超细W-10Cu复合粉末的湿法制备及烧结体性能

通过湿法以仲钨酸铵和硝酸铜为原料制备了Cu的质量分数为10%、平均粒径约为250 nm的超细W-Cu复合粉末.用扫描电子显微镜(SEM)和元素分析,结果表明:还原温度对粉末的形态和纯度具有显著作用.粉末经注射成型后制成的生坯在1300℃下、H2气氛中烧结120 min后,其相对密度可达99.37%,微观组织均匀,具有较高的热导率,可达217 W/(m·K)左右,室温到600℃范围下热膨胀系数在6.0×10-6～7.8×10-6K-1之间

Iodine Study of Marine Sediments from Four Sea Areas

分大洋、边缘海、海湾和潮间带四种海区,测定了采集自东太平洋、东海、山东胶州湾的海洋沉积物岩心和采集自福建兴化湾、九龙江河口、东山湾3个海湾潮间带沉积物岩芯的碘含量,研究了岩芯中碘的分布特征,探讨了碘与有机物的相关关系。结果给出:东太平洋岩芯碘含量为68.2~105.6 Mg/kg,东海岩芯碘含量为35.2~77.8 Mg/kg,胶州湾海洋和周边陆地沉积物碘含量分别为51.6~94.3和36.5~50.3 Mg/kg,福建兴化湾、九龙江河口和东山湾3个海湾潮间带沉积物岩芯的碘含量分别为2.5~43.7、17.3~39.6和11.3~29.1 Mg/kg。不同海区沉积物的碘含量水平从高到低依次为:东太平洋>胶州湾>东海>胶州湾周边陆地沉积物>福建3个海湾潮间带沉积物。东太平洋沉积物岩芯,以及兴化湾和东山湾潮间带岩芯碘与有机碳含量呈正相关关系,其余海区沉积物中的碘与有机碳的含量相关性不明显。For four kinds of sea areas,the iodine in sediment cores were measured,the cores are marine sediment cores collected from East Pacific,East China Sea and Jiaozhou Bay,and intertidal sediment cores from Xinhua Bay,Jiulongjiang Estuary and Dongshan Bay of Fujian Province,China.The iodine distribution features in sediment cores were studied and the correlations between iodine and organic carbon in the sediments were evaluated.The results gave that the iodine contents vary from 68.2-105.6 mg/kg in the core from East Pacific and they are between 35.2-77.8 mg/kg in the core from East Chins Sea.The iodine contents are in the range of 51.6-94.3mg/kg and 36.5-50.3 mg/kg for the marine sediments of Jiaozhou Bay and sediment from the land surrounding Jiaozhou Bay respectively.They are 2.5-43.7 mg/kg,17.3-39.6 mg/kg,and 11.3-29.1 mg/kg for the intertidal sediment cores from Xinhua Bay,Jiulongjiang Estuary and Dongshan Bay respectively.Sequentially,from high to low level of iodine content is East Pacific > Jiaozhou Bay > East China Sea > marine sediment of Jiaozhou Bay >land sediment surrounding Jiaozhou Bay > intertidal sediments from three bays of Fujian Province.The correlations between iodine and organic carbon content in the sediment from East Pacific,Xinhua Bay and Dongshan Bay are well close,in contrast with that,they are not found for the sediments from other sea areas.国家自然科学基金项目“应用I-129的海洋铁锰结壳年代学”(编号:41073044)资

Study on mutation breeding of banana buds in vitro Ⅳ: Bio-chemical analysis to 'Zhangjiao No. 8' strain

本文用60COγ射线对“台湾北蕉”(Musa AAA Group Cavendish)辐照诱变选育的“漳蕉8号”株系抗损伤相关酶的生化指标和过氧化物酶同工酶进行分析,结果表明,“漳蕉8号”株系对60COγ射线造成的损伤已完成修复,其优良性状可稳定遗传。Treated with irradiation of 60Coγ ray, a new strain 'Zhangjiao No.8' was developed from 'Musa AAA Group Cavendish'. The bio-chemical indexes corresponding to anti-injury and POD isoenzyme of 'Zhangjiao No.8' were analyzed. The results showed that 'Zhangjiao No.8' strain had recovered from the irradiation injury and the excellent traits could be inherited stably.漳州市科技计划项目(Z9315

牛黄解毒丸主药改变后的镇痛作用研究

牛黄解毒丸(简称 NJDW)和鸡胆粉复方制剂(简称 JJDW)对由热刺激,电刺激、醋酸所致小鼠疼痛均有显著的抑制作用。二者对由热刺激、电刺激引起小鼠疼痛的抑制强度无显著差异,但对由醋酸所致小鼠疼痛的抑制强度存在显著的差异,JJDW 的镇痛作用强于 NJDW

中国南方地区亨廷顿患者不同运动分型的临床特征

目的探讨中国南方地区亨廷顿病患者不同运动分型的临床特征，便于个体化精准治疗。方法纳入自2014年3月至2021年5月在中国亨廷顿病协作网广州中心登记的亨廷顿病患者58例，利用亨廷顿舞蹈症整体评估量表对患者进行运动分型，精神状态、认知功能以及全面生活能力测试，最后利用Kruskal-Wallis H检验方法对不同分型患者各组临床特征进行分析。结果中国南方地区亨廷顿患者运动分型以混合型为主，共42例，占比72.41%。不同分型临床特征不同，运动机能减退-僵硬为主型患者全面生活能力低于舞蹈症状为主型患者［8.00（4.00～11.00）vs 13.00（11.00～ 13.00）；P=0.037］。结论中国南方地区亨廷顿患者运动症状复杂。精准的运动分型，对药物治疗与预后评估有一定的意义

书法心理治疗对震后210名小学生创伤后应激反应的心理干预

发掘文化资源中的灾后心理干预方法,验证具有中国文化特征书法治疗的有效性.方法 采用香港大学高尚仁教授创立的书法治疗方法对德阳地区2所小学的80名四、五年级有明显创伤后应激反应的小学生进行对照实验.实验组41名学生,对照组39名学生.研究在地震后1年进行.实验组每天进行书法练习,每次完成5页的定量训练;对照组正常上课,实验为期30天.以事件冲击量表(儿童版CRIES-13)问卷、唾液皮质醇分别作为筛选和干预效果指标.结果 干预结束后,实验组唾液皮质醇和CRIES阳性指标显著下降,对照组差异不显著.结论 书法治疗能有效缓解创伤后应激反应,是一项值得推广的心理干预方法