The thymidine analog 5-bromodeoxyuridine (BrUdR) incorporated into DNA has been successfully used as a selective agent (1, 2) or mutagen (3) on various animal cells. Some of its effects are understandable in terms of base substitution in the genetic material; others, however, such as the reversible suppression of cytodifferentiation (4-7), remain unexplained. We have examined the effects of pro...

Single crystal of Thallium doped cesium Iodide –Scintillator crystal was grown using vertical Bridgeman technique. The grown crystal was included for cutting and polishing for the characterization purpose and this crystal was studied by optical transmission properties, photo luminescence and thermally luminescence characteristics. Gamma-ray detectors were fabricated using the grown crystal that...

Modelling transport and deposition of caesium and iodine from the Chernobyl accident using the DREAM model J. Brandt, J. H. Christensen, and L. M. Frohn National Environmental Research Institute, Department of Atmospheric Environment, Frederiksborgvej 399, P.O. Box 358, DK-4000 Roskilde, Denmark Received: 11 April 2002 – Accepted: 14 May 2002 – Published: 24 June 2002 Correspondence to: J. Bran...

Macromolecular sedimentation in inhomogeneous media is of great practical importance. Dynamic density gradients have a long tradition in analytical ultracentrifugation, and are frequently used in preparative ultracentrifugation. In this paper, a new theoretical model for sedimentation in inhomogeneous media is presented, based on finite element solutions of the Lamm equation with spatial and te...

The cesium carbonate-mediated reaction of 2-bromoallyl sulfones and ortho-hydroxychalcones furnished 3-arylsulfonyl-4H-chromene derivatives in 58-67% yield (18 examples). 2-Bromoallyl sulfones functioned as synthetic surrogates for allenyl sulfones in the reaction.

Cesium-containing triple cation perovskites are attracting significant attention as suitable tandem partners for silicon solar cells. The perovskite layer of a cell must strongly absorb the visible light and be transparent to infrared light. Optical transmittance measurements layers containing different cesium concentrations (0–15%) were carried out on purpose evaluate utility fabrication monol...

Three distinct sets of indole-based heterocycles were rapidly and selectively synthesized from the same set of Ugi-adducts under microwave heating in a reaction-condition-controlled manner. Notably, an unprecedented metal-free intramolecular sp(3)-hybridized C-H arylation using only cesium carbonate was discovered.

T(2) and T(4) bacteriophage have been exposed to various treatments which are known to release the encapsulated DNA. The unseparated reaction products have been examined by autoradiography. The results indicate the presence of one large subunit of DNA (molecular weight 45 x 10(6)) for each former phage particle. Some smaller subunits of molecular weight 12 x 10(6) have been observed. The large ...