Abstract: An ultrahigh-pressure acid-fracturing isodiametric hose assembly, comprising a hose body and a metal joint. The metal joint comprises an inner tube, a first outer tube the inner tube, and a second outer tube. The first outer tube and the second outer tube each is an independent pressing part. An external groove is provided at an outer wall of the inner tube. An end of the first outer tube comprises an internal ridge which matches the external groove for snapping. The terminal of the inner tube comprises a connecting portion. An outer wall of the inner tube comprises a first protrusion, and an inner wall of the first outer tube comprises a second protrusion engaging with the first protrusion. The hose body is clamped between the first protrusion and the second protrusion that are engaged. An inner wall of the second outer tube comprises multiple micro-protrusions.

Abstract: A method for cleaning a water filtration membrane, the method having at least an alkaline cleaning step, wherein the method includes a first enzyme solution comprising a polypeptide having carbohydrase activity, and a second enzyme solution comprising a polypeptide having protease activity.

Abstract: A point-of-care testing (POCT) fully-automatic chemiluminescence device based on a multi-channel parallel pretreatment technology includes a support. The support is provided thereon with a reaction chamber assembly, which reciprocates linearly relative to the support. A multi-channel parallel pretreatment assembly and a photomultiplier tube (PMT) assembly are arranged on the support and are located above the reaction chamber assembly. The multi-channel parallel pretreatment assembly is configured to transfer, clean, and separate reagents in reagent strips in the reaction chamber assembly. The PMT assembly is configured to detect a luminescence value of the cleaned and separated reagents. The device does not have a liquid passage, resulting in low maintenance costs and high reliability. This realizes automatic sample addition, supports whole blood testing, and avoids carry-over.

Abstract: A multi-channel parallel pretreatment device includes a magnetic separation and transfer device and a first drive device. The magnetic separation and transfer device includes a second mounting bracket provided therein with an injector chamber. A mounting plate is provided above the top of the injector chamber and is provided with multiple piston rods that are connected to the injector chamber in a movable and sealing manner. The second mounting bracket is further provided thereon with a second drive device. The injector chamber is provided with loading heads that have a hollow structure. The piston rods have free ends that are provided with magnetic rods. The second drive device can drive the magnetic rods on the piston rods to pass through the loading heads. The first drive device and the second drive device realize the reciprocation of the loading heads.

Abstract: An antiscalant composition, the composition having a silica inhibitor composition, and a dispersant composition. A method for inhibiting scale formation in a membrane system, the method providing an antiscalant composition, the antiscalant composition having a silica inhibitor and a dispersant, and adding the antiscalant composition to an aqueous stream of an aqueous system.

Abstract: The present disclosure describes an additive that may be used in the manufacture of thin-film polyamide composite membranes. Thin-film polyamide composite membranes are used in filtration processes, such as reverse osmosis and nanofiltration. The additive may be an amino-siloxane compound. The amino-siloxane compound includes repeated groups of silicon bonded to oxygen with at least one amine functional group. Optionally, the amino-siloxane compound may also include a hydrophilic group. The additive reacts with an aqueous phase and an organic phase to form a thin polyamide film on a porous substrate.

Abstract: The present disclosure describes an additive that may be used in the manufacture of thin-film polyamide composite membranes. Thin-film polyamide composite membranes are used in filtration processes, such as reverse osmosis and nanofiltration. The additive may be an amino-siloxane compound. The amino-siloxane compound includes repeated groups of silicon bonded to oxygen with at least one amine functional group. Optionally, the amino-siloxane compound may also include a hydrophilic group. The additive reacts with an aqueous phase and an organic phase to form a thin polyamide film on a porous substrate.

Abstract: The present disclosure describes an additive that may be used in the manufacture of thin-film polyamide composite membranes. Thin-film polyamide composite membranes are used in filtration processes, such as reverse osmosis and nanofiltration. The additive may be an amino-siloxane compound. The amino-siloxane compound includes repeated groups of silicon bonded to oxygen with at least one amine functional group. Optionally, the amino-siloxane compound may also include a hydrophilic group. The additive reacts with an aqueous phase and an organic phase to form a thin polyamide film on a porous substrate.

Abstract: The present disclosure describes an additive that may be used in the manufacture of thin-film polyamide composite membranes. Thin-film polyamide composite membranes are used in filtration processes, such as reverse osmosis and nanofiltration. The additive may be an amino-siloxane compound. The amino-siloxane compound includes repeated groups of silicon bonded to oxygen with at least one amine functional group. Optionally, the amino-siloxane compound may also include a hydrophilic group. The additive reacts with an aqueous phase and an organic phase to form a thin polyamide film on a porous substrate.