ここから本文です
TWO:Lawrence smiled as he flicked off the end of his cigarette.

Membrane separation type solvent dehydration system

Great attention is recently being paid to global environmental issues, and it is now conceivable that companies will need to treat used solvents themselves. In consideration of this kind of social issue, we have developed a “membrane separation type solvent dehydration system,” which uses a polyimide membrane with superior dehydration properties developed by Ube Industries, Ltd. in combination with our own distillation and concentration technology that has resulted in solvents being more easily recovered.

THREE:But numerous as are the obligations, whether real or imaginary, of the Alexandrian to the Athenian teacher, they range over a comparatively limited field. What most interests a modern student in Platonismits critical preparation, its conversational dialectic, its personal episodes, its moral enthusiasm, its political superstructurehad apparently no interest for Plotinus as a writer. He goes straight to the metaphysical core of the system, and occupies himself with re-thinking it in its minutest details. Now this was just the part which had either not been286 discussed at all, or had been very insufficiently discussed by his predecessors. It would seem that the revival of Platonic studies had followed an order somewhat similar to the order in which Platos own ideas were evolved. The scepticism of the Apologia had been taken up and worked out to its last consequences by the New Academy. The theory of intuitive knowledge, the ethical antithesis between reason and passion, and the doctrine of immortality under its more popular form, had been resumed by the Greek and Roman Eclectics. Plutarch busied himself with the erotic philosophy of the Phaedrus and the Symposium, as also did his successor, Maximus Tyrius. In addition to this, he and the other Platonists of the second century paid great attention to the theology adumbrated in those dialogues, and in the earlier books of the Republic. But meanwhile Neo-Pythagoreanism had intervened to break the normal line of development, and, under its influence, Plutarch passed at once to the mathematical puzzles of the Timaeus. With Plato himself the next step had been to found a state for the application of his new principles; and such was the logic of his system, that the whole stress of adverse circumstances could not prevent the realisation of a similar scheme from being mooted in the third century; while, as we have seen, something more remotely analogous to it was at that very time being carried out by the Christian Church. Platos own disappointed hopes had found relief in the profoundest metaphysical speculations; and now the time has come when his labours in this direction were to engage the attention hitherto absorbed by the more popular or literary aspects of his teaching.The direct application of steam to forging-hammers is without doubt the greatest improvement that has ever been made in forging machinery; not only has it simplified operations that were carried on before this invention, but has added many branches, and extended the art of forging to purposes which could never have been attained except for the steam-hammer.
  • 1Under the distillation system, even in case of azeotropic solvent compositions, this system which remove water vapor by the polyimide membrane will easily dehydrate.
  • 2In comparison with the distillation system, it significantly saves on use of steam.
  • 3Dehydration can be performed through merely supplying evaporated vapor to the membrane module and maintaining the differential pressure between the permeable side and the impermeable side.
  • 4Solvent purity of 99.9% or more can be achieved by carrying out dehydration with a polyimide membrane only.
  • 5The polyimide membrane has superior heat and solvent resistance. Therefore, the vapor permeation system reduces contamination of the membrane and thus extends its life.
THREE:I see Larry! Yoo-hoo! Sandy shouted.

The aromatic polyimide membrane is highly permeable to water vapor but less permeable to vapors of organic compounds such as alcohol etc.

THREE:III.(1.) What is the difference in general between wind and water wheels?(2.) Can the course of wind, like that of water, be diverted and applied at pleasure?(3.) On what principle does wind act against the vanes of a wheel?(4.) How may an analogy between wind-power and heat be traced?
  • 1 Recovery of the detergent solvent Recovery of the cleaning solvent such as electronic parts industry, precision instrument industry.
  • 2Solvent recovery and the refinement Solvent recovery and the refinement such as chemical industry, an industry of medical supplies, food industry, the fermentation industry.
THREE:A carriage moving on angular ways always moves steadily and easily, without play in any direction until lifted from its bearing, which rarely happens, and its lifting is easily opposed by adjustable gibs. A carriage on a flat shear is apt to have play in a horizontal direction because of the freedom which must exist to secure easy movement. In the case of tracks, it may also be mentioned that the weight of a carriage acts as a constant force to hold it steady, while with a flat shear the weight of a carriage is in a sense opposed to the ways, and has no useful effect in steadying or guiding. The rigidity and steadiness of tool movement is notoriously in favour of triangular tracks, so much so that nearly all American machine tool-makers construct lathes in this manner, although it adds no inconsiderable cost in fitting."Yes, sir," I replied, "excepting my pocket-knife."

Acetone, ethanol, methyl ethyl ketone, butanol, isopropyl alcohol, ethyl acetate, methyl isobutyl ketone, others (including hexane and toluene).