BROADBAND OPTICAL PARAMETRIC CHIRPED PULSE AMPLIFIER INSENSITIVE TO TEMPERATURE

    公开(公告)号:US20210044076A1

    公开(公告)日:2021-02-11

    申请号:US16849993

    申请日:2020-04-16

    IPC分类号: H01S3/10 H01S3/108

    摘要: The present disclosure relates to a broadband optical parametric chirped pulse amplifier insensitive to temperature comprises the first pulsed laser, the second pulsed laser, a pulse stretcher and a periodically poled nonlinear crystal. Via the proper arrangement of the non-collinear angles between the transmission directions of the signal light, the pump light and the idler light, to simultaneously satisfy the angular relationship required for constructing the non-collinear phase-matching configuration insensitive to wavelength and that required for constructing the non-collinear phase-matching configuration insensitive to temperature, the optical parametric chirped pulse amplifier not only can realize a broadband parametric amplification of the signal light (insensitive to wavelength), but also can effectively alleviate the phase mismatch in nonlinear crystal resulted from the excessively high local temperature (insensitive to temperature).

    Method of assessing drying depth of cementitious material

    公开(公告)号:US10816535B2

    公开(公告)日:2020-10-27

    申请号:US15867680

    申请日:2018-01-10

    摘要: The present invention relates to the field of material determination or analysis, and provides a method of assessing drying depth of cementitious materials including the following steps: preparing a plurality of cementitious material specimens; drying the cementitious material specimens; conducting electrochemical impedance spectrum measurement on each cementitious material specimen; accordingly determining a model for analyzing the drying depth of the cementitious material specimen. The method of assessing drying depth of the cementitious material provided by the present invention takes the influence of the resistivity changes on the model into consideration, and the drying depth of the cementitious material is reflected and reckoned with regularly changes of the electrochemical parameters, not only increasing the accuracy but also saving much testing labor, time and cost.

    Screen privacy protection method and system for mobile terminal device

    公开(公告)号:US10810326B2

    公开(公告)日:2020-10-20

    申请号:US15735203

    申请日:2017-02-14

    摘要: The present invention provides a screen privacy protection method and system for a mobile terminal device. The screen privacy protection method comprises an environment data acquisition step, a privacy leakage determination step, a determination step and a screen privacy protection step. The present invention has the following advantageous effects: screen privacy can be effectively protected without the addition of hardware, a very good technical effect is achieved, and the screen privacy protection method and system provided by the present invention is worthy of popularization and application.

    File storage method, file search method and file storage system based on public-key encryption with keyword search

    公开(公告)号:US10769107B2

    公开(公告)日:2020-09-08

    申请号:US16162353

    申请日:2018-10-16

    摘要: The invention provides a file storage method, a file search method and a file storage system based on public-key encryption with keyword search. The method comprises: receiving a user file storage request sent from a data possessor, acquiring access control attribute information for access to a user file, security level parameters and a keyword set of the user file, generating a file attribute vector of the user file by means of the access control attribute information and the keyword set, acquiring a public-secret key pair used for encrypting the file attribute vector from a pre-generated key space, encrypting the file attribute vector by means of a public key in the public-secret key pair to obtain a ciphertext corresponding to the file attribute vector, and transmitting the ciphertext corresponding to the file attribute vector and a ciphertext of the user file to a preset storage server.

    Compound I and compound II as well as preparation methods therefor and application thereof

    公开(公告)号:US10711005B2

    公开(公告)日:2020-07-14

    申请号:US15776784

    申请日:2016-11-08

    摘要: Compound I and a compound II as well as preparation methods therefor and use thereof are disclosed. A newly synthesized compound of formula I is capable of stimulating congenital immunity and cellular immunity for tumor resistance while greatly improving the antitumor effect of ethacrynic acid (EA), and thus an integrated synergistic anti-tumor dual-immunity drug design is explored. The immune response mechanism for resisting melanoma of the compound as shown in the formula I is demonstrated. A compound that is as shown in a formula II and is prepared from the compound of formula I and ROR1 by means of covalency markedly slows down the growth of subcutaneously transplanted mammary cancer tumor, such that the immune response mechanism, for treating the mammary cancer, of the compound as shown in the formula II is demonstrated.

    Method for part mobility prediction based on a static snapshot

    公开(公告)号:US10664976B2

    公开(公告)日:2020-05-26

    申请号:US15872001

    申请日:2018-01-16

    发明人: Ruizhen Hu Hui Huang

    摘要: A method for part mobility prediction based on a static snapshot consisting of several steps: constructing mobility units from each 3D model in a set of 3D models with parts segmented according to their motion and grouping all of the mobility units according to their motion type; computing snapshot descriptors for every static snapshot in a mobility unit; learning a snapshot-to-unit distance measure for every motion types of the mobility units; getting the most similar mobility unit and its motion type for a query static snapshot by using the snapshot-to-unit distance measure to select with the minimum distance value; generating multiple motion candidates for a query static snapshot according to the achieved mobility unit and its motion type, sampling the generated motion and getting the best motion parameter for the query static snapshot. This invention can predict the part mobility from a static snapshot of an object.

    ANTIBACTERIAL HYDROPHILIC COMPOUND AND USE THEREOF

    公开(公告)号:US20200093124A1

    公开(公告)日:2020-03-26

    申请号:US16699192

    申请日:2019-11-29

    摘要: The present disclosure provides an antibacterial hydrophilic compound. The antibacterial hydrophilic compound may react, induced by light through a hydrogen abstraction group in the structural formula thereof, with a C—H group and thus bind to a surface of a material having the C—H group (for example, chemical fibers such as polyester, chinlon, and the like; plastics, rubbers, and other similar materials), which can impart a durable antibacterial activity and hydrophilicity to the material. The antibacterial hydrophilic compound has a relatively strong binding force to the surface of the material without damaging the mechanical properties of the raw material. The present disclosure also provides a modified material that is modified by the antibacterial hydrophilic compound.

    SCREEN PRIVACY PROTECTION METHOD AND SYSTEM FOR MOBILE TERMINAL DEVICE

    公开(公告)号:US20200034575A1

    公开(公告)日:2020-01-30

    申请号:US15735203

    申请日:2017-02-14

    摘要: The present invention provides a screen privacy protection method and system for a mobile terminal device. The screen privacy protection method comprises an environment data acquisition step, a privacy leakage determination step, a determination step and a screen privacy protection step. The present invention has the following advantageous effects: screen privacy can be effectively protected without the addition of hardware, a very good technical effect is achieved, and the screen privacy protection method and system provided by the present invention is worthy of popularization and application.