资源类型

期刊论文 858

会议视频 17

年份

2023 44

2022 55

2021 55

2020 64

2019 59

2018 42

2017 36

2016 28

2015 49

2014 47

2013 35

2012 38

2011 41

2010 44

2009 38

2008 31

2007 35

2006 36

2005 19

2004 17

展开 ︾

关键词

能源 7

技术预见 5

有限元法 4

仿真 3

一阶分析法 2

上限法 2

产业成熟度 2

优化设计 2

参数估计 2

可靠性 2

多目标优化 2

悬索桥 2

数学模型 2

数据驱动方法 2

智能制造 2

最小二乘法 2

海上风电场 2

神经网络 2

粗糙集 2

展开 ︾

检索范围：

排序： 展示方式：

Synthesis of novel magneto-hybrid polyoxometalate composite membrane with simultaneous photocatalytic self-cleaning

《化学科学与工程前沿（英文）》 2023年 第17卷 第10期   页码 1450-1459 doi: 10.1007/s11705-023-2310-3

摘要： Membrane technology is ideal for removing aqueous humic acid, but humic acid deposits cause membrane fouling, a significant challenge that limits its application. Herein, this work proposed an alternative approach to the controllably magnetically induced magneto-hybrid polyoxometalate (magneto-HPOM) nanocomposite migration toward the polyethersulfone (PES) membrane surface under a magnetic field to enhance the self-cleaning and antifouling functionalities of the membrane. Before incorporating magneto-HPOM nanocomposite into the PES casting solution, functionalized magnetite nanoparticles (F-MNP) were first coated with HPOM photocatalyst to fabricate a magneto-HPOM-PES membrane. It was shown that the apparent impacts of this novel magneto-HPOM-PES membrane on the hydrophilic behavior and photocatalytic properties of the magneto-HPOM nanocomposite improve the hydrophilicity, separation performance, antifouling and self-cleaning properties of the membrane compared with neat PES membrane. Furthermore, after exposure to ultraviolet light, the magneto-HPOM-PES membrane can be recovered after three cycles with a flux recovery ratio of 107.95%, 100.06%, and 95.56%, which is attributed to the temporal super hydrophilicity effect. Meanwhile, the magneto-HPOM-PES membrane could efficiently maintain 100% humic acid rejection for the first and second cycles and 99.81% for the third cycle. This study revealed a novel approach to fabricating membranes with high antifouling and self-cleaning properties for water treatment.

关键词： magneto-hybrid polyoxometalate nanocomposite     composite membrane     antifouling     self-cleaning     magnetic and photocatalytic responsiveness    

HTML PDF 收藏

Formation of disinfection by-products during sodium hypochlorite cleaning of fouled membranes from membrane

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-021-1389-3

摘要：

•HAAs was dominant among the DBPs of interest.

关键词： MBR     Biofouling     EPS     Chemical cleaning     DBPs     CLSM    

HTML PDF 收藏

Evaluation of precipitation behavior of zirconium molybdate hydrate

Liang ZHANG, Masayuki TAKEUCHI, Tsutomu KOIZUMI, Izumi HIRASAWA

《化学科学与工程前沿（英文）》 2013年 第7卷 第1期   页码 65-71 doi: 10.1007/s11705-013-1314-9

摘要： In the dissolution step of spent nuclear fuel, there is a world-concern problem that zirconium molybdate hydrate precipitates as a byproduct, and accumulates in some reprocessing equipments. In order to prevent this accumulation, we have developed a new method based on the controlled reaction crystallization of zirconium molybdate hydrate (ZMH) in the reprocessing solution, followed by solid liquid separation. In order to measure the particle size of ZMH, batch crystallization experiments were conducted by varying nitric acid concentration and operating temperature. In result, almost all particle sizes scatter around 1 μm on average, despite the higher concentration of nitric aid and operating temperature, and then small particles grow up as an aggregate sticking to the crystallizer. Moreover, polymorph and color changing were observed by varying the concentration of nitric acid and reaction time. These results suggest that crystal color and adhesiveness are closely related to the particle size of ZMH. And the control of nitric acid concentration and small particle growth would be the useful technique to prevent the ZMH sticking.

