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     ③ Pia matral encephali microvascular leukocyte velocity: That in model group was lower remarkably in normal group.
     ③软脑膜微动物白细胞速度:模型组明显低于正常组。
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     Animals
     动物
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     Animal;
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     Microecology in Animal Gastrointestinal Tracts and Regulation
     动物胃肠生态及其调控
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     Progress in the Research on Micro Ecological Feed Additives
     动物生态制剂的研究进展
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     Nondifferentiable D.
     不可D.
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According to the permited maximun speed and the characfer of the minivibrafion of the objects holoqraphed, the special technigue has been invesfigated in this paper.The hologhraph has been taken on an ordinary laboratory table and the possibility of taking a holograph of the human body has also been discussed here.

文章根据拍摄微动态物体全息图时允许物体的最大速度和微动物体的振动特点,研完了用低功率He—Ne激光器拍摄这种物体的方法,在一般实验台上拍出了这类物体的全息图,并提出用He—Ne激光器拍摄人体全息图的可能性。

The VSMs (vase-shaped microfossils) under discussion in this paper were found in the Yuanjiaping section, 3 km southwest of Kuanchuanpu Village, Ningqiang County, Shaanxi Province. Stratigraphically, these VSMs belong to the small shelly fossil zone Anabarites-Proto-hertzina. The fossiliferous bed occurs as a thin chert interbed within the lower Meishucunian limestone, which abounds with organic matter and contains a few pebble-shaped siliceous intra-clasts, in which there are also many VSMs.The VSMs collected...

The VSMs (vase-shaped microfossils) under discussion in this paper were found in the Yuanjiaping section, 3 km southwest of Kuanchuanpu Village, Ningqiang County, Shaanxi Province. Stratigraphically, these VSMs belong to the small shelly fossil zone Anabarites-Proto-hertzina. The fossiliferous bed occurs as a thin chert interbed within the lower Meishucunian limestone, which abounds with organic matter and contains a few pebble-shaped siliceous intra-clasts, in which there are also many VSMs.The VSMs collected were recognized both in thin sections and from acid-resistant residues of samples. About 30 fossil individuals per square milimetre of thin section were observed under the microscope. Their lengths range between 15 and 60 μm, commonly between 20 and 40 fan. The tests of VSMs are all preserved as organic carbon, and those occurred in the intraclasts were mostly replaced by siliceous materials. The organic carbon of tests would be only the remainder of a certain complex organic components, which had been carbonized in the diagenetic stage. In thin section, it can be seen that such carbonic tests have opaque walls, both interior and exterior surfaces of which are covered with a calcareous membrance. Such membrances are very clear when the matrix and filling materials of the tests are black organic matter. Obviously, these calcareous membrances are only the external things for microfossils, and should be the homoloque in origin with the veined calcites filling in cracks of the chert bed.Examination of most specimens indicates that the two communities of VSMs yielded in the chert bed itself and the intraclasts are similar in general features. This only lies in that they may represent separately the contents of the individuals (assemblages) of distinct generations in the same microfauna. In considering the characteristics of the tests, the above-mentioned VSMs assemblage is divided into 5 types.

本文报道的瓶状微化石,发现于陕西宁强宽川铺袁家坪剖面,化石产出层位为下寒武统梅树村阶下部小壳化石Anabarites-Protohertzina带。所获微化石数量颇为丰富,囊壳甚小并业经碳化。袁家坪瓶状微化石群的发现,填补了梅树村阶下部此类化石的空白,进一步表明发生于晚前寒武纪的该类具瓶状囊壳的微动物群,曾延入寒武纪早期的事实。现有微化石以碳质保存,为探讨其囊壳原始物质组成提供了新的证据。

BACKGROUND: Direct observation of infarcted microvascular perfusion after cerebral infarction is the most immediate evidence in evaluation of therapeutic effects. OBJECTIVE: To observe dynamic changes in flowing quality and field in cerebral ischemic area in rats so as to qualitatively and quantitatively analyze the microvascular state in pia matral encephali ischemic area and the changes of associated leukocytic flowing velocity and flowing morphology. DESIGN: Randomized controlled experiment was designed....

