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Fluctuation with dust of de Sitter ground state of scalar-tensor gravity

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Science China(Physics,Mechanics & Astronomy) 2014年第3期57卷 411-417页

作者： TANG YanKe ZHANG HongSheng CHEN ChiYi li xinzhou Department of Physics Dezhou University Shandong Provincial Key Laboratory of Functional Macromolecular Biophysics Dezhou University Center for Astrophysics Shanghai Normal University State Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of Sciences Hangzhou Normal University Shanghai United Center for Astrophysics Shanghai Normal University

An exact de Sitter solution of scalar-tensor gravity is found in our recent work, in which the non-minimal coupling scalar is rolling along a non-constant potential. Based on this solution, a dust-filled FRW universe is explored in frame of scalar-tensor gravity in this article. The effective dark energy induced by the sole non-minimal scalar can be quintessence-like, phantom-like, and more significantly, can cross the phantom divide. The rich and varied properties of scalar-tensor gravity even with only one scalar is shown.

关键词： scalar tensor gravity de Sitter space dark energy phantom divide

Detection of CK20mRNA in peripheral blood of pancreatic cancer and its clinical significance

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World Journal of Gastroenterology 2005年第7期11卷 1023-1027页

作者： Yun-liZhang Jian-GuoFeng Jian-MinGou li-xinzhou PingWang DepartmentofHepato-Pancreatico-BilliarySurgery ZhejiangCancerHospitalHangzhou310022ZhejiangProvinceChina ZhejiangCancerInstitute Hangzhou310022ZhejiangProvinceChina

AIM: To detect the expression of CK20mRNA in peripheral blood of Pancreatic cancer and evaluate its clinical ***: Expression of CK20mRNA in peripheral blood was detected by fluorogenic qualitative reverse transcription-polymerase chain reaction (RT-PCR) in 40cases of pancreatic cancer at the night before operation,in 5 cases of benign pancreatic diseases, in 5 cases of healthy individuals. The relationships were investigated between CK20mRNA expression and the clinicopathological variables, and clinical follow-up outcome in those patients with pancreatic cancer having undergone radical ***: Of the 40 patients with pancreatic cancer, 23(57.5%) cases were positive for CK20mRNA ***20mRNA expression was significantly correlated with lymphatic metastasis (P = 0.008), histopathological grading (P = 0.009), and pathological stage (P = 0.021);there was no significant correlation between CK20mRNA expression and age, gender, tumor diameter, and depth of invasion. The cumulative metastasis rates of patients with CK20mRNA expression were higher than those of patients with no CK20mRNA expression within 6 mo (34.7%vs5.9%, P= 0.043) or 12 mo (73.9% vs35.3%, P= 0.02)after operation. CK20mRNA expression in peripheral blood of pancreatic cancer indicated poorer prognosis. The survival rate of patients with CK20mRNA expression was lower than that of patients with negative CK20mRNA expression (Log-Rank = 13.31, P = 0.0003).CONCLUSION: CK20mRNA is a sensitive and specific molecular marker for the detection of micrometastasis in peripheral blood of patients with pancreatic cancer. The CK20mRNA expression in peripheral blood is correlated with biological characteristic of pancreatic cancer. It can help to predict the prognosis of pancreatic cancer after operation, and to determine which patient will benefit from aggressive adjuvant therapies.

关键词： CK20mRNA Peripheral blood Pancreatic cancer

A local Martian crustal field model: Targeting the candidate landing site of the 2020 Chinese Mars Rover

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Earth and Planetary Physics 2020年第4期4卷 420-428页

作者： xinzhou li ZhaoJin Rong JiaWei Gao Yong Wei Zhen Shi Tao Yu WeiXing Wan Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth Science University of Chinese Academy of SciencesBeijing 100049China Beijing National Observatory of Space Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China China University of Geosciences Wuhan 430074China

