Abstract: A pitch control method and system of a symmetrical-airfoil vertical axis wind turbine collects data by an anemometer, an anemoscope and an angle sensor, outputs an optimum pitch angle based on a control law of a pitch angle and controls the pitch angle to be the optimum pitch angle through a pitch control actuator. In addition to input variables of the control law such as a wind velocity vin and a blade azimuth angle ?, constants such as a rotation radius R, a rotation velocity ? of the blade and aerodynamic coefficients c1, c2 and c3 are also related. A Reynolds number has little influence on three aerodynamic coefficients c1, c2 and c3. The pitch actuator controls the adjustment rods to realize the automatic pitch control of the blades. An expression of the control law of the pitch is concise, the calculation time is short, and a response speed is fast.

Abstract: A pitch control method and system of a symmetrical-airfoil vertical axis wind turbine is provided, which collects data by an anemometer, an anemoscope and an angle sensor, outputs an optimum pitch angle based on a control law of a pitch angle, and controls the pitch angle to be the optimum pitch angle through a pitch control actuator. In addition to input variables of the control law such as a wind velocity vin and a blade azimuth angle ?, constants such as a rotation radius R, a rotation velocity ? of the blade and aerodynamic coefficients c1, c2 and c3 are also related. A Reynolds number has little influence on three aerodynamic coefficients c1, c2 and c3. The pitch actuator controls the adjustment rods to realize the automatic pitch control of the blades. An expression of the control law of the pitch is concise, the calculation time is short and a response speed is fast.

Abstract: A pipe shield of a ventilating apparatus is disposed at an outdoor side relative to a ventilating apparatus body disposed at an indoor side, and includes a pipe shield base and a rear cover. The pipe shield has an air inlet and an air outlet disposed perpendicular to each other. The pipe shield's rear cover has a left side plate, a right side plate and a rear side plate. The distance from the pipe shield base to the rear side plate of the rear cover opposite to the air inlet of the pipe shield increases in a direction towards the air outlet of the pipe shield. A baffle is disposed at the middle portion of the rear cover, and fixed within the pipe shield by a rotating shaft fixed on the left side plate and the right side plate, the rotating shaft has a spring enabling the baffle to unfold.

Abstract: A pipe shield of a ventilating apparatus is disposed at an outdoor side relative to a ventilating apparatus body disposed at an indoor side, and includes a pipe shield base and a rear cover. The pipe shield has an air inlet and an air outlet disposed perpendicular to each other. The pipe shield's rear cover has a left side plate, a right side plate and a rear side plate. The distance from the pipe shield base to the rear side plate of the rear cover opposite to the air inlet of the pipe shield increases in a direction towards the air outlet of the pipe shield. A baffle is disposed at the middle portion of the rear cover, and fixed within the pipe shield by a rotating shaft fixed on the left side plate and the right side plate, the rotating shaft has a spring enabling the baffle to unfold.

Abstract: Method for inhibiting tumor cell formation or tumor cell growth, and method for inducing apoptosis in sperms, the method comprising administering to a patient in need thereof an antagonist that inhibits the binding of MAGE protein to KAP-1, thereby inhibiting MAGE gene function. Also disclosed are pharmaceutical compositions comprising the same, and method for screening a substance that inhibits MAGE protein binding to KAP-1.

Abstract: Method for inhibiting tumor cell formation or tumor cell growth, and method for inducing apoptosis in sperms, the method comprising administering to a patient in need thereof an antagonist that inhibits the binding of MAGE protein to KAP-1, thereby inhibiting MAGE gene function. Also disclosed are pharmaceutical compositions comprising the same, and method for screening a substance that inhibits MAGE protein binding to KAP-1.