Ysgol Gwyddorau Amgylcheddol a Naturiol

  1. Erthygl › Ymchwil › Adolygwyd gan gymheiriaid
  2. Cyhoeddwyd

    Cutting edge: IPSE/alpha-1, a glycoprotein from Scbistosoma mansoni eggs, induces IgE-dependent antigen-indenendent IL-4 production by murine basophils in vivo.

    Schramm, G., Mohrs, K., Wodrich, M., Doenhoff, M. J., Pearce, E. J., Haas, H. & Mohrs, M., 15 Mai 2007, Yn: Journal of Immunology. 178, 10, t. 6023-6027

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  3. Cyhoeddwyd

    Cuttlefish in captivity: An investigation into housing and husbandry for improving welfare

    Tonkins, B., Tonkins, B. M., Tyers, A. M. & Cooke, G. M., 28 Ebr 2015, Yn: Applied Animal Behaviour Science. 168, t. 77-83

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  4. Cyhoeddwyd

    Cyclic guanidine containing amino acids that promote glucocerebrosidase

    Al-Taie, Z. S., Bartholomew, B., Coles, S. J., Evans, D. M., Hollinshead, J., Jones, L. F., Kraehenbuehl, R., Murphy, P. J., Nash, R. J., Penkova, Y. B. & Tizzard, G. J., 24 Medi 2022, Yn: Tetrahedron. 123, 132959.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  5. Cyhoeddwyd

    Cyclisation reactions of bis-protected guanidines.

    Albrecht, C., Barnes, S., Bockemeier, H., Davies, D., Dennis, M., Evans, D. M., Fletcher, M. D., Jones, I., Leitmann, V., Murphy, P. J., Rowles, R., Nash, R., Stephenson, R. A., Horton, P. N. & Hursthouse, M. B., 1 Ion 2008, Yn: Tetrahedron Letters. 49, 1, t. 185-188

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  6. Cyhoeddwyd

    Cyclization and Rearrangement Reactions of an Fragment Ions of Protonated Peptides

    Bythell, B. J., Maître, P. & Paizs, B., 6 Hyd 2010, Yn: Journal of the American Chemical Society. 132, 42, t. 14766-14779

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  7. Cyhoeddwyd

    Cyclo-boratrisiloxane and cyclo-diboratetrasiloxane derivatives and their reactions with amines: crystal and molecular structure of (p-BrC6H4BO)(2)(Ph2SiO)(2)

    Beckett, M. A., Hibbs, D. E., Hursthouse, M. B., Malik K.M.A.*, [. V., Owen, P. & Varma, K. S., 15 Chwef 2000, Yn: Journal of Organometallic Chemistry. 595, 2, t. 241-147

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  8. Cyhoeddwyd

    Cytological and enzymatic responses to aluminium stress in root tips of Norway spruce seedlings.

    Nagy, N. E., Dalen, L. S., Jones, D. L., Swensen, B., Fossdal, C. G. & Eldhuset, T. D., 1 Medi 2004, Yn: New Phytologist. 163, 3, t. 595-607

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  9. Cyhoeddwyd

    DFT studies on hexaborate(2-) and heptaborate(2-) anions

    Davies, R., Beckett, M. & Jones, C., 1 Ebr 2016, Yn: Phosphorus, Sulfur and Silicon and the Related Elements. 191, 4, t. 633-637

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  10. Cyhoeddwyd

    DMPP is ineffective at mitigating N2O emissions from sheep urine patches in a UK grassland under summer conditions

    Marsden, K., Jones, D. & Chadwick, D., 1 Awst 2017, Yn: Agriculture, Ecosystems and Environment. 246, t. 1-11 11 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  11. Cyhoeddwyd

    DNA Barcoding Reveals Cryptic Diversity within Commercially Exploited Indo-Malay Carangidae (Teleosteii: Perciformes)

    De Bruyn, M., Jaafar, T. N., Taylor, M. I., Nor, S. A., de Bruyn, M. & Carvalho, G. R., 29 Tach 2012, Yn: PLoS ONE. 7, 11, t. e49623

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  12. Cyhoeddwyd

    DNA Metabarcoding Methods for the Study of Marine Benthic Meiofauna

    Gielings, R., Fais, M., Fontaneto, D., Creer, S., Costa, F. O., Renema, W. & Macher, J.-N., 30 Medi 2021, Yn: Frontiers in Marine Science.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  13. Cyhoeddwyd

    DNA barcodes of fish of the Scotia Sea, Antarctica indicate priority groups for taxonomic and systematics focus.

