showing 36 of ~574560 from 574555 documents

Relevance of Tool Life Testing for Tool Replacement Strategies

1986

Several analytical and simulation models have been proposed in order to select the optimal tool replacement strategies both in single and multi-tool machining operations. All of these models, however, assume as known the probability density function that describes the stochastic behaviour of tool life. The costly efforts required in order to achieve an accurate estimate of the p.d.f. limits the use in the shop practice of the above models.

MachiningComputer scienceOrder (business)Simulation modelingRelevance (information retrieval)Probability density functionReliability engineeringLife testing

Presencia de culto griego en la desembocadura del Ebro: representaciones de Démeter en el Museo Municipal de Reus

1986

Humanidadeslcsh:Clcsh:Archaeologylcsh:CC1-960HistoriaUNESCO::HISTORIA::Ciencias auxiliares de la historia::Arqueologíalcsh:Auxiliary sciences of history:HISTORIA::Ciencias auxiliares de la historia::Arqueología [UNESCO]Sagvntum

The influence of ossein-hydroxyapatite compound ('Ossopan') on the healing of a bone defect.

1986

A study was undertaken in 60 adult rabbits in order to determine the effects of ossein-hydroxyapatite compound on bone healing. Standardized bony defects were produced in the distal femoral epiphyses, after which animals were randomized into four equal groups. An untreated group served as a control. One group received ossein-hydroxyapatite compound, 830 mg per day, a second group received bone mineral (ossein-hydroxyapatite compound reduced to ash, to remove organic constituents), 510 mg per day, and a third group received calcium carbonate, 650 mg per day. A series of fluorescent vital markers was administered to the animals from the 7th to the 32nd day after production of the defect. A th…

medicine.medical_specialtyDentistryBone healingMineralization (biology)Bone remodelingCalcium Carbonatechemistry.chemical_compoundFractures BoneInternal medicinemedicineAnimalsHydroxyapatitesFemurBone regenerationBone mineralWound Healingbusiness.industryGeneral MedicineCalcium carbonateEndocrinologyDurapatitechemistryMicroscopy FluorescenceDietary mineralDrug EvaluationFemaleHydroxyapatitesRabbitsbusinessCurrent medical research and opinion

Niskociśnieniowa polimeryzacja etylenu wobec katalizatorów wytworzonych z fenoksylowych pochodnych tytanu i seskwietylochloroglinu

1986

The effect of the structure of catalysts of the type left bracket Ti(OPh)//nCl//4 // minus //n plus Al//2Et//3Cl//3 right bracket (n equals 0-4) on their activity in the process of low-pressure ethylene polymerization and on the kinetics of this polymerization has been investigated. The mechanism of the effect of the number of phenoxyl ligands (n) in the titanium-component of the catalyst on the rate constants of the elementary reactions, molecular mass of polyethylene obtained and constants characterizing catalyst activity has been elucidated.

Polimery

El dispositivo descubierto. Niveles de enunciación en Sleuth

1986

En suma, la puesta en cuestión que Mankiewicz hace de la representación clásica parte de lo siguiente: resquebrajada la norma verosímil del espectáculo cinematográfico, proclamada la distancia del discurso a la historia, deshecha la tríada verosimilitud-punto de vista-identificación, Mankiewicz procede a la disolución de la noción de punto de vista narrativo en la medida en que la regulación del montaje (tanto narrativo como de ubicación, angulación, escala, etc. de los plano) pasa a ser decisiva en su indecisión. Decisiva para el análisis del modelo de representación que la quiere decisiva y que Mankiewicz debilita hasta hacerla desaparecer. Es, pues, el off, el fuera de campo, lo que adqu…

Cinematografia Arguments trames etc.

Transició demogràfica i industrialitzaciò a Vilafranca

1986

Vilafranca es una pequeña ciudad de tres mil habitantes, situada en el norte montañoso y rural del País Valencia. Su peculiaridad es la importante industria textil con que cuenta. En el presente trabajo se pretende analizar la relación entre le proceso de desarrollo económico y el comportamiento demográfico a lo largo de este último siglo.

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

Reaction Rates in the RP-Process and Nucleosynthesis in Novae

1986

Nuclear structure information available on proton rich unstable nuclei were used to evaluate thermonuclear reaction rates in the rp-process in explosive hydrogen burning. These rates were applied in a systematic analysis for a variety of temperature conditions, appropriate to nova explosions, to study nucleosynthesis for isotopes of Ne Na Mg Al Si. The results are discussed in comparison with recent observations of elemental abundances in nova ejecta.

