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Summary BACKGROUND: No doubt, liver surgery has become safer over the past two decades. Many people jump to the conclusion that this increase in safety is due primarily to new methods of dissecting through the liver. METHODS: We did a literature search over the period 1992–2004 and then considered the data within the articles on the basis of device design and our own personal experiences. RESULTS:...
In this paper, a device using the combination of improved floating ball and photoelectric sensor to detect the liquid-liquid interface of biodiesel and raw glycerin was proposed. The device completed the detection of the main product and by-product interface in biodiesel production process and realized the continuous separation of raw glycerin from biodiesel. In the design of software, there was analysis...
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