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Journal of Earth Science 2014年第3期25卷 575-586页

作者： qichen hao Jingli Shao Yali Cui Zhenhua Xie School of Water Resources and Environment China University of Geosciences Beijing Institute of Hydrogeology and Engineering Geology

A groundwater transient flow model was developed to evaluate the applicability and effectiveness of artificial recharge scenarios in the middle-upper part of the Yongding River alluvial fan in Beijing. These scenarios were designed by taking into account different types of recharge facilities and their infiltration rate with the Middle Route Project for South-to-North Water Transfer（MRP） as the recharge water source. The simulation results suggest that：（1） the maximum amount of artificial recharge water, for scenario I, would be 127.42×106 m3 with surface infiltration facilities; and would be243.48×106 m3 for scenario II with surface infiltration and recharge wells under the constraint of the upper limit of groundwater;（2） with preferred pattern of recharge facilities, groundwater levels in both optimized recharge scenarios would not exceed the upper limit within the given recharge period; and（3implementation of the recharge scenarios would efficiently increase the aquifer replenishment and the groundwater budget will change from-54.11×106 to 70.89×104 and 183.36×104 m3, respectively. In addition, under these two scenarios groundwater level would rise up to 30 and 34 m, respectively, without increasing the amount of evaporation. The simulation results indicate that the proposed recharge scenarios are practically feasible, and artificial recharge can also contribute to an efficient recovery of groundwater storage in Beijing.

关键词： groundwater modeling artificial recharge infiltration rate groundwater management.

Study on the Estimation of Groundwater Withdrawals Based on Groundwater Flow Modeling and Its Application in the North China Plain

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Journal of Earth Science 2014年第6期25卷 1033-1042页

作者： Jingli Shao Yali Cui qichen hao Zhong Han Tangpei Cheng School of Water Resources and Environment China University of Geosciences Institute of Applied Physics and Computational Mathematics CAEP Software Center for High Performance Numerical Simulation

The amount of water withdrawn by wells is one of the quantitative variables that can be applied to estimate groundwater resources and further evaluate the human influence on groundwater systems. The accuracy for the calculation of the amount of water withdrawal significantly influences the regional groundwater resource evaluation and management. However, the decentralized groundwater pumping, inefficient management, measurement errors and uncertainties have resulted in considerable errors in the groundwater withdrawal estimation. In this study, to improve the estimation of the groundwater withdrawal, an innovative approach was proposed using an inversion method based on a regional groundwater flow numerical model, and this method was then applied in the North China Plain. The principle of the method was matching the simulated water levels with the observation ones by adjusting the amount of groundwater withdrawal. In addition, uncertainty analysis of hydraulic conductivity and specific yield for the estimation of the groundwater withdrawal was conducted. By using the proposed inversion method, the estimated annual average groundwater withdrawal was approximately 24.92×10^9 m^3 in the North China Plain from 2002 to 2008. The inversion method also significantly improved the simulation results for both hydrograph and the flow field. Results of the uncertainty analysis showed that the hydraulic conductivity was more sensitive to the inversion results than the specific yield.

关键词： inversion method North China Plain groundwater withdrawal numerical modeling

4-Nitrocatechol as a novel matrix for low-molecular-weight compounds in situ detection and imaging in biological tissues by MALDI-MSI

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Chinese Chemical Letters 2024年第6期35卷 486-490页

作者： Hualei Xu Manman Han Haiqiang Liu Liang Qin Lulu Chen hao Hu Ran Wu Chenyu Yang Hua Guo Jinrong Li Jinxiang Fu qichen hao Yijun Zhou Jinchao Feng Xiaodong Wang Key Laboratory of Mass Spectrometry Imaging and Metabolomics(Minzu University of China) State Ethnic Affairs CommissionBeijing 100081China College of Life and Environmental Sciences Centre for Imaging&Systems BiologyMinzu University of ChinaBeijing 100081China

Low-molecular-weight(LMW)compounds are ubiquitous in living organisms and play essential roles in biological *** direct analysis of LMW compounds in biological tissues by matrix-assisted laser desorption/ionization mass spectrometry imaging(MALDI-MSI)could provide a more comprehensive understanding of their essential ***,we evaluated 4-nitrocatechol(4-NC)as a novel positive-ion matrix for enhancing in situ detection and imaging of LMW compounds from the rat liver,brain,and germinating Chinese-yew seed by *** results showed that the 4-NC possessed remarkable features,including strong ultraviolet absorption,uniform matrix crystal,excellent chemical stability,and fewer matrix-related background *** use of 4-NC led to the successful detection of 232,218,and193 LMW compounds from the three abovementioned tissue sections,***,the use of 4-NC improved the imaging quality of LMW compounds in tissue sections through MALDI-MSI and has the potential as a matrix for MALDI tissue imaging of LMW compounds.

