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Suppression of current-induced membrane discharge of bipolar membranes by regulating ion crossover transport

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Journal of Energy Chemistry 2024年第9期96卷 387-395页

作者： tingting Yu Haolan Tao Jingkun Li Cheng Lian Honglai Liu State Key Laboratory of Chemical Engineering Shanghai Engineering Research Center of Hierarchical NanomaterialsSchool of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China School of Chemistry and Molecular Engineering East China University of Science and TechnologyShanghai 200237China

Bipolar membranes(BPMs)exhibit the unique capability to regulate the operating environment of electrochemical system through the water dissociation-combination ***,the industrial utilization of BPMs is limited by instability and serious energy *** current-induced membrane discharge(CIMD)at high-current conditions has a negative influence on the performance of anion-exchange membranes,but the underlying ion transport mechanisms in the BPMs remain ***,the CIMD-coupled Poisson-Nernst-Planck(PNP)equations are used to explore the ion transport mechanisms in the BPMs for both reverse bias and forward bias at neutral and acid-base *** is demonstrated that the CIMD effect in the reverse-bias mode can be suppressed by enhancing the diffusive transport of salt counter-ions(Na^(+)and Cl^(−))into the BPMs,and that in the forward-bias mode with acid-base electrolytes can be suppressed by matching the transport rate of water counter-ions(H_(3)O^(+)and OH^(−)).Suppressing the CIMD can promote the water dissociation in the reverse-bias mode,as well as overcome the plateau of limiting current density and reduce the interfacial blockage of salt co-ions(Cl^(−))in the anion-exchange layer in the forward-bias mode with acid-base *** work highlights the importance of regulating ion crossover transport on improving the performance of BPMs.

关键词： Bipolar membranes Current-induced membrane discharge Salt ion crossover Diffusion-migration-reaction process

Exploring multiple phases and first-order phase transitions in Kármán Vortex Street

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Science China(Physics,Mechanics & Astronomy) 2024年第11期67卷 47-54页

作者： Xu Li Xing Xiang tingting Xue Limin Wang Xiaosong Chen School of Systems Science and Institute of Nonequilibrium Systems Beijing Normal UniversityBeijing 100875China State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy ofSciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

Kármán Vortex Street, a fascinating phenomenon of fluid dynamics, has intrigued the scientific community for a long time. Many researchers have dedicated their efforts to unraveling the essence of this intriguing flow pattern. Here, we apply the lattice Boltzmann method with curved boundary conditions to simulate flows around a circular cylinder and study the emergence of Kármán Vortex Street using the eigen microstate approach, which can identify phase transition and its order-parameter. At low Reynolds number, there is only one dominant eigen microstate W_(1) of laminar flow. At Re_(c)^(1)= 53.6, there is a phase transition with the emergence of an eigen microstate pair W^(2,3) of pressure and velocity fields. Further at Re_(c)^(2)= 56, there is another phase transition with the emergence of two eigen microstate pairs W^(4,5) and W^(6,7). Using the renormalization group theory of eigen microstate,both phase transitions are determined to be first-order. The two-dimensional energy spectrum of eigen microstate for W^(1), W^(2,3) after Re_(c)^(1), W^(4-7) after Re_(c)^(2) exhibit-5/3 power-law behavior of Kolnogorov's K41 theory. These results reveal the complexity and provide an analysis of the Kármán Vortex Street from the perspective of phase transitions.

关键词： Kármán Vortex Street first-order phase transition eigen microstate approach renormalization group theory of eigen microstate

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Structure attack on full-round DBST

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Frontiers of Computer Science 2024年第4期18卷 223-225页

作者： Chenhao JIA Qing LING Ting WU tingting CUI School of Cyberspace Hangzhou Dianzi UniversityHangzhou 310018China Hangzhou Innovation Institute Beihang UniversityHangzhou 310052China Key Laboratory of Cryptologic Technology and Information Security(Ministry of Education) Shandong UniversityQingdao 266237China

1 Introduction Block cipher is one of the most important part of symmetric cipher,which has been widely used in the field of computer communication and information system *** order to meet the increasing demand for ensuring secure data transmission in Internet of Things(IoT)environment,lightweight block ciphers have become more and more important due to their easy software implementation,low resource consumption,ease of standardization and high ***,in order to satisfy the constraints of resource-limited devices,lightweight block ciphers strive to achieve a balance between the cost of software and hardware implementation,efficiency,and ***,sometimes the security of lightweight block ciphers might be challenged due to the simplified ***,it is meaningful to study the type of simplified lightweight block ciphers.

