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Bichromatically pumped artificial cnoidal wave breathers in optical microresonators

Photonics Research 2024年第7期12卷 1464-1477页

作者： YIRAN GAO jian DAI ZHONGHAN wu ANNI LIU TIAN ZHANG WEI SUN JUNQIU LIU KUN XU State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and TelecommunicationsBeijing 100876China School of Electronic Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China School of Communication Engineering Hangzhou Dianzi UniversityHangzhou 310018China International Quantum Academy Shenzhen 518048China Hefei National Laboratory University of Science and Technology of ChinaHefei 230026China

Breathers are localized structures that undergo a periodic oscillation in their duration and amplitude. Optical microresonators, benefiting from their high-quality factor, provide an ideal test bench for studying breathing phenomena. In a monochromatically pumped microresonator system, intrinsic breathing instabilities are widely observed in the form of temporal dissipative Kerr solitons which only exist in the effectively red-detuned ***, we demonstrate a novel bichromatic pumping scheme to create compulsive breathing microcombs via respectively distributing two pump lasers at the effectively blue-and red-detuned sides of a single *** experimentally discover the artificial cnoidal wave breathers and molecular crystal-like breathers in a photonic chip-based silicon nitride microresonator and theoretically describe their intriguing temporal dynamics based on the bichromatic pumping Lugiato–Lefever equation. In particular, the corresponding breathing microcombs exhibit diverse comb line spacing ranging from 2 to 17 times the free spectral range of the *** discovery not only provides a simple yet robust method to harness microcombs with reconfigurable comb line spacing but also reveals a new class of breathing waves in driven dissipative nonlinear systems.

关键词： pumped resonator pumping

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Ca and Sr co-doping induced oxygen vacancies in 3DOM La_(2-x)Sr_(x)Ce_(2-y)CayO_(7-δ)catalysts for boosting low-temperature oxidative coupling of methane

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Journal of Energy Chemistry 2024年第4期91卷 331-344页

作者： Tongtong wu Yuechang Wei Jing Xiong Yitao Yang Zhenpeng Wang Dawei Han Zhen Zhao jian Liu State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249China Key Laboratory of Optical Detection Technology for Oil and Gas China University of PetroleumBeijing 102249China

It is urgent to develop catalysts with application potential for oxidative coupling of methane(OCM)at relatively lower ***,three-dimensional ordered macro porous(3 DOM)La_(2-x)Sr_(x)Ce_(2-y)CayO_(7-δ)(A_(2)B_(2)O_(7)-type)catalysts with disordered defective cubic fluorite phased structure were successfully prepared by a colloidal crystal template method.3DOM structure promotes the accessibility of the gaseous reactants(O2and CH4)to the active *** co-doping of Ca and Sr ions in La_(2-x)Sr_(x)Ce_(2-y)CayO_(7-δ)catalysts improved the formation of oxygen vacancies,thereby leading to increased density of surface-active oxygen species(O_(2)^(-))for the activation of CH4and the formation of C2products(C2H6and C2H4).3DOM La_(2-x)Sr_(x)Ce_(2-y)CayO_(7-δ)catalysts exhibit high catalytic activity for OCM at low temperature.3DOM La1.7Sr0.3Ce1.7Ca0.3O7-δcatalyst with the highest density of O_(2)^(-)species exhibited the highest catalytic activity for low-temperature OCM,i.e.,its CH4conversion,selectivity and yield of C2products at 650℃are 32.2%,66.1%and 21.3%,*** mechanism was proposed that the increase in surface oxygen vacancies induced by the co-doping of Ca and Sr ions boosts the key step of C-H bond breaking and C-C bond coupling in catalyzing low-temperature *** is meaningful for the development of the low-temperature and high-efficient catalysts for OCM reaction in practical application.

