Abstract: The present disclosure relates to a light energy collecting system and a detection apparatus. Some embodiments of the present disclosure provide a light energy collecting system and a detection apparatus, to correct chromatic aberration, simplify system structure, and improve system reliability and stability.

Abstract: An industrial emergency lighting device includes a driving module, a light-emitting module, a charging module, a rechargeable power source module, a power supply detecting module and a control module. The driving module, charging module and power supply detecting module are connected to an external power source. The light-emitting module is connected to the driving module. The rechargeable power source module is connected to the charging module and light-emitting module. The control module is connected to the driving module, power supply detecting module and rechargeable power source module. The power supply detecting module detects the input voltage of the external power source. When determining that the input voltage is low-level, the control module triggers a storage mode counting process. When determining that the number of the voltage changes of the input voltage reaches a predetermined number of times during a predetermined time period, the control module enters a sleep mode.

Abstract: Disclosed is a system and a method for information distribution. The system comprises: a server for generating a group key and its corresponding key deriving parameter, wherein the server encrypts sensitive contents by using the group key to obtain encrypted information; and terminals configured to receive the encrypted information through an open channel, extract the group key, then decrypt the encrypted information by using the group key to obtain the original content. In the group forming process, each terminal encrypts its private identifier using the public key and submits the ciphertext to the server. In information distribution process, the server transmits the ciphertext of sensitive contents and the key deriving parameter to the terminals via open channel Because private information available only to respective group members is required for calculating the group key, this mechanism ensures that the sensitive content can be transmitted securely on the open channel.

Abstract: The invention discloses an expandable copolymer resin used for manufacturing a lost foam casting model and a preparation method thereof, wherein the molecular weight of the expandable copolymer resin is 150000-300000, and the expandable copolymer resin comprises mixed monomers, deionized water, a cellulose ether dispersant, sodium salt, an initiator, a foaming agent and a molecular weight regulator; the mixed monomers comprise MMA and ST, wherein MMA accounts for 70-95% wt of the mixed monomers, and ST accounts for 5-30% wt of the mixed monomers. The model formed by the expandable copolymer resin has the advantage of reducing or eliminating carbon defects of castings when casting cast iron and cast steel.

Abstract: The invention discloses an expandable copolymer resin used for manufacturing a lost foam casting model and a preparation method thereof, wherein the molecular weight of the expandable copolymer resin is 150000-300000, and the expandable copolymer resin comprises mixed monomers, deionized water, a cellulose ether dispersant, sodium salt, an initiator, a foaming agent and a molecular weight regulator; the mixed monomers comprise MMA and ST, wherein MMA accounts for 70-95% wt of the mixed monomers, and ST accounts for 5-30% wt of the mixed monomers. The model formed by the expandable copolymer resin has the advantage of reducing or eliminating carbon defects of castings when casting cast iron and cast steel.

Abstract: A gas separation cartridge including a housing comprising an inlet port for an air sample to enter; a top cover attached to the housing; an upper cavity comprising individual chambers comprised of a chemical or an absorbent or a mixture thereof attached to the top cover wherein each end of each chamber has an opening; a bottom cover attached to the upper cavity, wherein the bottom cover comprises a lower cavity, a separate opening for an air sample traveling from an individual chamber to pass through, and a separate opening for an air sample that does not pass through an individual chamber; and a base upon which the bottom cover of the cartridge is seated, wherein the base has an exit port.

Abstract: The present invention discloses a special modified expandable polystyrene copolymer particle for a lost foam, which respectively comprises the following parts by weight: 90 to 100 parts of styrene; 3 to 8 parts of methyl methacrylate; 100 to 140 parts of deionized water; 0.2 to 0.5 part of benzoyl peroxide; 0.2 to 0.5 part of dicumyl peroxide: 0.1 to 0.5 part of tert-butyl peroxybenzoate: 0.001 to 0.01 part of anionic surfactant; 1 to 2 parts of suspension concentrate; 5.0 to 10.0 parts of foaming agent; 0.1 to 0.4 part of nucleator; 0.2 to 2 parts of organic bromine; 0.01 to 0.1 part of molecular weight regulator having the effect of increasing molecular weight, and 0.3 to 0.5 part of surface coating agent.

