bluuebunny/crossref_metadata_2025_split huggingface dataset:
Capability assessment of production of n.c.a. isotope 177Lu on the average flux reactor IRT-T
Authors: Kabanov D V , Zukau V V , Timchenko S N , Ushakov I A 
Published: January 2022

Abstract
The article discusses the possibility of producing 177Lu nuclide at the IRT-T mid-flow research nuclear reactor. The paper presents possible reactions on thermal neutrons with lutetium and ytterbium nuclei, on the basis of which a theoretical calculation of the activity of 177Lu, 177Yb and 175Yb was carried out taking into account the burnup over the entire energy spectrum of the central channel of TsK-1 of the research nuclear reactor IRT-T. The obtained theoretical calculations were verified experimentally by irradiation of enriched ytterbium targets. It is shown that upon irradiation of an enriched ytterbium target with a mass of 10 mg. within 3 weeks, the obtained activity of 177Lu was 23.05 GBq, while the activity of 175Yb was 2.55 GBq. Two Yb2O3 samples with masses of 3.4 and 4.7 mg enriched in 176Yb to 99.59% were irradiated under different conditions. The first sample (4.7 mg) was irradiated at a power of 100 kW for 60 minutes and the activity of 177Lu was 497.42 MBq, and the activity 175Yb was 97.95 MBq. The second sample was irradiated for 20 hours at 6 MW and the activity of 177Lu was 0.805, and the activity 175Yb = 0.155 MBq. Comparison of the calculated data and experimental results showed a convergence of less than 20%. The performed calculations and experiments make it possible to make a preliminary assessment of the activity that can be obtained during the production of the 177Lu isotope at the IRT-T research nuclear reactor, as well as to calculate the necessary radiation protection required for working with radioactive ytterbium and lutetium.
Shader Technology based on Physical Rendering
Authors: Zhou DW , Gu XX , Wang Y , Li QM 
Published: January 2022

Abstract
In the development of space mission simulation system, the fidelity of real-time scene rendering is one of the key indexes of simulation system. This paper presents a new shader technology based on physical rendering. The technique was validated by rendering tests in the engine. The simulation results show that the method can effectively improve the fidelity of scene rendering and provide technical support for the development of high-fidelity space mission simulation system.
Forecast Model of Transmission Line Sag Based on GA
Authors: Zhang F , Fan MZ , Yu XC , Dong X , Wang WY 
Published: January 2022

Abstract
Transmission lines are an important part of the power system and the main artery for the transmission of electrical energy. The safe operation of overhead lines is critical to the safe and stable operation of the entire power grid. This paper takes the main body of the transmission conductor as the main research object. According to the line load calculation theory, risk assessment theory and fuzzy prediction theory, first establish a transmission line risk assessment model that takes into account the influence of temperature changes under weather forecast, and then uses the GA optimized TS-FNN The prediction of the sag of the transmission line has verified the feasibility and accuracy of the proposed theory and method through simulation analysis.
Power grid electricity prediction model in multi-dimensional scenarios
Authors: Mei D , Guo SM , Li YR 
Published: January 2022

Abstract
The prediction of power grid electricity is the key to ensure the reliable and economic operation of power system. In order to improve the accuracy of power grid electricity forecast, a new power grid electricity forecast model in multi-dimensional scenarios is proposed in this paper. The simulation results show that this method has higher prediction accuracy, and it provides a new idea for the research of power grid electricity prediction
Elastohydrodynamic lubrication analysis of spur gear under mixed friction condition
Authors: Wu MG , Hu XZ 
Published: January 2022

Abstract
In order to improve the transmission performance and the working life of spur gears, the real lubrication state of spur gears under EHL is studied in this paper. Firstly, a two-dimensional roughness model of the meshing point is established; Then the EHL results of five characteristic points in the meshing process are analyzed. Finally, the correctness of the numerical method is verified by comparing the numerical results with the values of the Dowson-Higginson film thickness formula.
Seismic Vulnerability Analysis of Double-column High-pier Rigid Frame Bridge with Tie-beams Subjected to Near-fault Earthquake Inputs
Authors: Li Y , Zhang HY , An LM 
Published: January 2022

