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| 1 | Climate and litter C/N ratio constrain soil organic carbon accumulation显示文摘Soil organic carbon(SOC) plays critical roles in stabilizing atmospheric CO2 concentration, but the mechanistic controls on the amount and distribution of SOC on global scales are not well understood. In turn, this has hampered the ability to model global C budgets and to find measures to mitigate climate change. Here, based on the data from a large field survey campaign with 2600 plots across China’s forest ecosystems and a global collection of published data from forested land, we find that a low litter carbon-to-nitrogen ratio(C/N) and high wetness index(P/PET, precipitation-to-potentialevapotranspiration ratio) are the two factors that promote SOC accumulation, with only minor contributions of litter quantity and soil texture. The field survey data demonstrated that high plant diversity decreased litter C/N and thus indirectly promoted SOC accumulation by increasing the litter quality. We conclude that any changes in plant-community composition, plant-species richness and environmental factors that can reduce the litter C/N ratio, or climatic changes that increase wetness index, may promote SOC accumulation. The study provides a guideline for modeling the carbon cycle of various ecosystem scales and formulates the principle for land-based actions for mitigating the rising atmospheric CO2 concentration. | Guoyi Zhou Shan Xu Philippe Ciais Stefano Manzoni Jingyun Fang Guirui Yu Xuli Tang Ping Zhou Wantong Wang Junhua Yan Gengxu Wang Keping Ma Shenggong Li Sheng Du Shijie Han Youxin Ma Deqiang Zhang Juxiu Liu Shizhong Liu Guowei Chu Qianmei Zhang Yuelin Li Wenjuan Huang Hai Ren Xiankai Lu Xiuzhi Chen | 2019 | National Science Review2019，6，4： | 21 |
| 2 | Oil-soluble ionic liquids as antiwear and extreme pressure additives in poly-α-olefin for steel/steel contacts显示文摘To enhance the lubricating and extreme pressure(EP) performance of base oils, two types of oil-soluble ionic liquids(ILs) with similar anion albeit dissimilar cations were synthesized. The physical properties of the prepared ILs were measured. The anticorrosion properties of ILs were assessed by conducting corrosion tests on steel discs and copper strips, which revealed the remarkable anticorrosion properties of the ILs in comparison with those of the commercial additive zinc dialkyldithiophosphate(ZDDP). The tribological properties of the two ILs as additives for poly-α-olefin-10(PAO10) with various mass concentrations were investigated. The tribological test results indicate that these ILs as additives are capable of reducing friction and wear of sliding contacts remarkably as well as enhance the EP performance of blank PAO10. Under similar test conditions, these IL additives exhibit higher lubricating and anti-wear(AW) performances than those of ZDDP based additive package in PAO10. Subsequently, X-ray photoelectron spectroscopy(XPS) and energy dispersive spectrometer(EDS) were conducted to study the lubricating mechanism of the two ILs. The results indicate that the formation of tribochemical film plays the most crucial role in enhancing the lubricating and AW behavior of the mixture lubricants. | Guowei HUANG Qiangliang YU Zhengfeng MA Meirong CAI Feng ZHOU Weimin LIU | 2019 | Friction2019，7，1： | 15 |
| 3 | Microblog Burst Keywords Detection Based on Social Trust and Dynamics Model显示文摘Microblog has emerged as a popular medium for providing new sources of information and rapid communications, particularly during burst topics. Burst keywords detection from real-time microblog streams is important for burst topics detection. The exiting algorithms may detect fake burst keywords without taking into account the trustworthiness of the users and human's daily timetable. Our work is the first to combine the trustworthiness of the users with burst keywords detection. We propose a novel approach to detect burst keywords based on social trust and dynamics model. We adapt basic notions of dynamics from physics and model keywords bursts as momentum change of the keywords. On the analogy of physical dynamics model, this approach defines mass as the trustworthiness of user and position as the frequency of keywords. We compute each keyword's burst value by using Moving average convergence/divergence(MACD) and determine whether it is a burst keyword in a given time window. The experimental results on large-scale Sina microblog dataset show that the proposed approach can avoid detecting fake burst keywords. | DONG Guozhong LI Ruiguang YANG Wu WANG Wei GONG Liangyi SHEN Guowei YU Miao LV Jiguang | 2014 | Chinese Journal of Electronics2014，23，4： | 6 |
| 4 | Activation of STAT3 stimulates AHSP expression in K562 cells显示文摘Studies on the chaperone proteinα-hemoglobin stabilizing protein(AHSP)reveal that abundant AHSP in erythroid cells enhance the cells’tolerance to oxidative stress imposed by excessα-hemoglobin in pathological conditions.However,the potential intracellular modulation of AHSP expression itself in response to oxidative stress is still unknown.The present study examined the effect and molecular mechanism of STAT3,an oxidative regulator,on the expression of AHSP.AHSP expression increased in K562 cells upon cytokine IL-6-induced STAT3 activation and decreased in STAT3 knock-down K562 cells.Regulation of AHSP in oxidative circumstance was then examined inα-globin-overloaded K562 cells,and real-time PCR showed strengthened expression of both AHSP and STAT3.ChIP analysis showed binding of STAT3 to AHSP promoter and binding was significantly augmented with IL6 stimulation and uponα-globin overexpression.Dual luciferase reporter assays of the wildtype and mutated SB3 element,an IL-6RE site,in the AHSP promoter in K562 cells highlighted the direct regulatory effect of STAT3 on AHSP gene.Finally,direct binding of STAT3 to SB3 site of AHSP promoter was confirmed with EMSA assays.Our work reveals an adaptive AHSP regulation mediated by the redox-sensitive STAT3 signaling pathway,and provides clues to the therapeutic strategy for AHSP enhancement. | CAO Cong ZHAO GuoWei YU Wei XIE XueMin WANG WenTian YANG RuiFeng LV Xiang LIU DePei | 2014 | Science China(Life Sciences)2014，57，5： | 5 |
| 5 | Effects of scanning speed on microstructure in laser surface-melted single crystal superalloy and theoretical analysis显示文摘Scanning speed is a critical parameter for laser process,which can play a key role in the microstructure evolution of laser melting.In the laser melting of single crystal superalloy,the effects of scanning speed were investigated by experimental analysis and computational simulation.The laser was scanning along710 direction on(001) surface in different speeds.Solidification microstructures of dendrites growth direction and the primary dendritic spacing were analyzed by metallograph.Besides,a planar interface during solidification was taken into attention.Experiment results indicated that the primary dendritic spacing and thickness of planar interface decrease with the increase of speed.Through simulation,distribution of dendrites growth velocity and thermal gradient along dendrite growth direction were calculated,and the simulation of dendrites growth direction agreed with the experiment results.Additionally,a constant value was acquired which can be used to predict the primary dendritic spacing.Moreover,according to curve-fitting method and inequality relation,a model was proposed to predict the thickness of planar interface. | Guowei Wang Jingjing Liang Yanhong Yang Yu Shi Yizhou Zhou Tao Jin Xiaofeng Sun | 2018 | Journal of Materials Science & Technology2018，34，8： | 5 |
| 6 | Alkali-activation reactivity of chemosynthetic Al_2O_3-2SiO_2 powders and their ^(27)Al and ^(29)Si magic-angle spinning nuclear magnetic resonance spectra显示文摘Pure Al_2O_3-2SiO_2 powders were prepared by sol-gel and coprecipitation methods,and their alkaliactivation reactivities were compared.The alkali-activation reactivity of the powder prepared by the sol-gel method was higher than that of the powder prepared by the coprecipitation method.The powders were investigated by ^(27)AI and ^(29)Si magic-angle spinning nuclear magnetic resonance spectroscopy(MAS NMR) to understand the relationship between their structure and alkali-activation reactivity.The ^(27)Al MAS NMR data showed that the five-coordinate AI content of the powder prepared by the sol-gel method was higher than that of the powder prepared by coprecipitation.The higher content of five-coordinate Al corresponded to higher alkali-activation reactivity.The ^(29)Si MAS NMR data showed that for the powder prepared by the sol-gel method,silicon was replaced by aluminum at secondary coordination sites of the central Si atoms during calcination.However,for the powder prepared by single-batch coprecipitation,the main change was from a low degree of polycondensation to a high degree of polycondensation. | Guangjian Zheng Xuemin Cui Dong Huang Jinying Pang Guowei Mo Shujuan Yu Zhangfa Tong | 2015 | Particuology2015，13，5： | 3 |
| 7 | Kongsheng Zhenzhong pill's effect on the learning and memory ability and its neuroprotective effects in vascular dementia rats显示文摘Clinical reports have demonstrated that the Kongsheng Zhenzhong pill (KSZZP),a classical prescription deriving from Valuable Prescription for Emergencies,has good therapeutic effects on vascular dementia.However,the mechanisms that mediate its effects remain unclear.In this study,the expression of N-methyl-D-aspartate receptor 1 mRNA,the content of nitric oxide,and the concentration of calcium in neurons was determined with in situ hybridization,spectrophotometry and flow cytometry,respectively.In addition,the expressions of N-methyl-D-aspartate receptor 1,nerve growth factor protein,and glial cell line-derived neurotrophic factor protein were detected with immunohistochemistry.We found that KSZZP could significantly decrease the expression of N-methyl-D-aspartate receptor 1 mRNA and protein,the content of nitric oxide,and the concentration of calcium in neurons.KSZZP also increased the expression of nerve growth factor and glial cell line-derived neurotrophic factor protein in the hippocampus CA1 region and in the cerebral cortex.Morris water maze and passive avoidance tests verified that KSZZP ameliorated the cognitive impairments of vascular dementia rats.Moreover,the KSZZP-induced improvements in the cognitive functions of vascular dementia rats were correlated with both inhibition of N-methyl-D-aspartate-induced excitable neurotoxicity and elevation of neurotrophic factor expression. | Xuming Ji Huayun Yu Bin Ouyang Guowei Liu Zhichun Wu Heng Liu Fang Du | 2011 | Neural Regeneration Research2011，6，30： | 3 |
| 8 | UGGreedy: Influence Maximization for User Group in Microblogging显示文摘We study a new influence maximization problem about how to find a seed set which can maximize the influence spread to a targeted user group in microblogging. To solve this problem, we propose a threestage User group greedy algorithm(UGGreedy) based on user attributes. To reduce network scale, we delete useless user nodes, and rank the rest of users based on user attributes to form a seed candidate set. We employ the seed candidate set to construct a simplified microblogging network graph. We propose a novel influence greedy algorithm based on influence accumulation spread to find the seed set.Experimental results show that UGGreedy can achieve remarkable efficiency on the influence maximization problem for user group in real microblogging networks. | YU Miao YANG Wu WANG Wei SHEN Guowei DONG Guozhong GONG Liangyi | 2016 | Chinese Journal of Electronics2016，25，2： | 2 |
| 9 | Controlling plasmon‐exciton interactions through photothermal reshaping显示文摘We investigated the plasmon-exciton interactions in an individual gold nanorod(GNR)with monolayer MoS2 at room temperature with the single-particle spectroscopy technique.To control the plasmon-exciton interaction,we tuned the local surface plasmon resonance of an individual GNR in-situ by employing the photothermal reshaping effect.The scattering spectra of the GNR-MoS2 hybrids exhibited two dips at the frequencies of the A and B excitons of monolayer MoS2,which were caused by the plasmon-induced resonance energy transfer effect.The resonance energy transfer rate increased when the surface plasmon resonance of the nanorod matched well with the exciton transition energy.Also,we demonstrated that the plasmon-enhanced fluorescence process dominated the photoluminescence of the GNR-MoS2 hybrid.These results provide a flexible way to control the plasmon-exciton interaction in an all-solid-state operating system at room temperature. | Aiqin Hu Shuai Liu Jingyi Zhao Te Wen Weidong Zhang Qihuang Gong Yongqiang Meng Yu Ye Guowei Lu | 2020 | Opto-Electronic Advances2020，3，1： | 2 |
