查询词典 leaves

Both UV-A and UV-B irradiation induced DNA damage in mesophylls. The level of DNA damage was much higher in younger than mature leaves, which indicates that young leaves are more sensitive to UV-B radiation than mature leaves.

彗星检测结果表明，九里香叶片DNA的损伤程度与UV-B辐射的剂量呈正相关；在相同UV-B辐射剂量下，九里香幼嫩叶片比成熟叶片的DNA损伤量大，表明其幼嫩叶片对UV-B辐射的敏感性比成熟叶片高。

Basal leaves rosulate, persistent; petiole to 6 cm; leaf blade oblong or oblong-spatulate, rarely linear-oblong,(0.3-)0.6-1.7(-1.9) cm × 1.5-4 mm, densely tomentose with 4-6-rayed stellate trichomes 1 or more rays of which forked or with a lateral branch on each side, base attenuate or cuneate, margin entire, apex obtuse. Cauline leaves absent or rarely 1, sessile; leaf blade oblong, tomentose as basal leaves, margin entire, apex obtuse.

基生叶莲座状，宿存；叶柄长达6厘米；叶片长圆形或长圆形匙形，很少线状长圆形，(0.3-)0.6-1.7(-1.9)厘米×-4毫米，密被绒毛具4-6伞辐星状毛1或更多伞辐那分叉或具侧枝在每边，茎生叶缺席的或很少1，无柄；叶片长圆形，象基生叶一样被绒毛，边缘全缘，先端钝。

The total content of alkanes and aromatics were up to 60.01% 57.86% for poplar leaves and birch leaves with H/C molar ratio 1.79 and 1.89, O/C molar ratio 0.035 and 0.036, and HHV 45.47 MJ·kg~（-1）and 46.03 MJ·kg~（-1）These data shows that the oil from leaves was very similar to petroleum.

树皮样品所得油中碳氢化合物成分总含量有所降低，油的热值也有所降低，大体在40MJ·kg~(-1)左右，但是在树皮所得油中出现了大量的酚类物质，百分含量在40%左右。

The objective of this work is to study the characterization of immobilized polyphenol oxidase from banana leaves and its application on the transformation of phenolic compounds. Polyphenol oxidases of banana leaves from a variety of sources were compared. Among them, PPO from Giant cavedishii leaves showed the highest specific activity (315 units/mg).

摘要 本研究目的在探讨固定化香蕉叶多酚氧化酶之特性及於酚类化合物转化之应用，首先探讨不同品种香蕉叶多酚氧化酶并比较不同之固定化方法，结果以北蕉的单酚酶比活性最高315，活性约为其他品种之2-20倍。

The results indicated that the accumulation of Mn in the cell wall (accumulation rate as high as 36.34%) and the vacuole of the leaves (accumulation rate as high as 65.64%) might be one of the mechanisms of tolerance and hyperaccumulation of Polygonum hydropiper to Mn. Most Mn in leaves were the speciation of H2O-solubility organic salts or manganese oxalates. The content of chlorophyll a did not change under different Mn concentration treatments except that its content decreased remarkably when Mn concentration was 8000μmol/L in solutions. The membranes were not banned by Mn when its concentration was less than 5000μmol/L in solutions; Under different Mn concentrations of Mn, the content of their soluble proteins of leaves had changed at some stage. The activity of SOD and POD were gradually improved with the increasing of Mn concentration, which could eliminate activated oxygen free radical, This might be the other physiological mechanism of tolerance and hyperaccumulation of Polygonum hydropiper responding to Mn.

