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薄膜润滑 4

粘度 3

内禀尺度 2

表面效应 2

9 + 2结构 1

Hilbert变换 1

乳腺癌 1

人工纤毛 1

仿生系统 1

低雷诺数 1

几何非线性 1

刀具状态监测；流形学习；降维；扩散映射分析；内蕴特征提取 1

可靠性制造 1

可靠性设计 1

吸附层 1

尺度相关 1

弹性失稳 1

弹性薄膜 1

径向轴承 1

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Tetra-detector size exclusion chromatography characterization of molecular and solution properties of soluble microbial polysaccharides from an anaerobic membrane bioreactor

Qingbin Guo,Sheng Chang

《环境科学与工程前沿（英文）》 2017年第11卷第2期 doi: 10.1007/s11783-017-0922-x

摘要： Tetra-detector HPSEC was evaluated for the SMP characterization Molecular weight and intrinsic viscosity of the SMP were characterized Specific viscosity and osmotic pressure of the SMP solution were studied Approach to analyze the concentration polarization of the SMP was discussed Characterization of the molecular properties of soluble microbial products (SMP) is critical for understanding the membrane filtration and fouling mechanisms in anaerobic and aerobic membrane bioreactors (AnMBR & MBR). In this study, the distributions of the absolute molecular weight and intrinsic viscosity of SMP polysaccharides from an AnMBR were effectively determined by a high performance size exclusion chromatography (HPSEC) that was coupled with the refractive index (RI), diode array UV (DAUV), right and low angle light scattering (LS), and viscometer (Vis) detectors. Based on the tetra-detector HPSEC determined absolute molecular weights and intrinsic viscosity, a universal calibration relationship for the SMP polysaccharides was developed and the molecular conformations, average molecular weights, and hydrodynamic sizes of the SMP polysaccharides were also explored. Two factors which can be derived from the tetra-detector HPSEC analysis were proposed for the characterization of the viscous and osmotic pressure properties of the SMP polysaccharides. In addition, it was also extrapolated how to analyze the resistance characteristics of the concentration polarization layers formed in membrane filtration based on the molecular properties determined by the tetra-detector HPSEC analysis.

关键词： Soluble microbial product Extracellular polymeric substance Membrane bioreactor Membrane fouling Molecular weight Intrinsic viscosity

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Combination of biomaterial transplantation and genetic enhancement of intrinsic growth capacities to

Bin Yu, Xiaosong Gu

《医学前沿（英文）》 2019年第13卷第2期页码 131-137 doi: 10.1007/s11684-018-0642-z

摘要： The inhibitory environment that surrounds the lesion site and the lack of intrinsic regenerative capacity of the adult mammalian central nervous system (CNS) impede the regrowth of injured axons and thereby the reestablishment of neural circuits required for functional recovery after spinal cord injuries (SCI). To circumvent these barriers, biomaterial scaffolds are applied to bridge the lesion gaps for the regrowing axons to follow, and, often by combining stem cell transplantation, to enable the local environment in the growth-supportive direction. Manipulations, such as the modulation of PTEN/mTOR pathways, can also enhance intrinsic CNS axon regrowth after injury. Given the complex pathophysiology of SCI, combining biomaterial scaffolds and genetic manipulation may provide synergistic effects and promote maximal axonal regrowth. Future directions will primarily focus on the translatability of these approaches and promote therapeutic avenues toward the functional rehabilitation of patients with SCIs.

关键词： spinal cord injury biomaterial extrinsic barrier intrinsic regeneration capacity

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Effect of different high viscosity modifiers on rheological properties of high viscosity asphalt

《结构与土木工程前沿（英文）》 2021年第15卷第6期页码 1390-1399 doi: 10.1007/s11709-021-0775-z

摘要： High viscosity asphalt (HVA) has been a great success as a drainage pavement material. However, the larger porosity of drainage asphalt mixtures weakens the cohesion and adhesion and leads to premature rutting, water damage, spalling and cracking. The purpose of this study was to investigate the rheological properties of HVA prepared using different high viscosity modifiers through conventional tests, Brookfield viscosity tests, dynamic shear rheometer tests and bending beam rheometer tests. The conventional performance results demonstrated SBS + rubber asphalt (SRA-1/2) exhibited excellent elastic recovery and low-temperature flexibility. The 60°C dynamic viscosity results indicated TPS + rubber asphalt (TRA) had the excellent adhesion. The rotational viscosity results and rheological results indicated that SRA-2 not only exhibited excellent temperature stability and workability, as well as excellent resistance to deformation and rutting resistance, but also exhibited excellent low-temperature cracking resistance and relaxation performance. Based on rheological results, the PG classification of HVA was 16% rubber + asphalt for PG76-22, 20% rubber + asphalt for PG88-22, TRA and SRA-1/2 for PG88-28. From comprehensive evaluation of the viscosity, temperature stability and sensitivity, as well as high/low temperature performance of HVA, SRA-2 was found to be more suited to the requirements of drainage asphalt pavement materials.

