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Transactions of Tianjin University 2024年第5期30卷 436-447页

作者： zhengyang ni Huitao Yu Haoran Wang Mengmeng Qin Feng Li Hao Song Xiangyu Chen Yiyu Feng Wei Feng School of Material Science and Engineering Tianjin University School of Chemical Engineering and Technology Tianjin University Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences

The presence of iron（Fe） has been found to favor power generation in microbial fuel cells（MFCs）. To achieve long-term power production in MFCs, it is crucial to effectively tailor the release of Fe ions over extended operating periods. In this study, we developed a composite anode（A/IF） by coating iron foam with cellulose-based aerogel. The concentration of Fe ions in the anode solution of A/IF anode reaches 0.280 μg/mL(Fe2+vs. Fe3+= 61%:39%) after 720 h of aseptic primary cell operation. This value was significantly higher than that(0.198 μg/mL, Fe2+vs. Fe3+= 92%:8%) on uncoated iron foam（IF）, indicating a continuous release of Fe ions over long-term operation. Notably, the resulting MFCs hybrid cell exhibited a 23% reduction in Fe ion concentration（compared to a 47% reduction for the IF anode） during the sixth testing cycle（600–720 h）. It achieved a high-power density of 301 ± 55 mW/m2at 720 h, which was 2.62 times higher than that of the IF anode during the same period. Furthermore, a sedimentary microbial fuel cell（SMFCs） was constructed in a marine environment, and the A/IF anode demonstrated a power density of 103 ± 3 mW/m2at 3240 h, representing a 75% improvement over the IF anode. These findings elucidate the significant enhancement in long-term power production performance of MFCs achieved through effective tailoring of Fe ions release during operation.

关键词： Coating Fe ions Long-term Microbial fuel cells Tailor release

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中医治疗慢性结肠炎的临床疗效

大医生 2018年第11期3卷 75-76页

作者：倪正扬江苏省张家港市第六(锦丰)人民医院江苏张家港215625

目的观察中医治疗慢性结肠炎的临床效果。方法选取本院收治的96例慢性结肠炎患者作为对象,随机分为对照组(常规治疗)和观察组(中医治疗),各48例。比较两组临床治疗有效率、治疗时间、复发率以及患者生活质量。结果观察组治疗有效率显著... 详细信息

目的观察中医治疗慢性结肠炎的临床效果。方法选取本院收治的96例慢性结肠炎患者作为对象,随机分为对照组(常规治疗)和观察组(中医治疗),各48例。比较两组临床治疗有效率、治疗时间、复发率以及患者生活质量。结果观察组治疗有效率显著高于对照组(P <0.05);观察组治疗时间显著长于对照组;观察组复发率、生活质量评分均显著优于对照组(P <0.05)。结论中医治疗慢性结肠炎的治疗效果、复发率和患者生活质量均优于常规治疗,但起效时间相对较慢,后续工作中可结合实际情况进行治疗方案选择。

关键词：慢性结肠炎中医抗生素

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高强度聚焦超声螺旋扫描形成的组织损伤研究

声学学报 2016年第5期41卷 724-730页

作者：钱魁倪正阳李成海杨慧宇陆沁宇章东近代声学教育部重点实验室南京大学声学研究所南京210093 复旦大学信息科学与工程学院上海200433

为满足高强度聚焦超声(HIFU)治疗对组织损伤均匀性和高效性的需求,理论及实验研究了连续扫描模式下HIFU沿螺旋扫描路径形成的组织损伤。基于Khokhlov-Zabolotskaya-Kuznetsov方程和生物传热方程建立了声热耦合模型,数值模拟了螺旋路径... 详细信息

为满足高强度聚焦超声(HIFU)治疗对组织损伤均匀性和高效性的需求,理论及实验研究了连续扫描模式下HIFU沿螺旋扫描路径形成的组织损伤。基于Khokhlov-Zabolotskaya-Kuznetsov方程和生物传热方程建立了声热耦合模型,数值模拟了螺旋路径栅格距离为3 mm和4 mm时不同扫描速度下HIFU辐照体模的温度场和组织损伤分布,并采用凝胶体模进行了实验验证。结果表明,采用连续螺旋模式可以使热扩散均匀化,产生分布均匀的热损伤;选择适当的栅格距离和扫描速度,发挥螺旋路径内外圈热扩散的相互影响,可以产生大范围的整体性的热损伤,同时提高治疗效率。本文工作对优化HIFU治疗效果具有指导意义。