    Rock, J., Costa, F. O., Walker, D. I., North, A. W., Hutchinson, W. F. & Carvalho, G. R., 1 Meh 2008, Yn: Antarctic Science. 20, 3, t. 253-262

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  14. Cyhoeddwyd

    DNA barcoding for species assignment: the case of Mediterranean marine fishes

    Carvalho, G. R., Landi, M. D., Arculeo, M., Biondo, G., Martins, R. & Carneiro, M., 15 Medi 2014, Yn: PLoS ONE. 9, 9

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  15. Cyhoeddwyd

    DNA markers indicate that distinct spawning cohorts and aggregations of Patagonian squid, Loligo gahi, do not represent genetically discrete subpopulations

    Shaw, P. W., Arkhipkin, A. I., Adcock, G. J., Burnett, W. J., Carvalho, G. R., Scherbich, J. N. & Villegas, P. A., 1 Mai 2004, Yn: Marine Biology. 144, 5, t. 961-970

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  16. Cyhoeddwyd

    DNA metabarcoding-Need for robust experimental designs to draw sound ecological conclusions

    Zinger, L., Bonin, A., Alsos, I. G., Bálint, M., Bik, H., Boyer, F., Chariton, A. A., Creer, S., Coissac, E., Deagle, B. E., De Barba, M., Dickie, I. A., Dumbrell, A. J., Ficetola, G. F., Fierer, N., Fumagalli, L., Gilbert, M. T. P., Jarman, S., Jumpponen, A., Kauserud, H., Orlando, L., Pansu, J., Pawlowski, J., Tedersoo, L., Thomsen, P. F., Willerslev, E. & Taberlet, P., Ebr 2019, Yn: Molecular Ecology. 28, 8, t. 1857-1862 6 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  17. Cyhoeddwyd

    Daily patterns in parasite processes: diel variation in fish louse transcriptomes

    Hunt, R., Cable, J. & Ellison, A., Gorff 2022, Yn: International Journal for Parasitology. 52, 8, t. 509-518 10 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  18. Cyhoeddwyd

    Damage and responsiveness of Jamaican montane tree species after disturbance by a hurricane

    Bellingham, P. J., Tanner, E. V. J. & Healey, J., 1995, Yn: Ecology. 76, 8, t. 2562-2580

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  19. Cyhoeddwyd

    Data credibility: A perspective from systematic reviews in environmental management.

    Pullin, A. S. & Knight, T., 1 Meh 2009, Yn: New Directions for Evaluation. 122, t. 65-74

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  20. Cyhoeddwyd

    Data for life cycle assessment of legume biorefining for alcohol

    Lienhardt, T., Black, K., Saget, S., Porto Costa, M., Chadwick, D., Rees, R. M., Williams, M., Spillane, C., Iannetta, P. M., Walker, G. & Styles, D., Awst 2019, Yn: Data in Brief. 104242.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  21. Cyhoeddwyd

    Data on how tree planting and management practices influence tree seedling survival in Kenya and Ethiopia

    Magaju, C., Winowiecki, L. A., Bartolini, P., Jeitani, A., Ochenje, I., Frija, A., Ouerghemmi, H., Vågen, T.-G., Makui, P., Bonaiuti, E., Hagazi, N., Tofu, A., Sitotaw, A., Crossland, M., Kiura, E., Hadgu, K., Muriuki, J., Carsan, S., Sola, P. & Sinclair, F., 1 Meh 2021, Yn: Data in Brief. 36, 107073.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  22. Cyhoeddwyd

    Data presenting the synthesis of three novel stimuli responsive hyperbranched polymers synthesised via RAFT polymerisation and the bio conjugation of folic acid

    Blackburn, C., Tai, H., Salerno, M., Wang, X., Senan, C., Ratcliffe, I., Hartsuiker, E. & Wang, W., Chwef 2020, Yn: Data in Brief. 28, 104861.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  23. Cyhoeddwyd

    Ddb1 controls genome stability and meiosis in fission yeast.

    Holmberg, C., Fleck, O., Hansen, H. A., Liu, C., Slaaby, R., Carr, A. M. & Nielsen, O., 1 Ebr 2005, Yn: Genes and Development. 19, 7, t. 853-862

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  24. Cyhoeddwyd

    Decay rates of faecal indicator bacteria from sewage and ovine faeces in brackish and freshwater microcosms with contrasting suspended particulate matter concentrations

    Perkins, T. L., Perrow, K. A., Rajko-Nenow, P., Jago, C. F., Jones, D. L., Malham, S. K. & McDonald, J. E., 1 Rhag 2016, Yn: Science of the Total Environment. 572, t. 1645-1652

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  25. Cyhoeddwyd

    Decay resistance of acetylated and hexanoylated hardwood and softwood species exposed to Coniophora puteana.

    Hill, C. A., Curling, S. F., Kwon, J. H. & Marty, V., 1 Awst 2009, Yn: Holzforschung. 63, 5, t. 619-625

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  26. Cyhoeddwyd

    Decay threshold of acetylated rattan (Calamus manan) against soft rot

    Hamid, N. H. & Hale, M. D., 28 Ebr 2013, Yn: Journal of Forestry Research. 24, 2, t. 375-380

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  27. Cyhoeddwyd

    Deciduous woodland exposed to elevated atmospheric CO2 has species-specific impacts on anecic earthworms

    Scullion, J., Smith, A. R., Gwynn-Jones, D., Jones, D. L. & Godbold, D. L., 1 Awst 2014, Yn: Applied Soil Ecology. 80, t. 84-92