| 10 | Supervised Analysis of Hepatitis C Virus RNA-Positive Case Reporting in County-Level Hospitals--China,2013−2018显示文摘What is already known on this topic?To understand the status of the diagnosis and reporting of hepatitis C and standardize the reporting of hepatitis C cases in county-level hospitals,we conducted the first supervised analysis of hepatitis C cases in county-level hospitals in China from 2013 to 2018,covering all provincial-level administrative divisions(PLADs)except Tibet.What is added by this report?Through 6 years of supervision,we have obtained key data such as the nucleic acid detection rate and positive rate of hepatitis C virus(HCV)antibody positive cases in our county-level hospitals,the report rate and accuracy of HCV RNA positive cases,and standardized and improved the hepatitis C case reporting in countylevel hospitals to improve data quality and provide data support for the judgment and estimation of hepatitis C in China.What are the implications for public health practice?By strengthening the management and supervision of hepatitis C case reporting,the reporting rate and accuracy of HCV RNA positive cases in county-level hospitals in China had been greatly improved.By combining the number of HCV antibody tests and the number of viral nucleic acid tests in medical institutions around the country,it was possible to effectively assess the current status of hepatitis C in China and to provide a scientific basis for the development of hepatitis C prevention and treatment measures. | Faxin Hei Guowei Ding Shaodong Ye Hailiang Yu Lin Pang Zhongfu Liu | 2020 | China CDC weekly2020，2，31： | 1 |
| 11 | DNA methyltransferase mediates dose-dependent stimulation of neural stem cell proliferation by folate显示文摘 | Wen Li Min Yu Guowei Huang | 2013 | J Nutr Biochem2013，24，： | 1 |
| 12 | Posttreatment of effluent fromcoke-plant wastewater treatment system in seguencing batch reactors显示文摘 | YU Huanqing GU Guowei SONG Leping | 1997 | J Environ Eng1997，123，3： | 1 |
| 13 | Cyclic and Linear Thiopeptides from Soil-Derived Streptomyces sp.CPCC 203702 with Antiviral and Antibacterial Activities显示文摘A new cyclic thiopeptide,berninamycin F(3),three new linear thiopeptides,berninamycins G—I(4-6),and two known berninamycin derivatives,berninamycins C and D(1 and 2)were isolated from Streptomyces sp.CPCC 203702.Their structures were elucidated through HRESIMS and one-and two-dimensional NMR data,and the absolute configurations were assigned using Marfey's method.Compounds 4-6 are the first examples of linear berninamycin analogs.Notably,compound 4 is the first example of linear thiopeptide with a 1-(oxazol-2-yl)ethan-1-one group,compound 6 is the first linear thiopeptide derivative with methylated oxoacetate moiety.Compounds 1-6 exhibited excellent anti-Zika virus activities with IC_(50) values in the range of 4.4-10.5μmol/L,which were superior to that of the positive control ribavirin(IC_(50)=49.2μmol/L).Compounds 1 and 3 showed strong anti-influenza A virus activities with the IC_(50) values of 15.6 and 3.2μmol/L,respectively.Compound 1 exhibited good antibacterial activities against methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococcus spp.pathogens. | Dewu Zhang Yujia Wang Xinxin Hu Xiaoyu Wang Linzi Li Guowei Gu Bingyuan Zhang Shan Cen Xuefu You Liyan Yu | 2021 | Chinese Journal of Chemistry2021，39，12： | 1 |
| 14 | Orogenisis and dynamic of the Oinling Orogen显示文摘 | Zhang Guowei Meng Oingren Yu Zaiping | 1996 | Science in China(Series D)1996，39，3： | 1 |
