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天然产物研究与开发 2004年第3期16卷 228-230页

作者：王永宁卢挺石玉平青海师范大学化学系西宁810008 青海技术监督局质检所西宁810008

采用酶法技术 ,对青藏高原产油菜蜂花粉进行破壁 ,工艺简单 ,条件温和 ,易于操作 ,适合工业化生产 ,破壁率高于 90 %以上。破壁花粉有利于活性物质的释放和人体的吸收。

关键词：青藏高原油菜蜂花粉活性物质破壁工艺

改进粒子群算法的自动充电机械臂时间最优轨迹研究

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机械科学与技术 2024年第3期43卷 423-429页

作者：朱浩赵清海郑群锋宁长久青岛大学机电工程学院山东青岛266071 青岛大学电动汽车智能化动力集成技术国家地方联合工程研究中心山东青岛266071 北京理工大学机械与车辆学院北京100081

针对桁架充电机械臂关节空间轨迹规划的时间优化问题,提出了一种非线性动态学习因子的粒子群算法。通过运动学分析获取工作空间,引入3-5-3多项式插值进行轨迹规划。结合运动过程中的速度与加速度约束,寻求运动过程中的最短时间。对比改... 详细信息

针对桁架充电机械臂关节空间轨迹规划的时间优化问题,提出了一种非线性动态学习因子的粒子群算法。通过运动学分析获取工作空间,引入3-5-3多项式插值进行轨迹规划。结合运动过程中的速度与加速度约束,寻求运动过程中的最短时间。对比改进粒子群算法和基本粒子群算法的收敛速度,分析各关节优化前后运动时间的变化情况,并进行仿真实验验证。结果表明:改进粒子群算法的收敛性能较基本粒子群算法更快,整体运动时间缩短约33%,证实改进粒子群算法的可行性。

关键词：桁架充电机械臂时间优化非线性动态学习因子粒子群算法

Pollen assemblages from different agricultural units and their spatial distribution in Anyang area

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Chinese Science Bulletin 2010年第6期55卷 544-554页

作者： WANG XueLi1,2,LI YueCong1,2,XU qinghai1,2,CAO XianYong1,2,ZHANG LiYan1,2 & TIAN Fang1,2 1 College of Resource and Environmental Sciences,Hebei Normal University,Shijiazhuang 050016,china 2 Hebei Key Laboratory of Environmental Change and Ecological Construction,Shijiazhuang 050016,china College of Resource and Environmental Sciences Hebei Normal University Shijiazhuang China Hebei Key Laboratory of Environmental Change and Ecological Construction Shijiazhuang China

Pollen analysis is one of the best and possible approaches for the quantitative reconstruction of paleobotany and paleoclimate,and discrimination of human *** this paper,we reveal the characteristics of pollen assemblages in different agricultural units and their spatial distribution of major pollen taxa in the Anyang area where the human influences are serious,so as to get more information about climate change and human activities from pollen *** pollen assemblages of total 122 surface soil samples from different agricultural units (farm lands,vegetable plots,wastelands,cape-lands,woodlands,etc.) indicate that herbaceous pollen dominates the pollen assemblages with an average of 73%,mainly from Poaceae,Artemisia,Chenopodiaceae and Cruciferae;arboreal pollen percentages reach 18%,mainly from Pinus and Ulmus;shrub pollen and fern spores have very low *** general,pollen assemblages are consistent with vegetation composition,though some differences also exist in different agricultural *** farmlands and vegetable lands,Poaceae pollen has the highest percentages (averaging 27%) compared to other agricultural units with dominant corn or wheat pollen,while in wastelands and woodlands,arboreal and Artemisia pollen percentages have higher values (averaging 20% and 19% respectively).Cruciferae has the highest pollen percentages (70%) in *** pollen assemblages and PCoA can generally identify the vegetable plots,farmlands,woodlands,wastelands,and *** and Artemisia pollens mainly appear in the western part of Anyang,which is consistent with the parent plants;Poaceae pollen mainly exist in the eastern part with more farmlands;Chenopodiaceae pollen mainly appear in the urban areas and near major roads where human influences are stronger,Cruciferae pollen can mainly be found in the urban area and in the northwest part of Anyang where more vegetables are planted.

