摘要:
The element "lithium" has strong absorption lines near 6707.84 A and 3232.61 A and possesses specific isotope shifts at the respective absorption lines. With the aid of a laser capable of controlling the oscillation spectral width accurately to 0.01 A, the isotopes of this element are separated from each other by irradiating lithium atomic beam with a laser beam tuned to the absorption line of either of the isotopes, .sup.6 Li and .sup.7 Li, for thereby selectively exciting the isotope, ionizing the excited isotope along by irradiation with a laser beam having one photon energy enough to pump it from the excited state to the ionized state and separating the ionized isotope from the un-ionized isotope by means of a mass-filter.
摘要:
Oil grooves of a shutter and oil holes of a stepped rod constitute first orifices as variable orifices whose opening areas are variable according to the rotational position of the shutter. The oil grooves of the shutter and oil holes of the stepped rod constitute third orifices as variable orifices. Cut portions of inner disk valves constitute second orifices. The opening areas of the variable orifices are changed by rotating the shutter, thereby controlling damping force characteristics in a low piston speed region and the relief pressures of pressure control valves independently of each other, and thus increasing the degree of freedom for adjusting the damping force characteristics.
摘要:
A shock absorber includes a first passage and a second passage to which a working fluid flows out from one chamber in a cylinder by movement of a piston, a damping valve installed on the first passage and configured to regulate a flow of the working fluid caused by sliding of the piston to generate a damping force, a back pressure chamber applying an internal pressure to the damping valve in a closing direction of the damping valve, a back pressure chamber inflow oil passage introducing the working fluid from one chamber into the back pressure chamber, a pressure chamber provided in-between on the second passage, and a free piston installed in the pressure chamber so as to freely slide in the pressure chamber.
摘要:
To provide a rotor drive mechanism which realizes that a rotor rotating at high speed can be used by reducing the amount of heat and vibrations generated when the rotor is rotated at high speed and lowering a contact pressure between an outer surface of the rotor and an inner surface of a stator inner hole or preventing the outer surface of the rotor and the inner surface of the stator inner hole from contacting each other.A rotor drive mechanism (53) is capable of causing an external screw type rotor (22) of an uniaxial eccentric screw pump (23) to rotate and carry out a revolution movement, the uniaxial eccentric screw pump (23) is configured such that the external screw type rotor (22) is attached to an inner hole (29a) of an internal screw type stator (29), and the external screw type rotor (22) is caused to rotate by a rotation speed control driving portion (26) and is caused to carry out a revolution movement by a revolution speed control driving portion (24).
摘要:
In a multipoint scale for weighing a load applied to a placement section by a plurality of weight sensor units, the weight sensor unit includes a weight sensor having a strain-sensitive part; a first flexible elastic member for receiving the load applied to the placement section; a load transmission part for transmitting the load from the first flexible elastic member to a power point of the weight sensor; a load support part for supporting a fulcrum of the weight sensor; and a second flexible elastic member for receiving the load applied to the load support part and for maintaining a direction of the load applied to the strain-sensitive part of the weight sensor to be vertical in accordance with a deflection of the first flexible elastic member. Torsion of the weight sensor is avoided by reducing the effect of deflection of the placement section on transmission of the load to the weight sensor. Because the effect of the deflection of the placement section is reduced, a larger placement table can be used, and the placement table does not need to be a rigid body, enabling the use of a light-weight and inexpensive member or structure.
摘要:
In a load transfer mechanism which transfers load to a load cell that constitutes a Roberval mechanism, a load transfer member has at least an area right above a load cell mounting section in the top surface thereof as a concave surface area formed to be lower than the remaining area of the top surface thereof so that it does not contact a cover member. Thus, if the barycentric position of the load of an object to be weighed placed on the cover member, regardless of whether the load is concentrated load or divided load, the load transfer mechanism can reduce the difference of the influence of deflection of the load transfer member or moment imposed on the load, transfer given load to the load cell through the load transfer member and decrease a span error produced by the load position of an object to be weighed.
摘要:
A wheelchair scale is provided wherein triangular or trapezoidal box-shaped members are used for forming a support base having a truss structure. The box-shaped members are formed in advance by welding, and are then welded together. Since the welding processes can be performed separately, work efficiency is improved. In addition, since the support base has a truss structure, it supports a large amount of weight without deflection, even though its thickness is relatively small. In addition, the weight of the support base is reduced compared to a conventional base having a pipe structure. Furthermore, because the height of the support base from the floor is reduced compared to a typical conventional structure, a wheelchair can be easily moved onto the support base.
摘要:
Disclosed is a measuring apparatus for a physical phenomenon by photoexcitation, in particular a delay time modulated and time-resolved, scanning probe microscope apparatus providing an ultimate resolution both temporal and spatial. The apparatus comprises an ultrashort laser pulse generator (2); a delay time modulating circuit (6) which splits an ultrashort laser pulse (3) produced by the ultrashort laser pulse generator (2) into two and which also modulates a delay time td between the two ultrashort laser pulses (4 and 5) with a frequency (ω); a scanning probe microscope (7); and a lock-in detection unit (8) which performs lock-in detection with the delay time modulation frequency (ω) of a probe signal (11) from the scanning probe microscope (7). It can detect the delay time dependency of the probe signal (11) as its differential coefficient to the delay time, with no substantial influence from fluctuations in the intensity of ultrashort laser pulses (3) while preventing the probe apex (19) from thermal expansion and shrinkage by repeated irradiation with ultrashort laser pulses (3). A photoexcited physical phenomenon dependent on a delay time between ultrashort laser pulses can thus be measured at a temporal resolution in the order of femtoseconds and at a spatial resolution in the order of angstroms.
摘要:
A method of modifying a solid surface from non-adhesive to adhesive and a solid material are provided. In a method of modifying a solid surface, a gaseous mixture comprising a modifier compound containing at least silane atom, titanium atom or aluminum atom is sprayed on the solid surface while the gas is heated to 400° C. or more with a heat source, or a gaseous mixture comprising a compound containing at least a silane atom, a titanium atom, or an aluminum atom is sprayed on the solid surface, and then the solid surface is heated to 400° C. or more.
摘要:
An antenna system is provided with an antenna panel 1 which has fine bumps and dips 4 formed on a mirror surface side, which is one of surfaces opposing to each other, by etching, wherein the fine bumps and dips scatter sunlight entering the mirror surface side of the antenna panel 1 to suppress the collection of the sunlight and regularly reflect radio waves having longer wavelength than the sunlight entering the mirror surface side of the antenna panel.