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  28. Cyhoeddwyd

    Deciphering soil environmental regulation on reassembly of the soil bacterial community during wetland restoration

    Qin, L., Ni, B., Zou, Y., Freeman, C., Peng, X., Yang, L., Wang, G. & Jiang, M., 1 Rhag 2024, Yn: Science of the Total Environment. 954, t. 176586

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  29. Cyhoeddwyd

    Decision Support Frameworks and Tools for Conservation

    Schwartz, M., Cook, C., Pressey, R., Pullin, A., Runge, M., Salafsky, N., Sutherland, W. & Williamson, M., Maw 2018, Yn: Conservation Letters. 11, 2, e12385.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  30. Cyhoeddwyd

    Declining reactivation ability of Escherichia coli O157 following incubation within soil

    Williams, A. P., Gordon, H. E., Jones, D. L., Killham, K., Strachan, N. J. & Forbes, K. J., 1 Awst 2013, Yn: Soil Biology and Biochemistry. 63, t. 85-88

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  31. Cyhoeddwyd

    Decoding the ocean's microbiological secrets for marine enzyme biodiscovery

    Ferrer, M., Mendez-Garcia, C., Bargiela, R., Chow, J., Alonso, S., Garcia-Moyano, A., Bjerga, G. E. K., Steen, I. H., Schwabe, T., Blom, C., Vester, J., Weckbecker, A., Shahgaldian, P., de Carvalho, C. C. C. R., Meskys, R., Zanaroli, G., Gloeckner, F. O., Fernandez-Guerra, A., Thambisetty, S., de la Calle, F., Golyshina V, O., Yakimov, M. M., Jaeger, K.-E., Yakunin, A. F., Streit, W. R., McMeel, O., Calewaert, J.-B., Tonne, N., Golyshin, P. N. & Consortium, I., 1 Ion 2019, Yn: FEMS Microbiology Letters. 366, 1, fny285.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  32. Cyhoeddwyd

    Decomposition as a regulator of carbon accretion in mangroves: a review

    Friesen, S., Dunn, C. & Freeman, C., Ebr 2018, Yn: Ecological Engineering. 114, t. 173-178

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  33. Cyhoeddwyd

    Decomposition ‘hotspots’ in a rewetted peatland: implications for water quality and carbon cycling

    Fenner, N., Williams, R., Toberman, H., Hughes, S., Reynolds, B. & Freeman, C., 1 Hyd 2011, Yn: Hydrobiologia. 674, 1, t. 51-66

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  34. Cyhoeddwyd

    Deconstructing compassionate conservation

    Hayward, M. W., Callen, A., Allen, B. L., Ballard, G., Broekhuis, F., Bugir, C., Clarke, R. H., Clulow, J., Clulow, S., Daltry, J. C., Davies-Mostert, H. T., Fleming, P. J. S., Griffin, A. S., Howell, L. G., Kerley, G. I. H., Klop-Toker, K., Legge, S., Major, T., Meyer, N., Montgomery, R. A., Moseby, K., Parker, D. M., Périquet, S., Read, J., Scanlon, R., Seeto, R., Shuttleworth, C., Somers, M. J., Tamessar, C. T., Tuft, K., Upton, R., Valenzuela-Molina, M., Wayne, A., Witt, R. R. & Wuster, W., Awst 2019, Yn: Conservation Biology. 33, 4, t. 760-768

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  35. Cyhoeddwyd

    Decoupled richness of generalist anaerobes and sulphate-reducing bacteria is driven bypHacross land uses in temperate soils

    George, P. B. L., Coelho, K. P., Creer, S., Lebron, I., Robinson, D. A. & Jones, D. L., Tach 2021, Yn: European Journal of Soil Science. 72, 6, t. 2445-2456 12 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  36. Cyhoeddwyd

    Decoupling of microbial glucose uptake and mineralization in soil.

    Hill, P. W., Farrar, J. F. & Jones, D. L., 1 Maw 2008, Yn: Soil Biology and Biochemistry. 40, 3, t. 616-624

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  37. Cyhoeddwyd

    Decreased soil microbial biomass and nitrogen mineralisation with Eucalyptus biochar addition to a coarse textured soil

    Dempster, D. N., Gleeson, D. B., Solaiman, Z. M. & Jones, D. L., Mai 2012, Yn: Plant and Soil. 354, 1-2, t. 311-324

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  38. Cyhoeddwyd

    Deep segregation in the open ocean: Macaronesia as an evolutionary hotspot for low dispersal marine invertebrates

    Vieira, P. E., Desiderato, A., Holdich, D. M., Soares, P., Creer, S., Carvalho, G., Costa, F. O. & Queiroga, H., 1 Ebr 2019, Yn: Molecular Ecology. 28, 7, t. 1784-1800

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  39. Cyhoeddwyd

    Deep-C storage: Biological, chemical and physical strategies to enhance carbon stocks in agricultural subsoils

    Button, E. S., Pett-Ridge, J., Murphy, D. V., Kuzyakov, Y., Chadwick, D. R. & Jones, D. L., Gorff 2022, Yn: Soil Biology and Biochemistry. 170, 1 t., 108697.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  40. Cyhoeddwyd

    Defending illicit livelihoods: youth resistance in Harare's contested spaces.

