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pH值 1

可降解塑料 1

可降解材料 1

水解反应 1

淀粉 1

生物基材料 1

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种子细胞 1

组织器官重建 1

组织工程 1

聚乳酸 1

裂纹扩展 1

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the performance of traditional advection-dispersion equation and mobile-immobile model for simulating solute

Haizhu HU,Xiaomin MAO

《农业科学与工程前沿（英文）》 2016年第3卷第3期页码 241-248 doi: 10.15302/J-FASE-2016108

摘要： The traditional advection-dispersion equation (ADE) and the mobile-immobile model (MIM) are widely used to describe solute transport in heterogeneous porous media. However, the fitness of the two models is case-dependent. In this paper, the transport of conservative, adsorbing and degradable solutes through a 1 m heterogeneous soil column under steady flow condition was simulated by ADE and MIM, and sensitivity analysis was conducted. Results show that MIM tends to prolong the breakthrough process and decrease peak concentration for all three solutes, and tailing and skewness are more pronounced with increasing dispersivity. Breakthrough curves of the adsorbing solute simulated by MIM are less sensitive to the retardation factor compared with the results simulated by ADE. The breakthrough curves of degradable solute obtained by MIM and ADE nearly overlap with a high degradation rate coefficient, indicating that MIM and ADE perform similarly for simulating degradable solute transport when biochemical degradation prevails over the mass exchange between mobile and immobile zones. The results suggest that the physical significance of dispersivity should be carefully considered when MIM is applied to simulate the degradable solute transport and/or ADE is applied to simulate the adsorbing solute transport in highly dispersive soils.

关键词： solute transport advection dispersion equation (ADE) mobile-immobile model (MIM) conservative solute adsorbing solute degradable solute PHREEQC-2

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Chemically reactive solute transfer in a boundary layer slip flow along a stretching cylinder

Swati Mukhopadhyay

《化学科学与工程前沿（英文）》 2011年第5卷第3期页码 385-391 doi: 10.1007/s11705-011-1101-4

摘要： This paper presents the distribution of a solute undergoing a first order chemical reaction in an axisymmetric laminar boundary layer flow along a stretching cylinder. Velocity slip condition at the boundary is used instead of no-slip condition. Similarity transformations are used to convert the partial differential equations corresponding to momentum and concentration into highly nonlinear ordinary differential equations. Numerical solutions of these equations are obtained by the shooting method. The velocity decreases with increasing slip parameter. The skin friction as well as the mass transfer rate at the surface is larger for a cylinder than for a flat plate.

关键词： boundary layer stretching cylinder partial slip mass transfer similarity solution

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Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction

Krishnendu BHATTACHARYYA, G. C. LAYEK

《化学科学与工程前沿（英文）》 2011年第5卷第4期页码 471-476 doi: 10.1007/s11705-011-1130-z

摘要： The magnetohydrodynamic (MHD) boundary layer slip flow and solute transfer over a porous plate in the presence of a chemical reaction are investigated. The governing equations were transformed into self-similar ordinary differential equations by adopting the similarity transformation technique. Then the numerical solutions are obtained by a shooting technique using the fourth order Runge-Kutta method. The study reveals that due to the increase in the boundary slip, the concentration decreases and the velocity increases. On the other hand, with an increase in the magnetic field and mass suction, both boundary layer thicknesses decreased. As the Schmidt number and the reaction rate parameter increases, the concentration decreases and the mass transfer increases.

关键词： slip flow MHD boundary layer reactive solute diffusion flat plate suction/injection

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Correction to: Highly degradable chitosan-montmorillonite (MMT) nanocomposite hydrogel for controlled

《环境科学与工程前沿（英文）》 2023年第17卷第8期 doi: 10.1007/s11783-023-1704-2

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Lithium-based draw solute for forward osmosis to treat wastewater discharged from lithium-ion battery

