The Julian C. Stanley Study of Exceptional Talent : una aproximaci??n personalizada para dar respuesta a las necesidades de los estudiantes con altas capacidades

Resumen basado en el de la publicaci??n

QUANTUM HALL FERROMAGNET IN A DOUBLE WELL WITH VANISHING g-FACTOR.

We have studied the quantum Hall effect in Al(x)Ga(1-x)As-double well structure with vanishing g-factor. We determined the density-magnetic field n(s) - B diagrams for the longitudinal resistance R(xx). In spite of the fact that the n(s) - B diagram for conventional GaAs double wells shows a striking similarity with the theory, we observed the strong difference between these diagrams for double wells with vanishing g-factor. We argue that the electron-electron interaction is responsible for unusual behavior of the Landau levels in such a system.

The Philosophy of Dissonant Children : Stanley Cavell's Wittgensteinian Philosophical Therapies as an Educational Conversation

Education is often understood as a process whereby children come to conform to the norms teachers believe should govern our practices. This picture problematically presumes that educators know in advance what it means for children to go on the way that is expected of them. In this essay Viktor Johansson suggests a revision of education, through the philosophy of Stanley Cavell, that can account for both the attunement in our practices and the possible dissonance that follows when the teacher and child do not go on together. There is an anxiety generated by the threat of disharmony in our educational undertakings that may drive teachers toward philosophy in educational contexts. Here Johansson offers a philosophical treatment of this intellectual anxiety that teachers may experience when they, upon meeting dissonant children, search for epistemic justifications of their practices—a treatment whereby dissonant children can support teachers in dissolving their intellectual frustrations.

New York Trade School Graduate, Stanley Carraher

Stanley Carraher graduated from the New York Trade School's Welding program in 1952. He is shown in his position as Welder Foreman at the construction of the Throggs Neck Bridge. Original caption reads, "Stanley Carraher - Welding 1952. Modern bridge construction requires the services of many compitent [sic] Welders. In this picture, Stanley Carraher is shown supervising the welding on the new Throggs Neck Bridge in New York City." Black and white photograph with caption adhered to reverse.

A reavaliação da Guerra do Vietnã apresentada no romance The short timer (197(), de Gustav Hasford, e em sua adaptação fílmica Fullmetal JAcket (1987), de Stanley Kubrick

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Is there a text in this class? - Comentário ao texto de Stanley Fish

Apresenta-se aqui um comentário ao texto de Stanley Fish, cuja tradução aparece nestemesmo número da revista Ma. Utilizando elementos de outros capítulos do mesmo livro, mostra-seque o Autor defende uma doutrina bem menos radical que aquela difundida em nosso meio por algunsintérpretes do famoso crítico literário. Acrescentam-se, porém, algumas considerações e distinçõesque, na opinião do comentarista, tornariam a teoria de Fish menos sujeita a interpretações radicais.

Stanley Lloyd Miller e a origem da vida: uma possibilidade para o estudo da natureza da ciência

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Two new species and a review of the inseminating freshwater fish genus Monotocheirodon (Characiformes: Characidae) from Peru and Bolivia

Two new species of inseminating freshwater fishes of the genus Monotocheirodon, family Characidae, are described from Peru. Males and females of both new species have an external, visually obvious urogenital papilla that was not detected in the females in previous studies, with this longer in males, which use it as an inseminating organ. A third inseminating species from Bolivia, Monotocheirodon pearsoni, unstudied in any detail since its original description in 1924, is redescribed. This latter species lacks an inseminating organ. Monotocheirodon is redescribed, its phylogenetic relationships are briefly discussed and it is suggested that it is possibly related to the stevardiin genera Ceratobranchia, Othonocheirodus, and Odontostoechus.

