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Formation conditions and reservoir-forming models of the Ordovician buried hill reservoirs in the Jizhong depression

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地学前缘 2023年第1期30卷 229-241页

作者： ZHANG Ruifeng tian Jianzhang HUANG Yuanxin tian Ran REN Yi BIAN Yingying WANG Yuanjie chen Ling lu Shan PetroChina Huabei Oilfield Company Renqiu 062552China Exploration and Development Research Institute of PetroChina Huabei Oilfield Company Renqiu 062552China

The buried hill in the Jizhong depression contains abundant petroleum reserves and are important production *** Ordovician buried hill has restricted the discovery of new oil and gas exploration targets because of its strong reservoir heterogeneity and complex reservoir-controlling *** on a large volume of core,thin section,logging,seismic,and geochemical data and numerous geological analyses,the reservoir-forming conditions and modes were systematically analyzed to guide the exploration and achieve important breakthroughs in the Yangshuiwu and Wen an slope buried *** study revealed that three sets of source rocks of the third and fourth members of the Shahejie Formation from the Paleogene and Carboniferous-Permian were developed in the Jizhong depression,providing sufficient material basis for the formation of buried hill oil and gas *** reservoir control mechanism involving the three major factors of“cloud-karst-fault”was clarified,and karst cave,fracture fissure-pore,and cloud pore type reservoir models were established,thereby expanding the exploration *** by the superposition of multi-stage tectonic processes during the Indosinian,Yanshanian,and Himalayan,two genetic buried hill trap types of uplift-depression and depression-uplift were *** on the analysis of reservoir-forming factors of the Ordovician buried hill,three buried hill oil and gas reservoir-forming models were identified:low-level tectonic-lithologic composite quasi-layered buried hill,medium-level paleo-storage paleo-block buried hill,and high-level paleo-storage new-block buried *** evaluations indicate that the reservoir-forming conditions of the low-level tectonic-lithologic composite quasi-layered buried hill in the northern portion of the Jizhong depression are the most favorable and that the Sicundian and Xinzhen buried hills are favorable areas for future exploration.

关键词： Jizhong depression Yangshuiwu Ordovician reservoir type reservoir model

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Properties of Supersulphated Phosphogysum-slag Cement (SSC) Concrete

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Journal of Wuhan University of Technology(Materials Science) 2014年第1期29卷 109-113页

作者：丁沙水中和 chen Wei lu Jianxin tian Sufang State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology

Supersulphated phosphogysum-slag cement （SSC） is a newly developed non-burned cementitious material mainly composed of phosphogysum （PG） and ground granulated blast furnace slag （GGBFS）, with small amount of steel slag （SS） and clinker （CL）. SSC is a kind of environmentally-friendly cementitious material due to its energy-saving, low-carbon emission, and waste-utilization. We prepared concretes with supersulphated phosphogysum-slag cement, and studied the mechanical properties, micro- properties and resistance to chloride penetration of concrete in comparison with those of portland slag cement （PSC） and ordinary portland cement （OPC） concrete. The test results show that the compressive strength of SSC concrete can reach 38.6 MPa after 28 d, close to PSC concrete and OPC concrete. Microanalyses indicate that large quantities of ettringite and C-S-H, and little amount of Ca（OH）2 are generated during the hydration of SSC. The dense cement paste structure of SSC is formed by ettringite and C-S-H, surrounded unreacted phosphogysum. The property of resistance to chloride penetration of SSC concrete is better than PSC and OPC concrete due to the fact that SSC can form much more ettringite to solidify more Cl^-.

