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Enhanced simultaneous absorption of NO_(x) and SO_(2) in oxidation-reduction-absorption process with a compounded system based on Na_(2)SO_(3)

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Journal of Environmental Sciences 2022年第1期34卷 1-10页

作者： Sichao Li Wenjun Huang Haomiao Xu Kai Liu Jia-nan Wang Yaning Sun Zan qu Naiqiang Yan School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Jinan Motor Vehicle Pollution Prevention and Control Center(Jinan Ecological Environment Information Center) Jinan 250000China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Oxidation of sulfite and competitive absorption existed in Na_(2)SO_(3) solution for simultaneous removal of NO_(x) and SO_(2),inhibited the long-term high-efficiency when used for practical applications.A matching strategy was developed to solve these *** combination was used to retard the oxidation of antioxidant and enhance inhibition of S(IV)(tetravalent sulfur)***(HQ)and sodium thiosulfate(ST)showed a positive synergistic effect on inhibition of S(IV)*** SO_(2) concentration was 500 and 2000 ppmV,the addition of 0.1 wt.%HQ and 1 wt.%ST decreased the percentage of S(IV)oxidized by oxygen by over 30%and 40%,***(Na_(2)CO_(3))alleviated the competitive absorption between NO_(x) and SO_(2).Moreover,Na_(2)CO_(3) exhibited an enhancement effect on the absorption of NO_(x) and SO_(2) when coupled with *** the increase of oxygen pressure accelerated the oxidation of S(IV),the anti-oxidants can retard the *** measurement of pH suggested the removal efficiency of NO_(x) highly depended on SO_(3)^(2-) concentration rather than *** further investigation of the mechanism suggested the match effect was related to the interaction between ST and the intermediate product of *** match strategy holds a potential for application of SO_(3)^(2-) to denitration.

关键词： Denitration Non-ferrous metal smelting flue gas Oxidation inhibition Oxidation-reduction-absorption Synergistic effect

Identifying the dominant transport mechanism in single nanoscale pores and 3D nanoporous media

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Fundamental Research 2023年第3期3卷 409-421页

作者： Ying Yin Zhiguo qu Masa Prodanovic Christopher J.Landry MOE Key Laboratory of Thermo-Fluid Science and Engineering School of Energy and Power EngineeringXi’an Jiaotong UniversityXi’an 710049China Hildebrand Department of Petroleum and Geosystems Engineering The University of Texas at AustinAustinTX 78712USA

Gas transport mechanisms can be categorized into viscous flow and mass diffusion,both of which may coexist in a porous media with multiscale pore *** determine the dominant transport mechanism and its contribution to gas transport capacity,the gas viscous flow and mass diffusion processes are analyzed in single nanoscale pores via a theoretical method,and are simulated in 3D nanoporous media via pore-scale lattice Boltzmann *** apparent permeability from the viscous flow and apparent diffusivity from the mass diffusion are estimated.A dimensionless parameter,i.e.,the diffusion-flow ratio,is proposed to evaluate the dominant transport mechanism,which is a function of the apparent permeability,apparent diffusivity,bulk dynamic viscosity,and working *** results show that the apparent permeability increases by approximately two orders of magnitude when the average Knudsen number(Kn_(avg))of the nanoporous media or Knudsen number(Kn)of single nanoscale pores increases from 0.1 to *** the same conditions,the increment in the apparent diffusivity is only approximately one order of *** Kn10,the apparent diffusivity has an upper bound(i.e.,Knudsen diffusivity).The dominant transport mechanism in single nanoscale pores is the viscous flow for 0.01

关键词： Porous media Viscous flow Mass diffusion Apparent permeability Apparent diffusivity Lattice Boltzmann method

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面向时序InSAR的卫星任务规划框架设计

上海航天（中英文） 2024年第2期41卷 137-144页

作者：玉龙飞雪刘国栋邱虎孙静宜张钊屈炜白晨中国四维测绘技术有限公司北京100089 中国资源卫星应用中心北京100094 上海科学技术交流中心上海200235 上海卫星工程研究所上海200240

随着国内自主雷达卫星和差分干涉合成孔径雷达技术(D-InSAR)及衍生的时序InSAR技术的发展,以时间序列上重复观测为主的长周期形变监测的应用与日俱增。对遥感卫星地面任务规划系统来说,规划和管理大量有时序关联的重复任务,从而最大限... 详细信息

随着国内自主雷达卫星和差分干涉合成孔径雷达技术(D-InSAR)及衍生的时序InSAR技术的发展,以时间序列上重复观测为主的长周期形变监测的应用与日俱增。对遥感卫星地面任务规划系统来说,规划和管理大量有时序关联的重复任务,从而最大限度地满足观测要求,是提升以形变监测为使命的雷达卫星运控效率的关键。在综合考虑雷达差分干涉任务序列性、一致性、周期性特征的基础上,设计了一种面向雷达卫星时序InSAR类型任务的规划框架,旨在规划序列任务时,考虑序列整体特性,进行序列任务组间的冲突检测。基于此方法,对现有的地面任务规划系统进行了优化升级,验证了框架的有效性。结果证明:该方法可快速、自动进行序列任务冲突消解,可为长周期序列任务的规划和管理提供设计参考。

关键词：雷达卫星(SAR) 任务规划序列任务差分干涉合成孔径雷达(D-InSAR) 规划框架

Does Population Aging Hinder the Accumulation of Human Capital?Evidence from China

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Frontiers of Economics in China-Selected Publications from Chinese Universities 2020年第2期15卷 257-281页

作者： Yufei Liu Xi qu Wei Wang Xiaokun Chang College of Business and Economics Shanghai Business SchoolShanghai 201400China Antai College of Economics&Management Shanghai Jiao Tong UniversityShanghai 200030China School of Public Economics and Administration and Shanghai Key Laboratory of Financial Information Technology Shanghai University of Finance and EconomicsShanghai 200433China School of Economics&Management Shanghai Maritime UniversityShanghai 201306China

There is no consensus on the impact of population aging on education *** explore this question,we first build an overlapping generations(OLG)model to theoretically analyze the effect of population aging on human capital investment in China,and then test our theory by conducting an empirical study based on micro household *** find the following.(1)Theoretically,the OLG model shows that population aging has a crowding-out effect on education investment.(2)Empirically,the results show that the share of education and training expenditures decreases by 5.27 percentage points as the ratio of old people in the household increases by 100 percentage points,which confirms the crowding-out effect of population aging on human capital investment.(3)The crowding-out effect is far more intense on urban households than on rural households since health care expenditures will be greater in urban areas as population aging increases.(4)A quantile regression indicates that the negative effect of population aging on the share of educational expenditure is concentrated in households with higher shares of education *** confirm the robustness of our results using regional fixed effect and instrumental variable(Ⅳ)regressions.

关键词： population aging human capital investment China family panel studies(CFPS) crowding-out effect education expenditure

YAP调控Notch信号通路影响小鼠NASH肝纤维化的机制及慈菇消脂方的干预作用

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中国医科大学学报 2024年第5期53卷 392-400页

作者：王莉王兴胜赵秀萍王爱娣屈红梅马燕花甘肃中医药大学第一临床医学院消化内科兰州730000 甘肃中医药大学第三附属医院·白银市第一人民医院消化二部甘肃白银730900

目的探讨Yes相关蛋白(YAP)调控Notch信号通路影响非酒精性脂肪性肝炎(NASH)肝纤维化的机制及解毒化痰法中药慈菇消脂方的干预作用。方法将小鼠随机分为正常组、NASH肝纤维化模型组、维替泊芬(VP)组、VP+中药低剂量组、VP+中药高剂量组和... 详细信息

目的探讨Yes相关蛋白(YAP)调控Notch信号通路影响非酒精性脂肪性肝炎(NASH)肝纤维化的机制及解毒化痰法中药慈菇消脂方的干预作用。方法将小鼠随机分为正常组、NASH肝纤维化模型组、维替泊芬(VP)组、VP+中药低剂量组、VP+中药高剂量组和DMSO对照组。采用蛋氨酸-胆碱缺乏(MCD)饮食联合小剂量CCl4建立小鼠NASH相关肝纤维化模型,采用HE、Masson染色观察肝脏纤维化程度,ELISA法检测肝纤维化四项,碱水法测定小鼠肝脏中羟脯氨酸含量,免疫组织化学法检测α-SMA、ColⅠ、YAP、Notch1蛋白在肝脏中的定位,Western blotting及实时定量PCR检测Notch信号通路中Notch1/2、Jagged1和DLL4蛋白及mRNA表达。结果NASH肝纤维化组小鼠肝细胞肿胀、胞质透明,肝小叶、门管区以及窦周均存在明显纤维化,并伴有大量炎症细胞浸润及多量脂肪小滴,局部出现肝细胞坏死、溶解以及肝硬化;肝纤维化四项指标显著升高(P<0.01);肝细胞中α-SMA、ColⅠ、YAP以及Notch1定位于细胞质中;肝脏中YAP、Notch1/2及Jagged1均呈高表达(P<0.01)。经VP及VP联合高、低剂量中药慈菇消脂方分别干预后,小鼠肝脏中YAP、Notch1/2及Jagged1均呈低表达(P<0.05),DLL4因子在VP联合中药高剂量组上调(P<0.05)。结论YAP可能通过下调Notch1/2、Jagged1及上调DLL4,抑制Notch通路活化,干预NASH肝纤维化发生。中药慈菇消脂方通过多成分、多靶点下调YAP、Notch1/2、Jagged1、上调DLL4,抑制Notch信号通路活化,改善NASH肝纤维化进展。

