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| 1 | 利用热脉冲-时域反射技术测定土壤水热动态和物理参数 Ⅰ.原理显示文摘由于土壤特性的时空变异性 ,对土壤含水量、温度、热特性以及其它物理参数的动态监测是土壤学研究的重要课题。本文以热脉冲技术和时域反射技术的理论为基础 ,介绍了利用热脉冲技术 时域反射技术 (Thermo TDR)连续定位测定土壤含水量、电导率、温度和热特性的原理 ,并利用土壤热特性与容重和含水量的关系 ,导出了土壤容重、饱和度和通气孔度的计算公式。 | 任图生 邵明安 巨兆强 Horton Robert | 2004 | 土壤学报2004,41,2: | 47 |
| 2 | 不同质地和夹层位置对层状土入渗规律的影响显示文摘为了对比夹层位置和土壤质地变化对层状土入渗特征的影响,选用2种土壤、设置3个夹层位置进行了积水入渗试验.结果表明:在夹层位置为距土表5~10,10~15和20~25 cm这3种情况下,湿润锋到达土层界面的时间和相应的累积入渗量随夹层位置和夹层土壤质地的差异而有所不同.夹层的层位越靠上,湿润锋到达夹层分界线所需要的时间越短,相应的累积入渗量越小.距土表10~15 cm的夹层位置减渗效果最好;夹砂层位置越深,其对入渗率的改变程度越明显,入渗率曲线整体抬高.累积入渗量及湿润锋在水分进入夹层界面前随时间延长而非线性递增,而在水分进入层界面之后趋于线性变化,两者之间具有概化的线性关系,且其线性关系随夹层位置的变化而不同.层状土的土壤含水率分布具有不连续性,同时还受夹层土壤质地的影响.总体上,夹层位置变化对不同质地层状土的入渗有明显影响. | 李毅 任鑫 Horton Robert | 2012 | 排灌机械工程学报2012,30,4: | 32 |
| 3 | 推求土壤水分运动参数的简单入渗法──Ⅱ.实验验证显示文摘预报土壤中水分流动需要的土壤导水特性可通过观测水平土柱的入渗过程来确定,这一观测过程的分析是基于对Richards方程求积分解。土壤水分特征曲线中的参数由观测的水平立柱的特征湿润长度和吸力来确定,非饱和土壤导水率由已确定的特征曲线中的参数和测定的饱和导水率导出。供试土壤有三种,它们的质地从砂壤到粘壤。由这种方法所确定的这三种土壤的水分特征曲线与实测的特征曲线符合良好,所确定的砂壤的非他和导水率与实测值的比较令人满意。利用数值法和积分法分别计算了土壤含水量剖面,计算结果吻合良好,说明了这种方法的合理性。 | 邵明安 王全九 Robert Horton | 2000 | 土壤学报2000,37,2: | 33 |
| 4 | 青藏东北缘早第三纪盆地充填的沉积型式及构造背景——以囊谦和下拉秀盆地为例显示文摘一系列中小型早第三纪红色盆地出露于青藏高原的东北缘 ,它们是在印度—欧亚板块碰撞过程中因陆壳变形和高原隆升产生的。典型早第三纪盆地的地质填图和详细的沉积学研究 ,及构造、沉积和岩浆热事件的综合分析表明 ,这些盆地具有两阶段构造—沉积特征 ,即早期受控于逆冲挤压背景 ,盆地接受底部冲积扇体系的粗碎屑岩段沉积 ,局部伴有岩浆活动 ;晚期受控于走滑—拉分背景 ,盆地充填湖泊—三角洲体系的含膏砂泥岩段夹薄层灰岩 ,并伴有广泛的岩浆作用。青藏东北缘早第三纪盆地在盆地构造格架、沉积层序结构、沉积物组成和岩浆活动等方面均存在明显的阶段性演化。盆地古水流统计和岩浆岩4 0 Ar/ 3 9Ar定年结果表明 ,青藏东北缘早第三纪盆地沉积物主要形成于始新世晚期—渐新世早期 (38~ 2 9Ma)。盆地沉积型式和岩浆活动受印度—欧亚板块碰撞早期逆冲挤压和走滑—拉分构造格局的控制。 | 周江羽 王江海 尹安 Spurlin M S Horton B K | 2002 | 沉积学报2002,20,1: | 30 |
| 5 | 利用热脉冲时域反射技术测定土壤水热动态和物理参数Ⅱ.应用显示文摘土壤含水量、温度、热特性以及其它物理参数的动态监测是描述土壤中各种物理、化学和生物过程的基础。本文利用热脉冲 -时域反射技术 (Thermo -TDR)对不同质地土壤的含水量、电导率、温度、容积热容量、导热率和热扩散系数进行了测定 ,并利用土壤容积热容量与容重和含水量的关系 ,计算了土壤容重、通气孔度和饱和度。结果表明 ,Thermo -TDR技术能够提供可靠的土壤含水量、温度、容重、通气孔度和饱和度的信息。本文也分析了Thermo | 任图生 邵明安 巨兆强 Horton Robert | 2004 | 土壤学报2004,41,4: | 28 |
| 6 | Single and Joint Multifractal Analysis of Soil Particle Size Distributions显示文摘It is noted that there has been little research to compare volume-based and number-based soil particle size distributions(PSDs).Our objectives were to characterize the scaling properties and the possible connections between volume-based and number-based PSDs by applying single and joint multifractal analysis.Twelve soil samples were taken from selected sites in Northwest China and their PSDs were analyzed using laser diffractometry.The results indicated that the volume-based PSDs of all 12 samples and the number-based PSDs of 4 samples had multifractal scalings for moment order -6 < q < 6.Some empirical relationships were identified between the extreme probability values,maximum probability(P max),minimum probability(P min),and P max /P min,and the multifractal indices,the difference and the ratio of generalized dimensions at q = 0 and 1(D 0 - D 1 and D 1 /D 0),maximum and minimum singularity strength(α max and α min) and their difference(α max - α min,spectrum width),and asymmetric index(R D).An increase in P max generally resulted in corresponding increases of D 0 -D 1,α max,α max -α min,and R D,which indicated that a large P max increased the multifractality of a distribution.Joint multifractal analysis showed that there was significant correlation between the scaling indices of volume-based and number-based PSDs.The multifractality indices indicated that for a given soil,the volume-based PSD was more homogeneous than the number-based PSD,and more likely to display monofractal rather than multifractal scaling. | LI Yi LI Min R. HORTON | 2011 | Pedosphere2011,21,1: | 22 |
| 7 | 青藏高原东缘古近纪粗碎屑岩沉积学及其构造意义显示文摘青藏高原东缘古近纪盆地的填图和沉积学研究表明,在青藏高原东缘区域性走滑-挤压构造背景下形成的古近纪盆地内广泛发育厚层—巨厚层状的紫红色粗碎屑岩系。其沉积特征指示为一种近源快速堆积的泥石流和辫状河道沉积体,形成于干旱炎热气候条件下的典型陆内冲积扇环境。盆地充填序列、粗碎屑岩层序、动植物化石和盆地内岩浆岩^(40)Ar-^(39)Ar年代学等综合研究结果表明,古近纪盆地内粗碎屑岩大约形成于38~29 Ma。该时期与青藏高原东缘北段(横断山地区)古近纪盆地的形成和南段(兰坪—思茅地区)大盆地的裂解时间基本一致,这很可能预示着青藏高原在晚始新世—早渐新世期间曾发生过整体的快速构造隆升。 | 周江羽 王江海 An YIN BK HORTON MS SPURLIN | 2003 | 地质学报2003,77,2: | 21 |
| 8 | Impact of Gully on Soil Moisture of Shrubland in Wind-Water Erosion Crisscross Region of the Loess Plateau显示文摘The most serious erosion on the Loess Plateau of China exists in the wind-water erosion crisscross region where the annual precipitation is about 400 mm,the ecological environment is very fragile,and water is the key limiting factor for improving the environment. In this study,changes of soil moisture content for Caragana korshinskii Kom. shrubland in the gully bank of the Loess Plateau were studied using the methods of soil sampling and neutron probe. A typical gully(75 m long,28 m wide,and 10 m deep) was selected,and six neutron probe access tubes(6 m long) were installed at points 50,100,200,300,400,and 500 cm from the gully border for obtaining soil moisture data from July to October 2004 at approximately 10 d intervals. Soil samplings were simultaneously carried out for moisture determination at the six points. Results showed that the soil moisture of the shrubland in the gully bank significantly varied between 300 and 400 cm in the horizontal direction and up to 600 cm in vertical direction of the gully. Seasonal changes in soil moisture revealed a curve with a single peak that occurred at the end of August or early September. A linear regression equation was fit for soil water storage and the distance from the gully border,with coefficients depending on rainfall characteristics,sampling point,and time of measurement. | HUO Zhu SHAO Ming-An R. HORTON | 2008 | Pedosphere2008,18,5: | 19 |
| 9 | XRCC1 and DNA polymerase β in cellular protection against cytotoxic DNA single-strand breaks显示文摘 | Julie K Horton Mary Watson Donna F Stefanick Daniel T Shaughnessy Jack A Taylor Samuel H Wilson | 2008 | Cell Research2008,18,1: | 17 |
| 10 | Estimating van Genuchten Model Parameters of Undisturbed Soils Using an Integral Method显示文摘The van Genuchten model is the most widely used soil water retention curve (SWRC) model. Two undisturbed soils (clay and loam) were used to evaluate the accuracy of the integral method to estimate van Genuchten model parameters and to determine SWRCs of undisturbed soils. SWRCs calculated by the integral method were compared with those measured by a high speed centrifuge technique. The accuracy of the calculated results was evaluated graphically, as well as by root mean square error (RMSE), normalized root mean square error (NRMSE) and Willmott’s index of agreement (l). The results obtained from the integral method were quite similar to those by the centrifuge technique. The RMSEs (4.61 × 10-5 for Eum-Orthic Anthrosol and 2.74 × 10-4 for Los-Orthic Entisol) and NRMSEs (1.56 × 10-4 for Eum-Orthic Anthrosol and 1.45 × 10-3 for Los-Orthic Entisol) were relatively small. The l values were 0.973 and 0.943 for Eum-Orthic Anthrosol and Los-Orthic Entisol, respectively, indicating a good agreement between the integral method values and the centrifuge values. Therefore, the integral method could be used to estimate SWRCs of undisturbed clay and loam soils. | HAN Xiang-Wei SHAO Ming-An R. HORTON | 2010 | Pedosphere2010,20,1: | 14 |
| 11 | 青藏高原中东部古近纪盆地封闭的构造-沉积-岩浆活动和古气候响应显示文摘青藏高原中东部分布着一系列中小型古近纪盆地,详细的野外地质调查、盆地构造-沉积学和生物地层学、地球化学和岩浆岩的40Ar/39Ar年代学结果表明,盆内充填了紫红色的陆源碎屑岩夹火山碎屑岩、碳酸盐岩和石膏层,并被晚期岩浆岩所切割,盆缘地层发生大规模掀斜而形成高陡地层和挤压向斜,盆内地层发生褶皱变形。地层内部细碎屑岩孢粉和古植物、火山碎屑岩和侵入岩的40Ar/39Ar年代学揭示盆地充填沉积物形成于38~28Ma(晚始新世—早渐新世)。古近纪紫红色沉积物、碳酸盐岩和石膏层的出现代表干旱-炎热的古气候环境。印度-欧亚板块碰撞过程中因陆壳变形和高原早期构造隆升产生的走滑拉分和逆冲挤压是导致高原中东部古近纪盆地裂解和封闭的主要原因。 | 周江羽 王江海 B. K. HORTON An YIN M. S. SPURLIN | 2011 | 地质学报2011,85,2: | 12 |
| 12 | 这项临床试验完成注册了吗?——国际医学杂志编辑委员会声明显示文摘 | Catherine De Angelis Jeffrey M. Drazen Frank A. Frizelle Charlotte Haug John Hoey Richard Horton Sheldon Kotzin Christine Laine Ana Marusic A. John P.M. Overbeke Torben V.Schroeder Harold C. Sox Martin B. Van Der Weyden 刁骧(译) 孙丁(审校) 秦莉(审校) | 2006 | 中国循证医学杂志2006,6,4: | 11 |
| 13 | Towards reliable Arctic sea ice prediction using multivariate data assimilation显示文摘Rapid declines in Arctic sea ice have captured attention and pose significant challenges to a variety of stakeholders. There is a rising demand for Arctic sea ice prediction at daily to seasonal time scales, which is partly a sea ice initial condition problem. Thus, a multivariate data assimilation that integrates sea ice observations to generate realistic and skillful model