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| | Forty rats were divided into four groups. (control group, arthritis group, electro-aucpuncture group and blocking with naloxone group). The arthritis of the ankle and metatarsus joint of rear legs was formed by attenuated tuberculoto- xin. The circuit of the metatarsus, the local temperature and the pain threshold were measured. The acu points selected for electro-acupuncture were double Huantiao which were needled once a day for 5 days with needle retaining in points for 20 minuts. A resting Period of 3 da... | | 实验用Wistar大鼠40只,分对照、关节炎、电针、纳洛酮阻断四组。以减毒结核菌在后足踝、蹠关节形成实验性关节炎,作为慢性疼痛模型。测定蹠围、炎症局部皮温和痛反应阈。电针两侧环跳穴,引针20分。每日一次、五日为一疗程、间隙三天,共做三个疗程。甲啡肽(MEK)含量以放射免疫法测定。结果发现,电针对大鼠实验性关节炎无明显长时间的止痛作用,对炎症也无影响。正常大鼠下丘脑,垂体MEK含量分别为250.43±40.40pg/mg与297.81±39.00pg/mg。关节炎组分别为160.54±32.25与228.85±31.18pg/mg,明显低于正常(P<0.01)。电针组MEK含量分别为251.00±38.46与286.36±41.92pg/mg。可见,电针能使关节炎大鼠大丘脑和垂体的MEK含量提高(P<0.01)。 | | 文摘来源 | | The paper discusses the possibility and main problem of three ways developing Manchurian ash mixed forest in Heilongjiang province. Selecting site is in the first condition in the way to develop Manchurian ash mixed plantation. The interspecific relationship .would be considered to the first problem of forest management for larch and Manchurian ash plantation or mixed forests. The key to the cultivation avenue of natural mixed forests is to use the rule of natural succession for secondary forest and plant ... | | 对黑龙江省培育水曲柳混交林3种途径的可行性和主要经营问题进行了讨论。在人工混交林的培育途径中、立地条件的选择是培育成功与否的先决条件。在水曲柳与落叶松的人工混交林和人工、天然混交林中种间关系是森林经营首要考虑的问题。应用次生林天然演替规律及栽针、引针是天然混交培育途径的关键。研究认为,水曲柳与落叶松的混交林应以培育中小径级的落叶松、中大径级的水曲柳为培育目标。 | | 文摘来源 | |   |
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