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The seed germination and seedling phytotoxicity of decabromodiphenyl ethane to tall fescue under citric acid amendment

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ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024年第11期46卷 473页

作者： liu, ruiyuan Xie, Hui Shandong Agr Univ Coll Resources & Environm Tai An 271018 Peoples R China

The novel brominated flame retardant decabromodiphenyl ethane (DBDPE) has biological toxicity, persistence, long-range migration and bioaccumulation ability. However, there is currently little research on the phytotoxicity of DBDPE in plants. The perennial herbaceous plant tall fescue (Festuca elata Keng ex E. B. Alexeev) was selected as the model organism for use in seed germination experiments, and the phytotoxicity of DBDPE in the soil of tall fescue was studied. The results indicated that DBDPE had a significant effect on the germination and growth of tall fescue seedlings. Citric acid reduced the stress caused by DBDPE in plants, effectively alleviating the phytotoxicity of DBDPE in tall fescue. The root vitality and protein content significantly increased after the application of citric acid, increasing by 74.93-183.90%, 146.44-147.67%, respectively. The contents of proline and soluble sugars significantly decreased after the application of citric acid, decreasing by 45.18-59.69% and 23.03%, respectively (P < 0.05). There was no significant difference in superoxide dismutase (SOD) or peroxidase (POD) activity in tall fescue seedlings, and the catalase (CAT) activity and malondialdehyde (MDA) content were significantly lower after the application of citric acid, decreasing by 64.62-67.91% and 29.10-49.80%, respectively (P < 0.05). Tall fescue seedlings bioaccumulated DBDPE, with biological concentration factors (BCFs) ranging from 4.28 to 18.38 and transfer factors (TFs) ranging from 0.43 to 0.54. This study provides theoretical support for the study of the toxicity of DBDPE to plants and offers a research foundation for exploring the phytoremediation of DBDPE-contaminated soil by tall fescue.

关键词： DBDPE Tall fescue Phytotoxicity Citric acid Brominated flame retardant Biological concentration factor

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PEDOT:PSS-based electrochromic materials for flexible and stretchable devices

MATERIALS TODAY ELECTRONICS

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MATERIALS TODAY ELECTRONICS 2023年 4卷

作者： Wang, Zhiqi liu, ruiyuan Soochow Univ Soochow Inst Energy & Mat Innovat Coll Energy Key Lab Adv Carbon Mat & Wearable Energy Technol J Suzhou 215006 Peoples R China Soochow Univ Jiangsu Key Lab Adv Negat Carbon Technol Suzhou 215006 Peoples R China

PEDOT:PSS-based smart electrochromic materials shows fast, real-time and efficient reversible color change due to redox process under influence of electric field. The color changes can directly carry readable visual information by the naked human eyes, showing promising applications in smart display, health monitoring, and energy storage. In this perspective, we summarize the recent progress of PEDOT:PSS-based electrochromic materials and their applications in wearable devices. We start with the electrochromic mechanism, synthesis and properties of various PEDOT:PSS complexes. Flexible and stretchable electrochromic devices, as well as their typical applications are then explored. Finally, we provide an overview of the current challenges and future perspectives for the development of advanced materials engineering and devices application.

关键词： Electrochromic Flexible Stretchable Wearable devices

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Two halogenated flame retardants and cadmium in the soil-rice system: sorption, root uptake, and translocation

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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 2023年第43期30卷 97688-97699页

作者： liu, Xin Xie, Hui Xu, Yuxin liu, ruiyuan Shandong Agr Univ Coll Resources & Environm Tai An 271018 Peoples R China

