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

Excited states of two-dimensional hole gas at the Al0.5Ga0.5As/GaAs interface

By combination of polarization-resolved photoluminescence, transport, and realistic numerics we study energy and recombination spectra of free and acceptor-bound positive trions in a quasi-two-dimensional hole gas. The singlet–triplet crossing in the trion ground state is found at B ≈ 12 T, and a slight reduction of all trion binding energies coincident with the formation of a Laughlin hole fluid is observed at B ≈ 14.2 T.

/pdf/experimental-and-theoretical-studies-of-free-and-acceptor-3hjf9dhalo.pdf

Experimental and Theoretical Studies of Free and Acceptor-Bound Positive Magneto-Trions

rences 4,). Defect related transitions were investigated in ref.6 Elec-trical transport was measured in papers 7,8. Methods of obtaining Zn3P2crystals are reviewed in ref.9 Single crystals applied in described be-low investigations were obtained by chemical vapour transport method9,and by directed physical transport method.'°

Fundamental optical properties of Zn3P2

Magnetic and magnetoreflectivity study of quaternary manganese based semimagnetic semiconductors

Positively charged excitons in a two-dimensional hole gas in symmetric and asymmetric GaAs/Ga1−xAlxAs quantum wells are studied in polarization-resolved photoluminescence experiments in high magnetic fields B (up to 23 T) and low temperatures (down to 300 mK). The experiments are accompanied by numerical calculations of a real structure. The whole family of trions (the singlet and a pair of triplets) are observed. The Coulomb energies crossing of singlet and triplet is found: hidden in symmetric and visible in asymmetric structures.

/pdf/evidence-of-singlet-triplet-crossing-in-photoluminescence-of-4tt6phho02.pdf

Jan Misiewicz

Papers

Excited states of two-dimensional hole gas at the Al0.5Ga0.5As/GaAs interface

Experimental and Theoretical Studies of Free and Acceptor-Bound Positive Magneto-Trions

Fundamental optical properties of Zn3P2

Magnetic and magnetoreflectivity study of quaternary manganese based semimagnetic semiconductors

Evidence of Singlet-Triplet Crossing in Photoluminescence of Positively Charged Excitons in GaAs Quantum Wells