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Sesquiterpene Esters from Salvia roborowskii

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Chinese Chemical Letters 2003年第11期14卷 1156-1158页

作者： Ya LI ning lou Yan Qi WU Xian Feng LIN Yu LI National Laboratory of Applied Organic Chemistry Lanzhou UniversityLanzhou 730000

Two new sesquiterpene esters, 3b, 6b, 8a-triacetyl-4b, 5a-epoxy -1- oxogermacr- 10(14)-ene (1) and 3b, 6b, 8a-triacetyl-4b, 5a-epoxygermacr-1(10)-ene (2) were isolated from the whole plant of Salvia roborowskii Maxim.... 详细信息

关键词： Salvia roborowskii Labiatae sesquiterpene germacrane.

Selectivity recovery of molybdenum(VI) from rhenium(VII) by amine-modified persimmon waste

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Rare Metals 2016年第6期35卷 502-508页

作者： Zhen-ning lou Ye-Xia Li Fu-Qiang Ren Qing Zhang Li Wan Zhi-Qiang Xing Shu-Liang Zang Ying Xiong College of Chemistry Liaoning University

Amine functional group was grafted to obtain modified persimmon waste gel （NH2-CPT） with the focus of development of selective recovery of molybdenum from rhenium. The adsorption behavior of the NH2-CPT gel for various metal ions at varying hydrochloric acid concen-trations was studied. It is found that the NH2-CPT exhibits high affinity for Mo（VI） and no affinity for Re（VII）, Cu（II）, Fe（III）, Mn（VII）, and Zn（II） under the operating conditions. The maximum adsorption capacity for Mo（VI） is 172 mg·g^-1, and the adsorption behavior obeys the Langmuir model. Owing to Mo（VI） as poly-anions, the adsorption mechanism of molybdenum anions could be explained as the anion exchange reactions at weak acid concentration, while neutral molecules could be explained as the complexation reactions at strong acid concentration, respectively. In addition, its excellent adsorption characteristics for Mo（VI） are confirmed by separation of Mo（VI） from Mo to Re containing industrial effluent.

关键词： Persimmon Molybdenum Rhenium waste Adsorption Biomass Separation

基于时空数据挖掘技术的华东区域暴雨时空特征

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应用生态学报 2017年第12期28卷 4043-4050页

作者：娄宁西安科技大学测绘科学与技术学院西安710054

基于TRMM 3B42降雨数据,构建5个年尺度的时间序列参数,结合数据挖掘和GIS空间分析技术,分析2003—2015年中国华东区域暴雨时空特征.结果表明:2003—2015年,研究区年降水量与年暴雨降水量空间分布较为相似,年降水总量呈略微上升的趋势,... 详细信息

基于TRMM 3B42降雨数据,构建5个年尺度的时间序列参数,结合数据挖掘和GIS空间分析技术,分析2003—2015年中国华东区域暴雨时空特征.结果表明:2003—2015年,研究区年降水量与年暴雨降水量空间分布较为相似,年降水总量呈略微上升的趋势,年暴雨降水比例的时间波动较显著;暴雨降水空间分布在南北方向的差异性明显强于东西方向;年暴雨频次的时间波动较小但空间差异显著;年暴雨降水呈现向北偏移的趋势;5个变量的变化趋势均表现出较强的空间差异性,且大部分像元呈不显著的增加(或减少)趋势.

