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连采面压风口和抽风口风流调控下除尘效果分析

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金属矿山 2023年第7期 91-98页

作者：邱进伟邹云吕逸飞安徽理工大学安全科学与工程学院安徽淮南232001 深部煤矿采动响应与灾害防控国家重点实验室安徽淮南232001

为降低连采面粉尘浓度,对加入抽、压风口垂直下偏角对降尘效果的影响规律进行了研究。以红柳林煤矿25211工作面为例,将压风筒直径d_(1)、压风口水平偏转角α_(1)、压风口垂直下偏角β_(1)、抽风筒直径d_(2)、抽风口水平偏转角α_(2)和... 详细信息

为降低连采面粉尘浓度,对加入抽、压风口垂直下偏角对降尘效果的影响规律进行了研究。以红柳林煤矿25211工作面为例,将压风筒直径d_(1)、压风口水平偏转角α_(1)、压风口垂直下偏角β_(1)、抽风筒直径d_(2)、抽风口水平偏转角α_(2)和抽风口垂直下偏角β_(2)等6个参数作为风流调控参数,通过数值模拟获取了不同风流调控参数调控后的粉尘浓度数据。基于响应曲面法和粒子群优化算法,以司机位置处和呼吸带高度粉尘浓度为优化目标,获得了连采面最佳风流参数。研究结果表明:加入抽、压风筒垂直下偏角,改变压抽比和压风筒距尘源的位置,粉尘浓度均降低;工作面与连采机之间的作业空间内,巷道下部粉尘浓度高于上部粉尘浓度;在距迎头40m巷道范围内,粉尘浓度呈现出先逐渐增加后逐渐减小的变化趋势;各参数对司机位置处和呼吸带高度的粉尘浓度影响程度分别为α_(1)>β_(1)>d_(1)>d_(2)>α_(2)>β_(2)、d_(2)>α_(1)>d_(1)>β_(1)>β_(2)>α_(2);通过上述分析获得的连采面最佳风流参数为d_(1)=0.9m、d_(2)=1.1m、α_(1)=0°、β_(1)=1°、α_(2)=10°、β_(2)=8°。经调控后司机位置处粉尘浓度由297.09mg/m^(3)降低到134.98mg/m^(3),降低了54.57%;呼吸带高度粉尘浓度由217.35mg/m^(3)降低到86.50mg/m^(3),降低了60.20%,有效降低了巷道内粉尘浓度,实现了连采面粉尘的高效防控。

关键词：矿井粉尘防控连采面长压短抽风流调控响应曲面法粒子群优化算法

Genetic variant in a BaP-activated super-enhancer increases prostate cancer risk by promoting AhR-mediated FAM227A expression

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Journal of Biomedical Research 2024年第2期38卷 149-162,I0001-I0010页

作者： lulu Fan Hao Wang Shuai Ben yifei Cheng Silu Chen Zhutao Ding lingyan Zhao Shuwei li Meilin Wang Gong Cheng Department of Environmental Genomics Jiangsu Key Laboratory of Cancer BiomarkersPrevention and TreatmentCollaborative Innovation Center for Cancer Personalized MedicineSchool of Public HealthNanjing Medical UniversityNanjingJiangsu 211166China Department of Genetic Toxicology the Key Laboratory of Modern Toxicology of Ministry of EducationCenter for Global HealthSchool of Public HealthNanjing Medical UniversityNanjingJiangsu 211166China Department of Urology the First Affiliated Hospital of Nanjing Medical UniversityJiangsu Province HospitalNanjingJiangsu 210029China

Genetic variants in super-enhancers(SEs)are increasingly implicated as a disease risk-driving *** studies have reported an associations between benzo[a]pyrene(BaP)exposure and some malignant tumor ***,it is unclear whether BaP is involved in the effect of genetic variants in SEs on prostate cancer risk,nor the associated intrinsic molecular *** the current study,by using logistic regression analysis,we found that rs5750581T>C in 22q-SE was significantly associated with prostate cancer risk(odds ratio=1.26,P=7.61×10^(-5)).We also have found that the rs6001092T>G,in a high linkage disequilibrium with rs5750581T>C(r^(2)=0.98),is located in a regulatory aryl hydrocarbon receptor(AhR)motif and may interact with the FAM227A promoter in further bioinformatics *** then performed a series of functional and BaP acute exposure experiments to assess biological function of the genetic variant and the target ***,the rs6001092-G allele strengthened the transcription factor binding affinity to AhR,thereby upregulating FAM227A,especially upon exposure to BaP,which induced the malignant phenotypes of prostate *** current study highlights that AhR acts as an environmental sensor of BaP and is involved in the SE-mediated prostate cancer risk,which may provide new insights into the etiology of prostate cancer associated with the inherited SE variants under environmental carcinogen stressors.

