Abstract: A preparation method for an easily-releasable concrete test mould with an inner wall having ultra-hydrophobic/ultra-smooth performance includes spin-coating a negative photoresist and obtaining a substrate with an inner wall having inverted-trapezoid microstructures by ultraviolet lithography; depositing a metal layer by vacuum evaporation; removing the metal layer on an upper surface of the inverted trapezoid microstructures of the inner wall of the substrate; obtaining a micro-nano hierarchical structure on the metal layer surrounding the inverted trapezoid microstructures of the inner wall of the substrate; spin-coating a molten wax and cooling down to room temperature, and filling the solid wax into micron-level pores between the inverted trapezoid structures; spin-coating a positive photoresist and performing ultraviolet lithography; g.

Abstract: A three-dimensional (3D) memory device includes a stack structure including interleaved first conductive layers and first dielectric layers, and a channel structure extending through the stack structure along a first direction in contact with a first semiconductor layer at a bottom portion of the channel structure. The channel structure includes a semiconductor channel, and a memory film over the semiconductor channel. The semiconductor channel includes an angled structure, and a first width of the semiconductor channel at the bottom portion of the channel structure below the angled structure is smaller than a second width of the semiconductor channel at an upper portion of the channel structure above the angled structure.

Abstract: Disclosed are a device of complex gas mixture detection based on optical-path-adjustable spectrum detection and a method therefor, and the device includes: a light source configured for generating an incident beam and emitting the incident beam into an optical gas cell; the optical gas cell, including a cavity configured for accommodating a gas sample, and a reflection module group configured for reflecting the incident beam and a track arranged in the cavity, where the track is consistent with a light path of the light beam in the cavity; a detector module that is connected with the track in a relatively movable manner and is configured for receiving light beams and obtaining spectral data, where an optical path is changed by moving the detector module relative to the track; and a data acquisition unit that is configured for acquiring the spectral data obtained by the detector module.

Abstract: The present disclosure provides methods, drug combinations and kits for treating, ameliorating, reversing and/or preventing a Helicobacter pylori (H. pylori) infection in a patient in need thereof.

Abstract: Automatic file system capacity management techniques are provided using file system utilization prediction. One method comprises obtaining input data representing a utilization of a storage capacity of a file system of a given storage system; predicting a future utilization of the storage capacity of the file system based on a portion of the obtained input data; and automatically adjusting the storage capacity of the file system based at least in part on a result of a comparison of the predicted utilization of the storage capacity to a current utilization of the storage capacity. The comparison of the predicted utilization to a current utilization of the storage capacity may comprise comparing the current utilization of the storage capacity to the predicted utilization of the storage capacity for at least first and second time periods following a current time period to determine a trend of the utilization of the storage capacity.

Abstract: A memory device includes a stack structure, channel structures, and a slit structure. The stack structure includes interleaved conductive layers and dielectric layers, and the conductive layers include a plurality of word lines. Each of the channel structures extends vertically through the stack structure. The slit structure extends vertically through the stack structure. An outer region of the stack structure includes a staircase structure, and the interleaved conductive layers and dielectric layers in a bottom portion of the stack structure are wider than the interleaved conductive layers and dielectric layers in a top portion of the stack structure. A first outer width of the slit structure in the bottom portion of the stack structure is greater than a second outer width of the slit structure in the top portion of the stack structure.

Abstract: A high-grafting density cyclic comb shaped polymer and its preparation method therefor. The method comprises the following steps: 1) synthesizing linear poly(pentafluorophenyl 4-vinylbenzoate) (l-PPF4VB4.0k); 2) performing photo-induced cyclization on the linear polymer to prepare the cyclic polymer (c-PPF4VB4.0k); 3) performing post modification on the cyclic polymer c-PPF4VB4.0k by using small molecules to prepare a functionalized cyclic polymer (c-P1); 4) then performing polymer post modification on the cyclic polymer (c-P1) by using an efficient click reaction to construct the high-grafting density cyclic comb shaped polymer (c-P1-g-PS); and 5) directly performing polymer post modification on the cyclic polymer c-PPF4VB4.0k by using macromolecules to construct a high-grafting density cyclic comb shaped polymer (c-PPF4VB4.0k-g-PEG), the obtained cyclic comb shaped polymer still remaining the characteristic of a narrow molecular weight distribution.

Abstract: The present disclosure relates to an additive used in a methionine preparation process, and a methionine preparation method. The additive provided by the present disclosure is a mixture containing components A, B, and C; component A has a structure represented by the following general formula (1); component B has a structure represented by the following general formula (2); component C is silicone oil; RCON(CH3)CH2CH2SO3Na (1). The methionine preparation method provided in the present invention comprises subjecting methionine to crystallization and/or recrystallization in the presence of the additive provided by the present disclosure. The additive provided by the present disclosure results in uniform emulsification, has good stability, can be used stably for a long time, and is suitable for a continuous crystallization process. The prepared methionine crystal has a good crystal form, a large bulk density, and good flowability.

Abstract: The present disclosure relates to a dense boron nitride ceramic with high plasticity and high elasticity and the preparation process thereof. The preparation process includes the following steps: A) weighing a predetermined amount of spherical boron nitride nano-powders with onion-like structure, pre-pressing them into a pre-pressed body and putting the pre-pressed body into a sintering mold; B) putting the pre-pressed body obtained in step A) together with the sintering mold into a spark plasma sintering apparatus or a hot-pressing sintering apparatus for sintering; and C) taking out the mold after cooling, and removing the mold to obtain the boron nitride dense ceramic block with high plasticity and high elasticity. According to the present invention, a boron nitride ceramic with high strength and high plasticity is obtained via sintering spherical boron nitride nano-powders with onion-like structure.

Abstract: A high-grafting density cyclic comb shaped polymer and its preparation method therefor. The method comprises the following steps: 1) synthesizing linear poly(pentafluorophenyl 4-vinylbenzoate) (l-PPF4VB4.0k); 2) performing photo-induced cyclization on the linear polymer to prepare the cyclic polymer (c-PPF4VB4.0k); 3) performing post modification on the cyclic polymer c-PPF4VB4.0k by using small molecules to prepare a functionalized cyclic polymer (c-P1); 4) then performing polymer post modification on the cyclic polymer (c-P1) by using an efficient click reaction to construct the high-grafting density cyclic comb shaped polymer (c-P1-g-PS); and 5) directly performing polymer post modification on the cyclic polymer c-PPF4VB4.0k by using macromolecules to construct a high-grafting density cyclic comb shaped polymer (c-PPF4VB4.0k-g-PEG), the obtained cyclic comb shaped polymer still remaining the characteristic of a narrow molecular weight distribution.

Abstract: The present disclosure relates to a dense boron nitride ceramic with high plasticity and high elasticity and the preparation process thereof. The preparation process includes the following steps: A) weighing a predetermined amount of spherical boron nitride nano-powders with onion-like structure, pre-pressing them into a pre-pressed body and putting the pre-pressed body into a sintering mold; B) putting the pre-pressed body obtained in step A) together with the sintering mold into a spark plasma sintering apparatus or a hot-pressing sintering apparatus for sintering; and C) taking out the mold after cooling, and removing the mold to obtain the boron nitride dense ceramic block with high plasticity and high elasticity. According to the present invention, a boron nitride ceramic with high strength and high plasticity is obtained via sintering spherical boron nitride nano-powders with onion-like structure.