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煤矿主通风机电机启动方式应用分析

当代化工研究 2024年第15期 188-190页

作者：邸私私晋能控股煤业集团同忻煤矿山西有限公司山西037000

针对近年来矿井通风需求量的增大,通风机电机功率不断增大的现状,若采用传统的方式启动通风机,存在易对电网造成较大冲击,影响其他设备安全稳定运行的问题,为有效解决上述问题,重点研究了矿井主通风机电机启动方式,基于主通风机电机启... 详细信息

针对近年来矿井通风需求量的增大,通风机电机功率不断增大的现状,若采用传统的方式启动通风机,存在易对电网造成较大冲击,影响其他设备安全稳定运行的问题,为有效解决上述问题,重点研究了矿井主通风机电机启动方式,基于主通风机电机启动方式应用现状,对通风机电机三种主要启动方式:全压启动,软启动及变频启动进行分析,分析了各自的优势、劣势,并结合工程应用案例进行了对比分析,得出了各种启动方式较适合应用的场景,以为矿井通风机电机启动方式的科学,合理选择提供支持。

关键词：通风机电机启动方式全压启动软启动变频启动

Principle and Experimental Verification of Flexible Caudal Fin Based on Active Torsion Propulsion Mode

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Transactions of Nanjing University of Aeronautics and Astronautics 2016年第5期33卷 595-601页

作者： Guan Yuanlin Li Huafeng Yang Xixin di sisi School of Mechanical Engineering Qingdao University of Technology Qingdao 266100 P.R. China State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Nanjing 210016 P.R. China School of Data Science and Software Engineering Qingdao University Qingdao 266100 P.R. China

The active torsion propulsion mode of a caudal fin,composed of macro fiber composites(MFC)and carbon fiber orthotropic composite material is *** caudal fin is excited by the piezoelectric structure to vibrate *** work principle is firstly analyzed by finite element method(FEM)and *** the caudal fin is optimized to increase the torque and improve the streamline,and the added mass effect from the water is discussed in terms of the frequency of the *** torsion resonance frequency is around 103 Hz in the air and decreased by 75%to 25 Hz in the ***,the mean thrust is discussed and measured to be 11 mN at900V(Peak to peak)driving voltage.A flexible micro robot is developed and *** locomotion velocity and flow velocity is 320mm/s and 268mm/s,*** results of the simulation and experiments indicate that the locomotion of the biomimetic aquatic robot has fast movement characteristics.

关键词： macro fiber composite torsion vibration mode local travelling wave micro robot

A star-like photodetector for angle-based light sensing in 3D space

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Nano Research 2024年第8期17卷 7567-7573页

作者： Qi Pan sisi Chen Hongfei Xie Qiling Xu Meng Su Yanlin Song College of Chemistry Zhengzhou UniversityZhengzhou 450051China Key Laboratory of Green Printing CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences(ICCAS)Beijing Engineering Research Center of Nanomaterials for Green Printing TechnologyBeijing National Laboratory for Molecular Sciences(BNLMS)Beijing 100190China University of Chinese Academy of Sciences Beijing 100049China

The development of three-dimensional(3D)space light angle detection is vital in optical technology for applications such as 3D imaging,computer vision,and augmented *** methods involve advanced sensors and algorithms,including time-offlight cameras,which need multiple cameras and light sources to improve ***,it is a great challenge to integrate these complex components into compact *** semiconductor structures offer optical resonance characteristics,enabling precise light–matter interaction regulation.A 3D star-like photodetector,fabricated using a template assistant printing strategy,demonstrates optical resonances of the subwavelength facade and the shielding effect of spatial *** achieves light angle detection with the resolution of 10°in vertical space and the resolution of 36°in horizontal space,making it a promising prototype for various applications.

