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Origin of the Red Earth sequence on the northeastern Tibetan Plateau and its implications for regional aridity since the middle Miocene

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Science China Earth Sciences 2006年第5期49卷 505-517页

作者： WANG Xianyan1,7, LU Huayu1,2, JI Junfeg3, WANG Xiaoyong1,7, ZHAO Jingbo4, HUANG Baochun5.& LI Zhen6 1. SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075. China 2. Department of Urban and Resources Sciences, Nanjing University, Nanjing 210093, China 3. Department of Earth Sciences, Nanjing University, Nanjing 210093, China 4. Department of Geography, Shaanxi Normal University, Xi’an 710062, China 5. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 6 Department of Geography, Qinghai Normal University, Xining 810008, China 7. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China 1. SKLLQG Institute of Earth Environment Chinese Academy of Sciences Xi’an 710075 China 7. Graduate School of the Chinese Academy of Sciences Beijing 100039 China 2. Department of Urban and Resources Sciences Nanjing University Nanjing 210093 China 3. Department of Earth Sciences Nanjing University Nanjing 210093 China 4. Department of Geography Shaanxi Normal University Xi’an 710062 China 5. Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China 6. Department of Geography Qinghai Normal University Xining 810008 China

The Red Earth deposit around Xining, northeastern Tibetan Plateau, has beenstudied in terms of soil micro-structure, grain-size distribution, major- and trace-elementchemistry and magne-tostratigraphy. Field investigations indicate that the Red Earth sequenceconsists of 25.visually definable yellow-brown and weakly-developed soils interbedded with reddishstrongly-developed soils, and has a similar structure to the aeolian Red Clay deposit on the ChineseLoess Plateau. Grain-size analysis shows that the Red Earth deposit is very fine-grained with anegligible sand fraction ( > 63 μm). Thin-section observations under light microscopy show that thedeposit has a clayey texture and the coarse fraction ( > 10 μm) mainly consists of quartz,feldspar and micas. Pyroxene and hornblende were also observed. This mineralogical composition ofthe coarse fraction is similar to that of the Quaternary loess. In addition, all of the mineralgrains are semi angular semi-angular and are generally finer than 63 μm. There is a good agreementbetween the major and minor trace element chemistry of loess-soil units and the Red Earth *** REE distributions of the loess-soil and the Red Earth deposit are similar in shape, withenriched LREE and fairly flat HREE profiles and a clear negative Eu anomaly. The geochemicalcharacteristics of the Red Earth deposit are also identical to those of upper continental crust,thus indicating a wind-blown origin. Magnetostratigraphic investigation shows that onset of the RedEarth deposition predates 11.4 Ma BP (13.6 Ma at a nearby site). The distribution of the reportedMiocene aeolian loess at Qin''an of the Loess Plateau is still unknown. Our results indicate thatthis aeolian deposit had extended to the northeastern Tibetan Plateau by at least the middleMiocene. The similarity of the element geochemistry between the Red Earth deposit and the overlyingloess shows that they may have similar sources and dynamic transport system, and may indicate thatthe

关键词： Red Earth deposit, Northeastern Tibetan Plateau, aeolian deposit, aridity of Asia, the middle Miocene.

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北京市发展和改革委员会北京市农业农村局北京市财政局北京市人力资源和社会保障局北京市住房和城乡建设委员会北京市交通委员会北京市水务局北京市文化和旅游局北京市卫生健康委员会北京市园林绿化局北京市体育局关于印发因地制宜开展以工代赈工作促进农民(京发改〔2023〕1336号)

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北京市人民政府公报 2024年第13期 23-29页

作者： 1.北京市发展和改革委员会 2.北京市农业农村局 3.北京市财政局 4.北京市人力资源和社会保障局 5.北京市住房和城乡建设委员会 6.北京市交通委员会 7.北京市水务局 8.北京市文化和旅游局 9.北京市卫生健康委员会 10.北京市园林绿化局 11.北京市体育局北京市发展和改革委员会北京市农业农村局北京市财政局北京市人力资源和社会保障局北京市住房和城乡建设委员会北京市交通委员会北京市水务局北京市文化和旅游局北京市卫生健康委员会北京市园林绿化局北京市体育局

