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Advanced strategies for marine antifouling based on nanomaterial-enhanced functional PDMS coatings

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Nano Materials Science 2024年第4期6卷 375-395页

作者： xiaohui Shi Hao Wei Wenjun Zhou Paul E.D.Soto Rodriguez Cunguo lin Lei Wang Zhijia Zhang School of Materials Science and Chemical Engineering Harbin Engineering University Qingdao Innovation and Development Center of Harbin Engineering University State Key Laboratory for Marin Corrosion and Protection Luoyang Ship Material Research Institute (LSMRI) Instituto de Estudios Avanzados IUDEA Departamento de Física Universidad de La Laguna C/Astrofísico Francisco Sanchez School of Chemistry and Chemical Engineering Harbin Institute of Technology

Marine biofouling seriously affects human marine exploitation and transportation activities, to which marine antifouling(AF) coatings are considered to be the most cost-effective solution. Since the mid-20th century, human beings have dedicated their efforts on developing AF coatings with long cycle and high performance, leading to a large number of non-target organisms? distortion, death and marine environmental pollution. Polydimethylsiloxane(PDMS), is considered as one of the representative environment-friendly AF materials thanks to its non-toxic, hydrophobic, low surface energy and AF properties. However, PDMS AF coatings are prone to mechanical damage, weak adhesion strength to substrate, and poor static AF effect, which seriously restrict their use in the ocean. The rapid development of various nanomaterials provides an opportunity to enhance and improve the mechanical properties and antifouling properties of PDMS coating by embedding *** on our research background and the problems faced in our laboratory, this article presents an overview of the current progress in the fields of PDMS composite coatings enhanced by different nanomaterials, with the discussion focused on the advantages and main bottlenecks currently encountered in this field. Finally, we propose an outlook, hoping to provide fundamental guidance for the development of marine AF field.

关键词： Nanomaterials Antifouling PDMS composites Environment-friendly Marine biofouling

An axenic strain reveals the responses of Phaeodactylum tricornutum to external organic carbon

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Journal of Oceanology and Limnology 2024年第5期42卷 1621-1633页

作者： Zhengfeng ZHU Zhichao HE Jian LI Chengxu ZHOU Yanrong LI lin ZHANG xiaohui LI Spiros NAGATHOS Jichang HAN College of Food and Pharmaceutical Sciences Ningbo UniversityNingbo 315832China School of Biological and Chemical Engineering Panzhihua UniversityPanzhihua 617000China Ningbo Institute of Oceanography Ningbo 315832China School of Marine Life Ningbo UniversityNingbo 315832China Earth&Life Institute Catholic University of LouvainLouvain-La-Neuve 1348Belgium

The model diatom Phaeodactylum tricornutum is considered a promising source of various high value bioproducts,and developing cultivation processes is crucial for its *** mixotrophy and heterotrophy have been recommended as effective strategies for microalgal cultivation,previous studies on *** have yielded conflicting results in terms of cultivating this *** verify the capacity of this microalga utilizing external organic carbon,both heterotrophic and mixotrophic cultivation with varied carbon sources were performed using an axenic *** results demonstrate that glycerol was the only organic carbon that substantially stimulated the growth of *** in the presence of *** acetate(NaAc)at low concentrations could also promote growth,while at high concentrations led to severe inhibition under mixotrophic *** addition of glucose imposed no appreciable impact on either cell density or biomass concentration,confirming that *** cannot metabolize external ***,a comparative analysis between mixotrophy and autotrophy was performed to reveal the influences of glycerol on the cellular metabolism based on growth performances,biochemical compositions,and chlorophyll fluorescence *** also indicate that the addition of glycerol did not have detrimental effects on the capacity of either pigments biosynthesis or photosynthesis,but enhanced the saturated fatty acids and reduced the unsaturated fatty acids.

