cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57760/sciencedb.04059
title: Effect of Fe3O4@PDA morphology on the U(VI) entrapment from aqueous solution-dataset
title: Effect of Fe3O4@PDA morphology on the U(VI) entrapment from aqueous solution-原始数据

description: Two kinds of core–shell Fe3O4@PDA materials with different morphologies were successfully prepared by a simple in situ polymerization method based on two kinds of pristine Fe3O4 spheres, which were obtained by hydrothermal method. Among the four obtained samples, Fe3O4@PDA porous nano-spheres (MNS-4) have the best U(VI) entrapment performance, which can not only be owing to the structure characteristics (higher porosity and lower density) but also to the PDA shell with large amount of functional groups. Additionally, the maximum removal capacity of MNS-4 for U(VI) entrapment can be of 193.27 mg·g−1 at 298 K, which exceeds the adsorption capacity of most other reported magnetic materials. Moreover, the solution pH values have a significant effect on the adsorption performance of the adsorbents for U(VI) pre-concentration while that originated from ionic strength can be negligible, suggesting that the adsorption process can be achieved through inner-sphere surface complexation. Thermodynamic studies reveal that the U(VI) adsorption process is exothermic and spontaneous. The analysis of adsorption mechanism indicates that U(VI) pre-concentration process can be achieved by the interactions between OH groups, pyridinic N and CNH2 and U(VI)
description: Two kinds of core–shell Fe3O4@PDA materials with different morphologies were successfully prepared by a simple in situ polymerization method based on two kinds of pristine Fe3O4 spheres, which were obtained by hydrothermal method. Among the four obtained samples, Fe3O4@PDA porous nano-spheres (MNS-4) have the best U(VI) entrapment performance, which can not only be owing to the structure characteristics (higher porosity and lower density) but also to the PDA shell with large amount of functional groups. Additionally, the maximum removal capacity of MNS-4 for U(VI) entrapment can be of 193.27 mg·g−1 at 298 K, which exceeds the adsorption capacity of most other reported magnetic materials. Moreover, the solution pH values have a significant effect on the adsorption performance of the adsorbents for U(VI) pre-concentration while that originated from ionic strength can be negligible, suggesting that the adsorption process can be achieved through inner-sphere surface complexation. Thermodynamic studies reveal that the U(VI) adsorption process is exothermic and spontaneous. The analysis of adsorption mechanism indicates that U(VI) pre-concentration process can be achieved by the interactions between OH groups, pyridinic N and CNH2 and U(VI)
DOI: 10.57760/sciencedb.04061
title: Study on the Determination of Nitrate with UV First DerivativeSpectrum under Turbidity Interference
title: 浊度干扰下硝酸盐浓度紫外导数光谱检测方法研究

description: The standard solutions of formalazid (5、10、15、20、25、30NTU), sodium nitrate (0.5、1、2、3、4、5mg/L), kaolin (10、30、50mg/L) and potassium nitrate (0.5、1、2、3、4、5mg/L) were prepared in the laboratory. UV2550 spectrophotometer was used to measure the absorption spectra of formazide solution, sodium nitrate solution and their mixed solutions in the wavelength range of 190-300nm. The absorption spectra of different solutions were processed with Origin Software for the first derivative, and the spectral characteristics of turbidity and nitrate ultraviolet absorption of the first derivative were compared. The wavelength range of 220-230nm was selected as the spectral analysis interval, and 30 different concentrations of mixed formalazide and sodium nitrate solutions were used as training samples. The partial least squares quantitative analysis model of nitrate was established on Matlab Software. UV2550 spectrophotometer was used again to measure absorption spectra of kaolin solutions, potassium nitrate standard solutions and their mixed solutions in the wavelength of 190-300 nm, and the obtained absorption spectra were processed with the first derivative by Origin Software. The established partial least squares model was used to predict the nitrate concentrations in the mixed solutions of kaolin and potassium nitrate.
description: The standard solutions of formalazid (5、10、15、20、25、30NTU), sodium nitrate (0.5、1、2、3、4、5mg/L), kaolin (10、30、50mg/L) and potassium nitrate (0.5、1、2、3、4、5mg/L) were prepared in the laboratory. UV2550 spectrophotometer was used to measure the absorption spectra of formazide solution, sodium nitrate solution and their mixed solutions in the wavelength range of 190-300nm. The absorption spectra of different solutions were processed with Origin Software for the first derivative, and the spectral characteristics of turbidity and nitrate ultraviolet absorption of the first derivative were compared. The wavelength range of 220-230nm was selected as the spectral analysis interval, and 30 different concentrations of mixed formalazide and sodium nitrate solutions were used as training samples. The partial least squares quantitative analysis model of nitrate was established on Matlab Software. UV2550 spectrophotometer was used again to measure absorption spectra of kaolin solutions, potassium nitrate standard solutions and their mixed solutions in the wavelength of 190-300 nm, and the obtained absorption spectra were processed with the first derivative by Origin Software. The established partial least squares model was used to predict the nitrate concentrations in the mixed solutions of kaolin and potassium nitrate.
DOI: 10.57760/sciencedb.04076
title: Vacuum chamber system design and analysis diagram of engineering test platform for divertor components
title: 偏滤器部件工程测试平台真空腔体系统设计及分析图

