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Atomic-Scale Insights into Damage Mechanisms of GGr15 Bearing Steel Under Cyclic Shear Fatigue

Acta Metallurgica Sinica(English Letters) 2024年第7期37卷 1265-1278页

作者： Qiao-Sheng Xia Dong-Peng Hua Qing Zhou Ye-Ran Shi xiang-Tao Deng Kai-ju Lu Hai-Feng wang Xiu-Bing Liang Zhao-Dong wang State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi’an710072China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang110819China Defense Innovation Institute Academy of Military ScienceBeijing100071China

Alternating shear stress is a critical factor in the accumulation of damage during rolling contact fatigue,severely limiting the service life of ***,the specific mechanisms responsible for the cyclic shear fatigue damage in bearing steel have not been fully *** the mechanical response and microstructural evolution of a model GGr15 bearing steel under cyclic shear loading are investigated through the implementation of molecular dynamics *** samples undergo 30 cycles under three different loading conditions with strains of 6.2%,9.2%,and 12.2%,*** findings indicate that severe cyclic shear deformation results in early cyclic softening and significant accumulation of plastic damage in the bearing ***,samples subjected to higher strain-controlled loading exhibit higher plastic strain energy and shorter fatigue ***,strain localization is identified as the predominant damage mechanism in cyclic shear fatigue of the bearing steel,which accumulates and ultimately results in fatigue ***,simulation results also revealed the microstructural reasons for the strain localization(e.g.,BCC phase transformation into FCC and HCP phase),which well explained the formation of white etching *** study provides fresh atomic-scale insights into the mechanisms of cyclic shear fatigue damage in bearing steels.

关键词： Cyclic shear fatigue Molecular dynamic simulation Bearing steels Plastic damage accumulation

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Correlation of survivin,p53 and Ki-67 in laryngeal cancer Hep-2 cell proliferation and invasion

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Asian Pacific Journal of Tropical Medicine 2015年第8期8卷 626-631页

作者： Shi-Geng Pei ju-xiang wang Xue-Ling wang Qing-jun Zhang Hong Zhang Department of Otolaryngology Head and Neck Surgery Affiliated Hospital of Hebei Engineering University Hebei Engineering University Medical College

Objective: To investigate the mechanism of survivin, p53 and Ki-67 on Hep-2 human laryngeal cancer endothelial cell proliferation and invasion. Methods: Laryngeal squamous cell carcinoma and paracancerous normal tissues were collected, total RNA was extracted from tissues, survivin, p53 and Ki-67 gene m RNA expression levels in laryngeal cancer and the adjacent tissues were detected by Real-time PCR. Human laryngeal cancer Hep-2 epithelial cells were selected, survivin gene was overexpressed, and cell proliferation was detected by MTT. p53 and Ki-67 gene expression changes in overexpressed survivin gene were detected by Western blot. Changes in Hep-2 cell invasive ability were studied when survivin was overexpressed as detected by Transwell invasion assay. Results: In the adjacent tissues, survivin, p53 and Ki-67 gene relative expression levels were 1.72 ± 0.9, 13.7 ± 5.7 and 5.7 ± 1.3, respectively; while in cancer tissues, gene relative expression levels were 53.7 ± 8.3, 66.7 ± 5.2 and 61.0 ± 3.1, respectively, which was significantly increased. As detected by MTT, relative cell survival rate within 12 h of survivin overexpression were: load control group,(88.5±1.6)%; overexpressed group,(90.3±1.9)%. Transwell invasion assay results indicated that overexpressed survivin could significantly increase the relative survival rate of cells. Conclusions: Expressions of p53, Ki67 and survivin are increased in cancer; and there is a positive correlation between survivin, p53 and Ki67 expressions in laryngeal carcinoma.