Unlike Earth,Mars lacks a global dipolar magnetic field but is dominated by patches of a remnant crustal magnetic *** 2021,the Chinese Mars Rover will land on the surface of Mars and measure the surface magnetic field along a moving path within the possible landing region of 20°W-50°W,20°N-30°*** scientific target of the Rover is to monitor the variation in surface remnant magnetic fields and reveal the source of the ionospheric *** accurate local crustal field model is thus considered necessary as a field *** we establish a local crust field model for the candidate landing site based on the joint magnetic field data set from Mars Global Explorer(MGS)and Mars Atmosphere and Volatile Evolution(MAVEN)data *** model is composed of 1,296 dipoles,which are set on three layers but at different buried *** application of the dipole model to the joint data set allowed us to calculate the optimal parameters of their *** calculated results demonstrate that our model has less fitting error than two other state-of-the art global crustal field models,which would indicate a more reasonable assessment of the surface crustal field from our model.

关键词： Mars remnant crustal field crustal field model dipole sources Chinese Mars mission

Development Status and Application Analysis of Vehicle to Grid (V2G)

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Journal of Donghua University(English Edition) 2019年第3期36卷 284-292页

作者： ZHOU Peng LUO Shiran li xinzhou liAO Qiangqiang Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai Engineering Research Center of Energy-Saving in Heat Exchange SystemsShanghai University of Electric PowerShanghai 200090China Faculty of Finance City University of MacaoMacao 999078China

With the shortages of resources,environmental pollution,climate change,and other issues becoming more and more serious,it is extremely urgent to vigorously develop new energy *** the cost of batteries decrease year by year,the production and quantity of sales of electric vehicles(EVs)in the world,especially in China,increased *** order to make vehicles to grid(V2G)technology better developed and applied in *** brief introduction to V2G is given at *** the development status and specific cases of V2G at home and abroad are ***,the problems that V2G may encounter during promotion and application in China are *** on the development of the United States and Japan,specific policy recommendations are given in line with the basic national conditions of China.

关键词： electric vehicles(EVs) vehicle to grid(V2G) energy storage(ES) application development status

A SIX-DIMENSIONAL COSMOLOGY SOLUTION WITH GUT AND MONOPOLE-INDUCED SPONTANEOUS COMPACTIFICATION

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Chinese Physics Letters 1987年第10期4卷 465-468页

作者： CAI Shengshan HU Sizhu li xinzhou XU Jianjun Department of Physics Fudan UniversityShanghai

In this paper,the authors present a cosmological solution of a six-dimensional Einstein-gauge unification theory to which is added a matter *** exact solution appears that cosmology of the very early universe may diff... 详细信息

关键词： universe cosmology gauge

Evaluating the driving comfort on urban self-luminous pavements based on human-machine interaction

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Journal of Traffic and Transportation Engineering(English Edition) 2023年

作者： Wentong Wang Wenxiu Jiao Aimin Sha xinzhou li Fan Zhang Wei Jiang Dongdong Yuan School of Highway， Chang'an University Key Laboratory of Special Area Highway Engineering， Ministry of Education， Chang'an University

Paving self-luminous roads in cities has social and environmental benefits， including relieving the pressure on urban power generation and improving energy security. Drivers perceive pavement brightness as an important indicator of driving comfort. In the current state of knowledge， a thorough association between drivers’ perceptions of comfort and driving brightness has not yet been demonstrated. In four districts of Xi’an， China， 67 urban road sections were first selected for night-time pavement illuminance measurements under different light environments， and night-time pavement illuminance zoning was completed. Optical parameters (pavement reflectance ratio， retro reflectance coefficient， chromaticity coordinates， and luminous pavement brightness) of self-luminous pavements were measured in the laboratory. Further， a self-luminous simulation road model was established using the DIALux Evo software. The visual signals of the driver (pupil diameter and obstacle gaze time) were collected and evaluated for comfort according to a human-machine interactive visual event acquisition system. Based on the association between driving brightness and respondents’ reported subjective perceptions in the survey， the acceptable rate， comfort level， and brightness detectable level limits were created. The results indicated that a significant visual difference between the three self-luminous roads (high， medium-high， and low illuminations) and the target obstacle exists. The comfort level， acceptability， and brightness perception levels first decreased and then increased with an increase in brightness. The results of this study will help guide the comfort evaluation of luminous pavements and further promote functional research on self-luminous pavements.