    Kamete, A. & Kamete, A. Y., 1 Maw 2010, Yn: International Journal of Urban and Regional Research. 34, 1, t. 55-75

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  41. Cyhoeddwyd

    Defense on the Rocks: Low Monoterpenoid Levels in Plants on Pillars Without Mammalian Herbivores.

    Muller-Schwarze, D. & Thoss, V., 1 Tach 2008, Yn: Journal of Chemical Ecology. 34, 11, t. 1377-1381

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  42. Cyhoeddwyd

    Defining and using evidence in conservation practice

    Salafsky, N., Boshoven, J., Burivalova, Z., Dubois, N. S., Gomez, A., Johnson, A., Lee, A., Margoluis, R., Morrison, J., Muir, M., Pratt, S. C., Pullin, A. S., Salzer, D., Stewart, A., Sutherland, W. J. & Wordley, C. F. R., Mai 2019, Yn: Conservation Science and Practice. 1, 5, t. e27

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  43. Cyhoeddwyd

    Deforestation since Independence: A quantitative assessment of four decades of land cover change in Malawi

    Bone, R. A., Parks, K., Hudson, M., Tsirinzeni, M. & Willcock, S., 1 Rhag 2016, Yn: Southern Forests: A Journal of Forest Science. t. 1-7 7 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  44. Cyhoeddwyd

    Degradation Network Reconstruction in Uric Acid and Ammonium Amendments in Oil-Degrading Marine Microcosms Guided by Metagenomic Data

    Bargiela, R., Gertler, C., Mapelli, F., Magagnini, M., Chen, J., Daffonchio, D., Golyshin, P. & Ferrer, M., 24 Tach 2015, Yn: Frontiers in Microbiology. 6

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  45. Cyhoeddwyd

    Degradation of Hydrocarbons and Heavy Metal Reduction by Marine Bacteria in Highly Contaminated Sediments

    Dell'Anno, F., Brunet, C., van Zyl, L. J., Trindade, M., Golyshin, P., Dell'Anno, A., Ianora, A. & Sansone, C., 11 Medi 2020, Yn: Microorganisms . 8, 9

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  46. Cyhoeddwyd

    Degradation of wheat straw lignin and hemicellulosic polymers by a totally chlorine-free method

    Sun, R., Sun, X. F., Sun, R. C., Tomkinson, J. & Baird, M. S., 1 Ion 2004, Yn: Polymer Degradation and Stability. 83, 1, t. 47-57

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  47. Cyhoeddwyd

    Dehydrohalogenation of substituted diethyl halocyclopropane -1,1-dicarboxylates

    Boitsov, V. M., Kostikov, R. R., Molchanov, A. P., Stepakov, A. V. & Baird, M. S., 1 Rhag 2004, Yn: Russian Journal of Organic Chemistry. 40, 12, t. 1760-1763

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  48. Cyhoeddwyd

    Deinking paper fibre application to agricultural land: soil quality enhancer or copper polluter?

    Tandy, S., Williamson, J. C., Nason, M. A., Healey, J. R. & Jones, D. L., 1 Meh 2008, Yn: Soil Use and Management. 24, 2, t. 217-220

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  49. Cyhoeddwyd

    Delayed parturition: constraint or coping mechanism in a viviparous gekkonid?

    Rock, J., 1 Ebr 2006, Yn: Journal of Zoology. 268, 4, t. 355-360

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  50. Cyhoeddwyd

    Delineating and mapping riparian areas for ecosystem service assessment

    de Sosa, L. L., Glanville, H. C., Marshall, M. R., Abood, S. A., Williams, A. P. & Jones, D. L., Maw 2018, Yn: ECOHYDROLOGY. 11, 2, e1928.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  51. Cyhoeddwyd

    Delineating the position of rad4(+)/cut5(+) within the DNA-structure checkpoint pathways in Schizosaccharomyces pombe.

    Caspari, T. M., Harris, S., Kemplen, C., Caspari, T., Chan, C., Lindsay, H. D., Poitelea, M., Carr, A. M. & Price, C., 1 Medi 2003, Yn: Journal of Cell Science. 116, 17, t. 3519-3529

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  52. Cyhoeddwyd

    Demographic reconstruction from ancient DNA supports rapid extinction of the great auk

    Thomas, J., Carvalho, G., Haile, J., Rawlence, N. J., Martin, M. D., Ho, S. Y., Sigfússon, A. Þ., Jósefsson, V. A., Frederiksen, M., Linnebjerg, J. F., Samaniego Castruita, J. A., Niemann, J., Sinding, M.-H. S., Sandoval-Velasco, M., Soares, A. E., Lacy, R., Barilaro, C., Best, J., Brandis, D., Cavallo, C., Elorza, M., Garrett, K. L., Groot, M., Johansson, F., Lifjeld, J. T., Nilson, G., Serjeanston, D., Sweet, P., Fuller, E., Hufthammer, A. K., Meldgaard, M., Fjeldsa, J., Shapiro, B., Hofreiter, M., Stewart, J. R., Gilbert, M. T. P. & Knapp, M., 26 Tach 2019, Yn: Elife. 8, e47509.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  53. Cyhoeddwyd

