Observations of the microtubular 'km' system and filamentous ' M ' systems in living specimens of Stentor coerulens show that on contraction of the body both systems shorten, thicken and remain straight, but that on initial relaxation they behave differently: the km fibres begin to lengthen later than the M fibres, the latter being thrown into sinuous folds. Electron microscopy of specimens coo...

Systematic studies of phenotypic diversity--required for understanding evolution--lag behind investigations of genetic diversity. Here we develop a quantitative approach to studying behavioral diversity, which we apply to swimming of the ciliate Tetrahymena. We measure the full-lifetime behavior of hundreds of individual organisms at high temporal resolution, over several generations and in div...

1Department of Physics and Astronomy, University College London, Gower Street, LondonWC1E 6BT, UK 2Laboratoire d’Etudes Spatiales et d’Instrumentation en Astrophysique (LESIA), Observatoire de Paris, CNRS, UPMC Univ. Paris 06, Univ. Paris-Diderot, 5 place Jules Janssen, Meudon Cedex 92195, France 3Atmospheric, Oceanic and Planetary Physics, Clarendon Laboratory, University of Oxford, Parks Road...

Comparative Effects of Diaxepam and Midazolam on Paraoxon Toxicity in Rats. KRUTAKKROL, H., AND DOMINO, E. F. (1985). Toxicol. Appl. Pharmacol. 81,545-550. The present study was undertaken to compare the effectiveness of a new water-soluble benzodiazepine, midazolam, to diazepam, both administered im for protection against diethyl-pnitrophenyl phosphate (paraoxon) toxicity. Adult male Sprague-D...

Patients were randomly allocated to one of two groups; intravenous or epidural analgesia, with twenty patients in each group. General anesthesia was induced with thiopentone 5-6 mgkg-1 and maintained with 0.8-1.0% isoflurane and 66% nitrous oxide in 33% O2. The trachea was intubated after administration of vecuronium 0.1 mgkg-1. Patients in the epidural analgesia groups then received, by random...

In India, agricultural soil has been deteriorated by various on-going practices involving application of chemical fertilizers, pesticides and effluents. Presently, Amritsar (Punjab), an agricultural land, is undergoing rigorous cultivation of wheat and rice crops which consequently increased the application of chemical pesticides and fertilizers for high yield. These agricultural practices are ...