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Congestion Management Strategies of Real-Time Market

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Journal of Power and Energy Engineering 2014年第4期2卷 227-232页

作者： Qi Wang chunyu zhang Yi Ding Center for Electric Power and Energy Technical University of Denmark Copenhagen Denmark

The high penetration of distributed energy resources (DERs) will significantly challenge the power system operation and control due to their stochastic, intermittent, and fluctuation characteristics. This enhances the difficulty of congestion management of power systems in cross-border electricity market among different regions. For handling this, the Real-Time Market is proposed for balancing capacity trading against congestions. Several strategies for Real-Time Market dealing with congestions are proposed. The strategy of two-stage crossborder markets in Day-ahead, Intra-day and Real Time Market are introduced with the congestion constraints complied. Pre-Contingency strategy is proposed as the advance preparation for the future congestion, and In-Day redispatch is used for regulation. Accordingly, the requirements on facilities considering telemetry and remote control in a fast manner are discussed at last.

关键词： Congestion Management Electricity Market Real-Time Market Distributed Energy Resources(DERs)

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老年脆性骨折患者五年随访研究

国际老年医学杂志 2024年第3期45卷 268-273页

作者：王冰李芳菲刘九华鱼潇雅李光灿张春玉大连医科大学附属第二医院大连116027 山西医科大学附属第六医院太原030000

目的观察老年脆性骨折患者五年内再骨折率、死亡率,探讨相关影响因素。方法选取2015年1月―2016年12月于大连医科大学附属第二医院骨科住院的775例老年脆性骨折患者进行回顾性分析。采用电话咨询方式结合医院电子病历系统收集患者五年... 详细信息

目的观察老年脆性骨折患者五年内再骨折率、死亡率,探讨相关影响因素。方法选取2015年1月―2016年12月于大连医科大学附属第二医院骨科住院的775例老年脆性骨折患者进行回顾性分析。采用电话咨询方式结合医院电子病历系统收集患者五年内再骨折及死亡的情况,采用Cox风险比例模型分析再骨折及死亡的影响。结果五年内有效随访患者634例,五年内总体再骨折率为16.25%(103例),死亡率为32.97%(209例)。Cox多因素回归分析显示:年龄、首次椎体骨折是再骨折发生的独立危险因素(P<0.05),应用抗骨质疏松药物、服用钙剂和(或)维生素D、血肌酐水平是再骨折发生的保护因素(P<0.05);年龄、男性、空腹血糖是死亡的独立危险因素(P<0.05),体质量指数、白蛋白、首次骨折部位为四肢骨折、服用抗骨质疏松药物、服用钙剂和(或)维生素D是死亡的保护因素(P<0.05)。结论老年脆性骨折患者五年内再骨折率、死亡率较高。年龄、首次骨折部位、应用抗骨质疏松药物、服用钙剂和(或)维生素D对再骨折及死亡有影响。

关键词：老年脆性骨折再骨折率死亡率

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Smoking and Alzheimer's disease among Mongolian and Han Chinese aged 55 years and over living in the Inner Mongolia farming area of China

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Neural Regeneration Research 2012年第20期7卷 1570-1577页

作者： chunyu zhang Lin Da Shigang Zhao Desheng Wang Guangming Niu Huriletemuer Department of Neurology First Affifiated Hospital of Inner Mongolia Medical CollegeHohhot 010050Inner Mongolia Autonomous RegionChina School of Mathematical Sciences Inner Mongolian UniversityHohhot 010021Inner Mongolia Autonomous RegionChina Department of Neurology First Affiliated HospitalHarbin Medical UniversityHarbin 150001Heilongjiang ProvinceChina

Residents aged 55 years or older from 27 communities and two settlements in Xilingol League of Inner Mongolia were selected for participation in an Alzheimer＇s disease epidemiological investigation from June 2008 to June 2009, including 3 259 Mongolians and 5 887 Han Chinese. The Mongolian subjects in the Alzheimer＇s disease group were at age of 55 years or older （on average）, and more of them were male, illiterate and/or had a history of coronary artery disease and/or diabetes compared with the Mongolian subjects in the non-Alzheimer＇s disease group. The Han Chinese subjects in the AIzheimer＇s disease group were at age of 55 years or older （on average） and more of them were women, illiterate and/or had a history of coronary artery disease, and less of them had a history of alcohol consumption compared with the non-Alzheimefs disease group. Non-conditional multivariate stepwise logistic regression identified that male gender, increasing age and having a history of diabetes and/or coronary heart disease were associated with higher odds of Alzheimer＇s disease among Mongolians while having an educational background was associated with lower odds （OR = 0.259, 95%C/0.174-0.386）. Among the Han Chinese subjects, male gender, increasing age and having a history of coronary heart disease and/or hypertension was associated with higher odds of Alzheimer＇s disease, while having an educational background was associated lower odds （OR = 0.271, 95%C/0.192-0.381）. The results also indicated that extremely heavy smoking may be a risk factor for Alzheimer＇s disease in Mongolian males aged over 55 years. There was no significant difference in smoking habits between the Mongolian and Han Chinese subjects with Alzheimer＇s disease.