关键词： spent nuclear fuel     zirconium molybdate hydrate     cleaning method     accumulation    

HTML PDF 收藏

一种新型的多功能油——清洁润滑防护武器三用油

冯薇荪,汪孟言

《中国工程科学》 2000年 第2卷 第4期   页码 53-58

摘要：

武器三用油是一种不同于传统润滑油的油品。它不仅功能多，而且性能优异，可供陆、海、空三军在各种不同气候条件下使用；也可以广泛用于车辆、船舶、工厂、建筑物等民用设施。由于一种油品同时要具备多种功能，因此必需精心设计配方，考虑不同基础油及各种添加剂的配伍性，扬长避短，发挥增效作用，避免不利因素。在三用油研制过程中，考察了各种影响因素，将矛盾的各个方面很好地统一在一个油品中，获得了能满足各项要求的清洁、润滑、防护武器三用油。

关键词： 武器三用油     基础油     添加剂     清洁     润滑     防护    

HTML PDF 收藏

A thermodynamic study of the removal of HCl and H

Joseph LEE, Bo FENG

《化学科学与工程前沿（英文）》 2012年 第6卷 第1期   页码 67-83 doi: 10.1007/s11705-011-1162-4

摘要： Advanced integrated-gasification combined-cycle (IGCC) and integrated-gasification fuel cell (IFGC) systems require high-temperature sorbents that are capable of removing hydrogen chloride and hydrogen sulfide from coal derived gases to very low levels. HCl and H S are highly reactive, corrosive, and toxic gases that must be removed to meet stringent environmental regulations, to protect power generation equipment and to control the emissions of contaminants. The thermodynamic behavior of 13 sorbents for the removal of HCl and H S under various conditions including: initial toxic gas concentration (1–10000 ppm), operating pressure (0.1–11 Mpa), temperature (300 K–1500 K), and the presence of H O were investigated. The correlation between HCl and H S was also examined. Thermodynamic calculations were carried out for the reactions of the 13 sorbents using a FactSage 5.2 software package based on free energy minimization. The sorbents, Na CO , NaHCO , K CO , and CaO are capable of completely removing chlorine at high temperatures (up to ~1240 K) and at high pressures. Water vapor did not have any significant effects on the dechlorination capability of the sorbents. Nine of the sorbents namely; Cu O, Na CO , NaHCO , K CO , CaO, ZnO, MnO, FeO, and PbO, were determined to have great potential as desulfurization sorbents. Cu O and ZnO had the best performance in terms of the optimum operating temperature. The addition of water vapor to the reactant gas produces a slightly detrimental effect on most of the sorbents, but FeO exhibited the worst performance with a reduction in the maximum operating temperature of about 428 K. The dechlorination performance of the alkali sorbents was not affected by the presence of H S in the reactions. However, the desulfurization capability of some sorbents was greatly affected by the presence of HCl. Particularly, the performance of Cu O was significantly reduced when HCl was present, but the performance of FeO improved remarkably. The thermodynamic results gathered are valuable for the developments of better sorbents.

关键词： syngas cleaning     sorbent     desulfurization     dechlorination    

HTML PDF 收藏

基于改进YOLOv4的水下垃圾清理机器人视觉检测算法 Research Article

田满军1,2,李霞丽2,孔诗涵3,吴立成2,喻俊志3,4

《信息与电子工程前沿（英文）》 2022年 第23卷 第8期   页码 1217-1228 doi: 10.1631/FITEE.2100473

摘要： 为解决水环境污染问题，依托基于视觉的水下垃圾自主清理机器人，提出一种基于改进YOLOv4的垃圾检测方法，可实现高速、高精度的目标检测。具体而言，选择YOLOv4算法作为执行目标检测的基本神经网络框架。为进一步提高检测精度，将传统YOLOv4改进为四尺度检测算法；为提高检测速度，对新模型进行模型剪枝操作。同时，将所提方法应用于水下机器人，实现了自主垃圾收集作业。检测速度可达66.67帧/秒，平均准确率可达95.099%；实验结果表明，改进后的YOLOv4算法在检测速度和精度方面均表现优秀。

关键词： 目标检测；水环境；垃圾清理机器人；改进YOLOv4    

HTML PDF 收藏

Using loose nanofiltration membrane for lake water treatment: A pilot study

《环境科学与工程前沿（英文）》 2021年 第15卷 第4期 doi: 10.1007/s11783-020-1362-6

摘要：

• A pilot study was conducted for drinking water treatment using loose NF membranes.

关键词： Nanofiltration     Drinking water     Membrane fouling     Aluminum carryover     Chemical cleaning    

HTML PDF 收藏

铸钢粗晶的成因及消除方法的研究

邹安全,邓沛然

《中国工程科学》 2005年 第7卷 第4期   页码 79-82

摘要：

通过对ZG32Cr06铸钢粗晶成因的分析及消除粗晶的工艺性能试验，探讨了粗晶导致铸件断裂的机理。试验证明，由于浇铸温度过高，水爆清砂时开箱过早而产生的粗晶可以用热处理方法消除，同时提出了铸件在浇铸时防止粗晶的措施。

关键词： 铸钢     粗晶     水爆清砂     消除方法    

HTML PDF 收藏

nanofibre interlayer supported forward osmosis composite membranes and its evaluation in fouling study with cleaning

《环境科学与工程前沿（英文）》 2022年 第16卷 第9期 doi: 10.1007/s11783-022-1550-7

摘要：

• A fine fibre (40–60 nm diameter) interlayer (~1 µm thickness) was electrospun.

