American Association for Advancement

Fig. 7.4. Conformations of (a) free valinomycin and (b) of its potassium complex. The carbonyl oxygen atoms, P, P, M and M are in especially exposed positions, so that they can initiate complexation of potassium ion. During complexation, hydrogen bonds 1 and 2 are broken, so that oxygen atoms R and R can take part in the co-ordination of the cation. Further smaller conformation changes allow oxygen atoms Q and Q to partake in formation of new hydrogen bonds, the molecule thus attaining the final round shape (see [44a ]). (By permission of the American Association for Advancement of Science.)...

Bingham was a Member of the American Chemical Society, the American Association for Advancement of Science AAAS, and a Honorary Member of the Virginia Chemists Club. 

American Association for Advancement of Science, Washington, District of Columbia Woods Hole Research Center, Falmouth, Massachusetts Program on Science, Technology, and Public Policy, Belfer Center for Science and International Affairs, John F. Kennedy School of Government, Harvard University, Cambridge, Massachusetts and Lawrence Livermore National Laboratory, Livermore, California, USA... 

Chapter 50 - Science and Technology for Sustainable Well-Being previously appeared as an editorial titled Sustainable Well-Being in Science, Vol. 315, No. 5814, p.913, on February 16,2007, published by the American Association for Advancement of Science. The chapter is presented here with some modifications and kind permission from both the author and publisher, and is gratefully acknowledged. 

Layers, American Association for the Advancement of Science, Washington, DC, 1954, p. 161. 

Figure Cl.5.2. Fluorescence excitation spectra (cps = counts per second) of pentacene in /i-teriDhenyl at 1.5 K. (A) Broad scan of the inhomogeneously broadened electronic origin. The spikes are repeatable features each due to a different single molecule. The laser detuning is relative to the line centre at 592.321 nm. (B) Expansion of a 2 GHz region of this scan showing several single molecules. (C) Low-power scan of a single molecule at 592.407 nm showing the lifetime-limited width of 7.8 MHz and a Lorentzian fit. Reprinted with pennission from Moemer [198]. Copyright 1994 American Association for the Advancement of Science.

Figure C 1.5.7. Surface-eiilianced Raman spectra of a single rhodamine 6G particle on silver recorded at 1 s intervals. Over 300 spectra were recorded from this particle before tlie signals disappeared. The nine spectra displayed here were chosen to highlight several as yet unexplained sudden changes in botli frequency and intensity. Reprinted witli pennission from Nie and Emory [ ]. Copyright 1997 American Association for tlie Advancement of Science.

E. J. Largent, "MetaboHsm of Inorganic Fluoride" ia Fluoridation as a Public Health Measure, American Association for the Advancement of Science, Washiagton, D.C., 1954, pp. 49—78. 

William Eykamp, Ph.D., Adjunct Professor of Chemical Engineering, Tufts University Formerly President, Koch Membrane Systems Member, American Institute of Chemical Engineers, American Chemical Society, American Association for the Advancement of Science, North American Membrane Society, European Society of Membrane Science and Technology (Section 22, Alternative Separation Processes)... 

Hirsi, E. (1978). Transponation Energy Conservation Policies. In Energy II Use Uonservntion nnd Supply, eds. P. H. Abelson and A. L. Haiiiinoiid. Washington, DC American Association for the Advancement of Science. 

Figure 3. PEO,LiCF,SO, crystal structure viewed along the c axis. CF,SO, groups are shared. Coordination around one Li+ ion is shown by broken lines. Reprinted with permission from P. Lightfoot, M. A. Meltha and P. G. Bruce, Science 1993, 262, 883. Copyright 1993 American Association for the Advancement of Science.

Figure 1.72 The structure of (C60)OsO4(Bu py)2. (Reprinted with permission from Science, 1991, 252, 312.) Copyright (1991) American Association for the Advancement of Science.)...

Sillen, L. G. (1961). The physical chemistry of seawater. In "Oceanography" (M. Sears, ed.). International Oceanographic Congress (New York, 1959), pp. 549-581. Publication 67, American Association for the Advancement of Science, Washington DC. 

As a result of science education research, a new era of reform in science education has started with the new centuiy. New standards have been fixed (National Research Council, 1996, 2000). The National Science Education Standards (National Research Council, 1996) and also the 2061 project of ihe American Association for the Advancement of Science (1989,1990) assume that inquiry in general and inquiry in the context of practical work in science education is central to the achievement of scientific literacy (Hofstein Mamlok-Naaman, 2007). 

Practical activities should embody as best as possible the scientifie proeesses that have been preseribed by the American Association for the Advancement of Science observation, elassification, numerieal relations, measurements, time-spaee relations, eommunieation (oral, pictorial, written), deriving of conclusions, prediction ( what would happen if. .hypothesis making, production of operational definitions, identifieation and control of variables, experiment and explanation of experimental data. Different theoretical perspectives should be used with the aim to optimize the positive eognitive and affeetive outcomes. The use, sometimes together, sometimes separately, of different perspeetives can act complimentarily and can lead to positive results (Niaz, 1993 Tsaparhs, 1997). 

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