摘要:
In an optical wavelength tunable filter (AOTF) using an acousto-optic effect of the present invention, there is provided a single SAW waveguide which propagates a surface acoustic wave generated by an IDT along respective arm portions of an optical waveguide. The SAW waveguide is formed with a pair of low sound-velocity areas having a curved belt shape, in which a mode distribution of a propagating SAW is changed symmetrically with respect to a straight line as an axis passing through the middle of the respective arm portions, while keeping the sound velocity of the SAW constant. As a result, wavelength dependence and polarization dependence of the filter property, and an increase in sidelobe level, generated due to weighting of the SAW intensity, can be suppressed.
摘要:
An aromatic amide block copolymer containing a specific aromatic amide compound unit and having a weight average molecular weight, as reduced into standard polystyrene measured by the gel permeation chromatography, of from 10,000 to 1,000,000.
摘要:
An object of the present invention is to achieve an IPv6/IPv4 packet conversion system capable of TCP-compliant packet size control while executing packet conversion between IPv4 and IPv6 networks. Accordingly, the system of the present invention comprises an IPv6/IPv4 translator installed between IPv6 and IPv4 networks and equipped with a means to output MSS data of a specific value to the IPv4 server when the translator performs packet conversion between IPv6 and IPv4 protocols. The MSS output means employs: a) An MSS conversion block for converting MSS data contained in a session initiation packet input by an IPv6 client into MSS data of a specified value and outputting that data to an IPv4 server. b) An MSS check block for checking the existence of MSS data in a session initiation packet input by an IPv6 client and MSS conversion block for, in the case of the absence of MSS data in the session initiation packet, adding MSS data of a specified value to the packet for outputting to the IPv4 server. These features enable packet size control by adjusting the MSS value of the TCP without the issuance of the “Packet Too Big” message of the ICMP.
摘要:
A network system using an IPv4/IPv6 translator for bilaterally translating packets between IPv6 and IPv4 protocols, wherein the IPv4/IPv6 translator is equipped with an address table for storing home addresses and care-of addresses in pairs for each MIPv6 mobile node. The IPv4/IPv6 translator functions as the correspondent node of the MIPv6 mobile node in question after the MIPv6 mobile node has moved out of the home link thereof.
摘要:
The present invention relates to an agent inhibiting progress of pterygium and postoperative recurrence of the same. N-(3,4-Dimethoxycinnamoyl)anthranilic acid represented by the formula: ##STR1## or a pharmaceutically acceptable salt thereof has an inhibitory activity on proliferation of pterygium tissues, and a pharmaceutical composition comprising as the active ingredient the same is useful as an agent inhibiting progress of pterygium and postoperative recurrence of the same.
摘要:
A polypropylene resin composition comprising from 5 to 99.9 wt % of a polypropylene resin (A) and from 95 to 0.1 wt % of an ethylene/.alpha.-olefin copolymer elastomer (B) satisfying the following conditions (a) to (d):(a) the .alpha.-olefin has a carbon number of from 4 to 20,(b) the .alpha.-olefin content is larger than 65 wt % and at most 95 wt %,(c) the density at 23.degree. C. is less than 0.88 g/cm.sup.3, and(d) no peak of crystal fusion is observed by a DSC method.
摘要翻译:包含5至99.9重量%的聚丙烯树脂(A)和95至0.1重量%的满足以下条件(a)至(d)的乙烯/α-烯烃共聚物弹性体(B)的聚丙烯树脂组合物:( a)α-烯烃的碳数为4至20,(b)α-烯烃含量大于65重量%且至多95重量%,(c)23℃时的密度小于 0.88g / cm 3,(d)通过DSC法观察不到结晶熔融峰。
摘要:
A system clarifies the damaged state of a plant, and estimates the life expectancy of the plant so as to administer the integrity of the plant. The system includes an apparatus for estimating the life expectancy of each of various pieces of component constituting the plant, a data base controlling apparatus, an apparatus for estimating the life expectancy of the entire plant, and a plant life extension and evaluation apparatus. The system is capable of making a specific proposal of a life extension plan which is necessary to and effective for the extension of the entire plant, and which is proposed including economical evaluation, thereby facilitating the conservation of the integrity of the plant, and also facilitating the maintenance and control thereof.
摘要:
This invention provides novel 4H-quinolizin-4-one compounds which exhibit a selective inhibitory activity against IgE-antibody formation, and have utility for treatment of diseases associated with IgE formation in mammals, such as allergic bronchial asthma, allergic rhinitis, atopic dermatitis, hypersensitiveness, and the like.
摘要:
This invention provides novel 4H-quinolizin-4-one compounds which exhibit a selective inhibitory activity against IgE-antibody formation, and have utility for treatment of diseases associated with IgE formation in mammals, such as allergic bronchial asthma, allergic rhinitis, atopic dermatitis, hypersensitiveness, and the like.
摘要:
The present invention relates to a device for detecting the center of a steering angle in a vehicle.This device comprises a steering angle sensor provided on a vehicle steering mechanism for electrically detecting a steering angle, a temporary storing portion for temporarily storing a center value calculated in response to an output from the sensor through a first switch, a comparison circuit for comparing the center value stored in the temporary storage portion with an output from the steering angle sensor to ON-OFF operate the first switch, a center storage portion for taking out the center value in the temporary storage portion through a second switch to store the same, and a distance measuring portion controlled by the comparison circuit, for ON-OFF operating the second switch after a lapse of a predetermined running distance upon ON-operation of the first switch, the aforesaid center storage portion including an integration circuit having a resistor and a capacitor.The device can reliably, electrically take out only the substantially effective change in the steering angle in a vehicle, so that various vehicle controls can be effectively performed.