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( Qing-bo Yu ),( Qing Wang ),( Xue-xin Yan ),( Tian-liang Yang ),( Meng Yao ),( Kai Zhou ),( Xin-lei Huang ),( Jian-ping Chen ) 대한지질공학회 2019 대한지질공학회 학술발표회논문집 Vol.2019 No.2
The land subsidence poses a nonnegligible threat to production and life, especially in dredger fill area. The essence of land subsidence is soil consolidation. Better evaluation of the degree of soil consolidation presents significant progress for predicting land subsidence. In this study, SBAS-InSAR was conducted to Chenjia town, the typical dredger fill area in Chongming East Shoal, Shanghai. SAR data and precise Orbit data were collected from the ESA satellite Sentinel-1 in recent 2 years with approximately one month intervals. the relationship curve of cumulative subsidence with time is obtained after processing. On this basis, the final settlement and soil consolidation can be estimated by applying the method proposed by Professor Huang Wenxi of China. The results show that: The subsidence rate is faster than 20 mm/a; The estimated final settlement is 26.6-52.9 mm, and the corresponding consolidation degree is 54.6 % on average; Soil mass has not yet been fully consolidated and it still takes a long time to achieve stability. In conclusion, the method proposed in this study can provide a clearer understanding of the consolidation degree, and a new reference for the evaluation and prevention of land subsidence. Future research will focus on longer monitoring time to enrich and improve the method. Acknowledgements This work was financially supported by National Nature Science Foundation of China (Grant No: 41820104001, 41430642 and 41627801) and the Key Laboratory of Land Subsidence Monitoring and Prevention, Ministry of Land and Resources (Grant No. KLLSMP201801).
Yao Qing,Wu Haoyi,Jin Yahong,Wang Chuanlong,Zhang Ruiting,Lin Yujia,Wu Sijian,Hu Yihua 한국물리학회 2022 Current Applied Physics Vol.41 No.-
Nitrogen-doped graphene quantum dots (N-GQD) were synthesized by direct thermal decomposition of ammonium citrate tribasic. With the increment of torrefaction temperature, the average size of N-GQD was increased from 2.56 to 3.73 nm. Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy analysis (XPS) proved the successful doping of nitrogen atoms. Besides, the N-GQDs showed blue fluorescence which was quenched by Fe3+ ions, and the fluorescence intensity of N-GQDs decayed exponentially. Accordingly, the same quenching effect was observed on a test paper prepared by soaking paper in N-GQDs dispersion. The quenching mechanism was due to electron transfer between Fe3+ and functional groups on the surface of N-GQDs which could be confirmed by XPS and diameter growth. Therefore, through this simple method, N-GQDs with high blue fluorescence and high production yield (64%) can be prepared, which provided a new strategy for monitoring and collecting Fe3+ in environmental water.
Qing-Quan Tan,Zong-Yao Sun,Ting Li,Qing-Hua Meng 제어·로봇·시스템학회 2017 International Journal of Control, Automation, and Vol.15 No.6
In this paper, we introduce a new method to solve the problem of output tracking control for a class ofgeneralized high-order uncertain nonlinear systems with disturbance. A key contribution of this paper is a resultrelating its serious uncertainties including unknown high-order terms, unknown nonlinear functions and the signalto be tracked. The main result is that the tracking error belongs to a prescribed small neighborhood of the origin infinite time. Design procedure is presented by improved adding a power integrator method.
A INTERGRATED SYSTEM OF CAD . CAM AND MIS IN PLATES CUTTING (CADMM)
Qing, Zhang Yao,Sheng, Xu Chang 대한전자공학회 1992 HICEC:Harbin International Conference on Electroni Vol.1 No.1
This paper introduces the structure, function, model and implementing of the CADMM system. The integrated importance is transmitting of interface information. The CADMM system is a preliminary attempt in application of CIMS (Computer Intergrated Manufacturing System).
Metastasis-associated Factors Facilitating the Progression of Colorectal Cancer
Zhang, Yao-Yao,Chen, Bin,Ding, Yan-Qing Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.6
Tumor metastasis remains the principal cause of treatment failure and poor prognosis in patients with colorectal cancer. It is a multistage process which includes proteolysis, motility and migration of cells, proliferation in a new site, and neoangiogenesis. A crucial step in the process of intra- and extra-vasation is the activation of proteolytic enzymes capable of degrading the extracellular matrix (ECM). In this stage, urokinase plasminogen activator receptor (uPAR) and matrix metalloproteinases (MMPs) are necessary. Micrometastases need the presence of growth factor and vascular growth factor so that they can form macrometastasis. In addition, cell adhesion molecules (CAMs) and guanine nucleotide exchange factors (GEFs) play important roles in the progression of colorectal cancer and metastatic migration. Further elucidation of the mechanisms of how these molecules contribute will aid in the identification of diagnostic and prognostic markers as well as therapeutic targets for patients with colorectal metastasis.
Pemetrexed is Mildly Active with Good Tolerability for Treatment of Patients with Colorectal Cancer
Zhang, Hui-Qing,Lian, Chang-Hong,Ping, Yao-Dong,Song, Wen-Bin,Lu, Qing-Pu,Xie, Shu-Zhe,Lin, Tao,Cheng, Lin-Zhong Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.19
Purpose: This systematic analysis was conducted to evaluate the efficacy and safety of pemetrexed based salvage chemotherapy for treatment of patients with metastatic colorectal cancer. Methods: Clinical studies evaluating the efficacy and safety of pemetrexed based regimens on response and safety for patients with colorectal cancer were identified using a predefined search strategy. Pooled response rates (RRs) were calculated. Results: For pemetrexed based regimens, 4 clinical studies including 201 patients with advanced colorectal cancer were considered eligible for inclusion. The analysis suggested that, in all patients, pooled RR was 20.4% (41/201). Major adverse effects were neutropenia, anorexia, fatigue, and anemia. No treatment related death occurred with pemetrexed based treatment. Conclusion: This systematic analysis suggests that pemetrexed based regimens are associated with mild activity with good tolerability in treating patients with metastatic colorectal cancer.