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Some new integral inequalities for conjugate A-harmonic tensors

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Applied Mathematics(A Journal of Chinese Universities) 2008年第1期23卷 43-50页

作者： GAO Hong-ya HOU lan-ru College of Math. and Comput. Sci. Hebei University Baoding 071002 China. Mathematics Study Center of Hebei Province Shijiazhuang 050016 China. Beijing Science Technology and Management College Beijing 100086 China.

A new kind of weight-Ar^λ3 （λ1, λ2, Ω）-weight is used to prove the local and global integral inequalities for conjugate A-harmonic tensors, which can be regarded as generalizations of the classical results. Some... 详细信息

关键词： conjugate A-harmonic tensor Ar^λ3 (λ1 λ2 Ω)-weight weighted inequality quasiregular mapping.

Kinetic model of chromium release from argon oxygen decarburisation(AOD)slag in a neutral leachate

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Journal of Iron and Steel Research International 2020年第11期27卷 1303-1310页

作者： ya-nan Zeng qian-qian Ren Bao Liu Jun-guo Li School of Metallurgy and Energy North China University of Science and TechnologyTangshan 063200HebeiChina

Valorisation of argon oxygen decarburisation(AOD)slag,a suitable recycling resource,is limited by the release of a notable amount of heavy metals,such as *** mineralogical component of AOD slag was characterised by X-ray diffraction and scanning electron microscopy-energy-dispersive X-ray *** explore the release kinetics of chromium from AOD slag,neutral leaching tests were performed at various *** results indicated the existence of two leaching stages:quick and slow leaching *** 2 h,the chromium release fraction increased sharply as the leaching time *** the leaching time in creased,the chromium release rate gradually *** on the shrinking core model,chromium release kinetic models for the quick and slow leaching stages from the AOD slag were independently *** chromium release was controlled by solid product diffusion during the quick leaching stage and a complicated process in the slow leaching *** activation energy of chromium leaching was calculated based on the Arrhenius *** product diffusion was the velocity-determining step during the 2 h leaching *** the slow leaching stage,chromium release was controlled by complicated hybrid control dominated by solid product diffusion.

关键词： Kinetic model Chromium release Shrinking core model-AOD slag

Seismic diagnostics of solar-like oscillating stars

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Research in Astronomy and Astrophysics 2017年第5期17卷 51-64页

作者： ya-Guang Li Ming-Hao Du Bo-Han Xie Zhi-Jia Tian Shao-lan Bi Tan-Da Li ya-qian Wu Kang Liu Department of Astronomy Beijing Normal University Department of Astronomy Peking University Sydney Institute for Astronomy (SIfA) School of Physics University of Sydney Stellar Astrophysics Centre Department of Physics and Astronomy Aarhus University

High precision and long-lasting Kepler data enabled us to estimate stellar properties with asteroseismology as an accurate tool. We performed asteroseismic analysis on six solar-like stars observed by the Kepler mission： KIC 6064910, KIC 6766513, KIC 7107778, KIC 10079226, KIC 10147635 and KIC 12069127. The extraction of seismic information includes two parts. First, we obtained two global asteroseismic parameters, mean large separation ？_ν and frequency of maximum power ν_（max）,with autocorrelation function and collapsed autocorrelation function. Second, we extracted individual oscillation modes ν_（nl） with low-l degree using a least-squares fit. Stellar grid models were built with yale Rotating Stellar Evolution Code（YREC） to analyze stellar properties. They covered the range of M = 0.8 ~ 1.8 M_⊙with a step of 0.02 M_⊙ and [Fe/H] =-0.3 ~ 0.4 dex with a step of 0.1 *** used a Bayesian approach to estimate stellar fundamental parameters of the six stars, under the constraints of asteroseismic parameters（？_ν, ν_（max）） and non-asteroseismic parameters（Teff, [Fe/H]）. We discover that the six targets include five sub-giant stars with 1.2 ~1.5 M_⊙ and one main-sequence star with 1.08 M_⊙, and with ages in the range of 3 ~5 Gyr.

