说明的
- 与 说明的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Which means there's a whole hell of a lot of money behind her.
说明她背后有着庞大的资金支柱
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With the IAP Prediction System of Short-term Climate Anomaly, two sets of seasonal and extra-seasonal ensemble hindcasts have been performed during the period of 1980~1994 in order to assess the prediction skill of the IAP PSSCA with two different schemes The difference of the two schemes is in the different version of AGCM used, with the IAP AGCM 1 1 in one scheme and the IAP AGCM 1 2 with an improved surface albedo parameterization in the other Comparisons of the hindcast results with the observations show that IAP PSSCA is capable of predicting the precipitation anomaly to some extent In the eastern China largely affected by Asian monsoon and SST anomalies, the prediction skill is relatively high, especially in the Southeastern China where the anomaly correlation coefficient can reach as high as 0 50 in the severe flood and drought years This may suggest that the possible mechanisms for these severe disasters have been well captured by the IAP PSSCA The prediction skill is higher for the modified model AGCM 1 2 as the model's climatological state is well simulated This indicates that models with reasonable land process will improve the prediction skill for short-term climate prediction
利用中国科学院大气物理研究所研制的短期气候距平数值预测系统,种版本的大气环流模式:AGCM 1.1和AGCM 1.2,分别以2月11~19日的9天大气观测值为初始场,以给定海温为边界场,对1980~1994年的15年的降水异常进行了两组集合后报试验。对试验结果进行定量评估表明:IAP PSSCA对降水异常具有一定的预测能力,特别是在中国东部受东亚季风及海温异常影响的地区,IAP PSSCA具有较高的预报技巧,其中以东南区域(包括江淮流域和华南地区)最高,尤其是对有洪涝灾害的降水异常年,距平相关系数在0.50左右,接近可供业务使用的要求,说明模式能够抓住在东亚季风区存在的某种物理机制,从而提高了这一地区的预报技巧;另外,两个大气环流模式相比,改进了地表反照率的AGCM 1.2的15年集合平均预测技巧略高于AGCM 1.1,特别是在华北地区,预测效果有明显提高,这表明改进地表反照率从而改进了模式的气候平均态的模拟,能提高气候模式的预测能力,说明较好的陆面过程引入模式对短期气候预测是有益的。
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As to'Cabemet Sauvignon'and'Queen of Vineyard', which belong to the'West Europe Cultivars Group', no obvious decline of Fv/Fm was found in their potted plants even under severe drought stress. Their photosynthetic abilities also greatly recovered after rewatering, i. e. no serious photodamage was formed in these cultivars under drought stress. Between them, the φPSⅡ of 'Queen of Vineyard'under severe drought stress was much lower than that of'Cabernet Sauvignon', which suggested that the light use efficiency of the former was much lower than the latter under severe drought stress. The potted plants of'Autumn Royal'and'Rizamat' sustained high Fv/Fm and φPSⅡ before moderate drought stress, but seriously declined under severe drought stress, which indicated that these cultivars had a weak resistant ability to extreme drought stress. A hybridized cultivar of Vitis vinifera L. and V. labrusca L.,'Red Double Taste', its Fv/Fm and φPSⅡ expressed mild decline along drought stress grade.φPSⅡ of'Red Double Taste'was the highest among seven cultivars under severe drought stress condition, which might closely connected with its high photorespiration activity. Another new cultivar,'Red Globe', and a rootstock,'1103Paulsen', the Fv/Fm and φPSⅡ of their potted plants declined markedly under slight drought stress, which suggested that they held a weak ability to defend against photoinhibition.
