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Biomimetic mineralization and cytocompatibility of nanorod hydroxyapatite/graphene oxide composites

Peizhen Duan, Juan Shen, Guohong Zou, Xu Xia, Bo Jin

《化学科学与工程前沿（英文）》 2018年 第12卷 第4期   页码 798-805 doi: 10.1007/s11705-018-1708-9

摘要： Nanorod hydroxyapatite (NRHA)/graphene oxide (GO) composites with weight ratios of 0.4, 1.5, and 5 have been fabricated by a facile ultrasonic-assisted method at room temperature and atmospheric pressure. The chemical structure properties and morphology of the composites were characterized by field emission source scanning electron microscope, X-ray diffraction, transmission electron microscopy, and high-resolution transmission electron microscopy. The results indicate that the NNRHA/GO composites have an irregular surface with different degree wrinkles and are stable, and NRHA are well combined with GO. In addition, the biomimetic mineralization mechanism of hydroxyapatite on the NNRHA/GO composites in simulated body fluid (SBF) is presented. The presence of a bone-like apatite layer on the composite surface indicate that the NNRHA/GO composites facilitate the nucleation and growth of hydroxyapatite crystals in SBF for biomimetic mineralization. Moreover, the NNRHA-1.5/GO composite and pure GO were cultured with MC3T3-E1 cells to investigate the proliferation and adhesion of cells. In vitro cytocompatibility evaluation demonstrated that the NNRHA/GO composite can act as a good template for the growth and adhesion of cells. Therefore, the NNRHA/GO composite could be applied as a GO-based, free-template, non-toxic, and bioactive composite to substitute for a damaged or defect bone.

关键词： hydroxyapatite     graphene oxide     biomimetic mineralization     cytocompatibility    

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Selective oxidation of o -nitrotoluene to o -nitrobenzaldehyde with metalloporphyrins as biomimetic catalysts

Xinling WANG, Yuanbin SHE,

《化学科学与工程前沿（英文）》 2009年 第3卷 第4期   页码 453-456 doi: 10.1007/s11705-009-0167-8

摘要： Selective oxidation of -nitrotoluene to -nitrobenzaldehyde with metalloporphyrins as biomimetic catalysts was studied. The peripheral substituent around porphyrin rings and various process parameters of NaOH concentration, reaction temperature, reaction time and oxygen pressure all affect the selectivity of -nitrobenzaldehyde. Further, 82.0% selectivity of -nitrobenzaldehyde was achieved under the optimum conditions: 1.0×10mol•L of T(-NO)PPFeCl catalyst, 2.5mol•L of NaOH, 0.2mol•L of -nitrotoluene, 45°C and 2.0MPa for 6h.

关键词： -nitrobenzaldehyde     temperature     biomimetic     selectivity     pressure    

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Bioinspired and biomimetic membranes for water purification and chemical separation: A review

《环境科学与工程前沿（英文）》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1412-8

摘要：

•The history of biological and artificial water channels is reviewed.

关键词： Aquaporins     Artificial water channels     Biomimetic membranes     Chemical separation and water purification    

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REGIONAL ASSESSMENT OF SOIL NITROGEN MINERALIZATION IN DIVERSE CROPLAND OF A REPRESENTATIVE INTENSIVE

