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Capacity estimation and preliminary strategy for reducing the release of dioxins in China

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Frontiers of Environmental Science & Engineering 2007年第1期1卷 13-17页

作者： YU Gang ZHANG qing HUANG jun cai Zhenxiao SUI Qian POPs Research Center Department of Environmental Science and EngineeringTsinghua UniversityBeijing 100084China

As a party of the Stockholm Convention on Per-sistent Organic Pollutants,China must submit its national implementation plan(NIP)for this *** strategy and action plan for reducing the release of dioxins in China are the most important components of the *** prob-lems are key points for developing such strategy and action plan-what are the key sources for applying the best avail-able technology/best environmental practice(BAT/BEP)to reduce the release of dioxins?How about the capacity for reducing the dioxins release from the key sources?Where are the areas of priority for applying BAT/BEP?This paper shows the efforts towards the solution of these *** list of key sources covering about half of the total dioxins release was determined considering four *** capacity of key sources were estimated based on the difference between the emission factor corresponding to the actual situation in 2004 and that corresponding to the scenario that all key sources have been applied BAT/BEP to reduce the dioxins *** priority analysis using the geographical information system(GIS)tool has revealed that eastern provinces should be of high priority in the future reduction activities of dioxins release in China.

关键词： dioxins reduction capacity,priority

“标准地”改革背景下的地方产业空间挖掘策略研究

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城市建筑 2025年第1期22卷 70-73,84页

作者：蔡凌雁王青梁涛南京市城市规划编制研究中心

经济社会高质量发展的时代背景对产业发展提出新的诉求。土地是保障产业项目落地的基础要素,如何从土地资源中挖掘产业空间潜力,支持产业用地供应改革,是新形势下产业发展面临的直接诉求。文章提出以详细规划“地块”为单元,融合多源管... 详细信息

经济社会高质量发展的时代背景对产业发展提出新的诉求。土地是保障产业项目落地的基础要素,如何从土地资源中挖掘产业空间潜力,支持产业用地供应改革,是新形势下产业发展面临的直接诉求。文章提出以详细规划“地块”为单元,融合多源管理数据,构建产业空间分类挖潜路径,服务于产业用地“标准地”供应,为“地等项目”产业用地空间要素保障研究提供参考。

关键词：产业用地标准地土地要素空间挖掘

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Highest Weight Representations of a Family of Lie Algebras of Block Type

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Acta Mathematica Sinica,English Series 2008年第4期24卷 687-696页

作者： Xiao qing YUE Yu cai SU Department of Mathematics Shanghai Jiao Tong University Shanghai 200240 P. R. China Department of Mathematics University of Science and Technology of China Hefei 230026 P. R. China

For an additive subgroup G of a field F of characteristic zero, a Lie algebra B（G） of Block type is defined with basis {Lα,i｜ α∈G, i∈Z＋} and relations [Lα,i, Lβ,j] = （β-α）Lα＋β,i＋j＋（αj-βi）Lα＋β,Lα＋β,i＋*** is proved that an irreducible highest weight B（Z）-module is quasifinite if and only if it is a proper quotient of a Verma module. Furthermore, for a total order λ on G and any ∧∈B（G）0^＊（the dual space of B（G）0 = span{L0,i｜i∈Z＋}）, a Verma B（G）-module M（∧,λ） is defined, and the irreducibility of M（A,λ） is completely determined.

