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Nonstoichiometric In-s group yielding efficient carrier transfer pathway in In_(2)s_(3) photoanode for solar water oxidation

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susMat 2024年第1期4卷 154-165页

作者： Runyu Chen Linxing Meng Changda Wang Weiwei Xu Yulong Huang Li song Liang Li school of physical science and Technology Jiangsu Key Laboratory of Thin FilmsCenter for Energy Conversion Materials&PhysicsSoochow UniversitySuzhouJiangsuP.R.China Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow UniversitySuzhouJiangsuP.R.China National synchrotron Radiation Laboratory CAS Center for Excellence in NanoscienceUniversity of Science and Technology of ChinaHefeiAnhuiP.R.China school of Electronic and Information Engineering Changshu Institute of TechnologyChangshuJiangsuP.R.China

The construction of high-efficiency photoanodes is essential for developing outstanding photoelectrochemical(pEC)water splitting ***,insufficient carrier transport capabilities and sluggish surface water oxidation kinetics limit its *** a solvothermal annealing strategy,we prepared a nonstoichiometric In-s(Ns)group on the surface of an In_(2)s_(3) photoanode in situ and unexpectedly formed a type II transfer path of carrier,thereby reducing the interfacial recombination and promoting the bulk *** calculations and comprehensive characterizations demonstrated Ns group as an excellent oxygen evolution cocatalyst(OEC)that effectively facilitated carrier transport,lowered the surface overpotential,increased the surface active site,and accelerated the surface oxygen evolution reaction kinetics by precisely altering the rate-determining steps of*to*OH and*O to**** synergistic effects remarkably enhanced the pEC performance,with a high photocurrent density of 5.02 mA cm^(−2)at 1.23 V versus reversible hydrogen electrode and a negative shift in the onset potential by 310 *** work provides a new strategy for the in situ preparation of high-efficiency OECs and provides ideas for constructing excellent carrier transfer and transport channels.

关键词： In_(2)s_(3) photoanode water splitting

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Attention Mechanism-Based Method for Intrusion Target Recognition in Railway

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Transactions of Nanjing University of Aeronautics and Astronautics 2024年第4期41卷 541-554页

作者： sHI Jiang BAI Dingyuan GUO Baoqing WANG Yao RUAN Tao CHN Energy shuoHuang Railway Development Company Ltd Beijing 100080P.R.China school of Mechanical and Electronic Control Engineering Beijing Jiaotong UniversityBeijing 100044P.R.China

The detection of foreign object intrusion is crucial for ensuring the safety of railway *** address challenges such as low efficiency,suboptimal detection accuracy,and slow detection speed inherent in conventional comprehensive video monitoring systems for railways,a railway foreign object intrusion recognition and detection system is conceived and implemented using edge computing and deep learning *** a bid to raise detection accuracy,the convolutional block attention module(CBAM),including spatial and channel attention modules,is seamlessly integrated into the YOLOv5 model,giving rise to the CBAM-YOLOv5 ***,the distance intersection-over-union_non-maximum suppression(DIo U_NMs)algorithm is employed in lieu of the weighted nonmaximum suppression algorithm,resulting in improved detection performance for intrusive *** accelerate detection speed,the model undergoes pruning based on the batch normalization(BN)layer,and Tensor RT inference acceleration techniques are employed,culminating in the successful deployment of the algorithm on edge *** CBAM-YOLOv5 model exhibits a notable 2.1%enhancement in detection accuracy when evaluated on a selfconstructed railway dataset,achieving 95.0%for mean average precision(m Ap).Furthermore,the inference speed on edge devices attains a commendable 15 frame/s.

