276 results on '"Changjiang Wang"'
Search Results
2. Development and characterization of a novel nanobody with SRMV neutralizing activity
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Miao Sun, Changjiang Wang, Huaye Luo, Yanfei Chen, Guanggang Qu, Jian Chen, Ling Li, Min Zhang, and Qinghong Xue
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Small ruminant morbillivirus (SRMV) ,Nanobody ,Fusion protein ,Hemagglutinin protein ,Microbiology ,QR1-502 - Abstract
Abstract Peste des petits ruminants (PPR) is an acute, contact infectious disease caused by the small ruminant morbillivirus (SRMV), and its morbidity in goats and sheep can be up to 100% with significant mortality. Nanobody generated from camelid animals such as alpaca has attracted wide attention because of its unique advantages compared with conventional antibodies. The main objective of this study was to produce specific nanobodies against SRMV and identify its characteristics. To obtain the coding gene of SRMV-specific nanobodies, we first constructed an immune phage-displayed library from the VHH repertoire of alpaca that was immunized with SRMV-F and -H proteins. By using phage display technology, the target antigen-specific VHHs can be obtained after four consecutive rounds of biopanning. Results showed that the size of this VHH library was 2.26 × 1010 CFU/mL and the SRMV-F and -H specific phage particles were greatly enriched after four rounds of biopanning. The positive phage clones were selected and sequenced, and total of five independent different sequences of SRMV-specific nanobodies were identified. Subsequently, the DNA fragments of the five nanobodies were cloned into E. coli BL21(DE3), respectively, and three of them were successfully expressed and purified. Specificity and affinity towards inactivated SRMV of these purified nanobodies were then evaluated using the ELISA method. Results demonstrated that NbSRMV-1-1, NbSRMV-2-10, and NbSRMV-1-21 showed no cross-reactivity with other antigens, such as inactivated BTV, inactivated FMDV, His-tag labeled protein, and BSA. The ELISA titer of these three nanobodies against inactivated SRMV was up to 1:1000. However, only NbSRMV-1-21 displayed SRMV neutralizing activity at a maximum dilution of 1:4. The results indicate that the nanobodies against SRMV generated in this study could be useful in future applications. This study provided a novel antibody tool and laid a foundation for the treatment and detection of SRMV.
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- 2024
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3. Effects of soluble Klotho and Wnt/β-catenin signaling pathway in vascular calcification in chronic kidney disease model rats and the intervention of Shenyuan granules
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Xinrong Zou, Changjiang Wang, Lan Wang, Shenghua Huang, Danfang Deng, Lamei Lin, and Xiaoqin Wang
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Chronic kidney disease (CKD) ,vascular calcification ,sKlotho ,Wnt/β-catenin ,Shenyuan granules ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Objective This study aimed to investigate the effect of the soluble Klotho (sKlotho)/Wnt/β-catenin signaling pathway on vascular calcification in rat models of chronic kidney disease (CKD) and the intervention effect of Shenyuan granules.Methods Rats with 5/6 nephrectomy and high phosphorus feeding were used to establish the vascular calcification model. The rats were given gradient doses of Shenyuan granules aqueous solution and calcitriol solution by gavage for 8 weeks, which were divided into experimental group and positive control group.Results The 5/6 nephrectomy combined with high phosphorus feeding induced thoracic aortic calcification in rats. Shenyuan granules intervention increased the serum sKlotho level, inhibited the mRNA and protein expression of Wnt1, β-catenin, and Runx2 in the thoracic aorta, and alleviated thoracic aortic media calcification in rats.Conclusion Shenyuan granules may partially regulate the Wnt/β-catenin signaling pathway via serum sKl to interfere with the expression of Runx2, thereby improving vascular calcification in CKD.
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- 2024
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4. Selenium-based metabolic oligosaccharide engineering strategy for quantitative glycan detection
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Xiao Tian, Lingna Zheng, Changjiang Wang, Yida Han, Yujie Li, Tongxiao Cui, Jialin Liu, Chuanming Liu, Guogeng Jia, Lujie Yang, Yi Hsu, Chen Zeng, Lijun Ding, Chu Wang, Bo Cheng, Meng Wang, and Ran Xie
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Science - Abstract
Abstract Metabolic oligosaccharide engineering (MOE) is a classical chemical approach to perturb, profile and perceive glycans in physiological systems, but probes upon bioorthogonal reaction require accessibility and the background signal readout makes it challenging to achieve glycan quantification. Here we develop SeMOE, a selenium-based metabolic oligosaccharide engineering strategy that concisely combines elemental analysis and MOE,enabling the mass spectrometric imaging of glycome. We also demonstrate that the new-to-nature SeMOE probes allow for detection, quantitative measurement and visualization of glycans in diverse biological contexts. We also show that chemical reporters on conventional MOE can be integrated into a bifunctional SeMOE probe to provide multimodality signal readouts. SeMOE thus provides a convenient and simplified method to explore the glyco-world.
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- 2023
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5. Site-selected in situ polymerization for living cell surface engineering
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Yihong Zhong, Lijia Xu, Chen Yang, Le Xu, Guyu Wang, Yuna Guo, Songtao Cheng, Xiao Tian, Changjiang Wang, Ran Xie, Xiaojian Wang, Lin Ding, and Huangxian Ju
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Science - Abstract
Abstract The construction of polymer-based mimicry on cell surface to manipulate cell behaviors and functions offers promising prospects in the field of biotechnology and cell therapy. However, precise control of polymer grafting sites is essential to successful implementation of biomimicry and functional modulation, which has been overlooked by most current research. Herein, we report a biological site-selected, in situ controlled radical polymerization platform for living cell surface engineering. The method utilizes metabolic labeling techniques to confine the growth sites of polymers and designs a Fenton-RAFT polymerization technique with cytocompatibility. Polymers grown at different sites (glycans, proteins, lipids) have different membrane retention time and exhibit differential effects on the recognition behaviors of cellular glycans. Of particular importance is the achievement of in situ copolymerization of glycomonomers on the outermost natural glycan sites of cell membrane, building a biomimetic glycocalyx with distinct recognition properties.
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- 2023
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6. Relevance-Based Reconstruction Using an Empirical Mode Decomposition Informer for Lithium-Ion Battery Surface-Temperature Prediction
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Chao Li, Yigang Kong, Changjiang Wang, Xueliang Wang, Min Wang, and Yulong Wang
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lithium-ion batteries ,informer ,empirical mode decomposition ,relevance reconstruction ,thermal runaway ,temperature prediction ,Technology - Abstract
Accurate monitoring of lithium-ion battery temperature is essential to ensure these batteries’ efficient and safe operation. This paper proposes a relevance-based reconstruction-oriented EMD-Informer machine learning model, which combines empirical mode decomposition (EMD) and the Informer framework to estimate the surface temperature of 18,650 lithium-ion batteries during charging and discharging processes under complex operating conditions. Initially, based on 9000 data points from the U.S. NASA Prognostics Center of Excellence’s random battery-usage dataset, where each data point includes three features: temperature, voltage, and current, EMD is used to decompose the temperature data into intrinsic mode functions (IMFs). Subsequently, the IMFs are reconstructed into low-, medium-, and high-correlation components based on their correlation with the original data. These components, along with voltage and current data, are fed into sub-models. Finally, the model captures the long-term dependencies among temperature, voltage, and current. The experimental results show that, in single-step prediction, the mean squared error, mean absolute error, and maximum absolute error of the model’s predictions are 0.00095, 0.02114, and 0.32164 °C; these metrics indicate the accurate prediction of the surface temperature of lithium-ion batteries. In multi-step predictions, when the prediction horizon is set to 12 steps, the model achieves a hit rate of 93.57% where the maximum absolute error is within 0.5 °C; under these conditions, the model combines high predictive accuracy with a broad predictive range, which is conducive to the effective prevention of thermal runaway in lithium-ion batteries.
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- 2024
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7. Optimal decision‐making method of transmission lines' maintenance sequence under extreme ice disasters
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Haitao Wang, Zedong Yang, Ning Wang, Haiyang Jiang, Yu Cui, Jinchi Han, Shuguang Li, and Changjiang Wang
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extreme ice disasters, resilience, resilience improvement ,transmission line maintenance, transmission system ,Energy industries. Energy policy. Fuel trade ,HD9502-9502.5 ,Production of electric energy or power. Powerplants. Central stations ,TK1001-1841 - Abstract
Abstract Prolonged exposure of power transmission lines to extreme ice disasters in the atmosphere disrupts transmission. First, this study establishes a comprehensive failure probability model for the impact of extreme ice disasters on the transmission lines to better understand and improve the transmission lines' ability to withstand such disasters. It predicts the line failure probability based on the initial design data of the lines. Second, the system's weak points are identified, and the fault scenario set is established using the Monte Carlo state sampling method. Next, the system's state is calculated using the resilience assessment index and the DC optimal load reduction model. Finally, an optimal decision‐making method for the transmission line maintenance sequence is proposed from the post‐disaster maintenance scheduling perspective. Considering the travel time and maintenance effect, this method can effectively restore the system state in response to extreme ice disasters. The IEEE 30‐bus power system is taken as an example of simulation verification. The results show that this method can effectively complete the system load state restoration and improve the transmission system's resilience. It also has certain practicality and good practical application values.
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- 2023
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8. Improvement of Blocked Long-Straight Flow Channels in Proton Exchange Membrane Fuel Cells Using CFD Modeling, Artificial Neural Network, and Genetic Algorithm
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Guodong Zhang, Changjiang Wang, Shuzhan Bai, Guoxiang Li, Ke Sun, and Hao Cheng
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PEMFC ,baffle ,CFD ,ANN ,flow channel ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
To further improve the performance of the Proton Exchange Membrane Fuel Cell (PEMFC), in this paper, we designed a blocked flow channel with trapezoidal baffles, and geometric parameters of the baffle were optimized based on CFD simulation, Artificial Neural Network (ANN), and single-objective optimization methods. The analysis of velocity, pressure, and oxygen distribution in the cathode flow channel shows that the optimized trapezoidal baffle can improve oxygen transport during the reaction. The comparison of the optimization model with the straight flow channel model and the rectangular baffle model shows that the power density of the optimized model is 4.0% higher than that of the straight flow channel model at a voltage of 0.3 V, and the pressure drop is only 37.83% of that of the rectangular baffle model. For on-road PEMFC with a voltage of 0.6 V, the influence of pump power is significant, and the optimized trapezoidal baffle model has a net power increase of 1.47% compared to the rectangular baffle model at 50% pump efficiency and 3.94% at 30% pump efficiency.
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- 2024
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9. Automatic quantification of morphology on magnetic resonance images of the proximal tibia
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Dongdong He, Yuan Guo, Xushu Zhang, Changjiang Wang, Zihui Zhao, Weiyi Chen, Kai Zhang, and Binping Ji
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Proximal tibia ,Feature fusion ,Quantitative analysis ,Automatic segmentation ,Intelligent quantification ,Medical technology ,R855-855.5 - Abstract
The morphological quantification of the proximal tibia of the knee joint is important in knee replacement. Accurate knowledge of these parameters provides the basis for design of the tibial prosthesis and its fixation. Ideally, a prosthesis that is suitable for the morphological characteristics of Chinese knees is needed. In this paper, a deep learning automatic network framework is designed to achieve automatic segmentation and automatic quantitative analysis of magnetic resonance images of the tibia. An enhanced feature fusion network structure is designed, including high and low-level feature fusion path modules to create accurate segmentation of the tibia. A new method of extracting feature points and lines from outline contours of the proximal tibia is designed to automatically calculate six clinical morphological linear parameters of the tibia in real-time. The final result is an automatic visualisation of the tibial contour and automated extraction of tibial morphometric parameters. Validation of the results from our system against a gold standard obtained by manual processing by expert clinicians showed the Dice coefficient to be 0.97, the accuracy to be 0.98, and the correlation coefficients for all six morphological parameters of the automatic quantification of the tibia are above 0.96. The gender-specific study found that the values of the proximal tibial linear parameters of internal and external tibial diameter, anterior and posterior diameter, lateral plateau length, lateral plateau width, medial plateau length, and medial plateau width in male patients are significantly greater than in female patients (all P values
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- 2023
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10. Convolutional neural network‐based power system frequency security assessment
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Changjiang Wang, Benxin Li, Chunxiao Liu, and Peng Li
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error analysis ,measurement errors ,power engineering computing ,power generation planning ,power grids ,power system security ,Production of electric energy or power. Powerplants. Central stations ,TK1001-1841 ,Energy industries. Energy policy. Fuel trade ,HD9502-9502.5 - Abstract
Abstract Weak inertia characteristics of power systems with high penetrations of renewables have become a prominent problem for frequency security. To solve this problem, a convolutional neural network (CNN)‐based deep learning approach is applied to realize rapid frequency security assessment (FSA). First, the time series frequency security feature is autonomously mined from the wide‐area measurement data to serve as the input data. By doing so, the complex construction process of frequency security feature quantity is avoided. A deep learning structure is then used to establish a non‐linear mapping relationship between time series features and frequency security indicators to realize end‐to‐end power system frequency security prediction. Next, the evaluation accuracy of the proposed approach is optimized by tuning the key parameters in the CNN‐based evaluation model. Through data measurement error analysis and a wind penetration sensitivity study, the anti‐interference performance of the proposed evaluation model is demonstrated. Finally, the effectiveness of the CNN‐based FSA is verified by case studies of a modified 16‐machine 68‐node system and the China Southern Power Grid.
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- 2021
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11. Construction and characterization of a contagious ecthyma virus double-gene deletion strain and evaluation of its potential as a live-attenuated vaccine in goat
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Zhen Zhu, Guanggang Qu, Jige Du, Changjiang Wang, Yong Chen, Zhanning Shen, Zhiyu Zhou, Chunsheng Yin, and Xiaoyun Chen
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ORFV ,double gene deletion ,cbp ,gif ,recombinant virus ,safety ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Contagious ecthyma is a highly contagious viral disease with zoonotic significance caused by orf virus (ORFV) that affects domestic, ruminants and humans. Live attenuated virus and attenuated tissue culture vaccines are widely used in the fight against ORFV, however, the conventional attenuated vaccine strains have many drawbacks. The aim of this project was to construct a promising contagious ecthyma vaccine strain with safety, high protection efficacy and accessibility by genetic manipulation to against the disease. Using a natural ORFV-GS14 strain as the parental virus, recombinant virus, rGS14-ΔCBP-ΔGIF, with double deletions in the genes encoding the chemokine binding protein (CBP) and granulocyte/macrophage colony-stimulating factor inhibitory factor (GIF) was generated and characterized in vitro and in vivo. Results showed that the growth kinetics curve of rGS14-ΔCBP-ΔGIF and parental virus was consistent, both reaching plateau phase at 48 h post infection, which indicated that the double deletion of cbp and gif genes had little impact on the replication properties of the recombinant virus in primary goat testis (PGT) cell cultures compared with the parental virus. The safety of the double gene-deleted virus was evaluated in lambs. The lambs were monitored for 21 days post infection of the recombinant virus and no ORFV associated symptoms were observed in 21 days post-infection except for slight fever and anorexia in 5 days post-infection, and all lambs inoculated with either recombinant virus or PBS exhibited no clinical signs. To assess the protection efficacy of the rGS14-ΔCBP-ΔGIF, groups of four lambs each were inoculated with rGS14-ΔCBP-ΔGIF, rGS14-ΔCBP, rGS14-ΔGIF or PBS and challenged by a wild type virulent ORFV strain that was isolated from proliferative scabby lesions tissues of infected goat at 21-day post-inoculation. During 14 days post-challenging, lambs inoculated with rGS14-ΔCBP-ΔGIF all remained healthy with unimmunized group all infected, while the single gene-deleted viruses only protected 40% to 50% animals. These results indicated that the double gene-deleted recombinant virus could provide complete protection against virulent ORFV challenging. In conclusion, the double gene-deleted recombinant virus strain, rGS14-ΔCBP-ΔGIF, would be a promising candidate vaccine strains with safety, high protection efficacy and availability.
