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| 1 | Evodiamine improves congnitive abilities in SAMP8 and APPswe/PS1△E9 transgenic mouse models of Alzheimer's disease显示文摘 | Shu-min YUAN Kai GAO Dong-mei WANG Xiong-zhi QUAN Jiang-ning LIU Chun-mei MA Chuan QIN Lian-feng ZHANG | 2011 | Acta Pharmacologica Sinica2011,32,3: | 19 |
| 2 | Impact of Heat Wave in 2005 on Mortality in Guangzhou, China显示文摘Objective To assess the impact of the heat wave in 2005 on mortality among the residents in Guangzhou and to identify susceptible subpopulations in Guangzhou, China. Methods The data of daily number of deaths and meteorological measures from 2003 to 2006 in Guangzhou were used in this study. Heat wave was defined as ≥7 consecutive days with daily maximum temperature above 35.0 ℃ and daily mean temperature above the 97th percentile during the study period. The excess deaths and rate ratio (RR) of mortality in the case period compared with the reference period in the same summer were calculated. Results During the study period, only one heat wave in 2005 was identified and the total number of excess deaths was 145 with an average of 12 deaths per day. The effect of the heat wave on non-accidental mortality (RR=1.23, 95% CI: 1.11-1.37) was found with statistically significant difference. Also, greater effects were observed for cardiovascular mortality (RR=1.34, 95% CI: 1.13-1.59) and respiratory mortality (RR=1.31, 95% CI: 1.02-1.69). Females, the elderly and people with lower socioeconomic status were at significantly higher risk of heat wave-associatedmortality. Conclusion The 2005 heat wave had a substantial impact on mortality among the residents in Guangzhou, particularly among some susceptible subpopulations. The findings from the present study may provide scientific evidences to develop relevant public health policies and prevention measures aimed at reduction of preventable mortality from heat waves. | YANG Jun LIU Hua Zhang OU Chun Quan LIN Guo Zhen DING Yan ZHOU Qin SHEN Ji Chuan CHEN Ping Yan | 2013 | Biomedical and Environmental Sciences2013,26,8: | 16 |
| 3 | Phosphorus Status and Risk of Phosphate Leaching Loss From Vegetable Soils of Different Planting Years in Suburbs of Changsha, China显示文摘The aim of the study was to develop an index to assess the environmental risk of P loss potential in vegetable soils with chronic difference of plantation in the suburbs of Changsha, Hunan Province, China. Chemical methodology was used to study soil phosphorus status and the relationships between available P in soil and potential soil leaching P. The results showed that there was a significant linear relationship between Olsen P and CaCl2-P or P concentration in soil solution. Olsen P increased sharply when either CaCl2-P or P concentration in soil solution reached a certain level. It was confirmed that 80 mg kg-1 of Olsen P was the critical value of soil P leaching in the vegetable soils. P leaching probability over the critical was assessed by GIS and indicator Kriging and four secondary risks of phosphorus leaching loss were defined. In the area with vegetable cropping for over 30 yr (Chenjiadu) and 10-15 planting years (Huangxingzhen), the indices of phosphorus leaching loss risk were 3 and 2.93, respectively. These two areas belonged to strong secondary of risk of phosphate leaching loss. In the new vegetable planting field less than 2 yr (Ningxiang), the index was 0.06, which had almost no risk of phosphorus leaching. In vegetable soils in the suburban region of Changsha, the phosphorus leaching peotential is high and the phosphorus leaching loss is related to chronic length of vegetable cropping. | QIN Hong-ling QUAN Zhi LIU Xin-liang LI Ming-de ZONG Yong WU Jin-shui WEI Wen-xue | 2010 | Agricultural Sciences in China2010,9,11: | 15 |
