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基于生态系统服务簇分析的福州都市圈生态保护空缺识别研究

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园林 2025年第1期42卷 14-22+63页

作者：李秋蓉廖凌云福建农林大学风景园林与艺术学院武夷山国家公园研究院

在快速城市化背景下，都市圈面临经济发展和生态保护之间不协调的问题。以福州都市圈为例，运用In VEST模型评估2020年生境质量、碳固存、土壤保持、水源涵养4项关键生态系统服务，分析其空间分布特征，基于此利用SOM聚类分析福州都市... 详细信息

在快速城市化背景下，都市圈面临经济发展和生态保护之间不协调的问题。以福州都市圈为例，运用In VEST模型评估2020年生境质量、碳固存、土壤保持、水源涵养4项关键生态系统服务，分析其空间分布特征，基于此利用SOM聚类分析福州都市圈的生态系统服务簇，识别空间特征和主导生态系统服务簇，进而识别福州都市圈生态保护空缺。结果表明：（1）2020年福州都市圈生态系统服务呈现“西北高，东南低”的空间格局，中部生态系统服务价值低；（2）福州都市圈6类生态系统服务簇空间分布具有异质性；（3）福州都市圈核心生态系统服务簇为B5簇，主要用地类型为林地和草地，碳固存、生境质量和土壤保持服务高，水源涵养服务较低，综合生态价值高，其次为B4和B6簇，B2簇生态系统服务较低；（4）福州都市圈保护空缺区域主要分布于鹫峰山脉和戴云山脉，整体保护空缺率为1.85%。研究结果可为福州都市圈区域生态保护与格局优化提供思路。

关键词：生态系统服务簇自然保护地都市圈 SOM聚类分析 InVEST模型

Bibliometric study of sepsis-associated liver injury from 2000 to 2023

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World Journal of Gastroenterology 2024年第30期30卷 3609-3624页

作者： Zheng Zhang Xiao-Jiao Tan hai-Qing Shi Huan Zhang Jian-Bo li Xue-lian liao Department of Critical Care Medicine West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Critical Care Medicine West China Tianfu Hospital of Sichuan UniversityChengdu 610200Sichuan ProvinceChina

BACKGROUND Sepsis-associated liver injury(Sli)is a severe and prevalent complication of *** To explore the literature on Sli via a bibliometric *** Reviews and articles correlated with Sli published from January 1,2000 to October 28,2023 were searched from the Web of Science Core ***,the searched data were analyzed using VOSviewer,CiteSpace,and R *** There were 787 publications involved in this paper,comprising 745 articles and 42 ***,the United States,and Germany are the primary publication sources in this *** related to Sli primarily focused on mechanisms of pathogenesis,as evidenced by analyzing keywords,references,and the counting of original *** studies mainly involved tumor necrosis factor alpha,inflammation,oxidative stress,and nuclear factor-kappa *** There is significant growth in the research on *** investigations primarily involve basic experiments that aimed at uncovering pathogenic *** to the analyzed literature,the identified pathogenic mechanisms and potential therapeutic targets serve as the foundation for translating findings from basic research to clinical applications.

关键词： Sepsis liver injury Bibliometric analysis Cite space VOS viewer

A HYBRID MODEL FOR SIMULATING VELOCITY FIELD OF A RIVER WITH COMPLEX GEOMETRY PLUNGED BY MULTIPLE JETS

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Journal of Hydrodynamics 2006年第6期18卷 752-759页

作者： li lian-xia liao Hua-sheng li Tian-xiang State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University Chengdu 610065China

A hybrid model that combines both physical and numerical models was employed to simulate the velocity field in a river area in complex geometry with multiple plunging jets. The simulation was based on experiments concerning energy dissipation and scour prevention at the Xiluodu Hydropower Station on the Yangtze River. The calculated results indicate that the complex geometry of the river area has a significant influence on the velocity field, especially on the circulation flow pattern at upstream and downstream of the plunging area and on the asymmetric characteristics of the spiral flow near both banks. The scour characteristics of the downstream river bed caused by the multiple jets were also predicted and analyzed according to the characteristics of the calculated velocity field. The good agreement between the simulated and experimental results indicates that the hybrid model can be used to effectively solve complicated 3-D problems with complex geometric and inlet conditions. Such problems may not easily be solved by using either a physical or a numerical model alone, and therefore the method presented in this article is considered to be a practical and effective way of dealing with this kind of problems.