关键词： high viscosity asphalt rheological properties rubber modifier viscosity

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New approach to determine the plastic viscosity of self-compacting concrete

M. BENAICHA,X. ROGUIEZ,O. JALBAUD,Y. BURTSCHELL,A. Hafidi ALAOUI

《结构与土木工程前沿（英文）》 2016年第10卷第2期页码 198-208 doi: 10.1007/s11709-015-0327-5

摘要： The rheology of concrete is best measured with the use of a rheometer. The slump flow test gives a good indication of the flowability of the mixture and is therefore still used extensively to judge the workability of SCC mixtures. However, this test presents some defects. The objective of this paper is to develop a new methodology for measuring the workability of a SCC. In this article, we have proposed a correlation between the plastic viscosity of concrete, the time and the characteristics of the flow final profile from the V-funnel coupled to a Plexiglas horizontal channel. The proposed approach, verified by experimental results, represents a simple, economical and usable tool on building site, and it allows to characterize rheologically the SCC from its flow. The comparison between our approach and the experimental values of the plastic viscosity shows that, in a laboratory or on site, instead of using a rheometer we can use our approach to characterize the rheological behavior of a SCC.

关键词： rheology viscosity V-funnel flow profile rheometer behavior

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A critical review of ash slagging mechanisms and viscosity measurement for low-rank coal and bio-slags

Md Tanvir ALAM, Baiqian DAI, Xiaojiang WU, Andrew HOADLEY, Lian ZHANG

《能源前沿（英文）》 2021年第15卷第1期页码 46-67 doi: 10.1007/s11708-020-0807-8

摘要： Gasification or combustion of coal and biomass is the most important form of power generation today. However, the use of coal/biomass at high temperatures has an inherent problem related to the ash generated. The formation of ash leads to a problematic phenomenon called slagging. Slagging is the accumulation of molten ash on the walls of the furnace, gasifier, or boiler and is detrimental as it reduces the heat transfer rate, and the combustion/gasification rate of unburnt carbon, causes mechanical failure, high-temperature corrosion and on occasions, superheater explosions. To improve the gasifier/combustor facility, it is very important to understand the key ash properties, slag characteristics, viscosity and critical viscosity temperature. This paper reviews the content, compositions, and melting characteristics of ashes in differently ranked coal and biomass, and discusses the formation mechanism, characteristics, and structure of slag. In particular, this paper focuses on low-rank coal and biomass that have been receiving increased attention recently. Besides, it reviews the available methodologies and formulae for slag viscosity measurement/prediction and summarizes the current limitations and potential applications. Moreover, it discusses the slagging behavior of different ranks of coal and biomass by examining the applicability of the current viscosity measurement methods to these fuels, and the viscosity prediction models and factors that affect the slag viscosity. This review shows that the existing viscosity models and slagging indices can only satisfactorily predict the viscosity and slagging propensity of high-rank coals but cannot predict the slagging propensity and slag viscosity of low-rank coal, and especially biomass ashes, even if they are limited to a particular composition only. Thus, there is a critical need for the development of an index, or a model or even a measurement method, which can predict/measure the slagging propensity and slag viscosity correctly for all low-rank coal and biomass ashes.

关键词： slag viscosity biomass low-rank coal combustion gasification

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粘-温修正的等效粘度模型分析研究

曲庆文

《中国工程科学》 2005年第7卷第5期页码 49-52

摘要：

在等效粘度模型的基础上，考虑温度对润滑剂粘度的影响，建立了粘-温修正的等效粘度分析计算模型，并运用该模型进行薄膜润滑条件下的轴承性能分析计算，得到了不同参数下轴承性能的变化规律。

关键词：薄膜润滑粘度温度

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Crystallization and viscosity-temperature characteristics during co-gasification of industrial sludge

Linmin ZHANG, Bin LIU, Juntao WEI, Xudong SONG, Yonghui BAI, Jiaofei WANG, Ying ZHOU, Huijun YANG, Guangsuo YU

