查询词典 occlusion

In order to draw a photorealistic surface, Bidirectional Texture Functions, a 6D texture function which extends Bidirectional Reflectance Distribution Function to include the self-shadowing, self-occlusion and inter-reflection effects, has been mentioned frequently in recent years. Its main drawback is its massive data size. To solve this, Spatial Bidirectional Reflectance Function techniques compress BTFs into reflectance model parameters. However, SBRDF cannot producethe self-shadowing and self-occlusion effects in real-world surface geometry. This work is aimed to this drawback. I find how self-shadowing and self-occlusion affect the surface by additional physical-based analysis. And I rely on two physical phenomena to divide self-shadowing and self-occlusion into two independent effects. First, self-shadowing is view independent. Second, self-occlusion is independent of lighting direction changes. After these analyses, I use SBRDF and additional self-shadowing and self-occlusion I found to render a photorealistic surface as non-compressed BTFs doing.

为了把物体表面呈现的更真实，六维函数BTFs ( Bidirectional Texture Functions)目前已经被使用的相当频繁，但BTFs的资料量实在太大而没办法直接使用，为了解决资料庞大的问题，传统的SBRDF以逼近光反射模型参数，来达到资料压缩的效果，但是SBRDF对於表面的凹凸所产生的阴影及遮蔽，不能达到逼真的呈现，为了改善这个问题，我们选择从物理方面，找出资料中阴影和遮蔽等属於表面几何的资料并去除，使参数更正确，同时利用两个物理现象去区分阴影及遮蔽为两个互不干涉资料，第一是阴影不会因视角不同而改变，第二是遮蔽不因光线方向不同而改变，经过这些分析，我可以利用SBRDF加上附加的阴影及遮蔽两种独立的效应，来达到彷佛跟未压缩过的BTFs一样的真实绘图。

During open/close movement, the distance of condylar movement is smaller than normal occlusion(P.05). During protrusion/retrusion movement, protrusion extent increase,the distance of condylar movement is bigger than normal occlusion(P.05). During lateral excursion, the trace in sagittal plane of the non-working side condyle is more incline than protrusion movement trace and the distance of the left non-working side condylar movement is larger than the right. During mediotrusion/right movement, the left biggest space distance is larger than normal occlusion and the transversal condylar inclination is smallar than normal occlusion when the distance of condylar movement is 5mm, the difference is statistically significant.

在开闭口运动时，双侧髁突运动幅度减小、位移量小于正常牙合者(P.05)；前伸后退运动时，前伸幅度增加，位移量大于正常牙合者(P.05)；侧方运动时，非工作侧髁突在矢状面上的轨迹较前伸轨迹向前下方倾斜度增加，非工作侧髁突空间位移左侧大于右侧，向右侧方运动中，左侧髁突空间位移大于正常牙合者，髁突位移5mm时水平面髁突倾斜度小于正常牙合者，差异有统计学意义。

The 4th left rib was cut and a model of left coronary artery occlusion/release was carried outo Rats were divided randomly into 4 groups: control group without LCA occlusion (group A, n=6);I/R group(group B, n=6); ketamine(5mg.kg-1)+I/R group (group C, n=6); ketamine(10mg.kg-1)+I/R group(group D,n=6)o All rats in groups B, C , D were subjected to 30 minutes of LCA occlusion followed by 120minutes of reperfusion. Rats in group C and D were injected with 5mg.kg-1 and 10mg.kg-1 of ketamine before reperfusion, respectively. Significant electrocardiogram and color changes at the area at risk were considered indicative of successful coronary occlusion and reperfusionc Serum was exampled from left jugular vein at 30 minutes and 120 minutes during reperfusion to measure IL-6 and TNF- level by ELISA measurements. After reperfusion of 120 minutes, the heart was removed and the cardiac apex was exampled with snap-frozen in liquid nitrogen and stored at -70 C .

采用左冠状动脉前降支结扎开放建立心肌缺血／再灌注模型，健康SD大鼠24只，随机分为心包打开假手术组(A组，n=6)，缺血／再灌注对照组(B组，n=6)，5 mg·kg~(-1)氯胺酮+缺血／再灌注组C组，n=6，缺血30min后右腹股静脉注入5 mg·kg~(-1氯胺酮，10mg·kg~(-1)KTM+I／R组D组，n=6，缺血30min后右腹股静脉注入10 mg·kg~(-1氯胺酮。10％水合氯醛40 mg·kg~(-1)腹腔注射麻醉，气管切开，连接多功能监护仪记录心电图；小动物呼吸机人工呼吸，呼吸频率60次／分，潮气量2ml／100g，于左胸第四肋间打开胸腔暴露心脏，在左心耳下1mm左冠状动脉处，用丝线，眼科外用不锈钢小圆针穿过心肌浅层，稳定10min后将U型含有铜丝的胶管置于冠状动脉表面一起结扎(A组不结扎，B、C、D组结扎)；结扎开始左心室心尖部即由红色变暗，30 min后呈暗红色，心电图中出现S-T段抬高，说明缺血形成。

METHODS: Male Wistar rats were randomly divided into 4 groups: in sham group, only anesthetization and operation were performed; in MLR group, occlusion of mesenteric lymphatics for 1 h followed by 2 h of reperfusion; in SMAO group, occlusion of superior mesenteric artery for 1 h followed by 2 h reperfusion; in MLR+SMAO group, occlusion of SMA and ML for 1 h followed by 2 h of reperfusion.

