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Thermodynamics of de Sitter Black Holes in massive Gravity

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Communications in Theoretical Physics 2018年第5期69卷 544-550页

作者： yu-bo ma Si-Xuan Zhang Yan Wu Li ma Shuo Cao Department of Physics Shanxi Datong UniversityDatong 037009China Department of Astronomy Beijing Normal UniversityBeijing 100875China Beijing Aerospace Petrochemical Technology and Equipment Engineering Corporation Beijing 100166China

In this paper, by taking de Sitter space-time as a thermodynamic system, we study the effective thermodynamic quantities of de Sitter black holes in massive gravity, and furthermore obtain the effective thermodynamic quantities of the space-time. Our results show that the entropy of this type of space-time takes the same form as that in Reissner-Nordstr¨om-de Sitter space-time, which lays a solid foundation for deeply understanding the universal thermodynamic characteristics of de Sitter space-time in the future. Moreover, our analysis indicates that the effective thermodynamic quantities and relevant parameters play a very important role in the investigation of the stability and evolution of de Sitter space-time.

关键词： de Sitter space-time thermodynamics black hole

One-pot synthesis of Pd-Au-alloy-nanoparticle-decorated graphene oxide functionalized with dodecahydrododecaborate cluster for rapid and complete reduction of 4-nitrophenol at room temperature

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Rare Metals 2023年第11期42卷 3622-3629页

作者： yu-bo ma yu-Wen Wang Da-Feng Zhang Xiu-Xiu Jia Yin Wang Shu-Xing Zhou Thomas Wagberg Guang-Zhi Hu School of Chemical Engineering Chongqing Chemical Industry Vocational CollegeChongqing401220China School of materials and Energy Institute for Ecological Research and Pollution Control of Plateau LakesYunnan UniversityKunming650504China School of materials Science and Engineering Liaocheng UniversityLiaocheng252000China Hubei Key Laboratory of Low Dimensional Optoelectronic materials and Devices Hubei University of Arts and ScienceXiangyang441053China Department of Physics UmeåUniversity90187UmeåSweden

The treatment of nitroaromatics in wastewater is a significant issue that must be addressed because of their high *** catalytic reduction of 4-nitrophenol(4-NP)to the widely used 4-aminophenol(4-AP)is an excellent method for 4-NP ***,performing this reaction is *** this study,two-dimensional(2D)graphene oxide(GO)with oxygen-containing surface groups was used as a substrate for the in situ anchoring ofPdAu alloy nanocrystals.

关键词： alloy rapid cluster

Conversion-type cathode materials for high energy density solid-state lithium batteries

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Journal of Energy Chemistry 2025年第1期100卷 409-425页

作者： yuhao ma Shihong Qing Hongyu Liu Chuntao ma yuan yu Chuang yu Liping Wang School of materials and Energy University of Electronic Science and Technology of China Zhejiang Provincial Key Laboratory of Fiber materials and manufacturing Technology Zhejiang Sci-Tech University State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology

Solid-state lithium batteries （SSLBs） are regarded as an essential growth path in energy storage systems due to their excellent safety and high energy *** particular,SSLBs using conversion-type cathode materials have received widespread attention because of their high theoretical energy densities,low cost,and *** the great progress in research and development of SSLBs based on conversiontype cathodes,their practical applications still face challenges such as blocked ionic-electronic migration pathways,huge volume change,interfacial incompatibility,and expensive processing *** review focuses on the advantages and critical issues of coupling conversion-type cathodes with solid-state electrolytes （SSEs）,as well as state-of-the-art progress in various promising cathodes （e.g.,FeS2,CuS,FeF3,FeF2,and S） in ***,representative research on conversion-type solid-state full cells is discussed to offer enlightenment for their practical ***,the energy density exhibited by the S cathode stands out impressively,while sulfide SSEs and halide SSEs have demonstrated immense potential for coupling with conversion-type ***,perspectives on conversion-type cathodes are provided at the material,interface,composite electrode,and battery levels,with a view to accelerating the development of conversion-type cathodes for high-energy–density SSLBs.

