The Parasitoid Complex of Forest Tent Caterpillar, \u3ci\u3eMalacosoma Disstria\u3c/i\u3e (Lepidoptera: Lasiocampidae), in Eastern Wyoming Shelterbelts

A parasitoid complex affecting the forest tent caterpillar, Malacosoma disstria, was investigated during 1978-79 in shelterbelts in eastern Wyoming. Egg parasitoids included five species: Ablerus clisiocampae, Ooencyrtus clisiocampae, Telenomus clisiocampae, Tetrastichus sp. 1 and Telenomus sp. Thirteen hymenopterous species and five dipterous species were reared from larvae and pupae of the forest tent caterpillar. The most common 5th-instar larval parasitoids were the tachinid flies, Lespesia archippivora and Archytas lateralis. Of the pupal parasitoids reared, 640/0 were Diptera and 36% were Hymenoptera. Four previously unrecorded parasitoids of M. disstria were reared: Cotesia alalantae, Macrocentrus irridescens, Pimpla sanguinipes erythropus, and Lespesia flavifrons.

After the fall: The post-apocalyptic frontier in The Road and 28 Days Later

Previous scholars have identified three scenes of the American frontier myth: the sea, the west, and space. This evolution of frontiers reflected key changes in the expression of America’s cultural identity. While Janice Hocker Rushing called space “the final frontier,” the prominent place in contemporary society held by zombies and other minions of the occult hint at the emergence of yet another scene of the American mythos: the post apocalypse. In contrast to previous frontiers, which are defined geographically, the post-apocalypse is much broader, for in the wake of a global cataclysm, everywhere is a potential frontier. This decentralization of mythic scene reflects a crisis in consciousness within contemporary American society. Pentadic and mythic analysis of two films, The Road and 28 Days Later, illuminates the salient dimensions of the postapocalyptic frontier and provides workable solutions to this crisis

The Priming Effects of Video Viewing on Preschoolers\u27 Play Behavior

This thesis investigates the relationship between educational television content and children‘s play behaviors immediately after viewing. Children ages 41-43 months of age were randomly assigned to view a television program with predominantly object-constructive or social dramatic content. All children participated in a period of video viewing, approximately 25 minutes in length, followed by a 30-minute play session. Each participant was subsequently administered a brief card sorting task to assess categorical knowledge of constructive and social activities. Each child‘s session was coded for looking at the television, toy choice, and play content (constructive or social-narrative). Video viewing condition and the interaction between categorical knowledge and condition significantly predicted children‘s subsequent play content. Taken as a whole, these findings imply that short-term priming effects of educational video viewing on children‘s play are present in 42-month old children but that these effects are moderated by children‘s categorical understanding of TV content

Increase in the gastrointestinal absorption and in tissue storage of cyclophosphamide in L-1210 leukaemic mice at an advanced stage of the disease.

BDF1 mice were inoculated with 10(6) leukaemic cells and, together with control mice, were given a single oral dose of cyclophosphamide-14C of 100 mg/kg body weight. In the leukaemic mice we observed an increased 14C concentration in the plasma, bone marrow, liver, lungs, spleen, kidney and particularly fat where the level was 2-4 times higher than in control mice. Conversely, during the same period, significantly less 14C was detected in the stomach and small intestine of the leukaemic mice. These results were obtained 6 days after tumour transplantation (median survival time 7.7 days) whereas no differences were observed when the studies were carried out 4 days after tumour transplantation. These findings indicate an increase in the gastrointestinal absorption and in the tissue storage fo cyclophosphamide in L-1210 leukaemic mice at an advanced stage of the disease

Consorciação das culturas de erva-mate (Ilex paraguariensis A. St Hilaire) e feijão (Phaseolus vulgaris L.).

Este trabalho foi executado com o objetivo de medir-se o rendimento do sistema agroflorestal erva-mate/feijao (Ilex paraguariensis / Phaseolus vulgaris), comparando-se três densidades da cultura agrícola (quatro, cinco e seis linhas) e dois tipos de mudas de erva-mate (normais e pseudo-estacas), plantadas a 3x1 m. Após um ano de consórcio, com duas colheitas de feijão (safra das águas e da seca), obteve-se maior sobrevivência no campo utilizando-se pseudo-estacas (89% contra 75% das mudas normais) recomendando-se esta técnica de plantação para a espécie estudada. A produção de feijão não foi significativamente diferenciada pelas densidades populacionais, recomendando-se o uso de quatro linhas de cultura, em função da influência dos espaçamentos mais densos sobre a sobrevivência da ervamate. A altura das plantas não foi afetada pelas alternativas de consórcio empregadas. O sistema possibilitou rendas adicionais com a exploração da cultura agrícola, quase cobrindo os custos variáveis de implantação da cultura de erva-mate

The Impact of Television Program Diet on Children\u27s Achievement

In this study, three waves of data from the Panel Study of Income Dynamics’s Child Development Supplement were used to examine patterns of children’s early TV exposure and its influence on middle childhood and adolescence. Analyses examined the pathways of influence depending on whether a dosage (hours of exposure) or diet (proportion of content to total TV time) variable was used. Results revealed that, in a dosage model, violent hours of early TV exposure were associated with decreases in independent reading and increases in externalizing behavior problems, but these did not predict later achievement. Early educational TV amount of exposure was unassociated with intermediate behaviors and was only related to later math achievement. In the diet model, total time spent viewing television was related to decreases in independent reading and prosocial behavior and increases in internalizing and externalizing behavior problems whereas violent TV diet was no longer related to any outcome. Educational TV diet, on the other hand, was positively associated with reading and math achievement. When the effects of early educational TV viewing were modeled on achievement over time, positive associations between educational TV diet and achievement in reading and math endure over time in significance and magnitude. These results suggest two conclusions: educational television viewing (particularly diet) is positively associated with achievement 10 years later even while controlling for socioeconomic status. Second, the methodological issue of which type of viewing variable to use is one that may have serious implications for the findings of research on media impact

An improved time of flight gamma-ray telescope to monitor diffuse gamma-ray in the energy range 5 MeV - 50 MeV

A time of flight measuring device is the basic triggering system of most of medium and high energy gamma-ray telescopes. A simple gamma-ray telescope has been built in order to check in flight conditions the functioning of an advanced time of flight system. The technical ratings of the system are described. This telescope has been flown twice with stratospheric balloons, its axis being oriented at various Zenital directions. Flight results are presented for diffuse gamma-rays, atmospheric secondaries, and various causes of noise in the 5 MeV-50 MeV energy range