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Reciprocal translation between SAR and optical remote sensing images with cascaded-residual adversarial networks

Science China(Information Sciences) 2021年第2期64卷 154-168页

作者： Shilei FU Feng XU ya-Qiu jin Key Lab for Information Science of Electromagnetic Waves (MoE) Fudan University

Despite the advantages of all-weather and all-day high-resolution imaging, synthetic aperture radar(SAR) images are much less viewed and used by general people because human vision is not adapted to microwave scattering phenomenon. However, expert interpreters can be trained by comparing side-byside SAR and optical images to learn the mapping rules from SAR to optical. This paper attempts to develop machine intelligence that is trainable with large-volume co-registered SAR and optical images to translate SAR images to optical version for assisted SAR image interpretation. Reciprocal SAR-optical image translation is a challenging task because it is a raw data translation between two physically very different sensing modalities. Inspired by recent progresses in image translation studies in computer vision,this paper tackles the problem of SAR-optical reciprocal translation with an adversarial network scheme where cascaded residual connections and hybrid L1-GAN loss are employed. It is trained and tested on both spaceborne Gaofen-3(GF-3) and airborne Uninhabited Airborne Vehicle Synthetic Aperture Radar(UAVSAR) images. Results are presented for datasets of different resolutions and polarizations and compared with other state-of-the-art methods. The Frechet inception distance(FID) is used to quantitatively evaluate the translation performance. The possibility of unsupervised learning with unpaired/unregistered SAR and optical images is also explored. Results show that the proposed translation network works well under many scenarios and it could potentially be used for assisted SAR interpretation.

关键词： synthetic aperture radar generative adversarial network (GAN) image translation cascaded residual connection Frechet inception distance

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Corrosion Behaviour of a Non‑equiatomic CoCrFeNiMo High‑Entropy Alloy in H_(2)S‑Containing and H_(2)S‑Free Environments

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Acta Metallurgica Sinica(English Letters) 2023年第3期36卷 366-378页

作者： zhu Wang Guo‑Hui Zhang Yong yao Xue‑Hua Fan Jie jin lei Zhang yan‑Xia Du Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijing 100083China CITIC Pacific Special Steel Group Co. LtdJiangsu 214429China China Petroleum Engineering&Construction Co. Ltd Beijing CompanyBeijing 100085China

The corrosion behaviour of a non-equiatomic CoCrFeNiMo high-entropy alloy(HEA)in H_(2)S-containing and H_(2)S-free environments was studied by electrochemical tests,surface characterization,and solution *** results showed that the HEA exhibited primary and secondary passivation in the H_(2)S-free environment,and the transition was owing to the enhanced dissolution of Fe *** with the primary passive film,the Cr/Fe ratio in the secondary passive film increased at the expense of the selective dissolution of ***,the corrosion resistance of HEA decreased with the applied *** was the most stable element in the film of HEA,regardless of H_(2)*** presence of H_(2)S accelerated the dissolution of all the cationic elements in the HEA.H_(2)S promoted the formation of thicker but less protective surface film and induced the loss of passivity.

关键词： High-entropy alloy(HEA) Corrosion H_(2)S Secondary passivation X-ray photoelectron spectroscopy(XPS) Induced coupled plasma(ICP)

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Loss of LBP triggers lipid metabolic disorder through H3K27 acetylation-mediated C/EBPβ-SCD activation in non-alcoholic fatty liver disease

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Zoological Research 2024年第1期45卷 79-94页

作者： ya-Ling zhu.lei-lei Meng jin-Hu Ma Xin Yuan Shu-Wen Chen Xin-Rui Yi Xin-Yu Li Yi Wang Yun-Shu Tang Min Xue Mei-Zi zhu jin Peng Xue-jin Lu Jian-Zhen Huang Zi-Chen Song Chong Wu Ke-Zhong Zheng Qing-Qing Dai Fan Huang Hao-Shu Fang Department of Pathophysiology Anhui Medical UniversityHefeiAnhui 230032China Laboratory Animal Research Center School of Basic Medical SciencesAnhui Medical UniversityHefeiAnhui 230032China Department of Hepatobiliary Surgery First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui 230022China College of Animal Science and Technology Jiangxi Agricultural UniversityNanchangJiangxi 330045China