Abstract
Due to short duration and high energy characteristics, near-fault earthquakes showed more destructive damage on bridges. For double-column hige-pier rigid frame bridges, tie-beams between double-columns play an important role in seismic resistance. Therefore, the influence of traditional reinforced concrete tie-beams and energy dissipation braces on the seismic performance of high-pier rigid frame bridges under near-fault earthquakes were analyzed base on the seismic vulnerability analysis. It was showed that as the number of tie beams increases, the plastic hinge curvature on the top and bottom of the pier gradually decreases, and the probability of exceeding each damage state also gradually decrease. Additionally the energy dissipation braces can greatly reduce the seismic response and the damage probability of the bridge structure.
Study on axial compression ratio limits of large size S-CLIP reinforced columns
Authors: Wang HC , Wang H , Jiang PX , Wang LX 
Published: January 2022

Abstract
Based on the constraint mechanism of concrete, an improved method of S-Clip reinforcement was proposed. Experimental study and numerical simulation were carried out on the large size normal reinforcement column and S-Clip reinforcement column, and the numerical calculation analysis was carried out on the improved S-Clip reinforcement column. On the premise of ensuring the bending failure form, the reasonable axial compression ratio limit of S-Clip reinforcement column was studied to provide a reference for the application of S-Clip reinforcement method. The results showed that the deformation capacity of both s-Clip reinforced column and the improved S-Clip reinforced column decreased with the increase of the axial compression ratio limit. The numerical simulation results were close to the test results, and the stiffness reduction rules and other rules had good approximation, and the failure modes were consistent. For the improved S-CLIP reinforcement column, the test axial compression ratio should not exceed 0.3. The influence of size effect was not considered in this study.
Field test and numerical analysis of a new expansion joint
Authors: Dou WY 
Published: January 2022

Abstract
in order to realize the reasonable design of new type pile slab subgrade, this study, relying on the reconstruction and expansion project of Lintou Longxi Interchange Section of g5011 Wuhe expressway, constructs a pile slab subgrade model with 15 holes and each hole is 6m. Through the full-scale model, the displacement of the new type of vertical limited expansion joint of pile slab subgrade under the most unfavorable load is obtained. Based on the separated modeling method, the nonlinear analysis of full-scale specimen under test loading condition with load displacement curve in good agreement with the measured results is realized. Combined with the static performance test of full-scale members, it is verified that the expansion joint of the pile slab subgrade has good vertical displacement limiting ability, which can be applied to the engineering.
Research on Bending Performance of RC Beams Reinforced by Prestressed TRM
Authors: Ren W , Zhang H , Liu H 
Published: January 2022

AbstractTo solve the problems of Low material strength utilization rate and unsatisfactory reinforcement effect in the concrete structure reinforced by bonding method, the self-developed tensioning and anchoring equipment was used to carry out the experimental study of prestressed TRM reinforcement for RC beams. The influence of prestressing TRM on bearing capacity, fracture characteristics and ductility were studied through 3 RC beam tests. It was concluded that the crack load, yield load and ultimate load can be significantly increased by prestressing TRM reinforcement, and the yield load can be increased by more than 30%. The prestressed TRM reinforcement beam had a good constraint effect on the cracks of the beam; After TRM reinforcement, the ductility of beams decreased to a certain extent. In this paper, the final failure of the test beam was caused by the tensile failure of the fiber textile, and the yield load of the beam increases obviously, which indicates that the prestressing force on the fiber textile can effectively improve the strength utilization ratio of the material.
Study on reasonable restraint system of double-deck frame bridge subjected to seismic action
Authors: Zong XM , Liu Y , Yang F , Wu J , Wang XD , Zhou M 
Published: January 2022

