cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57760/sciencedb.04189
title: Simultaneous Measurement of Phenols Using Three-way Fluorescence Spectroscopy: a Comparison of N-PLS, U-PLS and PARAFAC Modeling
title: Simultaneous Measurement of Phenols Using Three-way Fluorescence Spectroscopy: a Comparison of N-PLS, U-PLS and PARAFAC Modeling

description:  PARAFAC works well when the differences between the spectra of analytes are large, but may fail in extreme cases where the spectra severely overlap. Phenols with similar chemical structures emit the similar fluorescence spectra. The correlation coefficients of a computed spectrum with the two or more overlapped standard spectra may so close that PARAFAC gives wrong results in recognizing component and further in predicting concentration. So the new exploration should been given for much accurate identification and quantification.In this paper, unfolded partial least squares/residual bilinearization (U-PLS/RBL) and multi-way partial least square/residual-bilinearization (N-PLS/RBL) are studied to deal with fluorescence excitation-emission matrices (EEMs) for the direct determination of 5 phenols in different water samples.
description:  PARAFAC works well when the differences between the spectra of analytes are large, but may fail in extreme cases where the spectra severely overlap. Phenols with similar chemical structures emit the similar fluorescence spectra. The correlation coefficients of a computed spectrum with the two or more overlapped standard spectra may so close that PARAFAC gives wrong results in recognizing component and further in predicting concentration. So the new exploration should been given for much accurate identification and quantification.In this paper, unfolded partial least squares/residual bilinearization (U-PLS/RBL) and multi-way partial least square/residual-bilinearization (N-PLS/RBL) are studied to deal with fluorescence excitation-emission matrices (EEMs) for the direct determination of 5 phenols in different water samples.
DOI: 10.57760/sciencedb.04190
title: Raw data for a meta-analysis concerning the second-line treatment of small cell lung caner
title: Raw data for a meta-analysis concerning the second-line treatment of small cell lung caner

description: It remains unclear what the best second-line treatment is for patients with small-cell lung cancer (SCLC) sensitive to previous platinum-based chemotherapy. We performed a Bayesian network meta-analysis involving 1560 patients from 11 studies to identify the best second-line treatment for SCLC. We extracted raw data in this dataset.
description: It remains unclear what the best second-line treatment is for patients with small-cell lung cancer (SCLC) sensitive to previous platinum-based chemotherapy. We performed a Bayesian network meta-analysis involving 1560 patients from 11 studies to identify the best second-line treatment for SCLC. We extracted raw data in this dataset.
DOI: 10.57760/sciencedb.04192
title: Efficient Production of 3'-Sialyllactose by Single Whole-Cell in One-Pot Biosynthesis
title: Efficient Production of 3'-Sialyllactose by Single Whole-Cell in One-Pot Biosynthesis

