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Calibration of grayscale values of cement constituents using industrial X-ray tomography

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Science China(Technological Sciences) 2015年第3期58卷 485-492页

作者： WAN KeShu CHEN LingYan xu qiong Jiangsu Key Laboratory of Construction Materials School of Materials Science and Engineering Southeast University

X-ray computer tomography(CT)has been intensively applied to the research of cement-based materials,while most of the CT applications are *** have more quantitative applications,the arbitrary grayscale values and the specially defined CT numbers of the main cement constituents,including the cement clinkers,the hydrated products,and some durability products are calibrated on an industrial CT system in this *** calibration results can deepen our understandings of the X-ray CT image of the cement-based *** universalities of the calibrated results and the calibration procedures are *** potential applications are anticipated,such as segmentation of the individual phases,quantitative durability research,porosity determinations,and quantitative composition characterizations.

关键词： computer tomography cement calibration

Characterization of astrocytes and microglial cells in the hippocampal CA1 region after transient focal cerebral ischemia in rats treated with Ilexonin A

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Neural Regeneration Research 2020年第1期15卷 78-85页

作者： Ai-Ling xu Guan-Yi Zheng Hui-Ying Ye xiao-Dong Chen qiong Jiang Department of Traditional Chinese Medicine Fujian Medical University Union HospitalFuzhouFujian ProvinceChina Department of Neonatology People’s Hospital Affiliated to Fujian University of Traditional Chinese MedicineFuzhouFujian ProvinceChina Department of Neurology People’s Hospital of NanpingNanpingFujian ProvinceChina Burns Institute of Fujian Medical University Union Hospital FuzhouFujian ProvinceChina

Ilexonin A is a compound isolated from the root of Ilex pubescens,a traditional Chinese *** A has been shown to play a neuroprotective role by regulating the activation of astrocytes and microglia in the peri-infarct area after ***,the effects of ilexonin A on astrocytes and microglia in the infarct-free region of the hippocampal CA1 region remain *** cerebral ischemia models were established by 2-hour occlusion of the middle cerebral artery in *** A(20,40 or 80 mg/kg)was administered immediately after ischemia/*** astrocyte marker glial fibrillary acidic protein,microglia marker Iba-1,neural stem cell marker nestin and inflammation markers were detected by immunohistochemistry and western blot *** levels of tumor necrosis factor-αand interleukin 1βwere determined by enzyme linked immunosorbent assay in the hippocampal CA1 *** were activated immediately in progressively increasing numbers from 1,3,to 7 days post-ischemia/*** number of activated astrocytes further increased in the hippocampal CA1 region after treatment with ilexonin *** cells remained quiescent after ischemia/reperfusion,but became activated after treatment with ilexonin *** A enhanced nestin expression and reduced the expression of tumor necrosis factor-αand interleukin 1βin the hippocampus post-ischemia/*** results of the present study suggest that ilexonin A has a neuroprotective effect in the hippocampus after ischemia/reperfusion,probably through regulating astrocytes and microglia activation,promoting neuronal stem cell proliferation and reducing the levels of pro-inflammatory *** study was approved by the Animal Ethics Committee of the Fujian Medical University Union Hospital,China.

关键词： astrocytes hippocampal CA1 region ilexonin A microglia middle cerebral artery occlusion neural stem cell neuroprotection transient focal cerebral ischemia

Values of a novel pyroptosis-related genetic signature in predicting outcome and immune status of pancreatic ductal adenocarcinoma

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Gastroenterology Report 2022年第1期10卷 476-489页

作者： Xiang xu Jia-Hua Liang Jian-Hui Li qiong-Cong xu xiao-Yu Yin Department of Pancreato-Biliary Surgery The First Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdongP.R.China

Background Pyroptosis is an emerging form of programmed cell death associated with progression in ***,there are few studies reporting on the association between pancreatic ductal adenocarcinoma(PDAC)and ***,we aimed to construct a pyroptosis-related genetic signature to predict the clinical outcome and immune status in PDAC *** RNA-seq data of 176 PDAC patients from The Cancer Genome Atlas(TCGA)and 167 PDAC patients from the Genotype-Tissue Expression Project were analysed for pyroptosis-related differentially expressed genes(DEGs)between PDAC and normal *** risk signature of DEGs was analysed using the least absolute shrinkage and selection operator(LASSO)Cox regression analysis and its accuracy was validated in the Gene Expression Omnibus(GEO)cohort(n=190).Functional enrichment analyses were performed to explore the mechanisms of the *** immune characteristics were evaluated using single-sample gene set enrichment analysis and ESTIMATE algorithms for each *** A nine-gene risk signature was generated from LASSO Cox regression analysis and classified PDAC patients into either a high-or low-risk group according to the median risk *** high-risk group had significantly shorter overall survival than the low-risk group and it was verified in the external GEO database.A nomogrambased on the risk signature was constructed and showed an ideal prediction *** enrichment analyses revealed that pyroptosis might regulate the tumor immune microenvironment in *** infiltration evaluation suggested that immune status was more activated in the low-risk group than in the high-risk *** The risk signature encompassing nine pyroptosis-related genes may be a prognostic marker for *** might affect the prognosis of PDAC patients via regulating the tumor immune microenvironment.

