It is commonly observed that in spite of repeated cycles of applying zero- and firstorder phase corrections to absorption-mode carbon-13 FT NMR spectra, the spectra still possess what appears to be a residual d
The energy sources popularly known as ‘renewables’ (such as wind and solar), will be hard pressed to supply the needed quantities of energy sustainably, economically and reliably. They are inherently intermittent, depending on backup power or on energy storage if they are to be used for deliv...
Why are neutrons so damaging to tissue? 90Sr and 137Cs, which are both radioactive, are hazardous to human health. Why are these isotopes particularly concerning? Describe the structure of an atom. What determines the atomic number and the mass number? Explain th...
They're the most consequential technologies being developed today, and we literally can't say basic things about them. We can't say how much energy they use, how much carbon they produce, we can't even say where the data centers are that are being built half the time. We can't say ...
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Fluorogistx and Intech Services share a similar long-term legacy of serving North American customers on behalf of Chemours™. Combining the two entities will create an even stronger market presence and further our ability to meet the needs of our customers in the future. We are in the proc...
3.1. The "Secret Research Reports" of the German Uranium Project The activities of the "Uranium Club"—as the group of less than 100 scientists was nick-named—are well documented. In 1944 and 1945, the special "ALSOS" unit of the US army seized German nuclear laboratories with the ...
In the 1990s, the stable isotopes carbon-13 (13C) and nitrogen-15 (15N) were used by scientists to study the diet, trophic level and food chain structure of animals. In the early 21st century, the stable isotope hydrogen-2 (2H or D) played a pivotal role in tracing animal food inform...
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blacki based on the ratio of carbon isotopes in its tooth enamel. The team also analyzed the dietary signature of the other large mammals found at the Thailand site, as well as the diets of existing large mammals. Doomed to extinction It turned out that G. blacki ate, and presumably ...