关键词： hardware computer simplified

Microglial response to aging and neuroinflammation in the development of neurodegenerative diseases

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Neural Regeneration Research 2024年第6期19卷 1241-1248页

作者： tingting Han Yuxiang Xu Lin Sun Makoto Hashimoto Jianshe Wei Institute for Brain Sciences Research School of Life SciencesHenan UniversityKaifengHenan ProvinceChina College of Chemistry and Molecular Sciences Henan UniversityKaifengHenan ProvinceChina Department of Basic Technology Tokyo Metropolitan Institute of Medical ScienceTokyoJapan.

Cellular senescence and chronic inflammation in response to aging are considered to be indicators of brain aging;they have a great impact on the aging process and are the main risk factors for *** the microglial response to aging and neuroinflammation in neurodegenerative diseases will help understand the importance of microglia in neurodegenerative *** review describes the origin and function of microglia and focuses on the role of different states of the microglial response to aging and chronic inflammation on the occurrence and development of neurodegenerative diseases,including Alzheimer's disease,Huntington's chorea,and Parkinson's *** review also describes the potential benefits of treating neurodegenerative diseases by modulating changes in microglial ***,inducing a shift from the neurotoxic to neuroprotective microglial state in neurodegenerative diseases induced by aging and chronic inflammation holds promise for the treatment of neurodegenerative diseases in the future.

关键词： aging Alzheimer's disease cytokines Huntington's disease microglia neurodegenerative diseases neuroinflammation neuroprotection neurotoxicity Parkinson's disease

Skin neuropathy and immunomodulation in diseases

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Fundamental Research 2024年第2期4卷 218-225页

作者： Manze Zhang tingting Liu Jing Yang Department of Biology Stanford UniversityStanfordCA 94305USA Department of Biochemistry Weill Cornell Medical CollegeNew YorkNY 10065USA IDG/McGovern Institute for Brain Research Center for Life SciencesSchool of Life SciencesPeking UniversityBeijing 100871China Peking University Third Hospital Cancer Center Beijing 100191China

Skin is a vital barrier tissue of the *** responses in the skin must be precisely controlled,which would otherwise cause severe disease conditions such as psoriasis,atopic dermatitis,or pathogenic *** evidence has increasingly demonstrated the essential roles of neural innervations,i.e.,sensory and sympathetic signals,in modulating skin ***,neuropathic changes of such neural structures have been observed in skin disease conditions,implicating their direct involvement in various pathological *** in-depth understanding of the mechanism underlying skin neuropathy and its immunomodulatory effects could help reveal novel entry points for therapeutic ***,we summarize the neuroimmune interactions between neuropathic events and skin immunity,highlighting the current knowledge and future perspectives of this emerging research frontier.

关键词： Skin Neuropathy Neuroimmune Psoriasis Atopic dermatitis Pathogenic infection

中国城市转型背景下的农民工市民化成本——基于广东省实践的思考

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城市发展研究 2018年第3期25卷 21-25+103页

作者：廖茂林杜亭亭中国社会科学院城市发展与环境研究所中国社会科学院研究生院

当前城乡分割的户籍制度已经严重制约了我国城镇化的发展,推进农民工市民化是实现人口城镇化的有效途径。采用分类汇总的方法核算了农民工市民化的各类成本,并将农民工公共租赁住房的隐性成本引入成本核算中。研究发现,住房成本是当前... 详细信息

当前城乡分割的户籍制度已经严重制约了我国城镇化的发展,推进农民工市民化是实现人口城镇化的有效途径。采用分类汇总的方法核算了农民工市民化的各类成本,并将农民工公共租赁住房的隐性成本引入成本核算中。研究发现,住房成本是当前农民工市民化政策推进的主要障碍,并且大中城市农民工市民化成本存在显著差异,大城市房价过高,因此应大力引导农民工向中小城市落户。

关键词：农民工市民化住房成本分类汇总

Mesoporous polymers:soft-template self-assembly synthesis and applications

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Science China Chemistry 2024年第5期67卷 1442-1464页

作者： Facai Wei tingting Zhang Jianwei Fu Chengbin Jing Jiangong Cheng Shaohua Liu State Key Laboratory of Precision Spectroscopy Engineering Research Center of Nanophotonics&Advanced Instrument(Ministry of Education)School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450052China State Key Lab of Transducer Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China

Mesoporous polymers combine the advantages of polymer materials(abundant polar functional groups,lightweight,flexibility,and processability)and mesoporous structures(high specific surface area,adjustable pore structure,and large pore volume);hence,they have great application potential in sensing,adsorption,catalysis,energy storage,biomedicine,***,developing advanced synthetic strategies for mesoporous polymers and investigating their intrinsic applications have become hot research ***-template-based self-assembly is regarded as a promising approach for synthesizing mesoporous *** work reviews recent progress in the synthetic strategy for producing various mesoporous polymers using soft-template selfassembly,focusing on the synthesis of conductive polymers,phenol-based polymers,and resin-based polymers and their potential ***,perspectives on future applications of mesoporous polymers,along with a few challenges that need to be resolved,are also discussed in this review.

关键词： mesoporous polymer porous material self-assembly soft templates interface synthesis

Predication of Selective Ring-opening Hydrogenolysis for Furfuryl Alcohol to Produce Pentanediol over dual-atom Catalysts

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Chemical Research in Chinese Universities 2024年第1期40卷 55-63页

作者： WANG tingting WANG Jia XI Yongjie HU Bin LI Fuwei State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China

Selective activation of C-O bond is of fundamental importance in the precise conversion of oxygenates into value-added compounds in an atom-economic and sustainable manner, and meanwhile, the structurally well-defined dual-atoms catalysts (DACs) have been scarcely investigated in this field. In this study, a series of transition metal DACs anchored on nitrogen-doped graphene (TM2/NC, TM=Pt, Ir, Rh, Pd, Ru, Co, Ni and Cu) was constructed to make a comprehensive investigation of their selectivity in the hydrogenative transformation of furfuryl alcohol (FAL), an important biomass platform molecule, to 1,2-pentanediol (1,2-PeD) via selective cleavage of furanic C5-O bond, by density functional theory (DFT) calculations and microkinetic modeling. We found that Ir2/NC demonstrated a high selectivity for the cleavage of furanic C5-O bond to produce 1,2-PeD, while the production of THFAL or 1,5-pentanediol (1,5-PeD) on other TM2/NC catalysts are more favorable. Furthermore, we found that the selective C-O bond cleavage of FAL furan ring is affected by the orbital overlap between the d-orbitals of the anchored metal atoms and the p-orbitals of the adsorbed C atom in FAL, suggesting that the selectivity of the C-O bond cleavage is inextricably related with the electronic property of the anchored metals.

关键词： Furfuryl alcohol Hydrogenation dual-atom catalyst Density functional theory(DFT)calculation

Cyanidin-3-glucoside protects the photooxidative damage of retinal pigment epithelium cells by regulating sphingolipid signaling and inhibiting MAPK pathway

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Food Science and Human Wellness 2024年第2期13卷 621-632页

作者： tingting Liu Wentao Qi Wenting Peng Jianan Zhang Yong Wang School of Health Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China Academy of National Food and Strategic Reserves Administration Beijing 100037China Department of Chemistry University of North Carolina at Chapel HillChapel HillNC 27599USA

Cyanidin-3-glucoside(C3G)is the most common anthocyanin in dark grains and berries and is a food functional factor to improve visual ***,the mechanisms of C3G on blue light-induced retinal pigment epithelial(RPE)cell photooxidative damage needs further *** investigated the effects of C3G on blue light-irradiated A2E-containing RPE cells and explored whether sphingolipid,mitogen-activated protein kinase(MAPK),and mitochondria-mediated pathways are involved in this *** light irradiation led to mitochondria and lysosome damage in RPE cells,whereas C3G preserved mitochondrial morphology and function and maintained the lysosomal integrity.C3G suppressed the phosphorylation of JNK and p38 MAPK and mitochondria-mediated pathways to inhibit RPE cell *** data showed that C3G protected RPE cells against blue light-induced lipid peroxidation and apoptosis by maintaining sphingolipids balance.C3G significantly inhibited ceramide(Cer d18:0/15:0,Cer d18:0/16:0 and Cer d18:0/18:0)accumulation and elevated galactosylceramide(GalCer d18:1/15:0 and GalCer d18:1/16:0)levels in the irradiated A2E-containing RPE ***,C3G attenuated cell membrane damage by increasing phosphatidylcholine and phosphatidylserine levels.C3G inhibited apoptosis and preserved the structure of mitochondria and lysosome by regulating sphingolipid signaling and suppression of MAPK activation in RPE ***,dietary supplementation of C3G prevents retinal photooxidative damage.

关键词： Cyanidin-3-glucoside Ceramide MAPK pathway Mitochondria-dependent apoptosis Lipidomics analysis