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硬厚岩层下逆断层采动应力演化与断层活化特征

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煤炭学报 2015年第2期40卷 267-277页

作者：蒋金泉武泉林曲华山东科技大学矿山灾害预防控制重点实验室山东泰安271002 山东科技大学矿业与安全工程学院山东青岛266590

上覆硬厚岩层受逆断层切割后,工作面顶板运动、采动应力会有异常变化。采用三维数值计算方法,模拟分析了上、下盘工作面向逆断层推进过程中的采动应力演化特征、煤层顶板运动特征及断层活化规律,并采用工程实例进行了分析验证。研究表明... 详细信息

上覆硬厚岩层受逆断层切割后,工作面顶板运动、采动应力会有异常变化。采用三维数值计算方法,模拟分析了上、下盘工作面向逆断层推进过程中的采动应力演化特征、煤层顶板运动特征及断层活化规律,并采用工程实例进行了分析验证。研究表明:在逆断层切割作用下,上盘工作面围岩呈倒楔形,采动应力向底板深处、顶板高处转移,围岩应力集中程度大于下盘工作面。下盘工作面与上盘工作面相比,采动应力受工作面与断层距离的影响较大。巨厚岩浆岩及其下部岩层形成类似"杠杆"结构,造成煤层顶板的下沉和反弹。逆断层下盘工作面煤层直接顶断层带活化的可能性大于上盘工作面,高位岩浆岩断层带活化的可能性小于下盘工作面。下盘工作面与逆断层距离40 m时断层开始活化;上盘工作面与逆断层距离40 m时,煤层直接顶断层带开始活化,与逆断层距离30 m时高位岩浆岩断层带开始活化。

关键词：逆断层巨厚岩浆岩采动应力分布顶板运动断层活化

Desmoplakin and clinical manifestations of desmoplakin cardiomyopathy

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Chinese Medical Journal 2021年第15期134卷 1771-1779页

作者： Zhong-Yu Yuan Li-Ting Cheng Ze-Feng Wang Yong-quan wu Department of Cardiology Beijing Anzhen HospitalCapital Medical UniversityBeijing 100029China

Desmoplakin(DSP),encoded by the DSP gene,is the main desmosome component and is abundant in the myocardial *** are three DSP isoforms that assume the role of supporting structural stability through intercellular *** has been found that DSP regulates the transcription of adipogenic and fibrogenic genes,and maintains appropriate electrical conductivity by regulating gap junctions and ion *** is essential for normal myocardial development and the maintenance of its structural *** have suggested that DSP gene mutations are associated with a variety of hereditary cardiomyopathy,such as arrhythmia cardiomyopathy,dilated cardiomyopathy(DCM),left ventricular noncompaction,and is also closely associated with the Carvajal syndrome,Naxos disease,and erythro-keratodermia-cardiomyopathy syndrome with skin and heart *** structure and function of DSP,as well as the clinical manifestations of DSP-related cardiomyopathy were reviewed in this article.

关键词： Desmoplakin Desmosome Mutation Wnt Signaling Pathway Cardiomyopathy

Short-term effects of supplementary feeding with enteral nutrition via jejunostomy catheter on post-gastrectomy gastric cancer patients

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Chinese Medical Journal 2011年第20期124卷 3297-3301页

作者： wu quan YU Jian-chun KANG Wei-ming MA Zhi-qiang Department of General Surgery Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 China

Background Most gastric cancer patients who undergo gastrectomy develop malnutrition. It is, therefore, crucial to establish an effective means to provide nutrition for these patients. To perform home enteral nutrition （EN） to ensure adequate nutritional intake in gastric cancer patients, we placed a jejunostomy catheter during gastric surgery. Most patients showed improved nutritional status. Methods Twenty-nine inpatients at our hospital underwent radical gastrectomy and jejunostomy from December 2002 to December 2007 and were designated as the jejunostomy group, and 32 matched patients without a jejunostomy tube were designated as the tube-free group. The jejunostomy group was treated with EN from 72 hours to 3 months postoperatively. The tube-free group did not receive EN. Data including preoperative and postoperative body weight, body mass index （BMI）, nutrition risk screening （NRS） score, Karnofsky performance score （KPS）, and laboratory biochemical indicators were documented respectively and compared. Results Compared with preoperative week 1, both groups showed decreased body weight and BMI at 3 months postoperatively. The weight loss in the jejunostomy group （（7.1±3.3） kg） was significantly less than that in the tube-free group （（9.9±3.1） kg）. Similarly, BMI decreased by （2.4±1.0） kg/m2 in the jejunostomy group, which was significantly less than in the tube-free group （（3.2±0.9） kg/m2）. The number of patients with postoperative NRS 〉3 was decreased in the jejunostomy group, but was increased in the tube-free group, and this difference was significant. There were no significant differences between the two groups in total lymphocyte count, hemoglobin, albumin and prealbumin, and adverse drug effects. Conclusions Short-term （3 months） EN supplementation via jejunostomy tube can reduce the risk of malnutrition and weight loss, and improve tolerance of chemotherapy. Tube feeding is reliable for achieving these goals because it is not important whether or not the

