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Regional Environmental Differentiation in China Sincethe Mid-Pleistocene Inferred from Lake Recordsand Its Relation with East Asian Monsoons

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Acta Geologica Sinica(English Edition) 1998年第3期72卷 314-320页

作者： Wang Sumin xue bin Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing Jiangsu 210008

Abstract: Comparative study of long lake records in different regions in China can provide some significant information about the regional differentiation of the environment and Asian monsoon activities. However, intensively studied lacustrine cores with a span of a few hundred thousand years are very rare in China. The available examples are only three long cores from the Zoigê basin in the eastern Qinghai-Tibet plateau, the Qaidam basin in the northern Qinghai-Tibet plateau and the Dianchi basin in the Yunnan plateau respectively. The results show that the regional environmental differentiation since the Mid-Pleistocene involved three stages, i.e. 780–480, 480–160, 160–0 ka B.P. In each of the three stages different regions of China had their own distinctive environmental characteristics, indicating that the uplift of the Qinghai-Tibet plateau played a major role in the environmental differentiation process.

关键词： Mid-Pleistocene regional differentiation Asian monsoon lacustrine deposits

Changes of Atmospheric Circulation since the Last Interstadial as Indicated by the Lake-status Record in China

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Acta Geologica Sinica(English Edition) 2000年第4期74卷 836-845页

作者： xue bin YU Ge Nanjing Institute of Geography and Limnology Chinese Academy of SciencesNanjing 210008

The effective precipitation and the frame of atmospheric circulation in the past three key periods, i.e. 30 ka BP, 18 ka BP and 6 ka BP, have been analyzed on the basis of the palaeolake status record produced by the Chinese Lake Status Data Base. The results show that the west-central part of China was characterized by high lake-levels at 30 ka BP, resulting from strengthened southwest monsoons; whereas the high lake stand, occurring in the west-central part of China at 18 ka BP, was caused by the southward shift and the strengthening of westerlies although the high-stand distribution was reduced. Meanwhile, the east-central part of China was under the control of strong winter monsoons at 18 ka BP. The high lake-levels, which occurred in the east-central part of China at 6 ka BP, are related to the enhanced East-Asian summer monsoons; while the lowering of the lake-level in the west-central part of China at 6 ka BP was due to the northward shift and corresponding shrink of the westerlies.A comparison between the lake status and the palaeoclimate models has shown that there do exist discrepancies between the geological evidence and the model simulations. The agreement between them provides a possible mechanical explanation on the geological phenomena, but the discrepancy shows that the model needs to be revised to a great extent.

关键词： Lake-status Data Base atmospheric circulation Last Interstadial Last Glacial Maximum Mid-Holocene

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分子动力学的不同沥青分子自愈机制分析

福州大学学报（自然科学版） 2024年第3期52卷 307-315页

作者：袁燕陈宏宇王叶飞徐松薛斌福州大学土木工程学院福建福州350108 华南理工大学土木与交通学院广东广州510641

为探究沥青材料的自愈合性能,基于分子动力学模拟,利用Materials Studio软件建立基质沥青、SBS(styrene-butadiene-styrene)改性沥青、老化沥青以及老化SBS改性沥青的三维微裂缝模型;通过密度分析、相对浓度分布以及自由体积分数等方法... 详细信息

为探究沥青材料的自愈合性能,基于分子动力学模拟,利用Materials Studio软件建立基质沥青、SBS(styrene-butadiene-styrene)改性沥青、老化沥青以及老化SBS改性沥青的三维微裂缝模型;通过密度分析、相对浓度分布以及自由体积分数等方法,分析自愈合模型的愈合情况.结果表明,SBS改性剂对沥青的自愈有一定的促进作用,老化对沥青的自愈有一定的抑制作用,4种沥青的自愈潜力从大到小依次为SBS改性沥青、基质沥青、老化后SBS改性沥青以及老化沥青.