description: Sialyllactose (SL) is one of the most important acidic oligosaccharides in human milk,which plays an important role in the health of infants. In this work, an efficient multi-enzymecascade was developed in a single whole cell to produce 3'-SL. We constructed two compatibleplasmids with double cloning sites to co-express four genes. Different combinations were assessed toverify the optimal catalytic ability. Then, the conversion temperature, pH, and stability under theoptimal temperature and pH were investigated. Moreover, the optimal conversion conditions andsurfactant concentration were determined. By using the optimal conditions (35 C, pH 7.0, 20 mMpolyphosphate, 10 mM cytidine monophosphate (CMP), 20 mM MgCl2), 25 mL and 4 L conversionsystems were carried out to produce 3'-SL. Similar results were obtained between different volumeconversion reactions, which led the maximum production of 3'-SL to reach 53 mM from 54.2 mMof sialic acid (SA) in the 25 mL system and 52.8 mM of 3'-SL from 53.8 mM of SA in the 4 L system.These encouraging results demonstrate that the developed single whole-cell multi-enzyme systemexhibits great potential and economic competitiveness for the manufacture of 3'-SL.
description: Sialyllactose (SL) is one of the most important acidic oligosaccharides in human milk,which plays an important role in the health of infants. In this work, an efficient multi-enzymecascade was developed in a single whole cell to produce 3'-SL. We constructed two compatibleplasmids with double cloning sites to co-express four genes. Different combinations were assessed toverify the optimal catalytic ability. Then, the conversion temperature, pH, and stability under theoptimal temperature and pH were investigated. Moreover, the optimal conversion conditions andsurfactant concentration were determined. By using the optimal conditions (35 C, pH 7.0, 20 mMpolyphosphate, 10 mM cytidine monophosphate (CMP), 20 mM MgCl2), 25 mL and 4 L conversionsystems were carried out to produce 3'-SL. Similar results were obtained between different volumeconversion reactions, which led the maximum production of 3'-SL to reach 53 mM from 54.2 mMof sialic acid (SA) in the 25 mL system and 52.8 mM of 3'-SL from 53.8 mM of SA in the 4 L system.These encouraging results demonstrate that the developed single whole-cell multi-enzyme systemexhibits great potential and economic competitiveness for the manufacture of 3'-SL.
DOI: 10.57760/sciencedb.04194
title: An improved on-the-fly global variance reduction technique by automatically updating weight window values for Monte Carlo shielding calculation
title: An improved on-the-fly global variance reduction technique by automatically updating weight window values for Monte Carlo shielding calculation

description: This paper presents an improved on-the-fly global variance reduction (GVR) method for Monte Carlo radiation shielding calculations. This method generates the weight window (WW) mesh internally in the Monte Carlo (MC) code, and updates automatically the WW value on-the-fly as the particle flux of a mesh element has a certain level of statistical error. This method has many advantages, such as, it does not depend on third party codes; it only needs one MC run to obtained the WW mesh together with the global flux map; and it has no limitation on the source definition and particle types. In addition, a method to deal with long history problem, which is caused by excessive splitting of tracks, is proposed in this paper. The on-the-fly GVR method has been implemented in the MCNP code and verified using a simple 2D model and the ITER benchmark model. The results show significant acceleration effects on the MC shielding calculation against analog simulations.
description: This paper presents an improved on-the-fly global variance reduction (GVR) method for Monte Carlo radiation shielding calculations. This method generates the weight window (WW) mesh internally in the Monte Carlo (MC) code, and updates automatically the WW value on-the-fly as the particle flux of a mesh element has a certain level of statistical error. This method has many advantages, such as, it does not depend on third party codes; it only needs one MC run to obtained the WW mesh together with the global flux map; and it has no limitation on the source definition and particle types. In addition, a method to deal with long history problem, which is caused by excessive splitting of tracks, is proposed in this paper. The on-the-fly GVR method has been implemented in the MCNP code and verified using a simple 2D model and the ITER benchmark model. The results show significant acceleration effects on the MC shielding calculation against analog simulations.
DOI: 10.57760/sciencedb.04196
title: Generation of few-group constants by Monte Carlo code cosRMC
title: Generation of few-group constants by Monte Carlo code cosRMC

