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Geochemistry and heterogeneous accumulation of organic matter in lacustrine basins:A case study of the Eocene Liushagang Formation in the Fushan Depression,South China Sea

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Petroleum Science 2022年第6期19卷 2533-2548页

作者： Bang Zeng mei-jun Li Ning wang Yang Shi Fang-Zheng wang Xin wang State Key Laboratory of Petroleum Resources and Prospecting College of GeosciencesChina University of Petroleum(Beijing)Beijing102249China Key Laboratory of Exploration Technologies for Oil and Gas Resources Ministry of EducationCollege of Resources and EnvironmentYangtze UniversityWuhanHubei430100China Southern Oil Exploration and Development Company Petro ChinaHaikouHainan570216China

Determining the spatial distributions of organic-rich mudstones in hydrocarbon-bearing lacustrine basins is crucial for targeting exploration wells and discovering commercially viable petroleum ***,the strong heterogeneity of sedimentary systems and organic matter(OM)input and accumulations make it difficult to identify OM-rich mudstones in lacustrine *** paper takes the Eocene Liushagang Formation,in the Fushan Depression,South China Sea,as an example to clarify the relationship between the geochemical characteristics of OM and sedimentary facies.A practical approach is proposed for predicting the spatial distribution of good-quality source rocks with high OM *** method used is a combination of logging-based surface fitting and the mudstone to stratum thickness ratio(M/S ratio)of different depositional *** was found that this approach improved TOC content prediction both vertically and *** results suggest that semi-deep lacustrine mudstones with predominantly aquatic organism input,deposited in suboxic-anoxic saline stratified water,contain more preserved OM than other *** this method,limited areas on the southern slope of the lower Liushagang sequence(SQls3),the central part of the Huangtong Sag in the middle Liushagang sequence(SQls2),and the northern part of the Huangtong Sag in the upper Liushagang sequence(SQls1)are determined to be the best-quality source rocks in the development area.

关键词： Organic matter Geochemical characteristics Heterogeneous accumulation Areal distribution Lacustrine basin

Effects of phosphate on the adsorption of glyphosate on three different types of Chinese soils

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Journal of Environmental Sciences 2005年第5期17卷 711-715页

作者： wang Yu-jun ZHOU Dong-mei SUN Rui-juan State Key Laboraton of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 China Graduate School of Chinese Academy of Sciences Beijing 100039 China

Glyphosate （GPS） is a non-selective, post-mergence herbicide that is widely used throughout the world. Due to the similar molecular structures of glyphosate and phosphate, adsorption of glyphosate on soil is easily affected by coexisting phosphate, especially when phosphate is applied at a significant rate in farmland. This paper studied the effects of phosphate on the adsorption of glyphosate on three different types of Chinese soils including two variable charge soils and one permanent charge soil. The results indicated that Freundlich equations used to simulate glyphosate adsorption isotherms gave high correlation coefficients（0.990-0.998） with K values of 2751, 2451 and 166 for the zhuanhong soil（ZH soil, Laterite）, red soil（ RS, Udic Ferrisol） and Wushan paddy soil（WS soil, Anthrosol）, respectively. The more the soil iron and aluminum oxides and clay contained, the more glyphosate adsorbed. The presence of phosphate significantly decreased the adsorption of glyphosate to the soils by competing with glyphosate for adsorption sites of soils. Meanwhile, the effects of phosphate on adsorption of glyphosate on the two variable charge soils were more significant than that on the permanent charge soil. When phosphate and glyphosate were added in the soils in different orders, the adsorption quantities of glyphosate on the soils were different, which followed GPS-soil 〉 GPS-P-soil = GPS-Soil-P 〉 P-soil-GPS, meaning a complex interaction occurred among glyphosate, phosphate and the soils.

关键词： soil glyphosate phosphate competitive adsorption

Recent progress of in-situ characterization of LiNi_(1−x−y)Co_(x)Mn_(y)O_(2) cathodes for lithium metal batteries: A mini review

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Nano Research 2024年第3期17卷 1384-1401页

作者： Huanzhu Lv Xiaoqi Zhu jun mei Yuanhua Xia Bin wang Institute of Fundamental and Frontier Science University of Electronic Science and Technology of ChinaChengdu 611731China Chengdu Development Center of Science and Technology China Academy of Engineering PhysicsChengdu 610200China Key Laboratory of Neutron Physics and Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics(CAEP)Mianyang 621999China

