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Research on intelligent search-and-secure technology in accelerator hazardous areas based on machine vision

Nuclear Science and Techniques 2024年第4期35卷 96-107页

作者： ying-lin ma Yao Wang Hong-Mei Shi Hui-Jie Zhang School of Traffic and Transportation Beijing Jiaotong UniversityBeijing 100044China School of Mechanical Electronic and Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China

Prompt radiation emitted during accelerator operation poses a significant health risk,necessitating a thorough search and securing of hazardous areas prior to ***,manual sweep methods are ***,the limitations of manual sweeps have become increasingly evident with the implementation of large-scale *** leveraging advancements in machine vision technology,the automatic identification of stranded personnel in controlled areas through camera imagery presents a viable solution for efficient search and *** the criticality of personal safety for stranded individuals,search and security processes must be sufficiently *** ensure comprehensive coverage,180°camera groups were strategically positioned on both sides of the accelerator tunnel to eliminate blind spots within the monitoring *** YOLOV8 network model was modified to enable the detection of small targets,such as hands and feet,as well as larger targets formed by individuals near the ***,the system incorporates a pedestrian recognition model that detects human body parts,and an information fusion strategy is used to integrate the detected head,hands,and feet with the identified pedestrians as a cohesive *** strategy enhanced the capability of the model to identify pedestrians obstructed by equipment,resulting in a notable improvement in the recall ***,recall rates of 0.915 and 0.82were obtained for Datasets 1 and 2,*** there was a slight decrease in accuracy,it aligned with the intended purpose of the search-and-secure software *** tests conducted within an accelerator tunnel demonstrated the effectiveness of this approach in achieving reliable recognition outcomes.

关键词： Search and secure machine vision Camera Human body parts recognition Particle accelerator Hazardous area

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Bilayered Dion–Jacobson lead-iodine hybrid perovskite with aromatic spacer for broadband photodetection

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Chinese Chemical Letters 2025年第02期36卷 586-589页

作者： Dongying Fu lin Pan Yanli ma Yue Zhang Institute of Crystalline materials Shanxi University State Key Laboratory of Quantum Optics and Quantum Optics Devices Shanxi University

Dion-Jacobson （DJ） phase hybrid perovskites have been proven to improve the photovoltaic performance of the devices due to its unique *** present,some DJ hybrid perovskites have been reported and used for photodetection filed,but most of them are based on lead-bromide systems,which is not conducive to construct broadband photodetection devices due to the limitation of intrinsic ***,we constructed a bilayered DJ hybrid perovskite （3AMPY）(EA)Pb2I7(3AMPY2+is 3-（aminomethyl）pyridinium,EA+is ethylammonium) using an aromatic spacer,which exhibit large current on/off ratios of 10～4under 520 and 637 nm *** particular,the single crystal device based on （3AMPY）(EA)Pb2I7shows a distinguished detectivity of 7.4×1012Jones and a high responsivity of 0.89A/W under 637 nm *** finding not only enriches the quantities of DJ hybrid perovskites,but also provides useful assistance for constructing high-performance optoelectronic device in the future.

关键词： Aromatic spacer Broadband photodetection Dion–Jacobson Hybrid perovskite Two-dimensional

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Quantitative principles of dynamic interaction between rock support and surrounding rock in rockburst roadways

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International Journal of Mining Science and Technology 2025年第1期35卷 41-55页

作者： Lianpeng Dai Dingjie Feng Yishan Pan Aiwen Wang ying ma Yonghui Xiao Jianzhuo Zhang Institute of Disaster Rock Mechanics Liaoning UniversityShenyang 110036China School of Environmental Sciences Liaoning UniversityShenyang 110036China CCTEG Tiandi Science&Technology Co. Ltd.Beijing 100013China School of Physics Liaoning UniversityShenyang 110036China School of Mechanics and Engineering Liaoning Technical UniversityFuxin 123000China

Rockbursts, which mainly affect mining roadways, are dynamic disasters arising from the surrounding rock under high stress. Understanding the interaction between supports and the surrounding rock is necessary for effective rockburst control. In this study, the squeezing behavior of the surrounding rock is analyzed in rockburst roadways, and a mechanical model of rockbursts is established considering the dynamic support stress, thus deriving formulas and providing characteristic curves for describing the interaction between the support and surrounding rock. Design principles and parameters of supports for rockburst control are proposed. The results show that only when the geostress magnitude exceeds a critical value can it drive the formation of rockburst conditions. The main factors influencing the convergence response and rockburst occurrence around roadways are geostress, rock brittleness, uniaxial compressive strength, and roadway excavation size. Roadway support devices can play a role in controlling rockburst by suppressing the squeezing evolution of the surrounding rock towards instability points of rockburst. Further, the higher the strength and the longer the impact stroke of support devices with constant resistance, the more easily multiple balance points can be formed with the surrounding rock to control rockburst occurrence. Supports with long impact stroke allow adaptation to varying geostress levels around the roadway, aiding in rockburst control. The results offer a quantitative method for designing support systems for rockburst-prone roadways. The design criterion of supports is determined by the intersection between the convergence curve of the surrounding rock and the squeezing deformation curve of the support devices.

