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1.
分别测定了纯化的公驼精清诱导排卵因子7的活性和固定部分肽类的小肽氨基酸组成,证明活性位序易降解,这一特性与其所含的丝氨酸、谷氨酸、甘氨酸等有关。  相似文献   

2.
应用紫外分光光度计扫描2峰精液品质和成分不同公驼精清的结果表明,正常精清出现19个蛋白和多肽组分,而品质不良的公驼精清仅为13个吸收峰;两者在碱性蛋白、酸性蛋白组分以及诱导排卵因子(OIF)的浓度和成分上,均存在明显的差别.  相似文献   

3.
公驼精清经DEAE-纤维素离子交换层析,共收集到7个蛋白组份,回归本动物,确定了可以诱导母驼排卵的组份,并经等电聚焦电泳加以证实,此外,分析了公驼精清的氨基酸组成,并对活性组份试行进一步纯化。  相似文献   

4.
单切口双结扎缝一针公驼去势法公驼去势多沿用双切口不缝合的夹板骟及烧烙骟,其创口易感染、愈合慢,术后出血及阴囊内容物脱出常有发生。为克服上述缺点,笔者采用单切口、双结扎、缝一针的方法对118峰公驼去势,均收到较好效果。手术方法驼左侧卧保定,术部常规消毒...  相似文献   

5.
从双峰驼精清内分离出一种新的活性多肽。这种多肽是将公驼的精清经DEAE—纤维素和SephacrylS—200柱层析加以初步分离。在试验动物上测试,找到可以诱发母兔排卵的活性多肽。用十二烷基硫酸钠—聚丙烯酰胺凝胶电泳(SDS—PAGE)和等电聚焦电泳(IEF)测定了这种多肽的分子量和等电点。  相似文献   

6.
材料和方法 (一)试验条件 1.随机选择临床健康的成年新疆驼(双峰驼)39峰,其中母驼14峰、公驼3峰、去势驼22峰,年龄6~26岁。试验当时的体温平均37.5℃(37.1~38.4℃)。驼群放牧,试验前由放牧地赶来,休息约2小时后开始测试。 2.试验驼在四柱栏内保定,栏内地面垫以3~4厘米厚的木板,测试时骆驼自然站立在此木板上,四肢不互相接触,身体任何部分亦不与栏柱接触,以保证良好的绝缘状态。 3.使用国产ZXD—1型热笔式心电图机,普通照明电源,妥善地接好地线(在室外湿地上埋入约50厘米长的细铁棒),严格按照该型心电图机的使用规程进行操作。  相似文献   

7.
20 0 0年 4月初 ,内蒙古阿拉善左旗一些骆驼群中发生以咳嗽、呼吸困难和肌肉脓肿的疾病。在 7群 42 0 0峰骆驼中发病3 3 0峰 ,发病率为 7.9%。经采取综合防制措施使疫情得到控制。症状 发病初期 ,部分骆驼出现咳嗽 ,按压肺区有痛感 ,病驼常伸颈出现呼吸困难 ,采食障碍 ;无咳嗽症状病驼按压肝区、腰部有痛感 ;病驼肌肉有串珠样或鸽蛋大小脓肿。随病程发展 ,病驼喘气、食欲废绝 ,出现贫血和渐进性消瘦 ;各部肌肉脓肿增至鸡蛋或皮球大小 ,脓肿由硬变软 ,大者可排脓 2— 3kg ,大的脓肿如发生在腿部常因自行破溃引起病驼跛行。多数病例因治疗…  相似文献   

8.
双峰驼初乳IgG的分离纯化及其向幼驼的转移   总被引:3,自引:0,他引:3  
通过跟踪检测内蒙古阿拉善双峰母驼初乳IgG和幼驼血清IgG的动态含量,探讨了影响幼驼由母体获得被动免疫的因素。采用硫酸铵沉淀法2次沉淀乳清蛋白,再结合离子交换层析方法,从双峰驼初乳中分离纯化驼IgG;再用SDS-PAGE鉴定其纯度,测定其分子质量;用分离纯化的驼IgG免疫家兔,制备效价至少为1∶32的兔抗驼IgG抗血清,采用单向免疫扩散法测定双峰驼初乳和幼驼血清IgG含量。揭示了初乳IgG向幼驼血液的转移模式,为生产中更好地饲养幼驼提供科学依据。  相似文献   

9.
一、问题的提出 “百叶干”即瓣胃阻塞。在缺水和饲草细碎而坚硬条件下的耕牛,较常发生。但同样是反刍兽的骆驼,究竟患不患“百叶干”呢?过去我们认为患,那是因为不但书本上有,而且总以为骆驼与牛同属反刍亚目,牛有百叶干一病,故骆驼有“百叶干”便是理所当然的事了。因此,在我校的驼病讲义上,一直编有骆驼百叶干这个病。直到71年师生共同讨论编写“驼病防治”新教材时,一位阿右旗学员提出:骆驼没有“百叶”(重瓣胃),怎么会患“百叶干”这个病呢?当时大家查阅了有关驼病的部分资料[如《元亨疗马牛驼经全集》、  相似文献   

