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Mapping Daily Temperature and Precipitation in the Qilian Mountains of Northwest China

Journal of Mountain Science 2014年第4期11卷 896-905页

作者： PENG Shou-zhang ZHAO Chuan-yan WANG Xiao-ping XU Zhong-lin LIU xing-ming HAO Hu YANG Shi-fei State Key Laboratory of Pastoral Agricultural Ecosystem Institute of Arid Agroecology School of Life Sciences Lanzhou University Institute of Arid Meteorology China Meteorological Administration MOE Key Laboratory of Oasis Ecology College of Resource and Environmental Science Xinjiang University Management Bureau of Qilian Mountains National Nature Reserve in Gansu

Daily meteorological data are the critical inputs for distributed hydrological and ecological models. This study modified mountain microclimate simulation model （MTCLIM） with the data from 19 weather stations, and compared and validated two methods （the MTCLIM and the modified MTCLIM） in the Qilian Mountains of Northwest China to estimate daily temperature （i.e., maximum temperature, minimum temperature） and precipitation at six weather stations from i January 2000 to 31December 2009. The algorithm of temperature in modified MTCLIM was improved by constructing the daily linear regression relationship between temperature and elevation, aspect and location information. There are two steps to modify the MTCLIM to predict daily precipitation： firstly, the linear regression relationship was built between annual average precipitation and elevation, location, and vegetation index; secondly, the distance weight for measuring the contribution of each weather station on target point was improved by average wind direction during the rainy season. Several regression analysis and goodness-of-fit indices （i.e., Pearson＇s correlation coefficient, coefficient of determination, mean absolute error, root-mean-square error and modelingefficiency） were used to validate these estimated values. The result showed that the modified MTCLIM had a better performance than the MTCLIM. Therefore, the modified MTCLIM was used to map daily meteorological data in the study area from 2000 to 2009. These results were validated using weather stations with short time data and the predicted accuracy was acceptable. The meteorological data mapped could become inputs for distributed hydrological and ecological models applied in the Qilian Mountains.

关键词： MTCLIM (Mountain microclimatesimulation model) Wind direction Precipitation Temperature Qilian Mountains.

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有色冶炼污染源达标评估和动态管理系统开发

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环境工程技术学报 2014年第3期4卷 231-236页

作者：万斯孙启宏白璐姚扬扈学文杨晓松林星杰汪靖中国环境科学研究院清洁生产与循环经济研究中心国家环境保护生态工业重点实验室北京100012 湖南有色金属研究院环境保护研究所湖南长沙410015 北京师范大学北京100875 北京矿冶研究总院北京100070

确保工业污染达标排放是环境管理的重要方面,达标评估工作需要采取全过程控制的思路,并进行动态跟踪。在污染物排放预测基础上,提出了有色冶炼行业污染源排放达标可行性评估方法,包括排污系数法和排放模型法。开发了有色冶炼污染源达标... 详细信息

确保工业污染达标排放是环境管理的重要方面,达标评估工作需要采取全过程控制的思路,并进行动态跟踪。在污染物排放预测基础上,提出了有色冶炼行业污染源排放达标可行性评估方法,包括排污系数法和排放模型法。开发了有色冶炼污染源达标评估和动态管理系统,利用系统排放模型法评估了A企业阳极炉烟囱污染源排放污染物。结果表明,阳极炉烟囱SO2排放(538 mgm3)不达标,从节能降耗、开展清洁生产审核以及建立环境管理体系等方面提出优化方案,3个方案的SO2排放浓度分别为370、365和292 mgm3,可实现全部达标排放。

关键词：动态管理系统污染源达标评估有色冶炼污染物浓度预测

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The novel long noncoding RNA LOC283070 is involved in the transition of LNCaP cells into androgen-independent cells via its interaction with PHB2

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Asian Journal of Andrology 2018年第5期20卷 511-517页

作者： Ying Zhang Li-Na Wang Ya-Ni lin Yuan-Xin xing Yu Shi Jian Zhao Wei-Wen Chen Bo Han Department of Biochemistry and Molecular Biology School of Basic Medical Sciences Cheeloo College of Medicine Shandong University Jinan 250012 China Department of Clinical Laboratory Medicine The Second Hospital of Shandong University Jinan 250033 China School of Medicine Cheeloo College of Medicine Shandong University Jinan 250012 China Department of Thoracic Surgery Qilu Hospital of Shandong University Jinan 250012 China Key Laboratory for Experimental Teratology of the Ministry of Education and Department of Pathology School of Basic Medical Sciences Cheeloo College of Medicine Shandong University Department of Pathology Qilu Hospital of Shandong University Jinan 250012 China

