cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57760/sciencedb.05091
title: Structure design and analysis of RF ion source for negative ion source test facility
title: Structure design and analysis of RF ion source for negative ion source test facility

description: A negative ion source acts as a critical part in a neutral beam injector (NBI). A high current ion source is required for the high-power NBI. In this paper, a prototype radio frequency (RF) ion source and its test facility are developed in the Institute of Plasma Physics, Chinese Academy of Sciences, to demonstrate the key technology of the high-power negative ion source. The structure design of the RF negative ion source is presented, involving the designs of the ion source plasma generator and accelerator. The detailed structure design and analysis of the key parts of the ion source are also presented, such as the Faraday shield (FS) and accelerator grids. The fluid-thermal-structural coupling characteristics of the FS and grid are explored with different mechanisms of fluid pressure, RF power, and the structure type on the thermal stress. Then, the processing and manufacturing scheme of the FS and grids are also given. Finally, the results were presented with a manufactured three cooling channel FS. The experimental results prove that the developed structure design of the RF ion source is effective and reliable, and the correctness of finite element analysis is also verified by experimental data comparison.
description: A negative ion source acts as a critical part in a neutral beam injector (NBI). A high current ion source is required for the high-power NBI. In this paper, a prototype radio frequency (RF) ion source and its test facility are developed in the Institute of Plasma Physics, Chinese Academy of Sciences, to demonstrate the key technology of the high-power negative ion source. The structure design of the RF negative ion source is presented, involving the designs of the ion source plasma generator and accelerator. The detailed structure design and analysis of the key parts of the ion source are also presented, such as the Faraday shield (FS) and accelerator grids. The fluid-thermal-structural coupling characteristics of the FS and grid are explored with different mechanisms of fluid pressure, RF power, and the structure type on the thermal stress. Then, the processing and manufacturing scheme of the FS and grids are also given. Finally, the results were presented with a manufactured three cooling channel FS. The experimental results prove that the developed structure design of the RF ion source is effective and reliable, and the correctness of finite element analysis is also verified by experimental data comparison.
DOI: 10.57760/sciencedb.05062
title: Data set of Bacillus natto residue-free fermentation
title: Data set of Bacillus natto residue-free fermentation

description: The relevant data sets obtained by residue-free fermentation of vitamin K2 with Bacillus natto, including fermentation process curve of bacteria before and after transformation, optimization data of residue-free fermentation pretreatment technology, and original data of related redox potential detection results.
description: The relevant data sets obtained by residue-free fermentation of vitamin K2 with Bacillus natto, including fermentation process curve of bacteria before and after transformation, optimization data of residue-free fermentation pretreatment technology, and original data of related redox potential detection results.
DOI: 10.57760/sciencedb.05096
title: The code for numerical analysis of equilibrium solutions for axisymmetric plasmas with toroidal flow
title: 数值分析环向流动平衡位形的程序代码

description: In 2018, we developed a code to study numerically the plasma equilibria obtained by generalization of Solovev approach to the toroidal equilibrium of plasmas with arbitrary flows.
description: In 2018, we developed a code to study numerically the plasma equilibria obtained by generalization of Solovev approach to the toroidal equilibrium of plasmas with arbitrary flows.
DOI: 10.57760/sciencedb.05069
title: Simulations of NBI fast ion loss in the presence of toroidal field ripple on EAST
title: Simulations of NBI fast ion loss in the presence of toroidal field ripple on EAST

description: Simulation results of EAST NBI fast ion loss induced by toroidal ripple field包括存在波纹场和碰撞时NBI快离子的损失随时间的演化，损失区以及热负荷等（8组数据分别对应2D壁和3D壁边界条件下的4束NBI）。
description: Simulation results of EAST NBI fast ion loss induced by toroidal ripple field包括存在波纹场和碰撞时NBI快离子的损失随时间的演化，损失区以及热负荷等（8组数据分别对应2D壁和3D壁边界条件下的4束NBI）。
DOI: 10.57760/sciencedb.05073
title: Research on Excitation Current Control System of the 50 kA Superconducting Transformer
title: Research on Excitation Current Control System of the 50 kA Superconducting Transformer