关键词： TRMM 3B42 暴雨时空数据挖掘 Mann-Kendall检验时空特征

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基于光刀图像的机器人示教纠偏方法

计算机集成制造系统 2021年第3期27卷 683-691页

作者：娄宁习俊通上海交通大学智能制造与信息工程研究所上海200240

为了解决机器人辅助在线检测系统示教过程中效率低、人为干预多的问题,针对孔类特征,提出一种通过处理光刀图像获取机器人位姿纠正参数的方法。在该方法中,纠偏过程按照将图像光刀线调整为水平方向、将被测特征调整至图像中央、根据不... 详细信息

为了解决机器人辅助在线检测系统示教过程中效率低、人为干预多的问题,针对孔类特征,提出一种通过处理光刀图像获取机器人位姿纠正参数的方法。在该方法中,纠偏过程按照将图像光刀线调整为水平方向、将被测特征调整至图像中央、根据不同特征调整最优扫描方向3个步骤进行。根据光刀图像可以求出测量坐标系与被测特征的位姿关系,并得到该位姿与理想测量位姿的偏差。经过坐标变换即可得到在机器人基坐标系下的调整参数。另外,可利用电脑控制机器人运动,从而实现了纠偏过程的自动化。实验结果表明,该方法可将初始的示教位姿修正为理想位姿,且比传统方式效率更高。

关键词：在线检测光刀图像机器人示教示教纠偏

Removal and recovery of titanium(Ⅳ) from leach liquor of high-sulfur bauxite using calcium alginate microspheres impregnated with di-(2-ethylhexyl) phosphoric acid

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Transactions of Nonferrous Metals Society of China 2019年第2期29卷 397-406页

作者： Zhen-ning lou Xin XIAO Ying XIONG Yu-chun ZHAI School of Metallurgy Northeastern UniversityShenyang 110819China College of Chemistry Liaoning UniversityShenyang 110036China

In the leaching solution of high-sulfur bauxite roasted by sulfuric acid,a high concentration of aluminum presented along with titanium and *** present work was to remove Ti(IV)from the leach liquor by calcium alginate microsphere sorbent material(CA-P204)based on natural alginate impregnated with di-(2-ethylhexyl)phosphoric acid(D2EHPA)to purify leaching *** exchange and chelation make major contributions to the adsorption mechanism according to Fourier-transform infrared spectroscopy and X-ray photoelectron spectroscopy *** results showed that Ti(IV)was successfully removed by the CA-P204 adsorbent from the Ti(IV)-Al(III)-Fe(III)ternary system with a dynamic column *** removal rate of titanium was nearly 95%under optimal conditions and the maximum adsorption capacity was 66.79 mg/g at pH *** of CA-P204 was evaluated over three consecutive adsorption/desorption *** adsorption process was simple,low-cost,and had no waste discharge,suggesting that the CA-P204 was promising,efficient,and economical for removing Ti(IV)from high-sulfur bauxite leaching solution.

关键词： titanium(IV) D2EHPA calcium alginate microsphere high-sulfur bauxite

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艺术地形图及其编制方法探讨

测绘通报 2014年第11期 78-80页

作者：娄宁西安科技大学测绘学院陕西西安710054

传统地形图专业化太强、抽象程度高,适用范围小,已成为地理信息技术广泛应用的障碍。为此,本文提出并研究了艺术地形图的概念和编制方法,探讨了通过细化和美化编制艺术化地形图的方法,并以制作大比例尺艺术地形图为例进行了试验说明。... 详细信息

传统地形图专业化太强、抽象程度高,适用范围小,已成为地理信息技术广泛应用的障碍。为此,本文提出并研究了艺术地形图的概念和编制方法,探讨了通过细化和美化编制艺术化地形图的方法,并以制作大比例尺艺术地形图为例进行了试验说明。结果证明,艺术地形图既保持了普通地形图的精度,又具有效果图的艺术性;它不仅形象美观,而且信息更丰富,具有更好的实用性,在智慧城市建设中可发挥独特的作用,可有力地推动地理信息技术的广泛应用。

关键词：地形图艺术地形图地图符号地图编制

Effect of Coriolus Versicolor Polysaccharide-B on the Biological Characteristics of Human Esophageal Carcinoma Cell Line Eca109

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Clinical oncology and cancer researeh 2012年第3期9卷 164-167页

