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城市地下基础设施；碳中和；全生命周期；源头端；消费端；固碳端 1

复杂严重髋臼骨缺损 1

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of CdMoO micron polyhedron with Pt nanoparticle and their enhanced photocatalytic performance in N fixation

《化学科学与工程前沿（英文）》 2023年 第17卷 第12期   页码 1949-1961 doi: 10.1007/s11705-023-2360-6

摘要： This study aimed to prepare and apply a novel Pt/CdMoO4 composite photocatalyst for photocatalytic N2 fixation and tetracycline degradation. The Pt/CdMoO4 composite was subjected to comprehensive investigation on the morphology, structure, optical properties, and photoelectric chemical properties. The results demonstrate the dispersion of Pt nanoparticles on the CdMoO4 surface. Close contact between CdMoO4 and Pt was observed, resulting in the formation of a heterojunction structure at their contact region. Density functional theory calculation and Mott-Schottky analysis revealed that Pt possesses a higher work function value than CdMoO4, resulting in electron drift from CdMoO4 to Pt and the formation of a Schottky barrier. The presence of this barrier increases the separation efficiency of electron-hole pairs, thereby improving the performance of the Pt/CdMoO4 composite in photocatalysis. When exposed to simulated sunlight, the optimal Pt/CdMoO4 catalyst displayed a photocatalytic nitrogen fixation rate of 443.7 μmol·L‒1·g‒1·h‒1, which is 3.2 times higher than that of pure CdMoO4. In addition, the composite also exhibited excellent performance in tetracycline degradation, with hole and superoxide species identified as the primary reactive species. These findings offer practical insights into designing and synthesizing efficient photocatalysts for photocatalytic nitrogen fixation and antibiotics removal.

关键词： photocatalytic N2 fixation     Pt/CdMoO4     tetracycline degradation     Schottky barrier    

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Carbon dioxide fixation by

Xuan JIA, Hai YAN, Zijing WANG, Huanju HE, Qianqian XU, Haiou WANG, Chunhua YIN, Liqin LIU

《环境科学与工程前沿（英文）》 2011年 第5卷 第3期   页码 402-408 doi: 10.1007/s11783-010-0223-0

摘要： A promising microalgal strain isolated from fresh water, which can grow both autotrophically on inorganic carbon under lighting and heterotrophically on organic carbon without lighting, was identified as sp. USTB-01 with the phylogenetic analysis based on 18S ribosomal ribonucleic acid (rRNA) gene sequences. In the heterotrophic batch culture, more than 20.0 g·L of cell dry weight concentration (DWC) of sp. USTB-01 was obtained at day 5, and which was used directly to seed the autotrophic culture. A novel fermentor-helical combined photobioreactor was established and used to cultivate sp. USTB-01 for the fixation of carbon dioxide (CO ). It showed that the autotrophic growth of sp. USTB-01 in the combined photobioreactor was more effective than that in the fermentor alone and the maximum DWC of 2.5 g·L was obtained at day 6. The highest CO fixation of 95% appeared on day 1 in the exponential growth phases of sp. USTB-01 and 49.8% protein was found in the harvested microalgal cells.

关键词： Chlorella sp. USTB-01     carbon dioxide fixation     combined photobioreactor    

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Cu-doped Bi/Bi2WO6 catalysts for efficient N2 fixation by photocatalysis

《化学科学与工程前沿（英文）》 2023年 第17卷 第10期   页码 1412-1422 doi: 10.1007/s11705-023-2312-1

摘要： In this paper, Cu-doped Bi2WO6 was synthesized via a solvothermal method and applied it in photocatalytic N2 immobilization. Characterization results showed the presence of a small amount of metallic Bi in the photocatalyst, indicating that the synthesized photocatalyst is actually Bi/Cu-Bi2WO6 composite. The doped Cu had a valence state of +2 and most likely substituted the position of Bi3+. The introduced Cu did not affect the metallic Bi content, but mainly influenced the energy band structure of Bi2WO6. The band gap was slightly narrowed, the conduction band was elevated, and the work function was reduced. The reduced work function improved the transfer and separation of charge carriers, which mainly caused the increased photoactivity. The optimized NH3 generation rates of Bi/Cu-Bi2WO6 reached 624 and 243 μmol·L–1·g–1·h–1 under simulated solar and visible light, and these values were approximately 2.8 and 5.9 times higher those of Bi/Bi2WO6, respectively. This research provides a method for improving the photocatalytic N2 fixation and may provide more information on the design and preparation of heteroatom-doped semiconductor photocatalysts for N2-to-NH3 conversion.

