NOVEL THIENO[3,2-B]PYRIDINE-5(4H)-ONE DERIVATIVE COMPOUND, PREPARATION METHOD THEREOF AND USE THEREOF

    公开(公告)号:US20210171539A1

    公开(公告)日:2021-06-10

    申请号:US16768251

    申请日:2017-12-27

    Abstract: The present invention relates to a novel thieno[3,2-b]pyridine-5(4H)-one derivative compound, a preparation method thereof, and a use thereof. The novel thieno[3,2-b]pyridine-5(4H)-one derivative compound according to the present invention is synthesized via an aza-[3+3] cyclization addition reaction using BOP, wherein the compound is obtained by synthesizing a 4-arylthiophen-3-amine in which aryl groups such as 4-piperidyl-C6H4, 4-pyrrolidyl-C6H4, 4-MeOC6H4, 3,4,5-(MeO)3C6H4, C6H5, 4-C6H5C6H4, and 4-F3COC6H4 are introduced via a synthesis process by a bromination reaction, a hydrolysis reaction, a decarboxylation reaction, and a Suzuki coupling reaction of methyl 3-aminothiophene carboxylate, and by synthesizing 4-arylthiophen-3-amine and mono-methyl fumarate via a formal aza-[3+3] cyclization addition reaction using BOP and conjugation. Accordingly, novel thieno[3,2-b]pyridine-5(4H)-one derivative compounds according to the present invention have fluorescence properties with a wide range of emission wavelengths and thus may be utilized in various industrial fields such as physics, chemistry, and biomedical research.

    UNDERWATER TRENCHER HAVING SUBMARINE CABLE BURYING APPARATUS

    公开(公告)号:US20200080283A1

    公开(公告)日:2020-03-12

    申请号:US16250617

    申请日:2019-01-17

    Abstract: The underwater trencher includes an underwater moving body, and a trench digger provided in the underwater moving body by a support plate and a cutter support provided on an upper surface of the underwater moving body; a cable guide member configured to guide the submarine cable to a trench excavated by the trench digger is coupled to the cutter support; and an upwardly opened guide portion of the cable guide member is provided with a depressor configured to press downwards the submarine cable drawn into and guided by the cable guide member or to release a pressing force so as to relax a tensioned state of the submarine cable when tension is generated in the submarine cable.

    Container search system
    28.
    发明授权

    公开(公告)号:US10479621B2

    公开(公告)日:2019-11-19

    申请号:US15576754

    申请日:2017-02-28

    Abstract: The present invention relates to a container search system comprising: a radiation irradiation unit for irradiating radiation to a container to be inspected; a detection unit installed opposite to the radiation irradiation unit to detect radiation having passed through a container; a transfer cart for loading an automobile thereon, on which a container to be inspected is loaded, and travelling along a search path formed between the radiation irradiation unit and the detection unit; and a circulation orbit unit formed to allow the transfer cart to circulate along the search path, wherein a primary side of a linear induction motor for generating a moving magnetic field is formed on either side among the transfer cart and the search path and a secondary-side reaction plate for inducing a secondary eddy current due to the moving magnetic field and generating a linear driving force is formed on the other side thereof. The container search system can transfer a transfer cart according to a linear motor scheme in a radiation search section, and thus can obtain a radiation search image of high quality.

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