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34篇 您的检索式:作者名="Jianfeng Ping"
    题名 作者 年代 出处 被引量
1Lunar topographic model CLTM-s01 from Chang’E-1 laser altimeter显示文摘More than 3 million range measurements from the Chang’E-1 Laser Altimeter have been used to produce a global topographic model of the Moon with improved accuracy. Our topographic model, a 360th degree and order spherical harmonic expansion of the lunar radii, is designated as Chang’E-1 Lunar Topography Model s01 (CLTM-s01). This topographic field, referenced to a mean radius of 1738 km, has an absolute vertical accuracy of approximately 31 m and a spatial resolution of 0.25o (~7.5 km). This new lunar topographic model has greatly improved previous models in spatial coverage, accuracy and spatial resolution, and also shows the polar regions with the altimeter results for the first time. From CLTM-s01, the mean, equatorial, and polar radii of the Moon are 1737103, 1737646, and 1735843 m, respectively. In the lunar-fixed coordinate system, this model shows a COM/COF offset to be (-1.777, -0.730, 0.237) km along the x, y, and z directions, respectively. All the basic lunar shape parameters derived from CLTM-s01 are in agreement with the results of Clementine GLTM2, but CLTM-s01 offers higher accuracy and reliability due to its better global samplings.PING JinSong HUANG Qian YAN JianGuo CAO JianFeng TANG GeShi SHU Rong 2009Science China(Physics,Mechanics & Astronomy)2009,52,7:19
2The Pengguan tectonic dome of Longmen Mountains, Sichuan Province:Mesozoic denudation of a Neoproterozoic magmatic arc-basin system显示文摘Neoproterozoic igneous and metamorphic complexes occur as tectonic domes in the Longmen Mountains of the western margin of the Yangtze Block, and are important in reconstructing the Rodinian supercontinent and constraining the timing and mechanism of tectonic denudational processes. The Pengguan dome consists of granitic intrusions and metamorphic rocks of the Huangshuihe Group and is tectonically overlain by ductilly deformed Sinian to Paleozoic strata. The plutonic intrusions consist of granites with abundant amphibolite enclaves. New LA-ICP-MS zircon U-Pb dating yielded an emplacement age of 809±3 Ma and a protolith age of 844±6 Ma for the granite. The granitic rocks have geochemical signatures typical of A-type granites, indicating their formation under an extensional environment, by melting of newly formed tonalite-trondhjemite-granodiorite (TTG) rocks. A detachment fault, characterized by variable ductile shear deformation of S-C fabric and ESE-ward kinematics, separates the Pengguan dome from the Sinian-Paleozoic cover. 40Ar/39Ar dating of muscovite from the mylonite in the detachment fault of the dome demonstrates that ductile deformation occurred at ~160 Ma. This study indicates the existence of a Neoproterozoic magmatic arc-basin system, which was denudated by a Jurassic middle crustal ductile channel flow along the Longmenshan thrust belt.YAN DanPing ZHOU MeiFu WEI GuoQing GAO JianFeng LIU ShaoFeng XU Ping SHI XiaoYing 2008Science China Earth Sciences2008,51,11:9
3Comparison and modeling of two biofilm processes applied to decentralized wastewater treatment显示文摘In order to control water pollution in the rapidly urbanizing South China area,biological contact oxidation(BCO)process and biological aerated filter(BAF)process were applied in a pilot-scale experiment for decentralized wastewater treatment.An investigation to find the optimal parameters of the two biofilm systems was conducted on hydraulic loading,organic loading,and aeration rate.The results indicated that the water reuse criteria required a maximum hydraulic and organic loading of 30.0 m^(3)/(m^(2)·d)and 4.0 kg COD/(m^(3)·d),respectively,as well as a minimum effluent DO of 4.0 mg/L.The utilization of a new media allowed BAF to perform better than BCO.The kinetic description of the COD removal process for BAF and BCO are Se=S0e^(-0.639t)/(1+1.035t),and S_(e)=S_(0)/[(1+0.947t)(1+1.242t)],respectively.The correlativity analysis showed that the two models could predict the effluent water quality based on the hydraulic retention time.Thus,the appropriate hydraulic loading for certain effluent water quality demands could be determined.The two models could be applied to wastewater treatment practice.Guanglei QIU Liancheng XIANG Yonghui SONG Jianfeng PENG Ping ZENG Peng YUAN 2009Frontiers of Environmental Science & Engineering2009,3,4:4