《化学科学与工程前沿（英文）》 2022年第16卷第5期页码 755-763 doi: 10.1007/s11705-022-2137-3

摘要： As draw solute is the core element of forward osmosis (FO) technology, here Li-Bet-Tf₂N synthesized from a customized ionic liquid betainium bis(trifluoromethylsulfonyl)imide ([Hbet][Tf₂N]) and Li₂CO₃ recovered from lithium-ion battery (LIB) wastes is proposed as a novel draw solute to treat Li⁺-containing wastewater from LIB manufacturing through FO filtration. Having high dissociation ability and an extended structure, Li-Bet-Tf₂N generates a sufficiently high osmotic pressure to drive the FO filtration efficiently along with insignificant reverse solute diffusion. Li-Bet-Tf₂N produces a water flux of 21.3 L·(m²·h)⁻¹ at 1.0 mol∙L^–1 against deionized water, surpassing conventional NaCl and MgCl₂ draw solutes with a higher water recovery efficiency and a smaller solute loss. Li-Bet-Tf₂N induces a more stable and higher water permeation flux with a 10.0% water flux decline than NaCl and MgCl₂ for which the water fluxes decline 16.7% and 16.4%, respectively, during the treatment of 2000 mg∙L^–1 Li⁺-containing wastewater for 12 h. More remarkably, unlike other draw solutes which require intensive energy input and complicated processes in recycling, Li-Bet-Tf₂N is easily separated from water via solvent extraction. Reproducible results are achieved with the recycled Li-Bet-Tf₂N. Li-Bet-Tf₂N thus demonstrates a novel class of draw solute with great potentials to treat wastewater economically.

关键词： forward osmosis lithium-ion battery draw solution lithium-containing wastewater water treatment

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Submerged arc plasma system combined with ozone oxidation for the treatment of wastewater containing non-degradable

《环境科学与工程前沿（英文）》 2021年第15卷第5期 doi: 10.1007/s11783-020-1384-0

摘要：

• Submerged arc plasma was introduced in terms of wastewater treatment.

关键词： Thermal plasma Submerged arc plasma Wastewater Ozone Phenol Highly energetic electron

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生物基全降解复合材料

刘小刚,王莉,李十中,樊琛语

《中国工程科学》 2011年第13卷第2期页码 90-95

摘要：

淀粉/聚乳酸复合具有相对较好的力学性能和生物降解性能，价格也与石油基塑料最为接近，是极具应用前景的全生物降解塑性材料。在分析国内外聚乳酸、淀粉及其复合材料研究现状的基础上，对该类材料的技术发展方向和工业化前景进行了展望。

关键词：研究进展生物基材料降解淀粉聚乳酸

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组织工程学——现代生物生命科学的前沿

张涤生

《中国工程科学》 2000年第2卷第10期页码 21-25

摘要：

组织工程是应用细胞生物学和工程学的原理研究和开发，以达到修复和重建损伤的组织或器官的外形和功能的生物替代物的一门新学科，是继细胞生物学和分子生物学后，人类生命科学发展史上又一新的里程碑，标志着医学将超越组织和器官移植的旧模式，进人制造组织和器官的新时代，将在21世纪中绽露头角。

文章简略介绍世界组织工程发展历史及各类组织和器官组织工程的研究现状，并介绍我国组织工程科研工作开展的最新情况。目前组织工程已有了迅猛发展，在不少方面已取得重大突破。由于其孕育的巨大科学价值_及广阔的研究和应用前景，因此加快我国组织工程的研究，尽早地投人临床应用，对我国医学科学事业和国民经济的发展具有重大意义。

关键词：组织工程可降解材料组织器官重建种子细胞

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容易断裂的可降解塑料 Letter

杨栩旭, Jason Steck, 杨加伟, 王叶成, 锁志刚

《工程（英文）》 2021年第7卷第5期页码 624-629 doi: 10.1016/j.eng.2021.02.009

摘要：

可降解塑料可以在特定环境中发生降解反应。上述降解反应动态过程的表征，往往通过测量塑料的质量和力学强度随时间的变化来实现。然而在塑料受到非均质降解的情况下，以上表征方法所得到的结果具有不准确性。本文研究了一种非均质的降解过程：可降解塑料在化学和外力的共同作用下，其中的裂纹发生扩展。在外力作用下，裂纹被打开，裂纹尖端暴露于化学侵蚀作用下，使其扩展速率超过整体均质降解速率。本文以聚乳酸（PLA）降解中的裂纹扩展为研究对象。PLA是一种聚酯类塑料，包含可被水解的酯键。使用剪刀在PLA薄膜上引入初始裂纹，然后搭建装置将其撕裂，并用显微镜记录裂纹的扩展过程。最终发现在加载的能量释放率范围内，裂纹扩展速率对载荷的变化不敏感，却对湿度和pH值具有较高的敏感性。这些发现将有助于可降解塑料的发展，并在医疗行业和环境可持续性发展方面具有重要意义。

关键词：可降解塑料水解反应 pH值裂纹扩展