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Temporal variations and source apportionment of volatile organic compounds at an urban site in Shijiazhuang, China

Journal of Environmental Sciences 2020年第11期32卷 25-34页

作者： yanan guan Lei Wang Shujuan Wang Yihao Zhang Jieying Xiao Xiaoli Wang Erhong Duan Li'an Hou School of Environmental Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050018China National and Local Joint Engineering Center of Volatile Organic Compounds&Odorous Pollution Control Technology Shijiazhuang 050018China Hebei Province Environmental Monitoring Center Shijiazhuang 050018China Hebei Province Environmental Emergency and Heavy Pollution Weather Warning Center Shijiazhuang 050018China Logistics Science and Technology Research Institute of Rocket Army Beijing 100011China

Shijiazhuang,the city with the worst air quality in China,is suffering from severe ozone pollution in *** the key precursors of ozone generation,it is necessary to control the Volatile Organic Compounds(VOCs)*** have a better understanding of the pollution status and source contribution,the concentrations of 117 ambient VOCs were analyzed from April to August 2018 in an urban site in *** showed that the monthly average concentration of total VOCs was 66.27 ppbv,in which,the oxygenated VOCs(37.89%),alkanes(33.89%),and halogenated hydrocarbons(13.31%)were the main composite *** major sources were identified using Positive Matrix Factorization modeling with an accurate VOCs emission inventory as inter-complementary methods revealed that the petrochemical industry(26.24%),other industrial sources(15.19%),and traffic source(12.24%)were the major sources for ambient VOCs in *** spatial distributions of major industrial activities emissions were identified by using geographic information statistics system,which illustrated the VOCs was mainly from the north and southeast of *** inverse trajectory analysis using Hybrid Single-Particle Lagrangian Integrated Trajectory(HYSPLIT)and Potential Source Contribution Function(PSCF)clearly demonstrated the features of pollutant transport to *** findings can provide references for local governments regarding control strategies to reduce VOCs emissions.

关键词： VOCs Source analysis Positive Matrix Factorization(PMF) modeling GIS Inverse trajectory Shijiazhuang

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Using ultrasound to improve the sequential post-synthesis modification method for making mesoporous Y zeolites

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Frontiers of Chemical Science and Engineering 2020年第2期14卷 275-287页

作者： Rongxin Zhang Peinan Zhong Hamidreza Arandivan yanan guan Jinmin Liu Na Wang Yilai Jiao Xiaolei Fan Department of Chemical Engineering and Analytical Science School of EngineeringThe University of ManchesterManchesterM139PLUK Laboratory of Advanced Catalysis for Sustainability School of ChemistryThe University of SydneySydney 2006Australia Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Sino-Spanish Advanced Materials Institute Shenyang University of Chemical TechnologyShenyang 110142China Advanced Manufacturing Institute of Polymer Industry(AMIPI) Shenyang University of Chemical TechnologyShenyang 110142China Key Laboratory of Materials and Advanced Equipment for Resource Chemical Technology(Ministry of Education) Shenyang University of Chemical TechnologyShenyang 110142China

Mesoporous Y zeolites were prepared by the sequential chemical dealumination(using chelating agents such as ethylenediaminetetraacetic acid,H EDTA,and citric acid aqueous solutions)and alkaline desilication(using sodium hydroxide,NaOH,aqueous solutions)***,the ultrasound-assisted alkaline treatment(i.e.,ultrasonic treatment)was proposed as the alternative to conventional alkaline treatments which are performed under hydrothermal *** comparison with the hydrothermal alkaline treatment,the ultrasonic treatment showed the comparatively enhanced efficiency(with the reduced treatment time,i.e.,5 min vs.30 min,all with 0.2 mol·L NaOH at 65°C)in treating the dealuminated Y zeolites for creating *** example,after the treatment of a dealuminated zeolite Y(using 0.1 mol·L H EDTA at 100°C for 6 h),the ultrasonic treatment produced the mesoporous zeolite Y with the specific external surface area()of 160 m·g and mesopore volume()of 0.22 cm·g,being slightly higher than that by the conventional method(i.e.,=128 m·g and=0.19 cm·g).The acidic property and catalytic activity(in catalytic cracking of-octane)of mesoporous Y zeolites obtained by the two methods were *** ultrasonic desilication treatment was found to be generic,also being effective to treat the dealuminated Y zeolites by citric ***,the first step of chemical dealumination treatment was crucial to enable the effective creation of mesopores in the parent Y zeolite(with a silicon-to-aluminium ratio,Si/Al=2.6)regardless of the subsequent alkaline desilication treatment(i.e.,ultrasonic or hydrothermal).Therefore,appropriate selection of the condition of the chemical dealumination treatment based on the property of parent zeolites,such as Si/Al ratio and crystallinity,is important for making mesoporous zeolites effectively.

