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    • 1. 发明授权
    • Radar device and control method of radar device
    • 雷达装置雷达装置及其控制方法
    • US07907084B2
    • 2011-03-15
    • US12404519
    • 2009-03-16
    • Takahiro SekiguchiIchiro Seto
    • Takahiro SekiguchiIchiro Seto
    • G01S13/38
    • G01S13/34G01S7/354G01S13/583G01S2007/356
    • This radar device includes: a transmitter to transmit a transmitting signal whose frequency is periodically increased/decreased at a predetermined rate of change; a mixer to generate a beat signal by multiplying a received signal being transmitted by the transmitter and reflected back from an object to be detected and the transmitting signal; a frequency detector to detect a frequency of the beat signal; and a controller to control the rate of change of the frequency of the transmitting signal so that the frequency of the beat signal detected by the frequency detector becomes equal to or larger than a cut-off frequency of a flicker noise caused by the mixer.
    • 该雷达装置包括:发送器,用于以预定的变化率周期性地增加/减少频率的发送信号; 混频器,用于通过将由发送器发送并从被检测对象反射的接收信号与发送信号相乘来产生拍频信号; 频率检测器,用于检测拍频信号的频率; 以及控制器,用于控制发送信号的频率变化率,使得由频率检测器检测的拍频的频率变为等于或大于由混频器引起的闪烁噪声的截止频率。
    • 5. 发明授权
    • Magnetic resonance imaging apparatus having controller that sets carrier frequencies outside detected interference bands
    • 具有控制器的磁共振成像设备,其将载波频率设置在检测到的干扰频带
    • US08643362B2
    • 2014-02-04
    • US13048314
    • 2011-03-15
    • Takahiro SekiguchiKoji AkitaToshiyuki NakanishiKazuya OkamotoSojuro Kato
    • Takahiro SekiguchiKoji AkitaToshiyuki NakanishiKazuya OkamotoSojuro Kato
    • G01R33/44
    • G01R33/3692G01R33/3607
    • According to one embodiment, a apparatus includes a coil, a clock generator, an echo transmitter, a carrier generator, a clock transmitter, a regenerator, an receiver, a reconstructor, a detector, and a controller. The echo transmitter generates and transmits an echo transmission signal synchronously with a clock signal generated by the clock generator to wirelessly transmit an echo signal output from the col. The carrier generator generates a carrier signal have a frequency within a variable range. The clock transmitter wirelessly transmits a clock transmission signal. The regenerator regenerates the clock signal based on the transmitted clock transmission signal. The receiver extracts the echo signal synchronously with the regenerated clock signal from the transmitted echo transmission signal. The detector detects a frequency of an interference wave. The controller controls the carrier generator to generate the carrier signal having a frequency which comparatively small interference with respect to the detected frequency.
    • 根据一个实施例,一种装置包括线圈,时钟发生器,回波发射器,载波发生器,时钟发射器,再生器,接收器,重建器,检测器和控制器。 回波发射机与由时钟发生器产生的时钟信号同步地生成和发送回波发送信号,以无线地发送从该列输出的回波信号。 载波发生器产生具有可变范围内的频率的载波信号。 时钟发射机无线传输时钟传输信号。 再生器基于发送的时钟传输信号再生时钟信号。 接收机从发送的回波发送信号中与再生的时钟信号同步地提取回波信号。 检测器检测到干扰波的频率。 控制器控制载波发生器以产生具有相对于检测到的频率具有相对小的干扰的频率的载波信号。
    • 8. 发明申请
    • POLYMERIZABLE MONOMER, POLYMERIZABLE COMPOSITION, AND DENTAL MATERIAL
    • 可聚合单体,可聚合组合物和牙科材料
    • US20100130682A1
    • 2010-05-27
    • US12523554
    • 2008-01-16
    • Ai HinamotoHiroshige IshinoTakahiro SekiguchiKoichi OkadaMitsuru TakeiNaoki Nishigaki
    • Ai HinamotoHiroshige IshinoTakahiro SekiguchiKoichi OkadaMitsuru TakeiNaoki Nishigaki
    • C08L33/10C07C69/73C08F230/02
    • A61K6/0023A61K6/083C08F20/10C08F20/28C08F220/26C08L33/04C08L33/26
    • The present invention provides a polymerizable composition that exhibits excellent adhesive properties to a tooth structure (particularly dentin) when applied as a dental material, and a polymerizable monomer that is used as a component of the polymerizable composition. The present invention is a polymerizable monomer (A) that is a compound having at least two polymerizable groups. The polymerizable monomer (A) has a retention time of 7 minutes to 30 minutes in a high-performance liquid chromatography (HPLC) measurement conducted under a condition in which a column with an inner diameter of 3.9 mm and a length of 300 mm, packed with a C18 packing material having been crushed to have an average particle size of 10 μm and a pore size of 125 angstroms, is used, an eluent is a mixed solvent of methanol and water contained at a ratio of 3:7, a flow rate is 1.0 mL/minute, a measurement temperature is 50° C., a sample injection volume is 10 μL, and a dead volume from a sample inlet to a detection point excluding the column is 87 μL. The present invention also is a composition containing the polymerizable monomer (A).
