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| 1 | 涡度相关法研究土壤水分状况对沙地杨树人工林生态系统能量分配和蒸散日变化的影响显示文摘为了解位于北京大兴区林场杨树人工林在不同的土壤水分环境条件下的水汽交换过程和能量的分配差异及其与环境因子关系,运用涡度相关(Eddycovariance,EC)法开路系统、常规微气象观测系统及土壤热通量板等设施对生态系统生长季内典型水分胁迫和无水分胁迫条件下蒸散日变化、能量分配以及与各环境因子的关系进行了测定分析和比较。结果表明,在水分严重胁迫日(以7月7日为例),蒸散日变化过程为单峰曲线,全天(24h)蒸散量为2·4mm;而在无水分胁迫典型日(以7月25日为例),蒸散日变化过程呈多峰曲线,全天蒸散量为4·5mm。能量平衡分析显示,无水分胁迫条件下潜热通量(LE)占净辐射通量(Rn)的比例远高于水分胁迫条件下潜热通量占净辐射通量的比例,说明水分充足时,能量的大部分用于蒸散。水分胁迫条件下蒸散速率与各环境因子的相关性均低于无水分胁迫条件下蒸散速率与环境因子的相关性。水分胁迫条件下,蒸散速率主要与净辐射和下垫面因子关系显著,而与其它因子的相关性较小;无水分胁迫条件下,蒸散速率与下垫面土体含水量和各气象因子均表现出较强的相关性。大气温度对于两个典型日蒸散速率的影响均很小;土壤含水量与水分胁迫日的蒸散速率几乎没有相关性,反应出土壤水分含量低至对蒸散几乎没有贡献了。 | 刘晨峰 张志强 查同刚 Ge Sun Chen Jiquan 朱金兆 申李华 张津林 陈军 崔令军 | 2006 | 生态学报2006，26，8： | 28 |
| 2 | NMR-based damage characterisation of backfill material in host rock under dynamic loading显示文摘It is not uncommon that backfill material used in underground mining being exposed to repetitive dynamic stresses induced by blasting operations or rockburst events. Understanding the strength and fracture evolution of backfilled stopes is critical to maintain the long-term stope stability and ensure safe mining activities. This paper aims to study the damage evolution of the backfill material and its host rock behaviour under three-dimensional(3D) dynamic loading. Using a true-triaxial testing machine, multiple samples of backfill material enclosed by country rock were fabricated and tested under various dynamic loadings with different true-triaxial confining stress conditions. In addition, the nuclear magnetic resonance(NMR) measurement was conducted on the samples before and after exerting static and dynamic loading to obtain their porosity distribution changes. The experiment results suggested that with the increase of the dynamic loading, the porosity of the backfill sample goes through a two-stage process,which shows a slightly linear decrease and then followed by an exponential increase. The research findings can help understand the damage mechanism and fracture development of backfilled stopes and its host rock in deep underground mines, which are constantly subject to the combination of 3D static confining stress and dynamic loading. | Binglei Li Jiquan Lan Guangyao Si Guopeng Lin Liuqing Hu | 2020 | International Journal of Mining Science and Technology2020，30，3： | 16 |
| 3 | Ecohydrological advances and applications in plant–water relations research:a review显示文摘Aims The field of ecohydrology is providing new theoretical frameworks and methodological approaches for understanding the complex interactions and feedbacks between vegetation and hydrologic flows at multiple scales.Here we review some of the major scientific and technological advances in ecohydrology as related to understanding the mechanisms by which plant–water relations influence water fluxes at ecosystem,watershed and landscape scales.Important Findings We identify several cross-cutting themes related to the role of plant–water relations in the ecohydrological literature,including the contrasting dynamics of water-limited and water-abundant ecosystems,transferring information about water fluxes across scales,understanding spatiotemporal heterogeneity and complexity,ecohydrological triggers associated with threshold behavior and shifts between alternative stable states and the need for long-term data sets at multiple scales.We then show how these themes are embedded within three key research areas where improved understanding of the linkages between plant–water relations and the hydrologic cycle have led to important advances in the field of ecohydrology:upscaling water fluxes from the leaf to the watershed and landscape,effects of plant–soil interactions on soil moisture dynamics and controls exerted by plant water use patterns and mechanisms on streamflow regime.In particular,we highlight several pressing environmental challenges facing society today where ecohydrology can contribute to the scientific knowledge for developing sound management and policy solutions.We conclude by identifying key challenges and opportunities for advancing contributions of plant–water relations research to ecohydrology in the future. | Heidi Asbjornsen Gregory R.Goldsmith Maria S.Alvarado-Barrientos Karin Rebel Floortje P.Van Osch Max Rietkerk Jiquan Chen Sybil Gotsch Conrado Tobon Daniel R.Geissert Alberto Gomez-Tagle Kellie Vache Todd E.Dawson | 2011 | Journal of Plant Ecology2011，4，1： | 15 |
