Study on microwave-assisted extraction of coal

The effect of different factors on coal extraction yield-temperature, solvent, coal type and irradiation time were investigated for different China coals under microwave-assisted extraction（MAE）. The results show that the optimum temperature for ethanol, acetone and THF are 393,373 and 373 K respectively and the extraction yield of THF is higher than that of other two solvents under MAE. Extraction with several single organic solvents were conducted for the 5 typical China coals-Shenfu, Tongchuan, Panzhihua, Yitai and Huating coal under microwave-assisted extraction and Soxhlet extraction. Results indicat that extraction yield of ethylenediamine, ethanol, acetone, tetrahydrofuran under MAE are all higher than that of Soxhlet extraction and MAE required less time. Tongchuan coal extracts of ethanol and acetone which were extracted by MAE and Soxhlet extraction were analyzed by GC/MS.     

MCM-41介孔分子筛和纳米TiO2/MCM-41的合成与结构表征

以工业水玻璃为硅源,表面活性剂十六烷基三甲基溴化铵为结构模板剂,利用室温晶化法合成出MCM-41介孔分子筛,并以钛酸丁酯为前驱体,通过溶胶凝胶法及液相沉积法对介孔分子筛MCM-41进行纳米TiO2的组装。运用XRD、FT-IR、N2吸附-脱附等表征手段对其结构特征和氧化钛分散状态进行了研究,结果表明：TiO2与MCM-41端基硅氧键反应形成Ti-O-Si键;纳米TiO2不仅进入孔道,较均匀地修饰了介孔分子筛MCM-41的孔壁,而且使介孔分子筛MCM-41仍保持有序的孔道结构。     

注重地理区位关系的城市设计--以德清县城城东新区为例

在认真分析德清县城地理区位的基础上，深入研究周边城市对德清的带动作用，并立足于地方特有的资源条件，设计了面向杭州与长三角地区的特色城区。     

纳米沸石的合成及其影响因素

纳米沸石的合成通常以水热法为主,此外尚有模板法、气固相法和微波加热法等不同方法合成的范例。低聚合度硅源、较高的碱度、较低的固液比和硅铝比、较低的晶化温度、合适的添加剂类型以及较高的添加剂用量有助于纳米沸石的形成;无钠碱源形成分立的纳米沸石胶体,有钠碱源形成聚集态纳米沸石。     

重症颅脑外伤应用纳洛酮的临床观察

目的探讨纳洛酮在重症颅脑外伤中的应用效果及其机制。方法选择GCS评分为3~8分重症颅脑外伤患者38例作为治疗组在常规治疗基础上加用纳洛酮治疗,另以相同情况的重症颅脑外伤39例作为对照组给予常规治疗。观察意识变化、生命体征、远期疗效。结果治疗组意识改善及远期恢复良好率明显高于对照组,呼吸机者使用时间及住院时间缩短,重残及死亡率明显减少（P〈0.05）。2组比较差异有统计学意义。结论纳洛酮能有效促醒、明显降低重症颅脑外伤患者的死亡率、改善预后等。     

RESEARCH THE CHANGE RULE OF OXIDATION ZONE WIDTH CAUSED BY NITROGEN INJECTION IN GOB

On the basis of heat-transfer and chemical kinetics theory, both connections coal selfignite with oxygen concentration and range of oxidation zone with air-leak intensity are analyzed,and calculating method is deduced to gain the lower limit of oxygen concentration and the range of oxidation zofie. The change rule of correlative parameter is quantitatively researched between before nitrogen injection and after nitrogen injection in gob, such as oxygen concentration, oxidation zone width, etc. According to theoretical calculation, the relation position and flow of nitrogen injection with oxidation zone width is conformed, and computational formulas of the best flow and position of nitrogen injection are obtained. It offers a theoretic criterion for preventing and controlling float coal self-ignite by nitrogen injection in gob.