Search results for "SLI"

Application of Tunable-Slip Boundary Conditions in Particle-Based Simulations

2014

Compared to macroscopic systems, fluids on the micro- and nanoscales have a larger surface-to-volume ratio, thus the boundary condition becomes crucial in determining the fluid properties. No-slip boundary condition has been applied successfully to wide ranges of macroscopic phenomena, but its validity in microscopic scale is questionable. A more realistic description is that the flow exhibits slippage at the surface, which can be characterized by a Navier slip length. We present a tunable-slip method by implementing Navier boundary condition in particle-based computer simulations (Dissipative Particle Dynamics as an example). To demonstrate the validity and versatility of our method, we ha…

Numerical modelling of asymmetric boudinage

2002

Abstract Asymmetric boudinage structures are commonly used as shear sense indicators but their development is incompletely understood. This paper describes the influence of initial shape and kinematic parameters on the evolution of boudin trains using a numerical approach based on the finite difference code FLAC. Boudin trains are simulated as a series of competent objects embedded in a soft matrix subjected to general monoclinic ductile flow. Deformation of boudin trains includes heterogeneous stretching, rotation of boudins and offset along the neck regions. The sense of relative boudin offset is mainly influenced by the initial orientation of the interboudin plane in the boudinaging laye…

Asymmetric boudins as shear sense indicators—an assessment from field data

2003

Asymmetric boudins are potential but problematic shear sense indicators. They can be divided into two groups, with slip on the inter-boudin surface that is either synthetic (S-slip) or antithetic (A-slip) with respect to bulk shear sense. Since both groups have mirror-image symmetry, independent geometric criteria are needed to distinguish them if they are to be used as shear sense indicators. Investigation of asymmetric boudins in trains parallel to the main foliation from the Kaoko Belt in Namibia and elsewhere indicate that the geometry of both groups is in most cases different. Shearband boudins (formed by S-slip) have a long, curved lenticular shape and large relative displacement and …

Lipid-lowering nutraceuticals in clinical practice: position paper from an International Lipid Expert Panel

2017

In recent years, there has been growing interest in the possible use of nutraceuticals to improve and optimize dyslipidemia control and therapy. Based on the data from available studies, nutraceuticals might help patients obtain theraputic lipid goals and reduce cardiovascular residual risk. Some nutraceuticals have essential lipid-lowering properties confirmed in studies; some might also have possible positive effects on nonlipid cardiovascular risk factors and have been shown to improve early markers of vascular health such as endothelial function and pulse wave velocity. However, the clinical evidence supporting the use of a single lipid-lowering nutraceutical or a combination of them is…

Krāsa kā izteiksmes līdzeklis 4-5 gadus vecu bērnu mākslinieciskajā darbībā pirmsskolā

2018

Kvalifikācijas darba tēma ir „ Krāsa kā izteiksmes līdzeklis 4-5 gadus vecu bērnu mākslinieciskajā darbībā pirmsskolā”. Izvēlētā tēma ir būtiska, jo krāsu uztvere ietekmē gan personības veidošanos, gan emocijas. Darba izstrādes gaitā autore izpētīja krāsu uztveres attīstību 4 - 5 gadu vecu bērnu grupā pirmsskolas izglītības iestādē X. Darba mērķis: Izpētīt 4 - 5 gadus vecu bērnu krāsu uztveres veicināšanas iespējas pirmsskolā. Darbs sastāv no divām daļām – teorētiskā un empīriskā pētījuma. Teorētiskajā daļā tika analizētas vecumposma īpatnības un teorētiskie krāsu uztveres veidošanās aspekti. Savukārt empīriskajā pētījumā tika veikta rotaļnodarbību aprobācija vizuālas mākslas nodarbībās pir…

OPTIMIZING STOCHASTIC SUSCEPTIBILITY MODELLING FOR DEBRIS FLOW LANDSLIDES: PIXEL SIZE EFFECTS, PROBLEMS IN CHRONO-VALIDATION, 2D SPATIALLY DISTRIBUTE…

A Statistical Matrix Representation Using Sliced Orthogonal Nonlinear Correlations for Pattern Recognition

2000

In pattern recognition, the choice of features to be detected is a critical factor to determine the success or failure of a method; much research has gone into finding the best features for particular tasks [1]. When images are detected by digital cameras, they are usually acquired as rectangular arrays of pixels, so the initial features are pixel values. Some methods use those pixel values directly for processing, for instance in normal matched filtering [2], whereas other methods execute some degree of pre-processing, such as binarizing the pixel values [3].

Integrated geomorphological mapping in the north-western sector of Agrigento (Italy)

2012

The geomorphological map is an essential tool to perform a proper urban planning in mountainous or hilly areas. In this paper a multidisciplinary approach to derive a 1:2000 geomorphological map is described. The proposed methodology consists of the integration between aerial photographs, acquired in 2003, and four datasets of Persistent Scatterer Interferometry (PSI) measures to update a pre-existing landslide inventory. The integrated data were used to achieve a validated geomorphological map by means of a geomorphological survey. The study area is located in southern Italy (Agrigento, Sicily). The city of Agrigento, included in the World Heritage List of UNESCO in 1997, is located on the…

The Essential Thrombocythemia in 2020: What We Know and Where We Still Have to Dig Deep

2020

The Essential Thrombocythemia is a Chronic Philadelphia-negative Myeloproliferative Neoplasm characterized by a survival curve that is only slightly worse than that of age- and sex-adjusted healthy population. The criteria for diagnosis were reviewed in 2016 by WHO. The incidence varies from 0.2 to 2.5:100 000 people per year, with a prevalence of 38 to 57 cases per 100 000 people. The main characteristics of ET are the marked thrombocytosis and the high frequency of thrombosis. The spectrum of symptoms is quite wide, but fatigue results to be the most frequent. Thrombosis is frequently observed, often occurring before or at the time of diagnosis. The classification of thrombotic risk has …

Hroniskas obstruktīvas plaušu slimības (HOPS) molekulārie mehānismi centrālajos un perifērajos elpceļos

2009

Hroniskai obstruktīvai plaušu slimībai (HOPS) ir raksturīga progresējoša un neatgriezeniska plaušu funkciju pasliktināšanās, ko izraisa hroniska elpceļu obstrukcija. Elpceļu obstrukciju novērtē, izmantojot spirometriju. HOPS pašlaik ir ceturtais no biežākajiem mirstības iemesliem Eiropā un ASV, taču tiek prognozēts, ka, smēķētāju skaitam pieaugot, 2020. gadā šī slimība būs jau trešais biežākais nāves cēlonis. Šī darba mērķis bija novērtēt, vai pastāv atšķirības starp iekaisuma procesa mehānismiem centrālajos un perifērajos elpceļos nesmēķētājiem, asimptomātiskiem smēķētājiem un vidēji smagas pakāpes HOPS pacientiem. Darba uzdevumi. Primārais: kvantitatīvi novērtēt iekaisuma šūnu infiltrācij…