关键词： pancreatic ductal adenocarcinoma pyroptosis prognosis immune

Application of MnCeO_(x)supported on palygorskite and Al(OH)_(3)for HCHO oxidation:Catalytic performance and stability

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Journal of Rare Earths 2022年第12期40卷 1860-1869,I0002页

作者： qiong Huang Lirui xu Yao xiao Jie Zhu Guofang An Peiyang Li Bo Yang Mindong Chen Hong Yang Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies Jiangsu Key Laboratory of Atmospheric Environmental Monitoring&Pollution ControlSchool of Environmental Science&EngineeringNanjing University of Information Science&TechnologyNanjing 210044China Department of Geography and Environmental Science University of ReadingWhiteknightsReadingRG66ABUK

Indoor formaldehyde(HCHO)is an important air pollutant,while it is very difficult to reduce HCHO to low-level(e.g.<0.08 mg/m^(3)).Catalytic oxidation at ambient temperature has been increasingly recognized as one of the important methods to mitigate HCHO pollution due to its good effectiveness,stability,and *** further improve the activity of catalytic oxidation,this study develops the integrated MnCeO_(x)catalysts supported on palygorskite(Pal)and aluminium hydroxide(Al(OH)_(3)).Our results indicate that the synergistic interaction in MnCeO_(x)through the oxygen transfer mechanism from the oxygen reservoir CeO_(2)to MnOxsignificantly improves the ***,Al(OH)_(3),*** applied as the supports with a focus on their dispersion,microstructure,strength,and relative ***_(x)can be anchored on the surface of Al(OH)_(3)with high *** the integrated catalyst,HCHO concentration decreases from 1.012 to 0.086 mg/m^(3)within 48 *** oxidation activity of MnCeO_(x)powder may be ascribed to the amount of active components on the *** incorporation of ZSM-5 and activated carbon can improve the adsorption of HCHO,and all integrated catalysts exhibit stronger activities,with HCHO being degraded to the level lower than 0.08 mg/m^(3).Meantime,the samples exhibit good stability and strength(20.2 MPa)without obvious decrease over five consecutive stability experiments.

关键词： MnCeOx Integrated catalysts Catalytic oxidation HCHO Ambient temperature Rare earths

Semi-Global Depth Estimation Algorithm for Mobile 3-D Video Applications

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Tsinghua Science and Technology 2012年第2期17卷 128-135页

作者： qiong Liu Hongjiang xiao Department of Automation Tsinghua UniversityBeijing 100084China Department of Electronics and Information Engineering Huazhong University of Science and TechnologyWuhan 430074China Academy of Broadcasting Planning SARFT Beijing 100866China

Three-dimensional （3-D） video applications, such as 3-D cinema, 3DTV, ana Free Viewpomt Video （FVV） are attracting more attention both from the industry and in the literature. High accuracy of depth video is a fundamental prerequisite for most 3-D applications. However, accurate depth requires computationally intensive global optimization. This high computational complexity is one of the bottlenecks to applying depth generation to 3-D applications, especially for mobile networks since mobile terminals usually have limited computing ability. This paper presents a semi-global depth estimation algorithm based on temporal consis- tency, where the depth propagation is used to generate initial depth values for the computationally intensive global optimization. The accuracy of initial depth is improved by detecting and eliminating the depth propagation outliers before the global optimization. Integrating the initial values without outliers into the global optimization reduces the computational complexity while maintaining the depth accuracy. Tests demonstrate that the algorithm reduces the total computational time by 54%-65% while the quality of the virtual views is essentially equivalent to the benchmark.

关键词： 3-D video depth estimation temporal propagation graph cuts

αDecay in extreme laser fields within a deformed Gamow-like model

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Nuclear Science and Techniques 2024年第2期35卷 131-144页

作者： qiong xiao Jun-Hao Cheng Yang-Yang xu You-Tian Zou Jun-Gang Deng Tong-Pu Yu Department of Physics National University of Defense TechnologyChangsha 410073China College of Science China Three Gorges UniversityYichang 443002China

In this study, the effect of extreme laser fields on the α decay process of ground-state even–even nuclei was *** the deformed Gamow-like model, we found that state-of-the-art lasers can cause a slight change in the α decay penetration probability of most nuclei. In addition, we studied the correlation between the rate of change of the α decay penetration probability and angle between the directions of the laser electric field and α particle emission for different nuclei. Based on this correlation, the average effect of extreme laser fields on the half-life of many nuclei with arbitrary α particle emission angles was calculated. The calculations show that the laser suppression and promotion effects on the α decay penetration probability of the nuclei population with completely random α particle-emission directions are not completely *** remainder led to a change in the average penetration probability of the nuclei. Furthermore, the possibility of achieving a higher average rate of change by altering the spatial shape of the laser is explored. We conclude that circularly polarized lasers may be helpful in future experiments to achieve a more significant average rate of change of the α decay half-life of the nuclei population.

