Relating microstructure, sensory and instrumental texture of processed oat

Selostus: Prosessoidun kauran mikroskooppinen ja aistittava rakenne

Electron scattering in isotonic chains as a probe of the proton shell structure of unstable nuclei

Electron scattering on unstable nuclei is planned in future facilities of the GSI and RIKEN upgrades. Motivated by this fact, we study theoretical predictions for elastic electron scattering in the N=82, N=50, and N=14 isotonic chains from very proton-deficient to very proton-rich isotones. We compute the scattering observables by performing Dirac partial-wave calculations. The charge density of the nucleus is obtained with a covariant nuclear mean-field model that accounts for the low-energy electromagnetic structure of the nucleon. For the discussion of the dependence of scattering observables at low-momentum transfer on the gross properties of the charge density, we fit Helm model distributions to the self-consistent mean-field densities. We find that the changes shown by the electric charge form factor along each isotonic chain are strongly correlated with the underlying proton shell structure of the isotones. We conclude that elastic electron scattering experiments on isotones can provide valuable information about the filling order and occupation of the single-particle levels of protons.

Model-based objects recognition in man-made environments

We describe a model-based objects recognition system which is part of an image interpretation system intended to assist autonomous vehicles navigation. The system is intended to operate in man-made environments. Behavior-based navigation of autonomous vehicles involves the recognition of navigable areas and the potential obstacles. The recognition system integrates color, shape and texture information together with the location of the vanishing point. The recognition process starts from some prior scene knowledge, that is, a generic model of the expected scene and the potential objects. The recognition system constitutes an approach where different low-level vision techniques extract a multitude of image descriptors which are then analyzed using a rule-based reasoning system to interpret the image content. This system has been implemented using CEES, the C++ embedded expert system shell developed in the Systems Engineering and Automatic Control Laboratory (University of Girona) as a specific rule-based problem solving tool. It has been especially conceived for supporting cooperative expert systems, and uses the object oriented programming paradigm

Active regions for colour texture segmentation integrating region and boundary information

In this paper a colour texture segmentation method, which unifies region and boundary information, is proposed. The algorithm uses a coarse detection of the perceptual (colour and texture) edges of the image to adequately place and initialise a set of active regions. Colour texture of regions is modelled by the conjunction of non-parametric techniques of kernel density estimation (which allow to estimate the colour behaviour) and classical co-occurrence matrix based texture features. Therefore, region information is defined and accurate boundary information can be extracted to guide the segmentation process. Regions concurrently compete for the image pixels in order to segment the whole image taking both information sources into account. Furthermore, experimental results are shown which prove the performance of the proposed method

Crassostrea patagonica (d'Orbigny, 1842) shell concentrations from the late Miocene Rio Negro province, NE Patagonia, Argentina

The Río Negro Formation (late Miocene-early Pliocene) mainly consists of continental deposits, but it contains a middle member of marine origin. It represents a transgressive-regressive sequence that can be seen at several outcrops along the N Patagonian coast. The taphonomical approach to the El Espigón marine deposits permits the identification of four main layers containing different kinds of skeletal accumulation, which mainly consist of oyster shells [Crassostrea patagonica (D'Orbigny, 1842)]. These concentrations display three different morphologies (pouches, pavements and bouquets) with a different taphonomic signature. These deposits were formed in shallow marine environments influenced by wave activity that produced valve concentrations of different entities. They contain several shell beds that represent event, composite, hiatal to lag skeletal concentrations. Traces of bioturbation in the sediment (Thalassinoides, Teichichnus) and bioerosion on the shells (Entobia, Gastrochaeonolites, Caulostrepsis), and encrusters (cirripeds, bryozoans), are also abundant in the outcrop and consititue common components of these Miocene materials. Layers 1 and 2 of the sequence were deposited in shoreface/foreshore environments at the beginning of a highstand systems tract, while layers 3 and 4 were deposited at the end, or at the beginning of a forced regression, in foreshore environments. A final erosional episode cut the top of the layer 4, which truncated the abundant bioturbaation developed there.

Decomposição catalítica da hidrazina sobre irídio suportado em compósitos à base de nanofibras de carbono para propulsão espacial: testes em condições reais

The aim of this work is to present the catalytic performance of iridium supported on carbon nanofibers with macroscopic shaping in a 2 N hydrazine microthruster placed inside a vacuum chamber in order to reproduce real-life conditions. The performances obtained are compared to those of the commercial catalyst Shell 405. The carbon-nanofiber based catalyst showed better performance than the commercial catalyst from the standpoint of activity due to its texture and its thermal conductivity.

Sisäisen toimittajan palvelutasosopimuksen kehittäminen ja toimitusvarmuuden parantaminen, CASE: oy Shell ab

Tämän tutkielman tarkoituksena on tehostaa toimitusketjua kehittämällä palvelutasosopimusta ja parantamalla toimitusvarmuutta toimittajan ja oy Shell ab:n välillä. Työssä perehdytään näiden kahden yrityksen väliseen sopimukseen ja toimitusvarmuutta kuvaavaan mittariin nimeltä Supplier OTIF. Nykytila arvioidaan molempien osalta ja mahdollisia parantavia toimenpiteitä tuodaan esille. Tämä tutkimus perustuu yrityksessä työskentelyn ohella haastatteluihin, kyselyihin sekä omiin havaintoihin eri osastoilla. Työn teoriaosuudessa tarkastellaan ostosopimuksen yleisintä kaupallista sisältöä. Lisäksi paneudutaan palveluyrityksen käytäntöihin, tulkitaan palveluyrityksen suorituskykyä ja sen mittaamista tunnuslukujen avulla. Tutkimus osoittaa, että niin palvelutasosopimus kuin toimitusvarmuuskin eivät ole riittävällä tasolla case-yrityksessä. Erityisesti osapuolien välistä yhteistyötä ja tiedonjakoa on parannettava tavoitteiden saavuttamiseksi. Työssä esiteltyjen kehitys- ja parannusehdotusten osittainen käyttöönotto aikaansai toimitusketjun tehokkaamman toiminnan. Case-yrityksen tuleekin harkita lisätoimenpiteiden käyttöönottoa. Toiminnan sekä yhteistyön parantaminen yhä edelleen jää case-yrityksen ja toimittajien yhteisesti tulevaisuudessa tehtävien ratkaisujen varaan.

Tukkukauppiaille : Shell hintaluettelo C

kuv., 21 x 27 cm

Shell huolto

kuv., 15 x 22 cm

Kuluttajille : Shell hintaluettelo C

kuv., 21 x 27 cm

Shell service

kuv., 15 x 22 cm

Kuluttajille : Shell hintaluettelo C

kuv., 22 x 27 cm

Shell prislista

kuv., 22 x 28 cm

Shell huolto

kuv., 15 x 22 cm