Reaction ratePhysicsIsotopeNucleosynthesisNuclear fusionWhite dwarfNova (laser)Astrophysicsrp-processEjecta

Cycloaddition reactions of benzothiete and hetero dienophiles for the synthesis of heterocyclic systems

1986

Abstract Benzothiete ( 1 ) undergoes cycloaddition reactions with hetero dienophiles with NN-, NO- or CO- double bonds, leading to six-membered heterocyclic ring systems of 2H-3,4-dihydro-1,2,3-benzothiadiazine ( 3 ), 4H-3,1,2-benzoxathiazine ( 4 ) and 4H-3,1-benzoxathiin.

chemistry.chemical_classificationBicyclic moleculeDouble bondStereochemistryChemistryOrganic ChemistryDrug DiscoveryPolymer chemistryNuclear magnetic resonance spectroscopyRing (chemistry)BiochemistryCycloadditionTetrahedron Letters

A photoelectrochemical characterization of passive films on stainless steels

1986

Abstract Passive films on stainless steels for sea water service have been studied by means of photocurrent measurements. Four experimental ELI (Extra Low Interstitital) ferritic stainless steels (types 25Cr-4Ni-4Mo) and a commercial superaustenitic stainless steel (type 20Cr-18Ni-6Mo-N) have been investigated. Differences in the photoelectrochemical behaviour have been attributed to the different nature of the passive films grown on ferritic or superaustenitic stainless steels. An interpretation is provided to explain the complex dependence of the photocurrent transients on the applied potential. Manuscript received 27 February 1986; in amended form 19 June 1986.

PhotocurrentMaterials scienceGeneral Chemical EngineeringMetallurgyGeneral Materials ScienceGeneral ChemistryApplied potentialCharacterization (materials science)CorrosionCorrosion Science

Componentes químicos de Centaurium linarifolium (Lamark) G. Beck

1986

UNESCO::QUÍMICABiology Botany:QUÍMICA [UNESCO]

Conformational behaviour of 2,2?-bipyrrole

1986

The rotational potential around the interannular bond in 2,2′-bipyrrole has been calculated making use of standard minimal STO-3G and split valence 4-31G basis sets. Geometrical optimization concerning the most significant interannular internal parameters has been performed with both basis sets. The trans conformer is predicted to be more stable than the cis. The minimal basis set predicts the existence of a cisoid-gauche minimum which after limited optimization becomes very shallow and it seems to be an artifact of the rigid rotor approximation. At 4-31G level, both the trans and cis conformers represent maxima in the potential curve and two gauche minima appear at θ=46.0° and θ=147.6°, th…

Maxima and minimaValence (chemistry)Computational chemistryChemistryGaussian orbitalAbsolute maximumChiropracticsRigid rotorPhysical and Theoretical ChemistryMaximaConformational isomerismMolecular physicsBasis setTheoretica Chimica Acta

Los magistrados monetales de Valentia

1986

lcsh:CHumanidadeslcsh:Archaeologylcsh:CC1-960lcsh:Auxiliary sciences of historyUNESCO::HISTORIA::Ciencias auxiliares de la historia::ArqueologíaHistoria:HISTORIA::Ciencias auxiliares de la historia::Arqueología [UNESCO]

specification of a tool for viewing program text

1986

The maintenance of large programs is a demanding process where lot of information is needed. Much of this information is in the program text. However, the finding of the needed information may be very difficult. It seems evident that more powerful tools are needed for helping the maintainers to find the information they need.

Document Structure DescriptionLine numberWorld Wide WebComputer scienceProcess (engineering)Document type definition

Injerto de fibrocart1lago meniscal en los defectos osteocondrales : estudio experimental

1986

The authors report an experimental work with 18 rabbits. An osteochondral deffect is tailored in the weight-bearing area of the medial condile of the knee, this osteochondral deffect is refilled with a matching piece taken from the lateral meniscus. An optical histological examination and triptium-timidine up-take are performed three days after refilling time in one, two, three, four, six, eight, ten and twelve weeks. This study showed the meniscus graft maintaining its whole histological structure and taking the triptium-timidine along all the experiment length, with a perfect fitting and union with the bone tissue.

