Abstract: The invention discloses a portable mobile phone fixed mount, comprising a strap, a mobile phone clamp component and article placing bags; the strap consists of a chest and waist belt and shoulder belts wherein chest and waist belt is provided with a hasp; the mobile phone clamp component comprises a mounting plate, a mount adjusting mechanism and a mobile phone clamp; a plurality of article placing bags are fixed on chest and waist belt; the invention is worth promoting because it realizes portable design to the cellphone supporting tool, set up as an organic whole with the strap, alleviating burden of long-term lifting cellphone or selfie stick on the way, and improving enjoyment of hiking. The mobile phone clamp component is located at the joint of chest and waist belt and strap, one side of body, facilitating customers uses, having advantages of storing more articles, rich functions and good expansibility.

Abstract: A battery cell, a manufacturing method thereof, a battery, and an electric device are provided in the embodiments of the present application. The battery cell includes: a housing component, the housing component includes a housing, the housing has an opening, and an outer surface of the housing include at least one connection surface configured to fix the battery cell; and an insulation layer including an insulation coating and an insulation film, where the insulation coating covers at least a portion of one connection surface, and an outer surface of the insulation film that covers the housing is located outside the insulation coating.

Abstract: The invention provides a positive electrode material, a preparation method thereof, and an electrochemical device. The positive electrode material is a secondary particle formed by the aggregation of primary particles. The secondary particle contains a cavity structure inside. Based on the positive correlation characteristics between the content of an A element in the positive electrode material particles and the cavity ratio, by introducing an appropriate proportion of the A element when the positive electrode material precursor is formed, the accompanying cavity structure formed inside the precursor is at an appropriate cavity ratio, in order to ensure that the positive electrode material may buffer the volume strain during the charge and discharge process through the internal appropriate proportion of the cavity structure, and alleviate the rupture phenomenon of the secondary particle during the cycle, thereby improving the cycle life and volume energy density of the positive battery.

Abstract: The invention discloses a lithium supplement agent, a preparation method thereof, an electrochemical device, and an electronic device. The lithium supplement includes a component A and a component B; a general chemical formula of the component A is: Li6-xM11-yN1yO4-z, wherein 0?x?5.95, 0?y?1, 0?z?2, M1 is selected from one or a plurality of Fe, Ni, Co, Cu, Al, Mn, Ti, and Si; N1 is selected from one or a plurality of Fe, Ni, Co, Cu, Al, Mn, Ti, and Si; a general chemical formula of the component B is: Li1+(a/(2+a))Mn2a/(2+a)M26/(2+a)?2O2, 0.2?a?1; the component B is at least partially located at a surface of the component A. A positive electrode material containing the lithium-supplement agent of the invention has better stability and high theoretical capacity, and is used in a lithium-ion battery to improve the energy density and cycle stability of the battery.

Abstract: An end cap assembly, a battery cell, a battery, an electrical device, and a method and device for manufacturing a battery cell are provided. The end cap assembly includes an end cap and a pressure relief mechanism. The pressure relief mechanism is connected to the end cap. The pressure relief mechanism is configured to: keep in a first pressure relief state when an internal pressure or temperature of the battery cell is greater than or equal to a first threshold and less than a second threshold, so as to release the internal pressure of the battery cell; and keep in a second pressure relief state when the internal pressure or temperature of the battery cell is greater than or equal to the second threshold, so as to release the internal pressure of the battery cell.

Abstract: The invention discloses an anti-phenacetin monoclonal antibody hybridoma cell strain AD, a preparation method and application thereof, and relates to the technical field of food safety immunodetection. The monoclonal antibody hybridoma cell strain is named monoclonal cell strain AD and the number CGMCC19681. The Phe-BA obtained by the hydrolysis of the reaction product of the phenacetin metabolite acetaminophen and ethyl 4-bromobutyrate is used as the hapten, and the hapten is coupled with the carrier protein to prepare the immunogen Phe-BA-BSA. After the mice were immunized with the immunogen Phe-BA-BSA, they were fused with myeloma cells by PEG method, screened by indirect competitive enzyme-linked immunosorbent assay and subcloned five times to obtain hybridoma cell lines. The monoclonal antibody secreted by the cell line can be made into a phenacetin detection kit, which has good affinity and detection sensitivity for phenacetin, and can be used for immunodetection of phenacetin residues in food.

Abstract: The present disclosure describes methods, devices, and storage mediums for adjusting computing resource. The method includes obtaining an expected pooling time of a target pooling layer and a to-be-processed data volume of the target pooling layer; obtaining a current clock frequency corresponding to at least one computing resource unit used for pooling; determining a target clock frequency according to the expected pooling time of the target pooling layer and the to-be-processed data volume of the target pooling layer; and in response to that the convolution layer associated with the target pooling layer completes convolution and the current clock frequency is different from the target clock frequency, switching the current clock frequency of the at least one computing resource unit to the target clock frequency, and performing pooling in the target pooling layer based on the at least one computing resource unit having the target clock frequency.

Abstract: Provided is a method of preparation of (1R, 3S)-3-amino-1-cyclopentanol, the method including: contacting N-acylhydroxyamine and cyclopentadiene for an asymmetric cycloaddition, to yield a first intermediate I; hydrogenating the first intermediate I to yield a second intermediate II; hydrolyzing, ammonolyzing, hydrazinolyzing, or alcoholyzing an amido bond of the second intermediate II to yield a third intermediate III; and hydrogenating the third intermediate III to yield (1R, 3S)-3-amino-1-cyclopentanol.

