Porth Ymchwil

Coleg Gwyddoniaeth a Pheirianneg

6901 - 6950 o blith 11,233Maint y tudalen: 50
Trefnu yn ôl: Blwyddyn gyhoeddi
  1. 2015
  2. Cyhoeddwyd

    Climatic Consequences of a Pine Island Glacier Collapse

    Green, J. A. M. & Schmittner, A., 7 Rhag 2015, Yn: Journal of Climate. 28, 23, t. 9221-9234

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  3. Cyhoeddwyd

    Contrasting response to mowing in two abandoned rich fen plant communities

    Menichino, N. M., Fenner, N., Pullin, A. S., Jones, P. S., Guest, J. & Jones, L., 7 Rhag 2015, Yn: Ecological Engineering. 86, t. 210-222

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  4. Cyhoeddwyd

    Late winter biogeochemical conditions under sea ice in the Canadian High Arctic

    Findlay, H. S., Edwards, L. A., Lewis, C. N., Cooper, G. A., Clement, R., Hardman-Mountford, N., Vagle, S. & Miller, L. A., 9 Rhag 2015, Yn: Polar Research. 34

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  5. Cyhoeddwyd

    Cyclopentadithiophene-benzothiadiazole copolymers with permutations of repeating unit length and ratios; synthesis, optical and electrochemical properties and photovoltaic characteristics

    Chang, S. W., Kettle, J. P., Waters, R. H. & Horie, M., 11 Rhag 2015, Yn: RSC Advances. 5, 130, t. 107276-107284

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  6. Cyhoeddwyd

    What evidence exists on the impact of governance type on the conservation effectiveness of forest protected areas? Knowledge base and evidence gaps.

    Macura, B., Laura, S. & Pullin, A., 12 Rhag 2015, Yn: Environmental Evidence. 4, 24

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  7. Cyhoeddwyd

    Combined use of empirical data and mathematical modelling to better estimate the microbial turnover of isotopically labelled carbon substrates in soil

    Glanville, H., Hill, P. W., Schnepf, A., Oburger, E. & Jones, D. L., 14 Rhag 2015, Yn: Soil Biology and Biochemistry. 94, March 2016, t. 154-168

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  8. Cyhoeddwyd

    Similar effects of bottom trawling and natural disturbance on composition and function of benthic communities across habitats

    van Denderen, P. D., Bolam, S. G., Hiddink, J. G., Jennings, S., Kenny, A., Rijinsdorp, A. D. & van Kooten, T., 15 Rhag 2015, Yn: Marine Ecology Progress Series. 541, t. 31-43

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  9. Cyhoeddwyd

    Development and validation of real-time simulation of X-ray imaging with respiratory motion

    Vidal, F. P. & Villard, P. F., 17 Rhag 2015, Yn: Computerized Medical Imaging and Graphics. 49, t. 1-15

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  10. Cyhoeddwyd

    How noise pollution is changing animal behaviour

    Shannon, G., 17 Rhag 2015, The Conversation.

    Allbwn ymchwil: Cyfraniad at gyhoeddiad arbenigol › Erthygl

  11. Cyhoeddwyd

    Impact of climate change on UK estuaries: A review of past trends and potential projections

    Robins, P. E., Skov, M. W., Lewis, M. J., Gimenez, L., Davies, A. G., Malham, S. K., Neill, S. P., McDonald, J. E., Whitton, T. A., Jackson, S. E. & Jago, C. F., 17 Rhag 2015, Yn: Estuarine, Coastal and Shelf Science. 169, t. 119-135

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  12. Cyhoeddwyd

    Genomic islands of speciation separate cichlid ecomorphs in an East African crater lake

    Malinsky, M., Challis, R. J., Tyers, A. M., Schiffels, S., Terai, Y., Ngatunga, B. P., Miska, E. A., Durbin, R., Genner, M. J. & Turner, G. F., 18 Rhag 2015, Yn: Science. 350, 6267, t. 1493-1498

