34results about How to "Good invasiveness" patented technology

Among others, the present invention provides micro-devices for detecting or treating a disease, each comprising a first micro sensor for detecting a property of the biological sample at the microscopic level, and an interior wall defining a channel, wherein the micro sensor is located in the interior wall of the micro-device and detects the property of the biological sample in the microscopic level, and the biological sample is transported within the channel

The invention discloses an infrared radiation coating suitable for a metal matrix and a preparation method, a mass ratio of a component A to a component B is 80-120%, wherein the component A comprises the following raw materials by mass percentage: 30-90% of transitional metal oxides infrared radiation powder, 2-20% of inorganic bind additive, 0-30% of silicon carbide, 0-30% of corundum, 0-20% of zirconia, 0-20% of Ni powder, 0-20% of Zn powder, 0-20% of Al powder, 0-1% of carbon powder and 0-10% of sodium fluosilicate; the component B comprises the following raw materials by mass percentage: 60-95% of sodium silicate, 0-35% of water, 0-3% of dispersant, 0-1% of thickener, 0-1% of defoamer and 0-1% of leveling agent. After drying and solidifying the coating, the surface of the formed coating is compact, the infrared radiation coating has excellent infrared radiation performance and high temperature stability, and can firmly bonded with the metal matrix.

A process for preparing the composite TiB2-graphite carbon block used as the cathode of large aluminium electrolyzer includes such steps as proportionally mixing TiB2 powder, adhesive and graphite powder, adding it to the basic block until the carbon block is shaped, and calcining. Its advantages are low voltage drop on cathode, less electric consumption, and long service life of electrolyzer.

The invention discloses a heat exchange device for welding of a metal pipeline. The heat exchange device comprises multiple sections of arc-shaped plate type heat exchange pieces, inter-section connecting pins, inter-section connecting pipes and adjusting bolts; each arc-shaped plate type heat exchange piece comprise an arc-shaped red copper plate, foam copper, a sealing ring, an arc-shaped stainless steel casing and compression bolts; the multiple sections of arc-shaped plate type heat exchange pieces are in chained connection through the inter-section connecting pins; the inter-section connecting pipes are arranged at water inlets / outlets of the adjacent arc-shaped stainless steel casings correspondingly; the adjusting bolts are arranged on the last section of arc-shaped plate type heatexchange piece after chained connection and is connected with the first section of arc-shaped plate type heat exchange piece so as to fix the whole heat exchange device for welding of the metal pipeline to the outer wall of the pipeline. The heat exchange device has the beneficial effects as follows: the arc-shaped red copper plates are closely attached to the outer wall of the pipeline, the contact surface is large, and the heat exchange efficiency is high; and the heat exchange device can adapt to welding of pipelines in various different diameters, has the wide application range and is convenient to mount and dismount, the equipment cost is saved, and the production efficiency is improved.

The invention discloses a CdSe / ZnS quantum dot-modified quercetinantibacterial agent and a preparation method thereof. The antibacterial agent comprises the following active ingredients in percentage by weight: 30%-40% of quercetin, and 60%-70% of CdSe / ZnS core-shell quantum dots; the preparation method comprises the following steps: firstly, preparing a precursor NaHSe from NaBH4 and Se powder, then adding quercetin and CdCl3.<2.5>H2O-containing mixed solution into the precursor NaHSe, and reacting to obtain quercetin-modified CdSe mononuclear quantum dots, finally, adding the quercetin-modified CdSe mononuclear quantum dots into the mixed solution dissolved with quercetin and ZnSO4.7H2O, then adding a solution prepared from Na2S.9H2O, refluxing for 1.5 hours at 100DEG C, to obtain the CdSe / ZnS quantum dot-modified quercetinantibacterial agent. According to the method, the CdSe / ZnS quantum dots are modified on the quercetin, and the agent has fluorescence, so that the agent can be intuitively observed on the aspect of clinical therapy.