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| 1 | Rapid denudation of the Himalayan orogen in the Nyalam area,southern Tibet, since the Pliocene and implications for tectonics–climate coupling显示文摘The Himalayan orogen characterized by very high variability in tectonic and climatic processes,and is thus regarded as a natural laboratory for investigating the coupling of tectonics and climate,as well as the influence of this coupling on geomorphological processes.This study uses apatite fission track(AFT)dating of samples from a45-km-long section crossing the Great Himalaya Crystalline Complex(GHC)in the Nyalam area,southern Tibet,to constrain the timing and rate of late Cenozoic denudation.The AFT ages can be divided into two groups:(1)15–6 Ma,to the north of Nyalam town,for which the bestfit line of elevation-age has a gentle slope of 0.05,and for which a denudation rate of 0.27 mm/a is calculated;and(2)3–1 Ma,south of Nyalam town,for which the best-fit line has a steep slope of 0.64,and for which a denudation rate of 1.32 mm/a is calculated.The whole AFT ages has a positive correlation with sample elevation(i.e.,older ages are found at higher elevations),and the geographical location of the point of inflexion of the two fitted lines corresponds closely to the junction of Poqu River near Nyalam town.By integrating the AFT data with thermotectonic modeling,it can be inferred that the GHC has experienced two different periods of denudation:(1)slow denudation during middle to late Miocene(15–6 Ma)is recorded in the northern part of the GHC;and(2)rapid denudation from the Pliocene to the Pleistocene(3–1 Ma)is recorded in the southern part of the GHC.An abrupt change in denudation rate occurred between the two periods,with the Pliocene–Pleistocene denudation rate being five times higher than that during the Miocene.This abrupt change in denudation rate during Pliocene pervaded the Himalayan orogen,and was roughly synchronous with a marked change in global climate at 4–3 Ma,and intensification of the Asian monsoon.Importantly,the later period of rapid denudation in the study region closely coupled to the mean annual precipitation,while there is no clear evidence for large-scale faulting activity and associated uplift during this period.Therefore,climate(precipitation)is inferred to be the main cause of the rapid denudation of the Himalayan orogen since the Pliocene. | Yong Zheng Jinjiang Zhang Jiamin Wang Bo Zhang Xiaoxian Wang Meng Wang | 2014 | Chinese Science Bulletin2014，59，9： | 5 |
| 2 | Stoichiometric effect on electrical and near-infrared photodetection properties of full-composition-range GaAs1−xSbx nanowires显示文摘As one of the most important narrow bandgap ternary semiconductors, GaAs1−xSbx nanowires (NWs) have attracted extensive attention recently, due to the superior hole mobility and the tunable bandgap, which covers the whole near-infrared (NIR) region, for technological applications in next-generation high-performance electronics and NIR photodetection. However, it is still a challenge to the synthesis of high-quality GaAs1−xSbx NWs across the entire range of composition, resulting in the lack of correlation investigation among stoichiometry, microstructure, electronics, and NIR photodetection. Here, we demonstrate the success growth of high-quality GaAs1−xSbx NWs with full composition range by adopting a simple and low-cost surfactant-assisted solid source chemical vapor deposition method. All of the as-prepared NWs are uniform, smooth, and straight, without any phase segregation in all stoichiometric compositions. The lattice constants of each NW composition have been well correlated with the chemical stoichiometry and confirmed by high-resolution transmission electron microscopy, X-ray diffraction, and Raman spectrum. Moreover, with the increase of Sb concentration, the hole mobility of the as-fabricated field-effect-transistors and the responsivity and detectivity of the as-fabricated NIR photodetectors increase accordingly. All the results suggest a careful stoichiometric design is required for achieving optimal NW device performances. | Jiamin Sun Mingming Han Meng Peng Lei Zhang Dong Liu Chengcheng Miao Jiafu Ye Zhiyong Pang Longbing He Hailu Wang Qing Li Peng Wang Lin Wang Xiaoshuang Chen Chongxin Shan Litao Sun Weida Hu Zai-xing Yang | 2021 | Nano Research2021，14，11： | 1 |
