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    DRAM access method and a DRAM controller using the same
    63.
    发明授权
    DRAM access method and a DRAM controller using the same 失效
    DRAM访问方法和使用其的DRAM控制器

    公开(公告)号：US06336162B1

    公开(公告)日：2002-01-01

    申请号：US09258366

    申请日：1999-02-26

    申请人： Makoto Ueda

    发明人： Makoto Ueda

    IPC分类号： G06F1200

    CPC分类号： G06F12/0215

    摘要： A method for accessing to a DRAM and a DRAM controller of the same, which enables a high speed DRAM access and a DRAM controller. Provided is an accessing method to a DRAM, which comprises the steps of detecting an access type to the DRAM; and changing an access mode depending on the detected access type. Furthermore, provided is an accessing method to a DRAM which comprises the steps of detecting whether a currently accessed row address and an address lastly accessed; and changing an access mode depending on an existence of the coincidence of the detected row addresses.

    摘要翻译： 一种用于访问其DRAM和DRAM控制器的方法，其实现了高速DRAM访问和DRAM控制器。提供了一种对DRAM的访问方法，其包括以下步骤：检测对DRAM的访问类型; 以及根据检测到的访问类型改变访问模式。 此外，提供了一种对DRAM的访问方法，其包括以下步骤：检测当前访问的行地址和最后访问的地址; 以及根据检测到的行地址的一致性的存在来改变访问模式。

    Process for the preparation of optically active 2-halo-1-(substituted phenyl) ethanol
    64.
    发明授权
    Process for the preparation of optically active 2-halo-1-(substituted phenyl) ethanol 失效
    制备光学活性2-卤代-1-（取代苯基）乙醇的方法

    公开(公告)号：US5841001A

    公开(公告)日：1998-11-24

    申请号：US808853

    申请日：1997-02-28

    申请人： Ken Tanaka ,  Mari Yasuda ,  Makoto Ueda

    发明人： Ken Tanaka ,  Mari Yasuda ,  Makoto Ueda

    IPC分类号： C07C213/04 ,  C07D301/26 ,  C07D303/08 ,  C12P7/22 ,  C12P41/00 ,  C07C209/02 ,  C07C33/20 ,  C07C33/34

    CPC分类号： C07C213/04 ,  C07D301/26 ,  C07D303/08 ,  C12P41/004 ,  C12P7/22

    摘要： The present invention provides an industrially advantageous process for the preparation of an optically active 2-halo-1-(substituted phenyl)ethanol useful as medicines, agricultural chemicals or as intermediates thereof; and a simple process for the preparation of an optically active substituted styrene oxide or 2-amino-1-(substituted phenyl)ethanol useful as medicines, agricultural chemicals or intermediates thereof. A 2-halo-1-(substituted phenyl)ethanol represented by the following general formula (I) is allowed to contact, in the presence of a carboxylic anhydride, with an enzyme stereoselectively catalyzing ester interchange to produce an optically active 2-halo-1-(substituted phenyl)ethanol: ##STR1## (wherein X represents a chlorine atom or a bromine atom, and R.sup.1, R.sup.2 and R.sup.3 may be the same or different and each represent a hydrogen atom, a halogen atom, a C.sub.1-5 alkyl group, a C.sub.1-5 haloalkyl group, a C.sub.1-5 alkoxy group, a cyano group or a nitro group, with the proviso that when two of R.sup.1, R.sup.2 and R.sup.3 are alkyl groups or alkoxy groups, they may be combined together to form a ring and that all of R.sup.1, R.sup.2 and R.sup.3 are not hydrogen atoms at the same time).

    摘要翻译： 本发明提供用于制备用作药物，农药或其中间体的光学活性2-卤代-1-（取代苯基）乙醇的工业上有利的方法; 以及用作制备用作药物，农药或其中间体的光学活性取代的氧化苯乙烯或2-氨基-1-（取代的苯基）乙醇的简单方法。 使由以下通式（I）表示的2-卤代-1-（取代的苯基）乙醇在羧酸酐的存在下与酶立体选择性催化酯交换反应以产生光学活性的2-卤代 - 1-（取代苯基）乙醇：（I）（其中X表示氯原子或溴原子，R 1，R 2和R 3可以相同或不同，表示氢原子，卤素原子， C 1-5烷基，C 1-5卤代烷基，C 1-5烷氧基，氰基或硝基，条件是当R 1，R 2和R 3中的两个是烷基或烷氧基时，它们可以是 组合在一起形成环，并且所有的R 1，R 2和R 3不同时为氢原子）。

    Method for producing 3-hydroxy nitrogen-containing six-membered cylic compound
    65.
    发明授权
    Method for producing 3-hydroxy nitrogen-containing six-membered cylic compound 失效
    制备3-羟基含氮六元环化合物的方法