关键词： Survivin p53 Ki67 Hep-2 Transwell laryngeal cancer

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Exploring cerebral structural and functional abnormalities in a mouse model of post-traumatic headache induced by mild traumatic brain injury

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Zoological Research 2024年第3期45卷 648-662页

作者： Dan Yang Bin-Bin Nie Jin-Gang He Zong-Qiang Lv Feng-Feng Mo Si-Yi Ouyang Jie wang ju-xiang Chen Tao Tao Department of Anesthesiology Central People’s Hospital of ZhanjiangZhanjiangGuangdong 524045China Key Laboratory of Nuclear Radiation and Nuclear Energy Technology Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Key Laboratory of Magnetic Resonance in Biological Systems State Key Laboratory of Magnetic Resonance and Atomic and Molecular PhysicsNational Center for Magnetic Resonance in WuhanWuhan Institute of Physics and MathematicsInnovation Academy for Precision Measurement Science and TechnologyChinese Academy of Sciences-Wuhan National Laboratory for OptoelectronicsWuhanHubei 430071China Department of Neurosurgery Changhai HospitalNaval Medical UniversityShanghai 200082China Department of Nutrition and Food Hygiene Faculty of Naval MedicineNaval Medical UniversityShanghai 200433China Department of Anesthesiology Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515China Institute of Neuroscience and Brain Diseases/xiangyang Central Hospital Affiliated Hospital of Hubei University of Arts and ScienceXiangyangHubei 441021China Songjiang Hospital and Songjiang Research Institute Shanghai Jiao Tong University School of MedicineShanghai 201600China Department of Anesthesiology Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515China

Mild traumatic brain injury(mTBI)-induced post-traumatic headache(PTH)is a pressing public health concern and leading cause of disability *** PTH is often accompanied by neurological disorders,the exact underlying mechanism remains largely *** potential biomarkers may prompt the diagnosis and development of effective treatments for mTBI-induced *** this study,a mouse model of mTBI-induced PTH was established to investigate its effects on cerebral structure and function during short-term *** indicated that mice with mTBI-induced PTH exhibited balance deficits during the early post-injury *** kinetics revealed that variations in neurotransmitters were most prominent in the cerebellum,temporal lobe/cortex,and hippocampal regions during the early stages of ***,variations in brain functional activities and connectivity were further detected in the early stage of PTH,particularly in the cerebellum and temporal cortex,suggesting that these regions play central roles in the mechanism underlying ***,our results suggested that GABA and glutamate may serve as potential diagnostic or prognostic biomarkers for *** studies should explore the specific neural circuits involved in the regulation of PTH by the cerebellum and temporal cortex,with these two regions potentially utilized as targets for non-invasive stimulation in future clinical treatment.

关键词： Post-traumatic headache(PTH) Mild traumatic brain injury(mTBI) Metabolic kinetics fMRI Cerebellum

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Effect and mechanism of miR-34a on proliferation, apoptosis and invasion of laryngeal carcinoma cells

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Asian Pacific Journal of Tropical Medicine 2016年第5期9卷 480-484页

作者： ju-xiang wang Qing-jun Zhang Shi-Geng Pei Bao-Liang Yang Affiliated Hospital of Hebei University of Engineering

Objective: To discuss the effect and mechanism of miR-34 a on the proliferation, apoptosis and invasion of laryngeal carcinoma cells. Methods: The laryngeal squamous carcinoma Hep2 cells were transiently transfected with miR-34 a mimics and miR-34 a NC. The MTT, colony-forming assay, Hoechst staining and Annexin V-PI double staining flow cytometry were employed to detect the effect of miR-34 a on the viability and apoptosis of laryngeal squamous carcinoma Hep2 cells; Transwell assay to defect the effect of miR-34 a on the migration and invasion of laryngeal squamous carcinoma Hep2 cells; western blot and RTPCR assay to defect the effect of miR-34 a mimics on the expression of survivin and Ki-67 m RNA in laryngeal squamous carcinoma Hep2 cells. Results: Compared with miR-34 a NC group, the cell viability in miR-34 mimics group was significantly decreased(P<0.01), the cell apoptosis rate was significantly increased(P<0.01), the abilities of cell migration and invasion were significantly reduced(P<0.01) and the expression of survivin and Ki-67 m RNA was significantly decreased(P<0.01). Conclusions: The increased expression of miR-34 a can induce the apoptosis of Hep2 laryngeal carcinoma cells and inhibit the cell proliferation and invasion, which is related to the down-regulated expression of survivin and Ki-67.