关键词： αDecay Deformed Gamow-like model Half-lives Extreme laser field Penetration probability

Orbitronics for energy-efficient magnetization switching

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Science China(Information Sciences) 2025年第1期 398-399页

作者： Yuxuan YAO Daoqian ZHU Qingtao XIA Jianing LIANG Yuhao JIANG Zhiyang PENG Jiaxu LI Chen xiao Renyou xu Wenwen WANG Xiantao SHANG Shiyang LU Dapeng ZHU Hong-Xi LIU Kaihua CAO Weisheng ZHAO Fert Beijing Institute School of Integrated Circuit Science and Engineering Beihang University National Key Lab of Spintronics Institute of International Innovation Beihang University Qingdao Research Institute Beihang University Truth Memory Corporation

Spin-orbit torque （SOT）,as a promising writing method for magnetic random-access memory （MRAM）,has garnered widespread interest for over a decade [1].Heavy metals,such as β-W,have been broadly adopted as spin current sources,but suffer from phase change at a limited thickness,resulting in a dramatic reduction of the charge-tospin conversion efficiency θSH[2].The thickness limitation leads to stringent etching conditions and large distribution among devices,posing challenges for simultaneously satisfying SOT efficiency,etching-stop margins,and back-end-ofline （BEOL） compatibility.

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Removable Edges in a 5-Connected Graph

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Journal of Mathematical Research and Exposition 2011年第4期31卷 617-626页

作者： Li qiong xu xiao Feng GUO School of Sciences Jimei University Fujian 361023 P. R. China School of Mathematics Sciences Xiamen University Fujian 361005 P. R. China

An edge e of a k-connected graph G is said to be a removable edge if G O e is still k-connected, where G e denotes the graph obtained from G by deleting e to get G - e, and for any end vertex of e with degree k - 1 in G- e, say x, delete x, and then add edges between any pair of non-adjacent vertices in NG-e （x）. The existence of removable edges of k-connected graphs and some properties of 3-connected and 4-connected graphs have been investigated [1, 11, 14, 15]. In the present paper, we investigate some properties of 5-connected graphs and study the distribution of removable edges on a cycle and a spanning tree in a 5- connected graph. Based on the properties, we proved that for a 5-connected graph G of order at least 10, if the edge-vertex-atom of G contains at least three vertices, then G has at least （3│G│ ＋ 2）/2 removable edges.

关键词： 5-connected graph removable edge edge-vertex-atom.

Comprehensive mutation screening for 10 genes in Chinese patients suffering very early onset inflammatory bowel disease

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World Journal of Gastroenterology 2016年第24期22卷 5578-5588页

作者： Yuan xiao Xin-qiong Wang Yi Yu Yan Guo xu xu Ling Gong Tong Zhou xiao-Qin Li Chun-Di xu Pediatric Department Ruijin Hospital and Ruijin Hospital North Shanghai Jiao Tong University School of Medicine Gastroenterology Department Zhengzhou Children’s Hospital

AIM: To perform sequencing analysis in patients with very early-onset inflammatory bowel disease (VEO-IBD) to determine the genetic basis for VEO-IBD in Chinese pediatric patients. METHODS: A total of 13 Chinese pediatric patients with VEO-IBD were diagnosed from May 2012 and August 2014. The relevant clinical characteristics of these patients were analyzed. Then DNA in the peripheral blood from patients was extracted. Next generation sequencing (NGS) based on an Illumina-Miseq platform was used to analyze the exons in the coding regions of 10 candidate genes: IL-10, IL-10RA, IL-10RB, NOD2, FUT2, IL23R, GPR35, GPR65, TNFSF15, and ADAM30. The Sanger sequencing was used to verify the variations detected in NGS. RESULTS: Out of the 13 pediatric patients, ten were diagnosed with Crohn's disease, and three diagnosed with ulcerative colitis. Mutations in IL-10RA and IL-10RB were detected in five patients. There were four patients who had single nucleotide polymorphisms associated with IBD. Two patients had IL-10RA and FUT2 polymorphisms, and two patients had IL-10RB and FUT2 polymorphisms. Gene variations were not found in the rest four patients. Children with mutations had lower percentile body weight ( 1.0% vs 27.5%, P = 0.002) and hemoglobin ( 87.4 g/L vs 108.5 g/L, P = 0.040) when compared with children without mutations. Although the age of onset was earlier, height was shorter, and the response to treatment was poorer in the mutation group, there was no significant difference in these factors between groups. CONCLUSION: IL-10RA and IL-10RB mutations are common in Chinese children with VEO-IBD. Patients with mutations have an earlier disease onset, lower body weight and hemoglobin, and poorer

关键词： Pediatric inflammatory bowel disease Very early-onset inflammatory bowel disease Interleukin 10 receptor NOD2 gene FUT2 gene