Abstract: A magnetic magnesium-manganese layered double metal oxide composite and preparation and application. A soluble magnesium salt and a soluble manganese salt are dissolved in water to obtain a magnesium-manganese salt complex liquid; and a soluble carbonate and a soluble hydroxide are dissolved in water to obtain a carbonate-hydroxide complex liquid; a ferroferric oxide powder is added to the carbonate-hydroxide complex liquid, and then ethanol is added for ultrasonic dispersion to obtain a dispersion liquid; then the magnesium-manganese salt complex liquid is added for aging, centrifuging, washing, drying, grinding for sieving, and calcinating at 250-550° C. to obtain a magnetic magnesium-manganese layered double metal oxide composite. The composite of the present invention has relatively strong magnetism to Cd removal, and is featured by high adsorption efficiency, rapid adsorption rate and stability.

Abstract: A zero-valent iron pillared montmorillonite repair material relates to the field of environmental functional materials. A preparation method thereof is mainly to obtain the zero-valent iron pillared montmorillonite repair material by reducing hydroxyl-iron pillared montmorillonite at high temperature in a mixed atmosphere of hydrogen and nitrogen, and mainly includes: (1) preparation of Na-montmorillonite; (2) preparation of a polyhydroxy-iron pillared solution; (3) preparation of hydroxy-iron pillared montmorillonite; and (4) obtaining the zero-valent iron pillared montmorillonite repair material by means of high-temperature reduction-calcination in the mixed atmosphere of hydrogen and nitrogen. The zero-valent iron pillared montmorillonite repair material can be used for removing degradation-resistant organic pollutants, and degrading organics into small molecular organics by means of peroxymonosulfate (PMS).

Abstract: A zero-valent iron pillared montmorillonite repair material relates to the field of environmental functional materials. A preparation method thereof is mainly to obtain the zero-valent iron pillared montmorillonite repair material by reducing hydroxyl-iron pillared montmorillonite at high temperature in a mixed atmosphere of hydrogen and nitrogen, and mainly includes: (1) preparation of Na-montmorillonite; (2) preparation of a polyhydroxy-iron pillared solution; (3) preparation of hydroxy-iron pillared montmorillonite; and (4) obtaining the zero-valent iron pillared montmorillonite repair material by means of high-temperature reduction-calcination in the mixed atmosphere of hydrogen and nitrogen. The zero-valent iron pillared montmorillonite repair material can be used for removing degradation-resistant organic pollutants, and degrading organics into small molecular organics by means of peroxymonosulfate (PMS).

Abstract: In large distributed computing environments, application execution may be distributed between a plurality of groups, the plurality of groups containing a set of host computer systems responsible for the execution of one or more operations of the application. Group membership may be determined by generating configuration information based at least in part on the plurality of groups. The configuration information may be provided to a plurality of host computer systems and each host computer system of the plurality of host computer systems may determine membership to a particular group of the plurality of groups based at least in part on the configuration information.

Abstract: Technologies are disclosed for providing a large scale data join service within a service provider network. A data set includes first and second sets of files that correspond to each other. Each file includes a first identifier (ID) and a second ID. The first set of files is partitioned based at least in part upon the first ID into a plurality of first subsets of files and the second set of files is partitioned based at least in part upon the first ID into a plurality of second subsets of files. Files within a first group of the plurality of first subsets and files within a second group of the plurality of second subsets are encoded into first and second bitsets, respectively, based at least in part upon the second IDs. An exclusive-or operation is performed on the first and second bitsets to find discrepancies between the data files.

Abstract: A kitchen waste treatment device in environment-protection-device field comprises a main fermentation barrel comprising a barrel body mounted on supporting brackets and including a feed inlet, a discharge outlet and a material chamber, push plates located within the material chamber to push materials therein to move along barrel body axial direction and further a gas inlet system having gas inlets located at same barrel body end as the discharge outlet and a gas-exhaust system having gas-exhaust ports located at same barrel body end as the feed inlet; a feeding apparatus whose feed end communicates with the feed inlet; and a power apparatus driving the barrel body to rotate around its axis. The gas inlets/gas-exhaust ports communicate with the material chamber. The treatment device has simple compact structure and small occupied area and realizes material horizontal propulsion and repeated rotational-stirring in the barrel body by barrel body rotation, achieving material-degrading-and-fermenting object.

Abstract: Provided are a method for preparing kaolin immobilized GY2B bacteria and use thereof.

Abstract: Provided are a method for preparing kaolin immobilized GY2B bacteria and use thereof.

Abstract: A kitchen waste treatment device in environment-protection-device field comprises a main fermentation barrel comprising a barrel body mounted on supporting brackets and including a feed inlet, a discharge outlet and a material chamber, push plates located within the material chamber to push materials therein to move along barrel body axial direction and further a gas inlet system having gas inlets located at same barrel body end as the discharge outlet and a gas-exhaust system having gas-exhaust ports located at same barrel body end as the feed inlet; a feeding apparatus whose feed end communicates with the feed inlet; and a power apparatus driving the barrel body to rotate around its axis. The gas inlets/gas-exhaust ports communicate with the material chamber. The treatment device has simple compact structure and small occupied area and realizes material horizontal propulsion and repeated rotational-stirring in the barrel body by barrel body rotation, achieving material-degrading-and-fermenting object.