656 research outputs found
Pearl Ogden
No full textPearl is a Northern Territory researcher, historian and author who has lived in the Territory on and off since her childhood. Pearl was a foundation member of the Historical Society of Katherine, a member of the Heritage Advisory Council of the Northern Territory and the National Trust (NT). On 1 January 2001, she was awarded the Centenary Medal for her service as a researcher and writer of regional history. Pearl served on the Place Names Committee from 2001 to 2008. She has delivered speeches, written historical articles, reports and books about the Northern Territory. Since 1983 Pearl has written fourteen publications which include: 'Leg's more sweet than tail: a story of the Fogarty family in the Katherine District from approximately 1921-1951'; 'Bradshaw via Coolibah: the history of Bradshaw's Run and Coolibah Station'; 'Women of the Kath-rine'; and 'From humpy to homestead: the biography of Sabu' followed by the abridged biography of Sabu in 2010. She is passionate about the Territory and her community, involving herself with various political positions and community issues. She provides guided historical tours of Darwin city and Parliament House, which she delivers with her quick wit and good humour. On 9 June 2008, Tom Pauling, the Administrator of the Northern Territory, presented Pearl with the Medal of the Order of Australia (OAM) for her service to the community in the Northern Territory, particularly as an historian and author, and through heritage conservation roles. Pearl's manuscript and photographic collections are held at the Northern Territory Library.ResearcherHistoria
New South Asian Security Six Core Relations Underpinning Regional Security
No full textNew South Asian Security: Six Core Relations Underpinning Regional Security is an edited volume on South Asian security by Chris Ogden. Six chapters are written by eminent scholars with an introduction by the editor. They include discussion of different aspects of bilateral relations of the South Asian states. Separate chapters cover the bilateral relations between China-India, Pakistan-Afghanistan, India-Pakistan, China-Afghanistan, China-Pakistan and India-Afghanistan. The book’s introduction explains the its approach to understanding South Asian security problems. Chris Ogden takes a new approach to understand the security dynamics and challenges in South Asia. It pursues the constructivists ideas of identity and norms and eschews comparison with liberal ideas of economic cooperation, multilateralism and to some extent the realist ideas of treating ‘states as identical black boxes’. Instead of discussing specific issues, such as nuclear deterrence, security, terrorism and external perspectives on these issues, the author takes the region as ‘co-dependent entity.’ Relations between the regional powers China, Pakistan, India and Afghanistan are discussed as factors that impact the regional security. These four countries are further placed on the rise and fall spectrum i.e. China and India are dubbed as rising powers and Pakistan and Afghanistan as failing states. It tries to show through a state focused and state driven approaches, that ‘security in South Asia is highly inter-connected and co-dependent in terms of provenance and orientation’ and focuses on interaction among these four states through the interplay of norms under political, physical and security dimensions
Letter from Laura I. Ogden to John Muir, 1905 Jan 8.
No full textsection is March the twenty-first, from three until five P.M. We will defer the further arrangement of our Program until we receive your reply - We venture to hope it may be a favorable one. May I assure your that the study of your books in our section has been most delightful and profitable, and our wish to meet and listen to their author very sincere - Yours very respectfully,Laura I. Ogden(Mrs F.B.)Jan\u27y 8 - 1905https://scholarlycommons.pacific.edu/jmcl/28681/thumbnail.jp
Unexpected structural diversity in alkali metal azide-crown ether complexes: syntheses, X-ray structures, and quantum-chemical calculations
No full textA series of alkali metal azide-crown ether complexes, [Li([12]crown-4)(N-3)], [Na([15]crown-5)(N-3)], [Na([15]crown-5)(H2O)(2)]N-3, [K([18]crown-6)(N-3)(H2O)], [Rb([18]crown-6)(N-3)(H2O)], [Cs([18]crown-6)(N-3)](2), and [Cs([18]crown-6)(N-3)(H2O)(MeOH)], has been synthesised. In most cases, single crystals were obtained, which allowed X-ray crystal structures to be derived. The structures obtained have been compared with molecular structures computed by density functional theory (DFT) calculations. This has allowed the effects of the crystal lattice on the structures to be investigated. Also, a study of the M-N-terminal metalazide bond length and charge densities on the metal (M) and terminal nitrogen centre (N-terminal) in these complexes has allowed the nature of the metal-azide bond to be probed in each case. The bonding in these complexes is believed to be predominantly ionic or ion-dipole in character, with the differences in geometries reflecting the balance between maximising the coordination number of the metal centre and minimising ligand-ligand repulsions. The structures of the crown ether complexes determined in this work show the subtle interplay of such factors. The significant role of hydrogen bonding is also demonstrated, most clearly in the structures of the K and Rb dimers, but also in the chain structure of the hydrated Cs complex