description: Vacuum chamber system design and analysis diagram of engineering test platform for divertor componentsGeneral layout of vacuum chamber systemVacuum chamber structureCylinder structure of vacuum chamberWater cooling analysis of vacuum chamberVacuum chamber end cover structureAnalysis of Vacuum Chamber StructureInternal component adjustment platform structureFlow chart of vacuum chamber water cooling system
description: Vacuum chamber system design and analysis diagram of engineering test platform for divertor componentsGeneral layout of vacuum chamber systemVacuum chamber structureCylinder structure of vacuum chamberWater cooling analysis of vacuum chamberVacuum chamber end cover structureAnalysis of Vacuum Chamber StructureInternal component adjustment platform structureFlow chart of vacuum chamber water cooling system
DOI: 10.6084/m9.figshare.28877102
title: Dataset of temperature, salinity, nutrients in the Changjiang estuary, East China Sea.xlsx

description: The file contains temperature, salinity, and nutrients data during an hypoxia event in the CE in August 2016.
DOI: 10.57760/sciencedb.04073
title: A comparison of the efficiency of different urease inhibitors and their effects on soil prokaryotic community in a short-term incubation experiment
title: 通过短期培养试验中比较不同脲酶抑制剂对土壤原核生物群落的影响

description: Urease inhibitors are widely used in agricultural soils to reduce nitrogen loss, but their effects on soil microbial communities remain largely unknown. In a microcosm incubation experiment the urease inhibitor N-(n-butyl)thiophosphoric triamide (NBPT) was more effective than hydroquinone (HQ) in inhibiting urease in the studied soil, although both altered the soil prokaryotic community. The abundance of ureolytic microbes in the urea-supplemented soil was similar to that in the Control when urea was degraded. However, urease inhibitors, especially NBPT, enriched ureolysis groups. Thus, although urease inhibitors can temporarily suppress soil urease activity, they may result in a microbial community with enriched ureolytic groups, thereby increasing the difficulty of reducing nitrogen loss through ammonia volatilization.
description: Urease inhibitors are widely used in agricultural soils to reduce nitrogen loss, but their effects on soil microbial communities remain largely unknown. In a microcosm incubation experiment the urease inhibitor N-(n-butyl)thiophosphoric triamide (NBPT) was more effective than hydroquinone (HQ) in inhibiting urease in the studied soil, although both altered the soil prokaryotic community. The abundance of ureolytic microbes in the urea-supplemented soil was similar to that in the Control when urea was degraded. However, urease inhibitors, especially NBPT, enriched ureolysis groups. Thus, although urease inhibitors can temporarily suppress soil urease activity, they may result in a microbial community with enriched ureolytic groups, thereby increasing the difficulty of reducing nitrogen loss through ammonia volatilization.
DOI: 10.57760/sciencedb.04086
title: Thermal analysis of EAST neutral beam injectors for long-pulse beam operation
title: Thermal analysis of EAST neutral beam injectors for long-pulse beam operation

