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Geodesy and Geodynamics 2019年第4期10卷 265-275页

作者： wenjin chen Robert Tenzer School of Geomatics Science and Technology Nanjing Tech UniversityNanjingChina Department of Land Surveying and Geo-Informatics Hong Kong Polytechnic UniversityHong KongChina

The average density of 3300 kg m-3 is often attributed for the asthenosphere. In this study, we inspect this value by estimating the average value of the(upper) asthenosphere based on applying the gravimetric forward modelling of major known lithospheric density structures. The LITHO1.0 global seismic model of the lithospheric density structure is used for this purpose, while considering that the lithosphere-asthenosphere boundary(LAB) is rheological, conventionally taken at the 1300C isotherm,above which the mantle behaves in a rigid fashion and below which it behaves in a ductile *** to our result, the average density of the upper asthenosphere is roughly 3400 kg m-3. This density value closely agrees with the corresponding average value 3371 kg m-3 computed based on an empirical density model provided in the Preliminary Reference Earth Model(PREM), while using the LITHO1.0 LAB depth data. We also demonstrate that the sub-lithospheric mantle gravity map exhibits mainly a thermal signature. The most prominent features in this gravity map are mid-oceanic spearing ridges marked by gravity lows, while oceanic subductions in the West Pacific are characterized by the most pronounced gravity highs.

关键词： Asthenosphere Density Forward modelling Gravity Lithosphere

Effect of Constituent Core-sizes on Microstructure and Dielectric Properties of BaTiO_3@(0.6BaTiO_3-0.4BiAlO_3) Core-Shell Material

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Journal of Wuhan University of Technology(Materials Science) 2018年第3期33卷 589-597页

作者： APPIAH Millicent 郝华 chen wenjin chen cheng YAO Zhonghua CAO Minghe LIU Hanxing State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Material Science and EngineeringWuhan University of Technology International School of Materials Science and Engineering Wuhan University of Technology

The fundamental characteristics of varied initial core-sizes of Ba Ti O3（BT） and its influential role on the morphology and dielectric properties of Ba Ti O3@0.6 Ba Ti O3-0.4 Bi Al O3（BT@0.6 BT-0.4 BA） ceramic samples were studied. Alkoxide sol-precipitation method was adopted as revised chemical route to synthesize the constituent ＂core＂ BT powders in a dispersed phase, whereas the distinctive initial nano-sized particles were affected by the pre-calcination temperatures（600-900 ℃）.The microstructure of the uncoated BT ceramics revealed an exaggerated grain growth with an optimized dielectric constant（ε（max）〉9 000） whilst the coated ceramics behaved otherwise（grain growth inhibited） when sintered at an elevated temperature. Regardless of the previously studied solubility limit（about 0.1%） of BT-BA samples, BT@0.6 BT-0.4 BA maintained a maximum dielectric constant（ε（max）） ranging from 1 592 to 1 708 and tan δ less than 2% under a unit mole ratio at room temperature. In view of all these analyses, the initial nanometer sizes of the as-prepared BT-core powders combined with the increase effect of cation substitutions of Bi^（3＋） and Al^（3＋） in the shell content, induced the diffuse transition phase of BT@0.6 BT-0.4 BA composition.

关键词： MLCCs core-shell Alkoxide sol-precipitation relaxor grain boundary segregation

Fe-N co-doped coral-like hollow carbon shell toward boosting peroxymonosulfate activation for efficient degradation of tetracycline: Singlet oxygen-dominated non-radical pathway

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Journal of Environmental Sciences 2023年第4期126卷 470-482页

作者： wenjin chen Jin Huang Yaqian Shen Ke Zhu Lele Lei Hongmei He Yushi Ai School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China

Fe-N co-doped coral-like hollow carbon shell (Fe-N-CS) was synthesized via a simply impregnation-pyrolysis *** Fe-N-CS showed an excellent ability for activating peroxymonosulfate (PMS),which could degrade about 93.74%tetracycline (20 mg/L) in 12 *** Fe-N-CS/PMS system exhibited a good anti-interference capacity of various pH,inorganic anions,HA and different water *** importantly,the Fe nanoparticles were anchored uniformly in the carbon layer,effectively limiting the metal *** quenching tests and electron spin resonance (ESR) manifested that non-radical singlet oxygen (1O_(2))was the main reactive oxygen species (ROS) for TC *** mechanism study showed that Fe nanoparticles,defect and graphite N played a key role in activating PMS to produce ***,three probable degradation pathways were proposed by using LC-MS ***,this work had a new insight for the synthesis of heterogeneous Fe-N-C catalysts in the advanced oxidation process based on PMS.

关键词： Fe-N co-doped Carbon shells Peroxymonosulfate Tetracycline Singlet oxygen

Tetracycline removal via adsorption and metal-free catalysis with 3D macroscopic N-doped porous carbon nanosheets:Non-radical mechanism and degradation pathway

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Journal of Environmental Sciences 2022年第1期34卷 351-366页

作者： Yaqian Shen Ke Zhu Dongdong He Jin Huang Hongmei He Lele Lei wenjin chen School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China

Recently,metal-based carbon materials have been verified to be an effective persulfate activator,but secondary pollution caused by metal leaching is ***,a green metalfree 3D macroscopic N-doped porous carbon nanosheets(NPCN)was synthesized *** obtained NPCN showed high adsorption capacity of tetracycline(TC)and excellent persulfate(PS)activation ability,especially when calcined at 700℃(NPCN-700).The maximum adsorption capacity of NPCN-700 was 121.51 mg/g by H-bonds ***,the adsorption process followed pseudo-second-order kinetics model and Langmuir adsorption *** large specific surface area(365.27 mg/g)and hierarchical porous structure of NPCN-700 reduced the mass transfer resistance and increased the adsorption *** 96.39%of TC was removed after adding *** effective adsorption of the catalyst greatly shortened the time for the target organic molecules to migrate to the ***,the NPCN-700 demonstrated high reusability with the TC removal rate of 80.23%after 4 *** experiment and electron paramagnetic resonance(EPR)test confirmed the non-radical mechanism dominated by ^(1)O_(2).More importantly,the C=O groups,defects and Graphitic N acted as active sites to generate ^(1)O_(2).Correspondingly,electrochemical measurement revealed the direct electron transfer pathway of TC ***,multiple degradation intermediates were recognized by the LC-MS measurement and three possible degradation pathways were ***,the prepared NPCN had excellent application prospects for removal of antibiotics due to its remarkable adsorption and catalytic degradation capabilities.

关键词： 3D macroscopic N-doped porous carbon nanosheets Tetracycline Adsorption and metal-free catalysis Singlet oxygen

Analysis of the personalized treatment and the relevant prognostic factors in children with medulloblastoma

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BIOCELL 2023年第5期47卷 1065-1073页

作者： LIHUA chen HONGTIAN ZHANG YONG XIA KAI SUN wenjin chen RUXIANG XU Department of Neurosurgery Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu610072China Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital Chengdu610072China

Purpose:The present study summarized cases of children(n=32)with medulloblastoma(MB)who were treated using stratified therapy based on risk grading and also discussed the factors affecting ***:According to the risk stratification criteria,the cases were divided into the following four risk groups:low,standard,high,and very *** 5-year overall survival(OS)and progression-free survival(PFS)rates were ***,the effects on the prognosis of tumor size,tumor stage,degree of resection,treatment mode,metastatic recurrence,molecular typing,and risk stratification were ***:In the present study,following surgery,3 cases abandoned radiotherapy(RT)and chemotherapy(CHT),7 cases(0.05).Favorable prognostic factors in the low-and standard-risk groups were stage M0,wingless-type MB,postoperative RT combined with CHT,no postoperative recurrence,age≥3 years,and total tumor ***:Personalized treatment strategies based on the risk stratification of MB and postoperative stratified comprehensive treatment could help improve the prognosis for MB.

关键词： Medulloblastoma in children Risk stratification Individualized therapy Prognostic influencing factor

Therapeutic efficacy of traditional Chinese exercises and massage treatment on lumbar instability:a randomized controlled trial

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Journal of Traditional Chinese Medicine 2020年第6期40卷 1026-1032页

作者： chen wenjin Wang Jianwei Zhou Zhiyi Ren Yide Hua Zhen Yan Zheng Zhang Yafeng Department of Orthopedics Wuxi Affiliated Hospital of Nanjing University of Chinese MedicineJiangsu 214071China Wuxi Huishan Traditional Chinese Medicine hospital Jiangsu 214071China College of Information Science and Engineering Huaqiao University Fujian 361021China

OBJECTIVE:To determine the effect of traditional Chinese exercises combined with traditional Chinese massage on lumbar ***:Seventy patients with lumbar instability were randomly divided into experimental group and control *** experimental group was treated with traditional Chinese exercises combined with traditional Chinese massage,while the control group was only treated with traditional Chinese *** Japanese Orthopaedic Association(JOA)scores,Oswestry Disability Index(ODI)and dynamic imaging indexes were used to assess treatment ***:After 8 weeks of treatment,the JOA scores of both groups were significantly higher than those before treatment(P<0.05),while ODI was significantly lower(P<0.05).In addition,compared with the control group,the JOA score of the experimental group was significantly increased(P<0.05),and the ODI was significantly decreased(P<0.05).Besides,the dynamic imaging indexes of patients with lumbar instability significantly changed after *** lumbar vertebral laxity was significantly decreased(P<0.05)than those before ***:The traditional Chinese exercises and massage may improve the symptoms of lumbar instability,and traditional Chinese exercises combined with massage treatment may be better than exercises alone.

关键词： Joint instability Exercise therapy Massage Medicine Chinese traditional Randomized controlled trial

Free-boundary plasma equilibria with toroidal plasma flows

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Plasma Science and Technology 2022年第3期24卷 61-70页

作者： wenjin chen Zhiwei MA Haowei ZHANG Wei ZHANG Longwen YAN Institute for Fusion Theory and Simulation.Zhejiang University Hangzhou 310027People's Republic of China Southwestern Institute of Physics Chengdu 610225People's Republic of China

Magnetohydrodynamic equilibrium schemes with toroidal plasma flows and scrape-off layer are developed for the'divertor-type'and'limiter-type'free boundaries in the tokamak cylindrical *** a toroidal plasma flow,the flux functions are considerably different under the isentropic and isothermal *** effects of the toroidal flow on the magnetic axis shift are *** a high beta plasma,the magnetic shifts due to the toroidal flow are almost the same for both the isentropic and isothermal cases and are about 0.04a_(0)(a_(0)is the minor radius)for M_(0)=0.2(the toroidal Alfvén Mach number on the magnetic axis).In addition,the X-point is slightly shifted upward by 0.0125a_(0).But the magnetic axis and the X-point shift due to the toroidal flow may be neglected because M_(0) is usually less than 0.05 in a real *** effects of the toroidal flow on the plasma parameters are also *** high toroidal flow shifts the plasma outward due to the centrifugal *** profiles are noticeable different because the plasma temperature is a flux function in the isothermal case.

关键词： tokamak plasma plasma flow equilibria

Superior trichloroethylene removal from water by sulfide-modified nanoscale zero-valent iron/graphene aerogel composite

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Journal of Environmental Sciences 2020年第2期32卷 90-102页

作者： Qiong Bin Bin Lin Ke Zhu Yaqian Shen Yuanyuan Man Boyang Wang Changfei Lai wenjin chen School of Resources and Environment University of Electronic Science and Technology of ChinaChengdu 610054China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 610054China

Sulfide-modified nanoscale zero-valent iron(S-nZVI) is a promising material for removal of organic pollutants from water, but S-nZVI nanoparticles(NPs) easily agglomerate and have poor contact with organic ***, we propose a new S-nZVI/graphene aerogel(S-nZVI/GA) composite which exhibits superior removal capability for trichloroethylene(TCE) from ***-dimensional porous graphene aerogel(GA) can improve the efficiency of electron transport, enhance the adsorption of organic pollutants and restrain the agglomeration of the core-shell S-nZVI *** TCE removal rates of Fe S, nZVI, GA and S-nZVI were 27.8%, 42%, 63% and 75% in 2 hr, ***, TCE was completely removed within 50 min by S-nZVI/*** TCE removal rate increased with increasing p H and temperature, and TCE removal followed the pseudo-first-order kinetic *** results demonstrate the great potential of S-nZVI/GA composite as a low-cost,easily separated and superior monolithic adsorbent for removal of organic pollutants.

关键词： Organic pollutant removal Trichloroethylene (TCE) Sulfide-modified nanoscale zero-valent iron Graphene aerogel Nanocomposite

Peroxymonosulfate activation by Fe-N-S co-doped tremella-like carbocatalyst for degradation of bisphenol A: Synergistic effect of pyridine N, Fe-Nx, thiophene S

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Journal of Environmental Sciences 2023年第7期129卷 213-228页

作者： wenjin chen Lele Lei Ke Zhu Dongdong He Hongmei He Xiulan Li Yumeng Wang Jin Huang Yushi Ai School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials Chengdu 611731China School of Medicine University of Electronic Science and Technology of ChinaChengdu 611731China

Bisphenol A(BPA)has received increasing attention due to its long-term industrial application and persistence in environmental ***-based carbon catalyst activation of peroxymonosulfate(PMS)shows a good prospect for effective elimination of recalcitrant contaminants in ***,considering the problem about the leaching of iron ions and the optimization of heteroatoms doping,the iron,nitrogen and sulfur co-doped tremellalike carbon catalyst(Fe-NS@C)was rationally designed using very little iron,S-C_(3)N_(4) and low-cost chitosan(CS)via the impregnation-calcination *** as-prepared Fe-NS@C exhibited excellent performance for complete removal of BPA(20 mg/L)by activating PMS with the high kinetic constant(1.492 min^(−1))in 15 ***,the Fe-NS@C/PMS system not only possessed wide pH adaptation and high resistance to environmental interference,but also maintained an excellent degradation efficiency on different ***,increased S-C_(3)N_(4) doping amount modulated the contents of different N species in Fe-NS@C,and the catalytic activity of Fe-NS@C-1-x was visibly enhanced with increasing SC_(3)N_(4) contents,verifying pyridine N and Fe-Nx as main active sites in the ***,thiophene sulfur(C-S-C)as active sites played an auxiliary ***,quenching experiment,EPR analysis and electrochemical test proved that surface-bound radicals(·OH and SO_(4)^(·−))and non-radical pathways worked in the BPA degradation(the former played a dominant role).Finally,possible BPA degradation route were *** work provided a promising way to synthesize the novel Fe,N and S co-doping carbon catalyst for degrading organic pollutants with low metal leaching and high catalytic ability.

关键词： Iron,Nitrogen and sulfur co-doped Peroxymonosulfate Bisphenol A Pyridine N Fe-N_(x)sites Thiophene S

Microbiome subsets determine tumor prognosis and molecular characteristics of clear-cell renal cell carcinoma:a multi-center integrated analysis of microbiome,metabolome,and transcriptome data

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Frontiers of Medicine 2024年第2期18卷 399-402页

作者： wenjin chen Xiuwu Pan Wang Zhou Da Xu Jiaxin chen Keqin Dong Weijie chen Brian Rini Xingang Cui Department of Urology Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghai200092China Department of Urology Third Affiliated Hospital of the Second Military Medical UniversityShanghai201805China Division of Hematology Oncology Vanderbilt University Medical CenterNashvilleTN37232USA

Dear editor,Patients with clear-cell renal cell carcinoma(ccRCC)potentially have a high recurrence rate of more than 40%[1].Patients receive radical or partial nephrectomy,sometimes assisted by targeted therapies or/and immune checkpoint inhibitors(ICIs),to improve overall survival(OS)[2].Large-cohort studies and large-scale human tissue sequencing have provided a series of molecular subtyping methods for precision medicine-based ccRCC risk stratification and therapeutic regimens,such as ClearCode34,the prognostic risk predictor[3],and seven subsets for ICI and angiogenesis blockade outcomes[4].However,these subtyping results are all based on human genomes without including the host microbiota,which may be non-negligible genome components.

关键词： editor negligible characteristics