    公开(公告)号：US5763232A

    公开(公告)日：1998-06-09

    申请号：US798919

    申请日：1997-02-12

    申请人： Takeshi Sakamoto ,  Yukie Takai ,  Reiko Sashida ,  Makoto Ueda ,  Toru Nagasawa

    发明人： Takeshi Sakamoto ,  Yukie Takai ,  Reiko Sashida ,  Makoto Ueda ,  Toru Nagasawa

    IPC分类号： C12P17/12

    CPC分类号： C12P17/12 ,  Y10S435/822 ,  Y10S435/88

    摘要： A method for producing a 3-hydroxy nitrogen-containing six-membered cyclic compound is provided. Namely, microbial cells of a microorganism and/or a preparation obtained from the microbial cells is allowed to act on a nicotinic acid derivative or a 2-pyrazinecarboxylic acid derivative represented by the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 may be the same or different, representing hydrogen atom, halogen atom, hydroxyl group, amino group, carboxyl group, cyano group, oxime group, or alkyl group having a number of carbon atom or atoms of 1 to 5 respectively, and A represents carbon atom or nitrogen atom, the microbial cells and/or the preparation obtained from the microbial cells having an ability to perform hydroxylation of the nicotinic acid derivative or the 2-pyrazinecarboxylic acid derivative accompanied by decarboxylation of carboxyl group.

    摘要翻译： 提供了制备3-羟基含氮六元环化合物的方法。 即，使微生物的微生物细胞和/或从微生物细胞获得的制剂作用于由以下通式表示的烟酸衍生物或2-吡嗪羧酸衍生物：其中R1和R2可以是 分别代表碳原子数为1〜5的氢原子，卤原子，羟基，氨基，羧基，氰基，肟基或烷基，A表示碳原子或氮原子 原子，微生物细胞和/或从具有伴随羧基脱羧作用的烟酸衍生物或2-吡嗪羧酸衍生物羟基化的能力的微生物细胞得到的制剂。

    Process tolerant delay circuit
    66.
    发明授权
    Process tolerant delay circuit 失效
    过程容忍延迟电路

    公开(公告)号：US5548237A

    公开(公告)日：1996-08-20

    申请号：US402280

    申请日：1995-03-10

    申请人： Joseph A. Iadanza ,  Makoto Ueda

    发明人： Joseph A. Iadanza ,  Makoto Ueda

    IPC分类号： H03H11/26 ,  H03K5/13 ,  H03K19/0948

    CPC分类号： H03H11/26 ,  H03K5/133

    摘要： A process tolerant delay circuit includes a plurality of inverters that receive an input signal and provide an output signal related to the input signal but including a propagation delay of the plurality of inverters. At least one inverter comprises FETs of minimum channel lengths dependent upon a fabrication process by which the circuit was made. Accordingly, the plurality of inverters have a propagation delay dependent upon the fabrication process. A delay compensation device receives the output signal of the inverters and provides a compensated output signal related to the received signal but including a variable delay established in accordance with a control signal. A process sense stack provides the control signal only during a transition of the input signal, and with a value dependent upon a channel length of a FET device thereof. Thus, the plurality of inverters and delay compensation device operate together, per the control signal of the process sense stack, to provide a circuit capable of compensating for process degradations in order to provide a given delay in accordance with variations in the fabrication process by which they were made.

    摘要翻译： 过程容忍延迟电路包括多个反相器，其接收输入信号并提供与输入信号有关的输出信号，但包括多个逆变器的传播延迟。 至少一个逆变器包括取决于制造电路的制造过程的最小通道长度的FET。 因此，多个反相器具有取决于制造工艺的传播延迟。 延迟补偿装置接收反相器的输出信号，并提供与接收信号有关的补偿输出信号，但包括根据控制信号建立的可变延迟。 过程检测堆栈仅在输入信号的转变期间提供控制信号，并且具有取决于其FET器件的通道长度的值。 因此，多个逆变器和延迟补偿装置根据过程感测堆的控制信号一起工作，以提供能够补偿过程劣化的电路，以便根据制造过程中的变化提供给定的延迟 他们被制造。

    Fuel assembly for nuclear reactor
    68.
    发明授权
    Fuel assembly for nuclear reactor 失效
    核反应堆燃料组件

    公开(公告)号：US5068082A

    公开(公告)日：1991-11-26

    申请号：US219346

    申请日：1988-07-15

    申请人： Makoto Ueda ,  Koichi Sakurada ,  Shungo Sakurai ,  Ritsuo Yoshioka ,  Shunsuke Ogiya ,  Mamoru Nagano

    发明人： Makoto Ueda ,  Koichi Sakurada ,  Shungo Sakurai ,  Ritsuo Yoshioka ,  Shunsuke Ogiya ,  Mamoru Nagano

