1,798 research outputs found
Colin Humphris
No full text"Colin Humphris 2 Sqdrn. RAAF. 1941 - 1942 Author of - 'Trapped on Timor' (as a result of bombing of Darwin Feb. 19, 1942)".Colin Humphris. 2 Squadron, Royal Australian Air Force 1941 - 1942. Author of - 'Trapped on Timor' (as a result of bombing of Darwin February 19, 1942)
University student news - Vol. 46, no. 2 (Oct. 29, 1982)
No full textGolden Bulls Vs. Rams Homecoming '82-'83; Alumni Affair; Profile on Acting President; Colin Stamp Speaks; Class News; Through the Years Smith's Success Story; Ghost in Duke Hall?; Spirit Square; Marching Bulls Impressive; Golden Bulls Successful
Orbit design for future SpaceChip swarm missions in a planetary atmosphere
No full textThe effect of solar radiation pressure and atmospheric drag on the orbital dynamics of satellites-on-a-chip (SpaceChips) is exploited to design equatorial long-lived orbits about the oblate Earth. The orbit energy gain due to asymmetric solar radiation pressure, considering the Earth's shadow, is used to balance the energy loss due to atmospheric drag. Future missions for a swarm of SpaceChips are proposed, where a number of small devices are released from a conventional spacecraft to perform spatially distributed measurements of the conditions in the ionosphere and exosphere. It is shown that the orbit lifetime can be extended and indeed selected through solar radiation pressure and the end-of-life re-entry of the swarm can be ensured, by exploiting atmospheric drag
Public Policy in a Private Arena: The Case of Vocational Education and Training
No full textM.21586-1998 Colin Crouch. 30 cm. This paper is based on a seminar that he presented at the Center for Advanced Study in the Social Sciences of the Juan March Institute, Madrid, on 9 May 1995, entitled Diversity in Modern Capitalism: Examples from Vocational Education." -- T.p. Includes bibliographical references (p. 35-37
Lepidosperma viscidum R. Br.
No full text2.3. F type propolis and its botanical source from L. viscidum A plant source foraged by honey bees to produce propolis on Kangaroo Island was found to be the resinous exudate of Lepidosperma sp. Montebello (Duke et al., 2017). The resinous exudates from other species of Lepidosperma genus collected on KI and south-east South Australia were compared by TLC and 1 H NMR analysis with propolis samples. A close match was found for both TLC (Supplementary data, Fig. 3S) and 1 H NMR spectra profiles (Fig. 5) between resin from L. viscidum (Fig. 4S) and propolis samples rich in 1 H NMR signals characteristic of flavanones, designated as F type propolis. F type propolis is relatively uncommon on KI (18 out of 2602 samples) and relatively common in south-east South Australia (4 out of 11 samples). This frequency of appearance is consistent with the uncommon occurrence of L. viscidum on KI and its common occurrence in the areas in South Australia from where F-type propolis samples were collected. L. viscidum resinous leaf and leaf base ethanol extract from Seal Bay, KI, was fractionated by normal-phase short column vacuum chromatography and fractions of sufficient purity were characterised by 1 H and 13 C NMR spectra and mass spectrometry resulting in the identification of five compounds 4, 5, 8, 9 and 10. Chemistry of L. viscidum resin is markedly different from that previously observed in another propolis resin sourced from Lepidosperma genus on Kangaroo Island (Duke et al., 2017; Abu-Mellal et al., 2012). This propolis type has resin sourced from Lepidosperma sp. Montebello, with chemistry extensively investigated (Duke et al., 2017; Abu-Mellal et al., 2012). The compounds isolated from resins of that species are predominantly C- and O-prenylated hydroxystilbenes or derivatives thereof, many with piceatannol as base structure. By comparison, L. viscidum resin appears to be predominantly 6- or 8-methyl or dimethyl polyhydroxyflavanones 8, 9 and 10 (Fig. 6); 1 H NMR spectra of less pure fractions also suggests the presence of some O-methylated flavanones. Notably, prenylation appears to be less common in L. viscidum resin compounds, with the exception of the two dihydrochalcones, 4 and 5, isolated. Compounds similar to 4 and 5 without the 4-hydroxyprenyl substituent, 4,2 ′,4 ′ -trihydroxydihydrochalcone (davidigenin) (Jensen et al., 1977) and 4,2 ′ -dihydroxy-4 ′ -methoxydihydrochalcone (Kostrzewa-Susłow