《能源前沿（英文）》 2022年第16卷第6期页码 1037-1047 doi: 10.1007/s11708-022-0824-x

摘要： Co-gasification of industrial sludge (IS) and coal was an effective approach to achieve harmless and sustainable utilization of IS. The long-term and stable operation of a co-gasification largely depends on fluidity of coal-ash slag. Herein, the effects of IS addition on the crystallization and viscosity of Shuangmazao (SMZ) coal were investigated by means of high temperature stage coupled with an optical microscope (HTSOM), a scanning electron microscopy coupled with an energy dispersive X-ray spectrometry (SEM-EDS), X-ray diffraction (XRD), a Fourier transform infrared spectrometer (FTIR), and FactSage software. The results showed that when the proportion of IS was less than 60%, with the addition of IS, the slag existed in an amorphous form. This was due to the high content of SiO₂ and Al₂O₃ in SMZ ash and blended ash, which had a high glass-forming ability (GFA). The slag formed at a high temperature had a higher polymerization degree and viscosity, which led to a decrease in the migration ability between ions, and ultimately made the slag difficult to crystallize during the cooling. When the proportion of IS was higher than 60%, the addition of IS increased the CaO and FeO content in the system. As network modifiers, CaO and FeO could provide O²⁻ at a high temperature, which reacted with silicate network structure and continuously destroyed the complexity of network structure, thus reducing the polymerization degree and viscosity of slag. At this time, the migration ability between ions was enhanced, and needle-shaped/rod-shaped crystals were precipitated during the cooling process. Finally, the viscosity calculated by simulation and Einstein-Roscoe empirical formula demonstrated that the addition of IS could significantly improve the fluidity of coal ash and meet the requirements of the liquid slag-tapping gasifier. The purpose of this work was to provide theoretical support for slag flow mechanisms during the gasifier slagging-tapping process and the resource treatment of industrial solid waste.

关键词： co-gasification industrial sludge crystallization viscosity mineral matter evolution

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指数型粘度修正模型及应用

曲庆文,王梅,柴山,姚福生

《中国工程科学》 2001年第3卷第10期页码 53-58

摘要：

根据吸附理论和分子间能量的变化规律来确定表面相互作用程度，以此可定义吸附层，得出吸附层厚度的分析计算式。吸附层厚度对研究薄膜润滑是最关键的因素，是薄膜与厚膜不同分析的关键点。根据分子相互作用的基本理论及流体力学的基本定义得出指数型粘度修正的表达式，用于确定微小间隙内流体粘度的变化规律，从而建立薄膜润滑理论模型，计算薄膜润滑轴承的特性。

关键词：吸附层粘度薄膜润滑轴承

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连续粘变条件下的速度场分析

曲庆文,王梅,陈海真,柴山,姚福生

《中国工程科学》 2002年第4卷第6期页码 29-32

摘要：

流体的流动状态将直接影响轴承的润滑特性，轴承的润滑特性主要由润滑剂的粘度决定。工作中润滑剂的粘度变化影响其运动速度的变化，从而影响润滑剂的温升及内剪切稀化的程度等。尤其在薄膜润滑中，润滑膜的厚度极小，润滑剂流体粒子间的相对运动速度增大，其润滑剂特性的变化更为突出。以连续变化的粘度修正模型来研究在微小间隙内润滑剂的速度特性，得出间隙内速度的分布规律，为研究薄膜流体温度场和剪切稀化问题提供计算数据。

关键词：薄膜润滑粘度连续模型速度

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新型高黏度改性沥青的研发和应用

杨林江

《中国工程科学》 2008年第10卷第12期页码 92-96

摘要：

针对杭州湾大桥桥面铺装对高黏度改性沥青的技术要求，研发了一种新型高黏度改性沥青［1］。通过分析基质沥青、SBS、化学助剂的红外光谱，在研究沥青改性过程中微观结构变化规律的基础上，提出了采用SBS加化学接枝反应剂（增黏剂）TW-1和增容剂TW-2的沥青改性配伍设计，使改性沥青在提高低温延度、弹性恢复能力的同时，大幅度提升了60 ℃动力黏度，而施工和易性不受影响，产品在杭州湾大桥工程中得到了成功的应用。

关键词：杭州湾大桥高黏度改性沥青配伍机理红外光谱分析路用性能施工性能

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炼化企业设备的本质安全可靠与监管智能化对策研究

王庆锋,刘家赫,柳建军,王学斌,李中

《中国工程科学》 2019年第21卷第6期页码 129-136 doi: 10.15302/J-SSCAE-2019.10.002

摘要：

国内炼化企业设备事故频发，设备本质安全可靠运行面临众多挑战，其中设备可靠性设计 /制造、风险管理、监测控制智能化是工程迫切需求。为提升炼化企业设备的本质安全可靠与监管智能化水平，本文揭示了设备本质安全可靠与监管智能化内涵，阐述了可靠性设计 /制造、风险管理、监测控制智能化技术发展趋势，提出了设备本质安全可靠与监管智能化的对策、措施和建议。完成了某催化装置的主风机本质安全可靠与监管智能化改造案例研究，结果表明设备本质安全可靠与监管智能化改造对设备安全运行具有重要工程意义。

关键词：本质安全可靠性设计可靠性制造风险管理监管智能化

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Intrinsic kinetics and external diffusion of catalytic steam gasification of fine coal char particles

