Identification of Allelochemicals from Terminalia Chebula

This study was an experiental research to identify the chemicals contained in terminalia chebula.The dried leaves and barks were ground to a fine powder in a Wiley Mill (40 mesh), using this powder for aqueous extract prepared by the method of Heisey (1990). Bioassay studies were also carried out following the method of Heisey (1990). The extraction of phenolic compounds for GC analysis was carried out by the method of Kil and Yum (1983). The comparison of the leaf and bark extracts was done. The result of our study showed that the leaf extracts of the T.chebula contains more quantity of hydroquinone, trans-cinnamic acid, gentisic acid, vanillic acid, syringic acid and transferulic acid (phnolic acids) otherwise known as allochemicals than the bark and were more inhibitory to seeding growth of Cassia occidentals and Crotalaria retusa than the bark extracts in bioassay studies. The implication is that Terminalia Chebula will be extremely useful in future to control the weed growth in agroecosystem. Keywords: Terminnlia chebula, Cassia occidentals, Crotalaria retusa and allelo chemicals.African Research Review Vol. 2 (3) 2008: pp. 306-31

Testing Anomalous WW Couplings in e−e−e^- e^- Collisions

We analyze the influence of anomalous gauge couplings in the reaction $e^- \: e^- \longrightarrow e^- \: W^- \: \nu_e$ at a 500 GeV linear collider. The limits imposed by this process on deviations from the standard model of electro-weak interaction, are competitive with those inferred from other high energy experiments. Furthermore, the allowed domain in the parameter space is quite different, and hence such an experiment would more than complement the other direct searches.Comment: LaTex, 9 pages + 5 figures (not included) Full postscript version available by anonymous ftp from HEP.PHYSIK.UNI-MUENCHEN.DE (or 129.187.198.1) and is located in preprints/mpi9398.ps, preprint : MPI-Ph/93-9

Production of η′\eta\prime Mesons in the pp→ppη′pp \to pp\eta\prime Reaction at 3.67 GeV/c

The ratio of the total exclusive production cross sections for $\eta\prime$ and $\eta$ mesons has been measured in the $pp$ reaction at $p_{beam}=3.67$ GeV/c. The observed $\eta\prime/\eta$ ratio is $(0.83\pm{0.11}^{+0.23}_{-0.18})\times 10^{-2}$ from which the exclusive $\eta\prime$ meson production cross section is determined to be $(1.12\pm{0.15}^{+0.42}_{-0.31})\mu b$. Differential cross section distributions have been measured. Their shape is consistent with isotropic $\eta\prime$ meson production.Comment: 14 pages, 5 figures, accepted by Phys.Lett.

Occupational stress, work-home interference and burnout among Belgian veterinary practitioners

There have been few formal studies on stress in veterinary surgeons and, in the rare studies available, stress is not examined jointly through the levels of job strain and job engagement, the sources of stress in the issue of work environment and the work-home interference. The authors' goal in this study was to analyse job engagement, job strain, burnout, work-home interference and job stress factors among 216 Belgian veterinary surgeons. Rural practice was compared to small animal and mixed activity. The mean job strain and job engagement level in veterinary surgeons was not higher than what we found in other working populations. However, 15.6% of the group were found to be suffering from high burnout. Rural practitioners had a lower level of job engagement than small animal veterinary surgeons. These small animal practitioners had a lower level of job strain than the mixed practitioners. The level of burnout did not differ significantly across the three types of activity. In comparison to other Belgian and Dutch workers, veterinary surgeons perceived more negative work-home interference. Bovine and mixed practitioners were the most concerned with this problem. The two most important sources of stress reported by bovine practitioners were relations to farmers and working time management (including emergencies and availability)

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