摘要:
A controlled release carvedilol formulation for less frequent, preferably once daily administration is described. The controlled release formulation comprises a therapeutically effective amount of carvedilol or a pharmaceutically acceptable salt thereof, a matrix forming polymer, a solubility enhancer and a pharmaceutically acceptable carrier. In one embodiment, a controlled release formulation having a therapeutically effective amount of carvedilol is contained in two or more subunits having different release profiles. The controlled release formulation is usable in the treatment and/or prophylaxis of one or more conditions such as cardiovascular disorders.
摘要:
A controlled release carvedilol formulation for less frequent, preferably once daily administration is described. The controlled release formulation comprises a therapeutically effective amount of carvedilol or a pharmaceutically acceptable salt thereof, a matrix forming polymer, a solubility enhancer and a pharmaceutically acceptable carrier. In one embodiment, a controlled release formulation having a therapeutically effective amount of carvedilol is contained in two or more subunits having different release profiles. The controlled release formulation is usable in the treatment and/or prophylaxis of one or more conditions such as cardiovascular disorders.
摘要:
The present invention provides an oral self micro-emulsifying pharmaceutical composition of a hydrophilic drug or a pharmaceutically acceptable salt thereof which, in addition to the hydrophilic drug, one or more solvents for solving the hydrophilic drug to form a drug-solvent solution and a surfactant system, further comprises one or more hydrophilic carrier which are compatible with said drug-solvent solution and the surfactant system. The oral self micro-emulsifying pharmaceutical composition of the invention exhibits comparative bioavailability to that of the hydrophilic drug through injection and is stable during storage. A method for preparing the oral self micro-emulsifying pharmaceutical composition is also provided.
摘要:
A frequency shift keying modulator having sigma-delta modulated phase rotator is disclosed, which includes a phase-locked loop for generating a voltage-controlled signal; a multi-phase generator for receiving the voltage-controlled signal and generating N phase-shift signals having same frequency according to the voltage-controlled signal, the N phase-shift signals having a same phase shift between the phase-shift signals adjacent to each other; a sigma-delta modulator for receiving transmission data and randomly outputting a modulation bit at a modulation clock according to the transmission data; and a phase rotator for receiving the N phase-shift signals and selectively outputting one of the N phase-shift signals and a frequency-divided signal according to the modulation bit, wherein the frequency of the frequency-divided signal is 1/(1+n/N) of the frequency of any one of the N phase-shift signals.
摘要翻译:公开了一种具有Σ-Δ调制相位旋转器的频移键控调制器,其包括用于产生电压控制信号的锁相环; 用于接收压控信号并根据压控信号产生具有相同频率的N个相移信号的多相发生器,N相移信号在与每个相邻相邻的相移信号之间具有相同的相移 其他; 一个Σ-Δ调制器,用于接收传输数据,并根据传输数据随机地输出一个调制时钟的调制位; 以及相位旋转器,用于接收N相移信号,并根据调制位选择性地输出N个相移信号和分频信号中的一个,其中分频信号的频率为1 /(1+ n / N)N个相移信号中的任何一个的频率。
摘要:
A nozzle device for purging a vacuum pump includes a nozzle, the top portion of the nozzle is a tapered portion, two sides of the tapered portion are installed with nozzle holes for guiding the exhausted air sub-flow to be exhausted from the two sides of vent end.
摘要:
A composite optical film including a base and an optical-field-modulation microstructure layer is provided. The base has a light incident surface and a light emitting surface, wherein the light incident surface and the light emitting surface are correspondingly disposed. The optical-field-modulation microstructure layer disposed on the light emitting surface has a first prism column set and a second prism column set, wherein the first prism column set has a plurality of first prism columns arranged in parallel and extended along a first direction, and the second prism column set has a plurality of second prism columns arranged in parallel and extended along a second direction. The first prism column set and the second prism column set are disposed across each other, and at least one of the first prism column set and the second prism column set has a smooth curve top.
摘要:
A frequency shift keying modulator having sigma-delta modulated phase rotator is disclosed, which includes a phase-locked loop for generating a voltage-controlled signal; a multi-phase generator for receiving the voltage-controlled signal and generating N phase-shift signals having same frequency according to the voltage-controlled signal, the N phase-shift signals having a same phase shift between the phase-shift signals adjacent to each other; a sigma-delta modulator for receiving transmission data and randomly outputting a modulation bit at a modulation clock according to the transmission data; and a phase rotator for receiving the N phase-shift signals and selectively outputting one of the N phase-shift signals and a frequency-divided signal according to the modulation bit, wherein the frequency of the frequency-divided signal is 1 / ( 1 + n N ) of the frequency of any one of the N phase-shift signals.
摘要翻译:公开了一种具有Σ-Δ调制相位旋转器的频移键控调制器,其包括用于产生电压控制信号的锁相环; 用于接收压控信号并根据压控信号产生具有相同频率的N个相移信号的多相发生器,N相移信号在与每个相邻相邻的相移信号之间具有相同的相移 其他; 一个Σ-Δ调制器,用于接收传输数据,并根据传输数据随机地输出一个调制时钟的调制位; 以及相位旋转器,用于接收N相移信号,并根据调制位选择性地输出N个相移信号和分频信号中的一个,其中分频信号的频率为1 /(1 + n N)是N个相移信号中的任何一个的频率。
摘要:
The present invention discloses a dual-lens hybrid diffractive/refractive imaging system comprising: a first lens including a concave surface and a convex surface; and the second lens including a convex surface and a concave surface. The concave surface of the first lens is an objective surface facing the object. The convex surface faces the convex surface of the second lens, while the concave surface of the second lens faces the charge-coupled device (CCD) through a filter. Any surface of the first lens and the second lens is spheric or aspheric. Moreover, the imaging system comprises at least one diffractive surface, referred to as a hybrid diffractive/refractive surface, formed on any surface of the two lenses. Therefore, aberration is eliminated and image quality is improved without increasing the number of lenses.
摘要:
An apparatus for homogeneously distributing lights includes a light guide plate, an incidence microstructure and an emergence microstructure. The incidence microstructure is arranged on a surface of the light guide plate and opposite to a light source. The emergence microstructure is arranged on a surface of the light guide plate opposite to the incidence microstructure. The lights emitted by the light source pass through said apparatus thereby being homogenously distributed. Thus the manufacture costs are lowered, and the light source utilization ratio is increased.
摘要:
A multistage pump includes a shaft assembly and a housing and spacing plates. The shaft assembly completed by forming shafts and rotors integrally. The spacing plates defining a plurality of successive compression chambers, each chamber is delimited by two symmetrical spacing plates, there has a ring groove associated with the spacing plates, and having an elastic component placed. When the elastic component pressed by the housing, it became leakage and the clearance between the rotors and the spacing plates be easily controlled, by this way, the pump using parts are easy to manufacture, can be machined accurately and which enable highly accurate assembly to be achieved. As to the assembling method, which is characterized by mounting the high pressure end axial bearing seat and the high pressured end plate, then to control the clearance between the high pressure end plate of the bearing seat and the rotors. Furthermore, to install the spacing plates and the housing make the compression chamber formed.