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崂山早白垩世高分异Ⅰ型花岗岩地球化学特征及岩石成因机制

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岩石矿物学杂志 2024年第4期43卷 821-846页

作者：杜娟于胜尧高翔宇蒋兴洲彭银彪纪文涛李传志中国海洋大学海洋高等研究院海洋地球科学学院海底科学与探测技术教育部重点实验室山东青岛266100 青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室山东青岛266237 山东理工大学资源与环境工程学院山东淄博255022

崂山花岗岩出露于胶东区域,目前对其花岗岩的类型划分、源区、成因仍存在争议,而对高分异花岗岩成因、演化过程尚缺乏研究。本文以崂山早白垩世花岗岩为研究对象,对其进行岩石学与岩相学、全岩主微量及稀土元素、锆石U-Pb定年与Lu-Hf同... 详细信息

崂山花岗岩出露于胶东区域,目前对其花岗岩的类型划分、源区、成因仍存在争议,而对高分异花岗岩成因、演化过程尚缺乏研究。本文以崂山早白垩世花岗岩为研究对象,对其进行岩石学与岩相学、全岩主微量及稀土元素、锆石U-Pb定年与Lu-Hf同位素分析、电子探针长石成分分析。LA-MC-ICP-MS锆石U-Pb测年结果表明,崂山石英二长岩、二长花岗岩、正长花岗岩、花岗斑岩成岩年龄分别为128.6±2.7 Ma、122.8±2.5 Ma~118.6±1.2Ma、121.5±2.7 Ma~121.3±1.2Ma和114.5±1.2 Ma,指示它们均为早白垩世岩浆活动产物。地球化学组成上表现为高硅富碱,不同程度的贫铝、镁、铁,富集轻稀土元素和Rb、Th、U,亏损Ba、Sr,显著Eu负异常。崂山花岗岩锆石εHf(t)值介于-21.0~-15.1之间,Hf同位素二阶段模式年龄t_(DM2)介于2 482~2 149 Ma之间。结合矿物学、岩石学和地球化学证据,石英二长岩、二长花岗岩为I型花岗岩,正长花岗岩、花岗斑岩为高分异I型花岗岩。结合胶东区域研究资料,认为崂山早白垩世高分异I型花岗岩是在古太平洋板块俯冲作用产生的伸展构造环境下,软流圈地幔来源的岩浆底侵,诱发下地壳物质部分熔融形成长英质岩浆,后期受到斜长石、钾长石、磷灰石等矿物分离结晶作用的控制,经历高程度的分异形成。

关键词：胶东地区高分异Ⅰ型花岗岩岩石成因岩浆分异古太平洋俯冲

一种基于Mellin变换的水声宽带相关模糊函数的快速算法

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海军工程大学学报 2000年第6期12卷 6-10页

作者：许稼蒋兴舟张静远海军工程大学兵器工程系湖北武汉430033

提出了一种基于Mellin变换的快速算法 ,其特点是在给定的某一时刻得到不同尺度下的变换结果 ,算法的运算量与待分析的时延成正比 ,而在固定时刻下的运算量为两个 2M点的FFT和一次 2M点复数乘法(M为待分析的尺度的个数 ) .该算法的优点... 详细信息

提出了一种基于Mellin变换的快速算法 ,其特点是在给定的某一时刻得到不同尺度下的变换结果 ,算法的运算量与待分析的时延成正比 ,而在固定时刻下的运算量为两个 2M点的FFT和一次 2M点复数乘法(M为待分析的尺度的个数 ) .该算法的优点是实时性好 ,且适合于水声信号领域尺度跨度小、尺度分析较细的特点 ,并给出了与直接法、CZT法的比较结果 .

关键词：宽带相关模糊函数 Mellin变换水声信号

Absence of BCS–BEC crossover in FeSe0.45Te0.55 superconductor

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Chinese Physics B 2024年第7期33卷 89-96页

作者：贾俊杰谷亚东殷超辉束英杰陈逸雯史聚民张杏陈浩苗泰民任晓琳梁波朱文培蔡能张丰丰张申金杨峰王志敏彭钦军许祖彦毛寒青刘国东任治安赵林周兴江 National Laboratory for Superconductivity Beijing National Laboratory for Condensed Matter PhysicsInstitute of Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Technical Institute of Physics and Chemistry Chinese Academy of Sciences Songshan Lake Materials Laboratory

