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Recaptured Image Detection Based on Multi-Scale Residual Features of Discriminative Regions

IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS 2025年第4期E108D卷 384-391页

作者： Liu, Lanxi Yang, Pengpeng du, suwen Abdullahi, Sani M. China Three Gorges Univ Key Lab Geol Hazards Three Gorges Reservoir Area Yichang 443002 Hubei Peoples R China China Three Gorges Univ Coll Comp & Informat Technol Yichang 443002 Hubei Peoples R China Univ Southern Denmark Maersk McKinney Moller Inst Campusvej 55 DK-5230 Odense Denmark

The rapid development of digital cameras and smartphones makes it easy for people to record the information displayed in the media and obtain high-quality recaptured images, which would pose a serious threat to copyright protection, identity authentication, and public social security. Therefore, detecting recaptured images is an urgent problem in the multimedia forensics community. Most existing methods for detecting recaptured images focus on mining specific traces left in the images during the recapture operation. However, these traces may be covered up in certain environmental settings. In order to address this issue, we explore the internal differences in image statistics between the original and recaptured images, which do not depend on specific traces, and construct a more robust feature for detecting recaptured images. Firstly, the most discriminative regions are extracted based on the measure of pixel dispersion. Secondly, a multi-scale residual feature is constructed by calculating the first-order statistics of residual images to enhance the robustness against various recapture environments. Lastly, binary grey wolf optimization and particle swarm optimization (BGWOPSO) feature selection method is used to reduce dimensions in the features space, which could keep a good balance between performance and computational complexity. Experimental results on three public databases demonstrate that our proposed method significantly improves detection performance, especially on the most difficult-to-detect ICL-COMMSP database.

关键词： image forensics recaptured image detection discriminative region multi-scale residual image statistic

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ForensiCam-215K: A Large Scale Image and Video Dataset for Forensic Analysis

ForensiCam-215K: A Large Scale Image and Video Dataset for F...

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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： suwen du Pengpeng Yang Daniele Baracchi Jinglian Jin Dasara Shullani Alessandro Piva Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering China Three Gorges University Yichang China Department of Information Engineering University of Florence Florence Italy

ISBN: (数字)9798350368741

ISBN: (纸本)9798350368758

Determining the origin of a digital image or video, namely device source identification, is widely used in courtroom evidence and copyright protection. Currently, device source identification primarily focuses on images captured using single camera with default settings. However, with the advancement of imaging technology, there is a large number of smartphones equipped with multiple cameras and various shooting modes for acquiring images, which may pose a significant challenge to device source identification. Therefore, to assess the performance of image source identification algorithm for modern smartphones and promote further research, it is crucial to build a dataset of image and video captured by modern smartphones. In this paper, we present a large-scale image and video dataset for forensic analysis, ForensiCam-215K. The dataset includes over 215K media contents captured by 130 modern smartphones of 10 major brands. We used the latest equipment to capture images from the main, wide-angle, and telephoto cameras in six different shooting modes, and the media were collected under a strictly controlled procedure to reduce the bias caused by differences in the acquisition process between different devices. Additionally, we used the Photo Response Non-Uniformity (PRNU) method to perform device source identification tests on the dataset. The results indicate that device source identification is a challenging task especially for images and videos captured by smartphones with multiple cameras and various shooting modes. The dataset will be released as open-source and freely available for use by the multimedia forensics research community at https://***/dswdsw21072/ForensiCam-215K.

关键词： Performance evaluation Forensics Signal processing algorithms Media Streaming media Signal processing Cameras Object recognition Speech processing Smart phones

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Joint Inversion of Receiver Function and Surface Wave Dispersion by Hamiltonian

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SEISMOLOGICAL RESEARCH LETTERS 2023年第1期94卷 369-384页

作者： suwen, Junliu Chen, Qi-Fu du, Nanqiao Chinese Acad Sci Inst Earth Sci Key Lab Earth & Planetary Phys Beijing Peoples R China Chinese Acad Sci Inst Earth Sci Beijing Peoples R China Univ Chinese Acad Sci Coll Earth & Planetary Sci Beijing Peoples R China Chinese Acad Sci Inst Geol & Geophys Key Lab Petr Resources Res Beijing Peoples R China Univ Toronto Dept Earth Sci Toronto ON Canada

We have proposed a new probabilistic inversion method to perform the joint inversion of receiver function and surface wave dispersion data. In this method, we apply the Hamiltonian dynamics in the Bayesian framework to efficiently sample the posterior probability distribution of this joint inverse problem. This method will lead to nearly 100% acceptance of each sample in theory. Semianalytical derivatives of both the data -sets to the model parameters (including elastic parameters, density, and the thickness of each layer) are used to speed up this algorithm. Finally, we apply our method to both synthetic data and real data. The result shows that the velocity model can be recovered well within a much smaller number of samplings than the traditional Markov chain Monte Carlo method.

