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Stainless steel cloth modified by carbon nanoparticles of Chinese ink as scalable and high-performance anode in microbial fuel cell

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Chinese Chemical Letters 2021年第8期32卷 2499-2502页

作者： haoliang Wu hao tan Luye Chen Bin Yang Yang Hou Lecheng Lei Zhongjian Li College of Chemical and Biological Engineering Key Laboratory of Biomass Chemical Engineering of Ministry of EducationZhejiang UniversityHangzhou 310027China Institute of Zhejiang University-Quzhou Quzhou 32400China

Microbial fuel cells(MFCs) have various potential ***,anode is a main bottleneck that limits electricity production performance of ***,we developed a novel anode based on a stainless steel cloth(SC) modified with carbon nanoparticles of Chinese ink(Cl) using polypyrrole(PPy)as a building block(PPy/Cl/SC).After modification,PPy/Cl/SC showed a 30% shorten in start-up time(36.4 ± 3.3 h vs.52.3± 1.8 h),33% increase in the maximum current(12.4 ± 1.4 mA vs.9.3± 0.95 mA),and2.3 times higher in the maximum power density of MFC(61.9 mW/m^(2) vs.27.3 mW/m^(2)),compared to Ppy/*** results revealed that carbon nanoparticles were able to cover SC uniformly,owing to excellent dispersibility of carbon nanoparticles in *** attachment of carbon nanoparticles formed a fluffy layer on SC increased the electrochemically-active surface area by 1.9 times to 44.5 cm^(2).This enhanced electron transfer between the electrode and ***,embedding carbon nanoparticles into the PPy layer significantly improved biocompatibility as well as changed functional group contents,which were bene ficial to bacteria adhesion on *** adva ntage of high mechanical strength and good conductivity,a large-size PPy/Cl/SC was successfully prepared(50×60 cm^(2))demonstrating a promising potential in practical *** simple fabrication strategy offers a new idea of developing low cost and scalable electrode materials for high-performance energy harvesting in MFCs.

关键词： Chinese ink Microbial fuel cell Stainless steel Polypyrrole Carbon nanoparticles

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基于光栅光谱合束的蓝光高亮度半导体激光源

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中国激光 2024年第13期51卷 44-50页

作者：郭林辉蒋全伟吴华玲谭昊谢鹏飞傅芸张兰平张永刚高松信武德勇唐淳中国工程物理研究院应用电子学研究所四川绵阳621900 中国工程物理研究院高能激光科学与技术重点实验室四川绵阳621900

高功率高亮度蓝光半导体激光器正迅速发展为一种激光加工光源,其主要用于高反金属焊接、切割和雕刻。目前工业所用的蓝光半导体激光源在加工距离较大的一些工艺中表现出光束质量劣化和功率不足的现象,制约了光源的应用。提出外腔反馈光... 详细信息

高功率高亮度蓝光半导体激光器正迅速发展为一种激光加工光源,其主要用于高反金属焊接、切割和雕刻。目前工业所用的蓝光半导体激光源在加工距离较大的一些工艺中表现出光束质量劣化和功率不足的现象,制约了光源的应用。提出外腔反馈光谱合束技术,该技术以激光自激振荡与外光反馈组合的方式输出合成光束,合成光束功率明显提高,光束质量与单元激光光束质量相当,弥补了工业加工中光束质量劣化和功率不足的缺陷。采用9个蓝光半导体激光单元,结合透射式光栅沿激光快轴方向进行光谱合束,输出功率为25.99 W,电光转换效率为21.67%,横向光束质量因子(M_(x)^(2))和纵向光束质量因子(M_(y)^(2))分别为2.45和14.81,亮度为56.85 MW/(cm^(2)·sr)。

关键词：半导体激光器蓝色激光光谱合束高光束质量高亮度

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A review on photo-thermal catalytic conversion of carbon dioxide

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Green Energy & Environment 2017年第3期2卷 204-217页

作者： Ee Teng Kho Tze hao tan Emma Lovell Roong Jien Wong Jason Scott Rose Amal Particles and Catalysis Research Group School of Chemical EngineeringThe University of New South Wales

