showing 36 of ~574560 from 574555 documents

Analyse de la variabilité génétique mitochondriale et chloroplastique de deux espèces du genre Lupinus (L.Albus et L. Mutabilis)

1988

Notice présente dans BelInra (https://belinra.inra.fr/gestion/catalog.php?categ=isbd&id=90015); il s'agit d'un type de produit dont les métadonnées ne correspondent pas aux métadonnées attendues dans les autres types de produit : DISSERTATION; Analyse de la variabilité génétique mitochondriale et chloroplastique de deux espèces du genre Lupinus (L.Albus et L. Mutabilis)

amélioration génétiquechloroplaste adn[ SDV.BV ] Life Sciences [q-bio]/Vegetal Biologypurificationrefininglupinus mutabilissolvent free microwave extraction (sfem)méthode d'analysetarwiplante fourragèrelupinus albusplasmidelectrophoresisplasmideextraction[SDV.BV]Life Sciences [q-bio]/Vegetal Biology[SDV.BV] Life Sciences [q-bio]/Vegetal BiologyélectrophorèseADN mitochondrial

Mechanical And Thermophysical Properties Of Polymers And Chemical Structure: From Computer Simulations To Experimental Data

1988

Chemical structure is related to properties on the basis of results of computer modelling of mechanical behavior. An equation for the shift factor aT,c dependent on temperature T and concentration c is provided, connection to the chain relaxation capability noted, and potential application range of the approach discussed. Constituents of free volume are defined, and effects of individual constituents on mechanical properties.

chemistry.chemical_classificationMaterials sciencechemistryVolume (thermodynamics)Chemical physicsChemical structureExperimental dataRelaxation (physics)Computer modellingPolymerShift factor

Lesion of areas 17/18/19: effects on the cat's performance in a binary detection task

1988

The ability of two cats to discriminate between two geometrical outline patterns in the presence of superimposed Gaussian visual noise — i.e. in a binary detection task — was tested before and after bilateral removal of cortical areas 17, 18 and 19. The detection probability PD was measured as a function of the signal-to-noise ratio. After a lesion of areas 17, 18 and 19 both cats were unable to carry out the discrimination tasks. Their detection performance dropped to chance level, but after an extensive phase of retraining (3 months) they regained the ability to discriminate visual patterns. It was thus possible to obtain detection curves and to determine a measure of a performance which …

CommunicationCATSbusiness.industryGeneral NeuroscienceBrainBinary numberPattern recognitionForm PerceptionLesionTask (computing)Discrimination PsychologicalPattern Recognition VisualVisual patternsCatsImage noisemedicineAnimalsLearningDetection performanceFemaleArtificial intelligencemedicine.symptombusinessVisual CortexMathematicsExperimental Brain Research

Tratamiento funcional de las fracturas de tibia mediante enclavado de alineamiento y PTB

1988

The authors present 27 fractures of distal third of tibia treated by Ender and intramedullary, without reaming nailing and PTB, describing the surgical procedure. Clinical results obtained are excellent, as far as pain and mobility are concerned, with a 58'62% of anatomic radiologic axis, finding as the most frequent disturbances the varusm movement and shortening, being all of them minimal. The small rate of complication (6'89%) and sequels are to be taken as the most important results. This pmcedure is quite useful, since its low rate of infection, sudeck, trombosis, muscular atrophy and joint rigidity for the early loading, with a nule rate of pseudoarthrosis due to maximum preserving of…

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]

Patronato y patronos públicos en Hispania durante el Alto Imperio

1988

:GEOGRAFÍA [UNESCO]Caribbean StudiesUNESCO::GEOGRAFÍA

Incurvaciones congénitas de tibia : revisión de 15 casos

1988

15 patients with Congenital Kyphoscoliotic tibia are colected, with a follow up until 18 years. The authors used a prognosis criteria to classify and stablished the problem from every one on the groups in order to prognosis, evolutive and treatment. Key Words:

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]

Extraction and trace enrichment of genotoxicants from environmental samples by solid-phase adsorption on blue pearls

1988

Trace (semiology)ChemistryEnvironmental chemistryClinical BiochemistryExtraction (chemistry)General Materials ScienceGeneral MedicineSolid phase adsorptionAnalytical ChemistryFresenius' Zeitschrift für analytische Chemie

IBMF and IBFFM Approach to Nuclei in the A≃100 Region

1988

An overview of the calculations in IBFM and IBFFM for nuclei in the A ≃ 100 region is presented. The application to these nuclei with a complex structure including the rapid transition from spherical to deformed nuclear shapes provides a stringent test for the capacities of this theoretical approach. From the result of the studies of the heavy Yttrium isotopes and the N=59 isotones it is concluded that it can account for the basic structure and the phase transition in these nuclei.

