抗原变异可使得多种致病微生物易于逃避宿主免疫应答。表达在感染红细胞表面的恶性疟原虫红细胞表面蛋白1（PfPMP1）与感染红细胞、内皮细胞、树突状细胞以及胎盘的单个或多个受体作用，在黏附及免疫逃避中起关键的作用。每个单倍体基因组var基因家族编码约60种成员，通过启动转录不同的var基因变异体为抗原变异提供了分子基础。

疟原虫var基因转换速率变化导致抗原变异[英]／Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A

Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

Phd by thesis

Lanthanide-based luminescent hybrid materials.

Optical Waveguide Theory

Recent developments in rare-earth doped materials for optoelectronics

Photoreflectance (PR) spectroscopy has been applied to investigate the band bending (built-in electric field) and the energy gap for Mg-doped InN layers with various Mg concentrations (4.0-7.3 × 1020 cm–3). A broad PR resonance followed by the Franz-Keldysh oscillation, which is typical of the band-to-band absorption in the sample region with strong band bending, has been observed at the energy of ∼0.66-0.7 eV. The region of strong band bending in InN:Mg layers results from the Fermi level pinning at the energy range i) above the conduction band at the sample surface and ii) close to the valence band inside InN:Mg layer due to Mg-doping. The built-in electric field in this region has been estimated from the Franz-Keldysh oscillation to be ∼0.6-0.8 MV/cm. In addition, it has been observed that the energy gap of InN:Mg is reduced from about 0.70 eV to 0.66 eV with the increase in Mg concentration from 4 to 7.3 × 1020 cm–3. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Photoreflectance spectroscopy of the band bending and the energy gap for Mg-doped InN layers

Pump‐probe time‐resolved Kerr rotation technique has been used for experimental investigation of hole spin coherence in 15‐nm wide GaAs/AlGaAs quantum well structure in regime of diluted two‐dimensional hole gas. Due to the spectral width of 1.5 ps laser pulses which correspond to ∼1 meV, selective excitation of trion and exciton states has been performed. In the case of resonant excitation of exciton only the electron spin beats have been observed in the presence of magnetic field. In the case of resonant excitation of the positively charged exciton two component decay of time‐resolved Kerr rotation (TRKR) signal appeared. From the period of the quantum beat oscillation related to long decay component (up to 650 ps) of TRKR signal we obtained in‐plain hole g‐factor of ∼0.048±0.005.

Spin Coherence of Holes in GaAs/AlGaAs Quantum Wells

GaAs-Based Quantum Well Exciton-Polaritons beyond 1 μm M. Pieczarka, P. Podemski, A. Musiaa, K. Ryczko, G. S¦k, J. Misiewicz, F. Langer, S. Hofling, M. Kamp and A. Forchel Institute of Physics, Wrocaaw University of Technology, Wybrze»e Wyspia«skiego 27, 50-370 Wrocaaw, Poland Technische Physik, University of Wurzburg and Wilhelm-Conrad-Rontgen-Research Center for Complex Material Systems (RCCM), Am Hubland, D-97074 Wurzburg, Germany

/pdf/gaas-based-quantum-well-exciton-polaritons-beyond-1-mm-1v7btxp75i.pdf

Jan Misiewicz

Papers

Photoreflectance spectroscopy of the band bending and the energy gap for Mg-doped InN layers

Spin Coherence of Holes in GaAs/AlGaAs Quantum Wells

GaAs-Based Quantum Well Exciton-Polaritons beyond 1 μm

Photoreflectance spectroscopy of MOCVD grown GaAs epilayers

Photoreflectance investigations of complex structures