关键词： super-enhancer prostate cancer genetic variants AhR BaP FAM227A

Research paper Air atmosphere available fast one-pot synthesis of VO_(2)nanoparticles with excellent thermochromic properties by a novel liquid-shielding method

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Journal of Materiomics 2024年第1期10卷 17-26页

作者： Zhi Cao Jin li Chunhui Zhang Ke Jiao Yunxiang Chen yifei liu Xinghui Hou Haipeng Ji liying Zhang Shasha Yi Yu Wang Zhang Chen Yanfeng Gao Zongtao Zhang School of Materials Science and Engineering Zhengzhou UniversityKexue Ave 100Zhengzhou450001China School of Materials Science and Engineering Shanghai UniversityShangda Rd 99Shanghai200444China

As a typical strongly correlated transition oxide,vanadium dioxide(VO_(2))based nanomaterials have drawn many research attentions these years due to the giant metal-to-insulator phase transition(MIPT)at around 68℃.However,due to the complexities of the V-O system and interplays between various vanadium oxide phases,the synthesis of high-quality VO_(2)nanopowders is still fraught with many challenges,especially in air *** this paper,we report a novel air atmosphere available liquid-shielding synthesis method for thermochromic VO_(2)nanoparticles,by using low-eutectic molten-salt(liCl-KCl)as the liquid-state air-insulation medium at elevated temperature and high-pressure pressed VOSO_(4)-KCl pillars immersed in these liquid salts as the *** amounts of glucose are added to introduce a slight reductive environment,and well dispersed VO_(2)nanoparticles with excellent ther-mochromic properties can be directly synthesized at an ultra-low temperature of 375℃.This feasible and atmosphere-available mass-production method is rarely reported in the related fields,which may provide a novel protocol strategy for the synthesis of high performance thermochromic VO_(2)and other functional oxide powders.

关键词： Vanadium dioxide Nanoparticle Molten salt liquid shielding Thermochromic properties

Multifunctional solar-blind ultraviolet photodetectors based on p-PCDTBT/n-Ga_(2)O_(3)heterojunction with high photoresponse

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InfoMat 2024年第2期6卷 118-130页

作者： yifei Wang Zhenhua lin Jingli Ma Yongyi Wu Haidong Yuan Dongsheng Cui Mengyang Kang XingGuo Jie Su Jinshui Miao Zhifeng Shi Tao li Jincheng Zhang Yue Hao Jingjing Chang State Key Discipline laboratory of Wide Band Gap Semiconductor Technology School of MicroelectronicsXidian UniversityXi'anthe People's Republic of China School of Physics and Microelectronics Key Laboratory of Material PhysicsMinistry of EducationZhengzhou UniversityZhengzhouthe People's Republic of China Center for Spintronics and Quantum Systems State Key Laboratory for Mechanical Behavior of MaterialsDepartment of Materials Science and EngineeringXi'an Jiaotong UniversityXi'anthe People's Republic of China Advanced Interdisciplinary Research Center for Flexible Electronics Xidian UniversityXi'anthe People's Republic of China State Key laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghaithe People's Republic of China

Solar-blind ultraviolet(UV)photodetectors based on p-organic/n-Ga_(2)O_(3) hybrid heterojunctions have attracted extensive attention ***,the multifunctional solar-blind photodetector based on p-type poly[N-90-heptadecanyl-2,7-carbazole-alt-5,5-(40,70-di-2-thienyl-20,10,30-benzothiadiazole)](PCDTBT)/n-type amorphous Ga_(2)O_(3)(a-Ga_(2)O_(3))is fabricated and investigated,which can work in the phototransistor mode coupling with self-powered *** the introduction of PCDTBT,the dark current of such the a-Ga_(2)O_(3)-based photodetector is decreased to 0.48 ***,the photoresponse parameters of the a-Ga_(2)O_(3)-based photodetector in the phototransistor mode to solar-blind UV light are further increased,that is,responsivity(R),photo-detectivity(D*),and external quantum efficiency(EQE)enhanced to 187 A W^(-1),1.3×10^(16) Jones and 9.1×10^(4)% under the weak light intensity of 11μW cm^(-2),*** to the formation of the built-in field in the p-PCDTBT/n-Ga_(2)O_(3) type-Ⅱ heterojunction,the PCDTBT/Ga_(2)O_(3) multifunctional photodetector shows self-powered *** responsivity of p-PCDTBT/n-Ga_(2)O_(3) multifunctional photodetector is 57.5 mA W^(-1) at zero *** multifunctional p-n hybrid heterojunction-based photodetectors set the stage for realizing high-performance amorphous Ga_(2)O_(3) heterojunction-based photodetectors.