关键词： hybrid models turbulence model scour multiple jets

Sex biased expression of hormone related genes at early stage of sex differentiation in papaya flowers

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Horticulture Research 2021年第1期8卷 2082-2094页

作者： Juan liu li-Yu Chen Ping Zhou Zhenyang liao hai lin Qingyi Yu Ray Ming FAFU and UIUC Joint Center for Genomics and Biotechnology Key Laboratory of GeneticsBreeding and Multiple Utilization of CropsMinistry of EducationFujian Provincial Key Laboratory of Haixia Applied Plant Systems BiologyCollege of Life ScienceFujian Agriculture and Forestry UniversityFuzhou 350002 FujianChina Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Chinese Academy of SciencesWuhan Botanical GardenWuhan 430074China Texas A&M Agrilife Research Center at Dallas Texas A&M University SystemDallasTX 75252USA Department of Plant Pathology&Microbiology Texas A&M UniversityCollege StationTX 77843USA Department of Plant Biology School of Integrative BiologyUniversity of Illinois at Urbana-ChampaignUrbanaIL 61801USA

Sex types of papaya are controlled by a pair of nascent sex chromosomes,but molecular genetic mechanisms of sex determination and sex differentiation in papaya are still *** performed comparative analysis of transcriptomic profiles of male and female floral buds at the early development stage before the initiation of reproductive organ primordia at which there is no morphological difference between male and female flowers.A total of 1734 differentially expressed genes(DEGs)were identified,of which 923 showed female-biased expression and 811 showed male-biased *** annotation revealed that genes related to plant hormone biosynthesis and signaling pathways,especially in abscisic acid and auxin pathways,were overrepresented in the *** factor binding motifs,such as MYB2,GAMYB,and AP2/EREBP,were enriched in the promoters of the hormone-related DEGs,and transcription factors with those motifs also exhibited differential expression between sex *** these DEGs,we also identified 11 genes in the non-recombining region of the papaya sex chromosomes and 9 genes involved in stamen and carpel *** results suggested that sex differentiation in papaya may be regulated by multiple layers of regulation and coordination and involved transcriptional,epigenetic,and phytohormone ***,especially ABA and auxin,transcription factors,and genes in the non-recombination region of the sex chromosome could be involved in this *** findings may facilitate the elucidation of signal transduction and gene interaction in sex differentiation of unisexual flowers in papaya.

关键词： expression flowers papaya

Non-scanning systems for far-infrared radiation detection from laser-induced plasmas

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High Power Laser Science and Engineering 2015年第2期3卷 1-5页

作者： Chun li Guo-Qian liao Yu-Tong li Beijing National Laboratory of Condensed Matter Physics Institute of Physics CAS IFSA Collaborative Innovation Center Shanghai Jiao Tong University

With the development of ultraintense terawatt(TW) and petawatt(PW) laser systems, powerful terahertz(THz) radiation from laser–plasma interactions has been reported. Plasma-based THz systems, which are usually operated at extremely low repetition rates, call for single-shot diagnostics. In this paper, various state-of-the-art single-shot detection methods are introduced or designed for measurements and applications involved in high-power plasma-based THz sciences.

关键词： laser–plasma interaction single-shot detection ter

Investigation on low total temperature combustion characteristics of kerosene-fueled supersonic combustor

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Chinese Journal of Aeronautics 2022年第7期35卷 192-208页

作者： Jianping li Kai WANG Guiqian JIAO Zilong liao Jindong li School of Engine and Energy Northwestern Polytechnical UniversityXi’an 710072China

In this paper,the combustion characteristics of kerosene-fueled supersonic combustor under the conditions of Mach number 2.0,the total temperature at 700 K and the total pressure at 520 k Pa(simulated flight Mach number at 3.5)were studied by using the flame stabilizing method of cavity and strut from three aspects such as blockage ratios,kerosene equivalence ratios,location and quantity of injection *** results showed that:(A)The combustor with the strut realized the independent and stable combustion of *** combustion-induced back pressure in the block test with blockage ratio of 20%and 10%destroyed the inlet flow conditions;while the blockage ratio was 7.3%and 5%,the incoming flow conditions when kerosene was burned stably were not destroyed.(B)The kerosene Equivalence Ratio(ER)was more likely to be disturbed upstream than the induced back pressure when it rose,and an excessively high-ER would reduce the combustion efficiency;when the equivalence ratio was constant,the combustion efficiency of the blockage ratio of 7.3%was higher than the blockage ratio of 5%.The combustion efficiencies were 0.86(ER=0.13)and 0.78(ER=0.19)when the blockage ratio was 5%,respectively;the combustion efficiencies were 0.89(ER=0.16)and 0.82(ER=0.19)when the blockage ratio was 7.3%,respectively;the combustion efficiencies were 0.51(ER=0.25),0.81(ER=0.3),0.65(ER=0.34)and0.62(ER=0.42)when the blockage ratio was 20%,respectively.(C)The porous injection provided behind the strut was beneficial to the atomization of kerosene and improved the combustion efficiency of kerosene;the second injection after the cavity would reduce the combustion efficiency due to insufficient oxygen and combustion *** study expanded the working range of ramjet and provided a reference fuel injection scheme for Turbine-Based Combined Cycle(TBCC)engine.