Abstract: A convolution processing method and apparatus for a convolutional neural network, and a storage medium are provided. The method includes that: weight values in a sub convolution kernel in the convolutional neural network are classified; for each of the weight values, an indicator storing a corresponding operation to be executed on data and an address representing the weight value are generated according to a classification result of the corresponding weight value; corresponding to-be-processed data is acquired according to the address of the weight value; and a convolution operation is executed on the to-be-processed data according to the indicator to obtain a convolution result.

Abstract: Provided is a method of preparation of (1R, 3S)-3-amino-1-cyclopentanol, the method including: contacting N-acylhydroxyamine and cyclopentadiene for an asymmetric cycloaddition, to yield a first intermediate I; hydrogenating the first intermediate I to yield a second intermediate II; hydrolyzing, ammonolyzing, hydrazinolyzing, or alcoholyzing an amido bond of the second intermediate II to yield a third intermediate III; and hydrogenating the third intermediate III to yield (1R, 3S)-3-amino-1-cyclopentanol.

Abstract: The present disclosure describes methods, devices, and storage mediums for adjusting computing resource. The method includes obtaining an expected pooling time of a target pooling layer and a to-be-processed data volume of the target pooling layer; obtaining a current clock frequency corresponding to at least one computing resource unit used for pooling; determining a target clock frequency according to the expected pooling time of the target pooling layer and the to-be-processed data volume of the target pooling layer; and in response to that the convolution layer associated with the target pooling layer completes convolution and the current clock frequency is different from the target clock frequency, switching the current clock frequency of the at least one computing resource unit to the target clock frequency, and performing pooling in the target pooling layer based on the at least one computing resource unit having the target clock frequency.

Abstract: Embodiments of the present disclosure disclose a data transmission method and apparatus, and belong to the field of Internet technologies. The method includes: obtaining interaction information of a transmission link of a current moment; analyzing the interaction information, to obtain link status information corresponding to the interaction information; determining an available bandwidth for current data transmission according to the link status information that corresponds to the interaction information and link status information that corresponds to historical interaction information of the transmission link; and transmitting a data packet to a data receive end according to the available bandwidth. In the embodiments of the present disclosure, data transmission is performed based on the TCP Protocol, neither a data receive end nor a data transmit end needs to support an additional protocol, and applicability is relatively strong.

Abstract: A method and apparatus for controlling access to a hash-based disk is provided, the disk comprising a storage object, the storage object comprising a set of records and a hash value, the method comprising constructing a Bloom filter for the storage object; reading the set of records in the storage object; and filtering an access request to the storage object using the Bloom filter. In accordance with embodiments of the present invention, access requests to storage objects on the disk are filtered by a Bloom filter to reduce unnecessary accesses to the disk, and input and output accesses to the disk are reduced.

Abstract: A wear leveling method and apparatus and a storage medium are disclosed, the method including: performing error correction on data read from a physical block to obtain corrected data, and counting corrected bits in the corrected data to obtain the number of the corrected bits, where the data as read may be previously written to the physical block in a dynamic wear leveling manner and/or a static wear leveling manner, and the number of the corrected bits is negatively correlated with a residual service life of the physical block; detecting whether the obtained number of the corrected bits is more than a preset bit-number threshold value; and transferring data stored in the physical block, if the number of corrected bits is detected as more than the preset bit-number threshold value.

Abstract: Disclosed are an email sending and receiving method and a terminal. The sending method comprises: submitting an email text, and packaging, by coding, the email text and a storing ID of an enclosure uploaded in advance; determining whether an email receiver is a local domain account, and if yes, storing the email into a storage server; otherwise, obtaining the enclosure from the storage server according to the storing ID of the enclosure, recoding the enclosure and the email text into an email and then sending the email to an out-of-band server.

Abstract: The present invention discloses a data storage space processing method and processing system, and a data storage server. The data storage space processing method includes: dividing a disk and memory resource into tablets; dividing memory space of a tablet into different logical objects; and dividing, according to a fixed size, disk space of the tablet into multiple data blocks that are of a same size. According to the data storage space processing system and method provided in embodiments of the present invention, a disk and memory resource on a storage server is divided into independent tablets, and the tablets are used as basic service resource allocating and managing units, which can implement multiplexing of a single-node resource on multiple services. Besides, by using hybrid indexing and associated write combining and block recycling technologies, random write IOPS of a system is improved, and index memory space can also be significantly saved.

Abstract: A method and apparatus for controlling access to a hash-based disk is provided, the disk comprising a storage object, the storage object comprising a set of records and a hash value, the method comprising constructing a Bloom filter for the storage object; reading the set of records in the storage object; and filtering an access request to the storage object using the Bloom filter. In accordance with embodiments of the present invention, access requests to storage objects on the disk are filtered by a Bloom filter to reduce unnecessary accesses to the disk, and input and output accesses to the disk are reduced.

Abstract: Disclosed are an email sending and receiving method and a terminal. The sending method comprises: submitting an email text, and packaging, by coding, the email text and a storing ID of an enclosure uploaded in advance; determining whether an email receiver is a local domain account, and if yes, storing the email into a storage server; otherwise, obtaining the enclosure from the storage server according to the storing ID of the enclosure, recoding the enclosure and the email text into an email and then sending the email to an out-of-band server.