关键词： Bi2WO6     Cu doping     work function     photocatalytic N2 fixation     charge separation    

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INTERCROPPING TEA PLANTATIONS WITH SOYBEAN AND RAPESEED ENHANCES NITROGEN FIXATION THROUGH SHIFTS IN

《农业科学与工程前沿（英文）》 2022年 第9卷 第3期   页码 344-355 doi: 10.15302/J-FASE-2022451

摘要：

● Intercropping change soil bacterial communities in tea plantations.

关键词： intercropping     rapeseed     soil microbe     soybean     tea garden    

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A mini review on chemical fixation of CO 2 : Absorption and catalytic conversion into cyclic carbonates

Weili DAI, Chaktong AU, Shenglian LUO, Shuangfeng YIN,

《化学科学与工程前沿（英文）》 2010年 第4卷 第2期   页码 163-171 doi: 10.1007/s11705-009-0235-0

摘要： In this article, we present our research results on chemical fixation of CO using organobismuth compounds. We fabricated bismuth biphenoate complex, Zn-Mg-Al composite oxides, and SBA-15 or Al-SBA-15 immobilized hydroxyl ionic liquid for CO cycloaddition onto epoxides. The hypervalent bismuth compounds show good ability for association and dissociation with CO. The bismuth biphenolate complexes are catalytically effective for the cycloaddition reaction. The heterogeneous catalysts, viz. Zn-Mg-Al oxides and SBA-15 or Al-SBA-15 immobilized ionic liquid, are efficient for the synthesis of cyclic carbonate from CO and epoxide. It is found that the presence of a trace amount of water can improve the catalytic activity of the immobilized ionic liquid.

关键词： SBA-15     CO cycloaddition     Al-SBA-15 immobilized     CO     dissociation    

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Effect of surgical factors on the augmentation of cement-injectable cannulated pedicle screw fixation

Haolin Sun, Chun Liu, Shunlun Chen, Yanjie Bai, Huilin Yang, Chunde Li, Lei Yang

《医学前沿（英文）》 2019年 第13卷 第5期   页码 590-601 doi: 10.1007/s11684-019-0710-z

摘要： Bone cement-augmented pedicle screw system demonstrates great efficacy in spinal disease treatments. However, the intrinsic drawbacks associated with clinically used polymethylmethacrylate (PMMA) cement demands for new bone cement formulations. On the basis of our previous studies, a novel injectable and biodegradable calcium phosphate-based nanocomposite (CPN) for the augmentation of pedicle screw fixation was systematically evaluated for its surgical feasibility and biomechanical performance by simulated and animal osteoporotic bone models, and the results were compared with those of clinical PMMA cement. ASTM-standard solid foam and open-cell foam models and decalcified sheep vertebra models were employed to evaluate the augmentation effects of CPN on bone tissue and on the cement-injected cannulated pedicle screws (CICPs) placed in osteoporotic bone. Surgical factors in CICPs application, such as injection force, tapping technique, screw diameter, and pedicle screw loosening scenarios, were studied in comparison with those in PMMA. When directly injected to the solid foam model, CPN revealed an identical augmentation effect to that of PMMA, as shown by the similar compressive strengths (0.73±0.04 MPa for CPN group vs. 0.79±0.02 MPa for PMMA group). The average injection force of CPN at approximately 40–50 N was higher than that of PMMA at approximately 20 N. Although both values are acceptable to surgeons, CPN revealed a more consistent injection force pattern than did PMMA. The dispersing and anti-pullout ability of CPN were not affected by the surgical factors of tapping technique and screw diameter. The axial pullout strength of CPN evaluated by the decalcified sheep vertebra model revealed a similar augmentation level as that of PMMA (1351.6±324.2 N for CPN vs. 1459.7±304.4 N for PMMA). The promising results of CPN clearly suggest its potential for replacing PMMA in CICPs augmentation application and the benefits of further study and development for clinical uses.