关键词： Blockage ratio Combustion characteristics Combustion efficiency Kerosene equivalence ratio Low temperature

Synthesis of CdSe quantum dots via paraffin liquid and oleic acid

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第1期9卷 133-136页

作者： Yu-feng liao Wen-jiang li Centre for Optical and Electromagnetic Research State Key Laboratory for Modern Optical Instrumentation Joint Research Center of Photonics of the Royal Institute of Technology （Sweden） and Zhejiang University Zhejiang University Hangzhou 310058 China

This paper reported an efficient and rapid method to produce highly monodispersed CdSe quantum dots (QDs), in which the traditional trioctylphosphine oxide (TOPO) was replaced by paraffin liquid as solvent and oleic acid as the reacting media. The experimental conditions and the properties of QDs had been studied in detail. The resulting samples were confirmed of uniform size distribution with transmission electronic microscopy (TEM), while UV-vis absorption and photoluminescence (PL) spectra clearly indicated that such synthesized QDs had good fluorescence properties.

关键词： CdSe Synthesis Quantum dots (QDs) Fluorescence

Effects of microenvironment and biological behavior on the paracrine function of stem cells

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Genes & Diseases 2024年第1期11卷 135-147页

作者： Zhixin Xue Yunjun liao Ye li The Department of Plastic and Cosmetic Surgery Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong 510515China

Mesenchymal stem cells(MSCs),the most well-studied cell type in the field of stem cell therapy,have multi-lineage differentiation and self-renewal ***-based thera-pies have been used to treat diverse diseases because of their ability to potently repair tissue and locally restore *** increasing body of evidence demonstrates that paracrine func-tion is central to the effects of MsC-based *** factors,cytokines,chemokines,extracellular matrix components,and extracellular vehicles all contribute to the beneficial ef-fects of MSCs on tissue regeneration and *** paracrine substances secreted by MSCs change depending on the tissue microenvironment and biological *** this review,we discuss the bioactive substances secreted by MsCs depending on the microenvironment and biological behavior and their regulatory mechanisms,which explain their potential to treat human diseases,to provide new ideas for further research and clinical cell-free therapy.

关键词： Bioactive behavior Mesenchymal stem cells Microenvironment Paracrine Secretome

Role of oxygen vacancies and Sr sites in SrCo_(0.8)Fe_(0.2)O_3 perovskite on efficient activation of peroxymonosulfate towards the degradation of aqueous organic pollutants

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Chinese Journal of Chemical Engineering 2021年第12期34卷 269-277页

作者： li Yang Yong Jiao Dongyan Jia Yanzhi li Chuanhua liao School of Energy Science and Engineering Nanjing Tech UniversityNanjing 211816China School of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211816China

Metal-based perovskite oxides have contributed significantly to the advanced oxidation processes(AOPs)due to their diverse active sites and excellent compositional/structural *** this study,we specially designed a perovskite oxide with abundant oxygen vacancies,SrCo_(0.8)Fe_(0.2)O_(3)(SCF),and firstly applied it as a catalyst in peroxymonosulfate(PMS) activation towards organic pollutants *** result revealed that the prepared SCF catalyst exhibited excellent performance on organic compounds ***,SCF showed much better activity than La_(0.5)Sr_(0.5)Co_(0.8)Fe_(0.2)O_(3)(LSCF) in terms of reaction rate and stability for the degradation of the organic *** on the analysis of scanning electron microscope,transmission electron microscope,X-ray diffraction,N_(2) adsorption-desorption,X-ray photoelectron spectroscopy and electron paramagnetic resonance,it was confirmed that the perovskite catalysts with high content of Sr doping at A-site could effectively create a defect-rich surface and optimize its physicochemical properties,which was responsible for the excellent heterogeneous catalytic activity of *** can generate three highly active species:~1 O_(2),SO_(4)^(-)· and ·OH in PMS activation,revealing the degradation process of organic compounds was a coupled multiple active species in both radical and nonradical ***,it was mainly in a radical pathway in the degradation through PMS activation on SCF and SO_(4)^(-)· radicals produced were the dominant species in SCF/PMS *** study demonstrated that perovskite-type catalysts could enrich OVs efficiently by doping strategy and regulate the PMS activation towards sulfate radical-based AOPs.

关键词： Perovskite Catalysis Activation of peroxymonosulfate Active oxygen species Degradation of organic compounds