Xuantao Wu, Jie Wang

《化学科学与工程前沿（英文）》 2019年第13卷第2期页码 415-426 doi: 10.1007/s11705-018-1725-8

摘要： Catalytic steam gasification of fine coal char particles was carried out using a self-made laboratory reactor to determine the intrinsic kinetics and external diffusion under varying pressures (0.1–0.5 MPa) and superficial gas flow velocities (GFVs) of 13.8–68.8 cm?s . In order to estimate the gas release rate at a low GFV, the transported effect of effluent gas on the temporal gasification rate pattern was simulated by the Fluent computation and verified experimentally. The external mass transfer coefficients ( ) and the effectiveness factors were determined at lower GFVs, based on the intrinsic gasification rate obtained at a high GFV of 55.0 cm?s . The was found to be almost invariable in a wider carbon conversion of 0.2–0.7. The variations of at a median carbon conversion with GFV, temperature and pressure were found to follow a modified Chilton-Colburn correlation: (0.04< <0.19), where is total pressure and is atmospheric pressure. An intrinsic kinetics/external diffusion integrating model could well describe the gasification rate as a function of GFV, temperature and pressure over a whole gasification process.

关键词： coal char catalytic steam gasification pressure kinetics diffusion

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基于判别扩散映射分析的内蕴特征提取方法在刀具磨损评估中的应用 None

Yi-xiang HUANG, Xiao LIU, Cheng-liang LIU, Yan-ming LI

《信息与电子工程前沿（英文）》 2018年第19卷第11期页码 1352-1361 doi: 10.1631/FITEE.1601512

摘要：针对铣削加工刀具磨损评估，提出一种基于判别扩散映射分析的方法。判别扩散映射分析（discriminant diffusion maps analysis，DDMA）用于时频域特征提取融合与维度缩减。通过保持内蕴特征空间的扩散距离，耦合时频域特征和判别内核，提取有效信息。该方法包含3个步骤：(1)信号处理与特征提取；(2)内蕴维度估计；(3)基于扩散距离保持的特征融合实现。将该方法应用于数控加工中心主轴驱动电流信号，评估刀具磨损状态。与常见主成分分析方法相比，该方法能更好保持刀具磨损状态相关的有用内蕴信息，大大降低与刀具磨损相关的特征维度，并可直接应用于大多数工业数控加工中心，方便获取电流信号实际情况。

关键词：刀具状态监测；流形学习；降维；扩散映射分析；内蕴特征提取

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表面张力作用下柱形胶体的弹性失稳

黄殿武,乔玲,汪时机

《中国工程科学》 2007年第9卷第4期页码 50-54

摘要：

采用弹性理论研究了圆柱形胶体在表面张力作用下的弹性失稳问题；利用能量泛函变分的方法导出了发生弹性失稳的非经典边界条件，得到了失稳的判据方程。分析判据方程发现，弹性失稳与圆柱体的半径、内禀尺度和失稳波长相关。

关键词：柱形胶体弹性失稳内禀尺度表面效应

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Properties of cement grout modified with ultra-fine slag

Sowmini GOPINATHAN, K B ANAND

《结构与土木工程前沿（英文）》 2018年第12卷第1期页码 58-66 doi: 10.1007/s11709-017-0383-0

摘要： The purpose of the study is to obtain a cement grout with improved performance. The grout mixes of the present study contain cement, ultra-fine slag (UFS), super plasticizer and water. Properties like flowability, bleeding, compressive strength and shrinkage of cement grouts have been studied. Rheological parameters were also studied in order to explain the grout workability. The results show that, cement replacement with slag in grouts could reduce bleeding substantially without affecting the workability of the mixes. Introduction of slag enhanced the compressive strength and reduced shrinkage reasonably. Ultra-fine slag can be used as a supplementary cementitious material in cementitious grouts in order to improve the grout behavior.

关键词： cement grout ultra-fine slag flowability bleeding viscosity

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标题作者时间类型操作

Tetra-detector size exclusion chromatography characterization of molecular and solution properties of soluble microbial polysaccharides from an anaerobic membrane bioreactor

Qingbin Guo,Sheng Chang

期刊论文

Combination of biomaterial transplantation and genetic enhancement of intrinsic growth capacities to

Bin Yu, Xiaosong Gu

期刊论文

Effect of different high viscosity modifiers on rheological properties of high viscosity asphalt

期刊论文

New approach to determine the plastic viscosity of self-compacting concrete

M. BENAICHA,X. ROGUIEZ,O. JALBAUD,Y. BURTSCHELL,A. Hafidi ALAOUI

期刊论文

A critical review of ash slagging mechanisms and viscosity measurement for low-rank coal and bio-slags

Md Tanvir ALAM, Baiqian DAI, Xiaojiang WU, Andrew HOADLEY, Lian ZHANG