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Bacterial Community and Function of Biological Activated Carbon Filter in Drinking Water Treatment

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Biomedical and Environmental Sciences 2011年第2期24卷 122-131页

作者： ZHANG DuoYing LI WeiGuang ZHANG ShuMei LIU Miao ZHAO XiaoYu ZHANG xiancheng School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 Heilongjiang China National Engineering Research Centre of Urban Water Resources Harbin 150090 Heilongjiang China Institute of Microbiology of Heilongjiang Academy of Sciences Harbin 150010 Heilongjiang China Heilongjiang East University Harbin 150086 Heilongjiang China

Objective It aims to investigate the changes in composition and structure of bacterial communities de-veloping on biological activated carbon （BAC） particles, and the bacterial functions. Method A pilot plant had been in service for 180 days, aiming to develop bacterial communities on acti-vated carbon naturally. After 180 days of operation, the bacterial communities were determined by dena-turing gradient gel electrophoresis （DGGE） analyses of PCR-amplified 16S rRNA genes. The study on community composition and the phylogenetic relationships of the organisms was complemented by a se-quence analysis of cloned PCR products from 16S rRNA genes. Gas chromatorgaphy-mass （GC-MS） mea-surement was used to determine organic chemical composition of inflow and outflow water on the 300th day. TOC and NH 4 ＋ -N were also tested in this experiment. Results It showed that the stable bacterial structure did not develop on BAC particles until the 9th month during running time of the BAC filter. The communities were finally dominated by Pseudomonas sp., Ba-cillus sp., Nitrospira sp., and an uncultured bacterium. Stable bacterial communities played an important role in removal of NH 4 ＋ -N and total organic carbon （TOC）. Results from gas chromatorgaphy-mass （GC-MS） showed that 36 kinds of chemicals in feed water were eliminated, and concentrations of 5 kinds of chemicals decreased. These chemicals served as nutrients for the dominant bacteria. Conclusion The findings from the study suggested that the stability of microbial structure was beneficial for improving NH 4 ＋ -N and TOC removal efficiencies. The dominant bacteria had the advantage of biode-grading a wide range of organic chemicals and NH 4 ＋ -N.

关键词： Biological activated carbon Bacterial community Denaturing gradient gel electrophoresis

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CAPP系统在灌装机制造业的应用与思考

酒．饮料技术装备 2024年第3期 63-67页

作者：康贤成王忠宝顾剑锋南京轻机包装机械有限公司

CAPP系统在装备制造业的应用日趋广泛,其与CAD/PDM/ERP等系统的有效集成,助力制造业高效、快捷的发展。本文结合CAPP系统在灌装机制造领域的应用,分析了CAPP在实际应用中的效果及应用中存在的问题与不足,并对未来趋势进行了思索。

关键词： CAPP系统应用效果发展趋势思索康贤成王忠宝顾剑锋

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On division management for environmental system of China: lessons from European local sustainable development

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Ecological Economy 2006年第2期2卷 190-195页

作者： Bai Yongqing Hao Jingxia Zhu xiancheng Dalian University of Technology Dalian 116023P.R.China Bean of Education the People＇s Government of Dingzhou City Dingzhou 073000 P.R.China

The concept of sustainable development, after being brousht forward, has become a shibboleth in the world, at national and local levels. In Europe, this concept is implemented from the local to tha nation, even to the Continent. The local sustainable development mainly consists in two factors： one is the renovating method continually invented by European Secretariot of ICLEI, and the other is that the local authorities towards sustainability are co-operated by the European Sustainable Cities and Towns Campaign. The coo-budget method is the outcome of tbese factors, For our country is a big country, on rapid progression of indastrialization and urbanization, with a large population and scarce resoarces per capita, it is practically significance to study us soon as possible the methodology. Experience from European local sustainable development may help us to resolve the handicap of departraent division in local a, tbority.

关键词： Local sustainable development, Europe China Environmental management Department division

Discussion and Research on Information Security Attack and Defense Platform Construction in Universities Based on Cloud Computing and Virtualization

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Journal of Information Security 2016年第5期7卷 297-303页

作者： xiancheng Ding Changzhou University Information Center Changzhou China

This paper puts forward the plan on constructing information security attack and defense platform based on cloud computing and virtualization, provides the hardware topology structure of the platform and technical framework of the system and the experimental process and technical principle of the platform. The experiment platform can provide more than 20 attack classes. Using the virtualization technology can build hypothesized target of various types in the laboratory and diversified network structure to carry out attack and defense experiment.