| 3 | Determination of Volatile Constituents,Total Flavonoids and Total Polysaccharides in the Roots of Artemisia argyi Levl. et Van. var.argyi cv. Qiai显示文摘[Objectives] To analyze the volatile components,the contents of total flavonoids and total polysaccharides of the roots of Artemisia argyi Levl. et Van. var. argyi cv. Qiai,and to provide a scientific basis for the comprehensive development and utilization of the resources.[Methods]The volatile components of the roots were extracted by solid phase micro-extraction( SPME),and its volatile components were analyzed by gas chromatography-mass spectrometry( GC-MS); the contents of total flavonoids and total polysaccharides in the samples were measured by UV-spectrophotometry. [Results] 44 peaks were isolated from the roots and 30 components were identified,accounting for 80. 9% of the total volatile components; the content of total flavonoids in the roots was 9. 42%; the content of total polysaccharides in the roots was 11. 05%.[Conclusions] After a comprehensive investigation,the olefins in the roots generally have antibacterial activity,the contents of the total flavonoids and total polysaccharides contained in the roots were relatively high,the roots of Artemisia argyi do have broad prospects for the development. | Min GONG Jinqing LU Yushuo XIAO Jiamin MENG Jingling HUANG Mengfei LIU Jiaxuan XIA Yi ZHOU | 2017 | Medicinal Plant2017，8，6： | 1 |
| 4 | Experimental study of the hydrodynamic trajectory of an X-ray-heated gold plasma显示文摘 | Yang Jiamin Meng Guangwei Zhu Tuo | 2010 | Phys Plasmas2010，17，06： | 1 |
| 5 | Content Determination of Kaempferol,Jaceosidin and Eupatilin in the Moxa Roll and Moxa Cone from Different Producing Areas by HPLC显示文摘[Objectives] To determine the content of main active flavonoids in the moxa roll and moxa cone from different producing areas and provide a reference for the quality control of finished moxa roll and moxa cone. [Methods]Using HPLC,with kaempferol,jaceosidin and eupatilin as reference substance,there comparative analysis was done on the content of kaempferol,jaceosidin and eupatilin in the moxa roll and moxa cone from different producing areas. [Results]11 lots of samples contained kaempferol,jaceosidin and eupatilin,but the content differed significantly. [Conclusions] There was a large difference in the content of three kinds of flavonoids in the moxa roll and moxa cone from different producing areas,and the study provided a reference for the quality evaluation and quality control of moxa roll and moxa cone. | Li CAO Jinqing LU Xin YE Jiamin MENG | 2017 | Medicinal Plant2017，8，5： | 0 |
| 6 | Analysis of Volatile Components in Different Parts of Polygala japonica Houtt.显示文摘[Objectives] To analyze the volatile components in different parts of Polygala japonica Houtt. and compare the differences of these volatile components. [Methods] The volatile components in different parts of P. japonica Houtt. were analyzed by the headspace solid-phase microextraction( HS-SPME) combined with GC-MS,and the relative percentage of each component was determined by peak area normalization. [Results] Thirty kinds of volatile components were identified from the leaves and rhizomes of P. japonica Houtt.,mainly including olefins,aromatic hydrocarbons,alkanes and esters. [Conclusions] The volatile components in different parts of P. japonica Houtt. were different,and there may be difference in the medicinal value of volatile components in different parts,thus it is required to take an overall consideration of these differences in the development and utilization of P. japonica Houtt. | Yushuo XIAO Jinqing LU Jiamin MENG Li CAO | 2018 | Medicinal Plant2018，9，1： | 0 |
| 7 | Preliminary Study on HPLC Fingerprint of Thlaspi arvense L.显示文摘[Objectives] To establish Thlaspi arvense L. HPLC fingerprints,to provide reference for quality evaluation Thlaspi arvense L.[Methods]HPLC chromatography was used,HPLC column Acclaim~ 120C_(18)( 250 mm × 3. 0 mm,5 μm),mobile phase of acetonitrile-0. 2% phosphoric acid aqueous solution gradient elution,flow rate of 0. 7 m L/min,column temperature of 30 ℃,detection wavelength of 320nm; the chromatographic fingerprint similarity evaluation software( Version 2004 A) was used for similarity evaluation and data processing on 10 origin Thlaspi arvense L. spectra,and the median method was used to generate control Thlaspi arvense L. fingerprint. [Results] The similarity of 10 origin Thlaspi arvense L. spectra was greater than 0. 90,19 common peaks were separated from different origin Thlaspi arvense L. and isovitexin,apigenin,luteolin and acacetin were identified. [Conclusions] The established HPLC fingerprint contained a lot of information and showed good specificity for Thlaspi arvense L.,which can provide a scientific basis for Thlaspi arvense L. quality evaluation system. | Jiamin MENG Hanmei JIANG Jinqing LU Kun ZHOU Yushuo XIAO | 2017 | Medicinal Plant2017，8，4： | 0 |
