Radial Dependence of Extinction in Parent Galaxies of Supernovae

The problem of extinction is the most important issue to be dealt with in the process of obtaining true absolute magnitudes of core-collapse supernovae (SNe). The plane-parallel model which gives absorption dependent on galaxy inclination, widely used in the past, was shown not to describe extinction adequately. We try to apply an alternative model which introduces radial ependence of extinction. A certain trend of dimmer SNe with decreasing radius from the center of a galaxy was found, for a chosen sample of stripped-envelope SNe.Comment: 4 pages, 1 table, 2 figures, 6th SCSLSA Pro

Atmospheric dispersion and the implications for phase calibration

The success of any ALMA phase-calibration strategy, which incorporates phase transfer, depends on a good understanding of how the atmospheric path delay changes with frequency (e.g. Holdaway & Pardo 2001). We explore how the wet dispersive path delay varies for realistic atmospheric conditions at the ALMA site using the ATM transmission code. We find the wet dispersive path delay becomes a significant fraction (>5 per cent) of the non-dispersive delay for the high-frequency ALMA bands (>160 GHz, Bands 5 to 10). Additionally, the variation in dispersive path delay across ALMA's 4-GHz contiguous bandwidth is not significant except in Bands 9 and 10. The ratio of dispersive path delay to total column of water vapour does not vary significantly for typical amounts of water vapour, water vapour scale heights and ground pressures above Chajnantor. However, the temperature profile and particularly the ground-level temperature are more important. Given the likely constraints from ALMA's ancillary calibration devices, the uncertainty on the dispersive-path scaling will be around 2 per cent in the worst case and should contribute about 1 per cent overall to the wet path fluctuations at the highest frequencies.Comment: 13 pages, 10 figures, ALMA Memo 59

gCSP: A Graphical Tool for Designing CSP systems

For broad acceptance of an engineering paradigm, a graphical notation and a supporting design tool seem necessary. This paper discusses certain issues of developing a design environment for building systems based on CSP. Some of the issues discussed depend specifically on the underlying theory of CSP, while a number of them are common for any graphical notation and supporting tools, such as provisions for complexity management and design overview

Quasi-one and two-dimensional transitions of gases adsorbed on nanotube bundles

Grand canonical Monte Carlo simulations have been performed to determine the adsorption behavior of Ar and Kr atoms on the exterior surface of a rope (bundle) consisting of many carbon nanotubes. The computed adsorption isotherms reveal phase transitions associated with the successive creation of quasi-one dimensional lines of atoms near and parallel to the intersection of two adjacent nanotubes.Comment: 12 pages, 6 figures, submitted to J. Chem. Phy

Markovian kinetic equation approach to electron transport through quantum dot coupled to superconducting leads

We present a derivation of Markovian master equation for the out of equilibrium quantum dot connected to two superconducting reservoirs, which are described by the Bogoliubov-de Gennes Hamiltonians and have the chemical potentials, the temperatures, and the complex order parameters as the relevant quantities. We consider a specific example in which the quantum dot is represented by the Anderson impurity model and study the transport properties, proximity effect and Andreev bound states in equilibrium and far from equilibrium setups.Comment: 10 pages, 6 figure

Antraknoza - nova bolest jagode u Srbiji i njena kontrola fungicidima

Anthracnose is a destructive disease of strawberry fruits in warm and continental climate. During 2004, in the vicinity of Valjevo, there were severe losses in two strawberry plantations due to fruit anthracnose. Two fungal isolates, GG-6A and GG-JUP were recovered from strawberry stolons and fruits showing severe anthracnose symptoms. Based on morphological and pathological characteristics, and PCR analyses with specific primers of reference species, isolate GG-6A was identified as Colletotrichum gloeosporioides, and GG-JUP isolate as C. acutatum. This is the first identification of C. acutatum in strawberry in Serbia. In order to control strawberry anthracnose, five fungicides and their combinations were applied four times during the flowering. The best fruit protection was achieved by fungicides Metiram + piraclostrobin (Cabrio top), Captan FL and Fludioksinil + ciprodinil (Swich). Less effective were Benomil (Benlate) and Krezoksim-metil (Stroby). Pathogen is transmitted by planting material, so phytosanitary measures are extremely important in preventing the disease.Antraknoza je destruktivna bolest plodova jagode u toplim i kontinentalnim klimatskim uslovima. Tokom 2004. godine, na 2 plantaže jagoda u blizini Valjeva, bilo je velikih gubitaka prouzrokovanih antraknozom. Dva izolata gljiva GG-6A i GG-JUP su izolovana iz stolona jagode, i plodova sa izraženim simptomima antraknoze. Na osnovu morfoloških i patoloških karakteristika, i PCR analize sa specifičnim prajmerima za referentne vrste, izolat GG-6A je identifikovan kao Colletotrichum gloeosporioides, a izolat GG-JUP kao C. acutatum. Ovo je prvi nalaz C. acutatum na jagodi u Srbiji. U cilju kontrole antraknoze jagode pet fungicida i njihovih kombinacija su primenjeni 4 puta tokom cvetanja. Najbolja zaštita plodova jagode je postignuta primenom fungicida Metiram + piraclostrobin (Cabrio top), Captan FL i Fludioksinil ciprodinil (Swich). Manje efektivni su bili Benomil (Benlate) i Krezoksim-metil (Stroby). Patogen se prenosi sadnim materijalom pa su fitosanitarne mere veoma važne u prevenciji bolesti

Micromechanical modelling of ductile fracture – local approach

Micromechanical modelling of ductile fracture by using the local approach has been presented as the review of previously obtained results for welded joints made of low alloyed high strength steel. Experimental work was performed on 3PB specimens and tensile panels, which were then modelled by finite element method, using two- and three-dimensional meshes, respectively. The local approach was used to simulate both for crack initiation and growth during ductile fracture process