关键词： malnutrition gastric cancer gastrectomy postoperative period jejunostomy catheter home enteral nutrition

MINIMIZING INTERMEDIATE MULTICAST ROUTING FOR DYNAMIC MULTI-HOP AD HOC NETWORKS

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Journal of Electronics(China) 2007年第3期24卷 412-416页

作者： Yu quan wu Kejun Luo Guoming Jin Yongxin The 61st Research Institute of General Staff Headquarters Beijing 100039 China Institute of Communication Engineering PLA University of Science and Technology Nanjing 210007 China Science and Technology Bureau of Jiangsu Province Nanjing 210003 China

A Minimizing Intermediate Multicast Routing protocol (MIMR) is proposed for dynamic multi-hop ad hoc networks. In MIMR,multicast sessions are created and released only by source nodes. In each multicast session process,the source node keeps a list of intermediate nodes and destinations,which is encapsulated into the packet header when the source node sends a multicast packet. Nodes receiving multicast packets decide to accept or forward the packet according to the list. Depending on topology matrix maintained by unicast routing,the shortest virtual hierarchy routing tree is con-structed by improved Dijkstra algorithm. MIMR can achieve the minimum number of intermediate nodes,which are computed through the tree. No control packet is transmitted in the process of mul-ticast session. Load of the network is largely decreased. Experimental result shows that MIMR is flexible and robust for dynamic ad hoc networks.

关键词： Ad hoc networks Multicast routing Unicast routing Topology matrix

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干旱遥感监测模型在中国冬小麦区的应用

农业工程学报 2010年第1期26卷 243-249,I0010页

作者：孙丽王飞吴全农业部规划设计研究院北京100125

温度植被干旱指数(TVDI)和植被供水指数(VSWI)由于其物理意义明确,且数据易于获取,因此成为近些年在遥感旱情监测中应用较多的两个模型。为更好地完成遥感监测任务,提高精度,以全国冬小麦主产区为研究区域,利用EOS/MODIS数据,构建两个... 详细信息

温度植被干旱指数(TVDI)和植被供水指数(VSWI)由于其物理意义明确,且数据易于获取,因此成为近些年在遥感旱情监测中应用较多的两个模型。为更好地完成遥感监测任务,提高精度,以全国冬小麦主产区为研究区域,利用EOS/MODIS数据,构建两个干旱指数模型,对2009年冬小麦作物主要生长时期进行干旱监测应用,并将其与不同深度土壤湿度进行相关分析、线性拟合比较及应用验证,认为两指数与10cm深度土壤湿度相关性较好,TVDI大部表现为极显著相关,VSWI的相关性表现差于TVDI。基于土壤湿度的遥感旱情监测,TVDI比VSWI更能体现区域旱情变化趋势,其优势更明显。

关键词：干旱遥感监测 MODIS数据温度植被干旱指数植被供水指数

Electromagnetic and Thermal Characteristics of Molybdenite Concentrate in Microwave Field

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Journal of Donghua University(English Edition) 2023年第6期40卷 600-609页

作者：蒋永林伍权 School of Metallurgical and Electrical Engineering Guizhou Normal UniversityGuiyang 550025China

In modern metallurgical industry,microwave thermal technique has many advantages as one efficient energy treatment in an electromagnetic form,such as internal self-generated heat,easy access to control a volumetric heating process,and consensus on cleanliness,convenience and high efficiency of energy *** permittivity and permeability of molybdenite concentrate were measured for a further discussion about its electromagnetic heating coupling.A bidirectional coupling physics field in numerical modeling was undertaken to evaluate the microwave absorption potential and dielectric heating performance of molybdenite concentrate by the multi-physics finite element *** electromagnetic morphology and the field distribution strength were described in the microwave reaction *** electromagnetic field strength and the dissipation coefficient induced by temperature variation were represented throughout the whole heat chamber and at key parts of *** temperature distribution was compared with that being obtained from a scenario by thermal conduction with a stable heat *** molybdenite concentrate would be heated at surrounding temperature up to 593℃for 10 min by microwave energy that was transmitted by a rectangular *** electron microscopy(SEM)patterns suggested that the polished and neat crystalline molybdenum trioxide(MoO_(3))products were achieved by the microwave heating *** superiority via utilizing microwave thermal technique is expounded in the preparation strategy for molybdenum oxide or molybdenum metal.