关键词： supersulphated phosphogysum-slag cement chloride penetration ettringite

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Leaching improvement of ceramic cores for hollow turbine blades based on additive manufacturing

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Advances in Manufacturing 2019年第4期7卷 353-363页

作者： Wei-Jun Zhu Guo-Qiang tian Yang lu Kai Miao Di-chen Li School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191People's Republic of China State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong UniversityXi'an 710049People's Republic of China School of Aeronautical Engineering Zhengzhou University of AeronauticsZhengzhou 450046People's Republic of China

The precision casting method based on aluminabased ceramic cores is one of the main techniques used to manufacture hollow turbine *** manufacturing(AM)technology provides an alternate solution to fabricating ceramic cores quickly and *** the complexity of the structure increases and the strength of the material improves,the leaching process of the cores becomes more *** study proposes a compound pore-forming method to increase the porosity of ceramic cores by adding a preformed-pore agent and materials that convert to easy-to-corrode *** preformed-pore agents(e.g.,carbon fibers)can be burned off during sintering to form pores before the leaching,and the easy-to-corrode phases(e.g.,CaCO3,SiO2,^-A12O3)can be leached firstly to form pores during the leaching *** pores formed in the aforementioned two stages increase the contact area of the cores and leaching solution,thus improving the leaching *** the current study,the additive amount of the preformed-pore agent was optimized,and the effect of the easy-to-corrode phases on the comprehensive properties of the cores was then *** on this,the corresponding model was established.

关键词： Alumina-based ceramic core Leaching Alkali solution Additive manufacturing(AM) Stereolithography

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AZ91 Magnesium Alloy/Porous Hydroxyapatite Composite for Potential Application in Bone Repair

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Journal of Materials Science & Technology 2016年第9期32卷 858-864页

作者： Bin chen Kai-Yang Yin tian-Feng lu Bing-Yi Sun Qing Dong Jing-xu Zheng chen lu zhan-Chun Li School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai 200240China Renji Hospital School of MedicineShanghai Jiao Tong UniversityShanghai 200127China

AZ91/HA composite was prepared by AZ91 magnesium alloy and porous HA using squeeze casting method. The microstructure and mechanical property of the AZ91/HA composite were studied. The results show that the molten AZ91 alloy completely infiltrated the preform without destroying the porous structure of the HA preform. The compressive strength of AZ91/HA composite increased significantly compared with that of the porous HA. The immersion test indicated that AzgI ahoy shows a lower corrosion resistance and is easier to be corroded in comparison with HA.

关键词： Biodegradable Magnesium alloy Porous HA Composite Squeeze casting

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A New Method for Searching Cubes and Its Application to 815-Round Trivium

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Journal of Systems Science & Complexity 2023年第5期36卷 2234-2254页

作者： LIU chen tian tian QI Wenfeng PLA Strategic Support Force Information Engineering University Zhengzhou 450001China

The cube attack proposed by Dinur and Shamir is one of the most important key-recovery attacks against *** division property based cube attacks have been extensively studied and significantly *** particular,the MILP modeling technique for the three-subset division property without unknown subset proposed by Hao,et *** EUROCRYPT 2020 and the new technique with nested monomial predictions proposed by Hu,et *** ASIACRYPT 2021 are best techniques to recover exact superpolies in division property based cube ***,at this state of the art,whether a superpoly can be recovered in division property based cube attacks is mainly decided by the scale of the superpoly,that is,the number of *** the choice for proper cubes corresponding to low-complexity superpolies is more critical *** effective cube construction methods were proposed for experimental cube attacks,but not applicable to division property based cube *** this paper,the authors propose a heuristic cube criterion and a cube sieve algorithm,which can be combined with the three-subset division property to recover a number of *** to815-round Trivium,the authors recovered 417 superpolies from 441 cubes obtained by our algorithm of sizes between 41 and *** success rate is 94.56%.There are 165 non-constant superpolies with degree less than *** order to demonstrate the significance of the new algorithm,the authors tested the best superpoly recovery technique at EUROCRYPT 2020 using random cubes of similar sizes on 815-round *** experimental result shows that no cube could be completely recovered within a given period of time because the superpolies for random cubes are too complex.

