Oxidation Kinetics of Aluminum Powders in a Gas Fluidized Bed Reactor in the Potential Application of Surge Arresting Materials

In this technical paper, the oxidation mechanism and kinetics of aluminum powders are discussed in great details. The potential applications of spherical aluminum powders after oxidation to be part of the surging arresting materials are discussed. Theoretical calculations of oxidation of spherical aluminum powders in a typical gas fluidization bed are demonstrated. Computer software written by the author is used to carry out the basic calculations of important parameters of a gas fluidization bed at different temperatures. A mathematical model of the dynamic system in a gas fluidization bed is developed and the analytical solution is obtained. The mathematical model can be used to estimate aluminum oxide thickness at a defined temperature. The mathematical model created in this study is evaluated and confirmed consistently with the experimental results on a gas fluidization bed. Detail technical discussion of the oxidation mechanism of aluminum is carried out. The mathematical deviations of the mathematical modeling have demonstrated in great details. This mathematical model developed in this study and validated with experimental results can bring a great value for the quantitative analysis of a gas fluidization bed in general from a theoretical point of view. It can be applied for the oxidation not only for aluminum spherical powders, but also for other spherical metal powders. The mathematical model developed can further enhance the applications of gas fluidization technology. In addition to the development of mathematical modeling of a gas fluidization bed reactor, the formation of oxide film through diffusion on both planar and spherical aluminum surfaces is analyzed through a thorough mathematical deviation using diffusion theory and Laplace transformation. The dominant defects and their impact to oxidation of aluminum are also discussed in detail. The well-controlled oxidation film on spherical metal powders such as aluminum and other metal spherical powders can potentially become an important part of switch devices of surge arresting materials, in general.

Model of Universe as Described by Dynamic Universe Model

In this paper we will see the model of Universe according to Dynamic Universe Model of Cosmology by visualizing various processes that are happening in the Universe as per experimental evidences. For simplifying the matter here, we will see in part 1: about the Galaxy life cycle, where the birth and death of Galaxies discussed. Probably Universe gives guidance for the movement of Galaxies. We call this Part 1: Thinking and Reproducing Universe or Mindless Universe? (Galaxy life cycle). We see every day Sun, Stars, Galaxies etc., dissipating enormous energy in the form of radiation by the way of fusion of Hydrogen to helium. So after sometime all the Hydrogen is spent and Universe will die, is it not? … Dynamic Universe Model says that the energy in the form of electromagnetic radiation passing grazingly near any gravitating mass changes in frequency and finally will convert into neutrinos (mass). Hence Dynamic Universe Model proposes another process where energy will be converted back into matter and the cycle energy to mass to energy continues, sustaining the Universe to maintain this present status for ever in this form something like a Steady state model without any expansion. This we will see in Part 2: Energy - Mass - Energy Cycle. After converting energy into mass “how various elements are formed and where they are formed?” will be next logical question. Dynamic Universe Model says that these various particles change into higher massive particles or may get bombarded into stars or planets and various elements are formed. Here we bifurcate the formation of elements into 6 processes. They are for Elementary particles and elements generated in frequency changing process, By Cosmic rays, By Small stars, By Large Stars, By Super Novae and Manmade elements By Neutron Stars. This we will discuss in Part 3: Nucleosynthesis.

Means of Choice for Interactive Management of Dynamic Geometry Problems Based on Instrumented Behaviour

Our paper presents a project that involves two research questions: does the choice of a related problem by the tutorial system allow the problem solving process which is blocked for the student to be restarted? What information about learning do related problems returned by the system provide us? We answer the first question according to the didactic engineering, whose mode of validation is internal and based on the confrontation between an a priori analysis and an a posteriori analysis that relies on data from experiments in schools. We consider the student as a subject whose adaptation processes are conditioned by the problem and the possible interactions with the computer environment, and also by his knowledge, usually implicit, of the institutional norms that condition his relationship with geometry. Choosing a set of good problems within the system is therefore an essential element of the learning model. Since the source of a problem depends on the student’s actions with the computer tool, it is necessary to wait and see what are the related to problems that are returned to him before being able to identify patterns and assess the learning. With the simultaneity of collecting and analysing interactions in each class, we answer the second question according to a grounded theory analysis. By approaching the problems posed by the system and the designs in play at learning blockages, our analysis links the characteristics of problems to the design components in order to theorize on the decisional, epistemological, representational, didactic and instrumental aspects of the subject-milieu system in interaction.

