Abstract: Embodiments provide a method to collect aggregate information or usage data quickly and efficiently with minimal lag. Additionally, the system can use this aggregate information internally for improved load balancing, better data placement, optimization, and enhanced debugging. The system can quickly look at aggregate information across a huge amount of data and drill down cheaply because the aggregate information is generated using existing processes. Aggregated statistics storage and collection may be built on top of an LSM tree used to store a persistent index for a cloud storage system. The statistics may also represent the result of an operation (e.g., max, min, sum, average) on selected parameter(s) or attribute(s) of stored data. Aggregate statistics values may be efficiently maintained during index merge and garbage collection processes or any other index management. As delta LSM trees are merged into a base LSM tree, the aggregates are updated in delta fashion.

Abstract: A lighting device includes a polychromatic light source for emitting light in a plurality of colors, a light filter, and an optical element, wherein the light filter and the optical element are sequentially provided in an optical path of the polychromatic light source; a through hole is provided in the light filter, and the through hole has a size smaller than that of light spots of the polychromatic light source reaching the through hole; and the optical element is used for adjusting the light spots. Since the through hole has a size smaller than that of the light spots of the polychromatic light source reaching the through hole, the light filter can block stray light around the light spots such that more uniform portion of the light spots passes through the through hole, thereby improving the light-emitting effect of the lighting device.

Abstract: A transport chute includes an upper slide defining an opening, a lower slide coupled to the upper slide, a pivoting plate pivotably coupled to the upper slide, and a resilient member coupled between the pivoting plate and the lower slide. The pivoting plate is configured to open and close the opening. The resilient member is configured to drive the pivoting plate to close the opening after the opening is opened. A workpiece is transported from the upper slide to the lower slide through the opening.

Abstract: The present disclosure provides a target mounting fixture, including: a target fixing frame for fixing a target, the target fixing frame including a hoisting portion; a target carrier detachably connected to the target fixing frame; and a moving unit connected to the target carrier for moving the target carrier to move the target.

Abstract: One embodiment provides a method comprising receiving metadata comprising univariate time series data for each variable of a multivariate time series. The method comprises, for each variable of the multivariate time series, applying a hybrid and hierarchical model selection process to select an anomaly detection model suitable for the variable based on corresponding univariate time series data for the variable and covariations and interactions between the variable and at least one other variable of the multivariate time series, and detecting an anomaly on the variable utilizing the anomaly detection model selected for the variable. Based on each anomaly detection model selected for each variable of the multivariate time series, the method further comprises performing ensemble learning to determine whether the multivariate time series is anomalous at a particular time point.

Abstract: It discloses an application of a fermentation broth of Potamogeton crispus in the removal of nitrogen in constructed wetlands. The fermentation broth of Potamogeton crispus is prepared by the following method: collecting, draining off and grinding the Potamogeton crispuses, then, placing the grinded Potamogeton crispuses into a fermentation tank, mixing them with domesticated fermented sludge, and then adding water and fermenting the mixed liquor at a constant temperature, removing the residue of the Potamogeton crispuses, and obtaining the prepared fermentation broth of Potamogeton crispus. The present invention also discloses an application of the fermentation broth of Potamogeton crispus in the removal of nitrogen in constructed wetlands.

Abstract: An LED unit module, a light-emitting device, and a light source system. The LED unit module comprises a substrate and an LED chipset arranged on the substrate. The LED chipset comprises at least five LED chips, where the LED chips are in a tight arrangement with each other, and the contour of a light-emitting side of the LED chipset is close to a regular hexagon. The LED chipset comprises LED chips of at least four colors, where the four colors are red, blue, green, and amber. The LED unit module allows for prevention of increased etendue and for uniform mixing of lights.

Abstract: The present disclosure provides a target mounting fixture, including: a target fixing frame for fixing a target, the target fixing frame including a hoisting portion; a target carrier detachably connected to the target fixing frame; and a moving unit connected to the target carrier for moving the target carrier to move the target.

Abstract: A system and method for creating a controlled geyser well with sustained periodical production includes a cap (16) which prevents gas from entering a well tubing (14) while allowing liquid to enter and accumulate in the tubing, means for compressing the gas, and means for injecting the gas in the annulus so that the gas enters the bottom end of the well tubing (14), thereby creating a controlled geyser effect which blows out most of the liquid residing in the well tubing (14). The gas being compressed can be a produced gas or a supplied gas.

Abstract: A device may receive, from a user device and via a base station, a request to access a resource associated with a server device. The device may determine first condition information associated with the user device, and may determine second condition information associated with the base station. The device may determine one or more actions to be performed based on at least one of the first condition information or the second condition information. The device may perform, in association with a first flow or a second flow, the one or more actions. The first flow may be associated with the device and the user device, and the second flow may be associated with the device and the server device.

Abstract: A positional stop device includes a base body, a lever, a driving element, and a retaining member. The lever is rotatablely arranged on the base body, a first end of the lever couples to the driving element, and a second end of the lever couples to the retaining member. The driving element is partially exposed out of the base body. The retaining member is moveablely received in the base body. When the slider of a pneumatic rodless cylinder slides along a first direction, the driving element is driven by the slider to move along a second direction and be fully received in the base body. The lever is driven by the driving element to rotate around the base body. The retaining member is driven by the lever to move along a third direction and to be partially exposed out of the base body to stops the slider from sliding.

