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| 1 | Regularity of sediment transport and sedimentation during floods in the lower Yellow River,China显示文摘The flood season is the main period of flow,sediment transport,and sedimentation in the lower Yellow River(LYR).Within the flood season,most of the flow,sediment transport,and sedimentation occurs during flood events.Because of the importance of floods in forming riverbeds in the LYR,the regularity of sediment transport and sedimentation during floods in the LYR was studied.Measured daily discharge and sediment transport rate data for the LYR from 1960 to 2006 were used.A total of 299 floods were selected;these floods had a complete evolution of the flood process from the Xiaolangdi to the Lijin hydrological stations.For five hydrological stations(Xiaolangdi,Huayuankou,Gaocun,Aishan,and Lijin),a correlation was first established for floods of different magnitudes between the average sediment transport rate at a given station and the average sediment concentration at the closest upstream station.The results showed that the sediment transport rate at the downstream station was strongly correlated with the inflow(upstream station)sediment concentration during a flood event.A relation then was established between sedimentation in the LYR and the average sediment concentration at the Xiaolangdi station during a flood event.From this relation,the critical sediment concentrations were obtained for absolute erosion,sedimentation equilibrium,and absolute deposition during floods of different magnitudes in the LYR.The results of the current study contribute to a better understanding of the mechanisms of sediment transport and the regularity of sedimentation in the LYR during floods,and provide technical support to guide the joint operation of reservoirs and the regulation of the LYR. | Qingchao Guo Zhao Zheng Liemin Huang Anjun Deng | 2020 | International Journal of Sediment Research2020，35，1： | 6 |
| 2 | The protective effects of peptides from Chinese baijiu on AAPH-induced oxidative stress in HepG2 cells via Nrf2 signaling pathway显示文摘Antioxidant peptides have been widely reported.However,only a few reports have been published examining the antioxidant peptides derived from Chinese baijiu.In this study,6 novel peptides derived from Chinese baijiu were identified successfully using high-performance liquid chromatography-quadrupoletime-of-flight mass spectrometry(HPLC-QTOF-MS)with a concentration of 0.835–24.540μg/L.The underlying molecular mechanisms were investigated,and their cytoprotective effects were examined against 2,2’-azobis(2-methylpropanimidamidine)dihydrochloride(AAPH)-induced oxidative stress in Hep G2 cells.The results showed that these peptides exerted protective effects by suppressing reactive oxygen species(ROS)generation,preventing malondialdehyde(MDA)formation,and upregulating cellular antioxidant enzyme activities(SOD,CAT,and GSH-Px)in a dose-dependent manner.Further experiments proved that these peptides exerted antioxidant effects via Nrf2/ARE-mediated signaling pathway by promoting Nrf2 nuclear translocation,inhibiting ubiquitination,and enhancing transcription capacity of Nrf2 in Hep G2 cells.These findings provide the molecular basis for the effects of antioxidant peptides derived from Chinese baijiu,which is important for a deeper understanding of the relationship between human health and moderate drinking. | Jiaying Huo Yuezhang Ming Huifeng Li Anjun Li Jiwen Zhao Mingquan Huang Weizheng Sun Jihong Wu Jinglin Zhang | 2022 | Food Science and Human Wellness2022，11，6： | 3 |
| 3 | A specific aggregation-induced emission-conjugated polymer enables visual monitoring of osteogenic differentiation显示文摘Osteogenic differentiation is the basis of bone growth and repair related to many diseases,in which evaluating the degree and ability of osteogenic transformation is quite important and highly desirable.However,fixing or stopping the growth of cells is required for conventional methods to monitor osteogenic differentiation,which cannot realize the full investigation of the dynamic process.Herein,a new anion conjugated polymer featuring aggregation-induced emission(AIE)characteristics is developed with excellent solubility for in-situ monitoring the process of osteogenic differentiation.This novel polymer can bind with osteogenic differentiated cells,and the intracellular fluorescence increases gradually with the enhancement of osteogenic differentiation.Moreover,it possesses good biosafety with negligible effect on cell activity and osteogenic differentiation,which cannot be realized by the typical method of Alizarin Red S staining.Further study shows that the polymer crosses the cell membrane through endocytosis and enriches in lysosomes,whereas no obvious fluorescence is detected with other cells,including non-differentiated osteoblast cells,under the same conditions,demonstrating the high selectivity.This is the first fluorescent probe with excellent specificity to realize real-time observation of the process of osteogenic differentiation.Therefore,PTB-EDTA shows great promise in the study of osteogenic differentiation and related applications. | Zhenyu Zheng Taotao Zhou Rong Hu Minjun Huang Xiang Ao Jun Chu Tao Jiang Anjun Qin Zhongmin Zhang | 2020 | Bioactive Materials2020，5，4： | 3 |
| 4 | FGD status and progress 显示文摘 | Cai Jianhai Wen Anjun Huang Zijun | 2008 | Journal of Mining Express2008，67，3： | 1 |
| 5 | Preparation and upconversion luminescence modification of YbPO4:Er3+inverse opal heterostructure显示文摘Photonic crystal heterostructures composed of YbPO_4:Er^(3+) inverse opal and polystyrene opal were prepared via a template-assisted process, which exhibited two photonic band gaps. The microstructure,phase and optical properties of photonic crystal heterostructures were investigated by x-ray diffraction,scanning electron microscopy, fluorescence spectroscopy, absorption spectroscopy, fluorescence lifetime,etc. The upconversion emission suppression caused by single photonic band gap from the following YbPO_4:Er^(3+) inverse opal or the upper opal was observed. The upconversion luminescence was strongly suppressed due to the two photonic band gap overlapping effect caused by the following YbPO_4:Er^(3+) inverse opal or the upper opal. The modified mechanisms of upconversion luminescence were discussed by the upconversion luminescence lifetime of YbPO_4:Er^(3+) photonic crystal heterostructures. The results demonstrated the modified upconversion luminescence is attributed to the photon trapping caused by Bragg reflection of photonic crystal heterostructures. | Zhuangzhuang Chai Zhengwen Yang Anjun Huang Chengye Yu Jianbei Qiu Zhiguo Song | 2017 | Journal of Rare Earths2017，35，12： | 0 |
| 6 | In-situ generation of poly(quinolizine)s via catalyst-free polyannulations of activated diyne and pyridines显示文摘The development of new polymerization routes to afford N-heterocyclic polymers is of vital importance and highly desired for various practical applications. Herein, a facile and efficient polyannulation reaction of dual-activated alkyne and pyridines was developed to construct novel N-heterocyclic poly(quinolizine)s. This polymerization can proceed smoothly under catalystfree conditions with 100% atom utilization to furnish poly(quinolizine)s with high molecular weights(up to 34,100) and welldefined structures in acceptable yields. The resulting polymers show good solubility, high thermal stability and strong red emission. Moreover, the prepared poly(quinolizine)s exhibit low cytotoxicity and can selectively label lysosomes in live cells.Considering the remarkable advantages of readily available raw materials, mild polymerization conditions, atom economy, and excellent product performance, this new and efficient polymerization tool will open up enormous opportunities for preparing functional N-heterocyclic polymers. | Benzhao He Jiachang Huang Jing Zhang Xinyue Liu Dong Wang Herman H.Y.Sung Yajun Liu Anjun Qin Jacky W.Y.Lam Ben Zhong Tang | 2022 | Science China Chemistry2022，65，4： | 0 |
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