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Measurement of two-phase velocities in bubble flows using laser Doppler velocimetry

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Journal of Hydrodynamics 2022年第6期34卷 1134-1144页

作者： Ling-xin Zhang Xin-sheng Cheng Han Tu Qi Gao Xue-ming Shao xiang-wei liao Liang Zhao Department of Engineering Mechanics Zhejiang UniversityHangzhou310027China Iron and Steel Research Institutes of Ansteel Group Corporation Anshan114009China State Key Laboratory of Metal Material for Marine Equipment and Application Anshan114009China

The measurement of two-phase velocities in bubble flows using laser Doppler velocimetry(LDV)is *** key to the problem is to differentiate the LDV signals from bubbles and tracers,based on which the two-phase velocities can be *** this study,two experiments are carried ***,the bubble-chain experiment is performed to investigate the optical response of bubble surface and the corresponding LDV *** optical response shows that the light received by the LDV detector is dominated by the reflection component,which is similar to specular reflection to some *** are three typical patterns of signals of large bubbles passing through the measurement volume,all of which are with high amplitude and ***,the upward-flow experiment is conducted to study the statistical characteristics of large bubbles as well as micro tracers and micro *** results show that the amplitude of signal of millimeter bubbles is about an order of magnitude larger than that of tracers or micro *** on this significant difference of the amplitude,we propose a phase discrimination method to distinguish two-phase *** capability of the proposed method is tested in a complex bubble flow,and its reliability is verified by bubble tracking velocimetry(BTV)technology.

关键词： laser Doppler velocimetry(LDV) bubbly flow phase discrimination bubble tracking velocimetry(BTV)

Effect of hollow insulation riser on shrinkage porosity and solidification structure of ingot

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Journal of Iron and Steel Research International 2022年第12期29卷 1951-1960页

作者： Ying-jie Liu Chun-lin Peng Wan-ming Li Xiao-lei Zhu Ming-gang Shen xiang-wei liao Kun Liu Chong-yi wei Yusuf Abba Yusuf Ji Yang Chang-you Cai School of Materials and Metallurgy University of Science and Technology LiaoningAnshan 114051LiaoningChina State Key Laboratory of Metal Material for Marine Equipment and Application Anshan 114000LiaoningChina

The thermal insulation performance of riser is very important to the shrinkage porosity and solidification structure of ingot,but it is difficult to significantly improve due to the limit of thermal conductivity of riser material.A new type of hollow insulation riser was proposed based on the low thermal conductivity of air,which aims to improve the thermal insulation performance of riser.A 14.5-t steel ingot was prepared using the hollow insulation riser,and the casting temperature was 1500°*** temperature evolution of the external surface of mold during solidification was measured using an infrared temperature instrument.A numerical model was established to simulate the porosity and solidification structure of *** reliability of numerical simulation was verified by comparing simulation and experimental *** show that the insulation performance of the riser can be significantly improved through application of the hollow insulation *** with solid insulation sleeve,the shrinkage cavity depth was decreased and the position of porosity was raised when hollow insulation riser was applied.

关键词： Hollow insulation riser Solidification Heat transfer Porosity Thermal conductivity

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两种真菌对紫茎泽兰的致病性研究

天然产物研究与开发 2004年第5期16卷 399-402页

作者：向明廖薇侯若彤杨志荣四川大学生命科学学院成都610064

本文以紫茎泽兰离体叶片为材料 ,研究了从空气中分离得到的青霉属和曲霉属的两种真菌对紫茎泽兰的致病性和叶片细胞膜透性的影响。结果表明 ,两种真菌及其毒素均能在紫茎泽兰叶片上产生直径 2～5mm的局部坏死斑。叶片用毒素处理后 ,细... 详细信息

