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Competition of Composition Fluctuation Modes in Weakly Segregated Salt-doped Symmetric Diblock Copolymers

Chinese Journal of Polymer Science 2024年第9期42卷 1375-1385,I0008页

作者： yuan-xin zhou Xian Kong South China Advanced Institute for Soft Matter Science and Technology School of Emergent Soft MatterSouth China University of TechnologyGuangzhou510640China Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of TechnologyGuangzhou510640China

Salt-doped block copolymers have widespread applications in batteries,fuel cells,semiconductors,and various industries,where their properties crucially depend on phase separation ***,investigations into salt-doped diblock copolymers have predominantly focused on microphase separation,overlooking the segregation between ionic and polymeric *** study employs weak segregation theory to explore the interplay between phase separation dominated by the polymer-modulated mode and the salt-out-modulated mode,corresponding to microscopic and macroscopic phase separations,*** comparing diblock copolymers doped with salts to those doped with neutral solvents,we elucidate the significant role of charged species in modulating phase *** phase separation mode exhibits a transition between the polymer-modulated and salt-out-modulated modes at different *** systems doped with neutral solvents,this transition is stepwise,while in salt-ion-doped systems,it is *** a sufficiently large Flory-Huggins parameter between ions and polymers,the salt-out-modulated mode becomes dominant,promoting macrophase *** to the solvation effect of salt ions,salt-doped systems are more inclined to undergo microphase ***,we explore factors influencing the critical wavenumber of phase separation,including doping level and the Flory-Huggins parameters between two blocks and between ions and polymeric *** findings reveal that in a neutral solvent environment,these factors alter only the boundary between micro-and macro-phase separations,leaving the critical wavenumber unchanged in microphase separation ***,in a salt-doped environment,the critical wavenumber of microphase separation varies with these *** provides valuable insights into the pivotal role of electrostatics in the phase separation of salt-doped block copolymers.

关键词： Block copolymer Phase separation Field theory Salt-doped

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Enhancement of beneficial microbiomes in plant-soil continuums through organic fertilization:Insights into the composition and multifunctionality

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Soil Ecology Letters 2024年第3期6卷 109-120页

作者： Wen-Jing Li xin-yuan zhou xin-Li An Li-Juan Li Chen-Shuo Lin Hua Li Hong-Zhe Li Key Lab of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Institute of EnvironmentResourceSoil and FertilizersZhejiang Academy of Agricultural SciencesHangzhou 310021China

Soil microbiomes play a crucial role in maintaining ecological functions and are of great importance for soil *** of them could bring benefits to plants for growth *** numerous studies have focused on specific beneficial bacteria and their interactions with soils and plants,we still lack a comprehensive understanding of beneficial communities in plant–soil continuums and their responses to agricultural *** address this gap,we carried out a microcosm experiment using 16S rRNA amplicon sequencing to explore the effects of organic fertilization on beneficial communities in plant–soil continuums and assess their potential *** findings reveal that organic fertilization had a positive impact on the beneficial functionality of bacterial communities in plant–soil *** improvement was primarily attributed to the optimized soil physicochemical conditions resulting from organic ***,organic fertilization increased the complexity of bacterial co-occurrence networks in both soils and the *** taxa in the endosphere undergone a shift of functions toward pathogen suppression as the result of organic ***,this study revealed that plants exhibited a preference for internalizing beneficial bacteria over other type of *** also provided new insights for evaluating the multifunctionality of microbiomes,and found that the functionality of beneficial communities in plant–soil continuums is enhanced by organic *** these findings suggested that organic fertilization can be an effective strategy for maintaining plant and soil health.

