نتایج جستجو برای: multispectroscopic methods
تعداد نتایج: 1874385 فیلتر نتایج به سال:
Determination of the ligand coordination number and symmetry of a transition metal ion is important to understand reaction mechanisms in inorganic chemistry. The problem can be addressed through diffraction techniques or by spectroscopy. Here we limit ourselves to the latter and note that, historically, the problem has been studied with UV/Vis, or optical absorption or electronic spectroscopy. ...
...................................................................................................................................i Acknowledgments ..................................................................................................................iii List of Figures .....................................................................................................................
Substantial increases in retail concentration (particularly in Europe) raise concerns about the welfare implications for consumers. In a formal model, we argue that retailer market power reduces upstream firms incentives to introduce new products. On the basis of a survey of firms in German food manufacturing, the results of a negative binomial regression model supports the proposition of a det...
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In a Perspective, Jane Norman and Phillip Bennett argue that it is time to explore alternatives to progesterone for preventing preterm birth.
Analysis of data from the 2006-2008 National Survey of Family Growth indicates that use of emergency contraception in the United States has increased after changes in its prescription status in 2006. However, clinicians continue to play a pivotal role in ensuring that women have accurate information about emergency contraception.
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