initialization is needed to improve predictive skill of Arctic sea ice. Sea ice data assimilation is a relatively new research area. In this review paper, we focus on two challenges for implementing multivariate data assimilation systems for sea ice forecast. First, to address the challenge of limited spatiotemporal coverage and large uncertainties of observations, we discuss sea ice parameters derived from satellite remote sensing that(1) have been utilized for improved model initialization, including concentration, thickness and drift, and(2) are currently under development with the potential for enhancing the predictability of Arctic sea ice, including melt ponds and sea ice leads. Second, to strive to generate the ‘‘best' estimate of sea ice initial conditions by combining model simulations/forecasts and observations, we review capabilities and limitations of different data assimilation techniques that have been developed and used to assimilate observed sea ice parameters in dynamical models. | Jiping Liu Zhiqiang Chen Yongyun Hu Yuanyuan Zhang Yifan Ding Xiao Cheng Qinghua Yang Lars Nerger Gunnar Spreen Radley Horton Jun Inoue Chaoyuan Yang Ming Li Mirong Song | 2019 | Science Bulletin2019,64,1: | 10 |
| 14 | 柴达木盆地大红沟剖面新生代地层磁组构特征及构造意义显示文摘研究表明柴达木盆地新生代沉积物磁化率各向异性能够有效地记录印度-欧亚板块碰撞的应力场方向,然而过去对该盆地磁组构研究主要集中在始新世下干柴沟组和中新世下油砂山组,因此不能有效界定应力场方向发生变化的年代。本文对柴达木盆地北缘大红沟剖面沉积岩进行了详细的磁组构分析,获得了新生代较高分辨率(平均6~10m)的磁化率各向异性数据。结果表明,下干柴沟组、上干柴沟组、下油砂山组和上油砂山组及狮子沟组磁面理发育较为明显,磁化率椭球体呈压扁状,具有较强的压扁效应;而路乐河组磁线理发育更为明显,可能记录了较强的构造作用力。路乐河组和下干柴沟组磁组构指示构造应力的方向为近南北向;上干柴沟组和下油砂山组磁组构指示应力的方向为东北-西南向。因此,柴达木盆地由南北向挤压转变为东北-西南向挤压发生在始新世下干柴沟组和渐新世上干柴沟组之间,指示青藏高原北部应力场发生了变化。我们将青藏高原北部应力场的转变归因于阿尔金断裂的左旋走滑,而中晚中新世应力的进一步加强可能与下地壳流或昆仑山断裂开始走滑也有关系。这一研究加深了对青藏高原北部变形机制的理解。 | 苏庆达 聂军胜 Joel E. Saylor Brian K. Horton Meredith A. Bush 陈文汉 | 2016 | 第四纪研究2016,36,4: | 8 |
| 15 | Review of treatment assessment using DCE-MRI in breast cancer radiation therapy显示文摘As a noninvasive functional imaging technique, dynamic contrast-enhanced magnetic resonance imaging(DCEMRI) is being used in oncology to measure properties of tumor microvascular structure and permeability. Studies have shown that parameters derived from certain pharmacokinetic models can be used as imaging biomarkers for tumor treatment response. The use of DCE-MRI for quantitative and objective assessment of radiation therapy has been explored in a variety of methods and tumor types. However, due to the complexity in imaging technology and divergent outcomes from different pharmacokinetic approaches, the method of using DCE-MRI in treatment assessment has yet to be standardized, especially for breast cancer. This article reviews the basic principles of breast DCE-MRI and recent studies using DCE-MRI in treatment assessment. Technical and clinical considerations are emphasized with specific attention to assessment of radiation treatment response. | Chun-Hao Wang Fang-Fang Yin Janet Horton Zheng Chang | 2014 | World Journal of Methodology2014,4,2: | 8 |