《农业科学与工程前沿（英文）》 2023年 第10卷 第4期   页码 530-540 doi: 10.15302/J-FASE-2023515

摘要：

Soil nitrogen mineralization (Nmin) is a key process that converts organic N into mineral N that controls soil N availability to plants. However, regional assessments of soil Nmin in cropland and its affecting factors are lacking, especially in relation to variation in elevation. In this study, a 4-week incubation experiment was implemented to measure net soil Nmin rate, gross nitrification (Nit) rate and corresponding soil abiotic properties in five field soils (A–C, maize; D, flue-cured tobacco; and E, vegetables; with elevation decreasing from A to E) from different altitudes in a typical intensive agricultural area in Dali City, Yunnan Province, China. The results showed that soil Nmin rate ranged from 0.10 to 0.17 mg·kg−1·d−1 N, with the highest value observed in field E, followed by fields D, C, B, and A, which indicated that soil Nmin and Nit rates varied between fields, decreasing with elevation. The soil Nit rate ranged from 434.2 to 827.1 µg·kg−1·h−1 N, with the highest value determined in field D, followed by those in fields E, C, B, and A. The rates of soil Nmin and Nit were positively correlated with several key soil parameters, including total soil N, dissolved organic carbon and dissolved inorganic N across all fields, which indicated that soil variables regulated soil Nmin and Nit in cropland fields. In addition, a strong positive relationship was observed between soil Nmin and Nit. These findings provide a greater understanding of the response of soil Nmin among cropland fields related to spatial variation. It is suggested that the soil Nmin from cropland should be considered in the evaluation of the N transformations at the regional scale.

关键词： cropland     gross nitrification rate     regulatory factors     soil nitrogen mineralization     spatial variation    

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Preparation, with graphene, of novel biomimetic self-healing microcapsules with high thermal stability

《结构与土木工程前沿（英文）》   页码 1188-1198 doi: 10.1007/s11709-023-0027-5

摘要： This paper reports a comparative study of microcapsules with enhanced thermal stability and electrical conductivity inspired by the bionic thermal insulation of birds’ feathers for self-healing aged asphalt. The work is based on an in situ polymerization with composite shell components of graphene and hexamethoxymethylmelamine resin. By using graphene, microcapsules with rough surfaces are achieved, improving the interface between microcapsules and asphalt. In addition, the microcapsules’ initial thermal decomposition temperature is appropriately high, so that the stability of the microcapsule in the asphalt highway system is protected. The proportion of graphene in the microcapsule shell can regulate the microcapsule’s heat resistance because graphene modifies the shell’s structural makeup. Additionally, the microcapsules’ electrical conductivity is relatively high. The self-healing capability of bitumen sharply increases, providing benefit to the effect of microcapsules on the properties of aged asphalt.

关键词： graphene     microcapsule     bitumen     heat insulation     conductivity    

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EFFICIENT CONTAMINANT REMOVAL FROM LIQUID DIGESTATE OF PIG MANURE BY CHEMICAL PRECIPITATION AND CO MINERALIZATION

《农业科学与工程前沿（英文）》 2023年 第10卷 第3期   页码 479-491 doi: 10.15302/J-FASE-2023480

摘要：

● LFD was treated by fly ash-based chemical precipitation and CO2 mineralization.

关键词： anaerobic digestion     chemical oxygen demand     fly ash     ion removal     total phosphate    

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生物材料的仿生构思

姚康德,沈峰

《中国工程科学》 2000年 第2卷 第6期   页码 16-20

摘要：

过去30年里，生物材料的研究取得了显著成就，但从临床效果看，其与宿主相互作用亟待改善；哪怕是有些应用于长期埋植体内的替代物，常被机体视为异物，从而启迪人们不要仅着眼于从材料的物化性能方面构思生物材料。文章从蛋白质、糖类和脱氧核糖核酸与材料的关系出发，以细胞作为仿生生物材料的蓝本，从分子和细胞水平讨论了生物特异性材料设计，人工细胞外基质的仿生化途径以及通过材料对细胞编程凋亡的调控等方面的研究思路；试图从生命科学的广度和柔性出发，提出在不同层次和水平上进行仿生，从事生物材料设计，解决生物材料与生物体复杂接口问题，使生物材料向智能化和环境友好化发展。

关键词： 生物材料     仿生     人工细胞外基质    

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Roles of glutathione and L-cysteine in the biomimetic green synthesis of CdSe quantum dots

