Abstract: A semiconductor memory device, and a method of manufacturing the semiconductor memory device, includes a first source layer, a second source layer on the first source layer, a stack on the second source layer, a channel structure passing through the stack and the second source layer, and a common source line passing through the stack and the second source layer. The second source layer includes an air gap and a conductive layer surrounding the air gap.

Abstract: In the present disclosure, a dehydrogenation catalyst in which cobalt in the form of single atom is supported on an inorganic oxide (specifically, silica) support in which an alkali metal in the form of single atom is fixed by alkali metal pretreatment and a method for producing the same, and a method for producing olefins by dehydrogenating corresponding paraffins, specifically light paraffins in the presence of the dehydrogenation catalyst are described.

Abstract: A semiconductor device may include a gate structure including insulating layers and conductive layers alternately stacked, a channel layer passing through the gate structure, an insulating core disposed in the channel layer, and a capping layer including a capping pattern disposed in the channel layer and a capping liner disposed between the capping pattern and the insulating core and extending between the channel layer and the capping pattern, wherein the capping liner and the capping pattern may include impurities having different concentrations.

Abstract: In the present disclosure, a dehydrogenation catalyst in which cobalt in the form of single atom is supported on an inorganic oxide (specifically, silica) support in which an alkali metal in the form of single atom is fixed by alkali metal pretreatment and a method for producing the same, and a method for producing olefins by dehydrogenating corresponding paraffins, specifically light paraffins in the presence of the dehydrogenation catalyst are described.

Abstract: Provided is a dehydrogenation catalyst having single-atom cobalt loaded onto a support including a zirconia core surface-modified with silica, a method for producing the dehydrogenation catalyst, and a method for producing corresponding olefin through dehydrogenation of paraffin, particularly light paraffin, in the presence of the dehydrogenation catalyst.

Abstract: A service server providing a tracking service for a transportation device based on a blockchain network system is provided. The service server includes a memory and a processor. The processor receives an information disclosure request for trading, distribution, or repair of the transportation device from a first terminal of an entity holding a token specifying the transportation device or a second terminal of an organization performing trading, distribution, or repair of the transportation device as a proxy; discloses information on the transportation device to a platform providing the service based on the information disclosure request; receives, from a third terminal of an entity purchasing the transportation device, transmission information on currency at a price corresponding to the token; and transmits the token to a node managed by the third terminal and transferring the currency to an account managed by the first terminal based on verification of the transmission information.

Abstract: A handle grip for a bicycle, the handle grip including: a first grip portion coupled to a first side of a handlebar for the bicycle; a first electrode portion disposed to be exposed to the outside of the first grip portion so that the first electrode portion comes in contact with a first body surface of a user; a cable portion having one end connected to the first electrode portion and the other end extending outwardly from the first grip portion; and a module accommodating portion provided in a portion of the first grip portion and having a space for accommodating a predetermined electronic module.

Abstract: The present disclosure relates to a method for manufacturing carboxymethyl cellulose particles, cellulose inducer particles manufactured by the method, and an absorbent article comprising same.

Abstract: In the present disclosure, a heterogeneous nickel-based oligomerization catalyst in which nickel in the form of single atom is loaded on an Al-mesoporous silicate support by ion exchange and a method for producing the same, and a method for oligomerizing light olefins, specifically C4 olefins using the catalyst are described.

Abstract: A spine-correcting orthopedic foam roller for improving metabolism, includes: a spinous process accommodation groove for accommodating spinous processes of the spine; a transversus process stimulating part extending from the spinous process accommodation groove and protruding from a portion thereof corresponding to transversus processes of the spine; and a junctional process accommodation groove extending from the transversus process stimulating part in an axial direction and accommodating junctional processes, which are the ends of the transversus processes at which transverse costal facets are formed.

Abstract: Provided is a dehydrogenation catalyst having single-atom cobalt loaded onto a support including a zirconia core surface-modified with silica, a method for producing the dehydrogenation catalyst, and a method for producing corresponding olefin through dehydrogenation of paraffin, particularly light paraffin, in the presence of the dehydrogenation catalyst.

Abstract: In the present disclosure, a heterogeneous nickel-based oligomerization catalyst in which nickel in the form of single atom is loaded on an Al-mesoporous silicate support by ion exchange and a method for producing the same, and a method for oligomerizing light olefins, specifically C4 olefins using the catalyst are described.