    Demography or selection on linked cultural traits or genes? Investigating the driver of low mtDNA diversity in the sperm whale using complementary mitochondrial and nuclear genome analyses

    Morin, P., Foote, A., Baker, C. S., Hancock-Hanser, B., Kaschner, K., Mate, B., Mesnick, S., Pease, V., Rosel, P. & Alexander, A., Meh 2018, Yn: Molecular Ecology. 27, 11, t. 2604-2619

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  54. Cyhoeddwyd

    Dendritic network structure and dispersal affect temporal dynamics of diversity and species persistence

    Seymour, M., Fronhofer, E. A. & Altermatt, F., Gorff 2015, Yn: Oikos. 124, 7, t. 908-916

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  55. Cyhoeddwyd

    Density Functional Theory (DFT) Investigation of the Alkyl-Alkyl Negishi Cross-Coupling Reaction Catalyzed by N-heterocyclic Carbene (NHC)-Pd Complexes.

    Chasse, G. A., Chass, G. A., O'Brien, C. J., Hadei, N., Kantchev, E. A., Mu, W. H., Fang, D. C., Hopkinsn, A. C., Csizmadia, I. G. & Organ, M. G., 20 Ebr 2009, Yn: Chemistry - A European Journal. 15, 17, t. 4281-4288

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  56. Cyhoeddwyd

    Density-dependent location and interactions of truncated APC and beta-catenin

    Wakeman, J., Davies, M. L., Roberts, G. T., Spiller, D. G. & Wakeman, J. A., 19 Chwef 2004, Yn: Oncogene. 23, 7, t. 1412-1419

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  57. Cyhoeddwyd

    Deoxynucleoside Salvage in Fission Yeast Allows Rescue of Ribonucleotide Reductase Deficiency but Not Spd1-Mediated Inhibition of Replication

    Fleck, O., Fahnøe, U., Løvschal, K. V., Gasasira Uwamahoro, M.-F., Marinova, I. N., Kragelund, B. B., Carr, A. M., Hartsuiker, E., Holmberg, C. & Nielsen, O., 25 Ebr 2017, Yn: Genes. 8, 5, 14 t., 128.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  58. Cyhoeddwyd

    Dependence of rainfall-runoff model performance on calibration conditions under changing climatic conditions

    Jahanshahi, A., Booij, M. & Patil, S., Maw 2025, Yn: Hydrological Sciences Journal. 70, 4, t. 581-596

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  59. Cyhoeddwyd

    Dependence of rainfall-runoff model transferability on climate conditions in Iran

    Jahanshahi, A., Ghazanchaei, Z., Navari, M., Goharian, E., Patil, S. & Zhang, Y., 12 Maw 2022, Yn: Hydrological Sciences Journal. 67, 4, t. 564-587 24 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  60. Cyhoeddwyd

    Dependence of thermal desorption method for profiling volatile organic compound (VOC) emissions from soil

    Brown, R. W., Mayser, J. P., Widdowson, C., Chadwick, D. R. & Jones, D. L., 1 Medi 2021, Yn: Soil Biology and Biochemistry. 160, 108313.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  61. Cyhoeddwyd

    Depletion of MHC supertype during domestication can compromise immunocompetence

    Smallbone, W., Ellison, A., Poulton, S., van Oosterhout, C. & Cable, J., Chwef 2021, Yn: Molecular Ecology. 30, 3, t. 736-746

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  62. Cyhoeddwyd

    Deposition and characterisation by surface plasmon resonance of Langmuir-Blodgett monolayers of three macrocyclic conjugated tetrapyrrole compounds exposed to chlorine gas

    Honeybourne, C. L., Portus, D., Ratcliffe, N. M., Richardson, T. & Ashwell, G. J., 1 Chwef 2002, Yn: Polish Journal of Chemistry. 76, 2-3, t. 367-376

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  63. Cyhoeddwyd

    Deposition of Ag and Ag-Au Nanocrystalline Films With Tunable Conductivity At The Water-Toluene Interface

    Stansfield, G., Johnston, H., Baxter, S. & Prabhakar, J. T., 2018, Yn: RSC Advances. 8, t. 6225-6230

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  64. Cyhoeddwyd

    Depositional history of the Tyne valley associated with retreat and stagnation of Late Devensian Ice Streams

    Yorke, L., Rumsby, B. T. & Chiverrell, R. C., 1 Awst 2012, Yn: Proceedings of the Geologists' Association. 123, 4, t. 608-625

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  65. Cyhoeddwyd

    Description of two new species of Mylochromis (Teleostei: Cichlidae) from Lake Malawi, Africa.

