查询词典 absorption coefficient

It is reported in this paper that diphenylcarbazone reacts with Hg in pH 2.2 in the presence of Tween─60 to form a purple complex with its absorption maximum at 486 nm. The existence of chloride will depress the absorption of the complex. The negative absorption will be proportional to the consistence of chloride.

摘要﹞ 在pH为2.2的酸性介质中，在吐温－60溶液的存在下，Hg与二苯卡巴形成紫色的配合物，其最大吸收波长为486 nm，氯离子的存在可使原紫色配合物吸光度降低，其负吸光度与氯离子浓度成正比。

First observation of the essential oil of UVA (320-400nm) absorption, taking nine more before the absorption of essential oils and nine of the past record or doubt further analysis of essential oils, UVA nine large oil absorption of the former are: cinnamon, pheasant pepper, sweet orange, lemon, basil, grapefruit, bluegrass rock, roses, dill, 9 kinds of essential oils may be phototoxic as follows: orange blossom, bergamot, fennel, lemon grass, red mandarin, citronella oil, ginger oil, Australia sandalwood oil, lime; E.

首先观察精油的UVA(320-400nm)吸收度，取前九名有较大吸收之精油及九种过往记载或存疑之精油进一步分析，UVA较大吸收度之前九名精油分别为：肉桂、山鸡椒、甜橙、柠檬、罗勒、葡萄柚、岩兰草、玫瑰、莳萝，九种可能光毒精油为：橙花、佛手柑、茴香、柠檬草、红柑、香茅油、姜油、澳洲檀香油、莱姆；大肠杆菌抑菌圈变化中，柠檬、红柑及葡萄柚精油有明显的扩大现象；pUC119 DNA电泳结果，不同精油於电泳模式中，随UVA照光能量增加产生不等断裂情形，除玫瑰精油无影响，其余精油在UVA照光能量增加下皆有不等的DNA断裂情形发生，须再进一步试验。

Two new Raman spectral lines of I_2 in benzene solution are found in the experiment which is proved that resonance absorption Raman spectrum by liquid-core optical fiber much stronger than resonance absorption Raman spectrum by absorption tube.

发现了两条新的属于碘分子的拉曼谱线，这证明了使用液芯光纤方法获得的共振吸收拉曼光谱比吸收池方法获得的谱线强度强很多倍。

The calculated results show: the ground state structures of PtNi5, Pt2Ni4 and Pt3Ni3 clusters are quadrangular bi-pyramid, and Pt4Ni2 and Pt5Ni clusters are triangular bi-pyramid with hat and triangular pyramid with quadrilateral, respectively. From the point of view of thermodynamics, PtnNim clusters are stable because of the negative enthalpy of formation; the positive NICS of PtNi5 clusters show anti-aromaticity, The negative NICS of Pt2Ni4 and Pt5Ni clusters show aromaticity. The number of the IR absorption peak of Pt3Ni3 is the most. The IR and raman absorption peak of PtNi5 , IR of Pt2Ni4, Raman of Pt3Ni3 and Pt4Ni2 have only one. The absorption peak of Pt5Ni appears in the bigger frequencies only, and is zero almost in the small frequencies.

研究结果表明：PtNi5、、Pt2Ni4、Pt3Ni3团簇的基态结构都为四角双锥结构，Pt4Ni2 和Pt5Ni团簇的基态结构分别是戴帽三角双锥和三角锥戴四边形结构；PtnNim团簇的生成焓都为负值，表明团簇在热力学上是稳定的；由NICS值可得，PtNi5团簇具有反芳香性，Pt2Ni4和Pt5Ni团簇具有芳香性；从光谱分析来看，Pt3Ni3团簇的IR较强吸收峰的个数最多，PtNi5团簇的IR和Raman、Pt2Ni4团簇的IR、Pt3Ni3和Pt4Ni2团簇的Raman只有一个强吸收峰值，Pt5Ni团簇的峰值只出现在频率较大的位置，频率小的位置几乎为零。

Langmuir isothermal absorption equation for unimolecular layer was analyzed. Based on the data obtained from the isothermal absorption experiments for caramel and alkaline degradation products to glucose on fresh calcium phosphate precipitates in sugar solution with different mass concentrations, a mathematical model describing isothermal absorption for this kind of fresh solid phase in multi-component liquid phase was established by modern computer technology.

通过分析单分子层等温吸附Langmuir方程，以不同质量浓度蔗糖溶液中新生磷酸钙固相对焦糖、葡萄糖碱性降解物的等温吸附实验数据为基础，利用现代计算机技术建立了描述这类新生固相在多组分液相中的等温吸附过程的数学模型。

After the carboxymethylation,the solubility of pachyman in the water was significantly increased,its β-D-glucan characteristic absorption peak at 890 cm-1 became weak obviously,and its methylene vibration absorption peak and CO antisymmetrical stretch vibration absorption peak appeared at 1 333 and 1 606 cm-1 respectively,which indicated that the carboxymethylation succeeded.The analysis of AFM results showed that CMP molecules existed in different morphology under different solution conditions,and that the concentration,ionic strength and solvent physical chemistry characteristics of polysaccharide solution had effects on the CMP chains conformation and the action mode between different molecular chains.The phenomena were considered to be related to hydrogen bond association and intramolecular and intermolecular electrostatic interactions of CMP.