THE DYNAMICAL BEHAVIOR OF FULLY DISCRETE SPECTRAL METHOD FOR NONLINEAR SCHRODINGER EQUATION WITH WEAKLY DAMPED

Nonlinear Schrodinger equation (NSE) arises in many physical problems. It is a very important equation. A lot of works studied the wellposed, the existence of solution of NSE etc. And there are many works studied the numerical methods for it. Recently, since the development of infinite dimensional dynamic system the dynamical behavior of NSE has been investigated. The paper [1] studied the long time wellposedness, the existence of universal attractor and the estimate of Lyapunov exponent for NSE with weakly damped. At the same time it was need to study the large time new computational methods and to discuss its convergence error estimate, the existence of approximate attractors etc. In this pape we study the NSE with weakly damped (1.1). We assume,where 0【λ【2 is a constant. If we wish to construct the higher accuracy computational scheme, it will be difficult that staigh from the equation (1.1). Therefore we start with (1. 4) and use fully discrete Fourier spectral method with time difference to

Temporal and spatial evolution of surface sediments characteristics in the Dagu River estuary and their dynamic response mechanism

Based on the 39 surface sediment samples collected in the flood season and the dry season in 2012 respectively and the measured hydrological data in October 2012, the sediment grain size characteristics has been analyzed and the response mechanism of surface sediments to estuarine hydrodynamics was revealed by calculating the range of waves and tidal currents. The results show that:(1) The grain size of the surface sediment samples decreased gradually from land to sea in the flood season. The fine sediment was redistributed under marine hydrodynamics in the dry season and the sediments showed coarser tendency ingeneral;(2) tidal current stirring sediment was very obvious in Dagu River estuary area, and wave stirring sediments mainly occurred in the tidal flat area and estuary sand bar area;(3) in the flood season, surface sediment sat the estuary were transported towards south and southeast. In the dry season, surface sediments were transported towards southwest at the north area of Jiaozhou Bay Bridge, and sediments were transported towards northeast area at the south of Jiaozhou Bay Bridge.

Advancement in Wide Area Monitoring Protection and Control Using PMU’s Model in MATLAB/SIMULINK

A big step forward to improve power system monitoring and performance, continued load growth without a corresponding increase in transmission resources has resulted in reduced operational margins for many power systems worldwide and has led to operation of power systems closer to their stability limits and to power exchange in new patterns. These issues, as well as the on-going worldwide trend towards deregulation of the entire industry on the one hand and the increased need for accurate and better network monitoring on the other hand, force power utilities exposed to this pressure to demand new solutions for wide area monitoring, protection and control. Wide-area monitoring, protection, and control require communicating the specific-node information to a remote station but all information should be time synchronized so that to neutralize the time difference between information. It gives a complete simultaneous snap shot of the power system. The conventional system is not able to satisfy the time-synchronized requirement of power system. Phasor Measurement Unit (PMU) is enabler of time-synchronized measurement, it communicate the synchronized local information to remote station.

耳硬化症CT表现

目的探讨耳硬化症的高分辨率CT(HRCT)表现及其应用价值。资料与方法回顾性分析2000年11月至2004年9月经手术证实的耳硬化症24例,均行水平位及冠状位HRCT扫描,层厚、层间距1mm,窗位700HU,窗宽4000HU。结果左耳13例,右耳12例CT显示前庭窗前方低密度影;左耳7例,右耳7例耳蜗周围可见低密度影;6例镫骨底板增厚,其中左侧3例,右侧3例;5例镫骨底板塌陷,左侧2例,右侧3例;4例前庭窗扩大,左侧2例,右侧2例;6例前庭窗狭窄,左侧2例,右侧4例。结论耳硬化症好发于年轻女性,病变累及耳囊各部,前庭窗前方近鼓岬处为好发部位,活动期表现为密度减低影,前庭窗状似“扩大”,底板“塌陷”,成熟期表现为前庭窗变窄,甚至封闭;耳蜗周围尤其环绕底转常可发现异常病灶,“斑点”状或“弧线”样,典型表现为“双环征”。CT可以清晰地显示病变范围及其程度,对明确诊断及随诊有很大帮助。

