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| 1 | Pt/TiO_2光催化氧化还原耦合反应脱除水中无机氮显示文摘本文采用光催化还原法制备了高活性的载铂二氧化钛光催化剂,并用XRF、TEM、XRD对样品进行了表征,考察了pH值、负载Pt的含量、Fe2+的添加及保护气的种类等反应条件对该催化剂活性的影响。结果表明:碱性条件下利于氨氮、亚硝酸氮的耦合脱氮反应,载铂量0.5%时去除效果最佳,Fe2+的加入利于光催化反应,氮气保护下催化剂反应活性更高。 | 李秀婷 柳丽芬 杨凤林 张兴文 John Barford | 2006 | 无机化学学报2006，22，7： | 13 |
| 2 | Non-UV germicidal activity of fresh TiO_2 and Ag/TiO_2显示文摘Fresh TiO2 was found to possess a strong germicidal activity even without UV irradiation. Live Yeast (Saccharomyces cerevisiae) cells in contact with fresh TiO2 were found deformed and dead after 15 min contact. The cause of germicidal activity was discussed from the observed cell deformation, lysis and increased absorption at 1680 cm1 in FT-IR spectra of the affected cells, which proved the oxidizing effect of fresh TiO2 to cells. The deformation caused by the stretching of cell wall and pressure built-up inside the cell, led to cell burst and release of intracellular materials. The degree of cell deformation was found positively related with the wetting property of TiO2. Cells are negatively charged, for Gram-negative cell (thinner cell wall), a higher germicidal effect was observed than Gram-positive cells. The germicidal effect of TiO2 gradually decreased after exposure to air at room temperature, as the wetting property decreased. This kind of germicidal activity was more effective compared to other germicidal process such as UVA/TiO2 or Ag+. This shed light on designing new germicidal material either maintained by visible light irradiation, or by oxidation effect generated by reactive oxygen species. | LIU Lifen John Barford YEUNG King Lun | 2009 | Journal of Environmental Sciences2009，21，5： | 3 |
| 3 | Non-UV based germicidal activity of metal-doped TiO_2 coating on solid surfaces显示文摘A stain-based screening method was developed to screen different catalyst coatings for their germicidal activity.A Baclight dead/livebacteria viability kit(invitrogen,molecular probes)was used for staining the cell.The screening was carried out following a standardprocedure.This included loading cell suspension to solid surface and maintaining contact for 30 min,then staining with a mixturecontaining dyes.The stained cells were observed using an epifluorescent microscope and photographed with a CCD camera under UV.Metal-doped TiO2 coatings on Al plates were prepared and tested for non-UV germicidal activity without using UV.It was tested usingmodel microorganisms such as Bakers Yeast(Saccharomyces cerevisiae),Bacillus subtilis,Pseudomonas putida,and Escherichia coli.On the basis of the germicidal activity of catalyst and the degree of damage caused to the cells,the stained cells may appear green(viable),green with red or yellow nuclei and yellow(compromised)or red(nonviable).According to their stained color,cells werecounted to calculate the percentage of dead,live,and compromised cells.Compromised cells are cells that grow very slowly afterreculturing indicating a degree of reversible cell damage.Screening the germicidal activity using this staining method is accurate andeffcient,and requires less time than the culture-based method.A modification to the procedure for measuring germicidal activity ofrough surfaces or fibrous coatings was developed.Both TiO2 and metal-doped TiO2(Ag,Pt,Au,Cu)possess non-UV based germicidalactivity.The germicidal activity of TiO2 was found to be related with its wetting property and can be improved by UV irradiation beforetesting.It is not greatly affected by contact time,indicating a fast acting germicidal activity. | LIU Li-fen John Barford YEUNG King Lun SI Grace | 2007 | Journal of Environmental Sciences2007，19，6： | 2 |
| 4 | Molecular mechanisms of the protein serine/threonie phosphatase显示文摘 | Barford D | 1996 | TIBS1996，21，： | 1 |
| 5 | Precipitation, Chelation and the Availability of Metal As Nutrients in Anaerobic Digestion Ⅱ显示文摘 | BUSWELL A M BARFORD J P | 1994 | Applications Bioteeh and Bioeng1994，15，： | 1 |
| 6 | Crystal structure of human protein tyrosine phosphatase 1b显示文摘 | Barford D Flint A J Tonks N K | 1994 | Science1994，263，： | 1 |
| 7 | Efficient net- work tomography for internet topology discovery 显示文摘 | Faiksson B Dasarathy G Barford P Nowak R | 2012 | IEEE ACM Transactions on Networking2012，20，3： | 1 |
| 8 | The structure of cat muscle pyruvate kinase显示文摘 | Clayden DA Barford D | 1986 | EMBO J1986，5，3： | 1 |
| 9 | Production of enzymes by fermentation显示文摘 | Barford H C | 1981 | In Essaysin in Applied Microbiology1981，231，： | 1 |
| 10 | Life expectancy : women now on top everywhere显示文摘 | Barford A Dorling D Smith G | 2006 | BMJ2006，332，7545： | 1 |
| 11 | A learning- based approach for IP geolocation 显示文摘 | Eriksson B Barford P Sommers J | 2010 | Lecture Notes in Computer Science2010，6032，： | 1 |
| 12 | Improving accuracy in end-to-end packet loss measurement显示文摘 | Sommers J Barford P Duffield N | 2005 | Computer Commu- nication Review2005，35，4： | 1 |
| 13 | Improving accuracyin end-to-end packet loss measurement显示文摘 | Sommers J Barford P Duffield N | 2005 | SIGCOMM Com-put Commun Rev2005，35，4： | 1 |
| 14 | The structure of the tet- ratricopeptide repeats of protein phosphatase 5:implications for TPR-mediated proteinprotein interactions 显示文摘 | Das A K Cohen P T W Barford D | 1998 | EMBO Journal1998，17，： | 1 |
| 15 | A model of catheter - associ- ated urinary tract infection initiated by bacterial contamination of the catheter tip 显示文摘 | Barford JMT Anson K Hu Y | 2008 | BJU international2008，102，1： | 1 |
| 16 | Filtering of randomly sampled time-stamped measurement显示文摘 | Barford L | 2008 | IEEE Transactions on Instrumentation and Measurement2008，57，2： | 1 |
| 17 | Argonaute: A scaffold for the function of short regulatory RNAs显示文摘 | PARKER J S BARFORD D | 2006 | Trends Biochem Sci2006，31，1： | 1 |
| 18 | Structural insights into mRNA recognition from a PIWI domain-siRNA guide complex显示文摘 | Parker J S Roe S M Barford D | 2005 | Nature2005，434，： | 1 |
| 19 | Structural insights into mRNA recognition from a PIWI domain-siRNA guide complex显示文摘 | Parker JS Roe SM Barford D | 2005 | Nature2005，434，7033： | 1 |
| 20 | Internet intrusions: Global characteristics and preva- lence显示文摘 | YEGNESWARAN V BARFORD P ULLRICH J | 2003 | ACM SIGMETRICS Performance Evaluation Review2003，31，1： | 1 |
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