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大学专业课程实施项目化学习的整体考量

教育教学论坛 2024年第8期 165-168页

作者：代双璠王泳微肖广德河北大学教育学院河北保定071002

在大学专业课程中实施项目化学习,兼顾培养学生的理论知识与实践能力,是提高大学教育教学质量的有效途径。大学专业课程项目化学习的整体规划包括按主题重组课程内容,重新规划课程目标,以及从课程整体出发设计恰当的项目类型;在实施上,... 详细信息

在大学专业课程中实施项目化学习,兼顾培养学生的理论知识与实践能力,是提高大学教育教学质量的有效途径。大学专业课程项目化学习的整体规划包括按主题重组课程内容,重新规划课程目标,以及从课程整体出发设计恰当的项目类型;在实施上,须要整体考虑对学生学习过程的指导策略、使每名学生都能获得充分发展的学习主体组织策略,以及利用数字环境为学生提供恰当支持的策略。

关键词：大学专业课程项目化学习

基于因子分析挖掘高血压合并超重/肥胖患者的证候要素与靶标特征

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中国循证心血管医学杂志 2024年第5期16卷 543-546,555页

作者：代爽严祖桢丁宇坤王显北京中医药大学东直门医院北京100700 王四营卫生服务中心北京100124

目的探究高血压合并超重或肥胖患者的主要证候要素及靶标特征分布情况,以期对中医临床辨证论治提供理论基础以及为北京地区基层医院中医治疗高血压伴超重/肥胖患者提供帮助。方法收集1102例高血压合并超重或肥胖患者的相关临床资料(包... 详细信息

目的探究高血压合并超重或肥胖患者的主要证候要素及靶标特征分布情况,以期对中医临床辨证论治提供理论基础以及为北京地区基层医院中医治疗高血压伴超重/肥胖患者提供帮助。方法收集1102例高血压合并超重或肥胖患者的相关临床资料(包括71个症状、体征条目)建立Excel数据库,并导入SPSS统计软件进行降维因子分析,提取证候要素及靶标,并统计分布特点。结果共提取得到15个公因子,归纳出7个证候要素:阴虚210例(25.15%)、气虚146例(17.49%)、阳亢136例(16.29%)、痰热98例(11.74%)、血瘀87例(10.42%)、痰浊82例(9.82%)、阳虚76例(9.10%),靶标包括脾、肝、心等多个脏腑,以脾为主,占35.58%。结论高血压合并超重或肥胖患者主要证候要素为阴虚、气虚、阳亢、痰热、血瘀、痰浊、阳虚,病性为虚实夹杂,病位以脾、肝、心为常见。提示其治疗宜以滋阴、益气、潜阳、化痰、清热、活血、温阳为主,主张从脾论治,兼顾肝、心两脏。

关键词：高血压超重肥胖

Accuracy of renal blood flow assessment by transesophageal echocardiography during carbon dioxide pneumoperitoneum

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中华麻醉学杂志 2010年第B2期30卷 54-57页

作者： dai shuang-bo YANG Ping-liang LIU Bin Department of Anesthesiology Cardiovascular Disease Research Institute Fujian Provincial Hospital Fuzhou 350001 China Department of Anesthesiology Second Affiliated Hospital West China Medical College Sichuna University Chengdu 610041 China Department of Anesthesiology West China Hospital West China Medical College Sichuan University Chengdu 610041 China

Objective To determine the accuracy of renal blood flow assessment by transesophageal echocardiography (TEE) during carbon dioxide (CO2) *** The left renal arterial diameter (RAD) and the Doppler velocity time integral (VTI) were measured by TEE before peumoperitoneum (T0, baseline), at 1, 5, 10, 15, 20 and 30 min of pneumoperitoneum and 1 and 5 min after deflation in 35 patients undergoing elective laparoscopic cholecystectomy. The left renal blood flow (LRBF) and the left renal blood perfusion resistance (LRPR) were calculated according to the following formulae: LRBF = 1/4π x RAD2 x VTI x HR, LRPR = MAP/*** months later, the TEE images of 10 cases were randomly selected and reviewed by the same and another research team member to check the repeatability and consistency of the LRBF determination during operation, respectively. The quality of the TEE images was evaluated by another *** Before pneumoperitoneum, 94% of the TEE images were rated as satisfactory. There was no significant difference between the qualities of the TEE images obtained before and during pneumoperitoneum. The variabilities between the RADs measured by TEE during and 3 months after operation were 9.28% by the same team member and 8.71% by another team member. The variabilities between the VTIs measured by TEE during and 3 months after operation were 5.61% by the same team member and 6.25% by another team member. The linear regression analysis of the LRBF showed that the slope and the intercept were 1.05 and 31.4 ml/min respectively by the same member and 0.92 and 47.3 ml/min respectively by another member. The LRBF was decreased during pneumoperitoneum and the LRPR was *** TEE can be used to accurately monitor the changes in renal blood flow during CO2 pneumoperitoneum.

关键词：二氧化碳气超声心动图肾动脉血流量评估食管图像质量线性回归分析

Late Eocene pollen records and palaeoenvironmental changes in northern Tibetan Plateau

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Science China Earth Sciences 2008年第8期51卷 1089-1098页

作者： MIAO YunFa FANG XiaoMin SONG ZhiChen WU FuLi HAN WenXia dai shuang SONG ChunHui Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100085China National Laboratory of Western China Environmental Systerms of Education of China&Department of Geography Lanzhou UniversityLanzhou 730000China Nanjing Institute of Geology and Palaeontology Chinese Academy of SciencesNanjing 210008China

The Eocene palaeovegetation landscape and palaeoclimate reconstructed from the pollen records in the Jiuquan Basin, northwest China provide some important information on the early uplift of the Tibetan Plateau and the origin and evolution of the aridification in northwest China. The records show the arid-semiarid scrubs with open forest palynofloras controlled by the subtropical high existed in northwest China during the 40.2-33.4 Ma. Four pollen assemblages are found: Nitrariadites-Cheno-podipollis-Pinaceae assemblage (40.2-37.9 Ma) is followed by Chenopodipollis-Nitrariadites assemblage (37.9-34.6 Ma), Pinuspollenites & Abietineaepollenites-Chenopodipollis assemblage (34.6-33.9 Ma), and Chenopodipollis-Nitrariadites assemblage (33.9-33.4 Ma). The percentage of thermophilic types is in anti-correlation with that of the dry types, which means the palaeoclimate is relatively warmwet or cold-dry during most of that time. Such aridity may be related to the water vapor reduction and the planetary wind system movement northward in response to the cooling caused by small-ephemeral icesheets.

关键词： Tibetan Plateau pollen records Eocene planetary arid zone palaeoenvironment cooling

Tectonic and Environmental Evolutions of the Northern Tibetan Plateau Prior to the Collision of India with Asia

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Acta Geologica Sinica(English Edition) 2014年第2期88卷 425-443页

作者： dai shuang ZHANG Mingzhen PENG Dongxiang WANG Huawei WU Maoxian CHEN Ruiling ZHANG Xiang Research School of Arid Environment and Climate Change & Key Laboratory of Western China's Environmental Systems (MOE) Lanzhou University Northwest Institute of Nuclear Technology

Tectonic and environmental patterns and evolution of the present North Tibetan Plateau （NTP） prior to the India collision with Asia is significant to understand the formation of the Tibetan Plateau and its influence on the *** this study,we integrated and analyzed the tectonostratigraphy and the special sedimentary layers whose climatic implications are clear in the ***,we stressed the tectonic and environmental events and their evolutions from the Mesozoic to the Early *** results show that four tectonic phases,which sequentially took place during the Triassic,Jurassic,Cretaceous and Paleogene,played an important role on the formation of the North *** climate was basically dry and hot from the Triassic to the Eocene and became dry and cool since the Oligocene in this *** climatic evolution was characterized by a transition from a wet and hot phase during the Triassic-Middle Jurassic,to a dry and hot phase during the Late *** phases encompassed 5 wet and hot periods followed by 5 dry and hot climate events,*** addition,we found that the tectonic deformation and the climatic conditions were spatially and temporally *** detail,in the regions north of the PaleoTian Shan and Paleo-Qilian *** tectonic deformation and climatic condition were stronger and wetter than in regions south of the Paleo-Tian Shan and Paleo-Qilian *** the Late *** in the Cretaceous,the tectonic movement was intensive in the west but steady in the east,and climate was dry in the south but wet in the north of *** formation of the tectonic and climatic patterns in NTP were the consequence of either global climate change or regional tectonics,including the Paleo-Asian Ocean closure and the Qiangtang block,Lhasa block and India plate collision subsequently to ***,the regional tectonic events occurred before any global climate change and drove the climatic change in the N

关键词： tectonic-climate background North Tibet Mesozoic Early Cenozoic

Early tectonic uplift of the northern Tibetan Plateau

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Chinese Science Bulletin 2005年第15期50卷 1642-1652页

作者： dai shuang FANG Xiaomin SONG Chunhui GAO Junping GAO Donglin LI Jijun Key Laboratory of Western China's Environmental Systems Ministry of Education of China and College of Resources and EnvironmentLanzhou University Lanzhou 730000 China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100085 China Qinghai Institute of Salt lakes Chinese Academy of Sciences Xining810008 China

The Hexi Corridor is the northmost foreland basin of the Tibetan Plateau and its formation is controlled by the northern marginal fault of Tibet, Altyn Tagh Fault (ATF)-North Qilian Shan marginal Fault (NQF), and the southern Kuantan Shan-Longshou Shan Fault (KLF). So its study is important to understanding the mechanism of Tibet formation and its influence on global climate change. The oldest Cenozoic sediments in the Corridor is the Huoshaogou Formation which consists of terrigenous fine conglomerate, sandstone, sandy mudstone and mudstone, depositing in alluvial to lacustrine and fan delta sedimentary environments. Detailed paleomagnetic measurements of this sequence at Yumen clearly reveal eleven pairs of normal and reversed polarities. Fossil mammals found around the section support that most of the observed polarities can be well correlated with chrons between 13n and 18r of the standard geomagnetic polarity time scale, yielding ages of 40.2-33.35 Ma. The mean declinations of this sequence and its immediately above stratigraphy indicate an 18.3° rapid clockwise rotation of the Hexi Corridor. Since this sequence has been strongly folded and is capped by an angular unconformity, we think that the presence of the thick alluvial fan conglomeration at the bottom of the foreland basin may indicate the initial deformation and uplift of the northern Qilian Shan. This process could occur at latest at 40.2 Ma, driven by the faults NQF and KLF that thrust onto the Hexi corridor respectively from its southern and northern margins. These faults are in an early response to the collision of India with Asia, while the unconformable termination and rotation of the Huoshaogou Formation at ～33.35 Ma indicate other early episode of rapid tectonic deformation and uplift of the northern Tibet.

关键词：中国地理青藏高原河西走廊气候特征

Magnetic properties of surface soils across the southern Tarim Basin and their relationship with climate and source materials

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Chinese Science Bulletin 2011年第3期56卷 290-296页

作者： ZAN JinBo FANG XiaoMin NIE JunSheng YANG ShengLi SONG ChunHui dai shuang Center for Basin Resource and Environment Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100085 China Key Laboratory of Western China's Environmental Systems Ministry of Education of China Lanzhou 730000 China College of Geography Science Nanjing Normal University Nanjing 210046 China

The magnetic susceptibility (χ) of surface soils on the Chinese Loess Plateau (CLP) has strong positive correlation with mean annual *** is widely accepted that ultrafine magnetite/maghemite grains produced during pedogenesis are responsible for the enhancement of χ,and loess χ on the CLP has been widely used as a proxy for the intensity of the East Asian summer ***,few works have investigated mechanisms for the enhancement of χ in the case of surface aeolian sediments in westerly-dominated inland China,north of the Tibetan *** detailed rock magnetism and grain size studies of 49 surface samples taken across the southern Tarim Basin for different rainfall/temperature/altitude conditions are *** results show that samples taken from desert have the lowest χ values and that χ of loessic sand and loess samples decreases with increasing *** addition,the rock magnetism studies suggest that the magnetic properties of surface soils across the southern Tarim Basin are mainly controlled by the concentration of coarse aeolian ferrimagnetic *** contribution of ultrafine pedogenically produced magnetic grains to χ is very limited.