description: Superconducting transformer, which used for power supply of the large current superconductor, is faced with the conductor sample current attenuation problem since the existence of joint resistance. A solution is proposed to solve this attenuation problem to make the conductor sample current controllable.The adaptive Proportion Integration Differentiation (PID) control strategy based on learning rates (η) Radial Basis Function (RBF) neural network (NN) is an improvement over the conventional PID algorithm. The algorithm is applied to obtain the optimal parameters for the PID controller to the working variations arising fromtransformer nonlinear dynamics. The controller system is carried out on the superconducting conductor test platform of the Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP). The results showed that the overall deviation of the system was within 0.2%. The performance of the proposed approach is validated bysuperconductor experiments under practical conditions
description: Superconducting transformer, which used for power supply of the large current superconductor, is faced with the conductor sample current attenuation problem since the existence of joint resistance. A solution is proposed to solve this attenuation problem to make the conductor sample current controllable.The adaptive Proportion Integration Differentiation (PID) control strategy based on learning rates (η) Radial Basis Function (RBF) neural network (NN) is an improvement over the conventional PID algorithm. The algorithm is applied to obtain the optimal parameters for the PID controller to the working variations arising fromtransformer nonlinear dynamics. The controller system is carried out on the superconducting conductor test platform of the Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP). The results showed that the overall deviation of the system was within 0.2%. The performance of the proposed approach is validated bysuperconductor experiments under practical conditions
DOI: 10.57760/sciencedb.05076
title: The evolution of properties and microstructure of Bi- 2212 wires after gamma-ray irradiation
title: The evolution of properties and microstructure of Bi- 2212 wires after gamma-ray irradiation

description: Among various high-temperature superconducting materials, Bi2Sr2CaCu2O8+x (Bi-2212) is considered as one of the most promising candidates to fabricate superconductors for magnetic confinement fusion reactors. Considering that the superconductors will be subject to irradiation in nuclear reactors, the effects of gamma-ray irradiation on the superconducting properties of Bi-2212 wires is studied in the present work. Critical current (Ic) tests have been done for Bi-2212 wires with different gamma-ray irradiation doses and the variation of Ic is correlated to the change of micro-structures. During the 12 T critical current (Ic) tests, the normalized Ic first rises to 1.15 then decreases to 0.89 with the increase of irradiation time. Results from X-ray diffraction (XRD), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS)indicate that defects are produced within the gamma-ray irradiated samples. From the images of high resolution transmission electron microscopy (HRTEM), amorphous structure in the gamma-ray irradiated sample is discovered as well.
description: Among various high-temperature superconducting materials, Bi2Sr2CaCu2O8+x (Bi-2212) is considered as one of the most promising candidates to fabricate superconductors for magnetic confinement fusion reactors. Considering that the superconductors will be subject to irradiation in nuclear reactors, the effects of gamma-ray irradiation on the superconducting properties of Bi-2212 wires is studied in the present work. Critical current (Ic) tests have been done for Bi-2212 wires with different gamma-ray irradiation doses and the variation of Ic is correlated to the change of micro-structures. During the 12 T critical current (Ic) tests, the normalized Ic first rises to 1.15 then decreases to 0.89 with the increase of irradiation time. Results from X-ray diffraction (XRD), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS)indicate that defects are produced within the gamma-ray irradiated samples. From the images of high resolution transmission electron microscopy (HRTEM), amorphous structure in the gamma-ray irradiated sample is discovered as well.
DOI: 10.57760/sciencedb.05075
title: Preliminary neutronics analysis of neutron shielding for CFETR with 2GW fusion power
title: 2GW 功率下 CFETR 中子屏蔽的 初步中子学研究