关键词： Verma modules Lie algebras of Block type irreducibility quasifinite

Hua's Theorem with s Almost Equal Prime Variables

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Acta Mathematica Sinica,English Series 2009年第7期25卷 1145-1156页

作者： qing Feng SUN Heng cai TANG Department of Mathematics Shandong University Ji'nan 250100 P. R. China

It is proved unconditionally that every sufficiently large positive integer satisfying some necessary congruence conditions can be represented as the sum of s almost equal k-th powers of prime numbers for 2 ≤ k ≤ 10... 详细信息

关键词： the additive theory of prime numbers short intervals circle method

A compact X-band backward traveling-wave accelerating structure

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Nuclear Science and Techniques 2024年第5期35卷 13-29页

作者： Xian-cai Lin Hao Zha Jia-Ru Shi Qiang Gao Fang-jun Hu qing-Zhu Li Huai-Bi Chen Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Particle and Radiation Imaging(Tsinghua University) Ministry of EducationBeijing 100084China

Very high-energy electrons(VHEEs)are potential candidates for FLASH radiotherapy for deep-seated *** proposed a compact VHEE facility based on an X-band high-gradient high-power *** this study,we investigated and realized the first X-band backward traveling-wave(BTW)accelerating structure as the buncher for a VHEE facility.A method for calculating the parameters of single cell from the field distribution was introduced to simplify the design of the BTW ***-domain circuit equations were applied to calculate the transient beam parameters of the buncher in the unsteady state.A prototype of the BTW structure with a thermionic cathode-diode electron gun was designed,fabricated,and tested at high power at the Tsinghua X-band high-power test *** structure successfully operated with 5-MW microwave pulses from the pulse compressor and outputted electron bunches with an energy of 8 MeV and a pulsed current of 108 mA.

关键词： Backward traveling-wave accelerating structure Equivalent circuit model High-power test Very high-energy electron radiotherapy

Hawking Radiation of Dirac Particles in a Variable-Mass Kerr Black Hole

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Chinese Physics Letters 2001年第4期18卷 485-487页

作者： WU Shuang-qing cai Xu Institute of Particle Physics Huazhong Normal UniversityWuhan 430079

Hawking effect of Dirac particles in a variable-mass Kerr space-time is investigated by using method of the generalized tortoise coordinate *** location and the temperature of event horizon of the non-stationary Kerr black hole are *** is shown that the temperature and the shape of event horizon depend not only on the time but also on the polar ***,our results demonstrate that the Fermi-Dirac spectrum displays a residual term which is absent from that of Bose-Einstein distribution.

关键词： horizon Dirac Kerr

Weakly Algebraic Ideal Topology of Effect Algebras

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Acta Mathematica Sinica,English Series 2015年第5期31卷 787-796页

作者： qing jun LUO Guo jun WANG School of Statistics Xi'an University of Finance and Economics School of Mathematics and Information Shaanxi Normal University

In this paper, we show that every weakly a uniform topology （weakly algebraic ideal topology, algebraic ideal of an effect algebra E induces for short） with which E is a first-countable, zero-dimensional, disconnected, locally compact and completely regular topological space, and the operation ＋ of effect algebras is continuous with respect to these topologies. In addition, we prove that the operation - of effect algebras and the operations A and V of lattice effect algebras are continuous with respect to the weakly algebraic ideal topology generated by a Riesz ideal.

关键词： Effect algebra weakly algebraic ideal uniform topology continuity

Integrability and Exact Solutions of the(2+1)-dimensional KdV Equation with Bell Polynomials Approach

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Acta Mathematicae Applicatae Sinica 2022年第4期38卷 861-881页

作者： jun-cai PU Yong CHEN School of Mathematical Sciences Shanghai Key Laboratory of Pure Mathematics and Mathematical PracticeEast China Normal UniversityShanghai 200062China College of Mathematics and Systems Science Shandong University of Science and TechnologyQingdao 266590China

In this paper,the bilinear formalism,bilinear B?cklund transformations and Lax pair of the(2+1)-dimensional KdV equation are constructed by the Bell polynomials *** N-soliton solution is derived directly from the bilinear ***,based on the two-soliton solution,the lump solution is given out analytically by taking special parameters and using Taylor expansion *** the help of the multidimensional Riemann theta function,multiperiodic(quasiperiodic)wave solutions for the(2+1)-dimensional KdV equation are obtained by employing the Hirota bilinear ***,the asymptotic properties of the one-and two-periodic wave solution,which reveal the relations with the single and two-soliton solution,are presented in detail.