关键词： amorphous Ga_(2)O_(3) heterojunction multifunctional PCDTBT solar-blind photodetectors

loss of energetic particles due to feedback control of resistive wall mode in Hl-3

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Plasma Science and Technology 2024年第10期26卷 17-28页

作者： yifei ZHAO Yueqiang lIU Guangzhou HAO Zhengxiong WANG Guanqi DONG Shuo WANG Chunyu lI Guanming YANG Yutian MIAO Yongqin WANG Dalian University of Technology Dalian 116024People’s Republic of China General Atomics San Diego CA 92186-5608United States of America Southwestern Institute of Physics Chengdu 610041People’s Republic of China

Effects of three-dimensional(3D)magnetic field perturbations due to feedback control of an unstable n=1(n is toroidal mode number)resistive wall mode(RWM)on the energetic particle(EP)losses are systematically investigated for the Hl-3 *** MARS-F(liu et al 2000 *** 73681)code,facilitated by the test particle guiding center tracing module REORBIT,is utilized for the *** RWM is found to generally produce no EP loss for cocurrent particles in *** the same perturbation level at the sensor location for the close-loop system,feedback produces nearly the same loss of counter-current EPs compared to the open-loop *** however that the sensor signal is ten times smaller in the close-loop system than the open-loop counter part(reflecting the fact that the RWM is more stable with feedback),the counter-current EP loss is found significantly reduced in the *** of EP losses occur only for particles launched close to the plasma edge,while particles launched further away from the plasma boundary experience much less *** strike points of lost EPs on the Hl-3 limiting surface become more scattered for particles launched closer to the plasma *** into account the full gyro-orbit of particles while approaching the limiting surface,REORBIT finds slightly enhanced loss fraction.

关键词： energetic particles resistive wall mode Hl-3

Through-polymer,via technology-enabled,flexible,lightweight,and integrated devices for implantable neural probes

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Microsystems & Nanoengineering 2024年第2期10卷 279-291页

作者： Cunkai Zhou Ye Tian Gen li yifei Ye lusha Gao Jiazhi li Ziwei liu Haoyang Su Yunxiao lu Meng li Zhitao Zhou Xiaoling Wei lunming Qin Tiger H.Tao liuyang Sun College of Electronics and Information Engineering Shanghai University of Electric PowerShanghaiChina 2020 X-lab Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghaiChina School of Graduate Study University of Chinese Academy of SciencesBeijingChina State Key laboratory of Transducer Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghaiChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina School of Physical Science and Technology ShanghaiTech UniversityShanghaiChina Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of SciencesShanghaiChina Neuroxess Co. Ltd.(Jiangxi)NanchangJiangxiChina Guangdong Institute of Intelligence Science and Technology HengqinZhuhaiGuangdongChina Tianqiao and Chrissy Chen Institute for Translational Research ShanghaiChina

In implantable electrophysiological recording systems,the headstage typically comprises neural probes that interface with brain tissue and integrated circuit chips for signal *** advancements in MEMS and CMOS technology have significantly improved these components,their interconnection still relies on conventional printed circuit boards and sophisticated *** conventional approach adds considerable weight and volume to the package,especially for high channel count *** address this issue,we developed a through-polymer via(TPV)method inspired by the through-silicon via(TSV)technique in advanced three-dimensional *** innovation enables the vertical integration of flexible probes,amplifier chips,and PCBs,realizing a flexible,lightweight,and integrated device(FlID).The total weight of the FlIDis only 25%that of its conventional counterparts relying on adapters,which significantly increased the activity levels of animals wearing the FlIDs to nearly match the levels of control animals without ***,by incorporating a platinum-iridium alloy as the top layer material for electrical contact,the FlID realizes exceptional electrical performance,enabling in vivo measurements of both local field potentials and individual neuron action *** findings showcase the potential of FlIDs in scaling up implantable neural recording systems and mark a significant advancement in the field of neurotechnology.

