Sökresultat

Filtyp

Din sökning på "*" gav 542291 sökträffar

Numerical simulations of unsteady fluid flow and heat transfer in a transonic turbine stage

In this work, a numerical study has been performed to simulate the unsteady fluid flow and heat transfer in a transonic high-pressure turbine stage. The main objective of this study is to understand the unsteady flow field and heat transfer in a single transonic turbine stage using an unsteady structured Navier-Stokes solver. For the time accurate computation, a fully implicit time discretization,

1.2 Cognition and learning.

This theme is concerned with the relevance and efficacy of educational methods adopted in dental schools while recognizing the influence of geopolitical issues in different countries and regions. Particular emphasis will be given to examples of best practices and innovations. Cognition and learning are dealt with in many different research areas such as education, psychology, cognitive sciences, b

Methods for alignment of multi-class signal sets

The paper treats jitter estimation for alignment of a set of signals which contains several unknown classes of waveforms. The motivating application is epileptic EEG spikes. where alignment prior to clustering and averaging is desired. The assumption that the signal waveforms are unknown precludes the use of classical techniques, notably matched filtering. Instead we treat two other classes of met

The Railway Station and The Interregional Traveller - traveller preferences and implications for the planning process

The interregional traveller’s preferences of railway stations, their service provision and location, are of interest in the discussion of station reinvention brought on by the introduction of high speed train traffic. A railway station is created by station as well as societal agents, and can be described as a synthesis of symbolic value, location, traffic, services and stationscape. Traveller pr

No title

In spite of the importance of legumes in Latin American diets, nutritional features of carbohydrates in these seeds are scarcely known. The purpose of this study was to assess the in vitro digestibility of starch in cooked powdered black beans, a common type of product in Mexico and Central America. The properties of a commercial product were compared to those of an experimental material obtained

Paul’s Interlocutor in Romans 2 : Function and Identity in the Context of Ancient Epistolography

Romans 2 has long been a crux interpretum. Among matters of dispute is the function and identity of Paul’s interlocutor(s) in the chapter. While scholars agree that the individual addressed in 2:17–29 is a Jew, there is no such consensus with respect to the identity of the person addressed in 2:1–5. On the one hand, the scholarly majority holds that this person is depicted as a Jew and that the sa

Physiological and pathophysiological regulation of ECL-cell activity

The ECL cells are endocrine/paracrine cells located in the acid-producing part of the stomach. They produce and secrete histamine and chromogranin A-derived peptides in response to circulating gastrin. Mobilized histamine stimulates acid secretion from adjascent parietal cells. The aims of the present investigation were to assess the usefulness of gastric submucosal microdialysis in studies of EC

EULAR evidence based recommendations for the management of hip osteoarthritis: report of a task force of the EULAR Standing Committee for International Clinical Studies Including Therapeutics (ESCISIT)

Objective: To develop evidence based recommendations for the management of hip osteoarthritis (OA). Methods: The multidisciplinary guideline development group comprised 18 rheumatologists, 4 orthopaedic surgeons, and 1 epidemiologist, representing 14 European countries. Each participant contributed up to 10 propositions describing key clinical aspects of hip OA management. Ten final recommendation

A clinical case series of six extremely aggressive youths treated with olanzapine

Olanzapine is an atypical neuroleptic drug with mood-stabilising properties and few of the side effects commonly associated with conventional neuroleptic treatment. We used olanzapine, 5-20 mg/day, to treat severe aggression in six non-psychotic teenage boys with neuropsychiatric disorders. All but one started to respond within one week. The therapeutic effect in four of the patients clearly outwe

Automatic Analysis and Reduction of Reaction Mechanisms for Complex Fuel Combustion

This work concentrates on automatic procedures for simplifying chemical models for realistic fuels using skeletal mechanism construction and Quasi Steady-State Approximation (QSSA) applied to detailed reaction mechanisms. To automate the selection of species for removal or approximation, different indices for species ranking have thus been proposed. Reaction flow rates are combined with sensitivit

Quantum-confinement effects in InAs-InP core-shell nanowires

We report the detection of quantum confinement in single InAs-InP core shell nanowires. The wires, having an InAs core with similar to 25 nm diameter, are characterized by emission spectra in which two peaks are identified under high excitation intensity conditions. The peaks are caused by emission from the ground and excited quantized levels, due to quantum confinement in the plane perpendicular

Origins and pathways of choline acetyltransferase-positive parasympathetic nerve fibers to cerebral vessels in rat

The presence of cholinergic nerve fibers in the brain vasculature has been a matter of controversy, partly due to the lack of a reliable histochemical marker. Accordingly, no distinct information about the origin and pathways for such fibers has been available. In the present study on the rat pial vasculature, utilizing a choline acetyltransferase (ChAT) antibody, which is able to demonstrate this

Structure and mechanics of growing arterial microvessels from hypertrophied urinary bladder in the rat

Rat bladder hypertrophy, induced by a partial ligation of the urethra, was used to study the accompanying changes of microvascular smooth muscle mechanics, pharmacology and morphology. A segment of a microarterial vessel to the bladder was taken from a defined anatomical location and studied in a wire myograph in vitro at the length for maximal isometric force development (Lmax). After 10 days of