Over the last few decades measurement of the metabolic rates of farm animals has been made using large, static respiration chambers (e. 1940; W o l f f , 1958). The reasons for this divergence of apparatus lie mainly in the different questions which animal and human physiologists and nutritionists have been seeking to answer, and to a lesser degree in the constraints imposed by the behavioural ...

Malachite green (MG) is a triphenylmethane cationic dye used in aquaculture practice, although it has been banned several countries. The illegal use by fish producers, however, persists due to its effectiveness, and ready cheap supply. To prevent indiscriminate applications, strict control measures with simple analytical approaches are therefore necessary. With this purpose, novel, method apply...

The carbon quantum dot (CQD) paper-based analytical device (PAD) has drawn great attention and is being intensively explored. However, the construction of a continuous flow CQD synthesis remains challenging. In this work, reaction apparatus was constructed to synthesize nitrogen-doped CQDs using mixed-solvent system tetraethylene glycol water. optical properties were characterized. found be que...