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Nanoarray-Embedded Hierarchical Surfaces for Highly Durable Dropwise Condensation

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Research 2022年第4期2022卷 693-705页

作者： Yue Hu Kaili Jiang Kim Meow Liew lu-wen zhang Department of Engineering Mechanics School of Naval ArchitectureOcean and Civil EngineeringShanghai jiao Tong UniversityShanghai 200240China State Key Laboratory of Low-Dimensional Quantum Physics Department of Physics e Tsinghua-Foxconn Nanotechnology Research CenterTsinghua UniversityBeijing100084China Department of Architecture and Civil Engineering City University of Hong KongKowloonHong Kong SARChina Centre for Nature-Inspired Engineering City University of Hong KongKowloonHong Kong SARChina

Durable dropwise condensation of saturated vapor is of significance for heat transfer and energy saving in extensive industrial *** numerous superhydrophobic surfaces can promote steam condensation,maintaining discrete microdroplets on surfaces without the formation of a flooded filmwise condensation at high subcooling remains ***,we report the development of carbon nanotube array-embedded hierarchical composite surfaces that enable ultra-durable dropwise condensation under a wide range of subcooling(ΔT_(sub)=8 K–38 K),which outperforms existing nanowire *** performance stems from the combined strategies of the hydrophobic nanostructures that allow efficient surface renewal and the patterned hydrophilic micro frames that protect the nanostructures and also accelerate droplet *** synergistic effects of the composite design ensure sustained Cassie wetting mode and capillarity-governed droplet mobility(Bond numberlume of condensed droplets,which contributes to the enhanced condensation heat *** design provides a feasible alternative for efficiently transferring heat in a vapor environment with relatively high temperatures through the tunable multiscale morphology.

关键词： condensation Highly saturated

Asymmetric Synthesis of Anisodine

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Chinese Chemical Letters 2005年第10期16卷 1287-1289页

作者： Yan Fen WU wen luE Qiang lu wen Sheng zhang School of Pharmaceutical Sciences Peking University Beijing 100083

Anisodine was synthesized from 3α-hydroxy-6β-acetyltropine in 11 steps. Laevorotary isomer of anisodine was prepared from the asymmetric dihydroxylation of compound 10 via the osmium catalyzed process employing p-ch... 详细信息

关键词： Anisodine tropine alkaloid total synthesis.

Transcriptomic analyses of humans and mice provide insights into depression

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Zoological Research 2020年第6期41卷 632-643页

作者： Hui-Juan Li Xi Su lu-wen zhang Chu-Yi zhang lu Wang wen-Qiang Li Yong-Feng Yang lu-Xian Lv Ming Li Xiao Xiao Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Kunming College of Life Science University of Chinese Academy of SciencesKunmingYunnan 650204China Henan Mental Hospital Second Affiliated Hospital of Xin xiang Medical UniversityXinxiangHenan 453002China Henan Key Lab of Biological Psychiatry International Joint Research Laboratory for Psychiatry and Neuroscience of HenanXinxiang Medical UniversityXinxiangHenan 453002China Henan Province People's Hospital ZhengzhouHenan 450003China KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China

Accumulating studies have been conducted to identify risk genes and relevant biological mechanisms underlying major depressive disorder(MDD).In particular,transcriptomic analyses in brain regions engaged in cognitive and emotional processes,e.g.,the dorsolateral prefrontal cortex(DLPFC),have provided essential *** on three independent DLPFC RNA-seq datasets of 79 MDD patients and 75 healthy controls,we performed differential expression analyses using two alternative approaches for *** also conducted transcriptomic analyses in mice undergoing chronic variable stress(CVS)and chronic social defeat stress(CSDS).We identified 12 differentially expressed genes(DEGs)through both analytical methods in MDD patients,the majority of which were also dysregulated in stressed ***,the mRNA level of the immediate early gene FOS(Fos proto-oncogene)was significantly decreased in both MDD patients and CVS-exposed mice,and CSDSsusceptible mice exhibited a greater reduction in Fos expression compared to resilient *** findings suggest the potential key roles of this gene in the pathogenesis of MDD related to stress *** transcriptomes in the DLPFC of MDD patients might be,at least partially,the result of stress exposure,supporting that stress is a primary risk factor for MDD.

