Magnetization measurements with the magnetic field parallel to the c-axis were performed on overdoped Bi2¡ xPbxSr2CaCu2O8+ ± single crystals. Different from undoped Bi2Sr2CaCu2O8+ ± single crystal, a pronounced anomalous peak with maximum peak field over 5000 G can be observed in enlarging temperature window from 0.2Tc to 0.9Tc; both the anomalous magnetization peak H2p and the sharp onset of t...

Optical excitation of the sequential supermolecule H2P −ZnP −Q induces an electron transfer from the free-base porphyrin (H2P ) to the quinone (Q) via the zinc porphyrin (ZnP ). This process is modeled by equations of motion for the reduced density matrix which are solved numerically and approximately analytically. These two solutions agree very well in a great region of parameter space. It is ...

Three new A-π-D-π-A structural porphyrin-based donors, C19-H2P, C19-PdP, and C19-PtP, are designed synthesized, with porphyrin (D) moieties equipped no metal, palladium (Pd), platinum (Pt) as the core, respectively, end-capped electron-deficient 3-ethylrhodanine (A) via a π-bridge of phenylene ethynylene linker. C19-PdP C19-PtP exhibit low-lying highest occupied molecular orbital levels than C1...

A simple, highly sensitive, accurate and selective method for determination of trace amounts of Pb(II) in water samples is presented. A novel Graphene oxide with covalently linked porphyrin solid-phase extraction adsorbent was synthesized by covalently linked porphyrin onto the surfaces of graphite oxides. The stability of a chemically (GO-H2P) especially in concentrated hydrochloric acid was s...

a simple, highly sensitive, accurate and selective method for determination of trace amounts of pb(ii) in water samples is presented. a novel graphene oxide with covalently linked porphyrin solid-phase extraction adsorbent was synthesized by covalently linked porphyrin onto the surfaces of graphite oxides. the stability of a chemically (go-h2p) especially in concentrated hydrochloric acid was s...

Based on the reduced density matrix method, we compare two different approaches to calculate the dynamics of the electron transfer in systems with donor, bridge, and acceptor. In the first approach a vibrational substructure is taken into account for each electronic state and the corresponding states are displaced along a common reaction coordinate. In the second approach it is assumed that vib...

A simple, highly sensitive, accurate and selective method for determination of trace amounts of Pb(II) in water samples is presented. A novel Graphene oxide with covalently linked porphyrin solid-phase extraction adsorbent was synthesized by covalently linked porphyrin onto the surfaces of graphite oxides. The stability of a chemically (GO-H2P) especially in concentrated hydrochloric acid was s...

where (a) the group of cycles Z(V ) is the free abelian group on scheme-theoretic points of V of codimension p and (b) rational equivalence R(V ) is the subgroup generated by cycles of the form divW(f ), where W is a subvariety of V of codimension p − 1 and f is a nonzero rational function on it. There is a natural cycle class map clp : CH (V ) → H(V ), where the latter denotes the singular coh...

The electron transfer in different solvents is investigated for systems consisting of donor, bridge and acceptor. It is assumed that vibrational relaxation is much faster than the electron transfer. Electron transfer rates and final populations of the acceptor state are calculated numerically and in an approximate fashion analytically. In wide parameter regimes these solutions are in very good ...

We investigated the role of the major histocompatibility complex (MHC) region in the specificity of autoimmunity by analysing specifically the development of sialadenitis, but also insulitis, nephritis and autoantibody production in autoimmune-prone nonobese diabetic (NOD) mice where the MHC H2g7 haplotype had been exchanged for the H2q (NOD.Q) or H2p (NOD.P) haplotype. The exchange of H2 haplo...