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     The anterior arterial group of the mesencephalon consists of the branches of theinterpeduncular fossa,the anterior mesencephalic branches of the superior cerebellarand the posterior cerebral arteries.
     中脑腹侧由脚间窝支、小脑上和大脑后动脉的中脑前支组成的前组动脉供应。
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     Isodyne Method proposed by J.
     J.
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     According to the experience formula of Feng Naiqian and N.
     N.
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     The Language of the Feet
     的语言
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     Play with the foot from the head
     从头玩到
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     Operation of target object after sequence movements is usually completed by hand or foot.
     通常,进行序列运动后目的物的操作手或完成。
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Under operative microscope of 4~9 magnifications the arteries of the brainstemhave been dissected on 50 Chinese brains(40 adults,10 children);the origin,distribution,number and anastomoses of the arteries have been observed in detailand the problem of arterial occlusion of the brainstem in relation to clinicalsyndromes have been discussed briefly.The ventral surface of the medulla is mainly supplied by the branches of theanterior spinal artery,its lateral surface by the lateral medullary branches of thevertebral...

Under operative microscope of 4~9 magnifications the arteries of the brainstemhave been dissected on 50 Chinese brains(40 adults,10 children);the origin,distribution,number and anastomoses of the arteries have been observed in detailand the problem of arterial occlusion of the brainstem in relation to clinicalsyndromes have been discussed briefly.The ventral surface of the medulla is mainly supplied by the branches of theanterior spinal artery,its lateral surface by the lateral medullary branches of thevertebral artery and the posterior inferior cerebellar artery,and the posterior surface bythe branches of the posterior inferior cerebellar and the posterior spinal arteries.Differentsyndromes occur in the occluded arteries of the various parts of the medulla.The ventral surface of the pons is mainly supplied by the paramedian arteriesof the basilar artery.The short circumferential arteries of the basilar artery,thepontine branches of the anterior inferior and the superior cerebellar arteries constitutethe lateral group,supplying the lateral pontine surface,they anastomose with eachother around the trigeminal roots.The posterior pontine surface is supplied by thelong circumferential arteries of the basilar artery and the branches of the superiorcerebellar artery.The regional occlusion of the pons can be produced when the maintrunks of the anterior inferior and the superior cerebellar arteries are obstructed.The anterior arterial group of the mesencephalon consists of the branches of theinterpeduncular fossa,the anterior mesencephalic branches of the superior cerebellarand the posterior cerebral arteries.The lateral surface of the mesencephalon issupplied by the lateral mesencephalic branches of the above arteries,its posteriorsurface(corpus quadrigemina)by the posterior branches of the same vessels,theyanastomose with each other forming a vascular network.The arterial occlusion ofthe mesencephalon can also produce various syndromes.

作者在放大4~9倍的手术显微镜下对国人50例脑干各部动脉的起源、分布、支数及吻合情况进行了详细的观察,并对各组动脉闭塞所产生的脑干梗塞综合征作了联系与探讨。延髓腹侧主要由脊髓前动脉的分支供应,椎动脉的分支及盲孔支可作补充。椎动脉、小脑下后动脉的延髓外侧支在延髓外侧的血供中占主要地位,血管的阻塞可引起延髓外侧综合征。小脑下后和脊髓后动脉的分支组成后组供应延髓背侧。脑桥腹侧主要由基底动脉的旁正中动脉(4支)供应。脑桥外侧由基底动脉的短旋动脉(5支)、小脑下前及小脑上动脉的脑桥支组成的外侧组供应的,互相在三叉神经根周围吻合。脑桥背侧由基底动脉的长旋动脉(1~3支)和小脑上动脉的分支供应。小脑下前和小脑上动脉不仅供应小脑,它们在脑桥的血供中也很重要,血管的阻塞或结扎可导致脑干局部梗塞。中脑腹侧由脚间窝支、小脑上和大脑后动脉的中脑前支组成的前组动脉供应。中脑外侧由小脑上和大脑后动脉的中脑外侧支供应。中脑背侧(顶盖)由小脑上和大脑后动脉的中脑后支供应,血管在四叠体表面吻合成网。中脑血管的病变也可引起中脑不同区域的综合征。

Using 31 fresh neonatal brains, with the method of dyed-injection and stereomicroscope, the arterial supply and architecture of capillaries in the pons were studied. The capillary density of main nuclei and tracts of pons were observed and measured from two brains with image analysis system. The arteries supplying pons mainly origin from basal artery, anterior interior cerebellar artery (AICA) and superior cerebellar artery. There is a close relationship between AICA and abducent nerve, and may depressed each...

Using 31 fresh neonatal brains, with the method of dyed-injection and stereomicroscope, the arterial supply and architecture of capillaries in the pons were studied. The capillary density of main nuclei and tracts of pons were observed and measured from two brains with image analysis system. The arteries supplying pons mainly origin from basal artery, anterior interior cerebellar artery (AICA) and superior cerebellar artery. There is a close relationship between AICA and abducent nerve, and may depressed each other. In the pons the antero-median group arteries have three seto of long branches which run toward tegmentum and give rise to some branches repeatedly in right angle. These branches then go back ventrally in the shape of weeping willows. There is a highest vascular density in the area of superior olivary nucleus and there is a lowest density in the area of superior cerbelelar peduncle.

采用血管灌注和透明切片,在立体解剖显微镜下对30例脑桥内部动脉的分群,经行分支和供应范围进行了观察。并应用图像分析系统测算了脑桥内部主要神经核团和纤维束的毛细血管密度。脑桥内部前正中群有三组长动脉,分别由脚间窝下端,基底沟中部和盲孔处穿入,这些动脉在向脑桥被盖部经行和分布的过程中,可形成多级直角分支,使之呈“垂柳状”外观。脑桥内部的毛细血管构筑,在透明切片上,可显示出神经结构的轮廓。其中上橄榄核的毛细血管密度最高,小脑上脚的毛细血管密度最低。

Fans are essential mechanical equipment in power plants. There are some common failures in fan operation, such as bearing vibration, high bearing temperature, blade abrasion, impeller blade blocking, rotating stall and surge. These failures are due to anchor bolt break, soot-blowing on blade non-acting surface and worn-blade treatment in boiler operation, corrosion in air preheater, duct vibration, bad lubricating, insufficient cooling, large attack angle of admission, dust cleaning on precipitator not in time,...

Fans are essential mechanical equipment in power plants. There are some common failures in fan operation, such as bearing vibration, high bearing temperature, blade abrasion, impeller blade blocking, rotating stall and surge. These failures are due to anchor bolt break, soot-blowing on blade non-acting surface and worn-blade treatment in boiler operation, corrosion in air preheater, duct vibration, bad lubricating, insufficient cooling, large attack angle of admission, dust cleaning on precipitator not in time, failures in control oil system or in nave internal control system and unburned carbon deposits, etc. Effective solutions are promoted to every specific failure.

分析锅炉风机常见故障如由地脚螺栓折断、不停炉处理叶片非工作面积灰、不停炉处理叶片磨损、空气预热器腐蚀或风道系统振动等原因导致的引风机振动;由润滑不良、冷却不够和轴承异常等原因引起的轴承温度高;由进气冲角较大、除尘器清除不及时及叶片材料和焊缝的硬度不够引起的叶片磨损;由风机调节油系统故障和轮毂内部调节机构损坏、不完全燃烧造成的碳垢或灰尘堵塞调节动叶角度的空隙引起的动叶卡涩;由压差信号驱动差压开关报警或跳机导致的旋转失速和喘振,并针对每种故障产生的可能的原因提供了有效的解决措施。

 
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