关键词： plant–soil continuums beneficial bacteria agricultural activities multifunctionality endosphere

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Identification and Molecular Characterization of the Alkaloid Biosynthesis Gene Family in Dendrobium catenatum

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Phyton-International Journal of Experimental Botany 2024年第1期93卷 81-96页

作者： Liping Yang xin Wan Runyang zhou Yingdan yuan College of Horticulture and Landscape Architecture Yangzhou UniversityYangzhouChina Jiangsu Academy of Forestry NanjingChina Jiangsu Yangzhou Urban Forest Ecosystem National Observation and Research Station YangzhouChina

As one of the main active components of Dendrobium catenatum, alkaloids have high medicinal value. The physicochemicalproperties, conserved domains and motifs, phylogenetic analysis, and cis-acting elements of the genefamily members in the alkaloid biosynthesis pathway of D. catenatum were analyzed by bioinformatics, and theexpression of the genes in different years and tissues was analyzed by qRT-PCR. There are 16 gene families,including 25 genes, in the D. catenatum alkaloid biosynthesis pathway. The analysis of conserved domains andmotifs showed that the types, quantities, and orders of domains and motifs were similar among members ofthe same family, but there were significant differences among families. Phylogenetic analysis indicated that thegene family members showed some evolutionary conservation. Cis-acting element analysis revealed that therewere a large number of light-responsive elements and MYB (v-myb avian myeloblastosis viral oncogene homolog)-related elements in these genes. qRT-PCR showed that expressions of gene family members involved in alkaloidsynthesis were different in different years and tissues of D. catenatum. This study provides a theoretical basisfor further exploration of the regulatory mechanisms of these genes in the alkaloid biosynthesis of D. catenatum.

关键词： Dendrobium catenatum gene family alkaloid biosynthesis

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Relationship among Parkinson’s disease, constipation, microbes, and microbiological therapy

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World Journal of Gastroenterology 2024年第3期30卷 225-237页

作者： xin-Yang yuan Yu-Sen Chen zhou Liu Department of Neurology Affiliated Hospital of Guangdong Medical UniversityZhanjiang 524000Guangdong ProvinceChina Institute of Neurology Guangdong Key Laboratory of Age-Related Cardiac and Cerebral DiseasesZhanjiang 524000Guangdong ProvinceChina

This comprehensive review elucidates the complex interplay between gut microbiota and constipation in Parkinson’s disease(PD),a prevalent non-motor symptom contributing significantly to patients’morbidity.A marked alteration in the gut microbiota,predominantly an increase in the abundance of Proteobacteria and Bacteroidetes,is observed in PD-related *** treatments,although safe,have failed to effectively alleviate symptoms,thereby necessitating the development of novel therapeutic *** interventions such as prebiotics,probiotics,and fecal microbiota transplantation(FMT)hold therapeutic *** prebiotics improve bowel movements,probiotics are effective in enhancing stool consistency and alleviating abdominal *** shows potential for significantly alleviating constipation symptoms by restoring gut microbiota balance in patients with *** promising developments,the causal relationship between changes in gut microbiota and PD-related constipation remains elusive,highlighting the need for further research in this expanding field.

关键词： Parkinson disease Constipation Gut microbiota Prebiotics Probiotics Fecal microbiota transplantation

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Lipid metabolism, amino acid metabolism, and prostate cancer: a crucial metabolic journey

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Asian Journal of Andrology 2024年第2期26卷 123-134页

作者： Lin Chen Yu-xin Xu yuan-Shuo Wang Jian-Liang zhou School of Pharmacy Hangzhou Normal UniversityHangzhou 311121China Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province Hangzhou Normal UniversityHangzhou 311121China School of Pharmacy Guangxi Medical UniversityNanning530021China

Prostate cancer(PCa)is one of the most common malignancies in males worldwide,and its development and progression involve the regulation of multiple metabolic *** in lipid metabolism affect the proliferation and metastatic capabilities of PCa *** cells increase lipid synthesis and regulate fatty acid oxidation to meet their growth and energy ***,changes occur in amino acid metabolism in *** cells exhibit an increased demand for specific amino acids,and they regulate amino acid transport and metabolic pathways to fulfill their proliferation and survival *** changes are closely associated with disease progression and treatment response in PCa ***,a comprehensive investigation of the metabolic characteristics of PCa is expected to offer novel insights and approaches for the early diagnosis and treatment of this disease.