Bioremediation of PAHs - Limitations and soultions

Introduction 1.1 Occurrence of polycyclic aromatic hydrocarbons (PAH) in the environment Worldwide industrial and agricultural developments have released a large number of natural and synthetic hazardous compounds into the environment due to careless waste disposal, illegal waste dumping and accidental spills. As a result, there are numerous sites in the world that require cleanup of soils and groundwater. Polycyclic aromatic hydrocarbons (PAHs) are one of the major groups of these contaminants (Da Silva et al., 2003). PAHs constitute a diverse class of organic compounds consisting of two or more aromatic rings with various structural configurations (Prabhu and Phale, 2003). Being a derivative of benzene, PAHs are thermodynamically stable. In addition, these chemicals tend to adhere to particle surfaces, such as soils, because of their low water solubility and strong hydrophobicity, and this results in greater persistence under natural conditions. This persistence coupled with their potential carcinogenicity makes PAHs problematic environmental contaminants (Cerniglia, 1992; Sutherland, 1992). PAHs are widely found in high concentrations at many industrial sites, particularly those associated with petroleum, gas production and wood preserving industries (Wilson and Jones, 1993). 1.2 Remediation technologies Conventional techniques used for the remediation of soil polluted with organic contaminants include excavation of the contaminated soil and disposal to a landfill or capping - containment - of the contaminated areas of a site. These methods have some drawbacks. The first method simply moves the contamination elsewhere and may create significant risks in the excavation, handling and transport of hazardous material. Additionally, it is very difficult and increasingly expensive to find new landfill sites for the final disposal of the material. The cap and containment method is only an interim solution since the contamination remains on site, requiring monitoring and maintenance of the isolation barriers long into the future, with all the associated costs and potential liability. A better approach than these traditional methods is to completely destroy the pollutants, if possible, or transform them into harmless substances. Some technologies that have been used are high-temperature incineration and various types of chemical decomposition (for example, base-catalyzed dechlorination, UV oxidation). However, these methods have significant disadvantages, principally their technological complexity, high cost , and the lack of public acceptance. Bioremediation, on the contrast, is a promising option for the complete removal and destruction of contaminants. 1.3 Bioremediation of PAH contaminated soil & groundwater Bioremediation is the use of living organisms, primarily microorganisms, to degrade or detoxify hazardous wastes into harmless substances such as carbon dioxide, water and cell biomass Most PAHs are biodegradable unter natural conditions (Da Silva et al., 2003; Meysami and Baheri, 2003) and bioremediation for cleanup of PAH wastes has been extensively studied at both laboratory and commercial levels- It has been implemented at a number of contaminated sites, including the cleanup of the Exxon Valdez oil spill in Prince William Sound, Alaska in 1989, the Mega Borg spill off the Texas coast in 1990 and the Burgan Oil Field, Kuwait in 1994 (Purwaningsih, 2002). Different strategies for PAH bioremediation, such as in situ , ex situ or on site bioremediation were developed in recent years. In situ bioremediation is a technique that is applied to soil and groundwater at the site without removing the contaminated soil or groundwater, based on the provision of optimum conditions for microbiological contaminant breakdown.. Ex situ bioremediation of PAHs, on the other hand, is a technique applied to soil and groundwater which has been removed from the site via excavation (soil) or pumping (water). Hazardous contaminants are converted in controlled bioreactors into harmless compounds in an efficient manner. 1.4 Bioavailability of PAH in the subsurface Frequently, PAH contamination in the environment is occurs as contaminants that are sorbed onto soilparticles rather than in phase (NAPL, non aqueous phase liquids). It is known that the biodegradation rate of most PAHs sorbed onto soil is far lower than rates measured in solution cultures of microorganisms with pure solid pollutants (Alexander and Scow, 1989; Hamaker, 1972). It is generally believed that only that fraction of PAHs dissolved in the solution can be metabolized by microorganisms in soil. The amount of contaminant that can be readily taken up and degraded by microorganisms is defined as bioavailability (Bosma et al., 1997; Maier, 2000). Two phenomena have been suggested to cause the low bioavailability of PAHs in soil (Danielsson, 2000). The first one is strong adsorption of the contaminants to the soil constituents which then leads to very slow release rates of contaminants to the aqueous phase. Sorption is often well correlated with soil organic matter content (Means, 1980) and significantly reduces biodegradation (Manilal and Alexander, 1991). The second phenomenon is slow mass transfer of pollutants, such as pore diffusion in the soil aggregates or diffusion in the organic matter in the soil. The complex set of these physical, chemical and biological processes is schematically illustrated in Figure 1. As shown in Figure 1, biodegradation processes are taking place in the soil solution while diffusion processes occur in the narrow pores in and between soil aggregates (Danielsson, 2000). Seemingly contradictory studies can be found in the literature that indicate the rate and final extent of metabolism may be either lower or higher for sorbed PAHs by soil than those for pure PAHs (Van Loosdrecht et al., 1990). These contrasting results demonstrate that the bioavailability of organic contaminants sorbed onto soil is far from being well understood. Besides bioavailability, there are several other factors influencing the rate and extent of biodegradation of PAHs in soil including microbial population characteristics, physical and chemical properties of PAHs and environmental factors (temperature, moisture, pH, degree of contamination). Figure 1: Schematic diagram showing possible rate-limiting processes during bioremediation of hydrophobic organic contaminants in a contaminated soil-water system (not to scale) (Danielsson, 2000). 1.5 Increasing the bioavailability of PAH in soil Attempts to improve the biodegradation of PAHs in soil by increasing their bioavailability include the use of surfactants , solvents or solubility enhancers.. However, introduction of synthetic surfactant may result in the addition of one more pollutant. (Wang and Brusseau, 1993).A study conducted by Mulder et al. showed that the introduction of hydropropyl-ß-cyclodextrin (HPCD), a well-known PAH solubility enhancer, significantly increased the solubilization of PAHs although it did not improve the biodegradation rate of PAHs (Mulder et al., 1998), indicating that further research is required in order to develop a feasible and efficient remediation method. Enhancing the extent of PAHs mass transfer from the soil phase to the liquid might prove an efficient and environmentally low-risk alternative way of addressing the problem of slow PAH biodegradation in soil.

