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Study of the continuum removal method for the Moon Mineralogy Mapper(M^3) and its application to Mare Humorum and Mare Nubium

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Research in Astronomy and Astrophysics 2016年第7期16卷 133-142页

作者： Xun-Yu Zhang zi-yuan ouyang Xiao-Meng Zhang yuan Chen Xiao Tang Ao-Ao Xu Ze-Sheng Tang Yun-Zhao Wu Space Science Institute Macao University of Science and Technology Macao 00853 China National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210023 China Key Laboratory of Planetary Sciences Chinese Academy of Sciences Nanjing 210008 China

The absorption band center of visible and near infrared reflectance spectra is a key spectral parameter for lunar mineralogical studies, especially for the mafic minerals（olivine and pyroxene） of mare basalts, which have two obvious absorption bands at 1000 nm（Band I） and 2000 nm（Band II）. Removal of the continuum from spectra, which was developed by Clark and Roush and used to isolate the particular absorption feature, is necessary to estimate this parameter. The Moon Mineralogy Mapper（M3） data are widely used for lunar mineral identification. However, M3 data show a residual thermal effect, which interferes with the continuum removal, and systematic differences exist among optical data taken during different optical periods. This study investigated a suitable continuum removal method and compared the difference between two sets of M3 data taken during different optical periods, Optical Period 1B（OP1B）and Optical Period 2A（OP2A）. Two programs for continuum removal are reported in this paper. Generally,a program respectively constructs two straight lines across Band I and Band II to remove the continuum,which is recommended for locating band centers, because it can find the same Band I center with different right endpoints. The optimal right endpoint for continuum removal is mainly dominated by two optical period data at approximately 2480 and 2560 nm for OP1 B and OP2 A data, respectively. The band center values derived from OP1 B data are smaller than those derived from OP2 A data in Band I but larger in Band II, especially for the spectra using longer right endpoints（〉2600 nm）. This may be due to the spectral slopes of OP1 B data being steeper than those of OP2 A data in Band I but gentler in Band II. These results were applied to Mare Humorum and Mare Nubium, and the measurements were found to mainly vary from intermediate- to high-Ca pyroxene.

关键词： techniques spectroscopic methods data analysis instrumentation spectrographs

Progress and prospects of chiral nanomaterials for biosensing platforms

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Rare Metals 2024年第6期43卷 2469-2497页

作者： Yu-Cheng ouyang Bong-Jun Yeom yuan Zhao Wei Ma School of Food Science and Technology State Key Laboratory of Food Science and ResourcesJiangnan UniversityWuxi 214122China Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnanUniversityWuxi214122China Department of Chemical Engineering Hanyang UniversitySeoul04763RepublicofKorea

Chiral nanomaterials have distinct chiroptical properties of preferential interactions to circularly polarized ***-based biosensors have emerged for detection of biomolecules,ions and cells in recent *** review provides an extensive overview of biosensors based on chiral nanomaterials,starting with approaches to chiral nanomaterials construction in terms of fabrication *** of chiral nanomaterials and their biosensor applications is presented for different material types,with special emphasis on the role and importance of material properties and signal generation in *** assessed the technological prospects of the emerging fields of chiral construction,circularly polarized luminescence,Raman optical activity and so on along with their current *** venues for future research on chiral nanomaterials in fabrication,biosensing,disease diagnosis and treatment are also presented in the review.

关键词： Chiral nanomaterials Circular dichroism Biosensors

Reliable calculations of nuclear binding energies by the Gaussian process of machine learning

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Nuclear Science and Techniques 2024年第6期35卷 130-144页

作者： zi-Yi yuan Dong Bai Zhen Wang Zhong-Zhou Ren School of Physics Science and Engineering Tongji UniversityShanghai 200092China College of Science Hohai UniversityNanjing 211100China Key Laboratory of Advanced Micro-Structure Materials Ministry of EducationShanghai 200092China