description: Driven by the huge advantage of Monte Carlo method, the application of assembly homogenization by continuous-energy Monte Carlo method draws more and more attention. This paper presents the theory and the verification results of few-group constants generation for a conventional two-step procedure by Monte Carlo code cosRMC. Currently in cosRMC, 69 WIMS fine group constants are tallied and then B1/P1 equations are solved to compute few-group constants with leakage correction. And diffusion coefficient can be obtained by the B1/P1 leakage term. In addition, diffusion coefficient calculation based on classic out-scatter approximation and in-scatter approximation using the B1/P1 current spectrum are included in cosRMC as well. For verification, the simulation results performed by the nodal diffusion code SIMULATE5 using group constants generated by cosRMC have been compared to cosRMC Monte Carlo solution. The kinf/keff/power distribution (radial & axial) obtained by two schemes cosRMC-SIMULATE5 and cosRMC shows good agreement with each other regarding to single assembly/full core level benchmark. These positive outcomes indicate that the few-group constants generated by cosRMC are highly accurate.
description: Driven by the huge advantage of Monte Carlo method, the application of assembly homogenization by continuous-energy Monte Carlo method draws more and more attention. This paper presents the theory and the verification results of few-group constants generation for a conventional two-step procedure by Monte Carlo code cosRMC. Currently in cosRMC, 69 WIMS fine group constants are tallied and then B1/P1 equations are solved to compute few-group constants with leakage correction. And diffusion coefficient can be obtained by the B1/P1 leakage term. In addition, diffusion coefficient calculation based on classic out-scatter approximation and in-scatter approximation using the B1/P1 current spectrum are included in cosRMC as well. For verification, the simulation results performed by the nodal diffusion code SIMULATE5 using group constants generated by cosRMC have been compared to cosRMC Monte Carlo solution. The kinf/keff/power distribution (radial & axial) obtained by two schemes cosRMC-SIMULATE5 and cosRMC shows good agreement with each other regarding to single assembly/full core level benchmark. These positive outcomes indicate that the few-group constants generated by cosRMC are highly accurate.
DOI: 10.57760/sciencedb.04199
title: Preliminary insulation design for transmission line of CFETR NNBI test platform
title: Preliminary insulation design for transmission line of CFETR NNBI test platform

description: In order to meet the requirements of China Fusion Engineering Test Reactor (CFETR) for neutral beam injector system, a Negative-ion Based Neutral Beam Injector system(NNBI) test platform will be established by Institute of Plasma Physics Chinese Academy of Sciences (ASIPP). The high voltage Transmission Line (TL) plays an important role in the NNBI system, connecting the ion source and the power supply system. The TL will be insulated by gas insulation technology, that is, Gas Insulated Transmission Line (GITL). This paper mainly focuses on the insulation dimension design of TL2, which is the longest and main section of the TL. Firstly, the method of determining the design criteria of TL2 gas insulation is given, the gap required by gas insulation is analyzed and the condition of electric field strength to prevent the movement of conductive particles is put forward; secondly, the basic design principles of TL2 insulation design are put forward and the design method of wall thickness of TL2 central conductor and grounding shell is given. Finally, according to the above insulation requirements and design methods, some basic structural parameters of TL2 of the NNBI test platform are determined, including the outer radius and wall thickness of the central conductor and the inner radius and wall thickness of the grounding shell, which lays a foundation for the subsequent detailed design of TL.
description: In order to meet the requirements of China Fusion Engineering Test Reactor (CFETR) for neutral beam injector system, a Negative-ion Based Neutral Beam Injector system(NNBI) test platform will be established by Institute of Plasma Physics Chinese Academy of Sciences (ASIPP). The high voltage Transmission Line (TL) plays an important role in the NNBI system, connecting the ion source and the power supply system. The TL will be insulated by gas insulation technology, that is, Gas Insulated Transmission Line (GITL). This paper mainly focuses on the insulation dimension design of TL2, which is the longest and main section of the TL. Firstly, the method of determining the design criteria of TL2 gas insulation is given, the gap required by gas insulation is analyzed and the condition of electric field strength to prevent the movement of conductive particles is put forward; secondly, the basic design principles of TL2 insulation design are put forward and the design method of wall thickness of TL2 central conductor and grounding shell is given. Finally, according to the above insulation requirements and design methods, some basic structural parameters of TL2 of the NNBI test platform are determined, including the outer radius and wall thickness of the central conductor and the inner radius and wall thickness of the grounding shell, which lays a foundation for the subsequent detailed design of TL.
DOI: 10.57760/sciencedb.04200
title: Solar radio observing and simulation of shadowing effect
title: 遮挡效应的太阳射电观测和仿真