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- 2022
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12. Expert consensus statement on therapeutic drug monitoring and individualization of linezolid
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Bin Lin, Yangmin Hu, Ping Xu, Tao Xu, Chunyan Chen, Le He, Mi Zhou, Zhangzhang Chen, Chunhong Zhang, Xuben Yu, Luo Fang, Junfeng Zhu, Yanlan Ji, Qun Lin, Hengbin Cao, Youqin Dai, Xiaoyan Lu, Changcheng Shi, Li Li, Changjiang Wang, Xumei Li, Qiongyan Fang, Jing Miao, Zhengyi Zhu, Guangyong Lin, Haichao Zhan, Shiwen Lv, Yalan Zhu, Xinjun Cai, Yin Ying, Meng Chen, Qiong Xu, Yiwen Zhang, Yubin Xu, Pea Federico, Saiping Jiang, and Haibin Dai
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linezolid ,therapeutic drug monitoring ,individualization ,expert consensus ,pharmacotherapy ,Public aspects of medicine ,RA1-1270 - Abstract
Linezolid is an oxazolidinone antibacterial drug, and its therapeutic drug monitoring and individualized treatment have been challenged since its approval. With the in-depth clinical research of linezolid, we have changed our attitude toward its therapeutic drug monitoring and our view of individualized treatment. On the basis of summarizing the existing clinical studies, and based on the practical experience of each expert in their respective professional fields, we have formed this expert consensus. Our team of specialists is a multidisciplinary team that includes pharmacotherapists, clinical pharmacology specialists, critical care medicine specialists, respiratory specialists, infectious disease specialists, emergency medicine specialists and more. We are committed to the safe and effective use of linezolid in patients in need, and the promotion of its therapeutic drug monitoring.
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- 2022
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13. Petrogenesis of the Laoshan Suite in the Jiaodong Peninsula (Eastern China): An Oxidized Low Ba–Sr A1-Type Granite
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Jian Li, Changwei Wang, Mingchun Song, Changjiang Wang, Shiyong Li, Xiao Liu, and Qingyi Cui
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A1-type granite ,high oxygen fugacity ,adakitic rocks ,Laoshan suite ,Jiaodong Peninsula ,Mineralogy ,QE351-399.2 - Abstract
The Jiaodong Peninsula is closely related to Mesozoic granites in terms of spatial and temporal aspects. However, the specific association between the genesis of gold mineralization and these granites remains unclear. It is also ambiguous why Laoshan-type granites, which are similar to Mesozoic granites, are not gold mineralized. In this study, we analyzed the Laoshan granites and compiled Mesozoic magmatic rock data (Linglong, Guojialing, and Weideshan suites) of the Jiaodong Peninsula. We performed whole-rock major and trace elements, LA–ICP–MS zircon U–Pb geochronology and geochemistry analyses. Our zircon U–Pb data denote that the Laoshan granite was emplaced during the 118 ± 1 Ma. The Laoshan granite is characterized by high SiO2 content (76.03–80.28 wt.%), high TFe2O3/MgO (11.1–27.1) and Ga/Al (3.0–3.5) ratios, high zircon saturation temperature (809–850 °C), and negative Eu (Eu/Eu* = 0.05–0.08) anomalies, showing A-type granite characteristics. Furthermore, the Laoshan granite is identified as an A1-type granite with low Ba (33.1–42.0 ppm) and Sr (14.1–21.0 ppm) contents. It was formed in an extensional tectonic environment induced by the subducting slab roll-back of the Paleo-Pacific Plate, mainly from the partial melting of lower crustal materials, mixed with a small amount of mantle components. Zircon trace elements indicate that the Laoshan suite had relatively high oxygen fugacity and temperature (ΔFMQ = + 2.43 to + 4.22, T-Ti in zircon (mean) = 796 °C) compared to the pre-mineralization and contemporaneous mineralization magma. We propose that oxidized adakitic magma (Weideshan suite) may contribute to the enrichment and mineralization of gold. Although Laoshan-type granite also has a high oxygen fugacity, its location is distant from the ore-controlling faults, which ultimately hinders the formation of gold mineralization. From the Jurassic to the Cretaceous, the tectonic and geochemical properties of magmatic rocks in the Jiaodong Peninsula have changed, and gold deposits are formed in such a transitional process (compression to extension, reduction to oxidation).
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- 2023
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14. Additive manufacturing of Bio-inspired ceramic bone Scaffolds: Structural Design, mechanical properties and biocompatibility
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Chen Jiao, Deqiao Xie, Zhijing He, Huixin Liang, Lida Shen, Youwen Yang, Zongjun Tian, Guofeng Wu, and Changjiang Wang
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Ceramic DLP ,Bio-inspired bone scaffold ,Mechanical properties ,Shrinkage ,Biocompatibility ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
Ideal bone scaffolds require good biocompatibility and moderate mechanical properties, so as to promote the proliferation and differentiation of osteoblast cells, and achieve the good bone repair. Inspired by the porous structure of cancellous bone, 15 groups of bone scaffolds with variable irregularity (Ir1-5) and porosity (35.53–61.75%) were designed and fabricated by ceramic digital light processing (DLP) using 20 wt% hydroxyapatite doped zirconia as the matrix material. The effects of structural parameters and material on mechanical properties and biocompatibility were studied. The shrinkage test results showed that the density of scaffolds was mainly affected by the porosity. The mechanical test results showed that Ir2 and Ir3 scaffolds had better compressive behaviors, and the compressive strength could be increased by 30% by regulating the irregularity. All scaffolds showed comparable mechanical properties to that of cancellous bone. Cell experiments showed that the effect of structure on cell proliferation, differentiation, and mineralization was most evident at the early stage of implantation. Meanwhile, the biocompatibility variation with the irregularity was consistent with mechanical properties. This study proved that a bio-inspired bone scaffold with excellent comprehensive properties could be obtained through reasonable design.
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- 2022
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15. Impact of the Operation of Distribution Systems on the Resilience Assessment of Transmission Systems under Ice Disasters
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Zhiwei Wang, Xiao Ma, Song Gao, Changjiang Wang, and Shuguang Li
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ice disaster ,transmission system ,distribution system ,resilience evaluation ,load shedding ,Technology - Abstract
Ice disasters, such as ice storms, can cause serious damage to power systems. To understand ice disasters’ influences on power systems, this paper introduces a resilience evaluation frame for transmission and distribution systems during ice disasters. First, we built a vulnerability model for transmission and distribution systems under ice disaster weather. Then, we established an optimal load power shedding model for transmission and distribution systems. After this, according to the vulnerability model and the optimal power load power shedding model, we generated the fault scenario set of a system in the influence of an ice disaster. According to the curve of system resilience, we propose two resilience evaluation indices of transmission and distribution systems under ice disaster weather. Finally, we verified the efficacy and rationalization of the established resilience evaluation framework with an example in which a transmission and distribution system is coupled with a six-bus transmission system and two distribution systems. This study highlights the necessity of resilience assessment of transmission and distribution systems during ice disasters.