关键词： Alzheimers disease Mongolian Han Chinese population elderly epidemiology risk factor protection factor

文山州基本公共卫生服务麻风防治项目实施前后麻风流行情况分析

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中国麻风皮肤病杂志 2024年第10期40卷 712-716页

作者：尹丽娇张春雨余秀峰沈连发周丽娟赵付帅文山壮族苗族自治州皮肤病防治所文山州皮肤病专科医院云南文山663099

目的:评价文山州基本公共卫生服务麻风防治项目实施成效。方法:采用χ2检验统计学方法对文山州将麻风防治纳入文山州基本公共卫生服务的前12年(2000-2011年)与后12年(2012-2023年)麻风患者的流行病学特征进行分析总结。结果:2012-2023年... 详细信息

目的:评价文山州基本公共卫生服务麻风防治项目实施成效。方法:采用χ2检验统计学方法对文山州将麻风防治纳入文山州基本公共卫生服务的前12年(2000-2011年)与后12年(2012-2023年)麻风患者的流行病学特征进行分析总结。结果:2012-2023年与2000-2011年相比,麻风患者的平均发现率、平均患病率、2级畸残比均显著下降,差异均有统计学意义(均P<0.05),新发麻风病例中多菌型患者占比增高,差异有统计学意义(P<0.05)。结论:文山州将麻风防治纳入文山州基本公共卫生服务,促进了麻风患者的早期发现,降低了2级畸残比。

关键词：麻风基本公共卫生服务成效

Recent progress in functional metal-organic frameworks for bio-medical application

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Regenerative Biomaterials 2024年第2期3卷 37-54页

作者： Wenwen Chai Xiaochen Chen Jing Liu Liyan zhang chunyu Liu Li Li John Robert Honiball Haobo Pan Xu Cui Deping Wang School of Materials Science and Engineering Tongji UniversityShanghai 201804China Shenzhen Institute of Advanced Technology Chinese Academy of SciencesShenzhen 518055China Department of Orthopaedics&Traumatology School of Clinical MedicineLi Ka Shing Faculty of MedicineThe University of Hong KongHong KongChina

Metal-organic frameworks(MOFs)have a high specific surface area,adjustable pores and can be used to obtain functional porous materials with diverse and well-ordered structures through coordination and self-assembly,which has intrigued wide interest in a broad range of *** the arena of biomedical engineering,the functionalized modification of MOFs has produced drug carriers with excellent dispersion and functionalities such as target delivery and response release,with promising applications in bio-detection,disease therapy,tissue healing,and other *** review summa-rizes the present state of research on the functionalization of MOFs by physical binding or chemical cross-linking of small *** *** hvdrogels and evaluates the role and approach of MOFs functionalization in boosting the reactivity of *** this basis,research on the application of functionalized MOFs composites in biomedical engineering fields such as drug delivery,tissue repair,disease treatment,bio-detection and imaging is surveyed,and the development trend and application prospects of functionalized MOFs as an important new class of biomedical materials in the biomedical field are anticipated,which may provide some inspiration and reference for further development of MOF for bio-medical applications.

关键词： metal-organic frameworks porous functionalization tissue repair disease treatment

Four-Level Decay Model of^6P_(7/2) Excited State of Eu^(2+) Ion in KMgF_3

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Chinese Chemical Letters 2001年第2期12卷 175-178页

作者： Hai Quan SU, Xian Ming zhang, chunyu ZANG, Chun Shan SHI( Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 Key Lab. Rare Earth Chem. and Phys. Changchun Inst. of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China

A four-level decay model of ~6P_(7/2) excited state of Eu^(2+_ ion in KMgF_3: Eu^(2+) has been proposed. The decay profiles of the ~6P_(7/2) excited state of Eu^(2+) are two exponential and the physical implication of each term in the fit equation responsible for the model is interpreted. The data obtained spectroscopically are in good agreement with the fit results.

关键词： Four-level decay model divalent europium ~6P_(7/2) excited state KMgF_3.

