Stabilization of the ends of the vas deferens facilitates accurate microsurgical vasovasostomy. Commercially available approximating clamps are prone to slippage. We have modified our approximating clamps by folding stainless steel wire over the tips of the clamp blades and soldering them in place. The wire is trimmed to allow a ...

In summary, it might be said that there is no simple answer to the problems inherent in the search for safer insecticides by rational methods. However, the subject has not yet been fully explored and opportunities remain for exploitation. The extent to which this is done will depend on more ...

As part of a research project concerning repeated short-term sick-leave an intensive study has been performed aiming at estimating the frequency and character of psycho-social problems in a population with a minimum of six short sick spells during a 12-month period, in comparison with an age- and sex-matched sample of ...

Cross-validated the CPI Repeated Item Short Form (RISF). Three populations (police dispatcher recruits (N = 22), college students (N = 30), and penitentiary prisoners (N = 51) were used for comparison purposes. Each S was administered the full-length CPI, from which scores for the short forms were extracted. CPI short-form ...

Infective larvae were harvested from a culture of eggs collected from adult Strongylus asini recovered from a free-ranging Burchell's zebra, Equus burchelli, in the Kruger National Park. Worm-free zebra, horse and donkey foals were successfully infested, but infestation failed in a mule foal. At slaughter, 117-125 days post-infestation, S. asini ...

The Commission of the European Communities has been carrying out scientific investigations on asbestos for some years. The principal activity has been the regular meetings of two European Communities panels of scientific consultants concerned primarily with the pathology of the asbestos-related diseases, asbestosis and mesothelioma. In addition, the Commission has ...

Scientific communications have two main forms, oral presentation at scientific meetings, accompanied by audio-visual aids, and manuscripts prepared for publication in scientific journals. In an oral presentation, the author should be prepared to speak for ten minutes, without depending on notes, and have prepared answers to anticipated questions. Slides are ...

Differential labeling of mates, based on the selective uptake of cobalt by mitochondria of one of the partners, has been used to determine visually by means of phase-contrast microscopy whether transfer of mitochondria occurs after hyphal fusion. Compatible and incompatible matings of the tetrapolar basidiomycete, Schizophyllum commune, were studied. Transfer ...

The article by Drill and Calhoun (219: 583, 1972) and subsequent comments (220: 416, 1972, and 221: 194, 1972) on the problem of thromboembolic episodes and oral contraceptives consider at length the problems of retrospective and prospective studies. If the critical standards presented had been applied to the articles cited ...

The major site of sorption of zinc-65 in natural, matlike periphyton is on the upper surface of the community. There is a diffusion gradient within the community. Expression of results from short-term spiking experiments should thus be presented on an areal rather than gravimetric basis.

Voelz, Herbert (University of West Virginia, Morgantown), and Donald J. Niederpruem. Fine structure of basidiospores of Schizophyllum commune. J. Bacteriol. 88:1497-1502. 1964.-The fine structure of basidiospores of the wood-rotting mushroom Schizophyllum commune was elucidated. Ungerminated spores were characterized by a fibrous cell wall, a cytoplasmic membrane, electron-dense granules, nuclei surrounded ...

Where large-scale molluscicide applications are anticipated, it is important to investigate the effects of the chemicals to be used on the freshwater microflora and fauna existing in the bodies of water to be treated. The food chains of which these organisms form basic parts are important in the general ecology ...