Abstract: A method for promoting the accumulation of secondary metabolites of cannabis is disclosed. The method comprises the step of adding an irradiation of green-yellow light, which has a peak wavelength at 505-590 nm, into the indoor growing environment of cannabis to improve the level of cannabidiol (CBD), secondary metabolites in cannabis. While maintaining the light intensity and other growth conditions, the yield and/or level of CBD, secondary metabolites in cannabis, can be increased by up to 11.04%.

Abstract: A three-way catalyst for reduced palladium loading is provided. The catalyst includes an inert substrate and a palladium catalyst material coating the substrate. The palladium catalyst material includes a support material formed from one of 10% CeO2/Al2O3, 20% CeO2—Al2O3 (20CeAlOy), 30% CeO2—Al2O3 (30CeAlOy), Al2O3, and MOx-Al2O3, wherein M is one of copper, iron, manganese, titanium, zirconium, magnesium, strontium, and barium. The palladium catalyst material includes a layer of CeO2 material disposed upon the support material, wherein the layer of CeO2 material is dispersed on a surface of the support material. The palladium catalyst material includes an active component including a layer of praseodymium oxide particles dispersed across the surface of the layer of CeO2 material and a layer of palladium particles disposed upon and dispersed across the surface of the layer of CeO2 material at locations each corresponding to a respective location of each of the praseodymium particles.

Abstract: A three-way catalyst for reduced palladium loading is provided. The catalyst includes an inert substrate and a palladium catalyst material coating the substrate. The palladium catalyst material includes a support material formed from one of 10% CeO2/Al2O3, 20% CeO2—Al2O3 (20CeAlOy), 30% CeO2—Al2O3 (30CeAlOy), Al2O3, and MOx-Al2O3, wherein M is one of copper, iron, manganese, titanium, zirconium, magnesium, strontium, and barium. The palladium catalyst material includes a layer of CeO2 material disposed upon the support material, wherein the layer of CeO2 material is dispersed on a surface of the support material. The palladium catalyst material includes an active component including a layer of praseodymium oxide particles dispersed across the surface of the layer of CeO2 material and a layer of palladium particles disposed upon and dispersed across the surface of the layer of CeO2 material at locations each corresponding to a respective location of each of the praseodymium particles.

Abstract: The present disclosure provides a purification material for a rare earth metal or rare earth alloy and a preparation method thereof and a purification method for a rare earth metal or rare earth alloy. The purification material includes the following raw materials in mass percentage: 30% to 45% of a tungsten powder, 30% to 50% of a rare earth oxide, 5% to 10% of zirconia, 10% to 15% of a binder, and 1% to 5% of a rare earth hydride.

Abstract: The present disclosure provides SCR catalyst compositions capable of reducing nitrogen oxide (NOx) emissions in engine exhaust. The catalyst compositions include a reducible metal oxide support containing ceria, one or more transition metal oxides as a redox promotor; and an oxide of niobium, tungsten, silicon, molybdenum, or a combination thereof as an acidic promotor. The redox promotor and the acid promotor are both supported on the reducible metal oxide support. Further provided are SCR catalyst articles coated with such compositions, processes for preparing such catalyst compositions and articles, an exhaust gas treatment system including such catalyst articles, and methods for reducing NOx in an exhaust gas stream using such catalyst articles and systems.

Abstract: A catalyst may include a base material, a precious metal, and a metal oxide. At least a portion of the precious metal may form catalytically active sites on a surface of the metal oxide. The catalytically active sites may be formed by depositing the precious metal on the base material to form a catalyst structure, performing a first calcination on the catalyst structure, depositing the metal oxide on the catalyst structure, wherein the precious metal is at least partially encapsulated by the metal oxide, performing a second calcination on the catalyst structure, and reducing the catalyst structure with a reductive material, where at least a portion of the precious metal diffuses to a surface of the metal oxide to form the catalytically active sites.