结果表明：经过羧甲基修饰，茯苓多糖在水中的溶解性显著增加，890 cm-1 处的β-D-葡聚糖特征吸收峰明显减弱，1 333 cm-1 处出现次甲基振动吸收峰，1 606 cm-1 处出现〖JG(〗C〖ZJLX，Y〗O〖JG)〗非对称伸缩振动吸收峰，表明羧甲基化成功；原子力显微镜分析表明：在不同溶液条件下，CMP分子以不同形态存在，多糖溶液的浓度、离子强度及溶剂的物化特性均能对CMP的分子链构象及链间相互作用形式产生影响，推测可能与CMP分子内、分子间的氢键缔合及静电作用有关，CMP分子与云母基底间的吸附及静电作用也会对CMP的分子链构象及图像质量产生影响。

The bay area has no substituent and has electron-withdrawing groups,such as bromine atom,cyano-group and 4-formyl phenoxy group compounds have strong absorption in 525 nm,when excitated them,they have strong yellow and salmon pink luminescence bettwen 538 and 566 nm.When introduce electron-donating substituents,such as phenoxy group,morpholinyl,piperidinyl and n-butylamino group,the absorption bathochromic shift while the electron-donating ability is improved,bettwen 536 and 692 nm have strong absorption,reach to the near-infrared region. When excitated them,only the phenoxy group compound has strong salmon pink luminescence in 572 nm,the others have no fluorescence.

其中，港湾位无取代的以及含吸电基团(—Br、—CN、对甲酰基苯氧基)化合物在525 nm左右处均有很强的吸收ε＞10~4M~(-1cm~(-1)，当光激发时，港湾位无取代、溴代和氰基取代物发出538～547 nm的强烈黄色荧光，对甲酰基苯氧基取代物则发出566 nm的强烈橙红色荧光；含供电基团(苯氧基、吗啉基、哌啶基、正丁氨基)化合物随着供电子能力的增强，吸收发生红移，在536～692 nm处均有很强的吸收ε＞10~4M~(-1cm~(-1)，达到了近红外区，当光激发时，只有苯氧基取代物发出572 nm的强烈橙红色荧光，而含氮供电基取代物均发生了荧光淬灭。

MethodsThe resin suitable for separation of chromone glycoside was determined by static absorption experiment on seven different kinds of resins, and further more, the absorption and elution of chromone glycoside on the selected resin were studied by fixed bed absorption experiment. ResultsThe AB-8 resin was founded to be suitable for separation and purification of chromone glycoside.

方法采用静态吸附实验考察D101，AB8，S8，X5等7种大孔吸附树脂对升麻苷和5O甲基维斯阿米醇苷两种色原酮苷的吸附效果，筛选出吸附性能较好的树脂；对所筛选出的树脂，进一步采用固定床吸附法分离玉屏风提取物中色原酮苷，探讨主要参数对色原酮苷固定床穿透曲线及洗脱曲线的影响。

Result: Glutin could make the absorption of jatrorrhizine, coptisine, berberine and total alkaloids increased by 30%. Tween 80 and arabic gum did not affect the absorption of berberine, but inhibit that of other alkaloids. There had no influence of lecithin on the absorption of alkaloids.

结果：明胶使药根碱、黄连碱、小檗碱和总生物碱的吸收均提高约30%；聚山梨醇酯和阿拉伯树胶对小檗碱的吸收无影响，而抑制其他3种生物碱和总碱的吸收；卵磷脂几乎不影响各生物碱的吸收。

First, we investigate the methods of sepiolite s purification from ore , from which we get the incompact short fibrous sepiolite for the experiment ; the prime activatited term is also obtained through this experiment. We use activated sepiolite to process the absorption experiment on heavy meatal ion ( Ni2+, Cr6+, Pb2+, Cu2+, Cd2+), noble metal ion, dynamite cotnposton in water and industrial oil. we take Ni2+ for example to confirm the prime adsorbent term , from the experiment we get the adsorbent isotherm . Make the dynamic absorption experiment and regenerate experiment using sepiolite on the heavy metal(Ni2+) on the base of static absorption experiment.

我们首先研究了从矿石中提纯海泡石的方法，制得供实验用的松散短纤维状海泡石；通过实验确定了最佳活化条件；进行了活化后的海泡石对重金属离子Cr~(6+、Pb~(2+)、Cu~(2+)、Cd~(2+)、贵金属离子、水中炸药组份、工业油的吸附实验；以Ni~(2+)为例选择了最佳吸附条件；通过实验作出了以上各组分的吸附等温线；在静态吸附实验的基础上进行了海泡石对重金属Ni~(2+的动态吸附实验及再生实验。

Looking to bounce back from defeat against Cesena last weekend, the Calabrian boss will be sticking to his tried and tested 4-3-3, with Lopez and Sedivic joined up front in Giampaolo's absence by either Nanni or Plasmati.

鉴于上周末对切塞纳的比赛中反败为胜，这支南方球队将会更坚持其一贯而有效的4-3-3阵型，洛佩斯和塞德维奇将取代受伤缺席的詹保罗，和纳尼或者帕斯马蒂中的一个搭档锋线。

Meanwhile, their exposure to the more freewheeling ways of the West broadened dramatically.

另外，西方较自由的生活方式对年轻人的影响增大。