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32篇 您的检索式:作者名="Cheng Nian"
    题名 作者 年代 出处 被引量
1Transurethral seminal vesiculoscopy for recurrent hemospermia: experience from 419 cases显示文摘Rui Chen Lei Wang Xia Sheng Shu-Guang Piao Xin-Wen Nian Xin Cheng Tie Zhou Hui-Zhen Li Ya-Wei Liu Guang-Hua Chen Chun-Lei Zhang De-Pei Kong Guang-An Xiao Xin Lu Zhen-Yu Jia Zhi-Yong Liu Ying-Hao Sun 2018Asian Journal of Andrology2018,20,5:18
2Psychophysiological Effects of Bamboo Plants on Adults显示文摘The present study was conducted to clarify the psychophysiological relaxation effects of viewing bamboo on university students. Forty healthy Chinese participants enrolled in this study to clarify the psychophysiological relaxation effects of viewing bamboo. The effects of visual stimulation using a pot both with and without a bamboo were recorded by measuring the student's blood pressure, EEG and STAI. We observed that viewing bamboo plants resulted in significantly lower systolic(female, P < 0.001; male, P < 0.001; P < 0.05) and diastolic(female,P < 0.001; male, P < 0.001; P < 0.05) blood pressures, but no changes in the pulse rate(female, P = 0.09; male, P = 0.07; P > 0.05) were observed. The results of the EEG analysis indicated brainwave variation(all P < 0.05) and lower anxiety scores(P < 0.01) after 3 min of viewing bamboo compared with the control. These findings indicate that visual stimulation with bamboo plants induced psychophysiological relaxation effects on adults.Ahmad Hassan CHEN Qi Bing JIANG Tao LYU Bing Yang LI Nian LI Shu SHANGGUAN Zi Yue LI Yun Ting JUN Zhou Li LUO Qian CHEN Xin Yi WANG Yi Yan ZENG Cheng Cheng YANG Jun Muhammad Sohaib Tahir 2017Biomedical and Environmental Sciences2017,30,11:8
3Tribological evaluation of environmentally friendly ionic liquids derived from renewable biomaterials显示文摘Unlike most of the conventional ionic liquids(ILs) derived from non-renewable resources, five environmentally friendly ILs([Ch][AA] ILs) derived from amino acids(AAs) and choline(Ch) were synthesized using biomaterials by a simple, green route: acid–base reaction of Ch and AAs. The thermal and corrosion properties, as well as viscosity, of the prepared ILs were examined. The results revealed that the anion structure of ILs plays a dominant role in their thermal and viscosity behavior. These ILs exhibited less corrosion toward copper, related to their halogen-, sulfur-, and phosphorus-free characteristics. The tribological behavior of the synthesized ILs was examined using a Schwingungs Reibung und Verschleiss tester, and the results indicated that these ILs exhibit good friction-reducing and anti-wear properties as lubricants for steel/steel contact. Results from energy-dispersive spectroscopy and X-ray photoelectron spectroscopy indicated that the good tribological properties of [Ch][AA] ILs are related to the formation of a physically adsorbed film on the metal surface during friction.Cheng JIANG Weimin LI Jingyan NIAN Wenjing LOU Xiaobo WANG 2018Friction2018,6,2:7
4Sex-specific and Dose-response Relationship between the Incidence of Gallstones and Components of the Metabolic Syndrome in Jinchang Cohort:A Prospective Study显示文摘Gallstones is a very common gastrointestinal disease,involving the formation of masses in the gall bladder or biliary tract,due to abnormally high concentrations of cholesterol or bilirubin in the bile[1].There is a 10%–20%prevalence of gallstones worldwide,and>20%of patients with gallstones show clinical symptoms,implying a substantial disease burden[1].YANG Jing Li HUANG Jun Jun CHENG Ning ZHANG De Sheng LIU Si Min HUANG Wen Ya LI Na HUANG Pei Yao DING Jiao LIU Nian BAO Kai Fang DING Jie CHEN Xiao Liang ZHENG Tong Zhang BAI Ya Na 2020Biomedical and Environmental Sciences2020,33,8:4