关键词：安阳地区空间分布花粉组合单位农业

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柴达木盆地锶资源技术经济评价

无机盐工业 1998年第6期30卷 16-17页

作者：冀康平青海科学技术信息研究所

通过对柴达木盆地锶资源的综合评价，提出了锶资源的开发方向。

关键词：锶技术经济经济评价柴达木盆地矿产资源

Effects of sunspot cycle length and CO_2 on air temperature along qinghai-Xizang railway and air temperature's trend prediction

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Science china Earth Sciences 2004年第z1期47卷 131-141页

作者： LI Dongliang, QUO Hui, WANG Wen & WEI LiCold & Arid Regions Environmental and Engineering research institute, Chinese Academy of Science, Lanzhou 730000, china Department of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, china Cold & Arid Regions Environmental and Engineering research institute Chinese Academy of Science Lanzhou China Department of Atmospheric Sciences Lanzhou University Lanzhou China

There are well coherences between annual averaged air temperatures at every meteorological station along the qinghai-Xizang railway, and its 10-year moving average correlation coefficient is 0.92. Thus, the regional averaged annual mean temperature series along the qinghai-Xizang railway (Trw) from 1935 to 2000 are constructed. The investigation is suggested that: Trw had significant responses to the 5-year lagged sunspot cycle length (SCL) and 15-year lagged concentration of atmospheric carbon dioxide (CO2), and the correlation coefficients between them are -0.76 (SCL) and 0.88 (CO2), respectively. The future SCL is predicted by the model of average generated function constructed with its main cycles of 76a, 93a, 108a, 205a and 275a. The result shows that the SCL would be becoming longer in the first half of the 21st century, and then it could be becoming shorter in the second half of the 21st century. Based on the natural change of SCL and the effect of double CO2 concentration, Trw in the 21st century is forecasted. It could warm up about 0.50℃ in the first half of the 21st century compared with the last decade of last century. The mean maximum air temperature could be likely about 0.20℃ in July and from 0.40℃ to 1.10℃ in January. The annual air temperature difference would likely reduce 0.3-1.00℃. The probability of above predictions ranges from 0.64 to 0.73.

关键词： qinghai-Xizang railway, annual mean air temperature, sunspot cycle length (SCL), atmospheric carbon dioxide concentration (CO2), prediction.

“双碳”战略目标下户外运动产业发展的内在逻辑、问题清单及优化策略

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辽宁体育科技 2024年第3期46卷 73-80页

作者：周雯邹青海南京体育学院研究生处江苏南京210000 威宁工贸职业学校贵州毕节553100

运用文献资料法,剖析“双碳”战略目标下户外运动产业高质量发展的内在逻辑、问题清单及优化策略。研究认为:基于“双碳”战略目标,户外运动产业高质量发展呈现生产、分配、流通、消费全链条绿色低碳发展,空间、企业、供需、价值全链路... 详细信息

运用文献资料法,剖析“双碳”战略目标下户外运动产业高质量发展的内在逻辑、问题清单及优化策略。研究认为:基于“双碳”战略目标,户外运动产业高质量发展呈现生产、分配、流通、消费全链条绿色低碳发展,空间、企业、供需、价值全链路绿色低碳发展的新内涵。以效益和质量为导向,供需两端精准对接,布局、结构、组织变革,户外用品制造业和场地绿色低碳转型发展是其内在逻辑。针对“双碳”战略目标下户外运动产业高质量发展面临的投资引导、绿色金融、财税价格政策体系不健全、绿色低碳户外运动产业多主体协同参与机制缺失、绿色低碳户外运动产品供需失配、绿色低碳户外运动技术创新与应用欠缺等问题清单。从政策驱动、技术赋能、供需协同、机制创新四方面提出健全绿色低碳户外运动产业政策保障体系,探索数智技术赋能户外运动产业绿色低碳转型,推动户外运动产业供需协同发展,构建有效市场与有为政府互促互耦的激励约束机制的优化策略。

关键词： “双碳”战略目标户外运动产业高质量发展

Seasonal variations and mechanism for environmental control of NEE of CO_2 concerning the Potentilla fruticosa in alpine shrub meadow of qinghai-Tibet Plateau

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Science china Earth Sciences 2006年第S2期49卷 174-185页

作者： LI Yingnian, SUN Xiaomin, ZHAO Xinquan, ZHAO Liang, XU Shixiao, GU Song, ZHANG Fawei & YU Guirui Northwest institute of Plateau Biology, Chinese Academy of Sciences, xining 810001, china institute of Geographic Sciences and Natural Resources research, Chinese Academy of Sciences, Beijing 100101, china Graduate University of Chinese Academy of Sciences, Beijing 100049, china

