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Influence of mineral species on oil-soil interfacial interaction in petroleum-contaminated soils

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Chinese Journal of Chemical Engineering 2023年第9期61卷 147-156页

作者： Yang Yang Dandan Liu xing liang Xiaobing Li National Center for Coal Preparation and Purification Engineering Research China University of Mining and TechnologyXuzhou 221116China School of Chemical Engineering and Technology China University of Mining and TechnologyXuzhou 221116China

The mineral species in soils vary in a wide variety of places,thus resulting in the petroleumcontaminated soil(PCS)with complex ***,the research on the effect of mineral species on oil-soil interactions in PCS takes on a critical *** this study,the desorption and adsorption behaviors of aromatic hydrocarbons(Ar)on two minerals surfaces were ***,the interfacial forces between minerals and Ar were studied and the sources of these forces were ***,molecular dynamics(MD)simulations were conducted to gain insight into the interfacial interaction *** revealed by the results of this study,in comparison with Qs-Ar(quartz sand,Qs),Mnt-Ar(montmorillonite,Mnt)contaminants required higher temperature and activation energies for thermal desorption(201.95 kJ·mol^(-1)vs.127.82 kJ·mol^(-1))The above difference was generated since the adhesive forces between Ar and Mnt surfaces were greater than those between Ar and *** indicated by the analysis of the adhesion force sources,the van der Waals forces were responsible for facilitating oil adhesion to mineral surfaces,even though the electrostatic force prevented oil-mineral ***,the hydrophobic forces facilitated adhesion in 3 *** MD results demonstrated that compared with the Qs system,there existed larger binding energies between Ar and Mnt,a lower diffusion coefficient for Ar on the Mnt surface,as well as more significant adsorption of Ar on *** general,the different mineral species affect the strength of the interaction at the oil-soil interface,which is a guideline for proposing targeted oil-soil separation measures.

关键词： Oil-soil interface Thermal desorption Isothermal adsorption Extended-DLVO(EDLVO) Molecular dynamics

Geomorphologic Study of Anhui Section of Changjiang River Using Landsat TM Image

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Chinese Geographical Science 2007年第3期17卷 250-256页

作者： Qi Yueming Tan Haiqiao liang xing Institue of Earth Resources and Geosciences China University of Mining and TechnologyXuzhou221008China Institue of Environment China University of GeosciencesWuhan430074China

Fluvial landforms in the Anhui section of the Changjiang(Yangtze)River are often considered as the main factors for frequent *** is these special landforms that influence the channel changes of the Changjiang *** Landsat TM image of 2000,this paper conducted a series of image processing,including principal component analysis,multi-spectral composition,gray value statistics,and spectral analysis of ground *** it got a new interpretation map of different kinds of fluvial landforms of the Changjiang River in the Anhui *** on the interpretation mentioned above,the paper analyzes the distribution and characteristics of such typical landforms as terraces,floodplains and battures,and their functions on the changes of river *** results show a consistence with the earlier conclusion that the Anhui section of the Changjiang River tends to deflect gradually toward south,which provides more implications for further study on the geomorphologic evolution of the river channel.

关键词： Anhui section of the Changjiang River fluvial landform remote sensing Optimum Index Factor(OIF) Principal Component Analysis(PCA)

Using EARTH Model to Estimate Groundwater Recharge at Five Representative Zones in the Hebei Plain, China

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Journal of Earth Science 2015年第3期26卷 425-434页

作者： Bingguo Wang Menggui Jin xing liang School of Environmental Studies China University of Geosciences State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences

Accurate estimation of groundwater recharge is essential for efficient and sustainable groundwater management in many semi-arid regions. In this paper, a lumped parameter model（EARTH） was established to simulate the recharge rate and recharge process in typical areas by the observation datum of weather, soil water and groundwater synthetically, and the spatial and temporal variation law of groundwater recharge in the Hebei Plain was revealed. The mean annual recharge rates at LQ, LC, HS, DZ and CZ representative zones are 220.1, 196.7, 34.1, 141.0 and 188.0 mm/a and the recharge coefficients are 26.5%, 22.3%, 7.2%, 20.4%, and 22.0%, respectively. Recharge rate and recharge coefficient are gradually reduced from piedmont plain to coastal plain. Groundwater recharge appears as only yearly waves, with higher frequency components of the input series filtered by the deep complicated unsaturated zone（such as LC）. While at other zones, groundwater recharge series strongly dependent on the daily rainfall and irrigation because of the shallow water table or coarse lithology.

关键词： EARTH model groundwater recharge Hebei Plain

Palladium-catalysed diastereodivergent inverse- electron-demand oxa-Diels–Alder reactions of in situ formed cyclopentadienones via ligand- control

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Organic Chemistry Frontiers 2022年第5期9卷 1364-1369页

作者： xing-xing Yang xing-liang Zhao Qin Ouyang Wei Du Ying-Chun Chen Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province and Sichuan Research Center for Drug Precision Industrial TechnologyWest China School of PharmacySichuan UniversityChengdu 610041China College of Pharmacy Third Military Medical UniversityShapingbaChongqing 400038China

Here we report Pd(0)-catalysed asymmetric inverse-electron-demand oxa-Diels–Alder reactions between the carbonates of 4-hydroxy-2-cyclopentenones andα-cyano chalcones by in situ generating η^(2)-Pd(0)-cyclopentadienone complexes as HOMO-raised dienophiles,and diastereodivergent synthesis could be realised by employing a bifunctional monophosphine ligand from a chiral aminoalcohol or a proline-derived bisphosphine ligand.

关键词： inverse Palladium stereo

Dynamic Analysis of A Deep-Water Compliant Vertical Access Riser with A Variable Length During Installation

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China Ocean Engineering 2023年第4期37卷 568-579页

作者： liang Wei-xing LOU Min WANG Yu ZHANG Rui School of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580China

Compliant vertical access risers(CVAR)have broad application prospects in deep-water oil and gas ***,the mechanical behaviors of the CVAR with a variable length during installation remains *** address this issue,based on the flexible segment method,a model of CVAR with a variable length during installation is established in this study,which is verified by the comparison with commercial ***,the mechanical behaviors of CVAR during installation are *** results reveal that the CVAR configuration is significantly affected by the buoyancy *** streamwise displacement of CVAR increases with the increase of current *** the BOP weight is insuffcient,obvious upbending is observed in the lower region and transition region,leading to local *** the platform moves in the opposite direction to the current,the maximum stress is larger than that of the scenario when the platform moves in the same direction as the current.

关键词： compliant vertical access riser installation analysis dynamic performance variable length

DYNAMIC OPTICAL COHERENCE ELASTOGRAPHY:A REVIEW

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Journal of Innovative Optical Health Sciences 2010年第4期3卷 221-233页

作者： xing liang VASILICA CRECEA STEPHEN A.BOPPART Department of Electrical and Computer Engineering Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign UrbanaIL61801USA Department of Physics Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign UrbanaIL61801USA Departments of Electrical and Computer Engineering Bioengineering and Internal MedicineBeckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign UrbanaIL61801USA Biophotonics Imaging Laboratory Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign UrbanaIL61801USA

With the development of optical coherence tomography,the application optical coherence elastography(OCE)has gained more and more attention in biomechanics for its unique features including micron-scale resolution,real-time processing,and non-invasive *** this review,one group of OCE techniques,namely dynamic OCE,are introduced and discussed including external dynamic OCE mapping and imaging of ex vivo breast tumor,external dynamic OCE measurement of in vivo human skin,and internal dynamic OCE including acoustomotive OCE and magnetomotive *** techniques overcame some of the major drawbacks of traditional static OCE,and broadened the OCE application *** by scientific needs to engineer new quantitative methods that utilize the high micron-scale resolution achievable with optics,results of biomechanical properties were obtained from biological *** results suggest potential diagnostic and therapeutic clinical *** from these studies also help our understanding of the relationship between biomechanical variations and functional tissue changes in biological systems.

关键词： Optical coherence tomography optical coherence elastography biomechanics tissue characterization scattering phase measurements

Spatiotemporal Variability in Extreme Temperature Events in an Arid-Semiarid Region of China and Their Teleconnections with Large-Scale Atmospheric Circulation

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Journal of Earth Science 2023年第4期34卷 1201-1217页

作者： Lin Zhang Yanfeng Liu Menggui Jin xing liang State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430078China School of Environmental Studies China University of GeosciencesWuhan 430078China

With a warming climate,temperature extremes have been a main global issue in recent decades due to their potential influence on the sustainable development of human life and natural *** this study,12 indicators of extreme temperature events are used to evaluate the spatiotemporal distribution,periodic structure and teleconnections with large-scale atmospheric circulation in Xinjiang,Northwest China by combining wavelet coherence(WTC) analysis based on continuous wavelet transform(CWT) analysis with the sequential Mann-Kendall *** find that over the past six decades,the climate in Xinjiang has become warmer and has suffered from increases in the frequency of warm extremes and decreases in the frequency of cold *** extremes have mainly occurred in the southern Tianshan Mountains surrounding the Tarim Basin and western part of the Taklamakan Desert,and cold extremes have primarily occurred in the southwestern Altai Mountains and northern foot of the Tianshan *** temperature events,including warm extremes,cold extremes,and other temperature indices,have significant interannual variability,with the main oscillation periods at smaller(2–4-year band),intermediate(4–7-year band),and greater time scales in recent ***,cold-extreme indices,including frost days,cool days,and cool nights all show a clear changepoint during 1990–1997 at the 95% confidence level,and both ice days and cold spell duration indicator have a potential changepoint during 1981–***,the changing points for warmextreme indices are detected during 1992–*** temperature variables are significantly correlated with the EI Ni?o-Southern Oscillation(ENSO) and Arctic Oscillation(AO),but less well correlated with the Pacific Decadal Oscillation(PDO).The phase difference in the WTC spectra is not uniform between temperature extremes and climatic *** findings will have important implications for local governments in taking effective measu

关键词： extreme temperature events spatiotemporal variability large-scale atmospheric circu-lation inland arid-semiarid region wavelet analysis climate change.

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高原铁路某特长隧道独头掘进通风技术分析

山西建筑 2025年第1期51卷 150-153页

作者：梁星刘明杨琨曾强中铁隧道局集团一处有限公司重庆404100

文章面向高原铁路特长隧道,开展通风技术研究,提出一种基于避车洞通风技术、人行通道通风技术的蓄风房通风策略。基于高原铁路特长隧道通风案例,研究了蓄风房技术。文中研究成果供我国高原铁路特长隧道建设单位、运营单位加以参考、借鉴... 详细信息

文章面向高原铁路特长隧道,开展通风技术研究,提出一种基于避车洞通风技术、人行通道通风技术的蓄风房通风策略。基于高原铁路特长隧道通风案例,研究了蓄风房技术。文中研究成果供我国高原铁路特长隧道建设单位、运营单位加以参考、借鉴,以保证特长隧道通风性能,满足相关制度、规范对高原铁路特长隧道的环境要求,并实现铁路通风的节能效果。

关键词：高原铁路特长隧道蓄风房避车洞

Electrooxidation-Induced C(sp^(3))-H/C(sp^(2))-H Radical-Radical Cross-Coupling between Xanthanes and Electron-Rich Arenes

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Chinese Journal of Chemistry 2022年第12期40卷 1422-1428页

作者： Yuwei liang Linbin Niu xing-An liang Shengchun Wang Pengjie Wang Aiwen Lei College of Chemistry and Molecular Sciences Institute for Advanced Studies(IAS)Wuhan UniversityWuhanHubei 430072China

The arylation of C(sp^(3))-H bonds has been a priority research topic in organic *** reactions have been the powerful methods for C(sp^(3))-C(sp^(2))bonds *** its mature development,the scopes of arenes are usually suitable for elec-tron-deficient heterocyclic compounds,rather than electron-rich ***,we report an electrooxidation-induced alkylation of electron-rich arenes with H_(2) evolution under exogenous oxidant-free conditions,avoiding the utilization of metal *** pro-tocol is well performed with various electron-rich aniline derivatives and nitrogen-containing heterocyclic *** anticipate that this electro-oxidative C(sp^(3))-H arylation represents an important expansion for the classic arenes alkylation,thereby proving an attractive strategy for the developments of radical cross-coupling chemistry.

关键词： Electrochemistry C-H activation C-C coupling C(sp^(2))-H alkylation Electron-rich arenes