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Construction of NH2-MIL-125(Ti)/Bi2WO6 composites with accelerated charge separation for degradation of organic contaminants under visible light irradiation

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Green Energy & Environment 2020年第2期5卷 203-213页

作者： Sheng yin Yong chen ming Li Qingsong Hu Yi ding Yifan Shao jun Di Jiexiang Xia Huaming Li School of Chemistry and Chemical Engineering Institute for Energy ResearchJiangsu University301 Xuefu RoadZhenjiang 212013China School of Ecological and Environmental Science Shanghai Key Laboratory for Urban Ecological Processes and Eco-RestorationEast China Normal UniversityShanghai 200241China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore

Photocatalysis is considered as an ideal strategy for water pollution ***,it remains challenging to design a highly efficient photo-catalytic system through regulating the charge flow via a precise *** this work,a novel NH2-MIL-125(Ti)/Bi2WO6 composite was constructed via self-assembly growing Bi2WO6 nanosheets on NH2-MIL-125(Ti)*** characterization results demonstrated that NH2-MIL-125(Ti)was successfully incorporated into Bi2WO6 and the photoexcited carriers could be efficiently separated and transferred between the two ***2-MIL-125(Ti)/Bi2WO6 composites displayed enhanced photocatalytic activity for the removal of rhodamine B(RhB)and tetracycline(TC)under visible light irradiation,and the optimal weight ratio of NH2-MIL-125(Ti)was determined to be 7 wt%.The introduction of NH2-MIL-125(Ti)into Bi2WO6 could raise the absorption of visible light,accelerate the separation and transfer of charge carriers,and boost photocatalytic *** research presents a wide range of possibilities for the further development of novel composites in the field of environment purification.

关键词： NH2-MIL-125(Ti) Bi2WO6 nanosheets Charge separation Photocatalysis Visible light

Dynamic Sulfur-Rich Polymers from Elemental Sulfur and Epoxides

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Chinese Journal of Polymer Science 2024年第10期42卷 1479-1487,I0010页

作者： Ke-xiang chen chen-Hui Cui Zhen Li Ting Xu Hao-Qing Teng Zhi-Yuan he yin-Zhou Guo Xiao-Qing ming Zhi-Shen Ge Yan-Feng Zhang Tie-jun Wang School of Chemistry Engineering Research Center of Energy Storage Materials and DevicesMinistry of EducationXi’an Jiaotong UniversityXi’an710049China State Key Lab for Strength and Vibration of Mechanical Structures Department of Engineering MechanicsXi’an Jiaotong UniversityXi’an710049China

Sulfur-containing dynamic polymers had attracted significant attention due to their unique chemical structures with high *** sulfur, an inexpensive industrial waste product, to synthesize dynamic polysulfide polymers through reverse vulcanization has been a notable approach. However, this method required high temperatures and resulted in the release of unpleasant oders. In this study, we presented a robust method for the preparation of sulfur-rich polymers with dynamic polysulfide bonds from elemental sulfur and inexpensive epoxide monomers via a one-pot strategy at the mild room temperature. Different types of polysulfide molecules and polymers were synthesized by reacting various epoxide compounds with sulfur, along with the investigation of their structures and dynamic behaviors. It was noteworthy that the obatined polymers prepared from m-(2,3-epoxypropoxy)-N,N-bis(2,3-epoxypropyl)aniline and elemental sulfur exhibit multiple dynamic behaviors, including polysulfide metathesis and polysulfide-thiol exchange, enabling their rapid stress relaxation, self-healing, reprocessing and degradable properties of the cross-linked polymer. More importantly, the hydroxyl groups at the side chains from epoxide ring opening exhibited potential transesterification. This work provided a facile strategy for designing dynamic sulfur-rich polymers via a mild synthesis route.

关键词： Elemental sulfur Sulfur-containing polymer Dynamic covalent bond Dynamic polymer

A Bibliometric Analysis and Visualization of Current Research Trends in Chinese Medicine for Osteosarcoma

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Chinese Journal of Integrative Medicine 2022年第5期28卷 445-452页

作者： yin Meng-chen WANG Hong-shen YANG Xi XU Chong-qing WANG Tao YAN yin-jie FAN Zhao-xiang MA jun-ming ye Jie MO Wen Department of Orthopaedics Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai(200032)China Division of Spine Surgery Center Guangdong Provincial Hospital of Traditional Chinese MedicineGuangzhou(510120)China Cancer Institute Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai(200032)China

