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<正>据英国《金融时报》报道,近日刚刚结束访华行程回国的英国科技大臣大卫·维莱茨(David Willetts)日前透露了一项雄心勃勃的计划:英国希望促成国际合作,在30年之内帮助人类登上火星。据报道,维莱茨表示:"要让大国联合起来,力争在一、二十年后在中国、欧洲和美国的共同努力下,将人送上火星——这将是一件十分激动人心的事情。人类的探索欲永无止境。登陆火星计划的挑战带来 相似文献
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在珠峰东坡环线,可以饱览世界第一高峰珠穆朗玛峰、第四高峰洛子峰和第五高峰马卡鲁峰的壮丽景观,享受世间最美的雪山盛宴。嘎玛沟被誉为“世界上最美丽的山谷”,其最美的景色来自沟谷内的原始森林,林中瀑布溅出的水花形成一片片轻薄的水雾,雾气在林中飘渺,宛如仙境。陈塘的夏尔巴人至今还保持着独特的生活习俗,善饮鸡爪谷酒,而最令人称道的,还是他们超乎常人的登山天赋。 相似文献
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在"徒步天堂"尼泊尔,除安纳布尔纳地区的大、小环线外,最著名的当属珠峰地区的徒步路线.徒步者可登临三大高山观景点——楚空(Chhukhungri)、卡拉帕特(Kala Pathar)和高丘(Gokyo-ri).走向珠峰大本营(简称EBC)、第五湖,穿越海拔5300米的乔拉垭口(Cho La),沿途风景绝美,每天与雪山为伴,看得见几十座雪山,其中8000米级的有珠穆朗玛峰、洛子峰、卓奥友峰和马卡鲁峰.一路上线路清晰,路标随处可见,配套设施完善,每徒步1~2小时就会看到花园式的客栈,可以一边喝咖啡或奶茶,一边晒着太阳赏雪山. 相似文献
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OBJECTIVE: To report complications observed using a hydro-pool recovery system after general anesthesia in horses. STUDY DESIGN: Retrospective study. ANIMALS: Sixty horses. METHODS: Retrospective review of the medical records and quality of recovery from anesthesia of 60 horses that had surgical or diagnostic procedures under general anesthesia. RESULTS: Mean total anesthesia time was 182 minutes (range, 25 to 390 minutes). Mean time in the hydro-pool was 108 minutes (range, 20 to 270 minutes). One horse that had bilateral rear limb extensor weakness while recovering in a padded recovery stall was moved to the hydro-pool and maintained for 12 hours. Ten horses developed some pulmonary edema; in 3 horses, the signs of pulmonary edema were severe; and 1 horse died from related complications. One horse developed septic arthritis of an operated stifle joint, and 2 horses developed incisional infections. Two horses incurred multiple skin abrasions on the distal aspect of their limbs during violent attempts to leave the pool. CONCLUSIONS: A hydro-pool system was useful for recovering horses from general anesthesia when difficult recoveries were anticipated because of the horse's injury, size, demeanor, duration of anesthesia, or risk of further injury. Recovery using the hydro-pool was more time and labor intensive than a standard stall recovery. Pulmonary edema that required treatment was a serious complication that occurred in 17% of the horses. Careful closure of the skin with cyanoacrylate glue and pressure from bandages were used to prevent postoperative incisional infections. CLINICAL RELEVANCE: A hydro-pool system is a useful method for recovering horses from general anesthesia when difficult recoveries are anticipated. 相似文献
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中国北方农牧交错带中段近60年气温序列变化研究 总被引:2,自引:0,他引:2
利用1955-2014年中国北方农牧交错带中段10个气象观测站的气温时间序列资料,在分析气温变化结构的基础上运行气候突变检验和小波分析,用以解释气温变化的多时间尺度的复杂结构,分析不同时间尺度下气候气温变化的突变点和周期性变化规律。结果表明:近60 a来研究区内平均气温呈现普遍升高趋势,尤其在20世纪80年代以后升高趋势更加显著,达到99%置信度,升温速率达到0.45℃·10a-1,高于全国和全球的气温增长率。2008年后区域进入降温过程,冬季降温尤为明显,其原因是全球变化发生停滞;气候突变检验表明区域年平均气温的升温突变发生在1986年,显著升温开始于1991年,冬季升温突变时间最早,发生在1978年,夏季升温突变时间滞后,出现于1991年;周期检验表明区域内气温存在5~10 a和30 a的多重时间尺度结构的变化特征,预计2008年后年平均气温和季节平均气温增加速度将变缓,甚至可能发生变暖停滞。 相似文献
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回顾了新中国成立60年来,我国兽医防疫科技水平逐步提高,应对突发新的重大动物传染病的快速反应和疾病预防控制能力显著增强,消灭或有效控制了一些长期危害我国的重大动物传染病,兽用疫苗研究开发能力显著增强,取得丰硕成果,动物防控体系和人员队伍进一步健全完备,总结了60年来我国兽医科技事业的辉煌成就。 相似文献
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Díaz-Aparicio E Hernández L Suárez-Güemes F 《Tropical animal health and production》2004,36(2):117-121
The protection conferred by the reduced-dose Rev 1 Brucella melitensis vaccine in goats that had been immunized 5 years previously was evaluated. Sixteen goats vaccinated 5 years before with Rev 1 (1 x 10(5) cfu) and 5 non-vaccinated goats were challenged with B. melitensis 16M (4 x 10(5) cfu) using the conjunctival route. After giving birth or aborting, the goats were sacrificed and tissue samples were taken for bacteriological study. The challenge strain was recovered in 12%, of the animals from the vaccinated group, and in (80% of the control group. It is concluded, therefore that the use of reduced-dose Rev 1 protects goats vaccinated in endemic areas for at least 5 years after immunization. 相似文献
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