关键词： Inverse problems

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Knockdown of NduFAF6 inhibits breast cancer progression via promoting mitophagy and apoptosis

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CANCER BIOLOGY & THERAPY 2025年第1期26卷 2445220页

作者： Wu, Shang Ma, Xindi Zhang, Xiangmei du, Kaiye Shi, Chao Almaamari, Ahmed Ali Han, Boye Su, suwen Liu, Yunjiang Hebei Med Univ Hosp 4 Dept Breast Ctr Shijiazhuang Hebei Peoples R China Hebei Med Univ Hebei Prov Key Lab Tumor Microenvironm & Drug Resi Shijiazhuang Peoples R China Hebei Med Univ Hosp 4 Dept Res Ctr Shijiazhuang Hebei Peoples R China Hebei Med Univ Hosp 4 Radiotherapy Dept Shijiazhuang Hebei Peoples R China Hebei Med Univ Dept Pharmacol Key Lab Neural & Vasc Biol Key Lab New Drug Pharmacol & ToxicolMinist Educ Shijiazhuang Peoples R China Hebei Med Univ Hosp 4 169 Tianshan St Shijiazhuang Hebei Peoples R China

BackgroundWhile NduFAF6 is implicated in breast cancer, its specific role remains *** expression levels and prognostic significance of NduFAF6 in breast cancer were assessed using The Cancer Genome Atlas, Gene Expression Omnibus, Kaplan-Meier plotter and cBio-Portal databases. We knocked down NduFAF6 in breast cancer cells using small interfering RNA and investigated its effects on cell proliferation and migration ability. We performed gene expression analysis and validated key findings using protein analysis. We also assessed mitochondrial activity and cellular ***6 was highly expressed in breast cancer, which was associated with a poorer prognosis. Knockdown of NduFAF6 reduced the proliferation and migration ability of breast cancer cells. Transcriptome analysis revealed 2,101 differentially expressed genes enriched in apoptosis and mitochondrial signaling pathways. Western blot results showed NduFAF6 knockdown enhanced apoptosis. In addition, differential gene enrichment analysis was related to mitochondrial signaling pathways, and western blot results verified that mitophagy was enhanced in NduFAF6 knockdown breast cancer cells. JC-1 assay also showed that mitochondrial dysfunction and reactive oxygen species content were increased after knocking down NduFAF6. In addition, basal and maximal mitochondrial oxygen consumption decreased, and intracellular glycogen content *** of NduFAF6 resulted in apoptosis and mitophagy in breast cancer cells and NduFAF6 may be a potential molecular target for breast cancer therapy.

关键词： Breast cancer NduFAF6 prognosis apoptosis mitophagy

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LncRNA PART1 promotes malignant biological behaviours associated with head and neck cancer cells via synergistic action with FUT6

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CANCER CELL INTERNATIONAL 2024年第1期24卷 185页

作者： Yao, Yanheng Zhang, Yuxin Shi, Jiyuan Xu, Xiling Gao, Yunran Bai, suwen Hu, Qin Wu, Jing du, Juan Anhui Med Univ Sch Basic Med Sci 81 Meishan Rd Hefei 230032 Anhui Peoples R China Chinese Univ Hong Kong Affiliated Hosp 2 Shenzhen & Longgang Dist Peoples Hosp Shenzhen Gua Sch Med Shenzhen 518172 Peoples R China Chinese Univ Hong Kong Ciechanover Inst Precis & Regenerat Med Sch Med Shenzhen 518172 Guangdong Peoples R China Anhui Med Univ Affiliated Hosp 1 218 JiXi Ave Hefei 230022 Anhui Peoples R China