关键词： amino acid metabolism lipid metabolism metabolic pathways prostate cancer treatment strategies

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Exploring treatment options in cancer: Tumor treatment strategies

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Signal Transduction and Targeted Therapy 2024年第8期9卷 3337-3380页

作者： Beilei Liu Hongyu zhou Licheng Tan Kin To Hugo Siu xin-yuan Guan Department of Clinical Oncology The University of Hong Kong-Shenzhen HospitalShenzhenChina Department of Clinical Oncology The University of Hong KongHong KongChina state Key Laboratory for Liver Research The University of Hong KongHong KongChina Advanced Energy Science and Technology Guangdong Laboratory HuizhouChina MOE Key Laboratory of Tumor Molecular Biology Jinan UniversityGuangzhouChina

Traditional therapeutic approaches such as chemotherapy and radiation therapy have burdened cancer patients with onerous physical and psychological ***,the landscape of tumor treatment has undergone a comprehensive and remarkable *** as fervently pursued modalities are small molecule targeted agents,antibody-drug conjugates(ADCs),cell-based therapies,and gene *** cutting-edge treatment modalities not only afford personalized and precise tumor targeting,but also provide patients with enhanced therapeutic comfort and the potential to impede disease ***,it is acknowledged that these therapeutic strategies still harbour untapped potential for further *** a comprehensive understanding of the merits and limitations of these treatment modalities holds the promise of offering novel perspectives for clinical practice and foundational research *** this review,we discussed the different treatment modalities,including small molecule targeted drugs,peptide drugs,antibody drugs,cell therapy,and gene *** will provide a detailed explanation of each method,addressing their status of development,clinical challenges,and potential *** aim is to assist clinicians and researchers in gaining a deeper understanding of these diverse treatment options,enabling them to carry out effective treatment and advance their research more effciently.

关键词： drugs treatment holds

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Highly Aromatic Norditerpenoid Heterodimers and Monomers from Trigonostemon fragilis

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Engineering 2024年第7期38卷 144-154页

作者： Jun-Su zhou Long Cheng yuan Gao Zhan-Peng Ge Bin zhou Jing-Ya Li Jin-xin Zhao Jian-Min Yue State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China Shandong Laboratory of Yantai Drug Discovery Bohai Rim Advanced Research Institute for Drug DiscoveryYantai 264117China

Four new norditerpenoid heterodimers with different dimerization patterns-namely,trigofragiloids A-C(denoted as compounds 1-3)and(+)-and(-)-trigofragiloid D(compound 4)-and three new phenanthrenone norditerpenoids-namely,trigofragiloids E-G(compounds 5-7)-were isolated from Trigonostemon *** 1 and 2 feature a novel heterodimeric carbon skeleton formed by the conjugation of a tetra-norditerpenoid and an ennea-norditerpenoid;they have been identified as class 2 atropisomers by means of quantum chemical *** 3 is an unprecedented phenylpropanoid-norditerpenoid adduct with a new dimerization ***(+)-and(-)-4 are the first example of S-shaped 1,4-dioxane-fused norditerpenoid *** by the structure elucidation of compound 4,two co-occurring analogues,actephilol A and epiactephilol A,were structurally revised as a pair of geometrical isomers and were identified as two pairs of enantiomers,(+)-and(-)-8 and(+)-and(-)-9,*** structures were characterized using a combined ***,compound 7 exhibits remarkable adenosine triphosphate-citrate lyase(ACLY)inhibition with a halfmaximal inhibition concentration(IC50)value of(0.46±0.11)lmol·L^(-1),as active as the positive control BMS-303141,and a molecular docking study offers deep insight into the interaction between compound 7 and ACLY.

