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Formation of the CME Leading Edge Observed in the 2003 February 18 Event

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Chinese Journal of Astronomy and Astrophysics 2006年第6期6卷 741-750页

作者： Xing-ming Bao Hong-Qi Zhang Jun Lin National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 National Astronomical Observatories / Yunnan Observatory Chinese Academy of Sciences Kunming 650011 harvard-Smithsonian Center for Astrophysics 60 Garden Street Cambridge MA 02138 USA

This work investigates a typical coronal mass ejection （CME） observed on 2003 February 18, by various space and ground instruments, in white light, ha, EUV and X- ray. The ha and EUV images indicate that the CME started with the eruption of a long filament located near the solar northwest limb. The white light coronal images show that the CME initiated with the rarefaction of a region above the solar limb and followed by the formation of a bright arcade at the boundary of the rarefying region at height 0.46 Re above the solar surface. The rarefying process synchronized with the slow rising phase of the eruptive filament, and the CME leading edge was observed to form as the latter started to accelerate. The lower part of the filament brightened in ha as the filament rose to a certain height and parts of the filament was visible in the GOES X-ray images during the rise. These brightenings imply that the filament may be heated by the magnetic reconnection below the filament in the early stage of the eruption. We suggest that a possible mechanism which leads to the formation of the CME leading edge and cavity is the magnetic reconnection which takes place below the filament after the filament has reached a certain height.

关键词： Sun coronal mass ejections (CMEs) - Sun filaments - Sun flares

Ranging behavior of the François’langur(Trachypithecus francoisi)in limestone habitats of Nonggang,China

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Integrative Zoology 2011年第2期6卷 157-164页

作者： Qihai ZHOU Chengming HUang ming LI Fuwen WEI Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijingChina College of Sciences Guangxi Normal UniversityGuilinChina National Zoological Museum Institute of ZoologyChinese Academy of SciencesBeijingChina

Ranging behavior is an important aspect of animal behavior that researchers use to investigate ecological influences on individual *** collected data on the ranging behavior of one group of François’langurs(Trachypithecus francoisi)between August 2003 and July 2004 in a limestone habitat within Nonggang Nature Reserve,*** evaluated the influences of food availability,water resources and sleeping sites on ranging *** the study period,the total home range size for the study group was 64.5 or(69.3 ha if the lacunae within the borders in which langurs were not observed were included),and the mean daily path length was 541 *** are well within the range of variation reported in Trachypithecus *** monthly range size was between 9.8 and 23.3 ha,and monthly range size correlated negatively with young leaf *** langurs tended to use a larger range size during young leaf-lean *** langurs did not use their home range uniformly,and 74%of their activities occurred within 35%of their home *** most heavily used quadrats in the home range were located near the most frequently used sleeping sites,suggesting that sleeping sites have a significant influence on the ranging behavior of François’langurs in limestone habitats.

关键词： François’langur limestone habitat ranging behavior Trachypithecus francoisi

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煤粉中内在矿物对煤焦孔隙结构的影响

中国矿业大学学报 2009年第6期38卷 810-814页

作者：张洪李迎哈斯李欢孙明中国矿业大学化工学院江苏徐州221116

用浮沉法从4种煤粉中分选出低密度和中等密度的煤粉,进行岩相分析后分别在马弗炉和滴管炉上制焦,用SEM观察煤焦孔结构,用气体吸附仪测定煤焦比表面积和孔容.结果发现,低密度级别煤粉中壳质组和镜质组含量较高,而中等密度级别煤粉中惰质... 详细信息

用浮沉法从4种煤粉中分选出低密度和中等密度的煤粉,进行岩相分析后分别在马弗炉和滴管炉上制焦,用SEM观察煤焦孔结构,用气体吸附仪测定煤焦比表面积和孔容.结果发现,低密度级别煤粉中壳质组和镜质组含量较高,而中等密度级别煤粉中惰质组含量较高.在马弗炉条件下,内在矿物起着增大煤焦孔隙的作用;在滴管炉条件下,随着煤变质程度降低,内在矿物由对无烟煤煤焦的增大孔隙作用变化到阻碍烟煤煤焦多孔结构形成作用.分析了矿物质与胶质体在不同条件下相互作用机理,解释了矿物对煤焦结构的影响.

关键词：矿物煤焦结构胶质体

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基于自对偶测度的Choquet积分

河北大学学报（自然科学版） 2008年第2期28卷 113-115页

作者：哈明虎李鑫河北大学数学与计算机学院河北保定071002

提出了自对偶测度的定义,讨论了自对偶测度的简单性质,给出了基于自对偶测度的Choquet积分的定义,并讨论了该积分的基本性质.

关键词：自对偶测度下连续性概率测度 Choquet积分

Inclusion of peanut in wheat–maize rotation increases wheat yield and net return and improves soil organic carbon pool by optimizing bacterial community

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Journal of Integrative Agriculture 2023年第11期22卷 3430-3443页

作者： ZOU Xiao-xia HUang ming-ming LIU Yan SI Tong ZHang Xiao-jun YU Xiao-na GUO Feng WAN Shu-bo Shandong Provincial Key Laboratory of Dryland Farming Technology/Shandong Peanut Industry Collaborative Innovation Center/College of Agronomy Qingdao Agricultural UniversityQingdao 266109P.R.China Institute of Crop Germplasm Resources Shandong Academy of Agricultural SciencesJinan 250100P.R.China

Improving soil quality while achieving higher productivity is the major challenge in the agricultural industry. Wheat(Triticum aestivum L.)–maize(Zea mays L.)(W–M) rotation is the dominant planting pattern in the Huang-Huaihai Plain and is important for food security in China. However, the soil quality is deteriorating due to the W–M rotation’s long-term, intensive, and continuous cultivation. Introducing legumes into the W–M rotation system may be an effective way to improve soil quality. In this study, we aimed to verify this hypothesis by exploring efficient planting systems(wheat–peanut(Arachis hypogaea L.)(W–P) rotation and wheat rotated with maize and peanut intercropping(W–M/P)) to achieve higher agricultural production in the Huang-Huai-hai Plain. Using traditional W–M rotation as the control, we evaluated crop productivity, net returns, soil microorganisms(SMs), and soil organic carbon(SOC) fractions for three consecutive years. The results indicated that wheat yields were significantly increased under W–P and W–M/P(382.5–579.0 and 179.8–513.1 kg ha-1, respectively) compared with W–M. W–P and W–M/P provided significantly higher net returns(58.2 and 70.4%, respectively) than W–M. W–M/P and W–M retained the SOC stock more efficiently than W–P, increasing by 25.46–31.03 and 14.47–27.64%, respectively, in the 0–20 cm soil layer. Compared with W–M, W–M/P improved labile carbon fractions;the sensitivity index of potentially mineralizable carbon, microbial biomass carbon(MBC), and dissolved organic carbon was 31.5, 96.5–157.2, and 17.8% in 20–40, 10–40, and 10–20 cm soil layers, respectively. The bacterial community composition and bacteria function were altered as per the soil depth and planting pattern. W–M/P and W–M exhibited similar bacterial community composition and function in 0–20 and 20–40 cm soil layers. Compared with W–P, a higher abundance of functional genes, namely, contains mobile elements and stress-tolerant, and a lower abundance of genes, namely,

关键词： composite planting carbon sequestration labile carbon fraction bacterial community structure bacterial functions

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基于小样本的安全第一投资组合优化模型

河北大学学报（哲学社会科学版） 2015年第1期40卷 116-119页

作者：杨扬哈明虎河北大学管理学院河北保定071002

为了解决小样本情况下安全第一投资组合选择问题,将结构风险最小化原则引入投资组合选择过程中。根据结构风险最小化原则的直接实现,构建了含有范数约束的安全第一投资组合优化模型,并研究了模型参数的选取方法。实验结果验证了本模型... 详细信息

为了解决小样本情况下安全第一投资组合选择问题,将结构风险最小化原则引入投资组合选择过程中。根据结构风险最小化原则的直接实现,构建了含有范数约束的安全第一投资组合优化模型,并研究了模型参数的选取方法。实验结果验证了本模型的有效性。

关键词：小样本结构风险最小化原则投资组合选择安全第一

Carbon and nitrogen allocations in corn grown in Central and Northeast China: different responses to fertilization treatments

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Journal of Integrative Agriculture 2015年第6期14卷 1212-1221页

作者： MIAO Hui-tian Lü Jia-long XU ming-gang ZHang Wen-ju HUang Shao-min PENG Chang CHEN Li-ming College of Natural Resources and Environment Northwest A&F University Key Laboratory of Crop Nutrition and Fertilization Ministry of Agriculture/Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural Sciences Institute of Plant Nutrition and Environmental Resources Science Henan Academy of Agricultural Sciences Agricultural Resources and Environment Research Center Jilin Academy of Agricultural Sciences School of Environment and Natural Resources The Ohio State University/The Ohio Agricultural Research and Development Center