4Single-cell transcriptomes of peripheral blood cells indicate and elucidate severity of COVID-19显示文摘The blood and immune system of coronavirus disease 2019(COVID-19)infected patients are dysfunctional,and numerous studies have been conducted to resolve their characteristics and pathogenic mechanisms.Nevertheless,the variations of immune responses along with disease severity have not been comprehensively documented.Here,we profiled the single-cell transcriptomes of 96,313 peripheral blood mononuclear cells(PBMCs)derived from 12 COVID-19 patients(including four moderate,four severe and four critical cases)and three healthy donors.We showed that proliferative CD8 effector T cells with declined immune functions and cytotoxicity accumulated in the critical stage.By contrast,the quantity of natural killer(NK)cells was significantly reduced,while they exhibited enhanced immune activities.Notably,a gradually attenuated responseto COVID-19 along with disease severity was observed in monocytes,in terms of cellular composition,transcriptional discrepancy and transcription factor regulatory network.Furthermore,we identified immune cell-type dependent cytokine signatures distinguishing the severity of COVID-19 patients.In addition,cell interactions between CD8 effector T/NK cells and monocytes mediated by inflammatory cytokines were enhanced in moderate and severe stages,but weakened in critical cases.Collectively,our work uncovers the cellular and molecular players underlying the disordered and heterogeneous immune responses associated with COVID-19 severity,which could provide valuable insights for the treatment of critical COVID-19 patients.Xiaowei Xie Xuelian Cheng Gaoxiang Wang Biao Zhang Mengyao Liu Liting Chen Hui Cheng Sha Hao Jianfeng Zhou Ping Zhu Tao Cheng 2021Science China(Life Sciences)2021,64,10:3
5Prostate cancer antigen 3 and genetic risk score as markers for the detection of prostate cancer in the Chinese population显示文摘Han-Min Wei Hai-Tao Chen Ping Wang Yi-Shuo Wu Rong Na Fang Liu Ji-Shan Sun De-Ke Jiang Da-Ru Lu Jianfeng Xu 2015Asian Journal of Andrology2015,17,1:3
6Determination of trace heavy metals in milk using an ionic liquid and bismuth oxide nanoparticles modified carbon paste electrode显示文摘A novel carbon composite electrode modified with bismuth oxide nanoparticles and the ionic liquid n-octylpyridinium hexafluorophosphate was fabricated and used to simultaneously determine cadmium and lead levels using square wave anodic stripping voltammetry.This electrode combines the unique advantages of nanomaterials and ionic liquid with the low cost and easy fabrication of the carbon composite electrode.Compared with the traditional binder based composite electrode,our electrode exhibited well-defined and separate stripping voltammetric peaks for cadmium and lead.Furthermore,the antifouling capacity of the bismuth film electrode was significantly improved by the ionic liquid.Under optimized conditions,the linear range of the composite electrode was from 3.0 to 30.0 μg L-1 for both metal ions with a detection limit of 0.15 μg L-1 for cadmium and 0.21 μg L-1 for lead.Trial milk sample analyses showed that the modified electrode was sensitive,reliable and effective for the determination of trace heavy metals,holding great promise for routine analysis applications.PING JianFeng WU Jian YING YiBin 2012Chinese Science Bulletin2012,57,15:2
7Promotion of cardiac differentiation of brown adipose derived stem cells by chitosan hydrogel for repair after myocardial infarction显示文摘Haibin Wang Jinxin Shi Yan Wang Yujing Yin Liman Wang Jianfeng Liu Zhiqiang Liu Cuimi Duan Ping Zhu Changyong Wang 2014Biomaterials2014,,:2