| 4 | Large-scale analysis of small RNAs derived from traditional Chinese herbs in human tissues显示文摘Plant-derived microRNAs have recently been reported to function in human blood and tissues. Controversy was immediately raised due to possible contamination and the lack of large sample sizes. Here, we report thousands of unique small RNAs derived from traditional Chinese medicine(TCM) herbs found in human blood cells and mouse lung tissues using a large-scale analysis.We extracted small RNAs from decoctions of 10 TCM plants(Ban Zhi Lian, Chai Hu, Chuan Xin Lian, Di Ding Zi Jin, Huang Qin, Jin Yin Hua, Lian Qiao, Pu Gong Ying, Xia Ku Cao, and Yu Xing Cao) and obtained millions of RNA sequences from each herb. We also obtained RNA-Seq data from the blood cells of humans who consumed herbal decoctions and from the lung tissues of mice administered RNAs from herbal decoctions via oral gavage. We identified thousands of unique small RNA sequences in human blood cells and mouse lung tissues. Some of these identified small RNAs from Chuan Xin Lian and Hong Jing Tian could be mapped to the genomes of the herbs, confirming their TCM plant origin. Small RNAs derived from herbs regulate mammalian gene expression in a sequence-specific manner, and thus are a superior novel class of herbal drug components that hold great potential as oral gene-targeted therapeutics, highlighting the important role of herbgenomics in their development. | Fengming Huang Jianchao Du Zhu Liang Zhichao Xu Jiantao Xu Yan Zhao Yexuan Lin Song Mei Quan He Jindong Zhu Qiang Liu Yanxu Zhang Yuhao Qin Wei Sun Jingyuan Song Shilin Chen Chengyu Jiang | 2019 | Science China(Life Sciences)2019,62,3: | 14 |
| 5 | The Impacts of Mosquito Density and Meteorological Factors on Dengue Fever Epidemics in Guangzhou, China, 2006-2014: a Time-series Analysis显示文摘Objective To explore the associations between the monthly number of dengue fever(DF) cases and possible risk factors in Guangzhou, a subtropical city of China. Methods The monthly number of DF cases, Breteau Index(BI), and meteorological measures during 2006-2014 recorded in Guangzhou, China, were assessed. A negative binomial regression model was used to evaluate the relationships between BI, meteorological factors, and the monthly number of DF cases. Results A total of 39,697 DF cases were detected in Guangzhou during the study period. DF incidence presented an obvious seasonal pattern, with most cases occurring from June to November. The current month's BI, average temperature(Tave), previous month's minimum temperature(Tmin), and Tave were positively associated with DF incidence. A threshold of 18.25 °C was found in the relationship between the current month's Tmin and DF incidence. Conclusion Mosquito density, Tave, and Tmin play a critical role in DF transmission in Guangzhou. These findings could be useful in the development of a DF early warning system and assist in effective control and prevention strategies in the DF epidemic. | SHEN Ji Chuan LUO Lei LI Li JING Qin Long OU Chun Quan YANG Zhi Cong CHEN Xiao Guang | 2015 | Biomedical and Environmental Sciences2015,28,5: | 12 |
| 6 | Modern pollen assemblages from surface lake sediments in northwestern China and their importance as indicators of vegetation and climate显示文摘The modern pollen assemblages of surface lake sediments and topsoils in northwestern China were studied to understand the relationship of modern pollen data with contemporary vegetation and climate, and the differences between the pollen assemblages of surface lake sediments and topsoils. The results show that Chenopodiaceae and Artemisia are dominant elements in the pollen assemblages of northwestern China. Additionally, Ephedra, Cyperaceae, Asteraceae, Poaceae, Picea, Pinus, and Betula are also important pollen taxa. Both pollen assemblages and principal component analysis indicate that pollen data from surface lake sediments and topsoils can be used to differentiate the main vegetation types of this region(desert, steppe, meadow and forest). However, differences exist between modern pollen assemblages of the two types of sediments due to the different relevant source areas of pollen and degrees of pollen preservation. For example, the larger relevant source area of surface lake sediment results in a higher abundance of Betula in pollen assemblage from surface lake sediment, whereas the tendency to disintegrate thin-walled pollen types in topsoil leads to a higher proportion of resistant pollen, such as Asteraceae. Linear regression analysis indicates that the Artemisia/Chenopodiaceae(A/C) ratio in pollen assemblages of surface lake sediments can be used to indicate humidity changes in the study area. However, the A/C ratio in topsoils should be used carefully. Our results suggest that pollen data from surface lake sediments would be better references for interpreting the fossil pollen assemblages of lake cores or lacustrine profiles. | QIN Feng ZHAO Yan LI Quan CAI MaoTang | 2015 | Science China Earth Sciences2015,58,9: | 11 |