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  13. Cyhoeddwyd

    Light absorption in perovskite solar cell: Fundamentals and plasmonic enhancement of infrared band absorption

    Yue, L., Wang, Z., Yue, L. Y., Yan, B., Attridge, M. & Wang, Z. B., 18 Rhag 2015, Yn: Solar Energy. 124, t. 143-152

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  14. Cyhoeddwyd

    Questionable policy for large carnivore hunting

    Creel, S., Becker, M., Christianson, D., Droge, E., Hammerschlag, N., Hayward, M. W., Karanth, U., Loveridge, A., Macdonald, D. W., Matandiko, W., M'soka, J., Murray, D., Rosenblatt, E. & Schuette, P., 18 Rhag 2015, Yn: Science. 350, 6267, t. 1473-1475

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  15. Cyhoeddwyd

    Mitochondrial DNA analyses reveal widespread tardigrade diversity in Antarctica

    Velasco-Castrillon, A., McInnes, S. J., Schultz, M. B., Arroniz-Crespo, M., D'Haese, C. A., Gibson, J. A., Adams, B. J., Page, T. J., Austin, A. D., Cooper, S. J. & Stevens, M. I., 22 Rhag 2015, Yn: Invertebrate Systematics. 29, 6, t. 578-590

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  16. Cyhoeddwyd

    Characterization of the S. cerevisiae inp51 mutant links phosphatidylinositol 4,5-bisphosphate levels with lipid content, membrane fluidity and cold growth

    Corcoles, I., Hernandez, M. L., Martinez-Rivas, J. M., Prieto, J. A. & Randez-Gil, F., 24 Rhag 2015, Yn: Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids. 1861, 3, t. 213-226

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  17. Cyhoeddwyd

    Stocks and flows of natural and human-derived capital in ecosystem services

    Jones, L., Norton, L., Austin, Z., Browne, A. L., Donovan, D., Emmett, B. A., Grabowski, Z. J., Howard, D. C., Jones, J. P. G., Kenter, J. O., Manley, W., Morris, C., Robinson, D. A., Short, C., Siriwardena, G. M., Stevens, C. J., Storkey, J., Waters, R. D. & Willis, G. F., 29 Rhag 2015, Yn: Land Use Policy. 52, t. 151–162

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  18. 2016
  19. Cyhoeddwyd

    A new haemostatic device utilising a novel transmission structure for delivery of adrenaline and microwave energy at 5.8 GHz

    Preston, S., White, M., Saunders, B., Tsiamoulos, Z. & Hancock, C., 2016, 2016 46th European Microwave Conference (EuMC). IEEE Advancing Technology for Humanity, t. 910-913

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Cyfraniad i Gynhadledd › adolygiad gan gymheiriaid

  20. Cyhoeddwyd

    Acidophile microbiology in space and time

    Johnson, D. B. & Quatrini, R., 2016, Acidophiles: Life in Extremely Acidic Environments. Johnson, D. B. & Quatrini, R. (gol.). Caister Academic Press Limited, t. 3-16

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  21. Cyhoeddwyd

    Acidophiles: Life in Extremely Acidic Environments

    Quatrini, R. (Golygydd) & Johnson, B., 2016, Caister Academic Press Limited. 324 t.

    Allbwn ymchwil: Llyfr/Adroddiad › Llyfr › adolygiad gan gymheiriaid

  22. Cyhoeddwyd

    Anticipatory Modelling and Innovation Management

    Winder, N. & Winder, I., 2016, The Quest for a Model-Stakeholder Fusion : COMPLEX Final Scientific Report. Winder, N., Liljenstrom, H. & Seaton, R. (gol.). Sigtuna: Sigtuna Foundation Press, Cyfrol 1. t. 176-179 (Human Nature Series).

