碳循环

Genetic diversity of carbon-nitrogen cycle was relative to soil organic matters,total nitrogen,carbon-nitrogen ratio,available phosphor and water content with different degrees.

碳氮循环基因多样性与土壤有机质、全氮、碳氮比、速效磷和土壤含水量等生态因子有不同程度的相关。

The results showed that RSAP used two primers of 18 nucleotides in which starting at the 3' end of each primer were restriction site sequences (4-6 bases),followed 12-14 bases of arbitary sequence, the differences between two primers were restriction sites and filler sequence; PCR am-plification was run for the first 5 cycles with an annealing temperature of 35℃, followed by 35 cycles with an annealing temperature of 48℃; the PCR reaction of 25 μL included 20ng DNA templates, 2.5mmol/L of Mg(superscript 2+), 0.2 mmol/L of dNTP, 1.5U of Taq DNA polymerase, 600nmol/L of each primers. RSAP is a new maker technique with simplicity, moderate throughput ratio and reliability. RSAP is of good reprodicibity and broad application.

结果显示，RSAP技术的引物为2条长度均为18bp的引物，引物的3'端为4~6个碱基的限制性酶切位点序列，接着是12~14个碱基的随机序列，2条引物的限制性位点和随机序列不同：PCR扩增的前5个循环采用35℃的退火温度，随后的35个循环采用48℃的退火温度；在25μL反应体系中，模板DNA用量为20ng，Mg(上标 2+)浓度为2.5mmol/L dNIPs浓度为0.2 mmol/L，Tap DNA聚合酶用碳为1.5U，2条引物浓度均为600mmol/L；RSAP技术重复性好，适用性广泛，是一种操作简便、产率中等、稳定可靠的DNA标记技术。

Thus, Dr Bala's model can be told to replace all the world's forests with

以往大多数气候变化模型，是根据温室气体排放计算地球如何吸收和辐射热量，但这次的模型囊括了诸多分支领域：碳是如何循环的，该循环又是如何影响气候的。

And the electroreduction process of nitrobenzene on WC powder electrode in basic solution is investigated by cyclic voltammetry, linear potential sweep and chronoamperometry. In the process of electroreduction of nitrobenzene on WC powder electrode, liquid phase mass transferring may be the control step.

并且也用循环伏安、线性扫描和恒电位阶跃等测试方法研究了碳化钨粉末电极在碱性介质中析氢和还原硝基苯的电化学特性，发现碳化钨在电催化还原硝基苯过程中，可能主要受反应物的液相传质控制。

This paper reviewed the research on dynamic and balance of soil nutrient pool under long-term fertilization conditions,mainly about some active aspects which included dynamic variations of total nitrogen,available N,total phosphorus,available P,total potassium,available K,and organic carbon in soil; dynamic variations of ammonium N,amino acid N,amino sugar N,unknown N,non hydrolyzable N and microbiomass N in soil nutrient pool; changes of Ca2-P,Ca8-P,Al-P,Fe-P,O-P,labile organic P,moderately labile organic P,moderately stable P,highly stable P and microbiomass P in soil; changes of loosely,stably and tightly combined humus,humic and fulvic acids in soil carbon pool; effects of long-term fertilization on organic-mineral complex status in soil; nutrients cycling and balance of agricultural soil nutrients pool.

扼要地概述了国内外近年来关于长期施肥条件下土壤养分库的动态与平衡方面的研究成果。主要介绍并讨论了土壤氮、磷、钾养分全量及有效量的动态变化，土壤有机碳含量的动态变化；铵态氮、氨基酸态氮、氨基糖态氮、酸解未知态氮、非水解残渣氮及微生物体氮在土壤氮库中的动态变化；Ca2 P、Ca8 P、Al P、Fe P、闭蓄态磷，活性有机磷、中度活性有机磷、中稳性有机磷、高稳性有机磷及微生物体磷在土壤磷库中的动态变化；土壤碳库中松结态腐殖质、稳结态腐殖质、紧结态腐殖质以及富里酸和胡敏酸的动态变化；长期施肥对土壤有机无机复合状况的影响；农田土壤养分库的养分循环与养分平衡。

A vast amount of carbon is swilling about or sitting in the deep sea below 200 metres, where a biological pump pushes it round in such a way that any carbon atom entering the depths from the atmosphere will return to the surface every 500-1,200 years.

巨大数量的碳进入到200米的深海附近或之下，在那里生物泵以这种方式推动着它做循环运动，即任何从大气进入到这一深度的碳原子，将每隔500到1200年返回到海面。

Plants with carbon capture and sequestration. To further progress "cleaner coal" IGCCtechnology in China, the US Trade and Development Agency announced its

GE和神华将负责新的清洁煤技术的研发以改善大规模气化和整体煤气化联合循环的性价比，并联合跟踪大规模气化和整体煤气化联合循环计划以实现碳捕捉。

The voltammetric behavior and oxidation mechanism of loperamide were investigated by cyclic voltammetry and coulometry at a multi-wall carbon nanotube paste electrode.

用循环伏安法和控制电位库仑法研究了洛哌丁胺在多壁碳纳米管碳糊电极上的伏安行为及反应机理。

This Sm-catalyzed reaction firstly efficiently realized the catalytic cycle in the tandem rearrangement/reduction reaction of α-hydroxy epoxides, and moreover the diastereoselective amplification could be distinctly observed when two C1 epimers in substrate were subjected to this catalytic tandem reaction.

该催化的多功能串联反应，高度非对映选择性地一步控制了含有季碳的三个相邻立体中心，有效地构建了&2-季碳1，3-二醇&结构单元，首次实现了此类重排—还原过程的催化循环，其中对于两个C1位的差向异构体底物，此反应具有明显的非对映选择性放大特点。

Three theories dominate:(1) it is being dissolved in the ocean, and then it precipitates to the sea bottom as carbon rain; or (2) it is being deposited in soils by microbes; or (3), most controversial, the lost carbon is fueling growth of the world's savanna grass, or being turned into tree wood, on an imperceptible but massive scale that we haven't yet been able to measure.

其中有三个理论作为主导：(1)被海洋溶解了，最终作为碳雨沉到洋底。(2)被微生物降解到泥土中。(3)最具争议的，消失的碳变成了热带草原，或者成了树木，以一种我们未曾察觉但是却很容量很大的循环存在。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。