| 7 | Inactivated Sendai Virus Suppresses Murine Melanoma Growth by Inducing Host Immune Responses and Down-regulating β-catenin Expression显示文摘Objective This paper aims to investigate the anti-tumor mechanism of inactivated Sendai virus (Hemagglutinating virus of Japan envelope, HVJ-E) for murine melanoma (B16F10). Methods The murine dendritic cells (DCs) were treated with HVJ-E, and then the cytokines secreted from DCs and costimulation-related molecules on DCs were measured. Meanwhile, the expression of β-catenin in HVJ-E treated murine melanoma cells was detected. In addition, HVJ-E was intratumorally injected into the melanoma on C57BL/6 mice, and the immune cells, CTL response and tumor volume were analyzed. Results HVJ-E injected into B16F10 melanoma obviously inhibited the growth of the tumor and prolonged the survival time of the tumor-bearing mice. Profiles of cytokines secreted by dendritic cells (DCs) after HVJ-E stimulation showed that the number of cytokines released was significantly higher than that elicited by PBS (P<0.05). The co-stimulation-related molecules on DCs were comparable to those stimulated by LPS. Immunohistochemical examinations demonstrated the repression of β-catenin in B16F10 melanoma cells after HVJ-E treatment. Meanwhile, real-time reverse transcription PCR revealed that HVJ-E induced a remarkable infiltration of CD11c positive cells, chemokine ligand 10 (CXCL10) molecules, interleukin-2 (IL-2) molecule, CD4 + and CD8 + T cells into HVJ-E injected tumors. Furthermore, the mRNA expression level of β-catenin in the HVJ-E injected tumors was also down-regulated. In addition, B16F10-specific CTLs were induced significantly after HVJ-E was injected into the tumor-bearing mice. Conclusion This is the first report to show the effective inhibition of melanoma tumors by HVJ-E alone and the mechanism through which it induces antitumor immune responses and regulates important signal pathways for melanoma invasion. Therefore, HVJ-E shows its prospect as a novel therapeutic for melanoma therapy. | ZHANG Quan YUAN Wei Feng ZHAI Guo Qin XUE Zheng Feng ZHU Hong Fei XU Xiang Ming | 2012 | Biomedical and Environmental Sciences2012,25,5: | 9 |
| 8 | Multi-center Study of Enteral Feeding Practices in Hospitalized Late Preterm Infants in China显示文摘Objective To investigate the current enteral feeding practices in hospitalized late preterm infants in the Beijing area of China. Methods A multi-center, cross-sectional study was conducted. Infants born after 34 weeks and before 37 weeks of gestation were enrolled from 25 hospitals in the Beijing area of China from October 2015 to October 2017. Data on enteral feeding practices were collected and analyzed. Results A total of 1,463 late preterm infants were enrolled, with a mean gestational age(GA) of 35.6(34.9, 36.1) weeks. The percentage of exclusive breastfeeding was 4.5% at the initiation of enteral feeding but increased to 14.4% at discharge. When human milk was not available, most infants(46.1%) were fed with preterm infant formula. The rate of exclusive human milk feeding in infants born at 34 weeks gestation was higher than at discharge(21.1% of infants born at 34 weeks' GA versus 12.1% of infants born at 35 weeks' GA versus 12.3% of infants born at 36 weeks' GA, P < 0.001). Only 28.4% of late preterm infants achieved full enteral feeding at discharge, and only 19.2% achieved 120 kcal/(kg·d) by enteral feeding at discharge. Importantly, 40.5% of infants did not regain the birth weight at discharge. Conclusion Enteral feeding support of late preterm infants has not been standardized to achieve optimal growth. Moreover, the human milk feeding rate was low, and many late preterm infants did not achieve the goal of enteral feeding and failed to regain birth weight at the time of discharge. More aggressive enteral feedings protocols are needed to promote human milk feeding and optimize growth for late preterm infants. | QUAN Mei Ying LI Zheng Hong WANG Dan Hua SCHIBLER Kurt YANG Li LIU Jie QIN Xuan Guang ZHANG Xin HAN Tong Yan ZHANG Wei | 2018 | Biomedical and Environmental Sciences2018,31,7: | 6 |
