摘要:
A method for vapor-phase synthesis of diamond comprises burning a raw material compound for synthesis of diamond thereby forming a combustion flame (2, 22, 32, 42), disposing a substrate (5, 25, 35, 45) for deposition of diamond in said combustion flame, and keeping said substrate at a prescribed temperature, thereby inducing deposition of diamond on said substrate.
摘要:
2ʹ3,ʹ-dideoxynucleosides which are effective in inhibiting the infectivity of the human immunodeficiency virus and which are stable in an acidic environment are disclosed, which compounds conform to the formula: wherein X is selected from the group consisting of hydrogen, F, CN, N₃ and NO₂; Y is either H or F; with the proviso that Y is F only when X=H. Also disclosed is a compound of the formula: Also disclosed are compounds conforming to the formula: wherein R may be either OH or NH₂; and L is NH₂. Also disclosed are compounds conforming to the formula: wherein A is selected from the group consisting of OH and NH₂ B is selected from the group consisting of H, CH₃, CF₃, CH=CHBr, and halogen.
摘要:
Pyrido[2,3-d]pyrimidine compounds of formula wherein: R¹ is -NHCH(COOR²)CH₂CH₂COOR³, or OR² in which each of R² and R³ is hydrogen or a carboxylic acid protecting group; and n has a value of from 1 to 3, are prepared through the reaction of 2,4-diamino-6(1H)-pyrimidone and an activated derivative of a dialdehyde. A typical embodiment utilizes the dinitrile.
摘要:
An apparatus for reading commodity data is disclosed which comprises a support member, a reader formed of a reader body and a reading window provided on one face of the reader body, in which the reader is attached to the support member for rotation. The attitude of the reading window can thus be adjusted according to the stature of the operator enabling the operator to perform a tireless reading operation. The attitude of a display has also been made adjustable.
摘要:
A lock ring device (30) for locking the soft jaws (20) of a lathe chuck (10) or the like for holding the jaws (20) during the machining thereof to fit a workpiece to be held by the jaws, the device being adjustable to adjust the jaws in the locking position for the exact amount of metal removal desired.
摘要:
A spectacle frame (10) having a removable decorative component (21) located in a groove (19) formed in the spectacle frame (10), which groove (19) tapers outwardly from the surface (16) of the frame (10) in transverse cross-section. The decorative component (21) including an elongate spigot (20) having a dove-tailed cross-section complimentary to that of the groove (19) and arranged to engage in the groove (19), and a further portion (21), which is of greater length and width than the groove opening (19).
摘要:
A refractory cement particularly a cement cotaining chopped ceramic fibres and a hydrous aluminium oxide contains aqueous lithium silicate as the setting component.
摘要:
An aqueous dispersion of an organic peroxide which contains 0.01 to 10% by weight of crystalline cellulose and optionally further contains 0.001 to 10% by weight of at least one member selected from the group consisting of anionic surfactants and nonionic surfactants excels in shelf life, exhibits low viscosity, and is useful as a polymerization initiator for ethylenically unsaturated monomers.
摘要:
A process of producing an evenly cooled comminute of meat particles ready for forming comprises forming a primary comminute from fresh meat, on a first comminution device (1) cooling the particles of the primary comminute into a coherent strip (10) on a moving refrigerated surface of a drum (7) and subjecting the strip to a secondary comminution, on a secondary comminution device (13) with a reduction in particle size and a temperature equalization.
摘要:
A liquid filtering apparatus, especially but not exclusively for cold milk, comprises a substantially cylindrical tubular casing (l0) having an inlet (ll) at one end for connection to a source of liquid to be filtered and an outlet (l3) at the other end for the filtered liquid, and a removable filter sock (l8) in the casing having an open end (l9) adjacent to the inlet and a closed end (20) remote from the inlet. The internal diameter of the casing (l0) along at least a substantial part of the length of the casing is greater than the internal diameter of the casing adjacent to the inlet and the cross-sectional area of the filter sock (l8) decreases in the direction from the open end (l9) thereof to the closed end (20).