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- 2023
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16. Biomechanical Changes of the Tibial-femoral Joint of the Knee Joint with Fixed and Moving Axes Under Different Flexion States
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Hui GAO, Chenyan WANG, Zhi LI, Wenzhi WANG, Changjiang WANG, Jing CHEN, and Weiyi CHEN
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knee joint ,fixed-axis prosthesis ,moving-axis prosthesis ,dynamic knee flexion ,biomechanics ,finite element analysis ,Chemical engineering ,TP155-156 ,Materials of engineering and construction. Mechanics of materials ,TA401-492 ,Technology - Abstract
Total knee arthroplasty is an effective method for treating knee diseases, but there is no unified view on the advantages and disadvantages of fixed-axis and mobile-axis knee prostheses. In the past, there have been comparative verifications of the two prostheses, but most of which are static simulations. In this paper, a finite element model of a healthy knee joint was built; then a knee joint containing the above two prostheses was established; finally, by dynamically simulating the knee flexion motion, the contact stress and contact area of the tibia-femoral joint were calculated. The results show that for the fixed and mobile axis artificial knee joints, in the range of 0° to 90° knee flexion angle, the contact area shifts from the front of the tibial liner to the rear, and the contact stress of the tibiofemoral joint continues to increase, reaching maximum at 90°. With respect to the fixed shafts, the contact pressure of the tibiofemoral joint between the moving shafts is smaller, and the contact area is larger. As the knee bending angle deepens, the contact stress on the polyethylene pads of the two prostheses gradually increases, and the contact area gradually decreases. No significant difference exists between the two prostheses in the contact stress, but there is a significant difference in the contact area of the two prostheses. The results suggest that under the same contact stress, the larger the contact area is, the less stress concentration is likely to happen, that is, the prosthesis is not prone to wear. This can extend the service life of the knee joint. Therefore, the mobile axis knee prosthesis is better than the fixed axis knee joint prosthesis. This study may provide a valuable reference for the selection of prosthesis transplantation types in clinic.
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- 2021
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17. Achieving the composite end‐point of glycated hemoglobin
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Xinhua Xiao, Changjiang Wang, Xiaoyang Lai, Bin Zhang, Liqun Gu, Jianing Hou, and Zhiguang Zhou
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Composite end‐point ,Dulaglutide ,Type 2 diabetes ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Abstract Aims/Introduction To assess the effect of dulaglutide (DU) 1.5/0.75 mg in comparison with glimepiride (GLIM) or insulin glargine (GLAR) on the composite end‐point in Chinese type 2 diabetes patients. Materials and Methods Post‐hoc analyses of two randomized phase III trials (NCT01644500 and NCT01648582) were carried out using Fisher’s exact test. The primary composite end‐point was the number of patients reaching glycated hemoglobin (HbA1c)
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- 2020
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18. Development of Immunochromatographic Assay for the Rapid Detection of Mycoplasma capricolum subsp. capripneumoniae Antibodies
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Zhen Zhu, Guanggang Qu, Changjiang Wang, Lei Wang, Jige Du, Qianlin Li, Zhiqiang Shen, and Xiaoyun Chen
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Mycoplasma capricolum subsp. capripneumoniae ,recombinant P20 protein ,colloidal gold-based immunochromatographic strip ,serum antibody ,rapid on-site diagnosis ,Microbiology ,QR1-502 - Abstract
Mycoplasma capricolum subsp. capripneumoniae (Mccp) is the cause of contagious caprine pleuropneumonia (CCPP), which is a highly significant respiratory disease in goats leading to significant economic losses in Africa and Asia. Currently available procedures for the diagnosis of CCPP have some limitations in sensitivity, specificity, operation time, requirement of sophisticated equipment or skilled personnel, and cost. In this study, we developed a rapid, sensitive, and specific colloidal gold-based immunochromatographic assay (GICA) strip for the efficient on-site detection of antibodies against Mccp in the serum within 10 min. For the preparation of this colloidal GICA strip, recombinant P20 protein, the membrane protein of Mccp, was expressed by Escherichia coli prokaryotic expression system after purification was used as the binding antigen in the test. The rabbit anti-goat immunoglobulin G labeled with the colloidal gold was used as the detection probe, whereas the goat anti-rabbit immunoglobulin G was coated on the nitrocellulose membrane as the control line. The concentration of the coating antibody was optimized, and the effectiveness of this colloidal GICA strip was evaluated. Our results proved that the detection limit of the test strip was up to 1:64 dilutions for the Mccp antibody-positive serum samples with no cross-reactivity with other pathogens commonly infecting small ruminants,including goat pox virus, peste des petits ruminants virus, foot-and-mouth disease virus type A, or other mycoplasmas. Moreover, the colloidal GICA strip was more sensitive and specific than the indirect hemagglutination assay for the detection of Mccp antibodies. The 106 clinical serum samples were detected by the colloidal GICA strip compared with the complement fixation test, demonstrating an 87.74% concordance with the complement fixation test. This novel colloidal GICA strip would be an effective tool for the cost-effective and rapid diagnosis of CCPP in the field.
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- 2022
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19. Modeling of Overpressure Generation–Evolution of the Paleogene Source Rock and Implications for the Linnan Sag, Eastern China
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Chao Li, Likuan Zhang, Xiaorong Luo, Bing Wang, Yuhong Lei, Ming Cheng, Hongmei Luo, Changjiang Wang, and Lan Yu
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overpressure mechanism ,paleo-pressure evolution ,basin modeling ,hydrocarbon migration ,Shahejie formation ,Science - Abstract
Subsurface pore pressure affects the direction of hydrocarbon migration, determines the distribution of the hydrocarbon reservoir, and provides scientific reference for drilling planning. Overpressures are widespread in the Paleogene Shahejie Formation in the Linnan Sag, which is closely related to the distribution of oil reservoir. However, the overpressure generation mechanisms are undefined, let alone the relationship between the evolution of paleo-overpressure and hydrocarbon migration in the Linnan Sag, which brings great challenges for the understanding of oil accumulation and future oil exploration. Basin modeling was carried out to solve the issue of quantitative evaluation of overpressure mechanisms and to restore the overpressure evolution of the Paleogene source rocks. The implications for the pore pressure prediction and oil migration in the Linnan Sag were further discussed. The modeling results show that the disequilibrium compaction of mudstones is a dominated overpressure mechanism of source rocks in the Linnan Sag, which accounts for approximately 90% of the measured overpressure in the region. The remainder part of overpressure was generated by hydrocarbon generation; however, the effects of hydrocarbon generation on overpressure evolution were limited in the intervals deeper than 4000 m. The significance of the overpressure mechanism is that the porosity-dependent method will give a satisfactory pressure prediction result in the current exploration depth range (3800–4300 m). The overpressure evolution of the source rock has undergone a cycle of “accumulation-dissipation-reaccumulation,” which corresponds to the age of 45.5–24.0 Ma (Es3-Ed period), 24.6–14.0 Ma (Ed period), and 14.0–0 Ma (Ng-Qp period). The oil potential of the Es3l shows good inheritance with the overpressure in the source rock, indicating overpressure increased the driving force for oil migration. The oil released from the source rock has a trend to migration from the center of the sag to the uplift belt, which is also indicated by the physical properties of crude oil. The knowledge of the generation and evolution of overpressure has great significance for further exploration in the Linnan Sag and other extensional basins.
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- 2022
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20. Oxygen Vacancy-Mediated Activates Oxygen to Produce Reactive Oxygen Species (ROS) on Ce-Modified Activated Clay for Degradation of Organic Compounds without Hydrogen Peroxide in Strong Acid
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Tianming Wu, Jing Cui, Changjiang Wang, Gong Zhang, Limin Li, Yue Qu, and Yusheng Niu
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advanced oxidation process ,strong acid wastewater ,reactive oxygen ,organic compounds ,electron transfer ,Chemistry ,QD1-999 - Abstract
The treatment of acid wastewater to remove organic matter in acid wastewater and recycle valuable resources has great significance. However, the classical advanced oxidation process (AOPs), such as the Fenton reaction, encountered a bottleneck under the conditions of strong acid. Herein, making use of the oxidation properties of CeAY (CeO2@acid clay), we built an AOPs reaction system without H2O2 under a strong acid condition that can realize the transformation of organic matter in industrial wastewater. The X-ray photoelectron spectroscopy (XPS) proved that the CeAY based on Ce3+ as an active center has abundant oxygen vacancies, which can catalyze O2 to produce reactive oxygen species (ROS). Based on the electron spin-resonance spectroscopy spectrum and radical trapping experiments, the production of •O2– and •OH can be determined, which are the essential factors of the degradation of organic compounds. In the system of pH = 1.0, when 1 mg CeAY is added to 10 mL of wastewater, the degradation efficiency of an aniline solution with a 5 mg/L effluent concentration is 100%, and that of a benzoic acid solution with a 100 mg/L effluent concentration is 50% after 10 min of reaction. This work may provide novel insights into the removal of organic pollutants in a strong acid water matrix.
