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Compared to wet season, arsenic is difficult to mobile in dry season. Attenuation constant in dry season is 0.3082(1/km), but it is 0.0569(1/km)in wet season. If initial concentration of As was 500μg/L without other contamination source in down stream, arsenic would deceased to 50μg/L in down stream 7.5km in dry season but 40km in down stream 40km. As is dominate species in river running throμgh mining area.

砷在枯水期较丰水期难以迁移,通过计算得到,在枯水期砷的衰减系数K值为0.3082(1/km),而在丰水期为0.0569(1/km);在污染口浓度达到500μg/L时,下游没有其它的砷的污染源(或会影响砷衰减的其它污染源)时,枯水期砷会在下游7.5km之后浓度降到50μg/L,而丰水期则要在下游40km之后才能降到同样的值,所以在丰水期砷污染的影响的流域更广。

Nile downstream irrigation since ancient times, is a famous area, the Nile water fluctuations can lead to the fertile soil is conducive to a good harvest living in downstream Nyroth people, Beja people, Galla, the Somali people, life is closely linked with the Nile.

尼罗河下游自古以来就是有名的农业灌溉区,尼罗河水涨落可以带来肥沃的泥土,有利于农业丰收,生活在下游的尼罗特人、贝扎人、加拉人、索马里人,生活都同尼罗河息息相关。

The results were summarized as followings: the density of planktonic crustacea in middle reach was higher than that in the lower reach whereas the species abundance and community diversity index in the lower reach were higher than that in the middle reach; the planktonic crustacea communities presented high density but lower diversity in the upper part of the middle reach, lower density but high diversity in the lower part of the middle reach and estuary, and lower density and diversity in the lower reach except the estuary.

结果表明,汉江中下游江段浮游甲壳动物的密度分布呈现出中游高于下游的特征,而物种丰度和群落多样性指数则是下游高于中游;中游上段的属于密度高但多样性低的群落、中游下段和汉江口属于密度较低但多样性高的群落,下游除汉江口外属于密度和多样性均较低的群落。

Most of the families crowded in the back and south area of the Changjiang River. The three provinces, Kiangsi、 Nanking and Zhejiang, located in the back area of the Changjiang River, are dense set. Kiangsi is the densest place. The two provinces, Fujian and Guangdong, located in the south of the Changjiang River, are vice-dense set.

长江下游流域及以南地区集中了绝大多数谱牒序跋所涉家族,其中长江下游流域的江西、南京、浙江三政区是分布的密集地,以江西为最密集,长江下游以南的福建、广东为分布的次密集地。

A study on heavy metal pollution of water,bottom mud of river, and agricultural land soil was conducted in lower reaches of the smeltery. It indicated that heavy metal pollution in lower reaches of smeltery changed regularly and a mathematical pattern was suggested.

摘要研究冶炼厂下游河道水质、河底污泥、农田土壤的重金属污染状况,明确了冶炼厂下游环境的重金属影响的变化规律,提出了冶炼厂下游土壤重金属污染的数学模型。

Based on the unique characteristics of the Yellow River and previous research on its ecological water requirement, the present paper recommends that the water requirement for transport in the flood season and base ecological flow in non-flood season should be both included in the ecological water requirement. The water requirement for transport is 80 × 108-120 × 108 m3 per year if the bankfull discharge carries the largest sediment and contaminant load over a long period of time. The base ecological flows in non-flood season at Huayuankou and Lijin stations are 80 × 108-100×108 m3 and 50 × 108-60 × 108 m3, respectively.

通过分析黄河下游1958~2000年实测生态可用水,探讨生态需水量内涵,根据黄河特殊性及黄河生态需水量的研究现状,将维持和保护河流功能的黄河下游生态需水量分为汛期输运水量和非汛期生态基流量,在平滩流量输运能力最强的前提下,估算黄河下游汛期输运水量为80~120亿m3,根据实测资料估算作为黄河下游水量控制断面花园口水文站和作为河口地区水量控制断面利津水文站的非汛期生态基分别为80~100亿m3和50~60亿m3。

We then add boundaries delineated forward/backward facing reflected shock, Mechanical equilibrium, M2=1 and reflected shock strong/weak separating conditions on the (M0,q1) map of shih(2004). This is followed by systematically investigating multiply possible three shock theoretical solutions of steady Mach reflections in perfect triatomic gases. Pressure-deflection shock polar solutions are used to help illustrate different solution behaviors of these theoretical three-shock solutions. M0 is flow Mach no. upstream of incident shock, M1 is flow Mach no. downstream of incident shock, M2 is flow Mach no. downstream of reflected shock,q1 is flow deflection downstream of incident shock.

