摘要:
In the method for separating and purifying histidine from a culture containing the amino acid, the culture containing histidine and microbial cells is charged onto the top of a column filled with a carrier particle whose particle size is 350 μm or more and which has an ability to adsorb histidine and then an eluent is passed through the column whereby accomplishing the separation and purification of histidine, and preferably in the step mentioned above, a strong acid cation exchange resin is employed as a carrier particle whereby accomplishing the separation and purification of histidine.
摘要:
Bis(2,6-di tert butyl-4-branched propyl or butyl phenyl)-pentaerythritol spiro phosphites are provided having the formula: ##STR1## wherein R is a branched propyl or butyl group, such as isopropyl, iso-butyl, or sec-butyl, as well as synthetic resin compositions having enhanced resistance to deterioration upon exposure to the heat and light comprising such as bis(2,6-di-t-butyl-4-branched propyl or butyl phenyl)pentaerythritol spiro phosphites.
摘要:
A sheet feeding mechanism for feeding stacked sheets one by one from a sheet magazine includes a plurality of suction cups coupled to a vacuum suction device for attracting one sheet at a time, and an arm member on which the suction cups are securely mounted. At least one rotatable bearing is operatively coupled to the arm member and rollingly movable in a guide groove having at least one curved or bent guide opening. The bearing is movable by a slider in and along the guide opening to angularly move the arm member and hence the suction cups for thereby swaying and feeding a sheet held by the suction cups.
摘要:
An apparatus housing and a controller are separate from each other, and opposite sides of a second casing of the apparatus housing have respective first and second cable ports defined therein for extending a cable connected to the controller. With the cable extended through the first cable port or the second cable port, the layout of the apparatus housing and the controller can easily be changed. Therefore, the apparatus housing and the controller can be installed in any of various layout patterns.