The Cave: Etant Ballet

The Cave, in SZUPERNOVA, Vozodvishenka Arts House, Kiev

Study on the application of cool paintings for the passive cooling of existing buildings in Mediterranean climates

Building roofs play a very important role in the energy balance of buildings, especially in summer, when they are hit by a rather high solar irradiance. Depending on the type of finishing layer, roofs can absorb a great amount of heat and reach quite high temperatures on their outermost surface, which determines significant room overheating. However, the use of highly reflective cool materials can help to maintain low outer surface temperatures; this practice may improve indoor thermal comfort and reduce the cooling energy need during the hot season.This technology is currently well known and widely used in the USA, while receiving increasing attention in Europe. In order to investigate the effectiveness of cool roofs as a passive strategy for passive cooling in moderately hot climates, this paper presents the numerical results of a case study based on the dynamic thermal analysis of an existing office building in Catania (southern Italy, Mediterranean area). The results show how the application of a cool paint on the roof can enhance the thermal comfort of the occupants by reducing the operative temperatures of the rooms and to reduce the overall energy needs of the building for space heating and cooling.

Triple isotope (δD, δ17O, δ18O) study on precipitation, drip water and speleothem fluid inclusions for a central European cave (NW Switzerland)

Deuterium (dD) and oxygen (d18O) isotopes are powerful tracers of the hydrological cycle and have been extensively used for paleoclimate reconstructions as they can provide information on past precipitation, temperature and atmospheric circulation. More recently, the use of 17Oexcess derived from precise measurement of d17O and d18O gives new and additional insights in tracing the hydrological cycle whereas uncertainties surround this proxy. However, 17Oexcess could provide additional information on the atmospheric conditions at the moisture source as well as about fractionations associated with transport and site processes. In this paper we trace water stable isotopes (dD, d17O and d18O) along their path from precipitation to cave drip water and finally to speleothem fluid inclusions for Milandre cave in northwestern Switzerland. A two year-long daily resolved precipitation isotope record close to the cave site is compared to collected cave drip water (3 months average resolution) and fluid inclusions of modern and Holocene stalagmites. Amount weighted mean dD, d18O and d17O are �71.0‰, �9.9‰, �5.2‰ for precipitation, �60.3‰, �8.7‰, �4.6‰ for cave drip water and �61.3‰, �8.3‰, �4.7‰ for recent fluid inclusions respectively. Second order parameters have also been derived in precipitation and drip water and present similar values with 18 per meg for 17Oexcess whereas d-excess is 1.5‰ more negative in drip water. Furthermore, the atmospheric signal is shifted towards enriched values in the drip water and fluid inclusions (D of ~ þ 10‰ for dD). The isotopic composition of cave drip water exhibits a weak seasonal signal which is shifted by around 8e10 months (groundwater residence time) when compared to the precipitation. Moreover, we carried out the first d17O measurement in speleothem fluid inclusions, as well as the first comparison of the d17O behaviour from the meteoric water to the fluid inclusions entrapment in speleothems. This study on precipitation, drip water and fluid inclusions will be used as a speleothem proxy calibration for Milandre cave in order to reconstruct paleotemperatures and moisture source variations for Western Central Europe.

Catalog of Paintings Exhibited in the Colby College Art Museum May 8 -22- 1974

This catalog describes paintings by the author, completed as his Senior Scholar Project in art and exhibited in the Colby College Art Museum. Images of the paintings are not available.

