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Influence of vegetation parameters on runoff and sediment characteristics in patterned Artemisia capillaris plots

Journal of Arid Land 2014年第3期6卷 352-360页

作者： GuanHua ZHANG GuoBin LIU PingCang ZHANG liang yi Department of Soil and Water Conservation Changjiang River Scientific Research Institute State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources Institute of Soil and Water Conservation Northwest A&F University Hubei Academy of Environmental Sciences

Vegetation patterns are important in the regulation of earth surface hydrological processes in arid and semi-arid areas. Laboratory-simulated rainfall experiments were used at the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Yangling, northwestern China, to quantify the effects of Artemisia capillaris patterns on runoff and soil loss. The quantitative relationships between runoff/sediment yield and vegetation parameters were also thoroughly analyzed using the path analysis method for identifying the reduction mechanism of vegetation on soil erosion. A simulated rainfall intensity of 90 mm/h was applied on a control plot without vegetation （Co） and on the other three different vegetation distribution patterns： a checkerboard pattern （CP）, a banded pattern perpendicular to the slope direction （BP）, and a single long strip parallel to the slope direction （LP）. Each patterned plot received two sets of experiments, i.e. intact plants and roots only, respectively. All treatments had three replicates. The results showed that all the three other different patterns （CP, BP and LP） of A. capillaris could effectively reduce the runoff and sediment yield. Compared with Co, the other three intact plant plots had a 12%-25% less runoff and 58%-92% less sediment. Roots contributed more to sediment reduction （46%-70%）, whereas shoots contributed more to runoff reduction （57%-81%）. BP and CP exhibited preferable controlling effects on soil erosion compared with LP. Path analysis indicated that root length density and plant number were key parameters influencing runoff rate, while root surface area density and root weight density were central indicators affecting sediment rate. The results indicated that an appropriate increase of sowing density has practical significance in conserving soil and water.

关键词： arid and semi-arid areas Artemisia capillaris patches runoff and sediment roots and shoots vegetation parameters

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In situ deformation behavior of TC21 titanium alloy with different α morphologies(equiaxed/lamellar)

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Rare Metals 2021年第5期40卷 1173-1181页

作者： Wei Long Mei-Gui Ou Xi-Qin Mao yi-Long liang College of Materials and Metallurgy Guizhou UniversityGuiyang 550025China Key Laboratory for Materials Structure and Strength of Guizhou Province Guizhou UniversityGuiyang 550025China National Local Joint Engineering Laboratory for High Performance Metal Structure Materials and Manufacturing Technology Guizhou UniversityGuiyang 550025China

To study the effect ofαphase morphology(equiaxedα(αE)/lamellarα(αL))on the in situ tensile behavior of TC21 alloy,the slip band,dislocation,crack initiation,and propagation were analyzed by scanning electron microscopy(SEM)with in situ tensile stage and transmission electron microscopy(TEM).The results show that the slip bands first concentrate in theαE phases and easily truncate at theα/βphase boundaries,whereas the slip bands move across theαlamellae in theαL *** are easily generated inαE orα/βphase boundaries with large plastic *** the quantity ofαL is more thanαE,the crack tip is more easily deflected atαphases orαclusters with different orientations,making the main crack propagation path more *** the volume fraction ratio ofαE toαL is~3:4,i.e.,the volume fraction ofαE is close to that ofαL,TC21 alloy exhibits better strength and slower crack propagation rate.

关键词： In situ tensile TC21 alloy Equiaxed Lamellar αPhase

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A new cooperative approach for ST-elevation myocardial infarction patients to receive timely and effective percutaneous coronary reperfusion in China

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Journal of Geriatric Cardiology 2016年第7期13卷 602-607页

作者： Jin-Chuan YAN Yang YAN Cui-Ping WANG liang-Jie XU yi liang Department of Cardiology Affiliated Hospital of Jiangsu University Zhenjiang Jiangsu China Medical School of Jiangsu University Zhenjiang Jiangsu China