关键词： Mi R-34a Laryngeal squamous carcinoma Hep2 cells Proliferation Apoptosis Invasion

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CircZFR promotes colorectal cancer progression via stabilizing BCLAF1 and regulating the miR-3127-5p/RTKN2 axis

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Science China Life Sciences 2024年第09期 1881-1898页

作者： Jiaxin Chen Huijuan wang Jianbin Xu Engeng Chen Qing Meng Jiawei wang Haoyi xiang Wei Zhou Ge Shan Zhenyu ju Zhangfa Song Department of Colorectal Surgery Sir Run Run Shaw Hospital Zhejiang University School of Medicine Key Laboratory of Biological Treatment of Zhejiang Province Department of Breast Surgery the Second Affiliated Hospital Zhejiang University School of Medicine Department of Orthopedic Surgery the Second Affiliated Hospital Zhejiang University School of Medicine Department of Pulmonary and Critical Care Medicine Regional medical center for National Institute of Respiratory Disease Sir Run Run Shaw Hospital Zhejiang University School of Medicine Key Laboratory of Regenerative Medicine of Ministry of Education Institute of Aging and Regenerative Medicine Jinan University

Aberrant expression of circular RNAs(circ RNAs) is frequently linked to colorectal cancer(CRC). Here, we identified circ ZFR as a promising biomarker for CRC diagnosis and prognosis. Circ ZFR was upregulated in CRC tissues and serum exosomes and its level was linked to cancer incidence, advanced-stages, and metastasis. In both in vitro and in vivo settings, circ ZFR promoted the growth and spread while suppressing apoptosis of CRC. Exosomes with circ ZFR overexpression promoted the proliferation and migration of cocultured CRC cells. Mechanistically,epithelial splicing regulatory protein 1(ESRP1) in CRC cells may enhance the production of circ ZFR. BCL2-associated transcription factor 1(BCLAF1) bound to circ ZFR, which prevented its ubiquitinated degradation. Additionally, circ ZFR sponged mi R-3127-5p to boost rhotekin 2(RTKN2) expression. Our TCP1-CD-QDs nanocarrier was able to carry and deliver circ ZFR si RNA(si-circ ZFR) to the vasculature of CRC tissues and cells, which inhibited the growth of tumors in patient-derived xenograft(PDX) models. Taken together, our results show that circ ZFR is an oncogenic circ RNA, which promotes the development and spread of CRC in a BCLAF1 and mi R-3127-5p-dependent *** ZFR is a possible serum biopsy marker for the diagnosis and a desirable target for further treatment of CRC.

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Different responses of soil fauna gut and plant rhizosphere microbiomes to manure applications

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Soil Ecology Letters 2024年第2期6卷 57-69页

作者： Shuai Du xiang Zhao Yue Zhang Changlong Shu ju-Pei Shen Key Laboratory of Urban Environment and Health Ningbo Urban Environment Observation and Research StationInstitute of Urban EnvironmentChinese Academy of SciencesXiamen361021China School of Geographical Sciences Fujian Normal UniversityFuzhou350007China Institute of Plant Nutrition Resources and EnvironmentBeijing Academy of Agriculture and Forestry SciencesBeijing100097China State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing100193China Hebei Key Laboratory of Soil Entomology Cangzhou Academy of Agricultural and Forestry SciencesCangzhou061001China

