A powerful antiradiation compound revealed by a new high-throughput screening method

We present a new high-throughput screening method for the selection of powerful water-soluble antiradiation compounds. This method, which uses conventional immunoassay techniques, allowed the capacity of a given compound to protect thymidine from irradiation to be evaluated. By applying this assay to an antioxidant library, we showed for the first time that norbadione A, a well-known mushroom pigment, has pronounced atypical antiradiation properties.     

Quadratic Sequential Computations of Boolean Mappings

This paper proposes a constructive proof that any mapping on n boolean variables can be computed by a straight-line program made up of n² assignments of the n input variables.     

Robust Path Planning for Non-Holonomic Robots

This paper deals with mobile robots path planning. We decompose the problem in three parts. In the first part, we describe a modeling method based on a configuration space discretization. Each model element is built following a particular structure which is easy to handle, as we will show. We describe the methodologies and the algorithms allowing to build the model. In the second part, we propose a path-planning application for a non-holonomic robot in configuration space. In the third part, we modify the path in order to be robust according to the control errors.     

A rigorous design of millimeter-waveguide devices using the 3d finite element method

A rigorous filter design using the finite element method and an optimization process is described. To show the validity of this method, it is here applied to a millimeter-wavelength metal insert filter. The influence of higher order mode interactions and of metallic losses is also described. © 1994 John Wiley & Sons, Inc.     

Prise de décision dans un groupe de familles québécoises.

Both spouses in 60 francophone families were asked, in 20 situations, who usually made the decisions. This methodology reflects a spouse's perception of conjugal power. Data show that an egalitarian pattern of decision was present in most families and that the decision power of women was much greater than that of men. Results point to an evolution of the québécois family, which seems to have freed itself from the traditional patriarchal authority. (English abstract) (26 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sensitivity analysis of a four-pole filter

Rigorous analysis of a four-pole elliptic filter, constructed by placing two cascaded dielectric resonators operating on their first hybrid mode, is performed using the finite element method. Sensitivity analysis of the input-output and the interresonator rectangular and cross irises is presented. Theoretical and experimental results are compared.     

Mixing characteristics and performance of the anaerobic upflow blanket filter (UBF) reactor

Mixing characteristics (using a radioactive tracer) and reactor performance of the upflow blanket filter (UBF) reactor operated at different loading rates (up to 32 kg chemical oxygen demand (COD) m^?3 day^?1) were compared. The results indicated that mixing profiles of the reactor operated with effluent recirculation and without biomass were of the perfectly mixed type. Operation without recirculation resulted in about 18% dead space. The filter made of plastic rings and located in the top third of the reactor had no negative effect on reactor mixing. Operation at loading rates of up to 25 kg COD m^?3 day^?1 permitted a soluble COD removal rate of 95% with a methane production rate of 5.9 m³ m^?3 day^?1. At higher loading rates, the efficiency of COD reduction decreased with a decrease of the specific acetoclastic activity to 0.5 kg acetate removed per kg volatile suspended solids (VSS) day^?1. At all loading rates studied it was observed that the performance was not related to the mixing characteristics, which had remained of the perfectly mixed type with an occasional small dead space (below 10%). The good mixing characteristics of the UBF reactor coupled with the high biomass content and the effective action of the filter make this reactor one of the most promising designs for the treatment of soluble wastes.