西欧品种群的赤霞珠和葡萄园皇后,其盆栽苗的Fv/Fm直到重度干旱胁迫下仍没有明显的降低,且复水后光合能力恢复程度较高,即干旱没有给这两个品种造成严重的光破坏,而两个品种之间,葡萄园皇后在重度干旱胁迫下的φPSⅡ明显低于赤霞珠,说明其光合器官在严重干旱胁迫时对光能的利用率较差;新品种皇家秋天和东方品种群的里扎马特在中度干旱胁迫下仍可维持较高的Fv/Fm和φPSⅡ,但在重度干旱胁迫下则降低幅度较大,说明其抵御极端干旱胁迫的能力较差;欧美杂种红双味的Fv/Fm和φPSⅡ随着干旱胁迫程度的增加呈现平缓的下降趋势,而且其φPSⅡ在重度干旱胁迫下是七个品种中最高的,这应该与其此时仍维持较强的光呼吸活性有关;红地球和砧木1103Paulsen的Fv/Fm和φPSⅡ在轻度干旱胁迫下就明显下降,表明干旱条件下其抵御光抑制的能力较差。
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Furthermore, out of 497 fAFLP markers, 80 special bands were found to be able to distinguish the four groups from each other and may be applied for germplasm characterization and molecular assistant classification of Meretrix clam.4 Molecular classification of two species of Meretrix clam based on fAFLP and ITS sequences4.1 The results of fAFLP maker analysis of S, G and W showed that each group had their own specific loci among which there were 53 special loci in W group, much more than those of S group (14) and G group (21). Among the 53 loci, nine were all dominant loci. These unique loci could be taken as molecular markers to distinguish W from other groups. The genetic similarity indexes and distance matrix between S and G groups were 0.9585 and 0.0424 respectively, but the genetic similarity indexes and distance matrix between W group and S or G group was 0.7939 or 0.7941, and 0.2308 or 0.2305 respectively. The results revealed that significant difference existed between W and S or G groups in molecular genetic structure. The phylogenetic trees by the methods of UPGMA and NJ also indicated that S and G populations were very closely related, while W population was a relatively independent cluster, lying beyond the species which S and G belong to.4.2 The internal transcribed spacer region of the rDNA from S group, G group and W group were PCR amplified and sequenced. The results showed that the size of ITS ranged between 1266-1269bp in W group, while those in G and S groups were 1614bp and 1520bp respectively. The GC content ranged 62.32-62.62% in W group while it was 61.77% in G group. The genetic distances between three populations of W group were 0.001~0.003, but it was 0.110 or 0.147 respectively between W group and G group or S group. Phylogenetic trees by NJ method also showed that G group was very closely related to S group, while W group was a relatively independent cluster.
在457个总扩增位点中找出了53个W的特有位点,远多于S群体(14)和G(21)群体,而且在53个特有位点中有9个出现频率为100%的位点,这些位点可以作为区分其它2个群体的特征性标记;S– G群体特有的位点有112个,其中有4个位点出现频率为100%,可作为S– G群体区别于W群体的特征性标记。S群体和G群体间的遗传相似性系数为0.9585,遗传距离只有0.0424,在NJ和UPGMA法构建的亲缘关系的树状图上均首先聚在一起,说明二者的亲缘关系很近,应属于种内群体间的关系;而W与S和G的遗传相似性系数均较小(0.7939和0.7941),相对遗传距离很大而且十分相近(0.2308和0.2305),在亲缘关系树状图上单独分出一支,也表明W与S和G群体间的亲缘关系较远。4.2 ITS序列比较分析通过对白壳文蛤、山东文蛤和广西文蛤的ITS序列扩增电泳、PCR-RFLP分析和ITS序列分析发现,W的ITS序列长度在1266-1269 bp,而S和与G的ITS序列总长度分别为1520 bp和1614 bp;从ITS1和ITS2长度来看,W分别为739-741 bp和316-317 bp,S为895 bp和414 bp,G为987 bp和416 bp;而从ITS碱基组成来看,W的GC含量在62.32-62.62%之间,而G群体为61.77%。W的3个壳色不同群体间的遗传距离仅0.001、0.002和0.003,S与G群体间的遗传距离是0.010,说明W群体内变异很小,而S与G群体间已出现明显的遗传分化,但还均属于种内群体间的遗传变异;而W与G和S的遗传距离分别达到0.110、0.147,两个类群差异显著,已远超出种内群体间的遗传变异。
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Reactive oxygen species causing DNA oxidative damage comes from two kinds of ways:one is from cellular normal physiological metabolism;the other is from outer environment.Redox-sensitive green fluorescent protein was expressed in Saccharomyces cerevisiae.Recombinant cells were evaluated in monitoring the changes in the redox state of living cells when challenged with toxicologically relevant metal ions NaAsO_2 or Pb(NO_3)_2 by measuring emission intensity at 510 nm with a Hitachi F6500 fluorescence spectrophotometer,roGFP expressed in yeast responded not only to typical membrane-permeant oxidants H_2O_2 and reductants DTT,but also to toxicological metal ion-induced intracellular redox changes in a dose-dependent manner.Moreover,exposure of yeast cells to NaAsO_2 or Pb(NO_3)_2 at concentrations that induced redox changes reported by roGFP caused up to 2~3 fold increases in DNA mutation frequency.This mutagenic effect was largely caused by oxidative stress since blocking the production of hydryl radicals with thiourea significantly reduced the mutation rate as well as delayed the cell death.
