Magnetic recording medium
    121.
    发明授权
    Magnetic recording medium 有权
    磁记录介质

    公开(公告)号:US06254964B1

    公开(公告)日:2001-07-03

    申请号:US09267929

    申请日:1999-03-08

    IPC分类号: G11B0570

    摘要: A magnetic recording medium is disclosed, which comprises a support having thereon a substantially nonmagnetic lower layer and a magnetic layer comprising a ferromagnetic metal powder or a ferromagnetic hexagonal ferrite powder dispersed in a binder formed on the lower layer, which is a magnetic recording medium for recording signals having areal recording density of from 0.17 to 2 G bit/inch2, wherein the coercive force of the magnetic layer is 1,800 Oe or more, the average long axis length of the ferromagnetic metal powder is 0.15 &mgr;m or less, and the average particle size of the ferromagnetic hexagonal ferrite powder is 0.10 &mgr;m or less; or wherein the dry thickness of the magnetic layer is from 0.05 to 0.30 &mgr;m, &phgr;m is from 10.0×10−3 to 1.0×10−3 emu/cm2, and the coercive force of the magnetic layer is 1,800 Oe or more. The object of the present invention is to provide a magnetic recording medium which is markedly improved in electromagnetic characteristics, particularly, high density recording characteristics, and is excellent in durability: and to provide a high capacity magnetic recording medium, in particular, a disc-like magnetic recording medium, having a high recording capacity of from 0.17 to 2 Gbit/inch2.

    摘要翻译: 公开了一种磁记录介质,其包括其上具有基本上非磁性的下层的支撑体和包含分散在形成在下层上的粘合剂中的铁磁性金属粉末或铁磁性六角铁氧体粉末的磁性层,所述粘合剂是用于 具有0.17〜2G比特/英寸2的面密度记录密度的记录信号,其中磁性层的矫顽力为1800Oe以上,强磁性金属粉末的平均长轴长度为0.15μm以下,平均粒子 铁磁六角铁氧体粉末的尺寸为0.10μm以下; 或其中磁性层的干厚度为0.05至0.30μm,phim为10.0×10 -3至1.0×10 -3 emu / cm 2,并且磁性层的矫顽力为1800Oe以上。 本发明提供一种在电磁特性,特别是高密度记录特性方面显着提高的磁记录介质,并且耐久性优异:并提供高容量磁记录介质,特别是提供一种盘状磁记录介质 具有0.17至2Gbit / inch2的高记录容量。

    Magnetic recording medium
    123.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US6096406A

    公开(公告)日:2000-08-01

    申请号:US113474

    申请日:1998-07-10

    摘要: A magnetic recording medium is described, which comprises a support having thereon in this order from the support side a substantially nonmagnetic lower layer and a magnetic layer comprising a ferromagnetic powder dispersed in a binder, wherein the magnetic layer has a coercive force of 1,800 Oe or more, central plane average surface roughness (Ra) of 5.0 nm or less, and the magnetic layer contains a diamond fine particle having an average particle size of from 0.10 to 1.0 .mu.m in an amount of from 0.01 to 5% by weight based on the ferromagnetic powder.

    摘要翻译: 描述了一种磁记录介质,其包括从支撑侧依次具有基本上非磁性的下层和包含分散在粘合剂中的铁磁性粉末的磁性层的支撑体,其中磁性层具有1,800Oe的矫顽力或 更优选的是,中心面平均表面粗糙度(Ra)为5.0nm以下,磁性层含有平均粒径为0.10〜1.0μm的金刚石微粒,其量为0.01〜5重量%,基于 铁磁粉末。

    Method for measuring ash content of food stuff
    124.
    发明授权
    Method for measuring ash content of food stuff 失效
    测量食物灰分含量的方法