Yttrium IsotopesPhysicsPhase transitionNuclear TheoryAtomic physicsNuclear Experiment

Long-Term Potentiation in Slices from Human Hippocampus

1988

Long-term potentiation (LTP) has been observed in slices from human hippocampi removed for intractable epilepsy using extra- and intracellular recording in vitro. Furthermore the effects of several neuroactive substances with possible relevance for synaptic plasticity was investigated. Human hippocampal neurones in vitro display properties very similar to the respective rodent cells.

Synaptic potentialnervous systemChemistrySynaptic plasticityHippocampus (mythology)Long-term potentiationPopulation spikeHippocampal formationNeuroscienceIntracellularIn vitro

Correlation of carnassial tooth size and body weight in recent carnivores (mammalia)

1988

The correlation between the lower carnassial crown area and the body weight is examined for modern carnivores. It is very high, but the ursids and felids show a relationship different from the other carnivore families. Some exceptions are discussed. The possibility of predicting body weight for fossils is given.

CarnivoraZoologyBiologyCarnivoreGeneral Agricultural and Biological SciencesBody weightCarnassialCarnassial toothHistorical Biology

Application of the Error Correcting Grammatical Inference Method (ECGI) to Multi-Speaker Isolated Word Recognition

1988

It is well known that speech signals constitute highly structured objects which are composed of different kinds of subobjects such as words, phonemes, etc. This fact has motivated several researchers to propose different models which more or less explicitly assume the structural nature of speech. Notable examples of these models are Markov models /Bak 75/, /Jel 76/; the famous Harpy /Low 76/; Scriber and Lafs /Kla 80/; and many others works in which the convenience of some structural model of the speech objects considered is explicitly claimed /Gup 82/, /Lev 83/, /Cra 84/, /Sca 85/, /Kam 85/, /Sau 85/, /Rab 85/, /Kop 85/, /Sch 85/, /Der 86/, /Tan 86/.

Computer sciencebusiness.industryWord recognitionError correctingArtificial intelligenceMarkov modelbusinesscomputer.software_genrecomputerGrammar inductionNatural language processing

Estabilidad y evolución de las fracturas trocantéreas tratadas con enclavamiento condilocefálico rígido

1988

195 patients with trochanteric fractures of femur treated with rigid intramedulary nailing are colected. They have studied the stability of the fractures, have taken as parameters the fracture's stability, femoral angle of inclination after the surgery and consolidation, reduction of the middle cortical of the fracture after surgery, consolidation and migration of the nail. The authors concluded that the technique provide a relative stability, the reduction during the surgery is the factor than determine the fracture's evolution. The best femoral angle of inclination is valgus and diastasis of the middle cortical of the fracture.

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

Els Boïl de la Scala: una història de familia

1988

Història del llinatge Boïl de la Scala, des del segle XIV, quan es converteixen en senyors de Manises, fins el segle XVIII, quan desapareix el llinatge per manca de descendencia masculina.

Noblesa

Die informierte Gesellschaft — Illusion oder Wirklichkeit?

1988

Die elektronisch bebilderte Information uber die Wirklichkeit verfuhrt zu Naivitat: „Ich habe es mit eigenen Augen gesehen“, und damit zu besonders groser Glaubwurdigkeit des Fernsehens. „Der reduzierte Blick“ (H. Imdahl) wird nicht bewust, die Tatsache, das die Fernsehkamera selektiert, was in das Blickfeld kommt. Die Selektion wird stark bestimmt durch die Einstellung von Journalisten. Da heute in wichtigen Fragen die Ansichten der Experten und der Journalisten oft weit auseinandergehen, die Medien aber vorwiegend die Ansichten der Journalisten spiegeln, entsteht das Problem der „informierten Gesellschaft“, die sich in vielfacher Weise als Illusion erweist.

Numerical Modelling of the Urban Climate

1988

Three-dimensional numerical models of the urban climate have been developed in order to simulate climatic changes and air pollution in urban regions due to anthropogenic activities. Two versions are presented. Model A covers mesoscale γ and uses the roughness length to characterize surface structure. The microscale version B approximates the actual urban build-up by rectangular blocks. Model A results agree reasonably well with observations. For complex building structures, the microscale model must be applied. Model B results on neutral flow and pollutant transport within a particular building configuration are discussed.