Wistar雄性大鼠均分为4组：sham组，仅麻醉与手术；MLR组，夹闭肠系膜淋巴管1 h，再灌注2 h；SMAO组，夹闭肠系膜上动脉1 h，再灌注2 h；MLR+SMAO：夹闭ML和SMA1 h，再灌注2 h。

However, grade II CT signs did not always result from type 2 occlusion; 21.1% of patients with grade II CT signs had type 4 occlusion. When the MCA trunk is short, the lateral group of the lenticulostriate arteries may arise from the M2 segment[2, 12]. In such cases, type 4 occlusion may also involve the lateral or posterior part of the putamen.

但是，II级早期CT征象（部分壳核后外侧区出现低密度）并非仅仅由2型大脑中动脉闭塞（包括部分豆纹动脉在内的大脑中动脉主干闭塞，豆纹动脉部分受累）引起；本研究中，21.1%深部大脑中动脉分布区出现II级早期CT征象（部分壳核后外侧区出现低密度）的患者，是因4型大脑中动脉闭塞（大脑中动脉M2段闭塞）引起的；这些患者的大脑中动脉主干均很短，因此外侧豆纹动脉群（lateral lenticulostriate arteries）是由大脑中动脉M2段发出的；此时，4型大脑中动脉闭塞（大脑中动脉M2段闭塞）也可以导致壳核后部或外侧部出现低密度（深部大脑中动脉分布区II级早期CT征象）。

PART 1 EXPRESSION OF MMP/TIMP IN SKELETAL MUSCLE OF ARTERIAL OCCLUSION DISEASE MODELS OF DOG'S HIND LIMB Objective To study the distribution changes of typeⅠand typeⅢcollagen in skeletal muscle of arterial occlusion disease models of dog's hind limb and the expression of MMP-2/TIMP-2 in skeletal muscle of arterial occlusion disease models of dog's hind limb. To investigate the significances of collagen metabolism and MMPs in skeletal muscle remodeling due to ischemia.

第一部分MMP/TIMP在犬后肢动脉闭塞性病变模型骨骼肌中表达的变化目的研究Ⅰ型胶原、Ⅲ型胶原在犬后肢动脉闭塞性病变模型骨骼肌的分布变化以及MMP-2、TIMP-2在犬后肢动脉闭塞性病变模型骨骼肌表达的变化，探讨胶原代谢和基质金属酶系统在缺血导致的骨骼肌重塑中的意义和作用。

Compare the models on the articulator with the oral occlusion of 10 testees whose occlusion systems are normal to estimate the accordance of articulator and the oral cavity.

对10例口颌系统功能正常的受试对象的口内情况与架上的模型情况进行对比分析，来对架与口内情况的符合程度进行评价。

Selected anastomosis site:The site for the attempt at anastomosis creation was chosen at least 2-3 disc diametersaway from the optic disc or 1 disc diameter peripheral to the occlusion site in eyes with bruch retinal vein occlusion, and a large underlying choroidal vein by showing in ICGA, usually in the inferior fundus.

激光吻合：在选定的吻合部位，用选定的高能量激光先击射邻近的＊＿Ch膜，接着是静脉壁本身，Bruch膜破裂的疑似迹象，为一汽化泡，当静脉壁破坏时有微量的出血。37例RVO共做了86个吻合点，所用的激光参数为：光斑直径50p，曝光时间 0.l秒，使用绿光最多 63个点（72％），功率 800～900mw，少数用氟红、氟黄及Nd：YAG激光。

This is not ambient occlusion as in the usual definition, but it indeed gives some kind of concavity for the shaded point, what can be interpreted as an occlusion factor.

这不是通常所说的环境遮挡的定义，但是它确实给这个着色点带来了一些凹凸感，我们可以把它解释成遮挡系数。

Cases had non-isolated splenic vein occlusion, including 6 cases with interruptive thrombosis in PV-SV-SMV junction and 3 cases with stenosis or occlusion near PV trunk and SMV. 30 cases had been combined with twist vein collateral circulation and 6 cases with portal hypertension.

非孤立性脾静脉阻塞9例，其中PV—SV—SMV汇合部中断闭塞6例，近汇合部PV主干合并SMV狭窄、闭塞3例；伴有增粗扭曲的侧支循环静脉30例，合并区域性门静脉高压6例。

This matter overthrew all basises I learned from Sunday school .

这件事把我从周日学校学到的所有道理都颠覆了。

It's one of the cruel ironies of aging: if you want to remember your favorite restaurants, the less you should eat at them.

这是一个老化的残酷讽刺：如果你想记住你最喜欢的餐馆，你应该更少吃到它们。