[*] Dr. F. Bonino, Dr. A. Damin, Prof. Dr. S. Bordiga, Prof. Dr. A. Zecchina Department of IFM Chemistry and NIS Centre of Excellence Universit& di Torino Via P. Giuria 7, 10125 Torino (Italy) Fax: (+39)011-670-7855 E-mail: [email protected] and INSTM UdR di Torino (Italy) Prof. Dr. M. Selva, Prof. Dr. P. Tundo Department of Environmental Science Universit& Ca’Foscari Dorsoduro 2137, 30...

We report the intermolecular palladium-catalyzed reaction of tert-butyl propargyl carbonate with tryptamine derivatives or other indole-containing bis-nucleophiles. The reaction proceeds under mild conditions and with low catalyst loadings to afford novel spiroindolenine products in good to high yields.

The paper by Mochida et al. in this issue of Neuron proposes that synaptic facilitation, depression, and augmentation all arise from calcium-dependent regulation of calcium channels in the presynaptic terminal. Their proposal provides a unifying explanation for several forms of short-term presynaptic plasticity.

REVIEW ARTICLE: Calcium hydroxide has been used in endodontology for many years. The aim of this paper is to review the various formulations of calcium hydroxide that have been described, with specific reference to the vehicle used to carry the compound. The requirements for a vehicle are described, and ex vivo and in vivo studies reviewed. Vehicles can be classified into aqueous, viscous and o...

A ureolytic biodeposition treatment was applied to five types of limestone in order to investigate the effect of pore structure on the protective performance of a biogenic carbonate surface treatment. Protective performance was assessed by means of transport and degradation processes, and the penetration depth of the treatment was visualized by microtomography. Pore size governs bacterial adsor...

Indirect evidence for life on Mars has been reported from the study of meteorite ALH84001. The formation temperature of the carbonates is controversial; some estimates suggest 20 degrees to 80 degrees C, whereas others exceed 650 degrees C. Paleomagnetism can be used to distinguish between these possibilities because heating can remagnetize ferrimagnetic minerals. Study of two adjacent pyroxene...

[This retracts the article on p. 7 in vol. 29, PMID: 23573102.].

In this study a three-phase homogeneous model was developed to simulate the performance of the molten carbonate fuel cell ~MCFC! cathode. The homogeneous model is based on volume averaging of different variables in the three phases over a small volume element. This approach can be used to model porous electrodes as it represents the real system much better than the conventional agglomerate mode...

A general method for the preparation of bis-ureas from bis(o-nitrophenyl) carbonate has been developed. Directional urea synthesis is achieved by sequential amine addition to bis(o-nitrophenyl) carbonate in two steps: in the first step bis(o-nitrophenyl) carbonate is reacted with benzylamine to form benzyl-o-nitrophenyl carbamate; in the second step the carbamate is reacted with a variety of di...

1215 Calcium Channels: Critical Targets of Toxicants and Diseases Gerald Audesirk,1 David Armstrong,2 Arn M.J.M. van den Maagdenberg,3 William Atchison,4 Timothy Shafer,5 and Colin Fletcher 6 1Biology Department, University of Colorado at Denver, Denver, Colorado, USA; 2Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina...