碳

Acieration Mu hydrogenation the main body of a book has been inspected mainly takes off the nitrogen function, the acieration Mu deoxidation acieration temperature and , deoxidation acieration reaction airspeed, the reaction pressure escaping from nitrogen reaction affects hydrogenation as well as the reaction airspeed azine hydrogenation to acieration Mu catalysator takes off the nitrogen function's.

本文主要考察了碳化钼的加氢脱氮性能，以及碳化钼还原碳化温度，还原碳化反应空速，加氢脱氮反应的反应压力以及反应空速对碳化钼催化剂的吡啶加氢脱氮性能的影响。

MgO-C major producers, aluminum MgO-C, Al-Mg is not brick, aluminum spinel carbon bricks, low-carbon non-carbon brick, aluminum silicon carbide bricks, skateboards brick, nozzle brick, block bricks, a steel I brick, air brick, precast tundish board,×, brick, iron groove materials, castables, gunning materials, the bottom tie material, combined with 13 major series, etc.

主要生产镁碳砖、铝镁碳砖、铝镁不烧砖、铝尖晶石碳砖、低碳无碳砖、铝碳化硅砖、滑板砖、水口砖、座砖、出钢口砖、透气砖、中间包预制板、高铝砖、粘土砖、铁沟料、浇注料、喷补料、炉底打结料、结合剂等13大系列40多个品种，产品畅销国内30多家大中型钢铁企业，并出口德国、乌克兰、澳大利亚、越南和伊朗等20多个国家和地区。

Corbicula fluminea (Müller 1774) was bred in the laboratory and two shell samples (shell height, A=13 mm, B=9 mm) were selected to determine the carbon isotopic composition of the increment shells (aragonite, CaCO3) and the host water. The results indicate that the carbon isotopic compositions of the two shells increased as the δ^13 C values of the host water increased from -5.24‰ to 1.41‰, showing the influence of δ^13C values on the shell carbon isotopes.δ^13C value ranges from -4.76% to -2.09% and δ^13 C from -8.49% to -2.89%. The δ^13 C values of shells A and B are both more negative than the predicted equilibrium ones, indicating that the shell had used the metabolic CO2 rich in 12C during their growth process.

对双壳类河蚬进行了室内养殖，并选取两个壳体样品（壳高，A=13 mm， B=9 mm），测定其生长部分壳体和生长期间水体碳同位素，研究表明，随着水体碳同位素的升高（δ^13C由－5.24‰升至1.41‰），两壳体碳同位素也随之升高，表明水体对壳体碳同位素的影响；δ^13CA分布范围为－4.76‰~-2.09‰，δ^13CB为－8.49‰~-2.89‰，壳体A和B碳同位素均比预测平衡值偏负，表明壳体在形成过程中利用了新陈代谢产生的富集12C的CO2。

Results showed that the CO2 absorb ability in the eight Crop systems net productivity process was 4 032 366ta^(-1); the amount of CO2 outlet in the soil was 3981753ta^(-1), less than the CO2 adsorb ability, so that the whole crop system was a weaker carbon sink process in the atmosphere. The continue planting species such as Rice, sugarcane, cassava, and melon crop or high haulm crops have the characteristics of annually crop net productivity CO2 absorb ability bigger than soil CO2 outlet and this systems had bigger carbon sink function ability; the short haulm crop systems of peanut, soybean, flowers, and vegetable annually crops net productivity CO2 absorb ability less than soil CO2 out let, but also carbon sink source. The CO2 absorb ability of fruits and economic parts above ground bigger than that which growth under ground. Except of the CO2 absorb ability less than the soil CO2 outlet in the peanut during growth in procreate period, the other seven crops CO2 absorb ability were bigger than that soil CO2 outlet during procreate period. Most of crops during growth in procreate period had carbon sink function ability, and only in barren period showed the carbon source function phenomenon.

结果表明：2005年广州市8种农作物系统作物净生产力吸收CO2 4032366ta^(-1)，其土壤CO2排放3981753ta^(-1)，吸收大于排放，对大气CO2而言，整个农作物系统是一个弱的碳汇；水稻、甘蔗、木薯和果用瓜4种连作或高杆作物系统每年作物净生产力吸收CO2量大于土壤CO2的排放量，系统具有较大的碳汇功能，花生、大豆、花卉和蔬菜4种矮杆作物系统每年作物净生产力吸收CO2量小于土壤CO2的排放量，系统起着碳源作用；果实或经济产量生长在地上部分的作物其单位面积吸收CO2能力比果实生长在地下的作物大；除花生在生育期间生物量吸收CO2量少于同期土壤排放以外，其余7种作物在生育期间生物量吸收CO2的量大于同期土壤排放，大多数农作物在生育期间具有碳汇功能，在撂荒期才体现碳源作用。

Organic carbon may be released from the host rocks and dissolved in the hydrothermal solution during the thermal maturation and de-carbon process of the organic matter. Hydrogen and oxygen isotope studies reveal that the upward ore forming fluid is gernerated via mixing of magmatic water and convecting groundwater.