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ACCEPTABLE AXION IN SUSY SO10 GUT AND E_(8)^(x)E8 SUPERSTRING THEORIES

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Chinese Physics Letters 1986年第6期3卷 249-252页

作者： li xinzhou GU Minggao Department of Physics Fudan UniversityShanghai Department of PhysicsTongyi UniversityShanghai

We present an SUSY GUT model,in which the strong CP violation can be eliminated via the invisible axion *** show that any b1,1=0 model cannot use the entropy production mechanism,however,A2,A3,A4,A5,B2,B4,B5 and C2 in b1,11 case can *** an example,we present an A4 model in which axion are diluted efficiently by the entropy production and the fast proton decay is forbidden without requirement of discrete symmetry.

关键词： mechanism symmetry entropy

早全新世与未来10 ka后东亚区域气候变化对比:自然强迫和人类活动的影响

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第四纪研究 2020年第6期40卷 1611-1621页

作者：李新周刘晓东中国科学院地球环境研究所黄土与第四纪地质国家重点实验室陕西西安710061 中国科学院青藏高原地球科学卓越创新中心北京100101 中国科学院大学北京100049

以准两万年周期为特征的地球岁差参数变化所引起的太阳辐射变动是造成万年尺度亚洲季风气候变化的主要驱动力。现代地球近日点时间出现在冬季12月份,但在约1万年(10 ka)前的早全新世和未来10 ka后的未来,近日点时间均出现在夏季6月份,... 详细信息

以准两万年周期为特征的地球岁差参数变化所引起的太阳辐射变动是造成万年尺度亚洲季风气候变化的主要驱动力。现代地球近日点时间出现在冬季12月份,但在约1万年(10 ka)前的早全新世和未来10 ka后的未来,近日点时间均出现在夏季6月份,因而对北半球气候施以最强的岁差强迫。未来10 ka后气候除了受轨道改变引起太阳辐射变化强迫外,主要受人类活动排放温室气体影响。文章利用一个全球气候模式完成了早全新世、未来10 ka和现代(包括工业革命前)这3个时间段的一系列敏感性试验,对比检查了自然强迫和人类活动对东亚区域气候的可能影响。模拟结果表明:在仅有自然强迫时,与工业革命前相比,岁差引起的太阳辐射变化可造成早全新世及未来10 ka后东亚区域夏季变暖,冬季变冷,东亚夏季风和冬季风均显著增强。早全新世东亚区域夏季降水也明显增加,但因自然强迫下未来10 ka后温室气体浓度偏低,导致夏季降水出现减少现象。未来人类活动带来的温室气体浓度增加将引起地表温度显著增温,使东亚夏季风增强而冬季风减弱。在同时考虑自然强迫和人类活动影响后,东亚夏季降水进一步增加,未来10 ka后东亚夏季降水将较工业革命前增加9.87%,而早全新世只增加了2.66%。同时,在自然和人类共同作用下10 ka后东亚冬季风将减弱,而在仅有自然强迫的早全新世东亚冬季风却是增强的。这一研究说明,虽然未来10 ka后是岁差强迫最强盛时期,但人类活动可能会扰乱岁差尺度上东亚区域气候的自然演变规律,在未来气候预估中必须综合考虑自然强迫和人为因子共同影响。

关键词：人类活动自然强迫岁差尺度东亚季风区

The Dimensionality of Spacetime

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华东理工大学学报(自然科学版) 1990年第1期 111-111页

作者： li xinzhou Zhong Yu (Institute for Theoretical Physics)

There has been impressive progress in the investigation of the physical effects resulting from the presence of wormholes inasmuch as these geve rise to topologically changed configurations in quantum gravity. May be t... 详细信息

关键词：时空宇宙学维度蛀洞紧致化超弦