本文以紫茎泽兰离体叶片为材料 ,研究了从空气中分离得到的青霉属和曲霉属的两种真菌对紫茎泽兰的致病性和叶片细胞膜透性的影响。结果表明 ,两种真菌及其毒素均能在紫茎泽兰叶片上产生直径 2～5mm的局部坏死斑。叶片用毒素处理后 ,细胞膜透性增大 ,相对电导率分别可达 86 .2 5 %、94 .5 6 % ;K+ 和Na+ 渗漏量增大 ,且随着时间的延长和毒素浓度的增加而增高。

关键词：紫茎泽兰毒素叶片细胞兰叶致病性相对电导率离体叶片真菌坏死局部

High-temperature-tolerant flexible supercapacitors: Gel polymer electrolytes and electrode materials

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Journal of Energy Chemistry 2025年第1期100卷 426-457页

作者： Chong Peng Xinyi Huang Mingwei Zhao Shuling liao Quanhong Yang Nianjun Yang Siyu Yu School of Chemistry & Chemical Engineering Southwest University Nanoyang Group Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage School of Chemical Engineering and Technology and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin University Department of Chemistry & IMO-IMOMEC Hasselt University

The development of flexible supercapacitors(FSCs) capable of operating at high temperatures is crucial for expanding the application areas and operating conditions of supercapacitors. Gel polymer electrolytes and electrode materials stand as two key components that significantly impact the efficacy of hightemperature-tolerant FSCs(HT-FSCs). They should not only exhibit high electrochemical performance and excellent flexibility, but also withstand intense thermal stress. Considerable efforts have been devoted to enhancing their thermal stability while maintaining high electrochemical and mechanical performance. In this review, the fundamentals of HT-FSCs are outlined. A comprehensive overview of state-of-the-art progress and achievements in HT-FSCs, with a focus on thermally stable gel polymer electrolytes and electrode materials is provided. Finally, challenges and future perspectives regarding HT-FSCs are discussed, alongside strategies for elevating operational temperatures and *** review offers both theoretical foundations and practical guidelines for designing and manufacturing HT-FSCs, further promoting their widespread adoption across diverse fields.

关键词： Flexible supercapacitors High-temperature tolerance Gel polymer electrolytes Electrode materials

Recent advances in crystalline carbon nitride for photocatalysis

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Journal of Materials Science & Technology 2021年第32期91卷 224-240页

作者： Jingjun Liu wei Fu Yulong liao Jiajie Fan Quanjun xiang Yangtze Delta Region Institute(Huzhou)&School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaHuzhou 313001China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China

Semiconductor photocatalytic technology has become one of the most important means to solve the current energy shortage and environmental pollution. Compared with the traditional photocatalysts, graphite carbon nitride has a wider range of light-harvesting and more stable physical and chemical properties. However, traditional thermally induced polymerization of nitrogen-containing precursors produces the melon-based carbon nitride solids with an amorphous or semi-crystalline structure, resulting in low conductivity and moderate photocatalytic activity. Recently, crystalline carbon nitride has attracted more and more attention in improving photocatalytic performance. Some significant progress regarding crystalline carbon nitride for the preparation of solar-fuel and environmental purification has also been *** review describes the recent advances in the design and synthesis of crystalline carbon nitride photocatalysts. A brief description of the unique physical and chemical properties of crystalline carbon nitride was given. Later, the synthetic and modification strategies are being introduced. Then, the photocatalytic application of crystalline carbon nitride was discussed, mainly including photocatalytic H2 production,photocatalytic CO2 reduction, and photocatalytic degradation of pollutants. Finally, the challenges and future directions of crystalline carbon nitride photocatalysts are briefly introduced.

