Ysgol Gwyddorau Amgylcheddol a Naturiol
- Cyhoeddwyd
Mre11 exonuclease activity removes the chain-terminating nucleoside analog gemcitabine from the nascent strand during DNA replication
Böckemeier, L., Kraehenbuehl, R., Keszthelyi, A., Gasasira, M. U., Vernon, E., Beardmore, R., Broberg Vågbø, C., Chaplin, D., Collins, S., Krokan, H. E., Lambert, S. A. E., Paisz, B. & Hartsuiker, E., 29 Mai 2020, Yn: Science Advances. 6, 22, 9 t., eaaz4126.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multi Locus Sequence Typing scheme for Acidithiobacillus caldus strain evaluation and differentiation
Nuñez, H., Loyola, D., Cárdenas, J. P., Holmes, D. S., Johnson, D. & Quantrini, R., Tach 2014, Yn: Research in Microbiology. 165, 9, t. 735-742Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multi-biomarker approach for estimating population size in a national-scale wastewater-based epidemiology study
Kasprzyk-Hordern, B., Jagadeesan, K., Sims, N., Farkas, K., Proctor, K., Bagnall, J., Robertson, M., Jones, D. L. & Wade, M. J., 1 Ion 2025, Yn: Water research. 268, Pt A, t. 122527Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multi-factor normalisation of viral counts from wastewater improves the detection accuracy of viral disease in the community
Pellett, C., Farkas, K., Williams, R., Wade, M. J., Weightman, A. J., Jameson, E., Cross, G. & Jones, D. L., 5 Tach 2024, Yn: Environmental Technology & Innovation. 36, 103720.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multi-locus phylogeny and species delimitation of Australo-Papuan blacksnakes(Pseudechis Wagler, 1830: Elapidae: Serpentes)
Maddock, S., Childerstone, A., Fry, B. G., Williams, D. J., Barlow, A. & Wüster, W., 1 Chwef 2017, Yn: Molecular Phylogenetics and Evolution. 107, February, t. 48-55Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multi-scale influences on Escherichia coli concentrations in shellfish: From catchment to estuary
Malham, S., Taft, H., Farkas, K., Ladd, C., Seymour, M., Robins, P., Jones, D. L., McDonald, J., Le Vay, L. & Jones, L., 1 Chwef 2025, Yn: Environmental Pollution. 125476.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multidisciplinarity in an uncertain space.
Brook, R. M., 1 Ion 2005.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- Cyhoeddwyd
Multidrug Resistance and High Prevalence of class 1 Integrons in Escherichia coli Isolated from Irrigation Water and Vegetables in Parts of Nsukka and Enugu, Nigeria
Chigor, C. B., Ibangha, I.-A. I., Onuora, V. C., Omotosho, O. E., Chernikova, T., Chigor, V. N. & Golyshin, P., 1 Ebr 2017, Yn: Faseb Journal. 31, S1, 777.22.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Crynodeb Cyfarfod › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multifunctional properties of Z-beta-(N-hexadecyl-4-quinolinium)-alpha-cyano-4-styryldicyanomethanide: a molecular rectifier, optically non-linear dye, and ammonia sensor
Ashwell, G. J. & Paxton, G. A., 1 Ion 2002, Yn: Australian Journal of Chemistry. 55, 3, t. 199-204Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multifunctional thermally transitioning oligopeptides prepared by ring-opening metathesis polymerization
Roberts, S. K., Roberts, K. S., Chilkoti, A. & Setton, L. A., 1 Ion 2007, Yn: Biomacromolecules. 8, 8, t. 2618-2621Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multilevel comparison of Indian Naja venoms and their cross-reactivity with Indian polyvalent antivenoms
Deka, A., Bhatia, S., Santra, V., Bharti, O., Lalremsanga, H., Martin, G., Wüster, W., Owens, J. B., Graham, S., Doley, R. & Malhotra, A., 1 Ebr 2023, Yn: Toxins. 15, 4, 24 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multilocus phylogeny, species age and biogeography of the Lesser Antillean anoles