    IPC分类号： G21C3/18 ,  G21C3/322 ,  G21C3/326 ,  G21C17/10

    CPC分类号： G21C17/10 ,  G21C3/18 ,  G21C3/322 ,  G21C3/326 ,  Y02E30/38

    摘要： A fuel assembly for a nuclear reactor includes a number of fuel rods filled with a fuel material. A plurality of fuel rods have a partial effective fuel area filled with a fuel material and has a portion in which enrichment of a fissile nuclide is significantly reduced or the fissile nuclide does not exist at all on an axial level including a reactor shut-down zone at which subcriticality becomes small during a reactor operation period. The other fuel rods are filled with the fuel material throughout the entire axial length thereof. The first mentioned fuel rod may be provided with a partially interposed zone or may be constructed by a fuel rod having a length shorter than that of the other fuel rod. The tube means may be arranged in the fuel assembly so as to pass the moderator therethrough.

    摘要翻译： 用于核反应堆的燃料组件包括多个充满燃料的燃料棒。 多个燃料棒具有填充有燃料的部分有效的燃料区域，并且具有显着减少易裂变核素的富集的部分或者在包括反应堆关闭区域的轴向上完全不存在易裂变核素 在反应堆运行期间亚临界度变小。 其他燃料棒在其整个轴向长度处填充有燃料材料。 第一个提到的燃料棒可以设置有部分插入的区域，或者可以由具有比其他燃料棒的长度短的燃料棒构成。 管装置可以布置在燃料组件中以便使调节剂通过。

    Control blade for nuclear reactor
    70.
    发明授权
    Control blade for nuclear reactor 失效
    核反应堆控制刀片

    公开(公告)号：US4876060A

    公开(公告)日：1989-10-24

    申请号：US68190

    申请日：1987-06-30

    申请人： Ritsuo Yoshioka ,  Makoto Ueda ,  Yoichi Motora ,  Mitsuharu Nakamura

    发明人： Ritsuo Yoshioka ,  Makoto Ueda ,  Yoichi Motora ,  Mitsuharu Nakamura

    IPC分类号： G21C7/113

    CPC分类号： G21C7/113 ,  G21Y2002/103 ,  G21Y2002/30 ,  G21Y2002/301 ,  G21Y2004/10 ,  G21Y2004/30 ,  Y02E30/31 ,  Y02E30/39

    摘要： In the field of commercial nuclear reactors, there is an increasing demand for long-life control blades in order to meet the requirements of higher economy and reduction in the disposal of radioactive wastes. A control blade proposed by the invention stands a long use by virtue of the use of a long-life neutron absorber which is typically made of hafnium. Despite the use of hafnium which has a large specific weight (13.3 g/cm.sup.3), the size, shape and weight of the control blade are substantially the same as those of convertional control blades which employ boron carbides B.sub.4 C as the neutron absorber, so that the control blade can be back-fitted in existing boiling water reactors without difficulty. The control blade of this invention is a flux-trap-type control blade in which long-life neutron absorber plates or sheets are arranged to oppose each other in the thicknesswise direction of the wing within the sheath plate such that a water gap is preserved between the opposing neutron absorber plates, so that the weight of the hafnium, which occupies most part of the total weight of the control blade, is reduced by an amount corresponding to the volume of the water gap. The thickness of the neutron absorber plates or sheets is increased at the upper portion of the control blade where the neutron exposure is specifically high and where a large neutron absorption power or capacity is required for ensuring a sufficient reactor shut-down margin, while the thickness is reduced in other portions so as to increase the size of the water gap. In consequence, the weight of the control blade incorporating heavy hafnium as the neutron absorber is reduced almost to the same level as that of ordinary control blades, without being accompanied by any reduction in the reactivity worth.

    摘要翻译： 在商业核反应堆领域，长寿命控制叶片的需求不断增加，以满足高经济性和放射性废物处理量的减少。 本发明提出的控制叶片由于使用通常由铪制成的长寿命中子吸收器而长期使用。 尽管使用具有大比重（13.3g / cm 3）的铪，但控制叶片的尺寸，形状和重量与使用硼碳化物B4C作为中子吸收体的转化控制叶片的尺寸，形状和重量基本相同，因此 控制叶片可以毫无困难地回装在现有的沸水反应堆中。 本发明的控制叶片是其中长寿命中子吸收器板或片布置成在鞘板内的机翼的厚度方向上彼此相对的通量捕获型控制叶片，使得在 相反的中子吸收器板，使得占据对照叶片总重量的大部分的铪的重量减少相应于水隙体积的量。 中子吸收板或薄板的厚度在控制叶片的上部增加，其中中子暴露特别高，并且需要大的中子吸收能力或容量以确保足够的反应堆停机裕度，而厚度 在其他部分被减少以增加水隙的尺寸。 因此，将重铪作为中子吸收剂的控制叶片的重量降低到几乎与普通对照叶片相同的水平，而不伴随着反应性价值的降低。