Recent Progress

Discussion Points DPI What are the main concerns with homogeneous metathesis catalysts that currently prevent their application in large scale processes What are the current issues regarding the heterogeneous catalysts How would you tackle these issues  

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Saldin D K, Chen X, Vam vakas J A, Ott M, Wedler H, Reuter K, Heinz K and De Andres P L 1997 Holographic LEED a review of recent progress Surf. Rev. Lett A 991-1001... 

Computational solid-state physics and chemistry are vibrant areas of research. The all-electron methods for high-accuracy electronic stnicture calculations mentioned in section B3.2.3.2 are in active development, and with PAW, an efficient new all-electron method has recently been introduced. Ever more powerfiil computers enable more detailed predictions on systems of increasing size. At the same time, new, more complex materials require methods that are able to describe their large unit cells and diverse atomic make-up. Here, the new orbital-free DFT method may lead the way. More powerful teclmiques are also necessary for the accurate treatment of surfaces and their interaction with atoms and, possibly complex, molecules. Combined with recent progress in embedding theory, these developments make possible increasingly sophisticated predictions of the quantum structural properties of solids and solid surfaces. 

Yoshida, H. Recent Progress in the Theory and Application of Symplectic Integrators. Celestial Mechanics and Dynamical Astronomy 56 (1993) 27-43 Trobec, R., Merzel, F., Janezic, D. On the Complexity of Parallel Symplectic Molecular Dynamics Algorithms. J. Chem. Inf. Comput. Sci. 37 (1997) 1055-1062... 

Electronic Density Eunctional Theory Recent Progress and New Directions J. F. Dobson, G. Vignale, M. P. Das, Eds., Plenum, New York (1998). 

Recent progress in this field has been made in predicting individual atoms contribution to optical activity. This is done using a wave-functioning, partitioning technique roughly analogous to Mulliken population analysis. 

Apphcations of ultrasound to electrochemistry have also seen substantial recent progress. Beneficial effects of ultrasound on electroplating and on organic synthetic apphcations of organic electrochemistry (71) have been known for quite some time. More recent studies have focused on the underlying physical theory of enhanced mass transport near electrode surfaces (72,73). Another important appHcation for sonoelectrochemistry has been developed by J. Reisse and co-workers for the electroreductive synthesis of submicrometer powders of transition metals (74). 

Y. Sajima, K. Sato, and H. Ukihashi, Recent Progress of Asahi Glass Membrane Chlor—Alkali Process, AICHE Symp. Ser. 82(248), 108 (1985). 

S. Yoshida and L. Share, eds.. Recent Progress in Posterior Pituitay Hormones, Elsevier Amsterdam, the Netherlands, 1988. 

T. Blizzard, M. H. Eisher, H. Mrozik, and T. L. Sbib, iu G. Lukacs and M. Ohno, eds.. Recent Progress in the Chemical Synthesis of Antibiotics., Spriuger-Vedag, Berlin, Heidelberg, Germany, 1990. 

W. Bradley, Recent Progress in the Chemistry of Dyes and Pigments, The Royal Institute of Chemistry, London, 1958. 

T. S. Gore and co-workers. Recent Progress in the Chemistry of Natural and Synthetic ColoringMatters and Related Fields, Academic Press, Inc., New York, 1962. 

States have made substantial recent progress in the adoption, and EPA approval, of toxic pollutant water-quahty standards. Furthermore, virtually all states have at least proposed new toxics criteria for priority toxic pollutants since Section 303 (c) (2) (B) was added to the CWA in February of 1987. Unfortunately, not all such state proposals address, in a comprehensive manner, the requirements or Section 303 (c) (2) (B). For example, some states have proposed to adopt criteria to protect aquatic hfe, but not human health other states have proposed human health criteria that do not address major exposure pathways (such as the combination of both fish consumption and drinking water). In addition, in some cases final adoption or proposed state toxics criteria that would be approved by EPA has been substantially delayed due to controversial and difficult issues associated with the toxic pollutant criteria adoption process. 

Volume 98 Zeolite Science 1994 Recent Progress and Discussions. Supplementary Materials to the 10th International Zeolite Conference, Garmisch-Partenkirchen, Germany, July 17-22,1994... 

As reviewed so far, the contact-mechanics-based techniques (JKR and SFA methods) have been effective in the understanding molecular level mechanisms related to the adhesion of elastomers and in measuring the surface and interfacial energies of polymers and self-assembled monolayers. The current work in this area is aimed at understanding contact induced interfacial rearrangements and the role of specific interactions. The recent progress of these studies is discussed in this section. 

Kletz, T. A. (1991). "Inherently Safer Plants—Recent Progress. IChemE Symposium Series No. 124, 225-33. 

Complementing these very well established approaches for the study of any scientific field, namely experiments and analytical theory, very recently, computer simulations have become a powerful tool for the study of a great variety of processes occurring in nature in general [4-6], as well as surface chemical reactions in particular [7]. Within this context, the aim of this chapter is not only to offer a critical overview of recent progress in the area of computer simulations of surface reaction processes, but also to provide an outlook of promising trends in most of the treated topics. 

Recent Progress in Perfluoroalkylation by Radical Species with Special Reference to the Use of Bis(perfluoroalkanoyl)peroxides Yoshida, M, Kamigata, N J Fluorine Chem 49, 1-20 62 an c -I d... 

Recent progress in the investigation of the tautomerism of organic compounds... 

Recent progress in the synthesis and reactions of isothiochromans 980PP243. 

Professor D Auria (Basilicata University) summarizes the photochemical isomerization of pentaatomic heterocycles, providing a unified description in terms of the five conceivable mechanisms. R. Alan Aitken and Andrew W. Thomas of the University of St. Andrews, Scotland, summarize the substantial recent progress in heterocyclic acyl and formyl anion equivalents. 

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