| 9 | IL-17 sustains the plasma cell response via p38-mediated Bcl-xL RNA stability in lupus pathogenesis显示文摘Recent studies have demonstrated a central role for plasma cells in the development of autoimmune diseases,such as systemic lupus erythematosus(SLE).Currently,both the phenotypic features and functional regulation of autoreactive plasma cells during SLE pathogenesis remain largely unclear.In this study,we first found that a major subset of IL-17 receptor-expressing plasma cells potently produced anti-dsDNA IgG upon IL-17A(IL-17)stimulation in SLE patients and lupus mice.Using a humanized lupus mouse model,we showed that the transfer of Th17 cell-depleted PBMCs from lupus patients resulted in a significantly reduced plasma cell response and attenuated renal damage in recipient mice compared to the transfer of total SLE PBMCs.Moreover,long-term BrdU incorporation in lupus mice detected highly enriched long-lived BrdU+subsets among IL-17 receptor-expressing plasma cells.Lupus mice deficient in IL-17 or IL-17 receptor C(IL-17RC)exhibited a diminished plasma cell response and reduced autoantibody production with attenuated renal damage,while the adoptive transfer of Th17 cells triggered the plasma cell response and renal damage in IL-17-deficient lupus mice.In reconstituted chimeric mice,IL-17RC deficiency resulted in severely impaired plasma cell generation but showed no obvious effect on germinal center B cells.Further mechanistic studies revealed that IL-17 significantly promoted plasma cell survival via p38-mediated Bcl-xL transcript stabilization.Together,our findings identified a novel function of IL-17 in enhancing plasma cell survival for autoantibody production in lupus pathogenesis,which may provide new therapeutic strategies for the treatment of SLE. | Kongyang Ma Wenhan Du Fan Xiao Man Han Enyu Huang Na Peng Yuan Tang Chong Deng Lixiong Liu Yulan Chen Jingjing Li Shiwen Yuan Qin Huang Xiaoping Hong Dajun Hu Xiaoyan Cai Quan Jiang Dongzhou Liu Liwei Lu | 2021 | Cellular & Molecular Immunology2021,18,7: | 6 |
| 10 | A single institution experience using the LigaSure vessel sealing system in video-assisted thoracoscopic surgery for primary spontaneous pneumothorax显示文摘This study sought to report our 6-year experience with the LigaSure vessel sealing system(LVSS) in videoassisted thoracoscopic surgery(VATS) for primary spontaneous pneumothorax.A series of 180 consecutive patients with primary spontaneous pneumothorax were operated on in our institution from May 2005 to December 2010.Intraoperatively,large lesions(bullae or blebs) with a diameter more than 2 cm were resected by staplers,and the residual lesions were treated by LVSS.LVSS was also used to ablate the apical area when no lesions were found.Conventional apical pleural abrasion was done in all cases.All patients were successfully treated using VATS with minimal perioperative bleeding.The mean operating time was 76 minutes(range,43-160 minutes) for single-side procedures and 169 minutes(range,135-195 minutes) for bilateral procedures,the mean number of applied staples was 1.93 per patient(range,0-8 days),the duration of drainage was 3.8 days(range,2-15 days),and the duration of hospital stay was 5.8 days(range,3-16 days).Postoperative complications included persistent air leak(> 5 days) in 11 cases(6.1%) and residual pneumothorax in 6(3.3%).None required reoperation.The mean duration of follow-up was 57 months(range,24-105 months).Recurrence was seen in three cases(1.7%),and all underwent another operation thereafter.None of the lesions in the relapse cases received ablation with LVSS in the first operation.LVSS can optimize VATS for primary spontaneous pneumothorax and reduces the use of single-use staples.The method is safe,easy to use,and cost-effective and produces satisfactory results. | Zhi Li Liang Chen Jun Wang Jianwei Qin Quan Zhu Bin Zhang Yijiang Chen | 2014 | The Journal of Biomedical Research2014,28,6: | 6 |
