We present a phenomenological discussion of spin-independent, generalized dipole polarizabilities of hadrons entering the virtual Compton scattering process γ∗h → γh. We introduce a new method of obtaining a tensor basis with appropriate Lorentz-invariant amplitudes which are free from kinematical singularities and constraints. The result is summarized in terms of a compact effective Lagrangian...

In this note we shall consider a finite root system R spanning an euclidean space E of dimension l (for all the facts about root systems which we are going to use in this note we refer to [1]). l is called the rank of R. We shall choose once and for all a set of positive roots R+ and in R+ the set of simple roots ∆ = {α1, . . . , αl}. We shall also denote by W the Weyl group of R i.e. the finit...

We formulate a universal characterization of the many-particle quantum entanglement in the ground state of a topologically ordered two-dimensional medium with a mass gap. We consider a disk in the plane, with a smooth boundary of length L, large compared to the correlation length. In the ground state, by tracing out all degrees of freedom in the exterior of the disk, we obtain a marginal densit...

Three novel triterpene glycosides (1 – 3), namely lycicoside I, II and cilicicoside I, were isolated from two different Cephalaria (Dipsacaceae) species along with one known oleananeand one iridoit-type of glycoside. The structures of these compounds were established as 3-O-[β -D-glucopyranosyl(1→3)-α-L-rhamnopyranosyl(1→4)-β -D-xylopyranosyl(1→4)-β -D-xylopyranosyl]-28-O-[β -Dglucopyranosyl(1→...

We have developed a transportable spectroscopic nitrogen isotopic analyzer. The spectrometer is based on dual-modulation Faraday rotation spectroscopy of nitric oxide isotopologues with near shot-noise limited performance and baseline-free operation. Noise analysis indicates minor isotope ((15)NO) detection sensitivity of 0.36 ppbv·Hz(-1/2), corresponding to noise-equivalent Faraday rotation an...

The spatial hole burning effect has been known to limit the performance of distributed feedback semiconductor diode lasers. As the biasing current of a single quarterly-wavelength-shifted distributed feedback diode laser increase, the gain margin reduces. Therefore, the maximum single-mode output power of the quarterly-wavelength-shifted distributed feedback diode laser is restricted to a relat...

In this study, we analyze the role of the thermoelectric (TE) properties, namely Seebeck coefficient α, thermal conductivity κ and electrical resistivity ρ, of three different materials in a composite thermoelectric generator (CTEG) under different configurations. The CTEG is composed of three thermoelectric modules (TEMs): (1) two TEMs thermally and electrically connected in series (SC); (2) t...

T lymphocyte adhesion is required for multiple T cell functions, including migration to sites of inflammation and formation of immunological synapses with antigen presenting cells. T cells accomplish regulated adhesion by controlling the adhesive properties of integrins, a class of cell adhesion molecules consisting of heterodimeric pairs of transmembrane proteins that interact with target mole...