关键词： diagnostics stars stellar Bayesian constraints lasting oscillation oscillating giant smoothed

Impact of forcing data and land surface properties on snow simulation in a regional climate model:a case study over the Tianshan Mountains,Central Asia

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Journal of Mountain Science 2021年第12期18卷 3147-3164页

作者： LI qian yaNG Tao LI lan-hai State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Ili Station for Watershed Ecosystem Research Chinese Academy of SciencesXinyuan 835800China Key Laboratory for Mountain Hazards and Earth Surface Process Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China CAS Research Centre for Ecology and Environment of Central Asia Urumqi 830011China Xinjiang Key Laboratory of Water Cycle and Utilization in Arid Zone Urumqi 830011China

Snow is a key variable that influences hydrological and climatic *** surface models employing snow physics-modules can simulate the snow accumulation and ablation ***,there are still uncertainties in modeling snow resources over complex terrain such as *** study employed the National Center for Atmospheric Research’s Weather Research and Forecasting(WRF)model coupled with the Noah-Multiparameterization(Noah-MP)land surface model to run one-year simulations to assess its ability to simulate snow across the Tianshan *** tests were conducted based on different reanalysis forcing datasets and different land surface *** results indicated that the snow dynamics were reproduced in a snow hydrological year by the WRF/Noah-MP model for all of the *** model produced a low bias in snow depth and snow water equivalent(SWE)regardless of the forcing ***,the underestimation of snow depth and SWE could be relatively alleviated by modifying the land cover and vegetation ***,no significant improvement in accuracy was found in the date of snow depth maximum and melt *** best performance was achieved using ERA5 with modified land cover and vegetation parameters(mean bias=−4.03 mm and−1.441 mm for snow depth and SWE,respectively).This study highlights the importance of selecting forcing data for snow simulation over the Tianshan Mountains.

关键词： WRF/Noah-MP model Initial and lateral boundary conditions land surface properties Snow depth Snow water equivalent

Facile Synthesis of 5-Hydroxy-2-(2-phenylethyl)chromone

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Chemical Research in Chinese Universities 2010年第2期26卷 245-248页

作者： ZHANG lan-ping WANG ya-lou Department of Medicinal Chemistry China Pharmaceutical University Nanjing 210009 P. R. China

5-Hydroxy-2-（2-phenylethyl）chromone（l） was synthesized from 2,6-dihydroxyacetophenone（7） obtained via four-steps resorcinol-reacting with phenylpropionic acid, the procedures involved are Baker-Venkataraman rear... 详细信息

关键词： 5-Hydroxy-2-(2-phenylethyl)chromone Synthesis Baker-Venkataraman rearrangement Imperata cylindrica

Enhancing the functionality of mesenchymal stem cells:An attractive treatment strategy for metabolic dysfunction-associated steatotic liver disease?

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World Journal of Stem Cells 2024年第10期16卷 854-859页

作者： Xiao-qian Shan lan Zhao First Teaching Hospital of Tianjin University of Traditional Chinese Medicine National Clinical Research Center for Chinese Medicine Acupuncture and MoxibustionTianjin 300381China

The intrinsic heterogeneity of metabolic dysfunction-associated fatty liver disease(MASLD)and the intricate pathogenesis have impeded the advancement and clinical implementation of therapeutic interventions,underscoring the critical demand for novel treatments.A recent publication by Li et al proposes mesenchymal stem cells as promising effectors for the treatment of *** editorial is a continuum of the article published by Jiang et al which focuses on the significance of strategies to enhance the functionality of mesenchymal stem cells to improve efficacy in curing MASLD,including physical pretreatment,drug or chemical pretreatment,pretreatment with bioactive substances,and genetic engineering.