The study by the eddy covariance technique in the alpine shrub meadow of the Qing-hai-Tibet Plateau in 2003 and 2004 showed that the net ecosystem carbon dioxide exchange (NEE) exhibited noticeable diurnal and annual variations, with more distinct daily changes during the warmer seasons. The CO2 emission of the shrub ecosystem culminated in April and September while the CO2 absorption capacity reached a maximum in July and August. The absorbed carbon dioxide during the two consecutive years was 231.4 and 274.8 g CO2·m-2 respectively, yielding an average of 253.1 gCO2·m-2 per year: that accounts for a large proportion of absorbed CO2 in the region. Obviously, the diurnal carbon flux was negatively related to temperature, radiation and other atmospheric factors. Still, minute discrepancies in kurtosis and duration of carbon emission/absorption were detected between 2003 and 2004. It was found that the CO2 flux in the daytime was similarly affected by photosynthetic photon flux density in both years. Temperature appears to be the most important determinant of CO2 flux: specifically, the high temperature during the plant growing season inhibits the carbon absorption capacity. One potential explanation is that soil respiration is enhanced under such condition. Analysis of biomass revealed that the annual net carbon fixed capacity of aboveground and belowground biomass was 544.0 in 2003 and 559.4 g Cm"2 in 2004, which coincided with the NEE absorption capacity (63.1 g C·m-2 in 2003 and 74.9 g C·m-2 in 2004) in the corresponding plant growing season.

关键词： Potentilla frutlcosa shrub meadow yearly meteorological conditions CO2 exchange variations meteorological factors aboveground and belowground biomass LAI.

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人力资本创新效应的粗糙集评价

统计与决策 2018年第7期34卷 178-181页

作者：蔺琳青海大学财经学院

随着企业创新多元化发展的逐步深入,人力资本创新在企业创新探索中逐步成为推进企业占据市场竞争的关键。而目前,对于人力资本的各项投入措施所对应的人力资本创新效应尚未集中显现,且不同投入措施形成的创新效应存在差异。为此,文章利... 详细信息

随着企业创新多元化发展的逐步深入,人力资本创新在企业创新探索中逐步成为推进企业占据市场竞争的关键。而目前,对于人力资本的各项投入措施所对应的人力资本创新效应尚未集中显现,且不同投入措施形成的创新效应存在差异。为此,文章利用粗糙集在人力资本活动以及创新效益的时序叠合性上进行指标的区间离散处理,结合指标标度相对具有向量集中的层级进行结合专家赋值的评价。结果表明：创新活动相较于创新成果本身具有更为细密的指标反馈信号精度区间特征,而人力资本结构的反馈度要低于研发创新培训以及研发创新增长幅度。

关键词：人力资本创新效应粗糙集

The Cretaceous tectonic event in the Qiangtang Basin and its implications for hydrocarbon accumulation

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Petroleum Science 2010年第4期7卷 466-471页

作者： Li Yalin Wang Chengshan Li Yongtie Ma Chao Wang Licheng Peng Shaonan State Key Laboratory of Geological Processes and Mineral Resources research Center for Tibetan Plateau Geology China University of Geosciences Beijing 100083 China Petroleum Exploration and Development research institute PetroChina Beijing 100083 China

The tectonic event during Cretaceous and its relationship with hydrocarbon accumulation in the Qiangtang Basin is discussed based on zircon U-Pb dating and the study of deformation, thermochronology and hydrocarbon formation. LA-ICPMS zircon U-Pb dating indicates that the tectonic event took place during the Early-Late Cretaceous （125-75Ma）. The event not only established the framework and the styles of structural traps in the basin, but also led to the cessation of the first hydrocarbon formation and the destruction of previous oil pools. The light crude oil in the basin was formed during the second hydrocarbon formation stage in the Cenozoic, and ancient structural traps formed during the Cretaceous event are promising targets for oil and gas exploration.

关键词： qinghai-Tibet plateau Qiangtang Basin tectonic event Cretaceous hydrocarbon accumulation

Accurate Quantification of Grassland Cover Density in an Alpine Meadow Soil Based on Remote Sensing and GPS

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Pedosphere 2005年第6期15卷 778-783页

作者： LIU Yan-Sui HU Ye-Cui PENG Liu-Ying institute of Geographic Sciences and Natural Resources research Chinese Academy of Sciences Beijing 100101 （China） Graduate School of Chinese Academy of Sciences Beijing 100039 （China）

The principles of remotely estimating grassland cover density in an alpine meadow soil from space lie in the synchronous collection of in situ samples with the satellite pass and statistically linking these cover densities to their image properties according to their geographic coordinates. The principles and procedures for quantifying grassland cover density from satellite image data were presented with an example from qinghai Lake, china demonstrating how quantification could be made more accurate through the integrated use of remote sensing and global positioning systems (GPS). An empirical model was applied to an entire satellite image to convert pixel values into ground cover density. Satellite data based on 68 field samples was used to produce a map of ten cover densities. After calibration a strong linear regression relationship (r2 = 0.745) between pixel values on the satellite image and in situ measured grassland cover density was established with an 89% accuracy level. However, to minimize positional uncertainty of field samples, integrated use of hyperspatial satellite data and GPS could be utilized. This integration could reduce disparity in ground and space sampling intervals, and improve future quantification accuracy even more.

关键词： alpine meadow soil grassland cover density quantitative remote sensing qinghai Lake