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

Observación de 3 casos de hematomas extradurales traumáticos agudos resueltos espontáneamente

1986

Se presentan 3 casos de hematomas extradurales agudos traumáticos con mínima repercusión neurológica que no precisaron la evacuación quirúrgica, reabsorbiéndose espontáneamente. La Tomografía Axial Computarizada de control pasado el mes del traumatismo reveló la reabsorción completa del hematoma en los 3 casos. Se concluye que la Tomografía Axial Computarizada permite identificar" una nueva categoría de pacientes con hematomas extradurales agudos traumáticos que puede que no precisen de la evacuación quirúrgica inmediata.

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]

On the preparation of simple and universal buffers including polynuclear species

1986

A simple generalized procedure for the calculation of electrolyte concentrations in pH-buffers is proposed. Mixtures of acid-base systems and formation of polynuclear species at high ionic strengths are considered, and a diagram useful for the study and preparation of the buffers is shown.

Computational chemistryChemistrySimple (abstract algebra)Inorganic chemistryNanochemistryIonic bondingElectrolyteAnalytical ChemistryMikrochimica Acta

Coût et financement de la santé à Madagascar

1986

référence interne : 86067

AfriqueSanté[SHS.EDU]Humanities and Social Sciences/Education[SHS.EDU] Humanities and Social Sciences/EducationMadagascarÉconomie de la santéFinancement de la santéCoût

Arcana d’Edgard Varèse, thématique et espace des hauteurs, un univers musical en expansion

1986

International audience

[SHS.MUSIQ] Humanities and Social Sciences/Musicology and performing arts[SHS.MUSIQ]Humanities and Social Sciences/Musicology and performing artsComputingMilieux_MISCELLANEOUS

El espacio hermético en el primer modelo de film weimariano

1986

Análisis de la construcción espacial en el plano en el llamado expresionismo cinematográfico, en relación con el estatismo pictórico y la saturación plástica.

Expressionisme (Art)CinematografiaAvantguarda (Estètica)

Immunohistochemical Investigation in Experimental Intracerebral Hemorrhage (ICH) and Its Correlation with Findings in Clinical Studies

1986

Since McKissock et al. 1961 investigated the effects of surgical and conservative treatment of ICH on final outcome it is well known that systemic hypertension worsens the prognosis of this serious cerebrovascular disease. Our own studies on this problem have revealed differences in final outcome, as well as in level of consciousness after ICH, between normotensive and hypertensive patients. Whilst 30.6% of the normotensive patients died, 48.1% of the hypertensive patients had a lethal outcome.

Conservative treatmentIntracerebral hemorrhagemedicine.medical_specialtyVasogenic edemaLevel of consciousnessbusiness.industryInternal medicinemedicineCardiologyImmunohistochemistrycardiovascular diseasesbusinessmedicine.disease

La défense du produit et le disfonctionnement du système économique

1986

Pour arriver à la connaissance de l'économie monétaire, il est indispensable de tenir compte de l'origine et de l'emploi de la monnaie ; il est non moins indispensable cependant de savoir comment la monnaie est intégrée à l'économie de production. Cette intégration est le pivot sur lequel nous nous proposons de fonder notre étude, dont le point de départ pourrait être l'acquisition de la connaissance véritable de la monnaie, qui joue un rôle essentiel dans nos sociétés économiques. En soulignant certains problèmes centraux, cette connaissance permettrait d'éviter quelques-uns des maux qui frappent nos économies, notamment le dysfonctionnement du système économique, dont l'une des causes est…

Marché économique[ SHS.ECO ] Humanities and Social Sciences/Economies and financesSystème monétaire[SHS.ECO] Humanities and Social Sciences/Economics and FinanceKeynes[SHS.ECO]Humanities and Social Sciences/Economics and Finance

Estudios polínicos de la flora autóctona valenciana : Convolvulaceae

1986

Se estudian los caracteres palinológicos referentes a forma, tamaño, ornamentación, apertura y estructura de la exina, en las doce especies de la familia Convolvulaceae presentes en el área valenciana, las cuales se pueden separar en cuatro tipos polínicos distintos, que se corresponden con cada uno de los cuatro géneros representados: Calystegia R. Br., Convolvulus I.., Cressa I.., y Cuscata I., encontrándose diferencias dentro de cada tipo que, en algunos casos, permiten discriminar especies. Palynological characters in report with size, shape, ornamentation and exine structure, are studied on the twelve species representated on the valencian area. Four palynological types are recognized,…

Caracteres palinológicos ; Área valencianaÁrea valenciana:CIENCIAS DE LA VIDA::Biología vegetal (Botánica) [UNESCO]Caracteres palinológicosUNESCO::CIENCIAS DE LA VIDA::Biología vegetal (Botánica)

Wer zählt die Völker, nennt die Namen? oder Die EULERsche Polyederformel

1986

Nachdem wir im Abschnitt uber Induktion die Lander gewisser Landkarten gefarbt haben, wollen wir diese Lander nun zahlen. Wir werden eine auserordentlich nutzliche Formel herleiten, die auf den grosen Mathematiker L. Euler (1707–1783) zuruckgeht. Diese „Eulersche Polyederformel“ stellt einen Zusammenhang zwischen den Anzahlen der Lander, Grenzen und „Ecken“ einer beliebigen Landkarte her.

