Abstract: Embodiments of the present disclosure relate to a method of producing pyrolysis oil that may reduce a content of impurities in pyrolysis oil. In the method of producing pyrolysis oil according to the present disclosure, in order to recycle polyethylene terephthalate (PET), monomers are recovered by depolymerizing polyethylene terephthalate with alcohol, and then a remaining depolymerization residue is used as an additive in pyrolysis production of waste plastics, such that a content of impurities in pyrolysis oil may be reduced.

Abstract: The present disclosure relates to a recyclable polyethylene-based laminated packaging material with openability and a method of manufacturing the same including a multi-layered polyethylene film C in which a surface layer A and a sealant layer B are bonded to each other. The sealant layer B is a layer in which a polyolefin plastomer layer b1, a mixed resin layer b2 obtained by mixing a high-density polyethylene resin and a low-density polyethylene resin, and a composition layer b3 containing a resin composition obtained by mixing medium-density polyethylene and low-density polyethylene are sequentially laminated. Also disclosed is a method of manufacturing the same.

Abstract: An electrolyte solution for a lithium secondary battery and a lithium secondary battery including the electrolyte solution are provided. The electrolyte solution includes an additive represented by Chemical Formula 1, an organic solvent and a lithium salt: wherein in Chemical Formula 1, R1 and R2 are each independently hydrogen or a substituted or unsubstituted C1-C5 alkyl group, X is O or S, and L is a substituted or unsubstituted C1-C5 alkylene group. The lithium secondary battery including the electrolyte solution provides enhanced high-temperature properties.

Abstract: The present disclosure provides a catalyst for SRO reactions. The catalyst includes a solid acid material and a metal. In this case, pores of the catalyst corresponding to at least 20% of the total pore volume of the catalyst have a pore size of 10 nm or more. The present disclosure also provides a method of using the catalyst.

Abstract: A nebulizer including a host having a head portion, a cup body having a nebulizing module disposed on a bottom thereof, an engaging member, a mouthpiece having a first opening, a second opening, and a tongue plate, and a sensor element is provided. The engaging member includes a first, a second, and a third engaging opening communicated with one another. The cup body is coupled to the engaging member through the first engaging opening. The engaging member, inside which a first partition wall is disposed, is coupled to the host through having the third engaging opening engaged with the head portion. The mouthpiece is coupled to the engaging member through having the second opening engaged with the second engaging opening. The tongue plate, disposed inside the mouthpiece and abuts against the first partition wall, divides an inner space of the mouthpiece into a first and a second channel.

Abstract: Provided are a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an embodiment of the present disclosure, a separator including: a porous substrate and an inorganic particle layer provided on at least one surface of the porous substrate may be provided, wherein a value of the following Formula (1) is 0.135 or more: (1) BDV/t, wherein BDV is a voltage (kV) when a leakage current value is 5 mA, and t is an overall average thickness (?m) of the separator.

Abstract: A separator including a porous substrate and an inorganic composite layer formed on one surface or both surfaces of the porous substrate, the inorganic composite layer including inorganic particles, a one-dimensional inorganic material, and an organic binder. The dimensions of the inorganic particles and the one-dimensional inorganic material are different, and the one-dimensional inorganic material is included in an amount of 0.1 to 15 parts by weight with respect to 100 parts by weight of the inorganic particles. Also, a method of manufacturing the separator including coating a dispersion liquid containing inorganic particles, a one-dimensional inorganic material, and an organic binder on one surface or both surfaces of a porous substrate and drying the coated porous substrate to form an inorganic composite layer. Further, an electrochemical element including the separator.

Abstract: Disclosed are a method and apparatus for estimating S-wave velocities by learning well logs, whereby the method includes a model formation step of forming an S-wave estimation model to output S-wave velocities corresponding to measured depth when the well logs are input based on train data sets including train data having values of multiple factors included in the well logs, the values being arranged corresponding to measured depth, and label data having S-wave velocities corresponding to measured depth as answers, and an S-wave velocity estimation step of inputting unseen data having values of multiple factors included in well logs acquired from a well at which S-wave velocities are to be estimated, the values being arranged corresponding to measured depth, to the S-wave estimation model to estimate S-wave velocities corresponding to measured depth.

Abstract: A separator, a method of manufacturing the separator, and an electrochemical device including the separator. The separator includes: a porous substrate; and an inorganic particle layer formed on at least one surface of the porous substrate, wherein a release rate of the inorganic particle layer is 70% or more when measured by immersing the separator in a water tank at room temperature and then subjecting the separator to sonication under conditions of a frequency of 40 kHz, an output of 1,000 W, and an application time of 60 seconds.

Abstract: Disclosed is a method for providing improved hydrogenation activity by pretreating a catalyst in a three-step manner before selective hydrogenation of unsaturated hydrocarbons in an aromatic fraction in the presence of an oxide-type bimetallic (particularly nickel-molybdenum) supported catalyst.

