牛蜱粗提物对家兔及人的抗凝血作用的实验研究

通过体外试验，观察牛蜱粗提物对家兔及人血浆的抗凝血效果．通过测定与比较加入牛蜱粗提物与未加牛蜱粗提物的兔血浆和人血浆的血浆复钙时间(RT)、凝血酶原时间(PT)、白陶土部分凝血酶激活时间(KPTT)，发现牛蜱粗提物能使兔血浆及人血浆RT、PT、KPTT均显延长，且其作用随着牛蜱粗提物用量的增大而增强．实验结果显示牛蜱粗提物具有明显的抗凝作用．     

高岭土煅烧过程白度和失重的变化及应用

本文通过测定高岭土煅烧过程中白度、失重变化,初步探讨煅烧过程中有机物质及铁、钛对白度的影响。     

Influence of Thermal Treatment on the Structure and Thermal Properties of Kaolin Modified Polyester Fibers

Modified polyester fibers were obtained using 2% and 6% of kaolin blends through melt spinning.The influences of two thermal treatments maintaining the original tension(180 ℃×2 min and 200 ℃×1 min)on the structure and properties of fiber were compared.The changes of grain size and crystallinity of fiber were investigated by X-ray diffraction(XRD).The changes of thermal properties of fibers were analyzed using dynamic mechanical analyzer(DMA).The results show that the crystalline structure of kaolin modified polyester fiber doesn't change with the thermal treatment.With the kaolin content increasing,the grain size of fiber changed.The higher the thermal treatment temperature is,the higher the crystallinity of fiber is.There are two glass-transition temperatures for kaolin modified:the lower one is the glass-transition temperature of polyester fiber matrix,and the higher one is derived from the heterogeneous blend of polyester matrix and nano kaolin.The higher the kaolin content is,the higher the glass-transition temperature is.Thermal treatment could increase the compatibility of polyester matrix and nano kaolin.There was only one glass-transition temperature for the thermal treatment fiber,and the heat resistance of fiber was improved.Thermogravimetric analysis-differential scanning calorimetry(TGA-DSC)results of kaolin modified polyethylene terephthalate(PET)matrix indicate that the decomposition temperature of PET fibers,kaolin modified PET fibers,and thermal treated fibers were little different within 40%-60% of weight loss rate range.     

以廉价高岭土和硅藻土为原料合成方沸石分子筛膜

以廉价高岭土和硅藻土为主要原料,在管状莫来石支撑体上采用2次水热生长法合成了方沸石分子筛膜.通过气体渗透性能测试和XRD、SEM等对膜进行表征,重点考察了合成溶胶中的碱度、合成温度、晶化时间对膜层的晶体形貌和结构以及渗透性能的影响.结果表明:在n（ H2 O）: n（ Na2 O）为200的合成溶胶体系中,合成温度为150℃的条件下晶化反应6 h,可制备出结晶度好且渗透性能较高的纯相方沸石分子筛膜.室温下该膜的氢气渗透率为1.8×10-8 mol·m-2·s-1·Pa-1,H2/CO2气体分离因子为15,高于其努森扩散值（4.7）.     

雨水酸化条件对高岭土改性沥青路面腐蚀性能的试验模拟

在酸雨条件下,为提高路面抗腐蚀性能的最佳高岭土掺量,探究酸雨对高岭土改性沥青路面腐蚀性能的影响.在pH值为2.0, 4.0,5.6,7.0时,采用周期浸泡、加速腐蚀的试验方法,依次研究高岭土改性沥青混合料的变化情况.试验结果表明:不同pH值的酸雨对4种不同高岭土掺量的沥青混合料均有侵蚀作用,但掺加高岭土的马歇尔试件明显好于基质沥青试件;通过宏观实验及微观分析,当高岭土掺量为3%时,高岭土改性沥青混合料抗腐蚀性能最佳.     