关键词： bone cement     pedicle screw     degenerative spinal diseases     calcium phosphate     injectable    

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Strategies for improving fertilizer phosphorus use efficiency in Chinese cropping systems

Gu FENG, Jingping GAI, Xionghan FENG, Haigang LI, Lin ZHANG, Keke YI, Jialong LV, Yiyong ZHU, Li TANG, Yilin LI

《农业科学与工程前沿（英文）》 2019年 第6卷 第4期   页码 341-347 doi: 10.15302/J-FASE-2019280

摘要：

A four-year project, entitled “The mechanisms of fraction transformation and high use efficiency of P fertilizer in Chinese cropping systems” commenced in 2017. The project was established to answer three key questions and looked at 17 cropping systems on ten soils. First, we asked what are the dynamics of transformation, fixation and mobilization of P fertilizers in soil-cropping systems? Second, what are the mechanisms of soil-crop-microbe interactions by which P fertilizer can be efficiently used? Third, how to manipulate the processes of P use in cropping systems? The targets of this project are (1) to explore the mechanisms of P fixation, the pathways of loss of P availability and the threshold of migration of fertilizer P in the field; (2) to uncover mechanisms by which soil legacy P is mobilized through root physiological and morphological processes and through arbuscular mycorrhizal fungi and P-solubilizing bacteria in rhizosphere and hyphosphere; (3) to estimate the biological potential of crops for high efficiency P absorption and use; (4) to innovate new approaches for improving the efficiency of P fertilizers. The outcomes will provide theoretical support for setting standards for limitation of P fertilizer application rate in the main cropping zones of China.

关键词： fixation     mobilization     phosphorus fertilizer     rhizosphere     transformations     utilization    

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首座大型生物除铁除锰水厂的实践

李冬,杨宏,张杰

《中国工程科学》 2003年 第5卷 第7期   页码 53-57

摘要：

以生物固锰除锰理论为指导，设计了弱曝气一级过滤生物除铁除锰简缩流程。采集了土著除锰菌扩增后接种于除铁除锰滤层，再经2～3个月的滤层培养，取得了强劲的除锰能力。当原水Mn2+为1～3 mg/L，Fe2+为0.1～0.5 mg/L，在正常滤速下，滤后水Mn2+减至0.05 mg/L，总铁为痕量，优于国家标准。该厂出水常年良好稳定，满足了高新产业优良用水之需。生物固锰除锰理论的工程实践解决了半个世纪以来水质净化工程上除锰的难题，创建了我国乃至世界上首座大型生物除铁除锰水厂。

关键词： 生物固锰除锰     弱曝气     简缩流程     同时去除    

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Cyanobacterial photo-driven mixotrophic metabolism and its advantages for biosynthesis

Ni Wan,Mary Abernathy,Joseph Kuo-Hsiang Tang,Yinjie J. Tang,Le You

《化学科学与工程前沿（英文）》 2015年 第9卷 第3期   页码 308-316 doi: 10.1007/s11705-015-1521-7

摘要： Cyanobacterium offers a promising chassis for phototrophic production of renewable chemicals. Although engineered cyanobacteria can achieve similar product carbon yields as heterotrophic microbial hosts, their production rate and titer under photoautotrophic conditions are 10 to 100 folds lower than those in fast growing Cyanobacterial factories face three indomitable bottlenecks. First, photosynthesis has limited ATP and NADPH generation rates. Second, CO fixation by ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) has poor efficiency. Third, CO mass transfer and light supply are deficient within large photobioreactors. On the other hand, cyanobacteria may employ organic substrates to promote phototrophic cell growth, N fixation, and metabolite synthesis. The photo-fermentations show enhanced photosynthesis, while CO loss from organic substrate degradation can be reused by the Calvin cycle. In addition, the plasticity of cyanobacterial pathways (e.g., oxidative pentose phosphate pathway and the TCA cycle) has been recently revealed to facilitate the catabolism. The use of cyanobacteria as “green ” could be a promising route to develop robust photo-biorefineries.

