A memory control system comprises a memory unit including a plurality of chips each having a shift register type memory having a plurality of information loops, the number of chips being larger than a predetermined number, the predetermined number of bits out of those bits which are read from or written into the information loops of the respective chips at the same timing constituting a unit infor...

20-Dihydro-20-deoxy-23-demycinosyltylosin (DH-DO-DMT), 20-dihydro-20-deoxy-5-O-mycaminosyltylonolide (DH-DO-OMT), specified acyl ester derivatives, and their acid addition salts are useful intermediates and antibacterial agents. Methods of preparing DH-DO-DMT and DH-DO-OMT by fermentation of Streptomyces fradiae and the microorganism S. fradiae ATCC 31733 are included.

PURPOSE:To detect exactly a nuclear magnetic resonance point independently of the phase of a detection system by detecting a resonance signal for controlling magnetic field by two detectors different in the phases by 90 deg., performing the addition, etc. after squaring to determine the resonance information. CONSTITUTION:The nuclear magnetic resonance detecting signal through a transmitting and r...

Compounds of the above formula (X=H or OH, R1=H, OH or OCH3, R2=Br, Cl or F) and their acid addition salts are useful as antitumour agents. Those in which X=H may be prepared by an exchange reaction between a 4'-epi-4'-O-trifluoromethanesulphonyl-N-protected-daunorubicin (or a corresponding 4-demethyl or 4-demethoxy derivative) and (C4H9)4NCl, (C4H9)4NBr or CsF. Those in which X=OH are pre...

3 sec -Epioleandomycin-Y 3 sec ,4 sec -carbonate, 4 sec -epioleandomycin-Y 3 sec ,4 sec -carbonate, their pharmaceutically acceptable salts, and pharmaceutical compositions containing them are disclosed. The compounds are antibacterial agents. Also disclosed are certain intermediates therefor, being 2 min -O-acyl derivatives of 8-de(spirooxiranyl)-8-iodomethyl-8-hydroxy-3 sec ,4 sec -anhydro-3 sec...

Apparatus and method is provided for making a three-dimensional film forming structure for imparting a selectively apertured three-dimensional pattern to a heated plastic matorial which is either fed in film form from a supply roll or extruded as a melt directly onto the surface of said forming structure and is subjected to a fluid pressure differential while in contact with its surface. In a pref...

An apparatus and method for monitoring the received pulses of a transmitted pulse code modulation signal to determine if the received pulses lie within a predetermined pulse distortion tolerance zone is disclosed. The received pulses are monitored to determine the number of received pulse edges which are received during first and second consecutive predetermined time zones, the total period of the...

PURPOSE:To form a tin oxide film excellent in haze at a high speed by a CVD process, by bringing the vapor of monobutyl stannic trichloride as a tin compound into contact with the surface of a heated substrate. CONSTITUTION:Carrier gas formed by a compressor 2 and held under predetermined pressure through a reducing valve 3 is sent to an evaporator 1, to send the vapor of a tin compound inside the...

A portable cephalostat is shown as having a frame-like base subassembly which provides for an area upon which a patient's head is to rest and a support for supporting locating arms which serve to locate the patient's head in a selected position; the base subassembly provides for the placement of a first film, to be exposed, below the patient's head and for the placement of additional film, also to...

The process of the invention comprises the following steps: (a) sensing, by means of a pair of photocells 11, 12, the position of the article 6 to be conveyed on conveyor belt units 2, 3, 4 and 5 at least one unit 2 consists of a pair of conveyor belts 8, 9 located side by side and capable of being driven independently of one another; (b) comparing the angular position of the article 6, thus pos...

In a process for the dehydration of gases by permeation through a membrane of selective permeability, the membrane comprises a bundle of hollow fibres based on polymers and open at both ends, the methane permeability of which is at least 10-5 cm3/cm2.s.cm Hg and the water/methane selectivity factor of which is greater than about 100. The gas to be dehydrated is supplied under pressure to a chamber...

PURPOSE:To improve the locating precision of the titled recognizing device by a method wherein any hot air convection on the vertical path of an optical imaging system is restricted by an air convection preventive plate provided on the image pickup optical system to reduce the waving of input images. CONSTITUTION:A substrate 14 and semiconductor chips 15 are placed on a substrate placing bed 13 wh...

PURPOSE:To obtain high watertightness which maintains electric conduction by arranging a metallc O or C ring between the internal surface of a sleeve which pierces a thin metallic pipe fixed to an anchor and the external surface of the thin pipe. CONSTITUTION:An anchor 3 and a copper tube 2 are shown in the figure on a large scale; and the thin metallic pipe 13 with less thickness deviation is bra...

PURPOSE:To facilitate maintenance by easily assembling and disassembling an adapter used for a multicore optical fiber connector even after components are fitted to a housing. CONSTITUTION:A flange 8a which has a smaller diameter than the inner circumference of the adapter body 8 and is used for attachment to the housing is provided at a specific position on a cylindrical shaft, and a key groove 8...

PURPOSE:To enable use as an intrinsic optical transmission line and also as functional optical fibers by forming a shape memory alloy memorizing a prescribed shape along the side of the optical fiber strand in parallel to it. CONSTITUTION:A shape memory alloy allowed to memorize a prescribed shape is arranged in parallel to an optical fiber strand coated with a clad around the core to constitute a...

An air cleaner assembly (10) which includes a mechanism (14) for inducing the flow of air through the air cleaner (10) and for backwashing a filter element (18) is disclosed. A filtering chamber (28) is defined between the interior of a housing (12) and an exterior of a tubular shaped filter element (18). The mechanism (14) includes an air inlet plenum (32) and an accumulator chamber (34). Pressur...