Flame atomic absorption spectrometry (FAAS) is largely used for the determination of metals, showing good selectivity but low detectability, which may be improved by a preconcentration step. 4 Several ...

An international law expert says US strikes on Iran were illegal. Here’s why - ANALYSIS: Donald Rothwell says, under the UN ...

We investigate the structural phase transition and optical properties of RbSnX3 (X = Cl, Br, I) at pressures of 0 and 160 GPa by means of the first-principles theory. Our calculated results indicate ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics ...

With higher efficiency and lower costs, perovskite–silicon tandem cells mark a breakthrough in solar tech. Can they truly ...

For a lizard to survive in a dark, smoky environment with a scarcity of food, as was Earth between around 250 million and 200 million years ago—a period marked by two mass extinction events—a good ear ...

In 2014, the IOC published a consensus statement entitled ‘Beyond the Female Athlete Triad: Relative Energy Deficiency in Sport (RED-S)’. The syndrome of RED-S refers to ‘impaired physiological ...