甲基溴

The invention uses the fermentation liquor of one Escherichia coli generating polysialic acid as material, filters and removes thallus, adds some solvents as sodium chloride and alcohol into supernatant to deposit polysialic acid, dissolves the polysialic acid deposits via deionized water, filters to remove modified protein, uses alkali prolease to treat filtrate, complexes deposits via cetyl pyridinium chloride or cetyltrimethylammonium bromide, and dissociates, uses over alcohol to deposit polysialic acid, dissolves the deposits via ultra-pure water, grades and purifies via chromatography column, collects and dialyzes eluent, cools and dries to obtain polysialic acid.

本发明以一株产聚唾液酸大肠杆菌的发酵液为原料，经过过滤去除菌体，上清液加入适量氯化钠和乙醇等溶剂沉淀出聚唾液酸，聚唾液酸沉淀用去离子水溶解，再用过滤去除变性蛋白质，滤液经过碱性蛋白酶处理、氯代十六烷基吡啶或十六烷基三甲基溴化铵络合沉淀并解离后，再用过量乙醇沉淀出聚唾液酸，聚唾液酸沉淀用超纯水溶解，用层析柱进行分级纯化，收集洗脱液经过透析，冷冻干燥得聚唾液酸产品。

Pathogens exist as spores or other dormant forms with the absence of host plants and they have high resistance, so high concentration of methyl bromide is required while fumigating. This is likely the main reason of the environmental pollution.

土壤甲基溴熏蒸的目标在于杀死具有较高耐药性的病源物的孢子或其他休眠形式，熏蒸所需浓度高，这也是造成环境污染的原因。

If you're a gamer or into heavy graphics, you'll need 128 MB.

如果你是一个玩家或图形成沉重，您需要128甲基溴。

The cationic surfactant cetyltrimethyl ammonium bromide was used to modify the surface of the supported nano bimetal alloy.

将十六烷基三甲基溴化铵用于负载型纳米二元合金的表面改性，改性后的材料对TCE的还原脱氯性能提高。

Next, the oxidative refolding of denatured-reduced Lysozyme in presence of cetyltrimerthyl ammonium bromide and β-cyclodextrin were investigated.

接着研究了去污剂十六烷基三甲基溴化铵和β-环糊精的人工分子伴侣体系对变性-还原溶菌酶的氧化复性效果。

Static adsorption experiments were carried out to investigate the adsorption of sodium dodecyl benzene sulfonate and cetyltrimethyl ammonium bromide on soils, and to analyze the effect of surfactants on sorption of diesel oil.

通过静态吸附实验，研究土壤对十二烷基苯磺酸钠和十六烷基三甲基溴化铵的吸附行为，探讨表面活性剂对柴油吸附的影响。

It was based on the reaction between thiamine and hexacyanoferrate in sodium hydroxide medium to give CL signal,which was enhanced by cetyltrimethyl ammonium bromide.

基于在N aOH碱性中，铁氰化钾可以直接氧化维生素B1产生化学发光，而十六烷基三甲基溴化铵的存在可以大大增强这一化学发光强度，结合流动注射分析技术，在研究并优化化学发光条件的基础上，建立了测定维生素B1的化学发光分析方法。

ZnS photocatalyst was synthesized in the presence of surfactant cetyltrimethyl ammonium bromide.

在表面活性剂十六烷基三甲基溴化铵存在时，合成了ZnS光催化剂。

Highly stabilized mesoporous molecular sieves were synthesized by the hydrothermal method using natural clay and sodium silicate as raw materials and cetyltrimethyl ammonium bromide as a template.

以天然黏土和硅酸钠为原料、十六烷基三甲基溴化铵为模板剂，水热法合成了有序性好的高稳定性介孔分子筛。

ASpheric FeNi nanoparticles with average diameter of about 70 nm were obtained in the system of cetyltrimethyl ammonium bromide/H_2O,while most of the products were nanofilms/rods with the addition of cyclohexane; nearly monodisperse FeNi nanoparticles with average diameter of about 25 nm were prepared in the system of PEG/cyclohexane/H_2O.With the assistance of ultrasonic,a no-surfactant method to 8.5 nm FeCo nanocrystals with high Ms(＞200.5 emu/g)has been developed with economical FeCl_3·6H_2O as iron sources.

a以水合肼为还原剂在十六烷基三甲基溴化铵/H_2O体系中得到了平均粒径约70 nm的FeNi合金球形颗粒，当在此体系中加入环己烷时样品主要形态为纳米膜/棒；于PEG/环己烷/H_2O体系中制备了单分散性较好的平均粒径约25 nm的FeNi合金纳米颗粒，合金纳米颗粒粒径随金属离子浓度减小而减小。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。