关键词： Deep roadway Rockburst Dynamic interaction Rock support Surrounding rock Rockburst control

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Acupuncture Combined with Periocular Injection for Treatment of Hydroxychloroquine Retinopathy with Cystoid macular Edema:A Case Report

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Chinese Journal of Integrative Medicine 2025年第1期31卷 68-72页

作者： LI Tian-tian WU Yan YANG ying-xin XUE Yu-xin ma Chao-ting Department of Ophthalmology Beijing Hospital of Traditional Chinese MedicineCapital Medical UniversityBeijing100010China

Hydroxychloroquine(HCQ)is widely used in the treatment of autoimmune disorders such as systemic lupus erythematosus(SLE)and rheumatoid arthritis,and in recent years it has also been used in diseases such as cancer,neurodegenerative diseases,metabolic diseases,and microbial infections.(1)Due to the complex pharmacokinetic characteristics of HCQ,overdose or long-term use of the drug will lead to accumulation in the tissue of organism,and severe HCQ-related retinal toxicity may occur.A cohort study in America showes that after 10 and 15 years of HCQ use,the incidence of HCQ retinopathy will be 2.5%and 8.6%,respectively.(2)The clinical manifestations of HCQ retinopathy are various,mainly photoreceptor and retinal pigment epithelium(RPE)defects,some combined with cystoid macular edema(CME),and ireversible central vision loss.

关键词： Acupuncture diseases epithelium

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Electromagnetic wave absorption and corrosion resistance performance of carbon nanoclusters/Ce-Mn codoped barium ferrite composite materials

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International Journal of Minerals,Metallurgy and materials 2025年第3期32卷 699-709页

作者： Bo Li lin ma Sinan Li Jiewu Cui Xiaohui Liang Wei Sun Pengjie Zhang Nan Huang Song ma Zhidong Zhang Shenyang National Laboratory for materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China School of Metallurgy Engineering Liaoning Institute of Science and TechnologyBenxi 117004China School of materials Science and Engineering Hefei University of TechnologyHefei 230009China Institute of Microelectronics Hangzhou Dianzi UniversityHangzhou 310018China BGRIMM magnetic materials&Technology Co. Ltd.Beijing 100160China

To realize the application of electromagnetic wave absorption(EWA)devices in humid marine environments,bifunctional EWA materials with better EWA capacities and anticorrosion properties have great exploration significance and systematic research *** utilizing the low-cost and excellent magnetic and stable chemical characteristics of barium ferrite(BaFe_(12)O_(19))and using the high dielectric loss and excellent chemical inertia of nanocarbon clusters,a new type of nanocomposites with carbon nanoclusters en-capsulating BaFe_(12)O_(19)was designed and synthesized by combining an impregnation method and a high-temperature calcination ***,Ce-Mn ions were introduced into the BaFe_(12)O_(19)lattice to improve the dielectric and magnetic properties of BaFe_(12)O_(19)cores significantly,and the energy band structure of the doped lattice and the orders of Ce replacing Fe sites were *** from Ce-Mn ion doping and carbon nanocluster encapsulation,the composite material exhibited excellent dual functionality of corrosion resist-ance and *** BaCe_(0.2)Mn_(0.3)Fe_(11.5)O_(19)-C(BCM-C)was calcined at 600°C,the minimum reflection loss of-20.1 dB was achieved at 14.43 *** Ku band’s effective absorption bandwidth of 4.25 GHz was achieved at an absorber thickness of only 1.3 *** BCM-C/polydimethylsiloxane coating had excellent corrosion resistance in the simulated marine environment(3.5wt%NaCl solution).The|Z|0.01Hz value of BCM-C remained at 106Ω·cm^(2)after 12 soaking *** successful preparation of the BaFe_(12)O_(19)composite en-capsulated with carbon nanoclusters provides new insights into the preparation of multifunctional absorbent materials and the fabrication of absorbent devices applied in humid marine environments in the future.