- Published
- 2022
- Full Text
- View/download PDF
21. A Novel Cost-Effective Nanobody against Fumonisin B1 Contaminations: Efficacy Test in Dairy Milk and Chickens
- Author
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Yi Chen, Guanggang Qu, Hongkun Quan, Yihui Wang, Changjiang Wang, Md Atiqul Haque, and Cheng He
- Subjects
fumonisin B1 ,nanobody ,phage-display technology ,detoxification ,efficacy test ,Medicine - Abstract
Background: Fumonisin B1 (FB1) is a secondary metabolite produced mainly by Fusarium verticillioides or Fusarium proliferatum. It poses a huge threat to the sustainable animal industry and human health as well via food chains (egg, meat and milk). Although E. coli-expressed nanobodies are documented for diagnostic applications, nanobodies remain elusive as FB1 detoxifiers in feed and food. Results: In the present study, the E. coli-expressed nanobody was assessed to remove FB1 in fresh milk, embryonated eggs and broilers. Firstly, 2 alpacas received intramuscularly FB1-adjuvanted BSA 6 times, and then the variable domain of the heavy-chain antibody (VHH) of fb1 genes were amplified to clone into the pCANTAB 5 E vector in order to generate a VHH-FB1 phage antibody display library, yielding 3.4 × 1010 capacity with 96.7% positivity. Afterwards, 5 anti-FB1 nanobodies were expressed and identified. Furthermore, maximal 43.2% FB1 was removed from milk by 1:2000 concentration of nanobody 5 (Nb5). Furthermore, SPF-embryonated eggs were inoculated into albumens with nanobody-treated FB1. The Nb5 group yielded an 83.3% hatching rate, higher body weight, lower gizzard ulceration and fewer FB1 residuals. In order to warrant the above results, 50 broilers aged 10 days were received orally with 20 ppm of FB1 for 20 days. At the same time, birds were fed orally with 50 μg of Nb5 or bivalent nanobody 11 (BiNb11). Finally, the Nb5 group showed a higher relative body weight gain and lower gastric ulcerations and fewer inflammations in the thymus and bursa. Conclusions: Based on the above evidence, the Nb5 nanobody may be considered as an additional FB1 detoxifier, contributing to FB1 decontamination.
- Published
- 2022
- Full Text
- View/download PDF
22. Thermal Benefits of a Cooling Guide Vane for an Electrical Machine in an Electric Ducted Fan
- Author
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Xuanyang Hu, Yuping Qian, Chaofan Dong, Yangjun Zhang, Changjiang Wang, and Weilin Zhuge
- Subjects
UAM ,eVTOL ,thermal management ,electrical machine ,heat pipe ,Motor vehicles. Aeronautics. Astronautics ,TL1-4050 - Abstract
Equipped with a distributed electric propulsion system, eVTOL is the primary vehicle for future urban air mobility. The electrical machine determines the weight of the distributed electric propulsion system, and the cooling capability determines the electrical machine’s weight. The electrical machine with air cooling is preferred for eVTOL due to its simplicity and light weight. This paper presents a new air-cooling system for an electrical machine in an electric ducted fan propulsion system. The novel cooling system consists of a cooling guide vane with a heat pipe (CGVHP), which is located downstream of the ducted fan rotating blade. The heated end of the heat pipe is inserted into the stator end windings and the cold end is inserted into the cooling guide vane. The heat generated in the windings is transmitted to the cooling guide vane by the heat pipe and dissipated by the forced convection using low-temperature air passing through the ducted fan. The cooling performance of the cooling guide vane with the heat pipe was numerically simulated, considering several critical design factors. The simulation results showed that the proposed CGVHP can be helpful for reducing the winding temperature of the electrical machine by over 25.5 °C at the peak power condition of 15.7 kW.
- Published
- 2022
- Full Text
- View/download PDF
23. A Practical Method to Compensate for the Effect of Echo Spacing on the Shale NMR T2 Spectrum
- Author
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Xinmin Ge, Jier Zhao, Fengsheng Zhang, Yiren Fan, Jianyu Liu, Jianchao Cai, Shengdong Nie, and Changjiang Wang
- Subjects
low field NMR ,echo spacing ,T2 spectrum ,amplitude correction ,shale ,Astronomy ,QB1-991 ,Geology ,QE1-996.5 - Abstract
Abstract The low field nuclear magnetic resonance (NMR) technique is considered as one of the most effective methods to characterize the pore size and fluid distribution in geophysical prospecting. The signal of NMR is noninvasive and lithology independent, while the effect of NMR responses influenced by the echo spacing (TE) is significant when applied to unconventional reservoirs which are featured with ultralow porosity and pore radius. TE is expected to be as low as possible to ensure most of the hydrogen signals are accounted for, but it is hard to achieve in downhole NMR measurement. We develop a practical method to compensate for the influence of TE on the transversal relaxation time (T2) spectrum of shale. Based on the experiments with different TE, the relationship between the NMR calibrated porosity and the TE is established to recover the signal amplitude. The effect of TE on the peak position is investigated, and then an empirical equation is constructed to move the peak position to its original state. By the above two‐step correction algorithm, the T2 spectrums of shale at large TE are compensated precisely. The proposed method provides an effective way to obtain the real T2 spectrum and achieves good results in the downhole NMR data processing of shale reservoir.
- Published
- 2019
- Full Text
- View/download PDF
24. CircAgtpbp1 Acts as a Molecular Sponge of miR-543-5p to Regulate the Secretion of GH in Rat Pituitary Cells
- Author
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ZeWen Yu, WenZhi Ren, Tian Wang, WeiDi Zhang, ChangJiang Wang, HaoQi Wang, Fei Gao, and Bao Yuan
- Subjects
circRNA ,miRNA sponge ,GH ,pituitary ,animal growth ,Veterinary medicine ,SF600-1100 ,Zoology ,QL1-991 - Abstract
CircRNAs have been identified to be expressed differently and stably in numerous species and tissues, but their functions in growth hormone (GH) secretion are still largely unknown. In summary, we have revealed a circRNA-miRNA-mRNA network that may play a biological role in the rat pituitary gland. First, we verified the chromosome location information of circAgtpbp1 according to sequencing analysis. The circAgtpbp1 characteristics were authenticated through PCR, qRT–PCR, treating with RNase and fluorescent in situ hybridization (FISH). Second, we detected the expression pattern of circAgtpbp1 in the rat anterior pituitary by qRT–PCR. We also designed circAgtpbp1 siRNA and constructed overexpression plasmid to evaluate the effect of circAgtpbp1 function on GH secretion by qRT–PCR, ELISA and Western blot. CircAgtpbp1 is a stable, truly circular molecule. We found that circAgtpbp1 interacted with miR-543-5p and can regulate GH secretion in pituitary cells through a circAgtpbp1-miR-543-5p-GH axis. Overall, the evidence generated by our study suggests that circAgtpbp1 can act as a sponge of miR-543-5p to reduce the inhibitory effect of miR-543-5p on Gh1 and further promote GH secretion. These findings expand our existing knowledge on the mechanisms of hormone regulation in the pituitary gland.
