Abstract: A quantum key distribution system is provided, including: a sending terminal, a measurement terminal, a receiving terminal, and at least one polarization controller. The sending terminal is configured to generate a quantum optical signal and receive a detection result. The measurement terminal includes a beam splitter and two single-photon detectors, the beam splitter is configured to generate two measurement optical signals based on the quantum optical signal, and the two single-photon detectors are configured to generate the detection result. The receiving terminal is configured to receive the detection result. The at least one polarization controller is provided in the sending terminal, the measurement terminal or the receiving terminal, and performs a polarization processing on the quantum optical signal or the detection result using a target transmittance matrix determined based on the detection result, so as to obtain a polarized quantum optical signal or a polarized detection result.

Abstract: The present invention infers the first-motion polarities using the relative polarities measured from cross-correlations. We demonstrate two real-world applications on two DAS arrays in the manuscript to illustrate the effectiveness of our method and improvements to the focal mechanism inversion.

Abstract: A computer-implemented method useful for performing seismic tomography, including obtaining seismic data comprising distributed acoustic sensing (DAS) data, comprising at least one of P-wave or S-wave travel times from a plurality of seismic events to a plurality of recording stations coupled to a network of optical fibers in a geological structure; and generating tomography data from the DAS data, wherein tomography data is useful for characterizing the geological structure. We employ distributed acoustic sensing data recorded along a 100-km fiber-optic cable traversing the caldera to image its subsurface structure. Our images highlight a definite separation between the shallow hydrothermal system and the large magma chamber located at ˜12 km depth. The combination of the geological evidence with our results shows how fluids exsolved through second boiling provide the source of the observed uplift and seismicity.

Abstract: The disclosure discloses a medicinal and edible dual-purpose composition capable of resisting retinal blue light damage, and a preparation method and application. The medicinal and edible dual-purpose composition capable of resisting retinal blue light damage disclosed by the disclosure includes the following components in parts by weight: 40-60 parts of a microencapsulated nutrient component, 1-3 parts of a sweetening agent, 10-20 parts of microcrystalline cellulose, and 0.5-2 parts of magnesium stearate. The medicinal and edible dual-purpose composition product is simple and quick in preparation.

Abstract: A fingerprint spectrum construction method for a new compound aloe capsule and a fingerprint spectrum includes: (1) taking powder of a new compound aloe capsule, carrying out reflux extraction, adding methanol, carrying out ultrasonic treatment, filtering, and taking a subsequent filtrate as a test solution; dissolving barbaloin, aloe-emodin, indirubin, tryptanthrin, aloesin, and ?-sitosterol in methanol to obtain reference solutions; (2) injecting the test solution and the reference solutions into a high performance liquid chromatograph for gradient elution to obtain a chromatogram of the new compound aloe capsule and chromatograms of the reference solutions, respectively; and (3) labeling chemical components of peaks on the chromatogram of the new compound aloe capsule according to the chromatogram of the new compound aloe capsule and the chromatograms of the reference solutions to obtain a fingerprint spectrum of the new compound aloe capsule.

Abstract: A fingerprint spectrum construction method for Xihuang capsules and a fingerprint spectrum includes: S1: taking contents of a Xihuang capsule, adding a methanol-chloroform-phosphoric acid solution, and carrying out ultrasonic extraction to obtain a Xihuang capsule test solution; S2: dissolving cholic acid, hyodeoxycholic acid, deoxycholic acid, bilirubin, muscone, and myrrhone in ethanol to obtain a mixed standard solution 1; dissolving quassin, 11-carbonyl-?-boswellic acid, 11-carbonyl-?-acetyl-boswellic acid, acetyl-11?-methoxy-?-boswellic acid, and sandaracopimaric acid in methanol to obtain a mixed standard solution 2; S3: respectively carrying out chromatography on the Xihuang capsule test solution and the mixed standard solutions 1 and 2, and recording corresponding chromatograms; and S4: constructing a fingerprint spectrum of the Xihuang capsule according to the chromatogram of the Xihuang capsule test solution and the chromatograms of the mixed standard solutions 1 and 2.