关键词： Phaeodactylum tricornutum autotrophy mixotrophy fucoxanthin glycerol

Scientific objectives and payload configuration of the Chang'E-7 mission

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National Science Review 2024年第2期11卷 285-300页

作者： Chi Wang Yingzhuo Jia Changbin Xue Yangting lin Jianzhong Liu xiaohui Fu lin Xu Yun Huang Yufen Zhao Yigang Xu Rui Gao Yong Wei Yuhua Tang Dengyun Yu Yongliao Zou State Key Laboratory of Space Weather National Space Science Center Chinese Academy of Sciences National Space Science Center Chinese Academy of Sciences Institute of Geology and Geophysics Chinese Academy of Sciences Institute of Geochemistry Chinese Academy of Sciences Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment School of Space Science and Physics Institute of Space SciencesShandong University Institute of Drug Discovery Technology Ningbo University State Key Laboratory of Isotope Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences School of Earth Science and Engineering Sun Yat-sen University Lunar Exploration and Space Engineering Center China Aerospace Science and Technology Corporation

As the cornerstone mission of the fourth phase of the Chinese Lunar Exploration Program, Chang'E-7(CE-7) was officially approved, and implementation started in 2022, including a main probe and a communication relay satellite. The main probe, consisting of an orbiter, a lander, a rover and a mini-flying probe, is scheduled to be launched in 2026. The lander will land on Shackleton crater's illuminated rim near the lunar south pole, along with the rover and mini-flying probe. The relay satellite(named Queqiao-2) will be launched in February 2024 as an independent mission to support relay communication during scientific exploration undertaken by Chang'E-4, the upcoming Chang'E-6 in 2024 and subsequent lunar *** CE-7 mission is mainly aimed at scientific and resource exploration of the lunar south pole. We present CE-7's scientific objectives, the scientific payloads configuration and the main functions for each scientific payload with its key technical specifications.

关键词： Chang’ E-7 scientific objectives scientific payloads

固原马铃薯淀粉及淀粉制品对糖尿病大鼠的低升糖活性研究

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农业科学研究 2024年第3期45卷 55-61页

作者：白雪易佳缙张俊彪吴语桐吴丝蝶林小辉詹国清吴振吴彩胜厦门大学药学院福建省药物新靶点研究重点实验室细胞应激生物学国家重点实验室福建厦门361005 宁夏黄土地农业食品有限公司宁夏固原756300

为研究固原马铃薯淀粉的低升糖活性,建立一种利用1-苯基-3-甲基-5-吡唑啉酮(PMP)柱前衍生化-高效液相色谱法测定血糖浓度的方法,该方法在测定范围内线性良好,葡萄糖溶液在3个质控浓度的准确度为89.7%~110.4%,RSD小于6.5%,血浆样品的加... 详细信息

为研究固原马铃薯淀粉的低升糖活性,建立一种利用1-苯基-3-甲基-5-吡唑啉酮(PMP)柱前衍生化-高效液相色谱法测定血糖浓度的方法,该方法在测定范围内线性良好,葡萄糖溶液在3个质控浓度的准确度为89.7%~110.4%,RSD小于6.5%,血浆样品的加标回收率为81%~103%。验证结果表明该方法简便、准确、稳定,适用于大鼠血糖浓度的测定。此外,首次利用体外模拟消化和整体动物评价相结合的方式,测定不同种类淀粉的慢消化淀粉、抗性淀粉质量分数,确定固原马铃薯淀粉及其淀粉制品对糖尿病大鼠的低升糖特性,为固原马铃薯在食品营养与健康领域的应用提供科学依据。

关键词：马铃薯淀粉糖尿病血糖浓度抗性淀粉慢消化淀粉

Towards wafer-scale growth of two-dimensional cerium dioxide single crystal with high dielectric performance

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Nano Research 2024年第9期17卷 8592-8599页

作者： Zhuofeng Shi Muhammad Imran xiaohui Chen Xin Liu Yaqi Zhu Zhaoning Hu Saiyu Bu Jialin Zhang Chunhu Li Xiaodong Zhang Li lin College of Chemistry and Chemical Engineering Qingdao UniversityQingdao 266000China School of Materials Science and Engineering Peking UniversityBeijing 100871China Center for Nanochemistry Beijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular ScienceCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationCollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China