Vom Innen und Außen der Blicke - Aus Arthur Schnitzlers TRAUMNOVELLE wird Stanley Kubricks EYES WIDE SHUT

Die Arbeit verfolgt Genese und Wirkungsgeschichte von Stanley Kubricks letztem Film EYES WIDE SHUT (GB 1999) mit dem Anliegen, durch die intensive Auseinandersetzung mit den narrativen und ästhetischen Gestaltungsfaktoren eines einzelnen Films den kalkulierten Einsatz filmsprachlicher Mittel nachzuvollziehen und den solcherart kreierten (Be-) Deutungsspielraum zu diskutieren. Dabei kommen die hinter Kubricks Inszenierungsentscheidungen erkennbaren Intentionen ebenso zur Sprache wie rezeptive Muster auf seiten des Publikums.Den ersten Untersuchungskomplex bildet die adaptierte Literaturvorlage, Arthur Schnitzlers TRAUMNOVELLE (1926), die sowohl hinsichtlich ihrer inhaltlich-thematischen als auch ihrer sprachlich-erzähltechnischen Gestaltung gewürdigt wird. Kernstück der Arbeit bildet eine detaillierte, wirkungsbezogene Analyse der Inszenierungskomponenten einzelner Szenen, die hinsichtlich ihres von Regieentscheidungen geprägten Zusammenspiels betrachtet und häufig mit den jeweiligen literarischen Gestaltungsmerkma-len der Vorlage verglichen werden. Auf diese Weise wird Kubricks kreative Leistung eines Transfers von einer bedeutenden Novelle hin zu einem künstlerisch eigenständigen Film erfaßt. Dabei fällt unter anderem auf, daß die Gedankengänge Fridolins im Film durch ein subtiles Netzwerk von Andeutungen, Auslassungen und inneren Querverweisen ersetzt wurden, welches der individuellen Zuschauerwahrnehmung einen hohen Stellenwert zuweist – der Betrachter rückt gewissermaßen ins Zentrum des Films, soll den Platz des recht blaß bleibenden Protagonisten einnehmen, der nur als Stellvertreter fungiert.

Reconnaissance au Cameroun au travers de la culture urbaine ou "Hein Père" de Stanley Enow.

Hip Hip camerounais cesse d'etre une tribune où se guillotine vainement un gouvernement insensible depuis des ans. L'introduction de ''hein pere'' au travers le MIC de Stanley Enow vient rendre hommage à la jeunesse camerounaise et au Cameroun. Finis les portraits sombres d'une jeunesse oubliée par les pouvoirs publics. Ils sont fiers et et le chantent. Ils sont high malgré tout et compte bien y rester. Ce single exhibite la grandeur du Cameroun, des acteurs de la culture et de la jeunesse infatigable, qui avec ce concept ''onesthighpere'' se hisse au plus haut point.

Professor Salomon Kalischer : geb. 8.10.1844, gest. 20.9.1924

Ph. Salomon

Stanley und Emin nach Stanley's eigenem Werk

von Alfred Kirchhoff