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Effect of the succession of the microbial community on physicochemical properties and flavor compounds of Mucor wutungkiao-fermented sufu

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Food Bioscience 2023年第1期51卷 1180-1189页

作者： Zixia Chen Jiajia Song Lu ren Hongwei Wang Yu Zhang Huayi suo College of Food Science Southwest UniversityChongqing400715China Chongqing Agricultural Product Processing Technology Innovation Platform Chongqing400715China

The effect of microbial succession on the quality and flavor of sufu in the process of pure strain fermentation remains *** this study,Mucor wutungkiao 40477 was used as a starter culture to investigate the changes of physicochemical properties and flavor compounds of Mucor wutungkiao-fermented sufu during fermentation and the correlation with *** results revealed that the levels of amino acid nitrogen and total acid gradually increased,and the pH,hardness and elasticity of the sufu gradually decreased.17 free amino acids were detected,and umami amino acid mainly contributed to taste of Mucor wutungkiao-fermented sufu.A total of 51 flavor compounds were identified,among which esters accounted for the highest ***_f_Enterobacteriaceae,Lactococcus and Aspergillus presented as the primary microorganism during fermentation *** addition,the correlation between microbial community and physicochemical properties and flavor was *** study provided information for analysis of Mucor wutungkiao-fermented sufu at different fermentation periods in terms of the microbial diversity and physicochemical properties,which can be useful for producing sufu products through pure culture fermentation.

关键词： Sufu Volatile compounds Bacterial community Illumina MiSeq sequencing Correlation analysis

Demonstration and operation of quantum harmonic oscillators in an AlGaAs–GaAs heterostructure

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Frontiers of physics 2023年第1期18卷 63-69页

作者： Guangqiang Mei Pengfei suo li Mao Min Feng limin Cao School of Physics and Technology Center for Nanoscience and Nanotechnologyand Key Laboratory of Artificial Micro-and Nano-structures of Ministry of EducationWuhan UniversityWuhan 430072China

The quantum harmonic oscillator(QHO),one of the most important and ubiquitous model systems in quantum mechanics,features equally spaced energy levels or *** we present a new class of nearly ideal QHOs formed by hydrogenic substitutional dopants in an AlGaAs/GaAs *** the basis of model calculations,we demonstrate that,when aδ-doping Si donor substitutes the Ga/Al lattice site close to AlGaAs/GaAs heterointerface,a hydrogenic Si QHO,characterized by a restoring Coulomb force producing square law harmonic potential,is *** gives rise to QHO states with energy spacing of~8–9 *** experimentally confirm this proposal by utilizing gate tuning and measuring QHO states using an aluminum single-electron transistor(SET).A sharp and fast oscillation with period of~7–8 mV appears in addition to the regular Coulomb blockade(CB)oscillation with much larger period,for positive gate biases above 0.5 *** observation of fast oscillation and its behavior is quantitatively consistent with our theoretical result,manifesting the harmonic motion of electrons from the *** results might establish a general principle to design,construct and manipulate QHOs in semiconductor heterostructures,opening future possibilities for their quantum applications.

关键词： quantum harmonic oscillator AlGaAs/GaAs semiconductor heterostructure single-electron transistor gate tuning

Heavy Metal Migration Characteristics of Co-Combustion between Sewage Sludge and High Alkaline Coal on Circulating Fluidized Bed

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Journal of Thermal Science 2022年第6期31卷 2178-2188页

作者： li Yaode YANG Dong ZHOU Xihong DONG Le suo lihui SUN Wenbo State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong UniversityXi'an Jiaotong UniversityXi'an 710049China College of Energy&Power Engineering Northeast Electric Power UniversityJilin 132000China

The migration characteristics of heavy metals in co-combustion of sewage sludge and high alkali coal in circulating fluidized bed were studied by experiments and simulations. Temperature plays a crucial role in thermodynamic equilibrium distribution and migration characteristics of heavy metals. At the temperature range of 700℃-1200℃, Hg is completely gaseous and the proportion of Pb, Ni, and Cd in the gas phase is also high. As is mainly elemental in the system, and the proportion of Cr in the solid phase is large. Zn compounds are diverse and mostly solid materials. The volatility of Cu is not strong, and it will become gaseous when the temperature exceeds 1700℃. The proportion of heavy metals in the gas phase decreases as the excess air ratio increases. In an oxygen-rich atmosphere, most of Zn and Ni are converted to oxides;Pb and Cd are converted to crystalline silicate;Cu is converted to partial aluminate;Cr compound is decomposed to form Cr_(2)O_(3);they are good for the solidification and controlling of heavy metals. The elemental Hg is converted to HgCl_(2) and the elemental As is converted to AsCl_(3). Temperature also has a great influence on the volatilization rate of heavy metals. The higher the temperature, the shorter the time they reach the maximum volatility.

