Analysis,control and Forecast of Deformation and Pressure in soft Rock Tunnel
Simulating Experiments Combined with GC-IRMS: Application to Effective Source Rock Research
A Study on Interaction between Seepage Flow and Unloading Mechanics and Drainage of Fractured Rock Masses
Stability Study on Surrounding Rock with Structural Rheology in High Stress Area
Prediction of Discontinuities of deep rock masses and it's Application to engineering Stability of petroleum well-wall
Study on Damage-Failure Effect and Non-Harmonious Control Mechanism of Weak Structure of Surrounding Rocks of Roadways
Study of Carbonate Source Rocks Evaluation Criterion
碳酸盐 岩烃源 岩评价标准研究
Study on Continuum Damage of the Tunnel Brittle-Quasibrittle Surrounding Rocks
Study and Application on the Stability of the Mine Pillars and Surrounding Rocks in Xiadian Gold Mine
Geology, Geochemical Characteristics and Mechanism of Hydrocarbon-generating for Source Rocks from the Tertiary Salty Lacustrine Facies in the West Region of the Qaidam Basin
Results: The distance between the suprameatal tubercle and the petrous apex,posterior wall of carotid sulcus,medial wall of carotid canal, junction of the arcuate eminence and the petrous ridge was 3.27±1.61mm , 5.57±1.85mm, 8.21±1.95mm and 8.37±2.68mm,respectively.
结果 内听道上结节与 岩尖、颈内动脉沟后壁、颈内动脉管内壁和弓状隆凸与 岩嵴交点前缘的距离分别为3.27±1.61mm、5.57±1.85mm、8.21±1.95mm和8.37±2.68mm。
petrous apex 25 ,28 ;
The angle formed by the tentorium and the medial surface of petrous bone,the horizonal level and the trigeminal nerve on coronal CT/MR scan was 88.4±12.8 degrees, 43.2±8.0 degrees and 23.6±7.7 degrees respectively and no significant difference was found between bilateral sides(P> 0.05).
CT／MR冠状位上( 岩尖处)天幕— 岩骨内侧面、天幕—水平面及天幕—三叉神经成角依次为88.4±12.8度、43.2±8.0度和23.6±7.7度，双侧无显著性差别(P＞0.05)。
CT and MRI Findings of Congenital Cholesteatoma of Petrous Bone
Results:①The petrosal vein was 1～3 in number,2.9±2.0 mm in length and 2.3±1.0 mm in diameter.
Results:The diameter of petrosal vein was about (4.02±1.24)mm(1.18～6.38 mm).
结果:(1) 岩静脉主干直径为(4.02±1.24)m m(1.18～6.38 m m)。
The distance between the posterior semicircular canal and petrosal posterior surface was (4 1±1 1) mm.
后半规管至 岩部后表面水平距离为 ( 4 1± 1 1)mm。
IPS entered the petrosal part of the jugular foramen,in front of Cranial Nerves IX in 20%(4 cases),in the middle of IX and X in 70%(14 cases)and X and IX in 10%(2 cases).
The length of canal for greater petrosal nerve and of semicanal for tensor tympani is 13.93 mm and 11 . 86 mm respectively.
岩大神经管长13．93 mm; 鼓膜张肌半管长11．86 mm;
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Nests under a rock wall (7.69%) and a fallen tree (7.69%) were also found.
Detailed rock magnetic results show that the magnetic minerals of the sediments were dominated by ferrimagnetic minerals such as magnetite, and a small contribution of hematite and maghematite also existed.
The rock series is mainly calc-alk series with high potassium.
The South Tianshan Basin and East Tarim Basin were siliceous rock-limestone-mudstone basins.
In addition, the characteristics of petrochemical parameters, trace element contents and rare earth element distributions of different rock types of the granitoids in different geotectonic units are also sufficiently discussed.
Snow Cocks also favor roosting in areas with low vegetation, sparse grass, short grass, large rocks and close to houses.
The Zhongpu Group is distributed in the Shihuigou area and composed of medium-basic volcanic rocks and volcanic clastic rocks interspersed with cherts, limestones, slates, and metamorphic sandstones.
The geochemistry of chert from the Zhongpu Group reveals that all cherts coexisting with island-arc volcanic rocks formed in a continental margin basin environment.
The geochemical characteristics of intermediate-basic igneous rocks indicate that they belong to a tholeiite suite.
Elemental and Sm-Nd isotopic geochemistry on detrital sedimentary rocks in the Ganzi-Songpan block and Longmen Mountains
Computer tomography in children and adolescents with suspected malformation of the petrous portion of the temporal bone
The radiological investigation of the petrous bone in meningitis of unknown origin
Our purpose is to show the impact of proper radiological investigation of the petrous bone in all cases of meningitis of unknown origin.
- An epidermoid cyst of the apex of the petrous bone ruptured in the sphenoidal sinus and in the right pontocerebellar area was first presented to show the value of the routine skull examination.
The concept is presented of treating glomus jugulare tumors expanding into the petrous temporal bone by embolic occlusion of the feeding vessels, using a transfemoral percutaneous catheter technique.