摘要:
An industrially scalable two-step process for preparing a β-L-2′-deoxy-nucleoside that results in a predominance of the β- over the γ-anomeric form of the compound is described. An optional third step may be used to prepare 3′-prodrugs of desirable β-L-2′-deoxy-nucleosides for the delivery of these pharmaceuticals effective for treating viral diseases. The synthetic process is applicable in particular to the formation of β-L-2′-deoxy-cytidine, a pharmaceutically acceptable salt or prodrug thereof. The process can provide a relatively uncontaminated product that may require no further isolation or purification, thereby making the synthesis easily scalable for industrial manufacture.
摘要:
FIG. 1 is a front perspective view of embodiment 1, showing my new design; FIG. 2 is a rear perspective view thereof of embodiment 1; FIG. 3 is a front view thereof of embodiment 1; FIG. 4 is a rear view thereof of embodiment 1; FIG. 5 is a left side view thereof of embodiment 1; FIG. 6 is a right side view thereof of embodiment 1; FIG. 7 is a top view thereof of embodiment 1; FIG. 8 is a bottom view thereof of embodiment 1; FIG. 9 is a front perspective view of embodiment 2; FIG. 10 is a rear perspective view thereof of embodiment 2; FIG. 11 is a front view thereof of embodiment 2; FIG. 12 is a rear view thereof of embodiment 2; FIG. 13 is a left side view thereof of embodiment 2; FIG. 14 is a right side view thereof of embodiment 2; FIG. 15 is a top view thereof of embodiment 2; FIG. 16 is a bottom view thereof of embodiment 2; FIG. 17 is an enlarged detail view of area 17 in FIG. 1; and, FIG. 18 is an enlarged detail view of area 18 in FIG. 1. The broken lines in the drawings illustrate the portions of the dog cage, which form no part of the claimed design. The dash-dot-dash broken lines encircling the enlarged views are for annotative purposes only and form no part of the claim thereof.
摘要:
FIG. 1 is a top perspective view of a rubik's cube male masturbator, showing my new design; FIG. 2 is a bottom perspective view thereof; FIG. 3 is a front view thereof; FIG. 4 is a rear view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a right side view thereof; FIG. 7 is a top view thereof; and, FIG. 8 is a bottom view thereof.
摘要:
An injection locked transmitter for an optical communication network includes a master seed laser source input substantially confined to a single longitudinal mode, an input data stream, and a laser injected modulator including at least one slave laser having a resonator frequency that is injection locked to a frequency of the single longitudinal mode of the master seed laser source. The laser injected modulator is configured to receive the master seed laser source input and the input data stream, and output a laser modulated data stream.
摘要:
A lens driving device includes a housing with an accommodation space, a barrel accommodated in the housing, a coil wound around the barrel and a magnet fixed to the housing. The lens driving device further includes a spring piece at least partially made of amorphous alloy materials, and the spring piece support the described barrel to perform the to-and-fro motion along the axis. Comparing to the relevant technologies, the lens driving device has good performance and high reliability.
摘要:
In accordance with the present invention, novel superparamagnetic magneto-dielectric polymer nanocomposites are synthesized using a novel process. The tunability of the dielectric/magnetic properties demonstrated by this novel highly-viscous solvent-free polymer nanocomposite that is amenable to building 3D electromagnetic structures/devices by using processes such as 3D printing, compression molding or injection molding, when an external DC magnetic field is applied, exceeds what has been previously reported for magneto-dielectric polymer nanocomposite materials.
摘要:
Various embodiments disclosed herein relate to a circuit for connecting a transceiver input/output to an antenna, the circuit including one or more of the following: a transceiver port; an antenna port; a reception path disposed between the transceiver port and the antenna port; a first amplifier configured to amplify a signal on the reception path when the circuit is configured according to a normal operation mode; and a first hybrid coupler configured to establish a bypass path around the first amplifier when the circuit is configured according to a bypass operation mode.
摘要:
A method and apparatus for transmitting and receiving data are disclosed. The method for transmitting data, comprising encapsulating one or multiple media access control protocol data units (MPDU) as a group media access control protocol data unit (G-MPDU) based on a length of the group media access control protocol data unit G-MPDU; fragmenting a current MPDU according to a residual length to obtain a fragmented MPDU when the residual length is insufficient to encapsulate the current MPDU; encapsulating the fragmented MPDU to the G-MPDU; and transmitting the encapsulated G-MPDU. The method ensures a high data transmission rate and does not wasting excess time to execute the fragmentation processing. The method also ensures a high resource utilization rate, utilizing fully the remaining length of the data unit.
摘要:
In accordance with the present invention, novel superparamagnetic magneto-dielectric polymer nanocomposites are synthesized using a novel process. The tunability of the dielectric/magnetic properties demonstrated by this novel highly-viscous solvent-free polymer nanocomposite that is amenable to building 3D electromagnetic structures/devices by using processes such as 3D printing, compression molding or injection molding, when an external DC magnetic field is applied, exceeds what has been previously reported for magneto-dielectric polymer nanocomposite materials.
摘要:
Disclosed in the present invention is a method for data transmission. The method comprises the following steps: receiving coded bit streams; mapping said coded bit streams to every spatial stream. A device for implementing stream mapping, a device for implementing rate matching and a transmitter are also disclosed in the present invention. With the method and device in the present invention, compared with the current stream mapping method, the mapping is more uniform with higher gain in high order modulation and multi-streams circumstance in a closed-loop model. And the system performance of a radio communication system could be further improved.