3results about How to "Moderate reaction temperature" patented technology

The present application belongs to the technical field of natural product chemical modification, and particularly relates to a chemically modified rare ginsenoside derivative, a preparation method and application thereof. The present application takes rare ginsenoside as raw material, introduces a sulfate group by sulfating modification on the rare ginsenoside to obtain a chemically modified rare ginsenoside derivative; the modifier used in the sulfating modification is a sulfonating agent. The rare ginsenoside is synthesized by conversion with ginsenoside Rb1 as raw material and AlCl3 as catalyst in an ethanol system. The modification method of the present application is simple in operation steps, does not require special equipment, is suitable for large-scale production, and has a broad application prospect in the field of drug preparation development and the like.

This invention relates to the field of air pollution control technology, specifically a high-temperature flue gas emission desulfurization and denitrification device, comprising a denitrification mechanism and a desulfurization mechanism. The denitrification mechanism employs a vacuum-jacketed mounting cylinder, which contains an array of denitrification arc-shaped guide holes and a combined denitrification module. The module includes a denitrification guide cylinder, an arc-shaped filter screen, and a limiting guide cylinder with oblique guide grooves, effectively expanding the catalytic area and uniformly distributing the flow. A back-blowing fan and an elastically limiting rotating guide plate are also included to achieve online vibration self-cleaning. The desulfurization mechanism introduces flue gas into the desulfurization mounting cylinder through a gradient annular guide cylinder and uniformly enlarging inlet holes from top to bottom, forming a gradient three-dimensional desulfurization. A bottom discharge drive and a spiral guide plate ensure uniform catalyst renewal. This device has a compact structure, excellent insulation and airflow organization, and solves problems such as ash accumulation and blockage, difficult maintenance, and low catalyst utilization in existing technologies, thus improving denitrification and desulfurization efficiency and continuous operation stability.

This invention provides a rapid reaction device for qPCR detection reagents, belonging to the field of biotechnology. It includes a housing with a temperature control component on one side and a reagent placement component on the top. Through the temperature control component, the fins, acting as efficient heat exchangers, rapidly absorb and release heat. When hot air passes through the fins, heat is quickly transferred to the entire inner chamber, raising the internal temperature. When cold air passes through, the fins absorb heat and transfer it to the cold air, thus lowering the internal temperature. The combination of hot and cold air blowers and the fins allows for rapid response to temperature regulation needs, achieving precise temperature control within the housing, meeting the requirements of rapid qPCR detection reagent reactions, and improving detection efficiency.