238,903 research outputs found
Microsporogenesis and pollen abortion in Bruce plum (Prunus salicina x P. augustifolia)
No full textInvestigations were undertaken to determine the causes of high rate of pollen abortion in Bruce plum (Prunus salicina x P. angustifolia). Microspore and pollen development in the pollen-fertile Methley plum (P. salicina x P. cerasifera) was compared with the same process in Bruce plum. Difficulties in the pairing of homologous chromosomes in the microspore mother cell of Bruce plum and the abnormality in the subsequent meiotic mechanism such as irregular orientation of chromosomes at the metaphase plate during division I and unequal distribution and disorganized condition of haploid chromosomes during division II, appear to be the prime cause of the high rate of pollen abortion. This situation appears to be inherent to the Bruce plum variety which suggests that the P. salicina and P. angustifolia cross producing Bruce plum was a wide one. Occasionally, the nucleus of the microspore mother cell of Bruce plum showed an eccentric development of pachytene loops causing some chromatin material to remain outside the nuclear membrane. This irregularity in the behavior of meiotic chromosomes probably contributed to a lesser extent to the high rate of pollen abortion in the Bruce plum. Application of plant growth regulators under the conditions of the experiment failed to correct the defective meiotic mechanism in the Bruce plum anther. Moreover, gibberellic acid application, either singly or in combination with kinetin, accelerated the growth of tapetum cells. In some cases the tapetum cells occupied almost the entire space in the locule leaving no room for the development of microspores or pollen grains
Australians in the suburbs watch as M. Lavrov from the Soviet Union carries a drink at the halfway mark of the 50 kilometres walk, Melbourne, 24 November, 1956 [picture] /
No full textPart of the collection: Olympic Games, Melbourne, Victoria 1956.; Title devised by cataloguer from typed label on reverse.; Inscriptions: "Australians at the Olympics in the suburbs, watch as M. Lavrov from the USSR carries a drink at the halfway mark of the 50 kilometres walk"--Typed label on reverse; "24.11"--In ink lower left.; Also available in electronic version via the Internet at: http//nla.gov.au/nla.pic-vn4278496-s108; Donated through the Australian Government's Cultural Gifts Program by Bruce Howard, 2007.; Published in: 15 days in '56 / Bruce Howard. Sydney : Angus & Robertson, 1995, p. 53.Australians watch the Olympics in the suburbs, M. Lavrov from (USSR) carries a drink at the halfway mark of the 50 kilometres wal
Review of "Miraculous Encounters: Pontormo from Drawing to Painting" by Bruce Edelstein and Davide Gasparotto, eds.
No full textBruce Edelstein and Davide Gasparotto, eds. Miraculous Encounters: Pontormo from Drawing to Painting. Los Angeles: J. Paul Getty Museum, 2018. 160 pp. + 60 color illustrations. $40.00. Review by Livia Stoenescu, Texas A&M University
The old Tower Hotel, Kalgoorlie, Western Australia, ca. 1972 [picture] /
No full textPart of the collection: Australian pubs collection, 1971-1973.; Photograph of a drawing by M. Szymatowicz of the old Tower Hotel built in 1899.; Published in: Australian pubs by John Larkins and Bruce Howard. Adelaide : Rigby, 1973.; Title devised by cataloguer from information in publication.; Also available in an electronic version via the internet at: http://nla.gov.au/nla.pic-vn4361454
Cultural Implications: achieving anti-discriminatory practices
No full textNotions of discrimination have a wide range of interpretations which can be applied to a variety of contexts. This chapter discusses the topic within the framework of a practice which evolves. In short it is argued that discriminatory practices change, and this is evident in the move away from overt acts towards those less easily observed forms that are increasingly channelled through the medium of culture
Start of the second semi-final of the men's 800 metres race, Melbourne Cricket Ground, 1956 [picture] /
No full textPart of the collection: Olympic Games, Melbourne, Victoria 1956.; Title devised by cataloguer from typed label on reverse.; Inscriptions: "Start of second semi-final of men's 800 metres: From left: D. Johnson (Great Britain & Northern Ireland), A. Boysen (Norway), E. Depastas (Greece), E. Leva (Belgium), J. Bailey (Australia), M. Rawson (Great Britain & Northern Ireland), R. Djian (France) and A. Sowell (USA). MCG"--Typed label on reverse.; Also available in electronic version via the Internet at: http//nla.gov.au/nla.pic-vn4278496-s104; Donated through the Australian Government's Cultural Gifts Program by Bruce Howard, 2007.; Published in: 15 days in '56 / Bruce Howard. Sydney : Angus & Robertson, 1995, p. 57
Kemponia paulsoni Bruce 2003
No full textKemponia paulsoni (Bruce, 2003) Periclimenes paulsoni Bruce, 2003: 119 –120, fig. 3 A–P. Type material. Holotype ɗ, QM W 26557. Type locality. Cape Flattery, Queensland, Australia. Habitat. Only known specimen obtained from wharf pile scrapings. Bathymetric range. 7 m. Distribution. Known from type locality only.Published as part of Bruce, A. J., 2004, A partial revision of the genus Periclimenes Costa, 1884 (Crustacea: Decapoda: Palaemonidae), pp. 1-26 in Zootaxa 582 on page 18, DOI: 10.5281/zenodo.15739
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A letter from Bruce Williams to Dr. Hector P. Garcia, asking him for a professional Estimate of Maria M. Chavez, who is a candidate for a fellowship of the Rockefeller Foundation.
No full textA letter from Bruce Williams, Assistant Director of the Rockefeller Foundation, to Dr. Hector P. Garcia, asking him for a professional Estimate of Maria M. Chavez, who is a candidate for a fellowship of the Rockefeller Foundation
How does othering constitute cultural discrimination?
No full textA common theme across all chapters in this book is that interaction between schooling and students is influenced by a range of social and cultural factors. This chapter sets out to demonstrate how certain sets of social and cultural factors—in particular public notions of a differentiated other—hold the potential to draw disparate groups of people together. In particular, we find groups which would not usually be allies banded together through their involvement in processes of othering. In many cases such processes transcend the traditional lines of division that characterize and separate the groups generating this discourse
Technophiles and Technophobes?
No full textRather than extol the benefits of new technologies in relation to pedagogy, this chapter seeks to unpack several of the broader social issues related to the rapid development of new technologies, and how these issues come to ground in schools. Clearly the integration of technology into the day-to-day educational practices of schools has been far from seamless. Usually debates about the efficacy of technology are bifurcated. On one side are technophobes or neo-Luddites who campaign against the negative outcomes of what they generally interpret as an over reliance on technology. On the other side are technophiles who naively position technology as a panacea for a multitude of problems faced by schools. Although both sides offer valid comment, as is often the case with extremely divergent opinions, a more accurate assessment is located somewhere in between these extreme positions. Despite the existence of a continuum of technological endorsement in society, it is important to note that many practicing teachers share a commonly focused understanding of the advantages and problems associated with technology within their schools. This perception of technology centres on teacher and student ability to manipulate technology as hardware, technology as software, and increasingly, technology as function
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