关键词： the bilinear formalism bilinear B?cklund transformations Lax pair lump solution periodic wave solution the asymptotic properties

艾灸调节circ Pan3/mi R-667-5p/Ghrelin信号通路减轻膝骨关节炎大鼠的软骨病变

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中国组织工程研究 2025年第12期29卷 2475-2483页

作者：廖晴曾静陈峻袁立霞刘刚南方医科大学中医药学院广东省广州市510000 南方科技大学医院广东省深圳市518000 南方医科大学南方医院康复科广东省广州市510000

背景:既往研究表明艾灸能减轻膝骨关节炎软骨病变,延缓膝骨关节炎进展;课题组前期研究中发现调控circPan3/miR-667-5p/Ghrelin信号通路可增强软骨细胞自噬水平,从而在膝骨关节炎中发挥软骨保护作用。目的:基于circPan3/miR-667-5p/Ghre... 详细信息

背景:既往研究表明艾灸能减轻膝骨关节炎软骨病变,延缓膝骨关节炎进展;课题组前期研究中发现调控circPan3/miR-667-5p/Ghrelin信号通路可增强软骨细胞自噬水平,从而在膝骨关节炎中发挥软骨保护作用。目的:基于circPan3/miR-667-5p/Ghrelin信号通路探究艾灸对大鼠膝骨关节炎软骨的影响。方法:SD大鼠随机分为假手术组、模型组和艾灸组(n=10),对后2组大鼠行右后肢膝关节前交叉韧带横断和内侧半月板部分切除术建立膝骨关节炎大鼠模型;假手术组大鼠仅接受关节囊切开术。6周后,艾灸组大鼠每日艾灸“足三里”“肾俞”穴区20 min,持续4周,其余2组不予以特殊处理。4周后通过组织病理学染色观察膝关节滑膜病变和软骨损伤程度,通过酶联免疫吸附实验检测血清中炎症因子白细胞介素6和肿瘤坏死因子α的变化。此外,取上述3组大鼠右侧膝关节软骨细胞分为:正常对照组、模型组和艾灸组,通过Western blot和qRT-PCR检测各组细胞中软骨基质合成代谢分子(Ⅱ型胶原蛋白和Sox9)、基质降解分子(基质金属蛋白酶13和ADAMTS5)、自噬标志物(ATG5、Beclin-1、微管相关蛋白1轻链3)、Ghrelin、CircPan3以及miR-667-5P的表达水平。结果与结论:①治疗4周后,相对于假手术组,模型组大鼠滑膜显著增厚,炎症细胞浸润显著,关节间隙狭窄,软骨表面粗糙不平,变薄,软骨细胞数量减少,滑膜炎和OARSI评分显著升高,白细胞介素6和肿瘤坏死因子α水平明显上调(P<0.0001);与模型组相比,艾灸组滑膜增厚减轻,炎症细胞浸润减少,关节间隙增宽,软骨更光滑完整、变厚,软骨细胞数量增多,滑膜炎和OARSI评分降低,白细胞介素6和肿瘤坏死因子α水平显著降低(P<0.0001)。②体外实验结果表明,与正常对照组相比,模型组软骨细胞基质金属蛋白酶13、ADAMTS5和miR-667-5P表达增多,Ⅱ型胶原蛋白、Sox9、自噬标志物、Ghrelin和Circpan3表达减少(P<0.01);与模型组相比,艾灸可逆转上述指标改变(P<0.01)。③结果说明艾灸可能通过调节circPan3/miR-667-5p/Ghrelin信号通路增强软骨细胞自噬,抑制膝骨关节炎炎症和软骨破坏,对软骨发挥保护作用。

关键词：膝骨关节炎艾灸 ghrelin 软骨自噬大鼠信号通路