各区人民政府,北京经济技术开发区管委会,市各有关部门:经市政府审定同意,现将《关于因地制宜开展以工代赈工作促进农民群众就业增收的实施意见》印发给你们,请结合实际,认真贯彻落实。特此通知。2023年10月17日关于因地制宜开展以工代... 详细信息

各区人民政府,北京经济技术开发区管委会,市各有关部门:经市政府审定同意,现将《关于因地制宜开展以工代赈工作促进农民群众就业增收的实施意见》印发给你们,请结合实际,认真贯彻落实。特此通知。2023年10月17日关于因地制宜开展以工代赈工作促进农民群众就业增收的实施意见按照国家开展以工代赈工作要求,落实《关于促进本市农民增收若干措施》,新时期实施以工代赈,旨在提升农民劳动技能,巩固农民持续稳定增收成效和集体经济薄弱村“消薄”成果,助力中低收入群体劳动增收致富。北京作为超大城市,虽然经济社会发展水平较高,但仍然存在城乡收入差距较大,农民劳动能力和技能水平偏低,内生动力不足等问题,为进一步推动各区、各部门主动谋划,积极用好有利因素,因地制宜开展以工代赈工作,发展壮大集体经济,促进农民就业增收,特制定本实施意见。

关键词：北京市财政局农民就业增收中低收入群体内生动力增收致富园林绿化局北京经济技术开发区超大城市

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Carbon isotope ratios of C_(4) plants in loess areas of North China

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Science China Earth Sciences 2006年第1期49卷 97-102页

作者： WANG Guoan1,2,3, HAN Jiamao 2, ZHOU Liping3, XIONG Xiaogang4, TAN Ming2, WU Zhenhai5.& PENG Jun6 1. Department of Plant Nutrition, China Agricultural University, Beijing 100094, China 2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 3. College of Environmental Sciences, MOE Laboratory for Earth Surface Processes, Peking University, Beijing 100871, China 4. Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China 5. Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China 6. Network Center, China Agricultural University, Beijing 100094, China 1. Department of Plant Nutrition China Agricultural University Beijing 100094 China 2. Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China 3. College of Environmental Sciences MOE Laboratory for Earth Surface Processes Peking University Beijing 100871 China 4. Institute of Botany Chinese Academy of Sciences Beijing 100093 China 5. Northwest Sci-Tech University of Agriculture and Forestry Yangling 712100 China 6. Network Center China Agricultural University Beijing 100094 China

Carbon isotope ratios (δ^(13)C) of 89 C_4 plant samples were determined fromthe loess area in North China. δ^(13)C values vary between -10.5.er thousand and -14.6per thousandwith a mean of -12.6per thousand. Along a precipitation gradient from the semi-moist area to thesemiarid area, then to the arid area, the δ^(13)C values of C_4 plants show a slight decreasingtrend. The δ^(13)C values of C_4 plants in the dry season are found lower than those in the wetseason. These trends are opposite to those observed for C_3 species.

关键词： C4 plants, carbon isotope ratios, loess area.

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Reconstruction of the most recent common ancestor sequences of SARS-Cov S gene and detection of adaptive evolution in the spike protein

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Chinese Science Bulletin 2004年第12期49卷 1311-1313页

