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Many-electron effects in multiphoton ionization : Screening effects in single-electron ionization

We study the influence of many-electron effects in multiphoton ionization within the framework of diagrammatic many-body perturbation theory. We renormalize the electron-dipole coupling by summing to infinite order both many-electron interactions using the random-phase approximation and higher-order intensity terms. We introduce an effective intensity, which takes into account the screening of the

Lipoprotein receptor mediated metabolism of 14C arachidonic acid labelled chylomicron remnants by Hep G2 cells

During lipolysis of chylomicron triacylglycerol by lipoprotein lipase, arachidonic acid (AA) esters are hydrolyzed at a slower rate than the predominant 16-18 carbon fatty acid esters. The further metabolism of the AA that is hereby enriched in the chylomicron remnant acylglycerols has not been investigated. In the present study, we examined the low density lipoprotein (LDL) dependent and independDuring lipolysis of chylomicron triacylglycerol by lipoprotein lipase, arachidonic acid (AA) esters are hydrolyzed at a slower rate than the predominant 16-18 carbon fatty acid esters. The further metabolism of the AA that is hereby enriched in the chylomicron remnant acylglycerols has not been investigated. In the present study, we examined the low density lipoprotein (LDL) dependent and independ

Wnt5a is a TLR2/4-ligand that induces tolerance in human myeloid cells

Innate immune responses are rapid, dynamic and highly regulated to avoid overt reactions. This regulation is executed by innate immune tolerance mechanisms that remain obscure. Wnt5a is a signalling protein mainly involved in developmental processes and cancer. The effect of Wnt5a on inflammatory myeloid cells is controversial. Here, we combine primary cell cultures, in vitro binding studies, mass

The electronic structure of crystalline nickel oxides

The electronic structure of eleven crystalline nickel oxides was investigated by band theory - CNDO method. Both the band and local properties of the electronic structure were calculated and were used for the description of chemical bonding in Ni(II) (NiO, Li2NiO2, Na2NiO2, K2NiO2, BaNiO2, La2NiO4), Ni(III) (LiNiO2, NaNiO2, LaNiO3) and Ni(IV) (BaNiO3) compounds.

Reappraisal of constraints on Z′ models from unitarity and direct searches at the LHC

In a truly model-independent approach, we reexamine a minimal extension of the Standard Model (SM) through the introduction of an additional U(1) symmetry leading to a new neutral gauge boson (Z′), allowing its kinetic mixing with the hypercharge gauge boson. An SM neutral scalar is used to spontaneously break this extra symmetry, leading to the mass of the Z′. Except for three right-handed neutri

On the formation of expanding crack tip precipitates

The stress driven growth of an expanding precipitate at a crack tip is studied. The material is assumed to be linearly elastic, and the expansion is considered to be isotropic or transversely isotropic. The extent of the precipitate is expected to be small as compared with the crack length and distance to boundaries. The problem has only a single length scale given by the squared ratio of the stre

Housing adaptations and home modifications

Worldwide, but subject to substantial variations across countries, housing adaptations and home modifications constitute important and common interventions in occupational therapy practice. Starting out from the notion that occupational performance is the outcome of person–environment–occupation (P–E–O) transactions, such interventions are applicable with all kinds of clients with occupational per

It is good to feel better, but better to feel good : Whether a patient finds treatment successful' or not depends on the questions researchers ask

Introduction: In sports physiotherapy, medicine and orthopaedic randomised controlled trials (RCT), the investigators (and readers) focus on the difference between groups in change scores from baseline to follow-up. Mean score changes are difficult to interpret (is an improvement of 20 units good?'), and follow-up scores may be more meaningful. We investigated how applying three different respond

Multiconfigurational Study of the Electronic Structure of Negatively Charged Fullerens

Multiconfigurational second order perturbation theory was employed in order to describe the ground and excited states of C_60^(-n). Different choices of the active spaces are discussed and the possibility to apply multiconfigurational theory to study C_120 is investigated. The calculations were performed for all possible spin states (for selected charge) and show the preference of low spin state.

Higher-order harmonic generation in xenon at 1064 nm : The role of phase matching??

We present a completely ab initio calculation of harmonic generation in xenon exposed to a strong laser field. The time-dependent Schrödinger equation for the atomic response and the propagation equation are numerically integrated yielding excellent agreement with experiment. The weaker variation with pump intensity of the induced dipole in the high-field regime leads to an enormous enhancement in