摘要:
Apparatus for applying traction to an elongate cylindrical element produced by fusion of an end portion of a preform of glass material, in which a traction device is capable of being connected to a portion of the elongate cylindrical element to provide traction of the elongate cylindrical element along an axis. A device for the rotation of the elongate cylindrical element applies a twist to the elongate cylindrical element about the axis simultaneously with the traction.
摘要:
Apparatus for applying traction to an elongate cylindrical element produced by fusion of an end portion of a preform of glass material, in which a traction device is capable of being connected to a portion of the elongate cylindrical element to provide traction of the elongate cylindrical element along an axis. A device for the rotation of the elongate cylindrical element applies a twist to the elongate cylindrical element about the axis simultaneously with the traction.
摘要:
An apparatus and method for chemical deposition on a rod member having a support structure for supporting the rod member substantially coaxial to a deposition axis; a burner for depositing chemical substances on the rod member; and a rotation device for imparting a rotation motion to the rod member. The rotation device has a joint member of a type suitable to transmit torque between two misaligned members, for example, a double universal joint or a flexible joint, positioned between a motor and a rod gripping member.
摘要:
An apparatus and method for chemical deposition on a rod member having a support structure for supporting the rod member substantially coaxial to a deposition axis; a burner for depositing chemical substances on the rod member; and a rotation device for imparting a rotation motion to the rod member. The rotation device has a joint member of a type suitable to transmit torque between two misaligned members, for example, a double universal joint or a flexible joint, positioned between a motor and a rod gripping member.
摘要:
Device and method for chemical deposition on an elongated member of vitreous material in which a rotating gripping member causes a first end portion of the elongated member to rotate. The second end portion of the elongated member is borne by a pair of supporting members which are axially spaced apart (L1) and are capable of permitting angular rotational movement and axial sliding of the second end portion. Each supporting member also applies a radial constraint preventing the second end portion from moving away from the axis of rotation, thus forcing the second portion and the elongated member to lie with a longitudinal axis coaxial with the axis of rotation. Any curvature of the elongated member is corrected and recovered in this way.
摘要:
The invention relates to ergoline derivatives having the general formula (I): ##STR1## where R=H, CH.sub.3 ; R.sub.1 =H, halogen, CH.sub.3, phenylthio, C.sub.1 -C.sub.4 alkylthio; R.sub.2 =H, CH.sub.3 O, and R.sub.3 =H or R.sub.2 +R.sub.3 =chemical bond; R.sub.4 =C.sub.1 -C.sub.4 hydrocarbon; R.sub.5, R.sub.6, R.sub.8, R.sub.9 independently=H, C.sub.1 -C.sub.4 alkyl, or R.sub.5, R.sub.8 independently=H, C.sub.1 -C.sub.4 alkyl and R.sub.6 +R.sub.9 =CH.sub.2 CH.sub.2, CH.sub.2 CH.sub.2 CH.sub.2 ; R.sub.7 =H, C.sub.1 -C.sub.4 alkyl, phenyl, NR'R"; R',R" independently=H, C.sub.1 -C.sub.4 alkyl, acyl or NR'R"=heterocyclic ring; W=0, H.sub.2 ; n=0, 1, 2, and their pharmaceutically acceptable salts, these compounds exhibiting antihypertensive activity making them useful anxiolytic and antipsychotic agents. A process for their preparation and pharmaceutical compositions containing them are also described.
摘要:
Methods and apparatus for fusing together electrical conductors to a commutator are provided. A precise, timed, and controlled delivery of electric current to the fusing electrode of the fusing machine is achieved. A generic supply signal is converted into a precise and constant input signal through the use of monitoring and feedback techniques, which compare the current status of the physical and electrical phases of the fusing operation to various predetermined fusing profiles to determine the proper application of current to the fusing electrode.
摘要:
Ergoline derivatives of the formula I ##STR1## wherein R.sub.1 =H,CH.sub.3 ; R.sub.2 =H, halogen, CH.sub.3, CN, C.sub.1 -C.sub.4 alkylthio or phenylthio; R.sub.3 =C.sub.1 -C.sub.4 hydrocarbon; R.sub.4 =H, OCH.sub.3 ; R.sub.5 =H and R.sub.6 =--CH.dbd.CH--CONHR.sub.7 or R.sub.5 and R.sub.6 =.dbd.CH--CONHR.sub.7 ; R.sub.7 =2-thiazolyl, 3-pyridazinyl, 1,3,4-thiadiazol-2-yl or 4-pyrimidinyl group optionally substituted, and pharmaceutically acceptable salts thereof, display activity on the Central Nervous System and are useful as antiprolactinic agents. Their preparation and pharmaceutical compositions containing them are also described.
摘要:
There are provided compounds of formula 1: ##STR1## wherein R=halogen atom or CN, NH.sub.2 and NO.sub.2 group, and pharmaceutically acceptable salts thereof.The compounds are antipsycotic agents.
摘要:
Substituted imino derivatives of 4 H-2, 3-dihydrobenzopyran and 4 H-2, 3-dihydrobenzothiopyran, and pharmaceutical compositions containing them. The compounds are active on the central nervous system, in particular as central nervous system depressants, i.e., sedatives, anticonvulsive agents, tranquilizers and sleep-inducing agents.