关键词：沥青胶结料分子动力学自愈合扩散系数

暖季补饲矿物质盐砖对放牧牦牛生长性能、瘤胃发酵、血液和被毛矿物质含量的影响

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草业学报 2024年第7期33卷 105-118页

作者：杨得玉黄文植冯宇哲薛斌张晓卫崔占鸿青海大学畜牧兽医科学院农业农村部青藏高原放牧牦牛藏羊动物营养与饲草料重点实验室青海省牦牛工程技术研究中心青海省高原放牧家畜动物营养与饲料科学重点实验室青海西宁810016

为探讨放牧条件下补饲矿物质盐砖对牦牛生产力的影响,选取12头2.5岁体重接近[(139±6)kg]的健康公牦牛,随机等分为2组,每组6个重复,开展了全放牧组(CG组)和放牧+补饲矿物质盐砖组(SG组)2个控制性放牧试验,研究了暖季补饲矿物质盐砖对放... 详细信息

为探讨放牧条件下补饲矿物质盐砖对牦牛生产力的影响,选取12头2.5岁体重接近[(139±6)kg]的健康公牦牛,随机等分为2组,每组6个重复,开展了全放牧组(CG组)和放牧+补饲矿物质盐砖组(SG组)2个控制性放牧试验,研究了暖季补饲矿物质盐砖对放牧牦牛生长性能、瘤胃发酵、血液及被毛矿物质含量的影响。结果表明:CG组牦牛总增重为20.75 kg,平均日增重为244 g·d^(-1);SG组牦牛总增重为39.45 kg,平均日增重为464 g·d^(-1),较CG组提高90.12%。SG组牦牛对牧草的干物质消化率(DMD)显著高于CG组(P0.05),试验第60和90天SG组的pH显著低于CG组(P0.05),CG组Na、Co含量显著高于SG组(P0.05),SG组血清Mg、K、Fe、Cu、Zn、Mn、Co含量显著高于CG组(P0.05),CG组被毛Fe含量显著高于SG组(P0.05),SG组被毛中Mg、Fe、Cu、Zn、Mn含量显著高于CG组(P<0.05)。综上,暖季补饲矿物质盐砖能提高牦牛体增重,以及对牧草的养分消化率,促进瘤胃发酵,增加矿物质元素在血液的代谢以及被毛的沉积,改善暖季放牧牦牛矿物质营养平衡状况,挖掘牦牛的生长潜力。

关键词：矿物质盐砖暖季放牧牦牛日增重瘤胃发酵矿物质含量

维普期刊数据库博看期刊

Fusion-Riesz frame in Hilbert space

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Applied Mathematics(A Journal of Chinese Universities) 2017年第3期32卷 339-352页

作者： LI xue-bin YANG Shou-zhi Department of Mathematics Shantou University Shantou 515063 China

Fusion-Riesz frame (Riesz frame of subspace) whose all subsets are fusion frame sequences with the same bounds is a special fusion frame. It is also considered a generalization of Riesz frame since it shares some important properties of Riesz frame. In this paper, we show a part of these properties of fusion-Riesz frame and the new results about the stabilities of fusion-Riesz frames under operator perturbation (simple named operator perturbation of fusion-Riesz frames). Moreover, we also compare the operator perturbation of fusion-Riesz frame with that of fusion frame, fusion-Riesz basis (also called Riesz decomposition or Riesz fusion basis) and exact fusion frame.

关键词： fusion-Riesz frame Riesz frame of subspace Riesz frame exact fusion frame

无人机辅助智能交通系统中面向视频多播的资源优化

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测试技术学报 2024年第2期38卷 194-202页

作者：薛斌张志才付芳山西大学物理电子工程学院山西太原030006

在智能交通系统(Intelligent Transportation System,ITS)中,实时交通视频可以辅助网联车做出更理智的决策。然而,由于车载传感器位置和数量的限制,车辆无法全面掌握交通环境,不利于行车安全;此外,当多个车辆用户请求相同的视频内容时,... 详细信息

在智能交通系统(Intelligent Transportation System,ITS)中,实时交通视频可以辅助网联车做出更理智的决策。然而,由于车载传感器位置和数量的限制,车辆无法全面掌握交通环境,不利于行车安全;此外,当多个车辆用户请求相同的视频内容时,传统的单播传输模式存在效率低下的问题。为了解决这些问题,基于非正交多址接入(Non-Orthogonal Multiple Access,NOMA)和可伸缩视频编码(Scalable Video Coding,SVC)技术,提出了一种无人机(Unmanned Aerial Vehicle,UAV)辅助ITS的交通视频多播方案。通过联合优化车辆分组和功率分配策略,最大化车辆接收的长期视频质量。将该优化问题建模为一个马尔可夫决策过程(Markov Decision Process,MDP),并采用Soft Actor-Critic(SAC)算法来求解。大量仿真结果表明,该算法具有很强的探索能力,而且收益性能优于传统Actor-Critic(AC)算法。