description: Two sets of neutral beam injectors (NBI-1 and NBI-2) have been mounted on EAST tokamak since 2014. NBI-1 and NBI-2 are co-direction and counter-direction, respectively. As in-depth physics and engineering study of EAST, the ability of long pulse beam injection should be required in the NBI system. For neutral beam injector, the most important and difficult thing, which should be overcome, is heat removal capacity of heat loaded components for long pulse beam extraction. In this article, the thermal state of the components of EAST NBI is investigated using water flow calorimetry and thermocouple temperatures. Results show that (1) operation parameters have an obvious influence on the heat deposited on the inner components of beamline, (2) suitable operation parameter can decrease the head loading effectively and obtain longer beam pulse length; (3) under the cooling water pressure of 0.25MPa, the predicted maximum beam pulse length will be up to 260 s with 50keV beam energy by a duty factor of 0.5. The results present that in this regard the EAST NBI-1 system has the ability of long pulse beam injection.
description: Two sets of neutral beam injectors (NBI-1 and NBI-2) have been mounted on EAST tokamak since 2014. NBI-1 and NBI-2 are co-direction and counter-direction, respectively. As in-depth physics and engineering study of EAST, the ability of long pulse beam injection should be required in the NBI system. For neutral beam injector, the most important and difficult thing, which should be overcome, is heat removal capacity of heat loaded components for long pulse beam extraction. In this article, the thermal state of the components of EAST NBI is investigated using water flow calorimetry and thermocouple temperatures. Results show that (1) operation parameters have an obvious influence on the heat deposited on the inner components of beamline, (2) suitable operation parameter can decrease the head loading effectively and obtain longer beam pulse length; (3) under the cooling water pressure of 0.25MPa, the predicted maximum beam pulse length will be up to 260 s with 50keV beam energy by a duty factor of 0.5. The results present that in this regard the EAST NBI-1 system has the ability of long pulse beam injection.
DOI: 10.57760/sciencedb.04087
title: Turbidity compensation method based on Mie scattering theory for water chemical oxygen demand determination by UV-Vis spectrometry
title: Turbidity compensation method based on Mie scattering theory for water chemical oxygen demand determination by UV-Vis spectrometry

description: The COD standardsolutions (5,10,15,20,25,30,35,40,45,50mg/L) and turbidity standard solutions (10,20,30,40,50NTU) were prepared in the laboratory. UV2550 spectrophotometer was used to measure absorption spectra of COD, turbidity solutions, and their mixed solutions in the wavelength range of 220–700nm. Turbidity compensation models based on Mie scattering theory for different solutions were established by Matlab Software. On this basis, the COD prediction model of mixed solutions before and after turbidity compensation was established by Matlab software again, and the results of predcited turbidity were compared with other turbidity compensation methods (350nm PC, dervative method, improved MSC). Moreover, 5 different water samples were collected from Swan Lake Park (Hefei, China) in 2020 to verify the effectiveness of the method.
description: The COD standardsolutions (5,10,15,20,25,30,35,40,45,50mg/L) and turbidity standard solutions (10,20,30,40,50NTU) were prepared in the laboratory. UV2550 spectrophotometer was used to measure absorption spectra of COD, turbidity solutions, and their mixed solutions in the wavelength range of 220–700nm. Turbidity compensation models based on Mie scattering theory for different solutions were established by Matlab Software. On this basis, the COD prediction model of mixed solutions before and after turbidity compensation was established by Matlab software again, and the results of predcited turbidity were compared with other turbidity compensation methods (350nm PC, dervative method, improved MSC). Moreover, 5 different water samples were collected from Swan Lake Park (Hefei, China) in 2020 to verify the effectiveness of the method.
DOI: 10.57760/sciencedb.04093
title: The cloud fraction data from the Dual-band All-sky imager
title: 双波段全天空成像仪的云量观测数据

