The mechanism for the photochemical isomerization reaction is investigated theoretically using a model system of a five-membered-ring silene and the CAS(8,8)/6-311G(d) and MP2-CAS-(8,8)/6-311++G(3df,3pd)//CAS(8,8)/6-311G(d) methods. These model investigations indicate that the preferred reaction route for a five-membered-ring silene, which leads to the photorearrangement product, is as follows:...

Two intramolecularly donor-stabilized silenes, l-(8-dimethylamino-l-naphthyl)-l,2,2-tris(trimethylsilyl)silene (1 ), and l-[bis-2 ,6 -(dimethylaminomethyl)phenyl]-l,2 ,2 -tris(trimethylsilyl)silene 2, were studied by 2 9 Si and C NMR spectroscopy, using polarization transfer techniques in order to determine coupling constants V (2 9 Si,2 9 Si) in = 1,2, 3) and '/ ( 2 9 Si,l3 C) together with is...

The genus Silene, with more than 100 species in Iran is an important genus of Iranian flora. According to available data on the northwestern parts of Iran, including three provinces of Ardabil, East and West Azarbaijan are considered as a major diversity center of perennial species of the genus Silene in Iran. In the course of a revision of Silene in this area, some interesting specimens were c...

Duman, Joseph G., Kamala Tyagarajan, Michelle S. Kolsi, Hsiao-Ping H. Moore, and John G. Forte. Expression of rab11a N124I in gastric parietal cells inhibits stimulatory recruitment of the H1-K1-ATPase. Am. J. Physiol. 277 (Cell Physiol. 46): C361–C372, 1999.—Stimulation of the gastric parietal cell results in a massive redistribution of H1-K1-ATPase from cytoplasmic tubulovesicles to the apica...

Plant-insect interactions often are important for plant reproduction, but the outcome of these interactions may vary with environmental context. Pollinating seed predators have positive and negative effects on host plant reproduction, and the interaction outcome is predicted to vary with density or abundance of the partners. We studied the interaction between Silene stellata, an herbaceous pere...

The synthesis of silaheterocycles through the first examples of an intramolecular silene Diels-Alder reaction is described.

FCC spectrum auctions sell licenses to provide mobile phone service in designated geographic territories. We propose a method to structurally estimate the deterministic component of bidder valuations and apply it to the 1995–1996 C-block auction. We base our estimation of bidder values on a pairwise stability condition, which implies that two bidders cannot exchange licenses in a way that incre...

To the Editor In an article entitled “Prognostic Significance of CXCL12 Expression in Patients With Colorectal Carcinoma,”1 we found that the authors may have inadvertently annotated CAM5.2 as cytokeratins (CKs) 8 and 18 by using a pair of square brackets to reference some reports, which might suggest that CAM5.2 is identical to CK8 and CK18. Becton Dickinson (BD) Biosciences revised the data s...

1 Modulating μ-Opioid Receptor Phosphorylation Switches Agonist-Dependent Signaling as Reflected in PKCε Activation and Dendritic Spine Stability Hui Zheng, Ji Chu, Yuhan Zhang, Horace H. Loh and Ping-Yee Law From Department of Pharmacology, University of Minnesota, 6-120 Jackson Hall, 321 Church St. S.E., Minneapolis, Minnesota, 55455-0217, USA. South China Institute for Stem Cell Biology and ...