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Soil Geochemistry Changes Induced by a Foreign Soil Reconstruction Project in Three Gorges Reservoir Region of China

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Journal of Mountain Science 2015年第6期12卷 1511-1520页

作者： liu Juan WEI Chao-fu LUO You-Jin DU jing College of Resources and Environment Southwest University Chongqing Academy of Agricultural Sciences

Fertile topsoil was added onto the surface of barren slope land in Three Gorges Reservoir region of China in an anthropogenic process known as the foreign soil reconstruction project. The main goal of this paper was to reveal the influence of anthropogenic activities on pedogenic processes and soil classifications. Chemical weathering indices and comparative analysis were applied to discuss changes in geochemical compositions and weathering features of purplish soils(Cambisols) before and after the project. Results showed that:(1) The foreign soil reconstruction project slightly altered the major element composition of topsoil and improved the soil structure. Although the distributions of major elements in the original topsoil, original subsoil, foreign topsoil and newly constructed topsoil were all similar to that in upper continental crust, newly constructed topsoil was the most similar soil.(2) The chemical index of alteration was more sensitive than the weathering index of Parker at indicating chemical weathering status of purplish soil. The chemical weathering status of newly constructed topsoil was higher than that of the original topsoil and lower than that of foreign topsoil.(3) Anthropogenic activities may provide a promising new thought for the anthropogenic soil classification system. The scope and subgroups of Anthrosols should be extended and strengthened. Or there may be a need to combine Anthrosols and Technosols orders to create a new soil order. The results may be used for optimizing soil mellowing engineering activities and enriching the soil classification system.

关键词： Anthropogenic activities Weathering status Foreign soil reconstruction project Pedogenic processes Three Gorges Reservoir region China

Novel ABCB4 mutations in an infertile female with progressive familial intrahepatic cholestasis type 3:A case report

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World Journal of Clinical Cases 2022年第6期10卷 1998-2006页

作者： Tian-fu liu jing-jing He Liang Wang Ling-Yi Zhang Department of Hepatology Lanzhou University Second HospitalLanzhou 730030Gansu ProvinceChina

BACKGROUND Mutations that occur in the ABCB4 gene,which encodes multidrug-resistant protein 3,underlie the occurrence of progressive familial intrahepatic cholestasis type 3(PFIC3).Clinical signs of intrahepatic cholestasis due to gene mutations typically first appear during infancy or *** of PFIC3 occurring in adults are *** SUMMARY This is a case study of a 32-year-old infertile female Chinese patient with a 15-year history of recurrent abnormal liver *** primary clinical signs were elevated levels of alkaline phosphatase andγ-glutamyl *** possible reasons for liver dysfunction were eliminated in this patient,resulting in a diagnosis of *** diagnosis was confirmed using gene detection and histological *** using genetic sequencing analysis indicated the presence of two novel heterozygous mutations in the ABCB4 gene,namely,a 2950C>T;p.A984V mutation(exon 24)and a 667A>G;p.I223V mutation(exon 7).After receiving ursodeoxycholic acid(UDCA)treatment,the patient's liver function indices improved,and she successfully became pregnant by in vitro ***,the patient developed intrahepatic cholestasis of pregnancy in the first ***,treatment with UDCA was safe and *** These novel ABCB4 heterozygous mutations have a variety of clinical *** follow-up is essential for a comprehensive understanding of PFIC3.

关键词： Progressive familial intrahepatic cholestasis type 3 ABCB4 gene Infertility Intrahepatic cholestasis of pregnancy Case report

Ablative Property of C/C–SiC–HfC Composites Prepared via Precursor Infiltration and Pyrolysis under 3,000 °C Oxyacetylene Torch

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Acta Metallurgica Sinica(English Letters) 2014年第6期27卷 981-987页

作者： Min Yan Hejun Li Qiangang fu jing Xie Lei liu Bo Feng C/C Composites Technology Research Center State Key Laboratory of Solidification Processing Northwestern Polytechnical University

C/C–SiC–HfC composites were fabricated via precursor infiltration and pyrolysis using a mixture solution of organic hafnium-containing polymer and polycarbosilane as precursor. The microstructures and the phases of the composites were analyzed by scanning electron microscopy and X-ray diffraction. The ablation resistance of the composites was evaluated under 3,000 °C oxyacetylene torch. After ablation for 120 s, the composites exhibit good ablation properties with the linear and mass ablation rates of 9.1 9 10-4mm/s and 1.30 9 10-3g/s, which are far lower than those of the C/C–SiC composites. The excellent ablative property of the C/C–SiC–HfC composites is resulted from the formation of HfO2 molten layer on the surface of the composites, which could play a positive role in reducing heat transfer and preventing oxygen transport to the underlying carbon substrate.

关键词： C/C–SiC–HfC composite Ablation performance Thermal behavior

Tuning the crystalline and electronic structure of ZrO_(2)via oxygen vacancies and nano-structuring for polysulfides conversion in lithium-sulfur batteries

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Journal of Energy Chemistry 2024年第1期88卷 82-93,I0003页

作者： Shengnan fu Chaowei Hu jing Li Hongtao Cui Yuanyuan liu Kaihua liu Yanzhao Yang Meiri Wang Shandong Key Laboratory for Chemical Engineering and Processing School of Chemistry&Chemical EngineeringYantai UniversityYantai 264000ShandongChina Key Laboratory for Special functional Aggregate Materials of Education Ministry School of Chemistry and Chemical EngineeringShandong UniversityJinan 250100ShandongChina

The recent emergence of tetragonal phases zirconium dioxide(ZrO_(2))with vacancies has generated significant interest as a highly efficient and stable electrocatalyst with potential applications in trapping polysulfides and facilitating rapid conversion in lithium-sulfur batteries(LSBs).However,the reduction of ZrO_(2)is challenging,even under strong reducing atmospheres at high temperatures and ***,the limited presence of oxygen vacancies results in insufficient active sites and reaction interfaces,thereby hindering practical ***,we successfully introduced abundant oxygen vacancies into ZrO_(2)at the nanoscale with the help of carbon nanotubes(CNTs-OH)through hydrogen-etching at lower temperatures and *** introduced oxygen vacancies on ZrO_(2-x)/CNTs-OH can effectively rearrange charge distribution,enhance sulfiphilicity and increase active sites,contributing to high ionic and electronic transfer kinetics,strong binding energy and low redox barriers between polysulfides and ZrO_(2-x).These findings have been experimentally validated and supported by theory *** a result,LSBs assembled with the ZrO_(2-x)/CNTs-OH modified separators demonstrate excellent rate performance,superior cycling stability,and ultra-high sulfur ***,at high sulfur loading of 6 mg cm^(-2),the area capacity is still up to 6.3 mA h cm^(-2).This work provides valuable insights into the structural and functional optimization of electrocatalysts for batteries.

关键词： Lithium-sulfur batteries Oxygen vacancies Zirconium dioxide/carbon nanotubes with–OH Improved redox kinetics Superior cycling stability

Numerical simulation of PAHs sorption/desorption on soil with the influence of Tween80

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Journal of Environmental Sciences 2006年第4期18卷 716-720页

作者： CHEN jing WANG Xue-jun HUJun-dong XU fu-liu TAO Shu College of Environmental Science MOE Laboratory of Earth Surface Process Peking University Beijing 100871 China

In this paper, the influences of inionic surfactant Tween80 on polycyclic aromatic hydrocarbons （PAHs） sorption/desorption on artificially contaminated soil were studied, and γ model was applied to simulate the influences. Results showed that, with the use of Tween 80, the sorption behaviors of PAHs on soil altered significantly. Adsorbed Tween 80 increased the sorption amount of PAHs while the dissolved Tween80 increased the apparent solubility of PAHs. These two processes exert influences on the sorption coefficient of PAHs in soil-water system, which can be depicted by apparent sorption coefficient. The partition coefficients （the soil/water partition coefficient of PAHs and surfactants obtained fxom sorption experiments） and statistical parameters used in the amended γ model were obtained in independent experiments. With these parameters, the γ model could provide a satisfactory independent prediction of PAHs release from soil to aqueous phase at two surfactant concentrations.

关键词： Tween80 PAHs soil sorption/desorption γ model

Investigating Genotype 1a HCV Drug Resistance in NS5A Region via Bayesian Inference

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Tsinghua Science and Technology 2015年第5期20卷 484-490页

作者： Yao fu Gang Chen Lizhi fu jing Zhang bioinformatics scientist in Bina Technologies Roche Redwood City CA 94065 USA the financial service industry Department of Mathematics & Statistics Georgia State University the Department of Statistics Yale University

Hepatitis C virus（HCV） treatment is on the cutting edge of medicine. Due to the high rate of mutations and low fidelity of HCV replication, resistant strains quickly become dominant in a viral population under the selection pressure of a drug. In this paper, we examined the drug resistance mechanism in the NS5 A region of genotype1 a HCV virus by comparing the sequence data from interferon-ribavirin treated and untreated patients. To find the drug resistance difference, we used innovative Bayesian probability models to detect mutation combinations and inferred detailed interaction structures of these mutations. We aim to provide reference to drug design and mutation mechanism understanding through our work.

关键词： Bayesian model Hepatitis C virus(HCV) drug resistance NS5A

Effect of normalization on texture evolution of 0.2-mm-thick thingauge non-oriented electrical steels with strong η-fiber textures

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Journal of Iron and Steel Research International 2019年第11期26卷 1219-1227页

作者： jing Qin De-fu liu Ye Yue Hong-jin Zhao Chao-bin Lai School of Materials Science and Engineering Jiangxi University of Science and TechnologyGanzhou 341000JiangxiChina School of Metallurgy and Chemical Engineering Jiangxi University of Science and TechnologyGanzhou 341000JiangxiChina

Thin-gauge non-oriented electrical steel sheets of 0.2 mm in thickness with high magnetic induction and low core loss were produced by a two-stage cold-rolling method with and without normalization *** through-process texture evolutions of the two processes were compared and studied by means of X-ray diffractometer and electron backscattered *** showed that excellent magnetic properties were attributed to strong η-fiber recrystallization texture in the final *** γ-fiber-oriented grains after intermediate annealing and medium cold-rolling reduction were considered key factors to obtain a strong γ-fiber texture given that a large number of shear bands within the γ-fiber deformed matrix provided dominant nucleation sites for η-fiber-oriented *** normalization annealing after hot rolling was favorable for the retention of cube texture,thereby decreasing the magnetic anisotropy of thin-gauge non-oriented electrical steels.

关键词： Thin-gauge non-oriented electrical steel Two-stage cold-rolling method Microstructure Texture evolution Magnetic property

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现象学视域下农村集体经济的本质再诠释

西北农林科技大学学报（社会科学版） 2025年第1期25卷 60-68页

作者：李林峰刘启明饶静中国农业大学人文与发展学院北京100083 中共江西省委党校江西经济社会发展战略研究所南昌330108

鉴于当前政策、理论和实践领域对农村集体经济本质缺乏共识,本研究采用胡塞尔现象学的方法论,特别是一般现象学还原、本质还原和先验还原等技术,系统地审视了“农村集体经济应该是什么”这一核心议题。通过全面梳理当前对农村集体经济... 详细信息

鉴于当前政策、理论和实践领域对农村集体经济本质缺乏共识,本研究采用胡塞尔现象学的方法论,特别是一般现象学还原、本质还原和先验还原等技术,系统地审视了“农村集体经济应该是什么”这一核心议题。通过全面梳理当前对农村集体经济的多维认知,从而为其本质探索提供更为宽广的视角。在搁置既有认识的基础上,采用更加开放的态度识别出土地集体所有制是农村集体经济的共相,这一发现为理解其本质提供了关键线索。进一步从源初意向性与结构性剖析农村集体经济,揭示其本质在于注重公正,并凸显了其深厚的社会性和伦理性。这种本体论式反思既验证了马克思主义理论关于集体所有制经济的科学性及其生命力,更展示了中国农村集体经济独有的文化烙印。同时,跨学科的研究方法或为理解农村集体经济提供了新的视角,为推动其持续健康发展提供有益的思考。

关键词：农村集体经济现象学本质

Folic Acid Self-Assembly Enabling Manganese Single-Atom Electrocatalyst for Selective Nitrogen Reduction to Ammonia

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Nano-Micro Letters 2021年第8期13卷 163-174页

作者： Xuewan Wang Dan Wu Suyun liu Jiujun Zhang Xian-Zhu fu jing-Li Luo Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Institute for Sustainable Energy College of SciencesShanghai UniversityShanghai 200444People’s Republic of China

Efficient and robust single-atom catalysts(SACs)based on cheap and earth-abundant elements are highly desirable for electrochemical reduction of nitrogen to ammonia(NRR)under ambient ***,for the first time,a Mn-N-C SAC consisting of isolated manganese atomic sites on ultrathin carbon nanosheets is developed via a template-free folic acid self-assembly *** spontaneous molecular partial dissociation enables a facile fabrication process without being plagued by metal atom *** to well-exposed atomic Mn active sites anchored on two-dimensional conductive carbon matrix,the catalyst exhibits excellent activity for NRR with high activity and selectivity,achieving a high Faradaic efficiency of 32.02%for ammonia synthesis at−0.45 V versus reversible hydrogen *** functional theory calculations unveil the crucial role of atomic Mn sites in promoting N_(2) adsorption,activation and selective reduction to NH_(3) by the distal *** work provides a simple synthesis process for Mn-N-C SAC and a good platform for understanding the structure-activity relationship of atomic Mn sites.

关键词： Folic acid self-assembly N-doped carbon sheet Manganese single-atom catalyst Electrocatalysis Nitrogen reduction