In order to reveal the impact of various fertilization strategies on carbon（C） and nitrogen（N） accumulation and allocation in corn（Zea mays L.）, corn was grown in the fields where continuous fertilization management had been lasted about 18 years at two sites located in Central and Northeast China（Zhengzhou and Gongzhuling）, and biomass C and N contents in different organs of corn at harvest were analyzed. The fertilization treatments included non-fertilizer（control）, chemical fertilizers of either nitrogen（N）, or nitrogen and phosphorus（NP）, or phosphorus and potassium（PK）, or nitrogen, phosphorus and potassium（NPK）, NPK plus manure（NPKM）, 150% of the NPKM（1.5NPKM）, and NPK plus straw（NPKS）. The results showed that accumulated C in aboveground ranged from 2 550–5 630 kg ha^–1 in the control treatment to 9 300–9 610 kg ha^–1 in the NPKM treatment, of which 57–67% and 43–50% were allocated in the non-grain organs, respectively. Accumulated N in aboveground ranged from 44.8–55.2 kg ha^-1 in the control treatment to 211–222 kg ha^–1 in the NPKM treatment, of which 35–48% and 33–44% were allocated in the non-grain parts, respectively. C allocated to stem and leaf for the PK treatment was 65 and 49% higher than that for the NPKM treatment at the both sites, respectively, while N allocated to the organs for the PK treatment was 18 and 6% higher than that for the NPKM treatment, respectively. This study demonstrated that responses of C and N allocation in corn to fertilization strategies were different, and C allocation was more sensitive to fertilization treatments than N allocation in the area.

关键词： fertilization allocation Northeast phosphorus fertilizers potassium organs ranged accumulated allocated

Effect of Chlorimuron-Ethyl on Biochemical Mechanism in Tolerant Sugar Beet

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Agricultural Sciences in China 2010年第12期9卷 1771-1776页

作者： DING Wei MA Feng-ming CHENG Zhuo TAO Bo Agronomy College Northeast Agricultural University Harbin 150030 P.R.China College of Resource and Environmental Science Northeast Agricultural University Harbin 150030 P.R.China

Effect of chlorimuron-ethyl on biochemical mechanism in tolerant sugar beet was investigated to provide basic data on using the tolerant genotype properly. Tolerant sugar beet was used to analyze its biochemical mechanism under chlorimuron- ethyl stress with frame culture in field and water culture. Glutathione S-transferase （GST） activity of leaves in tolerant sugar beet was remarkably increased as chlorimuron-ethyl was preemergence applicated at 0.5 and 1.5 g a.i. hw1, at the same time glutathione （GSH） content increased 50.0-490.1 p.g g-~. GST activity of sensitive sugar beet decreased 122.6 U mg-~ min-1 compared with tolerant sugar beet and GSH content only increased to 7.4 p.g g-~ at chlorimuron-ethyl 0.5 g a.i. ha-~ in sensitive sugar beet. The higher GST activity and GSH content conjugated chlorimuron-ethyl absorbed in tolerant sugar beet and made it lost activity. Acetolactate synthases （ALS） activity of the tolerant sugar beet increased to 62.5 and 70.6%, respectively in seedling and leaf growth period, at the same time ALS activity of the sensitive variety was decreased to 36.8 and 64.8%, respectively. The rapidly increased GST activity, GSH content, and ALS, the target enzyme activity were the important pathways for enduring chlorimuron-ethyl in tolerant sugar beet.

关键词： chlorimuron-ehtyl sugar beet glutathione S-transferase glutathione acetolactate synthases

Yield and water use responses of winter wheat to irrigation and nitrogen application in the North China Plain

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Journal of Integrative Agriculture 2018年第5期17卷 1194-1206页

作者： ZHang ming-ming DONG Bao-di QIAO Yun-zhou SHI Chang-hai Yang Hong Wang Ya-kai LIU Meng-yu Key Laboratory of Agricultural Water Resources Hebei Laboratory of Agricultural Water-Saving Center for Agricultural Resources Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences Shijiazhuang 050021 P.R. China University of Chinese Academy of Sciences Beijing 100049 P.R. China Qingdao Agricultural University Qingdao 266109 P.R.China

With increasing water shortage resources and extravagant nitrogen application, there is an urgent need to optimize irrigation regimes and nitrogen management for winter wheat（Triticum aestivum L.） in the North China Plain（NCP）. A 4-year field experiment was conducted to evaluate the effect of three irrigation levels（W1, irrigation once at jointing stage; W2, irrigation once at jointing and once at heading stage; W3, irrigation once at jointing, once at heading, and once at filling stage; 60 mm each irrigation） and four N fertilizer rates（N0, 0; N1, 100 kg N ha-（-1）; N2, 200 kg N ha-（-1）; N3, 300 kg N ha-（-1）） on wheat yield, water use efficiency, fertilizer agronomic efficiency, and economic benefits. The results showed that wheat yield under W2 condition was similar to that under W3, and greater than that under W1 at the same nitrogen level. Yield with the N1 treatment was higher than that with the N0 treatment, but not significantly different from that obtained with the N2 and N3 treatments. The W2 N1 treatment resulted in the highest water use and fertilizer agronomic efficiencies. Compared with local traditional practice（W3 N3）, the net income and output-input ratio of W2 N1 were greater by 12.3 and 19.5%, respectively. These findings suggest that two irrigation events of 60 mm each coupled with application of 100 kg N ha-（–1） is sufficient to provide a high wheat yield during drought growing seasons in the NCP.

关键词： winter wheat irrigation regime nitrogen application grain yield water use efficiency