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Differential response of radial growth and δ^(13)C in Qinghai spruce(Picea crassifolia) to climate change on the southern and northern slopes of the Qilian Mountains in Northwest China

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Journal of Forestry Research 2024年第3期35卷 205-218页

作者： Li Qin Huaming Shang Weiping Liu yuting fan Kexiang Liu Tongwen Zhang Ruibo Zhang Key Laboratory of Tree-Ring Physical and Chemical Research(CMA)/Xinjiang Key Laboratory of Tree-Ring Ecology Institute of Desert MeteorologyChina Meteorological AdministrationUrimqi 830002People's Republicof China Xinjiang Meteorological Information Center Urimqi 830002People's Republic of China

Tree radial growth can have significantly differ-ent responses to climate change depending on the *** elucidate the effects of climate on radial growth and stable carbon isotope(δ^(13)C)fractionation of Qing-hai spruce(Picea crassifolia),a widely distributed native conifer in northwestern China in different environments,we developed chronologies for tree-ring widths and δ^(13)C in trees on the southern and northern slopes of the Qilian Mountains,and analysed the relationship between these tree-ring variables and major climatic ***-ring widths were strongly influenced by climatic factors early in the growing season,and the radial growth in trees on the northern slopes was more sensitive to climate than in trees on the ***-ring δ^(13)C was more sensitive to climate than radial growth.δ^(13)C fractionation was mainly influenced by summer temperature and precipitation early in the growing *** conductance more strongly limited stable carbon isotope fractionation in tree rings than photosynthetic rate *** response between tree rings and climate in mountains gradually weakened as climate *** in radial growth and stable carbon isotope fractionation of *** in response to climate in the Qilian Mountains may be further complicated by continued climate change.

关键词： Tree rings Qinghai spruce(Picea crassifolia Kom.) Stable carbon isotope(δ^(13)C) Qilian Mountains:Climate change

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Engineering Thermoelectric Performance of α-GeTe by Ferroelectric Distortion

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Energy & Environmental Materials 2024年第2期7卷 171-179页

作者： yuting fan Chenghao Xie Jun Li Xiangyu Meng Jinchang Sun Jinsong Wu Xinfeng Tang Gangjian Tan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China International School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

The rhombohedralα-GeTe can be approximated as a slightly distorted rock-salt structure along its[111]direction and possesses superb thermoelectric ***,the role of such a ferroelectric-like structural distortion on its transport properties remains ***,we performed a systematic study on the crystal structure and electronic band structure evolutions of Ge_(1-x)Sn_(x)Te alloys where the degree of ferroelectric distortion is continuously *** is revealed that the band gap is maximized while multiple valence bands are converged at x=0.6,where the ferroelectric distortion is the least but still *** undistorted,the band gap is considerably reduced,and the valence bands are largely separated ***,near the ferro-to-paraelectric phase transition Curie temperature,the lattice thermal conductivity reaches its minima because of significant lattice softening enabled by ferroelectric *** predict a peak ZT value of 2.6 at 673 K inα-GeTe by use of proper dopants which are powerful in suppressing the excess hole concentrations but meanwhile exert little influence on the ferroelectric distortion.

关键词： electronic band structures ferroelectric distortion lattice softening thermoelectric α-GeTe

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上颌中切牙牙弓形态、牙槽骨厚度及矢状面位置的锥体束计算机断层扫描研究

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口腔医学研究 2024年第1期40卷 61-65页

作者：范玉亭扈宗鑫甘抗朱娟芳郑州大学第一附属医院口腔医学中心河南郑州450052

目的:利用锥体束计算机断层扫描(cone-beam computed tomography, CBCT)图像评估上颌前牙牙弓形态、中切牙牙根矢状位置(sagittal root position, SRP)与牙槽骨厚度的关系,并根据年龄、性别对其分组,临床医生在即刻种植体植入时应考虑... 详细信息

目的:利用锥体束计算机断层扫描(cone-beam computed tomography, CBCT)图像评估上颌前牙牙弓形态、中切牙牙根矢状位置(sagittal root position, SRP)与牙槽骨厚度的关系,并根据年龄、性别对其分组,临床医生在即刻种植体植入时应考虑这些因素。方法:对符合纳入标准的160例患者的CBCT影像进行分析,根据牙弓形态、年龄、性别对其分组,对患者的320张上颌中切牙矢状位CBCT图像进行了检查,以测量唇侧骨板和腭侧骨板厚度,进行统计学分析。结果:牙槽骨厚度因牙弓形态和SRP的不同而有显著差异。方圆形牙弓型和Ⅰ类SRP在腭侧的骨厚度最高。尖圆形弓型和Ⅱ类SRP在唇侧骨厚度最高。牙弓形态与SRP之间无显著相关性。年龄、性别、牙弓形态、SRP与牙槽骨的根尖水平厚度有显著相关性。结论:患者的年龄、性别、牙弓形态和SRP与上颌中切牙的牙槽骨厚度有不同程度的相关性。因此,临床医生在计划即刻种植体植入时应考虑这些因素。

关键词：上颌中切牙锥体束计算机断层扫描牙弓形态牙槽骨厚度种植牙

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A Detection-Switching-Assisted DCF Mechanism for Simulcast WLAN-over-Fiber Based Distributed Antenna Systems

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Chinese Journal of Electronics 2017年第4期26卷 837-841页

作者： fan yuting LI Jianqiang XU Kun DAI Yitang State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications

Distributed antenna systems(DASs) using Radio-over-fiber(Ro F) links is a promising candidate to provide flexible coverage and high data rates. For simulcast Wireless local-area network(WLAN) use in Ro F systems, the stations covered by different Remote antenna units(RAUs) contend for the wireless medium using Media access control(MAC) mechanism. Severe inter-RAU hidden nodes problem will happen due to the stations in different RAUs cannot detect each other very well. In order to alleviate this inter-RAU collision problem, a promising detection-switching-assisted Distributed coordination function(DCF) mechanism is presented using in the uplink. The control delay issues of the proposed mechanism are also discussed in this paper.

关键词： Radio-over-fiber(RoF) Distributed an tenna system IEEE 802.11.Detection-switch mechanism

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一种新型低压开关柜的系统设计

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铁道建筑技术 2024年第9期 77-79页

作者：王孝辉樊雨婷中铁十四局集团电气化工程有限公司山东济南250000

城市轨道交通装饰安装工程施工用电,传统开关柜的设计在这潮湿和多尘的施工环境中容易发生控制异常,导致设备损坏和安全隐患。为此,提出了一种新型低压开关柜系统,包含开关柜模块、开关控制模块、供电检测模块和异常控制模块。该系统能... 详细信息

城市轨道交通装饰安装工程施工用电,传统开关柜的设计在这潮湿和多尘的施工环境中容易发生控制异常,导致设备损坏和安全隐患。为此,提出了一种新型低压开关柜系统,包含开关柜模块、开关控制模块、供电检测模块和异常控制模块。该系统能够检测和判断开关柜模块的工作状态,并在控制异常时及时断开供电回路,从而避免异常供电。新系统设计具备良好的容错性,能有效提升施工安全性,减少设备损坏和人员受伤的风险,具有较高的应用和推广价值。

关键词：开关柜模块供电检测异常控制改进优化

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Hydrological and water cycle processes of inland river basins in the arid region of Northwest China

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Journal of Arid Land 2019年第2期11卷 161-179页

作者： CHEN Yaning LI Baofu fan yuting SUN Congjian fanG Gonghuan State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences School of Geography and Tourism Qufu Normal University Key Laboratory of Tree-Ring Physical and Chemical Research of China Meteorological Administration/Xinjiang Laboratory of Tree Ring Ecology Institute of Desert MeteorologyChina Meteorological Administration School of Geographical Science Shanxi Normal University

The increasing shortage in water resources is a key factor affecting sustainable socio-economic development in the arid region of Northwest China(ARNC). Water shortages also affect the stability of the region's oasis ecosystem. This paper summarizes the hydrological processes and water cycle of inland river basins in the ARNC, focusing on the following aspects: the spatial-temporal features of water resources(including air water vapor resources, runoff, and glacial meltwater) and their driving forces; the characteristics of streamflow composition in the inland river basins; the characteristics and main controlling factors of baseflow in the inland rivers; and anticipated future changes in hydrological processes and water resources. The results indicate that:(1) although the runoff in most inland rivers in the ARNC showed a significant increasing trend, both the glaciated area and glacial ice reserves have been reduced in the mountains;(2) snow melt and glacier melt are extremely important hydrological processes in the ARNC, especially in the Kunlun and Tianshan mountains;(3) baseflow in the inland rivers of the ARNC is the result of climate change and human activities, with the main driving factors being the reduction in forest area and the over-exploitation and utilization of groundwater in the river basins; and(4) the contradictions among water resources, ecology and economy will further increase in the future. The findings of this study might also help strengthen the ecological, economic and social sustainable development in the study region.

关键词： water resources climate change river runoff baseflow streamflow composition inland river basin arid region of Northwest China

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Impacts of temperature and precipitation on runoff in the Tarim River during the past 50 years

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Journal of Arid Land 2011年第3期3卷 220-230页

作者： yuting fan YaNing CHEN WeiHong LI HuaiJun WANG XinGong LI State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Department of Geography University of Kansas Lawrence KS 66045 USA

The relationship between climate change and water resources in the Tarim River was analyzed by combining the temperature,precipitation and streamflow data from 1957 to 2007 from the four headstreams of the Tarim River （Aksu,Hotan,Yarkant and Kaidu rivers） in the study *** long-term trend of the hydrological time series including temperature,precipitation and streamflow were studied using correlation analysis and partial correlations *** double exponential smoothing was used to fit the trends between streamflow and the two climatic factors of Aksu River,Hotan River and Yarkant *** streamflow of the main stream was forecasted by Autoregressive Integrated Moving Average Model （ARIMA） modeling by the method of time series *** results show that the temperature experienced a trend of monotonic *** precipitation and runoff of the four headstreams of the Tarim River increased,while the inflow to the headstreams increased and the inflow into the Tarim River *** of temperature and precipitation had a significant impact on runoff into the four headstreams of the Tarim River： the precipitation had a positive impact on water flow in the Aksu River,Hotan River and Kaidu River,while the temperature had a positive impact on water flow in the Yarkant *** results of Holt double exponential smoothing showed that the correlation between the independent variable and dependent variable was relatively close after the model was fitted to the headstreams,of which only the runoff and temperature values of Hotan River showed a significant negative *** forecasts by the ARIMA model for 50 years of annual runoff at the Allar station followed the pattern of the measured data for the same *** short-term forecasts beyond the observed series adequately captured the pattern in the data and showed a decreasing tendency in the Tarim River flow of 3.07% every ten *** results showed that global warming accelerated the water

关键词： Tarim River Basin climate change hydrological change water resources streamflow

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医院基本药物网格化管理模式构建与效果评价

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中国药业 2024年第15期33卷 12-17页

作者：范玉婷冯滔周后凤郭远新四川省成都市第五人民医院四川成都611130

目的评价医院基本药物网格化管理模式的应用效果。方法构建医院-药剂科-临床科室三级联动体系的网格化管理模式,对医院基本药物开展管理。通过医院信息系统提取2019年1月至2023年12月的基本药物数据,统计基本药物网格化管理模式构建前... 详细信息

目的评价医院基本药物网格化管理模式的应用效果。方法构建医院-药剂科-临床科室三级联动体系的网格化管理模式,对医院基本药物开展管理。通过医院信息系统提取2019年1月至2023年12月的基本药物数据,统计基本药物网格化管理模式构建前(2019年)和构建后(2020年至2023年)的门诊患者基本药物处方占比、住院患者基本药物使用率、基本药物医院配备使用金额及占比、基本药物采购品种数及占比、出院患者基本药物总费用及次均费用、门诊和急诊患者基本药物次均费用,评价干预效果。结果 2019年至2023年,门诊患者基本药物处方占比、住院患者基本药物使用率、基本药物医院配备使用金额及占比、基本药物采购品种数及占比、出院患者基本药物总费用及次均费用分别为31.64%,63.26%,67.10%,68.89%,69.25%;96.65%,98.82%,96.79%,96.81%,97.59%;1.24亿元、1.32亿元、1.47亿元、1.56亿元、1.62亿元;31.61%,35.75%,35.76%,35.07%,35.97%;364种、429种、456种、461种、453种;33.89%,36.20%,38.06%,38.24%,38.59%;6 742.13万元、7 137.08万元、8 341.59万元、8 418.86万元、8 330.65万元;790.00元、876.67元、927.08元、881.00元、772.46元。构建后,以上指标均提升,且门诊和急诊患者基本药物次均费用逐年增加(H=37.443,P=0.000)。结论与常规基本药物管理模式相比,基本药物网格化管理模式能促进医院基本药物的规范化管理和使用,减少医保开支。