关键词：交通视频多播可伸缩视频编码非正交多址接入 Soft Actor-Critic

Isolation and Molecular Characterization of High Molecular Weight Glutenin Subunit Genes 1Bx13 and 1By16 from Hexaploid Wheat

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Journal of Integrative Plant Biology 2008年第3期50卷 329-337页

作者： bin-Shuang Pang xue-Yong Zhang Key Laboratory of Crop Germplasm and Biotechnology Ministry of Agriculture Institute of Crop Sciences Chinese Academy of Agricultural Sciences Beijing 100081 China

The high molecular weight glutenin subunit （HMW-GS） pair 1Bx13＋1By16 are recognized to positively correlate with bread-making quality; however, their molecular data remain unknown. In order to reveal the mechanism by which 1By16 and 1Bx13 creates high quality, their open reading frames （ORFs） were amplified from common wheat Atlas66 and Jimai 20 using primers that were designed based on published sequences of HMW glutenin genes. The ORF of 1By16 was 2220bp, deduced into 738 amino acid residues with seven cysteines including 59 hexapeptides and 22 nanopeptides motifs. The ORF of 1Bx13 was 2385bp, deduced into 795 amino acid residues with four cysteines including 68 hexapeptides, 25 nanopeptides and six tripepUdes motifs. We found that 1By16 was the largest y-type HMW glutenin gene described to date in common wheat. The 1By16 had 36 amino acid residues inserted in the central repetitive domain compared with 1By15. Expression in bacteria and western-blot tests confirmed that the sequence cloned was the ORF of HMW-GS 1By16, and that 1Bx13 was one of the largest 1Bx genes that have been described so far in common wheat, exhibiting a hexapeptide （PGQGQQ） insertion in the end of central repetitive domain compared with 1Bx7. A phylogenetic tree based on the deduced full-length amino acid sequence alignment of the published HMW-GS genes showed that the 1By16 was clustered with Glu-1B-2, and that the 1Bx13 was clustered with Glu-1B-1 alleles.

关键词： bacterial expression high molecular weight glutenin subunit 1Bx13 1By16 western-blot wheat.

Chronology and Nutrients Change in Recent Sediment of Taihu Lake,Lower Changjiang River Basin,East China

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Chinese Geographical Science 2010年第3期20卷 202-208页

作者： YAO Shuchun xue bin KONG Deyang State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of Sciences Nanjing 210008 China Nanjing Institute of Environmental Seiences Ministry of Environmental Protection Nanjing 210042 China

Two short sediment cores named ZS and THS dated by the 210Pb or 137Cs method were collected from the northwest and southwest of Taihu Lake respectivly,and total organic carbon(TOC) and nutrients including total nitrogen(TN) and total phosphorus(TP) were determined to analyze the chronology and nutrients change in recent *** results show that 137Cs activities are low(less than 15 Bq/kg) in the two cores,attributed to the 137Cs *** on 210Pb constant rate of supply(CRS) model,the sedimentation accumulation rates range from 0.13 g/(cm2·yr) to 0.76 g/(cm2·yr) in the ZS core,and from 0.10 g/(cm2·yr) to 0.56 g/(cm2·yr) in the THS core.A remarkable increase in organic matter and nutrients has occurred in the two dated cores since the *** historical changes of organic matter and nutrients in the two cores are consisitent with the monitoring data for surface sediment after the *** TP accumulation rates after the early 1980s are 0.97 and 0.92 times higher than those from the 1950s to the 1980s in ZS and THS cores,*** TP concentrations in the past two-decade deposits of Taihu Lake are due to both diagenetic factors and human activities.

关键词： ^210pb ^137Cs Taihu Lake nutrient sediment

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污泥陶粒在水处理方面的应用

应用化工 2024年第5期53卷 1134-1137页

作者：崔建国乔怡娜吕学斌熊健西藏大学生态环境学院西藏拉萨850000 中北大学环境与安全工程学院山西太原030051

归纳了污泥的危害、处理处置现状以及污泥陶粒的制备工艺。系统地综述了污泥陶粒在吸附氮、磷、重金属、有机物以及除浊方面的应用和机理,为其在污水处理领域提供参考。分析了污泥陶粒在净水方面存在的局限性,并展望了其未来的发展方向。

关键词：污泥陶粒污水处理