Abstract
In this paper, in order to improve the seismic performance of frame type double deck overpass bridge under seismic action, the most reasonable restraint system of frame double-deck overpass is studied. Based on the typical frame-type double-deck continuous overpass-hushen bridge, the finite element analysis model of the solid bridge is established. Then, from six different directions, eight different constraint combinations are established. Finally, through the analysis of the bridge direction control point of the internal force, displacement and other parameters, research and contrast the frame double-deck overpass under different constraints of the seismic response. The results show that the combination of rubber bearing, steel wire rope and concrete block can effectively limit the relative displacement between piers and beams, and reduce the internal force response of Piers and residual deformation of supports.
Corrosion Evolution of AZ31 Mg Alloy with a Nano Crystallized Film
Authors: Zhao Jiacheng , An Haojin , Liu Yong , Zhang Qinghao , Luo Lan , Wan Jun 
Published: January 2022

Abstract
A comprehensive investigation of nano crystallized GaN film synthesized on AZ31 magnesium alloy substrate using atomic layer deposition (ALD) is presented in this paper. The microstructure and mechanical analysis indicate the nano crystallized film is homogeneous, well-adhesive to Mg alloy substrate. The corrosion experimental results demonstrate that the nanometer crystallized film turns Mg alloy corrosion process from longitudinal/non-uniform to horizontal/uniform corrosion, which is deduced from the facts that a great but less fluctuation surface potential mapping, a smaller ∆Erev, corr
and a more uniformed corroded morphology. A higher Ecorr
, a smaller icorr
and a higher Z also mean the film can yield a prominent amelioration in the Mg alloy corrosion resistance. The work proposes that a uniform coverage even in a nano-magnitude and crystallized form could make corrosion more uniform and later.
Study on Explosion Resistance of Reinforced Concrete Slab Wrapped with Glass Fibre Reinforced Polymer (GFRP)
Authors: Ye Hailin , Jiang Chuwei , Qi Wenhao , Feng Zu 
Published: January 2022

Abstract
A new type of reinforced concrete slab wrapped with glass fibre reinforced polymer (GFRP) is proposed, which is composed of GFRP profile slab wrapped with reinforced concrete slab. In order to master the anti-explosion performance of the new composite slab structure under the action of explosion, the dynamic response results of the new wrapped glass fibre reinforced concrete slab structure and the ordinary concrete slab structure under the action of explosion are analyzed and compared by using ANSYS/LS DYNA and fluid structure coupling algorithm. The results show that the new wrapped glass fibre reinforced concrete slab structure, which through the sand bonding treatment of GFRP ribbed slab and inner surface, GFRP slab is closely combined with concrete, giving full play to the superposition effect of GFRP and concrete on explosion impact resistance, which has better explosion impact resistance than ordinary reinforced concrete slab structure, and provides important support for the application of GFRP reinforced concrete composite structure.
In-situ Preparation of CdS/TiO2 Heterojunction Based on MOFs-Derived TiO2 with Improved Photocatalytic Performance
Authors: Chen Yue , Li Ping , Duo Shuwang 
Published: January 2022

Abstract
Aiming at improving the photocatalytic properties of TiO2, CdS/TiO2 binary heterojunctions with different molar ratios of CdS (0.4%, 0.5%, 0.6%) were prepared by facile fabrication of CdS on metal-organic frameworks (MOFs)-derived TiO2. The composition and morphology of the as-synthesized specimens were well confirmed via XRD and SEM. The photocatalytic experiments showed that the photodegradation efficiency of binary heteroconjunctions for RhB aqueous solution was higher than that of bare CdS and TiO2 under visible light irradiation. Among of all the binary heterojunctions, the CdS/TiO2-0.5:1 possessed the optimal photocatalytic property (91.4%) within 70 min, which was almost 90 and 2 times as high as these of pristine TiO2 and CdS, separately. Therefore, the rational design and construction of CdS/TiO2 heterojunction could be adopted as a potential method to improve the visible-light photodegradation efficiency of TiO2.
Characterisations of the HinOTORI telescope with a three-color imager at Ali Observatory in Western Tibet
Authors: Liu W. , Utsumi Y. , Yao Y.Q. , Kawabata K.S. , Sasada M. , Yoshida M. , Yin J. , Lou Z. 
Published: January 2022

