Institution
La Trobe University
Education•Melbourne, Victoria, Australia•
About: La Trobe University is a education organization based out in Melbourne, Victoria, Australia. It is known for research contribution in the topics: Population & Health care. The organization has 13370 authors who have published 41291 publications receiving 1138269 citations. The organization is also known as: LaTrobe University & LTU.
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TL;DR: S-type granites have properties that are a result of their derivation from sedimentary source rocks, from which granite magmas may be formed as discussed by the authors, however, their association with high grade metamorphic rocks is uncommon.
Abstract: S-type granites have properties that are a result of their derivation from sedimentary source rocks. Slightly more than half of the granites exposed in the Lachlan Fold Belt of southeastern Australia are of this type. These S-type rocks occur in all environments ranging from an association with migmatites and high grade regional metamorphic rocks, through an occurrence as large batholiths, to those occurring as related volcanic rocks. The association with high grade metamorphic rocks is uncommon. Most of the S-type granites were derived from deeper parts of the crust and emplaced at higher levels; hence their study provides insights into the nature of that deeper crust. Only source rocks that contain enough of the granite-forming elements (Si, Al, Na and K) to provide substantial quantities of melt can produce magmas and there is therefore a fertile window in the composition of these sedimentary rocks corresponding to feldspathic greywacke, from which granite magmas may be formed.In this paper, three contrasting S-type granite suites of the Lachlan Fold Belt are discussed. Firstly, the Cooma Granodiorite occurs within a regional metamorphic complex and is associated with migmatites. It has isotopic and chemical features matching those of the widespread Ordovician sediments that occur in the fold belt. Secondly, the S-type granites of the Bullenbalong Suite are found as voluminous contact-aureole and subvolcanic granites, with volcanic equivalents. These granites are all cordierite-bearing and have low Na2O, CaO and Sr, high Ni, strongly negative eNd and high 87Sr/86Sr, all indicative of S-type character. However, the values of these parameters are not as extreme as for the Cooma Granodiorite. Evidence is discussed to show that these granites were derived from a less mature, unexposed, deeper and older sedimentary source. Other hypotheses such as basalt mixing are discussed and can be ruled out. The Strathbogie Suite granites are more felsic but all are cordierite-bearing and have chemical and other features indicative of an immature sedimentary source. They are closely associated with cordierite-bearing volcanic rocks. The more felsic nature of the suite results in part from crystal fractionation. It is suggested that the magma may have entered this “crystal fractionation” stage of evolution because it was a slightly higher temperature magma produced from an even less mature sediment than the Bullenbalong Suite. The production of these S-type magmas is discussed in terms of vapour-absent melting of metagreywackes involving both muscovite and biotite. The production of a magma in this way is consistent with the low H2O contents and geological setting of S-type granites and volcanic rocks in the Lachlan Fold Belt.
216 citations
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TL;DR: This work reviews the current knowledge of the modulation of bacterial AAA+ proteases by these cellular arbitrators and proposes a strategy to manage these many, varied tasks.
Abstract: Members of the AAA+ protein superfamily contribute to many diverse aspects of protein homeostasis in prokaryotic cells. As a fundamental component of numerous proteolytic machines in bacteria, AAA+ proteins play a crucial part not only in general protein quality control but also in the regulation of developmental programmes, through the controlled turnover of key proteins such as transcription factors. To manage these many, varied tasks, Hsp100/Clp and AAA+ proteases use specific adaptor proteins to enhance or expand the substrate recognition abilities of their cognate protease. Here, we review our current knowledge of the modulation of bacterial AAA+ proteases by these cellular arbitrators.
216 citations
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TL;DR: Findings related to predictors of body dissatisfaction revealed that both social and psychological factors contributed to body image changes in pregnancy.
216 citations
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TL;DR: Results suggest that an AEP is responsible for catalyzing both peptide bond cleavage and ligation of cyclotides in a single processing event.
216 citations
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TL;DR: This article examined the effect of foreign institutional investors on firm innovation and found that foreign institutional ownership has a positive, causal effect on the firm innovation in 26 non-U.S. economies between 2000 and 2010.
Abstract: We examine the effect of foreign institutional investors on firm innovation. Using firm-level data across 26 non-U.S. economies between 2000 and 2010, we show that foreign institutional ownership has a positive, causal effect on firm innovation. We further explore three possible underlying mechanisms through which foreign institutions affect firm innovation: Foreign institutions act as active monitors, provide insurance for firm managers against innovation failures, and promote knowledge spillovers from high-innovation economies. Our article sheds new light on the real effects of foreign institutions on firm innovation.
216 citations
Authors
Showing all 13601 results
Name | H-index | Papers | Citations |
---|---|---|---|
Rasmus Nielsen | 135 | 556 | 84898 |
C. N. R. Rao | 133 | 1646 | 86718 |
James Whelan | 128 | 786 | 89180 |
Jacqueline Batley | 119 | 1212 | 68752 |
Eske Willerslev | 115 | 367 | 43039 |
Jonathan E. Shaw | 114 | 629 | 108114 |
Ary A. Hoffmann | 113 | 907 | 55354 |
Mike Clarke | 113 | 1037 | 164328 |
Richard J. Simpson | 113 | 850 | 59378 |
Alan F. Cowman | 111 | 379 | 38240 |
David C. Page | 110 | 509 | 44119 |
Richard Gray | 109 | 808 | 78580 |
David S. Wishart | 108 | 523 | 76652 |
Alan G. Marshall | 107 | 1060 | 46904 |
David A. Williams | 106 | 633 | 42058 |