| 8 | Design aspects of transmission voltage superconducting fault current limiters with YBCO tapes in China显示文摘The design progress of superconducting fault current limiter(SFCL)for transmission voltage is presented,with a focus on the results of recent key experiments that have led to a state‐of‐the‐art high‐voltage high‐capacity super‐conducting current limiting techniques:the resistive alternating current(AC)SFCL,saturated iron cores AC SFCL,and resistive direct current(DC)SFCL.The main driving factors for designing SFCL in these projects are the preparation of high‐performance superconducting materials,the development of large‐scale superconducting current limiting winding,system testing,and operation technology.Based on the authors’experience with both AC and DC SFCLs,this paper focuses on the main design aspects of resistive SFCL at transmission voltage.The relationship between the hot spot caused by the inhomogeneity of long superconducting tape and the overall parameter selection is presented.In addition,the thermal calculation based on the current limiting resistance and a real‐time current curve is also proposed for the parameter design of the current limiting winding. | Tao Ma Shaotao Dai Meng Song Jiamin Zhu Jing Zhang | 2022 | Superconductivity2022，，4： | 0 |
| 9 | The roles of macrophage migration inhibitory factor in retinal diseases显示文摘Macrophage migration inhibitory factor(MIF),a multifunctional cytokine,is secreted by various cells and participates in inflammatory reactions,including innate and adaptive immunity.There are some evidences that MIF is involved in many vitreoretinal diseases.For example,MIF can exacerbate many types of uveitis;measurements of MIF levels can be used to monitor the effectiveness of uveitis treatment.MIF also alleviates trauma-induced and glaucoma-induced optic nerve damage.Furthermore,MIF is critical for retinal/choroidal neovascularization,especially complex neovascularization.MIF exacerbates retinal degeneration;thus,anti-MIF therapy may help to mitigate retinal degeneration.MIF protects uveal melanoma from attacks by natural killer cells.The mechanism underlying the effects of MIF in these diseases has been demonstrated:it binds to cluster of differentiation 74,inhibits the c-Jun N-terminal kinase pathway,and triggers mitogen-activated protein kinases,extracellular signal-regulated kinase-1/2,and the phosphoinositide-3-kinase/Akt pathway.MIF also upregulates Toll-like receptor 4 and activates the nuclear factor kappa-B signaling pathway.This review focuses on the structure and function of MIF and its receptors,including the effects of MIF on uveal inflammation,retinal degeneration,optic neuropathy,retinal/choroidal neovascularization,and uveal melanoma. | Hongbing Zhang Xianjiao Zhang Hongsong Li Bing Wang Pei Chen Jiamin Meng | 2024 | Neural Regeneration Research2024，19，2： | 0 |
| 10 | Theoretical investigations on x-ray transport in radiation transport experiments on the Shenguang-Ⅲ prototype laser facility显示文摘Experiments exploring the propagation of heat waves within cylindrical CH foams were performed on the Shenguang-Ⅲ prototype laser facility in 2012.In this paper,the radiation fluxes out of CH foam cylinders at different angles are analyzed theoretically using the two-dimensional radiation hydrodynamics code LARED-R.Owing to the difficulty in validating opacity and equation of state(EOS)data for high-Z plasmas,and to uncertainties in the measured radiation temperature Tr and the original foam densityρ0,multipliers are introduced to adjust the Au material parameters,Tr,andρ0 in our simulations to better explain the measurements.The dependences of the peak radiation flux Fmax and the breakout time of the heat wave thalf(defined as the time corresponding to the radiation flux at half-maximum)on the radiation source,opacity,EOS,andρ0 scaling factors(η_(src),η_(op),η_(eos),and η_(ρ))are investigated via numerical simulations combined with fitting.Then,with the uncertainties in the measured Tr andρ0 fixed at 3.6%and 3.1%,respectively,experimental data are exploited as fiducial values to determine the ranges ofη_(op) andηeos.It is found that the ranges ofη_(op) andηeos fixed by this experiment overlap partially with those found in our previous work[Meng et al.,Phys.Plasmas 20,092704(2013)].Based on the scaled opacity and EOS parameters,the values of F_(max) and t_(half) obtained via simulations are in good agreement with the measurements,with maximum errors∼9.5%and within 100 ps,respectively. | Guangwei Meng Jun She Tianming Song Jiamin Yang Min Wang | 2022 | Matter and Radiation at Extremes2022，7，2： | 0 |
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