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Integration of Electrical Properties and Polarization Loss Modulation on Atomic Fe–N‑RGO for Boosting Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第2期17卷 517-532页

作者： Kaili Zhang Yuefeng Yan zhen Wang Guansheng Ma Dechang jia Xiaoxiao Huang Yu zhou State Key Laboratory of Precision Welding&Joining of Materials and Structures Harbin Institute of TechnologyHarbin 150001People’s Republic of China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China MIIT Key Laboratory of Advanced Structural‑Functional Integration Materials&Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001People’s Republic of China

Developing effective strategies to regulate graphene’s conduction loss and polarization has become a key to expanding its application in the electromagnetic wave absorption(EMWA)*** on the unique energy band structure of graphene,regulating its bandgap and electrical properties by introducing heteroatoms is considered a feasible ***,metal-nitrogen doping reduced graphene oxide(M–N-RGO)was prepared by embedding a series of single metal atoms M–N_(4) sites(M=Mn,Fe,Co,Ni,Cu,Zn,Nb,Cd,and Sn)in RGO using an N-coordination atom-assisted *** composites had adjustable conductivity and polarization to optimize dielectric loss and impedance matching for efficient EMWA *** results showed that the minimum reflection loss(RL_(min))of Fe–N-RGO reaches−74.05 dB(2.0 mm)and the maximum effective absorption bandwidth(EAB_(max))is 7.05 GHz(1.89 mm)even with a low filler loading of only 1 wt%.Combined with X-ray absorption spectra(XAFS),atomic force microscopy,and density functional theory calculation analysis,the Fe–N_(4) can be used as the polarization center to increase dipole polarization,interface polarization and defect-induced polarization due to d-p orbital hybridization and structural ***,electron migration within the Fe further leads to conduction loss,thereby synergistically promoting energy *** study demonstrates the effectiveness of metal-nitrogen doping in regulating the graphene′s dielectric properties,which provides an important basis for further investigation of the loss mechanism.

关键词： Electromagnetic wave absorption Fe-N-RGO Dipole polarization Conduction loss Impedance matching

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Results of hip resurfacing for developmental dysplasia of the hip of Crowe type Ⅰ and Ⅱ

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Chinese Medical Journal 2008年第15期121卷 1379-1383页

作者： XU Wei-dong LI jia zhou zhen-hua WU Yue-song LI Ming Department of Orthopedics Changhai Hospital Affiliated to the Second Military Medical University Shanghai 200433 China

Background Recently, the new generation of metal-on-metal total hip resurfacing arthroplasty is well known for preserving the proximal femoral bone stock, minimizing the risk of postoperative dislocation using large femoral heads, and expecting low wear of metal-on-metal articulation for longer prosthesis survival. It also has the advantage in biomechanical loading in the proximal femur. The osteoarthritis secondary to developmental dysplasia of the hip （DDH） has been the most common reason for total hip arthroplasty. Most of the patients are young and active, who require improved range of motion of the hip besides relief of the pain, even expect to resume the ability to run and jump after the joint arthroplasty, thus to be allowed an active lifestyle. The objective of the current study was to evaluate the early outcome of resurfacing arthroplasty for the mild DDH cases （Crowe type Ⅰ and Ⅱ）. Methods Between September 2005 and May 2007, twenty-one consecutive patients （twenty-six hips） with the diagnosis of osteoarthritis secondary to DDH underwent metal-on-metal resurfacing arthroplasty. The average age at the time of surgery was 46.5 years （range, 37-59 years）. Six patients （28.6%） were male and fifteen （71.4%） were female. Clinical and radiographic results were observed. The follow-up was performed at 6 weeks, 3, 6, 9 months and then yearly. Results All patients were followed for a mean of 18 months （9-29 months）. During the follow-up period no complications, such as dislocation of hip joints, infection or femoral neck fracture occurred. The clinical outcomes, as rated with the Harris hip score, improved significantly compared with the preoperative ratings. The mean postoperative Harris hip score was 90.7, compared to 35.5 preoperatively. The radiographic analysis showed that all prostheses were fixed with no radiolucencies. All of the patients who had equal limb lengths preoperatively had equal lengths postoperatively. Of the nine patients with preoperative limb-

关键词： arthroplasty hip dislocation congenital

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TROY interacts with RhoGDIa to mediate Nogo-induced inhibition of neurite outgrowth

TROY interacts with RhoGDIa to mediate Nogo-induced inhibiti...