10.
溶酶体是一种富含多种酶的细胞内消化器,在细胞代谢过程中主要扮演了“清洁工”的角色。当溶酶体降解系统感知外源或某些信号刺激时,可促进其降解酶的释放,发挥降解作用。重要的是,溶酶体在细胞自噬及细胞凋亡中具有重要的调控作用。溶酶体可参与细胞凋亡,并通过自噬降解途径维持细胞内环境稳态。另外,溶酶体功能异常还可诱发多种疾病,如溶酶体贮积症、肿瘤、禽类痛风等。本文以溶酶体的降解途径作为背景,概述其在细胞自噬和细胞凋亡中的调控作用,对其调控异常引起的相关疾病进行综述,为靶向溶酶体的降解技术在相关疾病治疗方面提供部分参考依据。  相似文献   

11.
The EU's strategy for Russia since the end of the cold war has to a large extent failed, and the direct consequences are the currently deadlocked EU-Russia relationship. There are three reasons for this: the EU and Russia's respective strength and status relative to each other have been changing since the beginning of this century; the EU's strategy towards Russia has been more fragmenting in recently years; and the American factor. The EU-Russia relations could continue to be in poor shape in the years to come, and it is very likely sometimes even further worsening. But the two sides would refrain from extreme measures and prevent their relations from sliding into real cold war.  相似文献   

12.
In this paper, the author has made a thorough study over the new generation of American China Watchers. Most of the pages are devoted to a detailed comparison between the old generation and the young generation of American China Watchers regarding to their background, education, and views over China. At the end of the paper, the author also gives some policy suggestions for both the Chinese and U.S. government based on the findings in this study.  相似文献   

13.
1. Introduction
On the morning of April 1st, 2001, a U.S. EP-3 surveillance aircraft was conducting an intelligence flight along the Chinese territorial border in the airspace south-east of China's Hainan Island. Two Chinese fighter jets intercepted the spy plane and followed its flight, as is considered ordinary international practice. For reasons unknown, the EP-3 airplane made a sudden maneuver and crashed into one of the Chinese planes. The Chinese plane dropped into the sea, the pilot missing. The U.S. spy plane was also severely damaged. It intruded into Chinese territorial space and landed on Hainan Island without official permission from the Chinese side. After landing, the spy plane and 24 crew on board were detained by the Chinese authorities. This air collision episode was the first of its kind in the China-U.S. relations and an urgent diplomatic crisis ensued.  相似文献   

14.
正The new central leadership has highlighted the strategic importance of better relations with neighboring countries and the construction of a solid foundation for China’s neighborhood strategy so as to create favorable conditions for Chinese development.1China is strengthening top-level strategy in foreign relations,focusing on global-level relations and staying committed to relations  相似文献   

15.
China and Brazil established a strategic partnership in 1993. The bilateral ties have seen rapid development in almost all areas. However, there are eight myths surrounding the China-Brazil relations. These myths are the result of a lack of mutual understanding as well as the misconceptions result misconceptions of the western observers and media. These misunderstandings have of have jeopardized images of the China-Brazil relations and also hindered further development of their bilateral relationship.  相似文献   

16.
The successful hosting of the CICA summit has drawn great attention The attention to China's "host diplomacy". Analyzing new features of China's "host to "host diplomacy" during this new period, this paper will look at the opportunities and challenges facing China's "host diplomacy" and discuss the problems that China should address in order to do a better job in this regard and bring its "host diplomatic advantages" into full play.  相似文献   

17.
Since the beginning of the 21st century, the overall rise of the Asian geographic plate has been particularly prominently. The overall rise of Asia reflects the improvement of a large number of developing countries in Asia. The long-occupied aggressive status of the United States and Europe is weakening, and the overall rise of Asia appears more highlighted, and its impact upon the world seems more intense.  相似文献   

18.
正On the morning of April 2,2014,CAFIU held the 11th Executive Council Meeting in Beijing.Present at the Meeting were Member of the Politburo of the 17th CPC Central Committee and Vice-Chairman of the 11th CPPCC National Committee Mr.Wang Gang,ViceChairman of the 11th NPC Standing Committee and President of CAFIU Mr.Zhou Tienong,ViceChairpersons of the NPC Standing Committee Mme  相似文献   

19.
正I am very pleased to attend the 11th Executive Council Meeting of CAFIU,and would like to express my hearty congratulations to President Yan Junqi,the new leadership and the newly-elected Executive Council.I also want to express my sincere thanks for choosing me to be the Honorary President of CAFIU!  相似文献   

20.
正I.Political Parties and Government Sector Lu Yan Director,Beijing Municipal Commission of Commerce Tong Guili Member,Standing Committee of the CPC Municipal Committee of Hangzhou,Zhejiang Province Secretary,CPC Working Committee,Administrative Commission for the Sci-Tech and Innovation Industrial Park in west Hangzhou City  相似文献   

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