There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

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

The surface science of titanium dioxide

The richness of optical and electronic properties of graphene attracts enormous interest. Graphene has high mobility and optical transparency, in addition to flexibility, robustness and environmental stability. So far, the main focus has been on fundamental physics and electronic devices. However, we believe its true potential lies in photonics and optoelectronics, where the combination of its unique optical and electronic properties can be fully exploited, even in the absence of a bandgap, and the linear dispersion of the Dirac electrons enables ultrawideband tunability. The rise of graphene in photonics and optoelectronics is shown by several recent results, ranging from solar cells and light-emitting devices to touch screens, photodetectors and ultrafast lasers. Here we review the state-of-the-art in this emerging field.

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Graphene photonics and optoelectronics

Nature of the metal-metal bond in triangulo- dodecacarbonyl triruthenium from uv photoelectron spectroscopy and quantum mechanical calculations

He(I) excited photoelectron spectra of hydantoin, 1-methylhydantoin and urazole are presented and discussed. The spectra are assigned by comparison with the spectrum of succinimide and by INDO/S calculations. The electronic structure of the imido group of succinimide is not substantially perturbed by the replacement of one or two CH2 groups by NH groups. The HOMO is mainly localized on the additional nitrogen atoms in both the title compounds.

Electronic structure of imides by uv photoelectron spectroscopy and indo/s calculations: hydantoin and urazole

GAS-PHASE ULTRAVIOLET PHOTOELECTRON SPECTRA OF ((NI(η-C5H5))2(μ-C2R2)) (R = H OR CF3) COMPLEXES

Electronic Structure of Tetracoordinate Transition-Metal Complexes. Part 2. Comparative Theoretical ab initio/Hartree-Fock-Slater and UV-Photoelectron Spectroscopic Studies of Building Blocks for Low-Dimensional Conductors: Glyoximate

Ab initio LCAO-MO-SCF calculations on the model compounds C 5 H 4 N-2-C(R 1 )=NH [R 1 = H ( 2c ) and R 1 = trans -PdCl(PH 3 ) 2 ( 4c )] indicate that the E - trans conformation is favored over the E - cis one by 16.9 kJ mol −1 for 2c and by 25.0 kJ mol −1 for 4c . One of the factors which stabilizes the E-trans arrangement for 4c is a weak bonding interaction between the palladium center and the pyridine nitrogen. On going from 2c to 4c a slight charge enrichment on the pyridine carbons and a more pronounced one on the nitrogen atoms is computed, whereas the charge density of the imino carbon atom is decreased. In 4c no π contribution to the PdC bond is observed. Protonation of the organic moiety of 4c in the E-cis configuration gives rise to a weak PdC π overlap population and to a decreased energy separation between π* 5 ( LUMO ) and the highest energy occupied π MO (π 4 ) of the pyridine-2-carbald-imino moiety. The theoretical results are qualitatively related to structural and spectroscopic data (electronic, IR and 13 C NMR ) of pyridine-2-carbaldimines and the corresponding imino-carbon palladated derivatives.

Gaetano Granozzi

Papers

Nature of the metal-metal bond in triangulo- dodecacarbonyl triruthenium from uv photoelectron spectroscopy and quantum mechanical calculations

Electronic structure of imides by uv photoelectron spectroscopy and indo/s calculations: hydantoin and urazole

GAS-PHASE ULTRAVIOLET PHOTOELECTRON SPECTRA OF ((NI(η-C5H5))2(μ-C2R2)) (R = H OR CF3) COMPLEXES

Electronic Structure of Tetracoordinate Transition-Metal Complexes. Part 2. Comparative Theoretical ab initio/Hartree-Fock-Slater and UV-Photoelectron Spectroscopic Studies of Building Blocks for Low-Dimensional Conductors: Glyoximate

Theoretical and Spectroscopic Studies on Imino-Carbon Palladated Pyridine-2-carbaldimines.