酷似肝血管瘤的不典型肝癌CT诊断

目的总结分析CT表现酷似肝血管瘤的不典型肝癌诊断要点及误诊原因,以期提高非典型肝癌的CT诊断水平。方法回顾分析我院6年间误诊为肝血管瘤的不典型肝癌,均经病理或随访证实,共14例。经全肝CT平扫,然后于注射造影剂后30秒、60秒、2分钟、10分钟、25分钟后进行肝脏螺旋扫描,部分患者延时1小时扫描。结果平扫时, 26 /30个表现为不均匀低密度病灶, 4 /30个表现为均匀的低密度病灶,增强扫描30秒、60秒表现明显强化或边缘不规则强化,强化区逐步向病灶中心推进; 2分钟、10分钟表现为高密度或略高密度; 25分钟表现为等密度或低密度。1 /30个病灶延时1小时后扫描表现为等密度病灶。结论酷似肝血管瘤CT表现的肝癌易误诊,螺旋CT多期动态扫描,结合B超、MRI等综合影像检查,AFP定量及临床随访对诊断有重要意义。

仿生双相磷酸钙生物陶瓷支架的Micro-CT评价

[目的]体外用MicroCT(Microcomputedtomography)图像对仿生双相磷酸钙生物陶瓷支架的三维结构进行计算机重建和评价。[方法]犬股骨头的松质骨样本行MicroCT扫描,提取图像信息;三维凝胶叠层成型法制备出具有仿骨小梁结构的双相磷酸钙仿生生物陶瓷支架。随后用MicroCT对支架扫描,以三维结构参数对支架和松质骨样本作三维评价和比较。三维参数包括骨体积分数(BoneVolumeFraction,BVF,BV/TV)、骨表面积体积比(Bonesurface/bonevolumeratio,BS/BV)、骨小梁厚度(Trabecularthickness,TbTh)、骨小梁数目(Trabecularnumber,TbN)、骨小梁间隙(Trabecularspacing,TbSp)、结构模型指数(StructureModelIndex,SMl)和各向异性程度(degreeofanisoropy,DA)。[结果]与犬股骨头松质骨样本相比,用本方法制备出的BCP支架具有相似的三维空间结构,二者的BV/TV、TbTh、TbN无显著差别(P>0.05)。小梁结构呈板状模型。[结论]本研究制备的BCP多孔支架的小梁具有一定的取向性,力学强度和良好的适于血管长入的空间结构。

Dynamic Analysis of Soil Structure Interaction Effect on Multi Story RC Frame

In this study dynamic analysis of Soil Structure Interaction (SSI) effect on multi story reinforced concrete (RC) frame founded on soft soil (flexible base) is made and compared with fixed base. Two model 2D RC frames with 7 and 12 story are selected for analysis. Winkler Spring and half space direct method models are used for flexible base for the frames founded on two types of soft soils with shear velocity Vs < 150 m/s Asper Seismic Codes of Chinese GB50011-2010 Soil IV and Ethiopian ES8-2015 soil D. The frames are subjected to strong ground motion matched to response spectrums of soft soil of Chinese GB50011-2010 and Ethiopian ES8-2015 for linear time history analysis. The dynamic analysis result shows Spring and Fixed base mass participation 90% reaches in 2 or 3 modes but in direct method 11 to 30 modes for story 12 and 7 respectively. However, both flexible base models have bigger fundamental period of vibration and inter story drift but smaller base shear than fixed base. In addition, within the flexible base models the inter-story drift, second order effect (P-Δ) and Story shear distribution are different along the height of frames. The spring model shows larger Story drift and second order effect (P-Δ) at the bottom of Story for both soft soils types. On the other hand, half space direct method model indicates value reverse to spring model;it gives bigger Story drift and P-Δ effect in the top stories than fixed base. Finally, this study concludes that base shear reduction due to SSI may not be always beneficial. Because the gravity load is constant in both fixed and flexible bases that cause bigger P-Δ effect at the bottom stories due to increase, inter story drift and decrease story shear in flexible base.

