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New Inorganic-organic Hybrid Compound Containing One Dimensional Keggin Polyoxometalate [SiW_(11)O_(39)Co]^(6-) Chains: Preparation, Characterization and Application in Chemically Bulk-modified Electrode

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Chemical Research in Chinese Universities 2008年第2期24卷 129-134页

作者： WANG Xiu-li lin Hong-yan liUGuo-cheng CHEN Bao-kuan BI yan-feng Faculty of Chemistry and Chemical Engineering Bohai University Liaoning Key Laboratry of Applied Chemistry Jinzhou 121000 P. R. China

A new inorganic-organic hybrid compound based on polyoxometalate and organic ligand formulated as （H2bpp）3[SiWliO39Co]-2H20（1）[bpp=l,3-bis（4-pyridyl）propane] was hydrothermally synthesized and structurally characterized by elemental analysis, single-crystal X-ray diffraction, IR, TG, and cyclic voltammetry. Single-crystal X-ray diffraction analysis reveals that compound 1 consists of interesting cobalt-monosubstituted POMs one dimensional chain together with protonated bpp ligands. Additionally, the polyoxoanions combined with the discrete organic substrates by hydrogen bond interactions to afford a supramolecular 3D network structure. The hybrid compound 1 was used as a bulk modifier to fabricate a three-dimensional chemically modified carbon paste electrode（1-CPE） by direct mixing. The electrochemical behavior and electrocatalysis of 1-CPE were studied in detail. The results indicate that 1-CPE has good electrocatalytic activities toward the reduction of nitrite or bromate in 1 mol/L 1-12SO4 aqueous solution. 1-CPE shows remarkable stability that can be ascribed to the insolubility of compound 1 and the supramolecular interactions existed between 1D POM anion chains and organic ligand bpp, which is very important for practical applications in electrode modification.

关键词： Inorganic-organic hybrid Polyoxometalate Electrochemistry Carbon paste electrode Electrocatalysis

The Time and Energy Dependence of the Vela Pulsar's Pulse Profile inγ-Ray

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Research in Astronomy and Astrophysics 2022年第4期22卷 128-136页

作者： lin-li yan Ming-Yu Ge You-li Tuo ling-jun Wang Qing-yong Zhou School of Mathematics and Physics Anhui Jianzhu UniversityHefeiAnhui 230601China Key Laboratory of Architectural Acoustics Environment of Anhui High Education Institutes HefeiAnhui 230601China Key Laboratory of Advanced Electronic Materials and Devices Anhui Jianzhu UniversityHefeiAnhui 230601China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China State Key Laboratory of Geographic Information Engineering Xi'an Institute of Surveying and MappingXi'an 710054China

We analyze the time and energy dependence of the Vela pulsar’s pulse profile using 13 yr observations from the Large Area Telescope on the Fermi Gamma-ray Space *** is found that the pulse profile of the Vela pulsar inγ-ray changes with *** parameterize the pulse profile and find that different shape parameters show fiuctuations rather than gradual changes with ***,these time variation trends are insignificant due to limited *** pulse profile of the Vela pulsar displays clear energy dependence inγ-*** shape parameters are accurately obtained or updated,especially the phase separations among different *** energy evolution trends are quantified for the first time,which will provide restrictions on currentγ-ray emission *** the Vela pulsar,we also find a turning point at *** and after this phase,the relative intensity of the pulse profile evolves with energy with the opposite trend.

关键词： stars:neutron (stars:)pulsars:individual(Vela) gamma-rays:stars Pulsars(1306) Gamma-ray sources(633)

Influence of lactic acid bacteria, cellulase, cellulase-producing Bacillus pumilus and their combinations on alfalfa silage quality

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Journal of Integrative Agriculture 2018年第12期17卷 2768-2782页

作者： li Dong-xia NI Kui-kui ZHANG Ying-chao lin yan-li yanG Fu-yu College of Animal Science and Technology China Agricultural UniversityBeijing 100193P.R.China Beijing Sure Academy of Biosciences Beijing 100085P.R.China

This study assessed the effects of lactic acid bacteria(LAB), cellulase, cellulase-producing Bacillus pumilus and their combinations on the fermentation characteristics, chemical composition, bacterial community and in vitro digestibility of alfalfa silage. A completely randomized design involving a 8(silage additives)×3 or 2(silage days) factorial arrangement of treatments was adopted in the present study. The 8 silage additive treatments were: untreated alfalfa(control); two commercial additives(GFJ and Chikuso-1); an originally selected LAB(Lactobacillus plantarum a214) isolated from alfalfa silage; a cellulase-producing Bacillus(CB) isolated from fresh alfalfa; cellulase(C); and the combined additives(a214+C and a214+CB). Silage fermentation characteristics, chemical composition and microorganism populations were analysed after 30, 60 and 65 days(60 days followed by exposure to air for five additional days). In vitro digestibility was analysed for 30 and 60 days. Compared with the other treatments, selected LAB a214, a214 combined with either C or CB, and Chikuso-1 had the decreased(Pling process, and there were no differences(P>0.05) among them. Fiber degradation was not significant(P≥0.054) in any C or CB treatments. The a214 treatment showed the highest(P=0.009) in vitro digestibility of dry matter(595.0 g kg–1DM) after ensiling and the highest abundance of Lactobacillus(69.42 and 79.81%, respectively) on days 60 and 65, compared to all of other treatments. Overall, the silage quality of alfalfa was improved with the addition of a214, which indicates its potential as an alfalfa silage inoculant.

