Stephen Heller, Brustbild

Signatur des Originals: S 36/F00744

Stephen Heller, Brustbild

Signatur des Originals: S 36/F00745

Catherine Heller,Professor of Design, March 1964

preferred 4 x 5 inch negative, clipped - source for vintage prints in same envelope

Nutritive value of foods purchased by dependent families; a study of grocery orders of 233 families on relief in Alameda county, California, prepared for the Heller committee for research in social economics of the University of California,

Mimeographed.

From "Rational Utopia" to "Will-to-Utopia". On the "Post-modern" Turn in the Recent Work of Agnes Heller

Agnes Heller recently described her position as 'postmodernist', suggesting a move from a political radical to a politically liberal or 'neoconservative' position. The aim of this paper is to assess the degree to which Heller can still be regarded as a radical political thinker through an evaluation of her work on autonomy, democracy and contingency all of which remain key concepts in her thinking about the political. We find in each case that whilst many of the motifs of her critical Marxist period recur in her recent work, they are losing their oppositional or 'negative' character in the sense that making these motifs operational would require changes to the structure or functioning of liberal-capitalism. Whils remaining in some sense a radical thinker Heller has moved from the advocacy of a 'rational utopia' to a form of theorising which I describe as 'will-to-utopia': radical at the surface yet conservative at the core.

The Predation of Artemia Nauplii by the Larvae of the Amazon River Prawn, Macrobrachium amazonicum (Heller, 1862), is Affected by Prey Density, Time of Day, and Ontogenetic Development

The present study analyzed the effects of prey density, the time of day, and ontogenetic development on the predation of Artemia nauplii by the larvae of the Amazon river prawn, Macrobrachium amazonicum, as well as possible synergy among these factors. Larvae were raised in 120-L tanks with biological filter systems, and fed on recently hatched Artemia nauplii, using two feeding management protocols: (a) fed once per day at 2000 h (high density HD) and (b) half of the ration provided at 2000 h, complemented at 0800 h the following day by a replacement of the nauplii consumed up to a maximum of the full ration (low density with replacement LDWR). Each treatment consisted of six replicates. The consumption of nauplii was estimated prior to the feeding times. Consumption varied according to time of day, ontogenetic development, and feeding protocol. The larvae ingested more nauplii during the daytime at most developmental stages. Ingestion rates were similar during the day under both treatments, but at night the higher density of prey in the HD treatment caused a higher encounter rate and increased ingestion of nauplii by the larvae. Among the performance indicators only survival was greater in HD in comparison with LDWR; productivity and dry weight were similar. The results indicate a circadian trophic rhythm in M. amazonicum, with the encounter rate being an important mechanism for the capture of prey during the night. A second mechanism probably the visual system aids the perception of prey during the daytime. Based on these results, we suggest that feeding captive Amazon river prawn larvae only once a day would be appropriate and economically beneficial. Further work is necessary to determine the most effective time that this single feed should be applied.

Uso de bandejas de alimentação na fase de engorda do camarão-da-Amazônia Macrobrachium amazonicum (HELLER, 1862)

The aim of this experiment was to evaluate the hypothesis that the M. amazonicum prawns accept feeding in trays. Six ponds were stocked with 10 juveniles II (1.2 +/- 0.7 g) per m(2) in 02/14/2003. An entirely randomized experimental design with 2 treatments (feeding in trays or feeding to the throw) and 3 replicates was used. Prawn average weight, survival, productivity, and physical and chemical variables of the water were compared between treatments using "t" test of Student. Average weight, survival and productivity were, respectively, 7.2 +/- 0.3 g, 46.8 +/- 7.8% and 335 +/- 45 kg/ha in feeding tray treatment and 6.8 +/- 0.1 g, 85.8 +/- 5.2% and 586 +/- 42 kg/ha in feed to the throw treatment. Survival and productivity differed significantly (p<0.5), while that average weight didn't differ significantly. M. amazonicum needs to use further number of trays per area, possibly due to territorial and aggressive behavior.

Ascidonia Flavomaculata (Heller, 1864), a new record for the Portuguese marine invertebrate fauna (Decapoda, Pontoniidae)

Several specimens of Ascidonia flavomaculata were collected during experimental fishing trials along the southern coast of Portugal. All specimens were associated with the solitary ascidian, Phallusia mammillata. The pontoniinae shrimp, A. flavomaculata is here recorded from the Portuguese coast for the first time, extending the species’ known distribution range further north along the coast of the eastern Atlantic Ocean.

Pugna por la soberanía : el debate sobre el concepto de soberanía a partir de las críticas de Carl Schmitt y Hermann Heller a la Teoría pura del derecho de Hans Kelsen.

La presente disertación tiene como objetivo principal explicar las posturas de los juristas Hans Kelsen, Carl Schmitt y Hermann Heller frente a la erradicación o liquidación del dogma de la soberanía para la teoría del Estado y del Derecho. En este sentido, de manera ya más específica, se analizarán las críticas de Heller y Schmitt frente la liquidación de la soberanía realizada por Kelsen, defendiendo que sus críticas pueden ser aglutinadas en dos grandes dimensiones. La primera asociada al pensamiento de Heller y Schmitt quienes criticarán el método “puro” kelseniano, dado que desconoce, según su postura, la función decisoria del Estado y el contenido político de sus decisiones. La segunda, se asocia a las críticas al entroncamiento de la postura kelseniana y el liberalismo político expresado en su cosmopolitismo y su defensa del parlamentarismo. Para demostrar esta hipótesis el presente trabajo se enmarca dentro de un método hermenéutico y filosófico dada su interdisciplinariedad, acudiendo como fuentes primarias a los textos de los autores y como secundarias a los comentaristas especializados en el pensamiento jurídico y político de la república de Weimar como Leticia Vita, y Jerónimo Molina.

