Abstract: A process for the production of a metal mixture composition containing lead and tin, and comprising by weight at least 10% tin and 45% lead, at least 90% of tin and lead together, more lead than tin, from 1-5000 ppm of copper, at least 0.42% antimony and at least 0.0001% wt of sulphur, at most 0.1% of the total of chromium, manganese, vanadium, titanium and tungsten, and at most 0.1% of each one of aluminium, nickel, iron and zinc. The process includes a pre-treatment step for producing the metal mixture composition, followed by a vacuum distillation step wherein lead is removed by evaporation and a bottom stream is obtained comprising at least 0.6% wt of lead.

Abstract: Metal compositions and processes for fractional crystallization of a molten crude tin mixture containing lead and silver are described. A process includes separating the molten crude tin mixture into a first silver-enriched liquid drain product at the liquid end of a crystallization step and a first tin-enriched product at the crystal end of the crystallization step whereby the first silver-enriched liquid drain product comprises on a dry weight basis 6.0-30.0% wt of lead, 70.0-91% wt of tin, 95.0-99.0% wt of lead and tin together, 0.75-5.00% wt of silver, and ?0.24% wt of antimony. The first silver enriched liquid drain product also includes at least one of: 0.05-0.5% wt of arsenic; 0.05-0.6% wt of copper, 0.0030-0.0500% wt of nickel, at least 0.0010-0.40% wt of bismuth, at most 1.0% wt of iron, or at least 0.0005% wt of gold, the balance being impurities.

Abstract: A device for measuring a physiological parameter of a user carrying the device that includes a sensor having at least two sensor elements for detecting a sensor signal, a carrier configured to carry the sensor, and electrical contacts of the sensor elements that lead on, into or through the carrier. One or more frames carried by the carrier are formed around the sensor and/or the individual sensor elements, and an insulator material is filled between the one or more frames and the sensor and/or the sensor elements surrounded by a respective frame without covering a top surface of a respective sensor element facing away from the carrier.

Abstract: An optical analysis system and method is provided in which a sample is analyzed using a light source. An optical sensor signal is processed using a first signal processing circuit and an electrical signal, which is representative of a drive signal applied to the light source, is processed using a second signal processing circuit. The sensor signal is further processed to improve the signal to noise ratio using the processed electrical signal as a reference.

Abstract: An optical analysis system and method is provided in which a sample is analyzed using a light source. An optical sensor signal is processed using a first signal processing circuit and an electrical signal, which is representative of a drive signal applied to the light source, is processed using a second signal processing circuit. The sensor signal is further processed to improve the signal to noise ratio using the processed electrical signal as a reference.

Abstract: The present invention relates to a photoplethysmography sensor apparatus (200, 300), a photoplethysmography sensor method (400), and a photoplethysmography sensor computer program product. It is proposed to measure a photoplethysmographic signal without ambient light interference. Ambient light signals are rejected by subtraction of a compensation current at the input of a transimpedance amplifier (240, 340). The compensation current is controlled via a closed loop, without interfering with the low duty cycle operation of a photoplethysmography LED (210, 310).

Abstract: The present invention relates to a photoplethysmography sensor apparatus (200, 300), a photoplethysmography sensor method (400), and a photoplethysmography sensor computer program product. It is proposed to measure a photoplethysmographic signal without ambient light interference. Ambient light signals are rejected by subtraction of a compensation current at the input of a transimpedance amplifier (240, 340). The compensation current is controlled via a closed loop, without interfering with the low duty cycle operation of a photoplethysmography LED (210, 310).

Abstract: The present invention relates to a device for measuring a physiological parameter of a user carrying said device. The device comprises a sensor (22) comprising at least two sensor elements (221, 222, 223) for detecting a sensor signal and a carrier (26) carrying said sensor, wherein electrical contacts (34) of said sensor elements lead on, into or through said carrier. One or more frames (41, 42, 43) carried by said carrier are formed around said sensor and/or said individual sensor elements, and an insulator material (32) is filled between said one or more frames and the sensor and/or the sensor elements surrounded by the respective frame without covering the top surface of the respective sensor element facing away from the carrier.