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中国神经科学学会第十届全国学术会议

作者： Yan LU Xiu-jie LIU jian-feng zhou jia-zhen zhou Cheng HE Institute of Neuroscience and MOE Key Laboratory of Molecular NeurobiologyNeuroscience Research Centre of Changzheng HospitalSecond Military Medical University

TROY can functionally substitute p75 to comprise Nogo receptor complex which transduces the inhibitory signal of myelin-associated inhibitory factors（MAIFs） on axon regeneration following central nervous system（CNS）*** inhibition of neurite extension rehes on TROY-dependent RhoA activation,but how TROY activates RhoA remains *** we firstly identified RhoGDIa as a binding partner of TROY using GST（glutathione S-transferase） pull-down combined with two-dimensional gel electrophoresis and mass spectra *** interaction was further confirmed by co-immunoprecipitation in vitro and in *** mutagenesis revealed that two regions of TROY intracellular domain（234-356 aa（amino acids） and 321-350 aa） were essential for the interaction with ***,TROY and RhoGDIa were co-expressed in postnatal dorsal root ganglion（DRG） neurons,cortex neurons and cerebellar granule neurons（CGNs）.Thirdly,TROY/RhoGDIa association was potentiated by Nogo-66 and was independent of p75/RhoGDIa ***,TROY/RhoGDIainteraction was still able to activate RhoA when p75 was *** activity was only slightly decreased in p75-deficient ***,RhoGDIa overexpression abohshed RhoA activation and following neurite outgrowth inhibition by Nogo-66 in both wild-type and p75-deficient *** results showed that the association with RhoGDIa of TROY contributed to TROY-dependent RhoA activation and neurite outgrowth inhibition after Nogo-66 stimulation.

关键词： TROY RhoGDIα neurite outgrowth RhoA Nogo-66

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Insufficient MIRO1 contributes to declined oocyte quality during reproductive aging

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Science China Life Sciences 2025年

作者： zhen-Nan Pan Hao-Lin Zhang Kun-Huan Zhang jia-Qian Ju Jing-Cai Liu Shao-Chen Sun College of Animal Science and Technology Nanjing Agricultural University Reproductive Medicine Centre The Affiliated Yantai Yuhuangding Hospital of Qingdao University

Mitochondrial Rho-GTPase 1 (MIRO1) is an outer mitochondrial membrane protein which regulates mitochondrial transport and mitophagy in mitosis. In present study, we reported the crucial roles of MIRO1 in mammalian oocyte meiosis and its potential relationship with aging. We found that MIRO1 expressed in mouse and porcine oocytes, and its expression decreased in aged mice. MIRO1 deficiency caused the failure of meiotic resumption and polar body extrusion in both mouse and porcine oocytes, which could be rescued by exogenous MIRO1supplementation. Mass spectrometry data indicated that MIRO1 associated with several cytoskeleton and cell cycle-related proteins, and MIRO1 regulated motor protein Dynein for microtubule-organizing centers (MTOCs) dynamics at germinal vesicle (GV) stage, which determined meiotic resumption. Furthermore, we found that MIRO1 regulated Aurora A and kinesin family member 11 (KIF11) for meiotic spindle assembly in oocytes. Besides, MIRO1 associated with several mitochondria-related proteins dynamic-related protein 1 (DRP1),Parkin and lysosomal-associated membrane protein 2 (LAMP2) for mitochondrial dynamics and mitophagy during oocyte meiosis. Taken together, our results suggested that MIRO1 played pivotal roles in meiotic resumption, spindle assembly and mitochondrial function in mouse and porcine oocytes, and its insufficiency might contribute to the oocyte maturation defects during aging.