矿床中的碳具有岩浆源碳与有机碳混合的碳同位素组成，其中的有机碳可能来源于容矿围岩中有机质热演化过程中的去碳作用。

Different shrubberies have different effect on soil carbon management index.

结果表明，侵蚀环境下的坡耕地由于人为干扰，土壤碳库含量偏低，退耕营造柠条林可以显著增加土壤碳库各组分含量，并随恢复年限呈显著线性关系，25 a时TOC、LOC和NLOC分别较坡耕地增加271%、144%和204%，仅为侧柏林的32%、30%和29%，碳库指数和碳库管理指数较坡耕地明显增加，增幅分别达到144%和108%，仅为侧柏林的28%和43%；不同灌木林对土壤碳库管理的改善作用不同，恢复年限相同的沙棘林土壤碳库组分含量和管理指数明显高于柠条林，坡耕地营造灌木林后土壤经营和管理水平得到了显著改善，土壤系统向着良性方向转变。

After the reorganization of the company through the acquisition of Fushun carbon, Chengdu and Hefei light carbon carbon, and enhance the company's overall profitability, not only to avoid the large side, Liaoning and with the existence of competition and maintain its own integrity and independence of the assets, and strengthen the company's The main business, to achieve the domestic industry to effectively integrate carbon, to form China's largest carbon group, in order to create the world's carbon laid the foundation for strong prices.

后该公司通过碳抚顺，成都，合肥轻碳碳，收购，提高公司的整体盈利能力，不仅能够避免大一些，辽宁和竞争的存在并保持其完整性和独立性重组的资产，并加强该公司的主要业务，以实现国内产业的有效整合碳，形成中国最大的碳小组，以创建世界上碳奠定了强有力的价格基础。

The Company is an emerging carbon refractories specialized production factory, main products have mixed iron motor aluminum carbon brick kiln, blast furnace with sintering porous aluminum carbon brick, molded carbon bricks, mixed iron and iron tank cars do not burn carbon brick of aluminum silicon carbide composite corundum brick and developed corundum--type silicon carbide carbon brick.

本公司是一个新兴的碳质耐火材料专业化生产厂，主要产品有混铁车用烧成铝碳砖，高炉用烧成微孔铝碳砖，模压碳砖，混铁车和铁水罐不烧铝碳化硅碳砖，复合刚玉砖及研制开发的刚玉-β型碳化硅碳砖。

With this method the copper plating graphite powder was made up in 50% copper content .The silver- copper plating graphite composite was prepared while the silver- copper-graphite composite and the silver-graphite composite were also made up together .The mechanical and electric characteristics of the three kinds of composites were tested and it was found that the copper plating graphite powder can only optimize the properties of the silver matrix composite under the high content of the graphite ,the conductivity and the mechanical property was improved and the material could take higher current in the same carbon content .At 20% carbon content, the resistivity of Ag-graphite composite was 1.67 times as high as that of silver- copper plating graphite composite, the resistivity of Ag-Cu-graphite composite was 3.23 times as high as that of silver- copper plating graphite composite. The bending strength of silver-copper plating graphite composite was 2.17 times as high as that of silver- copper-graphite composite, and the bending strength was 2.11 times as high as that of silver- copper-graphite composite. The wearability of silver- copper plating graphite composite was also enhanced greatly at high carbon content.

利用该方法制备了50%铜含量的镀铜石墨粉，然后进一步制备了一系列相同碳含量的银-石墨复合材料、银-铜-石墨复合材料、银-镀铜石墨复合材料，对三种材料的机械、电气性能进行了综合对比，发现在低碳含量时镀铜石墨粉不能改善复合材料的上述主要性能，而在中高碳含量时则能明显优化复合材料的整体性能，提高了复合材料的电导率，使复合材料在中高碳含量时既具有较高的耐磨性同时也能负载较大的电流，复合材料的机械性能也因镀铜石墨粉的加入而大幅提高，20%碳含量时，银-石墨复合材料的电阻率是银-镀铜石墨复合材料的1.67倍，银-铜-石墨复合材料的电阻率为银-镀铜石墨复合材料的3.23倍，银-镀铜石墨复合材料抗弯强度是银-铜-石墨复合材料的2.17倍，是银-石墨复合材料的2.11倍，同时，在实验给定的条件下，中高碳含量时银-镀铜石墨复合材料的机械磨损耐磨性和通电磨损耐磨性都得以显著提高，银-镀铜石墨复合材料在实验时的接触电压降也更为稳定。

The carbon-accumulation environment and process in peatlands is one of main subjects in peatland science.

中文题名三江平原泥炭地聚碳环境和聚碳过程研究副题名外文题名 Study on carbon-accumulation environment and process of peatlands in Sanjiang plain 论文作者孟宪民导师刘兴土研究员学科专业环境科学研究领域\研究方向湿地环境学位级别博士学位授予单位中国科学院东北地理与农业生态研究所学位授予日期2002 论文页码总数93页关键词泥炭地学沼泽全球变化聚碳过程聚碳环境馆藏号BSLW /2003 /X171 /22 泥炭地聚碳环境和聚碳过程是泥炭地学研究的核心内容之一。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。