公开(公告)号：US06683894B1

公开(公告)日：2004-01-27

申请号：US09552579

申请日：2000-04-19

申请人： Hyo Sang Lee ,  Coorg R. Prasad ,  Jun Zhang

发明人： Hyo Sang Lee ,  Coorg R. Prasad ,  Jun Zhang

IPC分类号： H01S310

CPC分类号： H01J49/164 ,  H01S3/0612 ,  H01S3/09408 ,  H01S3/09415 ,  H01S3/117 ,  H01S3/1618 ,  H01S3/1643

摘要： A diode pumped solid state laser/OPO system widely tunable in mid infrared spectrum for infrared matrix assisted laser desorption/ionization (MALDI) mass spectroscopy is disclosed. Up to a few tens of milli-Joule, short pulse, tunable near infrared laser pulse is generated from an all solid state laser at a high pulse repetition rate up to one kHz. The tunable near-infrared laser pumps a Quasi-Phase Matching (QPM) OPO system to further shift the wavelength to the mid-IR range and to broaden the tuning range to as much as 3 &mgr;m to effectively generate a widely tunable spectral output. The wide range tuning of the infrared output is accomplished by a narrow range tuning of the pump laser. The pump laser output is generated by a diode pumped tunable solid state laser module using either a Yb:YAG crystal or any other efficient tunable laser crystals. The wavelength range (2-5 &mgr;m) covered by the solid state laser system is optimum for MALDI applications. This wavelength range is especially beneficial for large mass DNA analysis. A light detection and ranging system is also disclosed.

摘要翻译： 公开了用于红外矩阵辅助激光解吸/电离（MALDI）质谱的中红外光谱广泛可调谐的二极管泵浦固态激光器/ OPO系统。 高达几十毫焦耳，短脉冲，可调谐的近红外激光脉冲从全固态激光器以高达1kHz的高脉冲重复频率产生。 可调谐近红外激光泵浦准相位匹配（QPM）OPO系统，以进一步将波长转移到中红外范围，并将调谐范围扩展到3um以有效地产生广泛可调谐的光谱输出。 通过泵浦激光器的窄范围调谐来实现红外输出的宽范围调谐。 泵浦激光器输出由使用Yb：YAG晶体或任何其他有效的可调谐激光晶体的二极管泵浦可调谐固态激光器模块产生。 由固体激光系统覆盖的波长范围（2-5μm）对于MALDI应用是最佳的。 该波长范围对于大质量DNA分析特别有益。 还公开了光检测和测距系统。

公开(公告)号：US06518569B1

公开(公告)日：2003-02-11

申请号：US09591536

申请日：2000-06-09

申请人： Jun Zhang ,  Benjamin D. Gardner ,  Christie G. Enke

发明人： Jun Zhang ,  Benjamin D. Gardner ,  Christie G. Enke

IPC分类号： H01J4900

CPC分类号： H01J49/405

摘要： Novel ion mirrors comprising, in a preferred embodiment, three cylinders, rectangles or truncated cones to improve the resolving power in the time-of-flight mass spectrometers over broad ion kinetic energy ranges. The achieved electric field is non-linear along the mirror axis and relatively homogeneous in the mirror off-axis directions. Combined with dimension optimization, in a preferred embodiment, the adjustment of only two parameters of element voltages can yield preferred electric field distribution to fit different ion optical systems.

摘要翻译： 在一个优选实施例中，新型离子镜包括三个圆柱体，矩形或截锥体，以在宽离子动能范围内提高飞行时间质谱仪中的分辨能力。 实现的电场沿着镜像轴是非线性的，并且在反射镜离轴方向上相对均匀。 结合尺寸优化，在优选实施例中，仅调整元件电压的两个参数可以产生优选的电场分布以配合不同的离子光学系统。

公开(公告)号：US06490183B2

公开(公告)日：2002-12-03

申请号：US09940971

申请日：2001-08-28

申请人： Jun Zhang

发明人： Jun Zhang

IPC分类号： H02M704

CPC分类号： H02M3/33592 ,  Y02B70/1475

摘要： The present invention provides to a method and apparatus for minimizing or preventing negative current build up in DC-DC converters with synchronous rectification. The method turns the first synchronous rectifier off when the negative current is present in the first secondary winding and the first synchronous rectifier is on, and turns the second synchronous rectifier off when the negative current is present in the second secondary winding and the second synchronous rectifier is on.

摘要翻译： 本发明提供一种用于最小化或防止具有同步整流的DC-DC转换器中的负电流累积的方法和装置。 当第一次级绕组中存在负电流并且第一同步整流器导通时，该方法断开第一同步整流器，并且当第二次级绕组和第二同步整流器中存在负电流时，使第二同步整流器断开 是在。

公开(公告)号：US20220400824A1

公开(公告)日：2022-12-22

申请号：US17620751

申请日：2019-12-23

申请人： Jun Zhang

发明人： Jun Zhang

IPC分类号： A45C11/00 ,  A45C13/00 ,  A45C13/10

摘要： A three-proof earbuds box protective case includes a bottom housing and a top cover mounted at the upper end of the bottom housing and can be opened or closed. One side of the bottom housing and one side of the top cover are hinged. A waterproof and dustproof ring is provided between the bottom housing and the top cover. The lower end of the bottom housing has a first shockproof flexible rubber having a first shockproof part fixed to the lower end surface of the bottom housing, and a second shockproof part fixed to the inner wall of the bottom housing. The upper end of the top cover has a second shockproof flexible rubber having a third shockproof part fixed to the upper end surface of the top cover, and a fourth shockproof part fixed to the inner wall of the top cover.