Non-alcoholic fatty liver disease(NAFLD)is associated with mutations in lipopolysaccharide-binding protein(LBP),but the underlying epigenetic mechanisms remain ***,LBP^(-/-)rats with NAFLD were established and used to conduct integrative targetingactive enhancer histone H3 lysine 27 acetylation(H3K27ac)chromatin immunoprecipitation coupled with high-throughput and transcriptomic sequencing analysis to explore the potential epigenetic pathomechanisms of active enhancers of NAFLD exacerbation upon LBP ***,LBP^(-/-)reduced the inflammatory response but markedly aggravated high-fat diet(HFD)-induced NAFLD in rats,with pronounced alterations in the histone acetylome and regulatory *** total,1128 differential enhancer-target genes significantly enriched in cholesterol and fatty acid metabolism were identified between wild-type(WT)and LBP^(-/-)NAFLD *** on integrative analysis,CCAAT/enhancer-binding proteinβ(C/EBPβ)was identified as a pivotal transcription factor(TF)and contributor to dysregulated histone acetylome H3K27ac,and the lipid metabolism gene SCD was identified as a downstream effector exacerbating *** study not only broadens our understanding of the essential role of LBP in the pathogenesis of NAFLD from an epigenetics perspective but also identifies key TF C/EBPβand functional gene SCD as potential regulators and therapeutic targets.

关键词： Non-alcoholic fatty liver disease C/EBPβ Lipopolysaccharide-binding protein H3K27ac Integrative analysis Enhancer

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ONE-STEP PROCESS TO MAKE ELECTRICALLY CONDUCTIVE THERMOPLASTIC VULCANIZATES FILLED WITH MWCNTs

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Chinese Journal of Polymer Science 2012年第1期30卷 138-142页

作者： Hao-sheng Wang Xiao-hong Zhang Yi-lei zhu Zhi-hai Song jin-liang Qiao College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China SINOPEC Beijing Research Institute of Chemical Industry Beijing 100013 China

Electrically conductive thermoplastic vulcanizates（TPVs） filled by multi-walled carbon nanotubes（MWCNTs） are prepared by a simple one-step melt mixing process,based on linear low density polyethylene（LLDPE） and ultrafme full-vulcanized rubber particles（UFRP）.An ideal morphology with controlled localization of MWCNTs in continuous LLDPE matrix and appropriate size of finely-dispersed UFRP can be achieved at the same *** controlled localization of MWCNTs in the continuous phase facilitates the formation of conductive pathway,and thus the volume resistivity of the as-prepared LLDPE/UFRP/MWCNTs thermoplastic vulcanizates is significantly *** results show that both the blend ratio of LLDPE/UFRP and the loading of MWCNTs have remarkable effect on the volume ***, the electrically conductive TPVs exhibit good mechanical properties duo to the fine dispersion of UFRP in *** added MWCNTs are capable of imparting reinforcement effects to thermoplastic vulcanizates with just a slight loss of stretchability and elasticity.

关键词： Thermoplastic vulcanizates Multi-walled carbon nanotubes Ultrafine full-vulcanized rubber particles Volume resistivity Mechanical properties

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Leg compliance control of a hexapod robot based on improved adaptive control in different environments

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Journal of Central South University 2015年第3期22卷 904-913页

作者：朱雅光金波李伟 State Key Laboratory of Fluid Power Transmission and Control (Zhejiang University)

Considering the compliance control problem of a hexapod robot under different environments, a control strategy based on the improved adaptive control algorithm is proposed. The model of robot structure and impedance control is established. Then, the indirect adaptive control algorithm is derived. Through the analysis of its parameters, it can be noticed that the algorithm does not meet the requirements of the robot compliance control in a complex environment. Therefore, the fuzzy control algorithm is used to adjust the adaptive control parameters. The satisfied system response can be obtained based on the adjustment in real time according to the error between input and output. Comparative experiments and analysis of traditional adaptive control and the improved adaptive control algorithm are presented. It can be verified that not only desired contact force can be reached quickly in different environments, but also smaller contact impact and sliding avoidance are guaranteed, which means that the control strategy has great significance to enhance the adaptability of the hexapod robot.