- Published
- 2021
- Full Text
- View/download PDF
25. Mechanical Properties of In-Situ Synthesis of Ti-Ti3Al Metal Composite Prepared by Selective Laser Melting
- Author
-
Yize Li, Huixin Liang, Zongjun Tian, Youwen Yang, Deqiao Xie, Lei Zhu, Lida Shen, and Changjiang Wang
- Subjects
selective laser melting ,cp-ti ,aluminum alloy ,microhardness ,wear performance ,compressive strength ,Mining engineering. Metallurgy ,TN1-997 - Abstract
Titanium composite strengthened by Ti3Al precipitations is considered to be one of the excellent materials that is widely used in engineering. In this work, we prepared a kind of Ti-Ti3Al metallic composite by in-situ synthesis technology during the SLM (selective laser melting) process, and analyzed its microstructure, wear resistance, microhardness, and compression properties. The results showed that the Ti-Ti3Al composite, prepared by in-situ synthesis technology based on SLM, had more homogeneous Ti3Al-enhanced phase dispersion strengthening structure. The grain size of the workpiece was about 1 μm, and that of the Ti3Al particle was about 200 nm. Granular Ti3Al was precipitated after the aluminum-containing workpiece formed, with a relatively uniform distribution. Regarding the mechanical properties, the hardness (539 HV) and the wear resistance were significantly improved when compared with the Cp-Ti workpiece. The compressive strength of the workpiece increased from 886.32 MPa to 1568 MPa, and the tensile strength of the workpiece increased from 531 MPa to 567 MPa after adding aluminum. In the future, the combination of in-situ synthesis technology and SLM technology can be used to flexibly adjust the properties of Ti-based materials.
- Published
- 2019
- Full Text
- View/download PDF
26. The Size Effect on Forming Quality of Ti–6Al–4V Solid Struts Fabricated via Laser Powder Bed Fusion
- Author
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Huixin Liang, Deqiao Xie, Yuyi Mao, Jianping Shi, Changjiang Wang, Lida Shen, and Zongjun Tian
- Subjects
selective laser melting ,Ti–6Al–4V alloy ,metallurgical quality ,mechanical properties ,Mining engineering. Metallurgy ,TN1-997 - Abstract
Laser powder bed fusion (LPBF) is useful for manufacturing complex structures; however, factors affecting the forming quality have not been clearly researched. This study aimed to clarify the influence of geometric characteristic size on the forming quality of solid struts. Ti–6Al–4V struts with a square section on the side length (0.4 to 1.4 mm) were fabricated with different scan speeds. Micro-computed tomography was used to detect the struts’ profile error and defect distribution. Scanning electron microscopy and light microscopy were used to characterize the samples’ microstructure. Nanoindentation tests were conducted to evaluate the mechanical properties. The experimental results illustrated that geometric characteristic size influenced the struts’ physical characteristics by affecting the cooling condition. This size effect became obvious when the geometric characteristic size and the scan speed were both relatively small. The solid struts with smaller geometric characteristic size had more obvious size error. When the geometric characteristic size was smaller than 1 mm, the nanohardness and elastic modulus increased with the increase in scan speed, and decreased with the decline of the geometric characteristic size. Therefore, a relatively high scan speed should be selected for LPBF—the manufacturing of a porous structure, whose struts have small geometric characteristic size.
- Published
- 2019
- Full Text
- View/download PDF
27. Properties of Jet-Plated Ni Coating on Ti Alloy (Ti6Al4V) with Laser Cleaning Pretreatment
- Author
-
Xiao Wang, Mingyang Xu, Zhanwen Wang, Lida Shen, Mingbo Qiu, Zongjun Tian, Muhammad Naveed Ahsan, and Changjiang Wang
- Subjects
laser cleaning ,titanium alloy ,jet electrodeposition ,friction properties ,Mining engineering. Metallurgy ,TN1-997 - Abstract
The surface mechanical properties of the Selective Laser Melting (SLM) formed Ti6Al4V samples were improved by adopting a novel laser cleaning pretreatment process combined with a jet electrodeposition process. This paper aimed to investigate the effects of different laser powers on the morphologies and adhesions of the nickel coatings. The advantages of the laser cleaning process are no grinding, no contact, high efficiency and environmental protection. The morphologies, adhesion, wear resistance, and hardness of the coatings were characterized. The results indicate that when the laser energy density reached 20% (4 J/cm2), the contaminations on the substrate and the oxide layer were removed and the crystalline grain of the coating was 15.3 nm. The shallow pits generated by laser burning increased the adhesion of the coatings. In addition, when the laser energy density increased to 6 J/cm2, a yellow oxide layer was produced on the surface of the cleaned titanium alloy. Moreover, the wear resistance of the titanium alloy after the nickel plating was improved. The wear volume was only 0.046 mm3, and the hardness increased to 1967.6 N/mm2.
- Published
- 2019
- Full Text
- View/download PDF
28. Cause of Angular Distortion in Fusion Welding: Asymmetric Cross-Sectional Profile along Thickness
- Author
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Deqiao Xie, Jianfeng Zhao, Huixin Liang, Shuang Liu, Zongjun Tian, Lida Shen, and Changjiang Wang
- Subjects
angular distortion ,cross-section ,weld seam ,bending moment ,welding ,Technology ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Microscopy ,QH201-278.5 ,Descriptive and experimental mechanics ,QC120-168.85 - Abstract
Angular distortion is a common problem in fusion welding, especially when it comes to thick plates. Despite the fact that various processes and influencing factors have been discussed, the cause of the angular distortion has not been clearly revealed. In this research, the asymmetry of cross-sectional profile along thickness is considered of great importance to the angular distortion. A theoretical model concerning the melting-solidification process in fusion welding was established. An expression of the angular distortion was formulated and then validated by experiments of laser welding 316L stainless steel. The results show that the asymmetric cross-sectional profile is a major contributory factor towards the angular distortion mechanism. The asymmetry of cross-section profile along thickness causes the difference between two bending moments in the lower and upper parts of the joint. This is the difference that drives the angular distortion of the welded part. Besides, the asymmetry of cross-section profile is likely to be influenced by various processes and parameters, thereby changing the angular distortion.
- Published
- 2018
- Full Text
- View/download PDF
29. Assumption of Constraining Force to Explain Distortion in Laser Additive Manufacturing
- Author
-
Deqiao Xie, Jianfeng Zhao, Huixin Liang, Zongjun Tian, Lida Shen, Meng Xiao, Muhammad Naveed Ahsan, and Changjiang Wang
- Subjects
distortion ,stress ,laser melting deposition ,additive manufacturing ,Technology ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Microscopy ,QH201-278.5 ,Descriptive and experimental mechanics ,QC120-168.85 - Abstract
Distortion is a common but unrevealed problem in metal additive manufacturing, due to the rapid melting in metallurgy and the intricate thermal-mechanical processes involved. We explain the distortion mechanism and major influencing factors by assumption of constraining force, which is assumed between the added layer and substrate. The constraining force was set to act on the substrate in a static structural finite element analysis (FEA) model. The results were compared with those of a thermal-mechanical FEA model and experiments. The constraining force and the associated static structural FEA showed trends in distortion and stress distribution similar to those shown by thermal-mechanical FEA and experiments. It can be concluded that the constraining force acting on the substrate is a major contributory factor towards the distortion mechanism. The constraining force seems to be primarily related to the material properties, temperature, and cross-sectional area of the added layer.