Efficacy of dynamic contrast enhanced-MRI in distinguishing benign and malignant breast lesions

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The Chinese-German Journal of Clinical Oncology 2009年第10期8卷 561-566页

作者： Tieqiao Du Baozhi Ding chunyu Sang Chao zhang Department of Radiology Fuxing Hospital Affiliated to Capital University of Medical Sciences Beijing 100038 China

Objective: The aim of the study was to discuss the diagnostic value of dynamic contrast enhanced-magnetic resonance imaging (DCE-MRI) in distinguishing malignant tumors of breast from benign lesions. Methods: A DCE-MRI study was performed on 18 benign lesions, 16 malignant tumors and 2 borderline lesions of breast (mean age 51.7 years). The seven items including shape, marginal feature, spreading signs, time-signal intensity curve, maximum slope of increase (MSI), signal enhancement ratio (SER) and signal enhanced extent (SEE) were compared between patients with benign lesions and those with malignant tumors. Results: Shape, marginal feature, spreading signs, time-signal intensity curve, SEE and SER between the benign and malignant groups of breast represented significantly difference except MSI. The 36 cases with breast lesion displayed sensitivity, specificity, accuracy for diagnosing malignant tumor of breast using the scoring method was 93.8%, 83.3% and 88.2%, respectively. Conclusion: DCE-MRI combined with morphology and dynamic enhanced feature of breast lesion has well efficacy to differentiate malignant tumor from benign lesions.

关键词： breast tumor magnetic resonance imaging (MRI)

ess Enhanced photothermoelectric conversion in selfrolled tellurium photodetector with geometryinduced energy localization

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Light(Science & Applications) 2024年第8期13卷 1545-1556页

作者： Jiayuan Huang chunyu You Binmin Wu Yunqi Wang Ziyu zhang Xinyu zhang Chang Liu Ningge Huang Zhi Zheng Tingqi Wu Suwit Kiravittaya Yongfeng Mei Gaoshan Huang Department of Materials Science&State Key Laboratory of Molecular Engineering of Polymers Fudan UniversityShanghai 200438China Yiwu Research Institute of Fudan University Yiwu 322000 ZhejiangChina International Institute of Intelligent Nanorobots and Nanosystems Fudan UniversityShanghai 200438China ShanghaiTech Quantum Device Lab ShanghaiTech UniversityShanghai 200120China Department of Electrical Engineering Faculty of EngineeringChulalongkorn UniversityBangkokThailand Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Institute of OptoelectronicsFudan UniversityShanghai 200438China

Photodetection has attracted significant attention for information *** the implementation relies primarily on the photonic detectors,they are predominantly constrained by the intrinsic bandgap of active *** the other hand,photothermoelectric(PTE)detectors have garnered substantial research interest for their promising capabilities in broadband detection,owing to the self-driven photovoltages induced by the temperature *** get higher performances,it is crucial to localize light and heat energies for efficient ***,there is limited research on the energy conversion in PTE detectors at micro/nano *** this study,we have achieved a twoorder-of-magnitude enhancement in photovoltage responsivity in the self-rolled tubular tellurium(Te)photodetector with PTE *** illumination,the tubular device demonstrates a maximum photovoltage responsivity of 252.13 VW^(-1)and a large detectivity of 1.48×10^(11)*** disclose the mechanism of the PTE conversion in the tubular structure with the assistance of theoretical *** addition,the device exhibits excellent performances in wide-angle and polarization-dependent *** work presents an approach to remarkably improve the performance of photodetector by concentrating light and corresponding heat generated,and the proposed self-rolled devices thus hold remarkable promises for next-generation on-chip photodetection.

关键词： illumination energy primarily

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春播芝麻拱棚育秧移栽模式

黑龙江农业科学 2024年第4期 109-112页

作者：桑利民张春雨周波李一桑燕崔彦芹郭元章徐桂真承德市农林科学院农作物研究所河北承德067000 阳原县农业农村局河北阳原075800 宽城县农牧局河北宽城067600 河北省农林科学院粮油作物研究所河北石家庄050035

为充分发挥芝麻作物的移栽特性,探索新的芝麻栽培模式,河北省农林科学院粮油作物研究所结合近年来的试验示范和生产实践,总结出芝麻拱棚育秧移栽技术模式。模式中的技术要点确立了拱棚地块选择、播种量、拱棚育秧技术、秧苗移栽技术、... 详细信息

为充分发挥芝麻作物的移栽特性,探索新的芝麻栽培模式,河北省农林科学院粮油作物研究所结合近年来的试验示范和生产实践,总结出芝麻拱棚育秧移栽技术模式。模式中的技术要点确立了拱棚地块选择、播种量、拱棚育秧技术、秧苗移栽技术、施肥五项关键指标标准。分析了该模式的4个优点,有效缩短生育期、高产稳产并举、减少虫害防治次数、病害发生与平种模式无差异,缺点是不适用于6.67 hm^(2)以上规模化芝麻种植园区。芝麻拱棚育秧移栽模式对扩大种植区域和快速形成生产力具有重要意义。

关键词：承德春播芝麻拱棚育秧移栽