Abstract: A photographing apparatus is provided, including a photographing device comprising imaging circuitry configured to generate an image signal by photoelectric conversion of incident light, a processor comprising processing circuitry configured to determine a sampling interval of time lapse photographing over time based on a reference value acquired in real time while the time lapse photographing is performed, to sample a plurality of input frames generated from the image signal at the sampling interval while the time lapse photographing is performed, to stabilize a plurality of frames selected by sampling the plurality of input frames using a window determined based on the sampling interval, and to compress the plurality of selected frames at an output frame rate to generate a time lapse image file, and a storage configured to store the time lapse image file.

Abstract: A method comprises enabling epoxy vegetable oil to react with a compound of a formula III in a second microstructured reactor to obtain the vegetable oil polyol. Compared with the existing technology, the present invention adopts a novel, environment-friendly ring-opening agent, the obtained polyol is novel in structure, high in hydroxyl value, even in distribution and low in viscosity, and can completely replace traditional petrochemical polyol to be applied to the preparation of polyurethane foam materials.

Abstract: A vegetable oil polyol for flexible polyurethane foam, a preparation method and application thereof. The method includes the following steps: (1) subjecting an epoxidized vegetable oil, a benzoylformic acid, a basic catalyst, and an inert solvent to a ring-opening reaction in a first microchannel reactor of a microchannel reaction device to obtain a vegetable oil polyol; and (2) subjecting the vegetable oil polyol obtained in the step (1), a propylene oxide and an inert solvent to an addition polymerization reaction in a second microchannel reactor of the microchannel reaction device to obtain the vegetable oil polyol for flexible polyurethane foam.

Abstract: A polyurethane polyol, and a preparation method and application thereof. The method comprises the following steps: (1) carrying out a reaction on phosphorus oxychloride, epichlorohydrin, a first acidic catalyst and an inert solvent in a first microchannel reactor to obtain a chloroalkoxy phosphorus compound; (2) carrying out a reaction on the chloroalkoxy phosphorus compound, glycidol, a second acidic catalyst and an inert solvent in a second microchannel reactor to obtain a hydroxy compound; (3) carrying out a ring-opening reaction on the hydroxy compound, epoxy vegetable oil, a basic catalyst and an inert solvent in a third microchannel reactor to obtain a vegetable oil polyol; and (4) carrying out an addition polymerization reaction on the vegetable oil polyol, propylene oxide and an inert solvent in a fourth microchannel reactor to obtain the polyurethane polyol.

Abstract: A preparation method of vegetable oil polyol, which is obtains by carrying out allylic oxidation treatment of vegetable oil, increasing the content of hydroxyl group in the product and then one step reaction between epoxidation and ring-opening. At the same time, the present invention also discloses novel vegetable oil polyol made by the preparation method and the application of the vegetable oil polyol in preparation of polyurethane foam material. Compared with the prior art, the method has the advantages of simple operation, low energy consumption and low side reaction occurrence rate.

Abstract: Continuous processing methods for making absorbable polymeric dry spun non-wovens with one or more of the following properties: high burst strength, fine fibers of average diameter from 0.01 ?m to 50 ?m, and thickness from 10 ?m to 10 mm, have been developed. Improved fiber cohesion is made possible by controlling the tackiness of the fibers of the non-woven during web collection. The polymer is preferably a polyhydroxyalkanoate, more preferably, a 4-hydroxybutyrate polymer or copolymer. A non-woven of poly-4-hydroxybutyrate is most preferred. The non-wovens have fine fibers with average diameters ranging from 0.01 ?m to 50 ?m, and are derived by dry spun processing, during which a solution of polymer(s) is injected into a stream of high velocity air with a pressure of 1 to 500 psi for solvent stripping and polymer strand attenuation. The non-wovens can be used for a variety of purposes including fabrication of medical devices.

Abstract: A method to prepare functional polyester polyols by using micro-reaction device, wherein mixing ?-caprolactone/?-valerolactone monomer with mercapto alcohol evenly with appropriate organic solution under moistureless conditions, and continuously transferring the prepared mixing solution into a micro-reaction device supported with an immobilized enzyme for polymerization to synthetize a poly (?-caprolactone/?-valerolactone). Compared with the prior art, the present invention achieves a continuous production by using immobilized lipase Novozyme435 as a catalyst.

Abstract: Methods to produce structures containing ultrafine fibers with average diameters from 10 nm to 10 ?m and more preferably from 50 nm to 5 ?m, have been developed. These methods produce ultrafine fibers without substantial loss of the polymer's weight average molecular weight. The ultrafine electrospun fibers have an unexpectedly higher degree of molecular orientation, and higher melt temperature than fibers derived by dry spinning. In the preferred embodiment, the polymer comprises 4-hydroxybutyrate. The ultrafine fibers are preferably derived by electrospinning. A solution of the polymer is dissolved in a solvent, pumped through a spinneret, subjected to an electric field, and ultrafine fibers with a high degree of molecular orientation are collected. These structures of ultrafine fibers can be used for a variety of purposes including fabrication of medical devices.