The aim of this study was to determine the role of lncRNA PART1 and downstream FUT6 in tumorigenesis and progression of head and neck cancer (HNC). Bioinformatics analysis and qRT-PCR revealed that lncRNA PART1 was expressed at low levels in HNC patients. The proliferation, apoptosis, migration and flow cytometry results showed that low expression of lncRNA PART1 inhibited apoptosis and promoted HNC cell migration and proliferation. In addition, animal experiments have also shown that low expression of lncRNA PART1 can promote tumor growth. LncRNA PART1 overexpression promoted apoptosis and inhibited HNC cell migration and proliferation. Through bioinformatics analysis, FUT6 was found to be expressed at low levels in HNC and to be correlated with patient survival. Immunohistochemical and qRT-PCR results revealed that FUT6 was underexpressed in tumour tissues and HNC cells. Cell and animal experiments showed that overexpression of FUT6 could inhibit tumour proliferation and migration. Bioinformatics analysis revealed that lncRNA PART1 was positively correlated with FUT6. By qRT-PCR and western blot, we observed that after knockdown of lncRNA PART1, both the mRNA and protein expression levels of FUT6 were reduced. The above results indicated that lncRNA PART1 and FUT6 play an important role in HNC, and that lncRNA PART1 affected the development of tumor by downstream FUT6.

关键词： Head and neck cancer LncRNA PART1 FUT6 Apoptosis Proliferation

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Preparation and performance of silver-incorporated antibacterial amidoximated electrospun nanofiber for uranium extraction from seawater

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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 2022年第1期331卷 427-438页

作者： Sun, Ruopei Qu, Chang Jiang, Chao du, Ziyao Mo, Huilian Wang, Jing Chen, suwen Lanzhou Univ Sch Nucl Sci & Technol Lanzhou 730000 Gansu Peoples R China Lanzhou Univ Sch Stomatol Lanzhou 730000 Gansu Peoples R China

To avoid the interference of biofouling on the adsorbents towards uranium extraction from seawater, a silver-incorporated antibacterial amidoximated nanofiber adsorbent (PAO@AgNP) was designed and prepared via electrospinning in this study. The uranium adsorption experiments conducted in uranium-spiked seawater showed the material possessed good uranium adsorption capacity (11.89 mg/g), and the antibacterial experiments demonstrated that PAO@AgNP could effectively remove Escherichia coli and Staphylococcus aureus, the released silver could interrupt cellular respiration, lead to lipid peroxidation and eventually apoptosis.

关键词： Uranium extraction from seawater Biofouling Electrospinning Amidoximated adsorbents

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Zinc loaded amidoxime polyacrylonitrile porous resin microcapsules for uranium extraction from seawater

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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 2023年第4期332卷 1225-1235页

作者： Wang, Ziyang Meng, Xiangjian du, Ziyao Wang, Siyi Qu, Chang Mo, Huilian Jiang, Chao Wang, Jing Zang, Yu Chen, suwen Lanzhou Univ Frontiers Sci Ctr Rare Isotopes Lanzhou 730000 Gansu Peoples R China Lanzhou Univ Sch Nucl Sci & Technol Lanzhou 730000 Gansu Peoples R China Lanzhou Univ Sch Stomatol Lanzhou 730000 Gansu Peoples R China

In this study, a microcapsule resin grafted with amidoxime group was prepared by phase transformation method, and the microcapsule resin was loaded with zinc as an antibacterial agent. The final preparation of Zn@AO-PAN PMR enhanced the antibacterial ability of Zn@AO-PAN PMR in real seawater based on its good uranium adsorption performance. The theoretical maximum adsorption capacity of Zn@AO-PAN PMR in real seawater could reach 50.30 mg/g. At the same time, the loading of Zn don't lose the adsorption capacity of the resin for U(VI). The antibacterial mechanism of Zn@AO-PAN PMR was explored using MAD.

关键词： Microcapsule resin Antibacterial ability Uranium Seawater

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Preparation of porous amidoximated nanofibers with antibacterial properties, and experiments on uranium extraction from seawater

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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 2023年第3期332卷 669-682页

作者： du, Ziyao Qu, Chang Meng, Xiangjian Wang, Ziyang Mo, Huilian Jiang, Chao Sun, Ruopei Wang, Jing Gong, Tianle Chen, suwen Lanzhou Univ Frontiers Sci Ctr Rare Isotopes Lanzhou 730000 Gansu Peoples R China Lanzhou Univ Sch Nucl Sci & Technol Lanzhou 730000 Gansu Peoples R China Lanzhou Univ Sch Stomatol Lanzhou 730000 Gansu Peoples R China

A novel porous adsorbent, named silver-loaded amidoximated polyacrylonitrile porous nanofibers (Ag@AO-PAN PNF), with both adsorption and antibacterial properties, was designed and synthesized by using polyvinylpyrrolidone (PVP) as porogen, amidoxime group as uranium adsorption group, and nano-silver as antibacterial agent. Results of adsorption experiments in uranium-spiked natural seawater showed that the nanofibers had good adsorption capacity for uranium (the maximum uranium uptake was 34.7 mg/g). On the other hand, Ag@AO-PAN PNF also exhibited excellent antibacterial activity against both E. coli and S. aureus, which could effectively inhibit adhesion of these bacteria to the surface of the adsorbent. The adsorption experiments carried out in bacteria-containing environment also demonstrated that the presence of nano-silver effectively inproved the adsorption capacity of the material towards uranium.

