Calpionellid zonation in Northwestern Anatolia Turkey and calibration of the stratigraphic ranges of some benthic foraminifera t the Jurassic Cretaceous boundary



Calorons in the Weyl gauge
Dunne, GV; Tekin, Bayram (2001-04-15)
We demonstrate by explicit construction that while the untwisted Harrington-Shepard caloron A(mu) is manifestly periodic in Euclidean time, with a period beta =1/T, when transformed to the Weyl (A(0)=0) gauge, the caloron gauge field A(i) is periodic only up to a large gauge transformation, with the winding number equal to the caloron's topological charge. This helps clarify the tunneling interpretation of these solutions, and their relation to Chem-Simons numbers and winding numbers.
Calixarene assembly with enhanced photocurrents using P(SNS-NH2)/CdS nanoparticle structure modified Au electrode systems
Two novel calix[n] arene-adorned gold electrodes producing high photocurrent intensities were successfully constructed by embedding gold electrode surfaces with both P(4-(2,5-di(thiophen-2-yl)-1H- pyrrol-1-yl)benzenamine) conducting polymer and 4-mercaptoboronic acid-functionalized semiconductor CdS nanoparticles to facilitate the binding of calix[n]arene sulfonic acids with nanoparticles. This structure enabled an electron transfer cascade that both induced effective charge separation and efficiently gener...
Calixarene based artificial metalloenzyme and fluorescent sensor for soft-metal cations
Öztürk, Gülsüm; Akkaya, Engin Umut; Ertan, Mevlüt; Department of Biotechnology (2002)
Supramolecular chemistry greatly facilitates the development of receptor molecules for artificial enzymes, photoresponsive host-guest systems and organic conductors among others. In recent years, there has been a growing interest in the rational design of synthetic catalysts capable of achieving significant results in terms of reaction rate and selectivity. No doubt, the admirable properties of enzymes have attracted the attention of chemists to the synthesis of novel enzyme models. The several features pos...
Cibacron Blue F3GA-incorporated macroporous poly(2-hydroxyethyl methacrylate) affinity membranes for heavy metal removal
Denizli, A; Salih, B; Arica, MY; Kesenci, K; Hasırcı, Vasıf Nejat; Piskin, E (1997-01-17)
Macroporous poly(2-hydroxyethyl methacrylate), poly(HEMA), membranes were prepared by UV-initiated photo-polymerization of HEMA in the presence of an initiator (azobisisobutyronitrile, AIBN). An affinity dye, i.e., Cibacron Blue F3GA was then incorporated covalently. These affinity membranes with a swelling ratio of 58%, and carrying 10.67 mmol Cibacron Blue F3GA/m(2) membrane were used in the adsorption/desorption of some selected heavy metal ions [i.e., As(III), Cd(II) and Pb(II)] from aqueous media. Very...
Calcareous nannofossil biostratigraphy of Valanginian Aptian in Northwest Anatolia Turkey
Altıner, Sevinç (1996-01-01)
Citation Formats
D. Altıner and S. Altıner, “Calpionellid zonation in Northwestern Anatolia Turkey and calibration of the stratigraphic ranges of some benthic foraminifera t the Jurassic Cretaceous boundary,” Geologica Romana, pp. 215–235, 1991, Accessed: 00, 2021. [Online]. Available: