摘要:
A radio resource scheduling method for scheduling radio resources used for communications in a radio communication system includes user equipment configured to communicate with transceiver stations on the radio resources. The transceiver stations are configured to exchange coordination messages concerning radio resources affected by intra-system interference. The radio resource scheduling method includes allocating to each user equipment served by a transceiver station a corresponding radio resource and a corresponding transmission power level to communicate with the serving transceiver station. Allocating is based on coordination messages exchanged by the serving transceiver station.
摘要:
It is disclosed a process for the preparation of a compound of formula (I) or a salt thereof, comprising: nitrating a compound of formula (II) or a salt thereof, to obtain a compound of formula (IV) or a salt thereof, reducing it, to obtain a compound of formula (V) or a salt thereof, and subsequently cyclizing it to obtain a compound of formula (I) or a salt thereof and, if desired, converting a compound of formula (I) to a salt thereof, or vice versa, characterized in that: the nitration of a compound of formula (II) or a salt thereof is carried out with concentrated nitric acid in the presence of a strong inorganic acid and that the amino group in the compound of formula (II) is not protected.
摘要:
A novel process for the preparation of tolterodine, i.e. (R)—N,N-diisopropyl-3-(2-hydroxy-5-methylphenyl)-3-phenylpropanamine, in the racemic form, as well as intermediates useful for its preparation.
摘要:
A process for the preparation of 6-methyl-4-(R)-phenyl-chroman-2-one and 6-methyl-4-(S)-phenyl-chroman-2-one, intermediates for the synthesis of tolterodine and its (S) enantiomer, by reaction of 6-methyl-coumarin with phenylboronic acids, esters and derivatives thereof, in the presence of chiral catalysts.
摘要:
A novel process for the preparation of tolterodine, i.e. (R)-N,N-diisopropyl-3-(2-hydroxy-5-methylphenyl)-3-phenylpropanamine, in the racemic form, as well as intermediates useful for its preparation.
摘要:
A safety catheter includes a body having an axial channel communicating with a sheath for administration of fluids, a guide needle insertable, though the channel of the body, into the sheath to guide it during insertion into a patient's body, and a guide needle body, supporting the guide needle, insertable into the catheter body and provided with at least one seat for coupling with medical instruments, the guide needle being mounted slidably in the catheter body to be able to pass from a forward working position, wherein the guide needle protrudes forward from the catheter body, to a retracted safety position, wherein the guide needle is protected inside the catheter body, locking elements disposed in the guide needle, cooperating with complementary stop elements disposed in the catheter body, to lock the guide needle body respectively in the forward working and the retracted safety positions.
摘要:
A glow plug for internal-combustion engines, comprising: a metal body (12); a metal sheath (24) having one closed end (26) and one open end (28); a terminal (30) extending through the open end (28) of the sheath (24); a conductive powder (34) set in electrical connection with one end (36) of the terminal (30) and with the sheath (24); and a layer (38) of insulating powder set between the aforesaid conductive powder (34) and the sheath (24) in an area between the closed end (26) of the sheath (24) and the end (36) of the terminal (30).
摘要:
A clamp for clamping pipes, especially but not exclusively for combustion engine supply pipes, comprises a body (1) with at least two housing seats (2) which are adjacent and provided with two sidepieces (102, 202) which encompass a pipe (3) laterally. A coupling notch (4) for a catch-type distance piece (5) is provided between the adjacent sidepieces (102, 202) of two adjacent housing seats (2), the catch-type distance piece being borne by a clamping bracket (6) which can be clamped against the body (1) itself. According to the invention the catch-type distance pieces (5) and at least one of the associated external surfaces of at least one sidepiece (102, 202) have respectively at least a complementary tooth (105, 302) or respectively a tooth and a complementary reciprocal clamping notch. The catch-type distance pieces (5) and at least one of the two adjacent sidepieces (202) are advantageously provided with cooperative toothed portions (105, 302) which are matching or complementary and in the manner of the teeth of a saw, whilst the toothed portion (105) of the catch-type distance pieces is directed with the less steep sides in the coupling direction and the toothed portion (302) of the sidepiece (202) is directed in the opposite direction.
摘要:
A non-reusable safety syringe comprising a cylinder (1); an injection needle (4) fixed on the front end of the cylinder (1); a plunger (6) which is slidable in the cylinder (1) from a position of maximum withdrawal for the filling of the syringe to a position of maximum insertion for the discharging of the syringe, and which is mounted on a manually movable stem (7) which projects beyond the rear end of the cylinder (1); a protective sleeve (12) fitted slidably longitudinally on the outside of the cylinder (1) so that it can be moved from a withdrawn inoperative position, in which the needle (4) projects beyond it, to a forward safety position, in which the protective sleeve (12) extends entirely around the needle (4), covering it completely, and with securing means (23, 25) to automatically retain the protective sleeve (12), so that it cannot be retracted with respect to the cylinder (1), in its forward safety position and the needle-holder (3) in the protective sleeve (12) in its forward position.
摘要:
In a communication network, a node receives from user equipment information on the length of a queue of information units to be transmitted to the node from the user equipment. The information, for possible use by the node in scheduling transmission of these information units from the user equipment, is in the form of quantized queue length information indicative of a lower bound and an upper bound for the queue length. Transmission of information units from the user equipment to the node is detected at the node, and an improved estimate of the queue length is produced by correcting the lower bound and the upper bound via subtraction of the number of the detected information units transmitted from the user equipment to the node.