摘要:
A fluorine-containing multifunctional ester compound represented by the formula ##STR1## wherein A is halogen atom, NO.sub.2 or N.sub.3, B is halogen atom or SR.sup.2, R.sup.1 is lower aliphatic group, aromatic group or aralkyl, R.sup.2 is lower aliphatic group or aromatic group.
摘要:
A liquid droplet ejecting apparatus having: a liquid droplet ejecting head; and a drive pulse generating unit, wherein the head includes: a nozzle; a pressure chamber which communicates with the nozzle; and a pressure applying section which changes a pressure in the pressure chamber, wherein the generated drive pulse is applied to the pressure applying section so as to change the pressure in the pressure chamber to cause the liquid in the pressure chamber to be ejected from the nozzle, and wherein the drive pulse includes a rectangular expansion pulse which causes expansion and then contraction of the volume of the pressure chamber and in which the pulse width PW of the expanding pulse is set so as to satisfy the following conditional equation, PW = π - ( tan - 1 1 2 π f τ ) 2 π f ( 1 ) where f represents an acoustic resonance frequency of a pressure wave in the pressure chamber and τ represents a damping time constant of the pressure wave.
摘要翻译:一种液滴喷射装置,具有:液滴喷射头; 以及驱动脉冲发生单元,其中所述头包括:喷嘴; 与喷嘴连通的压力室; 以及改变压力室中的压力的压力施加部分,其中所产生的驱动脉冲被施加到压力施加部分,以便改变压力室中的压力,以使得压力室中的液体从喷嘴喷射 并且其中驱动脉冲包括矩形膨胀脉冲,该矩形膨胀脉冲使得压力室的体积膨胀然后收缩,并且其中扩张脉冲的脉冲宽度PW被设置为满足以下条件方程:PW =&pgr; - (tan - 1 1 2&pgr;f f p t)2&pgr; (f)其中,f表示压力室内的压力波的声共振频率,τ表示压力波的阻尼时间常数。
摘要:
To a machining shape database, machining shapes are registered. A machining shape recognition function makes a comparison between CAD data from a CAD and the registered machining shapes, and extracts a matching registered machining shape. A machining method database stores information required to identify the machining method of a machining shape corresponding to the registered machining shape. Information about the machining method of the machining shape extracted by the machining shape recognition function is extracted by a machining step determination function from the machining method database, and machining methods are arranged in suitable order, whereby a machining step is generated.
摘要:
An imaging apparatus (20) measures shake of the apparatus by a gyro sensor (9), performs “a center stop control” until receiving an instruction for start of recording the still picture, and performs “a lens correction control” after the start of exposure in the imaging apparatus. The center stop control controls the correction lens position so as to stop a correction lens at an optical axis center position which is a position of the correction lens at which an optical axis of the imaging lenses (1) coincides with an optical axis of a correction lens (2). The lens correction control controls the correction lens position so as to correct blurring of the image formed on an imaging element (3) on the basis of the measuring result. The imaging apparatus (20) returns the correction lens (2) to the optical axis center position before receiving a next instruction for start of next recording after completion of the exposure to the imaging element, and then performs the center stop control on the correction lens (2).
摘要:
This invention provides a spread spectrum signal demodulator in which a noise component included in respective demodulation symbols is reduced and an effect of interference removal is further improved. Symbol decorrelating means detect correlations between spread codes allocated to spread spectrum signals to be removed and a receiving signal. A symbol deciding means 121 synthesizes one or the plurality of one symbol correlation values b1 to bk in common phase, namely, diversity-synthesizes them so as to decide a symbol. As the symbol decision, hard decision or soft decision can be used. Correlation modification means input the one symbol correlation values b1 to bk output from the symbol decorrelating means and the symbol decided result output from the symbol deciding means 121 thereinto, and modify the symbol correlation values b1 to bk. The modified symbol correlation values d1 to dk are transmitted into interference replicating means so as to be spectrum-spread by corresponding spread codes.
摘要:
The present invention provides a novel compound useful as a medicament, an acetylcholinesterase inhibitor, and an agent for preventing, treating and improving various kinds of senile dementia, Alzheimer-type senile dementia, cerebrovascular dementia or attention deficit hyperactivity disorder, namely, 1-benzyl-4-[(5,6-dimethoxy-2-fluoro-1-indanone)-2-yl]methylpiperidine represented by the following formula: or a pharmaceutically acceptable salt thereof, and a process for producing the same.
摘要:
A communication system includes a bidirectional tree network having a base end and a plurality of terminating ends, a central apparatus connected to the base end, a plurality of terminating equipment connected respectively to the terminating ends, and a plurality of subscriber terminals accommodated respectively in the terminating equipment. Each of the terminating equipment has a multiplexer for multiplexing information transmitted from the subscriber terminal accommodated therein to the central equipment, and a signal selection device for discriminating and selectively receiving only information which is destined for the subscriber terminal accommodated in this terminating equipment from information transmitted from the central apparatus to all the subscriber terminals via the tree network. The central apparatus has an exchange equipment for discriminating destination of information transmitted from the subscriber terminals via the tree network, and a loop back device for scrambling the information transmitted from the subscriber terminals via the tree network so that the scrambled signal can be decoded only by a signal selection device corresponding to the discriminated destination and for sending back the scrambled information to the tree network.
摘要:
A PSK signal which is subject to frequency fluctuation and noise is demodulated through a quasi-coherent detection process with a fixed local frequency oscillator (5) noise elimination process using a low pass filter (17,18) after frequency adjustment, and a frequency and phase regeneration process using a PLL circuit (20). The PLL circuit (20) is updated by the estimated center frequency of a received signal by using an FFT (fast Fourier transform) circuit (11), a power spectrum means (12,13,14), and a frequency estimation circuit (15) estimating the center frequency based upon the fact that the modulated signal component exists only on a high level portion of the frequency spectrum.
摘要:
An electronic component includes an electronic component body and metal terminals. The electronic component body includes a base member and external electrodes. The base member includes two opposed end surfaces, two opposed side surfaces, and two opposed principal surfaces. The external electrodes are disposed on the end surfaces of the base member. The metal terminals are connected to the external electrodes by bonding with solder. A relationship of about 21≦Vc/Vh≦about 320 is satisfied where Vc is a volume of the electronic component body and Vh is a volume of the solder provided at one of the pairs of the external electrodes and the metal terminals.
摘要:
A liquid droplet jetting head, having: a plurality of dividing walls to divide a plurality of flow channels, wherein at least a portion of the dividing wall is formed with a piezoelectric element; a flow path having a rectangular tubular from formed by an upper wall to close an upper surface of the flow path along an array direction of the plurality of the flow paths, and a lower wall to close a lower surface of the flow path; a nozzle to jet liquid in the flow path as the liquid droplet; and two driving electrodes formed independently on each wall surface of the dividing wall in a longitudinal direction of the flow path having the rectangular tubular form, wherein the nozzle is formed on either the upper wall or the lower wall.