Reliable calculations of nuclear binding energies are crucial for advancing the research of nuclear physics. Machine learning provides an innovative approach to exploring complex physical problems. In this study, the nuclear binding energies are modeled directly using a machine-learning method called the Gaussian process. First, the binding energies for 2238 nuclei with Z > 20 and N > 20 are calculated using the Gaussian process in a physically motivated feature space, yielding an average deviation of 0.046 MeV and a standard deviation of 0.066 MeV. The results show the good learning ability of the Gaussian process in the studies of binding energies. Then, the predictive power of the Gaussian process is studied by calculating the binding energies for 108 nuclei newly included in AME2020. The theoretical results are in good agreement with the experimental data, reflecting the good predictive power of the Gaussian process. Moreover, the α-decay energies for 1169 nuclei with 50 ≤ Z ≤ 110 are derived from the theoretical binding energies calculated using the Gaussian process. The average deviation and the standard deviation are, respectively, 0.047 MeV and 0.070 MeV. Noticeably, the calculated α-decay energies for the two new isotopes ^ (204 )Ac(Huang et al. Phys Lett B 834, 137484(2022)) and ^ (207) Th(Yang et al. Phys Rev C 105, L051302(2022)) agree well with the latest experimental data. These results demonstrate that the Gaussian process is reliable for the calculations of nuclear binding energies. Finally, the α-decay properties of some unknown actinide nuclei are predicted using the Gaussian process. The predicted results can be useful guides for future research on binding energies and α-decay properties.

关键词： Nuclear binding energies decay Machine learning Gaussian process

Membrane-less MoO_(3-x)@TiO_(2)-bromine battery with excellent rate capability and cyclic stability

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Journal of Energy Chemistry 2024年第6期93卷 316-321,I0008页

作者： Wenjie Huang Hui Wang Bin yuan Liuzhang ouyang Lichun Yang Min Zhu School of Materials Science and Engineering Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou 510640GuangdongChina

Bromine has attracted significant attention as a cathode material for aqueous batteries due to its high reduction potential of 1.05 V(Br_(3)^(-)+2e~-■3Br~-),impressive theoretical specific capacity of 223 mA h g^(-1),and rapid reaction kinetics in the ***,searching for compatible anode materials to match with bromine has posed a challenge due to its highly corrosive *** this study,we developed oxygen-deficient MoO_(3) with TiO_(2) coating(referred to as MoO_(3-x)@TiO_(2))as an anode material to pair with a bromine cathode in static full *** oxygen deficiency contributes to enhanced electronic and protonic diffusion within the MoO_(3-x)lattice,while the TiO_(2) coating mitigates structural dissolution and proton trapping during *** MoO_(3-x)@TiO_(2) demonstrates fast charge storage kinetics and excellent resistance to bromine *** impressive compatibility between MoO_(3-x)@TiO_(2) and bromine enables the construction of membrane-less full batteries with exceptional rate capability and cyclic *** MoO_(3-x)@TiO_(2)-bromine battery achieves an energy density of70.8 W h kg^(-1)at a power density of 328.1 W kg^(-1),showcasing an impressive long-term cyclic life of 20,000 *** study provides valuable insights for the development of high-performance aqueous secondary batteries.

关键词： Molybdenum trioxide Oxygen deficiency TiO_(2)coating Compatibility Bromine-based battery

Flow Boiling Heat Transfer Characteristics and Delayed Dry-Out Ability of Non-Azeotropic Mixtures R245fa/R134a in Microchannels

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Journal of Thermal Science 2024年第3期33卷 1174-1188页

作者： LU Yongjie LING Yongjun ZHUANG yuan LI Chenyang ouyang Hongsheng HAN Xiaohong Key Laboratory of Refrigeration and Cryogenic Technology of Zhejiang Province Institute of Refrigeration and CryogenicsZhejiang UniversityHangzhou310007China Zhejiang Zhongguang Electrical Co. Ltd.Lishui323000China State Key Lab for Fluorine Greenhouse Gases Replacement and Control Treatment Zhejiang Research Institute of Chemical IndustryHangzhou310014China