Background Acute myocardial infarction （AMI） is the most serious type of coronary heart disease. However, less than 30% of these patients have been treated effectively in China. Delayed treatment is a leading cause. This study aimed to evaluate a new regional cooperative model for improving the first medical contact-to-device time and the therapeutic effects on AMI patients. Methods A retrospective analysis of 458 ST-elevation myocardial infarction （STEMI） patients was performed. Patients were divided into two groups in terms of before or after the model were implemented. First medical contact-to-device time （FMC2D）, Door to device time （D2D）, referral time, cardiac functions, mean cost, days of hospitalization, and major adverse cardiac events （MACE） were analyzed. Results The mean FMC2D time, D2D time and referral time of the model group were significantly lower than the control group. The left ventricular ejection fraction of the model group increased but the left ventricular end-diastolic dimension decreased compared with the control group at 6 months after discharge. These re- sults also showed that mean costs and days of hospitalization were reduced. The MACE rate was reduced in the model group. Conclusions These results suggested that the new model decreased the FMC2D time, which could improve the cardiac function and therapeutic effect of STEMI patients as well as decreased the financial burden.

关键词： Acute myocardial infarction First medical contact Regional cooperative rescue model

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Sustainability Evaluation of Modern Photovoltaic Agriculture Based on Interval Type-2 Fuzzy AHP-TOPSIS and Least Squares Support Vector Machine Optimized by Fireworks Algorithm

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Energy Engineering 2022年第1期119卷 163-188页

作者： yi liang Haichao Wang Wei-Chiang Hong School of Management Hebei GEO UniversityShijiazhuang050031China Strategy and Management Base of Mineral Resources in Hebei Province Hebei GEO UniversityShijiazhuang050031China Long Yuan(Beijing)Wind Power Engineering&Consulting Co. Ltd.Beijing100034China Department of Information Management Oriental Institute of TechnologyNew TaipeiTaiwanChina

Photovoltaics(PV)has been combined with many other industries,such as *** there are many problems for the sustainability of PV *** and accurate sustainability evaluation of modern photovoltaic agriculture is of great significance for accelerating the sustainable development of modern photovoltaic *** order to improve the timeliness and accuracy of evaluation,this paper proposes an evaluation model based on interval type-2 Fuzzy AHP-TOPSIS and least squares support vector machine optimized by fireworks ***,the criteria system of modern photovoltaic agriculture sustainability is constructed from three dimensions including technology sustainability,economic sustainability and social ***,analytic hierarchy process(AHP)and technique for order preference by similarity to an ideal solution(TOPSIS)methods are improved by using interval type-2 fuzzy theory,and the traditional evaluation model based on interval type-2 Fuzzy AHP-TOPSIS is obtained,and the improved model is used for comprehensive *** that,the optimal parameters of least squares support vector machine(LSSVM)model are obtained by Fireworks algorithm(FWA)training,and the intelligent evaluationmodel for the sustainability of modern photovoltaic agriculture is constructed to realize fast and intelligent ***,an empirical analysis is conducted to demonstrate the scientificity and accuracy of the proposed *** study is conducive to the comprehensive evaluation of the sustainability of modern photovoltaic agriculture,and can provide decision-making support for more reasonable development model in the future of modern photovoltaic agriculture.

关键词： Modern photovoltaic agriculture sustainability evaluation interval type-2 fuzzy numbers AHP TOPSIS FWA LSSVM

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Laboratory investigations of earthquake-and landslideinduced composite surges

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Journal of Mountain Science 2017年第8期14卷 1537-1549页

作者： AI Hong-zhou YAO Ling-kan ZHOU yi-liang School of Civil Engineering Southwest Jiaotong University Road and Railway Engineering Research Institute Sichuan Key Laboratory of Seismic Engineering and Technology MOE Key Laboratory of High-speed Railway Engineering

Seismic surges and landslides are both major secondary mountain hazards during an earthquake. This paper investigates earthquake-and landslide-induced composite surges through largescale shaking table water tank model experiments. A series of tests were conducted for various initial water depths, peak ground accelerations, slide impact velocities, and slide volumes. Based on the results of the tests, the effects of these parameters on the maximum wave heights of the earthquake-and landslide-induced composite surges were analyzed. An amplification coefficient of seismic surges was defined, and the prediction equation for the amplification coefficient was developed through nondimensional multiple linear regression analysis. Then, an empirical equation for the maximum wave heights of the composite surges was developed based on the amplification coefficient and Demirel's method. This equation provides a calculation method for earthquake-and landslide-induced composite surge waves.