    • 本发明提供了当作为牙科材料使用时,对牙齿结构(特别是牙本质)表现出优异的粘合性的可聚合组合物和用作可聚合组合物的组分的可聚合单体。 本发明是具有至少两个可聚合基团的化合物的可聚合单体(A)。 可聚合单体(A)在内径为3.9mm,长度为300mm的柱的条件下进行的高效液相色谱(HPLC)测定中的保留时间为7分钟〜30分钟,包装 使用已经粉碎至平均粒径为10μm,孔径为125埃的C18填充材料,洗脱液为甲醇与水的比例为3:7的混合溶剂,流速 为1.0mL /分钟,测定温度为50℃,样品注入体积为10μL,从样品入口到除柱外的检测点的死体积为87μL。 本发明也是含有聚合性单体(A)的组合物。
    • 9. 发明申请
    • MAGNETIC RESONANCE IMAGING APPARATUS
    • 磁共振成像装置
    • US20100117649A1
    • 2010-05-13
    • US12614943
    • 2009-11-09
    • Toshiyuki NakanishiKoji AkitaHideo KasamiTakahiro Sekiguchi
    • Toshiyuki NakanishiKoji AkitaHideo KasamiTakahiro Sekiguchi
    • G01R33/44
    • G01R33/3692G01R33/3607G01R33/3621
    • An apparatus including a probe unit and a control/imaging unit, the probe unit including a converter converting a sampled magnetic-resonance signal into a digital signal, a first transmitter converting the digital signal into a first-radio signal, a first receiver receiving a second-radio signal, and performing detection on the second-radio signal to obtain a first-received signal, and a clock-regeneration unit regenerating a clock component from the first-received signal to generate a regenerated-clock signal, the control/imaging unit including a second-receiver receiving the first-radio signal to obtain a second-received signal, a data processor performing data processing on the second-received signal in synchronism with a reference-clock signal to obtain a video signal, and a second transmitter including a modulator modulating a carrier wave using the reference-clock signal, the second transmitter converting the reference-clock signal into the second-radio signal and transmitting the second-radio signal through the second-wireless channel.
    • 一种包括探针单元和控制/成像单元的装置,所述探针单元包括将采样的磁共振信号转换为数字信号的转换器,将所述数字信号转换为第一无线电信号的第一发射机, 第二无线电信号,并且对第二无线电信号执行检测以获得第一接收信号,以及时钟再生单元,从第一接收信号再生时钟分量以产生再生时钟信号,控制/成像 单元,包括接收第一无线电信号的第二接收器以获得第二接收信号;数据处理器,与参考时钟信号同步地对第二接收信号执行数据处理,以获得视频信号;以及第二发射机 包括使用参考时钟信号调制载波的调制器,第二发射机将参考时钟信号转换成第二无线电信号并发送第 第二无线电信号通过第二无线信道。
    • 10. 发明申请
    • CURABLE COMPOSITION FOR DENTAL PURPOSES
    • 用于牙科用途的可固化组合物
    • US20100105802A1
    • 2010-04-29
    • US12525323
    • 2008-01-24
    • Yoshiko KuboeTakahiro Sekiguchi
    • Yoshiko KuboeTakahiro Sekiguchi
    • A61K6/08
    • A61L26/0047A61K6/0008A61K6/0088A61K6/083C08L33/10
    • A curable composition for dental use, containing a polymerizable monomer, inorganic particles (A) having irregular shapes and an average particle size of from 1.0 to 5.0 μm, wherein the inorganic particles (A) are surface-treated with a silane coupling agent (a) represented by the formula (I): wherein R1 is a hydrogen atom or a methyl group, R2 is a hydrolyzable group, R3 is a hydrocarbon group having 1 to 6 carbon atoms, X is an oxygen or sulfur atom, p is 2 or 3, and q is an integer of from 8 to 13, and inorganic particles (B) having irregular shapes and/or spherical or nearly spherical shapes, and an average particle size of from 0.01 to 0.10 μm, wherein the inorganic particles (B) are surface-treated with a silane coupling agent (b) represented in the same manner as in the silane coupling agent (a) except that q in the formula (I) is an integer of from 1 to 6, wherein the inorganic particles (A) and the inorganic particles (B) are contained in amounts of from 85 to 98% by weight and from 2 to 15% by weight, respectively, of the entire amount of the inorganic particles. The curable composition for dental use of the present invention can be suitably used as a material capable of substituting a part or all of a natural tooth in the field of dental therapy.
    • 一种牙科用固化性组合物,含有聚合性单体,不规则形状的无机粒子(A),平均粒径为1.0〜5.0μm,其中无机粒子(A)用硅烷偶联剂( )由式(I)表示:其中R1是氢原子或甲基,R2是可水解基团,R3是具有1至6个碳原子的烃基,X是氧或硫原子,p是2或 3,q为8〜13的整数,以及不规则形状和/或球形或近似球形的平均粒径为0.01〜0.10μm的无机粒子(B),其中无机粒子(B) 以与硅烷偶联剂(a)相同的方式表示的硅烷偶联剂(b)进行表面处理,除了式(I)中的q为1〜6的整数,其中无机颗粒(A ),无机粒子(B)的含量为85〜98重量% 和2〜15重量%的无机粒子的总量。 本发明的牙科用固化性组合物可以适当地用作能够代替牙科治疗领域中的部分或全部天然牙齿的材料。