Review the x-ray technique in the ” In-situ X-ray Absorption Spectroscopy of Supported Ru Catalysts in the aqueous phases’ Many of the techniques used to characterize catalysts in the presence of vapor-phase molecules are not appropriate for liquid water. Because X-ray absorption spectroscopy and H2 chemisorption are specific probes of the active transition metal, we…
DetailsIn recent years there is an increasing interest in developing new approaches to improve the efficiency of photovoltaic cells (solar cells). Silicon is the most widely used material for solar cells and is due to its abundance in nature, stability, non-toxicity and well established refining and processing technologies [1]. Even though commercial single crystalline silicon solar…
DetailsNematic liquid crystalline polymers (LCP’s) are interesting anisotropic fluids, which may have some orientational order at rest (molecules tend to align in the same direction). Those polymers may be useful to obtain oriented materials with excellent mechanical, electrical and thermal properties. Its rheological, mechanical and optical properties may be changed by the particle inclusion, depending…
DetailsFor those who are always looking for new educational tools and to stay up to date, recently I though of sharing with all of you that these days I have learned lots of new things. How was this? I registered in many FREE webinars. What is a webinar??? Webinar is short for Web-based seminar. Is…
DetailsThe new information delivery service, ACS Mobile, provides readers with an up-to-the-minute live stream of peer-reviewed research content published across the Society’s preeminent portfolio of scholarly research journals, and is augmented by “Latest News†fromChemical and Engineering News (C&EN) –– the Society’s industry-leading magazine and preferred source of online news for its more than 161,000…
DetailsThere is a great amount of genetic information in the environment. To explore that genetic information can mean the discovery of new drugs like antibiotics; new enzymes for the production of biodegradable fuels, for the enhancement of industrial processes or for the bioremediation of contaminated sites. Direct and indirect approaches have been used to search…
DetailsAcademic Tenure and Women…… Are we there yet!!! By Darlene I. Santiago Quinones Did you know that 4 out of the 8 prestigious Ivy League Universities in United States are led by Women?????? You might think that finally we have reached equality, well you are incorrect. Do not get me wrong, this is historically and…
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A catalyst is a substance which increases the rate of reaction without being consumed appreciably during a reaction process. This write up is focused on Heterogeneous catalysts, which promote the conversion of the reactants, and that are on a different phase than reactants and products. Normally, heterogeneous catalysts are found in solid phase or they…
DetailsMany fellowships and sometimes the graduate assistant-ship give you the opportunity to present your research in National and International Conference. Sometimes you don’t know how to find a conference that meets the expectations of your research. It can be hard to find, so allow plenty of time! To help you overcome any difficulties in locating…
DetailsParallel programming began about 30 years ago with the development of mul- tiprocessor computers. Generally, multiprocessor computers have different archi- tectures in terms of the assembly of the processors with their memory. A computer with a shared-memory architecture has multiple processors sharing the same mem- ory modules such that, the processors share the same workspace…
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