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The critical role of hot carrier cooling in optically excited structural transitions

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npj Computational Materials 2021年第1期7卷 1061-1066页

作者： wen-hao liu Jun-Wei Luo Shu-Shen Li Lin-Wang Wang State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijingChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina Beijing Academy of Quantum Information Sciences BeijingChina Materials Science Division Lawrence Berkeley National LaboratoryBerkeleyCAUSA

The hot carrier cooling occurs in most photoexcitation-induced phase transitions(PIPTs),but its role has often been neglected in many theoretical simulations as well as in proposed ***,by including the previously ignored hot carrier cooling in real-time time-dependent density functional theory(rt-TDDFT)simulations,we investigated the role of hot carrier cooling in *** IrTe2 as an example,we reveal that the cooling of hot electrons from the higher energy levels of spatially extended states to the lower energy levels of the localized Ir–Ir dimer antibonding states strengthens remarkably the atomic driving forces and enhances atomic kinetic *** two factors combine to dissolute the Ir–Ir dimers on a timescale near the limit of atomic motions,thus initiating a deterministic kinetic phase *** further demonstrate that the subsequent cooling induces nonradiative recombination of photoexcited electrons and holes,leading to the ultrafast recovery of the Ir–Ir dimers observed *** findings provide a complete picture of the atomic dynamics in optically excited structural phase transitions.

关键词： transition excited transitions

Analysis on Lump, Lumpoff and Rogue Waves with Predictability to a Generalized Konopelchenko-Dubrovsky-Kaup-Kupershmidt Equation

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Communications in Theoretical Physics 2019年第6期71卷 670-676页

作者： wen-hao liu Yu-Feng Zhang Dan-Dan Shi School of Mathematics China University of Mining and Technology

In this paper, we investigate a(2+1)-dimensional generalized Konopelchenko-Dubrovsky-Kaup-Kupershmidt equation. The lump waves, lumpoff waves, and rogue waves are presented based on the Hirota bilinear form of this equation. It is worth noting that the moving path as well as the appearance time and place of the lump waves are given. Moreover, the special rogue waves are considered when lump solution is swallowed by double solitons. Finally,the corresponding characteristics of the dynamical behavior are displayed.

关键词： Konopelchenko-Dubrovsky-Kaup-Kupershmidt equation lump waves lumpoff waves rogue waves

ADVANCES IN MICROEMULSION PHASE ON SELF-ASSEMBLY AND MICELLE EXTRACTION WITH BLOCK COPOLYMERS

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China Particuology 2005年第6期3卷 310-316页

作者： Chen Guo hao wen Huizhou liu Lahoratory of Separation Science and Engineering State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of Sciences.P.O.Box 353Beijing 100080P.R.China

In this paper we review our work on self-assembly of the system, poly（ethylene oxide）-poly（propylene oxide）-poly（elhylene oxide）（PEO-PPO-PEO） block copolymers, which is a kind of macromolecular complex fluids. The control of self-assembly could be obtained by adding inorganic salts or aliphatic alcohols. By self-assembly of amphiphilic block copelymers a microemulsion phase is formed which could be applied in micelle extraction, such as hollow-fiber membrane micelle extraction, magnetic micelle extraction and immobilized micelle extraction.

关键词： microemulsion phase self-assembly block copolymer extraction

Nuclear Starburst Activity in the Seyfert 2 Galaxy NGC 2273

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Chinese Journal of Astronomy and Astrophysics 2003年第3期3卷 203-211页

作者： Qiu-Sheng Gu, Lei Shi, Shi-Jun Lei, wen-hao liu and Jie-hao Huang Department of Astronomy, Nanjing University, Nanjing 210093 qsgu@*** Department of Astronomy Nanjing University Nanjing 210093

We present spectrophotometric results of the Seyfert 2 galaxy NGC 2273. Thepresence of high-order Balmer absorption lines (H8, H9, H10) and weak equivalent widths of CaII Kλ3933, CN λ4200, G-band λ4300 and MgIb λ5173 clearly indicate recent star-forming activity inthe nuclear region. Using a simple stellar population synthesis model, we find that for the bestfit, the contributions of a power-law featureless continuum, an intermediate-age (～ 10~8 yr) and anold (> 10~9 yr) stellar population to the total light at the reference normalization wavelength are10.0%, 33.4% and 56.6%, respectively. The existence of recent starburst activity is also consistentwith its high far-infrared luminosity (log L_(FIR.)/L☉ = 9.9), its infrared color indexes[α(25,60) = ― 1.81 and α(60,100) = ― 0.79, typical values for Seyfert galaxies withcircumnuclear starburst], and its q-value (2.23, ratio of infrared to radio flux, very similar tothat of normal spirals and starburst galaxies). Byrd et al. have suggested that NGC 2273 might haveinteracted with NGC 2273B in less than 10~9 yr ago, so the starburst activity in this galaxy couldhave been triggered by tidal interaction, as indicated in recent numerical simulations.