作者： ZHANG Yuan1, ZHENG Nan2,3, HAO Pei4,5.& ZHONG Yang6 1. Laboratory of Systematic and Evolutionary Botany, Institute of Bot- any, Chinese Academy of Sciences, Beijing 100093, China 2. College of Life Sciences, Beijing Normal University, Beijing 100875. China 3. Institute of Viral Disease Control and Prevention, Chinese CDC, Beijing 10005., China 4. Bioinformation Center, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China 5. Shanghai Center for Bioinformation Technology, Shanghai 200235. China 6. School of Life Sciences, Fudan University, Shanghai 200433, China 1. Laboratory of Systematic and Evolutionary Botany Institute of Botany Chinese Academy of Sciences 100093 Beijing China 2. College of Life Sciences Beijing Normal University 100875 Beijing China 3. Institute of Viral Disease Control and Prevention Chinese CDC 100052 Beijing China 4. Bioinformation Center Shanghai Institutes for Biological Sciences Chinese Academy of Sciences 200031 Shanghai China 5. Shanghai Center for Bioinformation Technology 200235 Shanghai China 6. School of Life Sciences Fudan University 200433 Shanghai China

The genome oiganization and expression strategy of severe acute respiratory syndrome coronavirus (SARS-CoV) have been described extensively. As a structural glycoprotein on the virion surface, the spike protein is responsible for binding to host cellular receptors and for the fusion between the viral envelope and the cellular membrane. It also induces neutralizing antibodies in the host and mediates cellular immunity. Previous studies suggested that amino acid replacements in the spike protein coulddramatically alter the pathogenesis and virulence of some coronaviruses. It is therefore reasonable to test the hypothesis that radical amino acid replacements in the spike protein, favored by environmental selective pressure during the process of SARS-CoV interspecific transmission, might make this pathogen adapt to a new host, In this study, we investigated a total of 108 complete sequences of the SARS-CoV S gene from Gen-Bank (until March 23, 2004). After omission of those records containing frame-shift mutations or low quality sequences, e.g. ZJ01, and selection of one sequence for identical records, an alignment of 42 sequences was obtained using the program Clustal-X. Then, we reconstructed the most recent common ancestor (MRCA) sequences of theSARS-CoV S gene and detected the adaptive evolution in the spike protein.

关键词： SARS冠状病毒自适应进化基因表达糖蛋白分子免疫学波峰病毒

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北京市发展和改革委员会北京市规划和自然资源委员会北京市城市管理委员会北京市住房和城乡建设委员会北京市水务局北京市科学技术委员会、中关村科技园区管理委员会北京市经济和信息化局北京市生态环境局北京市农业农村局北京市统计局关于印发全面推进新能源(京发改〔2023〕1309号)

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北京市人民政府公报 2024年第13期 6-22页

作者： 1.北京市发展和改革委员会 2.北京市规划和自然资源委员会 3.北京市城市管理委员会 4.北京市住房和城乡建设委员会 5.北京市水务局 6.北京市科学技术委员会、中关村科技园区管理委员会 7.北京市经济和信息化局 8.北京市生态环境局 9.北京市农业农村局 10.北京市统计局北京市发展和改革委员会北京市规划和自然资源委员会北京市城市管理委员会北京市住房和城乡建设委员会北京市水务局北京市科学技术委员会、中关村科技园区管理委员会北京市经济和信息化局北京市生态环境局北京市农业农村局北京市统计局

各有关单位:为贯彻党中央、国务院关于碳达峰、碳中和的重大战略部署,落实国家发展改革委等八部门《关于促进地热能开发利用的若干意见》(国能发新能规〔2021〕 43号)和市政府《北京市碳达峰实施方案》(京政发〔2022〕31号)要求,加快能... 详细信息

各有关单位:为贯彻党中央、国务院关于碳达峰、碳中和的重大战略部署,落实国家发展改革委等八部门《关于促进地热能开发利用的若干意见》(国能发新能规〔2021〕 43号)和市政府《北京市碳达峰实施方案》(京政发〔2022〕31号)要求,加快能源绿色低碳转型,进一步控制化石能源消费,提高新能源供热利用比重,全面推动本市新能源供热高质量发展,经市政府同意,现将《关于全面推进新能源供热高质量发展的实施意见》印发给你们,请认真贯彻落实。特此通知。

关键词：国家发展改革委科学技术委员会中关村科技园区新能源北京市水务局特此通知北京市农业碳中和

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Eye model for observing the images constructed by IOLs

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中华眼视光学与视觉科学杂志 2000年第1期 32-34页

作者： Kazuhiko Ohnuma 1, Yasuhiko Shiokawa 2, Norio Hirayama 3, Qi Hua 4,Yasufumi Emori 5. (1.Graduate School of Science and Technology, Chiba University, 2.Faculty of Engineering, Chiba University, 3.HOYA Healthcare Corporation, 4.HOYA Corporation, 5.