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SHP-2 promotes the maturation of oligodendrocyte precursor cells through Akt and ERKl/2 signaling in vitro

SHP-2 promotes the maturation of oligodendrocyte precursor c...

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中国神经科学学会第九届全国学术会议暨第五次会员代表大会

作者： Xiu-Jie LIU,Yuan-Yuan LI,Yong ZHANG,Yan LU,Wei GUO,Peng LIU,jia-zhen zhou,zheng-Hua XIANG, Cheng HE~* Institute of Neuroscience and Key Laboratory of Molecular Neurobiology of Ministry of Education,Second Military Medical University,Shanghai 200433,China

＜正＞Objective Oligodendrocyte precursor cells（OPCs）differentiate into oligodendrocytes（OLs）,which are responsible for ***,the molecular mechanisms of maturation and myelination by oligodendrocytes remain *** present study is aim to explore the roles of SHP-2 in oligodendrocytes *** In this study,we first searched the potential tyrosine phosphatases involved in oligodendrocytes maturation using OPCs as the ***,we characterized SHP-2 expression during the development of oligodendrocytes by RTPCR, immunostaining and Western *** roles of SHP-2 in olidendrocytes maturation were detected by gene manipulations ***,the mechanism was examined by detecting activities of concerned kinases. Results（1）We found that SHP-2 was persistently expressed during developmental process of oligodendrocytes.（2） SHP-2 knock down attenuated oligodendrocytes maturation and this effect was triiodo-L-thyronine（T3）dependent. Over-expression of SHP-2 promoted maturation in primary cultured oligodendrocytes.（3）It has been identified that SHP-2 may regulate oligodendrocytes maturation through Akt and Erkl/2 *** SHP-2 promotes oligodendrocytes maturation via Akt and ERK1/2 signaling in vitro.

关键词： SHP-2 oligodendrocyte precursor cells maturation Akt ERK1/2

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两阶段供应链的订货定价协调及遗传算法运用

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系统仿真学报 2009年第9期21卷 2757-2763页

作者：李琳霍佳震周永务同济大学经济与管理学院上海200092 合肥工业大学管理学院物流与供应链研究所合肥230009

在价格敏感的市场需求下,研究了一对多的两级供应链的单一产品定价及订货协调模型。卖方作为博弈主方提出批发售价、价格折扣及共同补给期策略,而作为从方的买方以最优的零售价和订货策略响应。该协调模型在Stackelberg博弈的框架下,运... 详细信息

在价格敏感的市场需求下,研究了一对多的两级供应链的单一产品定价及订货协调模型。卖方作为博弈主方提出批发售价、价格折扣及共同补给期策略,而作为从方的买方以最优的零售价和订货策略响应。该协调模型在Stackelberg博弈的框架下,运用遗传算法讨论了Stackelberg均衡解。并利用数值试验方法通过仿真研究分析了该协调策略的有效性和可行性。

关键词：价格敏感需求 Stackelberg博弈协调价格折扣共同补给期遗传算法

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Scheme for Preparation of Macroscopic Multi-component Entanglement in Cavity QED

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Communications in Theoretical Physics 2008年第2期49卷 473-476页

作者： jia Lian-Jun YANG zhen-Biao zhou zhen-Xiao Department of Physics Lanzhou University Lanzhou 730000 China Department of Electronic Science and Applied Physics Fuzhou University Fuzhou 350002 China School of Nuclear Science and Technology Lanzhou University Lanzhou 730000 China

We propose a scheme of generating multi-component entangled coherent states of cavity fields. In this scheme, the atoms pass through cavities one by one, simultaneously driven by a strong classical field in each cavity. Then the detection of the atomic states collapses the cavity fields onto multi-component entangled coherent states. It is shown that, with a judicious choice of the parameters of the classical field, we can conditionally produce macroscopic multi-dimensional maximal entanglement for the cavity modes.

