硫

The results show that jamesonite and pyrrhotite have good floatability in the pH range of 2-10 and marmatite has good floatability in the acid and it is difficult to separate these minerals. In the pH range of 6-8, the separation of jamesonite and pyrrhotite, marmatite is possible when using mercaptoacetic acid and mercaptoethanol as depressants. In case of the presence of Cu2+ ion, however, it is difficult to separate the three minerals. Infrared spectrum demonstrates that there are a number of function groups such as —SH,—COOH,—OH in the molecular structure of depressant.

结果表明：用丁黄药作捕收剂，脆硫锑铅矿和磁黄铁矿在pH 2~10范围内都有良好的可浮性，铁闪锌矿在酸性条件下可浮性好，三者分离困难；在pH 6~8之间，采用巯基乙酸和巯基乙醇作抑制剂，脆硫锑铅矿与磁黄铁矿和铁闪锌矿的分离是可能的；但铜离子存在时， 3种矿物之间的选择性分离是难以实现的。

The experimental results show that this new kind of chitosan derivative has the characters of both chitosan and dithiocarbamate.This compound has much better selectivity and capability for heavy metals.Meanwhile,it is convenient,safe and more jarless in acid solution.All results above show that this chitosan derivative has a good application foreground.

本文合成的二硫代氨基甲酸改性壳聚糖兼具天然高分子壳聚糖与二硫代氨基甲酸基的结构与特性，对重金属离子具有良好的选择性和优异的捕集效果，能同时去除多种重金属离子，而且具有使用方便、毒性小、抗干扰能力强、性能稳定等优点，具有良好的应用前景。

The experiment showed that As and lignosulphonate in solution could inhibit the growth of the strains.

经过研究，发现砷对氧化亚铁硫杆菌的生长有较大的抑制作用；氧化亚铁硫杆菌对砷黄铁矿的氧化速率明显快于黄铁矿，前者可达，0.2gFeAsS／L·h大约7倍于黄铁矿的氧化速率。

The results of RT-PCR show that zebrafish treaded TAA 10th day made adipogenetic and lipogenetic up-regulated on the 3th and 5th day, because on TAA treated control Data show that lipogenetic gene would up-regulate at 9th day, so overexpression of PPARγ enhance TAA induced fatty liver.

反转录聚合链反应结果显示转殖PPARγ经TAA处理十天后，在第三有提高的现象，但是从硫乙胺处理控制组的结果显示第9天时，脂肪生成相关基因才会上升，故PPARγ的表现加强了硫乙胺诱导脂肪肝的形成过程。

Several mixed control samples of manganic manganous oxide, manganese dioxide and manganese sulfate with various sulfur content were prepared by adding sulfuric acid with known concentration into high pure manganic manganous oxide. Then they were dried and mixed, and the content of sulfur was determined by high frequency infrared ray carbon sulfur analyzer.

向高纯四氧化三锰中加入已知浓度的硫酸，制备不同含硫量的四氧化三锰、二氧化锰、硫酸锰的混合物控制样，将制备好的控制样干燥、混匀后，用高频红外碳硫分析仪分析控制样中的硫含量。

There exist both dimer D2 and diethyl dithiocarbamate salts on the surface of marmatite at open-circuit potential, which can not effectively adhere on the surface of marmatite.

在开路电位条件下，铁闪锌矿表面存在双乙硫氮和乙硫氮金属盐，但不能有效地附着在电极表面。

The heptanal butyl mercaptal was synthesized with heptanal, sodium thiosuifate and 1bromobutane as raw materials.

以正庚醛、硫代硫酸钠和溴代正丁烷为原料，合成了正庚醛正丁硫醇缩醛。

Acetaldehyde(0\^1 mol) was treated with n propylthiol(0\^1 mol) at 35 ℃ for 20 min to yiled 72% acetaldehyde propyl mercaptal .

以 0 。1 mol乙缩醛和 0 。1 mol 正丙硫醇为原料，35℃下在四氯化碳中反应，经红外光谱，色谱，质谱，元素分析以及核磁共振谱检测，确证了产物为乙醛正丙硫醇缩醛。

Mercapto derivatives yield persulfide products that are potential sources of sulfane sulfur, which may modify protein function by reacting at important cysteinyl domains.

疏基衍生物产生的过硫化物是硫烷硫的潜在来源，后者可通过与重要的半胱氨酸区域反应来调节蛋白功能。

Mercapto deriaties yield persulfide products that are potential sources of sulfane sulfur, which may modify protein function by reacting at important cysteinyl domains.

疏基衍生物产生的过硫化物是硫烷硫的潜在来源，后者可通过与重要的半胱氨酸区域反应来调节蛋白功能。

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。