Objective:Ophthalmologists, patients, and its family can select intraocular lenses, if they can observe the images constructed by intraocular lenses (IOL) before operation. Methods: According to this request, the eye model that consists of a photographic lens with 35.m focal length, an IOL put in a water cell and a charge coupled device (CCD) camera is constructed. The images constructed by the lenses are observed on a monitor of personal computer and the contrast of the images are analyzed by using a commercial image processing software. Results: The MTF of the eye model is analyzed and it is found that the MTF resembles the total MTF of human eyes including the response of retina to brain. And also, we are able to observe the images constructed by changing the diameter of a pupil and by putting glasses in front of the camera lens. The observed images and analyzed results using some intraocular lenses, a resolution chart and a contrast chart are shown here. Conclusion: The proposed eye model is useful for many cases especially for the informed consent. [FK(WB80011。5.

关键词： intraocular lens (IOL)surgery modulation Transfer Function (MTF) contrast sensitivity(CS) resolving power(RP)

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Nd isotope as the tracer of seawater evolution of early Miocene in the eastern Pacific Ocean

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Chinese Science Bulletin 2003年第B06期48卷 106-110页

作者： LIU Jihua~(1,2,3), CHEN Lirong~1, WANG Yingxi~4 & HAN Jianxiu~5.1. Institute of Oceanology, Chinese Acadcmy of ences, Qingdao 266071. China 2. Key Lab of Marine Sedimentology and Environmental Geology, First Institute of Oceanograpgy, State Oceanic Administration, Qingdao 266061. China 3. Graduate School, Chinese Academy of Sciences, Beijing 100039. China 4. Modern Analysis Center, Nanjing University. Nanjing 210093. China 5. Guangzhou Marine Investigation Bureau, Guangzhou 5.0760. China 1. Institute of Oceanology Chinese Academy of Sciences 266071 Qingdao China 2. Key Lab of Marine Sedimentology and Environmental Geology First Institute of Oceanograpgy State Oceanic Administration 266061 Qingdao China 3. Graduate School Chinese Academy of Sciences 100039 Beijing China 4. Modern Analysis Center Nanjing University 210093 Nanjing China 5. Guangzhou Marine Investigation Bureau 510760 Guangzhou China

Fifty-six samples of nannofossil ooze were collected from Core PC5.94 in the northern equatorial Pacific at 5.cm intervals. With the methods of mass spectrometer (VG35.) and ICP, the Nd isotopic compositions (εNd(t)), Mn contents and Mg/Sr ratios of carbonate phase have been analyzed. CaCO3 contents of bulk sediments were obtained by dissolution of 0.5.mol/L HCl. Based on these data, the high-resolution εNd(t) profile of seawater in early Miocene with core depth(or time) have been established. The values of εNd(t) range from -6.2 to -2.97 and 4 fluctuation cycles existed during 24.06-22.02 Ma. 4 low εNd(t) values (about -6.4) correspond to high CaCO3 contents, which implicates that there were 4 cold epochs or 4 times of Antarctic Bottom Water activity. They occurred at the time of 24.06 Ma, 23.85.Ma,22.88 Ma and 22.26 Ma, respectively. High εNd(t) values correspond to the high Mn contents and high values of Mg/Sr ratio, which indicates the existence of 4 intense hydrothermal activity periods during 24.06-22 Ma, the durations of them are 4.05.23.98 Ma, 23.69-23.15.Ma, 22.74-22.37 Ma and 22.06-22.02 Ma, respectively.