Microchannel flow boiling heat transfer has the advantages of strong heat dissipation capacity,good temperature uniformity,and compact *** is an excellent way to thermally manage electronic devices,but when the heat flux exceeds CHF(Critical Heat Flux),the heat transfer performance deteriorates as the working fluid dries ***-azeotropic mixtures have the potential to effectively delay or avoid dry-out during the boiling process due to their temperature slide characteristics which causes the mass transfer *** understand the influence of non-azeotropic mixtures on microchannel flow boiling,using the phase-change microchannel heat sink as the research object,the experiments on the flow boiling heat transfer performance of R245fa/R134a mixtures under different working conditions were carried out,and the characteristics of flow boiling heat transfer were obtained under the different working conditions,and comparison was developed with those of pure substance *** results demonstrated that a small amount of low-boiling-point components in the high-boiling-point working fluid inhibited boiling heat transfer to some extent,and lowered the average heat transfer coefficient under the non-dryout condition slightly lower than that of the pure substance;however,it also effectively delayed the onset of local dry-out and prevented significant deterioration in thermal transfer performance under the lower mass flow rate and higher heat flux,which could enhance the heat sink's stability.

关键词： microchannel flow boiling non-azeotropic mixture heat transfer characteristics dry-out

Efficient knowledge distillation for hybrid models:A vision transformer‐convolutional neural network to convolutional neural network approach for classifying remote sensing images

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IET Cyber-Systems and Robotics 2024年第3期6卷 1-22页

作者： Huaxiang Song Yuxuan yuan Zhiwei ouyang Yu Yang Hui Xiang School of Geography Science and Tourism Hunan University of Arts and ScienceChangdeHunanChina

In various fields,knowledge distillation(KD)techniques that combine vision transformers(ViTs)and convolutional neural networks(CNNs)as a hybrid teacher have shown remarkable results in ***,in the realm of remote sensing images(RSIs),existing KD research studies are not only scarce but also lack *** issue significantly impedes the deployment of the notable advantages of ViTs and *** tackle this,the authors introduce a novel hybrid‐model KD approach named HMKD‐Net,which comprises a CNN‐ViT ensemble teacher and a CNN *** to popular opinion,the authors posit that the sparsity in RSI data distribution limits the effectiveness and efficiency of hybrid‐model knowledge *** a solution,a simple yet innovative method to handle variances during the KD phase is suggested,leading to substantial enhancements in the effectiveness and efficiency of hybrid knowledge *** authors assessed the performance of HMKD‐Net on three RSI *** findings indicate that HMKD‐Net significantly outperforms other cuttingedge methods while maintaining a significantly smaller ***,HMKD‐Net exceeds other KD‐based methods with a maximum accuracy improvement of 22.8%across various *** ablation experiments indicated,HMKD‐Net has cut down on time expenses by about 80%in the KD *** research study validates that the hybrid‐model KD technique can be more effective and efficient if the data distribution sparsity in RSIs is well handled.

关键词： hybrid‐model knowledge distillation remote sensing image classification vision transformer

Current trends and hotspots of depressive disorders with colorectal cancer:A bibliometric and visual study

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World Journal of Gastrointestinal Oncology 2024年第8期16卷 3687-3704页

作者： zi-Wei Yan Ying-Nan Liu Qian Xu yuan yuan Tumor Etiology and Screening Department of Cancer Institute and General Surgery The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina Laboratory of GI Cancer Etiology and Prevention in Liaoning Province The First Hospital of China Medical UniversityShenyang 110001Liaoning ProvinceChina

