I've been an avid aquarist for more than a decade, but after my last cross-country move I haven't gotten around to establishing a new tank for a few years. Looking at what's going on in the aquarium hobby these days, I've been blown away by the tech on offer. When I'm ready...
Fish fed the optimal dietary protein showed the highest crude protein calcium, phosphorous and lowest crude lipid contents of the whole body in fish. Additionally, plasma ammonia content (PAC), and activities of GOT and GPT were enhanced by dietary protein levels ( p .05). The digestive ...
we monitored the uptake of ions by duckweed,lemnoideae lemna, in an aquarium over a period of three weeks. The graphene ISFET array performance is suitable for applications
The fish were maintained at 28 ± 1 ◦C, pH 7.0–7.6, hardness 57 ± 17 mg/L (as CaCO3), dissolved oxygen 7.1–8.5 mg/L, and levels of ammonia and nitrite less than 0.001 mg/L with a 14:10 h (light: dark) photoperiod. The fish were fed twice daily ad libitum with live ...
The water temperature was (26 ± 2) °C, the dissolved oxygen was > 5 mg L−1, the pH was 7.5 ± 0.1, and the ammonia nitrogen mass concentration was < 0.05 mg L−1. 2.3. Sampling procedure At the end of the feeding trial, the fish were starved for 24 h, and all the ...
and interviews. It was found that the project’s focus on the need to provide potable water in the developing world provided authenticity and meaningfulness to the HS students, which encouraged their participation in activities and the learning of science and engineering practices. The HS students ...
Analyses of phosphate phosphorous (P−PO3−4P−PO43−), dissolved silicate (Si), nitrate (N−NO−3N−NO3−), nitrite (N−NO−2N−NO2−), and ammonia (N−NH−4N−NH4−) nitrogen were carried out with a segmented continuous-flow TechNicon II autoanalyzer or with...