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Sodium amalgam was synthesized according to the method developed by Shanghai Silicate Research Institute, Academy of Sciences of China, by mixing high purity sodium electrolytically purified from industrial grade sodium at 350℃ with amalgam and using ceramic material containing a small amount of Na_2O as separating film.

作者采用中科院上海硅酸盐研究所研究成功的钠汞齐制造工艺,以含少量Na_2O的陶瓷材料为隔膜,在350℃下电解工业级金属钠制成高纯钠,再合成出钠汞齐。

The study shows that almost all the feldspar in the alkali-granite is perthite, the host-crystal is microcline, the chadcrystal could be either albiter or oligoclase. The Alkali-amphibole is either manganese-magnesia-arfvedsonite or arfvedsonite, and all the alkali-pyroxene is aegirine.

结果表明,该区富碱花岗岩几乎所有的长石均为条纹长石,主晶为微斜长石或高微斜长石,客晶为钠长石或更长石,碱性角闪石为含锰镁质钠铁闪石或钠闪石,碱性辉石均为霓石。

It is the fluorosilicic ion that exsits in the slurry and plays an important role in flotation, fluorosilicic ion not only reacted with Fe〓 on the surface of aegirine to form ionic compound, but also formed stable Si-F bond in Si-O etching reaction. Only ionic compound was obtained when it was attached to hematite surface according to the theories of coordination chemistry, Compared with SiF〓, Fatty acid ion preferentially acts with Fe〓 on the minerals surface, therefore, SiF〓 Can't obstruct the adsorption of collector on the surface of hematite completly, but can reduce the flotation recovery of aegirine selectively.

运用FTIR、XPS等测试方法仔细研究了氟硅酸盐抑制剂对含铁硅酸盐钠辉石的选择性抑制作用机理,氟硅酸盐在弱酸性条件下对赤铁矿浮选的抑制作用很微弱,而对含铁硅酸盐钠辉石强烈抑制,从而扩大了两者之间的浮选差异;SiF〓是矿浆中起抑制作用的主要成分,SiF〓不仅与钠辉石表面的Fe〓形成离子型配合物,而且还与Si-O键形成稳定的Si-F共价键,而与赤铁矿表面只能形成离子型配合物,根据晶体配位场理论,与SiF〓相比较羧酸根离子将优先与矿物表面Fe〓发生配位作用,因此SiF〓的存在并不能完全阻碍捕收剂在赤铁矿表面的吸附作用,却能够选择性地抑制钠辉石的上浮。

Al impurity, the floatabilities of hematite and aegirine were resemble, which is contributed to the existence of structrual iron ion on surfaces of both minerals. It is the structrual iron ion that accelerates the floatability of aegirine greatly and leads to difficult separation with hematite. 2. The basic mechanism of actions of fluorosilicate salts as selective depressants of aegirine during the direct flotation of hematite was investaged detaily by using FTIR and XPS spectrocppy, fluorosilicate salts are poor depressants for hematite, but are very strong depressants for iron-containing silicate such as aegrine in weakly acid medium, which can enlarge the flotation differences between two minerals.

运用X射线衍射、俄歇能谱等测试手段研究了赤铁矿与钠辉石纯矿物的晶体结构特征,表面破裂面的元素组成与赋存状态,发现在白云鄂博不同的矿床(氧化矿段,原生矿段,风化矿段)存在着三种颜色与可浮性均有所差别的钠辉石,其可浮性的差异主要是由于表面含铁量及Ca、Al等杂质含量的不同而引起的,结构Fe〓的存在导致钠辉石可浮性剧增从而与赤铁矿难以分离。

Objective To explore the effect of different anticoagulants on quantitative assays for HBV DNA using real-time PCR technique. Methods Peripheral blood samples were obtained from 40 patients infected with HBV. Serum and plasma samples from three kinds of anticoagulants such as heparin, trisodium citrate, and dipotassium EDTA were stored at -20℃.

目的 探讨用实时荧光定量PCR技术检测乙型肝炎病毒DNA拷贝时,不同抗凝剂对乙型肝炎病毒DNA定量检测的影响方法采集40例乙型肝炎患者血液,分别置于不含抗凝剂及含肝素钠、枸缘酸钠、EDTA-K2抗凝剂的无菌试管中,分离血清和血浆后于-20℃冰箱保存备用。

Methods peripheral blood samples were obtained from 40 patients infected with hbv. serum and plasma samples from three kinds of anticoagulants such as heparin, trisodium citrate, and dipotassium edta were stored at -20℃.

采集40例乙型肝炎患者血液,分别置于不含抗凝剂及含肝素钠、枸缘酸钠、edta-k2抗凝剂的无菌试管中,分离血清和血浆后于-20℃冰箱保存备用。

The process comprises the subsequent steps a through e: a reacting phthalic anhydride with fluorobenzene or a derivative thereof in appropriate reaction conditions; b over reducing the product obtained in step a at the ketone moiety; c reducing the product obtained in step b with sodium dihydro-bis (2- 15 methoxyethoxy) aluminate to the corresponding alcohol ; d chlorinat ing the alcohol obtained in step c ; e inserting CO into the product obtained in step d through an appropriate Pd-containing catalytic system.