    Turner, G. F. & Howarth, J. D., 1 Ion 2001, Yn: Ichthyological Explorations of Freshwaters. 12, t. 205-212

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  66. Cyhoeddwyd

    Design and Application of a Low pH Upflow Biofilm Sulfidogenic Bioreactor for Recovering Transition Metals From Synthetic Waste Water at a Brazilian Copper Mine

    Santos, A. L. & Johnson, D. B., 30 Awst 2018, Yn: Frontiers in Microbiology. 9, 2051.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  67. Cyhoeddwyd

    Design and Operation of Empirical Manganese-Removing Bioreactors and Integration into a Composite Modular System for Remediating and Recovering Metals from Acidic Mine Waters

    Santos, A. L. & Johnson, B., 10 Mai 2021, Yn: Applied Sciences. 11, 9, 4287.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  68. E-gyhoeddi cyn argraffu

    Design and performance of the Climate Change Initiative Biomass global retrieval algorithm

    Santoro, M., Cartus, O., Quegan, S., Kay, H., Lucas, R. M., Araza, A., Herold, M., Labriere, N., Chave, J., Rosenqvist, Å., Tadono, T., Kobayashi, K., Kellndorfer, J., Avitabile, V., Brown, H., Carreiras, J., Campbell, M., Cavlovic, J., da Conceição Bispo, P., Gilani, H., Latif Khan, M., Kumar, A., Lewis, S. L., Liang, J., Mitchard, E. T. A., Pascagaza, A. M. P., Phillips, O. L., Ryan, C. M., Saikia, P., Schepaschenko, D., Sukhdeo, H., Verbeeck, H., Vieilledent, G., Wijaya, A., Willcock, S. & Martin Seifert, F., 30 Medi 2024, (E-gyhoeddi cyn argraffu) Yn: Science of Remote Sensing. 10, t. 100169 100169.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  69. Cyhoeddwyd

    Design and synthesis of HIV-1 protease inhibitors. Novel tetrahydrofuran P2/P2 '-groups interacting with Asp29/30 of the HIV-1 protease. Determination of binding from X-ray crystal structure of inhibitor protease complex

    Oscarsson, K., Lahmann, M., Lindberg, J., Kangasmetsa, J., Unge, T., Oscarson, S., Hallberg, A. & Samuelsson, B., 20 Maw 2003, Yn: Bioorganic and Medicinal Chemistry. 11, 6, t. 1107-1115

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  70. Cyhoeddwyd

    Design of radical-resistant amino acid residues: a combined theoretical and experimental investigation

    Croft, A. K., Easton, C. J. & Radom, L., 1 Ion 2003, Yn: Journal of the American Chemical Society. 125, 14, t. 4119-4124

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  71. Cyhoeddwyd

    Designing Vulnerable Zones of Nitrogen and Phosphorus Transfers to Control Water Pollution in China

    Bai, Z., Lu, J., Zhao, H., Velthof, G. L., Oenema, O., Chadwick, D., Williams, D. R., Jin, S., Liu, H., Wang, M., Strokal, M., Kroeze, M., Hu, C. & Ma, L., 30 Gorff 2018, Yn: Environmental Science and Technology.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  72. Cyhoeddwyd

    Despite high uptake efficiency, non-mycorrhizal Rumex acetosella increases available phosphorous in the rhizosphere soil, whereas Viscaria vulgaris, Plantago lanceolata and Achillea millefolium does not.

    Sandberg, J., Jones, D. L. & Fransson, A. M., 1 Hyd 2009, Yn: Nordic Journal of Botany. 27, 5, t. 444-448

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  73. Cyhoeddwyd

    Desulfosporosinus acididurans sp nov.: an acidophilic sulfate-reducing bacterium isolated from acidic sediments

    Sanchez-Andrea, I., Stams, A. J., Hedrich, S., Nancucheo, I. & Johnson, D. B., Ion 2015, Yn: Extremophiles. 19, 1, t. 39-47

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  74. Cyhoeddwyd

    Detecting macroecological patterns in bacterial communities across independent studies of global soils

    Ramirez, K. S., Knight, C. G., Hollander, M., Brearley, F. Q., Constantinides, B., Cotton, T. E. A., Creer, S., Crowther, T. W., Davison, J., Delgado-Baquerizo, M., Dorrepaal, E., Elliott, D. R., Fox, G., Griffiths, R., Hale, C., Hartman, K., Houlden, A., Jones, D., Krab, E. J., Maestre, F. T., McGuire, K. L., Monteux, S., Orr, C. H., van der Putten, W. H., Roberts, I. S., Robinson, D., Rocca, J., Rowntree, J., Schlaeppi, K., Shepherd, M., Singh, B. K., Straathof, A., Talbot, J. M., Thion, C., van der Heijden, M. & de Vries, F. T., 2018, Yn: Nature Microbiology. 3, t. 189-196 8 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  75. Cyhoeddwyd

    Detecting population structure in a high gene-flow species, Atlantic herring (Clupea harengus): direct, simultaneous evaluation of neutral vs putatively selected loci.