The migration and transformation of Tetrabromobisphenol A (TBBPA), DechloranePlus (DP), and cadmium in soil-rice system was investigated, and the influence on the quality of two varieties of rice was studied. The degradation half-lives of TBBPA, BBPAs, syn-DP, and anti-DP were 23.18 similar to 26.36 days, 30.14 similar to 36.10 days, 72.96-81.55 days, and 169.06-198.04 days in the soil. TBBPA was gradually degraded to tri-BBPA, di-BBPA, mono-BBPA, and bisphenol A by the debromination. TBBPA and its bromide metabolites could be bioaccumulated in different tissues of rice;mono-BBPA and bisphenol A was easy to accumulate in the stems, and bisphenol A was easy to bioaccumulate in the grain. Comparing with single and compound pollution, there was no significant difference in bioaccumulation factors of two rice species. The grain of NO7 had stronger bioaccumulation ability to mono-BBPA and BPA than NO1, and there is no significant difference in TBBPA. Residual level of DP in the rice: roots > stems > grain;there was no significant difference in bioaccumulation of two varieties of rice. Cadmium was easily bioaccumulated in the roots of rice and translocated to the rice stems and grains. NO7 rice had stronger bioaccumulation and transport capacity than NO1. The effects of the three pollutants on the quality of two varieties of rice varied significantly;cadmium had the greatest effect on the iodine blue value (BV) and amylase activity of the grain. This study proved that selecting rice varieties with low bioaccumulation to polluters can effectively reduce the risk of the food chain harming human health.

关键词： Bioaccumulation Tetrabromobisphenol A Bisphenol A Dechlorane plus Soil-rice system Migration and transformation

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Stability enhancement of silver nanowire-based flexible transparent electrodes for organic solar cells

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MATERIALS TODAY ENERGY 2023年 37卷

作者： Duan, Xiaoli Ding, Yu liu, ruiyuan Ludong Univ Sch Chem & Mat Sci Yantai 264025 Shandong Peoples R China Soochow Univ Soochow Inst Energy & Mat Innovat Coll Energy Key Lab Adv Carbon Mat & Wearable Energy Technol J Suzhou 215006 Peoples R China Soochow Univ Jiangsu Key Lab Adv Negat Carbon Technol Suzhou 215006 Peoples R China

Flexible organic solar cells (OSCs) are one of the most promising power sources for wearable electronics. A high-quality transparent electrode is one of the indispensable components for OSCs because it guarantees sufficient light transparency and electrical conductivity. Silver nanowires (AgNWs) are considered to be an ideal candidate over commercial rigid indium tin oxide as flexible transparent electrodes (FTEs) because of their superior optoelectronic properties, excellent mechanical flexibility, solution treatability, and high compatibility with semiconductors. However, the stability of AgNWs-based FTEs (AgNWs-FTEs) hinders their further application. In this perspective, we provide state-of-the-art solution-processed AgNWs with enhanced stability and their applications in flexible OSCs. We start with a systematic analysis of the failure mechanisms and evaluation methods of AgNWs-FTEs. Then the key reinforced materials are summarized. Next, the main stability enhancement strategies are briefly discussed. Applications of AgNWs-FTEs in flexible and stretchable OSCs are further surveyed. Finally, an outlook on the current status, future challenges, and emerging strategies in this field is presented. (c) 2023 Elsevier Ltd. All rights reserved.

关键词： Flexible organic solar cells Metal nanowires Flexible electronics

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Colorimetric and fluorescent dual-signals probes for naked-eye detection of hydrogen peroxide and applications in milk samples and in vivo

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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023年第1期297卷 122757页

作者： Peng, Ting Ye, Sheng liu, ruiyuan Qu, Jinqing South China Univ Technol Sch Chem & Chem Engn Guangzhou 510640 Peoples R China Southern Med Univ Sch Biomed Engn Guangzhou 510515 Peoples R China

Excessive residual hydrogen peroxide (H2O2) disinfectant in food is harmful to human health. Therefore, it is necessary to develop efficient detection methods for H2O2 detection. In this work, we designed and synthesized five D-A molecules 3a-3e by introducing electron-donor substituents (-OCH3 and -CH3) to the electron-acceptor dicyanoisophorone skeleton in order to find out the suitable probes for H2O2 detection. Among them, two promising probes, 3a and 3c, are screened out according to structure-property relationships. Based on the principle of intramolecular charge transfer (ICT), 3a and 3c express colorimetric and fluorescent dual-signals towards H2O2 with low detection limits (0.20 & mu;M and 0.14 & mu;M) and rapid response (within 20 mins). The reaction mechanism between probes and H2O2 is determined by 1H NMR and HRMS. Density functional theory (DFT) calculations are measured to study the regulation mechanism of structure adjustment on probs performance. Furthermore, a smartphone RGB analysis is utilized as a portable platform for the quantitative detection of H2O2 without complicated instruments, indicating a high efficiency and on-site detection method for H2O2. In addition, probes are applied to detect H2O2 in milk samples, HepG-2 cells and zebrafish, suggesting the promising applications in food samples and physiological systems.