description: Shadowing effects is one of the main consideration factors in designing complex system with multiple antennas. There will be 373 sets of antennas in Mingantu Station, after completing the construction of the program Meridian II equipment of National Major Science and Technology Infrastructure. Limited by test site, model complexity and computation, shadowing effect is usually hard to measure and to predict especially for electrically large-size structures. The observed solar radio data on S/C/X bands between 2017 and 2020 by MST (Mingantu Solar Radio Telescope), present the shadowing effect with the 20m antenna and remote hills as obstacles. The observed data with shadowing effect can be divided into antenna area, atmosphere area and hills area with different shadowing characteristics. Based on the prediction method of single knife-edge diffraction loss recommended by ITU-R P.526-15, a model of 20m antenna reflector is built, the shadowing effects on S/C/X-bands are simulated, and the results show agreement with those of observation. From simulation and observing results, shadowing effects are related with wavelength, obstacle character, distance and angle among obstacle, source and receiving antenna, the receiving antenna’s beam, and dynamic range of receiving system, etc.
description: Shadowing effects is one of the main consideration factors in designing complex system with multiple antennas. There will be 373 sets of antennas in Mingantu Station, after completing the construction of the program Meridian II equipment of National Major Science and Technology Infrastructure. Limited by test site, model complexity and computation, shadowing effect is usually hard to measure and to predict especially for electrically large-size structures. The observed solar radio data on S/C/X bands between 2017 and 2020 by MST (Mingantu Solar Radio Telescope), present the shadowing effect with the 20m antenna and remote hills as obstacles. The observed data with shadowing effect can be divided into antenna area, atmosphere area and hills area with different shadowing characteristics. Based on the prediction method of single knife-edge diffraction loss recommended by ITU-R P.526-15, a model of 20m antenna reflector is built, the shadowing effects on S/C/X-bands are simulated, and the results show agreement with those of observation. From simulation and observing results, shadowing effects are related with wavelength, obstacle character, distance and angle among obstacle, source and receiving antenna, the receiving antenna’s beam, and dynamic range of receiving system, etc.
DOI: 10.57760/sciencedb.04202
title: Thermal dynamic analyses of the primary heat transfer system for the WCCB blanket of CFETR
title: Thermal dynamic analyses of the primary heat transfer system for the WCCB blanket of CFETR

description: The Water Cooled Ceramic Breeder (WCCB) blanket is one of the blanket candidates of Chinese Fusion Engineering Testing Reactor (CFETR). The Primary Heat Transfer System (PHTS) of the WCCB blanket has been updated to fulfill the requirement of operating under 200 MW~1.5 GW of fusion power based on the lasted CFETR design. The PHTS has two independent Cooling Systems (CSs). CS1 provides coolant for the First Wall (FW) and CS2 for Breeding Zones (BZs). In this paper, the PHTS design is optimized to obtain more uniform flow distribution among blanket sectors. Based on the optimized PHTS, plasma pulse operation and the Multifaceted Asymmetric Radiation From the Edge (MARFE) transient are simulated using RELAP5 to study the thermal dynamic behavior of the WCCB PHTS. The results show that CS1 and CS2 have different thermal dynamic behavior during plasma pulses due to different thermal inertia. Different schemes are considered for CS1 and CS2 to couple with the Power Conversion System (PCS). As for the MARFE, thermal hydraulic parameters of CS1 can return to steady state soon after the transient. The WCCB PHTS design is preliminarily evaluated as reliable according to thermal dynamic analyses.
description: The Water Cooled Ceramic Breeder (WCCB) blanket is one of the blanket candidates of Chinese Fusion Engineering Testing Reactor (CFETR). The Primary Heat Transfer System (PHTS) of the WCCB blanket has been updated to fulfill the requirement of operating under 200 MW~1.5 GW of fusion power based on the lasted CFETR design. The PHTS has two independent Cooling Systems (CSs). CS1 provides coolant for the First Wall (FW) and CS2 for Breeding Zones (BZs). In this paper, the PHTS design is optimized to obtain more uniform flow distribution among blanket sectors. Based on the optimized PHTS, plasma pulse operation and the Multifaceted Asymmetric Radiation From the Edge (MARFE) transient are simulated using RELAP5 to study the thermal dynamic behavior of the WCCB PHTS. The results show that CS1 and CS2 have different thermal dynamic behavior during plasma pulses due to different thermal inertia. Different schemes are considered for CS1 and CS2 to couple with the Power Conversion System (PCS). As for the MARFE, thermal hydraulic parameters of CS1 can return to steady state soon after the transient. The WCCB PHTS design is preliminarily evaluated as reliable according to thermal dynamic analyses.
DOI: 10.57760/sciencedb.04204
title: Effects of Psychological Distance on Nuclear Risk Perceptions
title: 心理距离对核电风险认知的影响研究