关键词： Norditerpenoid heterodimer Trigonostemon fragilis Euphorbiaceae Trigofragiloid Structural revision Adenosine triphosphate-citrate lyase(ACLY) inhibitory activity

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A solution method for decomposing vector fields in Hamilton energy

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CHINESE PHYSICS B 2024年第9期33卷 645-653页

作者： Zhao, xin Yi, Ming Wei, zhou-Chao Zhu, yuan Lu, Lu-Lu China Univ Geosci Sch Math & Phys Wuhan 430074 Peoples R China

Hamilton energy, which reflects the energy variation of systems, is one of the crucial instruments used to analyze the characteristics of dynamical systems. Here we propose a method to deduce Hamilton energy based on the existing systems. This derivation process consists of three steps: step 1, decomposing the vector field; step 2, solving the Hamilton energy function; and step 3, verifying uniqueness. In order to easily choose an appropriate decomposition method, we propose a classification criterion based on the form of system state variables, i.e., type-I vector fields that can be directly decomposed and type-II vector fields decomposed via exterior differentiation. Moreover, exterior differentiation is used to represent the curl of low-high dimension vector fields in the process of decomposition. Finally, we exemplify the Hamilton energy function of six classical systems and analyze the relationship between Hamilton energy and dynamic behavior. This solution provides a new approach for deducing the Hamilton energy function, especially in high-dimensional systems.

关键词： Hamilton energy dynamical systems vector field exterior differentiation 87.19.L- 87.19.Lj 05.45.-a 05.45.Pq INFORMATION-TRANSMISSION CHAOTIC SYSTEM

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SDGNN: Symmetry-Preserving Dual-Stream Graph Neural Networks

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IEEE/CAA Journal of Automatica Sinica 2024年第7期11卷 1717-1719页

作者： Jiufang Chen Ye yuan xin Luo the College of Computer Science and Technology Chongqing University of Posts and TelecommunicationsChongqing 400065 the Chongqing Key Laboratory of Big Data and Intelligent Computing Chongqing Institute of Green and Intelligent TechnologyChinese Academy of SciencesChongqing 400714China the College of Computer and Information Science Southwest UniversityChongqing 400715China IEEE

Dear Editor,This letter proposes a symmetry-preserving dual-stream graph neural network(SDGNN) for precise representation learning to an undirected weighted graph(UWG). Although existing graph neural networks(GNNs) are influential instruments for representation learning to a UWG, they invariably adopt a unique node feature matrix for illustrating the sole node set of a UWG.

关键词： representation preserving undirected

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(Benzimidazolium)2GeI4:A layered two-dimensional perovskite with dielectric switching and broadband near-infrared photoluminescence

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结构化学 2024年第6期43卷 45-49页

作者： Xuan Zhu Lin zhou Xiao-Yun Huang Yan-Ling Luo xin Deng xin Yan Yan-Juan Wang Yan Qin yuan-yuan Tang Ordered Matter Science Research Center Nanchang UniversityNanchang330031People's Republic of China

Two-dimensional(2D)lead halide perovskites have attracted tremendous attention due to their outstanding physical ***,the presence of toxic lead is a major problem for large-scale ***,we report the synthesis,phase transition,dielectric and photoluminescence(PL)properties of a lead-free 2D Ge-based perovskite(BIM)2GeI4(BIM=benzimidazolium)which experiences a phase transition at 405 K accompanied by an order-disorder change of organic ***,the step-like dielectric transition near the phase transition temperature makes it suitable for dielectric ***,(BIM)2GeI4 has a direct bandgap of 2.23 eV and broadband emission from 550 to 1000 nm,implying its unique optical property for potential near-infrared lighting and *** work provides a fresh example for the development of lead-free 2D Ge-based perovskite with potential applications in the fields of optoelectronics and high temperature dielectric switching.

关键词： Dielectric switching Photoluminescence Two-dimensional perovskite Lead-free perovskite

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