关键词： photodetector light angle detection printing subwavelength structure shielding effect

In vivofluorescenceflow cytometry reveals that the nanoparticle tumor vaccine OVA@HA-PEI effectively clears circulating tumor cells

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Journal of Innovative Optical Health Sciences 2024年第6期17卷 107-123页

作者： Wei Jin Yuting Fu sisi Ge Han Sun Kai Pang Xunbin Wei The Department of Biomedical Engineering Institute of Advanced Clinical Medicine Peking University Beijing 100191P.R.China Institute of Medical Technology Peking University Health Science Center Beijing 100191 P.R.China Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education/Beijing) Peking University Cancer Hospital&InstituteBeijing 100142P.R.China School of Instrument Science and Opto-Electronics Engineering Beijing Information Science&Technology University Beijing 100192 P.R.China

Tumor vaccine therapy offers significant advantages over conventional treatments,including reduced toxic side ***,it currently functions primarily as an adjuvant treatment modality in clinical oncology due to limitations in tumor antigen selection and delivery *** vaccines often fail to elicit a su±ciently robust immune response against progressive tumors,thereby limiting their clinical e±*** this study,we developed a nanoparticle-based tumor vaccine,OVA@HA-PEI,utilizing ovalbumin(OVA)as the presenting antigen and hyaluronic acid(HA)and polyethyleneimine(PEI)as adjuvants and *** formulation significantly enhanced the proliferation of immune cells and cytokines,such as CD3,CD8,interferon-,and tumor necrosis factor-,in vivo,effectively activating an immune response against B16–F10 *** vivofluorescenceflow cytometry(IVFC)has already become an effective method for monitoring circulating tumor cells(CTCs)due to its direct,noninvasive,and long-term detection *** study utilized a laboratory-constructed IVFC system to monitor the immune processes induced by the OVA@HA-PEI tumor vaccine and an anti-programmed death-1(PD-1)*** results demonstrated that the combined treatment of OVA@HA-PEI and anti-PD-1 antibody significantly improved the survival time of mice compared to anti-PD-1 antibody treatment ***,this combination therapy substantially reduced the number of CTCs in vivo,increased the clearance rate of CTCs by the immune system,and slowed tumor *** greatly enhance the clinical application prospects of IVFC and tumor vaccines.

关键词： Tumor vaccines circulating tumor cells in vivofluorescenceflow cytometry.

The Influential Mechanisms of Theory of Mind on Prosocial Behavior and the Effect of Mindfulness Intervention

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International Journal of Mental Health Promotion 2024年第9期26卷 679-695页

作者： sisi Li Nailiang Zhong Qingke Guo Department of Psychology Guangxi Normal UniversityGuilin541006China School of Teacher Education Hechi UniversityHechi546300China South China Normal University Liru Senior High School Xinyi525300China

Background:Theory of Mind(ToM)and empathy are crucial cognitive and emotional capacities that influence social *** their role in promoting prosocial behavior has been established,the potential moderating effect of mindfulness on this relationship remains *** these complex interactions is vital for developing effective interventions to foster prosocial behavior among college *** study examines the influence of ToM on college students’prosocial behavior and explores the moderating role of mindfulness in this ***:A mixed-methods approach combining questionnaires and experimental design was *** 1:A survey of 759 college students(mean age 22.03 years;477 females)was conducted using the ToM Scale,Interpersonal Reactivity Index,Prosocial Behavior Tendency Scale,and Mindfulness Awareness *** were analyzed using correlation and moderated mediation *** 2:An 8-week mindfulness attention training program was implemented for the intervention group and compared with a control *** training served as a moderating variable to validate Model 59 from Study ***:*** 1 found:(a)ToM was significantly positively correlated with prosocial behavior(r=0.31,pdiated the relationship between ToM and prosocial behavior(β=0.10,pdirect path between ToM and three dimensions of prosocial behavior,as well as the indirect path between empathy and kin altruism and reciprocal ***,high levels of mindfulness weakened the direct impact of ToM on prosocial *** levels of mindfulness also weakened the indirect influence of ToM on prosocial behavior through *** 2 results showed:(a)The intervention group had significantly higher levels of trait mindfulness compared to the control group(t=2.56,pdity of the moderated mediation model 59 from Study 1 w

关键词： Prosocial behavior Theory of Mind trait mindfulness empathy mindfulness intervention

Synthesis and optical properties of highly efficient Na_(3)KMg_(7)(PO_(4))_(6):Eu^(2+)blue phosphor for full-spectrum white-light-emitting diodes:The role of Li_(2)CO_(3)flux