The conversion of carbon dioxide into value-added products is of great industrial and environmental interest. However, as carbon dioxide is relatively stable, the input energy required for this conversion is a significant limiting factor in the system's performance. By utilising energy from the sun, through a range of key routes, this limitation can be overcome. In this review, we present a comprehensive and critical overview of the potential routes to harvest the sun's energy, primarily through solar-thermal technologies and plasmonic resonance effects. Focusing on the localised heating approach, this review shortlists and compares viable catalysts for the photo-thermal catalytic conversion of carbon ***, the pathways and potential products of different carbon dioxide conversion routes are outlined with the reverse water gas shift,methanation, and methanol synthesis being of key interest. Finally, the challenges in implementing such systems and the outlook to the future are detailed.

关键词： Carbon dioxide conversion Photo-thermal Plasmonic catalysis Solar thermal

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Ultrahigh-temperature ferromagnetism in MoS_(2) Moirésuperlattice/graphene hybrid heterostructures

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Nano Research 2021年第11期14卷 4182-4187页

作者： Liang Cai Hengli Duan Qinghua Liu Chao Wang hao tan Wei Hu Fengchun Hu Zhihu Sun Wensheng Yan National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei230029China

Realizing high-temperature ferromagnetism in two-dimensional(2D)semiconductor nanosheets is significant for their applications in next-generation magnetic and electronic ***,this goal could be achieved on a MoS_(2) Moirésuperlattice grown on the reduced graphene oxide(RGO)substrate by a hydrothermal *** as-synthesized bilayer MoS_(2) superlattice structure with rotating angle(ϕ=13°±1°)of two hexagonal MoS_(2) lattices,possesses outstanding ferromagnetic property and an ultra-high Curie temperature of 990 *** X-ray absorption near-edge structure and ultraviolet photoelectron spectroscopies combined with density functional theory calculation indicate that the covalent interactions between MoS_(2) Moirésuperlattice and RGO substrate lead to the formation of interfacial Mo-S-C bonds and complete spin polarization of Mo 4d electrons near the Fermi *** design could be generalized and may open up a possibility for tailoring the magnetism of other 2D materials.

关键词： MoS2 moirésuperlattice high-temperature ferromagnetism XAFS hybrid heterostructures 2D nanosheets

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综放工作面停采线位置确定及聚酯纤维柔性网应用

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能源与节能 2024年第1期 310-313页

作者：谭浩魏宝贞顾锋李宁李文林兖矿能源集团股份有限公司东滩煤矿山东邹城273500

为确保3308综放工作面末采期间围岩稳定,借助数值模拟、理论分析的方法确定停采煤柱合理宽度,最终设计停采线煤柱宽度不小于49 m。为降低工人劳动强度,利用金属网配合柔性网护顶的方法,实现了工作面安全快速回撤,提高了护顶效果,降低了... 详细信息

为确保3308综放工作面末采期间围岩稳定,借助数值模拟、理论分析的方法确定停采煤柱合理宽度,最终设计停采线煤柱宽度不小于49 m。为降低工人劳动强度,利用金属网配合柔性网护顶的方法,实现了工作面安全快速回撤,提高了护顶效果,降低了劳动强度,缩短了末采周期,节约了支护成本,对类似条件综放工作面的高效回撤提供了有效借鉴。

关键词：柔性网停采线超前支承压力回撤

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Characterization of the temperature and oxygen concentration field in a decentralized solid‑waste incinerator for villages and towns

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Waste Disposal and Sustainable Energy 2022年第1期4卷 39-47页

作者： Dongsheng Shen Wenxiang Li Foqin Sun Shengqi Qi hao tan Chen Chen Yuyang Long School of Environmental Science and Engineering Instrumental Analysis CenterZhejiang Provincial Key Laboratory of Solid Waste Treatment and RecyclingZhejiang Gongshang UniversityHangzhou 310012China

