2018年安溪珠塔内窑调查报告

2018年5月至7月,厦门大学历史系考古专业、福建博物院文物考古研究所及安溪县博物馆等单位联合组成\"安溪古窑址调查队\",对安溪珠塔内窑进行了全面的调查,基本了解珠塔内窑古窑址分布与保存情况,采集了一批明末清初的青花瓷器、白瓷与窑具标本,并发现部分窑炉遗迹,为研究闽南地区青花瓷窑业发展提供了第一手资料

鄂尔多斯大面积冰楔群的发现及20ka以来中国北方多年冻土南界与环境

此前,中国晚更新世晚期多年冻土南界的研究有两点不足,一是限于中国北方东段,二是年代数据不够系统.通过对中国北方晚更新世晚期冰缘现象的研究,认为中国北方高纬度多年冻土南界基本上沿38o~40oN(东段)和37o~39oN(西段)延伸,并第1次绘出分布图.同时,综合其他方面的研究成果,重建了晚更新世晚期以来纬度冻土带南界的变迁,并提出26和23~13kaBP有两次寒冷期,年均温在不同地段较今降低8~12℃

Effect of binding parameters on MPEG apparent graft density and resistance to protein adsorption on Chitosan-g-MPEG modified alginate/chitosan hydrogel microcapsules

Effect of binding parameters on MPEG apparent graft density and resistance to protein adsorption on Chitosan-g-MPEG modified alginate chitosan hydrogel microcapsule

洱海叶绿素a浓度的季节动态和空间分布

2010年5月至2011年4月,对洱海叶绿素a的季节动态、空间分布及其与环境因子的关系进行研究.结果表明,水体中叶绿素a浓度存在明显的季节变化,其变化范围为4.11～24.30μg/L,年平均值为10.4±6.5μg/L,最小值出现在2011年3月,最大值出现在2010年9月.叶绿素a浓度在夏、秋季较高,冬、春季较低.在空间变化上,叶绿素a浓度在南部湖区最大,其次是北部湖区,中部湖区最低.Pearson相关系数和主成分分析表明,洱海叶绿素a浓度在不同湖区中与水温和透明度均呈极显著相关.总氮在北部和南部湖区与叶绿素a浓度均存在一定的相关性,而总磷与叶绿素a浓度在南部湖区存在一定的相关性.根据修正的卡尔森营养状态指数,洱海综合TSI值为50.6,水质处于中营养状态

洱海叶绿素a浓度的季节动态和空间分布

2010年5月至2011年4月，对洱海叶绿素a的季节动态、空间分布及其与环境因子的关系进行研究．结果表明，水体中叶绿素a浓度存在明显的季节变化，其变化范围为4．11～24．30μg／L，年平均值为10．4±6．5μg／L，最小值出现在2011年3月，最大值出现在2010年9月．叶绿素a浓度在夏、秋季较高，冬、春季较低．在空间变化上，叶绿素a浓度在南部湖区最大，其次是北部湖区，中部湖区最低．Pearson相关系数和主成分分析表明，洱海叶绿素a浓度在不同湖区中与水温和透明度均呈极显著相关．总氮在北部和南部湖区与叶绿素a浓度均存在一定的相关性，而总磷与叶绿素a浓度在南部湖区存在一定的相关性．根据修正的卡尔森营养状态指数，洱海综合TSI值为50．6，水质处于中营养状态

芩香清解口服液对4日龄大鼠的发育毒性

目的: 系统考察芩香清解口服液(QXQJ)对4日龄(PND4)大鼠生长发育的影响.方法: 采用交叉抚育法对PND2大鼠进行数量和性别调整,随机分为溶剂对照组及QXQJ 3.45,10.35和28.05 g·kg-1组.PND4起每天ig给予QXQJ,溶剂对照组给予纯水,每天1次,连续给药18 d.给药结束后恢复观察3周.实验期间对各组大鼠一般状况、体重、生长发育、体格、骨骼、血液学和凝血等指标进行检查.结果: QXQJ连续给药18d对幼龄大鼠摄食量、生长发育、神经反射、自发行为、血液学、凝血、血液生化、免疫、生长激素和组织病理等检查指标均未见明显影响.PND5起,QXQJ 10.35和28.05 g·kg-1组幼龄大鼠出现黄棕色软便或稀便以及腹部膨大症状,这些症状于PND22基本恢复;28.05 g·kg-1组幼龄大鼠于PND7起体重、顶臀长、尾长和四肢长较溶剂对照组明显偏低(P<0.05),停药1周后恢复;28.05 g·kg-1组幼龄大鼠PND22骨比重和骨密度显著低于溶剂对照组(P<0.05),PND42时基本恢复. 结论: QXQJ可导致未断乳幼龄大鼠出现黄棕色软便或稀便及腹部膨大等消化不良症状,继而影响体格发育,停药或离乳后基本恢复;QXQJ对PND4大鼠连续给药18d发育毒性的无不良反应剂量(NOAEL)为3.45 g·kg-1. OBJECTIVE: To investigate the effects of Qinxiang Qingjie oral liquid (QXQJ) on growth and development after repeated administration of 18 d to postnatal day 4 (PND4) rats. METHODS: The number and sex of PND2 pups were adjusted using the cross-breeding method. These pups were randomly divided into the normal control, QXQJ 3.45, 10.35 and 28.05 g«kg~1 groups. PND4, juvenile rats were ig given QXQJ every day, while the normal control group was given pure water, once a day, for 18 d, before observation of 3 weeks was resumed. During the experiment, the general condition, body mass, growth and development, physique, bone, hematology and coagulation of the rats in each group were detected. RESULTS: 18 d after continuous administration of QXQJ, there was no obvious effect on the food intake, growth and development, nerve reflex, spontaneous behavior, hematology, coagulation, blood biochemistry, immunity, growth hormone, histopathology and other examination indexes of juvenile rats. From PND5, juvenile rats in the QXQJ 10.35 and 28.05 g-kg"1 groups developed yellow-brown soft or loose stools and abdominal distention, but the symptoms generally recovered at PND22. The body mass, top-rump length, tail length and limb length of the juvenile rats in the 28.05 g∗kg"1 group were signifi- cantly lower at PND7 (P<0.05), but recovered one week after drug withdrawal. The bone mineral specific gravity and bone mineral density of the 28.05 g • kg"1 group were significantly lower than those of the normal control group at PND22 (P<0.05), but there was no significant difference at PND42. CONCLUSION: QXQJ can cause such indigestion symptoms as yellow brown soft stool or loose stool and abdominal enlargement in unweaned juvenile rats, thus affecting the physical development indicators of rats, but the symptoms can recover after withdrawal of medication or withdrawal from milk. The no observed adverse effect level (NOAEL) of QXQJ administered to 4-day-old rats for 18 d is 3.45 g-kg"1