but given the lure of the possibilities and the pressing nature of our energy difficulties, it's possible that helium-3 could be a significant driver of future exploration of the moon.. And it certainly could ease the pressure on the demand for fossil fuels—if and when the numerous challeng...
How long would it take a 1-kg radioactive substance with a half-life of 100 years to decay into 12.5 g? In an exponential decay problem involving? half-life, what does this term? mean? Is spontaneous fission radioactive decay? What is the equation for beta minus decay? How fast does...
Fire a neutron at uranium-235 and you turn it into uranium-236: an unstable version of the same atom (a radioactive isotope of uranium) with 92 protons and 144 neutrons (remember that you fired an extra one in). Uranium-236 is too unstable to hang around for long so it splits apart...
But helium-3 fusion produces no radioactive material. In fact, one proponent stated you could safely build a helium-3 power plant in the middle of a city. A clean, safe source of power almost sounds too good to be true, doesn't it? Well, of course, this is all very theoretical. An...
Why is radioactive decay measured in half-lives? Find the half-life of an element if the starting mass is 23056 g and the ending mass is 180 g. The time of decay took 7.01 \times 10^7 years. When an unstable isotope undergoes alpha decay, what does it give off?
We illustrate the utility of TRANSEP by applying it to two rainfall events from a 17 ha catchment at Maimai in New Zealand, where O, rainfall, and runoff data were sampled with a high temporal resolution. We explore which runoff and tracer transfer function (exponential piston flow, gamma ...
However, it should be taken into account that drug-related side effects of various neuroprotective substances, such as lubeluzole, on the cardio- vascular system cannot be monitored in such small animals. We therefore feel that in a first approach, the present model was highly appropriate for ...
While we have not measured LFAT in healthy children, it can be assumed that this would be low and similar to concentrations in healthy young adults. If this is true, measured LFAT was increased 3 to 4 fold in children at week 1 post-burn, and remained elevated regardless of fenofibrate ...
In 2015 EFSA Panel on Contaminants in the Food Chain (CONTAM) assessed the cancer risk and concluded that the margin of exposure (MOE) for the mean exposure from food was in the range of 283 to 50. This MOE was considered a concern as it is substantially less than a MOE of >10 000...
Because lots of studies of neurological diseases are done in mice and rats, many scientists are invested in the possibility that adult neurogenesis persists in the human brain, just as it does in rodents. If it doesn't, how valid is it to think that the mechanisms of learning and neuroplast...