Abstract: A preparation method of vegetable oil polyol, which is obtains by carrying out allylic oxidation treatment of vegetable oil, increasing the content of hydroxyl group in the product and then one step reaction between epoxidation and ring-opening. At the same time, the present invention also discloses novel vegetable oil polyol made by the preparation method and the application of the vegetable oil polyol in preparation of polyurethane foam material. Compared with the prior art, the method has the advantages of simple operation, low energy consumption and low side reaction occurrence rate.

Abstract: It relates to the field of synthetic macromolecular chemistry, and discloses a method for one-step synthesis of thiol-functionalized polyester polyols by organic catalysis. This method uses lactone monomer as reaction raw material, thiol-alcohol as initiator, and diphenyl phosphate as organic catalyst to catalyze and synthesize the thiol-functionalized polyester polyols. The present invention provides a method which is simple, inexpensive, easily controllable and environmentally friendly to prepare thiol-functionalized polyester polyols with the easily available and controllable catalyst. The method can selectively catalyze the ring opening polymerization of lactone to prepare thiol-functionalized polyester polyols using the organic catalyst.

Abstract: A method includes receiving first data defining a first bounding box for a first image of a sequence of images. The first bounding box corresponds to a region of interest including a tracked object. The method also includes receiving object tracking data for a second image of the sequence of images, the object tracking data defining a second bounding box. The second bounding box corresponds to the region of interest including the tracked object in the second image. The method further includes determining a similarity metric for first pixels within the first bounding box and search pixels within each of multiple search bounding boxes. Search coordinates of each of the search bounding boxes correspond to second coordinates of the second bounding box shifted in one or more directions. The method also includes determining a modified second bounding box based on the similarity metric.

Abstract: An imaging apparatus and an imaging method are provided. The imaging apparatus includes an imager configured to output image data for a subject, a motion detector configured to detect motion of the imaging apparatus, and a controller configured to control the imager to suspend output of the image data in response to the motion detector detecting the motion.

Abstract: The present disclosure relates to a composition comprising a thermoplastic vulcanizate, a propylene-based elastomer and a foaming agent, and to a foamed material comprising said composition. The foamed material has increased tensile properties and tension set while attaining comparable effects of reduction of weight.

Abstract: A photographing apparatus is provided, including a photographing device comprising imaging circuitry configured to generate an image signal by photoelectric conversion of incident light, a processor comprising processing circuitry configured to determine a sampling interval of time lapse photographing over time based on a reference value acquired in real time while the time lapse photographing is performed, to sample a plurality of input frames generated from the image signal at the sampling interval while the time lapse photographing is performed, to stabilize a plurality of frames selected by sampling the plurality of input frames using a window determined based on the sampling interval, and to compress the plurality of selected frames at an output frame rate to generate a time lapse image file, and a storage configured to store the time lapse image file.

Abstract: A method for preparing caprolactam by using a microreactor under Lewis acid catalysis, wherein a hydroxyl group in a cyclohexanone oxime is activated to obtain a cyclohexanone oxime sulfonates intermediate, then rearranged under Lewis acid catalysis to prepare the caprolactam. The method of this invention has a simple process and a high operation safety and selectivity, the reaction condition is mild, an efficient reaction can take place even at room temperature, the reaction time is short, the conversion of the cyclohexanone oxime can reach 100% within a short time, the selectivity of the caprolactam can reach 99%, the energy consumption is greatly reduced in the premise of maintaining a high yield, and the production cost is reduced, being an efficient and green and environmentally friendly method of for synthesizing the caprolactam.

Abstract: Embodiments of the present invention relate to water leakage detection. Data obtained by a smart electricity meter during a predefined time period is collected, where the smart electricity meter is associated with a water-consuming unit. Usages of certain electric appliances in the water-consuming unit during the predefined time period are determined based on the collected data. The electricity consumption of those appliances is correlated to water consumption. The legitimate water consumption of the water-consuming unit during the predefined time period is then determined based on the usages of the electric appliances.

Abstract: It relates to the field of synthetic macromolecular chemistry, and discloses a method for one-step synthesis of thiol-functionalized polyester polyols by organic catalysis. This method uses lactone monomer as reaction raw material, thiol-alcohol as initiator, and diphenyl phosphate as organic catalyst to catalyze and synthesize the thiol-functionalized polyester polyols. The present invention provides a method which is simple, inexpensive, easily controllable and environmentally friendly to prepare thiol-functionalized polyester polyols with the easily available and controllable catalyst. The method can selectively catalyze the ring opening polymerization of lactone to prepare thiol-functionalized polyester polyols using the organic catalyst.