关键词： MALDI-MSI 4-Nitrocatechol LMW compounds In situ detection Tissue imaging

4-Aminoazobenzene:A novel negative ion matrix for enhanced MALDI tissue imaging of metabolites

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Chinese Chemical Letters 2024年第11期35卷 273-277页

作者： Ran Wu Dongxu Jiang hao Hu Chenyu Yang Liang Qin Lulu Chen Zehui Hu Hualei Xu Jinrong Li Haiqiang Liu Hua Guo Jinxiang Fu qichen hao Yijun Zhou Jinchao Feng Qiang Wang Xiaodong Wang Key Laboratory of Mass Spectrometry Imaging and Metabolomics(Minzu University of China) State Ethnic Affairs CommissionBeijing 100081China College of Life and Environmental Sciences Centre for Imaging&Systems BiologyMinzu University of ChinaBeijing 100081China College of Biological Sciences and Biotechnology Beijing Forestry UniversityBeijing 100083China Department of Orthopaedic Surgery Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310016China Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province Hangzhou 310016China

Endogenous metabolites play key functions in many important physiological and biochemical *** comprehensive in situ detection and direct imaging of metabolites in bio-tissues by matrix-assisted laser desorption/ionization mass spectrometry imaging(MALDI-MSI)is very important for understanding complex and diverse biological processes and has become an essential aspect of spatial *** this work,4-aminoazobenzene(AAB)was successfully screened and optimized as a new negative ion(-)MALDI matrix to enhance the in situ detection and imaging of metabolites in tissues using ***,AAB exhibited superior properties in terms of ultraviolet absorption,background ion interference,matrix morphology,and metabolite ionization *** was used for in situ detection and imaging of metabolites in rat brain and germinating Chinese yew seed tissue sections,where 264and 339 metabolite ion signals were successfully detected and imaged using(-)MALDI-MS,*** addition,high-resolution imaging of mouse eyeball section using MALDI-tims TOF MSI with spatial resolution of up to 10μm was successfully carried out,showing that AAB is an efficient(-)MALDI matrix for capturing high-resolution images of metabolites in biological tissue sections.

关键词： MALDI-MSI 4-Aminoazobenzene Metabolites In situ detection Tissue imaging

发展完善直接融资体系破解创新型中小企业融资难题

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政治经济学评论 2023年第1期14卷 100-116页

作者：贾利军郝启晨北京理工大学人文与社会科学学院

创新型中小企业融资难题严峻复杂又亟待破解,需要有新的思路。本文综合运用马克思资本构成理论深入研究了创新型中小企业的资本构成及其变化趋势,发现创新型中小企业特殊的资本构成及其变化特点,导致其在间接融资中存在技术掣肘、动态... 详细信息

创新型中小企业融资难题严峻复杂又亟待破解,需要有新的思路。本文综合运用马克思资本构成理论深入研究了创新型中小企业的资本构成及其变化趋势,发现创新型中小企业特殊的资本构成及其变化特点,导致其在间接融资中存在技术掣肘、动态不可持续性等不利约束,使得其与间接融资产生内在冲突;在直接融资中存在可持续性激励、可得性好、主体偏好匹配等优势因素,使得其与直接融资形成逻辑契合。因此,破解创新型中小企业融资难题,根在在于加强间接融资渠道建设的同时,促进创新型中小企业走“专精特新”之路和大力发展完善直接融资体系。

关键词：创新型中小企业融资难题资本构成直接融资

维普期刊数据库人大复印报刊资料人大复印报刊资料

新质生产力的生成逻辑:历史回溯、现实审视与政策实践

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教学与研究 2024年第5期 45-58页

作者：贾利军郝启晨北京理工大学经济学院北京102401

生产力发展事关国家战略全局,加快发展新质生产力是立足当代中国实际、实现高质量发展的必然要求。人类社会发展史上的重大生产力变革均以技术革命突破为基本前提、以生产力要素创新性配置为主要动力、以产业变迁为现实着力点,这体现为... 详细信息

生产力发展事关国家战略全局,加快发展新质生产力是立足当代中国实际、实现高质量发展的必然要求。人类社会发展史上的重大生产力变革均以技术革命突破为基本前提、以生产力要素创新性配置为主要动力、以产业变迁为现实着力点,这体现为生产力发展的一般性规律。新质生产力是当前历史阶段生产力的新质态,其发展既符合一般性规律,也体现数字化时代的新特征。以数字技术为代表的技术革命性突破、以数据要素为纽带的生产力要素创新性配置、与数字经济相适应的产业深度转型升级这三重机制共同催生和推动了新质生产力的形成和发展。加快发展新质生产力要求我们破除三重机制发挥作用的现实阻碍,加快实现高水平的科技自立自强,强化科技创新对于生产力要素系统革新的引领作用;加快推进数据要素的生产、确权、流通,充分发挥数据要素在资源调配和整合方面的独特优势;加快构建现代化产业体系,推动传统产业深度转型升级以及战略性新兴产业加速发展等前瞻性战略布局。