关键词： Sulfur compounds

Are There Any Clinical and Radiographic Differences Between Quadriceps-sparing and Mini-medial Parapatellar Approaches in Total Knee Arthroplasty After a Minimum 5 Years of Follow-up？

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Chinese Medical Journal 2015年第14期128卷 1898-1904页

作者： Ai-Bing Huang Hai-Jun Wang Jia-Kuo yu bo Yang Dong ma Ji-Ying Zhang Institute of Sports Medicine Peking University Third Hospital Beijing 100191 China

Background： Although the early clinical outcomes of total knee arthroplasty （TKA） using minimally invasive surgery techniques have been widely described, data on the mid- to long-term outcomes are limited. We designed a retrospective study to compare the two most common TKA techniques - The modified quadriceps-sparing （m-QS） approach and the mini-medial parapatellar （MMP） approach - In terms of the clinical and radiographic parameters, over a minimum follow-up period of 5 years. Methods： The m-QS approach was used in 31 knees and the MMP approach, in 36 knees. Knees in both groups were compared for component position and alignment, knee alignment, length of the skin incision, range of motion, Visual Analog Scale score, muscle torques, Knee Society Score, Western Ontario and Mcmaster Universities Osteoarthritis Index, and number of complications. Results： There were no major intergroup differences in any of the clinical and radiographic outcomes assessed at the final follow-up examination. Conclusions： On the basis of numbers studied, the m-QS group, which requires more technique, showed equivalent results with the MMP group in the postoperative 5 years. Preservation of the extensor mechanism in the m-QS approach could not ensure any improvement in the clinical outcomes during the mid-term follow-up duration.

关键词： Minimally Invasive Surgery Quadriceps-sparing Total Knee Arthroplasty

Thermodynamic quantities and phase transitions of five-dimensional de Sitter hairy spacetime

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Chinese Physics C 2023年第10期47卷 225-236页

作者：李新平张丽春马宇波李怀繁 Department of Physics Shanxi Datong UniversityDatong 037009China Institute of Theoretical Physics Shanxi Datong UniversityDatong 037009China

In this study,we take the mass,electric charge,hair parameter,and cosmological constant of five-dimensional de Sitter hairy spacetime as the state parameters of the thermodynamic system,and when these state parameters satisfy the first law of thermodynamics,the equivalent thermodynamic quantities of spacetime and the Smarr relation of five-dimensional de Sitter hairy spacetime are ***,we study the thermodynamic characteristics of the spacetime described by these equivalent thermodynamic quantities and find that de Sitter hairy spacetime has a phase transition and critical phenomena similar to those of van de Waals systems or charged AdS black *** is shown that the phase transition point of de Sitter hairy spacetime is determined by the ratio of two event horizon positions and the cosmic event horizon *** discuss the influence of the hair parameter and electric charge on the critical *** also find that the isochoric heat capacity of the spacetime is not zero,which is consistent with the ordinary thermodynamic system but differs from the isochoric heat capacity of AdS black holes,which is *** the Ehrenfest equations,we prove that the critical phase transition is a second order equilibrium phase *** on the thermodynamic properties of five-dimensional de Sitter hairy spacetime lays a foundation for finding a universal de Sitter spacetime thermodynamic system and studying its thermodynamic *** universe is an asymptotically dS spacetime,and the thermodynamic characteristics of de Sitter hairy spacetime will help us understand the evolution of spacetime and provide a theoretical basis to explore the physical mechanism of the accelerated expansion of the universe.

关键词： thermodynamic quantities phase transitions de Sitter hairy spacetime

FK506 contributes to peripheral nerve regeneration by inhibiting neuroinflammatory responses and promoting neuron survival

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Neural Regeneration Research 2025年第7期20卷 2108-2115页

作者： yuhui Kou Zongxue Jin yusong yuan bo ma Wenyong Xie Na Han Department of Trauma and Orthopedics Peking University People’s HospitalBeijingChina National Center for Trauma Medicine Peking University People’s HospitalBeijingChina Key Laboratory of Trauma and Neural Regeneration(Peking University) Ministry of EducationBeijingChina Trauma Medicine Center Peking University People’s HospitalBeijingChina Department of Orthopedics China-Japan Friendship HospitalBeijingChina

FK506(Tacrolimus)is a systemic immunosuppressant approved by the *** and Drug ***506 has been shown to promote peripheral nerve regeneration,however,its precise mechanism of action and its pathways remain *** this study,we established a rat model of sciatic nerve injury and found that FK506 improved the morphology of the injured sciatic nerve,increased the numbers of motor and sensory neurons,reduced inflammatory responses,markedly improved the conduction function of the injured nerve,and promoted motor function *** findings suggest that FK506 promotes peripheral nerve structure recovery and functional regeneration by reducing the intensity of inflammation after neuronal injury and increasing the number of surviving neurons.

