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NOVEL AMPHIPHILIC FLUORESCENT GRAFT COPOLYMER: SYNTHESIS, CHARACTERIZATION AND ENCAPSULATION OF A HYDROPHOBIC AGENT

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Chinese Journal of Polymer Science 2006年第3期24卷 315-321页

作者： Zhao-qiang Wu Shu yang Wen-yan liao 孟令芝 College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 China

Novel amphiphilic fluorescent graft copolymer （PVP-PyAHy） was successfully synthesized by the free radical copolymerization of hydrophobic monomer N-（1-pyrenebutyryl）-N＇-acryloyl hydrazide （PyAHy） with hydrophilic precursor polymers of vinyl-functionalized poly（N-vinylpyrrolidone）（PVP） in DMF. The copolymer is amphiphilic and has intrinsic fluorescence. FT-IR, ^1H-NMR, TEM, gel permeation chromatography-multi-angle laser light scattering, UV-Vis spectroscopy and fluorescence spectroscopy were used to characterize this copolymer. The TEM observation shows that the copolymer PVP-PyAHy forms micelles in aqueous solution. Results of fluorometric measurements illustrate that the critical micelle concentration （CMC） value of PVP-PyAHy in aqueous solution is about 0.90 mg/mL. To examine the encapsulation ability of the copolymer in aqueous media, methyl yellow was employed as a model hydrophobic agent. The loading level of the polymer to methyl yellow is 8.8 mg/g. The cytotoxicity assays for Madin Darby Canine Kidney （MDCK） cells shows good biocompatibility of PVP-PyAHy in vitro. These results suggest the potential of this copolymer PVP-PyAHy as drugs delivery carrier and fluorescent tracer.

关键词： Amphiphilic copolymer Fluorescence Poly(N-vinylpyrrolidone).

GL-V9 reverses adriamycin resistance in hepatocellular carcinoma cells by affecting JNK2-related autophagy

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Chinese Journal of Natural Medicines 2020年第7期18卷 491-499页

作者： yanG Yue liao yan GUI yan-Ping ZHAO Li GUO Lu-Bo School of Basic Medicine and Clinical Pharmacology China Pharmaceutical UniversityNanjing 211100China Department of Pharmacy Central Hospital Affiliated to Shandong First Medical UniversityJinan 250013China

Adriamycin resistance in HCC seriously hinders the treatment of patients,it is necessary to investigate the *** is involved in adriamycin resistance and JNK2 is related to ***,whether JNK2 inducing drug resistance though autophagy is ***-V9,a new synthesized flavonoid derivative,has been proved of its anti-tumor *** aim of the study is to explore the role of JNK2-related autophagy on adriamycin-induced drug resistance and the effects of GL-V9 on reversing adriamycin *** concluded that JNK2 played an important role in drug resistance induced by *** high expression of JNK2 activated protective autophagy in Hep G2-DOXR cells under non-stress condition,which protected cells from drug ***,we found that GL-V9 reversed adriamycin resistance by blocking the JNK2-related protective autophagy in HCC.

关键词： GL-V9 Drug resistance JNK2 Autophagy

Advances in Radical Oxidative C--H Alkylation of N-Heteroarenes

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Chinese Journal of Chemistry 2017年第3期35卷 271-279页

作者： Jun-Rong Zhang Li Xu yan-yan liao Jian-Chao Deng Ri-Yuan Tang Department of Applied Chemistry College of Materials and Energy South China Agricultural University Guangzhou Guangdong 510642 China

This review summarizes recent development in C—H alkylation of N ‐heteroarenes via the radical oxidative coupling process. A variety of alkyl radical sources (including alkanes, ethers, alcohols, carboxylic acids, o... 详细信息

关键词： radical oxidative coupling C—H functionalization alkylation heteroarenes

Content-adaptive robust error concealment for packet-lossy H.264 video streaming

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第Z1期7卷 41-47页

作者： liao Ning yan Dan QUAN Zi-yi MEN Ai-dong Multimedia Center School of Telecommunication Engineering Beijing University of Posts & Telecom Beijing 100876 China Multimedia Center School of Telecommunication Engineering Beijing University of Posts & Telecom Beijing 100876 China Multimedia Center School of Telecommunication Engineering Beijing University of Posts & Telecom Beijing 100876 China Multimedia Center School of Telecommunication Engineering Beijing University of Posts & Telecom Beijing 100876 China

