ALBERT

Notes: [Auszug] A specimen prepared hydrothermally at 715 C, and 1,100 bars showed negligible loss of weight over the range 1001,400 C. There was no change in X-ray powder pattern up to 954 C,, but by 1,090 C. transformation to rankinite had occurred. Specimens prepared under these or similar conditions are ...

Notes: [Auszug] THE organ culture system has been used to investigate in vitro the thyroid gland of several mammalian species1"3 including man4"7. The persistence of the human thyroid organ-specific antigen in tissue (cell) cultures has been investigated with the immunofluorescence technique using human ...

Notes: The selection by sheep (six Coopworth ewe hoggets, 44·3 ± 4·6 kg live weight) and goats (six Saanen/Anglo-Nubian yearling males, 38·1 ± 3·8 kg live weight) for perennial ryegrass (Lolium perenne) and white clover (Trifolium repens) and for sward height was measured in two experiments involving paired turves. Pairs of turves with herbage of differing height and of either the same or different plant species were offered. One sward (fixed height species, FHS) was always offered at 130 mm and the other (variable height species, VHS) at 130, 90 or 50 mm. Turves (450 mm × 220 mm) were cut to a soil depth of 100–150 mm from areas of perennial ryegrass and white clover regrown to the desired height after previously being cut to 30 mm. Each turf in a pair was weighed (±1 g) before and after grazing by penned animals maintained on a barley-based pelleted diet. The number of prehending bites taken from each turf was recorded over a grazing period (128 ± 12 s). Bite mass, bite rate and intake rate were calculated.As the sward height of the VHS turf declined, an increasing proportion of the diet was selected from the 130 mm turf. When averaged over all height contrasts, both animal species selected a higher proportion (0·776 ± 0·026) of their diet from 130-mm white clover than from 130-mm perennial ryegrass (0·591 ± 0·018) turves. On average, goats selected a higher proportion (0·721 ± 0·022) of their dry-matter (DM) intake from the 130-mm turf than sheep (0·646 ± 0·019), but the effect was not consistent. In contrasts with perennial ryegrass as the VHS (and both perennial ryegrass and white clover as FHS), the proportion of the diet selected from the 130-mm turf was very similar for both animal species. However, with white clover as the VHS (and both perennial ryegrass and white clover as FHS), goats selected a higher proportion of their intake from the 130-mm turf to the extent that in the 130-mm perennial ryegrass/50-mm white clover contrast sheep showed as strong selection for 50-mm white clover as goats did for 130-mm perennial ryegrass. This lesser selection of goats for white clover as its height in a sward declines is likely to contribute to the higher white clover content observed in swards grazed by goats.Bite mass was greater on white clover (246 ± 5 mg DM bite–1) than on perennial ryegrass (173 ± 5 mg DM bite–1) and was greater for goats (255 ± 6 mg DM bite–1) than for sheep (195 ± 5 mg DM bite–1). Bite rate was greater on perennial ryegrass (45·9 ± 1·0 bites min–1) than on white clover (39·9 ± 1·0 bites min–1) and was greater for sheep (45·5 ± 1·1 bites min–1) than for goats (42·5 ± 1·1 bites min–1). Apparent intake rate by both sheep and goats was lower (mean, 5·0 ± 0·29 g DM min–1) on 130 mm perennial ryegrass/white clover than on 130 mm perennial ryegrass/perennial ryegrass (7·0 ± 0·27 g DM min–1), but was higher (9·62 ± 0·29 g DM min–1) on 130-mm white clover/perennial ryegrass than on 130-mm white clover/white clover (8·2 ± 0·29 g DM min–1) combinations.

Notes: [Auszug] Two year science-based general degree courses followed by two years of specialized degree work could be the answer to the growing demand for places in higher education. Such changes are also needed to satisfy educational and manpower ...

Notes: Large crystals of cadmium tartrate pentahydrate, CdC4H4O6. 5H2O, have been grown by precipitation in a silica-gel medium. The crystals grew as parallelepipeds in the monoclinic class, with a = 6.129, b = 12.314, c = 7.627 Å, β = 116°14′, and space group P21. The material is piezoelectric.