منابع مشابه
Metal Oxide Nanoparticles
This chapter covers the fundamental science, synthesis, characterization, physicochemical properties and applications of oxide nanomaterials. Explains fundamental aspects that determine the growth and behavior of these systems, briefly examines synthetic procedures using bottom-up and top-down fabrication technologies, discusses the sophisticated experimental techniques and state of the art the...
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By the 1980s, this field had matured, but a renaissance occurred with the availability of more advanced and sophisticated physical methods used to characterise such compounds. This renaissance can also be traced back to the rediscovery of colloid chemistry as well as to the realisation that metal-rich cluster complexes can be considered as a bridge between classical small metal complexes of the...
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The photochemistry of small molecules on well-defined metal surfaces has been the subject of intense research for more than three decades.1 This field is of interest because it rests on the superposition of two influences. On one hand, new reaction channels can become possible by electronic excitation, which are usually not accessible by thermal activation. On the other hand, compared to molecu...
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The catalytic activity of phosphoenolpyruvate carboxykinase in rat liver cytosol is stimulated by incubating with Fe2+, Mn2+, Co2+, and Cd2+. When purified, the enzyme no longer responds to Fe2+, Co2+, or Cd2+ but retains a response to Mn2+. Low concentrations of SO4(2-) in the incubation medium with enzyme and divalent transition metal allow stimulation by Fe2+ and Co2+ and enhance the respons...
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ژورنال
عنوان ژورنال: Science
سال: 2007
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.1133162