关键词： Information Security Network Attack and Defense Virtualization Experiment Platform

Two-sided ultrasonic surface rolling process of aeroengine blades based on on-machine noncontact measurement

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Frontiers of Mechanical Engineering 2020年第2期15卷 240-255页

作者： Shulei YAO Xian CAO Shuang LIU Congyang GONG Kaiming ZHANG Chengcheng ZHANG xiancheng ZHANG Key Laboratory of Pressure Systems and Safety(Ministry of Education) East China University of Science and TechnologyShanghai 200237China AECC Commercial Aircraft Engine Co. Ltd.Shanghai Engineering Research Center for Commercial Aircraft EngineShanghai 201108China

As crucial parts of an aeroengine,blades are vulnerable to damage from long-term operation in harsh *** ultrasonic surface rolling process(USRP)is a novel surface treatment technique that can highly improve the mechanical behavior of *** secondary machining,the nominal blade model cannot be used for secondary machining path generation due to the deviation between the actual and nominal *** clamping error of the blade also affects the precision of secondary *** study presents a two-sided USRP(TS-USRP)machining for aeroengine blades on the basis of on-machine noncontact ***,a TS-USRP machining system for blade is ***,a 3D scanning system is used to obtain the point cloud of the blade,and a series of point cloud processing steps is performed.A local point cloud automatic extraction algorithm is introduced to extract the point cloud of the strengthened region of the ***,the tool path is designed on the basis of the extracted point ***,an experiment is conducted on an actual blade,with results showing that the proposed method is effective and efficient.

关键词： aeroengine blades on-machine noncontact measurement point cloud processing path planning surface strengthening

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开创“双碳农业”新局面

腐植酸 2024年第1期 I0001-I0001页

作者：曾宪成不详

2023年,“腐植酸直面双碳农业”作为“第8届全国土肥和谐大会”主题,赢得了社会各方的高度认同,新华网、中国农网、中国科学报、中国化工报、中华合作时报等国家权威媒体广为传播。“双碳农业”得到土肥界青睐,已成为社会关注的“热词... 详细信息

2023年,“腐植酸直面双碳农业”作为“第8届全国土肥和谐大会”主题,赢得了社会各方的高度认同,新华网、中国农网、中国科学报、中国化工报、中华合作时报等国家权威媒体广为传播。“双碳农业”得到土肥界青睐,已成为社会关注的“热词”。腐植酸是土壤的储碳库,联土联肥联生态,是直面“双碳农业”的新质生产力。2021年3月9日,联合国粮农组织发布研究成果,世界粮食体系温室气体排放量占全球人为排放量的1/3以上。粮食的生产阶段(包括肥料投入)是整个粮食体系排放的主要贡献者,占其排放总量的39%。毋庸置疑,实现“双碳”目标,农业减排重任在肩。

关键词：联合国粮农组织中国科学报新华网温室气体排放量腐植酸中国化工报中华合作时报农业减排

N-methyl-D-aspartate receptor effects on p38 mitogen activated protein kinase and its role in a rat model of diabetic neuropathic pain

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Neural Regeneration Research 2009年第11期4卷 868-873页

作者： Changbin Ke Xiaoxia Huang Xianghong Luo xiancheng Xu Chengming Qin Xianyu Wang Juying Liu Department of Anesthesiology Taihe Hospital Yunyang Medical College Shiyan 442000 Hubei Province China Department of Nephrology Taihe Hospital Yunyang Medical College Shiyan 442000 Hubei Province China