Background:To illustrate the research framework,overall knowledge structure,and development trends of Chinese medicine(CM)treatment for osteosarcoma(OS)by using a bibliometric analysis and newly developed visualization ***:Research datasets were acquired from the Web of Science(WOS)database from January 1,1980 to September 30,*** viewer and Citespace software was used to analyze the data and generate visualization knowledge *** trends of publications,distribution of institutes,distribution of journals,citation and H-index status,co-authorship status,research hotspots and co-citation status were ***:A total of 223 publications in the WOS database met the *** number of published articles showed a rise but the citation frequency and the H-index of China were relatively *** cooperation between the countries,institutes and authors were relatively *** publications were basic *** of the previous researches focused on basic mechanisms of CM in treating OS,and therapy and improvement of dosage form may become a frontier in this research ***:Compared with other fields,the field of CM treatment for osteosarcome is still in *** distribution of researches is imbalanced and cooperation between countries,institutions and authors remains to be ***,basic research occupies an absolute dominant position,and the exploration of the molecular mechanism of CM in preventing and treating OS may become a key point in the future.

关键词： osteosarcoma Chinese medicine bibliometric analysis visualization research trends

The Ca^(2+)-dependent DNases are Involved in Secondary Xylem Development in Eucommia ulmoides

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Journal of Integrative Plant Biology 2012年第7期54卷 456-470页

作者： Hui-Min chen Yu Pang jun Zeng Qi ding Shen-Yi yin Chao Liu Meng-Zhu Lu Ke-ming Cui Xin-Qiang he State KeyLaboratory of Protein and Plant Gene Research College of Life SciencesPeking UniversityBeijing 100871China Laboratory of Biotechnology Research Institute of ForestryChinese Academy of ForestryBeijing 100091China

Secondary xylem development has long been recognized as a typical case of programmed cell death （PCD） in plants. During PCD, the degradation of genomic DNA is catalyzed by endonucleases. However, to date, no endonuclease has been shown to participate in secondary xylem development. Two novel Ca^2＋-dependent DNase genes, EuCaN1 and EuCaN2, were identified from the differentiating secondary xylem of the tree Eucommia ulmoides Oliv., their functions were studied by DNase activity assay, in situ hybridization, protein immunolocalization and virus-induced gene silencing experiments. Full-length cDNAs of EuCaN1 and EuCaN2 contained an open reading frame of 987 bp, encoding two proteins of 328 amino acids with SNase-like functional domains. The genomic DNA sequence for EuCaN1 had no introns, while EuCaN2 had 8 introns. EuCaN1 and EuCaN2 digested ssDNA and dsDNA with Ca^2＋-dependence at neutral pH. Their expression was confined to differentiating secondary xylem cells and the proteins were localized in the nucleus. Their activity dynamics was closely correlated with secondary xylem development. Secondary xylem cell differentiation is influenced by RNAi of endonuclease genes. The results provide evidence that the Ca^2＋-dependent DNases are involved in secondary xylem development.

关键词： Ca^2+-dependent DNase programmed cell death secondary xylem development secondary wall formation Eucommia ulmoides.

iTRAQ-based quantitative proteomics analysis of defense responses triggered by the pathogen Rhizoctonia solani infection in rice

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Journal of Integrative Agriculture 2022年第1期21卷 139-152页

作者： FENG Zhi-ming gao Peng ZHAO Jian-hua WANG Guang-da ZHANG Hui-min CAO Wen-lei XUE xiang ZHANG Ya-fang MA Yu-yin HUA Rong chen Zong-xiang chen Xi-jun HU Ke-ming ZUO Shi-min Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding Agricultural CollegeYangzhou UniversityYangzhou 225009P.R.China Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu Province/Key Laboratory of Crop Genetics and Physiology of Jiangsu Province Yangzhou UniversityYangzhou 225009P.R.China Joint International Research Laboratory of Agriculture and Agri-Product Safety Ministry of Education of China/Institutes of Agricultural Science and Technology DevelopmentYangzhou UniversityYangzhou 225009P.R.China Yangzhou Polytechnic College Yangzhou 225000P.R.China Jiangsu Hongqi Seed Stock Co. Ltd.Taizhou 225311P.R.China