Caracterização fenotípica de indicadores bacterianos da qualidade dos camarões frescos (Macrobrachium amazonicum - Heller, 1862) comercializados em feiras livres de Macapá, Estado do Amapá.

O município de Macapá está localizado na região Norte do país e, devido sua riqueza em ambientais naturais, águas dulcícolas e facilidade de acesso à captura do camarão-da-Amazônia (Macrobrachium amazonicum - Heller, 1862) sua comercialização se torna relevante tanto no aspecto socioeconômico como cultural, uma vez que o pescado é a principal fonte de proteína da população. Geralmente a comercialização em feiras livres não é realizada de forma adequada, não obedecendo aos protocolos vigentes com relação aos seus aspectos higiênicosanitários. Deste modo, gera um ambiente ainda mais propicio para a proliferação de bactérias, visto que o camarão por apresentar altos índices de proteína, favorece ainda mais aumento do potencial de risco. A veiculação de bactérias patogênicas por alimentos é um problema de saúde pública no Amapá, posto que, ainda não há fiscalizações que atuem em toda a cadeia produtiva, inclusive na forma de manuseio e exposição do pescado nas feiras. Este trabalho teve como objetivo caracterizar fenotipicamente os isolados bacterianos de Staphylococcus aureus, Salmonella spp, Escherichia coli e Aeromonas spp vislumbrando avaliar a qualidade de camarões frescos com cascas, comercializados em feiras-livres de Macapá-AP e sua relevância em Saúde Pública. Foram analisadas 20 amostras de camarões provenientes de 5 feiras livres. As análises foram realizadas no Laboratório Central de Saúde Pública do Amapá (LACEN-AP) e no Laboratório Especial de Microbiologia Aplicada (LEMA) da UNIFAP. Para tal, uma vez adquiridos os camarões foram imediatamente transferidos para sacos de poliestireno estéreis, onde foi acrescentado meio de cultura seletivo e por meio da técnica de enxaguadura de toda a superfície dos camarões com casca. As amostras obtidas foram acondicionadas em caixas isotérmicas com gelo e transportadas até os laboratórios para análise. Após o período de incubação, alíquotas das culturas primárias, foram semeadas conforme os protocolos descritos pela American Public Health Association em seu Compendium of methods for the microbiological examination of foods. 4th ed. 2001 e suas adaptações descritas nos procedimentos operacionais padrão dos laboratórios participantes: LACEN-AP e LEMA - UNIFAP. A identificação bioquímica das espécies foram realizadas no LACEN-AP através dos protocolos do equipamento Vitek Plus System (bioMérieux, Inc.Durham, NC-USA) com posterior confirmação pelo Centro de Referência Nacional de Cólera e outras Enteroinfecções Bacterianas do Instituto Osvaldo Cruz (FIOCRUZ). Os resultados revelaram que das 20 amostras analisadas, em nenhuma delas foram identificadas bactérias do Gênero Aeromonas spp. e Staphylococcus aureus, porém 9 delas revelaram crescimento de E. coli e 6 de Salmonella spp. e E. coli resultados em desacordo com os limites satisfatórios quanto à adequada segurança alimentar. Desta maneira os resultados demonstraram que há riscos de adquirir doenças transmitidas por alimentos ao consumir esses produtos. Esses dados indicam valiosos conhecimentos para a promoção do intercâmbio entre a vigilância epidemiológica e sanitária, permitindo monitorar aspectos clínicos, ambientais e alimentares apresentando-se como uma poderosa arma na defesa contra doenças endêmicas e epidêmicas veiculadas por alimentos.

Mechanical conditions in the initial phase of bone healing

Background: Bone healing is sensitive to the initial mechanical conditions with tissue differentiation being determined within days of trauma. Whilst axial compression is regarded as stimulatory, the role of interfragmentary shear is controversial. The purpose of this study was to determine how the initial mechanical conditions produced by interfragmentary shear and torsion differ from those produced by axial compressive movements. ----- ----- Methods: The finite element method was used to estimate the strain, pressure and fluid flow in the early callus tissue produced by the different modes of interfragmentary movement found in vivo. Additionally, tissue formation was predicted according to three principally different mechanobiological theories. ----- ----- Findings: Large interfragmentary shear movements produced comparable strains and less fluid flow and pressure than moderate axial interfragmentary movements. Additionally, combined axial and shear movements did not result in overall increases in the strains and the strain magnitudes were similar to those produced by axial movements alone. Only when axial movements where applied did the non-distortional component of the pressure–deformation theory influence the initial tissue predictions. ----- ----- Interpretation: This study found that the mechanical stimuli generated by interfragmentary shear and torsion differed from those produced by axial interfragmentary movements. The initial tissue formation as predicted by the mechanobiological theories was dominated by the deformation stimulus.

Diversified service provisioning in global business networks

Companies and their services are being increasingly exposed to global business networks and Internet-based ondemand services. Much of the focus is on flexible orchestration and consumption of services, beyond ownership and operational boundaries of services. However, ways in which third-parties in the “global village” can seamlessly self-create new offers out of existing services remains open. This paper proposes a framework for service provisioning in global business networks that allows an open-ended set of techniques for extending services through a rich, multi-tooling environment. The Service Provisioning Management Framework, as such, supports different modeling techniques, through supportive tools, allowing different parts of services to be integrated into new contexts. Integration of service user interfaces, business processes, operational interfaces and business object are supported. The integration specifications that arise from service extensions are uniformly reflected through a kernel technique, the Service Integration Technique. Thus, the framework preserves coherence of service provisioning tasks without constraining the modeling techniques needed for extending different aspects of services.