本文将对氧化还原状态变化敏感的绿色荧光蛋白roGFP1-R12,在酵母细胞中实现了多拷贝强表达;荧光扫描经强氧化剂H_2O_2和还原剂DTT以及环境中重金属NaAsO_2或Pb(NO_3)_2处理后的酵母细胞悬液,测定510 nm处的荧光发射强度结果显示,表达的绿色荧光蛋白对氧化还原水平敏感,且在510 nm处的荧光强度与一定的重金属浓度呈正相关,即roGFP1-R12在510nm处的荧光发射值随重金属浓度的增高而增强,从而说明重金属对细胞的毒性在一定程度上很可能是通过破坏细胞内的氧化还原平衡发生作用;同时通过该绿色荧光蛋白对胞内氧化还原状态变化的响应情况可以来实时检测环境中的重金属;遗传学的点突变频率及致死率实验数据表明,重金属能导致菌体的点突变频率和致死率升高,且活性氧的清除剂巯基脲能明显降低这种点突变和致死率,说明由重金属引发的这种点突变和致死效应在很大程度上是依赖于重金属对细胞诱导产生的氧化胁迫。
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In the ethnography research study, an investigator(a attempts to provide generic propositional answers to questions about social life and organization; strive to pursue such an attempt in a spirit of unfettered or naturalistic inquiry; utilize data based on deep familiarity with a social setting or situation that is gained by personal participation or an approximation of it; develops the generic propositional analysis over the course of doing research; strives to present data and analyses that are true; seeks to provide data and /or analyses that are new; and (g presents an analysis that is developed in the senses of being conceptually elaborated, descriptively detailed, and concept-data interpenetrated
在民族志学中研究研究,调查员(一尝试提供关于社会的生活和组织的总称问题的建议答案;努力解开脚链在精神中追求一种如此尝试或自然的质询;利用以有一种社会的设定或被个人分享或一个它的近似值得到的情形深亲密为基础的数据;发展在做研究的课程上的总称建议的分析;努力呈现数据而且分析那是真实的;提供数据及分析那的找寻是新的;而且( g 呈现一项被发展的分析在某种意义上概念地被详细地说明,描述地详细说明,和观念-数据渗透
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Chapter one of this text has recommended the foreign insurance to apply financial economy to the products pricing method of insurance company, but these methods have not explained how to determine the fair premium of the multiple-line insurance company .In order to solve many business line insurance company pricing problem, chapter two introduce an very important model in insurance company capital allocation field - MR capital allocation model, through deriving capital allocation formula and simulation analysis indicate MR model allocate multiple- line insurance company capital scientifically. In order to apply MR model to non-life insurance pricing, chapter three will extend MR model to introduce loss 3 and layer P . Since the premise of MR model is a certain market price of loss, the chapter four will use the risk-neutral probability transformation technique to get the market value of loss. Under lognormal distribution, we will use location parameter shift and proportional PH transformation to illuminate the technique. The final chapter combines the prior sections result to deduce out the fair premium formula, and apply it to price the catastrophe insurance.
本文的第一章介绍了国外保险业将财务经济学应用到保险公司产品定价的方法,但是这些方法都没有说明如何确定多业务线保险公司的公平保费;为了解决多业务线保险公司定价问题,第二章引入保险公司资本配置领域非常重要的一个模型—MR资本配置模型,通过推导资本配置公式及模拟分析表明MR模型科学地配置了多业务线公司的资本;为了将MR模型应用到非寿险公司的定价中去第三章扩展了MR模型,引入了损失β和层β的概念:由于MR模型的前提条件是有一个确定的损失市场价值,第四章利用风险中性转化方法获得损失的市场价值,在损失为对数正态分布的条件下,通过位置参数转化和比例危险转化方法给出了实例说明;第五章结合前几章的结果给出非寿险公司公平保费的定价公式,并运用它给出了巨灾保险价格的模拟分析。
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Some strains of the nematode-bearing bacteria were bioassayed for their parasitism. All these bacteria can totally not grow or grows badly on the media incorporating the extracts of pine trees, indicating some substances existing in the trees will harmful to the bacterial strains, which is further convinced by preliminary inoculation showing that single bacterial species will not infect Pinus thugbergii. Hence, the growth and reproduction of the nematode-carrying bacteria, which could produce toxic substances causing the death of the tree cells, is closely related to the nematodes, when they first enter to the trees. In the same time, the activity of bacteria improved the circumstances for which nematodes are living, which in turn will beneficial to the growth of nematodes. Thus, there is a complicated interaction among nematodes, bacteria, and pine trees.