该方法包括以下步骤a~e:a使邻苯二甲酸酐与氟苯或者其衍生物在适当的反应条件中反应;b完全还原步骤a中获得的产品的酮部分;c用二氢-二(2-甲氧基乙氧基)铝酸钠将步骤b中获得的产品还原成相应的醇;d对步骤c中获得的醇进行氯化;e通过适当的含Pd的催化剂体系,将CO插入到步骤d中获得的产品中。

The experimental products include crystal phase quartz, feldspar (alkila-feldspar, albite, K-feldspar), zinnwaldite and topaz, a melt phase and a trace vapour. The solid products were been studied by optics method, electron microprobe and X-ray analysis. The results show that liquidus temperature raises slightly and solidus temperature falls down obviously and that the upper temperature limit raises for the stability field of quartz and topaz, and falls down for the stability field of alkila-feldspar as F contents in crease.

实验淬火产物包括结晶相石英,长石(碱性长石,钠长石、钾长石),铁锂云母和黄玉及玻璃相和微量流体,对固相淬火产物进行了系统和详细的显微观察及电子探针和x射线分析,研究了F对钠长花岗岩液、固相线温度、相关系和相组合的影响和含F钠长花岗岩的结晶序列和熔体演化、F在流体和熔体之间的分配及F对花岗质熔体结构的影响,对含黄玉矿物组合进行了一系列热力学矿物平衡计算,获得如下重要结论

The present invention adopts ammonium salt solution as leach, and adopts the liquid-phase oxidation activating agent formed from surfactant sodium ligno-sulfonate or sodium dodecyl sulfonate, liquir phase oxidation catalyst Cu(2+) and sulfur-extracting agent tetrachloroethylene to implement quick leaching process of sulkfide mineral in gas-liquid-solid three-phase reactor, all the sulfurs contained sulfide in mineral powder can be converted into elementary sulfur and sulfuric acid radical, the contained zinc, copper, nickel, cobalt, lead, cadmium and silver can be changed into soluble salt, and fed into leach or remained in the leaching out slag.

本发明涉及的有色金属硫化矿的铵盐液相氧化直接浸出方法,其特征在于:采用铵盐溶液作浸出剂,采用由表面活化剂木质磺酸钠或十二烷基磺酸钠,液相氧化催化剂Cu2+、萃硫剂四氯乙烯组成的液相氧化活化剂,在气液固三相反应器内,实现硫化矿的快速浸出过程,矿粉中各种硫化物所含的硫转变为单质硫和硫酸根,所含的锌、铜、镍、钴、铅、镉、银等变成可溶性盐类进入浸出液中或留在浸出渣中,消除传统流程中二氧化硫,硫化氢,氮氧化物及含砷含汞含铅等有毒烟气的排放。

Results were shown as followings:(1) Sodium selenite at 0~2.5 μmol/L significantly increased the antioxidative capacity of L-02 cells without having remarkable impact on SMMC-7721 cells;(2) Sodium selenite at concentrations above significantly increased telomerase activity, hTERT gene expression and telomere length of L-02 cells without significant impact on SMMC-7721 cells;(3) Sodium selenite at higher concentrations (larger than 5 μmol/L) resulted in peroxidation of L-02 cells, while scutellarin significantly counteracted its effect;(4) Selenium-rich amino acids from silkworm pupas in the range of 0.5~2.5 μmol/L Se significantly inhibited SMMC-7721 cell growth, induced apoptosis and cell cycle change, and the generation of reactive oxygen species. In contrast, sodium selenite and selenomethionine only had weak impact on them at the same concentrations;(5) A new selenium-containing protein was found from selenium-rich silkworm pupas, which is worthy to be study further;(6) An expression vector containing ansense RNA of hTERT gene were constructed and used to transfect SMMC-7721 cells. They were observed to inhibit hepatoma cells.

结果如下:(1)0~2.5μmol/L亚硒酸钠显著性增强L-02细胞的抗氧化能力;而对SMMC-7721细胞的作用不显著;(2)该浓度硒显著性提高L-02细胞端粒酶活性、增强hTERT基因表达和延长细胞端粒长度;而对SMMC-7721细胞的作用均不显著;(3)高浓度硒(5μmol/L以上)显著性抑制L-02细胞生长、致细胞过氧化,灯盏花素能拮抗硒所致过氧化、降低硒毒性;(4)0.5~2.5μmol/L富硒蚕蛹氨基酸显著性抑制肝癌细胞SMMC-7721生长、导致细胞凋亡和周期改变、诱导细胞产生活性氧,同浓度亚硒酸钠和硒代蛋氨酸对其抑制不显著;(5)富硒蚕蛹蛋白经分离纯化和鉴定后发现存在一新含硒蛋白,其结构和功能有待研究;(6)通过已有的含hTERT基因质粒,成功构建hTERT反义RNA表达质粒,转染SMMC-7721细胞后对其生长具有抑制作用。

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