Matrix isolation studies on the co-condensation reactions of molecular SiO and GeO: the characterisation of the novel cyclic species SiGeO2, Si2GeO3 and SiGe2O3
No full textSynthesis, structures and DFT calculations on alkaline-earth metal azide-crown ether complexes
No full textThe first examples of azide complexes of calcium, strontium or barium with crown ethers have been prepared and fully characterised, notably [Ba([18]crown-6)(N3)2(MeOH)], [Sr([15]crown-5)(N3)2(H2O)], [Ca([15]crown-5)(N3)2(H2O)] and [Sr([15]crown-5)(N3)(NO3)]. Crystal structures reveal the presence of a variety of coordination modes for the azide groups including 1-, -1,3- and linkages via H-bonded water molecules, in addition to azide ions. The [Ba([18]crown-6)(N3)2(MeOH)]1/3 MeOH contains dinuclear cations with three -1,3-NNN bridges, the first example of this type in main group chemistry. The structures obtained have been compared with molecular structures computed by density functional theory (DFT). This has allowed the effects of the crystal lattice to be investigated. A study of the MNterminal metal-azide bond length and charge densities on the metal (M) and terminal nitrogen centre (Nterminal) in these complexes has allowed the nature of the metal-azide bond to be investigated in each case. As in our earlier work on alkali metal azide-crown ether complexes, the bonding in the alkaline-earth complexes is believed to be predominantly ionic or ion-dipole in character, with the differences in geometries reflecting the balance between maximising the coordination number of the metal centre, and minimising ligand-ligand repulsions
The characterisation of molecular alkali-metal azides
No full textMatrix isolation infrared (IR) studies have been carried out on the vaporisation of the alkali-metal azides MN3 (M = Na, K, Rb and Cs). The results show that under high vacuum conditions, molecular KN3, RbN3 and CsN3 are present as stable high-temperature vapour species, together with variable amounts of nitrogen gas and the corresponding metal atoms. The characterisation of these molecular azides is supported by ab initio molecular orbital calculations and density functional theory (DFT) calculations, and for CsN3 in particular, by the detection of the isotopomers CS((NNN)-N-14-N-15-N-14) and Cs((NNN)-N-15-N-14-N-14). The IR spectra are assigned to a "side-on" (C-2v) structure by comparison with the spectral features predicted both by vibrational analysis and calculation. The most intense IR features for KN3, RbN3 and CsN3 isolated in nitrogen matrices lie at 2005, 2004.4 and 2002.2cm(-1), respectively, and correspond to the N-3 asymmetric stretch. The N-3 bending mode in CsN3 is identified at 629 cm(-1). An additional feature routinely observed in these experiments occurred at approximately 2323 cm(-1) and is assigned to molecular N-2, perturbed by the close proximity of an alkali-metal atom. The position of this band appeared to show very little cation dependence, but its intensity correlated with the extent of sample thermal decomposition
Choose Life Schools Evaluation Project - Preliminary Report
No full textA Qualitative Evaluation of the Impact Choose Life Project Event On Pupils aged 12-14 years in schools In Wales and England
See related URLs for related Choose Life report
Ogden Nash signs copy of his book
No full text''Mrs. Winchester Kelso, left, has her copy of Ogden Nash's verse autographed by the author at Town Hall Wednesday morning. Mrs. Charles George, Miss Eleanor Russell and Mrs. Robert Carnahan, left to right, look on. Nash was well received by local audience.'
Researchers inside the Hydrolab, St. Croix, B
No full textScientific researchers eating, resting, relaxing, and reading books inside the Hydrolab, an underwater laboratory located on the seafloor which allowed scientists to live and work underwater for extended periods of time. Pictured are, counterclockwise from top left, Dr. John C. Ogden of West Indies Laboratory, Dr. Phillip Lobel of Harvard University, Dr. Clarendon Bowman of the University of Miami Medical School, and Nancy Ogden of West Indies Laboratory. At the top left of the photograph, Dr. John C. Ogden can be seen reading a copy of The Origin , a biographical novel about the life of Charles Darwin, written by author Irving Stone. At the time of the photograph, Hydrolab was located at a depth of approximately 50 feet in Salt River submarine canyon, St. Croix, U.S. Virgin Islands.https://digitalcommons.usf.edu/ogden7_images/1048/thumbnail.jp
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