关键词： CO2 mass transfer     N2 fixation     photosystem     RuBisCO     the TCA cycle    

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城市地下基础设施低碳发展策略研究

王国盛,季港澳,路德春,杜修力

《中国工程科学》 2023年 第25卷 第1期   页码 30-37 doi: 10.15302/J-SSCAE-2023.01.012

摘要：

在韧性城市、海绵城市与城市更新的背景下，城市地下基础设施作为城市建设的重要部分，其低碳、安全、协调发展对推动城市高质量发展，助力我国“双碳”目标实现具有重要作用。本文通过总结城市地下基础设施低碳发展的现状及存在的问题，提出了新建和既有城市地下基础设施低碳发展的实施路径与策略。研究认为，对于新建城市地下基础设施，以源头端、消费端、固碳端三端为抓手，提出了在规划设计、建造物化、运行维护阶段等全面考虑城市地下基础设施全生命周期的低碳发展策略；对于既有城市地下基础设施，提出了电气化、智能化和实用化的绿色改造策略以及新老交汇、和而不同的绿色扩建策略。为进一步推动我国城市地下基础设施低碳发展，从摸清城市地下基础设施温室气体排放家底、完善城市地下基础设施低碳发展顶层设计、加强城市地下基础设施低碳发展技术研发、加强城市地下基础设施低碳发展政策倾斜4个方面提出了对策建议。

关键词： 城市地下基础设施；碳中和；全生命周期；源头端；消费端；固碳端    

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Heterologous expression of

Di Li,Swati Yewalkar,Xiaotao Bi,Sheldon Duff,Dusko Posarac,Heli Wang,Layne A. Woodfin,Jan-Hendrik Hehemann,Sheila C. Potter,Francis E. Nano

《环境科学与工程前沿（英文）》 2017年 第11卷 第2期 doi: 10.1007/s11783-017-0910-1

摘要： Maximum growth rate of mutant was 0.083 h with 5% CO . Maximum biomass concentration of mutant was 3.697 g·L . mutant can tolerate gas aeration with 15% CO . Maximum specific activity of laminarinase was 4.325 U·mg dry mass. Optimal pH and temperature of laminarinase activity were 8.0 and 70°C. The gene for the catalytic domain of thermostable endo-β-1,3-glucanase (laminarinase) LamA was cloned from Thermotoga maritima MSB8 and heterologously expressed in a bioengineered Synechococcus sp. PCC 7002. The mutant strain was cultured in a photobioreactor to assess biomass yield, recombinant laminarinase activity, and CO2 uptake. The maximum enzyme activity was observed at a pH of 8.0 and a temperature of 70°C. At a CO2 concentration of 5%, we obtained a maximum specific growth rate of 0.083 h , a biomass productivity of 0.42 g·L ·d , a biomass concentration of 3.697 g·L , and a specific enzyme activity of the mutant strain of 4.325 U·mg dry mass. All parameters decreased as CO2 concentration increased from 5% to 10% and further to 15% CO2, except enzyme activity, which increased from 5% to 10% CO2. However, the mutant culture still grew at 15% CO2 concentration, as reflected by the biomass productivity (0.26 g·L ·d ), biomass concentration (2.416 g·L ), and specific enzyme activity (3.247 U·mg dry mass).