关键词： Forward osmosis     Electro-spinning     Interfacial polymerisation     Fouling     Polyvinylidene fluoride    

HTML PDF 收藏

Cleaning the energy sources for water heating among Nanjing households: barriers and opportunities for

Lingyun ZHU,Beibei LIU,Jun BI

《环境科学与工程前沿（英文）》 2014年 第8卷 第5期   页码 757-766 doi: 10.1007/s11783-013-0603-3

摘要： Energy for water heating accounts for an increasing part in residential energy demand in China. An extensive survey was conducted to analyze the determinants of household energy choices for water heaters among residents in Nanjing, China. Two sets of variables were examined as potential influences: building features and household socio-economic characteristics. Results suggest that building features such as gas availability and building structures, and household characteristics such as household head’s education degree and energy-conserving sense are crucial determinants in choosing natural gas as water heater energy. Installation permission for solar water heater, building stories, and residential location serve as determining factors in choosing solar water heaters. Based on these, barriers and opportunities are discussed for transitions toward cleaner water heating energies, and suggestions are given for local governments to promote cleaner energy replacement in China.

关键词： residential energy demand     water heating     multinomial logit model    

HTML PDF 收藏

Performance of landfill leachate treatment system with disc-tube reverse osmosis units

WANG Baozhen, LIU Shuo, LIU Yanping, LI Xiujin

《环境科学与工程前沿（英文）》 2008年 第2卷 第1期   页码 24-31 doi: 10.1007/s11783-008-0024-x

摘要： Reverse osmosis system with the disc-tube module (DT-RO) was applied to treat landfill leachate on full scale at the Changshengqiao Sanitary Landfill, Chongqing City, China. In the first six-mouth operation phase, the treatment performance of DT-RO system had been excellent and stable. The removal rate of chemical oxygen demand (COD), total organic carbon (TOC), electrical conductivity (EC), and ammonia nitrogen (NH-N) reached 99.2–99.7%, 99.2%, 99.6%, and over 98%, respectively. The rejection of Ca, Ba, and Mg was over 99.9%, respectively. Suspended solid (SS) was not detected in product water. Effective methods had been adopted to control membrane fouling, of which chemical cleaning is of utmost importance to guarantee the long smooth operation of the DT-RO system. The DT-RO system is cleaned in turns with Cleaner A and Cleaner C. At present, the 1st stage cleaning cycle by Cleaner A and Cleaner C is conducted every 100 and 500 h, respectively, depending on raw the water quality.

关键词： chemical cleaning     product     organic     nitrogen     Effective    

HTML PDF 收藏

集成膜过程

高从堦,俞三传,金可勇

《中国工程科学》 2000年 第2卷 第7期   页码 43-46

摘要：

文章扼要阐述了部分集成膜过程在水净化、废液处理和清洁生产中的应用，如纯水和超纯水制备、饮用水净化、污水处理和回用、有机废水处理、乳清综合利用和海水淡化等，分析了集成膜过程的优势和广阔的应用前景。

关键词： 膜分离     集成膜过程     水净化     脱盐     清洁生产    

HTML PDF 收藏

Application of Ice Pigging in a Drinking Water Distribution System: Impacts on Pipes and Bulk Water Quality

Yujing Huang,Zhiwei Chen,Guilin He,Yu Shao,Shuang Song,Feilong Dong,Tuqiao Zhang,

《工程（英文）》 doi: 10.1016/j.eng.2023.09.016

摘要： Ice pigging is an emerging technique for pipe cleaning in drinking water distribution systems. However, substantial confusion and controversy exist on the potential impacts of ice pigging on bulk water quality. This study monitored the microstructural features and composition of sediments and microbial community structures in bulk water in eight multimaterial Chinese networks. Chloride concentration analysis demonstrated that separate cleaning of pipes with different materials in complex networks could mitigate the risk of losing ice pigs and degrading water quality. The microstructural and trace element characterization results showed that ice pigs would scarcely disturb the inner surfaces of long-used pipes. The bacterial richness and diversity of bulk water decreased significantly after ice pigging. Furthermore, correlations were established between pipe service age, temperature, total iron and chloride concentrations, and the 15 most abundant taxa in bulk water, which could be used to guide practical ice pigging operations.

