Salt alginate fiber was prepared by means of wet spinning , the structure and properties of the fibers were studied by differential thermal analysis , infrared and scanning electron microscopy 摘要采用溶液纺丝的方法制备了海藻酸盐纤维，借助热分析、红外分析及扫描电子显微镜等对纤维结构与性能进行了研究。
Differential thermal analysis ( dta ) of starting powers and x - ray diffraction ( xrd ) of samples sintered at different temperatures from 600 c to 1300 c by hot pressing were utilized to analyse the phase composition 采用原位热压烧结工艺，通过差热分析和x衍射图谱，分析了600 1300不同烧结温度下烧结所得产物的相组成。
By means of some advanced measure techniques , such as differential thermal analysis ( dta ) , sweep electron mierosope ( sem ) , the mecha nism of drying , core bonding and water - solution of this core are approached 较详细地介绍了应用差热分析，电镜分析等近代测试手段，探讨制芯材料在烘干时的硬化过程，获得干强度的粘结机理以及水溶性机理的情况。
Xrd , differential thermal analysis ( dta ) , and vickers hardness measurements were carried out for these specimens . the experimenal results reveal that the hardness increases with increasing bn content and decreasing cnts content 发现：添加bn后样品硬度有不同程度的提高，并随bn含量的增加而增大；添加cnts后样品硬度有不同程度的下降，并随着cnts含量的增加而减小。
Potash micatization is one of the main hydrothermal alteration minerals genetically related to the lead - zinc - silver deposit . it usually shows as muscovitization , sericitization and illitization . this paper presents a comprehensive study on the chemical composition of potash mica , adapted the follow methods : electronic probe , differential thermal analysis , x - ray diffraction analysis . at last , the structu ral characteristics and the geological environment of potash mica forming have been discussed 系统地研究了钾质白云母化的矿物组成，采用了电子探针差热分析x射线分析等技术方法，探讨了钾质白云母的结构特征和形成的地质环境及找矿意义。
Encapsulating materials of epoxy resin are modified with hgh , nano - sio2 and organophilic montmorillonite , in the present investigation , the microstructue , some properties and influence factors about nano - sio2 and organophilic montmorillonite modified encapsulatig materials have been systematically studied using x - ray diffraction , electron microscopy and differential thermal analysis measurement techniques 随着航空、电子等事业的发展，灌封器件的高性能化对灌封材料提出了越来越高的要求。探索制备环氧灌封材料的新方法，寻求提高其使用性能的有效途径是该领域研究的重要课题。
The results show that v5 + whose valence changes is an acceptor impurity and after heat treatment especially at 655 . the phenomenon is consistent with the result of the dta ( differential thermal analysis ) . the result of dta indicates that v2o5 has a phase transformation absorption peak at 655 while the signal of esr of low valence of v ion is the strongest 结果表明v离子是一种受主杂质,热处理后,其价态产生了变化,尤其是在655热处理时价态变化程度最明显,与v2o5的差热分析( dta )结果相吻合,差热分析也显示, v2o5在655存在一相变吸热峰,此时样品的低价态v离子的esr信号最强。
The composition of sample was identified by means of x - ray diffractometer ( xrd ) . magnetic properties were measured by vibrating sample magnetometer ( vsm ) . the combustion behavior and crystallization process of the gel were studied by means of differential thermal analysis - thermogravimetric analysis ( dta - tg ) 利用x射线衍射仪( xrd )确定样品物相，振动样品磁强计( vsm )进行磁性测量，综合热分析仪研究凝胶的燃烧和析晶过程，扫描电子显微镜( sem )和透射电子显微镜( tem )观察粉末的形貌与粒度。
Super - micro - powder were observed throuth scanning electron microscope ( sem ) to find character under microscope to have been dismissed ; differrential thermal analysis ( dta ) print has been tested to distinguish rhizoma polygoni cuspidati and the root of differential thermal analysis , dta macleaya cordata ( willd . ) r . br . [ bocconia cordata willd ] among its components , such as emodin , chrysophanol , falacinol , citreorosein , questin , questinol , polydatin ( resveratrol - 3 - 0 - ? - d - glucoside ) and anthraquinone have been tested to be the main activator 针对目前市场上存在着虎杖药材质量不稳定，生产及临床实践中虎杖制剂的质量难以控制等问题，我们在对虎杖进行文献查阅、产地考察和市场调查的基础上，考察了药材产地等主要因素对虎杖质量的影响。
According to the significant improvement in properties of ions and particles doped perovskite , tb and cnt doped pt materials were prepared , and the properties studied . tb and cnt doped pt powders and films were successfully prepared by sol - gel method . by differential thermal analysis ( dta ) , scanning electron microscopy ( sem ) , transmission electron microscopy ( tem ) , x - ray diffraction ( xrd ) , fluorescent analysis and dielectric constant analysis , the morphology and phase transformation , crystalline properties , fluorescent properties and dielectric properties of the materials were studied 本研究中采用溶胶凝胶法制备了具有优良结晶性能的稀土离子tb及纳米碳管掺杂的钛酸铅( pt )超细粉末和( 100 )取向生长的薄膜，并利用差热分析、扫描电子显微镜、透射电子显微镜、 x射线衍射、荧光分析和介电常数等多种分析测试手段对掺杂后的pt薄膜及超细粉末的相结构、光学性能、结晶性能以及介电常数等进行了研究。