description: The CAD model is established by CATIA, and the neutronics model is established by MCNP. In addition, the data set also includes the distribution data of neutron shielding related parameters, neutron flux density and nuclear heat density with FW distance.
description: The CAD model is established by CATIA, and the neutronics model is established by MCNP. In addition, the data set also includes the distribution data of neutron shielding related parameters, neutron flux density and nuclear heat density with FW distance.
DOI: 10.57760/sciencedb.05085
title: Numerical results on the loss of fast ions produced by minority ion cyclotron resonance heating in EAST
title: Numerical results on the loss of fast ions produced by minority ion cyclotron resonance heating in EAST

description: Results from Monte-Carlo simulations of loss of fast ions produced by minority ion cyclotron resonance heating in EAST
description: Results from Monte-Carlo simulations of loss of fast ions produced by minority ion cyclotron resonance heating in EAST
DOI: 10.57760/sciencedb.05081
title: Broadband Single-Chip Full Stokes Polarization-Spectral Imaging Based on All-Dielectric Spatial Multiplexing Metalens
title: Broadband Single-Chip Full Stokes Polarization-Spectral Imaging Based on All-Dielectric Spatial Multiplexing Metalens

description: Compared with intensity imaging, more inherent information of objects can be obtained by polarization and multispectral imaging. Here, a broadband and highly integrated single-chip full Stokes polarization-spectral (FSPS) imaging is demonstrated using all-dielectric spatially multiplexed metalens (SMM) in the wavelength band from 1400 to 1700 nm. The proposed FSPS-SMM is composed of three sets of off-axis sub-metalens simultaneously working for pairs of 0°/90°, 45°/135° linear polarization (LP), and left-handed/right-handed circular polarization (CP), respectively. Experimental results show that the optical resolution of each sub-metalens of the fabricated FSPS-SMM reaches the diffraction limit of the full-aperture metalens although the area of each sub-metalens is only 1/3 of the entire metalens, the averaged polarization extinction ratio of both LP and CP reaches 32.8:1, and the energy efficiency reaches 81.8% at the design wavelength and 60% averagely in the whole 300 nm bandwidth, which breaks the 50% limit of conventional polarizer-based methods. The proposed design provides a new idea for high-efficiency and high-resolution full Stokes polarization-spectral imaging and multichannel information processing.
description: Compared with intensity imaging, more inherent information of objects can be obtained by polarization and multispectral imaging. Here, a broadband and highly integrated single-chip full Stokes polarization-spectral (FSPS) imaging is demonstrated using all-dielectric spatially multiplexed metalens (SMM) in the wavelength band from 1400 to 1700 nm. The proposed FSPS-SMM is composed of three sets of off-axis sub-metalens simultaneously working for pairs of 0°/90°, 45°/135° linear polarization (LP), and left-handed/right-handed circular polarization (CP), respectively. Experimental results show that the optical resolution of each sub-metalens of the fabricated FSPS-SMM reaches the diffraction limit of the full-aperture metalens although the area of each sub-metalens is only 1/3 of the entire metalens, the averaged polarization extinction ratio of both LP and CP reaches 32.8:1, and the energy efficiency reaches 81.8% at the design wavelength and 60% averagely in the whole 300 nm bandwidth, which breaks the 50% limit of conventional polarizer-based methods. The proposed design provides a new idea for high-efficiency and high-resolution full Stokes polarization-spectral imaging and multichannel information processing.
DOI: 10.57760/sciencedb.05095
title: Synthesis of Disulfide Surrogate Peptides Incorporating Large-Span Surrogate Bridges Through a Native-Chemical-Ligation-Assisted Diaminodiacid Strategy
title: Synthesis of Disulfide Surrogate Peptides Incorporating Large-Span Surrogate Bridges Through a Native-Chemical-Ligation-Assisted Diaminodiacid Strategy

description: 多肽Hm-3和KIIIA的化学位移数据和三维结构PDB数据
description: 多肽Hm-3和KIIIA的化学位移数据和三维结构PDB数据
DOI: 10.57760/sciencedb.05092
title: Design and Analysis of CFETR CSMC Cooling Loop date set
title: CFETR CSMC 冷却回路设计与分析的数据集

