7results about How to "Extended release time" patented technology

This invention relates to the field of pulse circuit technology and discloses a high-efficiency AC power line zero-crossing detection chip, including a path selection module, a signal processing module, and a driving module. The path selection module switches the charging circuit according to the potential of the internal power supply capacitor. The signal processing module uses a feedback loop to adjust the switching level of the sampling branch and generate a zero-crossing trigger pulse signal. The driving module responds to the zero-crossing trigger pulse signal by segmentally turning on the internal power supply capacitor and the external energy supply capacitor in the initial and subsequent stages of the zero-crossing point. This invention solves the contradiction between the ultra-high input impedance sampling environment and the driving strength through a controlled hysteresis window and a segmented current injection mechanism, suppresses signal jitter, improves the timing accuracy of zero-crossing detection, and effectively reduces the static power consumption of the system.

The present application relates to a kind of gel type chlorine dioxide slow-release agent and its preparation method, to solve the defects of chlorine dioxide gas instability, short storage time of disinfectant product in prior art, the gel system of the present application includes: chlorite aqueous solution, gelling agent, graphene oxide, PH regulator and activator, the present application uses graphene oxide as chlorine dioxide gas regulator, utilizes the better adsorption performance of graphene oxide and its surface oxygen-containing functional group, synergistic effect with gelling agent, so that the reaction of chlorine dioxide gas is like a super micro chemical processing plant, establishes a "constantly evaporating, constantly replenishing" chlorine dioxide balance system, continuously releases chlorine dioxide gas, kills a variety of bacteria and viruses in air, purifies air, no secondary pollution, and low price.

The invention discloses a composite material for continuous lithium extraction based on photo-thermal synergy, a supercooled continuous lithium extraction method and application, and belongs to the technical field of salt lake lithium extraction and heat energy management. According to the prepared floating type photo-thermal synergistic lithium extraction composite material, through the design of a three-layer composite structure, the synergistic function of temperature regulation and control, lithium ion adsorption and structure supporting is achieved, the problems that a traditional lithium adsorption material is prone to sedimentation and usually needs an additional supporting structure are solved, the density is smaller than that of water, and the composite material can stably float on the surface of salt lake brine; and large-scale deployment and recovery are facilitated.

The invention relates to a controlled-release linalool emulsion based on a ternary system as well as a preparation method and application of the controlled-release linalool emulsion. The linalool emulsion is an oil-in-water Pickering emulsion composed of a water phase and an oil phase, the water phase comprises a ternary system composed of soybean protein isolate, pectin and hydroxypropyl methyl cellulose, and the oil phase is linalool essential oil. The preparation method comprises the following steps: respectively preparing soybean protein isolate, pectin and hydroxypropyl methyl cellulose solutions, and mixing to obtain a ternary composite water phase; and mixing the ternary composite water phase with the oil phase, and carrying out high-pressure homogenization treatment and ultrasonic treatment under a low-temperature condition to obtain the controlled-release linalool emulsion based on the ternary system. Compared with the prior art, the linalool essential oil emulsion embedding method solves the problem that linalool is easy to volatilize, and can be used in the fields of fruit and vegetable fresh keeping, tea fragrance maintaining and the like.

The application discloses an intestinal-targeted controlled-release microalgae pharmaceutical composition, which comprises a hydrophobic drug, a micellar material and microalgae, wherein the hydrophobic drug is first loaded on the micellar material to form a drug-loaded micelle, the solubility of the hydrophobic drug is improved, and the drug-loaded micelle solution penetrates into the interior of the microalgae cells through a passive water absorption process of dried microalgae instead of being attached to the surface of the microalgae. The natural cell wall of the microalgae itself is solid and acid-resistant, which is used as a first physical barrier to prevent the release of the hydrophobic drug in a gastric acid environment, and the effective concentration and residence time of the hydrophobic drug in the intestinal action site are significantly improved, so that the treatment effect is better, and the intestinal disease and kidney disease drug can be prepared.

The application provides an antifouling composite material and a preparation method and application thereof. The antifouling composite material is prepared from 100 parts by weight of a polymer matrix and 1-100 parts by weight of a slow-release filler, wherein the polymer matrix is a polyurethane with a main chain capable of being degraded into non-toxic small molecules, and the slow-release filler is halloysite nanotubes loaded with an antifouling agent. The polyurethane of the application can be continuously degraded into non-toxic small molecules, and the slow-release filler can release the antifouling agent for a long time, and the combination of the two guarantees the continuous dynamic updating of the surface of the composite material and excellent dynamic / static long-term antifouling performance. The antifouling composite material provided by the application can be coated on the surface of marine engineering equipment to form a long-term protection circle around the marine engineering equipment and prevent marine organisms from adhering or growing on the surface of the equipment.

The application discloses a W / O / W compound emulsion and a preparation method and application thereof. The preparation method of the compound emulsion comprises the following steps: mixing cinnamyl aldehyde and hydrophobic bacterial cellulose with oil to prepare an oil phase; mixing the oil phase with a nutritional ingredient aqueous solution to prepare a W1 / O primary emulsion by homogenously emulsifying; mixing the W1 / O primary emulsion with an aqueous solution W2 containing bacterial cellulose to homogenously emulsify, and the W / O / W compound emulsion is obtained; and the hydrophobic bacterial cellulose is obtained by hydrophobic modification of bacterial cellulose. The cinnamyl aldehyde in the oil phase is released to the outside at the same time as the nutritional ingredient in the inner aqueous phase, so that the released nutritional ingredient is prevented from being polluted by bacteria, the antibacterial time is prolonged, and the shelf life of the compound emulsion is prolonged. In addition, the bacterial cellulose is used as a water-soluble emulsifier to stabilize the O / W2 emulsion, and the hydrophobic bacterial cellulose is used as an oil-soluble emulsifier to stabilize the W1 / O emulsion, so that the compound emulsion has good biocompatibility, safety and stability.