5Improved catalytic performance of Ni catalysts for steam methane reforming in a micro-channel reactor显示文摘Milliseconds process to produce hydrogen by steam methane reforming(SMR) reaction, based on Ni catalyst rather than noble catalyst such as Pd, Rh or Ru, in micro-channel reactors has been paid more and more attentions in recent years. This work aimed to further improve the catalytic performance of nickel-based catalyst by the introduction of additives, i.e., MgO and FeO, prepared by impregnation method on the micro-channels made of metal-ceramic complex substrate. The prepared catalysts were tested in the same micro-channel reactor by switching the catalyst plates. The results showed that among the tested catalysts Ni-Mg catalyst had the highest activity, especially under harsh conditions,i.e., at high space velocity and/or low reaction temperature. Moreover, the catalyst activity and selectivity were stable during the 12 h on stream test even when the ratio of steam to carbon(S/C) was as low as 1.0. The addition of MgO promoted the active Ni species to have a good dispersion on the substrate, leading to a better catalytic performance for SMR reaction.Bozhao Chu Nian Zhang Xuli Zhai Xin Chen Yi Cheng 2014Journal of Energy Chemistry2014,23,5:4
624小时食管多通道腔内阻抗-pH监测阳性的113例胃食管反流病(GERD)患者的胃食管反流特点(英文)显示文摘目的:通过分析多通道腔内阻抗-pH监测(MII-pH)阳性的胃食管反流病(GERD)患者的各项反流指标,探讨我国GERD患者的胃食管反流特点,以及性别、年龄、体位和体质指数(BMI)对反流的影响。创新点:入组患者均经MII-pH监测证实具有客观存在的胃食管反流,分析体位和BMI对反流的影响,并且发现我国GERD患者普遍存在弱酸反流。方法:有典型反流症状的疑诊GERD患者,进行24 h MII-pH监测,对监测结果阳性的患者纳入研究对象,分析其各反流指标以及性别、年龄、体位和BMI对反流的影响。结论:我国GERD患者普遍存在弱酸反流,男性、直立体位、肥胖(BMI≥25)可促进胃食管反流的发生,且年龄不是胃食管反流的危险因素。Yuan-yuan NIAN Cheng FENG Fu-chun JING Xue-qin WANG Jun ZHANG 2015Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2015,16,9:3
7Real time bipolar time-of-flight mass spectrometer for analyzing single aerosol particles显示文摘Lei Li Zhengxu Huang Junguo Dong Mei Li Wei Gao Huiqing Nian Zhong Fu Guohua Zhang Xinhui Bi Ping Cheng Zhen Zhou 2011International Journal of Mass Spectrometry2011,,2:2
8Role of intracellular calcium in contraction of internal anal sphincter显示文摘INTRODUCTIONInternalanalsphincter(IAS)isacontinuationofthesmoothcircularmusclelayerthickenedattherectum,innervatedbyvegetativ...NIU Wei Xin 1, QIN Xin Yu 1, LU Ying Qing 2, SHI Nian Ci 2 and WANG Cheng Pei 1 1999World Journal of Gastroenterology1999,5,2:2
9Tupisteroide A–C, three new polyhydroxylated steroidal constituents from the roots of Tupistra chinensis显示文摘Cheng‐XiongLiu Zhi‐yongGuo Yan‐HongXue Hong‐YanZhang Hong‐QiZhang KunZou Nian‐YuHuang 2012Magn Reson Chem2012,,4:1
10Synthetic derivatives of spiromesifen and their bioactivity research显示文摘spiromesifen 的十六新衍生物从 3-(2,4,6-trimethylphenyl ) 被综合 -4-hydroxy-Δ3-dihydrofuran-2-one。他们对有菱形斑纹的蛾(Plutella xylostella ) 和蜘蛛螨(Tetranychus cinnabarinus ) 的简历活动也被评估。这些衍生物的结构被 1 H NMR, MS。Jin Hao Zhao Ming Hua Ji Xu Hui Xu Jing Li Cheng Guo Nian Zhu 2009Chinese Chemical Letters2009,20,11:1
11Photoelectrochemical oxidation behavior of organic substnces on TiO2 thinfilm electrodes显示文摘Mou Cheng Li Jia Nian Shen 2006Solid State Electrochem2006,,10:1
12Real time bipolar time-of-flight mass spectrometer for analyzing single aerosol particles显示文摘Lei Li Zhengxu Huang Junguo Dong Mei Li Wei Gao Huiqing Nian Zhong Fu Guohua Zhang Xinhui Bi Ping Cheng Zhen Zhou 2011International Journal of Mass Spectrometry2011,,2:1
13STAT3 is involved in miR - 124 - mediated suppressive effeets on esophageal eaneer cells显示文摘CHENG Y LI Y NIAN Y 2015BMC Cancer2015,15,:1
14Collaborative control of DFIG system during network unbalance using reduced-order generalized integrators显示文摘Cheng P Nian H 2015IEEE Transactions on Energy Conversion2015,30,2:1
15Relative phase noise induced impairment in M - ary phase - shift - keying eoherent optical communication system using distributed fiber Raman amplifier 显示文摘Jing chi Cheng Ming Tang Song nian Fu 2013OPTICS LETFERS2013,38,7:1