| 4 | Electrophysiological and Behavioral Responses of Adult Anoplophom glabripennis (Motschulsky) to Volatile Components of Host-Plant显示文摘Electrophysiological and behavioral responses of adult A.glabripennis(Motsch.)to volatiles from ashleaf maple (Acer negundo L.) were investigated to identify semiochemicals involved in host location.Measurable electroantennogram(EAG) responses were elicited to all compounds tested,the most effective antennal stimulants were trans-2-hexen-l-al,decyl aldehyde and trans-2-hexen-1-ol.These profiles were similar between males and females.In Y-tube olfactometer bioassays,above three compounds with certain concentration,trans-2-hexen-1-al(1%),trans-2-hexen-1-ol(1%) and decyl aldehyde(10%),were significantly attractive to the adults in laboratory.The results show that either EAG or olfactory responding to a particular volatile compound are markedly influenced by the concentration. | Fan Hui Li Jiquan Jin YoujuCollege of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, P. R. China | 2003 | Forestry Studies in China2003，5，1： | 13 |
| 5 | 锡林郭勒草原不同植被类型的土壤水分特性显示文摘根据压力膜仪测得土壤水分特征曲线,分析了锡林郭勒草原4种植被类型下0-50cm土层的土壤水分特性。结果表明:在中、低吸力段(〈1.5MPa)土壤水吸力与土壤含水量之间存在显著相关关系,且各植被类型不同土层的曲线形状和变化趋势基本相同。4种植被类型下,土壤有效水含量、土壤持水能力和土壤供水能力呈现出多伦克氏针茅草原〉锡林浩特羊草草原〉东乌珠穆沁大针茅草原〉多伦农田。在多伦克氏针茅草原、锡林浩特羊草草原和多伦农田,随着土层深度的加深,土壤质地逐渐变粗,土壤有效水含量、土壤持水能力和土壤供水能力逐渐减小;在东乌珠穆沁大针茅草原,随着土层深度的加深,土壤机械组成先变粗后变细,在20-30m质地最粗,土壤有效水含量、土壤持水能力和土壤供水能力先减小后增大。 | 谢静 关文彬 崔国发 孙阁 Chen Jiquan 王美 綦子达 | 2009 | 东北林业大学学报2009，37，1： | 12 |
| 6 | Characteristics of strike-slip inversion structures of the Karatau fault and their petroleum geological significances in the South Turgay Basin,Kazakhstan显示文摘The Karatau fault is one of the important strike-slip faults in central Asia,and the South Turgay Basin is located towards its northern end.Detailed seismic interpretation indicated that the strikeslip tectonism of the Karatau fault weakened gradually from west to east in the South Turgay Basin.Typical flower structures developed on the section,and strike-slip faults showed an echelon pattern on planar view.The Karatau strike-slip fault affected the South Turgay Basin in two periods:(1) The South Turgay strike-slip pull-apart rift basin formed as a result of regional extensive stress in the Early-Middle Jurassic,characterized by the juxtaposition of horsts and grabens.The formation of horsts provided favorable reservoir spaces for later hydrocarbon accumulation,and different filling stages of grabens controlled different reservoir-forming factors in grabens.(2) Two stages of tectonic inversion occurred in the Late Jurassic and Late Cretaceous and played a crucial role in the final shape of the structure in the South Turgay Basin.The oil and gas migrated to form reservoirs and mainly concentrated in the horsts,graben slopes and in both sides of the strike-slip fault zone.In the case of the degree of accumulation of petroleum,the factor explaining why horsts are better than grabens is the strike-slip pull-apart of the South Turgay Basin,and the structure inversion of the South Turgay Basin explains why the west graben is better than the east one.Overall,the Karatau strike-slip fault played a very important role in the formation of the South Turgay Basin and its hydrocarbon accumulations. | Yin Wei Fan Zifei Zheng Junzhang Yin Jiquan Zhang Mingjun Sheng Xiaofeng Guo Jianjun Li Qiyan Lin yaping | 2012 | Petroleum Science2012，9，4： | 11 |
