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Cancer Biology & Medicine 2017年第4期14卷 418-425页

作者： Puchun Er tian Zhang Jing wang Qingsong Pang ping wang Department of Radiotherapy Tianjin Medical University Cancer Institute and Hospital National Clinical Research Center for Cancer Key Laboratory of Cancer Prevention and Therapy Tianjin Tianjin's Clinical Research Center for Cancer Tianjin 300060 China

Brain metastasis(BM)arising from non-small cell lung cancer(NSCLC)with rare epidermal growth factor receptor(EGFR)mutations is quite *** prognosis and therapeutic effects of BM remain *** the best of our knowledge,this is the first report to make a separate analysis of BM from NSCLC patients with original uncommon EGFR *** retrospectively reviewed 7 cases of BM arising from 42 cases of uncommon EGFR mutated lung cancer in tianjin Medical University Cancer Institute and *** also performed a literature review to assess therapeutic features and outcomes.

关键词： Brain metastasis NSCLC uncommon EGFR mutations EGFR-TKIs brain radiotherapy chemotherapy

Impacts of aerosol chemical compositions on optical properties in urban Beijing,China

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Particuology 2015年第1期13卷 155-164页

作者： ping tian Guangfu wang Renjian Zhang Yunfei Wu Peng Yan Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education College of Nuclear Science and TechnologyBeijing Normal University Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science & Technology Key Laboratory of Regional Climate-Environment for East Asia Institute of Atmospheric PhysicsChinese Academy of Sciences Centre for Atmosphere Watch and Services Meteorological Observation Center of China Meteorological Administration

The optical properties of aerosols and their chemical composition, including water-soluble ions, organic carbon （OC）, and elemental carbon （EC） in PM2.5 and PM10, were measured from 26 May to 30 June of 2012 at an urban site in Beijing. The daily average concentrations of PM2.5 and PM10 were 103.2 and 159.6 μg/m^3, respectively. On average, the OC and EC contributed 20.1% and 4.3%, respectively, to PM2.5 and 16.3% and 3.9%, respectively, to PM10. Secondary ions （SO4^2-, NO3-, and NH4^＋） dominated the water-soluble ions and accounted for 57.9% and 62.6% of PM2.5 and PM10, respectively. The wind dependence of PM2.5, OC, SO4^2-, and NO3 implied that the pollution sources mainly came from south and southeast of Beijing during the summer. The monthly mean values of the scattering coefficient （σsc） and absorption coefficient （σab） at 525 nm were 312.9 and 28.7 Mm^-1, respectively, and the mean single-scattering albedo （ω） was 0.85. The wind dependence of σsc revealed that this value was mainly influenced by regional transport during the summer, and the relationship between aab and wind indicated that a high crab resulted from the joint effects of local emissions and regional transport. The reconstructed σsc that was derived from the revised IMPROVE equation agreed well with the observations. The contribution of different chemical species to crsc was investigated under different pollution levels, and it was found that secondary inorganic aerosols accounted for a large part of σsc during pollution episodes （35.7%）, while organic matter was the main contributor to σsc under clean conditions （33.6%）.

关键词： Urban aerosol PM2.5 Optical property Chemical composition

Effect of Ni Loading on the Catalytic Properties of Molybdenum Oxides for the Isomerization of Heptane

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Chinese Chemical Letters 2002年第2期13卷 177-180页

作者： Ying Jun wang Xin ping wang tian Xi CAI State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116012

The catalytic properties of MoOx and incorporation Ni onto the MoOx for the isomerization of heptane have been investigated under atmospheric pressure at different conditions such as different flow rate of H2, different reaction temperature etc.. Compared with MoOx, the Ni addition to the MoOx markedly improved the isomerization activity of heptane by improving the reducibility of MoO3 and activation of H2 in reaction.

关键词： Molybdenum oxides nickel isomerization heptane.

A Durable Catalyst for Vapor Phase Nitration of Benzene with Nitric Acid

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Chinese Chemical Letters 2002年第10期13卷 1013-1016页

作者： Peng ZHOU Xin ping wang tian Xi CAI State Key Laboratory of Fine Chemicals School of Chemical EngineeringDalian University of TechnologyDalian 116012

Experimental results in this work demonstrate that PW12-H2SO4/SiO2 catalyst is a good and durable catalyst for vapor phase nitration of benzene to nitrobenzene (NB) using 65% nitric acid at normal pressure. It retains the advantages of using H2SO4 as catalyst and the addition of phosphotungstic acid holds back the effusion of sulfuric acid. This new catalyst keeps high activity (the conversion of HNO3 is more than 92%), high selectivity of NB (more than 97%) and high space time yield (STY 1.5 kg NB/kg cat.h) even after 150 h on stream, under condition of 423 K, SV=3200 ml/g h.

关键词： Nitration benzene solid acid nitric acid nitrobenzene.

Characterization of the key aroma compounds in four varieties of pomegranate juice by gas chromatography-mass spectrometry(GC-MS),gas chromatography-olfactometry(GC-O),odor activity value(OAV),aroma recombination,and omission tests

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Food Science and Human Wellness 2023年第1期12卷 151-160页

作者： Cong Lu Yuyu Zhang ping Zhan Peng wang Honglei tian College of Food Engineering and Nutritional Science Shaanxi Normal UniversityXi’an 710119China Beijing Key Laboratory of Flavor Chemistry Beijing Technology and Business UniversityBeijing 100048China

P omegranate(Punica granatum L.)has attracted considerable attention in world markets due to its valuable nutrients and highly appreciated sensory *** aroma profiles of 4 varieties of pomegranate juice,including Dahongtian(DP),Jingpitian(JP),Luyudan(LP),and tianhonngdan(TP),were investigated via gas chromatography-mass spectrometry(GC-MS)and gas chromatography-olfactometry(GC-O)analyses.A total of 43 volatile compounds were identified by using *** these compounds,16 were considered as potential aroma-active compounds as detected by *** compounds belonged to the classes of terpinenes,alcohols,and *** volatile compounds were defined as the main contributors to the overall aroma of pomegranate juice due to their high odor activity values(OAVs≥1).Aroma recombination and omission tests confirmed thatβ-myrcene,1-hexanol,and(Z)-3-hexen-1-ol were the key aroma compounds,and limonene,1-octen-3-ol,linalool,and hexanal were important aroma-active compounds in DP samples.

关键词： Pomegranate juice Aroma-active compounds GC-MS GC-O Odor active value(OAV) Omission tests

Improvement in Toughness of Poly(ethylene 2,5-furandicarboxylate) by Melt Blending with Bio-based Polyamide11 in the Presence of a Reactive Compatibilizer

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Chinese Journal of Polymer Science 2020年第10期38卷 1099-1106页

作者： Yong Yang An-ping tian Ya-Jin Fang Jing-Gang wang Jin Zhu Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of Sciences Weihai Honglin Electronic Technology CO. LTD

The objective of this study was to improve the toughness of bio-based brittle poly(ethylene 2,5-furandicarboxylate)(PEF) by melt blending with bio-based polyamide11(PA11) in the presence of a reactive multifunctional epoxy compatibilizer(Joncryl ADR?-4368).The morphological,thermal,rheological,and mechanical properties of PEF/PA1 1 blends were *** with neat PEF,the toughness of PEF/PA11 blend was not improved in the absence of the reactive compatibilizer due to the poor compatibility between the two *** Joncryl was incorporated into PEF/PA1 1 blends,the interfacial tension between PEF and PA1 1 was obviously reduced,reflecting in the fine average particle size and narrow distribution of PA11 dispersed phase as observed by scanning electron microscopy(SEM).The complex viscosities of PEF/PA11 blends with Joncryl were much higher than that of PEF/PA11 blend,which could be ascribed to the formation of graft copolymers through the epoxy groups of Joncryl reacting with the end groups of PEF and PA11 molecular ***,the compatibility and interfacial adhesion between PEF and PA11 were greatly improved in the presence of *** compatibilized PEF/PA11 blend with 1.5 phr Joncryl exhibited significantly improved elongation at break and unnotch impact strength with values of 90.1% and 30.3 kJ/m2,respectively,compared with those of 3.6% and 3.8 kJ/m2for neat PEF,*** work provides an effective approach to improve the toughness of PEF which may expand its widespread application in packaging.

关键词： Poly(ethylene 2,5-furandicarboxylate) Polyamide11 Bio-based polymers Reactive compatibilization Toughening

Research on the Relationship Between Environmental and Economic Coupling Systems in Bohai Bay Area Based on a Vector Autoregression(VAR)Model

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Journal of Ocean University of China 2024年第2期23卷 557-566页

作者： CAO Huimin wang ping ZHANG Surong XU Dongpo tian Weijun Key Laboratory of Marine Environment and Ecology Ministry of EducationOcean University of ChinaQingdao 266100China Business School Qingdao UniversityQingdao 266100China

This study analyzed the impact of land-based contaminants and tertiary industrial structure on economic development in the selected Bohai Bay area,*** on panel data spanning 2011-2020,a vector autoregressive(VAR)model is used to analyze and forecast the short-run and long-run relationships between three industrial structures,pollutant discharge,and economic *** results showed that the environmental index had a long-term cointegration relationship with the industrial structure economic *** capital chemical oxygen demand(PCOD)and per capita ammonia nitrogen(PNH_(3)N)had a positive impact on delta per capita GDP(dPGDP),while per capita solid waste(PSW),the secondary industry rate(SIR)and delta tertiary industry(dTIR)had a negative impact on *** VAR model under this coupling system had stability and *** impulse response results showed that the short-term effect of the coupling system on dPGDP was basically consistent with the Granger causality test *** addition,variance decomposition was used in this study to predict the long-term impact of the coupling system in the next ten periods(i.e.,ten years).It was found that dTIR had a great impact on dPGDP,with a contribution rate as high as 74.35%in the tenth period,followed by the contribution rate of PCOD up to 3.94%,while the long-term contribution rates of PSW,SIR and PNH3N were all less than 1%.The results show that the government should support the development of the tertiary industry to maintain the vitality of economic development and prevent environmental deterioration.

关键词： Bohai Bay area environmental pollution industrial structure cointegration theory VAR model impulse response

Consolidation mechanism of fluxed hematite pellets

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Journal of Iron and Steel Research International 2022年第10期29卷 1526-1534页

作者： Hao Wu Tie-jun Chun ping wang Song Zhou tian-bao Zhou School of Metallurgical Engineering Anhui University of TechnologyMa’anshan243002AnhuiChina

Fluxed pellets are becoming a popular burden for the blast furnace in *** basicity(wCaO/wSiO_(2))ranging from 0.33 to 1.33 was prepared by adding CaO analytical *** phase change of pellets during roasting was analyzed by the FactSage software,and the consolidation mechanism of fluxed hematite pellets was also *** results show that the increase in basicity gradually increases the diameter,volume,and porosity of *** diameter,volume,and porosity of pellets change slightly when the basicity is greater than *** increase in roasting temperature gradually decreases the volume and porosity of *** the increase in pellet basicity,the compressive strength of pellets reaches the maximum at the basicity of *** higher the roasting temperature is,the more the slag phase is produced,thereby accelerating Fe^(3+)diffusion and promoting Fe_(2)O_(3) *** addition,the consolidation effect of the slag phase after cooling improves the consolidation strength of fluxed *** the basicity is higher than 0.83,the slag phase decreases with the increase in basicity,and the high-temperature solid solution,such as melilite and spinel,increases,thereby hindering Fe2O3 recrystallization.

关键词： Fluxed pellet Consolidation Porosity Recrystallization Basicity

Smoothing Parametric Design of Addendum Surfaces for Sheet Metal Forming

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Chinese Journal of Mechanical Engineering 2020年第1期33卷 75-82页

作者： Jixing Li Tao Ning ping Xi Bifu Hu tian wang Jiong Yang School of Mechanical Engineering and Automation Beihang UniversityBeijing 100192China School of Mechanical Engineering Zhengzhou UniversityZhengzhou 450001China

The manual design of addendum surfaces on common CAD platforms is very tedious which requires many trialscorrections,which will certainly a ect the construction e ciency and quality of addendum surfaces,and then a ect the formability and quality of the workpiece in the process of sheet *** this paper,an automatic procedure based on parametric design method is proposed for the rapid construction of the addendum *** kernel of the parametric method is constructing boundary curves based on the shape of surfaces of workpiece and designing guide curves based on Hermite curve *** some simple parameters,the shape of the addendum surfaces could be controlled and adjusted *** addition,a minimum energy optimization method is employed to further optimize the constructed addendum surface.A finite element analysis for the sheet forming process is performed to evaluate the forming quality of constructed addendum *** instance illustrates that the addendum surface constructed by the proposed method could ensure both the overall smoothing of surfaces and the final forming quality,and it has a good e ect on springback after *** research proposes a smoothing parametric design method for addendum surfaces construction which could construct and optimize addendum surfaces rapidly.

关键词： CAD/CAM Parametric design Curve optimization Addendum surface Sheet forming

Interaction Between Cryptococcus laurentii,Monilinia fructicola,and Sweet Cherry Fruit at Different Temperatures

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Agricultural Sciences in China 2008年第1期7卷 48-57页

作者： wang You-sheng tian Shi-ping Beijing Key Laboratory of Plant Resources Research and Development Beijing Technology and Business University Beijing 100037 P.R. China Key Laboratory of Photosynthesis and Environmental Molecular Physiology Institute of Botany Chinese Academy of Sciences Beijing 100093 P.R.Chinu

The present study was performed mainly to investigate the antagonist-pathogen-host interaction in wounds of the sweet cherry fruits. The antagonistic yeast Cryptococcus laurentii could significantly reduce the brown rot of the sweet cherry fruit caused by Monilinia fructicola at 25 and 1 ℃. The populations of yeast increased faster in the presence of the pathogen initially, but then decreased rapidly. In the fruits inoculated with M. fructicola alone or combined with C. laurentii, an induction of lipid peroxidation as well as activities of the antioxidant enzymes, such as, superoxide dismutases （SOD）, catalase （CAT）, and peroxidase （POD）, was observed. The isoenzyme pattern of polypheno/oxidase （PPO） changed greatly after the symptoms appeared, with new PPO isoforms being induced. By contrast, the induction of lipid peroxidation and activities of SOD, CAT, and POD were low, although no significant changes were found in the PPO isoenzyms in the fruits inoculated with antagonist C. laurentii alone. The inhibition of brown rot during the antagonist- pathogen-host interaction in wounds of the sweet cherry fruits was mainly on account of the stimulated growth of C. laurentii as well as the induction of antioxidant enzymes of the fruits by M. fructicola.

关键词： Cryptococcus laurentii Monilinia fructicola sweet cherry interaction