Large size and slow rotation of the trans-Neptunian object (225088) 2007 OR10 discovered from Herschel and K2 observations

We present the first comprehensive thermal and rotational analysis of the second most distant trans-Neptunian object (225088) 2007 OR10. We combined optical light curves provided by the Kepler space telescope -- K2 extended mission and thermal infrared data provided by the Herschel Space Observatory. We found that (225088) 2007 OR10 is likely to be larger and darker than derived by earlier studies: we obtained a diameter of d=1535^{+75}_{-225} km which places (225088) 2007 OR10 in the biggest top three trans-Neptunian objects. The corresponding visual geometric albedo is p_V=0.089^{+0.031}_{-0.009}. The light curve analysis revealed a slow rotation rate of P_rot=44.81+/-0.37 h, superseded by a very few objects only. The most likely light-curve solution is double-peaked with a slight asymmetry, however, we cannot safely rule out the possibility of having a rotation period of P_rot=22.40+/-0.18 h which corresponds to a single-peaked solution. Due to the size and slow rotation, the shape of the object should be a MacLaurin ellipsoid, so the light variation should be caused by surface inhomogeneities. Its newly derived larger diameter also implies larger surface gravity and a more likely retention of volatiles -- CH_4, CO and N_2 -- on the surface.Comment: Accepted for publication in AJ, 8 pages in emulateapj styl

Szén-monoxid aktiválása: átmenetifém-karbonil komplexek és alkalmazásuk homogénkatalitikus karbonilezési reakciókban = The activation of carbon monoxide: transition metal complexes and their application in homogeneous catalytic carbonylation reactions

Az egyszerű, egy szénatomot tartalmazó "C1-egységek" különböző vegyületekbe történő beépítésének egyik legegyszerűbb módja szén-monoxid alkalmazása átmenetifém-katalizált reakciókban. A pályázat keretében a következő részterületeket vizsgáltuk. - Prokirális olefinek hidroformilezése ródium- és platinakomplexek jelenlétében. - Enol-triflátok és szintetikus analógjaik, a jód-alkének karbonilezési reakciói. - Ionfolyadékok szintézise és alkalmazása homogén katalízisben. - Platina-katalizált hidroformilezés reakció-mechanizmusának vizsgálata. | One of the most efficient ways of the selective introduction of a simple 'C1-unit' into various compounds is the application of carbon monoxide in transition metal catalysed reactions. Within the framework of the project the following topics have been investigated: - Hydroformylation of (prochiral) olefins in the presence of rhodium and platinum complexes. - Carbonylation of enol-triflates and their synthetic analogues, iodo-alkenes. - The application ionic liquids in homogeneous catalysis. - Mechanistic investigation of the platinum-catalysed hydroformylation

Recognizing design patterns in C++ programs with the integration of Columbus and Maisa

A method for recognizing design patterns from C++ programs is presented. The method consists of two separate phases, analysis and reverse engineering of the C++ code, and architectural pattern matching over the reverse-engineered intermediate code representation. It is shown how the pattern recognition effect can be realized by integrating two specialized software tools, the reverse engineering framework Columbus and the architectural metrics analyzer Maisa. The method and the integrated power of the tool set are illustrated with small experiments

Incidence and Paris Classification of pediatric inflammatory bowel disease

New epidemiological data suggest that the incidence of inflammatory bowel disease (IBD) is increasing. As a result the burden of disease accounts for more strains to the health care system. The clinical variability queries whether disease characteristics are related to clinical outcome. Our aim was to delineate the latest results of incidence trends in pediatric IBD and to compare the first experiences with Paris Classification. Incidence of pediatric IBD has been increasing in Western Europe and in Eastern Europe. To better characterize IBD, Paris Classification was introduced and validated recently. Ileocolonic involvement is the most characteristic disease location in Crohn's disease (CD) based on applying Paris Classification. The rate of perianal disease and complicated behaviour in CD was similar. It is of interest that CD patients with colonic involvement were less likely to have stricturing disease compared with patients with ileal involvement. In addition, pancolitis dominated in ulcerative colitis (UC). However, most countries lack prospective, nationwide epidemiological studies to estimate incidence trends. This review emphasizes the importance of nationwide registries that enroll all pediatric IBD cases serving reliable data for "everyday practice." These first reports have shown that Paris Classification is a useful tool to determine the pediatric IBD phenotype