Abstract: Methods for fabricating thermally stable reducible metal oxide catalyst support structures on a base material using a multi-step incipient wetness impregnation (IWI) process are disclosed. For example, reducible metal oxide catalyst support structures having high surface area and high thermal stability may be formed using a multi-step IWI process, where the support structure is generated through high-temperature calcination between IWI steps. The metal or metal oxide catalysts fabricated using the methods are also disclosed. The generation of engineered surface defects on reducible metal oxides using a gas reduction process to serve as anchoring sites for metal or metal oxide catalysts is also disclosed. Generating engineered defects through a gas reduction process may be a relatively low-cost and scalable process suitable for fabricating efficient catalysts using a wide range of materials.

Abstract: Methods for fabricating thermally stable reducible metal oxide catalyst support structures on a base material using a multi-step incipient wetness impregnation (IWI) process are disclosed. For example, reducible metal oxide catalyst support structures having high surface area and high thermal stability may be formed using a multi-step IWI process, where the support structure is generated through high-temperature calcination between IWI steps. The metal or metal oxide catalysts fabricated using the methods are also disclosed. The generation of engineered surface defects on reducible metal oxides using a gas reduction process to serve as anchoring sites for metal or metal oxide catalysts is also disclosed. Generating engineered defects through a gas reduction process may be a relatively low-cost and scalable process suitable for fabricating efficient catalysts using a wide range of materials.

Abstract: A method for fabricating a precious metal catalyst may include depositing a precious metal on a base material to form a catalyst structure, performing a first calcination on the catalyst structure, depositing a metal oxide on the catalyst structure such that the precious metal is at least partially encapsulated by the metal oxide, performing a second calcination on the catalyst structure, and reducing the catalyst structure with a reductive material to induce diffusion of at least a portion of the precious metal to a surface of the metal oxide.

Abstract: The disclosed embodiments provide a system for performing unified management of targeting attributes in A/B tests. During operation, the system obtains attribute configurations for attributes to be used in subsequent targeting of users by A/B tests. Next, the system configures, based on the attribute configurations, onboarding of the attributes from an offline environment, a near-real-time environment, and an online environment. During an A/B test, the system retrieves values of one or more of the attributes for a user from locations specified in the attribute configurations. Finally, the system outputs the values with targeting conditions for the A/B test for use in selecting a treatment assignment for the user in the A/B test.

Abstract: The disclosed embodiments provide a system for managing an A/B test. During operation, the system calculates a first risk associated with ramping up exposure to a first A/B test by a first ramp amount. Next, the system uses a first sequential hypothesis test to compare the first risk with a first risk tolerance for the first A/B test. When the first sequential hypothesis test indicates that the first risk is within the first risk tolerance, the system automatically triggers a ramp-up of exposure to the first A/B test by the first ramp amount.

Abstract: A rocking sensor device includes a primary bracket (1), a rotating shaft (2), rollers (3), magnets (4) and a magnetic induction sensor (5). The primary bracket (1) is rockably connected to the rotating shaft (2). The rollers (3) and the magnets (4) are mounted on both ends of the primary bracket (1) and their positions are symmetrical about the rotating shaft (2). The magnetic induction sensor (5) is mounted on the perimeter of the primary bracket (1) at a position such that it can sense rocking of the magnet (4) on any end with the primary bracket (1). The rocking sensor device is wear and corrosion resistant, and can be self-cleaning.

Abstract: A rocking sensor device includes a primary bracket (1), a rotating shaft (2), rollers (3), magnets (4) and a magnetic induction sensor (5). The primary bracket (1) is rockably connected to the rotating shaft (2). The rollers (3) and the magnets (4) are mounted on both ends of the primary bracket (1) and their positions are symmetrical about the rotating shaft (2). The magnetic induction sensor (5) is mounted on the perimeter of the primary bracket (1) at a position such that it can sense rocking of the magnet (4) on any end with the primary bracket (1). The rocking sensor device is wear and corrosion resistant, and can be self-cleaning.