8Prognostic significance of X-ray cross-complementing gene 1 expression in gastric cancer显示文摘Objective: The aim of this study is to identify the prognostic significance of X-ray cross-complementing gene 1(XRCC1) in patients with gastric cancer undergoing surgery and platinum-based adjuvant chemotherapy.Methods: Immunohistochemistry(IHC) was used to evaluate XRCC1 protein expression profiles on surgical specimens of 612 gastric cancer patients. The relationship between XRCC1 expression and existing prognostic factors, platinum-based adjuvant chemotherapy, disease-free survival(DFS) and overall survival(OS) were analyzed.Results: Among 612 patients staged II/III in our study, 182(29.74%) were evaluated as XRCC1 IHC positive. XRCC1 expression was not significantly related to OS(P=0.347) or DFS(P=0.297). Compared with surgery only, platinum-based adjuvant chemotherapy significantly improved the OS(P=0.031). And the patients with negative XRCC1 expression benefited more from platinum-based adjuvant chemotherapy(P=0.049). Multivariate analysis demonstrated that tumor size, T category, N category, vascular or nerve invasion and platinum-based chemotherapy were good prognostic factors for OS(P<0.05). Though XRCC1 plays an important role in DNA repair pathways, no significant relationship is found in XRCC1 expression and OS among gastric cancer in our study.Conclusions: XRCC1 might be an alternative prognostic marker for the patients of gastric cancer after radical resection. The patients with negative XRCC1 expression can benefit more from platinum-based adjuvant chemotherapy.Jian Wang Tongshan Wang Jun Xu Xiao Li Wen Jiao Chen Wei Shi Jianfeng Cheng Ping Liu Xiqiao Zhou 2016Chinese Journal of Cancer Research2016,28,3:2
9Impedimetric immuno sensor based on gold nanoparticles modified graphenepaper for label- free detection of Eseherichiaeoli 0157 : H7显示文摘WANG Yixian PING Jianfeng 2013Biosensors and Bioelectronics2013,49,:1
10Study of power quality compensator in power system 显示文摘ZHAO Jianfeng JIANG Ping LI Naibu 1999IEEE PEDS1999,,:1
11Evaluation of trace heavy metal levels in soil samples using an ionic liquid modified carbon paste electrode 显示文摘Ping Jianfeng Wu Jian Ying Yibin 2011Journal of Agricultural and Food Chemistry2011,59,9:1
12A model for predicting temperature of electrofusion joints for polyethylene pipes显示文摘Shi Jianfeng Zheng Jinyang Guo Weican Xu Ping Qin Yongquan Zuo Shangzhi 0,,06:1
13All-solid-state nitrate- selective electrode and its application in drinking water 显示文摘Tang Wenzhi Ping Jianfeng Fan Kai 2012Electrochimica Acta2012,81,:1
14Degradation of biologically treated landfill leachate by using electrochemical process combined with UV irradiation显示文摘Shuhu Xiao Jianfeng Peng Yonghui Song Dongsheng Zhang Ruixia Liu Ping Zeng 2013Separation and Purification Technology2013,,:1
15An integrated and robust plant pulse monitoring system based on biomimetic wearable sensor显示文摘Plant wearable sensors have potential to provide continuous measurements of plant physiological information.However,stable and high-fidelity monitoring of plants with glandular hairs and wax is challenging,due to lacking interface adaptability of conventional plant wearable sensors.Here,inspired by adaptive winding plant tendrils,an integrated plant wearable system(IPWS)based on adaptive winding strain(AWS)sensor for plant pulse monitoring was developed.The IPWS consists of three modules,i.e.an AWS sensor,a flexible printed circuit,and a smart phone APP display interface.As the key element,the AWS sensor can adaptively wrap around the tomato stem.Importantly,with the serpentine-patterned laser-induced graphene,the AWS sensor exhibits excellent resistance to temperature interference with a temperature resistance coefficient of 0.17/℃.The IPWS is demonstrated to be stable and high-fidelity monitoring the plant pulse,which can reflect the growth and water state of tomato plant in real time.Chao Zhang Chi Zhang Xinyue Wu Jianfeng Ping Yibin Ying 2022npj Flexible Electronics2022,6,1:1