Ling-Li Li, Yin-Hua Cui, Jie-Jie Chen, Han-Qing Yu

《环境科学与工程前沿（英文）》 2017年 第11卷 第6期 doi: 10.1007/s11783-017-0948-0

摘要： Biological synthesis of quantum dots (QDs) as an environmental-friendly and facile preparation method has attracted increasing interests. However, it is difficult to distinguish the roles of bio-thiols in QDs synthesis process because of the complex nature in organisms. In this work, the CdSe QDs synthesis conditions in organisms were reconstructed by using a simplified in vitro approach to uncover the roles of two small bio-thiols in the QDs formation. CdSe QDs were synthesized with glutathione (GSH) and L-cysteine (Cys) respectively. Compared with Cys at the same molar concentration, the CdSe QDs synthesized by GSH had a larger and broader particle size distribution with improved optical properties and crystal structure. Furthermore, quantum chemical calculations indicate that the stronger Cd2+ binding capacity of GSH contributed a lot to the CdSe QDs formation despite of the greater capability Cys for selenite reduction. This work clearly demonstrates the different roles of small thiols in the Cd2+ stabilization in the environment and biomimetic QDs synthesis process.

关键词： CdSe     Quantum dots (QDs)     Biomimetic synthesis     Bio-thiols     Glutathione (GSH)     Cysteine (Cys)    

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水处理仿生膜研究进展

曾艳军,张林,陈欢林

《中国工程科学》 2014年 第16卷 第7期   页码 10-16

摘要：

本文首先介绍了细胞膜中磷脂双分子层与膜蛋白的结构以及水快速传输的机理。在此基础上分别对以膜蛋白、碳纳米管和人造有机纳米孔道为水通道的仿生膜研究进展进行了综述，着重阐述了以膜蛋白为水通道的仿生膜中两性嵌段共聚物基质的优点、规模化制备面临的问题；以碳纳米管为水通道的仿生膜中水快速传输的机理与膜的制备方法；以及人造有机纳米孔道的设计方法。最后提出了水处理仿生膜所面临的挑战，展望了仿生膜发展的前景。

关键词： 细胞膜     水通道蛋白     仿生膜     碳纳米管     人造水通道    

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Highly efficient and selective removal of vanadium from tungstate solutions by microbubble floating-extraction

《化学科学与工程前沿（英文）》 2023年 第17卷 第5期   页码 581-593 doi: 10.1007/s11705-022-2235-2

摘要： Selective separation of dissolved tungsten and vanadium is of great significance for the utilization of the secondary resources of these elements. In this work, selective removal of vanadium from tungstate solutions via microbubble floating-extraction was systematically investigated. The results indicated that vanadium can be more easily mineralized over tungsten from tungstate solutions using methyl trioctyl ammonium chloride as mineralization reagent under weak alkaline conditions. Owing to the higher bubble and interface mass transfer rates, high-efficiency enrichment and deep separation of vanadium could be achieved easily. Additionally, the deep recovery of tungsten and vanadium from the floated organic phase could be easily realized using a mixed solution of sodium hydroxide and sodium chloride as stripping agents. The separation mechanism mainly included the formation of hydrophobic complexes, their attachment on the surface of rising bubbles, and their mass transfer at the oil–water interface. Under the optimal conditions, the removal efficiency of vanadium reached 98.5% with tungsten loss below 8% after two-stage microbubble floating-extraction. Therefore, the microbubble floating-extraction could be an efficient approach for separating selectively vanadium from tungstate solutions, exhibiting outstanding advantages of high separation efficiency and low consumption of organic solvents.

关键词： tungsten     vanadium     selective separation     reagent mineralization     microbubble floating-extraction    

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Adsorption in combination with ozonation for the treatment of textile waste water: a critical review

