查询词典 molybdenum

When chiral molybdenum 2'-pyridinyl alcoholate complexe was used as catalyst, the enantiomeric excess was 79. 5% at 0℃ in CH〓Cl〓.

我们目前经实验优化取得的最佳反应条件是：使用MoO〓〓作催化剂，在CH〓Cl〓中于0℃反应，所得产物的ee值达到了79.5％。

In this paper, chiral molybdenum or tungsten 2'-pyridinyl alcoholate complex catalyzed asymmetric epoxidation of cis-1-propenylphosphonic acid in H2O was reported.

目前磷霉素的生产是通过以Na2WO4为催化剂、在乙醇中以30%的H2O2将顺丙烯膦酸环氧化得到消旋产物，再利用α-苯乙胺进行拆分而得到[2，3]。

Study on the preparation of γ-alumina-supported molybdenum phosphide hydrofining catalysts;2. Silica-supported molybdenum phosphide s were prepared in a fixed bed reactor by an in situ reduction method from their oxidic precursors.

以SiO2为载体，用钼酸铵和磷酸氢二铵作钼源和磷源，采用共浸渍法制备了负载型磷化钼氧化态前体；在固定床反应器上，用H2原位还原制备了MoP/SiO2催化剂。

This paper stated that molybdenum slime in production of 57 grade molybdenum concentration,which can't be dewatered using usual filteration were studied by TT series ceramic filters dewatering.

对在&57钼精矿&生产过程中产生的用常规过滤无法进行脱水的钼细泥，用TT系列陶瓷过滤机进行脱水研究，完全解决了钼细泥的脱水问题，保证了&57钼精矿&生产工艺的畅通。

Research of minerals processing experiment suggested a flotation flowsheet,which consists of selective flotation of molybdenum sulfide using kerosene as collector,sodium-silicate as dispersant of slimes,then flotation of molybdenum oxide using modified sodium-silicate as depressant of gangue,Rt as collector.

研究表明，以水玻璃为矿泥分散剂、煤油为捕收剂浮选硫化矿，以改性水玻璃为脉石抑制剂、RT为氧化钼矿捕收剂优先浮选硫化矿再浮氧化矿，可从含Mo 0.34%原矿中，获得品位46.41%的硫化钼精矿，品位27.65%的氧化钼精矿；钼总回收率78.01%。

On the other hand, the molybdenum species of Mo/HZSM-5 catalyst is reduced and carburised during the aromatization of CH4 and this leads to the formation of different kinds of molybdenum species.

Mo／HZSM-5具有较好的甲烷无氧芳构化性能，但迄今在Mo／HZSM-5仅进行了甲烷的无氧芳构化研究，尚未实现甲烷的有氧芳构化反应。

Imageological methods, such as ultrasound and molybdenum tarsget are not sensitive for the diagnosis of breast sclerosing adenosis. IHC staining of myoepithelium is an important for the diagnosis of breast sclerosing adenosis demarcated with breast cancer. Non-palpable lesion of breast sclerosing adenosis can be surgically exsected with the guide wire localization under molybdenum target.

B超、钼靶等影像学方法对于诊断硬化性腺病的敏感性较差；免疫组化染色肌上皮标记SMA、P63是鉴别乳腺硬化性腺病与乳腺癌的重要指标；对于不能触及病变的硬化性腺病可采用钼靶摄片下钢丝定位后外科切除。

Wethers with permanent rumen fistula were used to determine concentration of plasma copper, activity of cuproenzyme, apparent digestibility of copper, and disappearance rates of DM and NDF of Chinese wildrye in sheep given different copper supplements to diets with low or high molybdenum. All sources provided 16 mg of added Cu/kg of DM. Molybdenum was added as sodium molybdate.

2利用安装有永久性瘤胃瘘管的杂交一代羯羊作为试验动物，采用单向分类设计，在不同钼水平下通过测定血浆铜浓度、含铜酶活性、铜表观消化率、羊草干物质及NDF消失率，比较不同饲料铜源对绵羊铜代谢和粗料消化能力的影响，铜的添加水平均为16mg·kg~(-1)，钼的添加形式为钼酸钠。

Crop of western world molybdenum is smooth, molybdenum price appears piece rise trend.

西方世界钼产量平稳，钼价格呈现出上涨趋势。

Sichuan Nico State-run New Materials Co., Ltd.- to lithium, cobalt, copper, nickel, lead, zinc, molybdenum, silver mining, elections, Metallurgical, chemical-based industry. In Sichuan, Jiangxi, Tibet, Qinghai and other places have a more than mine and smelting plant, is an important lithium, cobalt, copper, nickel integrated production base. The corporation has an annual production capacity of 3,000 tons of lithium hydroxide, lithium carbonate 2000 tons, 1,500 tons of electrolytic nickel, copper and electrical copper 5000 tons, 500 tons of lithium cobalt oxide, cobalt and cobalt board 500 tons of salt, lead and zinc concentrate, 20,000 tons, MOLYBDENUM 1200 tons, 26 tons of silver production scale, product widely used in petrochemical, aerospace, automotive industry, high-energy batteries, pharmaceuticals, ceramics, aluminum and other industries areas, in national economic development plays an important role in promoting.

公司业已形成年产氢氧化锂3000吨、碳酸锂2000吨、电解镍1500吨、铜粉及电铜5000吨、钴酸锂500吨、钴板及钴盐500吨、铅锌精矿20000吨、钼精矿1200吨、白银26吨的生产规模，产品广泛应用于石油化工、航空航天、汽车工业、高能电池、医药、陶瓷、炼铝等行业领域，在国民经济发展中起着重要推动作用。

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。