Microbial attributes were compared between soil fauna gut and plant rhizosphere.•Manure applications decreased or increased gut or rhizosphere bacterial diversity.•Stochastic or deterministic processes drove gut or rhizosphere bacterial assembly.•Manure applications increased bacterial network complexity of gut and *** microbes inhabit animals and plants,helping their hosts perform multiple functions in agricultural ***,the responses of soil fauna gut and plant rhizosphere microbiomes to livestock manure applications are still not well *** we fed Protaetia brevitarsis larvae(PBL)with chicken manure and collected their *** frass and manure were applied as fertilizers to lettuce *** then compared the changes of microbial diversity,community assembly,and potential functions between the gut group(i.e.,all PBL gut and frass samples)and the rhizosphere group(i.e.,all rhizosphere soil samples).We revealed that manure applications(i.e.,feeding or fertilization)decreased bacterial diversity in the gut group but increased that in the rhizosphere ***,the proportions of Bacilli in the gut group and Gammaproteobacteria in the rhizosphere group were increased(up to a maximum of 33.8%and 20.4%,respectively)after manure *** and deterministic processes dominated community assembly in the gut and rhizosphere microbiomes,*** applications increased the microbial co-occurrence network complexity of both the gut and rhizosphere ***,the proportions of functional taxa associated with human/animal pathogens in the gut group and carbon/nitrogen cycling in the rhizosphere group were enhanced(up to 2.6-fold and 24.6-fold,respectively).Our findings illustrate the different responses of microbial diversity,community assembly,and potential functions in soil fauna gut and plant rhizosphere to manure *** results could enhance our knowledge on the reasonable utilization of

关键词： soil fauna gut plant rhizosphere manure applications community assembly microbial functions

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Global status and trends of metabolomics in diabetes: A literature visualization knowledge graph study

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World Journal of Diabetes 2024年第5期15卷 1021-1044页

作者： Hong Li Liu Li Qiu-Qing Huang Si-Yao Yang jun-ju Zou Fan Xiao Qin xiang Xiu Liu Rong Yu College of Chinese Medicine Hunan University of Chinese MedicineChangsha 410208Hunan ProvinceChina College of International Education Hunan University of Chinese MedicineChangsha 410208Hunan ProvinceChina Department of Science and Technology Hunan University of Chinese MedicineChangsha 410208Hunan ProvinceChina Hunan Key Laboratory of TCM Prescription and Syndromes Translational Medicine Hunan University of Chinese MedicineChangsha 410208Hunan ProvinceChina College of Graduate Hunan University of Chinese MedicineHunan ChangshaHunan ProvinceChina

BACKGROUND Diabetes is a metabolic disease characterized by hyperglycemia,which has increased the global medical burden and is also the main cause of death in most *** To understand the knowledge structure of global development status,research focus,and future trend of the relationship between diabetes and metabolomics in the past 20 *** The articles about the relationship between diabetes and metabolomics in the Web of Science Core Collection were retrieved from 2002 to October 23,2023,and the relevant information was analyzed using CiteSpace6.2.2R(CiteSpace),VOSviewer6.1.18(VOSviewer),and Bibliometrix software under R *** A total of 3123 publications were included from 2002 to *** the past two decades,the number of publications and citations in this field has continued to *** United States,China,Germany,the United Kingdom,and other relevant funds,institutions,and authors have significantly contributed to this *** Reports and PLoS One are the journals with the most publications and the most *** keyword co-occurrence and cluster analysis,the closely related keywords are"insulin resistance","risk","obesity","oxidative stress","metabolomics","metabolites"and"biomarkers".Keyword clustering included cardiovascular disease,gut microbiota,metabonomics,diabetic nephropathy,molecular docking,gestational diabetes mellitus,oxidative stress,and insulin *** detection analysis of keyword depicted that"Gene","microbiota","validation","kidney disease","antioxidant activity","untargeted metabolomics","management",and"accumulation"are knowledge frontiers in recent *** The relationship between metabolomics and diabetes is receiving extensive *** nephropathy,diabetic cardiovascular disease,and kidney disease are key diseases for future research in this *** microbiota,molecular docking,and untargeted metabolomics are key research directions in the *** a

