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Study of temporal evolution of emission spectrum in a steeply rising submillimeter burst

Research in Astronomy and Astrophysics 2016年第1期16卷 67-72页

作者： Jian-Ping Li ai-hua Zhou Xin-Dong Wang Key Laboratory of Dark Matter and Space Astronomy Chinese Academy of Sciences Nanjing 210008 China Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 China School of Public Administration Hohai University Nanjing 210098 China

The temporal evolution of a spectrum during a steeply rising submillimeter（THz） burst that occurred on 2003 November 2 was investigated in detail for the first *** show that the flux density of the THz spectrum increased steeply with frequency above 200 *** average rising rates reached a value of 235 sfu GHz^（-1）（corresponding to spectral index α of 4.8） during the *** flux densities reached about 4 000 and 70 000 sfu at 212 and 405 GHz at the maximum phase,*** emissions at 405 GHz maintained such a continuous high level that they largely exceeded the peak values of the microwave（MW） spectra during the main *** studies suggest that only energetic electrons with a low-energy cutoff of~ 1 MeV and number density of ~ 10~6-10~8 cm^（-3） can produce such a strong and steeply rising THz component via gyrosynchrotron radiation based on numerical simulations of burst spectra in the case of a nonuniform magnetic *** electron number density N,derived from our numerical fits to the THz temporal evolution spectra,increased substantially from 8 ×10~6 to 4 × 10~8 cm^（-3）,i.e.,the N value increased 50 times during the rise *** the decay phase it decreased to 7 ×10~7 cm^（-3）,i.e.,it decreased by about five times from the maximum *** total electron number decreased an order of magnitude from the maximum phase to the decay ***,the variation in amplitude of N is only about one time in the MW emission source during this burst,and the total electron number did not decrease but increased by about 20%during the decay ***,we find that the THz source radius decreased by about 24%while the MW source radius,on the contrary,increased by 28%during the decay phase.

关键词： Sun: submillimeter burst -- Sun: energetic electrons -- Sun: radio source size

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2型糖尿病家庭血糖监测频次与控制对患者住院因素影响的研究

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福州总医院学报 2010年第2期17卷 69-72页

作者：王爱民曾华张玲叶洪江徐向进福州总医院内分泌科福州总医院医务部感染控制科

目的:探讨2型糖尿病家庭血糖监测频次与控制对患者住院因素的影响。方法:回顾性地调查了2598例患者10年家庭血糖监测情况、接受糖尿病教育情况、门诊随访周期与血糖达标、病情控制、住院情况的影响关系。结果:定期接受糖尿病教育、按时... 详细信息

目的:探讨2型糖尿病家庭血糖监测频次与控制对患者住院因素的影响。方法:回顾性地调查了2598例患者10年家庭血糖监测情况、接受糖尿病教育情况、门诊随访周期与血糖达标、病情控制、住院情况的影响关系。结果:定期接受糖尿病教育、按时门诊随访指导、家庭成员支持、经济条件较好的患者血糖监测频次多、血糖控制达标率高,并发症发生少,与住院情况明显相关,P<0.01;患者的文化程度、月收入、与配偶共住等条件是影响患者血糖控制和住院情况的重要因素,P<0.05。结论:2型糖尿病家庭血糖监测频次对患者血糖控制、并发症的发生和住院情况均有很大的影响,患者自身要求的高低是影响血糖控制达标的关健;随访周期的长短是危险因素防范的前提;家庭氛围的优劣是生活质量提高的基础;经济收入的差异是依从性遵守的重要条件。

关键词： 2型糖尿病家庭血糖监测频次控制住院因素

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珠三角流动人口基本公共卫生服务利用及影响因素分析

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中国公共卫生管理 2016年第5期32卷 613-617页

作者：郝爱华张薇刘志芳许淼杰徐宁刘礼平邓惠鸿广东省公共卫生研究院广东广州511430 兰州市疾病预防控制中心甘肃兰州730000 广东省妇幼保健院广东省疾病预防控制中心

目的了解流动人口基本公共卫生服务利用现状及影响因素,为进一步推动流动人口基本公共卫生服务工作的有序开展提供参考依据。方法采用非随机配额抽样方法,对2 736名流动人口基本公共卫生服务利用调查资料采用单因素和多因素非条件Logis... 详细信息

目的了解流动人口基本公共卫生服务利用现状及影响因素,为进一步推动流动人口基本公共卫生服务工作的有序开展提供参考依据。方法采用非随机配额抽样方法,对2 736名流动人口基本公共卫生服务利用调查资料采用单因素和多因素非条件Logistic回归分析。结果流动人口基本公共卫生服务利用率30.37%显著低于户籍人口利用率43.23%（χ^2=98.05,P〈0.001）。单因素分析发现,婚姻、文化程度、收入、医保、对社区印象、听说过基本公共卫生服务、健康知识掌握程度、服务需求、接受服务意愿与基本公共卫生服务利用有关;多因素分析显示,听说过基本公共卫生服务项目（OR=3.98）、需要基本公共卫生服务（OR=2.34）、有医疗保险（OR=2.17）、对社区卫生服务中心印象好（OR=1.64）、愿意配合社区服务中心接受免费基本公共卫生服务项目（OR=1.62）、收入高（OR=1.37）是主要影响因素。结论流动人口基本公共卫生服务利用水平较低,医保制度的不完善和宣传不到位起重要作用。

关键词：流动人口基本公共卫生服务利用 Logistic回归分析

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Maximum flux density of the gyrosynchrotron spectrum in a nonuniform source

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Chinese Journal of Astronomy and Astrophysics 2009年第4期9卷 475-484页

作者： ai-hua Zhou Rong-Chuan Wang Cheng-Wen Shao Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

The maximum flux density of a gyrosynchrotron radiation spectrum in a magnetic diploe model with self absorption and gyroresonance is calculated. Our calculations show that the maximum flux density of the gyrosynchrotron spectrum increases with increasing low-energy cutoff, number density, input depth of energetic electrons, magnetic field strength and viewing angle, and with decreasing energy spectral index of energetic electrons, number density and temperature of thermal electrons. It is found that there are linear correlations between the logarithms of the maximum flux density and the above eight parameters with correlation coefficients higher than 0.91 and fit accuracies better than 10%. The maximum flux density could be a good indicator of the changes of these source parameters. In addition, we find that there are very good positive linear correlations between the logarithms of the maximum flux density and peak frequency when the above former five parameters vary respectively. Their linear correlation coefficients are higher than 0.90 and the fit accuracies are better than 0.5%.

关键词： Sun flare-Sun radio emission-Sun maximum flux

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高接‘瑞香红’在不同产区果实品质差异性分析

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果树资源学报 2024年第4期5卷 1-8,11页

作者：姚磊孙鲁龙张康宁张晨蕾马永涛曹静瑶高华西北农林科技大学陕西杨凌712100

【目的】探究并找到高接‘瑞香红’适宜的栽植区域,为‘瑞香红’后续的推广提供理论依据和参考。【方法】连续两年选取8个大面积种植的高接‘瑞香红’的代表性果园(陕西杨陵、陕西富平、陕西宝鸡、陕西白水、陕西旬邑、陕西长武、甘肃... 详细信息

【目的】探究并找到高接‘瑞香红’适宜的栽植区域,为‘瑞香红’后续的推广提供理论依据和参考。【方法】连续两年选取8个大面积种植的高接‘瑞香红’的代表性果园(陕西杨陵、陕西富平、陕西宝鸡、陕西白水、陕西旬邑、陕西长武、甘肃庆城、云南红河),调查各果园基本气象数据,在成熟期选取果实为试验材料,测量其果实品质相关指标,比较各产区果实品质差异。【结果】1)各产区‘瑞香红’均能表现出全红着色、果形高桩,果形指数为1.00;陕西旬邑、陕西长武地区果实单果质量、纵径、横径表现较大,杨凌地区和云南红河地区表现较小;‘瑞香红’果实硬度较大,平均去皮硬度为8.36 kg·cm^(-2);2)甘肃庆城,陕西长武,陕西宝鸡‘瑞香红’可溶性固形物质量分数达到了16%,陕西杨凌可溶性固形物质量分数最低为12.85%;甘肃庆城果实酸度最高为0.36%,白水地区较其他地区酸度低。3)‘瑞香红’果实固酸比差异较大,陕西白水2地区固酸比最大152.58,陕西富平1地区固酸比最小为42.38。4)功能性物质差异:总酚、总黄酮含量方面各产区没有显著差异。总类黄酮含量,陕西白水4地区含量最低,为1.35 mg·g^(-1),陕西杨陵含量最高的为1.89 mg·g^(-1);维生素C含量,高海拔地区960~1380 m显著高于中低海拔地区;花青苷含量,陕西白水1地区最高为0.62 mg·g^(-1),最低的甘肃庆城为0.25 mg·g^(-1)。5)不同产区‘瑞香红’在糖组分含量上存在显著性差异。各地区果糖含量均较高;果实蔗糖含量随海拔高度升高而升高;低海拔地区的葡萄糖含量总体高于高海拔地区;陕西宝鸡的山梨醇含量最高为73.49 mg·g^(-1),陕西富平1的山梨醇含量最低,为29.16 mg·g^(-1)。甜度值甘肃庆城最大为271.34,陕西富平1的甜度值最小为218.67。6)不同产区‘瑞香红’综合表现由好到差依次为:陕西白水1>陕西宝鸡>甘肃庆城>陕西白水2>陕西长武>陕西富平2>陕西白水3>陕西白水4>陕西旬邑>陕西杨凌>陕西富平1>云南红河。【结论】综合各项果实品质指标,筛选出‘瑞香红’最适宜栽培的区域为黄土高原产区,海拔范围557~1380 m。

关键词：苹果瑞香红果实品质产区海拔

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New Minor Cyclopeptides from Arenaria oreophila (Caryophyllaceae)

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Chinese Chemical Letters 2006年第4期17卷 477-480页

作者： ai Qun JIA Ning hua TAN Jun ZHOU State Key Laboratory of Phytochemistry and Plant Resources in West China Kuning Institute of Botany Graduate School of the Chinese Academy of Sciences Chinese Academy of Sciences Kunming 650204

New minor cyclic peptides, named arenariphilin C 1 and arenariphilin D 2, were isolated from the whole plants of Arenaria oreophila （Caryophyllaceae）. Their structures were determined as cyclo（Pro^1-Pro2-Leu^1-Leu2-Phe-Ser-Gly-Thr） and cyclo （Ser-Cys） on the basis of spectroscopic data, especially by two-dimension NMR （2D NMR） technologies.

关键词： Arenaria oreophila Caryophyllaceae cyclopeptide arenariphilin C arenariphilin D.

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Selfinjective Koszul Algebras of Finite Complexity

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Acta Mathematica Sinica,English Series 2009年第12期25卷 2179-2198页

作者： Jin Yun GUO ai hua LI Qiu Xian WU Department of Mathematics Xiangtan University Xiangtan 411105 P. R. China Department of Mathematics Hu'nan Normal University Changsha 410081 P. R. China

In this paper, we study selfinjective Koszul algebras of finite complexity. We prove that the complexity is a nonnegative integer when it is finite; and that the category Yt of modules with complexity less or equal to t, is resolving and coresolving. We show that for each 0 ≤ 1 ≤ m there exist a family of modules of complexity 1 parameterized by G（l, m）, the Grassmannian of l-dimensional subspaces of an m-dimensional vector space V, for the exterior algebra of V. Using complexity, we also give a new approach to the representation theory of a tame symmetric algebra with vanishing radical cube over an algebraically closed field of characteristic 0, via skew group algebra of a finite subgroup of SL（2, C） over the exterior algebra of a 2-dimensional vector space.

关键词： selfinjective Koszul algebra complexity skew group algebra tame symmetric algebra

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数字化背景下基于边缘计算驱动的智慧农业

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技术经济 2024年第7期43卷 40-52页

作者：冯宇赵骅王泽昊姚娜娜重庆大学经济与工商管理学院重庆400044 华东师范大学社会发展学院上海200241 西北农林科技大学经济管理学院杨凌712100

在全球数字经济浪潮中,ai、云计算、大数据等科技革命性地重塑经济民生,驱使农业迈入数据导向的数字纪元。农业经历了手工作业、机械化至初步自动化,现正快速步入新一代信息技术引领的智慧农业时代。本文聚焦于边缘计算驱动的智慧农业构... 详细信息

在全球数字经济浪潮中,ai、云计算、大数据等科技革命性地重塑经济民生,驱使农业迈入数据导向的数字纪元。农业经历了手工作业、机械化至初步自动化,现正快速步入新一代信息技术引领的智慧农业时代。本文聚焦于边缘计算驱动的智慧农业构建,这一技术范式对于克服农业数据管理和决策难题至关重要。边缘计算凭借数据近源处理,实现数据的实时分析与低延迟响应,展现对农业基础设施局限的高适应性和稳定性。实证研究数据表明,集成边缘智能方案极大提升了数据处理能力并降低成本,验证了其在协同作用下效率显著提升的潜力。研究不仅关注生产效率的提升,还深入分析边缘计算在农业数据处理与决策中的多元效益,涵盖经济效益、社会及生态层面;不仅巩固了农产品市场稳定与可持续发展的根基,还为智慧农业的创新实践与未来发展提供了坚实的理论框架和战略导向。

关键词：边缘计算数据驱动智慧农业可持续发展

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Diagnostics from three rising submillimeter bursts

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Research in Astronomy and Astrophysics 2016年第2期16卷 97-104页

作者： ai-hua Zhou Jian-Ping Li Xin-Dong Wang Key Laboratory of Dark Matter and Space Astronomy Chinese Academy of Sciences Purple Mountain Observatory Chinese Academy of Sciences School of Public Administration Hohai University

In this paper we investigate three novel rising submillimeter （THz） bursts that occurred sequen- tially in Super Active Region NOAA 10486. The average rising rate of the flux density above 200 GHz is only 20 sfu GHz-1 （corresponding to spectral index α of 1.6） for the THz spectral components of the 2003 October 28 and November 4 bursts, but it attained values of 235 sfu GHz-1 （α = 4.8） in the 2003 November 2 burst. The steeply rising THz spectrum can be produced by a population of highly relativistic electrons with a low-energy cutoff of 1 MeV, but it only requires a low-energy cutoff of 30 keV for the two slowly rising THz bursts, via gyrosynchrotron （GS） radiation based on our numerical simulations of burst spectra in the magnetic dipole field case. The electron density variation is much larger in the THz source than in the microwave （MW） source. It is interesting that the THz source radius decreased by 20%-50% during the decay phase for the three events, but the MW source increased by 28% for the 2003 November 2 event. In the paper we will present a formula that can be used to calculate the energy released by ultrarel- ativistic electrons, taking the relativistic correction into account for the first time. We find that the energy released by energetic electrons in the THz source exceeds that in the MW source due to the strong GS radi- ation loss in the THz range, although the modeled THz source area is 3-4 orders smaller than the modeled MW source one. The total energies released by energetic electrons via the GS radiation in radio sources are estimated, respectively, to be 5.2 × 10^33, 3.9 × 10^33 and 3.7 × 10^32 erg for the October 28, November 2 and 4 bursts, which are 131, 76 and 4 times as large as the thermal energies of 2.9 × 10^31, 2.1 × 10^31 and 5.2 × 10^31 erg estimated from soft X-ray GOES observations.

关键词： Sun submillimeter emission -- Sun energetic electrons -- Sun radio source environment

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Clinicopathological features of 11 cases of chronic hepatitis B infection complicated with primary biliary cholangitis

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World Journal of Hepatology 2023年第4期15卷 577-584页

作者： Yun Ye Qian zhang Zhong-hua Lu You-Wen Tan Department of Hepatology The Third Hospital of Zhenjiang Affiliated Jiangsu UniversityZhenjiang 212003Jiangsu ProvinceChina Department of Liver Disease Wuxi No.5 People’s Hospital Affiliated to Jiangnan UniversityWuxi 214000Jiangsu ProvinceChina

BACKGROUND Only a few cases of chronic hepatitis B(CHB)with primary biliary cholangitis(PBC)have been reported based on histological evidence from liver *** To observe the clinicopathological features and outcomes of 11 patients with CHB infection complicated by *** Eleven patients with CHB and PBC who underwent liver biopsy at the Zhenjiang Third Hospital,affiliated with Jiangsu University,and Wuxi Fifth People’s Hospital,from January 2005 to September 2020,were *** patients initially visited our hospital with CHB and were pathologically diagnosed with CHB and *** Only five had elevated alkaline phosphatase levels,nine were positive for antimitochondrial antibody(AMA)-M2,and two were negative for *** had jaundice and pruritus symptoms,10 had mildly abnormal liver function,and one had severely elevated bilirubin and liver enzyme *** pathological characteristics of CHB complicated by PBC overlapped with those of PBCautoimmune hepatitis(aiH).When necroinflammation of the portal area is not obvious,the pathological features of PBC are predominant,similar to the features of PBC *** the interface is severe,biliangitis will occur,with a large number of ductular reactions in zone *** the PBC-aiH overlap pathology,this pathology is characterized by a small amount of plasma cell *** PBC,lobulitis is often *** This is the first large case series to show that the rare pathological features of CHB with PBC are similar to those of PBC-aiH and small duct injury was observed.

关键词： Chronic hepatitis B Primary biliary cholangitis Clinicopathological features Antimitochondrial antibody

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