Abstract: The present disclosure discloses a preparation method of pressed Scandia-doped dispenser cathode using microwave sintering. Embodiments of the present disclosure include dissolving some nitrates and ammonium metatungstate with deionized water to prepare a homogeneous solution. Precursor powder with uniform size is obtained by spray drying, the precursor powder is decomposed, and two-step reduction may be proceeded to form doped tungsten powder with uniform element distribution. The cathode is prepared by one-time microwave sintering. One-time forming of cathode sintering is realized, and sintering shrinkage and sintering time are reduced significantly. The method has excellent repeatability, and the cathode has a homogeneous structure and excellent emission performance at 950° C.

Abstract: A heat pipe is provided, including a capillary body. The capillary body has a condensation portion, an evaporation portion, and a connecting portion connecting the condensation portion with the evaporation portion. The capillary body is formed by metal weaving. A cross-section of the evaporation portion is larger than that of the condensation portion.

Abstract: A testing apparatus for testing a circuit board is disclosed, which includes an upper plate, a lower plate, and an adaptor circuit board. A plurality of positioning units is received in the lower plate. Each positioning unit has a plurality of length-variable test probes secured therein. Each test probe has a shell and upper and lower probe ends at opposite ends of the shell. In test, the circuit board is put on the lower plate and the upper plate is lowered to push the circuit board and the lower plate toward the adaptor circuit board. The upper ends of the test probes engage with electrical connectors of the circuit board and the lower ends thereof engage with the adaptor circuit board whereby test of the circuit board can be automatically performed by the testing apparatus.

Abstract: The present disclosure discloses a light source device. The light source device comprises a light source array configured to emit an excitation light; a phosphor sheet arranged in a propagation direction of the excitation light and configured to receive the excitation light to emit an excited unsaturated amber light; and a cutoff filter arranged along a propagation direction of the unsaturated amber light and configured to filter the unsaturated amber light to obtain a saturated amber light.

Abstract: A light source comprises a light emitting diode array (101) and a collimator array (102). The light emitting diode array (101) comprises at least two light emitting diode units (101a, 101b) that emit light of different colors; the collimator array (102) is used for collimating light emitted by the light emitting diode units (101a, 101b) and keep the optical extension of the light emitted by the light emitting diode units (101a, 101b) substantially unchanged. The light source further comprises a dodging device (103) used for dodging light emerging from the collimator array (102). An illuminating device comprises the light source. The light emitting diode units (101a, 101b) and the collimator unit (102a) in the light source and the illuminating device minimize the optical extension of the emergent light, thereby maximizing the luminance.

Abstract: Embodiment of the present invention discloses a kind of methionine lyase and its encoding gene and biosynthetic method. According to the present invention, the gene encoding methionine lyase as shown in SEQ ID No. 1 is separated from the genome of C. rosea. Embodiment of the present invention further provides an efficient biosynthetic method of methionine lyase, comprising: (1) cloning gene (shown in SEQ ID No. 1) encoding methionine degradation enzyme into a yeast expression vector to construct recombinant yeast expression vector; (2) transforming the recombinant yeast expression vector into Saccharomyces cerevisiae to obtain expression strain; (3) inducing the expression strain to express the methionine lyase, collecting induced strains, purifying expressed recombinant methionine lyase. Purity of recombinant methionine lyase prepared according to the present invention is above 90%, and its efficiency of degradating methionine can reach 0.53±0.0030 ?M MTL·h?1·mg protein?1.

Abstract: A cylinder includes a curved cylinder body, a first support member, and a piston assembly. The curved cylinder body defines a gas chamber passing through opposite ends. The first support member includes a support housing slidably mounted on the outer circumferential surface of the cylinder body and a first permanent magnet securely mounted in the support housing. The piston assembly received in the gas chamber includes a first piston member and a second piston member rotatably coupled to the first piston member. The first and second piston members respectively have a second permanent magnet which is arranged to be attracted to the first permanent magnet. When the piston assembly moves along the curved cylinder body from the first end to the second end in the gas chamber, the first support member moves with the piston assembly on the outer circumferential surface of the curved cylinder body.

Abstract: It discloses an application of a fermentation broth of Potamogeton crispus in the removal of nitrogen in constructed wetlands. The fermentation broth of Potamogeton crispus is prepared by the following method: collecting, draining off and grinding the Potamogeton crispuses, then, placing the grinded Potamogeton crispuses into a fermentation tank, mixing them with domesticated fermented sludge, and then adding water and fermenting the mixed liquor at a constant temperature, removing the residue of the Potamogeton crispuses, and obtaining the prepared fermentation broth of Potamogeton crispus. The present invention also discloses an application of the fermentation broth of Potamogeton crispus in the removal of nitrogen in constructed wetlands.

Abstract: The present invention relates to the uses of sesquiterpene lactone compounds and their derivatives in preparing drugs. It belongs to the field of drug technology, specifically relates to the uses of the compounds of Formula (I) in preparing the drugs, especially the uses in preparing the drugs to treat rheumatoid arthritis and treat cancers through inhibiting cancer stem cells.