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Summarily, our research showed that HMFS had important effects on beings process and activity, such as embryo development, the framework and function of CNS, and that was can't be negligible; the effect of HMFS is an result of long-term exposure; the effect of short-term exposure may be partial and revertible, or helpful to the organism at some time; long-term HMFS exposure may lead to serious negative influence.
综上所述,本研究证明,亚磁空间对生命过程和生命活动具有不可忽视的重要影响,这些影响可涉及胚胎发育、神经系统结构和功能的改变;亚磁空间的效应是长期效应;短期的影响可能是局部的和易恢复的,有的甚至可能是有益的;但长期作用有可能导致严重的负面作用。
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Using the 294cc rotary engine, it can influence the maximum rpm and power of the engine output under the terms of using all kinds of length intake. Then it can find out the best length of intake of the rotary engine. In addition, under the terms of space limit of intake, it can influence the maximum rpm and power of the engine output when the intake is forced to limit on a certain length. To install a resonance in the intake system, according to the equation of Helmholtz, it can design the all kinds of size of the resonance. Using to change the volume and geometirc form of the resonance, it can find out the maximum rpm and horsepower of engine output in order to reduce the influence of the variation of engine intake length. Under the verification of the experimental result, this simple device can increase the rpm and horsepower of the rotary engine obviously to achieve the output performance that the engine requires to supply. Such the revisal of intake need the lower cost but it can obtain very obvious efficiency. It is a very feasible way.
藉由一具294cc的飞行器引擎,在使用各种不同长度进气道的条件下,对引擎所能输出的最大转速及马力有一定的影响,藉此找出该具引擎的最佳进气道长度;此外,在进气道因空间限制的前提下,进气道被迫只能局限某个长度以下时,在这种条件下,引擎所能输出的最大转速与马力等相关性能会随之受到影响,在进气系统加装一个共振腔,配合Helmholtz的方程式,设计出各种共振腔各部位的尺寸,利用改变共振腔的体积与几何形状,可以寻求增加引擎转速与输出马力的最大值,藉此降低进气长度变化所带来的影响,在实验结果的验证下,此一简单的装置可以明显的增加引擎转速与马力,以达到对引擎所需的输出性能要求,这样的进气系统修改所需的费用极低,但却可获得很明显的功效,是十分可行的方式。
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An experiment is conducted to understand the effect of high molecular polymer fluid on the flow measurement using rotameter. In the experiment, the rotameters, which are composed of different floating elements with different shapes and materials in measuring tubes, are employed to measure the high molecular polymer fluid with viscosity from 1 MPa·s to 2 692 MPa·s. Through analyzing the impact of high molecular polymer fluid on the different rotameters, a general rule is obtained for measuring high polymer fluid using rotameter.
为了了解高分子聚合物黏性溶液对浮子流量计流量测量的影响,采用由不同材料与不同形状浮子构成的浮子流量计分别对动力黏度从1 MPa·s到2 692 MPa·s范围的高分子聚合物溶液进行流量测量,根据对不同浮子流量计受黏性影响实验的分析,获得了高分子聚合物黏性溶液对浮子流量计测量影响的规律。
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Nuclear Run-on Assay was used to address the contribution of transcriptioninitiation to the regulation of five histones by YSV. Actinomycin D inhibitor studies were used to detect the mRNA half-life of five histones. SLBP weremeasured by Western blot assay to identify regulation of YSV on Pre-mRNAsplicing.