关键词： FK506 inflammation motor neurons nerve regeneration neuron peripheral nerve injury sensory neurons

New glucocerebrosidase antibodies can advance research in the field of neurodegenerative disorders

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Neural Regeneration Research 2025年第4期20卷 1085-1086页

作者： Charis ma Krystyna Rytel yu Chen Ellen Sidransky Medical Genetics Branch National Human Genome Research InstituteNational Institutes of HealthBethesdaMDUSA

In medical research,there are times when the introduction of a new tool can launch scientific discovery in new *** antibody development may be considered mundane,in the field of glucocerebrosidase(GCase)research,the dearth of validated antibodies for different applications has impeded progress in studies of disease pathogenesis and therapeutic *** recent introduction of new,rigorously evaluated antibodies can now propel research into the link between glucocerebrosidase and Parkinson’s disease(PD)as well as aspects of the pathobiology of Gaucher disease(Jong et al.,2024).

关键词： antibodies cerebro

听觉通道语音冲突大脑皮层电位的听觉认知控制特征提取方法

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声学学报 2016年第6期41卷 870-880页

作者：于波李海峰马琳王勋达哈尔滨工业大学计算机科学与技术学院哈尔滨150001 哈尔滨理工大学软件学院哈尔滨150040

认知心理学发现,视觉、听觉接收到信息有冲突时,大脑皮层电位会发生扰动,由此可探索认知冲突控制的“刺激-反应”机制。视觉认知冲突实验较多,成果丰硕,而相应的听觉实验很少,并且得到不一样的结论。本研究利用冲突和非冲突的语音信号刺... 详细信息

认知心理学发现,视觉、听觉接收到信息有冲突时,大脑皮层电位会发生扰动,由此可探索认知冲突控制的“刺激-反应”机制。视觉认知冲突实验较多,成果丰硕,而相应的听觉实验很少,并且得到不一样的结论。本研究利用冲突和非冲突的语音信号刺激,分析研究脑电信号,提出基于三阶段听觉认知控制的时域特征模型。研究人脑听觉通道在出现语音认知冲突时的认知控制的规律下的单次试验脑电数据特征提取方法。根据得到的认知规律,单次试验脑电样本被分成3个部分。被分割的每个阶段使用时域上的平均幅值和Lempel-Ziv复杂度（LZC）进行计算,从而联合3个阶段的特征作为听觉认知脑电样本的特征。结果表明：（1）先发现的认知冲突相关的混合脑电成分“N1-P2＆N2＆Late-SW”分别体现了听觉认知控制的3个阶段;（2）一个更完整的听觉认知控制过程应包括3个阶段的时域特征：感知阶段：110~140 ms,识别阶段：260~320 ms,解决阶段：500~700 ms;（3）提出针对单次听觉认知控制脑电样本的特征提取方法,联合使用平均幅度和LZC可以获得最好的识别率（99.33%）。实验结果证明了提出的方法能够有效地检测听觉认知控制脑电数据,进而提供人脑认知控制能力评价的声学方法。

关键词：认知控制特征提取听觉刺激认知冲突认知心理学识别阶段皮层电位视觉认知 Stroop 脑电信号

GFRF R-CNN:Object Detection Algorithm for Transmission Lines

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Computers, materials & Continua 2025年第1期82卷 1439-1458页

作者： Xunguang Yan Wenrui Wang Fanglin Lu Hongyong Fan bo Wu Jianfeng yu Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai201210China University of Chinese Academy of Sciences Beijing100049China Jingwei Textile machinery Co. Ltd.Beijing100176China

To maintain the reliability of power systems,routine inspections using drones equipped with advanced object detection algorithms are essential for preempting power-related *** increasing resolution of drone-captured images has posed a challenge for traditional target detection methods,especially in identifying small objects in high-resolution *** study presents an enhanced object detection algorithm based on the Faster Regionbased Convolutional Neural Network(Faster R-CNN)framework,specifically tailored for detecting small-scale electrical components like insulators,shock hammers,and screws in transmission *** algorithm features an improved backbone network for Faster R-CNN,which significantly boosts the feature extraction network’s ability to detect fine *** Region Proposal Network is optimized using a method of guided feature refinement(GFR),which achieves a balance between accuracy and *** incorporation of Generalized Intersection over Union(GIOU)and Region of Interest(ROI)Align further refines themodel’s *** results demonstrate a notable improvement in mean Average Precision,reaching 89.3%,an 11.1%increase compared to the standard Faster *** highlights the effectiveness of the proposed algorithm in identifying electrical components in high-resolution aerial images.

关键词： Faster R-CNN transmission line object detection GIOU GFR