关键词： Laboratory investigation Earthquake Landslide Composite surge Maximum wave height Wave surge

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An Off-Diagonal Marcinkiewicz Interpolation Theorem on Lorentz Spaces

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Acta Mathematica Sinica,English Series 2011年第8期27卷 1477-1488页

作者： yi Yu liang Li Guang LIU Da Chun YANG School of Mathematical Sciences Beijing Normal UniversityLaboratory of Mathematics and Corr~plex Systems Ministry of Education Beijing 100875 P. R. China Department of Mathematics School of Information Renmin University of China Beijing 100872 P. R. China School of Mathematical Sciences Beijing Normal UniversityLaboratory of Mathematics and Complex Systems Ministry of Education Beijing 100875 P. R. China

Let （X, μ） be a measure space. In this paper, using some ideas from Grafakos and Kalton, the authors establish an off-diagonal Marcinkiewicz interpolation theorem for a quasilinear operator T in Lorentz spaces L^P,q（X） with p, q ￡（0, ∞], which is a corrected version of Theorem 1.4.19 in [Grafakos, L.： Classical Fourier Analysis, Second Edition, Graduate Texts in Math., No. 249, Springer, New York, 2008] and which, in the case that T is linear or nonnegative sublinear, p ￡ [1, ∞） and q ￡ [l,∞）, was obtained by Stein and Weiss [Introduction to Fourier Analysis on Euclidean Spaces, Princeton University Press, Princeton, N.J., 1971].

关键词： Quasilinear operator Marcinkiewicz interpolation theorem Lorentz space restricted weak type estimate

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Pairing symmetry in layered BiS2 compounds driven by electron-electron correlation

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Frontiers of physics 2014年第2期9卷 194-199页

作者： yi liang Xianxin Wu Wei-Feng Tsai Jiangping Hu Institute of Physics Chinese Academy of Sciences Beijing 100190 China Department of Physics Sun Yat-sen University Kaohsiung 804 Taiwan China Department of Physics Purdue University West Lafayette IN 47907 USA

We investigate the pairing symmetry of layered BiS2 compomlds by assuming that electron-electron correlation is still important so that the pairing is rather short range. We lind that the extended .s-wave pairing symmetry always wins over d-wave when the pairing is confined between two short range sites up to next nearest neighbors. The pairing strength is peaked around the doping level ：r = 0.5. which is consistent with experimental observation. The extended s-wave pairing symmetry is very robust against spin orbital coupling because it is mainly determined by the structure of Fermi surfaces, Moreover. the extended s-wave pafiring can be distinguished from conventional swave pairing by measuring and comparing superconducting gaps of different Fermi surfaces.

关键词： s BiS2-based superconductor pairing symmetry electron-electron correlation

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Epigenetic and transcriptional activation of the secretory kinase FAM20C as an oncogene in glioma

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Journal of Genetics and Genomics 2023年第6期50卷 422-433页

作者： Bo Gong yi liang Qian Zhang Huan Li Jialing Xiao liang Wang Han Chen Wenjie Yang Xiaoqing Wang yi Wang Zongze He Department of Health Management Sichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuan 610072China The Key Laboratory for Human Disease Gene Study of Sichuan Province and Institute of Laboratory Medicine Sichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuan 610072China Department of Neurology Sichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuan 610072China Department of Neurosurgery Sichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuan 610072China Department of Pathology Sichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuan 610072China Department of Critical Care Medicine Sichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengduSichuan610072China

Gliomas are the most prevalent and aggressive malignancies of the nervous *** bioinformatic studies have revealed the crucial role of the secretory pathway kinase FAM20C in the prediction of glioma invasion and ***,little is known about the pathogenesis of FAM20C in the regulation of ***,we construct the full-length transcriptome atlas in paired gliomas and observe that 22 genes are upregulated by full-length transcriptome and differential APA *** of ATAC-seq data reveals that both FAM20C and NPTN are the hub genes with chromatin openness and differential ***,in vitro and in vivo studies suggest that FAM20C stimulates the proliferation and metastasis of glioma ***,NPTN,a novel cancer suppressor gene,counteracts the function of FAM20C by inhibiting both the proliferation and migration of *** blockade of FAM20C by neutralizing antibodies results in the regression of xenograft ***,MAX,BRD4,MYC,and REST are found to be the potential trans-active factors for the regulation of *** together,our results uncover the oncogenic role of FAM20C in glioma and shed new light on the treatment of glioma by abolishing FAM20C.