16肝肠循环因子FGF15/19调节胆汁酸代谢从而控制肝脏尺寸大小与肝癌发生显示文摘文章简介肝脏是人体的一个重要代谢器官,它的大小相对于整个个体大小始终维持在一个合适的比例。肝脏如何感知生长起始和停止是肝脏发育、再生以及癌症生物学中一个有待解决的基本科学问题。近年来研究发现,Hippo信号通路在从果蝇到哺乳动物个体的器官发育及大小调控中都起着至关重要的作用。然而具体何种外部因子在调控Hippo信号通路来维持肝脏大小稳态及抑制癌症发生,一直是领域内未解决的问题。姬素渊 刘清许 张世浩 陈青花 王聪 Weiji Zhang Chen Xiao Yuxi Li Cheng Nian Jiaxin Li Junhong Li Jing Geng Lixin Hong Changchuan Xie Ying He Xing Chen Xun Li Zhen-Yu Yin Han You Kwang-Huei Lin Qiao Wu Chundong Yu Randy L.Johnson Li Wang Lanfen Chen Fen Wang 周大旺 2020科学新闻2020,,2:1
17Study on the effect of wellbore heat capacity on steam injection well heat loss显示文摘Yong-Le Nian Wen-Long Cheng Tong-Tong Li Chang-Long Wang 2014Applied Thermal Engineering2014,,1:1
18Evaluation ofworking fluids for geothermal power generation from aban-doned oil wells显示文摘CHENG W L LI T T NIAN Y L 2014Applied Energy2014,118,118:1
19Multi-chain Fudan-CCDC model for COVID-19—a revisit to Singapore's case显示文摘Background:COVID-19 has been impacting on the whole world critically and constantly since late December 2019.Rapidly increasing infections has raised intense worldwide attention.How to model the evolution of COVID-19 effectively and efficiently is of great significance for prevention and control.Methods:We propose the multi-chain Fudan-CCDC model based on the original single-chain model in[Shao et al.2020]to describe the evolution of COVID-19 in Singapore.Multi-chains can be considered as the superposition of several single chains with different characteristics.We identify the parameters of models by minimizing the penalty function.Results:The numerical simulation results exhibit the multi-chain model performs well on data fitting.Though unsteady the increments are,they could still fall within the range of±30%fluctuation from simulation results.Conclusion:The multi-chain Fudan-CCDC model provides an effective way to early detect the appearance of imported infectors and super spreaders and forecast a second outbreak.It can also explain the data from those countries where the single-chain model shows deviation from the data.Hanshuang Pan Nian Shao Yue Yan Xinyue Luo Shufen Wang Ling Ye Jin Cheng Wenbin Chen 2020Quantitative Biology2020,8,4:1
20Improved three-vector based dead-beat model predictive direct power control strategy for grid-connected inverters显示文摘Since only one inverter voltage vector is applied during each duty cycle, traditional model predictive direct power control(MPDPC) for grid-connected inverters(GCIs) results in serious harmonics in current and power. Moreover, a high sampling frequency is needed to ensure satisfactory steady-state performance, which is contradictory to its long execution time due to the iterative prediction calculations. To solve these problems, a novel dead-beat MPDPC strategy is proposed, using two active inverter voltage vectors and one zero inverter voltage vector during each duty cycle. Adoption of three inverter vectors ensures a constant switching frequency. Thus, smooth steady-state performance of both current and power can be obtained. Unlike the traditional three-vector based MPDPC strategy, the proposed three vectors are selected based on the power errors rather than the sector where the grid voltage vector is located, which ensures that the duration times of the selected vectors are positive all the time. Iterative calculations of the cost function in traditional predictive control are also removed, which makes the proposed strategy easy to implement on digital signal processors(DSPs) for industrial applications. Results of experiments based on a 1 kW inverter setup validate the feasibility of the proposed three-vector based dead-beat MPDPC strategy.Chen-wen CHENG Heng NIAN Long-qi LI 2018Frontiers of Information Technology & Electronic Engineering2018,19,11:0
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