    公开(公告)号:US5976882A

    公开(公告)日:1999-11-02

    申请号:US249167

    申请日:1999-02-12

    摘要: A method for measuring ash content of food stuff is carried out by 1) preparing, with respect to food stuff samples whose ash content values are known, a calibration curve by a non-linear analysis of absorbance values and the known ash content of each sample, the absorbance values being obtained by irradiating light having particular wavelengths containing at least an ultraviolet ray band wavelength, the particular wavelength being specific to organic ingredients well coupled to inorganic ingredients which result in the ash content, and 2) deriving, with respect to a sample whose ash content value is unknown, an ash content value of the sample from absorbance values obtained by irradiating, on the sample, light having the particular wavelengths containing at least the ultraviolet ray band wavelength and from the calibration curve prepared in advance by the non-linear analysis. An apparatus for carrying out the method includes a light source section, a photo detecting section, a storing section for storing the calibration curve, and a calculation section for calculating, with respect to a sample whose ash content value is unknown, the ash content value based on the absorbance values and the calibration curve stored in the storing section. It is possible to speed up the measuring operation and to improve the measuring precision.

    摘要翻译: 通过以下方式进行食品灰分含量测定的方法:1)对于灰分含量已知的食品样品,通过吸光度值的非线性分析和每个样品的已知灰分含量制备校准曲线 通过照射具有至少具有紫外线波长的特定波长的光获得的吸光度值,该特定波长特异于有机成分,其与无机成分良好耦合,导致灰分含量,以及2)相对于 灰分含量未知的样品,样品的灰分含量值,其通过在样品上照射具有至少包含紫外线波段波长的特定波长的光和由非预定制备的校准曲线获得的吸光度值, 线性分析。 用于执行该方法的装置包括光源部分,光检测部分,用于存储校准曲线的存储部分,以及计算部分,用于相对于灰分含量值未知的样本计算灰分含量值 基于存储部分中存储的吸光度值和校准曲线。 可以加快测量操作,提高测量精度。

    PLL synthesizer having a reset circuit
    125.
    发明授权
    PLL synthesizer having a reset circuit 失效
    PLL合成器具有复位电路

    公开(公告)号:US5896066A

    公开(公告)日:1999-04-20

    申请号:US717806

    申请日:1996-09-24

    IPC分类号: H03L7/089 H03L7/183 H03L7/187

    CPC分类号: H03L7/0891 H03L7/183

    摘要: A PLL including a phase comparator, a VCO, and a charge pump further includes a reset circuit. The reset circuit detects whether both of the charge pump transistors are in an ON state, and if so, generates a reset signal which inhibits the UP and DOWN signals generated by the phase comparator. The reset circuit includes first and second detection circuits and a signal generating circuit.

    摘要翻译: 包括相位比较器,VCO和电荷泵的PLL还包括复位电路。 复位电路检测电荷泵晶体管是否处于导通状态,如果是,则产生抑制由相位比较器产生的UP和DOWN信号的复位信号。 复位电路包括第一和第二检测电路和信号发生电路。

    Semicoductor device having a hetero interface with a lowered barrier
    126.
    发明授权
    Semicoductor device having a hetero interface with a lowered barrier 失效
    具有低阻挡层的异质界面的半导体器件

    公开(公告)号:US5821555A

    公开(公告)日:1998-10-13

    申请号:US618823

    申请日:1996-03-20

    IPC分类号: H01L33/00 H01L33/02 H01L29/26

    摘要: A semiconductor device includes a first semiconductor layer formed of first semiconductor, a second semiconductor layer formed on the first semiconductor layer and formed of second semiconductor of a group different from a group to which the first semiconductor belongs, and a third semiconductor layer formed between the first and second semiconductor layers, the third semiconductor layer being one of a layer formed of third semiconductor of the same group as the first semiconductor and having an impurity concentration higher than the first semiconductor layer and a layer formed of fourth semiconductor of the same group as the second semiconductor and having an impurity concentration higher than the second semiconductor layer.

    摘要翻译: 半导体器件包括由第一半导体形成的第一半导体层,形成在第一半导体层上并由不同于第一半导体所属的基团的第二半导体形成的第二半导体层以及形成在第一半导体之间的第三半导体层 第一和第二半导体层,第三半导体层是由与第一半导体相同的组的第三半导体形成的层,其杂质浓度高于第一半导体层,由与第一半导体层相同的第四半导体形成的层 所述第二半导体具有高于所述第二半导体层的杂质浓度。