关键词： galaxies: seyfert galaxies: starburst galaxies: stellar content

Design and simulation about a self-Tuning fuzzy-PID controller

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重庆邮电大学学报（自然科学版） 2009年第2期21卷 192-195,227页

作者： ZHANG Yi FU wen-yong LI Yan-hua DENG hao-wen liu Hong-chang Research Center of Intelligent System and Robotics Chongqing University of Posts and Telecommunications Chongqing 400065 P. R. China

Fuzzy logic has attracted the attention of structural control engineers during the last few years,because fuzzy logic can handle nonlinearities,uncertainties,and heuristic knowledge effectively and *** this paper,a self-Tuning fuzzy-PID control method which used the technology of the fuzzy control and PID control unified is *** techniques can visualize the results and processes for structure *** techniques will also provide convenience for engineers and users,and have high practical *** MATLAB simulation result shows that the system precision and the efficiency are very high and the static error is small,and robustness was also validated.

关键词： PID控制器模糊逻辑仿真结果自调整模糊PID控制设计 Matlab 启发式知识

An Ultra-wide Bandwidth Low-frequency Radio Astronomical Cryogenic Receiver for FAST Telescope

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Research in Astronomy and Astrophysics 2022年第11期22卷 176-189页

作者： Hong-Fei liu Peng Jiang Chuan He Fan Yang Hong-Ju liu Sheng-Wang Wang Yang Wu Yan Zhu Yang Cao Jin-You Song Xiang-Wei Shi Ming-Lei Guo Hang Zhang wen-hao liu National Astronomical Observatories Chinese Academy of Sciences(CAS)Beijing 100101China CAS Key Laboratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 101408China The 16th Research Institute of China Electronic Technology Group Corporation Hefei 230043China The 54th Research Institute of China Electronics Technology Group Corporation Shijiazhuang 050081China Beijing Technology and Business University Beijing 100048China

This paper presents an ultra-wide bandwidth(UWB)low-frequency radio astronomical cryogenic receiver for the Five-hundred-meter Aperture Spherical radio Telescope(FAST).It covers 6.6:1 bandwidth from 0.5 to 3.3 *** receiver consists of a Quad-Ridged Flared Horn(QRFH),a cryogenic microwave unit,an optical transceiver and a warm microwave and frequency mixing unit.A QRFH with a concentric-loaded dielectric spear is developed:the average return losses are larger than 20 d B;the average ports polarization isolation is 43.87 d B;the average dish efficiency is higher than 65%.Many UWB cryogenic low loss components are developed for the fabrication of a cryogenic microwave *** average noise temperature lower than 14.2 K and 22.5 K are achieved as referred to the input ports of cryogenic Dewar and the output of horn,*** to other similar advanced UWB receivers,such as Parkes 0.7-4.2 GHz(6:1 bandwidth)receiver and FAST 0.27-1.62 GHz(6:1 bandwidth)receiver,wider relative bandwidth of the proposed receiver is achieved and it is a new attempt to expand the bandwidth of UWB low-frequency receiver.

关键词： telescopes methods:analytical methods:observational

Enabling Extraordinary Rate Performance for Poorly Conductive Oxide Pseudocapacitors

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Energy & Environmental Materials 2020年第3期3卷 405-413页

作者： Mozaffar Abdollahifar hao-wen liu Chia-Hsin Lin Yu-Ting weng Hwo-Shuenn Sheu Jyh-Fu Lee Meng-Lin Lu Yen-Fa Liao Nae-Lih Wu Department of Chemical Engineering National Taiwan UniversityTaipei 106Taiwan National Synchrotron Radiation Research Center Hsinchu 30076Taiwan Taiwan Beamline Office at SPring-8 1-1-1 KoutoMikazukiSayoHyogo 679-5198Japan Advanced Research Center for Green Materials Science and Technology National Taiwan UniversityTaipei 10617Taiwan