关键词： Crystalline carbon nitride Design and synthesis Photocatalytic H_(2)production CO_(2)reduction Photocatalytic degradation

Mechanism of action of Linggui Zhugan Decoction in treating non-alcoholic fatty liver disease using untargeted metabolomics approach

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Traditional Medicine Research 2025年第2期10卷 65-76页

作者： Huan Pei Ren-Lin Li Xin-Ran Song Qian-Qian Wan Yu-Ming Wang Han-Zhou Li wei-Quan Xu Jia-Bao liao wei-Bo Wen Jing Miao Huan-Tian Cui School of Basic Medicine Yunnan University of Chinese MedicineKunming 650599China School Clinical Medical College Yunnan University of Chinese MedicineKunming 650599China First School of Clinical Medicine Yunnan University of Chinese MedicineKunming 650599China School of Integrative Chinese and Western Medicine Tianjin University of Traditional Chinese MedicineTianjin 301617China Department of Pharmacy Tianjin Second People's HospitalTianjin 300192China

Background:Non-alcoholic fatty liver disease(NAFLD)is a liver disorder characterized by the accumulation and degeneration of fat in the liver cells,a condition that may further deteriorate and lead to cirrhosis and liver *** studies showed that metabolic dysfunction can promote NAFLD *** Zhugan Decoction(LGZGD)has therapeutic effects on *** mechanism of LGZGD still remains *** study was to examine the impact of LGZGD on the metabolic processes involved in the development of ***:A mice model of NAFLD was treated with *** therapeutic potential of LGZGD was evaluated by assessing the activity of transaminases,lipids levels of blood,and pathological changes in the liver of the mice model of ***,this study also evaluated the influence of LGZGD on liver inflammation and oxidative ***:The results of untargeted metabolomics analysis showed that LGZGD reduced the disordered lipid metabolism in NAFLD *** improved the oxidative stress and also reduced the levels of pro-inflammatory cytokines in the *** metabolomics analysis of liver samples revealed that LGZGD treatment improved metabolic disorders,including alanine,aspartate,glutamate,glycerophospholipid metabolism,and citrate *** RT-qPCR and Western blot results showed that LGZGD could regulate the expression of key enzymes in the metabolic pathway of the citrate cycle,including ATP-citrate lyase(ACLY),alanine-glyoxylate aminotransferase-2(AGXT2),phosphatidylethanolamine N-methyltransferase(PEMT),and succinate dehydrogenase(SDH).Conclusion:We found that LGZGD can treat NAFLD by reducing inflammatory responses,inhibiting oxidative stress,regulating alanine,aspartate,glutamate,and glycerophospholipid metabolism,and citrate cycle pathways.

关键词： NAFLD LGZGD untargeted metabolomics glycerophospholipid metabolism citrate cycle

Rapid Shape Memory and p H-modulated Spontaneous Actuation of Dopamine Containing Hydrogels

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Chinese Journal of Polymer Science 2017年第10期35卷 1297-1306页

作者： Jie-xin liao Jia-he Huang 王涛 wei-xiang Sun 童真 Research Institute of Materials Science South China University of Technology Guangzhou 510640 China State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 China

The dopamine containing hydrogels with rapid responsive shape memory capability were synthesized by a one-pot method. The temporary shape of hydrogel was fixed within 20 s in Na OH solution by the tris-complex crosslinking of metalligand complex between Fe3＋ ions and catechol groups, while the permanent shape was recovered completely in HCl solution within 60 s upon the change from tris-complex to mono-complex. The hydrogel showed unique spontaneous actuation behavior. It could curl spontaneously without further external force deformation when immersed in Na OH solution again after the first shape recovery in HCl solution. This might be attributed to the competitive result of swelling and additional tris-complex crosslinking formation when immersed in Na OH solution. In addition, the hydrogels also had proper modulus, elongation ratio and tensile strength. Such hydrogel provides a new candidate material for designing soft actuators and robots modulated with spontaneous actuating.