In this paper, we present a spatio-temporal post-processing error concealment (EC) algorithm designed initially for a H.264 video-streaming scheme over packet-lossy networks. It aims at optimizing the subjective quality of the restored video under the constraints of low delay and computational complexity, which are critical to real-time applications and portable devices having limited resources. Specifically, it takes into consideration the physical property of motion field in order to achieve more meaningful perceptual video quality, in addition to the improved objective PSNR. Further, a simple bilinear spatial interpolation approach is combined with the improved boundary-match (B-M) based temporal EC approach according to texture and motion activity analysis. Finally, we propose a low complexity temporal EC method based on motion vector interpolation as a replacement of the B-M based approach in the scheme under low-computation requirement, or as a complement to further improve the scheme's performance in applications having enough computation resources. Extensive experiments demonstrated that the proposal features not only better reconstruction, objectively and subjectively, than JM benchmark, but also robustness to different video sequences.

关键词： Error concealment, Error control, H.264/AVC, Video streaming, Lossy transmission

Impact of agricultural intensification on soil organic carbon＂ A study using DNDC in Huantai County, Shandong Province, China

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Journal of Integrative Agriculture 2016年第6期15卷 1364-1375页

作者： liao yan WU Wen-liang MENG Fan-qiao LI Hu College of Resources and Environmental Sciences China Agricultural University/Beijing Key Laboratory of Biodiversity and Organic Farming Beijing 100193 P.R. China Chinese Academy of Agricultural Engineering Beijing 100125 P.R. China Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China

Using the biogeochemical model den itrification/decomposition （DN DC）, the dynamic changes of soil organic carbon （SOC） of farmland from the 1980s to 2030s were investigated in Huantai County, a typical intensive agricultural region in the Huang- Huai-Hai Plain of China. Prior to modelling, validation of the DNDC model against field data sets of SOC from Quzhou Experimental Station in the Huang-Huai-Hai Plain was conducted at the site scale. We compared the simulated results with the observed SOC in Huantai County during 1982-2011 under two different classification methods of simulation unit （the first method integrated soil type and land use of Huantai County to form the overlapped modeling units; the second selected the 11 administrative towns as the modeling units）, and achieved a high accuracy in the model simulation with the improvement of the model parameters. Regional SOC （0-20 cm） density and stocks for Huantai County in the years 2012-2031 were predicted under different scenarios of farming management. Compared with current management practices, optimized fertilization （20% decrease of mineral N）, crop straw incorporation （90%） and appropriate animal manure input （40 kg N ha-1 yr-1） could achieve the highest level of SOC density （56.8% higher than 2011） in the period of 2012-2031. The research highlighted the importance of crop straw incorporation, optimized N fertilization and integration of crop production with ani- mal husbandry on the farmland carbon sequestration for maintaining a high land productivity in the Huang-Huai-Hai Plain.

关键词： agricultural intensification soil organic carbon DNDC nitrogen fertilizer straw incorporation animal manure

Robust spatio-temporal error concealment for packet- lossy H.264 video transmission

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The Journal of China Universities of Posts and Telecommunications 2006年第3期13卷 87-92页

作者： liao Ning yan Dan QUAN Zi-yi MEN Ai-dong Multimedia Center Beijing University of Posts and TelecommunicationsBeijing 100876 China

In this article, a spatio-temporal post-processing error concealment algorithm designed initially for a H.264 video-streaming scheme over packet-lossy networks has been presented. It aims at optimizing subjective quality of restored video and the conventional objective metric, peak signal-to-noise ratio （PSNR）, as well, under the constraints of low delay and computational complexity, which are critical to real-time applications and portable devices having limited resources. Specifically, it takes into consideration physical property of motion to achieve more meaningful perceptual video quality. Further, a content-adaptive bilinear spatial interpolation approach and a temporal error concealment approach are combined under a unified boundary match criterion based on texture and motion activity analysis. Extensive experiments have demonstrated that the proposal not only result in better reconstruction, objectively and subjectively, than the reference software model benchmark, but also results in better robustness to different video sequences.

