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Evaluation of dual crop coefficient approach on evapotranspiration calculation of cherry trees

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International Journal of Agricultural and Biological Engineering 2016年第3期9卷 29-39页

作者： Tong Guodong liu honglu Li Fahu College of Water Resources and Civil Engineering China Agricultural UniversityBeijing 100083China Beijing Water Science and Technology Institute Beijing 100044China

A simple way to estimate tree evapotranspiration is needed for orchard irrigation schedules and water management practice,and the dual crop coefficient(DCC)approach provides such a *** experiments on cherry trees were conducted in an orchard of Beijing,China,from 2011 to 2013,to test the suitability and reliability of the DCC *** calculated results from the DCC method were compared with those directly measured by water balance(WB)and sap flow(SF)*** showed that total evapotranspiration in the whole growth period of cherry trees obtained by WB,SF and DCC methods was 560.0-569.3 mm,544.7-569.8 mm and 564.1-574.6 mm,*** Nash-Sutcliffe efficiency(NSE)and the ratio of root-mean-square error to the standard deviation of measured data(RSR)showed that the calculated total evapotranspiration by DCC method was consistent to that measured by the WB method at above“Satisfactory”level(0.500.70)for the monthly evapotranspiration and as“Satisfactory”for the total evapotranspiration,respectively when compared with the WB and SF *** coefficients for the whole growth period were similar for all three methods,but the crop coefficient suggested by the DCC method was larger at the beginning and the late growth stages but smaller at the vigorous growth stage of cherry trees than those measured by using the WB and SF *** can be concluded that the DCC method is an effective tool to estimate total evapotranspiration in the whole growth period of cherry tree,but an improvement on accuracy of estimating monthly evapotranspiration of cherry trees is required.

关键词： dual crop coefficient method crop coefficient evapotranspiration sap flow method water balance method

E-service Model in E-government System

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Chinese Business Review 2005年第3期4卷 11-15页

作者： Zhenji Zhang Mincong Tang honglu liu Beijing Jiaotong University

E-service becomes an imperative requirement for E-government development. Successful adoption of E-service into E-government systems could help to palliate the conflict between ＂magnanimity information＂ and the users＇ limits in discriminating and using information. In this paper, we build an E-service model for E-government systems. This model is built for providing instant, active and personalized information customization services for system users according to their individual habits.

关键词： E-service model E-government

China＇s Call Center Development Strategy

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Chinese Business Review 2005年第2期4卷 23-27页

作者： Zhenji Zhang Mincong Tang honglu liu Department of Information Management of Beijing Jiaotong University and commissioner of China Computer Network Application Association Department of Information Management School of Economics and Management of Beijing Jiaotong University Beijing China100044 Ph.D. of Moscow Railway Engineering University of Russia postdoctor of MREU associate prof. of School of Computer Science of Beijing Jiaotong University

Call center technology has been widely used in China, including industries of banking, railway, telecommunication, electron, insurance, and so on. But the actual effects and benefits brought by adoption of call center are really poor. This paper analyzes the situation of call center＇s adoption in several major industries in China and also analyzes the existing problems, From the point of view of strategies of enterprises and call center, this paper puts forward a set of strategic and theoretical suggestions for call center development in China.

关键词： call center China development strategy

Transcriptional pausing induced by ionizing radiation enables the acquisition of radioresistance in nasopharyngeal carcinoma

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Journal of Molecular Cell Biology 2023年第7期15卷 15-30页

作者： honglu liu Huanyi Fu Chunhong Yu Na Zhang Canhua Huang Lu Lv Chunhong Hu Fang Chen Zhiqiang Xiao Zhuohua Zhang Huasong Lu Kai Yuan Hunan Key Laboratory of Molecular Precision Medicine Department of OncologyXiangya HospitalCentral South UniversityChangsha 410008China Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology Life Sciences InstituteZhejiang UniversityHangzhou 310058China Hunan Key Laboratory of Medical Genetics School of Life SciencesCentral South UniversityChangsha 410008China Department of Oncology The Second Xiangya HospitalCentral South UniversityChangsha 410011China Research Center of Carcinogenesis and Targeted Therapy Xiangya HospitalCentral South UniversityChangsha 410008China National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangsha 410008China The Biobank of Xiangya Hospital Central South UniversityChangsha 410008China