description: This is the cloud fraction collected by the Dual-band all-sky imager from March 8 to May 31, 2019 at the Baoshan meteorological Bureau, Shanghai during the observation experiment and the manual cloud observation data
description: This is the cloud fraction collected by the Dual-band all-sky imager from March 8 to May 31, 2019 at the Baoshan meteorological Bureau, Shanghai during the observation experiment and the manual cloud observation data
DOI: 10.57760/sciencedb.04091
title: RNA-seq data of zebrafish wildtype and nanog mutant embryos at 6 hpf
title: RNA-seq data of zebrafish wildtype and nanog mutant embryos at 6 hpf

description: Two hundred embryos at 6 hpf of either WT or MZnanog were divided into two groups as replicates. The RNA was extracted using Trizol according to the manufacturer’s manual. The RNA samples were quantified and integrity was assessed using the RNA Nano 6000 Assay Kit of the Bioanalyzer 2100 system (Agilent Technologies, CA, USA). A total amount of 3 μg RNA per sample was used as input material for the RNA sample preparations. Sequencing libraries were generated using NEBNext® Ultra™ RNA Library Prep Kit for Illumina® (NEB, USA) following manufacturer’s recommendations and index codes were added to attribute sequences to each sample. Sequencing was performed on Illumina Miseq with read length of 100 bp single-end. 
description: Two hundred embryos at 6 hpf of either WT or MZnanog were divided into two groups as replicates. The RNA was extracted using Trizol according to the manufacturer’s manual. The RNA samples were quantified and integrity was assessed using the RNA Nano 6000 Assay Kit of the Bioanalyzer 2100 system (Agilent Technologies, CA, USA). A total amount of 3 μg RNA per sample was used as input material for the RNA sample preparations. Sequencing libraries were generated using NEBNext® Ultra™ RNA Library Prep Kit for Illumina® (NEB, USA) following manufacturer’s recommendations and index codes were added to attribute sequences to each sample. Sequencing was performed on Illumina Miseq with read length of 100 bp single-end.
DOI: 10.57760/sciencedb.04098
title: Multi-coupled commutation analysis in EAST poloidal field quench protection circuits based on fuse model
title: Multi-coupled commutation analysis in EAST poloidal field quench protection circuits based on fuse model

description: figure
description: figure
DOI: 10.57760/sciencedb.04101
title: Hydrogen isotope permeation and retention behavior in the CoCrFeMnNi high-entropy alloy
title: Hydrogen isotope permeation and retention behavior in the CoCrFeMnNi high-entropy alloy

description: Owing to its excellent properties, high-entropy alloys (HEAs) have been regarded as a kind of promising candidate structural material for nuclear devices. For the safety concern, it is vital to figure out the compatibility of hydrogen isotopes with the HEAs. ln this work, the hydrogen isotope permeation and retention behavior of a representative HEA, CoCrFeMnNi, has been mainly checked by a gas-driven permeation device and a thermal desorption spectra device. The hydrogen isotope permeation parameters have been obtained, which are quite similar to those of the 316L austenitic steels. The hydrogen isotope retention behavior has been compared with that for a reduced activation ferriticjmartensitic steel, and the relatively high hydrogen isotope inventory in HEA has been explained by crystalline structure and high density of hydrogen trapping site.
description: Owing to its excellent properties, high-entropy alloys (HEAs) have been regarded as a kind of promising candidate structural material for nuclear devices. For the safety concern, it is vital to figure out the compatibility of hydrogen isotopes with the HEAs. ln this work, the hydrogen isotope permeation and retention behavior of a representative HEA, CoCrFeMnNi, has been mainly checked by a gas-driven permeation device and a thermal desorption spectra device. The hydrogen isotope permeation parameters have been obtained, which are quite similar to those of the 316L austenitic steels. The hydrogen isotope retention behavior has been compared with that for a reduced activation ferriticjmartensitic steel, and the relatively high hydrogen isotope inventory in HEA has been explained by crystalline structure and high density of hydrogen trapping site.
DOI: 10.57760/sciencedb.04106
title: A commutation analytical model for quench protection of the CFETR central solenoid model coil
title: A commutation analytical model for quench protection of the CFETR central solenoid model coil