BACKGROUND Depression is strongly associated with colorectal cancer(CRC).Few bibliometric analyses have systematically summarized the research focus and recent progress in this *** To determine the research status and hotspots by bibliometric analysis of relevant publications on the relationship between CRC and *** Articles on depression in CRC patients were collected from the Web of Science Core *** and VOSviewer software were used to visualize bibliometric *** From 2001 to 2022,Supportive Care in Cancer,the United States,Tilburg University,and Mols were the most productive and influential journal,country,institution,and author ***-occurrence cluster analysis of keywords placed quality of life,anxiety,and psychological stress in the center of the visual network *** clustering was performed for the clusters with studies of the relevant mechanism of action,which showed that:(1)Cytokines have a role essential for the occurrence and development of depressive disorders in CRC;(2)MicroRNAs have a role essential for the development of depressive disorders in CRC;(3)Some anticancer drugs have pro-depressant activity;and(4)Selective serotonin reuptake inhibitors have both antitumor and antidepressant *** Life quality and psychological nursing of the cancer population were key *** roles of cytokines and microRNAs,the pro-depression activity of anticancer drugs and their antitumor properties deserve in-depth study.

关键词： Depression Colorectal cancer Bibliometric analysis Cytokines Drugs Mechanism

Ferritinophagy: A new idea for liver diseases regulated by ferroptosis

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Hepatobiliary & Pancreatic Diseases International 2024年第2期23卷 160-170页

作者： zi-Bing Qian Jun-Feng Li Wan-yuan Xiong Xiao-Rong Mao The First Clinical Medical College of Lanzhou University Lanzhou 730000China Institute of Infectious Diseases The First Hospital of Lanzhou UniversityLanzhou 730000China Department of Infectious Disease The First Hospital of Lanzhou UniversityLanzhou 730000China

Background:The discovery of regulatory cell death has led to a breakthrough in the therapeutic *** forms of cell death,such as necrosis,apoptosis,pyroptosis,autophagy,and ferroptosis,play an important role in the development of liver *** general,more than one form of cell death pathways is responsible for the disease ***,it is particularly important to study the regulation and interaction of various cell death forms in liver *** sources:We performed a PubMed search up to November 2022 with the following keywords:ferritinophagy,ferroptosis,and liver *** also used terms such as signal path,inducer,and inhibitor to supplement the query ***:This review summarized the basic characteristics of ferritinophagy and ferroptosis and the regulation of ferroptosis by ferritinophagy and reviewed the key targets and treatment strategies of ferroptosis in different liver ***:Ferritinophagy is a potential therapeutic target in ferroptosis-related liver diseases.

关键词： Ferritinophagy Ferroptosis Liver disease

Promoting electrocatalytic nitrogen reduction to ammonia via dopant boron on two-dimensional materials

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Rare Metals 2024年第10期43卷 5117-5125页

作者： Ya-Hui Cui Wen-Cheng ouyang Ai-Jun Gao Chang-yuan Yu Li-Peng Zhang State Key Laboratory of Organic-Inorganic Composites College of Chemical EngineeringBeijing University of Chemical Technology College of Materials Science and Engineering Beijing University of Chemical Technology College of Life Science and Technology Beijing University of Chemical Technology

Electrocatalytic nitrogen reduction reaction(NRR) is a key process for producing energy efficient and environment friendly ammonia. Boron-doped two-dimensional materials are highly promising as NRR ***, the interaction between doped boron and matrix materials on NRR catalytic performance is still unclear,which is limiting the development of catalysts containing boron for NRR. Here, NRR on different boron-doped twodimensional(2D) materials was explored by first principle theory. It is found that adsorption energy of intermediate*NNH(E*NNH) can be used as a descriptor to characterize the catalytic activity for NRR. Boron-adsorbed black phosphorus(B-BP) is demonstrated showing excellent NRR catalytic activity and suppressing hydrogen evolution reaction. It is disclosed that the excellent catalytic performance of boron-doped structures comes from a proper quantitatively electron transfer(0.8e) between nitrogen in*NNH and the active site boron atom. This work not only established a descriptor for NRR catalytic activity on B-doped 2D materials, but also screened out a potential NRR catalyst. More importantly, the intrinsic reason and mechanism of high catalytic activity of boron-doped structures were proposed. This work provides a design principle for exploring high-performance NRR electrocatalysts containing boron.

关键词： Boron-doped two-dimensional materials Density functional theory Descriptor Electrocatalytic nitrogen reduction reaction