| 11 | Characteristics of the modern pollen assemblages from different vegetation zones in Northeast China:Implications for pollen-based climate reconstruction显示文摘Northeast China is an essential area for studying the strength of East Asian Summer Monsoon(EASM), due to its northernmost location in EASM domain. However, the lack of sufficient modern pollen data in this region hinders an effective interpretation of fossil pollen records and quantitative vegetation/climate reconstructions. Here, 44 surface pollen samples from forest, steppe, and meadow were used to explore pollen-vegetation-climate relationships. Cluster analysis, species indicator analysis, and principal components analysis, were used to identify the discontinuous and continuous trends in pollen dataset. In addition, correlation analysis and boosted regression trees were used to investigate primary explanatory variables, while coinertia analysis and redundancy analysis to examine pollen-vegetation and pollen-climate correlations respectively. Our results show that:(1) vegetation can be well represented by surface pollen assemblages, i.e. forest is characterized by a high proportion of tree pollen(>70%) dominated by Betula(>40%) along with Alnus, Larix, and Pinus, whereas Steppe by herb pollen(>80%),dominated by Artemisia, Chenopodiaceae;(2) significant correlations exist between pollen assemblages and mean annual temperature and then mean annual precipitation;(3) pollen ratios of Artemisia/Chenopodiaceae and arboreal/non-arboreal can respectively be used as good indicators of humidity and temperature in Northeast China. | Qiaoyu CUI Yan ZHAO Feng QIN Chen LIANG Quan LI Rongwei GENG | 2019 | Science China Earth Sciences2019,62,10: | 5 |
| 12 | Segmentation of Tumor Ultrasound Image via Region-Based Ncut Method显示文摘To segment the tumor region precisely is a prerequisite for ultrasound navigation and treatment. In this paper, a normalized cut method to segment tumor ultrasound image is proposed by means of simple linear iterative clustering for presegmentation procedure. The first step, we use simple linear iterative clustering algorithm to divide the image into a number of homogeneous over-segmented regions. Then, these regions are regarded as nodes, and a similarity matrix is constructed by comparing the histograms of each two regions. Finally, we apply the Ncut method to merging the over-segmented regions, then the image segmentation process is completed. The results show that the proposed segmentation scheme handles the strong speckle noise, low contrast, and weak edges well in ultrasound image. Our method has high segmentation precision and computation efficiency than the pixel-based Ncut method. | QUAN Long ZHANG Dong YANG Yan LIU Yu QIN Qianqing | 2013 | Wuhan University Journal of Natural Sciences2013,18,4: | 5 |
| 13 | Electrocatalytic dechlorination of 2,4,5-trichlorobiphenyl using an aligned carbon nanotubes electrode deposited with palladium nanoparticles显示文摘Palladium loaded carbon nanotubes cathode with well-aligned nanotubes array was successfully fabricated on a titanium foil (Pd/CNTs/Ti) using a chemical vapor deposition technique and subsequent electrochemical deposition method. Pd particles were well dispersed on CNTs wall surfaces with average sizes no more than 20 nm, in most cases around 10 nm. Experiments for dechlorination of 2,4,5-trichlorobiphenyl (PCB 29) in methanol/water solution were carried out for the first time using Pd/CNTs/Ti cathode for investigation of its performance in electrocatalytic dechlorination of PCBs. Results show that Pd/CNTs/Ti presented better dechlorination efficiency (up to 90% in 6 h) than Pd/Ti and Pd/graphite cathodes owing to unique properties owned by CNTs, which benefited enhanced dechlorination of PCB 29. Complete dechlorination for PCB 29 was observed and biphenyl was identified to be final dechlorination product. The amount of Pd loading, cathode potential, and electrolytes were found to be key factors influencing dechlorination performance. | CHEN Shuo QIN ZhenLin QUAN Xie ZHANG YaoBin ZHAO HuiMin | 2010 | Chinese Science Bulletin2010,55,4: | 4 |
