6,315,405 research outputs found
Book Review: Urban Structure Matters
No full textJTLU, vol. 2, no. 1, (2009) pp. 81-83.The author reviews the book Urban Structure Matters by Petter Naess (Routledge, 2006).Chen, Xueming. (2009). Book Review: Urban Structure Matters. Retrieved from the University Digital Conservancy, 10.5198/jtlu.v2i1.107
Chemical reaction dynamics
No full textGuest editors Xueming Yang, David Clary and Daniel Neumark introduce the chemical reaction dynamics themed issue of Chemical Society Reviews.</p
Paleoproterozoic crustal growth in the North China Craton: evidence from the Luliang Complex
No full textAbstract not availableM. Santosh, Qiong-Yan Yang, Xueming Teng, Li Tan
Spiers Memorial Lecture: New directions in molecular scattering
No full textMolecular scattering is reviewed as it pertains to gas–gas as well as gas–surface reaction dynamics. We emphasize the collaboration of experiment and theory, from which new directions of research are being pursued on increasingly complex problems.The field of molecular scattering is reviewed as it pertains to gas–gas as well as gas–surface chemical reaction dynamics. We emphasize the importance of collaboration of experiment and theory, from which new directions of research are being pursued on increasingly complex problems. We review both experimental and theoretical advances that provide the modern toolbox available to molecular-scattering studies. We distinguish between two classes of work. The first involves simple systems and uses experiment to validate theory so that from the validated theory, one may learn far more than could ever be measured in the laboratory. The second class involves problems of great complexity that would be difficult or impossible to understand without a partnership of experiment and theory. Key topics covered in this review include crossed-beams reactive scattering and scattering at extremely low energies, where quantum effects dominate. They also include scattering from surfaces, reactive scattering and kinetics at surfaces, and scattering work done at liquid surfaces. The review closes with thoughts on future promising directions of research.Funder:
Office of Naval Research Global
https://doi.org/10.13039/10000729
PHOTODISSOCIATION OF OZONE AT 193 NM BY HIGH-RESOLUTION PHOTOFRAGMENT TRANSLATIONAL SPECTROSCOPY
No full textThe photodissociation of ozone has been studied at 193 nm using high resolution photofragment translational spectroscopy. The results show six distinct peaks in the time-of-flight spectra for the O2 product and its momentum-matched O atom counterpart. The translational energy distributions determined from the time-of-flight spectra reveal the production of a range of electronic states of the photofragments. The product electronic states were identified based on the translational energy distributions, with the aid of state-resolved imaging experiments by Houston and co-workers. The results reveal the production of a substantial yield of highly excited triplet states of O2 , recently suggested to play an important role in the stratospheric ozone balance. In addition, peaks corresponding to O2(a 1Dg) and O2(b 1Sg 1) were observed, the latter confirming a previous report @A. A. Turnipseed et al., J. Chem. Phys. 95, 3244 ~1991!#. Evidence was seen for a small contribution from the triple dissociation O3!3O(3P), and insight into the dissociation dynamics for this process was inferred from the translational energy distributions. Branching fractions and angular distributions were measured for all channels. The latter were found in general to yield negative b parameters, in contrast to what is seen at longer wavelengths
Photodissociation dynamics of CH3Cl at 157.6 nm: Evidence for CH2((X)over-tilde(3)B(1)/(a)over-tilde(1)A(1))+HCl product channels
No full textPhotodissociation of methyl chloride at 157.6 nm has been investigated using a molecular beam apparatus with a universal detector, which is based on VUV photoionization by synchrotron radiation. Three dissociation channels have been observed: Cl þ CH3, H þ CH2Cl & HCl þ CH2. Product translational energy distributions were determined for all observed dissociation channels. An intriguing HCl elimination channel was observed, which consists of two distinctive micro channels: one is CH2ð~XX3B1Þ þ HCl, the other is CH2ð~a1A1Þ þ HCl. The fraction of the available energy released as product translational energy was determined to be 0.75 for CH2ð~XX3B1Þ þ HCl & 0.38 for CH2ð~a1A1Þ þ HCl. Other product channels such as H2 þ CHCl were not found
CUHK electronic theses & dissertations collection
No full textRen Xueming."November 2001."Thesis (Ph.D.)--Chinese University of Hong Kong, 2001.Includes bibliographical references.Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.Mode of access: World Wide Web.Abstracts in English and Chinese
Scruffy the dog at the CRIO cottage, Australian National University, Canberra 2007 [picture] /cWilliam Yang.
No full textTitle devised by cataloguer based on information from inscription.; Part of the collection: Breathing the rarefied air of Canberra, 2007.; Inscriptions: "Katie and Ursula would sometimes bring Scruffy into work as he didn't like being left at home, especially during a thunder storm, He'd bolt"--In ink upper left on image. 'Scruffy. CRIO cottage. ANU. From series, 'Breathing the rarefied air of Canberra'. William Yang 2007. 1/20"--In ink on sheet below photograph.; Condition: Left edge roughly cut.; Photographer's stamp lower left.; Also available in electronic version via the Internet at: http://nla.gov.au/nla.pic-vn4398935; Purchased from Helen Maxwell Gallery, 2008.Scruff
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