关键词： Diabetes Metabolomics Bibliometric CiteSpace VOSviewer

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Efficacy of graphene nanocomposites for air disinfection in dental clinics: A randomized controlled study

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World Journal of Clinical Cases 2024年第28期12卷 6173-6179页

作者： Ya-Qiong ju xiang-Hua Yu Jing Wu Ying-Hui Hu xiang-Yong Han Dan Fang Department of Nursing Minhang District Dental ClinicShanghai 201107China Department of Medical Sciences Minhang District Dental ClinicShanghai 201107China Department of Orthopedics Center for Spinal Minimally Invasive ResearchShanghai Jiao Tong UniversityShanghai 201107China

BACKGROUND Aerosols containing disease-causing microorganisms are produced during oral diagnosis and treatment can cause secondary *** To investigate the use of graphene material for air disinfection in dental clinics by leveraging its adsorption and antibacterial *** Patients who received ultrasonic cleaning at our hospital from April 2023 to April *** were randomly assigned to three groups(n=20 each):Graphene nanocomposite material suction group(Group A),ordinary filter suction group(Group B),and no air suction device group(Group C).The air quality and air colony count in the clinic rooms were assessed before,during,and after the ***,bacterial colony counts were obtained from the air outlets of the suction devices and the filter screens in Groups A and *** Before ultrasonic cleaning,no significant differences in air quality PM2.5 and colony counts were observed among the three ***,significant differences in air quality PM2.5 and colony counts were noted among the three groups during ultrasonic cleaning and after ultrasonic ***,the number of colonies on the exhaust port of the suction device and the surface of the filter were significantly lower in Group A than in Group B(P=0.000 and P=0.000,respectively).CONCLUSION Graphene nanocomposites can effectively sterilize the air in dental clinics by exerting their antimicrobial effects and may be used to reduce secondary pollution.

关键词： Graphene Nanocomposites Oral clinic Air disinfection Secondary contamination

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论“第二个结合”开启的文明视野与文艺的文明维度

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中央民族大学学报（哲学社会科学版） 2024年第1期51卷 36-48页

作者：向云驹中国文艺评论家协会北京100083

习近平总书记在文化传承发展座谈会上的讲话中系统而深刻地阐述了一种中国式的新型文明观。其中,“第二个结合”的论述为我们开启了文明的视野。打开文艺的文明维度是中华优秀传统文化创造性转化、创新性发展的重要空间。在文明的发生... 详细信息

习近平总书记在文化传承发展座谈会上的讲话中系统而深刻地阐述了一种中国式的新型文明观。其中,“第二个结合”的论述为我们开启了文明的视野。打开文艺的文明维度是中华优秀传统文化创造性转化、创新性发展的重要空间。在文明的发生时代、轴心时代、全球化现代文明时代和当下又一个文明时代,中华文明都在其中且是唯一未中断的文明。发出全球文明倡议具有深远意义。人类文明具有特定的层次、性质、范畴。文明体有三个立面:历史立面、社会立面、艺术立面。文艺是文明的重要形式和形象。在文明发展的不同阶段都有不同的艺术发生。艺术与文明的关系也显现出若干重要的质的规定性和史的规律性。中华文明的五个突出特性也体现在中国艺术的发展历程中,构成了中国艺术的审美风范,彰显了中华文明的精神特征。以艺通心,更易沟通世界。历史证明,各美其美、美人之美、美美与共,是艺术与文明继续深化关系、拓展关联的必由之路。以艺术形象展示国家形象,通过彰显中华审美风范的艺术感染力,在有形与无形中润物于无声、通情于无形、达理于无言,是新时代中国文艺的历史贡献和文明职责所在。

关键词：中华文明文明史艺术与文明艺术的文明规律中华审美风范

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A multicenter prospective study on the management of hepatoblastoma in children:a report from the Chinese Children's Cancer Group