Shraddha Khamparia,Dipika Kaur Jaspal

《环境科学与工程前沿（英文）》 2017年 第11卷 第1期 doi: 10.1007/s11783-017-0899-5

摘要： A combination of adsorption with ozonation proved best for dye removal. Toxicity of the textile effluents can be remarkably reduced by combined method. Wide scope for choice of natural materials for treatment of textile dyes. Intrusion of synthetic textile dyes in the ecosystem has been recognized as a serious issue worldwide. The effluents generated from textiles contain large amount of recalcitrant unfixed dyes which are regarded as emerging contaminants in the field of waste water study. Removal of various toxic dyes often includes diverse and complex set of physico-chemical, biological and advanced oxidation processes adopted for treatment. Adsorption in itself is a well-known technique utilized for treatment of textile effluents using a variety of adsorbents. In addition, ozonation deals with effective removal of dyes using high oxidising power of ozone. The review summarizes dye removal study by a combination of ozonation and adsorption methods. Also, to acquire an effective interpretation of this combined approach of treating wastewater, a thorough study has been made which is deliberated here. Results asserts that, with the combined ability of ozone and a catalyst/adsorbent, there is high possibility of total elimination of dyes from waste water. Several synthetically prepared materials have been used along with few natural materials during the combined treatment. However, considering practical applicability, some areas were identified during the study where work needs to be done for effective implementation of the combined treatment.

关键词： Adsorption     Ozonation     Catalytic Ozonation     Textile dyes     Mineralization    

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Challenges of a feasible route towards sustainability in environmental protection

G. LETTINGA

《环境科学与工程前沿（英文）》 2010年 第4卷 第2期   页码 123-134 doi: 10.1007/s11783-010-0028-1

摘要： Anaerobic processes for treatment of low and high strength wastewaters and solid wastes constitute the core method in the natural biological mineralization (NBM) treatment concept. When adequately combined with the complementary NBM-systems and modern clean water saving practices in wastewater collection and transport, they represent a feasible route to sustainable environmental protection (EP), in essence even towards a more sustainable society. Despite the development and implementation of modern high rate Anaerobic Wastewater Treatment (AnWT-) systems and complementary innovative NBM-processes, the considerable progress made since the seventies in fundamental insights in microbiology, biochemistry and process technology, still numerous challenging improvements in the NBM-field can be realized. This contribution is mainly based on the insights attained from wide ranging literature evaluations and the results of experimental research conducted by numerous PhD students who participated in our group over the last four decades. An attempt is made here to identify major facets on which an improved insight can, and consequently should, be obtained in order to accomplish more optimal operation and design of various types of Anaerobic Degradation (AnDeg-) processes.

关键词： sustainability     environmental protection     anaerobic treatment     micro-aerobic treatment     natural biological mineralization concept     traces elements     macro-nutrients    

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微小型机器鼠仿鼠行为学习与生成

高子航, 贾广禄, 谢宏钊, 黄强, 福田敏男, 石青

《工程（英文）》 2022年 第17卷 第10期   页码 232-243 doi: 10.1016/j.eng.2022.05.012

摘要：

现有的仿生机器鼠仅可以执行一些基本的仿鼠运动基元（MP），并通过这些基元的刚性组合来形成简单的行为。为了模拟具有高相似性的典型实验鼠行为，本文提出使用概率模型和运动特征对实验鼠的行为进行参数化。首先，对15 个10 min 的实验鼠运动视频片段的分析表明，一只实验鼠在野外通常有6 种典型的行为，且每种行为都包含8 个运动基元的不同组合。本文首先使用softmax 分类器来获得实验鼠的行为-运动分层概率模型。其次，使用静态和动态的运动参数对运动基元组合进行特征化。本文分别使用分层聚类和模糊C均值（FCM）聚类获得静态和动态运动参数的优势值。这些优势值通过二阶傅里叶级数对实验鼠的脊柱关节轨迹进行拟合，并且通过具有两个隐藏层的反向传播（BP）神经网络对关节轨迹进行泛化。最后，将分层概率模型和泛化的关节轨迹分别作为控制策略和指令映射到机器鼠。本文在机器鼠上实现了6 种典型的仿鼠行为，其结果与实验鼠的行为相比显示出高度相似性。

关键词： 仿生学     微小型机器鼠     神经网络学习     行为生成    

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Learning from biological attachment devices: applications of bioinspired reversible adhesive methods in robotics

