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191.
Enrico A. Rodrigo 《Physics letters. A》1981,84(8):411-414
It is well known that the Casimir Energy depends on the geometry of the conducting cavity. In this note, scalar Green's functions are used to determine the Casimir energy's dependence on terms bilinear in the extrinsic curvatures of the cavity's surface, and thus to resolve the controversy over the Casimir energy's finiteness. 相似文献
192.
Giuseppe Arena Salvatore Musumeci Enrico Rizzarelli Silvio Sammartano Carmelo Rigano 《Transition Metal Chemistry》1980,5(1):297-299
Summary The formation constants of species formed in the systems H+-Zn2+-cysteine and H+-Zn2+-cystine have been determined in aqueous solution at 37° and I = 0.15 mot dm–3 (NaClO4), using the pH-metric method. The existence of the following species [ZnL], [ZnL2], [ZnL2H] and [Zn2L3] (2.3 pH 7.7) was proved for the Zn2+-cysteine system, whereas for the Zn2+-cystine [Zn2L] (5.3 pH 6.4) was the only species found. In the Zn2+-cystine system the pH range was severely restricted because of precipitation occurring at pH > 6.4. A new experimental and numerical approach was employed in order to implement the possibility of rigorously selecting the species present in each system. The results have been compared with data previously reported on the same systems, considering in particular the different sets of species found in the various works. 相似文献
193.
Enrico Aiello Salvatore Plescia Gaetano Dattolo 《Journal of heterocyclic chemistry》1976,13(3):615-617
The title compounds were obtained by reaction of aminopyrazoles IV and VII with ω-acetophenonesulfonyl chloride (II, R = C6H5). In agreement with the general pattern of the distribution of electron density in the pyrazole nucleus, this work confirms that the position 4 of ring is the favoured site of electrophilic attacks. 相似文献
194.
Functionalized γ,δ-unsaturated oximes, constructed by regiospecific alkylation of appropriate oximes, may be rearranged and cyclized to Δ1-pyrrolines in good yield. 相似文献
195.
Ketones can be homologated to α,gb-unsaturated esters or amides via their enol triflates by a palladium-catalyzed reaction with carbon monoxide and alcohols or amines. 相似文献
196.
197.
Parthasarathi Majumdar Enrico C. Poggio Howard J. Schnitzer 《Physics letters. [Part B]》1980,93(3):321-326
The supercurrent anomalies of the supercurrent μ of the supersymmetric Yang-Mills theory in Wess-Zumino gauge are computed using the supersymmetric dimensional regulator of Siegel. It is shown that and in agreement with an earlier calculation based on the Adler-Rosenberg method. The problem of exhibiting the chiral anomaly and a regulator for local supersymmetry suggests that the interpretation of dimensional reduction in component language is incomplete. 相似文献
198.
Enrico Mincione Anthony J. Pearson Paolo Bovicelli Malcolm Chandler Geoffrey C. Heywood 《Tetrahedron letters》1981,22(30):2929-2932
New Methodology is described for the synthesis 6-ketosteroids, of potential value for the synthesis of β-ecdysone, tricarbonyl (4-methoxy-1-methylcyclohexadienyl) iron hexafluorophosphate . 相似文献
199.
200.