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World Journal of Pediatrics 2024年第6期20卷 590-601页

作者： Meng-Jie Tang Xiao-Li Ma xiang-Ling He Wei-Hua Pan Xiao-Hong Zhang Sha-Yi Jiang ju Gao Fu Lie Wei Yao Song Gu Wei-Ling Zhang Qiang Zhao Shi-Hao Huang Yong-jun Fang Wei Liu Hui-Zhong Niu Chun-Mei wang Li-Rong Sun Hui Gao Yun-Peng Dai Shun-Gen Huang Zhi-Yong Zhong Xi-Ge wang Zhong-Rong Li Liang-Chun Yang Ye-Ming Wu Huan-Min wang Xin Sun Xiao-jun Yuan Department of Pediatric Hematology/Oncology Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineNo.1665Kongjiang RoadYangpu DistrictShanghai 200092China Medical Oncology Department Pediatric Oncology CenterBeijing Children's HospitalCapital Medical UniversityNational Center for Children's HealthBeijing 100045China Department of Hematology/Oncology Children's Medical CenterHunan Provincial People's HospitalThe First Affiliated Hospital of Hunan Normal UniversityChangsha 41005China Department of Pediatric Surgery Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200092China Department of Hematology/Oncology Guangzhou Women and Children's Medical CenterNational Children's Medical Center for South Central RegionGuangzhou 510623China Department of Hematology Shanghai Children's HospitalShanghai Jiao Tong UniversityShanghai 200062China Department of Pediatrics West China Second University HospitalSichuan UniversityChengdu 610041China Department of Hematology/Oncology Qilu Children's Hospital of Shandong UniversityJinan 250022China Department of Pediatric Surgery Children's Hospital of Fudan UniversityShanghai 201102China Department of General Surgery Shanghai Children's Medical Center(National Children's Medical Center-Shanghai)Shanghai Jiao Tong University School of MedicineShanghai 200127China Department of Pediatrics Beijing Tongren HospitalCapital Medical UniversityBeijing 100730China Department of Pediatric Oncology Tianjin Medical University Cancer Institute and HospitalTianjin 300060China Department of Hematology/Oncology Children's Hospital of Nanjing Medical UniversityNanjing 210008China Department of Hematology/Oncology Henan Children's HospitalZhengzhou 450018China Department of Pediatric General Surgery Hebei Children's Hospital of Hebei Medical UniversityShijiazhuang City 050031China Children's Hospital the First Affliated Hospital of Zhengzhou UniversityZhengzhou 450052China Department of Paediatric

Background This study aimed to identify survival risk factors in Chinese children with hepatoblastoma(HB)and assess the effectiveness of the new treatment protocol proposed by the Chinese Children's Cancer Group(CCCG)in *** A multicenter,prospective study that included 399 patients with HB from January 2015 to june 2020 was *** demographics,treatment protocols,and other related information were *** regression models and Kaplan-Meier curve methods were *** The 4-year event-free survival(EFS)and overall survival(OS)were 76.9 and 93.5%,*** 4-year EFS rates for the very-low-risk,low-risk,intermediate-risk,and high-risk groups were 100%,91.6%,81.7%,and 51.0%,*** 4-year 0S was 100%,97.3%,94.4%,and 86.8%,*** regression analysis found that age,tumor rupture(R+),and extrahepatic tumor extension(E+)were independent prognostic factors.A total of 299 patients had complete remission,and 19 *** with declining alpha-fetoprotein(AFP)>75%after the first two cycles of neoadjuvant chemotherapy had a better EFS and OS than those≤75%.Conclusions The survival outcome of HB children has dramatically improved since the implementation of CCCG-HB-2016 ***≥8 years,R+,and E+were independent risk factors for *** with a declining AFP>75%after the first two cycles of neoadjuvant chemotherapy had better EFS and OS.

关键词： Alpha-fetoprotein Hepatoblastoma Multicenter Prospective study Survival

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