4 results about "Consumer safety" patented technology

A method for rapid detection of microorganisms in beverages, includes placing the beverage sample under constant temperature conditions of 30-35° C. for 48 hours, and then adding it to a culture bottle with a sensing hydrogel and culturing it for 2 days for colorimetric detection; the sensing hydrogel is composed of Schiff base Composed of ZIF-90, neutral red, sodium alginate, and calcium chloride, it can absorb the carbon dioxide produced by microorganisms and respire, thereby causing a significant color change, from yellow to red. The advantage of the invention is that it significantly shortens the detection time, and achieves more economical and efficient detection by simplifying the operating process and reducing equipment requirements. It is especially suitable for microbial safety monitoring in the food and beverage industry to ensure product quality and consumer safety.

A computer-implemented method for assessing event stream integrity is disclosed. The method comprises assuming, by a first utility program, an event producer role to access temporary producer security credentials, assuming, by a second utility program, an event consumer role to access temporary consumer security credentials, generating, by the first utility program, a dummy event comprising a dummy event payload, posting, by the first utility program, the dummy event to the event stream, retrieving, by the second utility program, the dummy event from the event stream based on the dummy event payload, determining, by the second utility program, event stream integrity based on the dummy event payload, and outputting, by the second utility program, a notification based on the determined event stream integrity.

The invention relates to a method, a device, equipment and a medium for a zero-contact operation management platform of an AI intelligent adult shared cabinet. The method comprises the steps of obtaining a commodity reservation purchase request of a consumer terminal, analyzing a target intelligent cabinet and a target commodity, querying real-time states of the target intelligent cabinet and the target commodity through a digital twinborn model, generating a one-time dynamic token, performing homomorphic encryption binding on the one-time dynamic token and a grid physical coordinate to generate an authorization voucher, and sending the authorization voucher to the consumer terminal, and when the consumer terminal meets the near-field condition, analyzing the voucher to obtain a grid opening instruction, checking related data to obtain commodity popularity data, and inputting the commodity popularity data into a pre-trained space-time diagram neural network prediction model to obtain an intelligent operation and maintenance decision suggestion. By adopting the method, the commodity state can be sensed in real time, accurate operation and maintenance are driven by data, zero contact in the whole process is realized, and consumption safety and operation efficiency are guaranteed.

The invention discloses a halogen-free flame-retardant low-temperature spandex fiber and a preparation method thereof, and belongs to the technical field of textile fibers. The phosphorus-containing polyol, the conventional polyol and the isocyanate are used for synthesizing the phosphorus-containing cross-linking agent, the phosphorus-containing cross-linking agent and the low-temperature spandex slices are used for preparing the halogen-free flame-retardant low-temperature spandex fiber, and the preparation method of the halogen-free flame-retardant low-temperature spandex fiber has the advantages that the process is simple, the process is easy to control, the production efficiency is high, the cost is low and the like. The flame-retardant grade of the halogen-free flame-retardant low-temperature spandex fiber prepared by the preparation method disclosed by the invention reaches V0, the limit oxygen index reaches more than 30%, and through stable chemical bonding, an anti-migration lasting flame-retardant effect is realized, and a woven flame-retardant fabric meets the standard requirement of the American consumer safety committee (CPSC) on the flammability of children pajamas.