多层螺旋CT肝脏灌注测量在肝硬化中的初步应用

目的探讨多层螺旋CT肝脏灌注测量在肝硬化中的应用价值。资料与方法37例接受多层螺旋CT肝脏灌注测量。20例无明显肝脏疾患的志愿者(正常组),17例肝硬化患者(肝硬化组),再按其肝硬化程度分为两组:9例为轻中度肝硬化(轻中度肝硬化组),8例为重度失代偿肝硬化(重度失代偿组)。计算各例的各项灌流指标并进行组间比较。结果(1)肝硬化组与正常组相比,门静脉灌流量(HPP)、门静脉灌流指数(PPI)明显减低[HPP:(0.49±0.19)ml·min-1·ml-1与(0.60±0.16)ml·min-1·ml-1,P=0.045;PPI:0.58±0.14与0.67±0.06,P=0.015],门静脉与肝动脉灌流比率(HPP/HAP)亦明显减低(1.63±0.87与2.12±0.65,P=0.04),肝动脉灌注指数(HPI)升高(0.42±0.14与0.33±0.06,P=0.015),提示肝硬化时HPP减少,门静脉血流在肝脏血供中的比例减少,而动脉的灌流比重增加;(2)重度失代偿组肝硬化HAP较轻中度组明显升高[分别为(0.48±0.16)ml·min-1·ml-1与(0.25±0.07)ml·min-1·ml-1,P=0.002],HPI亦明显升高(分别为0.54±0.10与0.32±0.07,P=0.0001),PPI则明显降低(分别为0.46±0.10与0.68±0.07,P=0.0001),提示不同程度肝硬化其灌注指标存在差异,灌注改变与肝硬化程度有关。结论肝脏CT灌注测量可以反映肝硬化的血流灌注改变,灌注值的变化也能够提示肝硬化的程度。

Nonlinear Differential Equation of Macroeconomic Dynamics for Long-Term Forecasting of Economic Development

In this article we derive a general differential equation that describes long-term economic growth in terms of cyclical and trend components. Equation is based on the model of non-linear accelerator of induced investment. A scheme is proposed for obtaining approximate solutions of nonlinear differential equation by splitting solution into the rapidly oscillating business cycles and slowly varying trend using Krylov-Bogoliubov-Mitropolsky averaging. Simplest modes of the economic system are described. Characteristics of the bifurcation point are found and bifurcation phenomenon is interpreted as loss of stability making the economic system available to structural change and accepting innovations. System being in a nonequilibrium state has a dynamics with self-sustained undamped oscillations. The model is verified with economic development of the US during the fifth Kondratieff cycle (1982-2010). Model adequately describes real process of economic growth in both quantitative and qualitative aspects. It is one of major results that the model gives a rough estimation of critical points of system stability loss and falling into a crisis recession. The model is used to forecast the macroeconomic dynamics of the US during the sixth Kondratieff cycle (2018-2050). For this forecast we use fixed production capital functional dependence on a long-term Kondratieff cycle and medium-term Juglar and Kuznets cycles. More accurate estimations of the time of crisis and recession are based on the model of accelerating log-periodic oscillations. The explosive growth of the prices of highly liquid commodities such as gold and oil is taken as real predictors of the global financial crisis. The second wave of crisis is expected to come in June 2011.

多层螺旋CT后处理技术在脊柱侧弯中的应用

目的 探讨16排多层螺旋CT后处理技术在脊柱侧弯诊疗中的应用价值。资料与方法 搜集脊柱侧弯患者2 3例,在16排多层螺旋CT机上扫描后,均行多平面重建(MPR)、表面遮盖重建(SSD)与容积再现(VRT)重建。评价不同的图像后处理技术的作用和优势。结果 MPR因脊柱侧弯的改变而显示不连续,矢状位可观察椎管内情况;SSD可观察全脊柱影及侧弯的曲度,但缺乏对椎管内形态的显示;VRT通过调节不同密度的阈值并辅以不同的伪彩依次可显示骨质及椎管的形态,也可清晰显示全脊柱侧弯所有相关表现,尤其适用于观察侧弯的分类与椎管的状况。结论 多层螺旋CT可一次性完成全脊柱扫描。横轴位结合其丰富的后处理图像能提供脊柱侧弯非常有价值的空间结构信息,其表现接近靶组织的解剖,有利于临床医师选择治疗方案和制定手术路径。