关键词： hexapod robot tip-point force adaptive control fuzzy control adaptability

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Physics-guided Deep Learning for Power System State Estimation

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Journal of Modern Power Systems and Clean Energy 2020年第4期8卷 607-615页

作者： lei Wang Qun Zhou Shuangshuang jin Department of Electrical and Computer Engineering University of Central FloridaOrlandoFL 32816USA School of Computing Clemson UniversityNorth CharlestonSC 29405USA

In the past decade,dramatic progress has been made in the field of machine *** paper explores the possibility of applying deep learning in power system state ***,physics-based models are used including weighted least square(WLS)or weighted least absolute value(WLAV).These models typically consider a single snapshot of the system without capturing temporal correlations of system *** this paper,a physics-guided deep learning(PGDL)method is ***,inspired by autoencoders,deep neural networks(DNNs)are used to learn the temporal *** estimated system states from DNNs are then checked against physics laws by running through a set of power flow ***,the proposed PGDL is both data-driven and *** accuracy and robustness of the proposed PGDL method are compared with traditional methods in standard IEEE *** show promising results and the applicability is further discussed.

关键词： State estimation deep learning deep neural network(DNN) temporal correlation power system

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Bilateral ureteral reimplantation in a patient with an intraperitoneal ectopic bipenis:A case report

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World Journal of Clinical Cases 2022年第9期10卷 2878-2882页

作者： ya-Tao Jia Bao-lei Shi Jie Zhang Ying-Yi Li Jiang zhu Department of Urology Baoji People's HospitalBaoji 721000Shannxi ProvinceChina

BACKGROUND Diphallia is a highly uncommon congenital urogenital abnormality and a few connected reports have been ***,no case of intraabdominal heterotopic diphallus has been documented to *** the present study,we present a rare case of intraperitoneal ectopic *** SUMMARY A 49-year-old man was hospitalized with the chief complaint of hydronephrosis of both kidneys,which was discovered three days earlier through regular physical examination performed using urological ultrasound without significant lumbar or abdominal pain or bladder *** examination showed normal external penile development,bilateral testes located on the left side of the scrotum,and a fused *** plain and enhanced computed tomography suggested bilateral hydronephrosis,bilateral ureters opened to the left side of the bladder wall;an intrapelvic soft tissue shadow on the left side of the bladder was considered a germline malformation called bipenis(hidden penis in the abdominal cavity).Based on the urological plain and enhanced computed tomography results,a 49-year-old man was diagnosed with bipenis(one hidden in the abdominal cavity).Ectopic penile compression produced bilateral ureteral dilatation and *** ectopic penis was amputated and partially removed during surgery,and bilateral ureteral replantation was successfully *** a 2-mo follow-up,the patient was very satisfied with the operation,there was no significant hydronephrosis in both kidneys,and urination and erectile function were *** To our knowledge,this is the first report of diphallia with an intraperitoneal ectopic *** tomography or magnetic resonance imaging can be used to assess the associated internal anomalies before *** pathological findings are the gold standard for the diagnosis.

关键词： Diphallia Penis duplication Intraperitoneal ectopic penis Ureteral reim-plantation Case report

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P-block基金属原子在TiO_(2)(110)表面的吸附及扩散性质研究

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原子与分子物理学报 2025年第6期42卷 17-21页

作者：丁雅妮郭梦雨王博涵贾晨怡王美娟史金磊郑州师范学院物理与电子工程学院郑州市低维纳米材料重点实验室郑州450044

基于密度泛函理论的第一性原理计算方法,我们系统研究了p-block金属原子(Sn,Sb,Bi和Te)在TiO_(2)(110)表面上的吸附及扩散行为.计算结果表明Sn,Sb及Bi金属原子在TiO_(2)(110)表面上具有较大的吸附能和较高的扩散势垒,倾向于形成分散的p-... 详细信息

基于密度泛函理论的第一性原理计算方法,我们系统研究了p-block金属原子(Sn,Sb,Bi和Te)在TiO_(2)(110)表面上的吸附及扩散行为.计算结果表明Sn,Sb及Bi金属原子在TiO_(2)(110)表面上具有较大的吸附能和较高的扩散势垒,倾向于形成分散的p-block单原子,然而对于Te金属原子,由于其与衬底结合能相对较弱且扩散势垒较低而更倾向于形成团簇,该研究结果有助于为实验上构建基于p-block的金属单原子催化剂提供理论依据.