关键词：网格化管理基本药物医院药学药事管理

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医院药学绩效考核模式探索与实践

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中国药业 2024年第12期33卷 11-16页

作者：周后凤范玉婷王雪莹冯滔四川省成都市第五人民医院四川成都611130

目的促进医院药学工作提质增效。方法探索医院药学绩效考核模式,经人才队伍建设、制度分层保障、药师配备网格化、以目标为导向的项目式管理,建立院内药事绩效考核体系及药剂科绩效考核体系,以信息化系统对药学工作进行监管,并于2022年... 详细信息

目的促进医院药学工作提质增效。方法探索医院药学绩效考核模式,经人才队伍建设、制度分层保障、药师配备网格化、以目标为导向的项目式管理,建立院内药事绩效考核体系及药剂科绩效考核体系,以信息化系统对药学工作进行监管,并于2022年1月对体系进行修订。比较医院2021年(修订前)及2022年(修订后)超常处方、合理用药指标、临床科室对临床药师药学服务满意度的相关数据,以评价院内药事绩效考核体系的应用效果;比较2021年7月至12月(381315例)及2022年7月至12月(387105例)门诊患者的取药等候时间,2021年及2022年门诊药房与住院药房的处方调配差错情况,以评价药剂科绩效考核体系的应用效果。结果院内药事绩效考核体系应用后,超常处方数、抗菌药物超常处方数、麻醉药品和精神药品超常处方数占不合理处方数的比例分别由5.83%,3.33%,0.83%降至0.55%,0.55%,0;点评处方占比、抗菌药物使用强度、住院患者基本药物使用率等合理用药指标均改善;30个临床科室(599名医护人员)对临床药师各项药学服务的总满意度均提升。药剂科绩效考核体系应用后,门诊患者的取药等候时间由(10.27±0.49)min缩短为(9.29±0.60)min(P<0.05);门诊药房、住院药房的处方调配差错率分别由0.32‱和0.04‱降至0.08‱和0.02‱,存在药品质量问题、数量错误、一品多规、厂家错误的门诊药房处方及存在数量错误、一品多规、厂家错误、剂型错误的住院药房处方调配差错占比均降低。结论该医院药学绩效考核模式科学可行,有助于提升药师的工作效率与工作质量,促进临床合理用药。

关键词：绩效考核医院药学药学服务合理用药

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多域抗干扰技术

先进小卫星技术（中英文）

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先进小卫星技术（中英文） 2024年第2期1卷 79-86页

作者：曾定坤范玉婷董春雨杜宏峰上海航天电子有限公司上海201821

针对空间环境中强干扰情况下现有通信体制抗干扰能力较低的问题,提出了一种多域抗干扰技术.该技术以5G非正交多址(nonGorthogonalmultipleaccess,NOMA)技术为基础,引入稀疏矩阵概念,将以往集中在某一个域中的稀疏设计扩展到多个域中,在... 详细信息

针对空间环境中强干扰情况下现有通信体制抗干扰能力较低的问题,提出了一种多域抗干扰技术.该技术以5G非正交多址(nonGorthogonalmultipleaccess,NOMA)技术为基础,引入稀疏矩阵概念,将以往集中在某一个域中的稀疏设计扩展到多个域中,在用户域、编码交织域、码域、频域及空域共同实现稀疏化,从而降低信号碰撞概率.对于单域而言,引入图样随机参数设计,使信号波形设计随机化,从而使信号近似白噪声化,降低信号相关性,最终实现提高信号的抗干扰能力.仿真结果表明:所提技术在强干扰情况下,能有效保证信号安全可靠通信,空域同向时宽带/窄带抗干扰能力达37dB/38dB,空域非同向时宽带/窄带抗干扰能力达96dB/95dB.

关键词：抗干扰稀疏矩阵非正交多址多域白噪声化

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