In iron-based superconductor Fe（Se,Te）, a flat band-like feature near the Fermi level was observed around the Brillouin zone center in the superconducting state. It is under debate whether this is the evidence on the presence of the BCS–BEC[Bardeen–Cooper–Schrieffer（BCS）, Bose–Einstein condensation（BEC）] crossover in the superconductor. High-resolution laser-based angle-resolved photoemission measurements are carried out on high quality single crystals of FeSe0.45Te0.55superconductor to address the issue. By employing different polarization geometries, we have resolved and isolated the dyz band and the topological surface band, making it possible to study their superconducting behaviors separately. The dyz band alone does not form a flat band-like feature in the superconducting state and the measured dispersion can be well described by the BCS picture. We find that the flat band-like feature is formed from the combination of the dyz band and the topological surface state band in the superconducting state. These results reveal the origin of the flat band-like feature and rule out the presence of BCS-BEC crossover in Fe（Se,Te） superconductor.

关键词： FeSe_(0.45)Te_(0.55) ARPES electronic structure superconducting gap BCS-BEC crossover

广西大瑶山隆起宝山铜矿区斑岩体锆石U-Pb定年及其地质意义

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桂林理工大学学报 2015年第4期35卷 766-773页

作者：蒋兴洲康志强许继峰冯佐海熊松泉吴佳昌桂林理工大学地球科学学院广西桂林541004 中国科学院广州地球化学研究所同位素地球化学国家重点实验室广州510640

苍梧县宝山铜矿位于大瑶山隆起中南部,其成矿作用与燕山晚期石英斑岩体密切相关。运用LA-(MC)-ICP-MS锆石U-Pb同位素定年技术,测得矿区花岗斑岩年龄为94.8±0.6 Ma(MSWD=0.17),含矿石英斑岩年龄为93.9±0.4 Ma(MSWD=2.5),二者形成时代... 详细信息

苍梧县宝山铜矿位于大瑶山隆起中南部,其成矿作用与燕山晚期石英斑岩体密切相关。运用LA-(MC)-ICP-MS锆石U-Pb同位素定年技术,测得矿区花岗斑岩年龄为94.8±0.6 Ma(MSWD=0.17),含矿石英斑岩年龄为93.9±0.4 Ma(MSWD=2.5),二者形成时代均为晚白垩世。宝山铜矿具备斑岩型铜矿部分特征,推测矿体形成时代与含矿石英斑岩体一致。大瑶山隆起区内燕山晚期斑岩体中普遍发育Cu-Mo-Au-Ag等金属成矿,可能与华南中生代晚期大规模成矿事件相对应。

关键词：花岗斑岩含矿石英斑岩 LA-(MC)-ICP-MS 锆石U-Pb年龄宝山铜矿大瑶山广西

DF140-CS型摊铺机的调整及维修、保养技术

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黑龙江交通科技 2003年第1期26卷 54-55,57页

作者：王海波姜兴洲敖国臣龙建路桥股份有限公司第三工程处

对摊铺机的调整及维修、保养做了阐述 ,并针对施工中机械出现的一些故障做了分析。

关键词： DF140-CS型摊铺机调整维修保养故障分析公路工程施工机械

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主动声纳探测距离预报仿真研究(英文)

系统仿真学报 2003年第9期15卷 1304-1306,1310页

作者：何心怡蔡志明林建域蒋兴舟黄海宁海军工程大学中国科学院声学所北京100080 中国科学院声学所

声纳探测距离受水文条件的影响是很大的,如声速梯度、海况、海底底质等。文中研究主动声纳探测距离预报技术,以声纳方程作为主动声纳探测距离预报的理论依据,首先对海洋声学环境建立数学模型,仿真计算出与声纳探测距离预报有关的几个参... 详细信息

声纳探测距离受水文条件的影响是很大的,如声速梯度、海况、海底底质等。文中研究主动声纳探测距离预报技术,以声纳方程作为主动声纳探测距离预报的理论依据,首先对海洋声学环境建立数学模型,仿真计算出与声纳探测距离预报有关的几个参数:传播损失、混响级、潜艇目标强度,最后结合声纳的性能参数,预报出在不同海域水文条件下的探测距离。利用文中的方法对某型主动声纳探测距离进行预报,在不同水文条件下探测距离预报误差不大于10%。该项内容研究对于反潜战具有重大的意义。

关键词：探测距离主动声纳传播损失混响级目标强度系统仿真

Event-triggered shared lateral control for safe-maneuver of intelligent vehicles

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Science China(Information Sciences) 2021年第7期64卷 48-65页

作者： Yan jiang xinglong ZHANG Xin XU xing zhou Zhengzheng DONG College of Intelligence Science and Technology National University of Defense Technology