- Published
- 2018
- Full Text
- View/download PDF
30. Lexicographic Ranking Supermartingales with Lazy Lower Bounds.
- Author
-
Toru Takisaka, Libo Zhang 0006, Changjiang Wang, and Jiamou Liu
- Published
- 2024
- Full Text
- View/download PDF
31. Analysis of Heat Transfer and Thermal Environment in a Rural Residential Building for Addressing Energy Poverty
- Author
-
Yiyun Zhu, Xiaona Fan, Changjiang Wang, and Guochen Sang
- Subjects
rural residential building ,solar energy ,heat transfer ,wind velocities ,field test and numerical simulation ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
Reducing energy consumption and creating a comfortable thermal indoor environment in rural residential buildings can play a key role in fighting global warming in China. As a result of economic development, rural residents are building new houses and modernizing existing buildings. This paper investigated and analyzed a typical rural residential building in the Ningxia Hui Autonomous Region in Northwest China through field measurements and numerical simulation. The results showed that making full use of solar energy resources is an important way to improve the indoor temperature. Reasonable building layout and good thermal performance of the building envelope can reduce wind velocities and convective heat loss. Insulation materials and double-glazed windows should be used to reduce energy loss in new buildings, although it is an evolution process in creating thermally efficient buildings in rural China. This research provides a reference for the design and construction of rural residential buildings in Northwest China and similar areas for addressing energy poverty.
- Published
- 2018
- Full Text
- View/download PDF
32. Experimental Studies on the Spraying Pattern of a Swirl Nozzle for Coal Dust Control
- Author
-
Guijun Gao, Changjiang Wang, and Ziming Kou
- Subjects
swirl nozzle ,coal dust collector ,particle SMD ,atomization ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
The experimental and numerical studies were performed to understand the atomization mechanism of pressure spray of a swirl nozzle. The design and performance parameters such as spray cone angle, velocity of particles, spray pressure, and Sauter Mean Diameter (SMD) of the droplets were studied using a laser particle size analyzer and high-speed camera. The results show that the SMD increases at first, then decreases as the spray distance increases, and finally tends to be stable after 1 m. The SMD is largest in the center of the spray field and decreases gradually along the radial direction. The SMD distribution is more concentrated near the nozzle. Increasing spray pressure and deceasing nozzle diameter both can make the SMD distribution more concentrated and uniform. The swirl nozzle has been used in a coal mine and was shown to be very effective in suppressing coal dust compared to other traditional nozzles.
- Published
- 2018
- Full Text
- View/download PDF
33. Integration Design and Optimization Control of a Dynamic Vibration Absorber for Electric Wheels with In-Wheel Motor
- Author
-
Mingchun Liu, Feihong Gu, Juhua Huang, Changjiang Wang, and Ming Cao
- Subjects
electric wheel ,in-wheel motor ,dynamic vibration absorber ,integration design ,alterable-domain-based fuzzy control ,particle swarm optimization ,linear quadratic regulator ,Technology - Abstract
This paper presents an integration design scheme and an optimization control strategy for electric wheels to suppress the in-wheel vibration and improve vehicle ride comfort. The in-wheel motor is considered as a dynamic vibration absorber (DVA), which is isolated from the unsprung mass by using a spring and a damper. The proposed DVA system is applicable for both the inner-rotor motor and outer-rotor motor. Parameters of the DVA system are optimized for the typical conditions, by using the particle swarm optimization (PSO) algorithm, to achieve an acceptable vibration performance. Further, the DVA actuator force is controlled by using the alterable-domain-based fuzzy control method, to adaptively suppress the wheel vibration and reduce the wallop acting on the in-wheel motor (IWM) as well. In addition, a suspension actuator force is also controlled, by using the linear quadratic regulator (LQR) method, to enhance the suspension performance and meanwhile improve vehicle ride comfort. Simulation results demonstrate that the proposed DVA system effectively suppresses the wheel vibration and simultaneously reduces the wallop acting on the IWM. Also, the alterable-domain-based fuzzy control method performs better than the conventional ones, and the LQR-based suspension exhibits excellent performance in vehicle ride comfort.
- Published
- 2017
- Full Text
- View/download PDF
34. Associations of CTLA4 Gene Polymorphisms with Graves’ Ophthalmopathy: A Meta-Analysis
- Author
-
Pengfei Du, Xiaojie Ma, and Changjiang Wang
- Subjects
Genetics ,QH426-470 - Abstract
Many studies have established that T-lymphocyte antigen-4 (CTLA4) is a susceptible gene for Graves’ disease (GD). Also many studies showed the association between the CTLA4 exon-1 49A/G polymorphism and the risk of developing Graves’ ophthalmopathy (GO) in GD patients. But those results were inconsistent. In recent years many new studies were published which helped to shed light on the relationship of CTLA4 SNP49 with GO. So we performed the meta-analysis to explore the association between the SNP49 and GO susceptibility in GD patients. Studies up to February 29, 2012, were searched by using PubMed. The odds ratio was used to evaluate the strength of the association. Altogether 12 case-control studies involving 2,505 participants were included in the meta-analysis. Results showed that the G allele was related to the increased risk of GO compared with the A allele under allelic genetic model (OR = 1.14, 95% CI: 1.14–1.72, P=0.001) in European subgroup. No publication bias was detected. Our results showed that the SNP49 polymorphism of CTLA4 gene was related to increased risk of GO.
- Published
- 2014
- Full Text
- View/download PDF
35. Chain of Stance: Stance Detection with Large Language Models.
- Author
-
Junxia Ma, Changjiang Wang, Hanwen Xing, Dongming Zhao, and Yazhou Zhang
- Published
- 2024
- Full Text
- View/download PDF
36. Fairness in Ranking Supermartingales.
- Author
-
Toru Takisaka, Libo Zhang 0006, Changjiang Wang, and Jiamou Liu
- Published
- 2023
- Full Text
- View/download PDF
37. Transient Stability Assessment of Power System Based on Enhanced Projection Twin SVM.
- Author
-
Changjiang Wang, Shuguang Li, Chuqiao Lin, and Houhe Chen
- Published
- 2021
- Full Text
- View/download PDF
38. Intelligent geometry compensation for additive manufactured oral maxillary stent by genetic algorithm and backpropagation network.
- Author
-
Zifan Zhang, Deqiao Xie, Fei Lv 0009, Ruikang Liu, Youwen Yang, Lin Wang, Guofeng Wu, Changjiang Wang, Li-Da Shen, and Zongjun Tian
- Published
- 2023
- Full Text
- View/download PDF
39. Design and 3D printing of integrated bionic porous ceramic maxillofacial prosthesis
- Author
-
Haidong Wu, Long Chao, Yingjie Yi, Chen Jiao, Lida Shen, Guofeng Wu, Jianfeng Zhao, Lin Wang, Jiali Meng, Changjiang Wang, and Feng Qiao
- Subjects
Mechanics of Materials ,Mechanical Engineering ,General Materials Science - Published
- 2022
40. Improvement of the three-dimensional fine-mesh flow field of proton exchange membrane fuel cell (PEMFC) using CFD modeling, artificial neural network and genetic algorithm
- Author
-
Zeting Yu, Lei Xia, Guoping Xu, Changjiang Wang, and Daohan Wang
- Subjects
Fuel Technology ,Renewable Energy, Sustainability and the Environment ,Energy Engineering and Power Technology ,Condensed Matter Physics - Published
- 2022
41. Fabrication of a zirconia/calcium silicate composite scaffold based on digital light processing
- Author
-
Zhijing He, Chen Jiao, Hanxu Zhang, Deqiao Xie, Mengxing Ge, Youwen Yang, Guofeng Wu, Huixin Liang, Lida Shen, and Changjiang Wang
- Subjects
Process Chemistry and Technology ,Materials Chemistry ,Ceramics and Composites ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials - Published
- 2022
42. SeMOE allows for quantitative glycan perception and exhibits anti-cancer potentiality
- Author
-
Xiao Tian, Lingna Zheng, Changjiang Wang, Yida Han, Yujie Li, Tongxiao Cui, Jialin Liu, Chuanming Liu, Guogeng Jia, Lujie Yang, Chen Zeng, Lijun Ding, Chu Wang, Bo Cheng, Meng Wang, and Ran Xie
- Abstract
Metabolic oligosaccharide engineering (MOE) is a classical chemical approach to perturb, profile and perceive glycans in physiological systems, but probes upon bioorthogonal reaction require accessibility and background signal readout makes it challenging to achieve absolute glycan quantification. Here we develop SeMOE, a selenosugar-based metabolic oligosaccharide engineering strategy that combines elemental analysis and MOE to enable the absolute quantification and mass spectrometric imaging of glycome in a concise procedure. We demonstrate that SeMOE probes allow for perception, absolute quantification and visualization of glycans in diverse biological contexts. We demonstrate that chemical reporters on conventional MOE can be integrated into a bifunctional SeMOE probe to provide multimodality signal readouts. We further show the anti-cancer potentiality of SeMOE probes. SeMOE thus provides a convenient and simplified method to “see more” of the glyco-world.