关键词：高强度聚焦超声组织损伤螺旋扫描生物传热方程扫描路径 HIFU 治疗效果扫描速度

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过滤式碳纤维电极消毒效果比较与机理研究

环境科学学报 2018年第3期38卷 940-946页

作者：辛蕾霍正洋倪欣业熊德琪胡洪营大连海事大学环境科学与工程学院大连116026 清华大学环境学院环境模拟与污染控制国家重点联合实验室国家环境保护环境微生物利用与安全控制重点实验室北京100084 清华-伯克利深圳学院环境与新能源技术工程实验室深圳518055

过滤式电极消毒作为一种安全、高效的新型消毒技术备受关注,然而目前使用的电极材料比较单一,且稳定性和高效性难以兼备,制约了该技术的设备化发展.本文采用过滤式消毒方式,考察了几种高孔隙率的导电碳纤维毡的消毒效果.结果表明,碳纤... 详细信息

过滤式电极消毒作为一种安全、高效的新型消毒技术备受关注,然而目前使用的电极材料比较单一,且稳定性和高效性难以兼备,制约了该技术的设备化发展.本文采用过滤式消毒方式,考察了几种高孔隙率的导电碳纤维毡的消毒效果.结果表明,碳纤维毡电极具有优异的消毒能力,活性碳纤维电极可在几伏的电压下使细菌死亡,与传统电化学消毒相比,电压降低了1~2个数量级.其中A-PCF(聚丙烯腈基活性碳纤维)电极在外接电压2 V,水力停留时间2 s时即可对大肠杆菌菌液实现>6.5log的去除.当外接电压≤2 V时,流出物中未检测到氯,pH保持不变,排除了电化学产物的影响.A-PCF可作为过滤式电极消毒的优选电极材料.

关键词：水消毒多孔电极活性碳纤维纳米结构微电场

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基于辨病辨体探讨肺结节的中医治疗

辽宁中医杂志 2024年第3期51卷 60-62页

作者：倪园园王至婉赵正阳河南中医药大学河南郑州450046 河南中医药大学第一附属医院河南郑州450000

肺结节因其检出率上升且有癌变风险而日益引起医患的重视。患者早期多无明显症状,通过辨证论治不足以获取足够的信息指导治疗,既不利于及早干预肺结节,又不利于患者改善预后、缓解焦虑情绪。辨病论治以肺结节发生、发展的自然规律为基础... 详细信息

肺结节因其检出率上升且有癌变风险而日益引起医患的重视。患者早期多无明显症状,通过辨证论治不足以获取足够的信息指导治疗,既不利于及早干预肺结节,又不利于患者改善预后、缓解焦虑情绪。辨病论治以肺结节发生、发展的自然规律为基础,针对病因采取最佳治疗原则;辨体论治则针对患者的体质差异而调整体质,辨病论治与辨体论治相结合可获得更多的诊疗信息,予患者及时有效的诊治,以延缓或阻碍肺结节发展并降低其癌变风险,丰富中医诊疗肺结节的思路。

关键词：肺结节辨病论治辨体论治中医治疗

Structural transition,electric transport,and electronic structures in the compressed trilayer nickelate La_(4)ni_(3)O_(10)

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Science China(Physics,Mechanics & Astronomy) 2024年第11期67卷 9-15页

作者： Jingyuan Li Cui-Qun Chen Chaoxin Huang Yifeng Han Mengwu Huo Xing Huang Peiyue Ma zhengyang Qiu Junfeng Chen Xunwu Hu Lan Chen Tao Xie Bing Shen Hualei Sun Dao-Xin Yao Meng Wang Center for Neutron Science and Technology Guangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesSchool of PhysicsSun Yat-sen UniversityGuangzhou 510275China Center for Materials of the Universe School of Molecular SciencesArizona State UniversityTempe 85287USA School of Sciences Sun Yat-sen UniversityShenzhen 518107China