关键词：同位素钕示踪原子海水演化中新世太平洋微化石分光计持续期海水样品

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Modelling of the Relaxation Least Squares-Based Neural Networks and Its Application

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Journal of Systems Engineering and Electronics 2002年第2期13卷 16-21页

作者： Lu Kongkuo, Chen Zengqiang & Yuan ZhuzhiDepartment of Automation, Nankai University, Tianjin 300071, P.R.China(Received July 5. 2001) Department of Automation Nankai University Tianjin 300071 P.R. China

A relaxation least squares-based learning algorithm for neual networks is proposed. Not only does it have a fast convergence rate, but it involves less computation quantity. Therefore, it is suitable to deal with the case when a network has a large scale but the number of training data is very limited. It has been used in converting furnace process modelling, and impressive result has been obtained.

关键词： Backpropagation Learning systems Least squares approximations

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北京市发展和改革委员会北京市经济和信息化局北京市规划和自然资源委员会北京市住房和城乡建设委员会北京市城市管理委员会北京市交通委员会北京市水务局北京市农业农村局北京市商务局北京市广播电视局北京市园林绿化局关于印发北京市工程建设项目招标投标

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北京市人民政府公报 2024年第17期 6-20页

作者： 1.北京市发展和改革委员会 2.北京市经济和信息化局 3.北京市规划和自然资源委员会 4.北京市住房和城乡建设委员会 5.北京市城市管理委员会 6.北京市交通委员会 7.北京市水务局 8.北京市农业农村局 9.北京市商务局 10.北京市广播电视局 11.北京市园林绿化局北京市发展和改革委员会北京市经济和信息化局北京市规划和自然资源委员会北京市住房和城乡建设委员会北京市城市管理委员会北京市交通委员会北京市水务局北京市农业农村局北京市商务局北京市广播电视局北京市园林绿化局

京发改规〔2023〕14号各有关单位:为贯彻落实《北京市全面优化营商环境助力企业高质量发展实施方案》(京政办发〔2023〕8号)文件精神,进一步优化招标投标领域营商环境,规范工程建设项目招标投标各参与方行为,根据《中华人民共和国招标...

京发改规〔2023〕14号各有关单位:为贯彻落实《北京市全面优化营商环境助力企业高质量发展实施方案》(京政办发〔2023〕8号)文件精神,进一步优化招标投标领域营商环境,规范工程建设项目招标投标各参与方行为,根据《中华人民共和国招标投标法》《中华人民共和国招标投标法实施条例》等招标投标领域有关法律法规,结合我市实际,制定了《北京市工程建设项目招标投标负面行为清单》,现印发给你们,请遵照执行。

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Spatio-temporal model for soil characteristic of reclamation land

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中国有色金属学会会刊：英文版 2005年第S1期15卷 45-48页

作者： CHEN Qiu-ji~(1, 2), HU Zhen-qi~1, FU Mei-chen~3, XIE Hong-quan~4, HAO Hai-fu~5.(1. China University of Mining and Technology(Beijing Campus), Beijing 1.0083, China 2. Henan Polytechnic University, Jiaozuo 45.000, China 3. China University of Geosciences, Beijing 1.0083, China 4. Hebei Polytechnic University, Tangshan 063009, China 5. China Railway Shiqiju Group Corporation, Taiyuan 030600, China) China Univ Min & Technol Beijing 100083 Peoples R China Henen Polytech Univ Jiaozuo 45400 Peoples R China China Univ Geosci Beijing 100083 Peoples R China Hebei Polytech Univ Tangshan 063009 Peoples R China China Railway Shiqiju Grp Corp Taiyuan 030600 Peoples R China

The development of spatio-temporal data model is introduced. According to the soil characteristic of reclamation land, we adopt the base state with amendments model of multi-layer raster to organize the spatio-temporal data, using the combined data structure on linear quadtree and linear octree to code. The advantage of this model is that it can easily obtain the information of certain layer and integratedly analyze the data with other methods. Then, the methods of obtain and analyses are introduced. The method can provide a tool for the research of the soil characteristic change and spatial distribution in reclamation land.

关键词： reclamation soil spatio-temporal data model linear quad-tree linear octree

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