An electronic safety system includes a RO-device configured to produce ultrapure water. The RO-device has a sensor unit for collecting sensor data. The RO-device comprises an electronic data interface in order to send the sensor data collected by the sensor unit. The system also includes an analysis unit which is configured to analyse a water sample with regards to safety requirements and with regard to contamination and to generate result data. The analysis unit includes an analysis interface in order to send the generated result data in electronic form. The system also includes a network for the data exchange between the medical-technical entities, for example, between the RO-device and the analysis unit.

A pump and valve arrangement (201), a dialysis system (10) comprising the pump and valve arrangement 201 and a method of operating a pump and valve arrangement (201). The pump and valve arrangement (201) has a dialyser having a semi-permeable membrane. The pump and valve arrangement (201) delivers dialysis fluid to and from the dialyser (12). The pump and valve arrangement (201) has a control system (450) configured to shuttle dialysis fluid between an inlet pump assembly and the dialyser (12) one or more times so as to agitate the surface of the semi-permeable membrane of the dialyser (12).

The present disclosure is directed to a method for producing a non-alcoholic liquid product or a low-alcoholic liquid product, the method comprising nanofiltration, ultrafiltration, dialysis, or any combination thereof, of a grape mash with a sugar concentration from 8 Brix to 18 Brix, thereby obtaining a mixture with a sugar concentration from 10% to 50% less than the sugar concentration of said grape mash; and fermenting said mixture with one or more yeast during a period of time from 4 days to 8 days, thereby obtaining a liquid product. Compositions obtained by the method, additives comprising propane-1,2,3-triol, propan-1-ol, quinine hydrochloride, or any combination thereof, particularly from 3 g/L to 12 g/L of propane-1,2,3-triol, from 0.5 g/L to 1 g/L of propan-1-ol and from 0.001% (w/w) to 0.005% (w/w) of quinine hydrochloride and food products comprising the same are also disclosed.

According to an aspect of the present inventive concept there is provided a device for filtering particles from a fluid, comprising: a silicon-based membrane comprising a first surface and a second surface, pores extending through a thickness of the membrane from the first surface to the second surface, wherein at least walls of the pores have an electric surface charge, and wherein the silicon-based membrane is configured to receive a flow of the fluid on the first surface and to transport the particles from the first surface to the second surface; and a coating extending at least along the walls of the pores, wherein the coating comprises at least one layer of an polyelectrolyte, the polyelectrolyte adhering at least to the walls of the pores by an electric charge of the polyelectrolyte being opposite to the electric surface charge and thereby reversing the electric surface charge.

An edge-oxidized single-layer graphene and a preparation method thereof are provided. The preparation method includes: mixing a single-layer graphene, a binder, and a dispersant, and drying a resulting slurry to obtain an electrode plate; and subjecting the electrode plate to electrolytic oxidation in an electrolytic cell to obtain the edge-oxidized single-layer graphene; wherein the electrolytic oxidation is conducted under an ultra-low frequency alternating current having a frequency of 0.01 Hz to 0.02 Hz; and the electrolytic oxidation is conducted at a current density of 30 mA.Math.cm2 to 50 mA.Math.cm2 for 50 s to 100 s.

A polyurethane-resin-forming composition including a polyisocyanate prepolymer (A) and a polyol (B) is disclosed. The polyisocyanate prepolymer (A) contains a reaction product of diphenylmethane diisocyanate (a1-1) and/or modified diphenylmethane diisocyanate (a1-2), and an active hydrogen-containing compound (a2), the polyol (B) includes a transesterification product (b1) of a castor oil-based polyol and a hydroxyl group-containing amine-based compound, a hydroxyl group-containing amine-based compound (b2), and a castor oil-based polyol (b3), a content of the transesterification product (b1) is 0.1 mass % or more and 10 mass % or less with respect to a total mass of the polyisocyanate prepolymer (A) and the polyol (B).

A method of synthesizing carbon quantum dots (CQDs) includes using a dried ground Halodule uninervis seagrass to form a suspension in water, followed by centrifuging and filtering through a filter membrane and a dialysis membrane to form a CQDs solution. The CQDs have a Stokes shift of less than 83.0 nm at an excitation wavelength of 380 to 430 nm.

A polyarylethersulfone (PAES) copolymer, a process for preparing the PAES copolymer, an article such as a film, fiber, membrane or a part thereof comprising the PAES copolymer, the use of the PAES copolymer in the preparation of an article, a polymer solution comprising the PAES copolymer, and a method for using such article for aqueous medium treatment. The PAES copolymer is a random polymer which comprises at least two types of recurring units, one of which being derived from condensation of a diol and a dihalogenated alkylene oxide, while the other type of recurring units is derived from condensation of the same diol and a dihalodiphenylsulfone. The diol may be aromatic or alicyclic. The dihalogenated alkylene oxide preferably has at most 9 carbon atoms and/or at most 4 oxygen atoms.

The present disclosure relates to a process for testing the integrity of membranes in a filter module. Specifically, the process is applied to filters for extracorporeal blood treatment, in particular, filters comprising both filter membranes and particulate material.