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

  23. Cyhoeddwyd
  24. Cyhoeddwyd

    Contrasting patterns of insect herbivory and predation acroiss a tropical rainfall and tree species richness gradient

    Weissflog, A., Markesteijn, L., Lewis, O. T. & Engelbrecht, B. M. J., 2016.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Murlen › adolygiad gan gymheiriaid

  25. Cyhoeddwyd

    Creating Explanatory Visualizations of Algorithms for Active Learning

    Roberts, J. C., Jackson, J., Headleand, C. & Ritsos, P. D., 2016. 2 t.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Murlen › adolygiad gan gymheiriaid

  26. Cyhoeddwyd

    Darwin's Goldilocks Problem

    Winder, N. & Winder, I., 2016, Non-Linearities and System Flips : COMPLEX Final Scientific Report. Winder, N. & Liljenstrom, H. (gol.). Sigtuna: Sigtuna Foundation Press, Cyfrol 2. t. 11-15

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

  27. Cyhoeddwyd

    Ecosystem impacts of an alien invader in Europe, the grey squirrel Sciurus carolinensis

    Gurnell, J., Lurz, P. W. W. & Shuttleworth, C., 2016, The grey squirrel: ecology and management in Europe. Shuttleworth, C. M., Lurz, P. W. W. & Gurnell, J. (gol.). European Squirrel Initiative, t. 307-329

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  28. Cyhoeddwyd

    Experiences of grey squirrel management in an upland conifer forest

    Halliwell, E. C., Shuttleworth, C., Cartmel, S., Lloyd, I. & Jenkins, R., 2016, The grey squirrel: ecology and management in Europe. Shuttleworth, C. M., Lurz, P. W. W. & Gurnell, J. (gol.). European Squirrel Initiative, t. 453-474

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  29. Cyhoeddwyd

    Final report on project SP1210: Lowland peatland systems in England and Wales – evaluating greenhouse gas fluxes and carbon balances

    Evans, C., Morrison, R., Burden, A., Williamson, J., Baird, A., Brown, E., Callahan, N., Chapman, P., Cumming, A., Dean, H., Dixon, S., Dooling, G., Evans, J., Gauci, V., Grayson, R., Haddaway, N., He, Y., Heppell, K., Holden, J., Hughes, S., Kaduk, J., Jones, D. L., Matthews, R., Menichino, N., Misselbrook, T., Page, S., Pan, G., Peacock, M., Rayment, M., Ridley, L., Robinson, I., Rylett, D., Scowen, M., Stanley, K. & Worrall, F., 2016, Centre for Ecology & Hydrology .

    Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn › adolygiad gan gymheiriaid

  30. Cyhoeddwyd

    Fit Genes Hide

    Winder, N. & Winder, I., 2016, Non-Linearities and System Flips : COMPLEX Final Scientific Report. Winder, N. & Liljenstrom, H. (gol.). Sigtuna: Sigtuna Foundation Press, Cyfrol 2. t. 30-35

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

  31. Cyhoeddwyd

    Genetic evidence of the effectiveness of grey squirrel control operations: lessons from the Isle of Anglesey

    Signorile, L. & Shuttleworth, C., 2016, The grey squirrel: ecology and management in Europe. Shuttleworth, C. M., Lurz, P. W. W. & Gurnell, J. (gol.). European Squirrel Initiative, t. 439-452

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  32. Cyhoeddwyd

    Grey squirrel management in Europe - the future

    Shuttleworth, C., Lurz, P. W. W. & Gurnell, J., 2016, The grey squirrel: ecology and management in Europe. Shuttleworth, C. M., Lurz, P. W. W. & Gurnell, J. (gol.). European Squirrel Initiative

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  33. Cyhoeddwyd

    Grey squirrel nesting ecology and the use of nest sites in European population management

    Shuttleworth, C., Selonen, V. & Koprowski, J. L., 2016, The grey squirrel: ecology and management in Europe. Shuttleworth, C. M., Lurz, P. W. W. & Gurnell, J. (gol.). European Squirrel Initiative, t. 349-369

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  34. Cyhoeddwyd

    High accuracy 235U(n,f) data in the resonance energy region

    Paradela, C., Duran, I., Tassan-Got, L., Audouin, L., Berthier, B., Isaev, S., Le Naour, C., Stephan, C., Tarrío, D., Abbondanno, U., Aerts, G., ?lvarez-Pol, H., ?lvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Badurek, G., Baumann, P., Becvar, F., Berthoumieux, E., Calviño, F., Calviani, M., Cano-Ott, D., Capote, R., Carrapi?o, C., Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Couture, A., Cox, J., Dahlfors, M., David, S., Dillmann, I., Domingo-Pardo, C., Dridi, W., Eleftheriadis, C., Embid-Segura, M., Ferrant, L., Ferrari, A., Ferreira-Marques, R., Fujii, K., Furman, W., Gon?alves, I. F., Gonzalez-Romero, E., Goverdovski, A., Gramegna, F., Guerrero, C., Gunsing, F., Haight, R., Heil, M., Igashira, M., Jericha, E., Kadi, Y., Kaeppeler, F., Karadimos, D., Kerveno, M., Ketlerov, V., Koehler, P., Konovalov, V., Krticka, M., Lampoudis, C., Lederer, C., Leeb, H., Lindote, A., Lukic, S., Marganiec, J., Martinez, T., Marrone, S., Massimi, C., Mastinu, P., Mengoni, A., Milazzo, P. M., Moreau, C., Mosconi, M., Pancin, S. J., Pavlik, A., Pavlopoulos, P., Perrot, L., Plag, R., Plompen, A., Plukis, A., Poch, A., Pretel, C., Praena, J., Quesada, J., Rauscher, T., Reifarth, R., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Santos, C., Sarchiapone, L., Savvidis, I., Tagliente, G., Tain, J. L., Tavora, L., Terlizzi, R., Vaz, P., Ventura, A., Villamarin, D., Vincente, M. C., Vlachoudis, V., Vlastou, R., Voss, F., Walter, S., Weiss, C., Wiesher, M. & Wisshak, K., 2016, EPJ Web of Conferences. Cyfrol 111. (EPJ Web of Conferences).

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Cyfraniad i Gynhadledd › adolygiad gan gymheiriaid

  35. Cyhoeddwyd

    Identifying incursion pathways, early detection responses and management actions to prevent grey squirrel range expansion: an island case study in Wales

    Shuttleworth, C., Halliwell, E. C. & Robertson, P. A., 2016, The grey squirrel: ecology and management in Europe. Shuttleworth, C. M., Lurz, P. W. W. & Gurnell, J. (gol.). European Squirrel Initiative, t. 475-494

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  36. Cyhoeddwyd

    Immersive Analytics with WebVR and Google Cardboard

    Putcher, P. W. S., Roberts, J. C. & Ritsos, P. D., 2016.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Murlen › adolygiad gan gymheiriaid

  37. Cyhoeddwyd

    Integrative Research and the Stakeholder Problem

    Winder, N. & Winder, I., 2016, The Quest for a Model-Stakeholder Fusion: COMPLEX Final Scientific Report . Winder, N., Liljenstrom, H. & Seaton, R. (gol.). Sigtuna: Sigtuna Foundation Press, Cyfrol 1. t. 157-175 (Human Nature Series).

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

  38. Cyhoeddwyd

    Iron-mineral accretion from acid mine drainage and its application in passive treatment

    Florence, K., Sapsford, D. J., Johnson, D. B., Kay, C. & Wolkersdorfer, C., 2016, Yn: Environmental Technology. 37, 11, t. 1428-1440

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  39. Cyhoeddwyd

    Kit and method – Publication No. WO 2016/024116 A1

    Gwenin, C. (Dyfeisiwr) & Baird, M. (Dyfeisiwr), 2016, Rhif y patent WO 2016/024116 A1

    Allbwn ymchwil: Patent

  40. Cyhoeddwyd

    Life cycle assessment of pilot-scale wood fibre production using mechanical disc refining at different pressures

    Skinner, C., Stefanowski, B., Heathcote, D., Charlton, A. & Ormondroyd, G., 2016, Yn: International Wood Products Journal. 7, 3, t. 149-155

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  41. Cyhoeddwyd

    Livelihoods and Welfare Impacts of Forest Comanagement

    Chinangwa, L., Pullin, A. & Hockley, N., 2016, Yn: International Journal of Forestry Research. 2016, 12 t., 5847068.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  42. Cyhoeddwyd

    Local knowledge reveals the important roles that trees play in smallholder farming systems in Eastern Uganda

    Agaba, G., Le Thi, T. & Agaba, M., 2016, Agriculture for Development, 28, t. 7-9.

