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On static and spherically symmetric solutions of Starobinsky model

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Research in Astronomy and Astrophysics 2018年第12期18卷 131-136页

作者： Shuang Yu Chang-jun gao ming-jun Liu Key Laboratory of Computational Astrophysics National Astronomical Observatories Chinese Academy of Sciences School of Astronomy and Space Sciences University of Chinese Academy of Sciences Department of Astronomy School of Physics Peking University

We investigate the problem of static and spherically symmetric solutions in the Starobinsky gravity *** extending the Lichnerowicz and Israel theorems, William Nelson has demonstrated that the Schwarzschild solution is the unique static, spherically symmetric and asymptotically flat black hole solution in the Starobinsky ***, Hong Lüet *** that there are sign errors in the proof of *** raises the problem of whether Nelson’s proof is correct or *** order to answer this question, we explore the corresponding solutions by using the Taylor series expansion *** find that Nelson’s conclusion is indeed correct despite the flaw in the proof.

关键词： black hole physics:gravitation

Is it possible to foot reflexology for infants with sensorineural hearing loss?

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World Journal of Clinical Cases 2025年第2期13卷 1-4页

作者： Min Ai Hang-Hang Zhang jun-Bang Feng Chuan-ming Li Wen-Jing Wang Meng-Die Hu Department of Anesthesiology Nanan District People's Hospital of ChongqingChongqing 400060China Department of Breast and Thyroid Surgery Chongqing Bishan District Maternal and Child Health Care HospitalChongqing 402760China Department of Medical Imaging Chongqing University Central HospitalChongqing 400014China

Foot reflexology is a non-invasive and safe complementary therapy that works by massaging the reflex zones of the feet and exerts systemic or whole-body regulation through meridian nerve *** therapy is commonly used in the treatment of various conditions such as autism and Parkinson's ***,there is limited reporting on the use of foot reflexology therapy for infants with sensorineural hearing loss(SNHL).Currently,there is no definitive conclusion on how foot reflexology therapy can influence *** editorial holds some guiding significance regarding this clinical *** aim is to present physiological evidence of how foot reflexology therapy can impact infants with SNHL,thereby enhancing clinician’s awareness of foot reflexology in treating infants with SNHL.

关键词： Foot reflexology Sensorineural Hearing Loss Future perspectives Limitations Neural conduction

Chaotic Motion in a Harmonically Excited Soliton System

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Communications in Theoretical Physics 2006年第1X期46卷 1-4页

作者： YU jun ZHANG Wei-jun gao Xiao-ming Laboratory of Environmental Spectroscopy Anhui Institute of Optics and Fine Mechanics the Chinese Academy of Sciences Hefei 230031 China Department of Physics Shaoxing University Shaoxing 312000 China Graduate School of the Chinese Academy of Sciences Beijing 100049 China

The influence of a soliton system under an external harmonic excitation is considered. We take the compound KdV-Burgers equation as an example, and investigate numerically the chaotic behavior of the system with a periodic forcing. Different routes to chaos such as period doubling, quasi-periodic routes, and the shapes of strange attractors are observed by using bifurcation diagrams, the largest Lyapunov exponents, phase projections and Poincaré maps.

关键词： soliton system compound KdV-Burgers equation chaos

Cloaking Region Based Passenger Privacy Protection in Ride-Hailing Systems

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Journal of Computer Science & Technology 2020年第3期35卷 629-646页

作者： Yubin Duan Guo-Ju gao ming-jun Xiao Jie Wu Department of Computer and Information Sciences Temple UniversityPennsylvania 19122U.S.A. School of Computer Science and Technology University of Science and Technology of ChinaHefei 230036China