关键词： Synechococcus sp. PCC 7002     Thermotoga maritima     LamA gene     Endo-β-1     3-glucanase     CO2 fixation    

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3D打印髋关节假体为复杂髋臼骨缺损翻修全髋关节置换术提供精准重建、稳定固定和功能恢复 Article

郝永强, 王磊, 姜闻博, 武文, 艾松涛, 沈路, 赵双, 戴尅戎

《工程（英文）》 2020年 第6卷 第11期   页码 1285-1290 doi: 10.1016/j.eng.2020.04.013

摘要：

复杂而严重的髋臼骨缺损是人工髋关节置换术重建过程中最主要的挑战和难点。本研究旨在探讨3D打印技术在重建这种复杂髋臼骨缺损中的优势。我们回顾性分析了3例使用3D打印技术治疗的复杂髋臼骨缺损患者的预后，其中一例患者涉及双侧缺损重建。这些髋臼骨缺损的共同特点为常规方法难以重建。因此，在本研究中，我们首先结合了医学影像学分析、计算机软件模拟和重建（如MIMICS软件和西门子NX软件）及实际手术经验对缺损体积、假体重建稳定性和假体安装精度进行预测和评估，Harris髋关节评分被用来评估肢体功能。我们的结果表明3D打印假体可以精准重建骨缺损，并获得良好的假体稳定性，并且Harris髋关节评分显示3位患者肢体功能得到较好的恢复。总而言之，3D打印技术在人工髋关节翻修术中应对复杂且程度较为严重的骨缺损具有非常好的治疗效果，最终患者获得满意的预后。

关键词： 3D打印     髋关节翻修     复杂严重髋臼骨缺损     精准重建    

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标题 作者 时间 类型 操作

of CdMoO micron polyhedron with Pt nanoparticle and their enhanced photocatalytic performance in N fixation

期刊论文

Carbon dioxide fixation by

Xuan JIA, Hai YAN, Zijing WANG, Huanju HE, Qianqian XU, Haiou WANG, Chunhua YIN, Liqin LIU

期刊论文

Cu-doped Bi/Bi2WO6 catalysts for efficient N2 fixation by photocatalysis

期刊论文

INTERCROPPING TEA PLANTATIONS WITH SOYBEAN AND RAPESEED ENHANCES NITROGEN FIXATION THROUGH SHIFTS IN

期刊论文

A mini review on chemical fixation of CO 2 : Absorption and catalytic conversion into cyclic carbonates

Weili DAI, Chaktong AU, Shenglian LUO, Shuangfeng YIN,

期刊论文

Effect of surgical factors on the augmentation of cement-injectable cannulated pedicle screw fixation

Haolin Sun, Chun Liu, Shunlun Chen, Yanjie Bai, Huilin Yang, Chunde Li, Lei Yang

期刊论文

Strategies for improving fertilizer phosphorus use efficiency in Chinese cropping systems

Gu FENG, Jingping GAI, Xionghan FENG, Haigang LI, Lin ZHANG, Keke YI, Jialong LV, Yiyong ZHU, Li TANG, Yilin LI

期刊论文

首座大型生物除铁除锰水厂的实践

李冬,杨宏,张杰

期刊论文

Cyanobacterial photo-driven mixotrophic metabolism and its advantages for biosynthesis

Ni Wan,Mary Abernathy,Joseph Kuo-Hsiang Tang,Yinjie J. Tang,Le You

期刊论文

城市地下基础设施低碳发展策略研究

王国盛,季港澳,路德春,杜修力

期刊论文

Heterologous expression of

Di Li,Swati Yewalkar,Xiaotao Bi,Sheldon Duff,Dusko Posarac,Heli Wang,Layne A. Woodfin,Jan-Hendrik Hehemann,Sheila C. Potter,Francis E. Nano

期刊论文

钱春香：微生物固碳矿化与建材封存利用（2021年5月21日）

2021年11月26日

会议视频

3D打印髋关节假体为复杂髋臼骨缺损翻修全髋关节置换术提供精准重建、稳定固定和功能恢复

郝永强, 王磊, 姜闻博, 武文, 艾松涛, 沈路, 赵双, 戴尅戎

期刊论文