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The results showed the crystallinity of the modified PET decreased with the increase of the content of NPG, but the heat shrinkability was improved obviously. Amorphous polyester material that would not crystallize under usual circumstances was obtained, which made the modified PET film to be able to achieve a high degree of orientation during stretching, and it was heat shrinkable when the ambient temperature was higher than its T the effects of different drawing temperature and DR on heat shrinkage of copolyester film was discussed.
结果表明,通过NPG共聚改性的PET的结晶能力随NPG用量的增加而降低,热收缩能力有了明显的提高;无定型区增大,获得了在通常情况下不能结晶的PET无定型材料,从而使改性PET薄膜在拉伸时保持较高的取向度,并在高于其T时发生解取向热收缩;拉伸温度、拉伸倍数等拉伸工艺对于聚酯薄膜的热收缩率有着显著的影响。
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In the next Place, I was at a great Loss for Candle; so that as soon as ever it was dark, which was generally by Seven-a-Clock, was oblig'd to go to Bed: I remembered the Lump of Bees-wax with which I made Candles in my African Adventure, but I had none of that now; the only Remedy had was, that when I had kill'd a Goat, sav'd the Tallow, and with a little Dish made of Clay, which I bak'd in the Sun, to which I added a Wick of some Oakum, I made me a Lamp; and this gave me Light, tho' not a clear steady Light like a Candle; in the Middle of all my Labours it happen'd, that rumaging my Things, I found a little Bag, which, as I hinted before, had been fill'd with Corn for the feeding of Poultry, not for this Voyage, but before, as I suppose, when nt my Wall.
其次,我无法制造蜡烛,所以一到天黑就只得上床睡觉。在这儿一般七点左右天就黑下来了。我记得我曾有过一大块蜜蜡,那是我从萨累的海盗船长手里逃到非洲沿岸的航程中做蜡烛用的,现在早已没有了。我唯一的补救办法是:每当我杀山羊时,把羊油留下来。我用泥土做成一个小盘子,经太阳暴晒成了一个小泥盘,然后把羊油放在泥盘里,再弄松麻绳后取下一些麻絮做灯心。这样总算做成了一盏灯,虽然光线没有蜡烛明亮和稳定,但也至少给了我一点光明。
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It was found greater expression of NRP2-1 and NRP2-2 in pituitary, ovary, uterus and oviduct of ruttish Erhualian than corresponding tissues of ruttish Duroc, which suggested enhancing expression of NRP2 was favorable to increasing litter size. But the difference of NRP2 expression was not significant between two breeds, which suggested the key phase that NRP2 affected litter size was not oestrum probably, or NRP2 could enlarge cell signals and finally affect litter size ascribe that it was the receptor of nerve axon guidance factors.
NRP2-1和NRP2-2在发情期二花脸卵巢、子宫、输卵管中的表达量均大于杜洛克相应组织的表达量,推测NRP2表达水平高可能有利于提高产仔数,但两品种间表达差异不明显,推测NRP2影响产仔数的关键阶段可能不是猪的发情期;另外,NRP2 是神经轴突介导因子的受体,这些神经轴突转导的信号往往有级联放大的功能,虽然NRP2-1和NRP2-2在二花脸和杜洛克卵巢、子宫、输卵管中的表达差异不大,但二花脸有可能通过神经系统转导信号的级联放大最终引起一些效应激素或蛋白的急剧增加,从而提高排卵率或产仔数。
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The optimal operating conditions were as follows: concentration of polyaluminum chloride was between 50 and 60 mg/L as Al, the concentration of sodium oleate was between 5 and 10 mg/L, the pH values of the wastewater was between 4 and 5, the hydrolic retention time was 1 hour and the recycle ratio was between 10 and 20%.
此外,在考量成本与水质下,以多元氯化铝浓度 50 ~ 60 mg/L as Al,pH 调整至 4 ~ 5,捕集剂浓度为 5 ~ 10 mg/L,水力停留时间为 1 小时,回流比为 10 ~ 20%为最适之操作条件范围。
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Methods The total RNA was extracted from the brain of human embryo. The segment of open read frame of DOC-1 was amplified by RT-PCR and was further cloned into the vector, pMD18-T, and the prokaryotic expression vector, pGEX-4T-1, by turns, to produce the new construct pGEX-4T-1-DOC-1. After restriction enzymes digestion analysis and sequenced, pGEX-4T-1-DOC-1 was transformed into E.coli BL21(DE3). GST-p12 recombinant protein was expressed under IPTG induction and purified by affinity column.
从人胎脑组织中提取总RNA,经逆转录-聚合酶链式反应扩增DOC-1的CDS序列,再通过基因重组技术将该基因片段依次克隆到pMD18-T和pGEX-4T-1载体中,构建融合表达载体pGEX-4T-1-DOC-1,经酶切、测序鉴定后,用该重组质粒转化E.coliBL21,用IPTG诱导表达,Glutathione Sepharose 4B柱亲和层析纯化重组蛋白。
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A novel cable climbing robot applied to cable maintenance was introduced. It is centered orientable wheel-based, omni-directional cable climbing robot. The climbing mechanism of the robot and its working process were described. The driving force needed was analyzed, and the critical force needed for maintaining robot staying cable was calculated. The eccentricity allowed between center of robot and cable axis when the robot moving on inclined cable was discussed, and the least eccentric magnitude was calculated.