and Janeczko, 2012) have 1 H and 13 C NMR spectral results that show good partial concordance with 4 and 5. The most similar structure to 5 reported was 3 ′ -prenyl-4,2 ′ -dihydroxy-4 ′ -methoxydihydrochalcone (Awouafack et al., 2010). The stereoisomer identified in 4 and 5 was the E configuration. This configuration is reported to be predominant in terminally-hydroxylated prenyl groups in natural products (Erasto et al., 2004; Nguyen et al., 2012). Compounds 4 and 5 are previously undescribed: a number of 3 ′ -prenyl hydroxydihydrochalcones have been reported from natural sources but no 5 ′ -prenylated structures to date. These 3 ′ -prenyl hydroxydihydrochalcones have been isolated from genera Angelica (Apiaceae) (Luo et al., 2012a), Artocarpus (Moraceae) (Jamil et al., 2008), Bacopa (Plantaginaceae) (Suresh et al., 2010), Broussonetia (Moraceae) (Luo et al., 2012b), Eriosema (Fabaceae) (Awouafack et al., 2008, 2010) and Lonchocarpus (Fabaceae) (Borges-Arg´aez et al., 2009), none of these genera being closely related to the Cyperaceae. Limited information on biological activity of these compounds exists, but one is a reported strong free radical scavenger by the DPPH assay (Jamil et al., 2008) and another has been observed to inhibit aromatase (Luo et al., 2012b). The molecular weight of compounds identified as 5,7,4 ′ -trihydroxy- 6,8-dimethylflavanone (farrerol) (8), 5,7,3 ′,5 ′ -tetrahydroxy-6,8-dimethylflavanone (9) and 5,7,3 ′,5 ′ -tetrahydroxy-6-methylflavanone (10) was determined by mass spectrometry. Close matches with literature 13 C NMR and 1 H NMR spectra enabled identification of the structures of these known compounds: farrelol (8) (Lai et al., 2016); 9 (Lou et al., 2015); 10 (Yi et al., 2002; Zhang et al., 2018). Farrerol (8) has a long history in the literature and has been isolated from plants from a widespread number of genera (Lai et al., 2016). Compound 9 has previously been isolated from Rhododendron dauricum (Ericaceae) (Wang et al., 2015) as per farrerol, and 10 from the conifer Pseudotsuga sinensis (Pinaceae) (Yi et al., 2002; Zhang et al., 2018). Neither species belong to families closely related to the Cyperaceae. No reports of biological activity for these compounds were found (Wang et al., 2015; Yi et al., 2002; Zhang et al., 2018). F type propolis and its resin source L. viscidum are a promising source of a diverse range of flavanones of potentially useful biological activity, and of farrerol, a compound of intense pharmaceutical interest (Dai et al., 2016) and long-term traditional use (Chen et al., 2009).Published as part of King, Douglas I., Hamid, Kaiser, Tran, Van H., Duke, Rujee K. & Duke, Colin C., 2021, Kangaroo Island propolis types originating from two Lepidosperma species and Dodonaea humilis, pp. 1-11 in Phytochemistry (112800) (112800) 188 on page 6, DOI: 10.1016/j.phytochem.2021.112800, http://zenodo.org/record/825922
(The) man, his body, and his society: masculinity and the male experience in English and Scottish medicine c.1640-c.1780.
No full textThis thesis examines the relationship(s) between medicine, the body and societal codes of masculinity in England and Scotland between c.1640 and c.1780. It responds to the way in which the men in histories of post-1660 masculinity are often disembodied, and to the comparative absence of men’s gendered experiences from the history of medicine. Its findings show that in both centuries the experience of being a man with a body that was the site of health and sickness was an open, candid, and often communal, one, inside and outside of the formal medical encounter. Thus, and on both sides of 1700, ill men had full freedom in the pursuit and acceptance of medical, familial and social assistance, while their physical suffering, and associated emotional distress, was met with sympathy. With their sick bodies the sites of honest self-examination and open discussion, it was in part this very public nature of their sicknesses that allowed men, as a gender and as individuals, independence and agency in their non-commercial health care. Indeed, later-seventeenth- and eighteenth-century men suffered no constraints in their ability to respond to the vulnerabilities of their bodies, even where this involved behaviours or attributes allegedly associated with women and femininity, or inconsistent with ideals of active, independent, masculinity.
