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The effects of 4 amendments on biomass, Cd uptake of Brassia chinensis , and pH and DTPA-extracted Cd in Cd-contaminated soils were investigated in a pot experiment of two continuous crops of B.

采用盆栽试验，研究了施用石灰、钙镁磷肥、泥炭、碱渣4种土壤改良剂对外加镉污染的赤红壤上小白菜产量、镉吸收量、土壤有效态镉及pH的影响。

Then the combinant plasmid was conducted into ACC-2 cell by electroporation. ACC-2 cells stably expressing CD was obtained by 10-day positive selection with 400 μg/mL G418. Total RNA was extracted and the expression of the CD gene in transfected ACC-2 cells was identified by RT-PCR. RESULTS: PCR yielded a fragment of l280bp and CD was verified by sequence analysis.

测序正确后，将其亚克隆到质粒表达载体pIRES中，构建以内部核糖体进入位点相连的CD基因的质粒表达载体pIRES-CD，采用电穿孔法，以质粒表达载体转染ACC-2细胞，用400μg/mL的G418筛选10d，获得稳定表达CD基因的ACC-2细胞系，提取该细胞的总RNA，用RT-PCR检测CD基因的表达。

In this paper, the complexation of poorly water-soluble fumaric acid withα-CD,β-CD and HP-β-CD were investigated respectively.

因此，增加富马酸的水溶性，对拓宽富马酸的应用范围具有重要的意义。

Based on the remarkable sensitivity enhancement effect of Co~(2+) on Cd,a new chemical vapor generation system of Cd-KBH_(4)-NaIO_(3)-HCl was developed for the determination of trace Cd in foodstuff samples by atomic fluorescence spectrometry.

利用Co2+对镉的测定具有明显的增敏作用，采用Cd-KBH4-NaIO3-HC l新化学蒸气发生体系原子荧光光谱法测定粮食中痕量镉。

Here we introduced oxadiazole moiety to theside-chain of Ph-PPV to enhance the electron transport properties. The luminescenceefficiency and luminescence brightness (1.33cd/A, 9400 cd/m~2) of the Ph-PPV withside oxadiazole moiety are much higher than non-oxadiazole Ph-PPV (0.70 cd/A,2300 cd/m~2), and these polymers emitted green light which unaffected by theintroduction of oxadiazole moiety. Anthracene has a rigidity and planar structure which shows high photoluminescenceand thermo-stability.

结果表明，以十烷氧基作为间隔基使噁二唑单元键接在苯基取代PPV的侧链，所得材料制备的电致发光器件的效率和亮度(1.33cd／A，9400 cd／m~2)明显高于不含噁二唑单元的苯基取代PPV(0.70 cd／A，2300 cd／m~2)，噁二唑单元的引入并不影响材料的发光光色，膜状态下的荧光发射光谱和电致发光光谱均呈绿光发射。

However,compared to Cd~(2+) stress alone, treatment of SNP+Cd~(2+) caused more increases in SOD,CAT and POD activities, a decrease of H_2O_2 level and MDA content in leaf and root ofmung bean seedlings. These results indicated that exogenous NO induced increases inSOD, CAT and POD activities, which scavenged H_2O_2 and resultantly inhibitedmembrane lipid peroxidation in leaf and root of mung bean seedlings under Cd~(2+) stress.

说明NO通过诱导膜保护酶活性的提高，降低了活性氧水平，从而使Cd~(2+)胁迫诱导的膜脂过氧化程度降低，这可能是外源NO明显缓解Cd~(2+)胁迫抑制绿豆幼苗生长发育的原因之一。

Cd and Hg were found in all the mushrooms growing in the soil with no Cd and Hg,and the content of Cd was 28.383 6 mg/kg dry matter in Lepita ventriosospora and that of Hg 0.860 7 mg/kg dry matter in Russula delica.

我国在这方面的研究极少，张丹曾对采自于大巴山的美味牛肝菌子实体作了重金属Cd、Pb、Zn、Hg、As的分析，分别为0.261、1.567、70.870、1.794、2.312 mg/kg干物质。

Cd was not teste in pulp which indicated that basically Cd didn\'t transfer to pulp and the heavy pollution of Cd in soil would not harm the pulp.

Cd在果肉中未检出，说明Cd基本不向柚子果肉中迁移，土壤中Cd的重度污染对柚子果肉不会造成危害。

The Isocon analyses also shows that the altered quartz sandstone of the Salitashi deposit which enriches in Cd, As, Ba, Sb, Ag, Co, Ni and Fe, gained Pb, Zn, Cd, Ag, Co, but lost Mn, Zr, Ba, V and Cr during it alteration, the ore and its dolomitized limestones intensively enrich in Ag, Cd, As, V, Cr, Co, Ni and Cu also.

矿石中强烈富集Ag、Cd、As和过渡族元素V、Cr、Co、Ni、Cu，且Cr、Co、Ni在矿石中的富集程度远远高于矿区碎屑岩，近矿白云质灰岩具有和矿石相近的元素富集特征，该矿床的早期矿化和后期的改造成矿作用都与深部岩浆去气有关。

A universal card with multi-purpose refers to a card that can be used in both of card brushing reader and optical driving to fetch data. It is mainly made as to set a CD fetching face and a magnetic strip on the disc (thickenss of 0.8 mm) being produced in accordance with ISO 7816 agreement rules to fetch the data stored in the magnetic strip or IC card by inserting them to a card brushing machine or a card inserting machine. The disc also can be placed on the fetching sheath disc of 0.4 mm thickness and further to place them together into an optical driving firmly for reading out data on CD fetching face by optical fetching head in optical driving so that it is not only integrating magnetic card, IC card and CD disc for easy to carry but also increasing the safety in using, storing volume of the disc and expanding the using range.

本发明涉及一种多用途万用卡，尤指一种可同时适用在刷卡卡片阅读机及光驱内进行数据读取的多用途万用卡，其主要是在一符合ISO 7816协议规范(厚度0.8mm)的盘片上设有一CD读取面及一磁条，可插入一刷卡机或一插卡机内读取磁条或IC芯片内的储存数据，而该盘片又可放置在一厚度为0.4mm的读取套盘上，致使当该盘片放置在读取套盘后可安稳放置在一光驱内，且方便光驱内的光学读取头读取CD读取面内的数据，因此不仅可整合一磁卡、IC卡、CD片等于一盘片中以方便携带，又可提高盘片使用的安全机制、内存容量及扩展其使用范围。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。