鞍区胶质瘤的CT和MRI诊断

目的分析鞍区胶质瘤的CT和MRI特点及临床发病特征。资料与方法经手术病理证实的鞍区胶质瘤8例,其中7例位于鞍上,1例位于鞍内。3例行CT检查,5例行MRI检查。结果鞍上胶质瘤体积较大,呈不规则分叶状,边界光滑锐利,基本没有瘤周水肿,瘤内偏上方多发囊变,无明显钙化及出血,少数可沿视觉通路生长,CT平扫稍低或等密度,MRI检查T1WI呈稍低、低信号,T2WI高信号,CT及MR增强扫描,肿瘤实性部分可见显著强化。此外,临床上这些患者就诊时多有眼部症状,而均无下丘脑及垂体内分泌异常症状。鞍内胶质瘤位置偏后,瘤周无水肿,瘤内可有多发微囊变,无明显钙化及出血。结论鞍上胶质瘤有比较典型的CT和MRI特点,结合患者临床发病特点,有助于提高其术前诊断率;鞍内胶质瘤易误诊,对有多发微囊变的位置偏后的鞍内肿瘤,应考虑到本病可能。

下颈椎椎弓根三维CT测量及个体化置钉术的实验研究

目的探讨三维CT测量下颈椎椎弓根并利用其测量数据辅助行下颈椎椎弓根个体化置钉,判断其准确性.方法成人颈椎标本6例行三维CT扫描重建,在三维图像上定出椎弓根的轴线,并画出沿皮质骨内外、上下侧缘与轴线的平行线在侧块上的投影,此投影区域即为置钉的进钉点范围.测量此区域与上位颈椎下关节突下缘和侧块外缘的距离,以及测量椎弓根轴线在横断面上与正中线的夹角及矢状面与终板的夹角.利用上述测量数据在标本C3～C7椎弓根进行置钉.将置钉后的标本再进行常规CT扫描,判断置钉的准确性.结果利用上述方法,57个椎弓根行置钉术,86%(49个)完全在椎弓根内,14%(8个)穿孔.其中6个穿破横突孔,2例向椎弓根上外侧穿出.置钉准确性高于以往实验研究的结果.结论利用三维CT测量的数据辅助行下颈椎椎弓根置钉是安全的,其准确性高于传统方法,但仍有一定的穿孔率,说明术中探针的手感仍非常重要.

X线、CT和MRI对小肠Crohn病诊断价值的评价

目的:探讨X线、CT和MRI对小肠Crohn病的诊断价值及其限度。材料和方法:分析经肠镜、手术和病理诊断的26例小肠Crohn病的X线、CT和MRI表现,其中X线小肠灌肠13例,CT小肠造影15例,MRI检查13例(其中小肠MRI水成像和注气小肠灌肠分别为7例和6例),同时行X线小肠灌肠和CT检查7例,行X线小肠灌肠和MRI检查8例,行CT和MRI检查2例。结果:13例小肠Crohn病的X线表现为多个节段性病变12例(92%),线形溃疡11例(85%),卵石征11例(85%),瘘管形成4例,不对称性病变伴假憩室样改变3例,误诊为肠管外炎性肿块和脓肿3例。15例CT小肠造影表现为肠壁增厚15例(100%),强化增加13例(87%),多节段性病变13例(87%),肠管周围蜂窝织炎11例(73%),脓肿和炎性肿块5例,瘘管形成3例。13例MRI表现为肠壁强化增加13例(100%),肠壁增厚12例(92%),多节段性病变11例(85%),肠管周围蜂窝织炎9例(69%),炎性肿块6例,瘘管2例。CT和MRI均未显示肠壁线形溃疡和卵石征。结论:X线小肠灌肠易于显示小肠Crohn病线形溃疡和卵石征的特征性改变,对小肠Crohn病的初次诊断具有重要价值,但难以明确显示肠管外炎性肿块和脓肿;CT和MRI均难以显示肠壁线形溃疡和卵石征,但可明确显示病变肠壁及其周围并发症,对于指导临床治疗以及评价临床疗效具有重要价值。

Key technologies and practice for gas field storage facility construction of complex geological conditions in China