Owing to the atomically thin nature,two-dimensional(2D)oxide materials have been widely reported to exhibit exciting transport and dielectric properties,such as fine gate controllability and ultrahigh carrier mobility,that outperform their bulk ***,unlike the successful synthesis of bulk oxide single crystals,reliable methods for synthesizing large-area single crystal of 2D oxide,that would suppress the negative influence from defective grain boundaries,remain unavailable,especially for nonlayered ***,we report that the lattice symmetry between the substrate and cerium dioxide(CeO_(2))would allow for the aligned nucleation and epitaxial growth of CeO_(2)on sapphire substrates,enabling the wafer-sized growth of CeO_(2)single *** careful tuning of the growth temperature and oxygen flow rate contributed to the harvesting of CeO_(2)wafer with reduced thickness and enhanced growth *** removal of grain boundaries improved the dielectric performance in terms of high dielectric strength(E_(bd)≈8.8 MV·cm^(-1)),suppressed leakage current,along with high dielectric constants(ε_(r)≈24).Our work demonstrates that with fine dielectric performance and ease of synthesizing wafer-sized single crystals,CeO_(2)can function as potential candidate as gate insulator for 2D-materials based nanoelectronics,and we believe the reported protocol of aligned nucleation can be extended to other 2D oxides.

关键词： dielectric materials two-dimensional materials chemical vapor deposition cerium dioxide

Data-Driven Design of Single-Atom Electrocatalysts with Intrinsic Descriptors for Carbon Dioxide Reduction Reaction

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Transactions of Tianjin University 2024年第5期30卷 459-469页

作者： Xiaoyun lin Shiyu Zhen xiaohui Wang Lyudmila V.Moskaleva Peng Zhang Zhi-Jian Zhao Jinlong Gong Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China School of Economics and Management Tianjin University of Technology and EducationTianjin 300222China Department of Chemistry University of the Free StateP.O.Box 339Bloemfontein 9301South Africa Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China National Industry-Education Platform of Energy Storage Tianjin UniversityTianjin 300350China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207FujianChina

The strategic manipulation of the interaction between a central metal atom and its coordinating environment in single-atom catalysts(SACs)is crucial for catalyzing the CO_(2)reduction reaction(CO_(2)RR).However,it remains a major *** density-functional theory calculations serve as a powerful tool for catalyst screening,their time-consuming nature poses *** paper presents a machine learning(ML)model based on easily accessible intrinsic descriptors to enable rapid,cost-effective,and high-throughput screening of efficient SACs in complex *** ML model comprehensively captures the influences of interactions between 3 and 5d metal centers and 8 C,N-based coordination environments on CO_(2)RR activity and *** reveal the electronic origin of the different activity trends observed in early and late transition metals during coordination with N *** extreme gradient boosting regression model shows optimal performance in predicting binding energy and limiting potential for both HCOOH and CO *** confirm that the product of the electronegativity and the valence electron number of metals,the radius of metals,and the average electronegativity of neighboring coordination atoms are the critical intrinsic factors determining CO_(2)RR *** developed ML models successfully predict several high-performance SACs beyond the existing database,demonstrating their potential applicability to other *** work provides insights into the low-cost and rational design of high-performance SACs.

关键词： Density functional theory Machine learning CO_(2)reduction reaction Electrocatalysts High-throughput screening

Promoting the optoelectronic and ferromagnetic properties of Cr_(2)S_(3)nanosheets via Se doping

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Science China(Physics,Mechanics & Astronomy) 2022年第7期65卷 138-146页

作者： Xinyun Zhou Chang Liu lingting Song Hongmei Zhang Ziwei Huang Chenglin He Bailing Li xiaohui lin Zucheng Zhang Shun Shi Dingyi Shen Rong Song Jia Li Xingqiang Liu Xuming Zou Le Huang Lei Liao Xidong Duan Bo Li School of Physics and Electronics College of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha 410082China Hunan Key Laboratory of Two-Dimensional Materials and State Key Laboratory for Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China Key Laboratory of Nondestructive Testing(Ministry of Education) Nanchang Hangkong UniversityNanchang 330063China Key Laboratory for Micro-Nano Physics and Technology of Hunan Province College of Materials Science and EngineeringHunan UniversityChangsha 410082China School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China Shenzhen Research Institute of Hunan University Shenzhen 518063China Research Institute of Hunan University in Chongqing Chongqing 401120China

Doping can change the band structure of semiconductors,thereby affecting their electrical,optical,and magnetic *** this study,we describe the synthesis of two-dimensional(2D)Se-doped Cr_(2)S_(3)(Se-Cr_(2)S_(3))nanosheets using the chemical vapor deposition *** these semiconductor nanosheets,the Se doping concentration can be controlled by tuning the Se/S mass ratio in the *** the doping concentrations of 10.05%and 2.05%,the room temperature conductivity and mobility were increased by nearly 4 and 2 orders of magnitude,*** addition,the response time of an ultrathin Se-Cr_(2)S_(3)photodetector was 200 times shorter than that of an undoped Cr_(2)S_(3)nanosheet photodetector.4.07%-Se-Cr_(2)S_(3)nanosheets show ferrimagnetic behavior with a Curie temperature of~200 K,which is 80 K higher than that of undoped Cr_(2)S_(3)nanosheets.A density functional theory calculation indicated that the Se doping can induce the formation of intercalated Cr vacancies in SeCr_(2)S_(3)and enhance its metallic *** results demonstrated that Se-Cr_(2)S_(3)has significant potential in future electronic,optoelectronic,and spintronic devices.