Lesions on the DNA template can impact transcription via distinct regulatory *** radiation(IR)as the mainstay modality for many malignancies elicits most of the cytotoxicity by inducing a variety of DNA damages in the *** the IR treatment alters the transcription cycle and whether it contributes to the development of radioresistance remain poorly ***,we report an increase in the paused RNA polymerase II(RNAPII),as indicated by the phosphorylation at serine 5 residue of its C-terminal domain,in recurrent nasopharyngeal carcinoma(NPC)patient samples after IR treatment and cultured NPC cells developing IR *** the pool of paused RNAPII by either inhibiting TFIIH-associated CDK7 or stimulating the positive transcription elongation factor b,a CDK9-CycT1 heterodimer,attenuates IR resistance of NPC ***,the poly(ADP-ribosyl)ation of CycT1,which disrupts its phase separation,is elevated in the IR-resistant *** of the major poly(ADP-ribosyl)ation sites of CycT1 decreases RNAPII pausing and restores IR ***-wide chromatin immunoprecipitation followed by sequencing analyses reveal that several genes involved in radiation response and cell cycle control are subject to the regulation imposed by the paused ***,we identify the NIMA-related kinase NEK7 under such regulation as a new radioresistancefactor,whose downregulation results in the increased chromosome instability,enabling the development of IR ***,our results highlight a novel link between the alteration in the transcription cycle and the acquisition of IR resistance,opening up new opportunities to increase the efficacy of radiotherapy and thwart radioresistance in NpC.

关键词： RNA polymerase II transcriptional pausing radioresistance CDK7 NEK7 nasopharyngeal carcinoma

北京地区典型树种及非生物因子对枯落物水文效应的影响

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农业工程学报 2015年第8期31卷 183-189页

作者：牛勇刘洪禄张志强北京林业大学水土保持学院北京100083 北京市水科学技术研究院北京100044

枯落物层对森林水文循环有着重要的影响。该文以华北土石山区15种典型林分（不同树种、林分密度、立地条件等）条件下的枯落物为研究对象,通过野外调查、室内（泡水、降雨模拟）试验等手段,研究分析了典型林分枯落物的水文效应。研究结... 详细信息

枯落物层对森林水文循环有着重要的影响。该文以华北土石山区15种典型林分（不同树种、林分密度、立地条件等）条件下的枯落物为研究对象,通过野外调查、室内（泡水、降雨模拟）试验等手段,研究分析了典型林分枯落物的水文效应。研究结果表明,阳坡油松林的枯落物蓄积量显著大于阴坡油松林（P〈0.05）,但不同林分密度条件下油松林的枯落物的蓄积量无显著差异（P〉0.05）。不同树种之间有针叶林枯落物蓄积量大于阔叶林的规律。通过不同林分的枯落物浸泡试验和统计发现,不同林分枯落物的最大持水量（water holding capacity,WHC）范围为9.72~48.92 mm,林分密度、枯落物半分解层比例、坡度、枯落物蓄积量对枯落物的最大持水能力的影响依次降低,其中枯落物的最大持水量与林分密度呈二次曲线关系。结合室内人工降雨模拟试验研究发现,降雨量达到35~45 mm时,各典型林分的枯落物截留量达到有效截留量,且有效截留量与最大持水能力的比值范围为40%~91%。

关键词：森林水分水文枯落物截留

外周血miRNA应用于肿瘤早期诊断的研究进展

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中国肿瘤生物治疗杂志 2018年第2期25卷 109-117页

作者：刘洪璐王熙才昆明医科大学第三附属医院暨云南省肿瘤医院肿瘤研究所云南省肿瘤分子标志研究中心詹启敏院士工作站云南昆明650118

微小RNA(microRNA,miRNA)是由20~25个核苷酸组成的非编码RNA分子,其在肿瘤的发生发展过程中起着重要的调节作用,包括癌细胞的增殖、分化、凋亡等,直接影响肿瘤的进展。外周血miRNA相对稳定,比组织miRNA容易获取和检测,是肿瘤早期发现、... 详细信息