With the quick development of the sharing economy,ride-hailing services have been increasingly popular *** the service provides convenience for users,one concern from the public is whether the location privacy of passengers would be *** providers(SPs)such as Didi and Uber need to acquire passenger and driver locations before they could successfully dispatch passenger *** protect passengers’privacy based on their requirements,we propose a cloaking region based order dispatch *** our scheme,a passenger sends the SP a cloaking region in which his/her actual location is not *** trade-off of the enhanced privacy is the loss of social welfare,i.e.,the increase in the overall pick-up *** optimize our scheme,we propose to maximize the social welfare under passengers’privacy *** investigate a bipartite matching based approach.A theoretical bound on the matching performance under specific privacy requirements is *** passengers’privacy,we allow drivers to set up their maximum pick-up distance in our extended *** extended scheme could be applied when the number of drivers exceeds the number of ***,the global matching based scheme does not consider the interest of each individual *** passengers with low privacy requirements may be matched with drivers far from *** this end,a pricing scheme including three strategies is proposed to make up for the individual loss by allocating discounts on their riding *** experiments on both real-world and synthetic datasets show the efficiency of our scheme.

关键词： order dispatch pricing privacy ride-hailing

穴盘育苗基质的养分供应对蔬菜幼苗生长的影响

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山东农业大学学报（自然科学版） 2002年第4期33卷 442-447页

作者：李祥云赵明高峻岭于秋华宋朝玉朱培生青岛市农业科学研究所山东青岛266100

利用草炭、蛭石、珍珠岩为原料的育苗基质 ,运用正交试验设计 ,加入不同浓度的氮、磷、钾肥料 ,进行了番茄、黄瓜、茄子和甜椒穴盘育苗研究。结果表明 ,不同施肥品种与施肥量对果菜类蔬菜幼苗生长的影响具有显著差异 ,施用磷肥与供试 4... 详细信息

利用草炭、蛭石、珍珠岩为原料的育苗基质 ,运用正交试验设计 ,加入不同浓度的氮、磷、钾肥料 ,进行了番茄、黄瓜、茄子和甜椒穴盘育苗研究。结果表明 ,不同施肥品种与施肥量对果菜类蔬菜幼苗生长的影响具有显著差异 ,施用磷肥与供试 4种蔬菜幼苗株高和干物重增长的相关性达到显著或极显著水平 ,是培育优质壮苗的重要营养元素 ;氮、磷、钾肥料配合施用 ,是培育优质壮苗的关键。供试穴盘育苗混合基质中的最佳N、P2 O5、K2 O施肥量分别为番茄 0 .2、0 .4、0 .2kg m3,黄瓜 0 .8、0 .2、0 .1kg m3,茄子 0 .8、0 .4、0 .2kg m3,甜椒 0 .4、0 .4、0 .4kg m3。

关键词：穴盘育苗养分供应蔬菜幼苗生长育苗基质肥料施用

Microstructure, mechanical and biodegradable properties of a Mg–2Zn–1Gd–0.5Zr alloy with different solution treatments

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Rare Metals 2019年第6期38卷 532-542页

作者： jun-Xiu Chen ming gao Li-Li Tan Ke Yang Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China

Solution treatment is a useful way to improve the degradation resistance of Mg *** this work,effects of solution treatment temperature on mechanical and biodegradable properties of an extruded Mg–2Zn–1Gd–0.5Zr alloy were *** analysis,tensile test, three-point bending test, immersion test and electrochemical test were *** results showed that increasing solution temperature decreases the mechanical properties of the ***, three-point bending test revealed that the solution-treated alloy at 510 ℃ could maintain 95% of its maximum bending force(Fmax) during the 28-day immersion *** treatment at 510 ℃ for 5 h, all the second phases were dissolved into the alloy, the galvanic corrosion was inhibited, and the alloy exhibited good corrosion resistance with a corrosion rate of 0.35 mm·year-1 in Hank’s solution.

