Jaques Larue

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A strain of Bacillus polymyxa (BPl), isolated from cauliflower seeds, inhibited the growth of microbial phytopathogens. Growth of this strain in liquid medium containing lactose, ammonium sulfate, biotin, and amino acids, resulted in optimal inhibition in vitro. Two new antibacterial substances were isolated and purified from culture broth. Their molecular(More)
We used the Linac Coherent Light Source free-electron x-ray laser to probe the electronic structure of CO molecules as their chemisorption state on Ru(0001) changes upon exciting the substrate by using a femtosecond optical laser pulse. We observed electronic structure changes that are consistent with a weakening of the CO interaction with the substrate but(More)
This study was designed to (a) verify whether the time available for movement preparation and execution modulates anticipatory postural adjustments/focal movement coordination and (b) determine to what extent the coordination in an anticipation-coincidence (AC) timing task is specific. Ten subjects performed an arm-raising movement from standing position in(More)
The aim of this study was to optimize by micellar electrokinetic chromatography the separation of four glucosinolates, i.e. sinigrin, glucobrassicin and methoxyglucobrassicin involved in Cruciferae resistance mechanisms and glucotropaeolin used as an internal standard. The separation borate buffer which contained sodium dodecyl sulphate, tetramethylammonium(More)
Two competitive immunoassays, a laboratory assay based on microwell plates and a field test based on the use of polystyrene tubes, have been developed for the quantification of thiram in lettuces. Concerning the laboratory assay, the calibration curve for thiram had a linear range of 11 to 90 ng/mL and a detection limit of 5 ng/mL. Precision of the assay(More)
Slices of human hyperplastic prostates were superfused with magnitude of [6 5Zn] Cl2 in the absence or in the presence of testosterone or 5 alpha - dihydrotestosterone or 5 alpha-androstane-3 alpha, 17 beta-diol. Uptake of magnitude of [6 5Zn] Cl2 was not significantly changed by steroid androgens but the binding of magnitude of [6 5Zn] to the citrate of(More)
Femtosecond x-ray laser pulses are used to probe the carbon monoxide (CO) oxidation reaction on ruthenium (Ru) initiated by an optical laser pulse. On a time scale of a few hundred femtoseconds, the optical laser pulse excites motions of CO and oxygen (O) on the surface, allowing the reactants to collide, and, with a transient close to a picosecond (ps),(More)
The quantities of zinc naturally present in prostatic epithelial cells determine the human prostate to be a zinc-rich gland. Since the growth of the prostate depends on androgenic steroid hormones, interrelationships between steroids and zinc were investigated. It appears now that zinc in hyperplastic prostates is bound to cytoplasmic citrate. Metabolic(More)
The trail pheromone of the African Termite Schedorhinotermes lamanianus has been investigated. It consists of two active components: an unsaturated fatty alcohol probably in C14 and a corresponding esterified fraction. The interconversion of the two by acetylation-saponification has been demonstrated. However, it is not yet known whether the ester occurs(More)
Femtosecond x-ray laser pulses are used to probe the CO oxidation reaction on Ru initiated by an optical laser pulse. On a timescale of a few hundred femtoseconds, the optical laser pulse excites motions of CO and O on the surface allowing the reactants to collide and, with a transient close to a picosecond (ps), new electronic states appear in the O K-edge(More)