    Andre, C., Larsson, L. C., Laikre, L., Bekkevold, D., Brigham, J., Carvalho, G. R., Dahlgren, T. G., Hutchinson, W. F., Mariani, S., Mudde, K., Ruzzante, D. E. & Ryman, N., 1 Chwef 2011, Yn: Heredity. 106, 2, t. 270-280

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  76. Cyhoeddwyd

    Detecting successional changes in tropical forest structure using GatorEye drone-borne lidar

    Alves de Almeida, D. R., Almeyda Zambrano, A. M., Broadbent, E. N., Wendt, A. L., Foster, P., Wilkinson, B. E., Salk, C., Papa, D. D. A., Stark, S. C., Valbuena, R., Gorgens, E. B., Silva, C. A., Santin Brancalion, P. H., Fagan, M., Meli, P. & Chazdon, R., Tach 2020, Yn: Biotropica. 52, 6, t. 1155-1167 13 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  77. Cyhoeddwyd

    Detection and Identification of Species-Specific Bacteria Associated with Synanthropic Mites

    Hubert, J., Kopecký, J., Perotti, M. A., Nesvorná, M., Braig, H. R., Ságová-Marečková, M., Macovei, M. & Zurek, L., 1 Mai 2012, Yn: Microbial Ecology. 63, 4, t. 919-928

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  78. Cyhoeddwyd

    Detection of Uranium Contamination in Acacia Cell Sap by Capillary Zone Electrophoresis (CZE) Technique

    Tomos, A. D., Al-Salih, H. S., Fathi, R. A., Godbold, D. L. & Tomor, A. D., 1 Maw 2014, Yn: Journal of Natural Science Research. 4, 6, t. 40-48

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  79. Cyhoeddwyd

    Detection of aggregates in magnetic colloids.

    Fannin, P. C., Giannitsis, A. T. & Charles, S. W., 1 Tach 2000, Yn: European Physical Journal - Applied Physics. 12, 2, t. 93-98

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  80. Cyhoeddwyd

    Detection of introduced and resident marine species using environmental DNA metabarcoding of sediment and water

    Holman, L. E., de Bruyn, M., Creer, S., Carvalho, G., Robidart, J. & Rius, M., 9 Awst 2019, Yn: Scientific Reports. 9, 11559.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  81. Cyhoeddwyd

    Detection of new genetic variants of Betacoronaviruses in Endemic Frugivorous Bats of Madagascar

    Razanajatovo, N. H., Nomenjanahary, L. A., Wilkinson, D. A., Razafimanahaka, J. H., Goodman, S. M., Jenkins, R. K., Jones, J. P. G. & Heraud, J., 12 Maw 2015, Yn: Virology Journal. 12, 42

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  82. Cyhoeddwyd

    Detection of novel Fibrobacter populations in landfill sites and determination of their relative abundance via quantitative PCR.

    McDonald, J. E., Lockhart, R. J., Cox, M. J., Allison, H. E. & McCarthy, A. J., 1 Mai 2008, Yn: Environmental Microbiology. 10, 5, t. 2360-2365

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  83. Cyhoeddwyd

    Detection, identification and typing of Acidithiobacillus species and strains: a review

    Nuñez, H., Covarrubias, P. C., Moya-Beltrán, A., Issotta, F., Atavales, J., Acuña, L. G., Johnson, D. B. & Quatrini, R., Medi 2016, Yn: Research in Microbiology. 167, 7, t. 555-567

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  84. Cyhoeddwyd

    Determinants and prediction of esterase substrate promiscuity patterns

    Martínez-Martínez, M., Coscolín, C., Santiago, G., Chow, J., Stogios, P. J., Bargiela, R., Gertler, C., Navarro-Fernández, J., Bollinger, A., Thies, S., Méndez-García, C., Popovic, A., Brown, G., Chernikova, T., García-Moyano, A., Bjerga, G. E. K., Perez-Garcia, P., Hai, T., del Pozo, M. V., Stokke, R., Steen, I. H., Cui, H., Xu, X., Nocek, B., Alcaide, M., Disasto, M., Mesa, V., Pelaez, A. I., Sanchez, J., Buchholz, P. C. F., Pleiss, J., Fernández-Guerra, A., Glockner, F. O., Golyshina, O., Yakimov, M. M., Savchenko, A., Jaeger, K.-E., Yakunin, A. F., Streit, W. R., Golyshin, P., Guallar, V. & Ferrer, M., 2018, Yn: ACS Chemical Biology. 13, 1, t. 225-234

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  85. Cyhoeddwyd

    Determination of ED50 values for praziquantel in praziquantel-resistant and -susceptible Schistosoma mansoni isolates.

    Cioli, D., Botros, S. S., Wheatcroft-Francklow, K., Mbaye, A., Southgate, V., Tchuente, L. A., Pica-Mattoccia, L., Troiani, A. R., Seif el-Din, S. H., Sabra, A. N., Albin, J., Engels, D. & Doenhoff, M. J., 1 Gorff 2004, Yn: International Journal for Parasitology. 34, 8, t. 979-987

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  86. Cyhoeddwyd

    Determination of poly-β-hydroxyalkanoate in Peat

    Dowrick, D., Yusoff, F., Gough, R. & Freeman, C., Chwef 2017, Yn: Communications in Soil Science and Plant Analysis. 48, 5, t. 576-580

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  87. Cyhoeddwyd

    Determination of the radius of nano-particles in a magnetic fluid by means of a constant frequency measurement technique.