description: Supercritical helium cooling capacity in the CSMC cooling loop versus heat load, temperature and mass flow rate variations in the cooling loop at different moments.
description: Supercritical helium cooling capacity in the CSMC cooling loop versus heat load, temperature and mass flow rate variations in the cooling loop at different moments.
DOI: 10.57760/sciencedb.05093
title: Data set of coproducing MK7 and nattokinase by Bacillus subtilis natto
title: Data set of coproducing MK7 and nattokinase by Bacillus subtilis natto

description: The method for simultaneous production of nattokinase and vitamin K2 by Bacillus natto fermentation was developed, including the fermentation process curve of Bacillus natto under different rotating speeds and aeration conditions, and the fermentation process curve of Bacillus natto in two stages.
description: The method for simultaneous production of nattokinase and vitamin K2 by Bacillus natto fermentation was developed, including the fermentation process curve of Bacillus natto under different rotating speeds and aeration conditions, and the fermentation process curve of Bacillus natto in two stages.
DOI: 10.57760/sciencedb.05102
title: Critical Current Under Uniaxial Strain on High-Pressure Heat Treatment Bi-2212 Round Wire
title: Critical Current Under Uniaxial Strain on High-Pressure Heat Treatment Bi-2212 Round Wire

description: China Fusion Engineering Test Reactor project (CFETR), the next generation of Tokamak, has been incorporated into the important development of nuclear fusion in the future. Compared to the low temperature superconducting materials, Bi2212 is one of the most promising superconducting materials due to the high irreversible field and outstanding current-carrying capacity. In particular, its critical properties can be improved dramatically by high-pressure heat treatment, which could enlarge its application range. The critical current performance of Bi-2212 round wire (RW) with high-pressure heat treatment under uniaxial strain are studied at 4.2 K in 12 T background field at Institute of Plasma Physics, Chinese Academy of Science (ASIPP). All samples are provided by Northwest Institute for Non-ferrous Metal Research (NIN) in China with new techniques. The results showed that samples with 1 bar pressure heat treatment presented a more drastic degradation under compressive and tensile stress than that the samples heat-treated with 30 and 50 bar pressure. In order to study the influence of different thermal contraction coefficient between the substrate and sample, two springs with different materials were used for the experiment. According to the results, it was found that Cu-Be alloy spring is more compatible for Bi-2212 RW than Ti-6Al-4V alloy spring.
description: China Fusion Engineering Test Reactor project (CFETR), the next generation of Tokamak, has been incorporated into the important development of nuclear fusion in the future. Compared to the low temperature superconducting materials, Bi2212 is one of the most promising superconducting materials due to the high irreversible field and outstanding current-carrying capacity. In particular, its critical properties can be improved dramatically by high-pressure heat treatment, which could enlarge its application range. The critical current performance of Bi-2212 round wire (RW) with high-pressure heat treatment under uniaxial strain are studied at 4.2 K in 12 T background field at Institute of Plasma Physics, Chinese Academy of Science (ASIPP). All samples are provided by Northwest Institute for Non-ferrous Metal Research (NIN) in China with new techniques. The results showed that samples with 1 bar pressure heat treatment presented a more drastic degradation under compressive and tensile stress than that the samples heat-treated with 30 and 50 bar pressure. In order to study the influence of different thermal contraction coefficient between the substrate and sample, two springs with different materials were used for the experiment. According to the results, it was found that Cu-Be alloy spring is more compatible for Bi-2212 RW than Ti-6Al-4V alloy spring.
DOI: 10.57760/sciencedb.05105
title: Summary of NbTi Strand Performance for ITER PF Conductors in China
title: Summary of NbTi Strand Performance for ITER PF Conductors in China

