

The timidine H3 uptake in the mitosis index into the articular cartilage of the knee is studied in 7 growing rabits without weight bearing. The autoradiography shows that, after 48 hours of inmovilizatinn, the uptake of timidine H1 and the mitosis index is the same in the free knee. The actual role of the joint rnovements in the cartilaginous nourishment is discussed.

musculoskeletal diseasesUNESCO::CIENCIAS MÉDICASmusculoskeletal system:CIENCIAS MÉDICAS [UNESCO]

Affinage et qualite du gruyere de Comte. V. Influence de l'affinage sur la teneur en composes volatils

1987

Vingt-quatre fromages de type Gruyere de Comte ont ete analyses. Ces fromages proviennent d'une meme fromagerie et correspondent a 6 groupes de 4 fromages issus d'une meme fabrication, a savoir, 3 fabrications d'hiver et 3 fabrications d'ete. Les 4 fromages sont affines dans 4 caves differentes. 103 composes ont ete identifies avec certitude, appartenant aux classes de composes suivantes: des hydrocarbures aliphatiques et terpeniques, des methylcetones saturees et insaturees, des aldehydes satures, des alcools primaires et secondaires satures, des esters et des lactones. Une analyse de variance univariable montre que l'effet saison est preponderant, ce qui est confirme par une analyse en co…

[SDV.SA]Life Sciences [q-bio]/Agricultural sciences[SDV.SA] Life Sciences [q-bio]/Agricultural sciences[SDV.AEN] Life Sciences [q-bio]/Food and Nutrition0404 agricultural biotechnology13. Climate action010401 analytical chemistry04 agricultural and veterinary sciences[SDV.IDA] Life Sciences [q-bio]/Food engineering040401 food science01 natural sciencesComputingMilieux_MISCELLANEOUS0104 chemical sciencesFood Science

Temmeksen länsitornillinen tukipilarikirkko

1987

puukirkkoarkkitehtuuri

Электродинамика и механика сплошных сред

1987

Сборник посвящен решению нелинейных задач, исследованию электромагнитного, температурного и скоростного полей в МГД-машинах, индукционных и руднотермических печах; исследованию деформирования пластин и механических свойств армированных композитов. Нелинейность исследуемых процессов определяется наличием конвективного переноса количества движения и тепла, зависимостью характеристик среды от индукции магнитного поля и температуры, а также пластичностью среды.

КомпозитыМеханика сплошных средМагнитогидродинамикаЭлектродинамики:NATURAL SCIENCES::Physics [Research Subject Categories]Nepārtrauktas vides mehānikaЭлектромагнитное полеElektrodinamika

On the improved Estimation of the Compliance-Parameters of the Physiologically Closed Cardiovascular System

1987

The influence of the type of the sampling-schedule and of the system-excitation with respect to identifiability and estimation-accuracy of the compliance-parameters of a nonlinear model of the physiologically closed cardiovascular system will be investigated. Using the sensitivity-functions of the arterial systemic pressure with respect to the compliance-parameters it will be shown how to select the sample-schedule and system-excitation in order to get optimal estimation-accuracy.

Compliance (physiology)EstimationComputer scienceOrder (business)Control theoryQuantitative Biology::Tissues and OrgansNonlinear modelIdentifiability

Pan-African crustal evolution in the Nubian segment of northeast Africa

1987

PaleontologyPan africanGeology

Evolució de les formes cárstiques d'Absorció tancades dels plans del realenc de Carcaixent (Ribera Alta- País Valencià)

1987

Este artículo revisa las diferentes formas de absorción cerradas que aparecen en las calizas del área montañosa de Carcaixent (lapiaz, dolinas y poljes). Se realiza una descripción de los diferentes tipos de lapiaz intentando buscar el origen de su formación y el tipo de material donde aparecen con preferencia. Sin lugar a dudas, uno de los aspectos más significativos de la evolución cárstica de la zona son las capturas realizadas por los barrancos sobre los poljes, debido al progresivo avance de sus cabeceras por erosión remontante, vaciándolos de su contenido de terra rossa en mayor o menor medida, según las característic as de la caliza del lugar de localización.

UNESCO::HISTORIAGeografíaGeociencias. Medio ambienteGrupo B:HISTORIA [UNESCO]

L'utilisation des indicateurs de performance dans les universités : une enquête internationale

1987

International audience; Une enquête sur l'élaboration et l'utilisation des indicateurs de performance dans l'enseignement supérieur a été entreprise en 1985 dans le cadre du programme IMHE, auprès de 70 établissements appartenant à quinze pays. Elle a permis de montrer que plus d'une centaine d'indicateurs étaient utilisés mais que tous n'étaient pas des indicateurs de performance. Après une brève présentation de l'enquête, cet article propose d'abord plusieurs classements des indicateurs recensés afin de mieux les caractériser. Dans une deuxième temps, il est procédé à une analyse de l'utilisation de ceux-ci dans les principales décisions prises tant à l'intérieur des établissements que da…