微小RNA(microRNA,miRNA)是由20~25个核苷酸组成的非编码RNA分子,其在肿瘤的发生发展过程中起着重要的调节作用,包括癌细胞的增殖、分化、凋亡等,直接影响肿瘤的进展。外周血miRNA相对稳定,比组织miRNA容易获取和检测,是肿瘤早期发现、早期诊断的新一代生物标志物,也是精准医学研究应用的主要发展方向之一。外周血miRNA常用的检测方法主要有逆转录实时荧光定量PCR,电化学检测、NanoString数字化基因检测、基因芯片和高通量测序等。外周血多种miRNA是非小细胞肺癌、食管鳞癌、胰腺癌、头颈鳞状细胞癌、卵巢癌、结直肠癌、乳腺癌、前列腺癌和血液肿瘤的早期诊断标志物,多个外周血miRNA联合检测以及肿瘤特异性miRNA与血清学、影像学等辅助手段联合检测,均可提高肿瘤早期诊断的灵敏度和特异性。

关键词：肿瘤微小RNA 标志物早期诊断

基于GIS技术的北京通州区灌区生态需水研究

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农业工程学报 2007年第2期23卷 42-47,F0002页

作者：潘兴瑶刘洪禄李法虎马明中国科学院地理科学与资源研究所北京市水利科学研究所北京100044 中国农业大学水利与土木工程学院北京100083

生态需水是区域需水的重要组成部分,灌区生态需水是维持灌溉农业持续发展的基础。在对降水、地表水和地下水分析的基础上,利用地理信息系统(GIS)技术对北京市通州区生态系统进行了分类,确定了不同生态系统的生态需水量。结果表明:2003... 详细信息

生态需水是区域需水的重要组成部分,灌区生态需水是维持灌溉农业持续发展的基础。在对降水、地表水和地下水分析的基础上,利用地理信息系统(GIS)技术对北京市通州区生态系统进行了分类,确定了不同生态系统的生态需水量。结果表明:2003年通州区生态需水量为45.33×106m3/a,生态、生活和生产需水量是可供水资源量的1.23倍,用水矛盾较为突出。在采用节水、开发新水源和区外引水等措施后,2010年和2020年研究区的生态、生活和生产需水基本可以得到满足,实现区域水资源的供需平衡。该文研究结果为通州区水资源的合理配置提供了科学依据。

关键词：平原灌区生态需水量地理信息系统(GIS) 水量平衡

The Research Status of Soil Crust and its Effects on Soil Water Erosion

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The Research Status of Soil Crust and its Effects on Soil Wa...

应用Penman-Monteith方程推算北京地区苜蓿的灌溉定额

2005北京都市农业工程科技创新与发展国际学术研讨会

作者： Pan Xingyao Li Fahu liu honglu ( China Agricultural University Beijing Water Resource Institute)

＜正＞Soil crust is one of the most important factors that affect soil water erosion. Research of soil crust formation mechanism is a key to further understand soil infiltration ability, runoff occurrence and their effects on soil water erosion. Formation mechanism of soil crust and its influencing factors were analyzed, effects of soil crust on surface runoff, splash erosion and runoff erosion, and control methods of soil crust formation were discussed. Lack of basic research and quantified research, and unad-vanced research technique and measures are the main disadvantages on research of soil crust. New technology and measures should be adopted to study soil crust microstruc-ture so as to further understanding crust formation mechanism and its influencing factors, and quantificational description about crust effects on soil infiltration, runoff, and soil erosion.

关键词： Soil crust Soil water erosion Effect of soil crust

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农业工程学报 2005年第8期21卷 30-34页

作者：许翠平刘洪禄赵立新北京市水利科学研究所北京100044

该文对应用Penman-Monteith方程和分段单值平均作物系数法推算苜蓿灌溉定额的方法进行了详细的分析,并结合北京市永乐店农业节水中心气象资料和苜蓿试验的有关资料,推算了该地区2003年苜蓿的净灌溉定额,并得到了试验的初步验证,在此基... 详细信息

该文对应用Penman-Monteith方程和分段单值平均作物系数法推算苜蓿灌溉定额的方法进行了详细的分析,并结合北京市永乐店农业节水中心气象资料和苜蓿试验的有关资料,推算了该地区2003年苜蓿的净灌溉定额,并得到了试验的初步验证,在此基础上推算了在永乐店土壤条件下不同水平年及不同节水灌溉方式下的毛灌溉定额,为苜蓿灌溉管理或灌溉计划提供参考依据。该文推算苜蓿灌溉定额的方法也可用于其它作物灌溉用水定额的估算。

关键词： Penman—Monteith方程作物系数灌溉定额用水定额 Penman h方程苜蓿推算北京地区应用