关键词： Uranium extraction from sea water Anti-biofouling Electrospinning

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Macrophages and monocytes mediated activation of oxidative phosphorylation implicated the prognosis and clinical therapeutic strategy of Wilms tumour

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COMPUTATIONAL AND STRUCTURAL BIOTECHNOLOGY JOURNAL 2022年 20卷 3399-3408页

作者： Meng, Jialin Chen, Yonghao Lu, Xiaofan Ge, Qintao Yang, Feixiang Bai, suwen Liang, Chaozhao du, Juan Anhui Med Univ Affiliated Hosp 1 Dept Urol Hefei 230022 Anhui Peoples R China Anhui Med Univ Inst Urol Hefei 230022 Anhui Peoples R China Anhui Med Univ Anhui Prov Key Lab Genitourinary Dis Hefei 230022 Anhui Peoples R China Sichuan Univ Dept Gastroenterol West China Hosp Chengdu 610041 Sichuan Peoples R China China Pharmaceut Univ Res Ctr Biostat & Computat Pharm State Key Lab Nat Med Nanjing 211198 Peoples R China UNISTRA Dept Canc & Funct Genom INSERM CNRSInst Genet & Mol & Cellular Biol F-67400 Strasbourg France Chinese Univ Hong Kong Affiliated Hosp 2 Sch Med Shenzhen 518172 Guangdong Peoples R China

Wilms tumour is the fourth leading cause of paediatric malignancy, but the detailed relationship between the tumour microenvironment and prognosis remains largely unclear. In this research, gene expression profile and clinical information from TARGET and the First Affiliated Hospital of Anhui Medical University were collected. After comparing the prognostic value of the associated immune cells, we established a nomogram to predict the prognosis of Wilms tumour based on monocyte infiltration, macrophage infiltration, stage, and sex. Further results showed that the most significant relationship between matrix metallopeptidase 9 and prognosis or macrophage infiltration. Meanwhile, by gene set enrichment or variation analyses and immunohistochemistry staining, we demonstrated that the most highly enriched hub genes were closely related to the activated oxidative phosphorylation pathway. Finally, through tumour immune dysfunction and an exclusion algorithm, the satisfactory discriminative performance of our nomogram was revealed for predicting the response to clinical therapy. Anti-PD1 therapy is more suitable for Wilms tumour patients with high nomogram points, and chemotherapies are more effective for patients with low nomogram score.(c) 2022 The Authors. Published by Elsevier B.V. on behalf of Research Network of Computational and Structural Biotechnology. This is an open access article under the CC BY-NC-ND license (http://***/licenses/by-nc-nd/4.0/).

关键词： Nomogram Tumor-infiltratingimmunecells Prognosis Wilmstumor Macrophages

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Sorption of U(VI) on Schiff-base functionalized metal-organic frameworks UiO-66-NH2

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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 2021年第2期327卷 811-819页

作者： du, Ziyao Li, Bolin Jiang, Chao Sun, Ruopei Chen, suwen Lanzhou Univ Sch Nucl Sci & Technol Lanzhou 730000 Gansu Peoples R China

A metal-organic framework, UiO-66-NH2, was designed, synthesized and characterized in this study. By conducting solvothermal method, Salicylaldehyde (Sal) and 2,4-dihydroxybenzaldehyde (MHBA) were grafted onto UiO-66-NH2 via post-treatment to obtain the functionalized material UiO-66-Sal and UiO-66-MHBA. The three materials above were characterized, and the effects of solid-liquid ratio, pH, ionic strength, and oscillation time on U(VI) adsorption were studied. The relevant experimental results fitted well with pseudo-second-order kinetic equation and thermodynamic adsorption model.

关键词： U(VI) Metal– organic frameworks (MOFs) Sorption UiO-66-NH2 Schiff-base

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