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Color reconnections and rapidity gaps
I argue that the success of recently proposed models describing events with large rapidity gaps in DIS at HERA in terms of non-perturbative colour exchange is heavily reliant on suppression of perturbative gluon emission in the proton direction. There is little or no physical motivation for such suppression and I show that a model without this suppression cannot describe the rapidity gap events at
Reconnecting colored dipoles
Reconnections among the produced colour dipoles in the Dipole Cascade Model are discussed, and an implementation in theAriadne program is presented. The reconnections are shown to have only small effects on event shapes at LEP 1, on theW mass determination at LEP 2 and on rapidity gaps in deep inelastic scattering at HERA.
School-based study found that physical activity and aerobic fitness predicted increases in total body fat and abdominal fat at a mean age of 9.8 years.
AIM: We assessed whether baseline measurements of physical activity, aerobic fitness, body fat and abdominal fat were predictors of changes in body fat measurements over a two-year period.METHODS: The study comprised of 204 children aged 9.8 ± 0.6 years with a normal body mass distribution, who recruited from four schools in middle-class areas of Malmö, Sweden, from 2001 to 2004. Peak oxygen uptak
Real-Time Calibration of Planar Laser Induced Fluorescence Air/Fuel-Ration Measurements in Combustion Environments Using in-situ Raman Scattering
A laser-based technique for recording absolute air-fuel ratio maps in a single-laser pulse in combustion devices, for instance, prior to ignition in internal combustion engines, is demonstrated. The method is based on an in situ pulse-to-pulse calibration of two-dimensional laser-induced fluorescence (LIF) images of relative fuel distributions by a point Raman measurement. A single excimer laser p
Small x effects in W + jets production at the Tevatron
The jet structure in events with Drell-Yan-produced W bosons is discussed, and a new model for describing such an event is presented. The model is shown to explain recent measurements of the W-jet rapidity correlation and predicts a transverse energy flow at high W rapidities (corresponding to probing small-x partons in one of the incoming protons) higher than conventional parton cascade event gen
Engine Diagnostics Using Laser Induced Fluorescence Signals Collected Through an Endoscopic Detection System
In this paper an alternative method for collecting laser induced fluorescence (LIF) signals from engines with limited optical access is presented. An endoscopic detection system has been used for LIF visualisation of both gaseous and liquid fluids in a DISI-engine. The use of an endoscope made it possible to monitor parts of the combustion chamber that could not be accessed through the piston with
Recognition in Human–Robot Interaction : The gateway to engagement
We argue that mutually adaptive interaction involves the robot as a partner as opposed to a tool, and requires that the robot is susceptible to similar environmental cues and behaviour patterns as humans are. Recognition, or the acknowledgement of the other as individual, is fundamental to mutually adaptive interaction. Recognition leads to a dynamic coupling of human and robot such that they beco
Aerosolized radionuclides for functional imaging in COPD/asthma.
Investigation of the Fuel Distribution and the In-Cylinder Flow Field in a Stratified Charge Engine Using Laser Techniques and Comparison with CFD-Modelling
This paper presents an investigation of a Volvo Direct Injection Spark Ignition (DISI) engine, where the fuel distribution and the in-cylinder flow field have been mapped by the use of laser techniques in an engine with optical access. Along with the experimental work, CFD-modelling of flow and fuel distribution has been performed.Laser Induced Fluorescence (LIF) visualisation of the fuel distribu
Lungfunktionsundersökningar vid KOL.
A study of the Homogeneous Charge Compression Ignition combustion process by chemiluminescence imaging
An experimental study of the Homogeneous Charge Compression Ignition (HCCI) combustion process has been conducted by using chemiluminescence imaging. The major intent was to characterize the flame structure and its transient behavior. To achieve this, time resolved images of the naturally emitted light were taken. Emitted light was studied by recording its spectral content and applying different f
Rapidity gaps and other final state properties in the color dipole model for deep inelastic scattering
In the light of recent results from the experiments at HERA, the treatment of DIS in the Colour Dipole Model is reviewed and improved. A procedure where the first emission in the dipole cascade is matched onto the exact O(αS) matrix element is introduced, giving a more correct dependence of the three-jet rate onQ2. Also a new treatment of the proton remnant is introduced assuming a pomeron-like pa
Optical Diagnostics Applied to a Naturally Aspirated Homogeneous Charge Compression Ignition Engine
STED Nanoscopy of Interfaces and Interactions between Nanostructure Arrays and Living Cells
STED Nanoscopy of Interfaces and Interactions between Nanostructure Arrays and Living Cells The specific arrangement of membrane lipids and proteins in a living cell at the interface to high-aspect ratio nanostructures (nanowires and nanostraws) is still unknown – as are the dynamic structural adaptations and molecular rearrangements of living cells in the vicinity of such nanostructures. Whether
Feasibility studies and application of laser/optical diagnostics for characterization of a practical low-emission gas turbine combustor
CLHEP: A project for designing a C++ class library for high-energy physics
CLHEP is a project for developing a general C++ class library for high energy physics. This paper describes the motivation behind the project together with its current status. Also the future of the project is discussed.
The Influence of Charge Inhomogeneity on the HCCI Combustion Process
In-cylinder crank-angle resolved imaging of fuel and OH was obtained using planar laser induced fluorescence (PLIF) in a Homogenous Charge Compression Ignition (HCCI) engine. Investigations were carried out to ascertain the extent to which the combustion process in an HCCI engine is affected by the charge homogeneity. In the experiments, the heterogeneity of the charge was varied and the effect on
STED nanoscopy of Interfaces and Interactions between Nanostructure Arrays and Living Cells
STED Nanoscopy of Interfaces and Interactions between Nanostructure Arrays and Living Cells The specific arrangement of membrane lipids and proteins in a living cell at the interface to high-aspect ratio nanostructures (nanowires and nanostraws) is still unknown – as are the dynamic structural adaptations and molecular rearrangements of living cells in the vicinity of such nanostructures. Whether
Sex differences in local adaptation : what can we learn from reciprocal transplant experiments?
Local adaptation is of fundamental interest to evolutionary biologists. Traditionally, local adaptation has been studied using reciprocal transplant experiments to quantify fitness differences between residents and immigrants in pairwise transplants between study populations. Previous studies have detected local adaptation in some cases, but others have shown lack of adaptation or even maladaptati