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DNA C-values might be one of important indices in the evaluation of angiospermous invasiveness. To test this viewpoint, we compared DNA 1C-values and basic genome sizes in 3,676 angiosperms. The results suggest that:(1) the two nuclear values vary greatly among different groups, e.g., significantly higher in herbs than in trees, in monocots than in dicots, in perennials than in non-perennials;(2) the two nuclear values both have significant effects on plant invasiveness, especially in herbs, dicots, monocots, perennials, non-perennials, diploids, polyploids, Compositae, and Poaceae, while not significant in trees and Fabaceae.

DNA C与被子植物入侵性密切相关,为考察应用DNA C评估被子植物入侵性的可靠性和局限性,我们统计分析了全世界范围内3676种被子植物的DNA 1C(配子未发生DNA复制时的染色体DNA含量)及基因组大小(单个染色体组的DNA 含量),结果表明:1)DNA 1C和基因组大小在被子植物不同类群中差异极大,例如在草本植物中显著高于木本植物,单子叶植物显著高于双子叶植物,多年生植物显著高于非多年生植物;2)两项指标都与被子植物入侵性显著负相关,尤其是在草本植物、双子叶植物、单子叶植物、多年生植物、非多年生植物、二倍体、多倍体、菊科和禾本科中,然而在木本植物、豆科植物中其与植物入侵性无显著关系。

Results: At each examination tine, rADC in infarct core was lower than normal. Within 3 days after MCAO/R, rADC in infarct margin was lower than normal, and 7 days later, rADC equaled approximatively with normal.,and even was higher than normal.

但是,无论是在梗死灶中心还是边缘,TMS组的rADC均比相应时间点的假刺激组rADC高;两组内,梗死边缘的rADC均比梗死中心的rADC高。

The aerobic bacteria andtotal microorganism were the highest in autumn and the lowest in winter;Theactinomycetes was the highest in spring and the lowest in winter;The rhizospherefungi was the highest in autumn and the lowest in winter, the non-rhizosphere fungi was the highest in spring and the lowest in winter.The average microorganism"s R/Sof four seasons in Eucalyptus grandis plantation is 1.40,the aerobic bacteria"s averageR/S of four seasons is 1.40,the actinomyeetes"s average R/S of four seasons is 1.40,thefungi"s average R/S of four seasons is 1.41.The uprightness distribution rule ofrhizosphere and non-rhizosphere soil microorganism in Eucalyptus grandis plantationwere the same,the trend is surface layer(0-20cm)>middle layer(20-40cm)>underlayer(40-60cm).Compared with the amount of microorganism in 2004, the amount ofmicroorganism in 2006 had a definite drop.

好气性细菌及微生物总数量秋季最高、冬季最低;放线菌数量春季最高、冬季最低;真菌数量根系土壤秋季最高、冬季最低,根外土壤春季最高、冬季最低;巨桉人工林三大类微生物四季的平均R/S1.40,好气性细菌四个季度平均R/S1.40,放线菌四个季度平均R/S1.40,真菌四个季度平均R/S1.41;巨桉人工林两样地根系与根外土壤微生物垂直分布规律一致,土壤微生物三大类及微生物总数量的垂直变化总的趋势是表层(0~20cm)>中层(20~40cm)>下层(40~60cm);相比较2004年土壤微生物数量,2006年三大类数量及微生物总数均有一定程度的下降。

A boiler water controlling system with basifier a mg/L Na3PO4+b mg/L NH3+c mg/L NaOH is investigate in the paper. Several calculate methods are discussed and the precision pH value calculating equation is proposed for a cycle chemistry system that has seven changing parameters coexisting together, i. e. a mg/L Na3PO4+b mg/L NH3+c mg/L NaOH+d mg/L H2SO4+e mg/L CH3COOH+f mg/L CO2+g mg/L SiO2. As an example of equilibrium phosphate treatment, the pH value are obtained and showed in graphics with the four kinds of impurity changing from 0 to 1.0 mg/L. The calculating results can be used in practical boiler water pH value control.

对于一个采用a mg/L Na3PO4+b mg/L NH3+c mg/L NaoH碱化剂的炉水控制体系,主要讨论在炉水中存在d mg/L H2SO4+e mg/L CH3COOH+f mg/L CO2+g mg/ L SiO2 4种杂质时炉水pH的计算方法,得到通用的pH计算表达式;并以炉水平衡磷酸盐处理工况为例,计算这4种杂质在0-1 mg/L变化时,其单独或联合作用对炉水pH的具体影响程度,以6幅图形展示计算结果,该结果可应用于炉水pH的实际控制。

A boiler water controlling system with basifier a mg/L Na3PO4+ b mg/L NH3+c mg/L NaOH is investigate in the paper.Several calculate methods are discussed and the precision pH value calculating equation is proposed for a cycle chemistry system that has seven changing parameters coexisting together,i.e.a mg/L Na3PO4+b mg/L NH3+c mg/L NaOH+d mg/L H2SO4+e mg/L CH3COOH+f mg/L CO2+g mg/L SiO2.As an ...

