Abstract: The present disclosure relates to the technical field of earphone and provides to an active noise reduction earphone. The active noise reduction earphone includes an earphone shell, a speaker, a sound outlet mouth, a first feedback digital microphone, a second feedback digital microphone and a sound collecting channel. Herein, the speaker divides the earphone shell into the front speaker cavity and the back speaker cavity; the sound outlet mouth is arranged to be faced to the speaker to output the sound emitted by the speaker; the first feedback digital microphone is arranged at the first noise reduction sound collecting hole preset in the back speaker cavity to collect external ambient noise; the sound in the ear canal is collected through the sound collecting channel, and the second feedback digital microphone isolates the sound collecting channel from the front speaker cavity.

Abstract: Compositions with modified tannins can be used in wellbore operations. A composition can include an oil, a modified tannin, a dimer fatty acid, an aqueous liquid, and an emulsifier, where the material is injectable into a wellbore. The modified tannin may be treated with a primary amine, secondary amine, tertiary amine, or quaternary amine. The compositions may be used as drilling fluids having enhanced yield point and fluid loss control properties.

Abstract: Disclosed is a tunnel protection structure suitable for active fault areas and high ground stress areas, and relates to the technical field of tunnel engineering construction. The tunnel protection structure comprises at least one protection unit, wherein a plurality of protection units are sequentially connected and distributed along the axial direction of a tunnel, and the protection units comprise a radial protection ring and two axial protection rings which are fixedly arranged between a lining structure and surrounding rock and are distributed along the axial direction of the tunnel; the radial protection ring comprises a plurality of radial buffer energy consumption layers which are sequentially sleeved along the radial direction of the tunnel; and the axial protection ring comprises a plurality of axial buffer energy consumption layers which are sequentially and fixedly connected along the axial direction of the tunnel.

Abstract: Systems and methods are disclosed that provide low latency augmented reality architecture for camera enabled devices. Systems and methods of communication between system components are presented that use a hybrid communication protocol. Techniques include communications between system components that involve one-way transactions. A hardware message controller is disclosed that controls out-buffers and in-buffers to facilitate the hybrid communication protocol.

Abstract: Methods and compositions for servicing a wellbore and, in certain embodiments, to the use of compositions in a wellbore to mitigate lost circulation. In some embodiments, the methods include providing a treatment fluid that includes an aqueous base fluid, a lost circulation material, and a rheology modifier that includes a nanocellulose material; introducing the treatment fluid into a wellbore penetrating at least a portion of a subterranean formation including a loss zone; and allowing the treatment fluid to rapidly defluidize in the loss zone.

Abstract: The present disclosure provides a curing agent comprising a polyetheramine, a tertiary amine and an alkanolamine. The curing agent may be combined with an epoxy resin to form a curable composition which is capable of being applied to a substrate and cured to form a cured article.

Abstract: Disclosed is a tunnel protection structure suitable for active fault areas and high ground stress areas, and relates to the technical field of tunnel engineering construction. The tunnel protection structure comprises at least one protection unit, wherein a plurality of protection units are sequentially connected and distributed along the axial direction of a tunnel, and the protection units comprise a radial protection ring and two axial protection rings which are fixedly arranged between a lining structure and surrounding rock and are distributed along the axial direction of the tunnel; the radial protection ring comprises a plurality of radial buffer energy consumption layers which are sequentially sleeved along the radial direction of the tunnel; and the axial protection ring comprises a plurality of axial buffer energy consumption layers which are sequentially and fixedly connected along the axial direction of the tunnel.

Abstract: A clove essential oil Pickering emulsion-based coating preservative, and a preparation method and use thereof. Preparing a 20 mg/ml zein solution with ethanol and a zein powder, preparing a 0.4 mg/ml to 6 mg/ml sodium caseinate solution with ultrapure water and sodium caseinate, and conducting magnetic stirring overnight; adding the zein solution dropwise into the sodium caseinate solution, and conducting magnetic stirring; conducting evaporation on the ethanol in the zein solution, and replacing evaporated ethanol with the ultrapure water; adding a clove essential oil, and conducting high-speed homogenization for 3 min to obtain a clove essential oil Pickering emulsion; and preparing a 1.5% w/v to 2% w/v chitosan solution with 1% v/v acetic acid and chitosan, adding the clove essential oil Pickering emulsion to the chitosan solution, conducting high-speed homogenization for 3 min, and conducting ultrasonic defoaming for 30 min to obtain the clove essential oil Pickering emulsion-based coating preservative.