关键词： error concealment error control H.264/JVT video transmission lossy transmission

Benign lymphoepithelial cyst of parotid gland without human immunodeficiency virus infection:A case report

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World Journal of Clinical Cases 2023年第4期11卷 931-937页

作者： yan liao yan-Jie Li Xian-Wen Hu Rui Wen Pan Wang Department of Nuclear Medicine Affiliated Hospital of Zunyi Medical UniversityZunyi 563003Guizhou ProvinceChina Department of Critical Care Medicine The Second Affiliated Hospital of Zunyi Medical UniversityZunyi 563003Guizhou ProvinceChina

BACKGROUND Benign lymphoepithelial cyst(BLEC)of the parotid gland is a rare benign embryonic-dysplastic cystic tumor in the anterolateral neck that occurs most commonly in human immunodeficiency virus(HIV)-positive adults and rarely in non-acquired immune deficiency syndrome *** main presentation is a slow-growing,painless mass,and secondary infection may cause acute inflammatory *** SUMMARY A 44-year-old Chinese male patient presented with a 1-year history of a mass in the left side of the *** physical examination,a mass similar in size and shape to a quail egg was found in the left parotid *** mass was tough,without tenderness,and easily *** results of HIV tests,including antibody and nucleic acid tests and CD4+T cell examination,were *** examination revealed a left parotid gland *** patient underwent surgical treatment,and BLEC was diagnosed based on postoperative *** 2years of follow-up,the patient survived well without related *** The detailed characteristics of a BLEC in a patient without HIV infection contribute to an improved understanding of this rare disease.

关键词： Benign lymphoepithelial cyst Parotid gland Human immunodeficiency virus Case report

Dendronized Polymers with High FTC-chromophore Loading Density:Large Second-order Nonlinear Optical Effects, Good Temporal and Thermal Stability

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Chinese Journal of Polymer Science 2020年第2期38卷 118-125,I0005页

作者： Meng Jin Zhao-Chen Zhu Qiu-yan liao Qian-Qian Li Zhen Li Department of Chemistry Sauvage Center for Molecular SciencesWuhan UniversityWuhan 430072China Institute of Molecular Aggregation Science Tianjin UniversityTianjin 300072China

In this study,two new dendronized nonlinear optical(NLO)polymers were synthesized with high FTC chromophore loading density by introduction of high generation chromophore dendrons on the side *** to their suitable molecular weights,both of them possessed good solubility in common *** also inherited the advantages of dendrimers(large NLO coefficient),especially for PG2 whose NLO coefficient d33 value was as high as 282 pm·V^–***,PG2 had a good temporal stability with 80%of its maximum value being retained at the temperature as high as 129℃.

关键词： Second-order nonlinear optics Dendronized polymers Chromophore

High level of intercellular adhesion molecule-1 affects prognosis of patients with hepatocellular carcinoma

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World Journal of Gastroenterology 2015年第23期21卷 7254-7263页

作者： Peng-Peng Zhu Sheng-Guang Yuan yan liao Li-Ling Qin Wei-Jia liao Laboratory of Hepatobiliary and Pancreatic Surgery Affiliated Hospital of Guilin Medical University Affiliated Hospital of Guilin Medical University Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair Disease Prevention and Control Center of Guilin

AIM: To determine the cut-off value of intercellular adhesion molecule-1(ICAM-1) and assess the correlation of ICAM-1 with clinicopathological features and the prognosis of hepatocellular carcinoma(HCC)patients who underwent surgical ***: We prospectively collected clinicopathological data from 236 HCC patients who had undergone successful hepatectomy. Receiver operating characteristic curve analysis was performed to determine the optimal cut-off value of ICAM-1. Enzymelinked immunosorbent assay was used to measure the concentration of ICAM-1 in 236 serum samples isolated from HCC patients and the stratified analysis was used to compare the serum level of ICAM-1 in different HCC subgroups. Immunohistochemistry was performed to test the expression level of the ICAM-1 protein in76 cases of HCC tissues and their adjacent normal liver tissues(ANLT). The survival probability of HCC patients was estimated using Kaplan-Meier plots and differences between the groups were obtained using the log-rank test. Furthermore, independent indicatorsof the prognosis were acquired using a stepwise Cox proportional hazard model to analyze a series of predictors that were associated with disease-free survival(DFS) and overall survival(OS) in HCC ***: Our findings suggested that ICAM-1promotes HCC metastasis and high serum ICAM-1 is significantly associated with alpha-fetoprotein(AFP)(P = 0.022), clinical tumor-node-metastasis stage(P 684 ng/mL was an independent factor for DFS(HR = 1.643; 95

关键词： Hepatocellular carcinoma Intercellularadhesion molecule-1 Prognosis Biomarker Metastasis