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The results of absorption spectra of chloroplasts showed that NO alleviated the effects of Cd on absorption spectra of chloroplast by raising the relative absorbance at 436 nm,480 nm and 470 nm,which caused lower contents of carotinoid and chlorophyll.

结果发现，Cd对叶绿素a、叶绿素b和类胡萝卜素含量都有不同程度的降低，NO处理缓解了Cd的影响，使叶绿体室温吸收光谱的吸收率提高；Cd导致686 nm处峰偏移4 nm，峰值降低33%，734 nm处峰值降低23%，外源NO缓解了Cd对光合系统的影响，使得叶绿体低温荧光光谱在686和734 nm的峰值分别仅下降17%和10%；以DCPIP为人工电子受体， Cd处理的叶绿体中DCPIP还原速率较慢，光合电子传递(H2O→DCPIP)速率降低1.5倍，外源NO处理显著缓解了Cd对电子传递链的抑制，使其光合电子传递速率恢复到对照的水平。

In this work, the digital analysis of six Al-based standard alloy samples with different content of Mg has been performed. Using spectra of Mg 518.36 nm as the analysis spectrum line, Cu 510.55 nm and Fe 510.75 nm as comparison spectrum lines separately, quantitative analysis has been made.

对6种不同镁元素含量的铝合金标准样品进行了数字化分析测定，探索了选用Mg 518.36 nm作为分析谱线，分别选用Cu 510.55 nm和Fe 510.75 nm作为比较谱线进行定量测定的方法。

And the spectrum was divided into three regions, which were 430~100 nm, 1 000~1 800 nm, 430~1 800 nm, respectively. Four methods of spectrum data preprocessing were used, which were multiplicative scattering correction, standard normal variate, first derivative and second derivative.

应用多元散射校正，标准正态变量变换，一阶微分和二阶微分四种不同预处理方法，分别在430~1 000 nm、1 000~1 800 nm和430~1 800 nm三个光谱范围内建立识别脐橙污染程度的偏最小二乘法数学模型。

The outer diameter and inner diameter were 300～400 nm and 200～300 nm respectively, and the thickness of the wall was about 100 nm.

C60空心纳米壳的外直径为300～400 nm，内直径为200～300 nm，壁厚约100 nm。

The calculated phosphorescence of complexes 1(486 nm), 2(576 nm) and 3(567 nm) can be described as originated from a 3→ excited state with 3MLCT/3LLCT character.

化合物1(486 nm)， 2(576 nm)和3 (567 nm)最低的磷光发射可以描述为→跃迁。

Using silicon and metallic iron,α-Si_3N_4 olivary microparticles with a diameter of about 300～500 nm have been obtained at 650℃.When silicon and metallic aluminium were used to react with ammonium chloride,α-Si_3N_4 nanowire bundles with diameter of about 8 nm can be also obtained at 600℃.Since all of the starting materials used are relatively cheap,the methods will have potential prospect in industrial application.3.Graphite-like carbon nitride nanowire bundles with diameters of 200-500 nm were synthesized from the solid state thermolysis of melamine at relatively low temperature(400℃).

相关研究工作的成果发表在International journal of applied ceramicstechnology.2、以廉价的硅铁合金和氯化铵为原料，在600℃合成了α相的氮化硅纳米线束，单根纳米线直径8 nm，长达800 nm，考察了反应温度和反应时间对产物纯度和形貌的影响；以硅粉和铁粉为原料合成了纯度良好，直径为150～500 nm的α-Si_3N_4亚微粒子；以硅粉和铝粉为原料在400-600℃合成了直径为10 nm左右的α相氮化硅纳米线束。

In the study of UV absorbing test, polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10) shows better ability to absorb UV and shows wider range of absorbing UVB than control group, octyl salicylate. With respect to octyl salicylate, octyl salicylate can abosorb the highest wavelength up to 306 nm under UVB (wavelength ranges 280 nm ~320 nm), and the ε is 4.03 × 103 ㎝-1M-1. However, the ε of polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10) under 306 nm range 4.14 × 103 ~ 11.45 × 103㎝-1M-1. It is reasonable that the compounds in this study can not only absorb the individual wavelength amoung the wavelenght of UVB, but also absorb wider range of wavelength.

在紫外线可见光吸收测试结果显示，相较於对照组水杨酸辛酯在UVB波长(280 ~ 320 nm)范围最大吸收波长为306 nm，其莫耳吸收系数为4.03 × 103 ㎝-1M-1，而多羟基取代之N-色洛冬宁苯甲醯胺衍生物（化合物1 ~ 10）在306 nm的莫耳吸收系数介於4.14 × 103 ~ 11.45 × 103㎝-1M-1，其吸收紫外线的效果皆优於对照组水杨酸辛酯，且其在UVB波长的范围吸收波长的光谱也较宽广，可知每个化合物并非只是对UVB波长范围内的单一波长有吸收度，而是对UVB波长范围具有较宽广的光谱吸收。

METHODS:The measurment procedure was carried out using pH 8 phosphate salt buffer as solvent.Phenol red was determined by dual wavelength spectrophotometry at 558 nm and 570 nm. Tinidazole was determined by multiple regression spectrophotometry at 290,300,318 nm and 340 nm.

以pH 8磷酸盐缓冲液为溶剂，采用双波长法在558 nm和570 nm测定酚红，以多元回归分光光度法在290，300，318，340 nm测定替硝唑。

Last, Nano Indenter XP was used to measure the mechanical properties of the fabricated probe structures, the results show that the spring constants of cantilever type and simply supported beam type probe structures were 2556 Nm-1 and 26280 Nm-1 respectively, which were close to the designed values of 2838 Nm-1 and 23935 Nm-1 with the error of 9.94% and 8.92%. DC probes and HP 4194A Impedance/Gain-phase Analyzer were adopted to measure the electrical properties of the simply supported beam probe card. The contact resistance from the probe tip to the end of stripline was 0.6Ω. In the frequency range of 5 to 40 MHz, the characterized impedance between two probes was larger than 20 kΩ, and the capacitance was from 0.17 pF to 0.27 pF.

采用Nano Indenter XP纳米压痕仪对制备后的探卡结构进行力学性能测试，测得悬臂梁和简支梁的弹簧常数分别为2556 Nm-1和26280 Nm-1，与2838Nm-1和23935 Nm-1的理论设计值相差9.94%和8.92%；采用直流探针和HP 4194A阻抗分析仪对简支梁型探卡结构进行了电学性能测试，从简支梁探针到引线末端的直流接触电阻为0.6Ω，在5-40 MHz范围内，探针间特征阻抗大于20 kΩ，电容在0.17 pF至0.27 pF之间，测试结果表明探针的接触电阻小、射频隔离性能好。2。

The diode laser at 657 nm has the characteristics of lower cost and higher power than that at 633 nm. Therefore, we use the 657 nm ECDL to investigate the saturation spectrum of the hyperfine structure components of P(84) 5-5 transition of 127I2 at 657.483 nm for frequency stabilization of our ECDL laser.

nm 波段的二极体雷射比起633 nm 波段的二极体雷射拥有较低的费用和较高的功率，因此，我们使用657 nm 波段的外腔二极体雷射来研究657.483 nm 波段之碘分子跃迁P(84 5-5 transition of 127I2，并将我们的外腔二极体雷射稳频在此跃迁的超精细结构成分上。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