We experimentally and numerically investigate the exchange interaction of yellow excitons in cuprous oxide. By varying material parameters numerical calculations, we can interpret experimental findings understand their origin complex band structure central-cell corrections. In particular, observe reversal ortho- paraexciton for $2S$ exciton, explain this phenomenon by an avoided crossing with g...

BACKGROUND The detection of hydrogen peroxide (H2O2) and nitrite ion (NO2-) is of great important in various fields including clinic, food, pharmaceutical and environmental analyses. Compared with many methods that have been developed for the determination of them, the electrochemical detection method has attracted much attention. In recent years, with the development of nanotechnology, many ki...

In a recent paper, S. R. Benedict? describes a calorimetric copper method for the determination of the blood sugar which is based upon the idea that his well known copper citrate reagent should prove as superior for quantitative work on blood as it has been for qualitative tests on urine. This expectation seems to have been fulfilled to a certain extent, for by a series of paralleL blood sugar ...

In a recent paper, S. R. Benedict? describes a calorimetric copper method for the determination of the blood sugar which is based upon the idea that his well known copper citrate reagent should prove as superior for quantitative work on blood as it has been for qualitative tests on urine. This expectation seems to have been fulfilled to a certain extent, for by a series of paralleL blood sugar ...

For the determination of reducing sugars in pure solution or in biological fluids (after suitable pretreatment to remove interfering substances and supplemented where needed by the use of washed yeast), one of the most accurate and convenient methods is the use of copper reagents of the type utilizing iodometric titration of cuprous oxide (Shaffer and Hartmann (l), Somogyi (2)). The delicacy an...