关键词： co-combustion heavy metal migration circulating fluidized bed sewage sludge high alkali coal

Minimally invasive surgery vs laparotomy in patients with colon cancer residing in high-altitude areas

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World Journal of Clinical Cases 2021年第35期9卷 10919-10926页

作者： Duo-Ji suo Lang Yang-Zhen Ci ren Zha-Xi Bian Ba Department of General Surgery People’s Hospital of Tibet Autonomous RegionLasa 850000Tibet Autonomous RegionChina Department of Internal Medicine The Tibet Autonomous Region Centers for Disease Control and PreventionLasa 850000Tibet Autonomous RegionChina

BACKGROUND Colon cancer is associated with a higher incidence among residents in highaltitude *** environment at high altitudes inhibits the phagocytic and oxygen-dependent killing function of phagocytes,thereby increasing the inflammatory factors,inhibiting the body’s innate immunity and increasing the risk of colon *** To examine the effect of minimally invasive surgery vs laparotomy in patients with colon cancer residing in high-altitude *** Ninety-two patients with colon cancer in our hospital from January 2019 to February 2021 were selected and divided into the minimally invasive surgery and laparotomy groups using the random number table method,with 46 patients in each *** invasive surgery was performed in the minimally invasive group and laparotomy in the laparotomy *** conditions,inflammatory index pre-and post-surgery,immune function index and complication probability were *** Operative duration was significantly longer and intraoperative blood loss and recovery time of gastrointestinal function were significantly less(all Prences in serum C-reactive protein,interleukin-6 and tumor necrosis factor-αlevels between the groups,whereas after surgery,the levels were significantly higher in the minimally invasive group(26.98±6.91 mg/L,146.38±11.23 ng/mL and 83.51±8.69 pg/mL vs 41.15±8.39 mg/L,186.79±15.36 ng/mL and 110.65±12.84 pg/mL,respectively,Prences in CD3+,CD4+and CD4+/CD8+levels between the groups,whereas after surgery,the levels decreased in both groups,being significantly higher in the minimally invasive group(55.61%±4.39%,35.45%±3.67%and 1.30±0.35 vs 49.68%±5.33%,31.21%±3.25%and 1.13±0.30,respectively,Plication probability was significant

关键词： Minimally invasive surgery Laparotomy High-altitude area Colon cancer Surgical trauma Immune dysfunction

Effects of preparation conditions of Au/FeO_x /Al_2O_3 catalysts prepared by a modified two-step method on the stability for CO oxidation

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Journal of Natural Gas Chemistry 2011年第1期20卷 41-47页

作者： Xuhua Zou Jinguang Xu Shixue Qi Zhanghuai suo lidun An Feng li Institute of Applied Catalysis Yantai University Yantai 264005 Shandong China State Key Laboratory of Chemical Engineering Resource Beijing University of Chemical Technology Beijing 100029 China

Composite oxide FeO x /Al 2 O 3 -supported gold catalysts were prepared by a modified two-step method. The effects of preparation conditions on the initial catalytic activity and long-time stability were studied for CO oxidation. XRD, XPS and in situ FTIR were employed to investigate the state of FeO x and the species on the catalyst surface. The results showed that Au/FeO x /Al 2 O 3 catalysts prepared by this method exhibited high activity and high stability in a wide pH value range. Calcination pretreatment was proved to be beneficial to improving the activity and stability. The beneficial effects of FeO x acting as a structural promoter could be ascribed to the ability to supply active oxygen species. As the precursor of FeO x , Fe（NO 3 ） 3 is superior to FeCl 3 for obtaining higher stability.

关键词： supported gold catalyst CO oxidation composite oxide support pH value stability

Structural evolution of plasma sprayed amorphous li_(4)Ti_(5)O_(12) electrode and ceramic/polymer composite electrolyte during electrochemical cycle of quasi-solid-state lithium battery

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Journal of Advanced Ceramics 2021年第2期10卷 347-354页

作者： Xi Wu Xinghua liang Xiaofeng Zhang lingxiao Lan suo li Qixin Gai Guangxi Key Laboratory of Automobile Components and Vehicle Technology Guangxi University of Science&TechnologyLiuzhou545006China National Engineering Laboratory for Modern Materials Surface Engineering Technology Guangdong Institute of New MaterialsGuangdong Academy of SciencesGuangzhou510650China

A quasi-solid-state lithium battery is assembled by plasma sprayed amorphous li_(4)Ti_(5)O_(12) to provide the outstanding electrochemical stability and better normal interface *** Electron Microscope(SEM),Scanning Transmission Electron Microscopy(STEM),Transmission Electron Microscopy(TEM),and Energy Dispersive Spectrometer(EDS)were used to analyze the structural evolution and performance of plasma sprayed amorphous LTO electrode and ceramic/polymer composite electrolyte before and after electrochemical *** comparing the electrochemical performance of the amorphous LTO electrode and the traditional LTO electrode,the electrochemical behavior of different electrodes is *** results show that plasma spraying can prepare an amorphous LTO electrode coating of about 8μ*** 200 electrochemical cycles,the structure of the electrode evolved,and the inside of the electrode fractured and cracks expanded,because of recrystallization at the interface between the rich fluorine compounds and the amorphous LTO ***,the ceramic/polymer composite electrolyte has undergone structural evolution after 200 test *** electrochemical cycle results show that the cycle stability,capacity retention rate,coulomb efficiency,and internal impedance of amorphous LTO electrode are better than traditional LTO *** innovative and facile quasi-solid-state strategy is aimed to promote the intrinsic safety and stability of working lithium battery,shedding light on the development of next-generation high-performance solid-state lithium batteries.

