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14篇 您的检索式:作者名="XUAN Haifeng"
    题名 作者 年代 出处 被引量
1Programmable metallization cells based on amorphous La 0.79 Sr 0.21 MnO 3 thin films for memory applications显示文摘Dongqing Liu Nannan Wang Guang Wang Zhengzheng Shao Xuan Zhu Chaoyang Zhang Haifeng Cheng 2013Journal of Alloys and Compounds2013,,:1
2The development of low-carbon vehicles in China 显示文摘Yao Mingfa Liu Haifeng Feng Xuan 2011Energy Policy2011,39,9:1
3The development of lowcarbon vehicles in China显示文摘Mingfa Yao Haifeng Liu Xuan Feng 2011Energy Policy2011,39,9:1
4CO2 laser in- duced long period gratings in optical microfibers显示文摘Xuan Haifeng Jin Wei Zhang Min 2009Optics Express2009,17,21:1
5The Develop-ment of Low-carbon Vehicles in China显示文摘Mingfa Yao Haifeng Liu Xuan Feng 2011Energy Pol-icy2011,39,9:1
6The development of low-carbon vehicles in China显示文摘Yao Mingfa Liu Haifeng Feng Xuan 0,,09:1
7Molecular wakes for ultrashort laser pulses显示文摘The molecular wake-assisted interaction between two collinear femotosecond laser pulses is investigated in air,which leads to the generation of a controllable 1.8 mJ super-continuum pulse with an elongated self-guided channel due to the cross-phase modulation of the impulsively aligned diatomic molecules in air. For two parallel launched femtosecond laser pulses with a certain spatial separation,controllable attraction and repulsion of the pulses are observed due to the counter-balance among molecular wakes,Kerr and plasma effects,where the molecular wakes show a longer interaction distance than the others to control the propagation of the intense ultrashort laser pulses.CAI Hua,WU Jian,LU PeiFen,TONG YuQi,YANG Xuan,BAI XueShi,LI Hao,PAN HaiFeng & ZENG HePing State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200062,China 2010Science China(Physics,Mechanics & Astronomy)2010,53,6:1
8Fiber-optic Fabry- Perot acoustic sensor with multilayer graphene diaphragm 显示文摘MA Jun XUAN Haifeng HO H 2013IEEE Photonics Technol Lett2013,25,10:1
9A facile meth- od for preparation of gold nanoparticles with high SERS efficiency ha the presence of haositol hexaphos- phate显示文摘Zhu Xuan Yanf Haifeng Wang Na 2010Journal of Colloid and Interface Science2010,342,2:1
10Licochalcone A inhibiting proliferation of bladder cancer T24 cells by inducing reactive oxygen species production显示文摘Feng Liu Ali Goodarzi Haifeng Wang Joanna Stasiak Jianbo Sun Yu Zhou Jiangtao Jiang Xuan Yuan Hong Zhao Xinyan Yan Xiling Sun Qiusheng Zheng 2014Bio-Medical Materials and Engineering2014,,1:1
11Distribution,ecology,and oxygen and carbon isotope characteristics of modern planktonic foraminifers in the Makarov Basin of the Arctic Ocean显示文摘The Arctic region, with magnificent ice cover on the surface of the Arctic Ocean and adjacent seas, is not only extremely sensitive to but also has strong amplification effects on climate change. Observations during the past decades have documented substantial retreat and thinning of the Arctic sea-ice cover, a process that is accelerating. Its feedback and impact on the global climate has become an important subject of current climate change research. Calcite tests of planktonic foraminifers are major constituents in pelagic sediments, and they provide valuable materials for the reconstruction of past oceanographic conditions. However, research is still sparse in the Arctic sea area because of limited availability of the materials for investigation. Here, we present a study of modern foraminifers from the plankton tow samples taken in the Makarov Basin of the Arctic Ocean during the fourth Arctic expedition of China. We have analyzed ecological information stored in the modern planktonic foraminifers and in their stable isotope signals, and established a relationship between the distribution of the main taxa and the environment. Our main observations are as follows:(1) in the Makarov Basin, the polar species Neogloboquadrina pachyderma(sinistral coiling) dominates the [150 lm planktonic foraminiferal assemblages.(2) The planktonic foraminifers live mainly in the upper halocline at a water depth of 50–100 m and less in the depth interval of 100–200 m.(3) Temperature change in the halocline can affect the absolute abundance of planktonic foraminifers and their distribution in the water column. The warmer halocline is more favorable to the development of planktonic foraminifers.(4) A lighter d18O value(2.11 %) of N. pachyderma(sin.) is recorded in the depth interval of 100–200 m, which is likely related to the isotopically light brines separated out during sea ice freezing. The relatively heavy d18O value(1.68 %–2.68 %, average 2.27 %) in the depth interval of 50–100 m may be influenced by the low salinity water with the relatively heavy d18O value formed during the sea-ice melting in the surface layer.Xuan Ding Rujian Wang Haifeng Zhang Zhencheng Tao 2014Chinese Science Bulletin2014,59,7:0