关键词： 3DOM catalysts Ca ions Sr ions Low-temperature oxidative couplingof methane Oxygen vacancies O_(2)^(-) species

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OsNAC5 orchestrates OsABI5 to fine-tune cold tolerance in rice

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Journal of Integrative Plant Biology 2024年第4期66卷 660-682页

作者： Ruiqing Li Yue Song Xueqiang Wang Chenfan Zheng Bo Liu Huali Zhang jian Ke Xuejing wu Liquan wu Ruifang Yang Meng jiang College of Agronomy Anhui Agricultural UniversityHefei 230036China Hainan Institute Yazhou Bay Sci-Tech CityZhejiang UniversitySanya 572025China National Key Laboratory of Rice Biology Advanced Seed InstituteZhejiang UniversityHangzhou 311225China State Key Laboratory of Rice Biology and Chinese National Center for Rice Improvement China National Rice Research InstituteHangzhou 311401China Key Laboratory of Germplasm Innovation and Genetic Improvement of Grain and Oil Crops(Co-Construction by Ministry and Province) Ministry of Agriculture and Rural AffairsCrop Breeding and Cultivation Research InstituteShanghai Academy of Agricultural SciencesShanghai 201106China

Due to its tropical origins,rice(Oryza sativa)is susceptible to cold stress,which poses severe threats to ***5,a NAC-type transcription factor,participates in the cold stress response of rice,but the detailed mechanisms remain poorly ***,we demonstrate that OsNAC5 positively regulates cold tolerance at germination and in seedlings by directly activating the expression of ABSCISIC ACID INSENSITIVE 5(OsABI5).Haplotype analysis indicated that single nucleotide polymorphisms in a NAC-binding site in the OsABI5 promoter are strongly associated with cold ***5 also enhanced OsABI5 stability,thus regulating the expression of cold-responsive(COR)genes,enabling fine-tuned control of OsABI5 action for rapid,precise plant responses to cold *** affinity purification sequencing coupled with transcriptome deep sequencing identified several OsABI5 target genes involved in COR expression,including DEHYDRATION-RESPONSIVE ELEMENT BINDING FACTOR 1A(OsDREB1A),OsMYB20,and PEROXIDASE 70(OsPRX70).In vivo and in vitro analyses suggested that OsABI5 positively regulates COR gene transcription,with marked COR upregulation in OsNAC5-overexpressing lines and downregulation in osnac5 and/or osabi5 knockout *** study extends our understanding of cold tolerance regulation via OsNAC5 through the OsABI5-CORs transcription module,which may be used to ameliorate cold tolerance in rice via advanced breeding.

关键词： ABA signaling ABI5 cold tolerance DREB NAC5 rice

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Animal models of hepatitis E infection: Advances and challenges

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Hepatobiliary & Pancreatic Diseases International 2024年第2期23卷 171-180页

作者： Ze Xiang Xiang-Lin He Chuan-wu Zhu Jia-Jia Yang Lan Huang Chun jiang jian wu Chinese Consortium for the Study of Hepatitis E(CCSHE) Zhejiang University School of Medicine Hangzhou 310030China Department of Infectious Diseases The Fifth People’s Hospital of SuzhouSuzhou 215007China Department of Infection Management The Affiliated Suzhou Hospital of Nanjing Medical UniversitySuzhou Municipal HospitalGusu SchoolNanjing Medical UniversitySuzhou 215008China Department of Clinical Laboratory The Affiliated Suzhou Hospital of Nanjing Medical UniversitySuzhou Municipal HospitalGusu SchoolNanjing Medical UniversitySuzhou 215008China 不详