Decentralized solid-waste incinerators(DSWIs)have certain advantages for waste disposal from villages and ***,the incineration condition is always affected by the distribution of temperature and oxygen concentration,which causes difficulties in operation and *** this study,the temperature and oxygen concentration distribution of DSWI were characterized using different air flow rates and bottom ash *** results showed that the adjustment of air flow has no significant influence on the heating process of the DSWI,while the retention of bottom ash did affect the temperature and oxygen concentration fields in the *** the air flow rate was increased without the retention of bottom ash,99%of the furnace volume temperature was observed between 780℃ and 800℃.However,once the bottom ash was retained,the whole furnace temperature was steadily maintained between 800℃ and 850℃.When the air flow rate was increased without bottom ash,the highest furnace volume percentage of oxygen concentrations higher than 3%maxed out at 11%volume,while it could reach 100%when bottom ash *** distribution of the temperature and oxygen concentration in the DSWI characterized by this research provides strong support for the operation and management of such systems.

关键词： Decentralized solid-waste incinerator Temperature field Oxygen concentration field Bottom ash

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Design optimization and cold RF test of a 2.6-cell cryogenic RF gun

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Nuclear Science and Techniques 2021年第9期32卷 84-93页

作者： Cheng Wang Jian-hao tan Xiao-Xia Huang Yi-Xing Lu Lin Wang Wen-Cheng Fang Zhen-tang Zhao Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Shanghai Synchrotron Radiation Facility Chinese Academy of SciencesShanghai 201204China

To further improve the performance of acceler-ators,the first cryogenic normal-conducting RF gun in China was designed and *** a new and attractive trend,this optimized cryogenic RF gun can generate a low-emittance beam with a short-driven laser pulse because of its promising high gradient on the *** this paper,optimization of the RF design and beam dynamics,including suppression of the peak RF field and elimination of the multipole mode,is *** addi-tion,the emittance growth caused by the alignment devi-ation and RF jitter is *** the gun was manufactured,a cold test was conducted at both room temperature and cryogenic *** room tempera-ture,the field distribution was obtained by the bead pull *** cryogenic conditions,the RF properties,such as the coupling coefficient and quality factor,varied with *** test results agreed with the *** the cryogenic test,vibration measurements were *** vibration isolation,a maximum vibration of 50 lm was *** cold test results are the basis of the following high-power test.

关键词： Photoinjector Cryogenic structure C-band Cold test

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Design,fabrication,and cold test of an S-band high-gradient accelerating structure for compact proton therapy facility

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Nuclear Science and Techniques 2021年第4期32卷 38-48页

作者： Yu Zhang Wen-Cheng Fang Xiao-Xia Huang Jian-hao tan Cheng Wang Chao-Peng Wang Zhen-tang Zhao Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China ShanghaiTech University Shanghai 201210China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201204China

An S-band high-gradient accelerating structure is designed for a proton therapy linear accelerator(linac)to accommodate the new development of compact,singleroom facilities and ultra-high dose rate(FLASH)*** optimize the design,an efficient optimization scheme is applied to improve the simulation *** S-band accelerating structure with 2856 MHz is designed with a low beta of 0.38,which is a difficult structure to achieve for a linac accelerating proton particles from 70 to 250 MeV,as a high gradient up to 50 MV/m is required.A special design involving a dual-feed coupler eliminates the dipole field *** paper presents all the details pertaining to the design,fabrication,and cold test results of the S-band high-gradient accelerating structure.

关键词： S-band High gradient Accelerating structure Compact Single-room facility Dual-feed coupler Cold test

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基于特征粒径理论的镶齿滚刀最优钻压分析

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岩土工程学报 2023年第6期45卷 1222-1230页

作者：谭昊北京中岩大地科技股份有限公司北京100041 煤炭深井建设技术国家工程实验室北京100013

为解决反井钻机钻压与地层快速匹配问题,首先基于岩石破碎能量理论和岩碴Rosin-Rammler分布机理,通过理论分析证明盖克相似说下特征粒径与钻压呈高斯函数关系,邦德裂纹说和黎金格新表面说下特征粒径均与钻压呈二次函数的倒数关系,由此... 详细信息

