摘要:
The present invention relates to a chemical synthesis method for phillyrin. The method of the present invention comprises: first dissolving a glycosyl receptor phillygenin and a glycosyl donor in an organic solvent for glycosylation to obtain tetraacyl phillyrin; then dissolving the tetraacyl phillyrin in a second organic solvent, and adding sodium methoxide for deacylation, adding an acidic pH regulator to regulate the pH value of the reaction mixture to neutral; and finally carrying out purification treatment to obtain phillyrin. The advantages and practical values of the chemical synthesis method for phillyrin of the present invention lie in: the raw material is easy to get, the catalysts used for glycosylation are cheap and easy to get, the production cost is greatly reduced, and it can be used for industrial production.
摘要:
A preparation of a kind of 20(R)-ginsenoside Rg3 medicinal composition aqueous solution containing ginsenoside Rg3 0.5˜10 mg/ml: add 0.1-5% of ginsenoside solution to 0.1˜30% of adjuvant A, B{circle around (1)}{circle around (2)}{circle around (5)} at the temperature of 40˜100° C., the ratio of these two is 1:1˜300, add water after the solvent is recycled under reduced pressure; another kind of 20(R)-ginsenoside Rg3 medicinal composition aqueous solution contains 0.1˜2 mg/ml of 20 (R) of the ginsenoside Rg3, the preparation: add 0.1˜5% of ginsenoside solution to 20˜65% of adjuvant B{circle around (3)}{circle around (4)} at the temperature of 60˜100° C., main material to adjuvant B=1:100˜400, add water after the solvent is recycled under reduced pressure. The above 20 (R) ginsenoside Rg3 composition aqueous solution and the powder after lyophilization can be used to prepare injectable, oral administration and external use, and the bioactivity of these preparations is high, and with the actions of anti cancer, efficacy potentiation and toxicity attenuation effects of the combined chemical or radiation therapy of tumor, enhancement of human immune functions, improvement of human memory, anti fatigue, and detumescence, pain relieving.
摘要:
Updating firmware of a display device. The display device may include a display screen and a video interface for receiving video signals from a host system and providing the video signals for display on the display screen. The display device may include a memory that stores program instructions for controlling operation of the display device. The display device may include a serial bus interface (e.g., a USB interface), which may receive signals from a host computer for updating the program instructions in the memory. A serial bus to first protocol bridge may receive the serial bus signals from the serial bus interface and convert the serial bus signals to signals of the first protocol. A display controller may update the program instructions in the memory of the display in response to the signals of the first protocol.
摘要:
A preparation of a kind of 20(R)-ginsenoside Rg3 medicinal composition aqueous solution containing ginsenoside Rg3 0.5˜10 mg/ml: add 0.1-5% of ginsenoside solution to 0.1˜30% of adjuvant A, B{circle around (1)}{circle around (2)}{circle around (5)} at the temperature of 40˜100° C., the ratio of these two is 1:1˜300, add water after the solvent is recycled under reduced pressure; another kind of 20(R)-ginsenoside Rg3 medicinal composition aqueous solution contains 0.1˜2 mg/ml of 20(R) of the ginsenoside Rg3, the preparation: add 0.1˜5% of ginsenoside solution to 20˜65% of adjuvant B{circle around (3)}{circle around (4)} at the temperature of 60˜100° C., main material to adjuvant B=1:100˜400, add water after the solvent is recycled under reduced pressure. The above 20(R) ginsenoside Rg3 composition aqueous solution and the powder after lyophilizaton can be used to prepare injectable, oral administration and external use, and the bioactivity of these preparations is high, and with the actions of anti cancer, efficacy potentiation and toxicity attenuation effects of the combined chemical or radiation therapy of tumor, enhancement of human immune functions, improvement of human memory, anti fatigue, and detumescence, pain relieving.
摘要:
A heat dissipating device supporting apparatus includes a base, and a securing element mounted to the mounting portion. The base includes a main body configured to support a heat dissipating device and a mounting portion extending from the main body. The securing element includes a fastener, an elastic member, and a mounting member. The mounting member includes a cavity portion, a supporting portion extending from the cavity portion, and a protrusion extending from an inner side the cavity portion. The supporting portion defines a through hole. The fastener includes a head portion and a shaft portion extending from the head portion. A cross-section of the head portion is greater than that of the shaft portion. The shaft portion is located in the through hole. The elastic member resists resiliently between the head portion and the supporting portion. The head portion resists between the elastic member and the protrusion.
摘要:
An electronic device enclosure includes a rear panel and a blocking board. The rear panel comprises a front surface and a back surface opposite to the front surface. A through opening is defined in the rear panel. The blocking board comprises a main body, a first flange and a second flange opposite to the first flange. A first stopping piece is extends from the first flange. A second stopping piece is extended from the second flange. A latch portion is located on the first flange. A first protrusion is located on the second flange. The latch portion and the second protrusion extend through the through opening by being elastically deformed, the latch portion and the second protrusion abut on the front surface, and the first stopping piece and the second stopping piece abut on the back surface.
摘要:
An enclosure includes a chassis and a bracket. The chassis includes a bottom panel, a rear panel and a side panel. The rear panel defines a latch hole. Two clamping pieces are located on the side panel. The bracket is engaged between the clamping pieces and includes a first sidewall and a second sidewall. A second hook and a resilient piece are located on the first sidewall. A first hook is located on the second sidewall. The first hook and the second hook are separately engaged with the two clamping pieces for preventing the bracket from moving along a first direction near to the bottom panel. The resilient piece is engaged in the latch hole to preventing the bracket from moving a second direction opposite to the first direction, and the resilient piece is elastically deformable to disengage from the lath hole.
摘要:
A connector includes a body and a socket extending from the body. A blocking wall is located on the body. The socket includes a top wall, a resilient piece located on the top wall. The blocking wall is surrounded the resilient piece for preventing the resilient piece from destroying.
摘要:
A connector assembly includes a first connector with a positioning portion and a second connector with a latch. A blocking portion is located on a second side of the first connector. The latch defines an oblique latching plane, the positioning portion defines an oblique sliding plane, and the blocking portion defines an oblique blocking plane. If the latch is aligned with the positioning portion and is slid towards the first connector, the oblique direction of the second latching plane is substantially the same as the oblique positioning plane. If the latch is aligned with the blocking portion and is slid towards the first connector, an acute angle is defined between the oblique direction of the second latching plane and the oblique direction of the blocking plane.
摘要:
A system is provided for detecting a liquid sample, and includes: a flow cell assembly formed with a sample receiving space therein, and inlet and outlet channels extending to the sample receiving space for guiding the liquid sample into and away from the sample receiving space; a sensor device including a sample detecting unit that is disposed in the sample receiving space, and that is operable to detect the liquid sample and to generate a detection signal accordingly, and a signal conducting unit that is connected electrically to the sensor device for conducting the detection signal therefrom; and a liquid introducing unit and a liquid discharging unit coupled to the inlet and outlet channels and cooperating therewith to form an introducing path and a discharging path for introducing the liquid sample into and for discharging the liquid sample from the sample receiving space, respectively.