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Chinese Chemical Letters 2024年第4期35卷 176-180页

作者： chao-long chen Rong chen La-Sheng long Lan-Sun Zheng Xiang-Jian Kong Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

Light-driven nitrogen fixation to produce ammonia is a green and economical technology of nitrogen reduction but is still quite challenging, especially in an air atmosphere without any sacrificial ***, we demonstrate efficient photocatalytic nitrogen fixation using water and air directly by loading lanthanide–transition metal(4f–3d) cluster NdCo_(3) on two-dimensional P-doped graphitic carbon nitrides(PCN) material surface. Benefiting from the increase in the number of nitrogen vacancies(NVs) and highly matched band gap structure and excellent hole trapping ability of clusters, the NdCo_(3)/PCN photocatalyst exhibits efficient nitrogen reduction activity with 371(in air) and 825 μmol h^(-1)g^(-1)(in pure nitrogen)without any sacrificial reagents. The introduction of potassium sulfate inhibits hydrogen production and promotes nitrogen reduction activation. This work suggests that anchoring precisely structured clusters on 2D materials may enhance photocatalytic nitrogen reduction under normal temperature and pressure.

关键词： Photocatalytic Nitrogen fixation 4f-3d Cluster Air atmosphere

A High-Accuracy Curve Boundary Recognition Method Based on the Lattice Boltzmann Method and Immersed Moving Boundary Method

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Computer Modeling in Engineering & Sciences 2024年第9期140卷 2533-2557页

作者： Jie-Di Weng Yong-Zheng Jiang long-chao chen Xu Zhang Guan-Yong Zhang Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment Hunan University of Science and TechnologyXiangtan411201China School of Mechanical Engineering Hunan Chemical Vocational Technology CollegeZhuzhou412000China

Applying numerical simulation technology to investigate fluid-solid interaction involving complex curved bound-aries is vital in aircraft design,ocean,and construction ***,current methods such as Lattice Boltzmann(LBM)and the immersion boundary method based on solid ratio(IMB)have limitations in identifying custom curved ***,IBM based on velocity correction(IBM-VC)suffers from inaccuracies and numerical ***,this study introduces a high-accuracy curve boundary recognition method(IMB-CB),which identifies boundary nodes by moving the search box,and corrects the weighting function in LBM by calculating the solid ratio of the boundary nodes,achieving accurate recognition of custom curve *** addition,curve boundary image and dot methods are utilized to verify *** findings revealed that IMB-CB can accurately identify the boundary,showing an error of less than 1.8%with 500 ***,the flow in the custom curve boundary and aerodynamic characteristics of the NACA0012 airfoil are calculated and compared to *** showed that IMB-CB yields lower lift and drag coefficient errors than IBM-VC,with a 1.45%drag coefficient *** addition,the characteristic curve of IMB-CB is very stable,whereas that of IBM-VC is *** the moving boundary problem,LBM-IMB-CB with discrete element method(DEM)is capable of accurately simulating the physical phenomena of multi-moving particle flow in complex curved *** research proposes a new curve boundary recognition method,which can significantly promote the stability and accuracy of fluid-solid interaction simulations and thus has huge applications in engineering.

关键词： Fluid-solid interaction curve boundary recognition method Lattice Boltzmann method immersed moving boundary method

Molecular solid solution of lanthanide-titanium-oxo clusters with enhanced photocatalytic hydrogen evolution

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Science China Chemistry 2024年第2期67卷 529-535页

作者： Rong chen chao-long chen Hui Zhang Zi-Han Wang Fu-Li Sun Ming-Hao Du Gui-Lin Zhuang cheng Wang La-Sheng long Lan-Sun Zheng Xiang-Jian Kong Collaborative Innovation Centre of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry College of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China College of Chemical Engineering Zhejiang University of TechnologyHangzhou310032China

Molecular solid solutions of metal clusters containing different metal centers with well-defined structures can accurately regulate the HOMO-LUMO gap,but are rarely ***,a series of colorless lanthanide-titanium-oxo clusters Ln_(2)Ti_4(μ_(2)-O)_(2)(μ_(3)-O)_4(Piv)_(10)(THF)_(2)(Ln_(2)Ti_4,Ln = Eu,Gd,Tb,and Ce,HPiv = pivalic acid) were synthesized by the reaction of pivalic acid with Ln(Ac)_(3) and titanium *** light yellow crystal of cluster solid solutions Eu_(2)Ti_(4-x)Cd_(x),containing a mixture of Eu_(2)Ti_4 and Eu_(2)Ti_(3)Cd,was obtained by in situ doping Cd^(2+) and S^(2–).Eu_(2)Ti_(3.92)Cd_(0.08) displays efficient photocatalytic hydrogen evolution activity without a co-catalyst,which is up to 2.6 times that of Eu_(2)Ti_*** time-resolved transient absorption spectroscopy and spin-polarized density functional calculations showed that the enhanced photocatalytic performance of Eu_(2)Ti_(4-x)Cd_(x) can be attributed to the narrower HOMO-LUMO gap and lower LUMO position than that of Eu_(2)Ti_*** studyprovides an in situ doping method to realize the simple preparation of cluster solid solution.

关键词： molecular solid solution lanthanide-titanium-oxo clusters photocatalytic hydrogen evolution

Lanthanide-oxo clusters for efficient catalytic reduction of carboxamides

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Science China Chemistry 2023年第2期66卷 443-448页

作者： Zhen-Zhang Weng chao-long chen long-Wu Ye La-Sheng long Lan-Sun Zheng Xiang-Jian Kong Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China

The reduction of carboxamides into high value-added amines is a very interesting but great challenging *** we demonstrate that polynuclear lanthanide-oxo clusters Ln16(Ln=Eu and Gd)can be used as efficient catalyst to reduce primary and secondary carboxamides to amines with excellent yield of 71%-98%and broad substrates *** methodology can extend to the gram-scale synthesis of phenethylamine drug with 93%*** on the isolation and characterization of catalytic intermediates,a catalytic mechanism involving multipath reaction is *** work provides efficient lanthanide cluster catalysts for the reduction of carboxamides to amines.

关键词： lanthanide clusters amide reduction metal-hydride BH3 catalytic mechanism

Semi-supervised surface defect detection of wind turbine blades with YOLOv4

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Global Energy Interconnection 2024年第3期7卷 284-292页

作者： chao Huang Minghui chen long Wang Department of Computer and Communication Engineering University of Science and Technology BeijingBeijing 100083P.R.China Shunde Innovation School University of Science and Technology BeijingFoshan 528399P.R.China

Timely inspection of defects on the surfaces of wind turbine blades can effectively prevent unpredictable *** this end,this study proposes a semi-supervised object-detection network based on You Only Looking Once version 4(YOLOv4).A semi-supervised structure comprising a generative adversarial network(GAN)was designed to overcome the difficulty in obtaining sufficient samples and sample *** a GAN,the generator is realized by an encoder-decoder network,where the backbone of the encoder is YOLOv4 and the decoder comprises inverse convolutional *** features from the generator are passed to the defect detection *** several unlabeled images can significantly improve the generalization and recognition capabilities of defect-detection *** small-scale object detection capacity of the network can be improved by enhancing essential features in the feature map by adding the concurrent spatial and channel squeeze and excitation(scSE)attention module to the three parts of the YOLOv4 network.A balancing improvement was made to the loss function of YOLOv4 to overcome the imbalance problem of the defective *** results for both the single-and multi-category defect datasets show that the improved model can make good use of the features of the unlabeled *** accuracy of wind turbine blade defect detection also has a significant advantage over classical object detection algorithms,including faster R-CNN and DETR.

关键词： Defect detection Generative adversarial network scSE attention Semi-supervision Wind turbine

Peri-operative extracorporeal membrane oxygenation in adult and pediatric living donor liver transplantation:a single-center experience

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Hepatobiliary Surgery and Nutrition 2023年第6期12卷 898-908,I0011页

作者： Itsuko Chih-Yi chen Leona Bettina PDungca Chee-Chien Yong Wei Ho Jiunn-Jye Sheu chao-long chen Liver Transplantation Center Department of SurgeryKaohsiung Chang Gung Memorial HospitalKaohsiung Cardiovascular Surgery Kaohsiung Chang Gung Memorial HospitalKaohsiung

Background:Extracorporeal membrane oxygenation(ECMO)is a potential rescue therapy for patients with acute cardiopulmonary dysfunction refractory to conventional *** this study,we described the clinical profiles and outcomes of adult and pediatric living donor liver transplantation(LDLT)patients who received ECMO support during the peri-operative ***:From June 1994 to December 2020,eleven out of the 1,812 LDLTs performed at Kaohsiung Chang Gung Memorial Hospital required ECMO support:six for respiratory failure,three for cardiogenic shock,and two for refractory septic *** between the survivor and non-survivor groups was ***:The survival rate for liver transplantation(LT)patients on ECMO support is 36.4%-40%in adults and 33.3%in pediatrics,while the survival rate per indication is as follows:acute respiratory distress syndrome(ARDS)(50%),cardiogenic shock(33.3%),and sepsis(0%).Shorter durations of LT-to-ECMO and pre-ECMO mechanical ventilation were observed in the survivor *** the other hand,we observed persistently elevated total bilirubin levels in non-survivors,while none of the survivors had aspartate aminotransferase(AST)/alanine aminotransferase(ALT)levels>1,000 U/L.A higher proportion of non-survivors were on concurrent continuous renal replacement therapy(CRRT).Conclusions:Our experience has proven ECMO’s utility during the peri-operative period for both adult and pediatric LDLT patients,more specifically for indications other than septic *** studies are needed to better understand the factors leading to poor outcomes in order to identify patients who will more likely benefit from ECMO.

关键词： Extracorporeal membrane oxygenation(ECMO) living donor liver transplantation(LDLT) respiratory failure cardiogenic shock septic shock

Living donor liver transplantation for Barcelona clinic liver cancer (BCLC) intermediate-stage hepatocellular carcinoma

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Hepatobiliary Surgery and Nutrition 2023年第2期12卷 169-182页

作者： Ming chao Tsai Chee-Chien Yong Chih-Che Lin Wei-chen Lee Chih-Chi Wang chao-Hung Hung I-Hsuan chen Yu-Fan cheng Chang-Chun Hsiao Tsung-Hui Hu chao-long chen Division of Hepato-Gastroenterology Department of Internal MedicineKaohsiung Chang Gung Memorial Hospital and Chang Gung University College of MedicineKaohsiung School of Medicine College of MedicineNational Sun Yat-sen UniversityKaohsiung Liver Transplantation Center and Department of Surgery Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of MedicineKaohsiung Division of Liver and Transplantation Surgery Chang Gung Memorial Hospital and Chang Gung University College of MedicineTaoyuan Liver Transplantation Center and Department of Diagnostic Radiology Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of MedicineKaohsiung Graduate Institute of Clinical Medical Sciences College of MedicineChang Gung UniversityDivision of Pulmonary and Critical Care MedicineKaohsiung Chang Gung Memorial HospitalKaohsiung

Background:Barcelona clinic liver cancer(BCLC)stage B(intermediate stage)hepatocellular carcinoma(HCC)is highly heterogeneous;thus,identifying the most effective treatment for individual patients represents a significant clinical ***,transarterial chemoembolization(TACE)is the only recommended treatment ***,we aimed to investigate the patient characteristics and outcomes of living donor liver transplantation(LDLT)for BCLC stage B ***:A total of 516 patients with BCLC stage B HCC who underwent LDLT(n=104)or did not undergo LDLT(non-LDLT;n=412)between 2004 to 2018 were analyzed by propensity score matching(PSM;1:4)*** influencing overall survival(OS)and recurrence were analyzed using Cox’s proportional hazards ***:Patients treated with LDLT achieved better OS than the non-LDLT group,including liver-and non-liver related survival(all P60 years(P=0.006),a neutrophil-lymphocyte ratio(NLR)>4(P=0.016)and>3 locoregional therapies(LRT)before LDLT(P60 years(P3 LRT before LDLT(P=0.001)were independent risk factors for *** a combination of age,NLR,and LRT before liver transplantation(LT),the patients can be divided into low-risk(none of risk),intermediate-risk(one of risk),and high risk(more than two of risk)*** were significant differences in the cumulative HCC recurrence(P<0.001)and mortality(P<0.001)rates among the three ***:LDLT may represent a valuable therapeutic option for selected patients with BCLC stage B HCC.

关键词： Living donor liver transplantation(LDLT) Barcelona clinic liver cancer stage B(BCLC stage B) intermediate stage hepatocellular carcinoma(HCC)

Proton beam therapy for downstaging hepatocellular carcinoma with lobar portal vein tumor thrombosis to living donor liver transplantation

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Hepatobiliary Surgery and Nutrition 2023年第6期12卷 966-974页

作者： chao-long chen Leona Bettina PDungca Chee-Chien Yong Itsuko Chih-Yi chen Yu-Fan cheng Jen-Yu cheng Yen-Yang chen Liver Transplantation Center Department of SurgeryKaohsiung Chang Gung Memorial HospitalChang Gung University College of MedicineKaohsiung Liver Transplantation Center Department of Diagnostic RadiologyKaohsiung Chang Gung Memorial HospitalChang Gung University College of MedicineKaohsiung Liver Transplantation Center Department of Radiation OncologyKaohsiung Chang Gung Memorial HospitalChang Gung University College of MedicineKaohsiung Liver Transplantation Center Department of Hematology-OncologyKaohsiung Chang Gung Memorial HospitalChang Gung University College of MedicineKaohsiung

Introduction Liver transplantation(LT)is considered as the definitive standard treatment for hepatocellular carcinoma(HCC)with the advantage of addressing both malignancy and the underlying cirrhosis,thus,providing th... 详细信息

关键词： Proton beam therapy(PBT) hepatocellular carcinoma(HCC) portal vein tumor thrombosis(PVTT) living donor liver transplantation(LDLT) downstaging therapy

A highly reduced Mo_(74) polyoxometalate featuring high proton conductivity accessed by building block strategy

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Science China Chemistry 2024年第3期67卷 862-868页

作者： Shi-Yi Liu Xue-Xin Li Wei-chao chen Kui-Zhan Shao Xin-long Wang chao Qin Zhong-Min Su Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Department of ChemistryNortheast Normal UniversityChangchun 130024China State Key Laboratory of Supramolecular Structure and Materials Institute of Theoretical ChemistryCollege of ChemistryJilin UniversityChangchun 130021China

Highly reduced polyoxometalates(POMs) are predicted to be used as rather high energy density materials;however,it still suffers from the limited cluster species and reduction *** we demonstrate that it is possible to employ the building block strategy to generate a highly reduced polyoxomolybdate(C_(2)H_(8)N)_(14)(NH_(4))_(4)H_(14)[Mo_(48)-ⅤMo_(26)ⅥO_(202)(OH)_(12)(SO_(4))_(6)]·46H_(2)O(Mo_(74)).The fundamental Mo-based{Mo_x}(x=4,5,and 6) building blocks,which are templated by tetra-coordinated anions{MoO_(4)}or{SO_(4)},not only lay foundation for the formation of Mo_(74) featuring an unprecedented reduction ratio of 65%,but also give rise to SBBs-mediated(secondary building blocks) supramolecular dense packing interactions among the isolated Mo_(74) clusters that are favorable for proton ***,high proton conductivity(2.04×10^(-2)S cm^(-1)) had been realized at 50℃ and 90% relative humidity,revealing one of the well-known POMs-based crystalline proton conducting *** result highlights that this building block approach possesses great potential in producing highly reduced POM systems that can achieve controllable reduced ratio and desirable properties.

关键词： polyoxometalate building block molybdenum highly reduced state proton conduction

Proton beam therapy to bridge or downstage locally advanced hepatocellular carcinoma to living donor liver transplantation

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Hepatobiliary Surgery and Nutrition 2022年第1期11卷 103-111页

作者： chao-long chen Aldwin D.Ong Jen-Yu cheng Chee-Chien Yong Chih-Che Lin Chih-Yi chen Yu-Fan cheng Liver Transplantation Center Department of SurgeryKaohsiung Chang Gung Memorial HospitalChang Gung University College of MedicineKaohsiungTaiwanChina Liver Transplantation Center Department of Radiation OncologyKaohsiung Chang Gung Memorial HospitalChang Gung University College of MedicineKaohsiungTaiwanChina Liver Transplantation Center Department of Diagnostic RadiologyKaohsiung Chang Gung Memorial HospitalChang Gung University College of MedicineKaohsiungTaiwanChina

Introduction Within the last decade,progress in transplant and surgical oncology has been *** liver oncology alone,there has been concurrent technological innovation across the different adjunct fields and tiers of oncology related to hepatocellular carcinoma(HCC),progressing in quite an unprecedented *** improvements in our capacity to diagnose and prognosticate HCC with increasing sensitivity,specificity,and predictability is being *** now better understand that staging,treatment and prognostication cannot be determined on a static basis of tumor burden(i.e.,tumor size and number)alone and a“one size fits all”*** individualized assessment is now mandatory in consideration of intra-and intertumoral heterogeneity and tumor biology in order to more precisely guide diagnostics and treatment options(1).

关键词： hepatocellular alone donor