胃肠道激光内镜应用技术

本文结合作者的体验和文献，详细介绍了激光光导纤维检查与准备，激光内镜在胃肠道疾病应用的技巧、方法和注意事项等，可为临床医生和相关技术人员提供帮助。     

Fabrication of High Performance PET/TLCP Fibers through the Synergistic Interfacial Enhancement and Compatibilization of Functional 1D and 2D Carbon Nanomaterials

The maleic anhydride functionalized graphene oxide (GO-MA) is fabricated by an efficient and solvent-free Diels–Alder reaction. Polyethylene terephthalate (PET)/thermotropic liquid crystal polyester (TLCP), PET/TLCP/GO-MA, PET/TLCP/aminated multi-walled carbon nanotubes (MWCNTs-NH₂), and PET/TLCP/GO-MA/MWCNTs-NH₂ composite fibers are systematically melt-spun. The structure and compatibilizing effects of GO-MA and MWCNTs-NH₂ on the mechanical, thermal, and crystallization properties of the composite fibers are indicated. The non-isothermal crystallization kinetics and X-ray diffraction (XRD) data show that TLCP and nanofillers can change the crystalline morphology of PET. The mechanical properties of the fibers rise with increasing TLCP content. The tensile strength 929 MPa and modulus 17.5 GPa of the fibers with 7 wt% TLCP and 0.25 wt% nanofillers (0.1 wt% GO-MA and 0.15 wt% MWCNTs-NH₂) are significantly higher than those with 7 wt% TLCP (tensile strength 622 MPa and modulus 16.1 GPa) and even higher than those with 15% TLCP (tensile strength 836 MPa, and modulus 18.0 GPa). When the GO-MA and MWCNTs-NH₂ co-exist, the anti-dripping phenomenon is improved. Therefore, the TLCP, GO, and MWCNTs synergistically strengthens the mechanical properties. This is promising for the industrial fabrication of high-strength fibers.     

远红外丙纶的性能研究

系统测试了采用共混纺丝法研制出的远红外丙纶及织物的物理机械性能、远红外发射性能、保温性能、耐洗涤性能和抗菌性能，并对用远红外丙纶加工的护腿的医疗保健作用进行了临床检测。进而讨论了远红外丙纶及织物的医疗保健作用机理。     

包裹法国红色料在陶瓷领域应用的探索

探索包裹法国红色料在建筑陶瓷工业釉料、坯体中应用的工艺技术条件，采用正交实验方法找出包裹法国红色料在陶瓷釉料、外墙砖、地砖中的最佳发色条件：在釉料中一价的钾、钠离子特别利于该色料的发色；二价离子钡较好、钙次之、镁最差；法国红色料在普通熔块中发色不理想，在特制的熔块中发色良好。     

短肢剪力墙结构扭转效应有限元分析

利用ANSYS有限元分析软件,建立三层短肢剪力墙空间结构有限元模型,通过改变控制参数和受力条件,研究轴压比、荷载偏心距和节点区箍筋配筋率对短肢剪力墙结构抗扭承载能力的影响,并将计算结果与一个结构模型试验结果进行对比。计算结果表明:当轴压比小于等于0.5时,短肢剪力墙结构抗扭承载能力随轴压比增加而增大,当轴压比超过0.5以后,结构抗扭承载能力随轴压比增加而降低;荷载偏心距增大,扭转效应加强,结构承载能力降低,扭矩增加加速了连梁端部受拉破坏,外边缘结构的连梁端部受到弯剪扭复合作用,是结构抗震的薄弱位置,建议加强配筋;适当增加节点区水平箍筋配筋率能有效提高结构抗扭承载能力。     

<Emphasis Type="Italic">Ab initio</Emphasis> study of doping mechanisms in BaTiO<Subscript>3</Subscript>-BiYO<Subscript>3</Subscript>

A density functional plane-wave pseudopotential method is used to study the doping mechanisms of impurity defects(Bi_Ba, Y_Ti) in BaTiO₃-BiYO₃. Single Bi_Ba and Y_Ti impurities have little structure distortion. Bi forms ionic bond with nearby O atom in single Bi impurity, Y formed [YO₆] octahedral in single Y impurity. However, in the co-doped Bi_Ba and Y_Ti structure, Bi formed three valence bonds with nearby O atom, which causes the large structure distortion. The doped ion makes the mobile of Ti⁴⁺ difficult and loss local ferroelectricity, which will broaden the dielectric constant temperature curve and increase the temperature stability of BaTiO₃ ceramic matrix.     

谐波导致风电机组停机问题及解决方案

针对黄源风电场由谐波引起的风电机组多次脱网停机事件,通过调查、现场测试、仿真分析等方式,查明了事件发生的确切原因,提出了风机滤波回路改造和电能质量治理的解决方案,取得了实效.     

Preparation of ultrafine Sb_2O_5 composite powder

ＰＲＥＰＡＲＡＴＩＯＮＯＦＵＬＴＲＡＦＩＮＥＳｂ＿２Ｏ＿３－Ｓｂ＿２Ｏ＿５ＣＯＭＰＯＳＩＴＥＰＯＷＤＥＲＤｕａｎ，Ｘｕｅｃｈｅｎ；Ｚｈａｏ，Ｔｉａｎｃｏｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＮｏｎｆｅｒｅｒｒｏｕｓＭｅｔａｌｌｕｒｇｙ．ＣｅｎｔｒａｌＳｏｕｔ...     

湿法锑白的晶型转变

研究了湿法锑白的白度和光敏性。通过真空干燥试验研究，对样品进次了Ｘ射线衍射定量分析，首次发现真空干燥可以使湿法锑白发生晶型转变，由斜方晶体转变为立方晶体。在适宜条件下，其转变率可达９９．６％。转变为立方晶的锑白白度高且见光稳定，光敏性消失。