摘要:
This invention relates to the compounds represented by general formula (I) and the processes for their preparation, wherein R is selected from C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.6 cycloalkyl, phenyl unsubstituted or substituted by a halogen atom or nitro group, biphenyl unsubstituted by a halogen atom or nitro group, naphthyl unsubstituted or substituted by a halogen atom or nitro group. The compounds of this invention are used to prepare agents for prevention and treatment of AIDS and drugs against malaria and toxoplasmosis. ##STR1##
摘要:
The present invention relates to the use of compounds of formula (I) in the treatment of AIDs, wherein, R1 is -Glc2-Glc, R2 is selected from the group of -Glc6-Glc, -Glc6-Ara(p), -Glc6-Xyl and -Glc6-Ara (f); and R3 is H, and also relates to the composition comprising the above compounds and the use of the herbal extracts in the treatment of AIDS.
摘要:
The present invention provides a combined AIDS vaccine for preventing and/or treating AIDS, which consists of four or more different vector-based AIDS vaccines, wherein HIV protein gene comprised in the different AIDS vaccines may be same. A use method of the vaccine comprises inoculation of one AIDS vaccine each time, wherein inoculation of each vaccine may be continuously performed twice, and after sequential application of the four or more vector vaccines, repeated sequential application of the vector vaccines may be performed
摘要:
A medicinal herbs composition includes the extract powders of Scutellaria baicalensis Georgi and Rubia cordifolia L, and powders of ginsenoside and Cordyceps sinensis (Berk.) Sacc. The present invention further concerns the preparation method of the said medicinal herbs composition and the use of the same for treating AIDS.
摘要:
A method for providing an encapsulated flavorant or chemesthetic agent in a smoking article includes forming an emulsion including: (i) a first aqueous solution, comprising one or more cross-linkable polysaccharides; and (ii) a hydrophobic additive comprising one or more flavorants or chemesthetic agents. The method also includes extruding the emulsion into a second aqueous solution in the form of an elongated structure, cross-linking at least a portion of the one or more cross-linkable polysaccharides, removing the cross-linked elongated structure from the second aqueous solution, introducing the cross-linked elongated structure into a filter, or into a rod including a smoking composition, or both; and forming the filter or the rod of the smoking composition into a smoking article. The method can include a drying step.
摘要:
An electronic device having a liquid crystal shutter is disclosed. A liquid crystal shutter is provided in an area formed by expanding a liquid crystal display. The liquid crystal shutter includes a rear polarizer, a rear glass substrate, a segmented electrode, a liquid crystal, a counter electrode, a front glass substrate, a shutter aperture, and a front polarizer. A camera module is disposed behind the rear polarizer. A voltage applied to the segmented electrode can be controlled to visually expose or hide the lens of the camera module from a shutter aperture.
摘要:
A frequency synthesizer within an FM receiver employs a Phase-Locked Loop (PLL) to generate a Local Oscillator (LO) signal. The LO signal is supplied to a mixer. The FM receiver also includes jammer detection functionality. If no jammer is detected, then the loop bandwidth of the PLL is set to have a relatively high value, thereby favoring suppression of in-band residual FM. If a jammer is detected, then the loop bandwidth of the PLL is set to have a relatively low value, thereby favoring suppression of out-of-band SSB phase noise. By adaptively changing loop bandwidth depending on whether a jammer is detected, performance requirements on sub-circuits within the PLL can be relaxed while still satisfying in-band residual FM and out-of-band SSB phase noise requirements. By allowing the VCO of the PLL to generate more phase noise due to the adaptive changing of loop bandwidth, VCO power consumption can be reduced.
摘要:
A process for producing a coated filter plug for a smoking article including: (a) incorporating an additive to a porous filter plug, thereby obtaining an impregnated filter plug; (b) coating a surface of the impregnated filter plug with a cross-linkable polymer material; and (c) cross-linking the cross-linkable polymer material, to form a cross-linked, breakable coating substantially enclosing the impregnated filter plug. The process may further include at least partially coating the impregnated filter plug with a cross-linking agent prior to, or subsequent to, coating with the cross-linkable polymer material.
摘要:
A distributed system in which time-dependent credentials are supplied by controllers that operate according to different local times. Errors that might arise from the controllers generating inconsistent credentials because of time skew are avoided by identifying credentials generated during transition intervals in which different ones of the controllers may generate different credentials at the same absolute time. During a transition interval, controllers and other devices may use credentials differentially based on the nature of the authentication function. Each controller may periodically renew its credentials based on self-scheduled renewals or based on requests from other devices, such that renewal times are offset by random delays to avoid excessive network traffic. Controllers may determine which credential is valid for any given time, based on a cryptographically secure key associated with that time and information identifying the entity that is associated with that credential.
摘要:
Techniques to improve low noise amplifiers (LNAs) with noise canceling are described. LNA includes a first and a second amplifier which work together to noise cancel the noise generated at an input stage circuit. The input stage circuit receives an RF signal and is characterized by a first node and a second node. The first amplifier converts a noise voltage at the first node into a first noise current at an output of the first amplifier. The second amplifier is directly coupled to the output of the first amplifier and provides noise canceling by summing the first noise current with a second noise current generated by the second amplifier as a function of the noise voltage at the second node. The proposed techniques eliminate the need for large ac coupling capacitors and reduce the die size occupied by the LNA.