关键词： DNA hydrogel duplex supramolecular cytosine assemble assembly motif intermolecular acrylamide

Optimal maneuver strategy to improve the observability of angles-only rendezvous

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Journal of Systems Engineering and Electronics 2023年第4期34卷 1020-1032页

作者： DU Ronghua liao Wenhe ZHANG xiang School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing 210094China

This paper proposes an optimal maneuver strategy to improve the observability of angles-only rendezvous from the perspective of relative navigation.A set of dimensionless relative orbital elements(ROEs)is used to parameterize the relative motion,and the objective function of the observability of anglesonly navigation is *** analytical solution of the optimal maneuver strategy to improve the observability of anglesonly navigation is obtained by means of numerical analysis.A set of dedicated semi-physical simulation system is built to test the performances of the proposed optimal maneuver ***,the effectiveness of the method proposed in this paper is verified through the comparative analysis of the objective function of the observability of angles-only navigation and the performances of the angles-only navigation filter under different maneuver *** with the cases without orbital maneuver,it is concluded that the tangential filtering accuracy with the optimal orbital maneuver at the terminal time is increased by 35%on average,and the radial and normal filtering accuracy is increased by 30%on average.

关键词： angles-only navigation observability optimal maneuver orbital rendezvous

Near-infrared brain functional characteristics of mild cognitive impairment with sleep disorders

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World Journal of Psychiatry 2025年第1期15卷 106-116页

作者： Heng liao Sha liao Yu-Jiao Gao Xi Wang Li-Hong Guo Su Zheng Wu Yang Yi-Nan Dai Sleep Psychosomatic Medicine Center Taihe Hospital of Shiyan CityAffiliated Hospital of Hubei University of MedicineShiyan 442000Hubei ProvinceChina Department of Integrated Chinese and Western Medicine Taihe Hospital of Shiyan CityAffiliated Hospital of Hubei University of MedicineShiyan 442000Hubei ProvinceChina Department of Orthopaedics Taihe Hospital of Shiyan CityAffiliated Hospital of Hubei University of MedicineShiyan 442000Hubei ProvinceChina Department of Rehabilitation Taihe Hospital of Shiyan CityAffiliated Hospital of Hubei University of MedicineShiyan 442000Hubei ProvinceChina

BACKGROUND Mild cognitive impairment(MCI)has a high risk of progression to Alzheimer’s *** disease is often accompanied by sleep disorders,and whether sleep disorders have an effect on brain function in patients with MCI is *** To explore the near-infrared brain function characteristics of MCI with sleep *** A total of 120 patients with MCI(MCI group)and 50 healthy subjects(control group)were *** subjects underwent the functional near-infrared spec-troscopy *** baseline data,Mini-Mental State Examination,Montreal Cognitive Assessment scale,fatigue severity scale(FSS)score,sleep parameter,and oxyhemoglobin(Oxy-Hb)concentration and peak time of functional near-infrared spectroscopy test during the task *** relationship between Oxy-RESULTS Compared with the control group,the FSS score of the MCI group was higher(t=11.310),and the scores of Pittsburgh sleep quality index,sleep time,sleep efficiency,nocturnal sleep disturbance,and daytime dysfunction were higher(Z=-10.518,-10.368,-9.035,-10.661,-10.088).Subjective sleep quality and total sleep time scores were lower(Z=-11.592,-9.924).The sleep efficiency of the MCI group was lower,and the awakening frequency,rem sleep latency period,total sleep time,and oxygen desaturation index were higher(t=5.969,5.829,2.887,3.003,5.937).The Oxy-Hb concentration at T0,T1,and T2 in the MCI group was lower(t=14.940,11.280,5.721),and the peak time was higher(t=18.800,13.350,9.827).In MCI patients,the concentration of Oxy-Hb during T0 was negatively correlated with the scores of Pittsburgh sleep quality index,sleep time,total sleep time,and sleep efficiency(r=-0.611,-0.388,-0.563,-0.356).It was positively correlated with sleep efficiency and total sleep time(r=0.754,0.650),and negatively correlated with oxygen desaturation index(r=-0.561)and FSS score(r=-0.526).All comparisons were P<*** Patients with MCI and sleep disorders have lower near-infrared brain function than norm

关键词： Mild Cognitive impairment Sleep disorders Near-infrared Brain functional Characteristics