| 15 | Comparison between inhibitor and uncoupler for minimizing excess sludge production of an activated sludge process显示文摘In order to study the minimization of excess sludge production,the reduction in the excess sludge production in the presence of an inhibitor and uncoupler was studied in this work.The experimental results show that such an addition could effectively reduce the production of excess sludge.With the energy uncoupling model established in this work,energy uncoupling coefficient(Eu)was used to evaluate the reduction in excess sludge production.The energy uncoupling coefficients in the presence of dinitrophenol(dNP),Zn^(2+),and Cu^(2+)was 0.75,0.46,and 0.18,respectively.The analysis demonstrated that energy spilling occurred in the presence of dNP,and that dNP was an effective uncoupler for reducing the production of excess activated sludge without affecting the microbial respiration activity. | CHEN Guowei XI Pengge XU Deqian YU Hanqing | 2007 | Frontiers of Environmental Science & Engineering2007，1，1： | 1 |
| 16 | Air pollution and children’s respiratory symptoms in six cities of Northern China显示文摘 | Guowei Pan Shujuan Zhang Yiping Feng Ken Takahashi Jun Kagawa Lianzheng Yu Ping Wang Meijuan Liu Qinan Liu Shuwen Hou Bailing Pan Jianping Li | 2010 | Respiratory Medicine2010，，12： | 1 |
| 17 | Rate-Dependent Weakening of the Shear Force for the Submerged Granular Medium Based on the Experimental Study显示文摘An experimental study is conducted to describe rate-dependent shear strength in a submerged granular medium to understand the mystery of submarine landslides with extremely small slide angles and long run-out distances.The experimental apparatus allows a long-span shear strain rate,■,for five orders of magnitude from 10^(-4)to 10^(1)s^(-1).It is observed that(a)submerged sand under higher shear tend to have bigger yield strength;this positive response of rate effect is significantly affected by the magnitudes of shear strain rates.(b)the residual strength of soil is clearly affected negatively by shear strain rate,decreasing as shear strain rate increases;even small variations under lower rate cause notable differences in residual strength,indicating a novel weaking rate-dependent.The yield strength and residual strength are corresponding to the shear state of soil.Hence,it is enough experimentally to explain that as long as the submarine mass flow speeds up,the slope sliding can be kept by only a small amount of force along the slide direction,which can be calculated as the gravity component even with a small slide angle. | Hu Zheng Guowei Dai Wuwei Mao Yu Huang | 2023 | Journal of Earth Science2023，34，2： | 0 |
| 18 | A flame-retardant binder with high polysulfide affinity for safe and stable lithium–sulfur batteries显示文摘Lithium-sulfur(Li-S) batteries have shown promises for the next-generation, high-energy electrochemical storage, yet are hindered by rapid performance decay due to the polysulfide shuttle in the cathode and safety concerns about potential thermal runaway. To address the above challenges, herein, we show a flame-retardant cathode binder that simultaneously improves the electrochemical stability and safety of batteries. The combination of soft and hard segments in the polymer framework of binders allows high flexibility and mechanical strength for adapting to the drastic volume change during the Li(de)intercalation of the S cathode. The binder contains a large number of polar groups, which show the high affinity to polysulfides so that they help to anchor active S species at the cathode. These polar groups also help to regulate and facilitate the Li-ion transport, promoting the kinetics of polysulfide conversion reaction. The binder contains abundant phosphine oxide groups, which, in the case of battery's thermal runaway, decompose and release PO· radicals to quench the combustion reactions and stop the fire. Consequently, Li-S batteries using the new cathode binder show the improved electrochemical performance, including a low-capacity decay of 0.046% per cycle for 800 cycles at 1 C and favorable rate capabilities of up to 3 C. This work offers new insights on the practical realization of high-energy rechargeable batteries with stable storage electrochemistry and high safety. | Guowei Yu Guofeng Ye Cheng Wang Chenyang Wang Zhaoyun Wang Pu Hu Yu Li Xi-Xi Feng Shuang-Jie Tan Min Yan Sen Xin Zhitian Liu | 2024 | Science China Chemistry2024，67，3： | 0 |