Pseudocapacitive transition metal oxides(PTMOs)have the advantages of high areal capacitance and material density suitable for high-energy supercapacitor devices,but they are typically marred by insufficient rate performance,which in turn deteriorates cyclic stability at high current *** the example of spinel manganese oxide,herein we demonstrate that a pseudocapacitive oxide electrode of remarkable rate performance and cyclic stability may be realized by adopting oxide nanocrystallites,which are derived based on a novel solution chemistry,and carbon additive(CA)nanoparticles with highly uniform of size *** controlling the particle morphology and size distribution of the active material and conductive additive(CA)in the nanometer range can maximize the density of active material-CA-electrolyte three-phase contact points,thus facilitating synchronized electron and cation flow for the completion of surface faradaic *** resultant Mn3O4 pseudocapacitive electrode exhibits rate capability and cycle stability,including 60%capacity retention at 60 A g-1 and no capacity fade over 100000 cycles under dynamic current densities,far superior to the state-of-the-art PTMO *** electrode design strategy is in general applicable to pseudocapacitors containing poorly conductive active materials.

关键词： high-rate performance pseudocapacitor electrodes single nanoparticles three-phase contact point ultra-long cycle life

Exploring the therapeutic effect of Xiaoyan d ecoction on lung cancer cachexia skeletal muscle atrophy based on L3-SMI

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Cancer Advances 2024年第15期7卷 1-9页

作者： Qing-Peng Jin Yun-Chao Zhang Shi-Yu Wang hao-Jian Zhang Shang-Heng liu wen-hao liu Na Lu Graduate School of Tianjin University of Traditional Chinese Medicine Tianjin 301617China Department of Oncology First Teaching Hospital of Tianjin University of Traditional Chinese MedicineTianjin 300193China

Background:Lung cancer cachexia has received widespread attention as one of the most common complications in patients with advanced lung *** a multifactorial syndrome,lung cancer cachexia is characterized by a persistent decline in muscle mass that cannot be reversed by conventional nutrition Xiaoyan d ecoction can promote appetite and improve skeletal muscle mass in patients with lung cancer cachexia,while the third lumbar skeletal muscle index(L3-SMI)is able to determine whole-body skeletal muscle *** analyze the relationship between L3-SMI and hematological indexes and lung cancer cachexia,and to study the clinical efficacy of Xiaoyan decoction on skeletal muscle atrophy in lung cancer cachexia patients,with the aim of providing a reference basis for the early diagnosis and treatment of lung cancer cachexia patients and skeletal muscle ***:148 patients who were diagnosed with lung cancer in the Department of Oncology of the First Affiliated Hospital of Tianjin University of Traditional Chinese Medicine from January 2020 to December 2022 were included,and were divided into cachexia and non-cachexia groups according to the diagnostic criteria of cachexia,and analyzed the differences of hematological indexes and L3-SMI between cachexia patients and non-cachexia *** the patients with cachexia were divided into control group and treatment group,analyzed and compared the changes of body mass index(BMI),L 3-SMI,Karnofsky functional status score,albumin and other hematological indexes of the two groups before and after the treatment,and evaluated the safety of the Xiaoyan decoction in the treatment of ***:A total of 148 lung cancer patients were included in this study,including 67 patients in the cachexia group and 81 patients in the non-cachexia *** to the pre-treatment statistical analysis,the BMI of patients in the cachexia group was lower than that of patients in the non-cachexia group(P<0.05);among the biochemi

关键词： lung cancer cachexia Xiaoyan decoction skeletal muscle index network pharmacology

Analysis of causal relationship between blood metabolites and prostate cancer by two-sample Mendelian randomization

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Life Research 2024年第4期7卷 42-47页

作者： Qing-Peng Jin Yang Liao Rui-Yu Mou Yu-Jia Du wen Cheng Yun-Chao Zhang wen-hao liu Department of Oncology First Teaching Hospital of Tianjin University of Traditional Chinese MedicineTianjin 300193China Graduate school of Tianjin University of Traditional Chinese Medicine Tianjin 301617China.

Objective:To investigate the causal relationship between blood metabolite levels and the occurrence of prostate cancer by using two-sample Mendelian randomization ***:Pooled data from public databases for genome-wide association analyses of blood metabolites and prostate cancer were selected,and inverse variance weighting(IVW)was used as the primary method for estimating the causal effects,while heterogeneity tests,gene multiplicity tests and sensitivity analyses were performed to assess the stability and reliability of the ***:A total of six known metabolites were found to potentially increase the risk of prostate cancer development(P<0.05),namely fructose,allantoin,5-hydroxytryptophan,potassium ketoisocaproate,glycyltryptophan,and 1-heptadecanoyl-glycerol-3-phosphorylcholine,with no heterogeneity or genetic pleiotropy ***:Six known blood metabolites may be potential risk factors for prostate cancer development in European populations.

关键词： Mendelian randomization prostate cancer blood metabolites causal association