关键词： Fluorescence probe Hydrogen peroxide Dual-signals Naked-eye recognition Food detection

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A high-precision measurement method for driver height of shared cars based on MediaPipe

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ENGINEERING RESEARCH EXPRESS 2025年第2期7卷 025204-025204页

作者： liu, ruiyuan Sun, Wencai Zhang, Zijun Cheng, Lin Ma, Jun Jilin Univ Coll Transportat Changchun 130022 Jilin Peoples R China

Aiming at the current problem that it is difficult to automatically adjust shared car seats according to drivers with different heights, a high-precision measurement method for driver height of shared cars based on MediaPipe applied to the shared car automatic seat adjustment system is proposed. First, the monocular camera is calibrated using Zhang Zhengyou calibration method to obtain accurate intrinsic and extrinsic parameters of the camera. Then, the calibrated camera is used to capture the driver's images. Further, the images are processed by the processing terminal, which detects the key points of the human body in the image utilising MediaPipe and extracts the coordinates of the key points in order to calculate the pixel height of the driver. Finally, the distance between the driver and the camera is measured by the range sensor, and the height of the driver is preliminarily calculated by combining the geometric principle of camera imaging, and the height correction function is introduced to correct the calculation result to obtain a more accurate height value. After experimental verification, the height measurement method proposed in this paper can make the relative error of height control within 0.5%, demonstrating high-precision, and is capable of meeting the demands of the shared car seat automatic adjustment system to automatically adjust the car seat according to the driver's height.

关键词： MediaPipe key point detection shared cars height measurement computer vision the geometry principle of camera imaging camera calibration

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A Near-Infrared Cationic Photosensitizer for Lysosomal Activated Tumor Imaging and Photodynamic Therapy

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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 2023年第41期62卷 16604-16615页

作者： Li, Shining Jiang, Chao Huang, Yi liu, Chuang liu, ruiyuan Qu, Jinqing South China Univ Technol Sch Chem & Chem Engn Guangzhou 510640 Peoples R China South China Univ Technol Sch Biol & Biol Engn Guangzhou 510006 Peoples R China Southern Med Univ Sch Biomed Engn Guangzhou 510515 Peoples R China

The process of photodynamic therapy (PDT) is to use specific light irradiation to excite a photosensitizer (PS) to generate reactive oxygen species (ROS) to kill tumor cells. Traditional photosensitizers (PSs) have the problems of poor tumor imaging and low ROS generation efficiency. The cationic photosensitizer TBZTI based on the D-pi-A structure exhibits near-infrared fluorescence emission (730 nm) and a large Stokes shift (180 nm). TBZTI can be effectively aggregated into nanoparticles (100 nm) in aqueous solution, which are always in a fluorescence-off state. TBZTI can target lysosomes and be activated in a fluorescence-on state for high signal-to-noise ratio tumor imaging. TBZTI has low cytotoxicity, good biocompatibility, and high singlet oxygen generation efficiency (6.4-fold that of Rose Bengal). Cytotoxicity and apoptosis experiments further demonstrate that TBZTI can effectively kill cells and induce apoptosis under white light. TBZTI has a significant effect on PDT in mouse tumors, which obviously inhibits tumor growth and triggers the apoptosis of tumor cells. This work provides an important reference for the design and synthesis of photosensitizers with activated fluorescence, high singlet oxygen generation efficiency, and high signal-to-noise ratio tumor imaging.

关键词： Apoptosis Fluorescence Light Rodent models Tumors

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Advances in asymmetric moist-electric generators with innovative heterogeneous structures

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ENERGY & ENVIRONMENTAL SCIENCE 2024年第24期17卷 9406-9424页

作者： Ni, Kun Ren, Qinyi liu, Shanfei Sun, Baoquan Lai, Ying-Chih Zhang, Xiaohong liu, ruiyuan Soochow Univ Coll Energy Suzhou 215006 Jiangsu Peoples R China Soochow Univ Jiangsu Key Lab Adv Negat Carbon Technol Suzhou 215123 Jiangsu Peoples R China Soochow Univ Inst Funct Nano & Soft Mat FUNSOM Suzhou 215123 Jiangsu Peoples R China Natl Chung Hsing Univ Dept Mat Sci & Engn Taichung 40227 Taiwan