Abstract
HinOTORI is a new telescope supported by an international
collaboration project between China and Japan. It is a 50 centimeter
telescope equipped with simultaneous three-color imagers (u',
R
C, and I
C bands). It is located at Ali
Observatory at an altitude of 5100m. Thanks to the high altitude and
extreme dryness, Ali site is one of the most suitable sites for
optical astrometry. HinOTORI telescope aims at detecting optical
transients such as the counterparts of gravitational wave (GW)
sources, supernovae, gamma-ray bursts (GRB) and so on. This paper
describes the site information, design of simultaneous three-color
optical layout, system instruments and whole control system. We also
report some telescope characterisations for three bands
(u'/R
C/I
C) respectively, such as Hartmann constant
(0.49”/0.56”/0.60”), best focus position (3.922/3.920/3.903 mm),
PSF FWHM size (3.755/3.328/3.167pixels), total transmittance and
limiting magnitude (15.69/17.57/17.05mag, 10 σ 30 seconds
exposure time). With different airmass observation data, the
atmospheric extinction coefficients of three bands
(0.366/0.061/0.026) were also derived.
Large-scale recognition of natural landmarks with deep learning based on biomimetic sonar echoes
Authors: Zhang Liujun , Mueller Rolf 
Published: January 2022

Abstract
The ability to identify natural landmarks on a regional scale could contribute to the navigation skills of echolocating bats and also advance the quest for autonomy in natural environments with man-made systems. However, recognizing natural landmarks based on biosonar echoes has to deal with the unpredictable nature of echoes that are typically superpositions of contributions from many different reﬂectors with unknown properties. The results presented here show that a deep neural network (ResNet50) was able to classify 10 different ﬁeld sites and 20 different tracks (2 at each site) distributed over an area about 40 kilometers in diameter. Based on spectrogram representations of single echoes, classiﬁcation accuracies up to 99.6% for different sites and 94.7% for different tracks have been achieved. Classiﬁcation performance was found to depend on the used pulse component (constant-frequency - CF vs. frequency-modulated - FM) and the trade-off between time and frequency resolution in the spectrogram representations of the echoes. For the former, classiﬁcation performance increased monotonically with better time resolution. For the latter, classiﬁcation performance peaked at an intermediate trade-off point between time and frequency resolution indicating that both dimensions contained relevant information. Future work will be needed to further characterize the quality of the spatial information contained in the echoes, e.g., in terms of spatial resolution and potential ambiguities.
Probabilistic impacts of compound dry and hot events on global gross primary production
Authors: Wu Xinying , Jiang Dabang 
Published: January 2022

Abstract
As the basis of food and fiber production, gross primary production (GPP) plays a critical role in the growth of vegetation. Understanding the response of GPP to climate extremes is important for ensuring food security under ongoing global warming. Plenty of evidence shows that the recent widespread dry or hot events across the globe have significant influences on GPP, yet little is known about their joint impacts. Here, we reveal a high risk of compound dry and hot events globally, in response to the strong negative dependence of precipitation and temperature, which leads to a substantial negative impact on GPP for both crop and pasture ecosystems. Using a meta-Gaussian model, we show that the probability of a reduction in global terrestrial GPP increases significantly under compound dry and hot conditions relative to their individual counterparts. Further, the risk of GPP reductions increases with the intensified severity of compound dry and hot events across the globe. These results unravel the sensitivity of GPP to compound dry and hot conditions and highlight the need to account for the influence of compound events when assessing the carbon budget.
Case–control study related to the use of L-cysteine in the differential diagnosis of oral halitosis
Authors: Simpione Guilherme , Reia Verônica Caroline Brito , Santaella Natália Garcia , Maluf Gustavo , Santos Paulo Sérgio Da Silva 
Published: January 2022