| 14 | Curcumin protects against acetaminophen-induced apoptosis in hepatic injury显示文摘AIM:To explore the effects of curcumin(CMN)on hepatic injury induced by acetaminophen(APAP)in vivo.METHODS:Male mice were randomly divided into three groups:groupⅠ(control)mice received the equivalent volumes of phosphate-buffered saline(PBS)intraperitoneally(ip);GroupⅡ[APAP+carboxymethylcellulose(CMC)]mice received 1%CMC(vehicle)2h before APAP injection;GroupⅢ(APAP+CMN)mice received curcumin(10 or 20 mg/kg,ip)2 h before before or after APAP challenge.In GroupsⅡandⅢ,APAP was dissolved in pyrogen-free PBS and injected at a single dose of 300 mg/kg.CMN was dissolved in 1%CMC.Mice were sacrificed 16 h after the APAP injection to determine alanine aminotransferase(ALT)levels in serum and malondialdehyde(MDA)accumulation,superoxide dismutase(SOD)activity and hepatocyte apoptosis in liver tissues.RESULTS:Both pre-and post-treatment with curcumin resulted in a significant decrease in serum ALT compared with APAP treatment group(10 mg/kg:801.46±661.34 U/L;20 mg/kg:99.68±86.48 U/L vs 5406.80±1785.75 U/L,P<0.001,respectively).The incidence of liver necrosis was significantly lowered in CMN treated animals.MDA contents were significantly reduced in 20 mg/kg CMN pretreatment group,but increased in APAP treated group(10.96±0.87 nmol/mg protein vs 16.03±2.58 nmol/mg protein,P<0.05).The decrease of SOD activity in APAP treatment group and the increase of SOD in 20 mg/kg CMN pretreatment group were also detected(24.54±4.95 U/mg protein vs 50.21±1.93 U/mg protein,P<0.05).Furthermore,CMN treatment efficiently protected against APAPinduced apoptosis via increasing Bcl-2/Bax ratio.CONCLUSION:CMN has significant therapeutic potential in both APAP-induced hepatotoxicity and other types of liver diseases. | Gang Li Jun-Bao Chen Chao Wang Zhi Xu Hao Nie Xiao-Yan Qin Xiao-Mei Chen Quan Gong | 2013 | World Journal of Gastroenterology2013,19,42: | 4 |
| 15 | A super pan-genomic landscape of rice显示文摘Pan-genomes from large natural populations can capture genetic diversity and reveal genomic complexity.Using de novo longread assembly,we generated a graph-based super pan-genome of rice consisting of a 251-accession panel comprising both cultivated and wild species of Asian and African rice.Our pan-genome reveals extensive structural variations(SVs)and gene presence/absence variations.Additionally,our pan-genome enables the accurate identification of nucleotide-binding leucine-rich repeat genes and characterization of their inter-and intraspecific diversity.Moreover,we uncovered grain weight-associated SVs which specify traits by affecting the expression of their nearby genes.We characterized genetic variants associated with submergence tolerance,seed shattering and plant architecture and found independent selection for a common set of genes that drove adaptation and domestication in Asian and African rice.This super pan-genome facilitates pinpointing of lineage-specific haplotypes for trait-associated genes and provides insights into the evolutionary events that have shaped the genomic architecture of various rice species. | Lianguang Shang Xiaoxia Li Huiying He Qiaoling Yuan Yanni Song Zhaoran Wei Hai Lin Min Hu Fengli Zhao Chao Zhang Yuhua Li Hongsheng Gao Tianyi Wang Xiangpei Liu Hong Zhang Ya Zhang Shuaimin Cao Xiaoman Yu Bintao Zhang Yong Zhang Yiqing Tan Mao Qin Cheng Ai Yingxue Yang Bin Zhang Zhiqiang Hu Hongru Wang Yang Lv Yuexing Wang Jie Ma Quan Wang Hongwei Lu Zhe Wu Shanlin Liu Zongyi Sun Hongliang Zhang Longbiao Guo Zichao Li Yongfeng Zhou Jiayang Li Zuofeng Zhu Guosheng Xiong Jue Ruan Qian Qian | 2022 | Cell Research2022,32,10: | 3 |
| 16 | Effect of Anodization Parameters on Morphology and Photocatalysis Properties of TiO_2 Nanotube Arrays显示文摘Highly ordered TiO2 nanotube arrays were fabricated via electrochemical anodization of high purity Ti foil in fluoride-containing electrolyte. The effects of applied anodization potential, anodization time on the formation of TiO2 nanotube arrays and the photocatalytic degradation of methylene blue(MB) were discussed. The TiO2 nanotube arrays calcined at 500 °C for 2 h show pure anatase phase. The pore diameters of TiO 2 nanotube arrays can be adjusted from 30 to 90 nm using a different anodization voltage.Anodization time mainly influenced TiO 2 tube length, and by increasing the anodization time, the nanotube length became longer gradually. When the anodization potential was 40 V, the average growth rate of TiO 2 nanotube was about 4.17 μm/h. Both anodization potential and time had important effects on the photocatalytic efficiency. The TiO 2 nanotube arrays obtained at anodization potential of 40 V for 1 h showed the best photocatalytic degradation ratio of MB. | Lianjie Qin Qijing Chen Ruijun Lan Runqian Jiang Xiao Quan Bin Xu Feng Zhang Yongmin Jia | 2015 | Journal of Materials Science & Technology2015,31,10: | 3 |