Université[SHS.EDU]Humanities and Social Sciences/Education[SHS.EDU] Humanities and Social Sciences/EducationUtilisationIndicateur de performanceEnquête internationaleEnseignement supérieur

Valor del cultivo celular para el empleo de técnicas morfológicas y de biología molecular en el estudio de los tumores de células redondas de la infa…

1987

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]Biology MolecularBiology Cell

Pattern Formation During Dry Corrosion of Metals and Alloys

1987

About corrosion of metals and alloys, many exciting problems are not entirely solved. One of them concerns some morphological features such as, for example, stratified periodic structures that may appear, for example during the oxidation or sulfidation of metals and alloys. In this context, a high temperature corrosion kinetics is interpreted in terms of a bistable chemical system which can oscillate spontaneously if a feedback effect could exist. Some models analyse these patterning from a theoretical point of view. Stability analyses of the uniform standard steady state point out that it can be unstable by bifurcation and give rise to multilayered scales. Some non linearities, peculiar to…

Condensed Matter::Materials ScienceSteady stateMaterials scienceBistabilityChemical physicsMetallurgySulfidationPattern formationContext (language use)Stability (probability)BifurcationCorrosion

Nonlinear vibrations and hysteresis of micromachined silicon resonators designed as frequency-out sensors

1987

Experimental observation of nonlinear vibrations and hysteresis of micromachined silicon resonators is reported. The experimental results are explained using a simple model in which the restoring force acting in the resonator contains a small cubic term. The effects will impose a limit to the maximum amplitude which can be excited while still maintaining reliability of these devices as frequency-out sensors.

Materials scienceSiliconbusiness.industrychemistry.chemical_elementVibrationResonatorHysteresisNonlinear systemReliability (semiconductor)chemistrySemiconductorsLimit (music)Electronic engineeringOptoelectronicsRestoring forceElectrical and Electronic EngineeringbusinessMaterials

Estudio hormonal, morfológico y morfométrico del callo de fractura experimental, tras la irradiación con luz laser He-Ne de 632,8 nm.

1987

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]Engineering Biomedical

Valoracion de diversos parametros patogenicos clinicos y terapeuticos en un grupo de pacientes portadores de luxacion recidivante de hombro

1987

Los autores estudian en 43 pacientes afectos de luxación recidivante de hombro distintos parámetros clínicos y morfológicos predisponen tes. concluyendo que la afección es más frecuente en el varón (46 por 100). de edades comprendidas entre los 18 y los 27 años (55'5 por 100). luxación previa (70 por 100) y alteraciones morfológicas predisponentes (10 por 100). La técnica preferida fue la de Putti-Plat. y el hallazgo mas constante la luxitud del sistema capsulornuscular anterior.

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]

Modified photobehavior of carboxylic acid derivatives induced by protonation

1987

Abstract A series of carboxylic acid derivatives 1–6 containing a second interacting function have been converted into the corresponding O -protonated species or acylium ions upon treatment with 96% sulfuric acid or oleum, respectively, at room temperature. The resulting stable cations have been spectroscopically characterized and submitted to irradiation. Cis-trans photoisomerization was observed in the ionic speciesderived from trans -crotonic, fumaric and maleic acids, and maleic anhydride. By contrast protonated crotonolactone 5a+ was found to be photostable. Finally, protonated α-bromobutyrolactone 6a+ was clean and efficiently dehydrohalogenated to 5a+ upon irradiation. Since the norm…

chemistry.chemical_classificationPhotoisomerizationChemistryCarboxylic acidOrganic ChemistryMaleic anhydrideSulfuric acidProtonationBiochemistryMedicinal chemistryCis trans isomerizationOleumchemistry.chemical_compoundDrug DiscoveryOrganic chemistryAliphatic compoundTetrahedron

Carbonic anhydrase activity in a calcium-mobilizing epithelium of the crustacean Orchestia cavimana during molting

1987

We investigated the involvement of the enzyme, carbonic anhydrase, in the calcification-decalcification processes occurring in the posterior caeca of the midgut of the terrestrial crustacean, Orchestia cavimana, before and after exuviation. This enzyme was ultrahistochemically localized throughout the membranes of the caecal epithelium as well as extracellularly, i.e., within pre-exuvial calcareous concretions and postexuvial calcified spherules. During the molt cycle, the pattern of carbonic anhydrase activity in the posterior caeca was correlated with the calcium content at this level. Acetazolamide treatment in vivo inhibited about 50% of the calcium uptake during both pre-exuvial secret…

MaleHistologychemistry.chemical_elementCalciumEpitheliumCrustaceaCarbonic anhydrasemedicineAnimalsMolecular BiologyCarbonic Anhydraseschemistry.chemical_classificationbiologyHistocytochemistryReabsorptionMidgutCell BiologyGeneral MedicineEpitheliumAcetazolamideMedical Laboratory Technologymedicine.anatomical_structureEnzymeBiochemistrychemistrybiology.proteinCalciumAnatomyGeneral Agricultural and Biological SciencesAcetazolamideDigestive SystemMoultingmedicine.drugHistochemistry

Microvascular injury and repair in acute human bacterial pyelonephritis.