In the context of the gradual popularity of electric vehicles(EVs),the development of lithium battery systems with high energy density and power density is regarded as the foremost way to improve the range of ***_(1-x-y)Co_(x)Mn_(y)O_(2)(NCM)cathodes have been the focus of researchers due to their high energy density,excellent power performance,and low-temperature ***,the elaboration of the decay mechanism of NCM cathode based on lithium metal batteries(LMBs)is still being restricted to the primary *** the past decades,the development and application of advanced in-situ characterization tools have facilitated researchers'understanding of the internal operation mechanism of batteries during charging and *** this minireview,the latest progress of in-situ observation of the NCM cathode by X-ray diffraction(XRD),fourier transform infrared(FT-IR)spectroscopy,Raman spectroscopy,atomic force microscopy(AFM),transmission electron microscope(TEM),optical microscope,and other characterization tools is *** mechanisms of structural degradation,cathode-electrolyte interfaces(CEIs)composition,and dynamic changes of NCM,electrolyte breakdown,and gas production are ***,based on the existing research progress,the opportunities and challenges for future in-situ characterization technology in the study of the mechanism of LMBs are discussed in ***,the purpose of this minireview is to summarize recent work that focuses on the outstanding application of in-situ characterization techniques in the mechanistic study of LMBs,and pointing the way to the future development of high energy density and power density LMBs systems.

关键词： lithium metal batteries(LMBs) In-situ characterization LiNi_(1-x-y)Co_(x)Mn_(y)O_(2)(NCM)

Condensation behavior of gaseous phase during transported in the near-substrate boundary layer of plasma spray-physical vapor deposition

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Journal of Materials Science & Technology 2021年第8期67卷 127-134页

作者： mei-jun Liu Guan-jun Yang State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi'an fiaotong UniversityXi’anShaanxi710049PR China

Plasma spray-physical vapor deposition(PS-PVD)has exhibited the potential ability to prepare columnar structures for advanced thermal barrier coatings(TBCs).The coating structure is nominally affected by operating parameters,but it is controlled by the type of deposition unit actually and *** order to realize the columnar structure deposited by gaseous phase units,the transition behavior of gaseous phase units to clusters must be fundamentally *** work investigated the transport process of gaseous phase units in the PS-PVD near-substrate boundary layer along with the condensation *** Monte Carlo method was used to examine the transport process and condensation behavior of gaseous phase units under different scale boundary *** results show that it is easier to form more numerous larger clusters at the edge of the plasma jet than at the *** on the understanding of the changes in deposition unit caused by the condensation of gaseous phase in the near-substrate boundary layer of PS-PVD,an outlook towards TBCs with different structures is *** it is in good agreement with the experimental data.

关键词： Condensation behavior Transport process Cluster Boundary layer PS-PVD

High-performance chromite by structure stabilization treatment

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Journal of Iron and Steel Research International 2020年第2期27卷 169-179页

作者： En-hui wang Chang Luo jun-hong Chen Xin-mei Hou Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China

Chromite is an important raw material applied in *** have been made to obtain high-performance chromite by adding MgO and Al203 from the viewpoint of structure *** order to explore the effect of Al203 and MgO on the structure,two formulas,i.e.,Mg-rich and Al-rich ones,were *** phase and microstructure development of samples heated in the temperature range of 1200-1600℃ were studied by X-ray diffraction and scanning electron microscopy with energy-dispersive *** and Al203 added have diffused into chromite successfully by heat *** diffuses into chromite,occupying the tetrahedral vacancies caused by the diffusion and oxidation of Fe2+ions to stabilize the ***203 diffuses into the surface layer of chromite,forming spinel-sesquioxide ***-rich sample which has spinel-sesquioxide structure shows better corrosion resistance toward fayalite slag than Mg-rich sample which has single spinel structure by blocking the interdiffusion between Fe^2+ions in fayalite slag and Mg^2+ions in chromite.

关键词： Chromite Structure optimization Corrosion resistance Refractory

Characteristics of the macula in amblyopic eyes by optical coherence tomography

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International Journal of Ophthalmology(English edition) 2012年第2期5卷 172-176页

作者： Xin-mei wang, jun-Wen Zeng State Key Laboratory of Ophthalmology Zhongshan Ophthalmic Center SunYat-sen University Guangzhou 510060 Guangdong Province China Department of Ophthalmology the Fourth Affiliated Hospital Harbin Medical University Harbin 150001 Heilongjiang Province China

AIM: To test the hypothesis that amblyopic neuroretina may have an altered thickness when compared to the normal. METHODS: Twenty-five amblyopic, young patients between the ages of 7 and 11 years old were studied. The interested neuroretina areas are defined into 10 sub-regions according to superior-inferior, nasal-temoral, and pen-para axis, which cross the fovela structure. The thicknesses of ten, defined macular regions were separately measured by optical coherence tomography (OCT) and analyzed by ttest. RESULTS: The average thickness of neuroretina in the exact foveola of the amblyopic eyes is larger than that of normal eyes (P<0.05), but the other nine regions have no significant difference. Interestingly, in both the normal and amblyopic eyes, the temporal area looks thinner than other quadrants (P<0.05). CONCLUSION: Thickness alteration may be associated with amblyopic disorders in young patients. Studying a larger volume of subjects of similar age is required to confirm this observation.

关键词： amblyopia macula flava optical coherence tomography

Chronic colchicine poisoning with neuromyopathy,gastric ulcers and myelosuppression in a gout patient:A case report

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World Journal of Clinical Cases 2021年第35期9卷 11050-11055页

作者： Meng-mei Li jun Teng Yan wang Department of Emergency Qingdao Central HospitalThe Second Affiliated Hospital of Qingdao University Medical CollegeQingdao 266042Shandong ProvinceChina

Colchicine has been widely used as an anti-gout medication over the past ***,it is less commonly used due to its narrow therapeutic range,meaning that its lethal dose is close to its therapeutic *** lethal dose of colchicine is considered to be 0.8 mg/*** chronic colchicine poisoning has multiple manifestations,it poses a challenge in the clinician’s differential ***,the drug was important in treating gout;however,clinical studies are currently underway regarding the use of colchicine in patients with coronavirus disease 2019 as well as its use in coronary artery disease,making this drug more important in clinical *** SUMMARY A 61-year-old male with a history of gout and chronic colchicine intake was admitted to our Emergency Department due to numbness and weakness of the lower *** patient reported a history of colchicine intake for 23 *** thorough examination,he was diagnosed with colchicine poisoning,manifesting as neuromyopathy,multiple gastric ulcers and *** advised him to stop taking colchicine and drinking *** also provided a prescription of lansoprazole and mecobalamin,and then asked him to return to the clinic for *** patient was followed up for 3-mo during which time his gout symptoms were controlled to the point where he was *** Colchicine overdose can mimic the clinical manifestations of several *** easily pay attention to the disease while ignoring the cause of the ***,the patient’s medication history should never be ignored.

关键词： Colchicine poisoning Neuromyopathy Myelosuppression Gastric ulcer Gout Case report

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超声波冰层钻进方法的可行性试验研究

探矿工程（岩土钻掘工程） 2018年第10期45卷 123-126页

作者：王晨赵大军王美艳张书磊王雨李政阳吉林大学建设工程学院吉林长春130026

人类对极地资源的开采和科学研究需要高效、环保的冰层钻探技术,热熔钻进是常用方法之一。为解决热熔钻进技术能量利用率低的问题,本文提出了一种以超声波频率振动进行冰层钻进的方法,分析了超声波振动钻进冰层的机理,通过超声波振动冰... 详细信息

人类对极地资源的开采和科学研究需要高效、环保的冰层钻探技术,热熔钻进是常用方法之一。为解决热熔钻进技术能量利用率低的问题,本文提出了一种以超声波频率振动进行冰层钻进的方法,分析了超声波振动钻进冰层的机理,通过超声波振动冰层钻进效率的计算及室内试验,得出了超声波振动冰层钻进速度大、热效率高的结论,可用于极地冰盖、冰架等冰层的钻进。

关键词：冰层超声波钻进机理室内试验

Effect of Er ion implantation on the physical and electrical properties of TiN/HfO_2 gate stacks on Si substrate

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Science China(Physics,Mechanics & Astronomy) 2013年第7期56卷 1384-1388页

作者： ZHAO mei LIANG RenRong wang Jing XU jun Tsinghua National Laboratory for Information Science and Technology Institute of MicroelectronicsTsinghua University

In this paper, we report the fabrication, electrical and physical characteristics of TiN/HfO2/Si MOS capacitors with erbium （Er） ion implantation. It is demonstrated that the fiat band voltage can be reduced by 0.4 V due to the formation of Er oxide. Moreover, it is observed that the equivalent oxide thickness is thinned down by 0.5 nm because the thickness of interfacial layer is significantly reduced, which is thought to be attributed to the strong binding capability of the implanted Er atoms with oxygen atoms. In addition, cross-sectional transmission electron microscopy experiment shows that the HfO2 layer with Er ion implantation is still amorphous after annealing at a high temperature. This Er ion implantation technique has the potential to be implemented as a band edge metal gate solution for NMOS without a capping layer, and may also satisfy the demand of the EOT reduction in 32 nm technology node.

关键词： erbium ion implantation high-k/metal-gate equivalent oxide thickness fiat band voltage interfacial layer crystallization