Research on Methods of Weft Insertion by Air Gun Sakamoto, T.; Inui, N.; Suzuki, T. ...
Journal of the Textile Machinery Society of Japan - Transactions,
1966/04/20, Letnik:
19, Številka:
4
Journal Article
Odprti dostop
The following means and basic experiment were tried in order to develop a new shuttleless loom which can run at high speed. After jetting out the measured weft through the piercing hole in a carrier ...which is set in a shooting barrel, the air shoots out the carrier into the shed. The weft is inserted in the shed while being squeezed through the hole of the carrier. It has been found that the carrier of 3 gr can fly as fast as 27 m/sec by compressed air of 2-3 kg /cm2. From the results of the basic experiment it is concluded that the above method is suitable for attaining the object, and a new type of weft insertion equipment has been trially produced.
Permeation behavior of oxygen, nitrogen, carbon dioxide, methane, isobutane, and five inert gases in poly 1- (trimethylsilyl) -1-propyne was studied at 30, 50, and 70°C in the pressure region below 1 ...atm. The sample films were prepared by prolonged solvent-casting at room temperature, and the cast films were leached in methanol until use. For oxgen and for inert gases, the permeability coefficients P increased slightly with increasing pressure at lower pressures and leveled off in the middle and high pressure regions. The time lag, on the other hand, decreased with increasinging pressure at lower pressures and approached to a limiting value at higher pressures. A noticeable physical aging effect on P was observed: for example, P for isobutane at 30°C decreased by about two orders of magnitude over the period of about 100 days under vacuum. The decrease of P occurred in two stages, a rapid decrease in the first stage and a rather slow one in the second stage. Sorption measurements for isobutane were made at 25°C; some excess volume of the polymer film was suggested by the results. The physical aging effect on gas permeabilities is discussed in terms of consolidation of the excess volume with the increase of total time under vacuum.
A proteinase from the culture supernatant of marine luminous bacterium, Vibrio harveyi strain FLN-77, was purified. The purified enzyme had a molecular weight of 62000. The enzyme was most active at ...pH 8.0 and 55°C, and was stable below 45°C. The enzyme activity was completely inhibited by ethylendiaminetetra acetic acid, orthophenanthroline and phosphoramidon. Metal ions such as Cu2+, Hg2+ and Ni2+ also inhibited the activity. These results indicated that this enzyme is a metal-chelator-sensitive, alkaline proteinase.
The authors have investigated the effects of double-membrane filtration with hollow fiber membranes made of different artificial materials and low-density lipoprotein (LDL)-adsorbent dextran sulfate ...cellulose (DS) columns on coagulation-related proteins and complement components to evaluate their hemocompatibility. All membrane filters showed similar sieving effects, which depended upon the molecular weights of the proteins. In the double-membrane filtration system, free protein S, protein C, antithrombin III, and alpha 1-antitrypsin were returned to the intracorporeal circulation, whereas alpha 2-macroglobulin and fibrinogen were almost completely removed from the circulation; C4b-binding protein (C4BP)-protein S complexes were also trapped by the second membrane, and in some instances were even blocked by the first membrane, if it was made of material that activated the classic pathway of the complement system. The DS column adsorbed C4BP-protein S complex, but free protein S was almost completely recovered in the eluate.
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