Atomic structure and electronic band structure are fundamental properties for understanding the mechanism of superconductivity. Motivated by the discovery of pressure-induced high-temperature superconductivity at 80 K in the bilayer Ruddlesden-Popper nickelate La_(3)ni_(2)O_(7), the atomic structure and electronic band structure of the trilayer nickelate La_(4)ni_(3)O_(10) under pressure up to 44.3 GPa are investigated. A structural transition from the monoclinic P2_(1)/a space group to the tetragonal I4/mmm around 12.6-13.4 GPa is identified, accompanied by a drop of resistance below 7 K. Density functional theory calculations suggest that the bonding state of ni 3d_(z^(2)) orbital rises and crosses the Fermi level at high pressures, which may give rise to possible superconductivity observed in resistance under pressure in La_(4)ni_(3)O_(10). The trilayer nickelate La_(4)ni_(3)O_(10) shows some similarities with the bilayer La_(3)ni_(2)O_(7) and has unique properties, providing a new platform to investigate the underlying mechanism of superconductivity in nickelates.

关键词： La_(4)ni_(3)O_(10) high pressure synchrotron X-ray diffraction structural transition DFT calculations

Surface-improvement mechanism of hybrid electrochemical discharge process using variable-amplitude pulses

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Chinese Journal of Aeronautics 2020年第10期33卷 2782-2793页

作者： Yan ZHANG zhengyang XU Yu WANG Qin ni Xiang LING School of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211800China College of Mechanical and Electrical Engineering Nanjing University of Aeronautics&AstronauticsNanjing 210016China AECC Sichuan Gas Turbine Research Establishment Chengdu 610500China

Superalloys are commonly used in aircraft manufacturing;however,the requirements for high surface quality and machining accuracy make them difficult to *** this study,a hybrid electrochemical discharge process using variable-amplitude pulses is proposed to achieve this *** this method,electrochemical machining(ECM)and electrical discharge machining(EDM)are unified into a single process using a sequence of variable-amplitude pulses such that the machining process realizes both good surface finish and high machining ***,the machining mechanism of the hybrid electrochemical discharge process using variable-amplitude pulses is *** mechanism is investigated by observations of machining waveforms and machined *** is found that,with a high-frequency transformation between high-and low-voltage waveforms within a voltage cycle,the machining mechanism is frequently transformed from EDM to pure *** critical discharge voltage is 40 *** pulse voltages greater than 40 V are applied,the machining accuracy is good;however,the surface has defects such as numerous discharge *** machining accuracy is maintained when high-voltage pulses are replaced by low-voltage pulses to enhance electrochemical *** results indicate that the proposed hybrid electrochemical discharge process using variable-amplitude pulses can yield high-quality surfaces with high machining accuracy.

关键词： Electrical discharge machining Electrochemical machining Hybrid machining Superalloy Variable-amplitude pulse

Experimental Investigation of Crystal Structure of Zr 0.98 niGe 2.94 and Phase Equilibria in Zr-ni-Ge System

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Journal of Harbin Institute of Technology(New Series) 2023年第4期30卷 1-14页

作者： zhengyang Wang Weijing Zeng Hong Zhang Huashan Liu School of Materials Science and Engineering Central South UniversityChangsha 410083China Key Lab of Non-Ferrous Metal Materials Science and Engineering Ministry of EducationCentral South UniversityChangsha 410083China

Based on the results of electron probe microanalysis(EPMA)and X-ray diffraction(XRD),the isothermal sections of Zr-ni-Ge ternary system at 973 K and 1173 K were constructed through alloy sampling *** is worth noting that the crystallographic information of the formerly reportedτ2(Zr_(0.98)niGe_(2.94))was determined,which belongs to the space group Pbcm(No.57).Besides the formerly reported ternary compounds,τ1(Zr_(6)ni_(16)Ge_(7)),τ_(2)(Zr_(0.98)niGe_(2.94)),τ_(3)(Zr_(3)ni_(4)Ge_(4)),τ_(4)(ZrniGe)andτ_(5)(Zr_(2)ni_(0.54)Ge_(0.46)),a new ternary phase namedτ_(6)with the composition of Zr_(39)ni_(18)Ge_(43)was primarily detected in this *** addition,an invariant reaction ni_(5)Ge_(3)+τ_(4)τ_(1)+τ_(3)between 973 K and 1173 K was deduced.