16Treatment of berberine hydrochloride wastewater by using pulse electro-coagulation process with Fe electrode显示文摘Meijie Ren Yonghui Song Shuhu Xiao Ping Zeng Jianfeng Peng 2011Chemical Engineering Journal2011,,1:1
17Study of power quality compensator in power system显示文摘Zhao Jianfeng Jiang Ping Li Naibu 1999IEEE PEDS1999,5155,:1
18A frequency domain reliability analysis method for electromagnetic problems based on univariate dimension reduction method显示文摘In this paper, a class of electromagnetic field frequency domain reliability problem is first defined. The frequency domain reliability refers to the probability that an electromagnetic performance indicator can meet the intended requirements within a specific frequency band, considering the uncertainty of structural parameters and frequency-variant electromagnetic parameters.And then a frequency domain reliability analysis method based on univariate dimension reduction method is proposed, which provides an effective calculation tool for electromagnetic frequency domain reliability. In electromagnetic problems, performance indicators usually vary with frequency. The method firstly discretizes the frequency-variant performance indicator function into a series of frequency points' functions, and then transforms the frequency domain reliability problem into a series system reliability problem of discrete frequency points' functions. Secondly, the univariate dimension reduction method is introduced to solve the probability distribution functions and correlation coefficients of discrete frequency points' functions in the system. Finally, according to the above calculation results, the series system reliability can be solved to obtain the frequency domain reliability, and the cumulative distribution function of the performance indicator can also be obtained. In this study,Monte Carlo simulation is adopted to demonstrate the validity of the frequency domain reliability analysis method. Three examples are investigated to demonstrate the accuracy and efficiency of the proposed method.PING MengHao HAN Xu JIANG Chao ZHONG JianFeng XIAO XiaoYa HUANG ZhiLiang WANG ZhongHua 2019Science China(Technological Sciences)2019,62,5:1
19Influence of Fiber Wettability on the Interracial Adhesion of Continuous Fiber - Reinforced PPESK Composite 显示文摘Ping Chen Chun Lu Qi Yu Yu Gao Jianfeng Li Xinglin Li 2006Journal of Applied Polymer Science2006,,102:1
20Plant-protein-enabled biodegradable triboelectric nanogenerator for sustainable agriculture显示文摘As the use of triboelectric nanogenerators(TENGs)increases,the generation of related electronic waste has been a major challenge.Therefore,the development of environmentally friendly,biodegradable,and low-cost TENGs must be prioritized.Having discovered that plant proteins,by-products of grain processing,possess excellent triboelectric properties,we explore these properties by evaluating the protein structure.The proteins are recycled to fabricate triboelectric layers,and the triboelectric series according to electrical properties is determined for the first time.Using a special structure design,we construct a plant-protein-enabled biodegradable TENG by integrating a polylactic acid film,which is used as a new type of mulch film to construct a growth-promoting system that generates space electric fields for agriculture.Thus,from the plant protein to the crop,a sustainable recycling loop is implemented.Using bean seedlings as a model to confirm the feasibility of the mulch film,we further use it in the cultivation of greenhouse vegetables.Experimental results demonstrate the applicability of the proposed plant-protein-enabled biodegradable TENG in sustainable agriculture.Chengmei Jiang Qi Zhang Chengxin He Chi Zhang Xiaohui Feng Xunjia Li Qiang Zhao Yibin Ying Jianfeng Ping 2022Fundamental Research2022,2,6:1
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