关键词： alfalfa silage cellulase fermentation quality invitro digestibility lactic acid bacteria

Insight-HXMT observations of the Crab pulsar

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Research in Astronomy and Astrophysics 2019年第6期19卷 109-116页

作者： You-li Tuo Ming-Yu Ge li-Ming Song lin-li yan Qing-Cui Bu Jin-Lu Qu Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China University of the Chinese Academy of Sciences Beijing 100049 China School of Mathematics and Physics Anhui Jianzhu University Hefei 230601 China

We report on X-ray emission properties of the Crab pulsar(PSR B0531+21) using observations by Insight-HXMT during its first year after launch. We obtained high signal-to-noise profiles in the X-ray energy band 11–250 keV. We have confirmed an increase in the flux ratio of the second peak over the main peak with increasing energy, consistent with other missions. The separation of the two peaks shows no significant trend with increasing energy. The phase-averaged spectrum, fitted by a logpar model, and the phase-resolved spectra of the Crab pulsar, fitted by a powerlaw in the different energy bands of HXMT, are consistent with RXTE and NuSTAR in that photon indices evolve as a function of phase as well as a function of energy, contributing to a broadband modeling.

关键词： stars neutron star-pulsars individual(Crab)-X-rays

EFFECTS OF TRANSCRANIAL MAGNETIC STIMULATION ON MOTOR CORTICAL EXCITABIliTY AND NEUROFUNCTION AFTER CEREBRAL ISCHEMIA-REPERFUSION INJURY IN RATS

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Chinese Medical Sciences Journal 2005年第4期20卷 226-230,页

作者： Hong-lin Feng li yan Yu-zhou Guan li-ying Cui Department of Neurology Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730

Objective To clarify the effects of repetitive transcranial magnetic stimulation (rTMS) on rat motor cortical excitabi- lity and neurofunction after cerebral ischemia-reperfusion injury. Methods After determined awake resting motor threshold (MT) and motor evoked potentials (MEPs) of right hindlimbs, 20 Sprague-Dawley rats were subjected to middle cerebral artery occlusion (MCAO) reperfusion injury, then rTMS were applied to rTMS group (n = 10) at different time, while control group (n = 10) received no stimulation. A week later, MT and MEPs were evaluated again, as well as neurological deficits and infarct volume. The effects of rTMS and MCAO reperfusion injury on these parameters were analyzed. Results After MCAO reperfusion, both MT level and neurological deficit scores increased, distinct focal infarction formed, and latency of MEP elongated. Compared with the control group, the increased extent of MT and neurological scores of rats receiving rTMS were significantly lower (P linear correlation between postinjury MT and infarct volume (r = 0.64, P litate neurofunction recovery after cerebral ischemia-reperfusion. Postinjury MT could provide prognostic information after MCAO reperfusion injury.

关键词： repetitive transcranial magnetic stimulation cerebral ischemia-reperfusion.injury motor threshold motor evoked potential

Indication to distinguish the burst region of coal gas from seismic data

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Journal of Coal Science & Engineering(China) 2009年第3期15卷 243-247页

作者： CHENG Jian-yuan TANG Hong-wei XU lin li yan-fang Xi＇an Research Institute China Coal Research Institute Xi＇an 710054 China

The velocity of an over-burst coal seam based on laboratory test results. This seam is about 1/3 compared to a normal coal can be considered as a basis to confirm the area of coal and gas burst by seismic exploration technique. Similarly, the simulation result of the theoretical seismic model shows that there is obvious distinction between over-burst coal and normal coal based on the coal reflection＇s travel-time, energy and frequency. The results from the actual seismic data acquired in the coal and gas over-burst cases is consistent with that of the laboratory and seismic modeling; that is, in the coal and gas burst region, seismic reflection travel time is delayed, seismic amplitude is weakened and seismic frequency is reduced. Therefore, it can be concluded that seismic exploration tech- nique is promising for use in distinguishing coal and gas over-burst regions based on the variation of seismic reflection travel time, amplitude and frequency.

