Abstract: A highly efficient, Z-selective ring-closing metathesis system for the formation of macrocycles using a stereoretentive, ruthenium-based catalyst supported by a dithiolate ligand is reported. This catalyst is demonstrated to be remarkably active as observed in initiation experiments showing complete catalyst initiation at ?20° C. within 10 min. Using easily accessible diene starting materials bearing a Z-olefin moiety, macrocyclization reactions generated products with significantly higher Z-selectivity in appreciably shorter reaction times, in higher yield, and with much lower catalyst loadings than in previously reported systems. Macrocyclic lactones ranging in size from twelve-membered to seventeen-membered rings are synthesized in moderate to high yields (68-79% yield) with excellent Z-selectivity (95%-99% Z).

Abstract: Provided is a capsule endoscope. The capsule endoscope includes: an imaging device configured to perform imaging on a digestive tract in vivo to generate an image; an artificial neural network configured to determine whether there is a lesion area in the image; and a transmitter configured to transmit the image based on a determination result of the artificial neural network.

Abstract: A magnesium modified Y-type molecular sieve has a rare earth oxide content of about 4% to about 11% by weight, a magnesium oxide content of about 0.1% to about 4% by weight, a sodium oxide content of about 0.3% to about 0.8% by weight, a total pore volume of about 0.33 mL/g to about 0.39 mL/g, a percentage of the pore volume of secondary pores having a pore size of 2-100 nm to the total pore volume of the modified Y-type molecular sieve of about 10% to about 30%, a lattice constant of about 2.440 nm to about 2.455 nm, a percentage of non-framework aluminum content to the total aluminum content of the modified Y-type molecular sieve of no more than about 20%, and a lattice collapse temperature of not lower than about 1045° C.

Abstract: Intravascular imaging catheters are provided that include a distal sheath portion having a lumen that is configured to optionally receive a guidewire or an imaging assembly. The distal sheath portion may be configured to have dimensions such that when a guidewire is inserted through the lumen and extends through a distal exit port, the distal sheath portion may be employed as a microcatheter. External tissue may be imaged at a location at or near the distal end of the catheter, enabling, for example, the controlled imaging of a total occlusion, and the positioning of the distal end (and guidewire) within a true lumen associated with a total occlusion. A structural stop may be provided at or near the distal end of the distal sheath portion to prohibit extension of the imaging assembly out of the distal exit port, while permitting the extension of the guidewire through the distal exit port.

Abstract: A temperature regulation system and a temperature regulation method are applicable to a machine tool. The temperature regulation system includes a cooling fluid storage tank, a heating fluid storage tank, an internal circulation subsystem, an external circulation subsystem and a computing unit. The internal circulation subsystem includes a first valve. The external circulation subsystem includes a plurality of flow channels and a second valve and a third valve disposed on the plurality of the flow channels. The computing unit controls the first valve, the second valve and the third valve to switch flow directions of the plurality of the flow channels among the cooling fluid storage tank, the heating fluid storage tank and machine tool. Therefore, a thermal balance of the machine tool can be effectively maintained.

Abstract: The present invention relates to a body insertable device having an outer body being bent; and an inner body positioned inside the outer body, having an accommodation space in which the resource soured is accommodated, and being capable of rotating inside the outer body, wherein a radiation emission direction is continuously adjusted by rotation of the inner body.

Abstract: The present invention provides a mouse with liver damage, having a high degree of damage against the mouse's original hepatocytes while having a uPA gene in a heterozygous form, and a method for efficiently preparing the mouse. Specifically, the method for preparing a mouse with liver damage having the uPA gene in a heterozygous form comprises the following steps of: (i) transforming mouse ES cells with a DNA fragment containing a liver-specific promoter/enhancer and cDNA that encodes a urokinase-type plasminogen activator operably linked under the control thereof; (ii) injecting the transformed mouse ES cells obtained in step (i) into a host embryo; (iii) transplanting the host embryo obtained in step (ii) via the injection of the ES cells into the uterus of a surrogate mother mouse, so as to obtain a chimeric mouse; and (iv) crossing the chimeric mice obtained in step (iii), so as to obtain a transgenic mouse in which the DNA fragment is introduced in a heterozygous form.

Abstract: A modified Y-type molecular sieve has a rare earth oxide content of about 4% to about 12% by weight, a phosphorus content of about 0% to about 10% by weight, a sodium oxide content of no more than about 1.0% by weight, a total pore volume of about 0.36 to 0.48 mL/g, a percentage of the pore volume of secondary pores to the total pore volume of about 20% to about 40%, a lattice constant of about 2.440 nm to about 2.455 nm, a percentage of the non-framework aluminum content to the total aluminum content of no more than about 10%, a lattice collapse temperature of not lower than about 1060° C., and a ratio of Brønsted acid to Lewis acid of no less than about 3.50. The preparation of the molecular sieve includes ion-exchange with rare earth, hydrothermal roasting, gas phase ultra-stabilization, acid treatment, and an optional phosphorus modification.