Abstract: Provided herein are glass substrate multilayer structure, a manufacturing method thereof, and a flexible display panel including the same. Also provided is a glass substrate multilayer structure that has remarkably good surface hardness, has remarkably good impact resistance, can provide for safety of a user by resisting scattering when the glass substrate is broken, and has excellent optical properties. The disclosure also relates to a manufacturing method the glass substrate multilayer structure, and a flexible display panel including the same.

Abstract: Provided are a biodegradable aliphatic-aromatic polyester copolymer having excellent hydrolysis resistance and high viscosity which has a carboxyl end group (CEG) content of 15 mg KOH/g or less, a ratio (Mz/Mn) of a z-average molecular weight (Mz) to a number average molecular weight (Mn) of 3 to 15, and a melt index (MI) of 5 g/10 min or less as measured under conditions of a temperature of 190° C. and a load of 2.16 kg in accordance with ASTM D 1238. A method of preparing a biodegradable aliphatic-aromatic polyester copolymer is provided, including adding a chain extender and an anti-hydrolysis agent to an aliphatic-aromatic polyester pre-copolymer over time, whereby a significant viscosity rise and improvement of hydrolysis resistance may be implemented simultaneously.

Abstract: A method according to an embodiment is for recovering a valuable metal from a waste electrode material of a lithium secondary battery by using lithium carbonate. An anode-cathode mixed electrode material that has been separated by draining, crushing, screening, and sorting a waste lithium secondary battery is preprocessed. A precipitation operation performed by adding lithium carbonate (Li2CO3) to a metal melt acquired by performing sulfuric acid dissolution using sulfuric acid. A valuable metal such as nickel, cobalt, manganese, aluminum, and copper is recovered as a residue in the form of a carbonate composite, and a lithium sulfate (Li2SO4) aqueous solution including lithium is recovered as a filtrate.

Abstract: A swinging locking mechanism for a bicycle rack is provided, configured to be assembled with a base of a hanging member, including a first rod member, a first connecting rod, a second rod member, a second connecting rod and an operating member. The first connecting rod is movably disposed on the first rod member and includes at least one second engaging portion releasably engaged with the at least one first engaging portion. The second rod member is non-swingably sleeved with the first rod member. The second connecting rod is movably disposed on the second rod member and detachably assembled with the first connecting rod. The operating member is connected with the second connecting rod. The bicycle rack including the swinging locking mechanism is further provided, further including: a carrying frame, connected with the swinging locking mechanism and configured to carry at least one bicycle.

Abstract: The present invention relates to a separator including: (a) a porous substrate; and (b) an inorganic composite layer formed on one surface or both surfaces of the porous substrate, and including one or more inorganic particles and one or more one-dimensional inorganic materials, wherein the dimensions of the one or more inorganic particles and the one or more one-dimensional inorganic materials are different, wherein the one or more one-dimensional inorganic materials include inorganic nanowire(s) and/or inorganic nanofiber(s), wherein the one or more inorganic particles may be bound to each other, or the inorganic composite layer may be anchored and adhered to the porous substrate, by the one or more one-dimensional inorganic materials, and the inorganic composite layer does not include a polymer-based organic binder.

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: The present disclosure provides a method for detecting controller area network (CAN) bus intrusion of a vehicle-mounted network based on a Gaussian mixture model-hidden Markov model (GMM-HMM), including the following steps: obtaining a normal packet of a CAN bus of a vehicle-mounted network, and counting cycles of all packets of each CAN ID based on a time sequence, that is, a time difference between two frames of packets of a same CAN ID, to form a cycle sequence as an input of an algorithm; dividing the cycle sequence of each CAN ID into a fixed length based on the algorithm, and then training a GMM-HMM for each CAN ID to obtain a likelihood probability of a normal cycle sequence; and further counting a cycle sequence of each CAN ID for a tested packet sequence, calculating, after the cycle sequence is input a model, a likelihood probability of generating the sequence, and determining whether the packet sequence is abnormal by comparing the likelihood probability with a threshold of the likelihood probabili

Abstract: A cathode for a lithium secondary battery according to an embodiment of the present invention includes a cathode current collector, and a cathode active material layer on the cathode current collector. The cathode active material layer includes cathode active material particles. The cathode active material particles include first lithium metal oxide particles having a shape of a secondary particle in which a plurality of primary particles are aggregated, and second lithium metal oxide particles having a shape of a single particle. A closed pore ratio of the cathode active material layer is 5% or less.

Abstract: Provided is a method of manufacturing syngas including (S1) heat-treating organic wastes under a catalyst in a first reactor to produce a first mixed gas; (S2) separating the catalyst and carbon dioxide (CO2) from the first mixed gas, and recovering a mixed gas from which the catalyst and the carbon dioxide (CO2) have been removed; (S3) converting the carbon dioxide (CO2) separated in (S2) into carbon monoxide (CO) by a reverse Boudouard reaction in a second reactor; and (S4) mixing the mixed gas recovered in (S2) and the carbon monoxide (CO) converted in (S3) to produce syngas.