With the increasing number of cars, road traffic accidents have caused a lot of losses every year and human factors play an important role in many cases. Applying active safety assistance control or shared control techniques in intelligent vehicles is promising to reduce the number of traffic accidents. In this context, the dynamic optimization of the shared control policy and the smooth transitions of control authority between human drivers and intelligent driving systems are critical issues to be solved. Motivated by this,this paper proposes an event-triggered shared control approach for safe-maneuver of intelligent vehicles with online risk assessment. In the proposed approach, a Bayesian regularized artificial neural network(BRANN)is designed to predict vehicle trajectories and build a quantization function to assess the risk level owing to potential collision events. The shared controller dynamically optimizes the shared control policies between the human and the intelligent driving system via solving a model predictive control(MPC) problem. The predicted driving behaviors in the prediction horizon are pre-computed with a finite-horizon model predictor steering the predicted trajectories contributed by human driving. Moreover, smooth transitions back to human driving mode are realized via adding penalties on the shared control of the intelligent driving *** simulation scenarios in the PreScan environment, i.e., rear-end collision avoidance, lane-keeping and unskilled driving, are studied to test the effectiveness of the proposed approach. The simulation results,including the comparison with a linear quadratic regulator(LQR)-based shared controller, are reported,which show that the proposed approach can timely evaluate dangerous events and realize safe driving in terms of collision avoidance and lane-keeping. Also, the proposed approach outperforms the LQR-based shared controller in terms of smooth transitions.

关键词： trajectory prediction risk assessment shared lateral control model predictive control

Hierarchical Control of Ride Height System for Electronically Controlled Air Suspension Based on Variable Structure and Fuzzy Control Theory

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Chinese Journal of Mechanical Engineering 2015年第5期28卷 945-953页

作者： XU xing zhou Kongkang ZOU Nannan jiang Hong CUI Xiaoli School of Automotive and Traffic Engineering Jiangsu University School of Mechanical Engineering Jiangsu University School of Mechanical Engineering Hunan Institute of Technology

The current research of air suspension mainly focuses on the characteristics and design of the air spring. In fact, electronically controlled air suspension （ECAS） has excellent performance in flexible height adjustment during different driving conditions. However, the nonlinearity of the ride height adjusting system and the uneven distribution of payload affect the control accuracy of ride height and the body attitude. Firstly, the three-point measurement system of three height sensors is used to establish the mathematical model of the ride height adjusting system. The decentralized control of ride height and the centralized control of body attitude are presented to design the ride height control system for ECAS. The exact feedback linearization method is adopted for the nonlinear mathematical model of the ride height system. Secondly, according to the hierarchical control theory, the variable structure control （VSC） technique is used to design a controller that is able to adjust the ride height for the quarter-vehicle anywhere, and each quarter-vehicle height control system is independent. Meanwhile, the three-point height signals obtained by three height sensors are tracked to calculate the body pitch and roll attitude over time, and then by calculating the deviation of pitch and roll and its rates, the height control correction is reassigned based on the fuzzy algorithm. Finally, to verify the effectiveness and performance of the proposed combined control strategy, a validating test of ride height control system with and without road disturbance is carried out. Testing results show that the height adjusting time of both lifting and lowering is over 5 s, and the pitch angle and the roll angle of body attitude are less than 0.15°. This research proposes a hierarchical control method that can guarantee the attitude stability, as well as satisfy the ride height tracking system.

关键词： electronically controlled air suspension (ECAS) ride height body attitude hierarchical control

System-level simulation of microbolometer and read-out integrated circuit

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Science China(Technological Sciences) 2015年第5期58卷 907-915页

作者： CHEN Chao jiang YaDong ZHANG Long zhou Yun ZHENG xing School of Optoelectronic Information University of Electronic Science and Technology of China State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China

A method for system-level simulation between microbolometer designing and Read-Out Integrated Circuit(ROIC) was studied. Three-dimensional(3D) structure modeling of the microbolometer was built. Thermal capacity, thermal conductivity and resistance of the model were obtained from thermoelectric coupling Finite Element Method(FEM) based on the model. An electrical equipment circuit of microbolometer which contains these three parameters was established. By using Verilog-AMS language, the electrical equipment circuit was described as a reduced-order macro-model. Then, the reduced-order macromodel was compiled in cadence to form IP unit of microbolometer, which could be used and identified in cadence. Systemlevel simulation between microbolometer and ROIC was accomplished. Key performances of the device, including input and output characteristics, were obtained in simulation and verified by experimental results.

关键词： verified pixel Verilog histogram NETD accomplished Figure capacitance captured designing