Possible effects of EMU on German long-term interest rates

It is often argued that long-term German bonds suffer from an inflation premium caused by EMU. A decomposition of long rates shows that factors besides inflationary expectations and conversion risk affect the long bond yield. The following paper therefore discusses a more complete set of channels through which currency union affects interest rates and argues that they do not all point in the direction of rising rates. Data generating processes for long-term bonds are specified and tested for structural breaks. Absence of a structural break is interpreted as evidence against a premium caused by EM

Fluidized bed as a solid precursor delivery system in a chemical vapor deposition reactor

Chemical vapor deposition (CVD) using precursors that are solids at operating temperatures and pressures, presents challenges due to their relatively low vapor pressures. In addition, the sublimation rates of solid state precursors in fixed bed reactors vary with particle and bed morphology. In a recent patent application, the use of fluidized bed (FB) technology has been proposed to provide high, reliable, and reproducible flux of such precursors in CVD processes. In the present contribution, we first focus on the reactor design which must satisfy fluidization,sublimation and CVD reactor feeding constraints. Then, we report masstransport results on the sublimation of aluminium acetylacetonate, a common precursor for the CVD of alumina films. Finally, we discuss the efficiency of the precursor feeding rate, we address advantages and drawbacks of the invention and we propose design modifications in order to meet the process requirements

The spatial distribution of coronae on Venus

Coronae on Venus are large, generally circular surface features that have distinctive tectonic, volcanic, and topographic expressions. They range in diameter from less than 200 km to at least 1000 km. Data from the Magellan spacecraft have now allowed complete global mapping of the spatial distribution of coronae on the planet. Unlike impact craters, which show a random (i.e., Poisson) spatial distribution, the distribution of coronae appears to be nonrandom. We investigate the distribution here in detail, and explore its implications in terms of mantle convection and surface modification processes

Thresholds of Detection and Identification of Halite Nodule Habitats in the Atacama Desert Using Remote Imaging

The guiding theme of Mars exploration is shifting from global and regional habitability assessment to biosignature detection. To locate features likely to contain biosignatures, it is useful to focus on the reliable identification of specific habitats with high biosignature preservation potential. Proposed chloride deposits on Mars may represent evaporitic environments conducive to the preservation of biosignatures. Analogous chloride- bearing, salt-encrusted playas (salars) are a habitat for life in the driest parts of the Atacama Desert, and are also environments with a taphonomic window. The specific geologic features that harbor and preserve microorganisms in Atacama salars are sub- meter to meter scale salt protuberances, or halite nodules. This study focuses on the ability to recognize and map halite nodules using images acquired from an unmanned aerial vehicle (UAV) at spatial resolutions ranging from mm/pixel to that of the highest resolution orbital images available for Mars

Robotic Technologies for Surveying Habitats and Seeking Evidence of Life: Results from the 2004 Field Experiments of the "Life in the Atacama" Project

The Chilean Atacama Desert is the most arid region on Earth and in several ways analogous to Mars. Evidence suggests that the interior of the Atacama is lifeless, yet where the desert meets the Pacific coastal range dessication-tolerant microorganisms are known to exist. The gradient of biodiversity and habitats in the Atacama's subregions remain unexplored and are the focus of the Life in the Atacama project. Our field investigation attempts to bring further scientific understanding of the Atacama as a habitat for life through the creation of robotic astrobiology. This involves capabilities for autonomously traversing hundreds of kilometers while deploying sensors to survey the varying geologic and biologic properties of the environment, Fig. 1. Our goal is to make genuine discoveries about the limits of life on Earth and to generate knowledge about life in extreme environments that can be applied to future planetary missions. Through these experiments we also hope to develop and practice the methods by which a rover might best be employed to survey desert terrain in search of the habitats in which life can survive, or may have in the past

Deep space 2: The Mars Microprobe Mission

The Mars Microprobe Mission will be the second of the New Millennium Program's technology development missions to planetary bodies. The mission consists of two penetrators that weigh 2.4 kg each and are being carried as a piggyback payload on the Mars Polar Lander cruise ring. The spacecraft arrive at Mars on December 3, 1999. The two identical penetrators will impact the surface at similar to 190 m/s and penetrate up to 0.6 m. They will land within 1 to 10 km of each other and similar to 50 km from the Polar Lander on the south polar layered terrain. The primary objective of the mission is to demonstrate technologies that will enable future science missions and, in particular, network science missions. A secondary goal is to acquire science data. A subsurface evolved water experiment and a thermal conductivity experiment will estimate the water content and thermal properties of the regolith. The atmospheric density, pressure, and temperature will be derived using descent deceleration data. Impact accelerometer data will be used to determine the depth of penetration, the hardness of the regolith, and the presence or absence of 1.0 cm scale layers

Life in the Atacama — Year 2: Geologic reconnaissance through long-range roving and implications on the search for life

The Life in the Atacama-2004 project, which included geological, morphological, and mineralogical mapping through combined satellite, field-based, and microscopic perspectives and long-range roving, led to the localization of potential habitats

The Experience of Early Mobility after One Week of Hospital-acquired Deconditioning

Abstract Older adults who are hospitalized spend most of their time in bed. Prolonged bed rest and immobility in older adults may result in deconditioning of the muscles, leading to a loss of muscle mass and strength. The loss of muscle mass results in weakness and reduced physiological functioning post-hospital discharge. Immobility is especially problematic in older adults who naturally lose muscle mass and strength due to the aging process. Older adults who experience weakness post-hospital discharge face challenges with mobility. The purpose of this study was to describe the early mobility experiences of adults who are 60 years old and older and had been in the hospital for at least one week due to a medical condition, and then discharged. This focused ethnography study included in-depth interviews and observations of natural movement. Participants were male and female adults who were 60 years and older (n=10), admitted to the hospital for at least one week, and then discharged. The audio-recorded interviews were transcribed, and then analyzed by a team of three researchers. Mobility is Life was identified as the overarching pattern. Two subpatterns and six themes were identified. The first subpattern, The Crushing Assault: Consequences of Immobility, included three themes: Physiological Consequences of Immobility, Changes in Moods and Emotions Resulting from Immobility, and A Change in Identity Resulting from Immobility. The second subpattern, The Rocky Road to Regaining Mobility, included three themes: Physiological Responses to Regaining Mobility, Influence of Attitude on Recovery and Regaining Mobility, and Resources and Strategies to Regaining Mobility. The findings revealed that a loss of mobility post-hospitalization is problematic for older adults who have difficulty with activities of daily living and providing self-care, including personal hygiene. The change in the ability to function is distressing to the older adult, and results in frustration and self-reported depression. The inability to function leads to feelings of uncertainty and a challenging recovery. Regaining mobility is prolonged and difficult for the older adult who must combat weakness and fatigue during recovery. The most successful recovery from immobility includes the use of resources, including a supportive family and healthcare team