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塔克拉玛干地区春季沙尘演变及气候因素分析

中国环境科学 2007年第1期27卷 19-23页

作者：肖风劲国家气候中心气候系统开放实验室北京100081

利用塔克拉玛干地区18个气象台站的观测资料，分析了该地区1961—2005年春季沙尘暴发生和演变规律，并分析了降水、温度、风速、起沙风（≥5m／s）日数等气象条件的变化特征及其对沙尘暴发生的影响．结果表明，塔克拉玛干地区除轮台、... 详细信息

利用塔克拉玛干地区18个气象台站的观测资料，分析了该地区1961—2005年春季沙尘暴发生和演变规律，并分析了降水、温度、风速、起沙风（≥5m／s）日数等气象条件的变化特征及其对沙尘暴发生的影响．结果表明，塔克拉玛干地区除轮台、巴楚、塔什库尔干外。其余15个台站的沙尘日数呈现出明显的逐年递减趋势，其中11个台站减少显著．该地区冬季、春季降水和温度呈增加趋势，而春季平均风速则不断减小，起沙风日数也呈现出显著的减小趋势．沙尘源区的平均风速和起沙风日数与沙尘日数的相关系数分别达到0．662和0．674，呈显著的正相关（P〈0．01），表明大风是引起沙尘暴的直接原因．沙尘日数与春季和冬季降水相关系数分别为-0．589和-0．274，与春季降水呈显著的负相关（P〈0．01），而与冬季降水的相关性不显著，说明春季降水对该地区的沙尘暴有直接的抑制作用，而冬季降水对春季沙尘暴的影响不大；春季和冬季平均平均气温与沙尘日数呈不显著负相关，表明冬、春季节的气温变化对春季沙尘暴的影响有限．

关键词：沙尘日数气候参数春季沙尘源区塔克拉玛干地区

Fractionation of Heavy Metals in Sediments from Dianchi Lake,China

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Pedosphere 2007年第2期17卷 265-272页

作者： LI Ren-Ying YANG Hao ZHOU Zhi-Gao Lü Jun-Jie SHAO xiao-Hua jin feng State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 （China）. College of Geography Science Nanjing Normal University Nanjing 210097 （China） Department of Applied Meteorology Nanjing University of Information Science ＆ Technology Nanjing 210044 （China）

Fractionation of heavy metals in sediments can help in understanding potential hazards of heavy metals. The present study analyzed total concentrations and fractions of selected heavy metals （Cd, Cr, Cu, Pb, and Zn） in surface sediments from Dianchi Lake, Yunnan Province, China, as well as factors that may affect distributions of the various heavy metal fractions. Total concentrations of the heavy metals decreased in the order Zn 〉 Cu 〉 Pb 〉 Cr 〉 Cd. These heavy metals, except Cr, were much higher than their background levels, indicating that Dianchi Lake was polluted by Cd, Zn, Pb, and Cu. Cadmium occurred mainly as the non-residual fraction （sum of the HOAc-soluble, reducible, and oxidizable fractions）（97.6%）, and Zn （55.7%） was also predominantly found in the non-residual fraction. In contrast, most of the Cr （88.5%）, Pb （81.8%）, and Cu （59.2%） occurred in the residual fraction. Correlation analysis showed that total heavy metal concentrations, organic matter and reducible Fe were the main factors affecting the distributions of the various heavy metal fractions. In the Walhai section of Dianchi Lake （comprising 97% of the lake area）, the concentrations of Cd, Zn, Pb, and Cu in the non-residual fraction were significantly lower （P ≤ 0.01 or 0.05） than those of the Caohal section （3% of the lake area）. This indicated that potential heavy metal hazards in the Caohai section were greater than the Waihai section.

关键词： Dianchi Lake heavy metal fractions lake sediment organic matter reducible Fe

Expression and Identification of Mutated Osteoprotegerin in Culture Cells and Larvae of Silkworm

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Acta Biochimica et Biophysica Sinica 2004年第5期36卷 331-335页

作者： Hai-Long xiao, Yong-feng jin, and Yao-Zhou ZHANG1* Institute of Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310029, China College of Life Sciences, Zhejiang University of Science & Technology, Hangzhou 310018, China College of Life Sciences Zhejiang University of Science & TechnologyHangzhou 310018China Institute of Biochemistry College of Life SciencesZhejiang UniversityHangzhou 310029China

The mutated osteoprotegerin (OPG-372) gene was inserted into the baculovirus transfer vector pBacPAK8, and the recombinant plasmid was co-transfected with linearized Bm-BacPAK6 virus DNA into BmN cells, then homologous recombination occurred inside the cells. The recombinant virus BmNPV-OPG- 372 was screened and identified by Southern blotting. The recombinant human OPG-372 was expressed in cultured cells and the larvae of silkworm by inoculation of recombinant virus. The expression products were run on the SDS-PAGE and their immunoreactivities were determined by Western blotting. It was found that a 42 kD recombinant protein was expressed in BmN cells and a 46 kD one in larvae respectively. The bioactivi- ties of the recombinant proteins were determined by hypocalcemic effect assay in the mice. The results showed that the recombinant proteins had a significant hypocalcemic effect on mice sera.

关键词： OPG-372 silkworm baculovirus expression system hypocalcemic effect

中国广西薹草属(莎草科)一新种——大苗山薹草(英文)

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植物分类学报 2008年第2期46卷 226-229页

作者：金孝锋郑朝宗杭州师范大学生命与环境科学学院杭州310036 浙江大学生命科学学院杭州310012

描述了我国广西大苗山莎草科Cyperaceae一新种——大苗山薹草Carex damiaoshanensis X. F. jin & C. Z. Zheng。本种形态上与花葶薹草C. scaposa C. B. Clarke接近, 区别主要在秆、秆生叶和支花序轴均无毛, 支花序数较少, 小穗疏生雌花... 详细信息

描述了我国广西大苗山莎草科Cyperaceae一新种——大苗山薹草Carex damiaoshanensis X. F. jin & C. Z. Zheng。本种形态上与花葶薹草C. scaposa C. B. Clarke接近, 区别主要在秆、秆生叶和支花序轴均无毛, 支花序数较少, 小穗疏生雌花。对秆、支花序梗、秆生叶和小坚果扫描电镜观察也显示了这二者的区别。

关键词：薹草属大苗山薹草中国莎草科广西新种

县域经济视角下南方民族地区农村青年就业模式研究——以广西恭城瑶族自治县为例

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安徽农业科学 2011年第24期39卷 15116-15118,15125页

作者：俸晓锦合肥工业大学管理学院安徽合肥230009 广西工学院教务处广西柳州545006

通过问卷调查,对生态农业县和非生态农业县农村青年的就业心理进行了比较分析,指出县域经济发展是影响农村青年就业模式的主要因素。并以广西恭城瑶族自治县为例,阐述了南方民族地区生态农业县农村青年多元一体化就业的成功模式及县域... 详细信息

通过问卷调查,对生态农业县和非生态农业县农村青年的就业心理进行了比较分析,指出县域经济发展是影响农村青年就业模式的主要因素。并以广西恭城瑶族自治县为例,阐述了南方民族地区生态农业县农村青年多元一体化就业的成功模式及县域经济发展与农村青年就业的互动机制。进而提出了依托地方资源,推动县域经济健康发展,促进农村青年就业与城乡经济互动发展的思路。

关键词：县域经济南方民族地区农村青年就业模式

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Endoscope-assisted Transoral Approach for Parapharyngeal Space Tumor Resection

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Chinese Medical Journal 2017年第18期130卷 2267-2268页

作者： Jian Wang Wu-Yi Li Da-Hai Yang xiao-feng jin Yan-Yan Niu Department of Otorhinolaryngology Peking Union Medical College Hospital Beijing 100730 China

To the Editor：The parapharyngeal space is a potential neck space between prevertebral fascia and buccopharyngeal *** space tumors account for 0.5% of all head and neck neoplasms,of which 80% are benign. Surgical excision is the primary *** procedures vary depending on the tumor type,location,size,and its relationship with the neighboring nerves and ***,an external approach was often selected,mainly through the neck,parotid gland,mandible,or orbitozygomatic structure. However,following the development of endoscopic and robotic surgery,several surgeons have explored natural orifice transluminal endoscopic surgery （NOTES） to remove the parapharyngeal space tumor,which reduces complications,shortens hospital stay,and leaves no visible scar.[2,3] This study retrospectively reviewed 31 cases of a transoral approach in resecting parapharyngeal space tumors.

关键词：

复杂动态环境下船舶操纵系统避障自适应控制方法

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舰船科学技术 2021年第20期43卷 52-54页

作者：肖金峰江苏航运职业技术学院航海技术学院

为使船舶方向舵角与航向角之间物理夹角与航迹转向角数值变化趋势保持一致,实现船舶精准避障,提出复杂动态环境下的船舶操纵系统避障自适应控制方法。根据船舶避障过程,规划待通过的船体安全行进路线,完成复杂动态环境下的船舶操纵系统... 详细信息

为使船舶方向舵角与航向角之间物理夹角与航迹转向角数值变化趋势保持一致,实现船舶精准避障,提出复杂动态环境下的船舶操纵系统避障自适应控制方法。根据船舶避障过程,规划待通过的船体安全行进路线,完成复杂动态环境下的船舶操纵系统避障轨迹建模。建立船舶操纵运动方程式,根据运动坐标值的自适应转换原理,实现对船舶避障轨迹的精准控制。实验结果表明,自适应避障方法可将方向舵角和航向角的夹角与航迹转向角间的最大差值控制在10°以内,符合准确避障的船舶航行需求。

关键词：船舶操纵系统避障控制安全通过路径轨迹建模运动方程式运动坐标值

基于区块链和消费者敏感的双渠道供应链定价与渠道选择

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中国管理科学 2023年第5期31卷 29-38页

作者：梁喜肖金凤重庆交通大学经济与管理学院重庆400074

在网上直销、网上分销两种双渠道供应链系统中,引入消费者对产品检验与评估需要时间和检验结果为假概率的敏感系数、区块链单位验证费等参数,在不采用和采用区块链技术两种情况下对比分析了双渠道供应链定价和渠道选择策略。研究表明:... 详细信息

在网上直销、网上分销两种双渠道供应链系统中,引入消费者对产品检验与评估需要时间和检验结果为假概率的敏感系数、区块链单位验证费等参数,在不采用和采用区块链技术两种情况下对比分析了双渠道供应链定价和渠道选择策略。研究表明:当采用区块链技术时,直销模式下的制造商利润要高于分销模式,直销模式下的传统零售商利润要低于分销模式,直销模式下的供应链总利润高于分销模式;在直销模式下,采用区块链技术的制造商利润、传统零售商利润和供应链总利润都高于不采用区块链技术;在分销模式下,当制造商引入区块链技术一次性需支付的固定费用较小时,采用区块链技术的制造商利润、传统零售商利润、网上零售商利润和供应链总利润都要高于不采用区块链技术。

关键词：供应链区块链消费者敏感定价渠道选择

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： xiao Xiang feng Gao Yu-Gui Peng Peng Wu Zong-Lin Li Xue-feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states