description: Figures and data
description: Figures and data
DOI: 10.57760/sciencedb.04116
title: Feasibility Analysis of 1D Carbon Material In Application of Negative Particle Beam Diagnostics
title: Feasibility Analysis of 1D Carbon Material In Application of Negative Particle Beam Diagnostics

description: An important feature of China Fusion Engineering Test Reactor (CFETR) project is represented by the additional heating obtained from the injection of neutral beams based on accelerated negative ions. For the neutral beams based on negative ions, the most important measurements are beam uniformity, beamlet divergence and stripping losses. According to the CFETR requirement, the maximum allowed beam divergence angle and beam non-uniformity are 6 mrad and ±10%, respectively. As 1D carbon tiles have large ratio between perpendicular conductivity and parallel conductivity and high stability, they can be used for beam uniformity and beamlet divergence measurement. This paper presents the investigation of the influence on the response of 1D carbon tile having the thermal characteristics and features of some dedicated diagnostics. Simulations show that it will be possible to verify experimentally whether the beam meets the requirement about the maximum allowed value. This work lays a foundation for design and application of high precision beam diagnostic targets.
description: An important feature of China Fusion Engineering Test Reactor (CFETR) project is represented by the additional heating obtained from the injection of neutral beams based on accelerated negative ions. For the neutral beams based on negative ions, the most important measurements are beam uniformity, beamlet divergence and stripping losses. According to the CFETR requirement, the maximum allowed beam divergence angle and beam non-uniformity are 6 mrad and ±10%, respectively. As 1D carbon tiles have large ratio between perpendicular conductivity and parallel conductivity and high stability, they can be used for beam uniformity and beamlet divergence measurement. This paper presents the investigation of the influence on the response of 1D carbon tile having the thermal characteristics and features of some dedicated diagnostics. Simulations show that it will be possible to verify experimentally whether the beam meets the requirement about the maximum allowed value. This work lays a foundation for design and application of high precision beam diagnostic targets.
DOI: 10.57760/sciencedb.04114
title: Conceptual design of the supercritical CO2 cooled lithium lead blanket for CFETR
title: Conceptual design of the supercritical CO2 cooled lithium lead blanket for CFETR

description: A conceptual design of the supercritical CO2 cOoled Lithium-Lead (COOL) blanket has been proposed as one advanced blanket candidate for the Chinese Fusion Engineering Testing Reactor (CFETR). At present, the COOL blanket is designed to fulfill the requirement of operating under the fusion power of 1.5 GW of CFETR while realizing the tritium self-sufficiency. Structural designs are carried out for outboard and inboard blanket segments and analyses with regard to neutronics and thermo-hydraulics are conducted to evaluate the blanket performance. Results indicate that a comparatively high Tritium Breeding Ratio (TBR) of 1.183 and a PbLi outlet temperature of 600 – 700◦C can be achieved for this blanket concept. Besides, a Power Conversion System (PCS) based on the supercritical CO2 recompressing cycle is preliminarily designed for the blanket and the gross thermal efficiency is estimated to be 39% – 46% when assuming the turbine inlet temperature ranges between 550◦C and 650◦C.
description: A conceptual design of the supercritical CO2 cOoled Lithium-Lead (COOL) blanket has been proposed as one advanced blanket candidate for the Chinese Fusion Engineering Testing Reactor (CFETR). At present, the COOL blanket is designed to fulfill the requirement of operating under the fusion power of 1.5 GW of CFETR while realizing the tritium self-sufficiency. Structural designs are carried out for outboard and inboard blanket segments and analyses with regard to neutronics and thermo-hydraulics are conducted to evaluate the blanket performance. Results indicate that a comparatively high Tritium Breeding Ratio (TBR) of 1.183 and a PbLi outlet temperature of 600 – 700◦C can be achieved for this blanket concept. Besides, a Power Conversion System (PCS) based on the supercritical CO2 recompressing cycle is preliminarily designed for the blanket and the gross thermal efficiency is estimated to be 39% – 46% when assuming the turbine inlet temperature ranges between 550◦C and 650◦C.