对松材线虫携带的细菌的部分菌株进行了寄生性测定,表明这些细菌在添加松树提取液的细菌培养基中不能生长或基本不能生长,这说明松树体内可能存在某些不利于细菌生长的物质,同时初步的接种试验证实,单独的细菌接种不能感染健康的黑松,因此,线虫携带的致病细菌在最初进入树体时,其生长和繁殖与线虫密切相关,结合细菌产生的毒性物质可造成黑松细胞死亡的情况,说明细菌的生长与线虫有关,同时,细菌的活动改变了线虫在松树内的生长环境,使环境变得有利于线虫的生活,因此,线虫、细菌和松树三者存在着复杂的生物关系。
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Based on the study of chronology and geochemistry of Cd in sediments of the Dongting lake area, we have established an ARIMA model of Cd and Cd/Ca in Quaternary and Holocene period respectively, and discussed Cd evolutionary regularity according to the fitted value and predicted value of the model The results revealed that the Cd evolution has remarkable periodicity of ecogeochemistry cycles, and is correlated with the climate change of alternative cold and warm Cd/Ca is changed with climate, from which the evolutionary history of regional ecogeochemistry can be inferred The changes of Cd and Cd/Ca are basically simultaneous, which showed that the change of Cd is mainly a natural evolution Cd in sediments will rise in the next 30 years and then tend to decrease From the regularity of ecogeochemistry indexes and global environment variation, it is concluded that the natural environment is the dominant factor affecting the Cd deposition
在对洞庭湖区沉积物钻探取样的年代学和地球化学研究基础上,分别建立第四纪和全新世时期Cd和Cd/Ca的时间序列演化ARIMA模型,并据模型的拟合值及未来预测值对区域地球化学环境中Cd的演化规律进行了探讨,结果显示区内Cd的演化有较显著的周期性--环境地球化学旋回,与气候多次冷暖的交替有关;沉积物Cd/Ca受气候环境等控制,分析该比值的变化规律可推测区域环境地球化学的演变历史;Cd和Cd/Ca两者的变化基本同步,说明该区Cd的演化主要为自然演化;未来30年内沉积层的Cd含量仍有逐渐增高的趋势,之后转为降低。从本区环境地球化学指标的时间变化规律及其与全球环境变化的相关联中说明自然条件是区域镉等元素沉积的主控因素。
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In chapter 2 and 3, experimentally, using the Angular-Resolved high-resolution fast Electron Energy Loss Spectrometer , at the condition of 2. 5 keV incident energy and 50-60 meV energy resolution, we measured the Optical Oscillator Strength Density Spectra for the excitations of 4p, 4s or 3d electron. The oscillator strengths for excitations of the valent shell 4p electron were obtained, and comparisons were done between presently experimental and previously experimental and theoretical results. The experimental results of different groups agree with each other approximately, but the semi-experientially theoretical results do not match with the experimental results. The delayed maximum in the photoabsorption spectra was discussed. It should arise from the transition of 4p→∈d. For the excitation of the inner-valent 4s electron, the discrepancies for the resonant structures in previous electron-impact results and photoionization results were clarified in present work, which confirms again that the fast electron impact method is suitable to measure the optical oscillator strengths. The autoionization Rydberg series 4s〓ns (n=5, 6, 7) and 4s〓nd (n=4, 5, 6, 7) were identified without ambiguity by the measurement at 0°, 2° and 4°scattering angles. The energy levels and natural widths of the excitations of Kr3d and Ar2p inner shell, including optically allowed and forbidden transitions, were determined. The widths of these inner shell excitations are nearly the same, which was interpreted by the Resonant Auger effect .
在第二章和第三章,实验上,使用角分辨的高能量分辨快电子能量损失谱仪,在2.5keV电子入射能量和50-60meV能量分辨下,测量了Kr原子由价壳层4p到内价壳层4s,再到内壳层3d电子激发的光学振子强度密度谱;得到了价壳层4p电子激发束缚态的光学振子强度,与前人实验和半经验理论结果作了细致的比较,说明几家实验是比较符合的,但半经验的理论计算存在问题;分析了光吸收谱中的延迟极大现象,说明在第一电离阈值以上几个eV范围内的极大值源于4p→εd跃迁产生的延迟极大;对于内价壳层4s激发的自电离区,澄清了前人实验中电子碰撞方法和光学方法在共振结构上存在差异的问题,再一次肯定了快电子碰撞方法是获得绝对光学振子强度的一种好方法;通过在非0°散射角的测量(如2°和4°),清楚地标识了4s电子激发的光学禁戒跃迁自电离里德堡系列4s〓ns(n=5,6,7)和4s〓nd(n=4,5,6,7);通过在0°和4°散射角的测量,观测并标识了几个新的内壳层光学禁戒跃迁能级,得到了Kr原子3d和Ar原子2p内壳层激发态(包括光学允许和禁戒跃迁形成的)的能级位置和自然宽度,用共振俄歇效应解释了这些内壳层激发态(不管是光学允许还是禁戒跃迁产生的)的自然宽度彼此比较接近的原因。
- 推荐网络例句
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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。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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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。