为解决反井钻机钻压与地层快速匹配问题,首先基于岩石破碎能量理论和岩碴Rosin-Rammler分布机理,通过理论分析证明盖克相似说下特征粒径与钻压呈高斯函数关系,邦德裂纹说和黎金格新表面说下特征粒径均与钻压呈二次函数的倒数关系,由此得到通过岩碴分析镶齿滚刀最优钻压的特征粒径理论。而后通过六排镐形镶齿滚刀的直线破岩试验,验证了特征粒径理论,证明盖克相似说和邦德裂纹说下特征粒径理论在分析六排镐形镶齿滚刀时具有较好的适用性,通过以上两种方法得到的特征粒径最大时的钻压,即为最小比能法得到的最优钻压。为了提高邦德裂纹说下特征粒径理论的拟合精度,也能使用高斯函数进行拟合。最后,将特征粒径理论应用于白鹤滩溜渣井工程,验证其在反井施工现场的适用性。

关键词：镶齿滚刀 Rosin-Rammler 最优钻压特征粒径比能

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121例头颈部丛状神经纤维瘤手术治疗患者的回顾性研究

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中华整形外科杂志 2024年第2期40卷 169-178页

作者：王薇顾熠辉朱倍瑶谭好朱子骋顾斌胡晓洁杨军王智超李青峰上海交通大学医学院附属第九人民医院整复外科上海200011 上海交通大学医学院上海200025

目的:头颈部丛状神经纤维瘤(PNF)的治疗是临床难题,在手术治疗、分类、治疗时机和治疗方法上缺乏共识。通过对头颈部PNF手术治疗患者的临床表现、手术情况、肿瘤复发情况、治疗满意度及生活质量改变的分析,为进一步形成共识提供依据。方... 详细信息

目的:头颈部丛状神经纤维瘤(PNF)的治疗是临床难题,在手术治疗、分类、治疗时机和治疗方法上缺乏共识。通过对头颈部PNF手术治疗患者的临床表现、手术情况、肿瘤复发情况、治疗满意度及生活质量改变的分析,为进一步形成共识提供依据。方法:通过病历查阅及电话随访的方式,回顾性分析2012年5月至2022年7月上海交通大学医学院附属第九人民医院整复外科因头颈部PNF进行手术治疗的Ⅰ型神经纤维瘤病(NF1)患者资料。完整收集、统计分析患者的临床资料,采用电话随访方式对患者和(或)家属的术后即刻满意度、远期手术满意度,以及标准化生活质量问卷HRQol和PlexiQol进行调查。根据治疗前后生活质量改变和远期手术满意度,将患者分为手术获益组及非获益组,使用单因素及多因素logistic回归分析远期手术获益患者的临床特点。结果:有完整记录的头颈部NF1入院手术患者共计512例,随访时筛选病史及影像学明确为NF1相关PNF,并取得有效随访的121例患者纳入研究。男70例,女51例,年龄(25.60±12.85)岁,范围7~63岁,其中≤18岁的患者41例,>18岁的患者80例。瘤体以侵袭性生长为主,62.81%(76/121)患者表现出临床功能障碍。41.32%(50/121)患者接受了多次手术治疗,121例患者总计进行了215次手术。手术目的包括改善外观及功能修复,术后并发症发生率为6.05%(13/215)。末次术后随访时间为(51.41±27.66)个月,42.15%(51/121)患者表示术后瘤体有复发。对术后即刻效果比较满意及非常满意的患者占76.03%(92/121),但在远期随访时满意率降至46.28%(56/121)。≤18岁的患者家属对手术造成的瘢痕不满意比例更高,且有更强的再次手术意愿。瘤体复发与否和手术获益密切相关( OR=2.32, P18岁患者( OR=3.49, P=0.004),并且7~12岁年龄段患者的末次术后复发率最高,达到68.42%(13/19);男性患者的复发概率显著低于女性( OR=0.40, P=0.026)。结论:头颈部PNF患者临床表现复杂,临床诊疗应注重充分的术前评估、积极的多学科诊疗协作和综合应用包括手术及靶向药物的治疗方法,以提高安全性及有效性,减少瘤体复发。

关键词：神经纤维瘤丛状 Ⅰ型神经纤维瘤病头颈部肿瘤肿瘤复发

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