关键词： Zr-ni-Ge system phase diagram isothermal section crystal structure Zr_(0.98)niGe_(2.94)

长江下游干流沉积物重金属特征及生态风险评价

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中国地质 2024年第1期51卷 276-289页

作者：金阳姜月华周权平王晓龙张鸿梅世嘉陈孜杨海吕劲松侯莉莉齐秋菊贾正阳杨辉中国地质科学院北京100037 中国地质调查局南京地质调查中心江苏南京210016 自然资源部流域地质过程重点实验室江苏南京210016 中国科学院南京地理与湖泊研究所江苏南京210008

【研究目的】长江下游干流沿岸分布众多取水口,为保障用水安全和生态环境健康,亟需了解近岸沉积物中重金属相关现状。【研究方法】调查过程中自上而下分左右岸共采集沉积物样品85组,利用描述统计分析重金属含量特征,综合相关性分析和主... 详细信息

【研究目的】长江下游干流沿岸分布众多取水口,为保障用水安全和生态环境健康,亟需了解近岸沉积物中重金属相关现状。【研究方法】调查过程中自上而下分左右岸共采集沉积物样品85组,利用描述统计分析重金属含量特征,综合相关性分析和主成分分析探讨重金属来源,采用地累积指数法、污染负荷法分析重金属污染程度,并评估其潜在生态风险。【研究结果】平均含量由高至低为Zn>Cr>Cu>ni>Pb>As>Cd;上游至下游,Cu、Zn、Cr、ni呈小幅波动增加趋势,As、Pb呈小幅波动下降趋势,Cd呈较大波动下降趋势;Cd的污染程度最重,主要来源于农业生产等人类活动,1~4级污染分别占比1.18%、1.18%、18.82%和34.12%,Cr和ni为无污染,主要是工业生产源和地球化学自然源;中等污染程度(1≤PLI_(point)<2)的样点占比34.18%,潜在生态风险指数(RI)为19.48~388.62,轻微潜在生态风险、中等潜在生态风险、强潜在生态风险和极强潜在生态风险占比分别为38.82%、42.35%、17.65%和1.18%。【结论】长江下游干流沉积物中重金属含量较低,流域整体处于轻微—中等风险的无污染状态(PLI_(area)<1),右岸重金属平均含量、污染程度和潜在生态风险均普遍高于左岸。

关键词：重金属来源污染程度生态风险水文地质调查工程长江下游

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两级车辆路径问题的多起始点变邻域下降算法

同济大学学报（自然科学版） 2014年第10期42卷 1530-1535页

作者：曾正洋许维胜徐志宇倪嘉呈同济大学电子与信息工程学院上海201804

两级车辆路径问题是指货物必须首先由中心仓库配送至中转站(第一级),再转运至需求点(第二级)的一种新型车辆路径问题.针对该问题特性,提出一种多起始点变邻域下降求解算法.首先由改进的Split算法循环分割由所有需求点组成的随机排列,直... 详细信息

两级车辆路径问题是指货物必须首先由中心仓库配送至中转站(第一级),再转运至需求点(第二级)的一种新型车辆路径问题.针对该问题特性,提出一种多起始点变邻域下降求解算法.首先由改进的Split算法循环分割由所有需求点组成的随机排列,直至出现可行的第二级配送方案,然后求解第一级问题,获得完整的初始可行解,再通过变邻域下降算法进一步改进.当变邻域下降算法无法改进时,采用多起始点技术重复上述过程,直至算法终止.实验结果表明,所提出的算法易于实现,且性能优于已有最好的两种启发式算法.

关键词：两级车辆路径问题多起始点方法变邻域下降算法分割算法