The soil-borne necrotrophic fungus Rhizoctonia solani is one of destructive fungi causing severe yield losses in various important crops. However, the host defense mechanisms against the invasion of this pathogen are poorly understood. In this study, we employed an i TRAQ-based quantitative proteomic approach to investigate host proteins responsive to R. solani using the resistant rice cultivar YSBR1. As a whole, we identified 319 differentially accumulated proteins(DAPs) after inoculation of rice plants with R. solani. Functional categorization analysis indicates that these DAPs cover a broad range of functions. Notably, a substantial portion of the DAPs are involved in cell redox homeostasis, carbohydrate metabolism, and phenylpropanoid biosynthesis, or belong to pathogenesis-related proteins, indicating that these processes/proteins play important roles in host defense against R. solani. Interestingly, all of the DAPs involved in photosynthesis and chlorophyll biosynthetic processes, and part of the DAPs involved in phenylpropanoid biosynthesis, show reduced accumulation after R. solani infection, suggesting that R. solani probably inhibits host photosynthetic system and phenylpropanoid biosynthesis to facilitate infection and colonization. In conclusion, our results provide both valuable resources and new insights into the molecular mechanisms underlying rice and R. solani interaction.

关键词： rice sheath blight Rhizoctonia solani proteomic defense response

I-DCGAN and TOPSIS-IFP:A simulation generation model for radiographic flaw detection images in light alloy castings and an algorithm for quality evaluation of generated images

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China Foundry 2024年第3期21卷 239-247页

作者： ming-jun Hou Hao Dong Xiao-yuan Ji Wen-bing Zou xiang-sheng Xia Meng Li Ya-jun yin Bao-hui Li Qiang chen Jian-xin Zhou State Key Laboratory of Materials Processing and Die&Mould Technology Huazhong University of Science and TechnologyWuhan 430074China Xinjiang Technology(Jiangsu)Co. Ltd.Nantong 226100JiangsuChina Southwest Technique and Engineering Research Institute Chongqing 400039China Shanghai Spaceflight Precision Machinery Institute Shanghai 201600China

The intelligent detection technology driven by X-ray images and deep learning represents the forefront of advanced techniques and development trends in flaw detection and automated evaluation of light alloy ***,the efficacy of deep learning models hinges upon a substantial abundance of flaw *** existing research on X-ray image augmentation for flaw detection suffers from shortcomings such as poor diversity of flaw samples and low reliability of quality *** this end,a novel approach was put forward,which involves the creation of the Interpolation-Deep Convolutional Generative Adversarial Network(I-DCGAN)for flaw detection image generation and a comprehensive evaluation algorithm named TOPSIS-IFP.I-DCGAN enables the generation of high-resolution,diverse simulated images with multiple appearances,achieving an improvement in sample diversity and quality while maintaining a relatively lower computational ***-IFP facilitates multi-dimensional quality evaluation,including aspects such as diversity,authenticity,image distribution difference,and image distortion *** results indicate that the X-ray radiographic images of magnesium and aluminum alloy castings achieve optimal performance when trained up to the 800th and 600th epochs,*** TOPSIS-IFP value reaches 78.7%and 73.8%similarity to the ideal solution,*** to single index evaluation,the TOPSIS-IFP algorithm achieves higher-quality simulated images at the optimal training *** approach successfully mitigates the issue of unreliable quality associated with single index *** image generation and comprehensive quality evaluation method developed in this paper provides a novel approach for image augmentation in flaw recognition,holding significant importance for enhancing the robustness of subsequent flaw recognition networks.

关键词： light alloy casting flaw detection image generator discriminator comprehensive evaluation index

The Possibility of Changing the Wettability of Material Surface by Adjusting Gravity

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Research 2020年第1期2020卷 435-445页

作者： Yong-ming Liu Zi-Qing Wu Sheng Bao Wei-Hong Guo Da-Wei Li Jin he xiang-Bin Zeng Lin-jun Huang Qin-Qin Lu Yun-Zhu Guo rui-Qing chen Ya-Jing ye chen-Yan Zhang Xu-Dong Deng Da-Chuan yin Key Lab of Space Bioscience&Biotechnology School of Life SciencesNorthwestern Polytechnical UniversityXi’an710072 ShaanxiChina School of Bioengineering Sichuan University of Science and EngineeringZigong643000 SichuanChina Shenzhen Research Institute of Northwestern Polytechnical University Shenzhen518057 GuangdongChina

The contact angle,as a vital measured parameter of wettability of material surface,has long been in dispute whether it is affected by ***,we measured the advancing and receding contact angles on extremely low contact angle hysteresis surfaces under different gravities(1-8G)and found that both of them decrease with the increase of the *** underlying mechanism is revealed to be the contact angle hysteresis and the deformation of the liquid-vapor interface away from the solid surface caused by gradient distribution of the hydrostatic *** real contact angle is not affected by gravity and cannot measured by an optical *** measured apparent contact angles are angles of inclination of the liquid-vapor interface away from the solid ***,a new equation is proposed based on the balance of forces acting on the three-phase contact region,which quantitatively reveals the relation of the apparent contact angle with the interfacial tensions and *** finding can provide new horizons for solving the debate on whether gravity affects the contact angle and may be useful for the accurate measurement of the contact angle and the development of a new contact angle measurement system.