关键词： foreign object detection railway protection edge computing spatial attention module channel attention module

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Research on the longitudinal protection of a through-type cophase traction direct power supply system based on the empirical wavelet transform

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Global Energy Interconnection 2024年第2期7卷 206-216页

作者： Lu Li Zeduan Zhang Wang Cai Qikang Zhuang Guihong Bi Jian Deng shilong Chen Xiaorui Kan Faculty of Electric power Engineering Kunming University of Science and TechnologyKunming 650500P.R.China Brunel University London London UB83PHUnited Kingdom Yunnan power Grid Co. Ltd.Kunming 650041P.R.China

This paper proposes a longitudinal protection scheme utilizing empirical wavelet transform(EWT)for a through-type cophase traction direct power supply system,where both sides of a traction network line exhibit a distinctive boundary *** approach capitalizes on the boundary’s capacity to attenuate the high-frequency component of fault signals,resulting in a variation in the high-frequency transient energy ratio when faults occur inside or outside the *** internal line faults,the high-frequency transient energy at the checkpoints located at both ends surpasses that of its neighboring ***,for faults external to the line,the energy is lower compared to adjacent *** is employed to decompose the collected fault current signals,allowing access to the high-frequency transient *** longitudinal protection for the traction network line is established based on disparities between both ends of the traction network line and the high-frequency transient energy on either side of the ***,simulation verification through experimental results demonstrates the effectiveness of the proposed protection scheme across various initial fault angles,distances to faults,and fault transition resistances.

关键词： Through-type Cophase traction direct power supply system Traction network Empirical wavelet transform(EWT) Longitudinal protection

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simulation of start-Up process of Turbofan Engine Based on Full-state Characteristics of Fan

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Transactions of Nanjing University of Aeronautics and Astronautics 2024年第S01期41卷 27-34页

作者： FANG Jun ZHANG Tianhong College of Energy and power Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016P.R.China

Difficulties in obtaining component characteristics in the sub-idle state of rotor constrain the simulation capabilities of ground and windmill start-up processes for turbofan *** paper proposes a backbone feature method based on conventional characteristics parameters to derive the full-state characteristics of *** application of the fan’s full-state characteristics in component-level model of turbofan engine enables zero-speed iterative simulation for ground start-up process and windmill simulation for windmill start-up process,thereby improving the simulation capability of sub-idle state during turbofan engine start-up.

关键词： ground start‑up simulation windmill start‑up simulation full‑state characteristics turbofan engine modeling

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solid-liquid extraction for yttrium recovery using porous polymeric resin(XAD-7) functionalized with D_(2)EHpA

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Journal of Rare Earths 2024年第9期42卷 1764-1773,I0005页

作者： p.A.Martínez-Montoya R.G.sanchez-Alvarado D.Y.Medina-Velazquez M.L.Carrera-Jota p.Garnica-Chávez A.de J.Morales-Ramirez Higher school of Chemical Engineering and Extractive Industries ESIQIEIPNDepartment of Metallurgical EngineeringUPALM S/NCol.LindavistaGustavo A.Madero Cd.de MéxicoC.P07738Mexico Metropolitan Autonomous University Department of MaterialsBasic Sciences and EngineeringAv.San Pablo No.180Col.Reynosa TamaulipasCd.de MéxicoC.P02200Mexico Center for Research and Technological Innovation CIITECIPNCda.de CECATIs/nSanta CatarinaAzcapotzalcoC.P02250CDMXMexico

The recovery of yttrium is proposed by applying a solid-liquid extraction process using di-2-ethyl hexylphosphoric acid(D2EHpA) as extracting *** extracting agents were supported on a macro porous polymeric resin XAD-7(solid phase).Yttrium ions extraction and discharge tests were performed,firstly from a synthetic aqueous solution of 100 mg/L Y(liquid phase) at 25℃ with *** effects of pH of aqueous solutions bearing yttrium,volume fraction of extracting agents and the solid/liquid(s/L)ratio on the yttrium recovery were *** most favorable conditions for yttrium ions extraction are;20 vol% D_(2)EHpA functionalized resin,pH=1.5 and an s/L ratio of 10 mg/mL The discharge of yttrium ions was done under the same conditions of extraction stage,using a 2 mol/L [H_(2)sO_(4)] as stripping *** to 80% yttrium is extracted,while 75% yttrium is recovered in the striping *** all experiments,the reaction equilibrium is reached after 20 min,and the kinetics for the extraction stage was determined as a second-order ***,experiments were carried out to discharge the yttriumloaded resins,and it has been determined that the best pH value to strip the Y ions is *** tests of extraction and discharge for yttrium ions show that the functionalized resin can work at least five cycles without decreasing its ***,the proposed process was tested in a real solution with Y ions fro m a waste fluorescent la mp powder leached in H_(2)sO_(4),demonstrating the ability to effectively recover yttrium,separating it from various metals from the studied residue.

关键词： Yttrium recovery Rare earth solid-liquid extraction XAD-7 resin Fluorescent lamps recycling solid-liquid kinetics extraction

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Heat dissipation enhancement method for finned heat sink for AGV motor driver's IGBT module

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High Technology Letters 2024年第2期30卷 170-178页

作者：刘璇 ZHANG Mingchao LIU Chengwen ZHOU Chuanan LV Xiaoling school of Mechanical Engineering Hebei University of TechnologyTianjin 300401P.R.China

With the widespread use of high-power and highly integrated insulated gate bipolar transistor(IGBT),their cooling methods have become *** paper proposes a liquid cooling scheme for heavy-duty automated guided vehicle(AGV)motor driver in port environment,and improves heat dissipation by analyzing and optimizing the core component of finned heat ***,the temperature distribution of the initial scheme is studied by using Fluent software,and the heat transfer characteristics of the finned heat sink are obtained through numerical ***,an orthogonal test is designed and combined with the response surface methodology to optimize the structural parameters of the finned heat sink,resulting in a 14.57%increase in the heat dissipation ***,the effectiveness of heat dissipation enhancement is *** work provides valuable insights into improving the heat dissipation of IGBT modules and heat sinks,and provides guidance for their future applications.

关键词： finned heat sink insulated gate bipolar transistor(IGBT)module heat dissipation orthogonal test response surface methodology

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precise capture of circulating endometrial cells in endometriosis

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中华医学杂志(英文版) 2024年第14期137卷 1715-1723页

作者： Wang shang Cheng Hongyan Zhu Honglan Yu Xiaoming Ye Xue Chang Xiaohong Department of Obstetrics and Gynecology Peking University People’s Hospital Beijing China Reproductive Medicine Center Peking University People’s Hospital Beijing China

Background: Endometriosis (EM) is a complex benign gynecological disease, but it has malignant biological behavior and can invade any part of the body. Clinical manifestations include pelvic pain, dysmenorrhea, infertility, pelvic nodules, and masses. Our previous study successfully detected circulating endometrial cells (CECs) in the peripheral blood of patients with EM. The purpose of this study is to overcome the limitation of cell size in the previous microfluidic chip method, to further accurately capture CECs, understand the characteristics of these cells, and explore the relationship between CECs and the clinical course characteristics of patients with ***: Human peripheral venous blood used to detect CECs and circulating vascular endothelial cells (CVECs) was taken from EM patients (n = 34) hospitalized in the peking University people’s Hospital. We used the subtraction enrichment and immunostaining fluorescencein situ hybridization (sE-iFIsH) method to exclude the interference of red blood cells, white blood cells, and CVECs, so as to accurately capture the CECs in the peripheral blood of patients with EM. Then we clarified the size and ploidy number of chromosome 8 of CECs, and a second grouping of patients was performed based on clinical characteristics to determine the relationship between CECs and clinical course ***: The peripheral blood of 34 EM patients and 12 non-EM patients was evaluated by sE-iFIsH. Overall, 34 eligible EM patients were enrolled. The results showed that the detection rates of CECs were 58.8% in EM patients and 16.7% in the control group. However, after classification according to clinical characteristics, more CECs could be detected in the peripheral blood of patients with rapidly progressive EM, with a detection rate of 94.4% (17/18). In total, 63.5% (40/63) of these cells were small cells with diameters below 5 μm, and 44.4% (28/63) were aneuploid cells. No significant association was found between the

关键词： Endometriosis Circulating endometrial cells Clinical symptoms Dysmenorrhea Circulating vascular endothelial cells

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pathogens of first-episode pulmonary infection in 141 children with chronic granulomatous disease

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Chinese Medical Journal 2024年第4期137卷 502-504页

作者： Hui Liu shunying Zhao Haiming Yang Jinrong Liu Hui Xu Xiaolei Tang Yuelin shen Xiaoyan Zhang Xiaohui Wen Yuhong Zhao ping Chu Huimin Li Department of second Respiratory Medicine National Clinical Research Center for Respiratory DiseasesBeijing Children’s HospitalCapital Medical UniversityNational Center for Children’s HealthBeijing 100045China Office of scientific Research Beijing Children’s HospitalCapital Medical UniversityNational Center for Children’s HealthBeijing 100045China

To the Editor:Chronic granulomatous disease(CGD)is an inherited primary immunodeficiency disease characterized by recurrent life-threatening bacterial or fungal infection and tissue granuloma formation.^([1])pulmonary infection is the most frequent manifestation,affecting nearly 80%of patients,[2]and remains the major cause of morbidity and mortality in patients with *** of the pathogenic microorganisms responsible for first-episode pulmonary infection provide information on the spectrum of infection in patients with CGD,help guide the empirical choice of antibiotics or antifungal therapy,and contribute to the early identification and management of *** is the commonest causative agent of pulmonary infection,but the distribution of other pathogens varies among countries.^([2–5])Few studies have investigated the etiology of pulmonary infection in CGD in a large cohort in China.

关键词： granuloma infection mortality

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Flexoelectricity in oxide thin films

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Journal of Advanced Dielectrics 2024年第1期14卷 1-24页

作者： Guoyang shen Renhong Liang Zhiguo Wang Zhiyong Liu Longlong shu school of physics and Materials science Nanchang University Nanchang 330031 P.R.China school of Materials science and Engineering Nanchang Hangkong University Nanchang 330063P.R.China

Flexoelectric effect describes the electromechanical coupling between the strain gradient and its internal polarization in all *** this universality,the resulting flexoelectric field remains small at the macroscopic ***,in nanosystems,the size-dependent effect of flexoelectricity becomes increasingly significant,leading to a notable flexoelectric field that can strongly influence the material’s physical *** review aims to explore the flexoelectric effect specifically at the *** achieve this by examining strain gradients generated through two distinct methods:internal inhomogeneous strain and external *** addition,advanced synthesis techniques are utilized to enhance the properties and functionalities associated with ***,we delve into other coupled phenomena observed in thin films,including the coupling and utilization of flexomagnetic and flexophotovoltaic *** review presents the latest advancements in these areas and highlights their role in driving further breakthroughs in the field of flexoelectricity.

关键词： Flexoelectric effect strain gradient polarization nano-thin film flexomagnetic flexophotovoltaic

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photoacoustic/ultrasound dual-modal imaging of human nails: A pilot study

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Journal of Innovative Optical Health sciences 2024年第6期17卷 15-28页

作者： Yanting Wen Yijie Huang Lin Huang Dan Wu Renbin Zhong shixie Jiang Yudi Zhang Ting Liu Xiaotian Liu Huabei Jiang Department of Ultrasound Chengdu Fifth People's Hospital Chengdu 611137P.R.China school of Computer science and Technology Chongqing University of posts and Telecommunications Chongqing 400065 P.R.China school of Electronic science and Engineering University of Electronic science and Technology Chengdu 611731 P.R.China Department of psychiatry University of Florida College of Medicine GainesvilleFL 32610USA Department of Medical Engineering University of south Florida Tampa 33620USA

Traditional diagnostic techniques including visual examination,ultrasound(Us),and magnetic resonance imaging(MRI)have limitations of in-depth information for the detection of nail disorders,resolution,and *** pilot study,for thefirst time,evaluates a dualmodality imaging system that combines photoacoustic tomography(pAT)with the Us for the multiparametric quantitative assessment of human *** study involved a small cohort offive healthy volunteers who underwent pAT/Us imaging for acquiring the nail unit *** pAT/Us dual-modality imaging successfully revealed thefine anatomical structures and microvascular distribution within the nail and nail ***,this system utilized multispectral pAT to analyze functional tissue parameters,including oxygenated hemoglobin,deoxyhemoglobin,oxygen saturation,and collagen under tourniquet and cold stimulus tests to evaluate changes in the microcirculation of the nail *** quantitative analysis of multispectral pAT reconstructed images demonstrated heightened sensitivity in detecting alterations in blood oxygenation levels and collagen content within the nail bed,under simulated different physiological *** pilot study highlights the potential of pAT/Us dual-modality imaging as a real-time,noninvasive diagnostic modality for evaluating human nail health and for early detection of nail bed pathologies.

关键词： Nail photoacoustic tomography ultrasound multi-modality quantitative parameter

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