Recently, a research team in Tasmania, Australia, said they developed the world's first engine fueled by a mixture of diesel and hydrogen, which is more environmentally friendly and energy efficient than conventional engines.
The research team said that the new engine will not release harmful particles and pollute the air during use. At the same time, using a mixture of diesel and hydrogen as fuel, it can also increase energy output, reduce diesel waste, and contribute to energy conservation.
The most fascinating thing is that this technology can be easily modified to work on trucks, small cars and ships.
Currently, this technology is still in the experimental stage.
At present, in the process of isolation and preparation of various stem cells from various tissue sources, Centrifuge Tubes with a volume of 15ml and 50ml are used.
It is one of the low-value consumables with high usage rate. It is generally installed on a dry foam rack with the package or in bulk. When used, it is taken out by the operator and placed on the plastic centrifuge tube rack in the ultra-clean workbench. The common centrifuge tube rack can only make the centrifuge tube stand upright. When transferring liquid or needing centrifugation, the operator should hold the centrifuge tube in the left and the night gun or aspirator in the right. If it is necessary to transfer a large amount of liquid reagents or perform gradient centrifugation operations, such as density gradient centrifugation to separate mononuclear cells, the operator needs to hold the centrifuge tube with the right hand for a long time and tilt the centrifuge tube, which often causes the operator's wrist joint pain. At the same time, it will also affect the liquid superposition effect, which will easily lead to the mixing of liquids of different densities, resulting in the failure of the experiment.
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