Abstract
Oral halitosis is characterized by a foul, unpleasant breath that emanates from the oral cavity due to local or systemic conditions. Approximately 90% of offensive odors are caused by volatile sulfur compounds (VSCs). L-cysteine, used as a test solution to control bad breath, induces the formation of VSCs and serves as a preliminary rinse. The study aim was to investigate the effectiveness of L-cysteine solution in differentiating the origin of oral halitosis using a gas chromatography apparatus. Methods: In total, 37 patients with an average age of 49.56 years were evaluated and divided into two groups: halimetry before the use of L-cysteine (n = 37) and halimetry after the use of L-cysteine (n = 37). Patients over 18 years of age, without severe systemic health impairment or infectious/contagious diseases, and who did not use medicines that influenced their breath were included. Halimetry was performed using the OralCroma™ device. In the halimetry before the use of L-cysteine group, 5.40%, 5.40%, and 64.86% of the patients had high levels of sulfide, methyl mercaptan, and dimethyl sulfide, respectively. After the use of L-cysteine, 48.64%, 8.10%, and 37.84% of the patients had high levels of sulfide, methyl mercaptan, and dimethyl sulfide. In this study, L-cysteine proved to be important for the assessment of oral halitosis and effective in differentiating the origin of oral halitosis; therefore, this compound could be used for the differential diagnosis of oral halitosis origin using the OralChroma™ device.
A highly sensitive non-enzymatic glucose electrochemical sensor based on NiO nanohives
Authors: Vu Thi Oanh , Chu Thi Xuan , Nguyen Duc Hoa 
Published: January 2022

Abstract
Diabetes is a dangerous chronic disease leading to death. Regular glucose level monitoring in the blood is very important to reduce the risk of diabetes. A lot of methods have been developed to measure the glucose concentration. The non-enzymatic glucose sensor is one of the efficient methods, which has attracted much attention from researchers. In this work, a facile process for the synthesis of NiO nanohives on the surface of nickel foam substrate was reported to apply for the non-enzymatic glucose electrochemical sensing. Morphologies and components of the obtained materials were characterised by field emission scanning electron microscopy (FE-SEM) and energy-dispersive x-ray spectroscopy. FE-SEM images show homogeneous NiO nanohives covering the surface of nickel foam with each cavity diameter of 300–500 nm. Cyclic voltammetry and amperometry were conducted to measure the electrochemical properties of the synthesised NiO/Ni electrodes. The results show that the sensor is highly sensitive (10.08 mA mM−1 cm−2) with a low detection limit (7.25 μA), which is evaluated highly potential to apply for the non-enzymatic glucose electrochemical sensor.
Residual stress and distortion in thick-plate weld joint of AF1410 steel: finite element simulations and experimental studies
Authors: Zhang Kaiyuan , Dong Wenchao , Lu Shanping 
Published: January 2022

Abstract
The quantification of the residual stress and distortion in the thick-plate weld joint of AF1410 steel has great significance, which is the basis for the safety and process design of the component. Therefore, this paper systematically investigated the welding residual stress and distortion distribution in the 10 mm thick welded plate for AF1410 steel by tungsten inert gas welding. The residual stress measurements were carried out by the X-ray diffraction method and advanced contour method, and the distortion was determined by coordinate measuring machine. The developed thermo-metallurgical-mechanical finite element model was applied to predict the residual stress and distortion in multi-pass welding considering solid-state phase transformation (SSPT) and transformation plasticity. The measured residual stress and distortion distribution were in good agreement with the finite element simulation results. The comparison results revealed that the residual stresses in the upper and lower parts of the welding plate were small, and there was apparent stress concentration in the center of the welding joint. SSPT and the subsequent thermal cycle had a significant influence on the magnitude of final residual stress. The accurate finite element model and the understanding of stress formation mechanism are helpful to control the residual stress and distortion distribution of aviation parts reasonably.