- Published
- 2023
43. Forced Oscillation Source Location In Power Systems Using Synchrosqueezing Transform Based Time-Frequency Representation
- Author
-
Tao Jiang, Changjiang Wang, and Nan Ye
- Published
- 2023
44. Pore characteristics and corresponding controlling factors of the marine shale gas reservoir in the Wufeng-Longmaxi Formation of the Zhaotong shale gas demonstration area
- Author
-
Fuqiang Lai, Xiaoxue Xia, Changjiang Wang, Ruyue Wang, Lulu Zhong, Zhaohui Huang, Haitao Wang, and Zhangxiong Zhu
- Subjects
Geophysics ,Geology - Abstract
The shale gas reservoir in the Zhaotong national shale gas demonstration area in the southern margin of the Sichuan Basin is mainly developed in the lower member of the Ordovician Wufeng Formation to the Silurian Longmaxi Formation. Shale pore characteristics are the main indicators for evaluating the quality of shale reservoirs and largely determine shale gas productivity. We have qualitatively and quantitatively analyzed pore types and structures through scanning electron microscopy, CO2/N2 adsorption and high-pressure mercury injection experiments, and nuclear magnetic resonance. The pore types of marine shale gas reservoirs in the study area mainly included organic-matter pores and clay mineral interlamellar pores. The pore diameter of the shale reservoir ranged from 0.5 to 35 nm and was concentrated in the range of 2–10 nm, and the main pores were mesopores. Total organic carbon (TOC) content was positively correlated with fractal dimension, which could be used to quantitatively evaluate the complexity and heterogeneity of reservoir pores. The contents of TOC, clay, and siliceous minerals were the main factors controlling the development of shale micropores. The contents of clay minerals and siliceous minerals determined the storage space of shale gas, whereas micropores and mesopores controlled the adsorption capacity of shale.
- Published
- 2022
45. Corporate Transparency and Externally Financed Firm Growth
- Author
-
Shawn X. Huang, Raynolde Pereira, and Changjiang Wang
- Subjects
Accounting ,Business and International Management - Abstract
Employing a comprehensive measure of country-level corporate transparency, we document a positive relation between corporate transparency and externally financed firm growth. This relation is robust to controlling for variables related to the quality of a country's legal institutions and the overall level of financial development. We also show that the level of external financing in the form of long-term debt is higher among firms in countries with greater corporate transparency. Further cross-sectional tests reveal that the role of corporate transparency in firm growth and external financing is less pronounced among bank-oriented countries as compared to market-oriented countries. In sum, our evidence highlights the positive impact of corporate transparency on economic growth through its impact on firm access to low-cost external financing.
- Published
- 2022
46. Surface hydroxylation of TiO2/g-C3N4 photocatalyst for photo-Fenton degradation of tetracycline
- Author
-
Yanhong Li, Changjiang Wang, Xiao Tang, Zhiting Song, Dongshuo Li, Qifeng Zhang, Xianju Zhou, and Yi Lu
- Subjects
Aqueous solution ,Materials science ,Tetracycline ,Process Chemistry and Technology ,Composite number ,Nanoparticle ,Photochemistry ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Hydroxylation ,chemistry.chemical_compound ,Adsorption ,chemistry ,Materials Chemistry ,Ceramics and Composites ,medicine ,Photocatalysis ,Degradation (geology) ,medicine.drug - Abstract
The photocatalytic degradation of tetracycline in aqueous solution is a typical heterogeneous reaction, and thus the design of efficient photocatalysts for tetracycline degradation should revolve the process features of heterogeneous reaction closely. In the present work, TiO2-P/g-C3N4 composites with abundant surface hydroxyls were prepared by coupled g-C3N4 nanosheets with plasma treated TiO2 (TiO2-P) nanoparticles. The resultant TiO2-P/g-C3N4 as photocatalysts showed higher activity for the degradation of tetracycline in aqueous solution than g-C3N4, TiO2, TiO2-P and TiO2/g-C3N4 under visible light irradiation. The better activity of TiO2-P/g-C3N4 photocatalysts for tetracycline degradation could be ascribed to the good synergy between TiO2-P and g-C3N4. Specifically, due to the presence of surface hydroxyls on TiO2-P, the tetracycline adsorption activity, electrons-holes separation property as well as H2O2 activating activity of TiO2-P/g-C3N4 during tetracycline degradation were improved. By integrating the property of g-C3N4 photocatalyst in H2O2 production, as well as the property of TiO2-P in activating H2O2 into •OH and •O2-, efficient photo-Fenton degradation of tetracycline was achieved in the TiO2-P/g-C3N4 photocatalytic system. Our study on TiO2/g-C3N4 composite photocatalyst provides helpful inspiration to design photocatalysts with high-activity for the photo-Fenton degradation of organic pollutants.
- Published
- 2022
47. Zn-doped chitosan/alginate multilayer coatings on porous hydroxyapatite scaffold with osteogenic and antibacterial properties
- Author
-
Zhijing He, Chen Jiao, Junnan Wu, Jiasen Gu, Huixin Liang, Lida Shen, Youwen Yang, Zongjun Tian, Changjiang Wang, and Qing Jiang
- Subjects
Materials Science (miscellaneous) ,Industrial and Manufacturing Engineering ,Biotechnology - Abstract
Porous hydroxyapatite (HA) scaffolds prepared by three-dimensional (3D) printing have wide application prospects owing to personalized structural design and excellent biocompatibility. However, the lack of antimicrobial properties limits its widespread use. In this study, a porous ceramic scaffold was fabricated by digital light processing (DLP) method. The multilayer chitosan/alginate composite coatings prepared by layer-by-layer method were applied to scaffolds and Zn2+ was doped into coatings in the form of ion crosslinking. The chemical composition and morphology of coatings were characterized by scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). Energy dispersive spectroscopy (EDS) analysis demonstrated that Zn2+ was uniformly distributed in the coating. Besides, the compressive strength of coated scaffolds (11.52 ± 0.3 MPa) was slightly improved compared with that of bare scaffolds (10.42 ± 0.56 MPa). The result of soaking experiment indicated that coated scaffolds exhibited delayed degradation. In vitro experiments demonstrated that within the limits of concentration, a higher Zn content in the coating has a stronger capacity to promote cell adhesion, proliferation and differentiation. Although excessive release of Zn2+ led to cytotoxicity, it presented a stronger antibacterial effect against Escherichia coli (99.4%) and Staphylococcus aureus (93%).
- Published
- 2023
48. Static Voltage Stability Evaluation of Large-Scale Renewable Energy Power System Based on Convolutional Neural Network
- Author
-
Xiaozhe Song, Jian Cui, Xin Liu, Fushou Sun, and Changjiang Wang
- Published
- 2023
49. Current Sharing of Parallel IGBT Affected by Thermal Resistance
- Author
-
Weifeng Tang and Changjiang Wang
- Published
- 2023
50. The Control Method of Power Support for the Sending Power Grid with Large-Scale Wind Power via HVDC Transmission
- Author
-
Binshuo Yu, Haotian Yu, Xiaozhe Song, Changjiang Wang, and Xianchao Liu
- Published
- 2023
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