Hepatitis E virus(HEV)is one of the leading causes of acute viral hepatitis *** most of HEV infections are asymptomatic,some patients will develop the symptoms,especially pregnant women,the elderly,and patients with preexisting liver diseases,who often experience anorexia,nausea,vom-iting,malaise,abdominal pain,and *** infection may become chronic in immunosuppressed *** addition,HEV infection can also cause several extrahepatic *** exists in a wide range of hosts in nature and can be transmitted across ***,animals susceptible to HEV can be used as *** establishment of animal models is of great significance for studying HEV transmission,clinical symptoms,extrahepatic manifestations,and therapeutic strategies,which will help us understand the pathogenesis,prevention,and treatment of hepatitis *** review summarized the animal models of HEV,including pigs,monkeys,rabbits,mice,rats,and other *** each animal species,we provided a concise summary of the HEV genotypes that they can be infected with,the cross-species transmission pathways,as well as their role in studying extrahepatic manifestations,prevention,and treatment of HEV *** advantages and disadvantages of these animal models were also *** review offers new perspectives to enhance the current understanding of the research landscape surrounding HEV animal models.

关键词： Hepatitis E virus Animal models Pathogenesis Prevention Treatment

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Recent advancements in hydrometallurgical recycling technologies of spent lithium-ion battery cathode materials

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Rare Metals 2024年第3期43卷 879-899页

作者： Juan wu Li Xiao Li Shen jian-Jun Ran Hui Zhong Yi-Rong Zhu Han Chen College of Materials and Advanced Manufacturing Hunan University of TechnologyZhuzhou412007China School of Resources Processing and Bioengineering Central South UniversityChangsha410083China Guangdong jiana Energy Technology Company Qingyuan513000China

The rapidly increasing production of lithium-ion batteries(LIBs)and their limited service time increases the number of spent LIBs,eventually causing serious environmental issues and resource *** the perspectives of clean production and the development of the LIB industry,the effective recovery and recycling of spent LIBs require urgent *** study provides an overview of the current hydrometallurgical processes employed in the recycling of spent cathode materials,focusing on the leaching of valuable metals and their *** particular,this research reviews the various leaching systems(inorganic acid,organic acid,and ammonia)and the separation of valuable metals,and then,recommendations for subsequent study are offered in an attempt to contribute to the development of highly efficient methods for recycling spent cathode *** addition,a range of existing technologies,such as solvent extraction,chemical precipitation,electrochemical deposition,and regeneration,for the postprocessing of leaching solutions are ***,the promising technologies,existing challenges and suggestions with respect to the development of effective and environmentally friendly recycling methods for handling spent cathode materials are identified.

关键词： Spent lithium-ion batteries(LIBs) Cathode material Hydrometallurgy Leaching Recycling

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Increased Oxygen Vacancies in CuO-ZnO Snowflake-like Composites Drive the Hydrogenation of CO_(2) to Methanol

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China Petroleum Processing & Petrochemical Technology 2024年第2期26卷 22-33页

作者： San Xiaoguang wu Wanmeng Zhang Lei Meng Dan Chang Xiangshuang Tan jianen Qi jian College of Chemical Engineering Shenyang University of Chemical TechnologyShenyang 110142China Shenyang Xinghua Aviation Electrical Appliances Co. Ltd.Shenyang 110023China Department of Prosthodontics PLA 964 HospitalChangchun 130000China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Cu/ZnO is widely used in the hydrogenation of carbon dioxide (CO_(2)) to methanol (CH_(3)OH) to improve the lowconversion rate and selectivity generally observed. In this work, a series of In, Zr, Co, and Ni-doped CuO-ZnO catalysts wassynthesized via a hydrothermal method. By introducing a second metal element, the activity and dispersion of the activesites can be adjusted and the synergy between the metal and the carrier can be enhanced, forming an abundance of oxygenvacancies. Oxygen vacancies not only adsorb CO_(2) but also activate the intermediates in methanol synthesis, playing a keyrole in the entire reaction. Co3O4-CuO-ZnO had the best catalytic performance (a CO_(2) conversion rate of 9.17%;a CH_(3)OHselectivity of 92.77%). This study describes a typical strategy for multi-component doping to construct a catalyst with anabundance of oxygen vacancies, allowing more effective catalysis to synthesize CH_(3)OH from CO_(2).