Abstract: A hydroponic growth system may be integrated into a programmable system providing for the growth of plants. An upper section of a system may include a lighting system able to vary lighting characteristics such as the intensity or spectral content of light provided to the plants and atmospheric systems to control the temperature, flow, or humidity of air around the plants that are mounted on an actuated platform. A control system may execute a program to control the available systems including the actuated above-plant platform to programmably control the height or heights of the systems above plants.

Abstract: A gas separation cartridge including a housing comprising an inlet port for an air sample to enter; a top cover attached to the housing; an upper cavity comprising individual chambers comprised of a chemical or an absorbent or a mixture thereof attached to the top cover wherein each end of each chamber has an opening; a bottom cover attached to the upper cavity, wherein the bottom cover comprises a lower cavity, a separate opening for an air sample traveling from an individual chamber to pass through, and a separate opening for an air sample that does not pass through an individual chamber; and a base upon which the bottom cover of the cartridge is seated, wherein the base has an exit port.

Abstract: A system and method of combining group buying with regular selling is provided. A group-buying company advertises a first product for sale from a group-buying website. The first product is a group-buying deal with deep discount offered for a short period of time. The group-buying websites also provides recommendation information on one or more products based on the first product. The one or more recommended products are supplied by another non-group-buying company. Consumers are able to purchase the one or more recommended products from the group-buying website.

Abstract: A merchandise selection system comprises a merchandise trial selection module, a sales volume prediction module, and a targeted selling module. The trial selection module determines a set of trial parameters including city information, product information, price information, and trial period information. The sales volume prediction module determines estimated sales volume for a product during a sales period in a selected city based on trial result. The targeted selling module determines to feature the product for the sales period in the selected city if the estimated sales volume meets a threshold. The merchandise selection system provides better prediction result, facilitates precise planning, and enables better control of shelf space in each city.

Abstract: A lightweight merchandise distribution system for online group-buying is provided. The distribution system comprises a computer server, a plurality of small distribution centers, and a plurality of delivery entities. The computer server comprises a merchandise sales-prediction module and a distribution center-optimization module. Before a product is featured on a group-buying website, the number of small distribution centers is set up in a densely populated city based on the center-optimization result. The featured product is then pre-allocated to each distribution center based on the sales-prediction result. Each delivery entity comprises a delivery person, a wireless handheld device, and a delivery vehicle. The delivery person preloads the featured products onto the delivery vehicle before receiving any order. The delivery person delivers the ordered product by the delivery vehicle once the purchase order is received from the wireless handheld device.

Abstract: The application relates to a foamable copolymer resin and a process for preparing the same, which comprises firstly adding an organic peroxide initiator, a modifying aid and a foaming agent to a mixed monomers of methyl methacrylate and styrene so as to constitute a homogenous mixture; at the same tine charging a deionized water into a polymerization reactor and adding a dispersant hydroxy ethyl cellulose or hydroxylpropyl cellulose ether with stirring to produce a homogenous mixture, then sealing the reactor and introducing N2 gas to purge the reactor before the above homogenous monomer mixture is added; after the completion of the reaction the residue is washed with water and dewatered and dried, obtaining foamable pellets.

Abstract: The application relates to a foamable copolymer resin and a process for preparing the same, which comprises firstly adding an organic peroxide initiator, a modifying aid and a foaming agent to a mixed monomers of methyl methacrylate and styrene so as to constitute a homogenous mixture; at the same time charging a deionized water into a polymerization reactor and adding a dispersant hydroxy ethyl cellulose or hydroxylpropyl cellulose ether with stirring to produce a homogenous mixture, then sealing the reactor and introducing N2 gas to purge the reactor before the above homogenous monomer mixture is added; after the completion of the reaction the residue is washed with water and dewatered and dried, obtaining foamable pellets.