摘要:
The invention intends to improve the gradation and the image quality in a display apparatus based on a current-controlled light emission device, represented by the organic EL device. There is provided a circuit configuration in which switch means is provided parallel to the light-emitting element, and a current path is provided by a change in the conductances of the switch means and the light-emitting element to control the light-emitting and non-emitting states of the light-emitting element. The circuit configuration enables gradational display by an analog change in the conductance, and time gradation display by controlling the light-emitting time.
摘要:
The invention discloses a method for fine control of the flow rate of a liquid by a microvalve device without using any mechanical structures. The method comprises, while passing the liquid through a flow channel penetrating a substrate of a heat-insulating material, the temperature of the liquid in the flow channel is decreased below the freezing point of the liquid by a temperature-controlling means such as a Peltier element facing the flow channel to close the flow channel by the solidified liquid and the temperature of the solidified liquid is increased above the melting point thereof to cause thawing of the solid resulting in re-opening of the flow channel.
摘要:
A rubber-erasable aqueous ink for a writing material composition contains water, a water-soluble polar solvent, and a particulate adhesive colored resin. The particulate adhesive colored resin contains a pigment and an adhesive resin which is adhesive on at least a part of a surface thereof. The particulate adhesive colored resin has a particle diameter distribution such that the amount of particles having a particle diameter of from 2 &mgr;m to 20 &mgr;m is not less than 70% by weight of all the particles.
摘要:
An aluminum salt solution and an alkali aluminate solution are subjected to a neutralization reaction to precipitate and form a pseudo-boehmite powder. The neutralization reaction is performed under a condition in which the reaction temperature is within a range of 55 to 71° C., pH is within a range of 8.5 to 9.5, and the solution feed time is within a range of 7 to 25 minutes. The obtained pseudo-boehmite is as follows. That is, the pore volume concerning pores having a pore diameter ranging from 20 to 600 Å is within a range of 0.8 to 1.8 cc/g as measured by the nitrogen adsorption method, and the maximum value of variation ratio dV/dD of the pore volume with respect to the pore diameter as measured by the BJH method is not more than 0.018 cc/g•Å. When the pseudo-boehmite is used, it is possible to produce a catalyst carrier for hydrogenation refining, which has a sharp pore diameter distribution and which suffers less decrease in strength upon impregnation with a catalyst solution.
摘要:
This invention includes a current output sensor, and a current AD conversion means which is connected to the output side of the current output sensor and has a current mirror circuit arranged on the input side of a comparator in order to directly A/D-convert an output from the current output sensor. A signal can be stably processed with a small circuit scale and low current consumption.
摘要:
A measuring chip for an optical analyzer includes a translucent or transparent substrate 1, and a sample solution chamber S formed on a sulface of the translucent or transparent substrate 1. The sample solution chamber S has an inlet S.sub.1 for introducing a sample solution to be analyzed, and an outlet S.sub.2 for discharging the analyzed sample solution. The sample solution chamber S is formed so as to be filled with the sample solution between the inlet S.sub.1 and the vicinity of the outlet S.sub.2 by the capillary phenomenon. On the translucent or transparent substrate 1, an analyzing region 10 is formed by stacking a metal thin film 2 and an immobilizing film 3 for immobilizing a physiologically active substance 4. On the analyzing region 10, the sample solution chamber S is formed to obtain a measuring chip for an optical analyzer particularly utilizing the surface plasmon resonance (SPR). Thus. it, is possible to obtain a measuring chip for an optical analyzer, which can be easily handled and which can carry out an analysis using a small quantity of sample solution.
摘要:
A pager comprises a receiver for receiving an image designating code together with a message, a display section, a memory for storing a plurality of images, and a CPU for, based on the image designating code received by the receiver, selecting an associated image and displaying the image together with the message on the display section. When a ringing signal transmitted from a base station is directed to this pager, the pager acquires a subsequent message and displays the associated image together with the message when the message contains an image designating code.
摘要:
An ultraviolet-curing liquid undercoating composition for use in metallizing FRP, which is a one-component type, has an unlimited pot life, and is excellent in adhesion and heat resistance. The composition comprises 20 to 80 parts by weight of a compound(s) containing at least two (meth)acryloyl groups in its molecule, 80 to 20 parts by weight of oil-modified alkyd resin(s), and 2 to 15 parts by weight of a sensitizer, optionally further 5 to 20 parts by weight of an amino resin based on 100 parts by weight in total of the above compound and the above alkyd resin(s). It is suited for the undercoating of an automotive reflector.
摘要:
Proposed is an efficient method for the preparation of vitreous hollow microspheres from particles of a vitreous volcanic deposit by a heat treatment to effect expansion of the particles by foaming. The inventive method comprises a step, prior to the heat treatment for expansion of the particles, in which the starting particles are dispersed in an aqueous medium containing aluminum sulfate and urea each in a specified concentration followed by a heating treatment of the dispersion so as to deposit a coating layer of aluminum hydroxide on the particle surface so that the efficiency of foaming can be greatly improved without the disadvantage of particle agglomeration.
摘要:
A new prepreg material having good tack drape properties and feasible out-time and articles derived therefrom as well as processes for preparation these products are disclosed. The prepreg is prepared by impregnating inorganic fibers with a compostion comprising:(A) fine powder of a metal oxide or oxides having an average particle diameter of not larger than 1 .mu.m,(B) a soluble siloxane polymer having double chain structure,(C) a trifunctional silane compound having at least one ethylenically unsaturated double bond in the molecule thereof,(D) a organic peroxide,(E) a radically polymerizable monomer having at least two ethylenically unsaturated double bonds; and heating the impregnated fibers.