关键词： two-dimensional materials Cr_(2)S_(3)nanosheets doping optoelectronics ferromagnetism

Glioma-derived ANXA1 suppresses the immune response to TLR3 ligands by promoting an anti-inflammatory tumor microenvironment

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Cellular & Molecular Immunology 2024年第1期21卷 47-59页

作者： Yu Zheng Haihui Jiang Naixue Yang Shaoping Shen Daosheng Huang Lemei Jia Jing ling Longchen Xu Mingxiao Li Kefu Yu xiaohui Ren Yong Cui Xun Lan Song lin Xin lin Institute for Immunology and School of Medicine Tsinghua UniversityBeijing100084China Department of Neurosurgery Beijing Tiantan HospitalCapital Medical UniversityChina.National Clinical Research Center for Neurological DiseasesCenter of Brain TumorBeijing Institute for Brain Disorders and Beijing Key Laboratory of Brain TumorBeijing100070China Department of Neurosurgery Peking University Third HospitalPeking UniversityBeijing100191China Tsinghua-Peking Center for Life Sciences Beijing100084China

A highly immunosuppressive tumor microenvironment(TME)and the presence of the blood‒brain barrier are the two major obstacles to eliciting an effective immune response in patients with high-grade glioma(HGG).Here,we tried to enhance the local innate immune response in relapsed HGG by intracranially injecting poly(I:C)to establish a robust antitumor immune response in this registered clinical trial(NCT03392545).During the follow-up,12/27(44.4%)patients who achieved tumor control concomitant with survival benefit were regarded as responders in our *** found that the T-cell receptor(TCR)repertoire in the TME was reshaped after poly(I:C)*** on the RNA-seq analysis of tumor samples,the expression of annexin A1(ANXA1)was significantly upregulated in the tumor cells of nonresponders,which was further validated at the protein *** vitro and in vivo experiments showed that ANXA1 could induce the production of M2-like macrophages and microglia via its surface receptor formyl peptide receptor 1(FPR1)to establish a Treg cell-driven immunosuppressive TME and suppress the antitumor immune response facilitated by poly(I:C).The ANXA1/FPR1 signaling axis can inhibit the innate immune response of glioma patients by promoting an anti-inflammatory and Treg-driven ***,ANXA1 could serve as a reliable predictor of response to poly(I:C),with a notable predictive accuracy rate of 92.3%.In light of these notable findings,this study unveils a new perspective of immunotherapy for gliomas.

关键词： glioma ANXA1 TLR3 poly(I:C) immunotherapy

采用MRI评估不同分子分型乳腺癌新辅助化疗的疗效

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中华放射学杂志 2019年第11期53卷 1020-1024页

作者：林小慧许梅马捷暨南大学第二临床医学院深圳市人民医院 518020

新辅助化疗(NAC)是治疗局部晚期乳腺癌的规范化疗法.不同分子分型的乳腺癌具有不同的生物学特点、影像学特点、治疗方案及预后.根据不同分子分型乳腺癌MRI表现及功能MRI技术评价NAC疗效并预判是否达到病理完全缓解(pCR),对临床的精准治... 详细信息

新辅助化疗(NAC)是治疗局部晚期乳腺癌的规范化疗法.不同分子分型的乳腺癌具有不同的生物学特点、影像学特点、治疗方案及预后.根据不同分子分型乳腺癌MRI表现及功能MRI技术评价NAC疗效并预判是否达到病理完全缓解(pCR),对临床的精准治疗和预后判断具有重要指导意义.不同分子分型乳腺癌MRI影像学特点不同,NAC后的退缩方式及预测病理完全缓解的因素需要了解和掌握.

关键词：磁共振成像乳腺肿瘤新辅助化疗分子分型