关键词： Major depressive disorder Stressed mice Dorsolateral prefrontal cortex Transcriptomic analysis FOS

Atomistic Insights into the Tunable Transition from Cavitation to Crazing in Diamond Nanothread-Reinforced Polymer Composites

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Research 2020年第1期2020卷 1372-1383页

作者： lu-wen zhang Wei-Ming Ji Yue Hu Kim Meow Liew Department of Engineering Mechanics School of Naval ArchitectureOcean and Civil EngineeringShanghai 2002240Shanghai Jiao Tong UniversityChina Department of Architecture and Civil Engineering City University of Hong KongKowloonHong Kong SARChina

Cavitation and crazing in thermosetting polymers can be sophisticatedly designed for valuable applications in optics,electronics,and *** is a great challenge for numerical study to describe the formations of cavity and fibrils in polymer composite due to the complicated interfacial *** explore this challenging task,we exploit a two-phase coarse-grained framework which serves as an efficient atomistic level-consistent approach to expose and predict the transition between cavitation and crazing in a polymeric *** coarse-grained framework is utilized to transmit the information between single phase and interface in polymer composite,and the learning tasks of force field are fulfilled through parameterization of mechanical performances and structural *** elaborate on the intrinsic characteristics of the cavitation-crazing transition in diamond nanothread-(DNT-)reinforced polymethyl methacrylate composites,in which DNT plays a specific role of nanomodulator to tune the cavity volume *** transition from cavitation to crazing can be induced through a novel dissipative mechanism of opening an interlocked network,in which case the DNT is stretched to the aligned fibrils and links crazing tightly by interfacial *** designed computational framework can broaden the scope of theoretical tools for providing better insights into the microstructure design of polymer composites.

关键词： composite composites cavitation

Reduction of Sulphur-containing Aromatic Nitro Compounds with Hydrazine Hydrate over Iron(III) Oxide-MgO Catalyst

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Chinese Chemical Letters 2006年第4期17卷 441-443页

作者： Qi Xun SHI Rong wen lu Zhu Xia zhang De Feng ZHAO State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116012

Sulphur-containing aromatic amines were prepared efficiently in good to excellent yields by reduction of the corresponding sulphur-containing aromatic nitro compounds with hydrazine hydrate in the presence of iron（Ⅲ） oxide-MgO catalyst. The catalyst exhibited high activity and stability for the reduction of sulphur-containing aromatic nitro compounds. The yields of sulphur-containing aromatic amines were up to 91-99 % at 355 K after reduction for 1-4 h over this catalyst.

关键词： Iron(Ⅲ) oxide-MgO catalyst hydrazine hydrate sulphur-containing aromatic nitro compounds reduction.

Preparation of Sulphur-containing Aromatic Amines by Reduction of the Corresponding Aromatic Nitro Compounds with Hydrazine Hydrate over Iron Oxide Hydroxide Catalyst

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Chinese Chemical Letters 2006年第8期17卷 1045-1047页

作者： Qi Xun SHI Rong wen lu Zhu Xia zhang De Feng ZHAO State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116012

Sulphur-containing aromatic nitro compounds were rapidly reduced to the corresponding amines in high yields by employing hydrazine hydrate as a hydrogen donor in the presence of iron oxide hydroxide catalyst. It was worth noting that the catalyst exhibited extremely high activity. The reduction could be completed within 20-50 min and the yields were up to 97-99 %.

关键词： Iron oxide hydroxide catalyst hydrazine hydrate sulphur-containing aromatic nitro compounds reduction.

Alpha/proton Instability in the Presence of Proton and Alpha Temperature Anisotropy and its Application to the Deceleration of Alpha Particles in the Solar Wind

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Research in Astronomy and Astrophysics 2022年第1期22卷 192-204页

作者： wen-lu zhang Liang Xiang Qiu-Huan Li Si-Yi Lang Hong-Wei Yu Department of Physics and Synergetic Innovation Center for Quantum Effects and Applications School of Physics and ElectronicsHunan Normal UniversityChangsha 410081China Institute of Space Physics Luoyang Normal UniversityLuoyang 471934China

