This review presents a survey of the condensations of 3-formylchromone with various active methylene and methyl compounds, e.g. malonic or barbituric acid derivatives, five-membered heterocycles, etc. The utilisation of the condensation products for the synthesis of different heterocyclic systems, which is based on the ability of the gamma-pyrone ring to be opened by the nucleophilic attack is ...

(Ss)-3-(p-Tolylsufinyl)-2-furaldimine was synthesized, and condensation of the chiral furaldimine with lithium ester enolates has been examined. The product distribution of the reaction is dependent upon reaction conditions and on the kind of the substituent placed on the esters. Disubstituted ester enolate resulted in the exclusive formation of (4R)-beta-lactam, while unsubstituted, tert-butyl...

The recognition of human gestures in image sequences is an important and challengingproblem that enables a host of human-computer interaction applications. This paper describes an incremental recognition strategy that is an extension of the “Condensation” algorithm proposed by Isard and Blake (ECCV’96). Gestures are modeled as temporal trajectories of some estimated parameter over time (in this...

background: premature chromosome condensation (pcc) is a method for interphase chromosome analysis in biodosimetry. this study was performed to verify the usefulness of pcc induced by calyculin a in human peripheral blood lymphocytes (pbl) for biological dosimetry and possible construction of dose-response curve. materials and methods: peripheral blood was obtained from a healthy donor and expo...

An instrument providing a new, rapid, and accurate method of determining the number and critical radii of condensation nuclei with radii under 200 angstroms is described. Based on the principle of the cloud chamber, the instrument measures transient changes in the attenuation and scattering of a monochromatic light beam by the growing fog droplets. From data obtained the absolute number concent...

This work presents procedures to compute the heat transfer coefficient when downwards flowing pure vapours (or azeotropic mixtures) condense on horizontal integral-fin tubes. At first, single tubes are considered, and the suggested procedure takes shear, gravity and surface tension force into account. The method is compared with a vast data bank demostrating a sound concordance. The second part...

We consider both theoretically and experimentally self-organization process of quasiequilibrium steady-state condensation of sputtered substance in accumulative ionplasma devices. The self-organization effect is shown to be caused by self-consistent variations of the condensate temperature and the supersaturation of depositing atoms. On the basis of the phase-plane method, we find two different...

In this paper we introduce DeepNCM, a Nearest Class Mean classification method enhanced to directly learn highly non-linear deep (visual) representations of the data. To overcome the computational expensive process of recomputing the class means after every update of the representation, we opt for approximating the class means with an online estimate. Moreover, to allow the class means to follo...

A new method to prepare solid state chlorometallates by reductive dechlorination of solvated niobium pentachloride with vaporisation of nominally free atoms of samanum is described. Products were prepared in an original set-up by evaporation of samarium into a mixed toluene solution of NbCl,, at 180 K. The local order around the Nb atoms was probed by EXAFS spectroscopy at the Nb K edge, using ...