石墨

The finite DOS at Fermi level means that there are free carriers, i.e., a modulated electric field could change a semiconducting graphene into a semimetallic one.

值得一提的是，态密度中对应费米能为零的有限值代表著自由电子的存在。换句话说，藉由调制电场的影响可以将单层石墨系统从半导体性变成金属性的系统。

Generally, electric-conductivity materials such as metal, conductive polymers, and graphite are coated on the outside surface of the capillary tip followed by the application of an external high voltage on the tip to provide a sufficient electric field to generate electrospray in seathless interface. Thus, the fabrication of the electric-conductivity material on the surface of fused-silica is one of the main issues when using sheathless interfaces.

一般来说通常需要将金属、导电高分子、或石墨等导电材料涂布於毛细管样品出口尖端，外加第二组电压於导电尖端以提供电喷洒时所需要的电场，但如何将导电材料稳定地涂布於矽氧材质的尖端表面一直是此界面探讨的主题之一。

In this paper the content of fourteen microelements in astragulus root of northeast China was determined by flame atomic absorption and graphite oven absorption spectrophotometry, compared with four pretreatment slaking methods and gained good determination methods for some elements.

本文以火焰原子吸收法和石墨炉原子吸收法测定了东北黄芪中 14种微量元素的含量，并对 4种预处理消化方法进行了比较，选择出对某种元素较好的测定方法。

Electrochemical behaviour of ethidium bromide on a wax impregnated spectrographic electrode was studied.

研究了溴化乙锭在浸蜡光谱石墨电极上的电化学行为，用电化学循环伏安法及紫外-可见光谱法对溴化乙锭与 DNA的作用进行了研究，得出溴化乙锭与 DNA发生嵌插作用的结

If it is damaged in places where you want to change, or it will lead to nbspvacuum squeege in graphite.

若有毁坏的边际给当即调换，否则会变成假不满泵边石墨刮板断裂。

METHODS: Fasting venous blood of participants in two groups was harvested sterilely at 6 months and 1 year after test group restoration, serum nickel and chromium content were determined using graphite furnace atomic absorption spectrometry.

无菌抽取对照组健康者及实验组患者修复后0.5年，1年空腹静脉血，采用石墨炉原子吸收光谱法测定血清中镍、铬元素的含量。

In this thesis, the concentration of graphite powder in the liquid nickel sulfamate and current density are chosen as parameters for composite electrodeposition of nickel and graphite powder. In addition, after electrodepositing, the graphite powder is oxidized into carbon dioxide through heating process for obtaining porous structure. Filter devices of various specifications can be made by controlling the hole dimension of the porous structure.

本研究为了制作出多孔洞结构，将在氨基磺酸镍电铸液中以不同的石墨粉浓度及电流密度为参数进行复合电铸，并且经由加热处理使石墨氧化成为二氧化碳以制造出多孔结构，根据这些多孔结构的孔径大小可以获得各种规格的过滤结构元件。

Four different power samples,sulfanilic acid anhydrous,soluble starch,graphite and calcium carbonate,with different content of carbon were used to determine the influence of element speciation on the properties of laser-induced spectroscopy.

对具有不同碳元素存在形态的4种化学纯试剂(无水对氨基苯磺酸、可溶性淀粉、石墨和碳酸钙)进行激光诱导击穿光谱实验。

The corrosion properties of common cast iron materi als in static (flowing velocity is about 0.1 m/s)and flowing seawater were teste d,and effects of graphite morphology,matrix microstructure and low alloying trea tment on corrosion properties of cast irons were analyzed.

对常用铸铁材料在实海和流动海水条件下的腐蚀性能进行了测试，分析了铸铁中不同石墨形态、基体组织、低合金化对铸铁腐蚀性能的影响机理。

A direct method to prepare nanometre catalyst of positive electrode for methyl alcohol fuel battery is to add strong oxidant to a mixed solution of manganese nitrate and some other metal nitrate, to coat them on the graphite electrode to have catalyst precursor produced, then to prepare the non-platinum nanometre catalyst of metal ion-doped manganese dioxide with carbon as a carrier by thermolytic reaction of the in-situ precursor. The prepared catalyst has the advantages of high electrical catalytic activity of methyl alcohol, high performance to protect against CO poison and low price, and it can lower the battery manufacturing cost effectively as well as can raise the entire electrical property of the battery so that the price performance and the market competitive edge of the battery are enchnaced effectively.

一种直接甲醇燃料电池阳极纳米催化剂的制备方法是在硝酸锰和其它金属硝酸盐的混合溶液中加入强氧化剂，涂抹于石墨电极上制成催化剂先驱体，通过先驱体在原位的热分解反应来制备以碳为载体的金属离子掺杂二氧化锰非铂纳米催化剂；制得的催化剂具有高的甲醇电催化活性、高的抗CO毒化性能以及低廉的价格等优点，可以有效地降低电池的制造成本，提高电池的整体电性能，从而有效地提高直接甲醇燃料电池的性能价格比及市场竞争能力。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。