51results about How to "Reduced feasibility" patented technology

Grooved metal tubes (1), of outer diameter De, the tubes being grooved internally with N helical ribs (2) of an apex angle α, height H, base width LN and helical angle β, two consecutive ribs being separated by a flat-bottomed groove (3) of width LR, with a pitch P equal to LR+LN. These tubes are characterised in that,a) De is between 4 and 20 mm,b) the number N of ribs ranges from 46 to 98,c) the rib height H ranges from 0.18 mm to 0.40 mm,d) the apex angle α ranges from 15° to 30°,e) the helical angle β ranges from 18° to 35°. These tubes make it possible to simultaneously obtain a high heat exchange coefficient in evaporation and condensation and a low pressure loss.

The present invention relates to a method for curing substances by UV radiation emitted by light-emitting diodes, to a device for carrying out said method and to ink cured by UV radiation emitted by the light-emitting diodes.

A method and system is disclosed for validating honesty of a student taking an online test. A camera is used to detect and monitor the test taker's eye movements and eye gaze positions during the taking of the test to ensure the test taker is looking only at the computer display showing the questions and answer choices to the test taker. A microphone is incorporated into, placed on, or in the vicinity of the computer display and the system compares audio received to recorded voice of the test taker to detect another voice. Other voices and eye movement beyond the display screen may be flagged as indicative of dishonest test taking.

The present invention provides a covering panel, such as a floor panel, wall panel or ceiling panel, comprising at least one substrate and optionally a top layer, whereby said substrate comprises a synthetic material and at least one filler material. The at least one filler is present in an amount of at least 20.0 wt. % based on the weight of the substrate, and said filler material comprises at least 50 wt. % talc.

The invention relates to a fixing device used for fixing the back skin of an experimental animal. The fixing device used for fixing the back skin of the experimental animal comprises a base and fixing tables, wherein each fixing table comprises a connecting part and a fixing and clamping part connected with the connecting part, the fixing tables are connected with the base in a detachable mode through the connecting parts, the fixing and clamping parts of the two fixing tables are matched to form a fixing through hole allowing the experimental animal to pass through, and the end faces, away from the connecting parts, of the two fixing and clamping parts are matched to clamp the back skin of the experimental animal so that the back skin which is pulled up of the experimental animal can be spread on the outer walls of the fixing and clamping parts. The fixing device used for fixing the back skin of the experimental animal has the advantages that the back skin of the experimental animal can be fixed, negative influence of respiratory movement of the experimental animal on imaging is effectively avoided, damage to the experimental animal is small due to the fact the non-invasive fixing method is adopted, and long-time and stable observation and study of a subcutaneous transplantation tumor model on the back of the experimental animal by means of a photoacoustic imaging system is available.