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Journal of Rare Earths 2024年第7期42卷 1217-1223,I0001页

作者： Zihao Wang sisi Liang Chenyang Zhan Kunyuan Xu Jie Hu Dejian Chen Liping Song Haomiao Zhu School of Physics and Materials Science Nanchang UniversityNanchang330000China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou341000China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou350002China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Research Center of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen361021China

Full-spectrum phosphor-converted white-light-emitting diodes(pc-WLED)are emerging as a mainstream technology in semiconductor ***,high-performance blue phosphor which can be excited efficiently by a 400 nm NUV diode chip is still ***,we present a blue-emitting Na_(3)KMg_(7)(PO_(4))6:Eu^(2+)phosphor synthesized by the solid-reaction ***,we find that the using of Li_(2)CO_(3)as flux can significantly improve the crystal quality and thus the emission efficiency of the ***,the excitation peak of the phosphor shifts from 365 to 400 nm,which is pivotal for efficient NUV(400 nm)diode chip *** practical Eu^(2+)concentration is also enhanced by using Li_(2)CO_(3)as flux,and the absorption efficiency is greatly *** phosphor exhibits superior PL thermal stability,namely retains 94%integrated photoluminescence intensity at 150℃of that at 25℃.As a result,the optimized phosphor shows an emission band peaked at 437 nm with a bandwidth of 40 nm and a high external photoluminescence quantum yield of 51.7%.Finally,a pc-WLED was fabricated by using NKMPO:Eu^(2+)blue,Sr_(2)SiO_(4):Eu^(2+)green,CaAlSiN_(3):Eu^(2+)red phosphors,and a 400 nm NUV diode *** shows a high color rendering index of R_(a)=96.4 and a correlated color temperature of 4358 *** results prove that NKMPO:Eu^(2+)is a promising blue phosphor for full-spectrum WLED based on NUV diode chips.

关键词： Eu^(2+) Blue phosphor Na_(3)KMg_(7)(PO_(4))_(6) Full-spectrum white LEDs Rare earths

Advancing microarray fabrication:One-pot synthesis and highresolution patterning of UV-crosslinkable perovskite quantum dots

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Nano Research 2024年第9期17卷 8600-8609页

作者： Linfeng Yuan Dejian Chen Kun He Jiamin Xu Kunyuan Xu Jie Hu sisi Liang Haomiao Zhu CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China University of Chinese Academy of Sciences Beijing 100049China College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Research Center of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen 361021China

The development of highly efficient,solution-processable,and environmentally stable perovskite quantum dots(PQDs)is crucial for their accurate high-resolution patterning and subsequently enabling the practical deployment of PQD based emissive display *** study presents an innovative strategy for integrating all-inorganic PQDs and ultraviolet(UV)crosslinkable acrylate polymer at a structural and functional *** achievement is accomplished by meticulous design and one-pot synthesis of UV-crosslinkable CsPbX_(3)(X=Cl,Br,I)PQDs solution,which exhibit outstanding environmental *** the solution-processable characteristics of the resulting UV-crosslinkable PQDs,precise patterning of high-resolution(2μm,7608 pixels·in.^(-1))and colorful PQDs microarrays can be readily achieved through inkjet printing and high-throughput photolithography(~2μm in pitch line/space patterning).The UV cross-linked process guarantees a homogeneous distribution of PQDs,effectively mitigating coffee ring effect and improving the overall quality of stereoscopic *** photo-cured PQDs film,which undergoes free radical photopolymerization,displays an impressive photoluminescence quantum yield(PL QY)of up to 89.2%,reaching 98%of the value observed in the solution *** approach outlined in this research is both cost-effective and pragmatic,exhibiting tremendous promise for diverse system-level integrated optoelectronic devices,such as ultra-high-resolution micro-light-emitting device(micro-LED)displays.