应用Nuclear Run-on Assay观察YSV对人肝癌BEL-7402细胞的五种组蛋白转录效率的影响;应用放线菌素D转录抑制法观察YSV对组蛋白mRNA半衰期的影响;应用Western blot检测SLBP的表达水平观察YSV对组蛋白mRNA加工的影响。
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A prediction model has been proposed to deal with threshold voltage shift as a function of 1MeV neutron flux and gate oxide thickness, and to deal with room-temperature annealing of threshold voltage shift induced-by 〓Coγ as a function of electric field and gate oxide thickness. The commonness and individuality of MOS device degradation between hot-carrier effect and ionizing radiation were investigated. The dependence of substrate current, gate current and threshold voltage shift due to hot-carrier on gate oxide thickness were simulated with MEDICI-2D simulator. The photocurrents of PN junction and bipolar transistor were studied. Their transient responses on varied bias voltages, pulse durations and absorbed doses were simulated. The influences of NPN base width on base and collector photocurrents were investigated. We also studied 1MeV neutron displacement damage in PN junction, and calculated reverse current leakage under the neutron flux of 2. 67×10〓 per square centimeter. 3 The study of nondestructive screening method for MOS radiation tolerance A theoretical and experimental study of nondestructive screening methods for radiation tolerance of nMOS and pMOS were firstly fulfilled. We determined the informative parameters pertinent to the method and proposed how to deal with experimental data and verify obtained results statistically, as well as make the required steps for nondestructive screening. Based on the experimental data of 180 samples of discrete pMOS devices, the relation between sample quantity and correlation coefficient, screening equation, and other significant results were obtained from the threshold voltage shifts of pre-and post-irradiation samples.
二、分立器件电离和位移辐射损伤响应研究在国内首次开展了电离辐射引起的氧化层阈值电压漂移和退火理论研究,编程计算了1MeV中子引起的MOS器件阈值电压漂移与中子通量及栅氧厚度的关系,计算了〓Coγ光子引起的阈值电压漂移及退火的时效曲线与纵向电场和栅氧厚度的关系等,对评估MOS型集成电路电离损伤和加固方法研究,以及论文中开展的MOSFETs无损筛选方法研究奠定了基础;分析了MOS器件热载流子损伤效应与辐射电离损伤效应之间的异同性,利用二维模拟软件MEDICI-2D模拟了衬底电流和栅电流,在不同栅氧厚度下随栅压的变化曲线,计算了热载流子效应造成的阈值电压漂移,研究结果对当前存在的以热载流子效应研究取代电离辐射损伤实验研究的设想,具有重要的参考价值;开展了PN结和双极晶体管电离光电流研究,计算了不同偏压、不同辐射脉宽和不同吸收剂量下PN结光电流的瞬时响应,计算了不同辐射脉宽下NPN晶体管基极电流和收集极电流的瞬时响应,以及基区宽度对NPN晶体管光电流的影响,研究结果对双极器件抗电离辐射损伤响应及加固方法研究具有重要意义;在国内首次开展了器件位移损伤的理论研究,分析了辐射产生的缺陷对电性能的影响,计算了注量为2.67×10〓cm〓的1MeV中子产生的缺陷对PN结反向电流的影响。
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In this thesis, we has made research in ScanSAR mechanism and imaging theory, which is the base of studies on imaging radiometric precision and accuracy, including causation and correcting technology of ScanSAR azimuth scalloping distortion.
本文对星载ScanSAR的工作机制和成像原理进行了研究,对ScanSAR成像处理器辐射精度的影响因素进行了理论分析,并研究了影响ScanSAR 方位向成像精度的扇贝效应的成因、对成像辐射精度的影响及其校正技术。
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The EC50 values of procymidone and Junduqing were more than 10g/mL. At the concentration of EC50, all the tested fungicides did not affect the number of sclerotium. But the weight of sclerotium fell more than 70% after treated with triazole fungicides. All the triazole fungicides had no effect on the germination of sclerotium below the concentration of 10μg/mL.
在EC50值浓度下,所有供试药剂对菌核形成及其数量均没有影响,但三唑类杀菌剂对菌核单重影响较大,各处理所形成的菌核单重降低率均在70%以上;而当药剂浓度在10μg/mL以下时,己唑醇等三唑类杀菌剂对菌核萌发均没有影响。
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Its amount has relation with acting load. The influence on sectional curvature of bending components is the greatest one, the ultimate curvature of corroding section decrease obviously, and the sectional curvature increases rather sharply with the increase of rust rate during the process of corrosion. The anti-cracking capacity of prestressed bending R. C. components may be damage. For the convenience of engineering usage and damage evaluation of structure, this paper presents a concept of sectional damage coefficient on the foundation of experimental and treatment study.
