硫

The physical and chemistry simulation on TSA process was established, and the mechanism of thaumasite formation was taken on further discussion.

摘 要：研究水泥砂浆试件在碳硫硅酸钙型硫酸盐侵蚀过程中的物理化学性能变化，对TSA过程进行模拟，进一步探讨碳硫硅酸钙的形成机理。

This proves that concrete can produce thaumasite in a sulfate environment over 15 ℃, and the existence of Mg2+ can accelerate the formation of thaumasite.

证明水泥混凝土在＞15 ℃的硫酸盐侵蚀环境下亦可生成碳硫硅酸钙，而Mg2+的存在对碳硫硅酸钙的形成过程具有加速催化作用。

The target compounds I_ provide possibility to construct different aryl alkynyl thio ethers.

甲硫基甲基苯基砜是一种用途十分广泛的有机硫试剂。

Methods: Eleven B-CLL patients were studied. Leukemic lymphocytes with (n=8) or without (n=3) P2z receptors were exposed in vitro to ATP, benzoylbenzoic-ATP, 2-methylthio-ATP(2MeSATP), adenosine-5′-［γ-thio］ triphosphate, and other nucleosides for 8h. Apoptosis was detected by electron microscopy, agarose gel electrophoresis, and quantitative TdT assay. Results:Apoptosis was detected only in leukemic lymphocytes with P2z receptors. By using the quantitative assay, ATP-inducing DNA strand breaks were found to occur specifically for BzATP, ATP and 2MeSATP, but not for ATP-γS and other nucleosides.

将表达P2z受体［P2z］与不含P2z受体［P2z］的两组CLL细胞分别同1.0mmol/L三磷酸腺苷体外培养8小时，以电镜、DNA凝胶电泳和定量DNA 3′端TdT法检测细胞凋亡；并对ATP、苯甲酰苯甲酸ATP、2-甲基硫ATP(2MeSATP)、γ-硫代ATP及其它核苷的诱导效应和氧化型ATP、1-［N，O-二(5-异喹啉碘酰基)N-甲基-L-酪氨酰］-4-苯哌嗪KN-62）的抑制效应做定量研究。

Bioleaching, by means of natural populations of Thiobacillus ferrooxidans and related Thiobacilli, for example, allows recovery of up to 70% of the copper in low-grade ores.

生物萃取，例如应用天然的氧化亚铁硫杆菌菌群和相关的硫杆菌，使低品级的矿石中铜的收率达到70％。

A strain TFD-9 that was able to degrade sulfur in coal was isolated from soil in a coal mine and identified as Thiobacillus ferrooxidans.

从湖南某煤矿附近的土壤中，分离出能有效脱除燃煤中硫的菌株TFD-9，鉴定为氧化亚铁硫杆菌。

Calculated results show that S〓, T〓, and T〓 electronic states are very close in energy for simple thiocarbonyl compounds such as CH〓CHS and 〓CS, and the excitation energies are relatively lower.

计算表明，对于简单的硫代羰基化合物CH〓CHS和〓CS，其S〓、T〓和T〓电子态的能量非常接近，并且激发能比较低，我们推测硫代羰基化合物的光化学反应很有可能是从能量较高的S〓态开始的。

Since the element sulfur has lower electro-negativity than oxygen and the C=S double bond is easier to be polarized than C=O double bond, thiocarbonyl compounds and carbonyl compounds have different reaction properties, and their photochemical reaction mechanisms often possess dramatic difference.

但是，由于硫元素较低的电负性和C=S双键较高的可极化性，硫代羰基化合物和羰基化合物有着本质不同的反应特性，光化学反应机理常常存在着戏剧性的差别。

After being extracted and purified, thiamine which has no fluorescence was oxidized to fluorescent thiochrome, then, it was extracted by n-butanol, the thiochrome in n-butanol were measured with spectrofluophotometer, and the thiamine was determined.

样品经提取、净化后，再利用碱性铁氰化钾K3Fe(N6将没有荧光的硫胺素氧化成能够发射荧光的硫色素，经正丁醇萃取后测定萃取液中硫色素的含量，从而实现对维生素B1含量的测定。

The sulfidic sulfur content in the residue fraction decreased and the thiophenic sulfur content increased with the heaviness of residue fraction.

脱硫受多种因素的影响[7]，如催化剂性能、工艺条件等，而且硫在渣油中的存在类型和分布也严重影响到硫的脱除效果。

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。