关键词： plasma spraying li_(4)Ti_(5)O_(12)(LTO)electrode ceramic/polymer composite electrolyte electrochemical cycle quasi-solid-state lithium battery

Thermal Fatigue Behavior of Ni_3Al Based Superalloy IC6E

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Chinese Journal of Aeronautics 2006年第B12期19卷 1-4页

作者： JI Lei li Shu-suo HAN Ya-fang JIANG li-wu School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics Beijing 100083 China

The thermal fatigue behavior of Ni3Al based superalloy IC6E during the cycles between 900 ℃/1 000 ℃ and the room tempera- ture was investigated. The experimental results indicate that the primary and secondary thermal fatigue cracks initiate inside or round the borides and then spread away along grain boundaries and/or in interdendritic areas. The fracture of borides and their separation from the matrix at interfaces are mainly responsible for the crack initiation and its spreading. At temperatures higher than 1 000 ℃, the grain boundary oxidation combined with cyclic stresses accelerates the crack growth.

关键词： Ni3Al thermal fatigue cast superalloy

Representation of the Madden–Julian Oscillation in CAMS-CSM

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Journal of Meteorological Research 2019年第4期33卷 627-650页

作者： Pengfei ren li GAO Hong-li ren Xinyao RONG Jian li Chinese Academy of Meteorological Sciences China Meteorological AdministrationBeijing 100081 Numerical Prediction Center National Meteorological CenterChina Meteorological AdministrationBeijing 100081 Laboratory for Climate Studies&China Meteorological Administration-Nanjing University Joint Laboratory for Climate Prediction Studies National Climate CenterChina Meteorological AdministrationBeijing 100081 Department of Atmospheric Sciences School of Environment StudiesChina University of GeoscienceWuhan 430074 State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesChina Meteorological AdministrationBeijing 100081 Institute of Climate System(Polar Meteorology) Chinese Academy of Meteorological SciencesChina Meteorological AdministrationBeijing 100081

The Madden–Julian Oscillation(MJO)has a significant impact on global weather and climate and can be used as a predictability resource in extended-term *** evaluate the ability of the Chinese Academy of Meteorological Sciences Climate System Model(CAMS-CSM)to represent the MJO by using the diagnostic method proposed by the US Climate Variability and Predictability Program(CliVAR)MJO Working Group(MJOWG).In general,the model simulates some major characteristics of MJO well,such as the seasonality characteristics and geographical dependence,the intensity of intraseasonal variability(ISV),dominant periodicity,propagation characteristics,coherence between outgoing longwave radiation(OLR)and wind,and life cycle of MJO ***,there are a few biases in the model when compared with observational/reanalyzed *** include an overestimate of precipitation in the convergence zone of the North and South Pacific,a slightly weaker eastward propagation,and a shift in the dominant periodicity toward lower frequencies with slower speeds of eastward *** model gives a poor simulation of the northward propagation of MJO in summer and shows less coherence between the MJO convection and *** role of moistening in the planetary boundary layer(PBL)in the eastward/northward propagation of MJO was also *** accurate representation of the vertical titling structure of moisture anomalies in CAMS-CSM leads to moistening of the PBL ahead of convection,which accounts for the eastward/northward propagation of *** simulation of the vertical structure of the wind and moisture anomalies in the western Pacific leads to a poor simulation of the northward propagation of MJO in this *** analysis of the PBL integral moisture anomalies shows that the model gives a good simulation of the moisture charging process ahead of MJO convection and that the zonal advection of moisture convergence term has a primary role in the detour of MJO over the Maritim

关键词： Madden-Julian Oscillation CAMS-CSM simulations budget analysis

SAR-GMTI investigation in hybrid along-and cross-track baseline InSAR

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Science in China(Series F) 2009年第8期52卷 1399-1408页

作者： suo ZhiYong li ZhenFang BAO Zheng WU JianXin National Key Lab of Radar Signal Processing Xidian University Xi'an 710071 China

A joint-pixel clutter suppression method based on slope compensation is proposed in this paper, In order to eliminate the effect of the terrain interferometric phase caused by the cross-track baseline in hybrid baseline InSAR, the local independent identical distribution of the clutter is satisfied by using the slope compensation technique, and thus the clutter can be suppressed successfully by using the orthogonality of the clutter subspace and the noise subspace. This approach utilizes the information contained in the current pixel as well as in its neighbors, showing robustness to the image coregistration errors. Both the simulated data and the real airborne data are used in proving the validity of the presented approach.

关键词： interferometric synthetic aperture radar (InSAR) along-/cross-track baseline ground moving target indication (GMTI) slope compensation clutter suppression