试验与理论研究均表明,受压区钢筋锈蚀后对普通钢筋混凝土和预应力钢筋混凝土受弯构件的承载力影响均不大,但对构件的正常使用性能有较显著的影响,受压区钢筋锈蚀过程中,截面刚度有较显著的下降,挠度及受压区混凝土压应变随锈蚀量增加而增加,增加值与使用荷载大小有关;受弯构件的截面曲率所受影响最大,锈蚀后截面的极限曲率有明显的下降,在使用荷载作用下,截面曲率则随钢筋锈蚀量的增加而有较显著的增加;而预应力混凝土受弯构件的抗裂度会下降。
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different sexual college students are different in social support status and social support factors, actualizing self-pride and confidence to future have important effect on the mental health of schoolboy, family supports and the feel of vesting in school have important effect on the mental health of schoolgirl.
不同性别大学生的社会支持状况和受社会支持因素的影响均不相同,男生更多受到自尊实现、对前途信心的影响,女生更多受到家庭成员的支持、在学校有无归属感的影响。
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F. pumila had the strongest capacity to adhere to walls, and it formed a quite good covering landscape by means of a large quantity of adventitious roots. Furthermore, it was tolerant to shade, and the effects of shading on its growth and landscape covering were very small. P. heterophylla had the rapidest growth and covering speed, and it adhered to walls by adhesive discs, but was defoliated in winter or after a long period of shading. The other three vines climbed walls using adventitious roots, and their adhering capacities were all relatively poor. However, E. fortunei still formed a relatively good covering due to its rapid growth and emerald leaf colour. After shading for four months, leaves of F, pumila, C. grandiflora, and P. serpens became thin, and accordingly their leaf weight per unit area significantly decreased. Shading also reduced chlorophyll contents of C. grandiflora and E. fortunei but enhanced those of F. pumila and P. serpens, It did not influence leaf thickness, leaf weight or chlorophyll content of P. heterophylla. Whether shaded or not, the relationship between Pn and PAR for each species could be expressed as y=alnx+b, and furthermore there was a significant (P.01) correlation between them. Pn and LCP values for all five lianas also significant (P.01) correlated. Shading reduced LCP values of P. heterophylla, C. grandiflora and E. fortunei but increased LSP of F. pumila.
结果表明,1薛荔对墙体附着力最强,它依靠大量的不定根吸固在墙体上,形成很好的覆盖效果,而且薜荔耐荫,遮光对其生长与覆盖的影响很小;爬墙虎的生长与覆盖速度最快,它主要依靠吸盘吸固墙壁,但在冬季或长时间遮光后出现明显落叶现象,影响其覆盖景观;其他3种都依靠不定根沿墙面攀援,附着力相对较差,但扶芳藤由于生长较快,叶色终年保持翠绿,也能形成相对较好的覆盖效果;2遮光4个月后,薛荔、凌霄和蔓九节的叶片变薄,相应地这3种植物单位面积的叶片重量都显著减轻;遮光还使凌霄和扶芳藤的叶绿素含量减少,使薛荔和蔓九节的增加,但对爬墙虎的叶片厚度、叶重和叶绿素含量都不产生明显影响;3无论遮光与否,5种植物的Pn与PAR之间的关系都可用y=alnx+b表示,并且都达极显著相关,Pn与光补偿点之间亦呈极显著相关;遮光还使爬墙虎、凌霄和扶芳藤的LCP下降,并使薛荔的光饱和点升高。
- 推荐网络例句
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I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""
客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。
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Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.
由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。
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Do not 'inflate' your achievements and/or qualifications or skills .
不要 '夸大' 你的业绩或成果,条件或者技能。