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Repertorium
(2015)
The impact of naval sonar on beaked whales is of increasing concern. In recent years the presence of gas and fat embolism consistent with decompression sickness (DCS) has been reported through postmortem analyses on beaked whales that stranded in connection with naval sonar exercises. In the present study, we use basic principles of diving physiology to model nitrogen tension and bubble growth in several tissue compartments during normal div ng behavior and for several hypothetical dive profiles to assess the risk of DCS. Assuming that normal diving does not cause nitrogen tensions in excess of those shown to be safe for odontocetes, the modeling indicates that repetitive shallow dives, perhaps as a consequence of an extended avoidance reaction to sonar sound, can indeed pose a risk for DCS and that this risk should increase with the duration of the response. If the model is correct, then limiting the duration of sonar exposure to minimize the duration of any avoidance reaction therefore has the potential to reduce the risk of DCS.
This report arises from research carried out in Iganga and Namutumba districts in late 2006/early 2007 by the Cultural Research Centre (CRC), based in Jinja. Our research focus was to gauge the impact of using Lusoga as a medium of instruction (since 2005 in "pilot" lower primary classes) within and outside the classroom. This initiative was in response to a new set of circumstances in the education sector in Uganda, especially the introduction by Government of teaching in local languages in lower primary countrywide from February 2007. This followed an experimental period, in selected pilot districts, including Iganga, where fifteen pilot schools had been chosen: all these became part of this study.
Anax parthenope is a very rare dragonfly in Vendée. This article relates how this species bred once only in 2001 on a sand dune in Noirmoutier island.
Mein Freund Ernst Brenske, der sich auf seiner Tour nach Morea im November 1881 auf meinen Rath zwei Wochen in Corfu aufhielt um dort Coleopteren zu sieben, fand während dieser Zeit 5 neue Pselaphiden - und Scydmaeniden-Arten, welche in mir den Wunsch rege werden liessen, dieselben gelegentlich in grösserer Anzahl zu sammeln. Diesem Vorhaben konnte ich schon heuer entsprechen, da meine angegriffene Gesundheit es nothwendig machte, den Rest des Winters in einem milderen Klima zu verbringen. ...
During a 4-week run in October–November 2006, a pilot experiment was performed at the CERN Proton Synchrotron in preparation for the Cosmics Leaving OUtdoor Droplets (CLOUD) experiment, whose aim is to study the possible influence of cosmic rays on clouds. The purpose of the pilot experiment was firstly to carry out exploratory measurements of the effect of ionising particle radiation on aerosol formation from trace H2SO4 vapour and secondly to provide technical input for the CLOUD design. A total of 44 nucleation bursts were produced and recorded, with formation rates of particles above the 3 nm detection threshold of between 0.1 and 100 cm -3 s -1, and growth rates between 2 and 37 nm h -1. The corresponding H2O concentrations were typically around 106 cm -3 or less. The experimentally-measured formation rates and htwosofour concentrations are comparable to those found in the atmosphere, supporting the idea that sulphuric acid is involved in the nucleation of atmospheric aerosols. However, sulphuric acid alone is not able to explain the observed rapid growth rates, which suggests the presence of additional trace vapours in the aerosol chamber, whose identity is unknown. By analysing the charged fraction, a few of the aerosol bursts appear to have a contribution from ion-induced nucleation and ion-ion recombination to form neutral clusters. Some indications were also found for the accelerator beam timing and intensity to influence the aerosol particle formation rate at the highest experimental SO2 concentrations of 6 ppb, although none was found at lower concentrations. Overall, the exploratory measurements provide suggestive evidence for ion-induced nucleation or ion-ion recombination as sources of aerosol particles. However in order to quantify the conditions under which ion processes become significant, improvements are needed in controlling the experimental variables and in the reproducibility of the experiments. Finally, concerning technical aspects, the most important lessons for the CLOUD design include the stringent requirement of internal cleanliness of the aerosol chamber, as well as maintenance of extremely stable temperatures (variations below 0.1 °C)
Retortenkino : Game Impact
(2009)
Das B-Movie "Street Fighter: The Legend of Chun Li" haben wir Gott sei Dank schon wieder vergessen. Mit "Prince of Persia" aus dem Hause Bruckheimer/Disney steht 2010 jedoch die nächste große Spieleverfilmung mit dazugehöriger Marketing-Maschinerie an. Marcus Stiglegger nimmt den anhaltenden Trend zum Anlaß und setzt sich mit dem Einfluß von Computerspiel-Ästhetik auf die Inszenierung von Spielfilmen auseinander.
The Orizabus Fairmaire (Coleoptera: Scarabaeidae: Dynastinae: Pentodini) of the USA are reviewed. Orizabus pinalicus new species and O. mcclevei new species are described. Lectotypes are here designated for eight species names: Bothynus pyriformis LeConte, Pseudaphonus lucidus Casey, Orizabus snowii Horn, Orizabus cultripes Fairmaire, Orizabus isodonoides Fairmaire, Orizabus sallei Fairmaire, Orizabus fontinalis Casey, and Orizabus ponderosus Casey. Illustrations of diagnostic characters and a key to the five included species are presented. The Mexican species O. isodonoides and O. rubricollis Prell are also illustrated for comparison to the new species.