Abstract: A fingerprint spectrum construction method for Xihuang capsules and a fingerprint spectrum includes: S1: taking contents of a Xihuang capsule, adding a methanol-chloroform-phosphoric acid solution, and carrying out ultrasonic extraction to obtain a Xihuang capsule test solution; S2: dissolving cholic acid, hyodeoxycholic acid, deoxycholic acid, bilirubin, muscone, and myrrhone in ethanol to obtain a mixed standard solution 1; dissolving quassin, 11-carbonyl-?-boswellic acid, 11-carbonyl-?-acetyl-boswellic acid, acetyl-11?-methoxy-?-boswellic acid, and sandaracopimaric acid in methanol to obtain a mixed standard solution 2; S3: respectively carrying out chromatography on the Xihuang capsule test solution and the mixed standard solutions 1 and 2, and recording corresponding chromatograms; and S4: constructing a fingerprint spectrum of the Xihuang capsule according to the chromatogram of the Xihuang capsule test solution and the chromatograms of the mixed standard solutions 1 and 2.

Abstract: A fingerprint spectrum construction method for a new compound aloe capsule and a fingerprint spectrum includes: (1) taking powder of a new compound aloe capsule, carrying out reflux extraction, adding methanol, carrying out ultrasonic treatment, filtering, and taking a subsequent filtrate as a test solution; dissolving barbaloin, aloe-emodin, indirubin, tryptanthrin, aloesin, and ?-sitosterol in methanol to obtain reference solutions; (2) injecting the test solution and the reference solutions into a high performance liquid chromatograph for gradient elution to obtain a chromatogram of the new compound aloe capsule and chromatograms of the reference solutions, respectively; and (3) labeling chemical components of peaks on the chromatogram of the new compound aloe capsule according to the chromatogram of the new compound aloe capsule and the chromatograms of the reference solutions to obtain a fingerprint spectrum of the new compound aloe capsule.

Abstract: The present disclosure provides a quantitative accuracy evaluation method and system for a result of remote sensing inversion. The method includes the following steps: acquiring measured data of a target element content in a preset zone; acquiring, based on acquired remote sensing image reflectivity of the preset zone, predicted data of the target element content in the preset zone by a remote sensing inversion model; and conducting comprehensive index evaluation of abnormal feature similarity between the measured data and the predicted data. The technical solution adopted in the present disclosure can solve the problem with quantitative accuracy evaluation of remote sensing inversion that inverted object content and measured object content are distributed inconsistently in space.

Abstract: A system for geochemical characterization of a sample includes a closed reaction chamber configured to perform a high temperature and high-pressure acid digestion test, a spectrometry system configured for performing trace element analysis, and a controller. The controller includes a processor and a memory. The memory includes instructions stored thereon, which, when executed by the processor, cause the system to mineralize the sample based on a microwave process using the closed reaction chamber, and perform trace element analysis on the mineralized sample by the spectrometry system.

Abstract: A system for geochemical characterization of a sample includes a closed reaction chamber configured to perform a high temperature and high-pressure acid digestion test, a spectrometry system configured for performing trace element analysis, and a controller. The controller includes a processor and a memory. The memory includes instructions stored thereon, which, when executed by the processor, cause the system to mineralize the sample based on a microwave process using the closed reaction chamber, and perform trace element analysis on the mineralized sample by the spectrometry system.

Abstract: An energy-saving lighting masonry module is disclosed. The module is mainly composed of a structural part, a thermal insulation part and a light transmitting part. A lens on an inlet end of a refraction region of the light transmitting part changes an optical path so that the light enters a total reflection light channel, and a lens on an outlet end restores the optical path to provide indoor illumination. The present invention uses the lenses and light guide to change the optical path to compress the light channel. The insulation material and optical devices in the energy-saving lighting masonry module are combined to form a block to achieve the combination mode of dual purposes of lighting and energy saving.