168 results about "Heat stabilization" patented technology

The present invention relates to use of heat-stable carbonic anhydrase in CO2 extraction, e.g., from flue gas, natural gas or biogas. Furthermore, the invention relates to isolated polypeptides having carbonic anhydrase activity at elevated temperatures and isolated polynucleotides encoding the polypeptides. The invention also relates to nucleic acid constructs, vectors, and host cells comprising the polynucleotides.

The invention relates to a virus-killing waterproof breathable film and a preparation method thereof. The virus-killing waterproof breathable film comprises the following components in parts by weight: 70-85 parts of a polytetrafluoroethylene master batch, 2-9 parts of a nano filler, 4-7 parts of a plasticizer, 15-22 parts of modifier, 0.5-1.5 parts of a heat stabilizer, 10-12 parts of a coalescing agent, 1-2 parts of a pore-forming agent and 5-14 parts of nano silver-copper alloy particles. The particle size of the nano-silver copper alloy particles ranges from 15 nm to 50 nm, and copper metal atoms on the outer surfaces of the nano-silver copper alloy particles form copper oxide. According to the waterproof breathable film, specific nano-silver copper alloy powder particles are added into a tetrafluoroethylene base material to serve as a sterilizing and virus killing agent; compared with the existing natural antibacterial agent, organic antibacterial agent and inorganic antibacterialagent, the antibacterial effect is better; and according to the invention, super bacteria and viruses can be resisted and killed, and the killing effect on escherichia coli and staphylococcus aureusrepresenting conventional strains, methicillin-resistant staphylococcus aureus representing super bacteria and currently known coronaviruses reaches 90% or above.

A disposable cassette for detecting nucleic acids or performing other assays. The cassette can be inserted into a base station during use. The cassette has numerous features to ensure correct operation of the device under gravity, such as vent pockets for enabling the flow of sample fluid from one chamber to the next when the vent pocket is unsealed. The vent pockets have protrusions to help prevent accidental resealing. The cassette also can have a gasket to ensure free air movement between open vent pockets. A flexible circuit with patterned metallic electrical components disposed on a heatstable material can be in direct contact with fluid in the chambers and has resistive heating elements aligned with the vent pockets and the chambers. The detection chamber, which houses a lateral flow detection strip can have a space below the strip that has sufficient capacity to accommodate an entire volume of the sample fluid entering the detection chamber at a height that enables the fluid toflow up the detection strip by capillary action without flooding or otherwise bypassing regions of the detection strip. The space can also contain detection particles. Recesses in in the cassette channels or chambers can have structures such as ridges or grooves to direct fluid flow to enhance rehydration of lyophilized reagents disposed in the recess. Flow diverters in the chambers can reduce the flow velocity of the sample fluid and increase the effective fluid flow path length, enabling more accurate control of fluid flow in the cassette.