We sought to investigate the underlying mechanism of action of the long noncoding RNA （IncRNA） LOC283070 in the development of androgen independence in prostate cancer. The interactions between LOC283070 and target proteins were investigated by RNA pull-down and RNA-binding protein immunoprecipitation （RIP） assays. Subceilular fractionation and quantitative reverse transcription-polymerase chain reaction （qRT-PCR） were used to detect the subcellular localization of LOC283070. Western blotting was performed to detect the expression of prohibitin 2 （PHB2）. Luciferase activity assays were performed to evaluate the effects of LOC283070 and PHB2 on the androgen receptor （AR） signaling pathway. A methyl thiazolyl tetrazolium （MTT） assay and a growth curve assay were used to test cell viability. Flow cytometry was performed to analyze cell cycles. A transwell assay was employed to test cell migration. We identified PHB2 as an interaction partner of LOC283070 in the pull-down and RIP experiments. Furthermore, we confirmed that the enrichment of L0C283070 with PHB2 in androgen-independent LNCaP （LNCaP-AI） cells was much greater than that in LNCaP cells. Moreover, the expression of PHB2 was not significantly different between the two cell lines, and the expression of LOC283070 in the nuclei of the LNCaP-AI cells was significantly greater than that in the LNCaP cells. In vitro data revealed that PHB2 overexpression significantly inhibited AR activity and cell proliferation and migration and induced accumulation of prostate cancer cells in GO/G1 phase. Moreover, the overexpression of LOC283070 fully abrogated the effects of PHB2 overexpression. In conclusion, we found that LOC283070 can bind to PHB2 located in the nucleus and inhibit its effect, and this is one of the mechanisms by which LOC283070 is involved in the transition of LNCaP cells into androgen-independent cells.

关键词： androgen-dependent prostate cancer androgen-independent prostate cancer LOC283070 long noncoding RNA prohibitin 2

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TLS-bridged co-prediction of tree-level multifarious stem structure variables from worldview-2 panchromatic imagery: a case study of the boreal forest

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International Journal of Digital Earth 2017年第7期10卷 701-718页

作者： Yi lin Tian Wei Bin Yang Yuri Knyazikhin Yuhu Zhang Hisashi Sato xing Fang Xinlian Liang Lei Yan Shanlin Sun Institute of Remote Sensing and GIS Beijing Key Lab of Spatial Information Integration and Its ApplicationsSchool of Earth and Space SciencesPeking UniversityBeijingPeople’s Republic of China North China University of Science and Technology TangshanPeople’s Republic of China Department of Earth and Environment Boston UniversityBostonUSA College of Resources Environment and Tourism Capital Normal UniversityBeijingPeople’s Republic of China Research Institute for Global Change JAMSTECKanagawaJapan School of Geodesy and Geomatics Wuhan UniversityWuhanPeople’s Republic of China Finnish Geospatial Research Institute MasalaFinland Guilin University of Aerospace Technology GuilinPeople’s Republic of China

In forest ecosystem studies,tree stem structure variables(SSVs)proved to be an essential kind of parameters,and now simultaneously deriving SSVs of as many kinds as possible at large scales is preferred for enhancing the frontier studies on marcoecosystem ecology and global carbon *** this newly emerging task,satellite imagery such as WorldView-2 panchromatic images(WPIs)is used as a potential solution for co-prediction of tree-level multifarious SSVs,with static terrestrial laser scanning(TLS)assumed as a‘bridge’.The specific operation is to pursue the allometric relationships between TLS-derived SSVs and WPI-derived feature parameters,and regression analyses with one or multiple explanatory variables are applied to deduce the prediction models(termed as Model1s and Model2s).In the case of Picea abies,Pinus sylvestris,Populus tremul and Quercus robur in a boreal forest,tests showed that Model1s and Model2s for different tree species can be derived(*** maximum R^(2)=0.574 for ***).Overall,this study basically validated the algorithm proposed for co-prediction of multifarious SSVs,and the contribution is equivalent to developing a viable solution for SSV-estimation upscaling,which is useful for large-scale investigations of forest understory,macroecosystem ecology,global vegetation dynamics and global carbon cycle.