《机械工程前沿（英文）》 2022年 第17卷 第3期 doi: 10.1007/s11465-022-0699-x

摘要： Many organisms have attachment organs with excellent functions, such as adhesion, clinging, and grasping, as a result of biological evolution to adapt to complex living environments. From nanoscale to macroscale, each type of adhesive organ has its own underlying mechanisms. Many biological adhesive mechanisms have been studied and can be incorporated into robot designs. This paper presents a systematic review of reversible biological adhesive methods and the bioinspired attachment devices that can be used in robotics. The study discussed how biological adhesive methods, such as dry adhesion, wet adhesion, mechanical adhesion, and sub-ambient pressure adhesion, progress in research. The morphology of typical adhesive organs, as well as the corresponding attachment models, is highlighted. The current state of bioinspired attachment device design and fabrication is discussed. Then, the design principles of attachment devices are summarized in this article. The following section provides a systematic overview of climbing robots with bioinspired attachment devices. Finally, the current challenges and opportunities in bioinspired attachment research in robotics are discussed.

关键词： adhesion     bioinspired attachment     biomimetic gripper     climbing robot    

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个旧锡矿地球化学及成矿作用演化

秦德先,黎应书,范柱国,陈爱兵,谈树成,洪托,李连举,林小平

《中国工程科学》 2006年 第8卷 第1期   页码 30-39

摘要：

关于个旧锡矿床的成因，过去多数人持“花岗岩岩浆期后热液成矿”观点。笔者的研究成果表明，个旧锡矿具有多期、多源成矿，可划分为3个成矿系列，即印支期海底基性火山成矿系列、海底喷流成矿系列和燕山晚期花岗岩改造（叠加）成矿系列，成矿模式可归结为“裂谷环境—火山沉积—喷流热水沉积—花岗岩叠加改造”；在划分成矿系列的基础上，重点从矿床的微量及稀土元素、稳定同位素及流体包裹方面来论证新的成矿观点。

关键词： 个旧锡矿     地球化学     稳定同位素     成矿作用演化    

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标题 作者 时间 类型 操作

Biomimetic mineralization and cytocompatibility of nanorod hydroxyapatite/graphene oxide composites

Peizhen Duan, Juan Shen, Guohong Zou, Xu Xia, Bo Jin

期刊论文

Selective oxidation of o -nitrotoluene to o -nitrobenzaldehyde with metalloporphyrins as biomimetic catalysts

Xinling WANG, Yuanbin SHE,

期刊论文

Bioinspired and biomimetic membranes for water purification and chemical separation: A review

期刊论文

REGIONAL ASSESSMENT OF SOIL NITROGEN MINERALIZATION IN DIVERSE CROPLAND OF A REPRESENTATIVE INTENSIVE

期刊论文

Preparation, with graphene, of novel biomimetic self-healing microcapsules with high thermal stability

期刊论文

EFFICIENT CONTAMINANT REMOVAL FROM LIQUID DIGESTATE OF PIG MANURE BY CHEMICAL PRECIPITATION AND CO MINERALIZATION

期刊论文

生物材料的仿生构思

姚康德,沈峰

期刊论文

Roles of glutathione and L-cysteine in the biomimetic green synthesis of CdSe quantum dots

Ling-Li Li, Yin-Hua Cui, Jie-Jie Chen, Han-Qing Yu

期刊论文

水处理仿生膜研究进展

曾艳军,张林,陈欢林

期刊论文

Highly efficient and selective removal of vanadium from tungstate solutions by microbubble floating-extraction

期刊论文

Adsorption in combination with ozonation for the treatment of textile waste water: a critical review

Shraddha Khamparia,Dipika Kaur Jaspal

期刊论文

Challenges of a feasible route towards sustainability in environmental protection

G. LETTINGA

期刊论文

微小型机器鼠仿鼠行为学习与生成

高子航, 贾广禄, 谢宏钊, 黄强, 福田敏男, 石青

期刊论文

Learning from biological attachment devices: applications of bioinspired reversible adhesive methods in robotics

期刊论文

个旧锡矿地球化学及成矿作用演化

秦德先,黎应书,范柱国,陈爱兵,谈树成,洪托,李连举,林小平

期刊论文