关键词： zeolite Y mesoporous zeolite post-synthesis treatment ultrasound chemical dealumination treatment alkaline desilication treatment

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Additive manufacturing of sodalite monolith for continuous heavy metal removal from water sources

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Chinese Journal of Chemical Engineering 2022年第2期35卷 82-90页

作者： Hengyu Shen Run Zou Yangtao Zhou Xing Guo yanan guan Duo Na Jinsong Zhang Xiaolei Fan Yilai Jiao Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Department of Chemical Engineering The University of ManchesterOxford RoadManchester M139PLUnited Kingdom Science and Technology on Vacuum Technology and Physics Laboratory Lanzhou Institute of PhysicsLanzhou 730010China

Herein,we present a simple strategy for preparing monolithic sodalite adsorbents via sequential additive manufacturing and *** detail,the method includes(i)3D printing of cylindrical monoliths using clay as the base material;(ii)thermal activation of the 3D-printed clay monoliths by calcination(to produce reactive alumina and silica species and enable mechanical stabilization);(iii)conversion of the activated clay monoliths to hierarchical porous sodalite monoliths via hydrothermal alkaline *** studies on the effect of calcination temperature,alkaline concentration and hydrothermal treatment time on the property of the resulting materials(such as phase composition and morphology)at different stages of preparation was *** the optimal conditions(i.e.,calcination temperature of 850℃,NaOH concentration of 3.3 mol·L^(-1),reaction temperature of 150℃,and reaction time of 6 h),a high-quality pure sodalite monolith was obtained,which possesses a relatively high BET surface area(58 m^(2)·g^(-1))and hierarchically micro-meso-macroporous *** the proposed application of continuous removal of heavy metals(chromium ion as the model)from wastewater,the developed 3D-printed sodalite monolith showed excellent Cr^(3+)removal performance and fast kinetics(~98%removal efficiency within 25 cycles),which outperformed the packed bed using sodalite pellets(made by extrusion).

关键词： Additive manufacturing Clay Sodalite monolith Heavy metal removal

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Structured hierarchical Mn–Co mixed oxides supported on silicalite-1 foam catalyst for catalytic combustion

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Chinese Journal of Chemical Engineering 2020年第9期28卷 2319-2327页

作者： yanan guan Hengyu Shen Xing Guo Boyang Mao Zhenyuan Yang Yangtao Zhou He Liang Xiaolei Fan Yilai Jiao jinsong Zhang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Science and Technology on Vacuum Technology and Physics Laboratory Lanzhou Institute of PhysicsLanzhou 730010China Department of Engineering University of CambridgeJJ Thomson AvenueCambridge CB30FAUnited Kingdom Department of Eye and Vision Science Institute of Life Course and Medical SciencesUniversity of Liverpool6 WestDerby StreetLiverpoolL78TXUnited Kingdom Department of Chemical Engineering and Analytical Science School of EngineeringThe University of ManchesterOxford RoadManchesterM139PLUnited Kingdom

Silicalite-1(S1)foam was functionalized by supporting manganese-cobalt(Mn-Co)mixed oxides to develop the structured hierarchical catalyst(Mn-Co@SlF)for catalytic combustion for the first *** self-supporting S1 foam with hierarchical porosity was prepared via hydrothermal synthesis with polyurethane(PU)foam as the ***,Mn-Co oxide nano sheets were uniformly grown on the surface of S1 foams under hydrothermal conditions to prepare the structured hierarchical catalyst with specific surface area of 354 m^2·g^-1,micropore volume of 0.141 cm^3·g^-1 and total pore volume of 0.217 cm3·g^-1,as well as a good capacity to adsorb toluene(1.7 mmol·g^-1 at p/p0=0.99).Comparative catalytic combustion of toluene of over developed structured catalyst Mn-Co@SlF was performed against the control catalysts of bulk Mn-Co@S1(i.e.,the crushed Mn-Co@SlF)and unsupported Mn-Co oxides(i.e.,Mn-Co).Mn-Co@SlF exhibited comparatively the best catalytic performance,that is,complete and stable toluene conversion at 2480 C over 65 h due to the synergy between Mn-Co oxides and S1 foam,which provided a large number of oxygen vacancies,high redox *** addition,the hierarchical porous structure also improved the accessibility of active sites and facilitated the global mass transfer across the catalyst bed,being beneficial to the catalysis and catalyst longevity.

关键词： Structured catalyst Silicalite-1 Mn-Co oxides Cellular foam Catalytic combustion

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Haplotype variation and KASP markers for SiPSY1-A key gene controlling yellow kernel pigmentation in foxtail millet

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The Crop Journal 2023年第6期11卷 1902-1911页

作者： Rongjun Zuo Yanyan Zhang Yanbing Yang Chunfang Wang Hui Zhi Linlin Zhang Sha Tang yanan guan Shunguo Li Ruhong Cheng Zhonglin Shang guanqing Jia Xianmin Diao Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China Crop Research Institute Shandong Academy of Agricultural SciencesJinan 250100ShandongChina Institute of Millet Crops Hebei Academy of Agricultural and Forestry SciencesShijiazhuang 050035HebeiChina College of Life Sciences Hebei Normal UniversityShijiazhuang 050024HebeiChina

Carotenoid biosynthesis and accumulation are important in determining nutritional and commercial value of crop *** pigmentation of mature kernels caused by carotenoids is considered a vital quality trait in foxtail millet,an ancient and widely cultivated cereal crop across the *** regions associated with yellow pigment content(YPC),lutein and zeaxanthin in foxtail millet grains were identified by genome-wide association analysis(GWAS),and SiPSY1(Phytoene synthase 1 which regulates formation of the 40-carbon backbone of carotenoids)was confirmed as the main contributor to all three components by knockout and overexpression ***1 was expressed in seedlings,leaves,panicles,and mature seeds,and was subcellularly localized to *** of SiPSY1 in 15 DAP immature grains was responsible for YPC in mature *** of SiPSY1 combined with increased YPC in mature grains during domestication of foxtail millet was *** analysis suggested that expression level of SiPSY1 could be a selection target for future breeding programs,and a KASP marker was developed for selection of favorable SiPSY1 alleles in *** results of this work will benefit nutritional and commercial improvement of foxtail millet varieties,as well as other cereal crops.

关键词： Carotenoids Lutein Zeaxanthin Marker assisted selection Setaria italica

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Analysis of Nitrogen Metabolism Related Enzymes and Related Physiological Indexes of Main Foxtail Millet Varieties Developed in North China

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Agricultural Biotechnology 2019年第6期8卷 9-14页

作者： Qinghua KONG Erying CHEN Shuting YU Yanbing YANG Ling QIN Feifei LI yanan guan Shandong Normal University Jinan250014China Institute of Crop Sciences Shandong Academy of Agricultural SciencesJinan 250100China Qingdao Ruibo Xingke Biotechnology Co. LtdQingdao266011China

[Objectives] This study was conducted to clarify the evolution characteristics of foxtail millet varieties in different ages and provide a basis for the breeding of new varieties. [Methods] A field experiment was carried out on 20 main foxtail millet varieties promoted in North China developed from the 1980 s to 2000 s. The physiological and biochemical indexes of different foxtail millet varieties in four ages were compared, including chlorophyll content, soluble protein content, glutamine synthetase(GS) activity and glutamate synthase(GOGAT) activity, and the correlation between enzyme activity and yield was analyzed. [Results] The chlorophyll SPAD values of the flag leaf and functional leaves of foxtail millet varieties decreased with the filling process. The SPAD values of the flag leaf, top second leaf and top third leaf were higher in the varieties developed in the 1990 s and 2000 s than those in the 1980 s and 2010 s. The activity of glutamine synthetase(GS) and glutamate synthase(GOGAT) showed a single-peak curve in different foxtail millet varieties developed in the recent 30 years, and the peaks of the two were at 7 d and at 7 or 14 d, respectively. The activity of GS and GOGAT increased with the breeding age. In the period from 7 d after anthesis to the mature period, the decreases in the soluble protein content followed an order of 2010 s, 2000 s, 1990 s and 1980 s from small to large, indicating that the degradation rate of various enzyme sources and metabolic regulators in foxtail millet plants decreased during the improvement process. At 35 d after anthesis, the correlation coefficient between GS activity and yield was-0.247, that is, there was a negative correlation with yield. And there was a significant positive correlation between GOGAT activity and yield, and the correlation coefficient was as high as 0.455 at 7 d after anthesis. [Conclusions] Changes in the GS activity, GOGAT activity and soluble protein content in the flag leaf of foxtail mille

关键词： North China Foxtail millet Glutamine synthetase Glutamate synthase Age

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非螺旋排屑结构可转位铣刀的改进

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工具技术 2015年第5期49卷 77-78页

作者：关亚男刘洋哈尔滨东安液压机械股份有限公司哈尔滨第一工具制造有限公司

通过非螺旋形排屑槽的改进,设计出串联式矩形结构和独立式矩形结构排屑槽,解决小直径大切深立铣刀的加工困难等问题,分析矩形结构排屑空间的可行性。

关键词：非螺旋排屑空间串联式矩形结构独立式矩形结构

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乳腺浸润性小叶癌MRI表现及其与Ki-67指数的相关性

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中国医学影像技术 2020年第9期36卷 1335-1339页

作者：管亚男徐慧金美琦新疆医科大学附属肿瘤医院磁共振室新疆乌鲁木齐830011

目的观察乳腺浸润性小叶癌(ILC)MRI表现,分析其功能MRI参数与Ki-67指数的相关性。方法回顾性分析184例经病理证实的乳腺癌患者,其中52例ILC(ILC组)、132例浸润性导管癌(IDC组),术前均接受乳腺MR检查。对比分析2组MRI形态学特征、血流动... 详细信息

目的观察乳腺浸润性小叶癌(ILC)MRI表现,分析其功能MRI参数与Ki-67指数的相关性。方法回顾性分析184例经病理证实的乳腺癌患者,其中52例ILC(ILC组)、132例浸润性导管癌(IDC组),术前均接受乳腺MR检查。对比分析2组MRI形态学特征、血流动力学参数值及ADC值差异,探讨ILC组功能学参数值与Ki-67指数的相关性。结果与IDC组比较,ILC组Ki-67指数降低(t=-3.50,P<0.01),更易出现非肿块样强化(χ^2=48.74,P<0.01),ADC值及达峰时间(TTP)值均升高(t=2.48、2.98,P均<0.05)。ILC组Ki-67指数与ADC值呈负相关(r=-0.67,P<0.01),与早期强化率呈正相关(r=0.52,P<0.01)。结论乳腺ILC的MRI表现有一定特征性,可为术前诊断ILC及评估预后提供参考。

关键词：乳腺肿瘤磁共振成像 Ki-67抗原

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小米山药混合粉的制作及品质分析

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粮食与饲料工业 2011年第7期 23-26页

作者：王效金管延安李颖青岛农业大学食品科学与工程学院山东青岛266109 山东省农科院农作所山东济南250000

以小米和山药为原料制作混合粉。通过黏度测定和感官测评确定混合粉的制作条件为：小米粉与山药粉的配比为5：3，冲调水温为90～100℃，木糖醇的添加量质量分数为8％。对混合粉的速溶性和市售芝麻粉的速溶性指标进行分析，结果表明，混... 详细信息

以小米和山药为原料制作混合粉。通过黏度测定和感官测评确定混合粉的制作条件为：小米粉与山药粉的配比为5：3，冲调水温为90～100℃，木糖醇的添加量质量分数为8％。对混合粉的速溶性和市售芝麻粉的速溶性指标进行分析，结果表明，混合粉的分散性为142．0s，芝麻粉为112．5s，有分散时间的差异；混合粉的润湿性为102．0s，芝麻粉为95．5s，二者相差不大；混合粉的溶解度为95．99g／（100g），芝麻粉为95．78g／（100g），近乎相同。按各指标溶解度占40％、润湿性占30％、分散性占30％的权重分析，小米山药混合粉与芝麻粉的品质相似，可作为一种新型的方便食品。

关键词：小米粉山药粉黏度感官评定

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责任与代价:《觉醒》的存在主义解读

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辽宁工程技术大学学报（社会科学版） 2014年第3期16卷 275-278页

作者：管亚男安徽师范大学外国语学院安徽芜湖241000

凯特·萧邦的《觉醒》如今被公认为是一部充满女性解放思想的巨作。为了全面地分析艾德娜叛逆的深层次原因和三位男性的启蒙角色,采用萨特的存在主义理论,着重探讨艾德娜最终如何冲破了个人与他者之间可怕的"注视"与"被注视"的关系,以... 详细信息

凯特·萧邦的《觉醒》如今被公认为是一部充满女性解放思想的巨作。为了全面地分析艾德娜叛逆的深层次原因和三位男性的启蒙角色,采用萨特的存在主义理论,着重探讨艾德娜最终如何冲破了个人与他者之间可怕的"注视"与"被注视"的关系,以及获得了自我存在与自由选择的价值与意义。

关键词：凯特·萧邦《觉醒》艾德娜存在主义自由

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