关键词： Tree stem structure variable(SSV) WorldView-2 panchromatic image(WPI) static terrestrial laser scanning(TLS) allometric relationship co-prediction model

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A perceptual and predictive batch-processing memory scheduling strategy for a CPU-GPU heterogeneous system

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Frontiers of Information Technology & Electronic Engineering 2023年第7期24卷 994-1006页

作者： Juan FANG Sheng lin Huijing YANG Yixiang XU xing SU SU Faculty of Information Technology Beijing University of TechnologyBeijing 100124China

When multiple central processing unit(CPU)cores and integrated graphics processing units(GPUs)share off-chip main memory,CPU and GPU applications compete for the critical memory *** causes serious resource competition and has a negative impact on the overall performance of the *** describe the competition for shared-memory resources in a CPU-GPU heterogeneous multi-core architecture,and a sharedmemory request scheduling strategy based on perceptual and predictive batch-processing is *** sensing the CPU and GPU memory request conditions in the request buffer,the proposed scheduling strategy estimates the GPU latency tolerance and reduces mutual interference between CPU and GPU by processing CPU or GPU memory requests in *** to the simulation results,the scheduling strategy improves CPU performance by8.53%and reduces mutual interference by 10.38%with low hardware complexity.

关键词： CPU-GPU heterogeneous Multi-core Unified memory Access scheduling

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The first photometric investigation of the contact binary OQ Cam

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Research in Astronomy and Astrophysics 2020年第11期20卷 252-258页

作者： Ya-Ni Guo Kai Li Qi-Qi Xia xing Gao lin-Qiao Jiang Yuan Liu Shandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment School of Space Science and PhysicsInstitute of Space SciencesShandong UniversityWeihai 264209China Xinjiang Astronomical Observatory Urumqi 830011China Artificial Intelligence Key Laboratory of Sichuan Province Sichuan University of Science&EngineeringZigong 643000China Qilu Institute of Technology Jinan 250200China

The first charge-coupled device photometric light curves in B,V,Rc,and Ic bands of the short-period contact binary star OQ Cam are *** analyzing the light curves with the WilsonDevinney code,it is found that OQ Cam is a W-type shallow contact binary star with a contact degree of f=20.2%.Based on the O-C analyzing,the orbit period displays a long term increasing with a rate of d P/dt=4.40×10^-7 d *** increasing in orbit period can be interpreted by mass transfer from the less massive component to the more massive *** the orbit period increases,OQ Cam would evolve from the present shallow contact configuration to a non-contact *** it may be a potential candidate to confirm the thermal relaxation oscillation theory.

关键词： stars binaries close stars binaries eclipsing stars evolution stars individual(OQ Cam)

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High Expression of Fibronectin 1 Predicts a Poor Prognosis in Glioblastoma

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Current Medical Science 2022年第5期42卷 1055-1065页

作者： Song WU Chang LIU xing WEI Wei-xia NONG Li-na lin Feng LI Xiao-xun XIE xing-sheng LIAO Bin LUO Qing-mei ZHANG Shao-wen XIAO Department of Neurosurgery the First Affiliated HospitalGuangxi Medical UniversityNanning530021China Department of Histology and Embryology School of Pre-clinical MedicineGuangxi Medical UniversityNanning530021China Central Laboratory of Pre-Clinical Medicine(Key Laboratory of Guangxi Colleges and Universities) Guangxi Medical UniversityNanning530021China Key Laboratory of Early Prevention and Treatment of Regional High Frequency Tumor(Guangxi Medical University) Ministry of EducationNanning530021China Department of Neurology the First Affiliated HospitalGuangxi Medical UniversityNanning530021China

Objective Glioblastoma multiforme(GBM),the most malignant intracranial neoplasm,is associated with a high mortality and recurrence rate due to the aggressive nature and heterogeneity of the *** of the molecular markers involved in the tumorigenesis of GBM are essential in prognosis,diagnosis,and *** to the limitations of therapeutic effects,this study aims to explore novel biomarkers with prognostic value and to provide new insights into therapeutic *** The expression profile of mRNAs in GBM was detected by RNA-sequencing,and differentially expressed genes were identified by integrating the data from RNA-seq results and the GEPIA2 *** the total 40 hub genes,FN1,P4HB,and PPIB showed prognostic significance based on both GEPIA2 and CGGA *** validation of FN1,P4HB,and PPIB expression by qPCR and correlation analysis with clinicopathological features were performed in 41 GBM tissues from our *** Kaplan-Meier analysis revealed that FN1 and P4HB expressions levels were related to the overall survival(OS)of GBM patients(P<0.05).Multivariate analysis showed that FN1 overexpression(HR=9.199,P=0.002)was an independent and unfavorable prognostic factor for GBM *** median survival time was 8.5 months and 21 months for high and low expressions of FN1,*** It was suggested that FN1 could be an ideal target for prognosis and a potential therapeutic target in GBM.