In view of complex geological characteristics and alternating loading conditions associated with cyclic large amount of gas injection and withdrawal in underground gas storage(UGS) of China, a series of key gas storage construction technologies were established, mainly including UGS site selection and evaluation, key index design, well drilling and completion, surface engineering and operational risk warning and assessment, etc. The effect of field application was discussed and summarized. Firstly, trap dynamic sealing capacity evaluation technology for conversion of UGS from the fault depleted or partially depleted gas reservoirs. A key index design method mainly based on the effective gas storage capacity design for water flooded heterogeneous gas reservoirs was proposed. To effectively guide the engineering construction of UGS, the safe well drilling, high quality cementing and high pressure and large flow surface injection and production engineering optimization suitable for long-term alternate loading condition and ultra-deep and ultra-low temperature formation were developed. The core surface equipment like high pressure gas injection compressor can be manufactured by our own. Last, the full-system operational risk warning and assessment technology for UGS was set up. The above 5 key technologies have been utilized in site selection, development scheme design, engineering construction and annual operations of 6 UGS groups, e.g. the Hutubi UGS in Xinjiang. To date, designed main indexes are highly consistent with actural performance, the 6 UGS groups have the load capacity of over 7.5 billion cubic meters of working gas volume and all the storage facilities have been running efficiently and safely.

螺旋CT双期增强扫描对肝细胞癌的诊断

目的:探讨肝细胞癌(HCC)的血供方式及CT表现。方法:回顾性分析 50例经手术、病理及临床发展过程证实的肝细胞癌的CT强化特点及征象。结果: 50例肝细胞癌平扫低密度 50例,合并高密度 5例;境界不清楚 31例,显示包膜 8例。动脉期病灶强化 46例,供瘤动脉增粗迂曲及病灶内肿瘤血管 18例,动静脉分流 10例。门静脉期病灶呈低密度 47例,血管受侵 25例;门脉癌栓 8例,伴发肝内子灶 10例;肝硬化征象 40例;肝门及腹膜后淋巴结增大 13例。结论:螺旋CT增强双期扫描技术能显示HCC病灶血供特点及较特征性的CT征象:动脉期病灶强化、供瘤血管增粗、病灶内肿瘤血管、动静脉分流、包膜、肝内子灶、血管侵蚀及静脉瘤栓、肝门及腹膜后淋巴结肿大。

Dynamic Behavior and Its Consideration of EHD Liquid Extraction Phenomenon Causing under DC or Low-Frequency AC Voltage

This paper describes an experimental and theoretical study on an extraction phenomenon of liquids occurring at an air gap between the liquid surface and the electrode by applying a direct current (DC) or low-frequency alternating current (AC) voltage. Three liquids with a different physical property;2,3-dihydrodecafluoropenten, palm fatty acid ester oil and crude rapeseed oil are used as working liquids. The electrode configuration is the sphere or plane (high voltage electrode) to grounded plane electrode. The grounded plane electrode is fixed to the bottom of the test vessel with working liquid and the high voltage electrode is installed in an air above the liquid surface against the grounded plane electrode. The liquid surface swells towards the high voltage electrode by the increase of voltage and the liquid is extracted in a short time, thereafter the air gap between the liquid surface and the high voltage electrode is bridged at a thick liquid column. Such the liquid behavior displays unique features with voltage polarity effect for each working liquid. The relationship between the applied voltage, current variation, height of swollen liquid, force pulling liquid and dynamic feature of liquid is examined experimentally. The liquid behavior is considered theoretically based on experimental observations.

实验性间接性颞下颌关节损伤的高分辨率CT研究

目的 建立间接性颞下颌关节损伤（ＴＭＪＩ）动物模型，探讨ＣＴ在 ＴＭＪＩ诊断中的应用。方法 对成功的１８只 ＴＭＪＩ模 型兔．用ＧＥ９８００ＣＴ机按设计的分组方法进行１．５ｍｍ薄层连续冠状面扫描，用一种不同窗宽／窗位观察并进行关节盘区ＣＴ值 测量、结果 骨窗显示骨折好，重建前后区别不大。软组织窗显示ＴＭＪ脂肪囊好。Ｄｅｔａｉｌ窗显示关节盘好，而且关节盘区最佳窗宽／ 窗位为４００ Ｈｕ／１００ Ｈｕ。ＴＭＪ脂肪囊内不均匀高密度为ＣＴ诊断关节盘破裂时具有特征的间接征象。ＴＭＪＩ实验组ＣＴ值高于对照 组（Ｐ＜０．０１）。而在不同时间相比，伤后１Ｗ实验组ＣＴ值高于对照组（Ｐ＜０．０５）。结论 ＣＴ对ＴＭＪＩ的骨折及关节盘区软组织改 变显示优越。 一定程度上也可显示关节盘破裂。