GeographyRoughness lengthMeteorologyUrban climateFlow (psychology)Air pollutionmedicinePollutant transportMesoscale meteorologySurface structuremedicine.disease_causeMicroscale chemistry

Aspectos geográficos en la obra de Antonio Bordázar de Artazu, impresor erúdito valenciano del siglo XVIII

1988

En el presente artículo se hace un recorrido por la obra manuscrita del impresor Antonio Bordázar de Artazu, último de los miembros del movimiento de renovación científica que tuvo lugar en València en el tránsito del siglo XVII al XVIII. Se atiende fundamentalmente a su contenido geográfico, intentando poner de relieve las influencias recibidas de los autores más significativos de la época y los aspectos más valiosos de la misma, esencialmente en su vertiente cartográfica. Por medio de todo ello se pretende su valorización adecuada y un acercamiento a los planteamientos de la Geografía a comienzos del siglo que marcaría su inflexión desde posiciones matemáticas y científicas hacia la línea…

GeografíaUNESCO::HISTORIAGeociencias. Medio ambienteGrupo B:HISTORIA [UNESCO]

Estudio anatomopatológico de la fibrosis de cuádriceps

1988

The authors analyzed the possible origin of bilateral quadriceps fibrosis in three patients; muscle biopsies were subjected to histochemical analysis to establish the histopathological alterations involved.

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]

Characterisation of disaccharide fragments from the enzymatic digestion of heparin by liquid secondary ion mass spectrometry

1988

Disaccharide fragments resulting from the enzymatic digestion of heparins with heparinase have been purified by gel filtration chromatography and directly analyzed by positive and negative ion liquid secondary ion mass spectrometry (LSIMS). Following the chromatographic purification from excess sodium salt, the mass spectra of di- and tetrasaccharide fragment mixtures enabled the identification of up to three covalently bound sulfate moieties per glycosaminoglycan-disaccharide unit, by means of their molecular ions, containing the corresponding alkali-counterions.

HeparinaseChromatographyChemistryClinical BiochemistrySize-exclusion chromatographyDisaccharideGeneral MedicineMass spectrometrySample preparation in mass spectrometryAnalytical ChemistrySecondary ion mass spectrometrychemistry.chemical_compoundMass spectrumTetrasaccharideGeneral Materials ScienceFresenius' Zeitschrift für analytische Chemie

Nota sulla fortuna dello sciamanismo greco

1988

La categoria antropologica dello sciamanismo, sviluppatasi in area aurasiatica, ha trovato spazio, a partire dagli anni '30 del Novecento, anche negli studi di antichistica allo scopo di spiegare testimonianza che presentavano forti analogie con la figura dello sciamano siberiano. Qui si ripercorre la fortuna di questa categoria interpretativa negli sudi di grecistica, mettendone in rilievo potenzialità e limiti.

Settore L-ANT/02 - Storia GrecaSciamanismo antropologia arcaismo greco Meuli

Revisión a corto y largo plazo de 70 pacientes portadores de necrosis a vascular de la cabeza femoral

1988

Los autores estudian 70 enfermos con necrosis avascular de la caheza femoral. De los cuales 11 eran bilaterales por lo que revisan un total de 81 cabezas. Estudian la enfermedad desde el punto de vista clínico y radiológico. haciendo una correlación entre ambos parámetros y una revisión bibliiográfica del tema.

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]

Estudio y aplicaciones analíticas de las reacciones de la cistina, cisteína y N-acetil-Lcisteína con el o-Ftaldehido

1988

UNESCO::QUÍMICAChemistry Organic:QUÍMICA [UNESCO]

Étude expérimentale de la conductivité électrique du molybdate de COBALT CoMoO4

1988

La conductivite electrique du molybdate de cobalt CoMoO4 a ete mesuree dans le domaine de temperature 100-600 °C, a partir d'echantillons pulverulents sous forme de pastille. Il a ete trouve que la variete a-CoMoO4 est un semi-conducteur de type p, tandis que la variete b-CoMoO4 est un semi-conducteur de type n.Differents mecanismes de conduction ont ete trouves en fonction de la variete polymorphique de CoMoO4 et de la pression partielle d'oxygene. Leur nature est discutee.