These findings indicate, therefore, great continuity across the period 1640-1780, and not only in masculine ideals of and involving the male corporeality. There seems to have been significant consistency across time in men’s social and medical experiences of both sickness and their pre-emptive preparation for it, and in an apparent collective self-confidence concerning their corporeal masculinity, their sex, and, possibly, even their sexual potential. Indeed, these sources suggest that seventeenth- and eighteenth-century men had a resilient sense of self-identity (and personal masculinity), conceptually separable from the corporeal body and its known fragilities
Oregon statewide status and trends report
No full textReport -- Appendix A. Black Rock Desert-Humboldt -- Appendix B. Columbia River -- Appendix C. Deschutes -- Appendix D. Goose Lake -- Appendix E. Grande Ronde -- Appendix F. John Day -- Appendix G. Klamath -- Appendix H. Malheur -- Appendix I. Mid Coast -- Appendix J. Middle-Columbia-Hood -- Appendix K. North Coast-Lower Columbia -- Appendix L. Oregon Closed Basins -- Appendix M. Owyhee -- Appendix N. Powder-Burnt -- Appendix O. Rogue -- Appendix P. Sandy -- Appendix Q. Snake River -- Appendix R. South Coast -- Appendix S. Umatilla-Walla Walla-Willow -- Appendix T. Umpqua -- Appendix U. Willamette.prepared by: Colin Donald and Ryan Michie.Title from PDF cover (viewed on November 4, 2022).This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Includes bibliographical references.Mode of access: Internet from the Oregon Government Publications Collection.Text in English
Mangrove reforestation in Panama: an evaluation of planting in areas deforested by a large oil spill
No full text[Extract] Although the monitoring study commenced in February 1989, it was apparent that natural regenerative processes of R. mangle forests were under-estimated in the earlier planting program. Following the large oil spill in April 1986, the Refineria Panama initiated its large scale planting program based on the rationale that, they were responsible for the large oil spill and resulting deforestation of mangrove, and they wanted to restore these areas to their pre-spill condition. The methodology of planting was developed from preliminary experiments and observations which determined that, natural recruitment was disrupted and inadequate, and growth and survival of seedlings was seriously suppressed by residual oil in sediments. However, as described in this chapter, natural recruitment following the spill was both plentiful and effective in most areas, and growth and survival of established plants were not seriously affected by residual oil in sediment. Furthermore, planted seedlings were expected to die in most oil gaps since natural recruits were beginning to shade them, particularly in sheltered sites. Such observations imply that many sites might have been no worse off, had there been no planting. In support of this proposal, the largely successful restoration of 49 ha of mangroves from an earlier large oil spill in Bahía Las Minas in 1968, was completely unassisted (Duke et al. in press c). On the other hand, it is suggested that assistance was required to protect damaged foreshore areas because despite differences in assistance between the 1968 and 1986 spills, equivalent areas of exposed habitat were lost by erosion after each. Following the 1986 spill, both planted and natural seedlings were unable to develop sufficient size in exposed sites before protective above-ground roots of oil-dead R. mangle trees had decomposed, 5-6 yr post spill (Fig. 15.3). Young plants were damaged and killed by drift material and erosion. These seedlings required at least another 2-3 yr development before they could become independent in such exposed sites. Planted recruits might have met the requirement to be independent sooner since their growth rates were apparently increased with upland soil and fertilizer, but the 1988 planting was too late in exposed 1986 oil-damaged sites. As a result, many exposed oil-damaged sites were lost or seriously eroded, 7-8 yr post spill, after showing vigorous recruitment earlier when dead above-ground roots were present. In retrospect, it might have been better to have conducted an interactive restoration program, balancing the benefits of selected planting, enhancing natural recruitment and growth, with the installation of devices to protect seedlings and surviving trees where they were vulnerable to damage once protective oil-dead stumps and roots began to deteriorate. It was also apparent from the monitoring study that the planting might have altered or damaged some sites. A comparison of plots in planted and not planted sites showed planted ones had lower densities, shorter trees and smaller vegetated biomass, in both sheltered and exposed locations. It is not known how these factors might effect long term recovery of oil gap sites, but the effect is considered detrimental. It is possible also that planting activities may not have caused the situation since the planting program might have planted seedlings in more damaged sites, implying unintentional bias in the sampling strategy of the monitoring study. But, this seems unlikely for several reasons. First, it was difficult to distinguish and rank oil-damaged sites based on anything but size, without conducting an expensive hydrocarbon sampling program. Second, sites in the monitoring study were chosen randomly. And third, there were independent observations of greater site alteration and activities than reported (Fig. 15.3). These observations