Abstract: In the method of producing natural seasoning according to an embodiment, hot water extraction of kelp is carried out, followed by drying to prepare kelp extract, hot water extraction of oyster mushroom is carried out to prepare oyster mushroom extract, hot water extraction of winter mushroom is carried out to prepare winter mushroom extract, the oyster mushroom extract is inoculated with Pediococcus pentosaceus strain, followed by fermentation to prepare lactic acid bacteria fermented product of oyster mushroom, the winter mushroom extract is inoculated with Lactobacillus acidophilus strain, followed by fermentation to prepare lactic acid bacteria fermented product of winter mushroom, and the lactic acid bacteria fermented product of oyster mushroom, the lactic acid bacteria fermented product of winter mushroom, and the kelp extract are mixed to produce natural seasoning.

Abstract: A platform server includes at least one memory configured to store instructions for performing a predetermined operation, and at least one processor operatively connected to the memory and configured to execute the instructions. The at least one processor is configured to store data in which carbon emissions are defined for each manufacturing weight of bicycle parts made of a predetermined material, acquire an image of a bicycle, determine parts included in the image, determine carbon emissions according to manufacturing of the bicycle by comparing information on the determined parts with the defined data, and provide mileage to a subject related to an event based on the determined carbon emissions when the event related to the bicycle corresponding to the image occurs.

Abstract: Disclosed is a method for producing hydrogen, carbon, and ethylene from a methane-containing feedstock even without recycling of unreacted methane by providing a single process or system in which a methane-containing feedstock is subjected to two methane conversion steps. The method includes a first conversion step of producing hydrogen and carbonaceous materials and a second conversion step of producing acetylene from unreacted methane and hydrogen discharged from the first conversion step while maintaining a good methane conversion and suppressing coke formation, followed by separating and recovering ethylene and hydrogen produced through selective hydrogenation of acetylene.

Abstract: A silicon-carbon containing electrode material includes a porous carbon structure including pores, and a silicon-containing coating formed on the porous carbon structure. A volume ratio of mesopores is 70% or more based on a total pore volume of the porous carbon structure. A weight ratio of silicon is 30 wt % or more based on a total weight of the electrode material. A high-capacity secondary battery is effectively implemented by using silicon-carbon containing electrode material.

Abstract: A platform server includes at least one memory configured to store instructions for performing a predetermined operation, and at least one processor operatively connected to the memory and configured to execute the instructions. The at least one processor is configured to store data in which carbon emissions are defined for each manufacturing weight of bicycle parts made of a predetermined material, acquire an image of a bicycle, determine parts included in the image, determine carbon emissions according to manufacturing of the bicycle by comparing information on the determined parts with the defined data, and provide mileage to a subject related to an event based on the determined carbon emissions when the event related to the bicycle corresponding to the image occurs.

Abstract: A relay server includes a memory storing one or more instructions; and a processor executing the one or more instructions stored in the memory, wherein the instructions, when executed by the processor, cause the processor to: obtain a certification data for a carbon reduction event performed by a user and provide a contracting company point-obtaining right to the user; exchange the contracting company point-obtaining right with a contracting company point payment-guaranteed by a contracting company; and provide the certification data or a revenue generated based on the certification data to the contracting company in pesponse to a guarantee of the contracting company for a user's use of the contracting company point.

Abstract: Provided is a technology to convert an oil having a high content of Cl into a solvent. Impurities such as Cl, S, N, and metals are removed from an oil having a boiling point of 340° C. or lower in a waste oil having a high content of Cl, and hydrogenation is carried out to recover an oil, and the oil may be applied as a solvent. Separation by boiling points to meet the properties of the solvent product is performed, a solid acid material and an oil having a high Cl content are mixed, impurities are removed by a heat treatment at a high temperature, and hydrogenation is carried out with a metal oxide catalyst, thereby manufacturing a solvent product.

Abstract: A semiconductor memory device, and a method of manufacturing the semiconductor memory device, includes a first source layer, a second source layer on the first source layer, a stack on the second source layer, a channel structure passing through the stack and the second source layer, and a common source line passing through the stack and the second source layer. The second source layer includes an air gap and a conductive layer surrounding the air gap.