关键词： glioblastoma FN1 overall survival prognosis

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Variations in microbial community during nitrogen removal by in situ oxygen-enhanced indigenous nitrogen-removal bacteria

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Water Science and Engineering 2018年第4期11卷 276-287页

作者： Shi-lei Zhou Yue Sun Yi-ran Zhang Ting-lin Huang Zai-xing Li Kai-kai Fang Chun-hua Zhang School of Environmental Science and Engineering Hebei University of Science and Technology Shijiazhuang 050018 China Key Laboratory of Northwest Water Resource Environment and Ecology Ministry of Education Xi'an University of Architecture and Technology Xi'an 710055 China

In this study, the enclosure system exhibited perfect nitrogen removal performance with in situ oxygen-enhanced indigenous aerobic denitrifying bacteria in an enclosure experiment. We explored changes in the microbial community during the nitrogen removal process using the MiSeq high-throughput sequencing technology. The results revealed a total of 7974 and 33653 operational taxonomic units(OTUs) for water and sediment systems, respectively, with 97% similarity. The OTUs were found to be affiliated with eight main phyla(Proteobacteria, Actinobacteria, Cyanobacteria, Bacteroidetes, Planctomycetes, Chloroflexi, Firmicutes, and Actinobacteria). The diversity of the enhanced system was found to be higher than that of the control system. Principal component analysis(PCA) revealed that significant spatial and temporal differences were exhibited in the microbial community during nitrogen removal in the enclosure experiment. Redundancy analysis(RDA)indicated that physical parameters(temperature, dissolved oxygen, and pH), nitrogen(total nitrogen and nitrate), functional genes(nirK and nirS), and dissolved organic carbon(DOC) were the most important factors affecting bacterial community function and composition. Lastly, the results suggested that the variation in the microbial community could be analyzed through the MiSeq high-throughput sequencing technology,which may provide technical support for future field tests.

关键词： Nitrogen removal MiSeq high-throughput sequencing technology In situ enclosure RDA Drinking water reservoir

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Performance of a small AT-TPC prototype

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Nuclear Science and Techniques 2018年第7期29卷 138-144页

作者： Jin-Yan Xu Qi-Te Li Yan-lin Ye Jian Gao Jia-xing Han Shi-Wei Bai Ka-Hou Ng School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University

A small prototype of an active-target time projection chamber detector based on the gas electron multiplier(GEM) readout technique was designed and *** calculations were performed to analyze the electric field distribution and optimize the *** particular,a guard ring installed above the GEM foil may play an important role in shaping the electric field in the gas vessel and improving the overall performance of the *** best results were obtained at a guard-ring voltage of-950 *** using a collimated a-particle source,an energy resolution of 3.6–4.0 ke V can be achieved for deposited energies of 18–21 keV,respectively.A position resolution of less 0.2 mm was observed along the electron drift direction,whereas the resolution in the readout plane was approximately 0.45 mm.A time resolution of less than 20 ns was *** using helium as the primary working gas as well as the target material,a t a elastic scattering events can be clearly imaged.

关键词：原型性能优化设计模拟计算工作气体宝石时间电子

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Invariant-mass distribution of top-quark pairs and top-quark mass determination

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Chinese Physics C 2020年第9期44卷 1-6页

作者： Wan-Li Ju Guoxing Wang xing Wang Xiaofeng Xu Yongqi Xu Li lin Yang School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China Institute for Particle Physics Phenomenology Durham UniversityDurham DH13LEUK PRISMA+Cluster of Excellence&Mainz Institute for Theoretical Physics Johannes Gutenberg University55099 MainzGermany Institut für Theoretische Physik Universität BernSidlerstrasse 5CH-3012 BernSwitzerland Zhejiang Institute of Modern Physics Department of PhysicsZhejiang UniversityHangzhou 310027China

In this study,we investigate the invariant-mass distribution of top-quark pairs near the 2mt threshold,which strongly influences the determination of the top-quark mass ***-order non-relativistic corrections lead to large contributions,which are not included in the state-of-the-art theoretical predictions.A factorization formula is derived to resum such corrections to all orders in the strong-coupling,and necessary ingredients are calculated to perform the resummation at next-to-leading *** combine the resummation with fixed-order results and present phenomenologically relevant numerical *** resummation effect significantly increases the differential cross-section in the threshold region and makes the theoretical prediction more compatible with experimental *** estimate that using our prediction in the determination of mt will lead to a value closer to the direct measurement result.

关键词： top quark QCD resummation

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