关键词： apparent hysteresis hydrostatic

Polarization-insensitive quantum key distribution using planar lightwave circuit chips

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Science China(Information Sciences) 2022年第10期65卷 66-72页

作者： Guo-Wei ZHANG Wei chen Guan-Jie FAN-YUAN Li ZHANG Fang-xiang WANG Shuang WANG Zhen-Qiang yin De-Yong he Wen LIU jun-ming AN Guang-Can GUO Zheng-Fu HAN CAS Key Laboratory of Quantum Information University of Science and Technology of China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of China hefei Quantachip Technology Co. Ltd. USTC Center for Micro-and Nanoscale Research and Fabrication University of Science and Technology of China State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Self-stabilizing the quantum key distribution(QKD) system is essential to evaluate eavesdroppers’ information accurately. We develop and verify a polarization-insensitive time-bin decoder chip for QKD with the hybrid asymmetric Faraday-Michelson interferometer(AFMI) based on the planar lightwave circuit(PLC). Compared with existing chip-based QKD works, the scheme can intrinsically compensate for the polarization perturbation to quantum signals and thus work at arbitrary temperatures. We experimentally verify the chips in a time-bin QKD system at the clocking rate of 1.25 GHz and obtain an average secure key rate(SKR) of 1.34 Mbps over a 50 km fiber channel with an optimized analysis model. The steady variations of the quantum bit error and SKR with random polarization disturbance demonstrate that PLC-based AFMIs are available for developing self-stable QKD systems.

关键词： polarization insensitive time-bin asymmetric Faraday-Michelson interferometer quantum key distribution planar lightwave circuit

Late Quaternary fluvial terrace formation in the Luan River drainage basin,north China and its possible linkages with climate change and tectonic activation

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China Geology 2023年第3期6卷 395-408页

作者： Yu-chen Tian Xu-jiao Zhang Zhi-qiang yin Hai Shao ming-xu Gu yingying-ding Chao Peng xiang-ge Zhang School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China China institute of Geo-Environment Monitoring China Geological SurveyMinistry of Natural ResourcesBeijing 100081China hebei geological environment monitoring Institute Shijiazhuang 050021China

The Luan River is the most important water system in north-eastern hebei Province,China and is located in the transitional zone of the Eastern Yan Mountains,North China Plain and Songliao *** well-developed river terraces of its tributary,the Yixun River,provide excellent information for studying neotectonics and climate *** are seven terraces in the lower reaches of the Yixun River,numbered *** optically stimulated luminescence dating results of 23 samples show that terraces T7-T2 formed at 111.36±5.83 ka,78.20±4.45 ka,65.29±4.15 ka,56.44±3.07 ka,40.08±2.66 ka,and 13.14±0.76 ka,respectively.A comparison with the oxygen isotope curves of deep-sea sediments reveals that the sediment formation of each terrace corresponded to cold periods of marine isotope stages MIS 4 and MIS 2 and the relatively cold periods of MIS 5e,MIS 3,and MIS *** the Late Pleistocene,the incision rate of the Yixun River has ranged from 0.371-1.740 mm/*** the formation of T7-T6,T5-T4,T4-T3,and T3-T2,the incision rate was ***,in the two stages during which T6-T5 and T2-T1 formed(13.14±0.76 ka to 0.58±0.08 ka and 10.79±0.64 ka to 0.16±0.01 ka),these rates reached 1.554 mm/a and 1.592-1.740 mm/a,*** approximately 30 ka,the activity of the Langying Fault increased,leading to footwall *** river gathered in the north of Langying to form the ancient Erdaowan Lake,which resulted in the drying of the river in the lower reaches of the Yixun River during the last glacial maximum without forming river *** the Early Holocene,headward erosion in the lower reaches of the Yixun River was enhanced,which resulted in the disappearance of the lake,and incised meandering formed due to increased *** on the analyses of river incision and the formation of ancient lakes and incised meandering,it was inferred that there have been three periods of strong tectonism in the river basin since the Late Pleistocene.

关键词： River terrace Paleoclimate change Tectonic activation Optically stimulated luminescence dating Marine isotope stage Last glacial maximum Neotectonics Geomorphology Geological survey engineering North China Plain