关键词： CuO-ZnO catalyst CO_(2)hydrogenation to CH_(3)OH doping oxygen vacancy synergy

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Adhesion strength of tetrahydrofuran hydrates is dictated by substrate stiffness

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Petroleum Science 2024年第1期21卷 667-673页

作者： Yan-Wen Lin Tong Li Yi Zhang Wei-Wei Yan Xiao-Ming Chen Zhi-Sen Zhang jian-Yang wu Department of Physics Research Institute for Biomimetics and Soft MatterJiujiang Research Institute and Fujian Provincial Key Laboratory for Soft Functional Materials ResearchXiamen UniversityXiamen361005FujianChina Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201ZhejiangChina Key Laboratory of Icing and Anti/De-icing China Aerodynamics Research and Development CenterMianyang621000SichuanChina Micro-and Nano-technology Research Center State Key Laboratory for Manufacturing Systems EngineeringXi’an Jiaotong UniversityXi’an710049ShaanxiChina Electronic Materials Research Lab Key Laboratory of the Ministry of EducationXi’an Jiaotong UniversityXi’an710049ShaanxiChina NTNU Nanomechanical Lab Norwegian University of Science and Technology(NTNU)Trondheim7491Norway

Understanding the hydrate adhesion is important to tackling hydrate accretion in ***,the relationship between the Tetrahydrofuran(THF)hydrate adhesion strength(AS)and surface stiffness on elastic coatings is systemically examined by experimental shear force measurements and theoretical *** mechanical factor-elastic modulus of the coatings greatly dictates the hydrate AS,which is explained by the adhesion mechanics theory,beyond the usual factors such as wettability and structural ***,the hydrate AS increases with reducing the thickness of the elastic coatings,resulted from the decrease of the apparent surface elastic *** effect of critical thickness for the elastic materials with variable elastic modulus on the hydrate AS is also *** study provides deep perspectives on the regulation of the hydrate AS by the elastic modulus of elastic materials,which is of significance to design anti-hydrate surfaces for mitigation of hydrate accretion in petro-pipelines.

关键词： Hydrate Adhesion strength Elastic modulus Coatings

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Insufficient TRPM5 Mediates Lipotoxicity-induced Pancreaticβ-cell Dysfunction

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Current Medical Science 2024年第2期44卷 346-354页

作者： Kai-yuan WANG Shi-mei wu Zheng-jian YAO Yun-xia ZHU Xiao HAN Key Laboratory of Human Functional Genomics of jiangsu Province Department of Biochemistry and Molecular BiologyNanjing Medical UniversityNanjing 211166China

Objective:While the reduction of transient receptor potential channel subfamily M member 5(TRPM5)has been reported in islet cells from type 2 diabetic(T2D)mouse models,its role in lipotoxicity-induced pancreaticβ-cell dysfunction remains *** study aims to study its ***:Pancreas slices were prepared from mice subjected to a high-fat-diet(HFD)at different time points,and TRPM5 expression in the pancreaticβcells was examined using immunofluorescence ***-stimulated insulin secretion(GSIS)defects caused by lipotoxicity were mimicked by saturated fatty acid palmitate(Palm).Primary mouse islets and mouse insulinoma MIN6 cells were treated with Palm,and the TRPM5 expression was detected using qRT-PCR and Western ***-induced GSIS defects were measured following siRNA-based Trpm5 *** detrimental effects of Palm on primary mouse islets were also assessed after overexpressing Trpm5 via an adenovirus-derived Trpm5(Ad-Trpm5).Results:HFD feeding decreased the mRNA levels and protein expression of TRPM5 in mouse pancreatic *** reduced TRPM5 protein expression in a time-and dose-dependent manner in MIN6 *** also inhibited TRPM5 expression in primary mouse *** of Trpm5 inhibited insulin secretion upon high glucose stimulation but had little effect on insulin *** of Trpm5 reversed Palm-induced GSIS defects and the production of functional maturation molecules unique toβ***:Our findings suggest that lipotoxicity inhibits TRPM5 expression in pancreaticβcells both in vivo and in vitro and,in turn,drivesβ-cell dysfunction.

