叶绿素的

Also the relations among the density of solutions,the absorption spectrum and the hue are analyzed.

在化学上，对许多有机物质，光的吸收性是一个重要的本质特性，对其的光谱分析可以得知其中含有的元素；在自然界中，叶绿素也有其特定的吸收光谱。

This paper deals with the influences of Hg to the morpha. some physiological and biochemical parameters such as chlorophyll, superoxide dismutase, catalase of a kind of submerged macrophyte Egeria najas; some parameters for the amelioration of water quality and agamogenesis of Egeria najas were also studied.

本文研究了Hg~(2-)对沉水植物细叶蜈蚣草外部形态、叶片叶绿素含量、超氧化物歧化酶和过氧化氢酶活性等几个生理生化指标的影响：从水体主要理化指标和生物营养元素的变化情况研究了Hg~(2 )对细叶蜈蚣草净水功能的影响；从细叶蜈蚣草断枝和侧枝生殖的变化情况研究了Hg~(2 )对其营养繁殖的影响。

It is found that with the increasing of N , leaf reflectance increases and reaches an asymptote while leaf transmittance decreases and reaches an asymptote also.

同时，给定叶绿素和水分含量，还模拟了当叶肉结构参数变化时的叶片的光学特性，随着N的增大，叶片的反射率逐渐增大，并渐趋一致，而透过率随着N的增加而渐减小，最后也逐渐靠近。

Results showed that the low light environment decreased the maximal rate of photosynthesis and carboxylation efficiency in the summer growing season, but the degree of depression depended on leaf age.

试验在人工培育的银杉苗圃地，采用遮荫的方法设置不同的光环境处理（100％、45％和3％自然光强），利用气体交换技术和叶绿素荧光技术测定了3种光强下银杉叶片光合生理指标的变化，探讨了不同光环境下银杉幼树光合能力在夏季和冬季的变化及其对生长光强的响应等。

Nitrogen deficiency causes stunting of growth and chlorosis of older leaves, as chlorophyll pigments are broken down so their components can be reused in the young growing parts of the plants.

氮的缺乏可以导致生长的迟缓和老叶片的缺绿症，因为分解的叶绿素被新生的叶片重新利用了。

The result of the ecology survey shows that the water circulation between the algae pond and the culture pond can control the content of chlorophyll a and increase the dissolved oxygen in the culture pond. The growth rate of Corbicula fluminea cultured in the water saving system is faster than that cultured in the common system.

结果显示节水养蚬池，利用施肥产生藻水的肥水池配合养蚬的养殖池的部分水体循环交换，确实可以显著地达到控制水中叶绿素a含量与适当透明度、并有增加水中溶氧及促进池蚬的成长效果，若管理良好时并有促进水质特别是营养盐的净化作用。

The results as follow:1 Effect of Hg2 to the physiological and biochemical parameters of Egeria najasAfter 24h of exposure, the color of leaf of Egeria najas became greenish at 10mg/L Hg, the color of leaf of Egeria najas was not affected significantly under 10mg/L Hg.

现将主要结果总结如下： 1 Hg~(2 )对细叶蜈蚣草叶片叶绿素含量、超氧化物歧化酶和过氧化氢化酶的影响经过24h的处理，Hg~(2 )浓度为10.00mg/L的实验组中的细叶蜈蚣草叶片开始褪绿，Hg~(2 )浓度为1.00mg/L和2.00mg/L实验组中略微褪绿，而Hg~(2 )浓度为0.05mg/L和0.10mg/L实验组中未出现明显的褪绿现象。

However,the decline of stomatal conductance in longan leaves treated with acidrain of pH2.5 was paralleled with the decrease of apparent quantumyield,and these showed the reduction of Pn was resulted from thecombination of stomatal factors and non-stomatal factors.

酸雨胁迫使细胞质pH值的降低，改变了叶绿体周围介质的H+浓度，减少了形成ATP的动力ΔuH+，导致光合磷酸化活性和H+-ATPase活性下降、电子传递链的破坏和磷酸化解联，从而使叶绿素不能对光能有效吸收、传递、转换。

Hydroponic experiments were performed to study the genotypic differences in toxic effects of oxytetracycline, a kind of tetracycline, on the root of wheat. Results were presented as follows: 1）The significant genotypic differences in responses of wheat to oxytetracycline were found.

为了研究土霉素对小麦毒性效应的品种间差异，收集了63个小麦品种，根据土霉素对小麦种根影响的试验结果，从中筛选出对土霉素耐性相差最大的两个小麦品种，探讨了土霉素对这两个小麦品种叶片叶绿素含量的影响。

Water column samples taken from the northern and the southern lake centers in Hongfeng lake in summer stratification were measured about their water temperature, pH, the concentration of HCO3(superscript -), DO, Chla, NH4(superscript +), NO3(superscript -)、and PO(superscript 3- subscript 4). The pressure of CO2 (pCO2) was calculated by the chemical balance and the Henry's law.

在夏季分层期间对红枫湖南、北湖湖心的水样进行分层采集，同时测定了分层水样的温度、pH、HCO3浓度、溶解氧、叶绿素a及铵根离子NH4(上标+、硝酸根离子NO3(上标-、磷酸根离子PO(上标 3-下标 4的浓度，水体中CO2的分压(pCO2)由化学平衡及亨利定律求得。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新