Abstract: A method may include: providing a cleanout fluid comprising a single anionic surfactant, a single nonionic surfactant, and a solvent; preparing a cleanout pill by mixing the cleanout fluid with a brine; and displacing a fluid in a wellbore using the cleanout pill.

Abstract: A variety of methods, systems, and compositions are disclosed, including, in one embodiment, method of scale inhibition including: introducing a treatment fluid comprising a brine, a scale inhibitor in neutralized form, and a thermally activated acid precursor through a wellbore and into a producing formation; wherein the thermally activated acid precursor is heated to release an acid that enhances miscibility of the scale inhibitor in the brine.

Abstract: A system and method for controlling characteristics of collected image data are disclosed. The system and method include performing pre-processing of an image using GPUs, configuring an optic based on the pre-processing, the configuring being designed to account for features of the pre-processed image, acquiring an image using the configured optic, processing the acquired image using GPUs, and determining if the processed acquired image accounts for feature of the pre-processed image, and the determination is affirmative, outputting the image, wherein if the determination is negative repeating the configuring of the optic and re-acquiring the image.

Abstract: Disclosed herein are methods, systems, and apparatus for processing blockchain-based guarantee information. One of the methods includes receiving a first cyphertext of a first digital document specifying a guarantee from a first computing device associated with at least a first guarantor and one or more zero-knowledge proofs (ZKPs) related to one or more values associated with the guarantee, and the first digital document specifies one or more predetermined conditions of executing the guarantee; verifying that the one or more ZKPs are correct; storing the first cyphertext to a blockchain based on performing a consensus algorithm; receiving a first message from a second computing device associated with a beneficiary or a representative of the beneficiary.

Abstract: A system for assessing text content of a product. The system includes a computing device having a processor and a storage device storing computer executable code. The computer executable code, when executed at the processor, is configured to: provide text contents and confounding features of products; train a first regression model using the text content and the confounding features of the products; train the second regression model using the confounding features; operate the first regression model using the text contents and the confounding features to obtain a total loss; operate the second regression model using the confounding features of to obtain a partial loss; subtract the total loss from the partial loss to obtain a residual loss; use the residual loss to evaluate models and parameters for the regression models; and use the first regression model to obtain log odds of the words indicating importance of the words.

Abstract: A data processor includes a plurality of requestors, a plurality of responders, and a data fabric. The data fabric is for routing requests between the plurality of requestors and the plurality of responders and has a plurality of non-operational power states including a normal C-state and a light-weight C-state. The light-weight C-state has lower entry and exit latencies than the normal C-state. The data fabric monitors traffic through the data fabric and places the data fabric in the light-weight C-state in response to detecting an idle traffic state.

Abstract: A method for coordinating transactions for domain names to register a plurality of domain names with a domain name portfolio stored in a storage, such that each of the domain names in a plurality of domain names belongs to only the domain name portfolio as a unique member of the domain name portfolio; associate a portfolio account with the domain name portfolio, the portfolio account configured for managing a pool of funds available for use in payment of the transactions for said each of the domain names of the plurality of domain names; receive credit payment instructions attributed to the portfolio account, the credit payment instructions containing a credit payment amount; record the credit payment amount against the pool of funds in order to increase a level of the pool of funds; receive debit payment instructions associated with a domain name of the domain name portfolio and domain name transaction information associated with the transaction for the domain name; record the debit payment amount against th

Abstract: A system and a method for obtaining a content plan are provided. The system includes a computing device configured to: provide a tag for each clause of each sentence of each product description of each of a category of products, where the tags include introductive tags corresponding to attributions of the products and description tags corresponding to descriptions of the products; determine tag exclusiveness, tag similarity, tag distance, and tag causality between the tags; generate candidate tag sequences the product descriptions; and filter the candidate tag sequences using the tag exclusiveness, the tag similarity, the tag distance and the tag causality to obtain the content plan.

Abstract: A display apparatus is disclosed in the embodiments of the present disclosure. The display apparatus includes a display structure, a sound emitting substrate, and a plurality of electromagnetic exciters; wherein the display structure is configured to receive and display optical signals; the sound emitting substrate is attached to the display structure and is divided into a plurality of regions by a plurality of isolation zones, at least some of the plurality of regions are attached to at least one of the plurality of electromagnetic exciters; and the plurality of electromagnetic exciters are configured to generate bending waves at an area where the plurality of electromagnetic exciters are attached to the sound emitting substrate.

Abstract: The present disclosure provides a curing agent comprising a polyetheramine, a tertiary amine substantially free of an aromatic tertiary amine and glycerin. The curing agent may be combined with an epoxy resin to form a curable composition which is capable of being applied to a substrate and cured to form a cured article.