关键词：非酒精性脂肪性肝炎肝纤维化 Yes相关蛋白 Notch信号通路慈菇消脂方

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低层大气红外吸收透过率计算模型

激光与红外 2024年第2期54卷 249-255页

作者：王志会屈鸿伟张晶涛王东杰邓骏杰空军预警学院湖北武汉430019

计算大气透过率是有效进行空中目标红外特性探测的重要前提。本文针对低层大气红外吸收透过率随海拔高度的变化规律,建立数值模拟计算模型。该模型在基于低层大气中水蒸气及CO_(2)吸收能力受海拔高度影响的基础上,增加了大气密度随高度... 详细信息

计算大气透过率是有效进行空中目标红外特性探测的重要前提。本文针对低层大气红外吸收透过率随海拔高度的变化规律,建立数值模拟计算模型。该模型在基于低层大气中水蒸气及CO_(2)吸收能力受海拔高度影响的基础上,增加了大气密度随高度变化产生的重要影响,综合分析了水平路程传输和倾斜路程传输两种情况下的低层大气吸收透过率。仿真实验将模型计算结果与MODTRAN5软件计算结果进行了对比,有效验证了该模型的可靠性和有效性。

关键词：低层大气吸收透过率数值模拟水平路程倾斜路程

p-Terphenyl alcohols from a marine sponge-derived fungus, Aspergillus candidus OUCMDZ-1051

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Marine Life Science & Technology 2020年第3期2卷 262-267页

作者： Dongyang Wang Peng qu Jiayu Zhou Yi Wang Liping Wang Weiming Zhu Key Laboratory of Marine Drugs Ministry of Education of ChinaSchool of Medicine and PharmacyOcean University of ChinaQingdao 266003China Open Studio for Druggability Research of Marine Natural Products.Laboratory for Marine Drugs and Bioproducts Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266003China State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical UniversityGuiyang 550014China

In order to discover structurally new and bioactive conipounds from marine life,we studied the secondary metabolites of the marine-derived fungi associated with a marine sponge(XS-3)from the Xisha *** a result,4-O-methylcandidusin A(1),a new p-terphenyl alcohol,along with nine known analogs(2-10),were isolated and identified from the marine spongederived fungus Aspergillus candidus *** structures of these compounds were determined by analyzing spectroscopic data,especially ID and 2D *** new compound 1 selectively inhibited the growth of the MDA-MB-46&BT474 and A431 human cancer cell lines with the IC_(50) values of 1.84,6.05 and 0.98 pmol/L,*** 1 also displayed a selective antimicrobial activity against Escherichia coli with an MIC value of 27.3 pmol/*** results indicated 4-O-methylcandidusin A(1)as a potential lead in the new drug discovery for triple negative breast cancer,invasive ductal breast cancer and epidermoid *** antimicrobial metabolites also evidenced a clue for chemical defense of sponges by their associated microorganisms.

关键词： Sponge-derived fungus Aspergillus candidus Natural products p-Terphenyl Cytotoxicity Antimicrobial activity

T21 China 2050: A Tool for National Sustainable Development Planning

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Geography and Sustainability 2020年第1期1卷 33-46页

作者： Weishuang qu Wenzhao Shi Junze Zhang Tong Liu Millennium Institute ArlingtonVA22201USA(retired) Digital China Health 7th FloorShenzhoushuma PlazaNo.16 Suzhoujie StreetHaidian DistrictBeijing100080China State Key Laboratory of Earth Surface Processes and Resource Ecology Faculty of Geographical ScienceBeijing Normal UniversityBeijing100875China

The Sustainable Development Goals(SDGs)of the United Nations 2030 Agenda are a key focus for implementing the Sustainable Development(SD)*** generally speaking,SD goals and targets are continuously evolving,country specific,complex to implement,and are often given relatively short time horizons,such as the 15-year horizon for the *** SD issues need a much longer time horizon as the policy interventions to deal with these issues can take decades before their effects become apparent,which is especially true for *** T21 China 2050 is developed to study the long-term SD challenges and opportunities of the *** its business-as-usual simulation to 2050,T21 China 2050 reveals some of the sustainability challenges facing China,including 1)aging population and labor force decline,2)huge food imports,3)land degradation and loss of arable land,4)water shortages,5)huge fossil fuel imports,and 6)carbon dioxide *** SD issues are a subset of the SDGs specifically relevant to China over a time horizon well beyond *** model is then used to test possible policy interventions in these six areas under two separate scenarios:Balanced and Narrowly *** major results from these two scenarios are compared with those of the business-as-usual *** simulations show that by adopting certain policy measures,China’s path towards SD can be further *** also shows that a variety of policy measures can be selected and tested with the T21 China 2050 model for exploring the future SD prospects of the *** policies recommended include:extension of retirement age,adjustment of the current family planning policy,protection of agriculture land,promotion of agricultural R&D to raise yield,improvement of public transportation to slow private vehicle ownership,increased investment in renewable energy,and water conservation.

关键词： Sustainable development planning Scenario comparison SDGs

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滇水金凤4CL基因的克隆及表达分析

福建农业学报 2024年第1期39卷 40-48页

作者：陈心仪吴成英贺海皓黄海泉瞿素萍黄美娟西南林业大学园林园艺学院/国家林业和草原局西南风景园林工程技术研究中心/云南省功能性花卉资源及产业化技术工程研究中心/西南林业大学园林园艺花卉研发中心云南昆明650224 云南省农业科学院花卉研究所云南昆明650205

【目的】4-香豆酰-CoA连接酶(4CL)作为苯丙烷类代谢途径的关键酶之一,对花青素合成起着重要作用。探究滇水金凤4CL基因(命名为Iu4CL)对滇水金凤花色调控的分子机理,为其花色调控及花色育种提供参考依据。【方法】以滇水金凤为材料,采用R... 详细信息

【目的】4-香豆酰-CoA连接酶(4CL)作为苯丙烷类代谢途径的关键酶之一,对花青素合成起着重要作用。探究滇水金凤4CL基因(命名为Iu4CL)对滇水金凤花色调控的分子机理,为其花色调控及花色育种提供参考依据。【方法】以滇水金凤为材料,采用RT-PCR技术分离克隆Iu4CL1、Iu4CL2、Iu4CL3和Iu4CL4基因,并对其生物信息学进行分析;通过qRT-PCR技术对4CL基因在4种不同花色(白色、粉色、红色和深红色)及其4个不同花发育时期(花苞期S1、始花期S2、盛花期S3和谢花期S4)中的表达情况进行分析。【结果】Iu4CL1、Iu4CL2、Iu4CL3和Iu4CL4的cDNA全长分别为1620、1653、1698、1638 bp,分别编码539、550、565、545个氨基酸;其中Iu4CL1和Iu4CL2分别含有2个和4个内含子,Iu4CL3和Iu4CL4没有内含子。生物信息学分析表明,Iu4CL1、Iu4CL2和Iu4CL4为稳定蛋白,Iu4CL3为不稳定蛋白;4个基因均为无信号肽疏水性蛋白;Iu4CL2有3个跨膜结构,其余3个基因均不存在跨膜结构;Iu4CL基因4个拷贝均属于AMP结合酶超级家族和腺苷酸形成域I类超级家族。同源性分析表明,Iu4CL基因的4个拷贝均与喜马拉雅凤仙花的同源性最高;且Iu4CL1和Iu4CL2处于同一个大的分支中,而Iu4CL3和Iu4CL4处于另一个大的分支中,推测可能为旁系同源。qRT-PCR分析表明,Iu4CL基因的4个拷贝在4种不同花色和4个不同花发育时期的滇水金凤花器官中均有表达,其中Iu4CL1和Iu4CL3基因在白色花器官S3(盛花期)阶段表达量最高;Iu4CL2基因在红色花器官S3(盛花期)阶段表达量达到顶峰;Iu4CL4基因在深红色花器官S3(盛花期)阶段表达量最高。【结论】Iu4CL基因可能在滇水金凤花青素生物合成中发挥重要作用。

关键词：滇水金凤 4CL基因花色基因克隆表达分析

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