关键词：新质生产力生成逻辑一般规律三重机制政策实践

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基于马克思地租理论的数据生产要素研究

经济纵横 2023年第8期 1-11,F0002页

作者：贾利军郝启晨北京理工大学人文与社会科学学院北京100081

基于要素参与收入分配性质上的差异,可将数据区分为原始数据和价值数据。由于原始数据不具有价值属性,决定了其参与收入分配的主要方式是获取数据地租,分别表现为数据级差地租Ⅰ和Ⅱ、数据绝对地租Ⅰ和Ⅱ。原始数据积累与资本积累的内... 详细信息

基于要素参与收入分配性质上的差异,可将数据区分为原始数据和价值数据。由于原始数据不具有价值属性,决定了其参与收入分配的主要方式是获取数据地租,分别表现为数据级差地租Ⅰ和Ⅱ、数据绝对地租Ⅰ和Ⅱ。原始数据积累与资本积累的内在逻辑是:原始数据积累导致数据地租的不断增长,其所有权和使用权直接合一,通过数据地租资本化产生促进资本积累的内在机制,进而形成原始数据积累与资本积累相互增强的正反馈机制。虽然原始数据所有权和使用权的直接合一掩盖了二者本质上的分离,但理论上可以明确数据地租的价格和数据耕地的价格。研究结论可为数据确权、数据交易、相关数据法规制定提供理论支持。

关键词：原始数据价值数据数据积累数据地租数据耕地价格决定

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马克思生产劳动理论及其当代启示

理论视野 2024年第8期294卷 12-17页

作者：郝启晨张福军北京理工大学经济学院中国社会科学院马克思主义研究院

通过对马克思生产劳动理论的再探析,可知资本主义生产劳动内含的三重规定性,得到数字劳动生产性问题的基本判据,揭示劳动时间转换的内在规律及其在不同社会制度下的现实表现。建议加强我国生产性数字劳动的基础地位,引导劳动时间转换的... 详细信息

通过对马克思生产劳动理论的再探析,可知资本主义生产劳动内含的三重规定性,得到数字劳动生产性问题的基本判据,揭示劳动时间转换的内在规律及其在不同社会制度下的现实表现。建议加强我国生产性数字劳动的基础地位,引导劳动时间转换的正确方向,动态优化劳动时间的合理配置。

关键词：马克思生产劳动理论三重规定性劳动时间转换规律数字劳动

诺木洪冲洪积扇地下水氢氧同位素特征及更新能力研究

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水文地质工程地质 2015年第6期42卷 1-7页

作者：崔亚莉刘峰郝奇琛张戈中国地质大学(北京)水资源与环境学院北京100083 中国地质科学院水文地质环境地质研究所河北石家庄050061 中国地质调查局西安地质调查中心陕西西安710001

诺木洪地区是柴达木盆地中发育较为典型的冲洪积扇,研究其地下水同位素特征及更新能力对于整个盆地地下水资源研究具有重要意义。分析了诺木洪地区地下水中的2H、3H、18O同位素特征,利用3H数据建立相应的数学物理模型,计算出冲洪积扇不... 详细信息

诺木洪地区是柴达木盆地中发育较为典型的冲洪积扇,研究其地下水同位素特征及更新能力对于整个盆地地下水资源研究具有重要意义。分析了诺木洪地区地下水中的2H、3H、18O同位素特征,利用3H数据建立相应的数学物理模型,计算出冲洪积扇不同位置地下水的更新速率,并以此为依据定性划分了当地的地下水流动系统。山区至冲洪积扇中部地下水更新速率达5%/a^10%/a,更新能力较强。冲洪积扇前缘地下水更新速率为0.08%/a^1.4%/a,而在溢出带以下至盆地中心地下水更新速率小于0.07%/a,更新能力极弱。

关键词：诺木洪冲洪积扇地下水同位素更新速率

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盆地地下水密度变化对水流驱动力的影响

济南大学学报（自然科学版） 2020年第6期34卷 595-602页

作者：郝奇琛崔伟哲黄林显中国地质科学院水文地质环境地质研究所河北石家庄050061 河北地质大学水资源与环境学院河北石家庄050031 济南大学水利与环境学院山东济南250022

为了揭示内陆干旱盆地地下水密度变化对区域水流系统的影响机制,基于理想剖面变密度流数值模型,采用平均等价淡水水头差定量表征方法,分析地下水密度增加对区域水流系统的影响。结果表明,受蒸发浓缩作用控制,盆地中部地下水密度逐渐增大... 详细信息

为了揭示内陆干旱盆地地下水密度变化对区域水流系统的影响机制,基于理想剖面变密度流数值模型,采用平均等价淡水水头差定量表征方法,分析地下水密度增加对区域水流系统的影响。结果表明,受蒸发浓缩作用控制,盆地中部地下水密度逐渐增大;地下水密度增大造成排泄区等价淡水水头差增大,进而削弱补给区到排泄区的水流驱动力,当模型运行100 ka时,地下水密度增大对下层区域水流系统驱动力的削弱程度达47.86%,造成排泄区地下水径流路径发生明显变化;盆地中部地下水密度变化导致的等价淡水水头增大是造成水流驱动力减小的根本原因,是区域地下水流系统研究中不可忽略的因素之一。

关键词：地下水流系统水流驱动力变密度流数值模拟