作者： Dao-feng Wang ning lou Xiao-dong Li State Key Laboratory of Oncology in South China Cancer Center of Sun Yat-sen University Department of ICU Cancer Center of Sun Yat-sen University Department of Thoracic Surgery Cancer Center of Sun Yat-sen University

Objective To investigate the effect of Coriolus versicolor polysaccharide-B （CVPs-B） on the biological characteristics of human esophageal carcinoma cell line Ecal09 in vitro. Methods The cells of experimental group （EG） were cultured in DMEM with 10% FCS and 150μg/mL CVPs-B, the cells of control group （CG） were cultured in DMEM with 10% FCS without CVPs-B. MTT reduction assay was performed to detect the effect of CVPs-B on the proliferation of Ecal09 cells after the compound was administrated in varying concentrations. The living conditions of the Ecal09 cells were determined using trypan blue exclusion. Then, cell growth curves were drawn. Flow cytometry was performed to detect the effect of CVPs-B on the apoptosis and cell cycle of Ecal09. Results In comparison with the CG, a marked decrease in the proliferation of Eca09 cells was observed in the EG, after incubation with CVPs-B. The survival rate of Eca09 cells decreased as the time of CVPs-B incubation prolonged. Comparing the cell cycles and apoptotic rates between the two groups, the proportions of cells in the G0/G1, S, and G2/M phases in the EG were found to be （68.4±3.7）%, （13.9±2.1）%, and （17.7±1.4）%, respectively, after 24 h incubation with CVPs-B. The cells had an apoptotic rate of （9.7±0.7）%. On the other hand, the proportions of the G0/G1, S, and G2/M cells of the CG were found to be （53.9±3.6）%, （26.6±2.8）%, and （19.5±2.3）%, respectively, with an apoptotic rate of （5.7±1.4）%. In comparison with the CG cells, significant cell growth in the G0/G1 phase was observed in the EG （P〈0.05）. Furthermore, a significant decrease in the number of cells in the S phase was observed （P〈0.05） in the EG. Conclusions CVPs-B can inhibit proliferation and enhance apoptosis of Ecal09 cells and may be useful in the treatment of esophageal carcinoma.

关键词： esophageal carcinoma CVPs-B proliferation apoptosis

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遥感技术在煤矿区中的运用探讨

煤炭技术 2013年第7期32卷 226-228页

作者：娄宁西安科技大学西安710054

当前地质灾害的日益严重要求采用当代高新技术开展调查工作,而随着技术的发展,GPS-遥感测量技术都有了快速发展,可靠性越来越强。为了对比两者的特点,文章主要通过理论与案例论述GPS-遥感在实际矿区测量中交叉应用的优点。

关键词：遥感技术 GPS-遥感测量煤矿区

Phenolic compounds from Anaphalis aureo-punctata

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有机化学 2003年第Z1期23卷 442-442页

作者： WU Yan-Qi lou ning LI Yu State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000

　　From the ethanolic extract of the whole plant of Anaphalis aureo-punctata, a new acylated flavonoid glycoside 3-O-kaempferol-3-O-acetyl-6-O-(p-coumaroyl)-β-D-glucopyranoside (1), and five known phenolic compounds 3-O-kaempferol-6- O- ( p-coumaroyl )-β-D-glucopyranoside ( 2 ), kaempferol-3- O-β-D-glucopyranoside 3,6-(4′-hydroxystyryl)-4-methoxy-2-pyrone (4), 2H-pyran-2-one, 6-[ 2-( 4-(β-D-glucopyranosyloxy ) phenyl ) ethenyl ]-4-methoxy-( E ) (5) and 4-hydroxy-3-methoxycinnamic hexacosyl ester (6) were isolated. Their structures were established by spectral methods (UV, IR, MS, 1D, 2D-NMR). The flavonoid glycosides, 1, 2 and 3 showed markedly inhibited oxidative DNA strand breaks induced by Fenton reaction and NADH/PMS in a concentration-dependent manner.……

关键词： flavonoid glycosides phenolic compounds spectral methods Fenton reaction