Abstract: A pyrimidine derivative compound of Chemical Formula 1, an optical isomer thereof, or a pharmaceutically acceptable salt thereof, and a composition for preventing or treating cancer comprising the same as an active ingredient. The pyrimidine derivative compound of Chemical Formula 1, the optical isomer thereof, or the pharmaceutically acceptable salt thereof has an excellent selective inhibitory effect especially against TYRO 3 among TAM receptor inhibitory effects, and thus can be used as an excellent composition of preventing or treating cancer without adverse effects resulting from the inhibition of Axl and Mer.

Abstract: A real-time monitoring apparatus for seafloor deformation during hydrate exploitation, includes a main frame, a detecting device, and a sensing and wireless data transmitting device. The detecting device includes at least two detecting straight rods in different directions; the detecting straight rods are connected to the main frame through the movable sleeves; and at least two fixing supports are configured below each detecting straight rod, perpendicular to and uniformly distributed along the detecting straight rod. A movable lever is configured above each detecting straight rod, the movable lever is connected to the main frame through the lever-fixing rod, and a stretchable and compressible spring is configured at an upper end of the movable lever. The sensing and wireless data transmitting device includes at least two tension and compression force sensors in different directions, a gyroscope sensor, a wireless data transmitter, and a power source, all mounted in the main frame.

Abstract: A mobile signaling management method uses a distributed container with a hierarchical nested structure to process the registration and query of location information of user equipment, including: first user equipment connected to a first network device, to obtain a first network address allocated by the first network device; the first user equipment registering to a first mobility management node binding information between the name of the first user equipment and the first network address, the first mobility management node being a node where the first user equipment is located after movement; the first user equipment updating to a second network device the binding information between the name of the first user equipment and the first network address; and the first user equipment updating to second user equipment at the communication peer end the binding information between the name of the first user equipment and the first network address.

Abstract: The present disclosure relates to the aerospace application field, and provides a method for flying a large balloon. In the method, a constraint apparatus is disposed on a balloon capsule to replace a roller, and the constraint apparatus is released progressively in a release process of the balloon capsule, so that the balloon capsule is released progressively and slowly before rising above a pod. This greatly reduces the impact in a flying process, makes it easier to control a flying status of the balloon capsule, and also makes related operations of onsite staffs simpler and controllable.

Abstract: The present invention discloses a radar target spherical projection method for maritime formation. The method comprises the steps of converting the height of a radar target into an altitude and converting the position of the radar target into a spherical position, can be used for pre-processing radar data, supports multi-platform composite tracking based on a data chain, and contribute to generating a sharable single integrated picture (SIP) among formation members. The present invention can be widely applied to oceanic area formation operations such as coastguard patrol, sea escort, deep sea far sighting and maritime formation fight.

Abstract: A laser cleaning apparatus and a laser cleaning method are furnished, for switching the wavelengths of laser beams furnished by a single laser module using a wavelength switching module and cleaning a test piece using the laser beams having wavelengths and energy suitable for manufacturing needs. The laser cleaning method includes: creating a laser beam; switching the wavelength output by the laser based on process requirements; propagating the laser beam via an optical path propagating module for laser cleaning the test piece; and removing debris. A transfer platform allows movements of the laser beams with respect to the test piece to achieve cleaning of the entire test piece. A control module controls the wavelength switching unit, the laser beam regulating module, and the transfer platform. Total laser cleaning with improved laser cleaning quality is achieved by using these laser beams with the appropriate wavelengths and energy.

Abstract: Features for rechargeable lithium ion batteries, the batteries optionally employing vertically aligned carbon nanotube scaffolding, are described. Methods of manufacture and a solid polymer electrolyte are described for 3-dimensional battery architectures using the vertically aligned carbon nanotubes. Poly(ethylene)oxide bis(azide) and graphene poly(lactic acid) composite coatings are also described for use in such batteries or others.

Abstract: The present invention provides a strain of Pseudozyma churashimaensis RGJ1, which is isolated from a pepper plant and leads to induced systemic resistance against plant pathogens or plant viruses; a microbial preparation for controlling plant diseases or increasing plant yields, including, as an active ingredient, the strain or a culture thereof; a method for preparing the microbial preparation, including a step of culturing the strain; and a method for controlling plant diseases, including a step of performing dipping treatment, soil drenching treatment or spraying treatment onto aerial foliage for a plant seedling with the strain or the culture thereof.

Abstract: A method for cleaning membrane is provided. The method includes, providing a membrane, introducing a thermo-sensitive ionic liquid to contact the membrane and perform a cleaning procedure to collect a cleaning solution, and layering the cleaning solution to form an aqueous layer and an ionic liquid layer at a specific temperature.

Abstract: A chiral catalyst represented by formula (I) is provided. In formula (I), Z?Z1 or Z2, and the combination of Z1 and Z2 in formula (I) includes Y independently includes hydrogen, fluorine, trifluoromethyl, isopropyl, tert-butyl, CmH2m+1 or OCmH2m+1, m=1-10, and n=1-10. A heterogeneous chiral catalyst including the chiral catalyst is also provided.

Abstract: A graft polymer is provided, which includes a polymer backbone with a plurality of hydroxy groups, protection group modified histidine grafted onto the side of the polymer backbone, and hydrophilic polymer having terminal reactive group grafted onto the side of the polymer backbone. The graft polymer coating can be applied to metal material to form a composite material, which can be implanted into an organism to reduce adhesion problems.