BiochemistryJournal de Chimie Physique

Blocks of the Trunk and Perineum

1988

Intercostal nerve block was derived from thoracic paravertebral block. Its origin can thus be traced to the beginning of the century (see Sect. VII. B).

business.industryPudendal nervemedicine.medical_treatmentfungiSacrospinous ligamentfood and beveragesAnatomyIntercostal nervesTrunkPerineummedicine.anatomical_structuremedicine.ligamentNerve blockMedicineParavertebral BlockbusinessIntercostal nerve block

Intravenous Regional Anesthesia

1988

Intravenous regional anesthesia was first described by Bier in 1908. The technique fell into disuse until 1963, when Holmes revived the technique by substituting lidocaine for procaine (see Sect. V. D, “Choice and Dosage of Agents”).

body regionsSmall saphenous veinProcaineLidocainebusiness.industryRegional anesthesiaAnesthesiamedicine.medical_treatmentMedicinebusinessIntravenous regional anesthesiamedicine.drug

Atypical 24-hour rhythms of serotonin N-acetyltransferase activity in the rat pineal gland.

1988

Previous long-term studies have shown that in the pineal gland of rats melatonin synthesis is subject to infradian rhythms with periods between 4 and 7 days. Since in these studies melatonin-related parameters were measured at one timepoint of a 24-hr cycle only, the aim of the present investigation was to extend these experiments by more frequent sampling, to characterize the infradian rhythmicity in more detail. Male Sprague-Dawley rats kept under a light schedule of LD 12:12 (lights on at 0700) were killed at 6-hr intervals on 8 consecutive days. After decapitation the pineal gland was rapidly dissected out, followed by measurements of one of the melatonin-forming enzymes, serotonin N-ac…

Maleendocrine systemmedicine.medical_specialtyPhysiologyArylamine N-AcetyltransferaseRats Inbred StrainsBiologyPineal GlandCircadian RhythmRatsRat Pineal GlandPineal glandmedicine.anatomical_structureRhythmEndocrinologyInfradian rhythmAcetyltransferasesPhysiology (medical)Internal medicinemedicineAnimalsSerotoninMelatonin synthesisCircadian rhythmSerotonin N-acetyltransferase activityChronobiology international

Dal romanzo alla scena: note intorno al personaggio femminile nella commedia settecentesca

1988

Il saggio esamina la rappresentazione del personaggio femminile nel teatro settecentesco, con particolare riferimento alle trasposizioni della "Pamela" di Richardson effettuate da Goldoni e Chiari. The essay examines the female characters' representation in eighteenth century's theatre, with special reference to the transpositions for the stage of Richardson's Pamela by Goldoni and Chiari.

Novel Theatre Richardson Goldoni ChiariSettore L-FIL-LET/14 - Critica Letteraria E Letterature Comparate

Pie plano valgo infantil : nuestra sistemática general de tratamiento incruento

1988

Los autores presentan en este trabajo la sistemática de tratamiento incruento utilizada por ellos en el pie valgo flexible infantil, considerando dos factores: a) El grado de la deformidad del pie valgo. b) La edad del niño, distinguiendo en ella dos períodos diferentes, niños de 1 a 3 años y desde los 3 a los 10 años. De acuerdo con estos factores, establecemos unos tipos estándar de pie valgo, adaptando a cada uno de ellos una pauta de tratamiento. La maniobra de corrección del valgo de talón descrita por Fonseca y Oliva, la consideramos como un parámetro fiable para predecir el resultado a obtener con el tratamiento incruento de un determinado pie. Enumeran una serie de condiciones que p…

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]

Solubility of some pesticides in supercritical CO2

1988

The solubility limits of some pesticides (Linuron, Methoxychlor, Diclofopmethyl, Diclofop and 2,4-D) and of 3,4-dichloroaniline have been determined in supercritical CO2 at 200 bar and 40° C, using the Milton Roy sample preparation accessory SPATM. Depending on the polarity and vapour pressure of the investigated compounds, the solubility was found to be between 0.3 and 12 gl−1.