提出了一种应用于缆索维护的爬缆机器人机构实现方案,该机器人采用中心可转向的轮式驱动;介绍了机构组成及工作原理,在建立缆索曲线约束模型的基础上分析了机器人的驱动力,计算出了机器人能够在斜缆上工作所需要的临界驱动力;讨论了机器人在斜缆上工作时机器人轴和缆索轴不重合而出现偏心的原因,提出了减小偏心的方法,并计算出了为保持机器人对斜缆的适应性所需要的最小偏心量。
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Considerating over-all performance of mag nets, it was concluded that the optimal amount of doped-Ga was 0.5wt%. The other was that the grains size distribution of grains was narrow and grain distributed homogeneously as to microstructure of magnets when the amount of doped-Ga was 1 .Owt%;(3 ) In the magnets, there existed not only Nd2Fei4-xGaxB, but also GaNd concerning the Ga-elment form. The GaNd increased the amount of liquid and had favorable function during sintering, so it made for the increase of magnets density and the form of the second phase is good for improving coercivity.
综合考虑磁体的性能,最终得出添加0.5wt%为最佳的Ga添加量;(2)对于Nd_(15)Fe_(78)B_7+Ga系永磁体,当Ga的添加量为1.0wt%时,得到颗粒粒度分布范围窄,颗粒分布较均匀的显微结构;(3)元素Ga在磁体中不但以Nd_2Fe_(14-x)Ga_xB形式存在,而且以GaNd的形式存在,在烧结的过程中,增加了液相的数量,起助烧结的作用,有利于磁体密度的提高,形成第二相有利于矫顽力的提高。
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Some of them with visual loss, optic papilledema and orbital mass. B-scan ultrasonography revealed a cyctic tumor and a strong echo spot with spontaneous movement. On CT scanning, found was a well-defined hyperdensity mass in which there was a low density area. On MRI, the signal intensity of T1WI of cystic fluid was low or moderate and of T2WI was high, while the signal intensity of T1WI and T2WI of surounding scar tissue was still low.
结果 22例有反复的眶内炎症史及占位性病变体征,如眼睑及结膜充血水肿,眼球突出,眼球运动受限;6例有视力下降和视乳头水肿,并扪及肿物。B超示占位性病变内有液性暗区及自发运动光斑;CT扫描示高密度块影中央部有低密度区;MRI检查示囊液信号强度T1WI为低或中信号,T2WI为高信号,其周围的纤维瘢痕组织T1WI和T2WI均为低信号。
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The optimum temperature for paramecium culture was 25 ℃ and optimum propagation temperature was 10-30 ℃. The growth condition of paramecium was better when the pH value was in the range of 5.0-10.0, but the optimum growth environment was neutral or near to alkalescence.
草履虫生长的最适温度是25℃,最适繁殖温度在1030℃。pH值在5.0~10.0的范围内,草履虫的生长状况都较好,但最适合于在中性略偏酸的环境中生长。
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The proportion of staffs with college degrees or higher increased 18.6 %. The proportion of public health doctor was 9.7% in 1998 and was 8.7% in 2005. The educational level of village doctors did not change and more than half of them received the education of high school or special secondary school.(3) Compared to 1998, the immunization coverage rate of 2005 was increased. The highest incidence rate of infectious diseases appeared in 2005 and it was 3.953‰, and the lowest was 2.083‰in 2001. From 1998 to 2005, incidence of Hepatitis and Tuberculosis increased quickly. The incidence of Measles fluctuated greatly in theyears of 1998 to 2005 and the incidence of Pertussis and Tetanus keeped a low level.(4) When falling ill, the rural residents preferred the Village health departments. 310 residents know Iodine Deficiency Disorders , 73.8% of investigated school-age children had ever took parasiticide.
调查地区2005年与1998年相比,单苗接种率与五苗接种率均有提高,各县法定传染病发病率,2005年最高,为万分之39.53,2001年最低,为万分之20.83;调查的8个目标县,1998年~2005年计划免疫相关传染病,病毒性肝炎、肺结核发病率增高,麻疹发病率波动很大,百日咳、新生儿破伤风发病率保持在较低的水平; 4、村卫生室是农村居民首选的医疗机构,在患病后经常就诊的机构中,村卫生室选及率达68.3%,其次是乡卫生院,为42.3%;调查的居民中,有310名知道碘缺乏病,知晓率仅为39.6%;被调查居民中有607人家有学龄儿童,在这些学龄儿童中,448人曾服用过驱虫药,药物驱虫率为73.8%;曾发生过肠道寄生虫感染的儿童173名,肠道寄生虫感染率为28.5%。
- 相关中文对照歌词
- When Everything Was What It Was
- Sun Was High (So Was I)
- Jesus Was Our Saviour And Cotton Was Our King
- Before There Was Atlanta, There Was Douglasville
- Phil Cosby (Before There Was Atlanta, There Was Douglasville)
- I Didn't Say I Was Powerful, I Said I Was A Wizard
- All I Was Looking For Was You
- Hò Bha Mi, Hé Bha Mi (Hò I Was, Hè I Was)
- The Moon Was Yellow (And The Night Was Young)
- Stella Was A Diver And She Was Always Down
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力