ここから本文です
TWO:The sedate head of the firm in personal attendance smiled. The lovers were not sorry to be rid of him when he was called away for a moment. An official-looking person was standing by the desk with a package in his hand.

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:Another wide-spread superstition was the belief in prophetic or premonitory dreams. This was shared by some even among those who rejected supernatural religion,a phenomenon not unparalleled at the present day. Thus the228 elder Pliny tells us how a soldier of the Praetorian Guard in Rome was cured of hydrophobia by a remedy revealed in a dream to his mother in Spain, and communicated by her to him. The letter describing it was written without any knowledge of his mishap, and arrived just in time to save his life.348 And Pliny was himself induced by a dream to undertake the history of the Roman campaigns in Germany.349 Religious believers naturally put at least equal confidence in what they imagined to be revelations of the divine will. Galen, the great physician, often allowed himself to be guided by dreams in the treatment of his patients, and had every reason to congratulate himself on the result. The younger Pliny, Suetonius, Dion Cassius, and the emperors Augustus and Marcus Aurelius, were all influenced in a similar manner; and among these Dion, who stands last in point of time, shows by his repeated allusions to the subject that superstition, so far from diminishing, was continually on the increase.350In modern parlance, the word scepticism is often used to denote absolute unbelief. This, however, is a misapplication;124 and, properly speaking, it should be reserved, as it was by the Greeks, for those cases in which belief is simply withheld, or in which, as its etymology implies, the mental state connoted is a desire to consider of the matter before coming to a decision. But, of course, there are occasions when, either from prudence or politeness, absolute rejection of a proposition is veiled under the appearance of simple indecision or of a demand for further evidence; and at a time when to believe in certain theological dogmas was either dangerous or discreditable, the name sceptic may have been accepted on all hands as a convenient euphemism in speaking about persons who did not doubt, but denied them altogether. Again, taken in its original sense, the name sceptic is applicable to two entirely different, or rather diametrically opposite classes. The true philosopher is more slow to believe than other men, because he is better acquainted than they are with the rules of evidence, and with the apparently strong claims on our belief often possessed by propositions known to be false. To that extent, all philosophers are sceptics, and are rightly regarded as such by the vulgar; although their acceptance of many conclusions which the unlearned reject without examination, has the contrary effect of giving them a reputation for extraordinary credulity or even insanity. And this leads us to another aspect of scepticisman aspect under which, so far from being an element of philosophy, it is one of the most dangerous enemies that philosophy has to face. Instead of regarding the difficulties which beset the path of enquiry as a warning against premature conclusions, and a stimulus to more careful research, it is possible to make them a pretext for abandoning enquiry altogether. And it is also possible to regard the divergent answers given by different thinkers to the same problem, not as materials for comparison, selection or combination, nor even as indications of the various directions in which a solution is not to be sought, but as a proof that125 the problem altogether passes the power of human reason to solve.
  • 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 am getting to be myself again," he croaked. "You have got the better of me this time, but it will never happen again. Ah, you are keen and you are clever, but the old wolf is ever wiser than the young one. I have been robbed."

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

THREE:An apprentice in entering the workshop should avoid everything tending to an appearance of fastidiousness, either of manner or dress; nothing is more repulsive to workmen, and it may be added, nothing is more out of place in a machine shop than to divide one's time between the work and an attempt to keep clean. An effort to keep as neat as the nature of the work will admit is at all times right, but to dress in clothing not appropriate, or to allow a fear of grease to interfere with the performance of work, is sure to provoke derision.97
  • 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:Besides this want or difference of facilities which establishments may afford, there is the farther distinction to be made between an engineering establishment and one that is directed to the manufacture of staple articles. This distinction between engineering-works and manufacturing is quite plain to engineers themselves, but in many cases is not so to those who are to enter as apprentices, nor to their friends who advise them. In every case where engagements are made there should be the fullest possible investigation as to the character of the works, not only to protect the learner, but to guard regular engineering establishments in the advantages to be gained by apprentice labour. A machinist or a manufacturer who employs only the muscular strength and the ordinary faculties of workmen in his operations, can afford to pay an apprentice from the beginning a fair share of his earnings; but an engineering-work that projects original plans, generates designs, and assumes risks based upon skill and special knowledge, is very different from a manufactory. To manufacture is to carry on regular processes for converting material; such processes being constantly the same, or approximately so, and such as do not demand much mechanical knowledge on the part of workmen.

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