关键词： electromagnetic wave absorption anticorrosion barium ferrite cerium and manganese doping carbon nanoclusters

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Internal transcribed spacer sequencing to explore the intrinsic composition of fungal communities in fungal esophagitis

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World Journal of Gastroenterology 2025年第7期31卷 26-38页

作者： Yi-Kang Song lin Zheng Ai-Xin Liu Jun-Ji ma Department of Gastroenterology The Second Hospital of Hebei Medical UniversityHebei Key Laboratory of GastroenterologyHebei Institute of GastroenterologyHebei Clinical Research Center for Digestive DiseasesShijiazhuang050000Hebei ProvinceChina

BACKGROUND Fungal esophagitis(FE)is caused by fungal invasion of the esophageal *** endoscopy,the esophageal mucosa shows edema,congestion,erosion,and ulceration,and bleeds easily when touched,and the surface of the mucosa is covered with small white spots like"bean curd residue".Clinical cases showing typical FE under endoscopic imaging but negative esophageal mucosal brush(referred to as suspected FE)have increased the difficulty and challenge of clinical diagnosis and *** present,the esophageal fungal flora of suspected case has not been thoroughly *** To characterize the fungal flora in FE,suspected FE,and the esophageal normal controls(NCs),and to identify marker species to improve detection of *** This was a case-control study.A total of 19 patients with FE,16 with suspected FE,and 10 NCs were selected by *** esophageal cell brush samples of each group were sequenced by internal transcribed spacer(ITS)1 and analyzed by *** In FE and suspected FE patients,species richness,species diversity and species evenness,as measured by the Chao1 index,Shannon index and Pielou index,were lower than in the NCs,and the comparison between the FE and NCs was the most significant(P<0.05).Compared with the NCs,the relative abundance of Candida in FE and suspected FE patients was significantly increased(P<0.001),while the relative abundance of Yarrowia was significantly decreased(P<0.05).Moreover,Yarrowia abundance in the FE group was significantly lower than in the NCs and suspected FE groups(P<0.001).The area under the curve for Candida in FE and suspected FE patients was 99.5%(P<0.05)and 81.3%(P<0.05),***,compared with FE patients,the relative abundance of Ascomycota and Candida in the esophageal flora of suspected FE patients was decreased,while the relative abundance of Yarrowia,Thermomyces and Pichia was *** ITS showed that composition of the fungal community was similar in the F

关键词： Fungal microbiota Esophagitis Candida Yarrowia Biomarker

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mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

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Science China Chemistry 2025年第1期68卷 329-336页

作者： Yuzhu Li Yumeng Gao Feng Tian Yu Wang Yuan Yao Shaoliang lin Xiang ma Binbin Xu Shanghai Key Laboratory of Advanced Polymeric materials Key Laboratory for Ultrafine Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China Key Laboratory for Advance materials and Feringa Noble Prize Scientist Joint Research Centre Frontiers Science for Materiobiology and Dynamic ChemistrySchool of Chemistry and Molecular EngineeringEast China University of Science&TechnologyShanghai 200237China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China

Developing organic room-temperature phosphorescence(RTP)materials with a wide range of tunable-emission is significant in expanding the applications of RTP ***,we rationally designed amphiphilic alternating copolymers poly(1,2-bis(4-alkoxyphenyl)ethane-1,2-dione-alt-(ethylene glycol)x)(P(Bz-alt-EGx))that combined the advantage of alternating benzil and EGxskeleton,and tunable mainchain *** a mainchain conformation ordering assembly(COA)process,P(Bz-alt-EGx)self-assembled into well-defined platelets,and such assemblies emitted blue RTP at ca.425 nm due to the ordered folded-chain conformation and confined *** contrast,traditional self-assembly(TA)of P(Bz-alt-EGx)obtained less ordered aggregates,such as asymmetric worms,vesicles,and rod-like *** resultant less ordered aggregates exhibited yellow-green RTP at ca.550 *** wide-tuning RTP emission in solution(between blue and yellow-green,over125 nm)is realized using the P(Bz-alt-EG_(x))alternating copolymers under the treatment of different self-assembly *** study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

关键词： self-assembly conformation ordering alternating copolymer phosphorescence emission

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Effect of cholesterol metabolism on hepatolithiasis

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World Journal of Gastroenterology 2025年第1期31卷 157-162页

作者： lin Zheng Zi-Yu Ye Jun-Ji ma Department of Gastroenterology The Second Hospital of Hebei Medical UniversityHebei Key Laboratory of GastroenterologyHebei Institute of GastroenterologyHebei Clinical Research Center for Digestive DiseasesNo.215 Heping West RoadShijiazhuang 050000Hebei ProvinceChina

Surgical intervention is currently the primary treatment for hepatolithiasis;how-ever,some patients still experience residual stones and high recurrence rates after *** metabolism seems to play an important role in hepatoli-thiasis pathogenesis.A high cholesterol diet is one of the significant reasons for the increasing incidence of ***,regular diet and appropriate medical intervention are crucial measures to prevent hepatolithiasis and reduce recurrence rate after *** dietary cholesterol and drugs that increase cholesterol stone solubility are key therapeutic approaches in treating *** article discusses the cholesterol metabolic pathways related to the pathogenesis of hepatolithiasis,as well as food intake and targeted therapeutic drugs.