| 16 | An Analytical Solution for One-Dimensional Water Infiltration and Redistribution in Unsaturated Soil显示文摘Soil infiltration and redistribution are important processes in field water cycle, and it is necessary to develop a simple model to describe the processes. In this study, an algebraic solution for one-dimensional water infiltration and redistribution without evaporation in unsaturated soil was developed based on Richards equation. The algebraic solution had three parameters, namely, the saturated water conductivity, the comprehensive shape coefflcient of the soil water content distribution, and the soil suction allocation coefficient. To analyze the physical features of these parameters, a relationship between the Green-Ampt model and the algebraic solution was established. The three parameters were estimated based on experimental observations, whereas the soil water content and the water infiltration duration were calculated using the algebraic solution. The calculated soil water content and infiltration duration were compared with the experimental observations, and the results indicated that the algebraic solution accurately described the unsaturated soil water flow processes. | WANG Quan-Jiu R. HORTON FAN Jun | 2009 | Pedosphere2009,19,1: | 7 |
| 17 | Successful endoscopic treatment of an intraductal papillary neoplasm of the bile duct显示文摘We present a case of a 76-year-old man with right upper quadrant abdominal pain and weight loss,who was found to have an intraductal papillary neoplasm of the bile duct(IPNB)of the pancreaticobiliary subtype,deemed curatively resectable.The patient declined surgery and opted for endoscopic therapy.He underwent two sessions of endoscopic retrograde cholangiopancreatography(ERCP)-guided radiofrequency ablation(RFA).Ten months later,no evidence of recurrence was identified on repeat ERCP.To our knowledge,this is the first reported case of successful use of RFA as a primary treatment modality for resectable IPNB. | Nikola S Natov Laura C Horton Sanjay R Hegde | 2017 | World Journal of Gastrointestinal Endoscopy2017,9,5: | 5 |
| 18 | 阿苯达唑治疗人体囊性棘球蚴病:12年的经验显示文摘本文回顾了12年来用阿苯达唑(ABZ)治疗棘球蚴病的有效性与安全性,肯定了ABZ作为棘球蚴病的治疗药物或作为手术及其它疗法的辅助手段的价值。 | Horton RJ 杨彬 | 1997 | 国外医学(寄生虫病分册)1997,24,6: | 5 |
| 19 | 信息素养和终身学习领域的图书馆员和其他信息专业人员的职业和专业发展机会与挑战显示文摘 | Forest Woody Horton 邱晓琳 | 2009 | 图书情报知识2009,26,1: | 5 |
| 20 | Impact of biochar amendments on the quality of a typical Midwestern agricultural soil显示文摘 | David A. Laird Pierce Fleming Dedrick D. Davis Robert Horton Baiqun Wang Douglas L. Karlen | 2010 | Geoderma2010,,3: | 5 |