A5000602877- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astronomical Observations and Instrumentation
- Astrophysics and Star Formation Studies
- Gender, Labor, and Family Dynamics
- Organometallic Complex Synthesis and Catalysis
- Adaptive optics and wavefront sensing
- History and Developments in Astronomy
- Asymmetric Hydrogenation and Catalysis
- Social Policy and Reform Studies
- Intergenerational Family Dynamics and Caregiving
- Carbon dioxide utilization in catalysis
- Work-Family Balance Challenges
- Gender Roles and Identity Studies
- Galaxies: Formation, Evolution, Phenomena
- X-ray Diffraction in Crystallography
- Psychotherapy Techniques and Applications
- Crystallization and Solubility Studies
- Historical Gender and Feminism Studies
- Solar and Space Plasma Dynamics
- Gender Politics and Representation
- Labor Movements and Unions
- Political Economy and Marxism
- Youth Education and Societal Dynamics
- Gamma-ray bursts and supernovae
Dominion University College
2024
Old Dominion University
2024
University of Edinburgh
2001-2022
University of Helsinki
2022
University of Bergen
2022
The Open University
2022
Lund University
2022
Università degli Studi del Piemonte Orientale “Amedeo Avogadro”
2022
Mykolas Romeris University
2022
Newcastle University
2022
In this, the first in a series of three papers concerning SuperCOSMOS Sky Survey (SSS), we give an introduction and user guide to survey programme. We briefly describe other wide-field surveys compare them with our own. examples data, make comparison accuracies various image parameters available those from providing similar data; show that SSS data base interface offer advantages over these surveys. Some science applications are also described some limitations discussed. The constitutes...
Linear alpha-olefins, such as 1-hexene and 1-octene, are important comonomers in the production of linear low-density polyethylene (LLDPE). The conventional method producing 1-octene is by oligomerization ethylene, which yields a wide spectrum alpha-olefins (LAOs). While there exists several processes for via ethylene trimerization, similar route selective has so far been elusive. We now, first time, report an unprecedented tetramerization reaction that produces selectivities exceeding 70%,...
The UK Schmidt Telescope (UKST) of the Anglo-Australian Observatory completed a narrow-band Hα plus [N ii] 6548, 6584-Å survey Southern Galactic Plane and Magellanic Clouds in late 2003. survey, which was last UKST wide-field photographic only one undertaken narrow-band, is now an online digital data product Wide-Field Astronomy Unit Royal Edinburgh (ROE). utilized high specification, monolithic interference bandpass filter exceptional quality. In conjunction with fine-grained Tech-Pan film...
Cr(III) complexes of tridentate SNS ligands have been prepared and evaluated as catalysts for ethylene trimerization, with several giving very high activity excellent selectivity toward 1-hexene when activated methylaluminoxane. The new illustrate the potential sulfur-based on early transition metals catalysis.
We present the Macquarie/AAO/Strasbourg Hα Planetary Nebula Catalogue (MASH) of over 900 true, likely and possible new Galactic planetary nebulae (PNe) discovered from AAO/UKST survey southern plane. The combination depth, resolution, uniformity areal coverage has opened up a hitherto unexplored region parameter space permitting detection this significant PN sample. Away bulge PNe are typically more evolved, larger angular extent, lower surface brightness obscured (i.e. extinguished) than...
The unprecedented selective tetramerisation of ethylene to 1-octene was recently reported. In the present study various mechanistic aspects this novel transformation were investigated. unusually high selectivity in chromium-catalyzed reactions is caused by unique extended metallacyclic mechanism operation. Both and higher 1-alkenes are formed further insertion into a metallacycloheptane intermediate, whereas 1-hexene elimination from species as other reported trimerisation reactions. This...
Methylaluminoxane (MAO)-activated chromium(III) complexes of tridentate PNP and SNS ligands the form (R2PCH2CH2)2NR‘ (R = alkyl, aryl; R‘ H, Me, benzyl) (RSCH2CH2)2NH alkyl) have been prepared tested for trimerization ethylene to 1-hexene. The effect P or S donor substitution, nitrogen chelate ring size has examined. Sterically compact basic groups lead highest activities selectivities, while a secondary amine central is crucial high activity, raising possibility that deprotonation this...
In situ prepared chromium catalysts containing bulky diphosphinoamine (PNP) ligands, upon activation with MAO, are extremely efficient for the trimerisation of ethylene to 1-hexene.
Chromium-based catalyst systems with polar-substituted diphosphinoamine ligands are selective for either trimerisation or tetramerisation of ethylene, depending on the position polar groups aryl rings.
The spontaneous production and release of morphologically typical, 85 to 90 nm diameter C-type retrovirus particles from four cell lines derived three species warmwater fish have been identified. Virus pellets culture supernatants showed high levels Mn2+-dependent reverse transcriptase activity at 24 °C. Peak enzyme was associated with a 1.16 g/ml sucrose gradient fraction. All isolates induced cytolytic infection bluegill fry line within 6 10 days.
A systematic investigation of interstellar extinction in the ultraviolet as a function position Large Magellanic Cloud has been made from an enlarged sample reddened and comparison stars distributed throughout cloud. Except for one star SK-69-108, most our sample, shape curves LMC do not show significant variations. All increase towards 2200 Å, but some have maxima near 1900 Å. It shown that feature curve Å is caused by mismatch stellar F III 1920 feature. The strength this luminosity...
This article considers the origins and some of key features 'family practices' approach. approach emphasises activities, routine everyday fluid nature concept. fluidity. is presented through exploring issues space time in relation to family life. discussion highlights affinities between this work feminist geographers argues for more exchanges 'practices' a wide range social science disciplines.