二氧化镁
1.Determination of P_2O_5,CaO,Fe_2O_3,Al_2O_3,MgO and SiO_2 in phosphorus rock by X-ray fluorescence spectrometry
2.Study on the ICP-AES Determination of TFe,SiO_2,CaO, MgO,Al_2O_3 in Pellet Iron Ore
3.A PVC/PNBR TPE was prepared based on PVC and powdered NBR(PNBR) using magnesium hydroxide(MH) as flame retardant,and the influence of the flame-retardant synergists,such as diantimony trioxide(Sb_2O_3),zinc borate(ZB),ammonium heptomolybdate(AOM),zinc oxide(ZnO) and manganese dioxide(MnO_2) on the properties of above TPE was investigated.
4.Structure, Electronic and Optical Properties of Er-doped Si-rich SiO_2 Thin Films and Reactivity of Water with Pd-deposited MgO(100) Thin Films on Mo(100)
5.Using silicon dioxide, magnesia, aluminum hydroxide to react with sulfonic acids, color fixatives under standard proportioning, through curing and drawing into thread-like form, this product is made with mechanical twisting as per specific speed and number of strands after drying treatment, featruing a certain tensile strength.
6.In this paper, Sol-Gel method was used to produce nano- magnesiam, using MgCl_2·6H_2O and ammonia liquor as the raw material. The gels were treated in fluid N_2. The surface area of samples were characterized by ASAP-2020, X-ray diffraction (XRD) and Transmission Electron Microscopy(TEM).
7.The results show that: the fillers of SiO2 based investment consist of SiO2, Al2O3 and MgO, and the binder is NH4H2PO4 for SiO2 based investment, the bulk density and the compression strength decrease, the apparent porosity and the thermal expansion increase, when the specimens are heated to 900℃; the fillers of Al2O3 based investment consist of Al2O3 and MgO, and the binder is NH4H2PO4; for Al2O3 based investment, the bulk density decreases and the apparent porosity increases when the specimens are heated to 900℃; the fillers of MgO based investment consist of MgO and Al2O3, and the binder is CA cement; for MgO based investment, the compression strength decreases and the thermal expansion increases greatly when the specimens are heated to 900℃.
8.The environment resistance of color chlorosulfonated polyethylene(CSM)compound was studied with dicumyl peroxide as vulcanizator ,N ,N′-metaphenylene as co-vulcanizator, ester(WB 350)(10～15 phr)/trioctyltrimelliteta (TOTM)(8～10 phr)/ethylene-vinyl acetate copolymer(15～20 phr) as complex plasticizers,LEE powder(30～40 phr)/calcined clay (45～55 phr)/precipitated barium sulfate(40～50 phr)as fillers,aluminium hydrate(35～40 phr)/magnesium hydrate(20～30 phr)/antimony trioxide(10～15 phr) as flame retardants,and zinc stearate(1.0～1.5 phr) as surface treating agent in CSM(85～90 phr)/EPDM(15～10 phr) blended system.
9.and the microvilli appeared at the tip of RPE. The activity of CCO and Mg ++ ATPase decreased and MDA increased in retina at the 6th hour and on the 6th day and they recovered on the 14th day after light exposure.
10.MPP-a was oxidized with OsO 4 in THF containing catalytic pyridine at 0 ℃ and followed by glycol cleavage with sodium periodate in aqueous THF to give the methyl pyropheophorbide-d (MPP-d) which was reacted with carbon tetrabromide and triphenylphosphine to generate gem-dibromine substituted product at 3 b-position.