随后本文由石(2004)论文中加入前后分界、机械平衡、M2=1及强弱分界条件,然后有系统地探讨三原子分子理想气体(r=1.2857 )稳态马赫反射参震波理论多重解之交点及其对应之压力-转折角震波极图解,并建构出此三原子分子理想气体稳态马赫反射流场三震波十阶多项式理论解於(Mo,q1)平面上之解域图,其中M0为入射震波上游流场马赫数,M1为入射震波下游流场马赫数,M2为入射震波下游流场马赫数,q1为入射震波下游流场转折角。

The quasi-perpendicular collisionless shock consists of foot, ramp and a series of overshoots and undershoots, after travelling back upstream for a short distance, the reflected protons gyrate back into the downstream where an temperature anisotropy is formed due to an anisotropy of velocity distribution, then excite Alfvén ion cyclotron waves and mirror waves that dissipate the kinetic energy into heat; At quasi-parallel collisionless shocks, the reflected protons can travel far upstream, and lead to the generation of ion beam instabilities which excite large-amplitude right-hand polarized ultralow-frequency resonant waves whose frequencies are are about〓 These waves are convected back downstream by solar wind and gradually merge to form the downstream state, in the meantime new waves are generated continuously in the upstream, this process where ULF waves are generated and merge into downstream state is cyclical.

准垂直无碰撞激波系由根部、斜坡区以及一系列的低冲和过插组成,被激波反射的质子向激波上游运动很短的距离就在回旋作用下再次向下游运动,和激波发生相互作用以后进入激波的下游,在激波的下游引起质子速度分布的各向异性,进而引起激波下游温度的各向异性,激发起Alfvén离子回旋波和镜波,将激波上游的动能耗散成激波下游的热能;在准平行无碰撞激波(θ〓=10°)情况下,这部分质子能向激波上游运动很大一段距离,并在激波的上游激发起束流不稳定性,引起大振幅的低频波动。

The reaches of greater dike breach risk mainly distribute in wandering reaches.(4) The dike breach risk of the south bank is relative higher in wandering reaches.(5)The dike breach risk of the north bank is higher than the south bank in winding reaches. Simultaneously, the evaluation results manifest that the evaluation indexes system established from the locomotion of incoming water and sediment load, the regional crustal stability, the evolvement of river regime and the stability of river dikes, can reflect the actual situation of hang river in the lower Yellow River more fully. The application of multi-hierarchical fuzzy

评价结果同时表明,从水沙运动、区域地壳稳定性、河势演变和堤防稳定性4个方面建立评价指标体系,能够更加全面的反映黄河下游悬河的实际情况;运用多层次模糊综合评判法能够较好地解决影响因素众多、作用机制复杂的悬河决溢风险问题;运用GIS技术强大的空间分析功能,使黄河下游悬河不同空间位置的决溢风险得到了量化,可以客观地反映黄河下游河道不同空间位置决溢风险的差别,对于指导防洪和河道治理的实践具有重要的现实意义。

1、Cur inhibits K562 cells growth and induces cell apoptosis may be correlated with the down-regulation of p210~、inhibition of protein tyrosine phosphorylation and the signaling molecules such as p-Erk1/2、c-myc which are relevant with cell growth and apoptosis; 2、Cur synergizes STI571 to inhibit K562 cell growth and induce cell apoptosis may be correlated with the down-regulation of p210~、inhibition of protein tyrosine phosphorylation and the signaling molecules such as Hsp90、PKC which are relevant with cell growth and apoptosis; 3、Cur reverses the resistance of K562/G01 cells to STI571, and synergizes STI571 to inhibit K562/G01 cell growth and induce cell apoptosis; 4、Cur inhibits human originated CML CD34~+ cell growth、induces cell apoptosis, and enhances STI571 to down-regulate the expression of p210~, finally inhibit cell growth and induce cell apoptosis.

从以上实验结果我们得出如下结论: 1、Cur抑制K562细胞增殖、诱导细胞凋亡的作用可能与其下调p210~、蛋白酪氨酸磷酸化水平以及抑制下游p-Erk1/2、c-myc等信号分子有关; 2、Cur协同STI571抑制K562细胞增殖、诱导细胞凋亡的作用可能与其下调p210~、蛋白酪氨酸磷酸化水平以及抑制Hsp90和下游PKC等信号分子有关; 3、Cur可逆转K562/G01细胞对STI571的耐药性,并与STI571协同抑制K562/G01细胞增殖和诱导凋亡,其抑制K562/G01细胞增殖、诱导细胞凋亡的作用可能与其下调p210~、蛋白酪氨酸磷酸化水平以及抑制下游Procaspase-3和NF-κB等信号分子有关; 4、Cur可抑制来源于CML患者骨髓的CD34~+细胞的增殖并诱导其凋亡,还可协同STI571下调CML CD34~+细胞p210~表达,进而协同抑制细胞增殖、诱导细胞凋亡。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。