Euschistus heros mass rearing technique for the multiplication of Telenomus podisi

The objective of this work was to improve the mass rearing technique of Euschistus heros in laboratory. Nymphs and adults were reared at densities 100, 200, 300 and 400 eggs per Petri dish (9 cm diameter), and at 50, 100, 150 and 200 couples per rearing cages (900 mL), respectively. Survival rate of immature stages and survivorship and reproduction of adults were determinated. Survivorship of nymph to adult was the highest (89%) at density 100 eggs per dish. Adult survivorship was independent of density, and 100 couples per cage were the best to improve quality of the produced progeny. In these conditions, fecundity was 160.8±9.28 eggs per female, and a total of 8,950±456 eggs per cage per month was produced. Two hundred couples per cage showed a negative effect on reproduction, which decreased to 65%. With this technique, a colony of 35 cages with 100 couples per cage yields about 313.3 thousands eggs per month, which is enough to supply the egg parasitoid Telenomus podisi to colonize about 35 ha of soybean field.

Magnetism of isolated Mn12 single-molecule magnets detected by magnetic circular dichroism: Observation of spin tunneling with a magneto-optical technique

We report magnetic and magneto-optical measurements of two Mn12 single-molecule magnet derivatives isolated in organic glasses. Field-dependent magnetic circular dichroism (MCD) intensity curves (hysteresis cycles) are found to be essentially identical to superconducting quantum interference device magnetization results and provide experimental evidence for the potential of the optical technique for magnetic characterization. Optical observation of magnetic tunneling has been achieved by studying the decay of the MCD signal at weak applied magnetic field

Ministère de la guerre. Direction (du contentieux, de la justice militaire et de) la gendarmerie (sous-direction de la gendarmerie, bureau technique). Décret sur l'organisation de la gendarmerie. Document abrogé : décret du 1er novembre 1928...

[Décret. 1928-11-01]

Is tagging with visual implant elastomer a reliable technique for marking earthworms?

Visual implant elastomer (VIE) has recently been employed to investigate different aspects of earthworm ecology. However, a number of fundamental questions relating to the detection and positioning of the tag, its persistence and potential effects on earthworms remain unknown. Seven earthworm species belonging to three ecological groupings, with different pigmentation and burrowing behaviour, were tagged using different coloured VIE. External inspection after two days, one week and 1, 10 and 27 months were followed by preservation, dissection and internal inspection. Tags could be seen in living specimens to 27 months, and dissection revealed that in most cases they were lodged in the coelomic cavity, held in place by septa. However, over longer time periods (more than two years), the chlorogogenous tissue tended to bind to the tags and made external observation increasingly difficult. Migration of the VIE material towards the posterior of the earthworm and potential loss of the tag were only observed on rare occasions, and a recovery rate in excess of 98% was recorded. By introducing a reasonable amount of VIE into segments, just after the clitellum, this technique can become a valuable tool in earthworm ecology and life history studies, particularly in short-medium term laboratory and field experiments.

La protection de la personnalité du travailleur : sauvegarde de sa santé et sécurité au travail

Le scandale de l'amiante, l'épidémie de suicides au travail ou bien encore le "karôshi" sont autant de faits qui invitent à une réflexion renouvelée sur les conditions de travail. Cette thèse part d'une volonté de revisiter, dans un monde professionnel bouleversé par les progrès constants de la technique et les pressions économiques, les liens entre santé et sécurité, telles que visées aux art. 328 CO, 6 LTr et 82 LAA. Il s'agit d'examiner l'articulation entre ces dispositions, sur la base d'une analyse historique et de l'apport actuel du système légal, et la pertinence de repenser celui-ci. En effet, le pluralisme des sources en la matière, hétérogènes de par leur nature (de droit public ou privé) et/ou de par leur objet (la santé ou la sécurité), et le manque d'harmonie entre elles ne sont pas sans créer difficultés d'application et doubles emplois. La présente thèse commence par quelques repères chronologiques sur la mise en place progressive et pragmatique de la législation sociale suisse. Suit un survol des lois protectrices et autres normativités extra-juridiques, qui laisse conclure à un foisonnement et à une hétérogénéité des sources applicables. Puis, les trois dispositions générales topiques, à savoir les articles 328 CO, 6 LTr et 82 LAA, font successivement l'objet d'un examen détaillé, en vue d'évaluer leur bien-fondé respectif et la pertinence d'une approche compartimentée de la santé et sécurité au travail. Et donc de conclure par une réflexion sur l'intérêt d'un changement, notamment par la suppression du dualisme LTr / LAA.

Transposition of great arteries and single coronary artery: a new surgical technique for the arterial switch operation.

A single coronary artery can complicate the surgical technique of arterial switch operations, impairing early and late outcomes. We propose a new surgical approach, successfully applied in a 2.1 kg neonate, aimed at reducing the risk of early and late compression and/or distortion of the newly constructed coronary artery system.