关键词： microwave energy temperature characterization thermal analysis molybdenum trioxide(MoO_(3))

Remote Sensing Survey of Grassland Resources and Study of Grass-livestock Balance in Hangjin Banner of Inner Mongolia

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Asian Agricultural Research 2015年第8期7卷 64-68页

作者： Terigele Yanhong XU Ying LI quan wu Land Survey and Planning Institute of Inner Mongolia Autonomous Region

The data of this paper mainly include statistics,field survey data and MODIS remote sensing image data. This paper estimates the aboveground biomass of grassland and theoretical livestock carrying capacity of natural grassland in Hangjin Banner and draws a grass- livestock balance table in accordance with the actual and theoretical livestock carrying capacity of natural grassland. Studies have shown that the grass and livestock balance is good in Hangjin Banner,and the overloading rate is 1. 5%; there was no overloading in 2010 and 2011.

关键词： Remote sensing monitoring Grass-livestock balance

The design and implementation of a ROACH2+GPU based correlator on the Tianlai dish array

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Research in Astronomy and Astrophysics 2019年第7期19卷 133-142页

作者： Chen-Hui Niu Qun-Xiong Wang David MacMahon Feng-quan wu Xue-Lei Chen Ji-Xia Li Hai-Jun Tian Guillaume Shippee Dan Werthimer Xiao-Ping Zheng College of Physical Science and Technology Central China Normal UniversityWuhan 430079China Key Laboratory for Computational Astrophysics National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China University of California Berkeley Campbell Hall 339Berkeley CA 94720USA College of Science China Three Gorges UniversityYichang 443002China School of Astronomy and Space Sciences University of Chinese Academy of SciencesBeijing 100049China Center of High Energy Physics Peking UniversityBeijing 100871China

A digital correlator is a crucial element in a modern radio *** this paper,we describe a scalable design for the correlator system of the Tianlai pathfinder array,which is an experiment dedicated to testing key technologies for conducting a 21cm intensity mapping *** correlator implements the FX design,which firstly performs a fast Fourier transform(FFT) including polyphase filter bank(PFB) computation using a Collaboration for Astronomy Signal Processing and Electronics Research(CASPER) Reconfigurable Open Architecture Computing Hardware-2(ROACH2) board,then computes cross-correlations by employing Graphics Processing Units(GPUs).The design has been tested both in laboratory and in actual observation.

关键词： instrumentation interferometers

Reflections and standing waves on the Tianlai cylinder array

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Research in Astronomy and Astrophysics 2021年第3期21卷 73-85页

作者： Ji-Xia Li Feng-quan wu Shi-Jie Sun Zi-Jie Yu Shi-Fan Zuo Ying-Feng Liu You-Gang Wang Cong Zhang Reza Ansari Peter Timbie Xuelei Chen National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Center for Astrophysics and Department of Astronomy Tsinghua UniversityBeijing 100084China IJC Lab CNRS/IN2P3&Universite Paris-Saclay15 rue Georges Cl´emenceau91405 OrsayFrance´ Department of Physics University of Wisconsin Madison1150 University AveMadison WI 53703USA Center of High Energy Physics Peking UniversityBeijing 100871China

In 21 cm intensity mapping,the spectral smoothness of the foreground is exploited to separate it from the much weaker 21 cm ***,the non-smooth frequency response of the instrument complicates this *** and standing waves generate modulations on the frequency *** we report the analysis of the standing waves in the bandpass of the signal channels of the Tianlai Cylinder *** Fourier transforming the bandpass into the delay time domain,we find various standing waves generated on the telescope.A standing wave with time delay at~142 ns is most clearly identified which is produced in the 15-meter feed *** also identify a strong peak at a shorter delay ofτ<50 ns,which may be a mix of the standing wave between the reflector and feed,and the standing wave on the 4 m intermediate frequency(IF)*** also show that a smoother frequency response could be partially recovered by removing the reflection-inducted ***,the standing wave on the antenna is direction-dependent,which poses a more difficult challenge for high precision calibration.

关键词： techniques:interferometric methods:data analysis