description: China, who was in charge of most of the poloidal field (PF) conductor unit lengths manufacturing for the ITER Project, has supplied all the required PF conductors and finished the PF package successfully. Around 130 t of NbTi strands were supplied and used for the PF conductors. During the package execution process, the Chinese Domestic Agency (CNDA) has organized the verification for the NbTi strand acceptance tests based on the requirements of the ITER procurement arrangement (PA). The verification tasks for NbTi strands were undertaken by the Institute of Plasma Physics Chinese Academy of Sciences (ASIPP). In total, about 550 billets of NbTi strands have been verified and supplied for the PF conductors. The verification levels fit the ITER PA requirements. The test results showed that the quality of the NbTi strands has been well controlled. In addition, in order to supply essential data for the conductor performance prediction and analysis, a full critical current Ic characterization of the NbTi strands, which requires a measurement of Ic versus field, B and temperature, T, has been obtained using the test facilities from the National Institute of Standards and Technology (NIST) and ASIPP. The parameterization using the Bottura scaling law for the strand with Ic close to the average value from the verification results has been analyzed.
description: China, who was in charge of most of the poloidal field (PF) conductor unit lengths manufacturing for the ITER Project, has supplied all the required PF conductors and finished the PF package successfully. Around 130 t of NbTi strands were supplied and used for the PF conductors. During the package execution process, the Chinese Domestic Agency (CNDA) has organized the verification for the NbTi strand acceptance tests based on the requirements of the ITER procurement arrangement (PA). The verification tasks for NbTi strands were undertaken by the Institute of Plasma Physics Chinese Academy of Sciences (ASIPP). In total, about 550 billets of NbTi strands have been verified and supplied for the PF conductors. The verification levels fit the ITER PA requirements. The test results showed that the quality of the NbTi strands has been well controlled. In addition, in order to supply essential data for the conductor performance prediction and analysis, a full critical current Ic characterization of the NbTi strands, which requires a measurement of Ic versus field, B and temperature, T, has been obtained using the test facilities from the National Institute of Standards and Technology (NIST) and ASIPP. The parameterization using the Bottura scaling law for the strand with Ic close to the average value from the verification results has been analyzed.
DOI: 10.57760/sciencedb.05108
title: Raw I-V traces
title: Raw I-V traces

description: Raw I-V traces used in this work
description: Raw I-V traces used in this work
DOI: 10.57760/sciencedb.05107
title: Dataset of effect of static magnetic feld on morphology and growth metabolism of Flavobacterium sp. m1‑14
title: 稳态磁场对黄杆菌形态和生长代谢的影响数据集

description: Under different treatment conditions, the biomass and the output of vitamin K2 were measured at 6,12,24,48,72,96,120 hours of fermentation, and the changes of pH and DO in the whole fermentation process were detected to determine the best treatment conditions.
description: Under different treatment conditions, the biomass and the output of vitamin K2 were measured at 6,12,24,48,72,96,120 hours of fermentation, and the changes of pH and DO in the whole fermentation process were detected to determine the best treatment conditions.
DOI: 10.57760/sciencedb.05109
title: FVP- type 2 diabetes
title: FVP- type 2 diabetes

description: sheet 1-3: Figure 1
description: sheet 1-3: Figure 1
DOI: 10.57760/sciencedb.05114
title: The code for the effects of toroidal equilibrium flow on the stabilization of ballooning modes in tokamaks in 2019
title: 2019年数值分析流动平衡对托卡马克等离子体平衡稳定性分析的程序代码

description: The effects of toroidal flows on ballooning mode instabilities are studied by using the plasma equilibrium under the influence of the toroidal flow is reconstructed by solving the modified Grad–Shafranov equation numerically fixing the profiles of the quasi-toroidal magnetic field, quasi-density, and quasi-pressure from EAST data.
description: The effects of toroidal flows on ballooning mode instabilities are studied by using the plasma equilibrium under the influence of the toroidal flow is reconstructed by solving the modified Grad–Shafranov equation numerically fixing the profiles of the quasi-toroidal magnetic field, quasi-density, and quasi-pressure from EAST data.
DOI: 10.57760/sciencedb.05111
title: 2018_JianminXIAO_ACS AMI
title: 2018_JianminXIAO_ACS AMI

description: Fabricating High-Performance T2‑Weighted Contrast Agents via Adjusting Composition and Size of Nanomagnetic Iron Oxide
description: Fabricating High-Performance T2‑Weighted Contrast Agents via Adjusting Composition and Size of Nanomagnetic Iron Oxide