The biology of Hakea ulicina R. Br. and H. repullulans H. M. Lee (Proteaceae)

Abstract

A new species, Hakea repullulans H. M. Lee, is described. Morphological and anatomical differences between H. ulicina and H. repullulans, their distribution, variation of adult and juvenile foliage in geographically isolated populations and the effects of fire are described.

Delayed Fracture Properties of 1500 MPa Bainite/Martensite Dual-phase High Strength Steel and Its Hydrogen Traps.

“…(7) by combining Eqs. (5) and (6). Thus, the binding energy between trap site i and hydrogen can be obtained.…”

“…If the amount of one type trap is different in two specimens, the difference of trap parameter (Da) of the two specimens can be obtained from Eq. (6). (6) where D A1 is apparent diffusion coefficient in specimen 1, D A2 is apparent diffusion coefficient in specimen 2, in which the amount of trap site i is varied from specimens 1, DN i is the difference in the number of trap site i between specimen 1 and 2.…”

“…The electrochemical permeation technique with simplicity, high sensitivity and flexibility, developed by Devanathan and Stachurski, 3) has proved to be very important to the studies of hydrogen behaviour in materials. In general, some crystal defects such as dislocations, 4) grain boundaries, 5) inclusion interfaces, 5) carbide interfaces, 6) exist in metals and alloys, which as hydrogen traps may reduce diffusion coefficient of hydrogen. Therefore, controlling the hydrogen traps in high strength steels could improve their delayed fracture properties.…”

Patterns of morphological variation within Acacia suaveolens (Mimosaceae)

“…However, resprouting forms have been reported in a number of other Australian species (e.g. Lee 1984;Pate et al 1991) The trends in differences between phyllodes among the five morphological forms are maintained in their seedlings, even though the absolute values of the attributes may vary. This indicates that, while the measured attributes are clearly influenced by environmental conditions, the limitations on the size of an attribute under a given set of environmental conditions vary between the morphological forms.…”

Crystallization and preliminary X-ray analysis of two density populations of feline calicivirus

“…Five different buffers, phosphate buffer (pH 7.4), Tris-acetate (pH 7.4 and pH 8.4), boric acid buffer (pH 7.4 and pH 8.6) and PEG 3350 were used in initial crystallization trials for FCV. All experiments were set up using the hanging-drop vapor-diffusion method at 295 K. On the basis that the solubility of most proteins will be increased by adding salt and that a sodium sal t partially stabilized a feline calicivirus against heating (Lee & Gillespie, 1973), sodium chloride was included during FCV purification and crystallization. Crystallization set up in all the five buffers produced small crystals within 1 d. The crystals grown at pH 8.4 or pH 8.6 appeared to be very unstable and to aggregate with some precipitates a few days later.…”