关键词： Cube attacks division property key-recovery attacks trivium

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Acoustomechanical constitutive theory for soft materials

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Acta Mechanica Sinica 2016年第5期32卷 828-840页

作者： Fengxian Xin tian Jian lu State Key Laboratory for Strength and Vibration of Mechanical Structures Xi’an Jiaotong University MOE Key Laboratory for Multifunctional Materials and Structures Xi’an Jiaotong University

Acoustic wave propagation from surrounding medium into a soft material can generate acoustic radiation stress due to acoustic momentum transfer inside the medium and material, as well as at the interface between the two. To analyze acoustic-induced deformation of soft materials, we establish an acoustomechanical constitutive theory by combining the acoustic radiation stress theory and the nonlinear elasticity theory for soft materials. The acoustic radiation stress tensor is formulated by time averaging the momentum equation of particle motion, which is then introduced into the nonlinear elasticity constitutive relation to construct the acoustomechanical constitutive theory for soft *** a specified case of soft material sheet subjected to two counter-propagating acoustic waves, we demonstrate the nonlinear large deformation of the soft material and analyze the interaction between acoustic waves and material deformation under the conditions of total reflection, acoustic transparency, and acoustic mismatch.

关键词： Acoustomechanical constitutive theory Acoustic radiation stress Soft material

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面向服务的水泥企业信息系统集成架构

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计算机系统应用 2017年第1期26卷 57-62页

作者：王少林田晨璐毛锡双魏仁政李程山东建筑大学济南250101 广西壮族自治区墙体材料改革办公室南宁530028

为满足水泥企业流程重组与业务协同对企业信息系统的要求,在充分考虑水泥企业的信息化现状的基础上,综合利用混合云的优势,以面向服务的方法构建了水泥企业信息系统应用集成架构,设计了一种针对大型水泥企业的服务划分算法,以移动服务... 详细信息

为满足水泥企业流程重组与业务协同对企业信息系统的要求,在充分考虑水泥企业的信息化现状的基础上,综合利用混合云的优势,以面向服务的方法构建了水泥企业信息系统应用集成架构,设计了一种针对大型水泥企业的服务划分算法,以移动服务和设备诊断检测服务为例详细阐述了服务实现的过程.以该应用集成架构为基础构建了某水泥企业应用集成平台,充分利用了云端资源及企业内部信息资源,实现了该水泥企业信息系统的应用集成、共享及远程访问,满足了该企业满足科学管理、流程优化、协同业务等信息化需求.

关键词：混合云 SOA 水泥企业应用集成架构

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Microseismic observations reveal that internal waves intensify seabed methane release

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Science China Earth Sciences 2024年第10期67卷 3186-3203页

作者： Zhaoyang tian Yonggang JIA Junjiang ZHU tian chen Hui WANG Chunsheng JI chengyu LIU Longyu lu Manchao HE Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering Ocean University of ChinaQingdao 266100China Frontiers Science Center for Deep Ocean Multispheres and Earth System Key Lab of Submarine Geosciences and Prospecting TechniquesMOE and College of Marine GeosciencesOcean University of ChinaQingdao 266100China Guangzhou Marine Geological Survey China Geological SurveyGuangzhou 511458China Shandong Earthquake Agency Jinan 250014China State Key Laboratory for Tunnel Engineering China University of Mining and Technology(Beijing)Beijing 100083China

Internal waves transport material and energy from the upper water column to the deep ocean, disturbing seabed sediments and resulting in phenomena such as seabed erosion and changes in topography. On the northern slope of the South China Sea and in many coastal margins worldwide, the zones with internal wave action closely overlap with areas where natural gas hydrates are present. However, due to significant differences in the spatial and temporal scales, understanding the influence of internal waves on methane releases from deep seabeds is challenging. In this study, in situ observations of seabed microseismicity and internal waves are conducted at water depths of 655 meters and 1450 meters in the Pearl River Canyon of the South China Sea. The microseismicity caused by internal waves and seabed methane releases is identified, and a method to establish the correlation between internal waves and seabed methane releases through the use of microseismic recordings is proposed, aiming to obtain direct observational evidence of internal waves intensifying seabed methane releases. The results show that internal waves and seabed methane releases generate significant microseismic signals, indicating the continuous influence of internal waves on the deep seabed of the northern slope of the South China Sea and revealing active methane release phenomena on the seabed. At both long and short time scales, internal waves increase the frequency of seabed methane releases by 4.2 times and 2.4 times, respectively, while also enhancing the intensity of these releases. These changes are influenced by the alterations in seabed flow velocity, pressure, and temperature that are induced by internal wave activities. This study emphasizes that microseismic signals are effective carriers of information for multiscale geological processes on seabeds and suggests that internal waves exacerbate marine geological hazards and contribute to global climate change by intensifying seabed methane relea