BACKGROUND: Direct observation of infarcted microvascular perfusion after cerebral infarction is the most immediate evidence in evaluation of therapeutic effects. OBJECTIVE: To observe dynamic changes in flowing quality and field in cerebral ischemic area in rats so as to qualitatively and quantitatively analyze the microvascular state in pia matral encephali ischemic area and the changes of associated leukocytic flowing velocity and flowing morphology. DESIGN: Randomized controlled experiment was designed. SETTING: Department of Acupuncture and Moxibustion of General Hospital Chinese PLA. MATERIALS: The experiment was performed in Research Room of Microcirculation of General Hospital Chinese PLA, in which, 120 female Wistar rats of 2-month old were employed and randomized into acupuncture group (36 rats), model group (36 rats), sham-operation group (36 rats) and normal group (12 rats). The first 3 groups were subdivided in 3 hours, 6 hours and 24 hours groups according to the prescriptive time divisions, 12 rats in each group. METHODS: In acupuncture and model groups, after abdominal anesthesia with pentobarbital sodium, the cranium was opened and the occlusion of meddle cerebral artery was performed in cerebrum with heat-coagulation method. In sham-operation group, anesthesia and cranium opening were performed, but the meddle cerebral artery was not occluded. In normal group, no any management was performed. In acupuncture group, 60 minutes after occlusion of meddle cerebral artery in cerebrum, needling was given on Renzhong (GV 26) and Neiguan (PC 6) with electric stimulation of disperse-dense wave, 4-10 Hz frequency and 0.4 V of intensity, lasting for 5 minutes. Afterwards, pecking-acupuncture technique was done on Renzhong (GV 26) to achieve strong stimulation for 10 seconds. In sham-operation and model groups, the rats were in process of grasping and fixation, but acupuncture was not applied. Vascular endotheliocyte fluorescence staining and leukocyte fluorescence tracing method were applied, in combination with microscopic video system and computer imaging analyzing system, to observe in dynamic and quantitatively the influences of acupuncture on pia matral encephali microvascular morphology, density and blood flowing velocity at 3 hours, 6 hours and 24 hours after cerebral occlusion of meddle cerebral artery. MAIN OUTCOME MEASURES: ① Pia matral encephali microvascular morphology, density and blood flowing state at various time divisions observed directly microscopically and vascular endotheliocyte morphology and the state of brain tissue which near the microvascular after infusion with fluorescent reagent in each group. ② Microvascular density and blood flow velocity in infarcted area at various time divisions measured in quantity in each group. RESULTS: Totally 120 rats all entered result analysis. ① In model group, microvascular endotheliocytes were colored worse and more fluorescent exudation appeared. Those were better remarkably in acupuncture group compared with model group. ② Pia matral encephali microvascular density: That in model group was lower than normal group. That at 3 hours, 6 hours and 24 hours in acupuncture group was higher remarkably than model group [(6.92±0.42), (3.25±0.52) pces/visual field; (7.61±0.51), (3.68±0.32) pces/visual field; (8.24±0.72), (5.49±1.2) pces/visual field,q=5.02-13.84, P < 0.01]. ③ Pia matral encephali microvascular leukocyte velocity: That in model group was lower remarkably in normal group. That at 3 hours, 6 hours and 24 hours in acupuncture group was higher remarkably than model group [(1 193±358), (600±261) μm/s; (1 112±267), (517±115) μm/s, (1 766±293), (611±291) μm/s, q=4.60-8.28, P < 0.01]. CONCLUSION: At early stage of cerebral infarction, broken blood flow is severe in artery, vein and capillary in ischemic area; the numbers of opened vessels are few, flow rate is slow down and cerebral perfusion is unsatisfactory. Acupuncture amaliorate the microcirculation perfusion state in ischemic area, increases the numbers of opened vessels and improves flowing morphology of blood cell.