1987

Acute inflammatory cell-capillary endothelial cell interactions, related to injury and repair, were investigated light and electron microscopically in acute human bacterial pyelonephritis. In inflammatory infiltrate-adjacent microvessels, the small capillaries were completely occluded by leukocyte plugs and the large capillaries were densely filled with acute inflammatory cells adhering to the endothelium. Severe damage to small and large capillaries was observed around endothelium adherent, degranulated neutrophil granulocytes containing phagocytosed bacteria. There were spaces in the endothelium, degradation of the vascular basement membrane, of the perivascular interstitial matrix and of…

AdultMalePathologymedicine.medical_specialtyEndotheliumNeutrophilsKidneyFibrinPathology and Forensic MedicineNeovascularizationInterstitial spaceInterstitial matrixmedicineHumansMolecular BiologyAgedBasement membranebiologyNeovascularization PathologicPyelonephritisbusiness.industryCell BiologyGeneral MedicineBacterial InfectionsMiddle AgedCapillariesEndothelial stem cellMicroscopy Electronmedicine.anatomical_structureImmunologyAcute Diseasebiology.proteinFemalemedicine.symptombusinessBlood vesselVirchows Archiv. A, Pathological anatomy and histopathology

Górnośląskie kalendarze polskojęzyczne orężem walki plebiscytowej

1987

Fracturas de la meseta tibial

1987

100 cases of tibial condylar fracture are reported. The ethiological factors (age, sex, rnecanism), type of fracture and associated lesions were analysed. The authors agree with the HolI c1assification, 1967. The treatment is discussed

UNESCO::CIENCIAS MÉDICASmusculoskeletal system:CIENCIAS MÉDICAS [UNESCO]

Zerstörungsfreie Phasenanalyse dünner Oberflächenschichten mittels Konversionselektronen

1987

By use of an appropriate gamma radiation, conversion electrons may be produced by Mossbauer effect also in a depth below the sample surface deeper than the free path for inelastic electron scattering. Because the Mossbauer spectrum of the conversion electrons reflects the local phase composition, the recording of all electrons escaping from the surface allows an integral phase analysis of a layer of some 10–100 nm thickness. If only electrons within a narrow range of energy are recorded, a depth selective phase analysis is possible. The applicability of these two techniques of conversion electron spectroscopy is demonstrated by a few examples concerning oxidation and passivation of steel. C…

PassivationMössbauer effectChemistryClinical BiochemistryAnalytical chemistryGeneral MedicineElectronRadiationElectron spectroscopyAnalytical ChemistryMössbauer spectroscopyInelastic electron scatteringGeneral Materials ScienceAtomic physicsLayer (electronics)Fresenius' Zeitschrift für analytische Chemie

Manuscritos de humanistas e historiadores (s. XV-XVII) conservados en el fondo mayansiano del patriarca

1987

Nadie puede dudar, en el estado actual de nuestras investigaciones, que uno de los mejores conocedores del humanismo español fue Gregorio Mayans. Sus ediciones de Juan Luis Vives, Francisco Sánchez de las Brozas, Nebrija o Pedro Juan Núñez, lo demuestran con claridad. Más aún, su Specimen bibliothecae hispano-majansianae (Hannover, 1753) evidencia la posesión de obras impresas, pero también de manuscritos, de nuestros mejores humanistas. La biblioteca mayansiana se dispersó y hoy resulta muy difícil encontrar los manuscritos que el erudito utilizara en sus investigaciones. Dado que las grandes bibliotecas (Biblioteca Nacional de Madrid o Biblioteca Municipal de Valencia) disponen de mayores…

DP1-402HumanistasModern history 1453-D204-475Siglos XV-XVIIManuscritosReligious studiesHistory of SpainMayans y Siscar GregorioHistoriadoresBibliotecas privadasRevista de Historia Moderna

Fasermatrix und Plattenmatrix

1987

Bei der schonenden Demineralisierung von Harnsteinen mit geeigneten Losungsmitteln (2) kann die fruher als „Matrix“ bezeichnete filmbildende organische Substanz (Mukoproteine), die durchschnittliche 2.5% der Steinmasse ausmacht (1) in ihrer ursprunglichen Anordnung freigelegt werden (Abb. 1). Die These einer ursachlichen Funktion dieses Material als eine (steuernde) Matrix fur die Harnsteinbildung wurde schon von ihren ersten Beobachtern, Meckel von Helmsbach (11), Krache (9), Epstein und Nicolaier (4, 5) aufgestellt und spater, in den 60er bis 70er Jahren vor allem von den Arbeitsgruppen um Boyce und Vermeulen weiter verfolgt. Sie fiel in sich zusammen, als Vermeulen et al. (12) zeigten, d…