ChromatographyVapor pressureClinical BiochemistrySupercritical fluid extractionMethoxychlorGeneral MedicinePesticideSupercritical fluidAnalytical Chemistrychemistry.chemical_compoundchemistryGeneral Materials ScienceSample preparationSolubilityBar (unit)Fresenius' Zeitschrift für analytische Chemie

Regularity of solutions of cauchy problems with smooth cauchy data

1988

Cauchy problemPure mathematicsCauchy's convergence testResidue theoremCauchy principal valueCauchy boundary conditionCauchy's integral theoremCauchy's integral formulaCauchy productMathematics

[Bis(dimethylsulphoxide) protium][trans-bisdimethylsulphoxidetetrachloroiridate(III)]

1988

Abstract [(DMSO)2H]trans-[IrCl4(DMSO)2] (DMSO = dimethylsulphoxide) has been structurally characterized. The hydrogen bonded cation [DMSOHDMSO]+ has a very short OHO bond distance (2.405 A) which compares well with that in the known rhodium analogue. The two DMSO ligands are trans on iridium and coordinate via the sulphur atoms. Earlier work had assigned the cis structure to the anion in this compound.

HydrogenChemistryStereochemistrychemistry.chemical_elementNuclear magnetic resonance spectroscopyCrystal structureMedicinal chemistrySulfurRhodiumInorganic ChemistryBond lengthX-ray crystallographyMaterials ChemistryIridiumPhysical and Theoretical ChemistryPolyhedron

Simultaneous and successive cognitive processes in brain damaged adults: Hemispheric and anterior-posterior effects

1988

The relationship between simultaneous and successive processing and their assumed underlying neuro-anatomical structures was examined. According to the model of Das, Kirby, and Jarman (1975, 1979) simultaneous processing, occurs mainly in the posterior parts of the brain (parieto-occipital areas) and successive processing in anterior regions of the brain (fronto-temporal areas). The theory of lateralized hemispheric specialization suggests differences in processing due to right-left hemispheric differences. A battery of measures was factor-analyzed and simultaneous and successive factors identified in 106 brain-damaged adults and a control group. The brain damaged group was divided into fou…

Psychiatry and Mental healthClinical PsychologyNeuropsychology and Physiological PsychologyLateralityNeuropsychologyCognitionGeneral MedicineAnalysis of varianceAnatomyAnterior posteriorPsychologyCognitive psychologyArchives of Clinical Neuropsychology

Amylases from orange leaves. Characterization and relation to starch breakdown.

1988

Starch content in adult orange (Citrus sinensis L. Osbeck) leaves was highest at the end of the winter rest period and decreased during flowering and fruit set. Young inflorescence leaves accumulated starch until the June drop period to decrease to a low value at the end of it. Both, α- and ß-amylase activities were found in the leaves and the enzymes separated through Sephadex G100 filtration. By electrophoresis in polyacrylamide gels with 0.25 % amylopectine, α-amylase was resolved in 5 bands, and ß-amylase in 7. Total amylolitic activity in the leaves was determined throughout the annual cycle in both adult and young leaves. Enzyme activities were not correlated with the rate of starch …

food and beveragesPlantes

Erfahrungen mit Explorativen und Konfirmativen Auswertungen Einer Prospektiven Schwangerschaftsstudie

1988

Die prospektive Mehrklinikstudie “Schwangerschaftsverlauf und Kindesentwicklung” wurde in zwei Teile geteilt: Im ersten explorativen Teil sollte systematisch nach Assoziation mit Unwelteinflussen gesucht werden. Im zweiten Teil sollten gefundene Assoziationen mit den ublichen Testverfahren bestatigt oder verworfen werden. Die Zweckmasigkeit dieses Verfahrens wird uberpruft.

Актуальные вопросы краевых задач. Теория и приложения

1988

В статьях сборника изучаются актуальные вопросы теории краевых задач обыкновенных дифференциальных уравнений. Исследованы вопросы разрешимости, единственности. Ряд статей посвящены изучению прикладных задач, возникающих в гидродинамике, акустике, в диагностике полупроводников.

Matemātiskā analīzeМатематический анализТеория краевых задачОбыкновенные дифференциальные уравненияФизика полупроводников:MATHEMATICS::Algebra geometry and mathematical analysis::Mathematical analysis [Research Subject Categories]DiferenciālvienādojumiДифференциальные уравненияГидродинамикаАкустика

La protection des droits de l'homme devant la justice maritime à l'époque révolutionnaire et impériale

1988

Histoire du droit[SHS.DROIT]Humanities and Social Sciences/Law[SHS.DROIT] Humanities and Social Sciences/Law[ SHS.DROIT ] Humanities and Social Sciences/Law

Rotura pura en la porción media del tendón rotuliano

1988

Se describe un caso de rotura traumática del tendón rotuliano en su porción media de la rodilla izquierda. Su mecanismo de producción fue indirecto por caída casual. Se describe la intervención reparadora con un buen resultado funcional.

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]