公开(公告)号：US11224290B1

公开(公告)日：2022-01-18

申请号：US17032697

申请日：2020-09-25

申请人： Jun Zhang

发明人： Jun Zhang

IPC分类号： A47B81/02 ,  B08B13/00 ,  A46B17/08 ,  F16B1/00 ,  A47B95/00 ,  A47J47/20 ,  A47G29/08

摘要： A multifunctional draining rack, which relates to the technical field of draining appliances, includes: a draining rack body provided with a storage space; a cleaning brush holder detachably assembled on the draining rack body; and a towel hanger rotatably assembled on the draining rack body and used to rotate relative to the draining rack body for folding or in use; and a fixing device detachably assembled on the draining rack body for fixing the draining rack body on the use wall. The use of the above technical solution has the advantages of multiple functions, classified storage, small occupation space, high flexibility of adjustable storage space, diverse installation methods, convenient disassembly and assembly, and good user experience.

公开(公告)号：US10902426B2

公开(公告)日：2021-01-26

申请号：US13367344

申请日：2012-02-06

申请人： Scott M. Zoldi ,  Jun Zhang ,  Yuting Jia

发明人： Scott M. Zoldi ,  Jun Zhang ,  Yuting Jia

IPC分类号： G06Q20/40 ,  G06Q30/00 ,  G06Q40/02

摘要： This document presents multi-layered, self-calibrating analytics for detecting fraud in transaction data without substantial historical data. One or more variables from a set of variables are provided to each of a plurality of self-calibrating models that are implemented by one or more data processors, each of the one or more variables being generated from real-time production data related to the transaction data. The one or more variables are processed according to each of the plurality of self-calibrating models implemented by the one or more data processors to produce a self-calibrating model output for each of the plurality of self-calibrating models. The self-calibrating model output from each of the plurality of self-calibrating models is combined in an output model implemented by one or more data processors. Finally, a fraud score output for the real-time production data is generated from the self-calibrating model output.

公开(公告)号：US20200169016A1

公开(公告)日：2020-05-28

申请号：US16683461

申请日：2019-11-14

申请人： Jun Zhang

发明人： Jun Zhang

IPC分类号： H01R12/70 ,  H01R13/502 ,  H01R13/40

摘要： An electrical connector includes: an insulating frame, having an accommodating space to accommodate a chip module; a metal sheet, fixed to the insulating frame and provided with multiple positioning slots; and multiple insulating blocks respectively positioned correspondingly in the positioning slots movably in a vertical direction. The metal sheet has a first stopping portion and a second stopping portion on a periphery of each positioning slot. Each insulating block is formed separately from the insulating frame and accommodates multiple conductive terminals, and has a first protruding portion located above the first stopping portion, and a second protruding portion located below the second stopping portion, such that the first and second stopping portions restrict the insulating blocks from moving vertically. In the vertical direction, a gap exists between the first protruding portion and the first stopping portion, and a gap exists between the second protruding portion and the second stopping portion.

公开(公告)号：US10087738B2

公开(公告)日：2018-10-02

申请号：US15188372

申请日：2016-06-21

申请人： Jun Zhang

发明人： Jun Zhang

IPC分类号： E21B47/00 ,  G01B7/06

摘要： Various downhole logging tools and methods of using and making the same are disclosed. In one aspect, a downhole logging tool for inspecting a well casing is provided that includes a housing adapted to be supported in the well casing by a support cable. A transmitter is positioned in the housing and operable to generate a magnetic field. Plural receivers are positioned in the housing in circumferentially-spaced apart relation and are operable to sense the magnetic field with azimuthal sensitivity. Electronic circuitry is operatively coupled to the receivers to determine a parameter of the sensed magnetic field and determine a characteristic of the well casing based on the parameter.

公开(公告)号：US09867444B1

公开(公告)日：2018-01-16

申请号：US15199593

申请日：2016-06-30

申请人： Li-Mei Liu ,  Jun Zhang

发明人： Li-Mei Liu ,  Jun Zhang

IPC分类号： B43K5/00 ,  A45D34/04 ,  A46B11/00

CPC分类号： A45D34/042 ,  A45D2200/051 ,  A46B9/005 ,  A46B9/021 ,  A46B11/0041 ,  A46B11/0086 ,  A46B11/0089

摘要： A cosmetic pen includes a hollow cap; a hollow plunger including, on an outer surface, a front annular groove, an annular flange configured to urge against an internal shoulder of the hollow cap, a rear tubular member, and an annular projection; a hollow conic member urging against the annular flange; an applicator; a biasing member put on the tubular member and having a front end urging against the annular projection; a hollow valve put on both the annular projection and the biasing member, the hollow valve including rear outlet ports; a hollow member fastened in the hollow cap; a sealing ring disposed tightly between a front end of the hollow plunger and an inner surface of the hollow conic member; and a pen tube. Airtightness of the pen tube is sound in a closed state.

公开(公告)号：US09678241B2

公开(公告)日：2017-06-13

申请号：US13339856

申请日：2011-12-29

申请人： Jun Zhang

发明人： Jun Zhang

IPC分类号： G01V3/08 ,  E21B47/022 ,  G01V3/28

CPC分类号： G01V3/28 ,  E21B47/02216 ,  G01V3/08

摘要： A downhole magnetic ranging tool includes first and second axially spaced magnetic sources deployed in a downhole tool body. The first and second magnetic sources have magnetic moments that axially opposed one another. A magnetic field sensor is deployed axially between the first and second magnetic sources. The tool may be utilized, for example, in subterranean well twinning, well intercept, and well avoidance operations to obtain a separation distance and dip angle between a drilling well and a target well.