结果表明：锰在水蓼叶片非活性代谢部分的积累是其解毒耐锰的主要机制之一；水蓼叶片中的锰大部分以水溶性有机盐或草酸锰的形态存在；在锰浓度处理为8000μmol/L时，叶绿素a含量显著降低，而在其它处理条件下，叶绿素a无明显变化；在锰处理≤5000μmol/L时水蓼叶片的细胞膜还没有受到明显伤害；水蓼叶片的可溶性蛋白含量随锰处理浓度不同而变化，说明植物在代谢和结构上发生了调整；随锰处理浓度的增加，水蓼叶片SOD和POD活性提高，保护酶活性的提高又可清除活性氧自由基，这是水蓼耐高锰和累积锰的一种生理响应机制。

By no K top-dressing, earlier cutting roots is better for improving K content for the low leaves and middle leaves; but cutting roots at the same time of topping is benefit for improving K content for up leaves.

在不追施钾肥的情况下，对下部和中部叶片而言，现蕾期断根有提高含钾量的趋势。而对上部叶片而言，打顶时断根有提高含钾量的趋势

By K top-dressing, cutting roots soon after decapitation is the best time for improving low leaves and up leaves'K content, but cutting roots by squaring is the best time for improving K content in middle leaves.

在追施钾肥的情况下，打顶时断根对提高下部叶和上部叶片含钾量的效果最好，但中部叶含钾量则是现蕾时断根处理为最高。

The field experiments were carried out at different organic matter contents soils at Nanhua county, the result showed that: Application of suitable cake fertilizer quantities and chemistry fertilizer can promote upper leaves to spread out, enhance P and K nutrition of flue-cured leaves; The tobacco applied cake fertilizer quantities grows well, the leaves yellowing and maturity in place, and suitable cake fertilizer can raise yield and value.

通过在南华县不同有机质含量土壤上饼肥用量试验，结果表明：适量饼肥与复合肥配施，可促进上部烟叶的开片，提高烤烟叶片中磷钾营养；施用饼肥的烤烟生长良好，烟叶适时落黄成熟，可提高烟叶的亩产量和亩产值。

Ensifolium false bulbs than Cymbidium small, oval-shaped leaves numerous, leaves 2-6 tablets, leaves mostly upright posture or oblique neutrality, individual species showed micro-vertical half-bow, ensifolium leaf width of about 1.2-l.7 cm length 30-60 cm, the shape of sword-shaped, shiny.

建兰假球茎比墨兰小，呈椭圆形，叶丛生，叶子2-6片，叶姿大多为直立性或斜立性，个别品种呈微垂半弓形，建兰叶宽1.2-l.7厘米左右，长30-60厘米，形似剑状，有光泽。

The results showed: when TLC solvent system was: chloroform - methanol - diethyl amine = 90:9:1, alkaloids from lotus leaves were well isolated, and five components were isolated and identified by spraying Dragendorff reagent. The optimal conditions of HPLC solvent system were: methanol- water - diethyl amine = 75:25:0.0125. Under the conditions, components of alkaloids from lotus leaves were separated very well, and ideal RP-HPLC peaks were obtained.5、Methods of High Speed Counter Current Chromatography and preparative High Performance Liquid Chromatography applied to identify and purify alkaloids from lotus leaves were set up. When solvent system of HSCCC was: chloroform - methanol - water (pH=4.00)= 4:3:2, speed of chromatogram was 700rpm, flow speed of the mobile phase was 2mL/min, four pure components relatively were attained by isolation and purification.

结果表明：薄层层析溶剂系统为氯仿：甲醇：二乙胺=90：9：1，使荷叶中的生物碱达到了较好的分离效果，并用改良的碘化铋钾试剂喷雾显色，共分离鉴别出了5种荷叶生物碱；分析型HPLC分析检测的较优溶剂系统为甲醇：水：二乙胺=75：25：0.0125，使荷叶生物碱的各个组分达到了基线分离，并获得了较好的峰形。5、建立了高速逆流色谱和制备型HPLC技术分离纯化荷叶生物碱的具体方法。H(来源：ABC46论文网www.abclunwen.com)SCCC法在溶剂系统为氯仿：甲醇：pH4.00的水=4：3：2，色谱仪转速为700rpm，流动相流速为2mL／min的条件下，分离纯化得到了4个纯度较高的化合物。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。