Projeto cooperativo no Ambiente Cave baseado em espaço compartilhado de objetos

Este trabalho apresenta o módulo Collaborative Service, uma extensão do ambiente Cave, desenvolvido para suportar conceitos de trabalho cooperativo no projeto de circuitos integrados. Esta extensão por sua vez, é baseada na metodologia Pair- Programming e nas tecnologias Jini e Javaspaces. O módulo Collaborative Service foi desenvolvido para auxiliar a continuidade do processo de desenvolvimento de circuitos integrados complexos, inserindo uma dinâmica de grupo através da extensão de Pair-Programming para máquinas remotas. Esse modelo permite que dois ou mais projetistas interajam em um mesmo projeto ou blocos de projeto, independente de suas localizações geográficas e tipos de plataformas de hardware/software. Ele foi projetado para ser genérico e essa característica o torna capaz de suportar as ferramentas de CAD, atuais e futuras, do ambiente Cave (um framework de apoio ao projeto de circuitos integrados). Como estudo de caso, foram utilizadas duas ferramentas do Ambiente Cave. O primeiro caso mostra uma cooperação em nível de descrições gráficas, representada pela ferramenta Blade, um editor de esquemáticos hierárquico. O segundo caso foi representado pelo editor de descrições textuais (VHDL, Verilog e Linguagem C), chamado Homero. No estudo de caso com a ferramenta Blade foi demonstrado que a cooperação proposta por esse modelo pode atuar sob diferentes níveis de hierarquia de projeto, além de suportar a interação de inúmeros projetistas em um mesmo bloco. Na ferramenta Homero, demonstrou-se a cooperação em nível de descrições textuais, representados por (códigos) projetos VHDL acrescidos da participação de vários projetistas. Com esses exemplos, foi possível demonstrar as estratégias de percepção e comunicação com os projetistas, além de descrever a criação de blocos de projeto de uma forma cooperativa. Como contribuição desse trabalho, acrescenta-se ao Ambiente Cave mais um recurso para o projeto de circuitos integrados. Nesse sentido, grupos de projetistas podem projetar um sistema ou circuito integrado de forma cooperativa utilizando-se das funcionalidades desse modelo.

Growth rates in modern speleothems from Santana Cave, Brazil, by the Pb-210-method

The Santana Cave is located at the Upper Ribeira Touristic State Park (PETAR-Parque Estadual Turistico do Alto Ribeira) in southern São Paulo State, Brazil. This paper describes Pb-210 activity concentration data in soda straw stalactites samples collected at Salao das Flores in Santana Cave that is a fossil tributary of the cave river. Non-expensive alpha counting following some analytical steps for extracting and depositing Pb-210 were used for providing the Pb-210 data. In the analyzed samples, Pb-210 values of increasingly older samples fitted an exponential curve, thus suggesting that the production of Pb-210 has been constant with time. Also, the near-ideal fit indicated that the growth was uniform and there was no break in the continuous growth. The soda straw growth rates were determined from the best fit to the exponential curve through the Pb-210 activity concentration. The results of the measurements allowed estimate a longitudinal rate corresponding to 1.3 mm/yr and a lateral rate of 0.01 mm/yr, which permitted calculate times of 70 years and 317-498 years for their formation, respectively. The lateral growth rate is compatible with values from studies of chemical weathering rates held under laboratory and natural conditions. (C) 2011 Elsevier Ltd. All rights reserved.

Description of three cave diplopods of Pseudonannolene Silvestri (Diplopoda, Pseudonannolenida, Pseudonannolenidae)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Assessment of effective doses from radon levels for tour guides at several galleries of Santana Cave, Southern Brazil, with CR-39 detectors: preliminary results

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Bat community in a cave from eastern Brazil, including a new record of Lionycteris (Phyllostomidae, Glossophaginae)

A cave bat community from a semiarid region in eastern Brazil was studied during the dry season. A high diversity was observed, with thirteen species recorded. Except for Micronycteris minuta and Lionycteris spurrelli, these bats were also found in other Brazilian karstic areas. The commonest species were the hematophague Desmodus rotundus, the omnivore Carollia perspicillata, and the insectivore Natalus stramineus. The bats formed itinerant colonies, moving frequently inside the cave. L. spurrelli was previously known from Amazonia, usually associated with evergreen forests. The present record extends its range 1600 km to the south. A disjunct distribution explains some morphological differentiation between Amazonia and Olhos d'Agua cave populations. The latter may be a relict of former continuous forest vegetation, which has been fragmented after the climatic optimum. Dispersion through the Cerrado forest gallery is also possible.

Bambuina bambui: A new genus and species of cave cricket from brazil (orthoptera: Grylloidea: Phalangopsidae: Luzarinae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Endecous apterus: A new species of cave cricket from northeast Brazil, with comments on the use of subterranean habitats by Luzarinae crickets (Orthoptera: Grylloidea: Phalangopsidae: Luzarinae)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)