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A key requirement to enhance our understanding of the response of biological organisms to different levels of gravity is the availability of experimental systems that can simulate microgravity and hypergravity in ground-based laboratories. This paper compares the results obtained from analysing gene expression profiles of Drosophila in space versus those(More)
INTRODUCTION Some pathological conditions described in astronauts, such as cardiovascular deconditioning, represent the adaptive response to the absence of gravity and are partially due to the effects exerted by microgravity (μg) at the cellular level. Since endothelial cells are crucial in the maintenance of the functional integrity of the vascular wall,(More)
Sugarcane (Saccharum spp.) and other members of Saccharum spp. are attractive biofuel feedstocks. One of the two World Collections of Sugarcane and Related Grasses (WCSRG) is in Miami, FL. This WCSRG has 1002 accessions, presumably with valuable alleles for biomass, other important agronomic traits, and stress resistance. However, the WCSRG has not been(More)
Keywords: Diapir and diapirism Computational geology Level set method Volume tracking method Finite-element method a b s t r a c t The development of new efficient numerical techniques is a key point in computational fluid dynamics, and as a consequence in geological simulations. In this paper we present a model for simulating the dynamic of(More)
Carboxypeptidase from the archaebacterium Sulfolobus solfataricus is heat stable with an optimal enzyme activity at 85 °C (Colombo et al., 1992). However in the absence of glycerol and beta-mercaptoethanol, at 50 °C, the enzyme undergoes a slow thermal inactivation upon dilution in an aqueous buffer at pH 6.5. This loss of activity can be inhibited when the(More)
Preliminary to carry out long-term experiments on the International Space Station (ISS) using living orgainisms, the capacity of the experimental organisms to cope with perturbations of gravity should be tested. Actually, animals have evolved under gravity, because on earth gravity force cannot be eluded, and several features that influence life-history(More)
The main point in this presentation is the following: It is of crucial importance that the Space Agencies define and support the long-term directions for Space Biology Research. The development and upgrading of Facilities and Carriers should be coordinated with the preparatory activities of scientific groups interested in tackling major questions using the(More)