| 19 | Systematic study of the structure-property relationship of a series of near-infrared absorbing push-pull heptamethine chromophores for electro-optics显示文摘This study reports the facile synthesis,characterization and quantitative structure-property relationship analysis of molecular and material properties of tricyanofuran-based(TCF)dipolar heptamethines with different electron donors of indoline(F1),benzo[e]-indoline(F2),benz[cd]indoline(F3),and Michler’s base derivatives(Ml and M2).The linear and nonlinear optical(NLO)properties of these chromophores have been thoroughly investigated,and the relationship between molecular and bulk response has been analyzed and compared with dipolar tetraene AJLZ53 as one of the best chromophores for electro-optic(EO)devices.In particular,we provide responsible data collection and analysis of optical and EO properties for poled thin films using a widelyrecognized and accredited methodology of prism coupling system with the help of rigid oriented gas model.We found that these push-pull heptamethines with synthetic efficacy exhibit high near-infrared absorption,excellent chemical stability and large hyperpolarizabilities(β)varied from 1,023×10^-30 esu for F1,3,047×10^-30 esu for M1,and 3,547×10^-30 esu for F3 at 1,304 nm in poled films,respectively.Theβvalues of these molecules are among the highest ones for TCF-based dipolar chromophores,and also agree well with reported analytical results in the solutions.In poled polymers with a modest chromophoric loading density of1.3×10^20 cm^-3,Ml and M2 give a high poled-induced noncentrosymmetric order and relatively large r33 values around40 pm V^-1 at 1,304 nm,indicative of largeμβvalues and suitable structural modification for high poling efficiency.Furthermore,a binary EO polymer based on the co-loading of Ml and AJLZ53 achieve a large r33 value of 143.3 pm V^-1 at 1,304 nm.Our studies suggest that concise synthesis and molecular design of push-pull polymethines can be well guided by the tabulation of their linear and NLO properties in bulk materials,and streamline future development of high performance organic EO materials for photonic applications. | Di Zhang Jie Zou Wen Wang Qian Yu Guowei Deng Jieyun Wu Zhong-An Li Jingdong Luo | 2021 | Science China Chemistry2021，64，2： | 0 |
| 20 | Function of anaerobic portion in a conventional sequencing batch reactor显示文摘The performance of SBRs treating two kinds of wastewater(synthetic wastewater con-taining polyvinyl alcohol and effluent from a coke-plant wastewater treatment system)was investi-gated in this study,in order to examine the exact function of anaerobic portion in a conventionalSBR.The set up of 4-or 8-hour anaerobic mixing period in a SBR’s cycle did not benefit for PVAdegradation.While an anaerobic reactor seeded with anaerobic sludge could partly hydrolyse andacidify PVA into readily-degradable intermediates.During the anaerobic fill period of an SBR treat-ing the effluent from a coke-plant wastewater treatment system,the organic concentration was re-duced to certain extent due to the adsorption of activated sludge and dilution of the mixed liquorfrom the previous cycle.Parts of readily-degradable organics in the influent were utilised by denitri-fiers as carbon source.The biomass in a conventional SBR was alternatively imposed to aerobic andanaerobic conditions in its operating cycle,the environmental conditions needed for anaerobic hy-drolization and acidification of refractory organics could not occur in such an SBR. | Yu Hangqing School of Civil & Structural Engineering,Nanyang Technological University,639798,SingaporeGu Guowei Song Lepin School of Environmental Engineering,Tongji University,Shanghai 200092,China | 1997 | Journal of Environmental Sciences1997，9，1： | 0 |
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