BACKGROUND： Activated N-methyl-D-aspartate （NMDA） receptor is involved in the formation of chronic neuropathic pain, and its antagonist, ketamine, exhibits effective amelioration of diabetic neuropathic pain （DNP）. However, the mechanisms of NMDA receptor participation in the formation and maintenance of DNP remain poorly understood. OBJECTIVE： To evaluate the role NMDA receptor plays in DNP and effects on p38 mitogen activated protein kinase （p38 MAPK） in a rat model of DNP. DESIGN, TIME AND SETTING： A randomized, controlled, animal experiment was performed at the Human Embryonic Stem Cell Research Institute of Yunyang Medical College Affiliated Taihe Hospital between July 2005 and September 2007. MATERIALS： Streptozotocin was provided by Sigma, USA; p38 MAPK inhibitor （SB203580） was provided by Shanghai KangChen Biotech, China; NMDA receptor antagonist （MK-801） was purchased from Shanghai Yope Biotech, China. METHODS： A total of 128 healthy, Wistar rats of clean grade, aged 3 months and weighing 180- 220 g, were randomly assigned to 4 groups： control, DNP model, p38 MAPK, and NMDA receptor. Each group contained 32 rats. DNP was established in all groups except for the control group by intraperitoneal injection of streptozocin （65 mg/kg）. Subsequently, 1 mg/kg SB203580 and 1 mg/kg MK-801 were injected once each week via intraperitoneal injection in the p38 MAPK and NMDA receptor groups, respectively. MAIN OUTCOME MEASURES： At the end of 2, 4, 6, and 8 weeks following streptozotocin injection, mechanical withdrawal threshold was measured in 8 animals from each group following von Frey filament stimulation. The rats were anesthetized and nerve conduction velocity of the left sciatic nerve was measured. Subsequently, the right sciatic nerve, the lumbar segment of the spinal cord, and dorsal root ganglia were removed from the L3-6 segment for microscopic examination, p38 MAPK expression was determined using immunohistochemistry and Western blot analysis. Expression of

关键词： N-methyI-D-aspartate receptors p38 mitogen-activated protein kinases diabetic neuropathy neuralgia

Superconductivity in zirconium polyhydrides with T_(c) above 70 K

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Science Bulletin 2022年第9期67卷 907-909,M0003页

作者： Changling Zhang Xin He Zhiwen Li Sijia Zhang Shaomin Feng xiancheng Wang Richeng Yu Changqing Jin Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China

Hydrogen is expected to be a metal at sufficient high pressures[1]while it can also be a high temperature superconductor based on BCS theory because of its high Debye temperature arising from the light mass of hydrogen[2].Since it is very challenging to reach the pressure for the hydrogen metallization,the “chemically precompressed” hydrogen-rich compounds were in turn proposed[3,4]to realize high temperature superconductivity at lower *** experimental discovery of high temperature superconductivity[5]in SH3 has greatly stimulated efforts to explore new hydrogen-rich superconductors,such as in rare earth polyhydrides[6,7].

关键词：高温超导超导现象高压高温激光加热金属化临界转变温度极端条件金属氢

Insights on“nitrate salt”in lithium anode for stabilized solid electrolyte interphase

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Carbon Energy 2022年第1期4卷 12-20页

作者： Lin Fu xiancheng Wang Zihe Chen Yuanjian Li Eryang Mao Zhi Wei Seh Yongming Sun Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhanChina Institute of Materials Research and Engineering Agency for ScienceTechnology and Research(A*STAR)SingaporeSingapore

A Li/KNO_(3) composite(LKNO),with KNO_(3) uniformly implanted in bulk metallic Li,is fabricated for battery anode via a facile mechanical kneading approach,which exhibits high Coulombic efficiency and prolonged cycle *** mechanism behind the enhanced electrochemical performance of the“salt-in-metal”composite is investigated,where KNO_(3) in metallic Li composite electrode would be sustainably released into the *** presence of NO_(3)-stabilizes the solid electrolyte interphase by producing functional Li_(3)N,LiNxOy,and Li_(2)O species.K^(+)from KNO_(3) also helps to form an electrostatic shield after its adsorption on the electrode protrusions,which suppresses the dendritic growth of metallic *** the above advantages,uniform Li plating with dense and planar structure is realized for the LKNO *** findings reveal a deep understanding of the effect of the“saltin-metal”anode and provide new insights into the use of nitrate additives for high-energy-density Li metal batteries.

关键词： electrostatic shield Li metal battery Li/KNO_(3)composite salt-in-metal stabilized solid electrolyte interphase sustained release