    Allbwn ymchwil: Cyfraniad at gyhoeddiad arbenigol › Erthygl

  43. Cyhoeddwyd

    Mathematical models of grey squirrel invasion: a case study on Anglesey

    Jones, H. E., White, A., Lurz, P. W. W., Boots, M. & Shuttleworth, C., 2016, The grey squirrel: ecology and management in Europe. Shuttleworth, C. M., Lurz, P. W. W. & Gurnell, J. (gol.). European Squirrel Initiative, t. 235-255

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  44. Cyhoeddwyd

    Method and kit for detection of mycobacteria

    Gwenin, C. (Dyfeisiwr) & Baird, M. (Dyfeisiwr), 2016, Rhif y patent WO 2016/024118

    Allbwn ymchwil: Patent

  45. Cyhoeddwyd

    Microbial communities and interactions in low pH environments

    Johnson, D. B., 2016, Acidophiles: Life in Extremely Acidic Environments. Quatrini, R. & Johnson, D. B. (gol.). Caister Academic Press Limited, t. 121-138

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  46. Cyhoeddwyd

    Modelling the Modelling Process

    Winder, N. & Winder, I., 2016, The Quest for a Model-Stakeholder Fusion : COMPLEX Final Scientific Report. Winder, N., Liljenstrom, H. & Seaton, R. (gol.). Sigtuna: Sigtuna Foundation Press, Cyfrol 1. t. 180-188 (Human Nature Series).

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

  47. Cyhoeddwyd

    Nitrogen, Phosphorus, and Potassium Flows through the Manure Management Chain in China

    Bai, Z., Ma, L., Jin, S., Ma, W., Velthof, G. L., Oenema, O., Liu, L., Chadwick, D. & Zhang, F., 2016, Yn: Environmental Science and Technology. 50, 24, t. 13409-13418

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  48. Cyhoeddwyd

    Optical biochemical sensor based on long period fibre grating with graphene oxide nanocoating for haemoglobin detection

    Chen, X., Shaikh, M., Liu, C., Cai, Q. & Zhao, J., 2016.

    Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid

  49. Cyhoeddwyd

    Ranging behaviour, density and social structure in grey squirrels

    Lawton, C., Shuttleworth, C. & Kenward, R. E., 2016, The grey squirrel: ecology and management in Europe. Shuttleworth, C. M., Lurz, P. W. W. & Gurnell, J. (gol.). European Squirrel Initiative, t. 133-152

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  50. Cyhoeddwyd

    Recent developments in rattlesnake phylogenetics, phylogeography and species delimitation

    Wüster, W., 2016, Rattlesnakes of Arizona. Schuett, G. W., Feldner, M. J., Smith, C. F. & Reiserer, R. S. (gol.). Rodeo, New Mexico: Eco Publishing, Cyfrol 2. t. 9 29 t.

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod › adolygiad gan gymheiriaid

  51. Cyhoeddwyd

    Saltation, Emergence and Non-Linear Dynamics

    Winder, N. & Winder, I., 2016, Non-Linearities and System Flips : COMPLEX Final Scientific Report . Winder, N. & Liljenstrom, H. (gol.). Sigtuna: Sigtuna Foundation Press, Cyfrol 2. t. 16-29

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

  52. Cyhoeddwyd

    Seasonal Variation of Mono, Di and Polysaccharides in British Bluebells (Hyacinthoides Non-Scripta)

    Raheem, D. & Thoss, V., 2016, Yn: Journal of Plant Chemistry and Ecophysiology. 1, 1, 1005.

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

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