description: Recently, the Not- In-My-Backyard (NIMBY) events about the construction of nuclear facilities happened in China, which impeded the development of nuclear energy. The distance is undoubtedly an important factor affecting public nuclear power risk perceptions. In previous research, the empirical studies on how distance influenced risk perceptions had come to different conclusions. Further exploration of its causes is of great significance to energy policy. Based on the psychological distance theory, this paper divided distance into the four dimensions: spatial distance, social distance, temporal distance and hypotheticality to explore the effects of psychological distance on risk perceptions. An empirical study was conducted and a total of 1001 samples including site- specific samples (N=184) and national samples (N=817) were collected for the survey. The results showed that the site-specific samples’risk perceptions were significantly lower than the national samples’risk perceptions, temporal distance, social distance and hypotheticality had a significant and negative impact on risk perceptions.
description: Recently, the Not- In-My-Backyard (NIMBY) events about the construction of nuclear facilities happened in China, which impeded the development of nuclear energy. The distance is undoubtedly an important factor affecting public nuclear power risk perceptions. In previous research, the empirical studies on how distance influenced risk perceptions had come to different conclusions. Further exploration of its causes is of great significance to energy policy. Based on the psychological distance theory, this paper divided distance into the four dimensions: spatial distance, social distance, temporal distance and hypotheticality to explore the effects of psychological distance on risk perceptions. An empirical study was conducted and a total of 1001 samples including site- specific samples (N=184) and national samples (N=817) were collected for the survey. The results showed that the site-specific samples’risk perceptions were significantly lower than the national samples’risk perceptions, temporal distance, social distance and hypotheticality had a significant and negative impact on risk perceptions.
DOI: 10.57760/sciencedb.04206
title: Loss of flow accident and loss of heat sink accident analyses of the WCCB primary heat transfer system for CFETR
title: Loss of flow accident and loss of heat sink accident analyses of the WCCB primary heat transfer system for CFETR

description: The Primary Heat Transfer System (PHTS) of the Water Cooled Ceramic Breeder (WCCB) blanket was designed to fulfill multiple operation modes of Chinese Fusion Engineering Testing Reactor (CFETR) with the fusion power of 200 MW in Phase I and 1.5 GW in Phase II. One PHTS loop was modeled using RELAP5. Loss of Flow Accident (LOFA) and Loss of Heat Sink (LOHS) were analyzed to evaluate the reliability of the PHTS design. Both accidents were simulated under two phases of CFETR with two postulations. The first postulation was that accidents happened without detection. Results showed that the blanket was overheated. The second postulation was to verify the effectiveness of corresponding counter-measures. For LOFA, if the plasma shuts down in time, the system can establish natural circulation and remove the decay heat effectively. For LOHS, plasma shutdown in time and feed water restoration at appropriate time are effective mitigation measures.
description: The Primary Heat Transfer System (PHTS) of the Water Cooled Ceramic Breeder (WCCB) blanket was designed to fulfill multiple operation modes of Chinese Fusion Engineering Testing Reactor (CFETR) with the fusion power of 200 MW in Phase I and 1.5 GW in Phase II. One PHTS loop was modeled using RELAP5. Loss of Flow Accident (LOFA) and Loss of Heat Sink (LOHS) were analyzed to evaluate the reliability of the PHTS design. Both accidents were simulated under two phases of CFETR with two postulations. The first postulation was that accidents happened without detection. Results showed that the blanket was overheated. The second postulation was to verify the effectiveness of corresponding counter-measures. For LOFA, if the plasma shuts down in time, the system can establish natural circulation and remove the decay heat effectively. For LOHS, plasma shutdown in time and feed water restoration at appropriate time are effective mitigation measures.