| 7 | Spatial and temporal variations of vegetation cover and the relationships with climate factors in Inner Mongolia based on GIMMS NDVI3g data显示文摘Variation in vegetation cover in Inner Mongolia has been previously studied by the remote sensing data spanning only one decade. However, spatial and temporal variations in vegetation cover based on the newly released GIMMS NDVI3g data spanning nearly thirty years have yet to be analyzed. In this study, we applied the methods of the maximum value composite(MVC) and Pearson's correlation coefficient to analyze the variations of vegetation cover in Inner Mongolia based on GIMMS NDVI3g data spanning from 1982 to 2013. Our results indicate that the normalized difference vegetation index(NDVI) increased at a rate of 0.0003/a during the growing seasons despite of the drier and hotter climate in Inner Mongolia during the past three decades. We also found that vegetation cover in the southern agro-pastoral zone significantly increased, while it significantly decreased in the central Alxa. The variations in vegetation cover were not significant in the eastern and central regions. NDVI is positively correlated with precipitation(r=0.617, P=0.000) and also with air temperature(r=0.425, P=0.015), but the precipitation had a greater effect than the air temperature on the vegetation variations in Inner Mongolia. | TONG Siqin ZHANG Jiquan BAO Yuhai Wurina Terigele Weilisi Lianxiao | 2017 | Journal of Arid Land2017，9，3： | 10 |
| 8 | Study on Hydrothermal Stability and Catalytic Activity of Al-SBA-15 Mesoporous Materials Prepared by Impregnation Method显示文摘The mesoporous Al-SBA-15 zeolite was obtained via impregnation of pure silica-based SBA-15 zeolite with aluminum nitrate.The Al-SBA-15 sample was calcined in air at 800 ℃ for 6 h and hydrothermally treated at near 100 ℃ for 120 h,respectively,and then the thermal and hydrothermal stability of Al-SBA-15 sample was investigated by X-ray diffractometry (XRD),scanning electron microscopy (SEM),transmission electron microscopy (TEM) and nitrogen adsorption and desorption techniques.The Al-SBA-15 sample was also studied by 27 Al nuclear magnetic resonance (27 Al NMR) and ammonia temperature programmed desorption (NH 3-TPD) techniques.In addition,the catalytic activity of Al-SBA-15 zeolite was investigated by the Friedel-Crafts reactions of 2,4-di-tert-butylphenol with cinnamyl alcohol.The test results showed that the thermal and hydrothermal stability of Al-SBA-15 zeolite was better than that of SBA-15 zeo-lite.The Al-SBA-15 zeolite sample prepared by impregnation method exhibits more framework aluminum species and Al-O-Si units.Therefore,the number of the surface hydroxyl groups was reduced,resulting in the stabilization of framework structure ofAl-SBA-15 zeolite.The aluminum species can form weak and medium-strong acid sites with catalytic activity. | Fu Jiquan Li Meng (Center of Chemical Engineering,Beijing Key Lab.,Beijing Institute of Fashion Technology,Beijing 100029) | 2011 | China Petroleum Processing & Petrochemical Technology2011，13，3： | 6 |
| 9 | Emergy-based sustainability assessment of Inner Mongolia显示文摘内部蒙古自治区域(IMAR ) 的综合环境财务从 1987 ~ 2007 与数据基于 emergy 分析在这份报纸被介绍。通过精明的环境、经济的输入和一系列 emergy 指示物,这份报纸讨论 IMAR 资源使用结构,经济状况,和贸易地位。结果证明在 IMAR 使用的超过 85% emergy 从家来源被导出,显示为自足的一个强壮的能力。集中使用的本地非可更新的 emergy,向 IMAR 经济提供大多数驱动力,在 2004 以后在全部的 emergy 使用拿了最大的份额并且在 2007 到达了 58% 。2000 的西方的中国发展计划从 IMAR 迎来了煤和电生产和出口的快速的生长到中国的另外的区域。IMAR 的出口 / 进口 emergy 比率在 2007 到达了 3.46,与出口的煤(3.44 ? 楤敶獲瑩 ? 湡 ? 灳瑡慩? 慰瑴牥 ? 景攠潣祳瑳浥猠牴 ' 壮肭勉硴秤硿爆崫?眠楨档椠 ? 桴 ? 慭湩 ' 獪珷箾 K 映捡潴 ? 湯瘠来瑥瑡潩 ? 慬摮 ' 諡?楤敶獲瑩 ? 湡 ? 灳瑡慩? 楤瑳楲畢楴湯漠 ?题传 | ZHU Luping LI Haitao CHEN Jiquan JOHN Ranjeet LIANG Tao YAN Maochao | 2012 | Journal of Geographical Sciences2012，22，5： | 5 |
| 10 | Genome-wide prediction in a hybrid maize population adapted to Northwest China显示文摘Genome-wide prediction is a promising approach to boost selection gain in hybrid breeding.Our main objective was to evaluate the potential and limits of genome-wide prediction to identify superior hybrid combinations adapted to Northwest China.A total of 490 hybrids derived from crosses among 119 inbred lines from the Shaan A and Shaan B heterotic pattern were used for genome-wide prediction of ten agronomic traits.We tested eight different statistical prediction models considering additive(A)effects and in addition evaluated the impact of dominance(D)and epistasis(E)on the prediction ability.Employing five-fold cross validation,we show that the average prediction ability ranged from 0.386 to 0.794 across traits and models.Six parametric methods,i.e.ridge regression,LASSO,Elastic Net,Bayes B,Bayes C and reproducing kernel Hilbert space(RKHS)approach,displayed a very similar prediction ability for each trait and two non-parametric methods(random forest and support vector machine)had a higher prediction performance for the trait rind penetrometer resistance of the third internode above ground(RPR_TIAG).The models of A+D RKHS and A+D+E RKHS were slightly better for predicting traits with a relatively high non-additive variance.Integrating trait-specific markers into the A+D RKHS model improved the prediction ability of grain yield by 3%,from 0.528 to 0.558.Of all 6328 potential hybrids,selection of the top 44 hybrids would lead to a 6%increase in grain yield compared with Zhengdan 958,a commercially successful hybrid variety.In conclusion,our results substantiate the value of genome-wide prediction for hybrid breeding and suggest dozens of promising single crosses for developing high-yielding hybrids for Northwest China. | Guoliang Li Yuan Dong Yusheng Zhao Xiaokang Tian Tobias Würschum Jiquan Xue Shaojiang Chen Jochen C.Reif Shutu Xu Wenxin Liu | 2020 | The Crop Journal2020，8，5： | 4 |
| 11 | Effect of electronic stimulation at Neiguan(PC 6) acupoint on gene expression of adenosine triphosphate-sensitive potassium channel and protein kinases in rats with myocardial ischemia显示文摘OBJECTIVE:To investigate the effects of electronic stimulation at acupoints Neiguan(PC 6) and Lieque(LU 7) on the gene expression of the adenosine triphosphate(ATP)-Sensitive potassium channel(KATP:Kir6.1,Kir6.2,SUR2 A,and SUR2B) and protein kinases(PKA,PKG,and PKCβ2) in myocardial cells of rats with myocardial ischemia(Ml) induced by isoproterenol(ISO).METHODS:Rats were randomly divided into a control,model,Neiguan(PC 6),Lieque(LU 7),and non-acupoint groups.The Ml model was established by injecting rats with ISO.Electro-acupuncture treatment was given to the acupuncture groups,once a day for 7 days.Gene expression was analyzed with real-time PCR.RESULTS:The gene expression of KATP and protein kinases in the model group was higher than those in the control group(P < 0.05).After acupuncture treatment,the KATP and protein kinase expression levels were significantly lower in the Neiguan(PC 6)and Lieque(LU 7) groups compared with the model group[P < 0.05).The Neiguan(PC 6) group lowered these levels significantly more than that of the Lieque(LU 7) group(P < 0.05).No significant differences were observed between the model and non-acupoint groups(P > 0.05).CONCLUSION:Our findings suggest that electronic needling of Neiguan(PC 6) can both reduce the gene expression of KATP and protein kinases in rats with ISO-induced Ml. | Wang Wei Li Jiquan Meng Xiangyu Chen Yiguo | 2015 | Journal of Traditional Chinese Medicine2015，35，5： | 4 |
| 12 | Understanding livestock production and sustainability of grassland ecosystems in the Asian Dryland Belt显示文摘Background:Companioned by economic development,a dietary shift toward higher meat consumption is seen in developing countries and transitional economies,where the demand for livestock production has been increasing in response to such a dietary shift.In the Asian Dryland Belt,approaches to meet this demand have focused on grazing intensification,cropland conversion for animal feed,and supplemental feeding.With the scarcity of water,energy,and food in the region,a key question is whether or not the current approaches are sustainable.If not,what are the pathways to increase livestock production while protecting the region’s environment for a sustainable future?We provide our reviews and discuss current approaches in response to these dietary shifts and assess their environmental resilience with a focus on the grassland ecosystems in the Asian Dryland Belt.Results:While current approaches alleviate the urgent need for short-term livestock production,they lead to longterm vulnerability in food security.Trade-offs between short gains and long-term losses,between food for humans and for animals,and between agricultural intensification and environmental degradation need to be holistically examined for the sustainable development of the region.A grassland water,energy,and food nexus framework is proposed with specific recommendations to increase livestock production while considering other ecosystem services of the dryland grassland ecosystems in the Asian Dryland Belt.Conclusions:Current practices to increase livestock production are likely to lead to long-term,large-scale ecological degradation of the grassland ecosystems in the Asian Dryland Belt and are thus unsustainable.By considering the trade-offs in the nexus of water,land,food,and livelihoods,sustainable pathways were articulated and recommended.Future pilot studies are needed for validation and adoption. | Jiaguo Qi Xiaoping Xin Ranjeet John Pavel Groisman Jiquan Chen | 2017 | Ecological Processes2017，6，1： | 4 |
| 13 | Preparation and characterization of PVDF-PFSA flat sheet ultrafiltration membranes显示文摘高效 polyvinylidene 氟化物( PVDF )公寓表 ultrafiltration ( UF )膜被一个沉浸 降水阶段倒置方法作为一个毛孔前者并且作为膜和聚乙烯乙二醇的一个吸水的部件用 perfluorosulfonic 酸( PFSA )准备了( M w = 400 )( PEG400 )作为一毛孔形成代理人。木钉的存在和扔的答案的阶段分离上并且在包括他们的孔的 UF 膜的形态学和表演上的 PFSA 的集中的效果,水流动,牛的浆液白朊(BSA ) 的拒绝蛋白质,和犯规反的性质被调查。在浇蒸汽的暴露之上的阶段图,粘性和阶段分离证明 PEG400 和 PFSA 支持了扔的答案的 demixing。扫描电子显微镜学大小证明 PVDF-PFSA 混合膜比本国的 PVDF 膜有更多的 macropores 和指状的结构。PVDF-PFSA 膜(5 wt-%PEG400 + 5 wt-% PFSA ) 有 141.7 L/m2 (25 %) 的纯水流动一?? | Jiquan MA Junhong ZHAO Zhongbin REN Lei LI | 2012 | Frontiers of Chemical Science and Engineering2012，6，3： | 3 |
| 14 | Adsorption of Rhodamine B from Aqueous Solution onto Heat-Activated Sepiolite显示文摘The heat-activated sepiolite,which was prepared using sepiolite by thermal treatment at different temperatures,was used as an absorbent for the removal of rhodamine B(RhB) from aqueous solutions.The structure and morphology of the as-prepared samples were characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM) techniques,respectively.The adsorption capacity of RhB onto the heat-activated sepiolite has been examined with pH,adsorbent dosage,contact time,initial dye concentration,and temperature.Kinetic studies showed that the equilibrium was attained within 40 min,and the kinetic data were well described by the pseudo-second-order kinetic model.Besides,the experimental data(R 2 >0.999) fitted the Freundlich model better than the Langmuir model.The as-prepared sample showed higher adsorption capacity(8.33 mg/g) for the removal of RhB than that of sepiolite,which could be attributed to more adsorption sites caused by appropriate heat treatment.The adsorbent can be well regenerated by calcination at 400 ℃ for 2 h and regenerated sepiolite did not exhibited significant loss of adsorption activity after five recycles. | WANG Jiquan WANG Daojie ZHANG Gaoke GUO Yadan LIU Jin | 2013 | Wuhan University Journal of Natural Sciences2013，18，3： | 3 |
| 15 | Spatial variation of net radiation and its contribution to energy balance closures in grassland ecosystems显示文摘Introduction:Low energy balance closure(EBC)at a particular eddy-covariance flux site has increased the uncertainties of carbon,water,and energy measurements and has thus hampered the urgent research of scaling up and modeling analyses through site combinations in regional or global flux networks.Methods:A series of manipulative experiments were conducted in this study to explore the role of net radiation(Rn)in the EBC in relation to spatial variability of vegetation characteristics,source area,and sensor type in three sites of the Inner Mongolian grassland of northern China.Results:At all three sites,the residual fluxes of EBC peaked consistently at 110 W m^(-2).The spatial variability in net radiation was 19 W m^(-2)(5%of R_(n))during the day and 7 W m^(-2)(16%)at night,with an average of 13 W m^(-2)(11%)from eight plot measurements across the three sites.Large area measurements of Rn significantly increased by 9 W m^(-2)during the day and decreased by 4 W m^(-2)at night in the unclipped treatments.Net radiation decreased by 25 W m^(-2)(6%of Rn)at midday and 81 MJ m^(-2)(6%)during a growing season with heavier regular clipping than that in unclipped treatments.The Rn was lower by 11–21 W m^(-2)(~20–40%of Rn)measured by CNR1 than by Q7.1 at night,while there was only 6 W m^(-2)(~1–2%of Rn)difference during the daytime between these two types of commonly used net radiometers.Conclusions:Overall,the inclusion of the uncertainty in available energy accounted for 65%of the~110 W m^(-2)shortfalls in the lack of closure.Clearly,the unclosed energy balance at these three grassland sites remains significant,with unexplored mechanisms for future research. | Changliang Shao Linghao Li Gang Dong Jiquan Chen | 2014 | Ecological Processes2014，3，1： | 3 |
| 16 | Do green spaces affect the spatiotemporal changes of PM_(2.5) in Nanjing?显示文摘Introduction:Among the most dangerous pollutants is PM_(2.5),which can directly pass through human lungs and move into the blood system.The use of nature-based solutions,such as increased vegetation cover in an urban landscape,is one of the possible solutions for reducing PM_(2.5) concentration.Our study objective was to understand the importance of green spaces in pollution reduction.Methods:Daily PM_(2.5) concentrations were manually collected at nine monitoring stations in Nanjing over a 534-day period from the air quality report of the China National Environmental Monitoring Center(CNEMC)to quantify the spatiotemporal change of PM_(2.5) concentration and its empirical relationship with vegetation and landscape structure in Nanjing.Results:The daily average,minimum,and maximum PM_(2.5) concentrations from the nine stations were 74.0,14.2,and 332.0μg m^(−3),respectively.Out of the 534 days,the days recorded as“excellent”and“good”conditions were found mostly in the spring(30.7%),autumn(25.6%),and summer(24.5%),with only 19.2% of the days in the winter.High PM_(2.5) concentrations exceeding the safe standards of the CNEMC were recorded predominately during the winter(39.3-100.0%).Our hypothesis that green vegetation had the potential to reduce PM_(2.5) concentration was accepted at specific seasons and scales.The PM_(2.5) concentration appeared very highly correlated(R2>0.85)with green cover in spring at 1-2 km scales,highly correlated(R2>0.6)in autumn and winter at 4 km scale,and moderately correlated in summer(R2>0.4)at 2-,5-,and 6-km scales.However,a non-significant correlation between green cover and PM_(2.5) concentration was found when its level was>75μg m^(−3).Across the Nanjing urban landscape,the east and southwest parts had high pollution levels.Conclusions:Although the empirical models seemed significant for spring only,one should not devalue the importance of green vegetation in other seasons because the regulations are often complicated by vegetation,meteorological conditions,and human activities. | Jiquan Chen Liuyan Zhu Peilei Fan Li Tian Raffaele Lafortezza | 2016 | Ecological Processes2016，5，1： | 3 |
| 17 | Correlation and Prediction of Salt Effect on Vapor Liquid Equilibrium for the System of 2-Propanol/Water显示文摘Binary vapor liquid equilibrium (VLE) data were measured for the systems of 2-propanol/ ethanediol and ethanediol/potassium acetate (KAc). VLE data for the system of propanol/ethanediol was tested using thermodynamic consistency test. The average values of Δy1 and Δ P were 0.0776 and 0.1542 kPa, respectively. The above two sets of VLE data were correlated with the NRTL model. Ternary VLE data for the system of 2-propanol/water/KAc was used to obtain the more suitable parameters of NRTL model for binary systems of 2-propanol/KAc and water/KAc (called TDCM). For multicomponent systems, ternary and quaternary, the VLE values predicted by the NRTL model agreed well with the litera-ture data. Influence of KAc, ethanediol, and the mixture of KAc and ethanediol on volatility between 2-propanol and water was investigated respectively. The results showed that the above-mentioned materials and mixture had different influence on volatility between 2-propanol and water. The method for correla-tion and prediction of salt-containing VLE is simple and effective for the said system. | Fu Jiquan | 2008 | China Petroleum Processing & Petrochemical Technology2008，10，2： | 3 |
| 18 | Applications of structural equation modeling(SEM)in ecological studies:an updated review显示文摘Aims:This review was developed to introduce the essential components and variants of structural equation modeling(SEM),synthesize the common issues in SEM applications,and share our views on SEM’s future in ecological research.Methods:We searched the Web of Science on SEM applications in ecological studies from 1999 through 2016 and summarized the potential of SEMs,with a special focus on unexplored uses in ecology.We also analyzed and discussed the common issues with SEM applications in previous publications and presented our view for its future applications.Results:We searched and found 146 relevant publications on SEM applications in ecological studies.We found that five SEM variants had not commenly been applied in ecology,including the latent growth curve model,Bayesian SEM,partial least square SEM,hierarchical SEM,and variable/model selection.We identified ten common issues in SEM applications including strength of causal assumption,specification of feedback loops,selection of models and variables,identification of models,methods of estimation,explanation of latent variables,selection of fit indices,report of results,estimation of sample size,and the fit of model.Conclusions:In previous ecological studies,measurements of latent variables,explanations of model parameters,and reports of key statistics were commonly overlooked,while several advanced uses of SEM had been ignored overall.With the increasing availability of data,the use of SEM holds immense potential for ecologists in the future. | Yi Fan Jiquan Chen Gabriela Shirkey Ranjeet John Susie R.Wu Hogeun Park Changliang Shao | 2016 | Ecological Processes2016，5，1： | 3 |
| 19 | Ultra-light, high flexible and efficient CNTs/Ti3C2-sodium alginate foam for electromagnetic absorption application显示文摘Ultra-light carboxylic functionalized multi-walled carbon nanotubes(CNTs-COOH) and Ti3C2 MXene hybrids modified sodium alginate(CNTs/Ti3C2-SA) based composite foams were prepared through ice-templated freeze-drying method. The microstructure of the synthesized CNTs/Ti3C2 hybrids and CNTs/Ti3C2-SA foams is characterized by the presence of CNTs inserted between MXene layers which prevents their restacking. The resultant CNTs/Ti3C2 hybrids exhibit a unique sandwich-like hierarchical structure. Scanning electron microscopy(SEM) images show that the CNTs/Ti3C2-SA foam exhibits a heterogeneous anisotropic microstructure and CNTs/Ti3C2 hybrids are homogeneously dispersed in the skeleton of the porous foam. In case that the content of the hybrids amounts 40 mg/cm^3, the CNTs/Ti3C2-SA foam possesses excellent electromagnetic(EM) absorption performance with a minimum reflection coefficient(RCmin) as low as-40.0 dB. In case of a sample thickness of 3.95 mm, the RCminreaches-24.4 dB and the effective absorption bandwidth covers the whole X band from 8.2 to 12.4 GHz. A control test shows that, with the same absorbent content, the CNTs/Ti3C2-SA foam exhibits a far better EM performance than that of CNT-free Ti3C2-SA foam. | Xingmin Liu Nan Chai Zhaoju Yu Hailong Xu Xinliang Li Jiquan Liu Xiaowei Yin Ralf Riedel | 2019 | Journal of Materials Science & Technology2019，35，12： | 3 |
| 20 | Analysis of bending on the front end of sheet during hot rolling显示文摘The analysis of bending in finishing rolling was performed. An asymmetrical rolling force model was established, and the upper and lower neutral points were determined. The bending which resulted from the asymmetrical rolling force at the roll gap was studied and related flexibility equations were proposed according to elastic mechanics. Moreover, material mechanics was used to analyze the effects of temperature difference and self-weight on the bending out of the roll gap, and the flexibility equations were constructed. The main factors on bending were summed up, and the bending rule in the rolling could be obtained. In addition practical calculation was made with the production data of ribbon steel from Laiwu Iron & Steel Group Co. Ltd. | Jiquan Sun Haibin Zhang Quancheng Yu | 2006 | Journal of University of Science and Technology Beijing2006，13，1： | 2 |
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