两种以Znq2为基体的新型电致发光材料的合成与性能

以8-羟基喹啉为配体的金属配合物是一种性能优良的有机电致发光材料,其中有关8-羟基喹啉铝(Alq₃)研究已有大量报道,8-羟基喹啉锌(Znq₂)研究还有待发展。介绍了两种以Znq₂为基体的新型有机电致发光材料Znq₂(H₂O)₂和(Znq₂)₄的合成方法。用IR、XRD、TG、DTA和荧光测试方法进行表征与分析表明:Znq₂(H₂O)₂和(Znq₂)₄的玻璃化温度(T_g)分别为104.2℃和204.9℃;在161℃下Znq₂(H₂O)₂脱去水分子成为Znq₂,在361℃高温下四聚体(Znq₂)₄裂解为单体Znq₂;Znq₂(H₂O)₂和(Znq₂)₄具有很好的发光性能,在光致发光谱中λ_max分别是505,550nm。     

关于三次素变数方程在算术数列中的解

In this paper, we give a necessary and sufficient solvable condition for diagonal cubic equation with prime variable in arithmetic progressions and the outline of the proof.     

Numerical Study on Left-Handed Materials Made of Ferrite and Metallic Wires

Due to coupling effect, we show that it is difficult to realize the left-handed material by placing metallic wires directly into a ferrite matrix. However by introducing an insulating material round the metallic wires to decouple the direct interaction between the metallic wire and ferrite matrix, we have proposed two microstructures, which are shown by numerical simulation to have negative refractive indexes. The influence of microstructure on the transmission property is also examined.     

Studies on the Intramolecular Inclusion Complexes of Functionalized Calixarenes with CH_3X (X=CN, NO_2)

ＩｎｔｒｏｄｕｃｔｉｏｎＯｎｅｏｆｔｈｅｍｏｓｔａｔｔｒａｃｔｉｖｅｆｅａｔｕｒｅｓｏｆｃａｌｉｘ[4]ａｒｅｎｅｓｉｓｔｈｅｉｒｃｕｐｌｉｋｅｓｔｒｕｃｔｕｒｅ ,ｗｈｉｃｈｗａｓｏｂｓｅｒｖｅｄｂｏｔｈｉｎｓｏｌ ｉｄｓｔａｔｅａｎｄｉｎｓｏｌｕｔｉｏｎ .Ｔｈｅｃａｖｉｔｙｄｅｆｉｎｅｄｂｙｔｈｅｃｏｎｅｃｏｎｆｏｒｍｅｒｏｆｔｈｉｓｍａｃｒｏｃｙｃｌｅｗａｓｅｘｔｅｎｓｉｖｅｌｙｅｍｐｌｏｙｅｄａｓａｂｉｎｄｉｎｇｓｉｔｅｆｏｒｔｈｅｒｅｃｏｇｎｉｔｉｏｎｏｆｎｅｕｔｒａｌｇｕｅｓｔｓｈａｖｉｎ…     

Graves甲亢合并周期性麻痹的131I疗效分析

目的了解Graves甲亢合并周期性麻痹的发病机制及131I对其治疗价值.方法对34例Graves甲亢合并周期性麻痹的患者均采用131I治疗.结果34例患者经予131I治疗后,其中有8例治疗无效于6月后进行了2次131I治疗.6个月治愈率76.47%%(26/34),12个月治愈率97.06%(33/34),总的有效率为100%;其中早发甲低者3例,发生率8.82%,予替代治疗后均获好转;晚发甲低者4例,发生率11.76%.结论131I对Graves甲亢合并周期性麻痹的疗效肯定,使用安全,疗程短,应考虑作为首选治疗.     

橙皮素A的NMR研究

橙皮素A是从中药北沙参(Glehnia littoralis Fr. Schmidt ex Miquel)的正丁醇萃 取物中分离得到的一种8-O-4′-型异木脂素苷类化合物. 通过化学方法和波谱分析鉴 定了该 化合物的结构. 采用2D NMR技术对其NMR信号进行了全归属. DMSO-d₆代替CD₃OD作为溶剂，并利用重水交换，能准确读出偶合常数J_7,8值.      

3-Dimensional Body Measurement Technology

3 - dimensional body measurement technology, the basis of developing high technology in industry, accelerates digital development of aplparel industry. This paper briefly introduces the history of 3 - dimensional body measurement technology, and recounts the principle and primary structure of some types of 3 - dimensional automatic body measurement system. With this understanding, it discusses prospect of 3 - dimensional CAD and virtual technology used in apparel industry.     

Post-treatments of Super Absorbent Polymer

ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｏｕｒｄａｉｌｙｌｉｆｅ ,ｃｏｔｔｏｎ ,ｐａｐｅｒａｎｄｓｐｏｎｇｅａｒｅｃｏｍｍｏｎｌｙｕｓｅｄｔｏａｂｓｏｒｂｗａｔｅｒ.Ｔｈｅｓｅｍａｔｅｒｉａｌｓａｂｓｏｒｂｏｎｌｙａｆｅｗｔｉｍｅｓｔｈｅｉｒｗｅｉｇｈｔｏｆｗａｔｅｒａｎｄｈａｖｅｒａｔｈｅｒｐｏｏｒｐｒｏｐｅｒｔｉｅｓｗｉｔｈｒｅｓｐｅｃｔｔｏｗａｔｅｒｒｅｔｅｎｔｉｏｎ .Ｈｏｗｅｖｅｒ,ｓｏｍｅｔｙｐｅｓｏｆｐｏｌｙｍｅｒｓａｎｄｃｏｐｏｌｙ ｍｅｒｓｄｏｆｕｎｃｔｉｏｎａｓｈｉｇｈｗａｔｅｒａｂｓｏｒｂ…     

关于数理逻辑在解决数学命题中的探讨

在解决、论证数学命题过程中 ,准确使用逻辑思维方法 ,可使具体解题步骤严谨周密 ,条理清晰 ,形成完整的推理体系     

B值鞅型序列的一些极限定理

本文讨论了一些B值鞅型序列的强大数定律 ,弱大数定律 ,Lr收敛性及完全收敛性 ,推广了许多熟知的结果 .