关键词： type 2 diabetes β-cell dysfunction lipotoxicity TRPM5

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Unveiling the tailorable electrochemical properties of zeolitic imidazolate framework-derived Ni-doped LiCoO_(2) for lithium-ion batteries in half/full cells

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Journal of Energy Chemistry 2024年第6期93卷 229-242,I0006页

作者： jian-En Zhou Yiqing Liu Zhijian Peng Quanyi Ye Hua Zhong Xiaoming Lin Ronghua Zeng Yongbo wu Jiaye Ye Guangdong Provincial International Joint Research Center for Energy Storage Materials Key Laboratory of Theoretical Chemistry of EnvironmentMinistry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006GuangdongChina School of Chemistry and Physics Faculty of ScienceQueensland University of TechnologyBrisbaneQLD 4001Australia Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education) Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of MatterSchool of PhysicsSouth China Normal UniversityGuangzhou 510006GuangdongChina Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials Guangdong-Hong Kong Joint Laboratory of Quantum MatterSouth China Normal UniversityGuangzhou 510006GuangdongChina

As a prevailing cathode material of lithium-ion batteries(LIBs),LiCoO_(2)(LCO)still encounters the tricky problems of structural collapse,whose morphological engineering and cation doping are crucial for surmounting the mechanical strains and alleviating phase degradation upon ***,we propose a strategy using a zeolitic imidazolate framework(ZIF)as the self-sacrificing template to directionally prepare a series of LiNi_(0.1)Co_(0.9)O_(2)(LNCO)with tailorable electrochemical *** rational selection of sintering temperature imparts the superiority of the resultant products in lithium storage,during which the sample prepared at 700℃(LNCO-700)outperforms its counterparts in cyclability(156.8 mA h g^(-1)at 1 C for 200 cycles in half cells,1 C=275 mA g^(-1))and rate capability due to the expedited ion/electron transport and the strengthen mechanical *** feasibility of proper Ni doping is also divulged by half/full cell tests and theoretical study,during which LNCO-700(167 mA h g^(-1)at 1 C for 100 cycles in full cells)surpasses LCO-700 in battery performance due to the mitigated phase deterioration,stabilized layered structu re,ameliorated electro nic co nductivity,a nd exalted lithium sto rage *** work systematically unveils tailorable electrochemical behaviors of LNCO to better direct their practical application.

关键词： Lithium-ion batteries Zeolitic imidazolate framework LiNi_(0.1)Co_(0.9)O_(2) Electrochemical properties

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烷基酚醛缩合物对松香改性树脂性能的影响

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热固性树脂 2017年第2期32卷 1-4页

作者：李萍吴建兵侯彩英山西省应用化学研究所涂装高分子功能材料山西省重点实验室山西太原030027

通过对松香改性酚醛树脂的粘度、软化点、正庚烷容纳度等性能的分析,考察了酚醛树脂制备过程中不同烷基酚单体和缩合温度对松香改性树脂性能的影响。结果表明:随着烷基酚取代基碳链的加长,松香改性树脂分子链柔顺性增加,提高了树脂在正... 详细信息

通过对松香改性酚醛树脂的粘度、软化点、正庚烷容纳度等性能的分析,考察了酚醛树脂制备过程中不同烷基酚单体和缩合温度对松香改性树脂性能的影响。结果表明:随着烷基酚取代基碳链的加长,松香改性树脂分子链柔顺性增加,提高了树脂在正庚烷中的溶解性能,同时由于空间位阻增大,烷基酚与松香加成反应活性降低,产物的分子质量变小,粘度和软化点降低。随着缩合温度的升高,酚醛树脂缩合度逐渐增加,羟甲基含量减少,与松香反应后改性树脂的分子质量增大,正庚烷溶解性增加,软化点降低。

关键词：松香改性酚醛树脂烷基酚羟甲基分子质量粘度软化点正庚烷溶解性

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