关键词： Metabolic dysfunction-associated fatty liver disease Mesenchymal stem cells Preprocess Cell survival Therapeutic strategy

Data Mining for Mesoscopic Simulation of Electron Beam Selective Melting

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Engineering 2019年第4期5卷 746-754页

作者： ya qian Wentao yan Feng Lin Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing Tsinghua UniversityBeijing 100084China Department of Mechanical Engineering National University of SingaporeSingapore 117576Singapore

In the electron beam selective melting(EBSM)process,the quality of each deposited melt track has an effect on the properties of the manufactured ***,the formation of the melt track is governed by various physical phenomena and influenced by various process parameters,and the correlation of these parameters is complicated and difficult to establish *** mesoscopic modeling technique was recently introduced as a means of simulating the electron beam(EB)melting process and revealing the formation mechanisms of specific melt track ***,the correlation between the process parameters and the melt track features has not yet been quantitatively *** paper investigates the morphological features of the melt track from the results of mesoscopic simulation,while introducing key descriptive indexes such as melt track width and height in order to numerically assess the deposition *** effects of various processing parameters are also quantitatively investigated,and the correlation between the processing conditions and the melt track features is thereby ***,a simulation-driven optimization framework consisting of mesoscopic modeling and data mining is proposed,and its potential and limitations are discussed.

关键词： Electron beam selective melting Mesoscopic modeling Data mining

Entanglement of two Jaynes-Cummings atoms in single-excitation space

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Communications in Theoretical Physics 2021年第2期73卷 52-58页

作者： ya yang yan Liu Jing Lu lan Zhou Key Laboratory of Low Dimensional Quantum Strncures and Quantum Control of Ministry of Education Department of Phlysics and Synergetic Innovation Center of Quantum Effects and ApplicationsKey Laboratory for Matter Microstructure and Function of Hunan ProvinceHunan Normal UniversityChangsha 410081China Collge of Physics and Electronic Engineering Hengyang Normal UniversityHengyang 421002China

We study the entanglement dynamics of two atoms coupled to their own Jaynes-Cummings cavities in single-excitation ***,we use concurrence to measure atomic entanglement,and consider the Bell-like states to be initial *** analysis suggests that collapse and revival take place in entanglement *** physical mechanism behind entanglement dynamics is periodic information and energy exchange between atoms and light *** the initial Bell-like states,evolutionary periodicity of the atomic entanglement can only be found if the ratio of the two atom-cavity coupling strengths is a rational ***,whether there is a time translation between two kinds of initial Bel-like state depends on odd versus even numbers of the coupling strength ratio.

关键词： cavity optomechanics Jaynes-Cummings cavities single excitation entanglement dynamics

Future livestock breeding： Precision breeding based on multiomics information and population personalization

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Journal of Integrative Agriculture 2017年第12期16卷 2784-2791页

作者： yaNG ya-lan ZHOU Rong LI Kui Institute of Animal Science Chinese A cademy of Agricultural Sciences Beijing 100193 P.R. China

With the rapid development of molecular biology and related disciplines, animal breeding has moved from conventional breeding to molecular breeding. Marker-assisted selection and genomic selection have become mainstream practices in molecular breeding of livestock. However, these techniques only use information from genomic variation but not multi-omics information, thus do not fully explain the molecular basis of phenotypic variations in complex traits. In addition, the accuracy of breeding value estimation based on these techniques is occasionally controversial in different populations or varieties. Given the rapid development of high-throughput sequencing techniques and functional genome and dramatic reductions in the overall cost of sequencing, it is possible to clarify the interactions between genes and formation of phenotypes using massive sets of omic-level data from studies of the transcriptome, proteome, epigenome, and metabolome. During livestock breeding, multi-omics information regarding breeding populations and individuals should be taken into account. The interactive regulatory networks governing gene regulation and phenotype formation in diverse livestock population, varieties and species should be analyzed. In addition, a multi-omics regulatory breeding model should be constructed. Precision, population-personalized breeding is expected to become a crucial practice in future livestock breeding. Precision breeding of individuals can be achieved by combining population genomic information at multi-omics levels together with genomic selection and genome editing techniques.

关键词： livestock breeding multi-omics population personalization