Geological constraints of giant and medium-sized gas fields in Kuqa Depression

There is a gas-rich and well-charged petroleumsystem in the Kuqa Depression where Triassic and Jurassicsource rocks play important roles. Distributed in an area ofmore than 10000 km and with a thickness of up to 1000 m,they are composed of dark mudstones, carbonaceous mud-stones and coal seams containing 6%, 40% and 90% of TOC,respectively, and are mainly the humic organic matter. Ashigh-quality regional cap rocks, the Neogene and Eogenegypsum rocks and gypseous mudstones matched well withthe underlying Neogene and Cretaceous-Eogene sandstones.They have formed the most favorable reservoir-seal assem-blages in the Kuqa Depression. Also the Jurassic sandstonesand mudstones formed another favorable reservoir-seal as-semblage. The traps are shaped late in the fold-thrust belt,mainly fixed in the Tertiary-Quaternary, where ten structurestyles have been distinguished. These traps spread as a zonein N-S, are scattered like a segmental line in W-E and showtier-styled vertically. The best traps are gypsum-salt coveredfault-bend anticlines related to the passive roof duplex. Thispetroleum system is characterized by late accumulation. Inthe early Himalayan Movement, mainly gas condensate andoil accumulated and were distributed in the outer circularregion of the kitchen; whereas in the middle and late Hima-layan the gas accumulations mainly formed and were dis-tributed in the inner circular region near the kitchen. Theoverpressure of gas pools is common and is formed by sealcapacity of thick gypsum layers, extensive tectonic compres-sion and large uplift. The well-preserved anticline traps un-derlying the high-quality regional cap rocks of the Tertiarygypsum rocks and gypseous mudstones are the main targetsfor the discovery of giant and medium-sized gas fields. Aboveconclusions are important for the petroleum geology theoryand the exploration of the fold-thrust belt in foreland basinsin central and western China.     

煤系地层中高岭土矿床的主要成因类型及特征

沉积高岭土矿床,可分为煤层内高岭石夹矸和煤层间高岭土矿床二种类型。前者成分很纯、结晶很好。在煤系地层中,由于原始物质、地质构造、地形条件、水文地质等条件的具备,也发育风化矿床,它们多半为软质粘土或木节土。内蒙老石旦高岭土矿床是石炭系煤层及其夹矸的风化残余产物。甘肃安口高岭土矿床也是侏罗系煤层,夹矸及顶板泥质岩的风化残余产物。四川叙永高岭土矿床则为二迭系煤层及其底板风化淋滤的结果。由于煤层自燃,还存在高岭土经烧变而成的天然熟料,可以作为一种变质高岭土矿床。本文从具体矿床实例出发,提出了煤系地层中高岭土矿床存在的主要成因类型,在理论上,找矿和利用上,均具一定意义。     

茂名高岭土煅烧反应历程浅析

采用粉末衍射法XRD和DTG、DSC热分析法,对茂名高岭土高温煅烧反应历程进行了初步研究.DTG测得总失重率为14.41%;DSC热分析曲线显示在523.42℃和999.96℃有两个相变温度点,XRD检测证实它们分别是由原始晶相变成非晶相,然后再转变为莫来石晶相的相变点.煅烧反应主要经历了先脱除游离水后脱除结构水,即由高岭土→活性高岭土(偏高岭土)→莫来石的反应历程.     

用高岭土制备聚氯化铝铁-淀粉复合絮凝剂及性能研究

以高岭土、淀粉为原料合成聚氯化铝铁-淀粉复合絮凝剂。产品和市售PAC(以质量相同计)对废水进行处理,絮凝性能明显优于市售PAC。实验研究了酸浸高岭土的优化工艺条件,高岭土与盐酸质量比为1:3,盐酸浓度为6mol.L-1,温度为85～90℃,反应时间为4h,铝铁的浸取率分别达93%、95%。实验还研究了复合絮凝剂优化反应条件,酸浸液中铝与淀粉质量比为3.4:1,pH为1.5,温度为60℃,反应时间为6h时,产品絮凝效果佳。