关键词： Internal waves Seabed methane release Microseismic observation Ocean bottom seismometer Northern slope of the South China Sea

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An autoencoder-based feature level fusion for speech emotion recognition

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Digital Communications and Networks 2024年第5期10卷 1341-1351页

作者： Peng Shixin chen Kai tian tian chen Jingying National Engineering Research Center for E-Learning National Engineering Laboratory for Educational Big DataCentral China Normal University

Although speech emotion recognition is challenging,it has broad application prospects in human-computer *** a system that can accurately and stably recognize emotions from human languages can provide a better user ***,the current unimodal emotion feature representations are not distinctive enough to accomplish the recognition,and they do not effectively simulate the inter-modality dynamics in speech emotion recognition *** paper proposes a multimodal method that utilizes both audio and semantic content for speech emotion *** proposed method consists of three parts:two high-level feature extractors for text and audio modalities,and an autoencoder-based feature *** audio modality,we propose a structure called Temporal Global Feature Extractor(TGFE) to extract the high-level features of the timefrequency domain relationship from the original speech *** that text lacks frequency information,we use only a Bidirectional Long Short-Term Memory network(BLSTM) and attention mechanism to simulate an intra-modal *** these steps have been accomplished,the high-level text and audio features are sent to the autoencoder in parallel to learn their shared representation for final emotion *** conducted extensive experiments on three public benchmark datasets to evaluate our *** results on Interactive Emotional Motion Capture(IEMOCAP) and Multimodal EmotionLines Dataset(MELD) outperform the existing ***,the results of CMU Multi-modal Opinion-level Sentiment Intensity(CMU-MOSI) are ***,experimental results show that compared to unimodal information and autoencoderbased feature level fusion,the joint multimodal information(audio and text) improves the overall performance and can achieve greater accuracy than simple feature concatenation.

关键词： Attention mechanism Autoencoder Bimodal fusion Emotion recognition

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基于Android的建筑设备物联网系统终端

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计算机系统应用 2016年第2期25卷 76-80页

作者：王少林魏仁政张来盈唐威田晨璐山东建筑大学信息与电气工程学院济南250101 山东黄金地产旅游集团有限公司济南250101

在建筑设备物联网系统环境下设计开发了基于Android平台的终端软件.建筑用电设备物联网系统应用层的软件开发难点在于其子系统(包括电梯、空调、消防、照明等系统)数量众多且接口标准、数据来源各不相同,不同子系统之间存在大量的异构数... 详细信息

在建筑设备物联网系统环境下设计开发了基于Android平台的终端软件.建筑用电设备物联网系统应用层的软件开发难点在于其子系统(包括电梯、空调、消防、照明等系统)数量众多且接口标准、数据来源各不相同,不同子系统之间存在大量的异构数据.本系统在Android平台上利用Event Bus类设计了基于事件驱动的软件架构方法,有效地降低各个功能模块之间的耦合性;在Android平台上通过调用Web Service技术间接访问远程服务器,解决了大量异构数据整合的问题.该客户端软件人机界面简洁、美观,可实现远程实时监控设备状态、修改配置信息等功能,具有复杂度高、可扩展性强等优势.该软件已应用于建筑设备物联网系统中,运行结果证明了该设计是有效、可行的.

关键词： Android平台建筑设备物联网事件驱动架构 WebService技术终端软件

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