Observations of solar wind plasma find that the drift velocity between alpha beams and protons,vα,is reduced with the heliocentric distance,but the ratio of vαto vA(the local Alfven velocity)does not vary obviously and has a typical velocity ratio of vα/vA≤*** alpha beam instability is believed to be responsible for the deceleration of alpha beams in the solar ***,the role of the temperature anisotropy of ions(protons and alpha particles)on the alpha beam instability has not been *** on the kinetic theory of the PDRK solver,this study systemically investigates the alpha beam instability in the presence of proton and alpha temperature anisotropies and considers the effects of these temperature anisotropies on the instability at an arbitrary propagation angle relative to the ambient magnetic *** is found that the real frequencies,growth rates and threshold conditions of the excited waves sensitively depend on the proton temperature anisotropy T_(i⊥)/T_(i‖)and the alpha temperature anisotropy T_(α⊥)/T_(α‖),as well as the parallel electron betaβe‖.In particular,for both alpha beam and proton temperature anisotropy driven cases,the parallel magnetosonic/whistler(PM/W),backward magnetosonic/whistler(BM/W)and oblique Alfvén/ion cyclotron(OA/IC)waves arise when T_(i⊥)/T_(i‖)*** presence of anisotropic protons leads to a lower velocity threshold for the OA/IC and BM/W waves at T_(i⊥)/T_(i‖)*** both alpha beam and alpha temperature anisotropy driven cases,the PM/W and OA/IC waves are unstable when T_(α⊥)/T_(α‖)*** presence of anisotropic alpha particles results in a lower threshold velocity for the PM/W wave at T_(α⊥)/T_(α‖)<1 and for the PA/IC,OM/W and mirror waves at T_

关键词： (Sun:)solar wind Sun:heliosphere waves

Modified Sadowski formula-based model for the slope shape amplification effect under multistage slope blasting vibration

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International Journal of Mining Science and Technology 2024年第5期34卷 631-641页

作者： Xiaogang Wu Mingyang Wang Hao lu Yongjun zhang wen Nie State Key Laboratory of Disaster Prevention&Mitigation of Explosion&Impact Army Engineering University of PLANanjing 210007China State Key Laboratory of Metal Mine Safety and Health Ma’anshan 243000China School of Civil Engineering Qingdao University of TechnologyQingdao 266520China

Blasting operations,which are crucial to open-pit mine production due to their simplicity and efficiency,require precise control through accurate vibration velocity *** conventional Sadowski formula mainly focuses on blast center distance but neglects the amplification effect of blasting vibration waves by terraced terrain,from which the calculated blasting vibration velocities are smaller than the actual values,affecting the safety of the *** address this issue,our model introduces the influences of slope and time into Sadowski formula to measure safety through blast vibration *** the northern section of the open-pit quartz mine in Jinchang City,Gansu Province,China,the data of a continuous blasting slope project are referred *** findings reveal a noticeable vibration amplification effect during blasting when a multi-stage slope platform undergoes a sudden cross-sectional change near the upper overhanging *** amplification vibration coefficient increases with height,while vibration waves within rocks decrease from bottom to ***,platforms without distinct crosssectional changes exhibit no pronounced amplification during *** addition,the vibration intensity decreases with distance as the rock height difference change *** results obtained by the proposed blast vibration displacement equation incorporating slope shape influence closely agree with real-world *** to Pearson correlation coefficient(PPMCC)analysis,the average accuracy rate of our model is 88.84%,which exceeds the conventional Sadowski formula(46.92%).

关键词： Multistage slope Slope shape influence factor Continuous blasting Sadowski formula Amplification effect

A thermo-responsive rewritable plasmonic bio-memory by regulating single core-satellite gold nanocluster dissociation

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Nano Research 2024年第8期17卷 7275-7282页

作者： wen zhang Yi Wang Yamin Wang Xiaomei lu Weibing Wu Quli Fan Lei zhang State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Nanjing University of Posts&TelecommunicationsNanjing 210023China Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources College of Light Industry and Food EngineeringNanjing Forestry UniversityNanjing 210037China Zhengzhou Institute of Biomedical Engineering and Technology Zhengzhou 450001China Key Laboratory of Flexible Electronics(KLOFE) Institute of Advanced Materials(IAM)&School of Flexible Electronics(Future Technologies)Nanjing Tech University(Nanjing Tech)Nanjing 211816China

A thermo-responsive rewritable plasmonic bio-memory chip has been successfully fabricated on an indium tin oxide(ITO)glass slide by assembling core-satellite gold nanoclusters with different size of gold nanoparticles(AuNPs)using double-strand DNA(dsDNA)*** the prepared 70@DNA20@13 gold nanoclusters(AuNCs)exhibited more stable and greater photothermal conversion *** short time irradiation by 633 nm microbeam laser,every individual AuNCs could be excited and remove the satellite AuNPs on its ***,in the dissociation process of AuNCs with 3−5 satellite,its color would change from yellow to green,which showed more significant reduction in the red channel of the dark-field microscopy(DFM)images and could be defined to state“0”and“1”***,this plasmonic nano bio-memory could transform cyclically its state between 0 and 1 which exhibited excellent rewritable ability.

关键词： plasmonic assembly thermal-responsive single nanoparticle rewritable bio-memory