| 17 | Synthesis of 2,2'-(Substituted Arylmethylene)bis(1,6,6-trimethyl- 6,7,8,9-tetrahydrophenanthro[1,2-b]furan-10,11-dione) Derivatives显示文摘The reactions of tanshinone IIA with aromatic aldehydes have been investigated and several 2, 2’-(substituted arylmethylene) bis (1,6,6-trimethyl-6,7,8,9-tetrahydrophenanthro[1,2-b]- furan-10, 11-dione) derivatives were obtained. | Jiang Ke QIN Xian Zhang BU Yu Fang WANG Zhi Yun DU Xing Yuan WANG Zhi Shu HUANG Lin MA Lin Kun AN Lian Quan GU | 2005 | Chinese Chemical Letters2005,16,11: | 3 |
| 18 | Melting kinetics of bulk SiC using molecular dynamics simulation显示文摘The melting kinetics of bulk SiC is studied by using classical molecular dynamics simulation.The mean square displacement,diffusion coefficient,Lindemann index and non-Gaussian parameter are used to analyze the melt nucleation and macrokinetics in the melting process.Melting occurs when the superheated crystal spontaneously generates many Lindemann particles in which they coalesce together to form melt nucleation inside the crystal.The melting process is similar to the solidification process,but also experiences three processes such as nucleation,growth and relaxation.The melting process can be divided into premelting,accelerated melting and relaxation stages.Using the sectional method can properly reflect the kinetic characteristics of the melting process. | YAN WanJun GAO TingHong GUO XiaoTian QIN YunXiang XIE Quan | 2013 | Science China(Physics,Mechanics & Astronomy)2013,56,9: | 2 |
| 19 | One-bath synthesis of hydrophilic molecularly imprinted quantum dots for selective recognition of chlorophenol显示文摘简单一个洗澡策略被开发了综合新奇 CdTe@SiO2@MIP (分子地印了并且 silica-functionalized CdTe 量点, MISFQD ),在哪个硅石壳在 CdTe 量点( CdTe@SiO2 QD )的表面上是涂的然后为 4-chlorophenol ( 4-CP )的选择识别的聚合物作为 stabilizer 用 mercaptoacetic 酸在 CdTe@SiO2 QD 的表面上被构造, 3-aminopropyl-trimethoxysilane ( APTES )同样功能的单体和 tetraethoxysilane ( TEOS )作为交叉连接一CdTe@SiO2@MIP 的结构被 ultravioletvisible 吸收,荧光,英尺红外光谱和粉末 X 光检查衍射分析。CdTe@SiO2@MIP 的应用程序和描述被实验调查。所有结果显示 CdTe@SiO2@MIP 罐头有选择地认出 4-chlorophenol。 | Tai Ye Shi Yan Lu Qin Qin Hu Xin Jiang Guo Fen Wei Jing Jing Wang Jian Quan Lu | 2011 | Chinese Chemical Letters2011,22,10: | 2 |
| 20 | The effect of pH on the sorption of gold nanoparticles on illite显示文摘Sorption between nanoparticles(NPs)and minerals may critically affect the migration of associated elements as well as the environmental impact of NPs.Since illite is widely present in soil,sediment,and water,we have experimentally investigated the sorption behavior of citrate-coated gold nanoparticles(AuNPs)as model NPs on illite under different pH and mineral mass conditions.We demonstrated that sorption of these negatively charged AuNPs strongly depended on the suspension pH.At pH above 8,which coincided with the apparent point of zero charge(pH 7.9)of our illite sample,only marginal sorption of AuNPs was observed.At pH 3-8,significant sorption of AuNPs on illite was found,with almost complete sorption occurring at more acidic conditions(pH 3-4).TEM observations revealed that sorption took place through the attachment AuNPs on illite edges.At pH 2,AuNPs mostly formed chain-like fused structures and precipitated out of the suspension.Based upon the above pH dependence,residual organic ligand content after sorption,and complementary sorption results with positively charged AuNPs,we conclude that the sorption process is mainly driven by the electrostatic attraction between negatively charged AuNPs and positively charged illite edges,with possible competitive involvement of citrate molecules.We expect that our findings will improve our understanding of NP-mineral interaction and the environmental fate of NPs. | Yuhong Fu Quan Wan Zonghua Qin Xin Nie Wenbin Yu Shanshan Li | 2020 | Acta Geochimica2020,39,2: | 2 |