关键词： Ice pigging     Pipe cleaning     Drinking water distribution system     Bacterial community     Sediments    

HTML PDF 收藏

Experimental investigation of multiphase flow behavior in drilling annuli using high speed visualization technique

Alap Ali ZAHID, Syed Raza ur REHMAN, Anwarul HASAN, S. RUSHD, Mohammad Azizur RAHMAN

《能源前沿（英文）》 2020年 第14卷 第3期   页码 635-643 doi: 10.1007/s11708-018-0582-y

摘要： Imaging with high definition video camera is an important technique to visualize the drilling conditions and to study the physics of complex multiphase flow associated with the hole cleaning process. The main advantage of visualizing multiphase flow in a drilling annulus is that the viewer can easily distinguish fluid phases, flow patterns and thicknesses of cutting beds. In this paper the hole cleaning process which involves the transportation of cuttings through a horizontal annulus was studied. The two-phase (solid-liquid) and the three-phase (solid-liquid-gas) flow conditions involved in this kind of annular transportation were experimentally simulated and images were taken using a high definition camera. Analyzing the captured images, a number of important parameters like velocities of different phases, heights of solid beds and sizes of gas bubbles were determined. Two different techniques based on an image analysis software and MATLAB coding were used for the determinations. The results were compared to validate the image analyzing methodology. The visualization technique developed in this paper has a direct application in investigating the critical conditions required for efficient hole cleaning as well as in optimizing the mud program during both planning and operational phases of drilling. Particularly, it would be useful in predicting the cuttings transport performance, estimating solid bed height, gas bubble size, and mean velocities of bubbles/particles.

关键词： visualization     horizontal annulus     hole cleaning     multiphase flow     image analysis     flow regime    

HTML PDF 收藏

非并网风电应用中金属材料清洗与防护技术

吴 昊,邹宜哲,白 珂

《中国工程科学》 2015年 第17卷 第3期   页码 41-44

摘要：

为了保证大规模非并网风电装备，特别是金属构件的正常使用，需要对其进行必要的清洗及预防腐处理等前处理，为后续涂层等最终防护工序打下良好材料基础。本文针对金属部件的清洗与预防腐处理技术进行了研究，研发出金属清洗与防护产品，并进行了应用研究。

关键词： 大规模非并网风电；金属；清洗；预防腐；前处理    

HTML PDF 收藏

标题 作者 时间 类型 操作

Synthesis of novel magneto-hybrid polyoxometalate composite membrane with simultaneous photocatalytic self-cleaning

期刊论文

Formation of disinfection by-products during sodium hypochlorite cleaning of fouled membranes from membrane

期刊论文

Evaluation of precipitation behavior of zirconium molybdate hydrate

Liang ZHANG, Masayuki TAKEUCHI, Tsutomu KOIZUMI, Izumi HIRASAWA

期刊论文

一种新型的多功能油——清洁润滑防护武器三用油

冯薇荪,汪孟言

期刊论文

A thermodynamic study of the removal of HCl and H

Joseph LEE, Bo FENG

期刊论文

基于改进YOLOv4的水下垃圾清理机器人视觉检测算法

田满军1,2,李霞丽2,孔诗涵3,吴立成2,喻俊志3,4

期刊论文

Using loose nanofiltration membrane for lake water treatment: A pilot study

期刊论文

铸钢粗晶的成因及消除方法的研究

邹安全,邓沛然

期刊论文

nanofibre interlayer supported forward osmosis composite membranes and its evaluation in fouling study with cleaning

期刊论文

Cleaning the energy sources for water heating among Nanjing households: barriers and opportunities for

Lingyun ZHU,Beibei LIU,Jun BI

期刊论文

Performance of landfill leachate treatment system with disc-tube reverse osmosis units

WANG Baozhen, LIU Shuo, LIU Yanping, LI Xiujin

期刊论文

集成膜过程

高从堦,俞三传,金可勇

期刊论文

Application of Ice Pigging in a Drinking Water Distribution System: Impacts on Pipes and Bulk Water Quality

Yujing Huang,Zhiwei Chen,Guilin He,Yu Shao,Shuang Song,Feilong Dong,Tuqiao Zhang,

期刊论文

Experimental investigation of multiphase flow behavior in drilling annuli using high speed visualization technique

Alap Ali ZAHID, Syed Raza ur REHMAN, Anwarul HASAN, S. RUSHD, Mohammad Azizur RAHMAN

期刊论文

非并网风电应用中金属材料清洗与防护技术

吴 昊,邹宜哲,白 珂

期刊论文