Del negocio y del amor: el diario del mercader Pere Seriol (1371)

1986

manuscritosdiarioscatalánUNESCO::HISTORIA::Historia por épocas::Historia antigualibros de contabilidad:HISTORIA::Historia por épocas::Historia antigua [UNESCO]

Estudios ecológicos de un transecto dunar. II. Fenología.

1986

Ecological studies on a dune transect. II. Phenology. A phenologic sampling of a population including 78 plant species, made following Ellenberg's method, has been used to assess the differential effect of wind and other climatic factors on the phenology of plant species and communities that inhabit the great dune named El Pujol, in the Devesa de l'Albufera, near Valencia (Spain). The wind do not produce fase differences at the beginning of phenologic process, but it generates a reduction on time of these processes -leaf emission, growth, floration. The eolian effect operate on the comunities located near the coastline and exposed. The shoreward communities, protected against the wind, and …

PlantesVegetació i clima

General Introduction to Computer Simulation Methods

1986

Computer simulation methods are now an established tool in many branches of science. The motivation for computer simulations of physical systems are manifold. One of the main motivations is that one eliminates approximations with computer simulations. Usually to treat a problem analytically (if it can be done at all) one needs to resort to some kind of approximation; for exam- ple a mean-field-type approximation. With a computer simulation we have the ability to study systems not yet tractable with analytical methods. The computer simulation approach allows one to study complex systems and gain insight into their behaviour. Indeed, the complexity can go far beyond the reach of present analy…

Partition function (quantum field theory)Theoretical computer sciencelawComputer sciencePhase spaceComplex systemPhysical systemManifold (fluid mechanics)Simulation methodslaw.invention

L'artisanat rural dans la Beauce au XIXème siècle

1986

[SHS.DROIT]Humanities and Social Sciences/Law[SHS.DROIT] Humanities and Social Sciences/Law[ SHS.HIST ] Humanities and Social Sciences/History[SHS.HIST] Humanities and Social Sciences/HistoryHistoire économiqueartisanat ruralBeauce[SHS.HIST]Humanities and Social Sciences/History[ SHS.DROIT ] Humanities and Social Sciences/Law

Liikuntaseura sosiaalisena organisaationa : tutkimusviitekehys

1986

Suomalaisen liikuntakulttuurin perustavanlaatuinen toimintayksikkö ja primus motor on liikuntaseura. Liikuntaseurojen toiminta perustuu vapaaehtoisuuteen ja jäsenistön itsensä määrittelemiin "keskinäisen hyödyn" intresseihin ja pyrkimyksiin. Tässä suhteessa liikuntaseurat sosiaalisina organisaatioina erovat selvästi monista muista organisaatioista. Tästä syystä hallintotieteelliset organisaatioteoriat, talouselämästä lainatut toimintastrategiat tai hallinto- ja johtamismenettelyt eivät välttämättä päde liikuntaseurojen kohdalla, vaan ne saattavat olla jopa ristiriidassa niiden organisatorisen erityisluonteen kanssa. Onkin perusteltua, että liikuntaseurojen sosiaalista organisaatiota tutkita…

A new electrophilic addition to acetylenes. Synthesis of 1,2-iodofunctionalized olefins

1986

Abstract Acetylenes react with bis(pyridine)iodo(I) tetrafluoroborate ( 1 ) in the presence of a wide variety of nucleophiles (F, Cl, Br, I, SCN, pyridine, OAc, anisole, H) to give 1,2-iodofunctionalized olefins ( 4 ).

