乙酸纤维素薄膜电泳实验材料和缓冲液的改良替代研究

选用新鲜鸡蛋清作为蛋白电泳样品,通过对巴比妥巴比妥钠、硼酸盐和磷酸盐三种常用缓冲溶液的对比电泳实验研究,综合考虑电泳效果、试剂毒性和药品价格三方面因素,发现鸡蛋清和硼酸盐缓冲溶液完全可以替代传统教学中使用的人血清和巴比妥巴比妥钠缓冲溶液,作为高校蛋白质电泳基础实验教学中的新型实验材料和缓冲溶液.     

无机洗涤助剂的进展

介绍了国内外洗涤助剂的发展状况，传统洗涤助剂磷酸盐被限制，沸石类助剂有局限，层状硅酸钠以优良的洗涤性能，环保无污染的特点，成为洗涤工业的新宠。     

靠水吃水

印度一家公司最近在利用水发电领域有了全新的突破：他们在水中加入人造钴和覆有磷酸盐的单晶硅树叶,这些“树叶”就如同绿色植物那样进行光合作用,产生源源不断的电麓。利用这个装置,仅仅这样一小杯水就能给～栋小屋提供一天的生活用电呢！     

甘氨酸的十二钼磷酸盐的合成、表征及晶体结构

首次合成了甘氨酸的Keggin结构十二钼磷酸盐[HGly]3[PMo12O40]·5H2O(Gly::甘氨酸glycine)单晶体,并对晶体结构进行了精确测定(R=0.0330),该晶体为单斜晶系,属P21/C空间群;HGly 和杂多金属氧酸盐离子[PMo12O40]3 以弱的氢键和静电作用相结合.通过元素分析、IR、UV、TG-DTA和NMR等手段对标题化合物进行了表征,讨论了酸度对合成标题化合物的重要影响.     

Preparation and characterization of metakaolin-phosphate cement

We prepared cold-setting cement with metakaolin from kaolin dehydrated at 800 ℃ and phosphate, and studied the phase composition, microstructure and setting reaction mechanism of the cementing material by means of infrared spectroscopy, thermogravimetry, X-ray diffraction, and scanning electron microscopy. The metakaolin-phosphate cement is predominantly amorphous, where the phases responsible for chemical setting are mainly amorphous aluminophosphate hydrates. The reactivity of metakaolin depends on the particle size. Metakaolin particles of 1.75 μm in D50 have an acid dissolution index up to 18.45%, and the reaction with phosphate at room temperature to form metakaolin-phosphate cement takes only 6 h. The so obtained cement shows a compressive strength of 92.5 MPa after 7 d and keeps its amorphous phase at 1 000 ℃, demonstrating better bonding and mechanical properties and higher stability at a medium or high temperature.     

硅磷酸盐玻璃缓蚀剂在地热井阻垢中的应用研究

为解决内蒙古地矿局矿业公司1号地热井的结垢问题,对磷硅酸盐玻璃缓蚀剂除垢法进行了研究,发现硅磷酸盐玻璃缓蚀剂使水中的钙、镁离子与硅磷酸盐玻璃形成络合物,极大降低了水中钙、镁离子的含量,从而降低水的硬度最终抑制结垢.分别从酸的用量、PH值、温度、水流速度等方面进行试验研究,筛选出最佳条件.经过处理的地热水中微量元素含量变化很小,温度降低幅度不大(温度下降5℃左右),除垢效果良好.该法生产工艺简单,虽然药剂价格比较高,但用量少,投加简单方便.     

含DMPP硫硝铵不同基追肥比例对小青菜硝酸盐累积及品质的影响

采用土培试验对含硝化抑制剂DMPP(3，4-二甲基吡唑磷酸盐)硫硝铵(ASN)氮肥(简称ASN DMPP)不同基追肥比例对小青菜硝酸盐累积及营养品质的影响进行了探讨．结果表明，等氮量(每千克土用0．5g氮)施用条件下基肥75％、追肥25％的基追肥比例不仅可提高蔬菜产量、降低硝酸盐含量，还可提高Vc、氨基酸、Zn、N、K含量，改善了蔬菜品质。     

谣言粉碎机

碳酸饮料=骨质酥松 许多人一拿起可乐一类的碳酸饮料,许多老人就会说,“报纸上都说了,喝可乐老了会骨质疏松!”那么它会不会对骨骼健康造成隐患呢？有人说,损害骨骼健康的主要原因是人体内过多的磷酸盐或过多的咖啡因会阻碍人体对钙的吸收。     

"磷""膦""(鏻)"的用法辨析

磷为处于元素周期表中第3周期、VA族、第15号化学元素。磷存在于人体所有的细胞中,是维持骨骼和牙齿的必要物质,还是使心脏有规律跳动、维持肾脏正常     

MPS／CAS Cooperation on Solid State Chemistry

The cooperation between Zhao Jingtai and the Max Planck Institute for Chemical Physics of Solids was initiated immediately after the research field Inorganic Chemistry (headed by Rudiger Kniep) started its work in Dresden. The first contact was established when Zhao Jingtai came from the Xiamen University as a Max Planck fellow. At that time, the chemistry of the intermetallic compounds of rare-earth metals was chosen as a topic of joint investigations with Yuri Grin. Later, the solid state chemistry of the borophosphates was added to the program of concerted research in the group of Zhao Jingtai and the Max Planck Institute for Chemical Physics of Solids. The cooperation was intensified after the move of Zhao Jingtai to the Shanghai Institute of Ceramics and the establishment of an Inorganic Materials Chemistry and Physics Group there. The results of the investigations performed from 1999 to 2003 were published in more than 25 scientific papers and more than ten contributions to scientific conferences.