背景:脑梗死发生后直接观察梗死区微血管灌注状态是评价治疗效果的最直接证据。目的:动态观察大鼠脑缺血区流质、流场的变化,定性、定量地分析软脑膜缺血区微血管的状态及其所伴随的血细胞的流速及流态变化。设计:随机对照实验。单位:解放军总医院针灸科。材料:实验于2000-05/09在解放军总医院微循环研究室完成。选用健康雌性2月龄Wistar大鼠120只,单纯随机分为针刺组36只,模型组36只,假手术组36只,正常组12只。前3组又按拟观察时段的要求分3,6,24h组,每组12只。方法:针刺组、模型组动物经戊巴比妥钠腹腔麻醉后,用开颅热凝阻断法行大脑中动脉阻塞术。假手术组经麻醉,开颅等手术过程,但不阻断大脑中动脉。正常组不做任何处理。针刺组于大脑中动脉阻塞术60min后,在人中、内关穴区施加针法:先刺双侧内关,接电针仪,疏密波、频率4~10Hz,强度0.4V,持续刺激5min。继续针刺人中,施雀啄手法强刺激10下。假手术组、模型组动物经抓取、固定过程,但不针刺。采用血管内皮细胞荧光染色及白细胞荧光示踪法,结合显微录像系统和计算机图像分析系统,动态定量地观察了针刺对大脑中动脉阻塞后3,6,24h软脑膜微血管形态、密度、血...

背景:脑梗死发生后直接观察梗死区微血管灌注状态是评价治疗效果的最直接证据。目的:动态观察大鼠脑缺血区流质、流场的变化,定性、定量地分析软脑膜缺血区微血管的状态及其所伴随的血细胞的流速及流态变化。设计:随机对照实验。单位:解放军总医院针灸科。材料:实验于2000-05/09在解放军总医院微循环研究室完成。选用健康雌性2月龄Wistar大鼠120只,单纯随机分为针刺组36只,模型组36只,假手术组36只,正常组12只。前3组又按拟观察时段的要求分3,6,24h组,每组12只。方法:针刺组、模型组动物经戊巴比妥钠腹腔麻醉后,用开颅热凝阻断法行大脑中动脉阻塞术。假手术组经麻醉,开颅等手术过程,但不阻断大脑中动脉。正常组不做任何处理。针刺组于大脑中动脉阻塞术60min后,在人中、内关穴区施加针法:先刺双侧内关,接电针仪,疏密波、频率4~10Hz,强度0.4V,持续刺激5min。继续针刺人中,施雀啄手法强刺激10下。假手术组、模型组动物经抓取、固定过程,但不针刺。采用血管内皮细胞荧光染色及白细胞荧光示踪法,结合显微录像系统和计算机图像分析系统,动态定量地观察了针刺对大脑中动脉阻塞后3,6,24h软脑膜微血管形态、密度、血流速度的影响。主要观察指标:①从显微镜下直接观察各组大鼠不同时段软脑膜微血管的形态、密度、血流状况,以及注入荧光剂后血管内皮细胞形态和周围脑组织状况。②定量测量各组大鼠不同时段梗死区微血管密度、血流速度。结果:120只大鼠均进入结果分析。①模型组各时段微血管内皮细胞着色差,组织渗出荧光多,针刺组明显好于模型组。②软脑膜微血管密度:模型组明显低于正常组。针刺组3,6,24h时段明显高于模型组犤(6.92±0.42),(3.25±0.52)根/视野;(7.61±0.51),(3.68±0.32)根/视野;(8.24±0.72),(5.49±1.2)根/视野,q=5.02~13.84,P<0.01犦。③软脑膜微动物白细胞速度:模型组明显低于正常组。针刺组3,6,24h时段明显高于模型组犤(1193±358),(600±261)μm/s;(1112±267),(517±115)μm/s,(1766±293),(611±291)μm/s,q=4.60~8.28,P<0.01犦。结论:在脑梗死早期,缺血区动、静脉、毛细血管断流现象严重,开放的血管数目少,流速减慢,脑灌注不良。针刺可改善缺血区的灌注状态,使开放的血管数增多,血细胞流态改善。

 
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