Abstract We study elliptic and parabolic problems governed by the singular operators $$\begin{aligned} y^{\alpha }\left( D_{yy}+\frac{c}{y}D_y\right) -V(y),\quad \alpha \in {\mathbb {R}}\end{aligned}$$ y α <mml:mi...

Studies of exclusive final states produced by the two-photon process have been made at SPEAR by the Mark II and by the Crystal Ball Collaborations. region 500 MeV/c2 Measurements of r%rand x0x0 production in the mass < mx, < 2000 MeV/c2 are presented. These data include strong signals from the well-known f(1270) meson. The A2(1310) has been observed via its rr"n decay mode and its partial width...

+ For the next generation of e e linear colliders in the TeV range, the energy loss due to beamstrahlung during the collision of the e+ebeams is expected to be substantial. One consequence is that the center-of-mass energy between the colliding particles can be largely degraded from the designed value. The knowledge on the differential luminosity as a function of the center-of-mass energy is es...

The amino acid sequence of neuropeptide Y, a 36-residue peptide recently isolated from porcine brain, has been determined by using high performance liquid chromatography for separation of its tryptic and chymotryptic fragments and subsequent sequence analysis of the isolated fragments by an improved dansyl Edman subtractive technique. The amino acid sequence of neuropeptide Y has been found to ...

Restriction enzymes are among the best studied examples of DNA binding proteins. In order to find general patterns in DNA recognition sites, which may reflect important properties of protein-DNA interaction, we analyse the binding sites of all known type II restriction endonucleases. We find a significantly enhanced GC content and discuss three explanations for this phenomenon. Moreover, we stu...