关键词： p-block单原子催化剂吸附及扩散势垒第一性原理计算

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Long-term efficacy of perioperative chemoradiotherapy on esophageal squamous cell carcinoma

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World Journal of Gastroenterology 2010年第13期16卷 1649-1654页

作者： Lv, jin Cao, Xiu-Feng zhu, Bin Ji, Lv Tao, lei Wang, Dong-Dong Nanjing Med Univ Affiliated Nanjing Hosp 1 Dept Surg Ctr Oncol Nanjing 210006 Jiangsu Peoples R China

AIM: To investigate the role of perioperative chemoradiotherapy (CRT) in the treatment of locally advanced thoracic esophageal squamous cell carcinoma (ESCC). METHODS: Using preoperative computed tomography (CT)-based staging criteria, 238 patients with ESCC (stage ⅡⅢ ) were enrolled in this prospective study between January 1997 and June 2004. With informed consent, patients were randomized into 3 groups: preoperative CRT (80 cases), postoperative CRT (78 cases) and surgery alone (S) (80 cases). The 1-, 3-, 5and 10-year survival were followed up. Progressionfree survival (PFS) was chosen as the primary endpoint by treatment arm measured from study entry until documented progression of disease or death from any cause. The secondary endpoint was overall survival (OS) determined as the time (in months) between the date of therapy and the date of death. Other objectives were surgical and adjuvant therapy ***: With median follow-up of 45 mo for all the enrolled patients, significant differences in the 1-, 3-, 5-, 10-year OS (91.3%, 63.5%, 43.5%, 24.5% vs 91%, 62.8%, 42.3%, 24.4% vs 87.5%, 51.3%, 33.8%, 12.5%, P = 0.0176) and PFS (89.3%, 61.3%, 37.5%, 18.1% vs 89.1%, 61.1%, 37.2%, 17.8% vs 84.5%, 49.3%, 25.9%, 6.2%, P = 0.0151) were detected among the 3 arms. There were no significant differences in OS and PFS between the preoperative CRT and postoperative CRT arm (P > 0.05). For the patients who had radical resection, significant differences in median PFS (48 mo vs 61 mo vs 39.5 mo, P = 0.0331) and median OS (56.5 mo vs 72 mo vs 41.5 mo, P = 0.0153) were detected among the 3 arms, but there were no significant differences in OS and PFS between the preoperative CRT and postoperative CRT arm (P > 0.05). The local recurrence rates in the preoperative CRT, postoperative CRT group and S group were 11.3%, 14.1% and 35%, respectively (P < 0.05). No significant differences were detected among the 3 groups when comparing complications but tended to be in favor

关键词： Esophageal cancer Surgery Esophagectomy Chemotherapy Radiation therapy

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The genesis and resource potential of gold deposits in the Liaodong Peninsula

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Science China Earth Sciences 2024年第3期67卷 657-672页

作者： Rixiang zhu jin-Hui yaNG Gongwen WANG Qingdong ZENG Guoqiang XUE Tao XU Xinghui LI Peng ZHANG Da lei Guang zhu State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China Shenyang Center China Geological SurveyShenyang 110034China School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009China

Plenty of gold deposits related to Late Mesozoic craton destruction are widely distributed in eastern North China Craton. However, significant differences in research degrees, ore-forming characteristics, and proven reserves exist among different regions in the North China Craton. The Liaodong Peninsula has similar regional geological characteristics to those of the Jiaodong Peninsula, with both experiencing craton destruction during Late Mesozoic, but the two areas have substantial differences in terms of gold mineralization and the proven gold resources. Based on regional geology, Mesozoic magmatictectonic evolution and ore geology, combined with integrated geophysical exploration and big data AI resource prediction, in this paper, we propose that the ore-forming materials of Late Mesozoic gold deposits in Liaodong were mainly originated from mantle-derived melts and/or fluids induced by craton destruction. The gold deposits were primarily controlled by NE-NNEtrending faults, mainly classified as fracture-controlled altered rock-type and sulfide-bearing quartz vein-type. Moreover, our study predicts that the yalu River fault zone and its related secondary faults, as well as the periphery and deeper parts of known goldfields, are the important regions for future gold resource exploration. The yalu River metallogenic belt has an enormous potential for gold resources, and the Liaodong Peninsula has a potential to add thousands of tons of gold resources.

关键词： Liaodong Peninsula Gold deposit Integrated geophysical exploration Prospecting potential Direction for prospecting breakthroughs

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