关键词： perovskite quantum dots microarrays cross-linking strategy Inkjet printing photolithography

Identification and Analysis of the WRKY Transcription Factor Gene Family in Verbena bonariensis

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Phyton-International Journal of Experimental Botany 2024年第8期93卷 1875-1896页

作者： Dandan Yuan Ju Cai Tao Zhang sisi Wang Xiuliu Yang Yan Li The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region(Ministry of Education) Guizhou UniversityGuiyang550025China

The WRKY transcription factor gene family is one of the unique gene families in *** plays an important role in response to abiotic stresses such as cold and drought,hormone signal transduction,regulation of biosynthesis,leaf senescence seed germination,***,little information is available about WRKY transcription factors in Verbena *** this study,70 VbWRKY genes were identified from the whole *** phylogenetic analysis of the WRKY gene family in *** and Arabidopsis shows that the WRKY genes in *** can be divided into three groups:I,II,and III,which contain 13,47,and 10 members,*** II can be further divided into five subclasses:IIa(5),IIb(10),IIc(18),IId(6),and IIe(8).Conservative motif analysis showed that 64 proteins encoded by the VbWRKY gene had conserved motifs 1,2 and 3,and the same subclass motif elements were approximately the *** collinearity analysis showed that there were 44 homologous gene pairs among the VbWRKYs,and these homologous gene pairs may have the same *** sequence analysis showed that the VbWRKY gene has multiple cis-acting elements,including not only cis-acting elements related to low-temperature and light responses,but also cis-acting elements related to hormone regulation,Among them,most VbWRKY genes contain response elements about low-temperature,and 30 VbWRKY genes contain low-temperature response elements(LTR),and 61 VbWRKY genes contain abscisic acid response elements(ABRE),indicating that VbWRKY plays a crucial role in plant growth and abiotic *** to the expression of VbWRKY in the cold stress and different tissues transcriptome,70 VbWRKY genes played their respective roles in various tissues and stages to regulate plant growth,Also,some of them participated in the process of cold stress tolerance,52 VbWRKYs showed significant differences in expression under cold stress,and 37 VbWRKY genes were up-regulated under cold stress.9 VbWRKY genes w

关键词： Verbena bonariensis WRKY gene family cold resistance

In-situ sludge reduction based on Mn^(2+)-catalytic ozonation conditioning:Feasibility study and microbial mechanisms

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Journal of Environmental Sciences 2024年第1期135卷 185-197页

作者： Haozhe Huang Tingting Wei Hui Wang Bing Xue sisi Chen Xiankai Wang Haibin Wu Bin Dong Zuxin Xu College of Environmental Science and Engineering Tongji UniversityShanghai 200092China YANGTZE Eco-Environment Engineering Research Center China Three Gorges CorporationBeijing 100038China

To improve the sludge conditioning efficiency without increasing the ozone dose,an in-situ sludge reduction process based on Mn^(2+)-catalytic ozonation conditioning was *** ozone conditioning alone as a control,a lab-scale sequencing batch reactor coupled with ozonated sludge recycle was evaluated for its operating performance at an ozone dose of 75 mg O_(3)/g VSS and 1.5 mmol/L Mn^(2+)*** results showed a 39.4%reduction in MLSS and an observed sludge yield of 0.236 kg MLSS/kg COD for the O_(3)+Mn^(2+)group compared to the O_(3)group (15.3%and 0.292 kg MLSS/kg COD),accompanied by better COD,NH_(4)^(+)-N,TN and TP removal,improved effluent SS and limited impact on excess sludge ***,activity tests,BIOLOG ECO microplates and 16S rRNA sequencing were applied to elucidate the changing mechanisms of Mn^(2+)-catalytic ozonation related to microbial action:(1) Dehydrogenase activity reached a higher peak.(2) Microbial utilization of total carbon sources had an elevated effect,up to approximately 18%,and metabolic levels of six carbon sources were also increased,especially for sugars and amino acids most pronounced.(3) The abundance of Defluviicoccus under the phylum Proteobacteria was enhanced to 12.0%and dominated in the sludge,they had strong hydrolytic activity and metabolic *** bacteria of the genus Ferruginibacter also showed an abundance of 7.6%,they contributed to the solubilization and reduction of sludge *** results could guide researchers to further reduce ozonation conditioning costs,improve sludge management and provide theoretical support.

关键词： Activated sludge In-situ reduction Catalytic ozonation conditioning Dehydrogenase activity Carbon source utilization Microbial community