关键词： alloy neural recording

Establishment of abdominal aortocaval fistula in adenine-induced renal failure rats

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China Medical Abstracts(Internal Medicine) 2024年第2期41卷 115-116页

作者：张艺斐 Shandong Med Sci Acad Shandong 1st Med UnivJinan 250000

Objective To explore the construction of abdominal aortocaval fistula(ACF)model in adenine-induced renal failure rats,and to provide a suitable animal model for subsequent mechanism and intervention *** Adult female Sprague-Dawley rats(250-300 g)were fed with 0.75%adenine diet(renal failure group,n=60)and the same diet without adenine(control group,n=10)for 4 weeks,and the rats were randomly grouped by block randomization method with a ratio of 6:*** rats in the renal failure group were randomly selected by block randomization method at a ratio of 1:1 to undergo laparotomies to establish ACF models(renal failure+ACF group).The serum creatinine,blood urea nitrogen detection and Masson staining were used to evaluate the establishment of renal failure *** animal ultrasound imaging system was applied to verify the successful construction of the ACF *** 6 weeks of ACF observation,blood samples were collected from the heart of rats,and ACF-vascular tissues were collected for pathological study(HE staining).Results At 4 weeks of feeding.

关键词： rats fistula renal

lunar In Situ large-Scale Construction:Quantitative Evaluation of Regolith Solidification Techniques

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Engineering 2024年第8期39卷 204-221页

作者： Charun Bao Daobo Zhang Qinyu Wang yifei Cui Peng Feng MOE Key laboratory of Civil Engineering Safety and Durability Department of Civil EngineeringTsinghua UniversityBeijing 100084China State Key laboratory of Hydroscience and Engineering Tsinghua UniversityBeijing 100084China

lunar habitat construction is crucial for successful lunar exploration *** to the limitations of transportation conditions,extensive global research has been conducted on lunar in situ material processing techniques in recent *** aim of this paper is to provide a comprehensive review,precise classification,and quantitative evaluation of these approaches,focusing specifically on four main approaches:reaction solidification(RS),sintering/melting(SM),bonding solidification(BS),and confinement formation(CF).Eight key indicators have been identified for the construction of low-cost and highperformance systems to assess the feasibility of these methods:in situ material ratio,curing temperature,curing time,implementation conditions,compressive strength,tensile strength,curing dimensions,and environmental *** scoring thresholds are determined by comparing the construction requirements with the actual *** the evaluated methods,regolith bagging has emerged as a promising option due to its high in situ material ratio,low time requirement,lack of hightemperature requirements,and minimal shortcomings,with only the compressive strength falling below the neutral *** compressive strength still maintains a value of 2–3 *** proposed construction scheme utilizing regolith bags offers numerous advantages,including rapid and large-scale construction,ensured tensile strength,and reduced reliance on equipment and *** this study,guidelines for evaluating regolith solidification techniques are provided,and directions for improvement are *** proposed lunar habitat design based on regolith bags is a practical reference for future research.

关键词： lunar habitats lunar in situ construction Regolith bag Solidification and formation In situ materials Evaluation method

Emerging probing perspective of two-dimensional materials physics:terahertz emission spectroscopy

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light(Science & Applications) 2024年第7期13卷 1278-1298页

作者： yifei Wu Yuqi Wang Di Bao Xiaonan Deng Simian Zhang lin Yu-chun Shengxian Ke Jianing liu Yingjie liu Zeli Wang Pingren Ham Andrew Hanna Jiaming Pan Xinyue Hu Zhengcao li Ji Zhou Chen Wang State Key laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua University100084 BeijingChina Beijing Advanced Innovation Center for Integrated Circuits 100084 BeijingChina

Terahertz(THz)emission spectroscopy(TES)has emerged as a highly effective and versatile technique for investigating the photoelectric properties of diverse materials and nonlinear physical processes in the past few ***,research on two-dimensional(2D)materials has experienced substantial growth due to their atomically thin structures,exceptional mechanical and optoelectronic properties,and the potential for applications in flexible electronics,sensing,and ***,these materials offer advantages such as tunable bandgap,high carrier mobility,wideband optical absorption,and relatively short carrier *** applying TES to investigate the 2D materials,their interfaces and heterostructures,rich information about the interplay among photons,charges,phonons and spins can be unfolded,which provides fundamental understanding for future *** it is timely to review the nonlinear processes underlying THz emission in 2D materials including optical rectification,photon-drag,high-order harmonic generation and spin-to-charge conversion,showcasing the rich diversity of the TES employed to unravel the complex nature of these *** applications based on THz emissions,such as THz lasers,ultrafast imaging and biosensors,are also *** further,we analyzed the unique advantages of spintronic terahertz emitters and the future technological advancements in the development of new THz generation mechanisms leading to advanced THz sources characterized by wide bandwidth,high power and integration,suitable for industrial and commercial *** continuous advancement and integration of TES with the study of 2D materials and heterostructures promise to revolutionize research in different areas,including basic materials physics,novel optoelectronic devices,and chips for post-Moore’s era.

关键词： optoelectronic versatile exceptional