关键词： coal and gas over-burst region seismic data characteristic identification

Research progress of acupuncture treatment on postpartum depression in recent ten years

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TMR Non-Drug Therapy 2021年第1期4卷 36-43页

作者： lin-yan li Xiao-Ying Zhang Department of Traditional Chinese Medicine Wujing Community Health CenterAffiliated to Shanghai University of Traditional Chinese MedicineShanghai 200241China

In recent years,postpartum depression has gained increasing attention around the world due to its high prevalence and severe health ***,a considerable number of postpartum depression patients seek help from alternative therapies especially acupuncture,despite the limited evidence available in terms of the effectiveness of acupuncture on postpartum *** article summarizes the Chinese and English randomized controlled trials available on acupuncture treatment for postpartum depression over the past ten years and provides a detailed review.10 randomized controlled trials were identified in this *** treatment regimens described in these studies included acupuncture mono-therapy,electro-acupuncture mono-therapy,or acupuncture combined with other therapies;and the treatment duration ranged from one month to three *** Hamilton Depression Scale,Edinburgh Postpartum Depression Scale,and estradiol levels in serum were commonly used to assess the efficacy of acupuncture on postpartum *** published data suggests that acupuncture,including manual and electrical stimulation,can significantly reduce Hamilton Depression scores and Edinburgh Postpartum Depression scores,and can increase serum estradiol levels compared with different ***,fewer adverse effects were reported following acupuncture treatment than in the control treatment ***,there have also been some studies reporting inconsistent results in the effectiveness of acupuncture on postpartum ***,acupuncture appears to be a potentially effective and safe therapy for postpartum depression,but its outcomes require validation by more rigorously designed studies.

关键词： Acupuncture Postpartum depression Treatment Chinese herbal medicine Mechanism

Long-term evolution of the X-ray flux of the Crab pulsar

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Radiation Detection Technology and Methods 2023年第1期7卷 48-55页

作者： Hai-Sheng Zhao Ming-Yu Ge Xiao-Bo li lin-li yan You-li Tuo Fang-Jun Lu li-Ming Song Cong-Zhan liu Shu Zhang Shuang-Nan Zhang Key Laboratory for Particle Astrophysics Institute of High Energy PhysicsChinese Academy of Sciences19B Yuquan RoadBeijing 100049China School of Mathematics and Physics Anhui JianZhu UniversityHefei 230601AnhuiChina

Purpose In order to carry out in-orbit calibration,the hard X-ray modulation telescope satellite(HXMT)has made a number of observations of Crab *** study the long-term evolution of the X-ray flux of the Crab pulsar with these observational *** We use nearly four years Crab pulsar’s data obtained by HXMT and the neutron star interior composition of explorer to test whether L_(x)∝L_(sd)^(α) holds for an individual pulsar,where L_(x) is the pulsed X-ray luminosity and Lsd is its spin-down *** also combine the earlier results obtained with PCA and HEXTE data(yan et *** ApJ 865:21,2018)to get the long-term evolution characteristics of the Crab *** We find the X-ray flux evolution can be fitted by a linear correlation:L_(x)∝L_(sd)^(1.42±0.18).In soft X-ray energy band(1–10 keV)and hard X-ray energy band(27–250 keV),αdoes not change significantly with either energy or ***,this will need to be confirmed in *** example,the interpulse component of hard X-ray may follow L_(x)∝L_(sd)^(0.96±0.34),which may be different from the correlation of soft X-rays and main pulse *** the other hand,the hard X-ray flux evolution shows that the performance of high energy X-ray telescope(HE)onboard HXMT,such as effective area,is *** We conclude that the X-ray luminosity of the Crab pulsar closely correlates with its spin-down ***,the emission mechanism responsible for these phenomena remains not fully understood.

关键词： X-rays Crab pulsar Flux evolution Spin-down luminosity

Physical Simulation of Small-bore Copper-vapor Laser

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Chinese Journal of Lasers 1999年第1期8卷 22-29页

作者： YU Deli TAO Yongxiang YIN Xianhua WANG Runwen CHEN lin yanG yan li Hailan (Shanghai Institute of Optics and Fine Mechanics, The Chinese Academy of Sciences, Shanghai 201800, China) 中科院上海光学精密机械所上海

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１ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｒｅｃｅｎｔｙｅａｒｓｔｈｅｃｏｐｐｅｒｖａｐｏｒｌａｓｅｒ（ＣＶＬ）ｈａｓｂｅｅｎｄｅｖｅｌｏｐｅｄｒａｐｉｄｌｙ，ａｍａｒｋｅｄａｃｈｉｅｖｅｍｅｎｔｈａｓｂｅｅｎｏｂｔａｉｎｅｄｏｎｉｔｓｔｈｅｏｒｉｅｓａｎｄｄ...

关键词： Copper vapor laser (CVL) kinetic model computer simulation thermal analysis