关键词：塔里木盆地表层土壤磁学性质中国黄土高原材料气候青藏高原北部岩石磁学

Relative effects of phylogeny,biological characters and environments on leaf traits in shrub biomes across central Inner Mongolia,China

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Journal of Plant Ecology 2013年第3期6卷 220-231页

作者： Chao Liu Xiangping Wang Xian Wu shuang dai Jin-Sheng He Weilun Yin The Key Laboratory of Silviculture and Conservation of the Ministry of Education and the National Engineering Laboratory for Forest Genetics and Tree BreedingBeijing Forestry UniversityBeijing 100083China Department of Ecology College of Environmental Sciencesand Key Laboratory for Earth Surface Processes of the Ministry of EducationPeking UniversityBeijing 100871China

Aims Understanding the drivers for leaf traits is critical to improving our predictions on ecosystems'responses to global *** patterns of leaf traits are shaped by phylogenetic,biological and environmental factors ***,till now few studies have examined how these factors influenced leaf traits together,and how their effects differed at the within-and among-site *** We sampled leaf traits from a 1100 km shrub-biome transect across central Inner-Mongolia,including leaf mass per area(LMA),mass-based photosynthetic rate,nitrogen(N)and phosphorus(P)*** examined the effects of phylogenetic,biological(height and growth rate)and environmental(climate and soil)fac-tors on leaf traits with mixed-model analyses of *** partitioning method was used to separate the joint and independent effects of these three types of *** Findings(i)Climate and soil fertility(total or available nutrient concentra-tions)together explained 11.4-41.4%of among-site variations,with remarkable difference among traits.(i)Height and height growth rate together explained 0.4--31.9%of trait variations(mostly among-site variations).Our results could only weakly support the ability of leaf traits as predictors for whole-plant growth.(ii)LMA was negatively related to height,which was consistent with the resource-use strategy hypothesis but incon-sistent with the hypotheses proposed for coexisting trees,suggest-ing that the LMA--height relationship is shaped by rather different mechanisms between the within-and among-communities lev-els.(iv)The variation partitioning analysis showed that,the rela-tionships between leaf traits and biological characters largely reflected the differences in both leaf traits and biological char-acters among species that occupying different *** relative importance of phylogenetic,biological and environmental fac-tors differed remarkably among leaf traits,between the within-and among-communi

关键词： leaf trait phylogeny height growth rate soil fertility climate

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2022年6月通辽市强冰雹灾害天气分析

气象水文海洋仪器 2024年第4期41卷 41-44页

作者：王一冰刘梦迪贾宁陶晨戴爽通辽市气象局内蒙古028000

为了提高通辽大范围强冰雹天气的短时监测能力和预报预警准确率,文章利用常规观测资料、地面加密资料、FY-4卫星云图、多普勒天气雷达资料等,对2022-06-20通辽市强冰雹灾害天气过程进行了环流背景、层结条件和雷达回波特征的分析。结果... 详细信息

为了提高通辽大范围强冰雹天气的短时监测能力和预报预警准确率,文章利用常规观测资料、地面加密资料、FY-4卫星云图、多普勒天气雷达资料等,对2022-06-20通辽市强冰雹灾害天气过程进行了环流背景、层结条件和雷达回波特征的分析。结果表明:上层干冷、下层暖湿的不稳定层结,较大的对流有效位能、较小的抑制对流有效位能、适宜的融化层高度及强垂直风切变均是通辽强冰雹发生的有利条件;回波垂直结构具有较高的回波质心、三体散射、低层入流、弱回波区与回波垂悬结构特征,并呈现低层辐合、高层辐散的结构,有较强的上升气流;冰雹回波发展时的垂直累积液态含水量及最大基本反射率均维持在较高值可作为冰雹天气发生的判断依据。研究结果为通辽地区冰雹天气的监测预警技术提供了分析依据。

关键词：冰雹辐合线三体散射 VIL值