Addition reactionTetrafluoroborateElectrophilic additionOrganic ChemistryHalocarbonAnisoleBiochemistryMedicinal chemistrychemistry.chemical_compoundchemistryNucleophileDrug DiscoveryPyridineOrganic chemistryAliphatic compoundTetrahedron Letters

CP nonconservation at he Z0 Peak

1986

The measurement of a nonvanishing asymmetry α≡[Γ(sb¯)−Γ(s¯b)][Γ(sb¯)+Γ(s¯b)] would signal CP nonconservation in Z0 decays. We study here this effect within the standard model. In the three-generation case, the α value comes out small because of the effective degeneracy of u and c quarks at these high energies. In the four-generation case, results are encouraging for the CERN e+e− collider LEP: One could have a branching ratio of this flavor-changing decay to the flavor-conserving one of ∼10−6 and reach α values near unity.

High Energy Physics::PhenomenologyFísicaHigh Energy Physics::Experiment

Efectos de la inmovilización prolongada sobre la cadera de la rata en crecimiento

1986

An experimental work involving immobilization of the right limbs of growing rats in functional position for a period of four weeks was performed. Histological, histochemical and blood supply distribution studies proved disorganization at different degrees in the femoral hea.d inviding the vessels from the eiphyseal «perichondral ring», causing the early ossification of the head.

UNESCO::CIENCIAS MÉDICAS:CIENCIAS MÉDICAS [UNESCO]

Noch mehr kariertes Papier

1986

In diesem Abschnitt wollen wir einige Anwendungen der im vorigen Abschnitt bewiesenen Formel von Pick herleiten.

Tungsten-mannitol and sorbitol complexes: Structural characterization by IR and carbon-13 nuclear magnetic resonance spectroscopy

1986

Abstract Polarimetric and spectrophotometric studies of the mannitol-tungsten(IV) system show the formation of three table complexes. Their stoichiometries, degrees of condensation and interconversion equilibria have been studied. The structure of these compounds has been investigated by 13C NMR spectroscopy in aqueous solution and by IR spectroscopy in the solid state for the two species stable at pH

chemistry.chemical_classificationAqueous solutionChemistryCarbon-13Infrared spectroscopychemistry.chemical_elementNuclear magnetic resonance spectroscopyTungstenInorganic ChemistryNuclear magnetic resonanceMaterials ChemistryPhysical chemistryMoleculePhysical and Theoretical ChemistryInorganic compoundStoichiometryPolyhedron

Языковые единицы и условия их актуализации

1986

На материале германских, романских, а также латышского языков в сборнике исследуется взаимодействие языковых единиц разных уровней с макро и микроконтекстом. Рассматриваются процессы, сопровождающие взаимодействие текста и слова, а также зависимость этих процессов от коммуникативной и прагматической установок. Уделяется внимание лексикографическим процессам и тенденциям, а также проблемам словопроизводства, отражающим изменения, происходящие в языке.

SemantikaЛатышский языкСемантикаГерманские языкиЛексикографияLeksikogrāfija:HUMANITIES and RELIGION::Languages and linguistics::Linguistic subjects [Research Subject Categories]Романские языкиSalīdzinošā valodniecībaСравнительное языкознание

microwave effects on isolated chick embrio heart

1986

This study was designed to examine the effects of microwaves on the electric activity of hearts as a means of elucidating interactive mechanisms of nonionizing radiation with cardiac tissue. Experiments were performed on isolated hearts of 9-12-day-old chick embryos placed in small petri dishes. Oxygenated isotonic Ringer's solution at 37 degrees C permitted heart survival. Samples were irradiated at 2.45 GHz with a power density of 3 mW/cm2. The heart signal was detected with a glass micropipet inserted into the sinoatrial node and examined by means of a Berg-Fourier analyzer. Pulsed microwaves caused the locking of the heartbeat to the modulation frequency, whereas continuous wave irradia…

Settore MED/42 - Igiene Generale E Applicatamicrowawe effects

Fast preparation and gas-chromatographic separation of lanthanide and actinide hexafluoroacetylacetonates

1986

A fast method for the separation of lanthanide elements by gas chromatography of their hexafluoroacetylacetonates is described. Individual lanthanides can be isolated within a few minutes, and the whole group can be separated in less than 10 min. The hexafluoroacetylacetonates are applied in form of mixed complexes with tri-n-butyl phosphate or trioctylphosphine oxide prepared by fast extraction into quasi-solid solvents. The applicability of this method for the separation of trivalent actinide elements is shown, including the fast preparation of thin counting samples.

LanthanideClinical BiochemistryExtraction (chemistry)TrioctylphosphineAnalytical chemistryGeneral MedicineActinideAnalytical Chemistrychemistry.chemical_compoundChromatographic separationchemistryGeneral Materials ScienceGas chromatographyTrioctylphosphine oxideFresenius' Zeitschrift für analytische Chemie