12Highly stretchable,conductive,and wide-operating temperature ionogel based wearable triboelectric nanogenerator显示文摘The rapid development of wearable electronic products brings challenges to corresponding power supplies.In this work,a thermally stable and stretchable ionogel-based triboelectric nanogenerator(SI-TENG)for biomechanical energy collection is proposed.The ionic conductivity of the ionogel increased to 0.53 S·m^(−1) through optimal regulation of the amount of aminoterminated hyperbranched polyamide(NH2-HBP),which also has high strain of 812%,excellent stretch recovery,and wide operating temperature range of−80 to 250°C.The SI-TENG with this ionogel as electrode and silicone rubber both as the triboelectric layer and encapsulation layer exhibits high temperature stability,stretchability,and washability.By adding appropriate amount of nano SiO2 to triboelectric layer,the output performance is further improved by 93%.Operating in singleelectrode mode at 1.5 Hz,the outputs of a SI-TENG with an area of 3 cm×3 cm are 247 V,11.7μA,78 nC,and 3.2 W·m^(−2),respectively.It was used as a self-charging power supply to charge a 22μF capacitor to 1.6 V in 167 s with the palm patting and then to power the electronic calculator.Furthermore,the SI-TENG can also be used as a self-powered motion sensor to detect the amplitude and frequency of finger bending,human swallowing,nodding,and shaking of the head motion changes through the analysis of the output voltage.Qianqian Zhu Weiqiang Liao Cong Sun Xuan Qin Fangjia Zhang Haifeng Ji Yuqi Li Zhen Wen Xuhui Sun 2023Nano Research2023,16,9:0
13Cooperative control of perpendicular magnetic anisotropy via crystal structure and orientation in freestanding SrRuO_(3)membranes显示文摘Flexible magnetic materials with robust and controllable perpendicular magnetic anisotropy(PMA)are highly desirable for developing flexible high-performance spintronic devices.However,it is still challenge to fabricate PMA films on polymers directly.Here,we report a facile method for synthesizing single-crystal freestanding SrRuO_(3) membranes with controlled crystal structure and orientation using water-soluble Ca_(3-x)Sr_(x)Al_(2)O_(3)6 sacrificial layers.Through cooperative effect of crystal structure and orientation,flexible membranes reveal highly tunable magnetic anisotropy from in-plane to out-of-plane with a remarkable PMA energy of 7×10^(6) erg·cm^(−3).First-principle calculations reveal that the underlying mechanism of PMA modulation is intimately correlated with structure-controlled Ru 4d-orbital occupation,as well as spin-orbital matrix element differences,dependent on the crystal orientation.In addition,even after 10,000 bending cycles,the PMA keeps stable,indicating a robust magnetism reliability in the prepared films.This work provides a feasible approach to prepare the flexible oxide films with strong and controllable PMA.Zengxing Lu Yongjie Yang Lijie Wen Jiatai Feng Bin Lao Xuan Zheng Sheng Li Kenan Zhao Bingshan Cao Zeliang Ren Dongsheng Song Haifeng Du Yuanyuan Guo Zhicheng Zhong Xianfeng Hao Zhiming Wang Run-Wei Li 2022npj Flexible Electronics2022,6,1:0
14Propionate stimulates the secretion of satiety hormones and reduces acute appetite in a cecal fistula pig model显示文摘Short-chain fatty acids(SCFA)can regulate appetite by stimulating the secretion of satiety hormones.However,the impact of short-chain fatty acid propionate on the release of gut satiety hormones and appetite regulation in pigs is not completely understood.In this study,16 pigs were infused with saline or sodium propionate through a fistula in the caecum during a 28-day experimental period.We characterized the effects of propionate administration on peptide YY(PYY)and glucagon-like peptide 1(GLP-1)secretion from colonic tissue,and investigated the role of propionate infusion on the expression of appetite-related genes in the colon and hypothalamus.Further,the direct impact of propionate administration on the expression of orexigenic neuropeptide agouti-related protein(AgRP)in hypothalamic N38 cells was also examined.The results showed that intra-cecal infusion of propionate reduced the short-term feed intake(P<0.05)but not the long-term feed intake in pigs(P>0.05).Propionate administration stimulated PYY and GLP-1 release from colon tissue in vivo and ex vivo(P<0.05).It also upregulated PYY expression in the colonic mucosa(P<0.05).Meanwhile,the GLP-1 and PYY levels in the blood were increased after intra-cecal infusion of propionate at d 28(P<0.05).Additionally,intra-cecal infusion of propionate upregulated the mRNA and protein expression of free fatty acid receptor 2/3(FFAR2/FFAR3)in the colonic mucosa(P<0.05).Propionate infusion also downregulated the orexigenic AgRP mRNA expression(P<0.05)and upregulated the anorexigenic cocaine-and amphetamine-regulated transcript(CART)mRNA expression(P=0.09)in the hypothalamus.Moreover,propionate administration directly downregulated AgRP expression in hypothalamic N38 cells in a dose-dependent manner(P<0.05).Collectively,these findings demonstrated that cecal propionate stimulated colonic secretion of satiety hormones and suppressed appetite to reduce the short-term feed intake in pigs.This study highlights that microbial-derived propionate exerts an important role in regulating the physical functions of the host.Yanan Zhang Xuan Li Guowen Huang Haifeng Wang Huizi Chen Yong Su Kaifan Yu Weiyun Zhu 2022Animal Nutrition2022,,3:0
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