    Fannin, P. C., Scaife, B. K., Giannitsis, A. T. & Charles, S. W., 21 Meh 2002, Yn: Journal of Physics D - Applied Physics. 35, 12, t. 1305-1310

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  88. Cyhoeddwyd

    Determining maximum entropy in 3D remote sensing height distributions and using it to improve aboveground biomass modelling via stratification

    Adnan, S., Maltamo, M., Mehtätalo, L., Ammaturo, R. N. L., Packalen, P. & Valbuena, R., Gorff 2021, Yn: Remote Sensing of Environment. 260, t. 112464 1 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  89. Cyhoeddwyd

    Determining patterns in the composition of dissolved organic matter in fresh waters according to land use and management

    Yates, C. A., Johnes, P. J., Brailsford, F. L., Evans, C. D., Evershed, R. P., Glanville, H. C., Jones, D. L., Lloyd, C. E. M., Marshall, M. R. & Owen, A. T., Mai 2023, Yn: Biogeochemistry. 164, 1, t. 143-162 20 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  90. Cyhoeddwyd

    Determining the influence of environmental and edaphic factors on the fate of the nitrification inhibitors DCD and DMPP in soil

    Guardia, G., Marsden, K., Vallejo, A., Jones, D. & Chadwick, D., 15 Mai 2018, Yn: Science of the Total Environment. 624, t. 1202-1212

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  91. Cyhoeddwyd

    Determining the physical properties of flax fibre for industrial applications: the influence of agronomic practice.

    Norton, A. J., Bennett, S. J., Hughes, M., Dimmock, J. P., Wright, D., Newman, G., Harris, I. M. & Edwards-Jones, G., 23 Meh 2006, Yn: Annals of Applied Biology. 149, 1, t. 15-25

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  92. Cyhoeddwyd

    Developing KASP Markers for Identification of Basmati Rice Varieties

    Steele, K., Quinton-Tulloch, M., Burns, M. & Nader, W., Ebr 2021, Yn: Food Analytical Methods. 14, 4, t. 663-673 11 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  93. Cyhoeddwyd

    Developing Skills in Second Year Biological Science Undergraduates

    Robinson, R. L. & McDonald, J. E., 1 Gorff 2014, Yn: Bioscience Education. 22, 1, t. 42-53

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  94. Cyhoeddwyd

    Developing Sustainable Collaboration: learning from theory and practice

    Knight, T. M., Knight T., [. V., Smith J., [. V. & Cropper, S., 1 Ion 2001, Yn: Primary Healthcare Research and Development. 2, t. 139-148

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  95. Cyhoeddwyd

    Developing farm-specific marginal abatement cost curves: Cost-effective greenhouse gas mitigation opportunities in sheep farming systems

    Jones, A. K., Jones, D. L. & Cross, P., 12 Medi 2015, Yn: Land Use Policy. 49, t. 394-403

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  96. Cyhoeddwyd

    Developing silvopastoral systems and their effects on diversity of fauna.

    McAdam, J. H., Sibbald, A. R., Teklehaimanot, Z. & Eason, W. R., 1 Mai 2007, Yn: Agroforestry Systems. 70, 1, t. 81-89

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  97. Cyhoeddwyd

    Development and Application of Microsatellites in Carcinus maenas: Genetic Differentiation between Northern and Central Portuguese Populations

    Pascoal, S., Creer, S., Taylor, M. I., Queiroga, H., Carvalho, G. & Mendo, S., 30 Medi 2009, Yn: PLoS ONE. 4, 9, t. e7268

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  98. Cyhoeddwyd

    Development and application of an inhalation bioaccessibility method (IBM) for lead in the PM10 size fraction of soil

    Boisa, N., Elom, N., Dean, J. R., Deary, M. E., Bird, G. & Entwistle, J. A., 1 Medi 2014, Yn: Environment International. 70, t. 132–142

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  99. Cyhoeddwyd

    Development and application of biotechnologies in the metal mining industry

    Johnson, D. B., 1 Tach 2013, Yn: Environmental Science and Pollution Research. 20, 11, t. 7768-7776

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  100. Cyhoeddwyd

    Development and use of a typology of mapping tools to assess their fitness for supporting management of ecosystem service provision

    Pagella, T. F. & Sinclair, F. L., Maw 2014, Yn: Landscape Ecology. 29, 3, t. 383-399

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  101. Cyhoeddwyd

    Development and validation of a duplex RT-qPCR assay for norovirus quantification in wastewater samples

    Alex-Sanders, N., Woodhall, N., Farkas, K., Scott, G., Jones, D. L. & Walker, D. I., 1 Tach 2023, Yn: Journal of Virological Methods. 321, 114804.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid