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| 1 | SF_(6)decomposition and insulation condition monitoring of GIE:A review显示文摘The statistics of the Conference International des Grands Reseaux Electriques(CIGRE)indicate that the operational reliability of SF6 gas‐insulated equipment(GIE)is very high;however,the failure rate of the GIE in operation is much higher than that of the IEC standard,and the fault occurs frequently in the GIE at a high voltage level.The reason is due to the complex and strong on‐site electromagnetic interference environment and fully enclosed structure of GIE.The key method and technology for effective on‐line monitoring and fault diagnosis of GIE are still lacking.Given the partial strong electromagnetic energy and high temperature induced by early latent insulation faults in the equipment,SF6 gas insulation presents different degrees of decomposition.The decomposition products mainly include SO_(2)F_(2),SOF_(2),SO_(2),HF,and H2S.The decomposition characteristics of SF6 are closely related to the property of insulation faults.At present,this area is attracting attention from the power industry and research institutes.This study summarises the current research on SF_(6)decomposition component analysis(DCA).The content mainly includes the latest progress of SF_(6)decomposition characteristics and mechanism under fault conditions,and fault diagnosis methods based on decomposition components. | Fuping Zeng Haotian Li Hongtu Cheng Ju Tang Yilu Liu | 2021 | High Voltage2021，6，6： | 3 |
| 2 | Fast coating analysis and modeling for RCS reduction of aircraft显示文摘In order to fast analyze the aircraft Radar Cross Section(RCS) and accurately reduce it with Radar Absorbing Materials(RAM), a comprehensive analysis method based on Higher-Order Method of Moments(HOMOM), termed Locally Coating Method(LCM), is proposed in this paper. There are two steps to fast analyze coatings for RCS reduction in this method: analyze the RCS of various parts before coating the aircraft;model a coating over the aircraft and analyze the wave absorbing effect of it. The aircraft RCS is calculated as a whole but analyzed in various parts by LCM, and thus the RCS contribution of different parts can be compared without disturbing the current continuity. A model expansion algorithm is also presented in LCM to model absorption coatings on specified aircraft parts for later stage RCS calculation of the coated aircraft. | Haotian ZENG Xunwang ZHAO Qin SU Yu ZHANG Hao LI | 2019 | Chinese Journal of Aeronautics2019，32，6： | 2 |
| 3 | Solar-Driven Producing of Value-Added Chemicals with Organic Semiconductor-Bacteria Biohybrid System显示文摘Photosynthetic biohybrid systems exhibit promising performance in biosynthesis;however,these systems can only produce a single metabolite and cannot further transform carbon sources into highly valuable chemical production.Herein,a photosynthetic biohybrid system integrating biological and chemical cascade synthesis was developed for solar-driven conversion of glucose to value-added chemicals.A new ternary cooperative biohybrid system,namely bacterial factory,was constructed by self-assembling of enzyme-modified light-harvesting donor-acceptor conjugated polymer nanoparticles(D-A CPNs)and genetically engineered Escherichia coli(E.coli).The D-A CPNs coating on E.coli could effectively generate electrons under light irradiation,which were transferred into E.coli to promote the 37%increment of threonine production by increasing the ratio of nicotinamide adenine dinucleotide phosphate(NADPH).Subsequently,the metabolized threonine was catalyzed by threonine deaminase covalently linking with D-A CPNs to obtain 2-oxobutyrate,which is an important precursor of drugs and chemicals.The 2-oxobutyrate yield under light irradiation is increased by 58%in comparison to that in dark.This work provides a new organic semiconductor-microorganism photosynthetic biohybrid system for biological and chemical cascade synthesis of highly valuable chemicals by taking advantage of renewable carbon sources and solar energy. | Wen Yu Haotian Bai Yue Zeng Hao Zhao Shengpeng Xia Yiming Huang Fengting Lv Shu Wang | 2022 | Research2022，，3： | 2 |
| 4 | Formation process and mechanical properties in selective laser melted multi-principal-element alloys显示文摘Additive manufacturing is believed to open up a new era in precise microfabrication,and the dynamic microstructure evolution during the process as well as the experiment-simulation correlated study is conducted on a prototype multi-principal-element alloys FeCrNi fabricated using selective laser melting(SLM).Experimental results reveal that columnar crystals grow across the cladding layers and the dense cellular structures develop in the filled crystal.At the micron scale,all constituent elements are evenly distributed,while at the near-atomic scale,Cr element is obviously segregated.Simulation results at the atomic scale illustrate that i)the solid-liquid interface during the grain growth changes from horizontal to arc due to the radial temperature gradient;ii)the precipitates,microscale voids,and stacking faults also form dynamically as a result of the thermal gradient,leading to the residual stress in the SLMed structure.In addition,we established a microstructure-based physical model based on atomic simulation,which indicates that strong interface strengthening exists in the tensile deformation.The present work provides an atomic-scale understanding of the microstructural evolution in the SLM process through the combination of experiment and simulation. | Jing Peng Jia Li Bin Liu Jian Wang Haotian Chen Hui Feng Xin Zeng Heng Duan Yuankui Cao Junyang He Peter K.Liaw Qihong Fang | 2023 | Journal of Materials Science & Technology2023，，2： | 0 |
| 5 | Expert recommendations on collection and annotation of otoscopy images for intelligent medicine显示文摘Middle and outer ear diseases are common otological diseases worldwide.Otoscopy and otoendoscopy exami-nations are essential first steps in the evaluation of patients with otological diseases.Misdiagnosis often occurs when the doctor lacks experience in interpreting the results of otoscopy or otoendoscopy,leading to delays in treatment or complications.Using deep learning to process otoscopy images and developing otoscopic artificial-intelligence-based decision-making systems will become a significant trend in the future.However,the uneven quality of otoscopy images is among the major obstacles to development of such artificial intelligence systems,and no standardized process for data acquisition,and annotation of otoscopy images in intelligent medicine has yet been fully established.The standards for data storage and data management are unified with those of other specialties and are introduced in detail here.This expert recommendation criterion improved and standardized the collection and annotation procedures for otoscopy images and fills the current gap in otologic intelligent medicine;it would thus lay a solid foundation for the standardized collection,storage,and annotation of oto-scopy images and the application of training algorithms,and promote the development of automatic diagnosis and treatment for otological diseases.The full text introduced image collection(including patient preparation,equipment standards,and image storage),image annotation standards,and quality control. | Yuexin Cai Junbo Zeng Liping Lan Suijun Chen Yongkang Ou Linqi Zeng Qintai Yang Peng Li Yubin Chen Qi Li Hongzheng Zhang Fan Shu Guoping Chen Wenben Chen Yahan Yang Ruiyang Li Anqi Yan Haotian Lin Yiqing Zheng | 2022 | Intelligent Medicine2022，2，4： | 0 |
| 6 | SF_(6) decomposition behaviour under partial discharge of typical insulation defects in gas-solid insulated valve-side bushing of converter transformer显示文摘In this paper we investigated SF_(6) decomposition behaviour of typical insulation defects in gas-solid insulated converter transformer valve-side bushing under partial discharge(PD).Additionally,we compared the results with that of gas insulated switchgear(GIS).The results indicated that SF_(6) decomposition behaviour varies with the insulation defects type.For metal protrusion defects,the proportion ranking of CO_(2) and SO_(2) can be related to whether the needle tip is wrapped with epoxy resin-impregnated paper(ERIP).The proportion of carbon-containing products is much higher under contamination defect than under other defects.Moreover,the proportion of carbon-containing components is higher under flashover condition than under PD condition and is accompanied by the appearance of H2S and CS_(2).However,the yield of SO_(2)F_(2) is always low.Compared to negative DC voltages,positive DC voltages have a higher proportion of carboncontaining components,mainly in the form of more CO_(2) and less SOF_(2).Compared to the PD decomposition behaviour of typical insulation defects in GIS,when PD involves ERIP,the proportion of carbon-containing products,especially CO_(2),is significant higher,while the proportion of sulphur containing products,especially SO_(2)F_(2),is lower. | Hongtu Cheng Fuping Zeng Bowen Tang Haotian Li Ju Tang Zujian Huang Xianzong Chao | 2023 | High Voltage2023，8，4： | 0 |
| 7 | Ferroptosis: a potential target for the treatment of atherosclerosis显示文摘Atherosclerosis(AS),the main contributor to acute cardiovascular events,such as myocardial infarction and ischemic stroke,is characterized by necrotic core formation and plaque instability induced by cell death.The mechanisms of cell death in AS have recently been identified and elucidated.Ferroptosis,a novel iron-dependent form of cell death,has been proven to participate in atherosclerotic progression by increasing endothelial reactive oxygen species(ROS)levels and lipid peroxidation.Furthermore,accumulated intracellular iron activates various signaling pathways or risk factors for AS,such as abnormal lipid metabolism,oxidative stress,and inflammation,which can eventually lead to the disordered function of macrophages,vascular smooth muscle cells,and vascular endothelial cells.However,the molecular pathways through which ferroptosis affects AS development and progression are not entirely understood.This review systematically summarizes the interactions between AS and ferroptosis and provides a feasible approach for inhibiting AS progression from the perspective of ferroptosis. | Chengyi Li Ran Liu Zhenyu Xiong Xue Bao Sijia Liang Haotian Zeng Wei Jin Quan Gong Lian Liu Jiawei Guo | 2024 | Acta Biochimica et Biophysica Sinica2024，56，3： | 0 |
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