combined with other possible reasons for negative effects on mangrove forest recovery caused by planting activities include: cutting and removal of dead timber including boat access, removing shelter for seedlings and sediments, especially in exposed locations; trampling of sediment resulting in soil compaction and release of residual oil; digging holes for planting, assisting erosion and release of residual oil; and interfering with natural recruitment by direct damage to existing seedlings (from the previous three activities), and disruption to seedling establishment in the future. In summary, there are several recommendations from the monitoring study in Bahía Las Minas which might be applied to oil spills affecting mangroves in the future and elsewhere. The recommendations include: • assessing methods of cleaning and promoting the survival of 'key' fringing mangrove trees oiled in exposed locations, at the time of the spill; • mapping the extent of oiling at the time of the spill, and storing samples of floating oil; • mapping areas of defoliation and subsequent deforestation shortly following the spill; • measuring the concentration of oil in sediments 1-2 mo post spill, and regularly afterwards; • assessing the condition of deforested sites for original structure and composition; • assessing the condition of deforested sites for presence/absence of seedlings (old seedling bank); • determining seasonal variation and availability of local propagule supply; • measuring topographic and sediment profiles across the mangrove zone and below mean sea level, and monitoring these for at least 7-8 yr post spill; • evaluating the benefits and methods of physically protecting seedlings in oil-damaged exposed areas; • assessing methods to accelerate seedling growth (like upland soil and fertilizer), particularly in oil-damaged exposed areas; and • evaluating the benefits of planting, including density and species selection. It is strongly suggested that sites of long term biological evaluation and the restoration program be established as soon as possible after a spill to have the most benefit. In Panama, and most other places, restoration of mangrove forests following large oil spills had chiefly focused on replanting in deforested oil gaps (Wardrop 1987). In these instances, recovery might take at least 25-30 yr for mangroves to approach their pre-spill condition, based chiefly on plant growth estimates of Rhizophora species (e.g., Cintrón et al. 1981, Cintrón and Schaeffer-Novelli 1984; Lamparelli et al. 1991). The kinds of assistance applied in the past included removal of oil and/or replanting. However, in providing assistance we presume, suspect, or know, that natural processes, like recruitment and plant growth, are unable to repair habitat damage both in the short and longer term, or either. Unfortunately, our collective experience with these matters remains inadequate so all measures applied must be treated as experimental. Therefore, restoration programs must be subject to close scrutiny, and they must be carefully monitored to assess their success or failure. If this is not done, we run the risk of re-applying damaging techniques which might worsen already fragile conditions in oil-damaged mangroves
The productivity effects of decentralized reforms - an analysis of the Chinese industrial reforms
No full textThe empirical literature on the effects of ownership has not distinguished between the effects of ownership and the effects of control. It has also generally ignored the dynamic effects of various ownership and control rights. Using a rich set of panel data about changes in China's state-owned enterprises, the author examines the static and dynamic effects of decentralizing ownership and control rights. He finds that productivity and growth rates improved significantly when reform improved the incentives for managers and employees to learn and to work hard - for example by decentralizing the rights to control wages, make production decisions, and appoint new managers. Increasing profit-retention rates and adopting performance contracts - conventionally viewed as the most important reforms for China's state enterprises - did not improve productivity much. Overall, decentralization accounted for a least 42 percent of productivity growth in Chinese state enterprises in the 1980s. Much of that gain came from improvements in the growth rate of productivity rather than in improved levels of productivity.Labor Policies,Economic Theory&Research,Environmental Economics&Policies,Banks&Banking Reform,Public Health Promotion,Economic Theory&Research,Environmental Economics&Policies,Banks&Banking Reform,Health Monitoring&Evaluation,Municipal Financial Management
THE STATE OF THE SO RADICAL
No full textAuthor Institution: Laboratoire de Chimie Physique Mol\'{e}culaire, Universit\'{e} Libre de BruxellesThe emission spectrum of the SO radical has been reinvestigated at high resolution from a microwave discharge in using a Bruker FTS 120HR spectrograph. Since , the state has been known to undergo predissociation and to present complex rotational perturbations on the v=1,2 and 3 vibrational levels, but no satisfactory of these features, caused by a state, has been performed. A new attempt which investigated both and isotopomers has led to new information concerning the state and will be presented. FA4(4:08) and FA5(4:25) will be presented here at the request of the author who must return to Japan on E. Martin, Phys. Rev. 41, 167 (1932) D. Abadie, Ann. Phys. 5, 227 (1970)"
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