Harvesting energy from the ubiquitous moisture induced streaming potential or ion concentration gradients is a promising green technology. Lately, the emergence of high-performance asymmetric moist-electric generators (AMEGs) with an inhomogeneous distribution of their moist-electric active layer has significantly propelled this field forward, as the asymmetric structures can effectively regulate the moisture adsorption and ion migration. Nonetheless, a profound comprehension of the interrelationship between the working mechanisms, materials, and device structures remains essential. In this review, we provide a comprehensive account of AMEGs spanning from their fundamental research to real-world applications. We initially delve into the fundamental mechanisms and material engineering strategies centered on asymmetric architectures. Subsequently, we discuss device design strategies and power applications of AMEGs. Lastly, we provide an analysis of the challenges, potential solutions, and future trajectory for this promising technology. This review provides a comprehensive account of high-performance asymmetric moist-electric generators spanning from their fundamental research to real-world applications.

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Image super-resolution reconstruction method based on improved attention mechanism 6

Image super-resolution reconstruction method based on improv...

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6th International Conference on Robotics, Intelligent Control and Artificial Intelligence, RICAI 2024

作者： liu, ruiyuan Hu, Guinan Zhao, Siqi Defence Industry Secrecy Examination and Certification Center Beijing China Hangzhou Research Institute Xidian University Hangzhou China Harbin Engineerning University Harbin China

ISBN: (纸本)9798331541699

Image super-resolution enhancement technology occupies a central position in visual information processing in the digital era, and its core task is to reconstruct high-resolution images using low-resolution image data. With the development of computing technology, image super-resolution techniques are not only theoretically significant, but also become more and more critical in practical applications, and it has become a hot area of computer vision research. Nevertheless, there are still some challenges in current super-resolution solutions. Existing models are deficient in extracting the diversity of image features, which leads to the problems of detail loss and excessive smoothing of the reconstructed images, which seriously affects the visual quality of the images and makes the reconstructed images visually lacking in realism. In order to overcome these difficulties, this study focuses on the integration of image multi as features as well as exploring the attention mechanism of arbitrary scale images. Through these studies, we aim to improve the performance and efficiency of super-resolution reconstruction techniques. The main contributions of this thesis include: Aiming at the limitations of the multi-feature self-attention mechanism, this study proposes several innovative attention operators. These operators not only enhance the model’s feature extraction ability to capture image details and texture information more efficiently, but also improve the diversity of feature information. In addition, in order to overcome the limitations of existing attention mechanisms in feature extraction, this study introduces a novel, parameter-free attention module. This module effectively integrates information from both channel and spatial dimensions, significantly enhancing the feature representation. This design simplifies the model structure, avoids complex operations, and enhances model performance in image processing and computer vision tasks. © 2024 IEEE.

关键词： Image reconstruction

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Flexible photo-charging power sources for wearable electronics

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MATERIALS TODAY ENERGY 2023年 33卷

作者： Ding, Yu Wang, Zhiqi Duan, Xiaoli liu, ruiyuan Soochow Univ Coll Energy Soochow Inst Energy & Mat Innovat Key Lab Adv Carbon Mat & Wearable Energy Technol J Suzhou 215006 Peoples R China Soochow Univ Jiangsu Key Lab Adv Negat Carbon Technol Suzhou 215006 Peoples R China Ludong Univ Sch Chem & Mat Sci Yantai 264025 Peoples R China

Sustainable power supply is one of the key guarantees for wearable electronics. However, the trend of multifunctionality in integrated miniatured platform and higher operational expectation for modern untethered electronics raises great challenges. A flexible photo-charging system that harvests light en-ergy from ambient environment and simultaneously charges the energy storage devices would be a promising power solution other than manual battery replacement or frequently recharging. In this re-view, we discuss the state-of-the-art flexible photo-charging technologies as power sources for wearable electronics. Planar photo-charging devices and wearable photo-charging fibers/textiles are summarized, including the materials engineering, device designs, and performances. Then we will briefly present their current applications in sensing and health monitoring. This review concludes with some key challenges and perspectives for further research and development.(c) 2023 Elsevier Ltd. All rights reserved.

关键词： Solar cells Energy storage Self -powered Wearable applications

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