对于一个采用amg/L Na3PO4+bmg/L NH3+cmg/L NaOH碱化剂的炉水控制体系,主要讨论在炉水中存在dmg/L H2SO4+emg/L CH3COOH+fmg/L CO2+gmg/L SiO24种杂质时炉水pH的计算方法,得到通用的pH计算表达式;并以炉水平衡磷酸盐处理工况为例,计算这4种杂质在0-1 mg/L变化时,其单独或联合作用对炉水pH的具体影响程度,以6幅图形展示计算结果,该结果可应用于炉水pH的实际控制。

The results suggested that compared with A-starch and maize starch, there are more quantities of impurities, such as protein, lipid and pentosan, in B-starch. B-starch prepared in the laboratory almost has the same compositions as three samplings, and accords with the reports of some documents too. Differing from the granules in A-starch, those in B-starch are smaller sized (1-10m)and oval shaped, and felted each other. The crystallogram of A- and B-starch are similar, i.e. A type. There is difference in granular distribution between A- and B-starch. The granular distribution of B-starch is anomalous and extensive (l~1259m).B-starch has bigger dilatancy and retrogradation, and smaller blue value, solubility, viscosity, gelatinization temperature and gelatinization enthalpy.

试验结果表明:跟玉米淀粉、A淀粉相比较,B淀粉含有的蛋白质、脂肪和戊聚糖等杂质数量多;实验室制备的小麦B淀粉中淀粉、粗蛋白、戊聚糖等含量均与文献的报道接近,也与在工厂采样的B淀粉相近;与A淀粉不同,B淀粉以小颗粒的淀粉为主,平均粒径1~10μm,颗粒形状呈椭圆形,同时颗粒和颗粒之间黏结紧密;B淀粉和A淀粉晶形结构相似,都为A型;B淀粉的粒度分布情况不同于A淀粉,其粒度分布规律性不强,分布范围也较宽,粒度在1~1259μm之间;B淀粉的凝沉和膨润力大于A淀粉,而沉降体积、蓝、溶解度、粘度、糊透光度、相变温度和热焓均小于A淀粉;杂质的含量对B淀粉性质的影响是明显的,随着杂质含量的增加,沉降体积、溶解度和透光度减小,膨润力增大,但是它们对凝沉、蓝和粘度的影响比较复杂。

Chapter four. Two glucosamide-based trisiloxane Gemini surfactants which were connected with the short carbon chain dialcohol diglycidyl ether spacer were synthesized and their properties were determined. These compounds were structurally characterized by their 1H and 13C NMR spectra and elemental analysis.

界面性能通过K12表面张力仪测定,在临界聚集浓度CAC为1一3、10一5时可以显著地降低水的表面张力至约21 mN/m,比连接基为低碳链二缩水甘油醚的略低,其CAC随着乙氧基数的增加而增加,其CAC比相应的单体低1~2个数量级,而且有两个CAC

The main contents as following:1 Phase separation ability of dipotassium hydrogen phosphate solution was investigated on the conditions of different solvent, different temperature, different pH value and little additional sodium chloride.

实验结果表明:在相同条件下,异丙醇的分相能力大于乙醇;温度对磷酸氢二钾+乙醇/异丙醇+水体系分相能力的影响很小;磷酸氢二钾水溶液的pH对体系的分相能力影响较大,当pH较小时,体系不能形成两相,当pH>6时,随着pH的升高,分相能力逐渐增强;外加少量无机盐NaCl,对体系的分相能力影响不大。

This paper emphasized on the strength testing of paper-bag which was produced by Foshan Sanshui KelunPaper.Inc. The test was done according to the Chinese Standards(GB/T453—2002、 GB/T450—2002、GB9774—2002 etc.).It showed that , the average CD ensile strength of a single paper is 2.96KN/m, above the normal value of 2.0 KN/m; The average MD ensile strength of a single paper is 3.88 KN/m, above the normal value of 3.8 KN/m; The combined CD ensile strength is 7.88 KN/m, above the normal value of 6.0 KN/m; The combined MD ensile strength is 11.91 KN/m, above the normal value of 11.4 KN/m.

本文针对佛山三水科伦纸业公司生产的纸袋进行了强度方面的测试,根据国家标准(GB/T453—2002、GB/T450—2002、GB9774—2002等),借鉴厂内已有的检测方法,测出了该厂生产用纸单层的横向抗张强度的平均为2.96 KN/m,高于行业经验2.0 KN/m;纵向抗张强度平均为3.88 KN/m,高于行业经验3.8 KN/m;组合横向抗张强度为7.88 KN/m,高于行业经验6.0 KN/m;组合纵向抗张强度为11.91 KN/m,高于行业经验11.4 KN/m。

In the first time,the results suggest that after iodine-nutritional status in pregnant women is improved,elevation of neonatal TSH during expulsive process is a general phenomenon,especially in vaginal expulsive neonates.Vaginal birth way is one of the important factors which makes umbilical cord blood TSH tend to higher value.It is suggested that umbilical cord blood TSH values from vaginal birth should be corrected by those from cesarean section or heel blood

首次揭示在孕妇碘营养明显改善后,新生儿在娩出过程中TSH的升高是一种普遍现象,以阴道娩出者最明显,是导致脐带血TSH向高偏移的重要因素之一,并建议用剖宫产脐带血TSH或足跟血TSH校正阴道产脐带血TSH

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推荐网络例句

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性,但我大喊,并在他们的方向扔石头让他们过的线索,远离我,以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。

Store this product in a sealed, lightproof, dry and cool place.

密封,遮光,置阴凉干燥处。