关键词： Mg alloy Solution treatment Microstructure Mechanical property Biodegradable property

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运动皮层的功能磁共振成像研究

实用放射学杂志 2003年第12期19卷 1073-1076页

作者：居胜红陈峰郑凯尔季倩杨天明滕皋军东南大学附属中大医院放射科东南大学附属中大医院神经外科东南大学附属中大医院放射科江苏南京210009

目的　用MR血氧水平依赖性成像技术（BOLD）研究正常人及癫痫、脑肿瘤患者对指运动皮层的功能磁共振成像（fMRI）。方法　 3 4例受试者 ,其中 8例正常志愿者 ,2 0例癫痫患者 ,6例脑肿瘤患者 ,行右手、左手对指运动共 43次 ,采用BOLD... 详细信息

目的　用MR血氧水平依赖性成像技术（BOLD）研究正常人及癫痫、脑肿瘤患者对指运动皮层的功能磁共振成像（fMRI）。方法　 3 4例受试者 ,其中 8例正常志愿者 ,2 0例癫痫患者 ,6例脑肿瘤患者 ,行右手、左手对指运动共 43次 ,采用BOLD技术进行相应脑功能区成像。结果　所有受试者均能在MR脑功能检查中表现出局部脑功能活动区规律的信号时间变化曲线 ,并得以清晰成像。功能区附近的占位病变可造成局部功能区的移位和缩小等改变 ,原发性癫痫患者未见有对指运动功能区的明显改变。结论　BOLD -fMRI在活体人脑对指运动的功能区定位方面是一个有效的方法。对需实施手术的颅内占位病变进行BOLD -fMRI检查对指导手术有价值。需改进癫痫患者的脑功能研究 ,进行更有效的相关功能刺激

关键词：磁共振成像脑运动皮层

Probabilistic Teleportation of an Unknown One-Particle State by a Three-Particle General W State

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Communications in Theoretical Physics 2007年第4期47卷 625-628页

作者： XIU Xiao-ming DONG Li gao Ya-jun Department of Physics Bohai University Jinzhou 121000 China

Two schemes for teleporting an unknown one-particle state are proposed when a general W state is utilized as quantum channel. In the first scheme, after the sender （Alice） makes a Bell-state measurement on her particles, the recipient （Bob） performs a Von Neumann measurement and introduces an auxiliary particle, and carries out a unitary transformation on his particle and the auxiliary particle, and performs a Von Neumann measurement on the auxiliary particle to confirm whether the teleportation succeeds or not. In the second scheme, the recipient （Bob） does not need to perform the first Von Neumann measurement or introduce the auxiliary particle, which is necessary in the first scheme. It is shown that the maxima/probabilities of successful teleportation of the two schemes are identical if the recipient （Bob） performs an appropriate unitary transformation and adopts a proper particle on which he recovers the quantum information of state to be teleported.

关键词： quantum information probabilistic teleportation entanglement general W state

Energy consumption of electrooxidation systems with boron-doped diamond electrodes in the pulse current mode

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International Journal of Minerals,Metallurgy and Materials 2013年第1期20卷 106-112页

作者： jun-jun Wei Xu-hui gao Li-fu Hei Jawaid Askari Cheng-ming Li Institute of Advanced Materials and Technology University of Science and Technology Beijing Institute of Manufacturing Engineering National University of Sciences & Technology (NUST)

A pulse current technique was conducted in a boron-doped diamond （BDD） anode system for electrochemical waste- water treatment. Due to the strong generation and weak absorption of hydroxyl radicals on the diamond surface, the BDD elec- trode possesses a powerful capability of electrochemical oxidation of organic compounds, especially in the pulse current mode. The influences of pulse current parameters such as current density, pulse duty cycle, and frequency were investigated in terms of chemical oxygen demand （COD） removal, average current efficiency, and specific energy consumption. The results demon- strated that the relatively high COD removal and low specific energy consumption were obtained simultaneously only if the current density or pulse duty cycle was adjusted to a reasonable value. Increasing the frequency slightly enhanced the COD re- moval and average current efficiency. A pulse-BDD anode system showed a stronger energy saving ability than a constant-BDD anode system when the electrochemical oxidation of phenol of the two systems was compared. The results prove that the pulse current technique is more cost-effective and more suitable for a BDD anode system for real wastewater treatment. A kinetic analysis was presented to explain the above results.

关键词： diamond fihlls boron doping electrochemical oxidation hydroxyl radicals energy consumption wastewater treat- ment