关键词： Hepatolithiasis Cholesterol metabolism High-fat diet 3-hydroxy-3-methylglutaryl-coenzyme A reductase Interlobular bile duct

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Effects of Bifidobacterium lactis BLa80 on fecal and mucosal flora and stem cell factor/c-kit signaling pathway in simulated microgravity rats

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World Journal of Gastroenterology 2025年第1期31卷 93-109页

作者： Ping Zhang ying Zhu Pu Chen Tong Zhou Zhe-Yi Han Jun Xiao Jian-Feng ma Wen ma Peng Zang ying Chen Graduate School Hebei North UniversityZhangjiakou 075000Hebei ProvinceChina Key Laboratory of Aerospace Nutrition and Food Engineering China Astronaut Research and Training CenterBeijing 100094China Department of Gastroenterology The Air Force Medical CenterBeijing 100142China Department of Blood Transfusion Air Force Medical CenterBeijing 100142China

BACKGROUND Simulated microgravity environment can lead to gastrointestinal motility *** pathogenesis of gastrointestinal motility disorders is closely related to the stem cell factor(SCF)/c-kit signaling pathway associated with intestinal flora and Cajal stromal ***,intestinal flora can also affect the regulation of SCF/c-kit signaling pathway,thus affecting the expression of Cajal stromal *** cells are the pacemakers of gastrointestinal *** To investigate the effects of Bifidobacterium lactis(***)BLa80 on the intestinal flora of rats in simulated microgravity and on the gastrointestinal motility-related SCF/c-kit *** The internationally recognized tail suspension animal model was used to simulate the microgravity environment,and 30 rats were randomly divided into control group,tail suspension group and drug administration tail suspension group with 10 rats in each group for a total of 28 *** tail group was given *** BLa80 by intragastric administration,and the other two groups were given water intragastric administration,the concentration of intragastric administration was 0.1 g/mL,and each rat was 1 mL/***&eosin staining was used to observe the histopathological changes in each segment of the intestine of each group,and the expression levels of SCF,c-kit,extracellular signal-regulated kinase(ERK)and p-ERK in the gastric antrum of each group were detected by Western blotting and *** fecal flora and mucosal flora of rats in each group were detected by 16S *** Simulated microgravity resulted in severe exfoliation of villi of duodenum,jejunum and ileum in rats,marked damage,increased space between villi,loose arrangement,shortened columnar epithelium of colon,less folds,narrower mucosal thickness,reduced goblet cell number and crypts,and significant improvement after probiotic *** microgravity reduced the expressions of SCF and c-kit,and increased the express

关键词： Simulated microgravity Rat Intestinal flora Gastrointestinal motility Stem cell factor/c-kit signaling pathway

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Clinical significance of Ki-67 in patients with lung adenocarcinoma in situ complicated by type 2 diabetes

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World Journal of Diabetes 2025年第2期16卷 114-122页

作者： Ke Chen Ge Wang Jing-Cheng Hu ying-Yi Zhou Hai-Tao ma Department of Thoracic Surgery The First Affiliated Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina Department of Endocrine The First Affiliated Hospital of Soochow UniversitySuzhou 215000Jiangsu ProvinceChina

BACKGROUND The increasing number of type 2 diabetes mellitus(T2DM)patients leads to higher rates of morbidity and mortality related to lung *** To investigate the utility of the proliferating cell nuclear antigen Ki-67 in patients with lung adenocarcinoma in situ(AIS)complicated by *** One hundred patients with AIS and T2DM(group A),100 patients with AIS alone(group B),and 60 patients with benign lung lesions(group C)admitted to the Department of Thoracic Surgery and Endocrinology of the First Affiliated Hospital of Soochow University from November 2021 to December 2022 were ***-67 expression was compared among the *** Group A had significantly higher levels of fasting plasma glucose(FPG),total cholesterol(TC),total triglyceride,low-density lipoprotein cholesterol,glycosylated hemoglobin(HbA1c),and insulin than groups B and C(Plin levels than group C(Plin,HbA1c,high-density lipoprotein cholesterol and TC were independent factors for patients with AIS complicated by *** K et ***67 in patients with AIS complicated by T2DM WJD https://*** 2 February 15,2025 Volume 16 Issue 2 CONCLUSION Ki-67 expression was higher in patients with AIS complicated by T2DM than in patients with AIS ***,detecting the Ki-67 level might assist in the diagnosis of AIS in patients with T2DM.

关键词： Ki-67 Type 2 diabetes mellitus Lung adenocarcinoma in situ Immunohistochemistry Prognostic marker

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