关键词： Glioma Alternativepolyadenylation sites FAM20C Trans-activefactors

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Peak earthquake response of structures under multi-component excitations

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Earthquake Engineering and Engineering Vibration 2007年第4期6卷 357-370页

作者： Jianwei Song Zach liang yi-Lun Chu George C. Lee Department of Civil Structural and Environmental Engineering State University of New York at Buffalo USA

Accurate estimation of the peak seismic responses of structures is important in earthquake resistant design. The internal force distributions and the seismic responses of structures are quite complex, since ground motions are multidirectional. One key issue is the uncertainty of the incident angle between the directions of ground motion and the reference axes of the structure. Different assumed seismic incidences can result in different peak values within the scope of design spectrum analysis for a given structure and earthquake ground motion record combination. Using time history analysis to determine the maximum structural responses excited by a given earthquake record requires repetitive calculations to determine the critical incident angle. This paper presents a transformation approach for relatively accurate and rapid determination of the maximum peak responses of a linear structure subjected to three-dimensional excitations within all possible seismic incident angles. The responses can be deformations, internal forces, strains and so on. An irregular building structure model is established using SAP2000 program. Several typical earthquake records and an artificial white noise are applied to the structure model to illustrate the variation of the maximum structural responses for different incident angles. Numerical results show that for many structural parameters, the variation can be greater than 100%. This method can be directly applied to time history analysis of structures using existing computer software to determine the peak responses without carrying out the analyses for all possible incident angles. It can also be used to verify and/or modify aseismic designs by using response spectrum analysis.

关键词： multi-component ground motion time history analysis peak structural response axis rotation

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Chemical fingerprinting of Su-He-Xiang-Wan and attribution of major characteristic peaks for its quality control by GC-MS

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Journal of Central South University 2013年第8期20卷 2115-2123页

作者： WANG Wei-ping LIN Juan ZHANG liang-xiao ZHANG Ming-yue liang yi-zeng Research Center of Modernization of Chinese Herbal Medicine College of Chemistry and Chemical Engineering Central South University Changsha 410083 China Xinjiang Uygur Autonomous Region Institute for Food and Drug Control Urumqi 830004 China Oilcrops Research Institute Chinese Academy of Agricultural Sciences Wuhan 430062 China

A simple and facile gas chromatography-mass spectrometer （GC-MS） fingerprint of Su-He-Xiang-Wan （SHXW） was developed, the similarity analysis was conducted, and attribution of the major characteristic peaks was identified for SHXW quality control. GC-MS analysis was performed on a QP2010 instrument （Shimadzu, Japan） equipped with a capillary column of RTX-5MS. The column temperature was initiated at 50℃, held for 5 min, increased at the rate of 3 ℃/min to 120 ℃, held for 2 min, and then increased at the rate of 4 ℃/min to 220℃, held for 10 min. Helium carrier gas was used at a constant flow rate of 1.3 mL/min. Mass conditions were ionization voltage, 70 eV; injector temperature, 250℃; ion source temperature, 250 ℃; splitting ratio, 30：1; full scan mode in the 40-500 Da mass ranges with rate of 0.2 s per scan. Attribution of the major characteristic peaks was identified for SHXW by comparing the chemical standards, references of Chinese herbal medicines and the negative controls of prescription samples （NC） of SHXW. With the help of the temperature-programmed retention indices （PTRIs） used together with mass spectra and chemical standards, 25 major characteristic peaks have been identified. Nine volatile medicinal materials were identified in the prescription of SHXW by attributing to the 27 major characteristic peaks. The results demonstrate that the proposed method is a powerful approach to quality control of complex herbal medicines.

关键词： chromatographic fingerprint attribution analysis quality control herbal medicines complex prescription

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