关键词： resonant interaction strongly driven atom multi-component entanglement cavity QED

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Accumulated damage process of thermal sprayed coating under rolling contact by acoustic emission technique

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Frontiers of Mechanical Engineering 2016年第3期11卷 227-232页

作者： jia XU zhen-yu zhou Zhong-yu PIAO Key Laboratory of Special Purpose Equipment and Advanced Processing Technology (Zhejiang University of Technology) Ministry ofEducation and Zhejiang Province Hangzhou 310014 China Key Laboratory of Special Purpose Equipment and Advanced Processing Technology (Zhejiang University of Technology) Ministry ofEducation and Zhejiang Province Hangzhou 310014 China The StateKey Laboratory of Fluid Power Transmission and Control Hangzhou310027 China

The accumulated damage process of rolling contact fatigue （RCF） of plasma-sprayed coatings was investigated. The influences of surface roughness, loading condition, and stress cycle frequency on the accumulated damage status of the coatings were discussed. A ball-on- disc machine was employed to conduct RCF experiments. Acoustic emission （AE） technique was introduced to monitor thc RCF process of the coatings. AE signal characteristics were investigated to reveal the accumulated damage process. Result showed that the polished coating would resist the asperity contact and remit accumulated damage. The RCF lifetime would then extend. Heavy load would aggravate the accumulated damage status and induce surface fracture. Wear became the main failure mode that reduced the RCF lifetime. Frequent stress cycle would aggravate the accumulated damage status and induce interface fracture. Fatigue then became the main failure mode that also reduced the RCF lifetime.

关键词： accumulated damage spray coating rolling contact fatigue acoustic emission

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Linear generalized synchronization of chaotic systems with uncertain parameters

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Journal of Systems Engineering and Electronics 2008年第4期19卷 779-784页

作者： jia zhen Dept. of Mathematics and Physics Guilin Univ. of Technology Guilin 541004 P. R. China

A more general form of projective synchronization, so called linear generalized synchronization （LGS） is proposed, which includes the generalized projective synchronization （GPS） and the hybrid projective synchronization （HPS） as its special cases, Based on the adaptive technique and Lyapunov stability theory, a general method for achieving the LGS between two chaotic or hyperehaotic systems with uncertain parameters in any scaling matrix is presented. Some numerical simulations are provided to show the effectiveness and feasibility of the proposed synchronization method.

关键词： generalized synchronization chaotic system hyperchaotic system uncertain parameter adaptive technique.

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Synthesis and Electrochemical Behavior of Electroactive Bistetrathiafulvalene-attached Thiacalix[4]arene Assemblies

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Chemical Research in Chinese Universities 2012年第5期28卷 828-832页

作者： ZHAO Bang-tun LI jia-jia zhou zhen YAN zhen-ning ZHU Wei-min College of Chemistry and Chemical Engineering Luoyang Normal UniversityLuoyang 471022P R.China Department of Chemistry Zhengzhou UniversityZhengzhou 450001P R.China

Tetrabromoalkylthiacalix[4]arenes（1a and 1b） reacted with excess bis（tetraethylammonium）-bis（1,3- dithiole-2-thione-4,5-dithiol）zincate（2） to give thiacalix[4]arene-thiones（3a and 3b） in the presence of Na2S. Two novel bistetrathiafulvalene-attached thiacalix[4]arene assemblies（5a and 5b） formed via triethyl phosphite-mediated cross-coupling of thiacalix[4]arene-thiones（3a and 3b） and 4,5-biscyanoethylthio-1,3-dithiole-2-one（4）. All the four new compounds were characterized by 1H NMR, 13C NMR, IR, MS spectra and elemental analysis. Meanwhile, the structures of thiacalix[4]arene-thiones（3a and 3b） were identified by X-ray analysis. In addition, the cyclic voltammograms of the resulting thiacalix[4]arenes containing electroactive TTF units（5a and 5b） were provided.

关键词： Thiacalixarene Tetrathiafulvalene X-Ray diffraction Cyclic voltammetry

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