Thorpe, R., Barlow, A., Surget-Groba, Y. & Malhotra, A., Hyd 2018, Yn: Molecular Phylogenetics and Evolution. 127, t. 682-695Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multilocus phylogeography of the brown-spotted pitviper Protobothrops mucrosquamatus (Reptilia: Serpentes: Viperidae) sheds a new light on the diversification pattern in Asia
Guo, P., Liu, Q., Zhu, F., Zhong, G. H., Che, J., Wang, P., Xie, Y. L., Murphy, R. W. & Malhotra, A., Ebr 2019, Yn: Molecular Phylogenetics and Evolution. 133, t. 82-91Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multilocus sequence typing provides insights into the population structure and evolutionary potential of Brenneria goodwinii, associated with acute oak decline
Kaczmarek, M., Mullett, M. S., McDonald, J. & Denman, S., 1 Meh 2017, Yn: PLoS ONE. 12, 6, e0178390.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multimodal Capstone Project, Biosciences
Winder, I. C., 18 Ebr 2024, Multimodal Learning: A Practitioner Guide. Advance HE, t. 25-26 2 t.Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Cyfraniad Pennod Arall › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multimodal correlative imaging and modelling of phosphorus uptake from soil by hyphae of mycorrhizal fungi
Keyes, S., van Veelen, A., Fletcher, D. M., Scotson, C., Koebernick, N., Petroselli, C., Williams, K., Ruiz, S., Cooper, L., Mayon, R., Duncan, S., Dumont, M., Jakobsen, I., Oldroyd, G., Tkacz, A., Poole, P., Mosselmans, F., Borca, C., Huthwelker, T., Jones, D. L. & Roose, T., 1 Ebr 2022, Yn: New Phytologist. 234, 2, t. 688-703 16 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multiple causation of phylogeographical pattern as revealed by nested clade analysis of the bamboo viper (Trimeresurus stejnegeri) within Taiwan.
Creer, S., Malhotra, A., Thorpe, R. S. & Chou, W. H., 1 Awst 2001, Yn: Molecular Ecology. 10, 8, t. 1967-1981Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multiple drivers of decline in the global status of freshwater crayfish (Decapoda: Astacidea)
Richman, N., Richman, N. I., Bohm, M., Adams, S. B., Alvarez, F., Bergey, E. A., Bunn, J. S., Burnham, Q., Cordeiro, J., Coughran, J., Crandall, K. A., Dawkins, K. L., DiStefano, R. J., Doran, N. E., Edsman, L., Eversole, A. G., Fureder, L., Furse, J. M., Gherardi, F., Hamr, P., Holdich, D. M., Horwitz, P., Johnston, K., Jones, C. M., Jones, J. P., Jones, R. L., Jones, T. G., Kawai, T., Lawler, S., Lopez-Mejia, M., Miller, R. M., Padraza-Lara, C., Reynolds, J. D., Richardson, A. M., Schultz, M. B., Schuster, G. A., Sibley, P. J., Souty-Grosset, C., Taylor, C. A., Thoma, R. F., Walls, J., Walsh, T. S. & Collen, B., 5 Ion 2015, Yn: Philosophical Transactions of the Royal Society B. 370, 1662Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multiple linker Half-squarylium Dyes for Dye-Sensitized Solar Cells; Are Two Linkers Better than One?
Furnell, L. W., Kershaw, C. P., Connell, A., Holliman, P. J., Jones, E. W., Furnell, L., Kershaw, C., Davies, M. L., Gwenin, C. D., Pitak, M. B., Coles, S. J. & Cooke, G., 16 Rhag 2014, Yn: Journals of Materials Chemistry A. 3, 6, t. 2883-2894Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multiple origins of viviparity, or reversal from viviparity to oviparity? The European common lizard (Zootoca vivipara, Lacertidae) and the evolution of parity.
Surget-Groba, Y., Heulin, B., Guillaume, C. P., Puky, M., Semenov, D., Orlova, V., Kupriyanova, L., Ghira, I. & Smajda, B., 1 Ion 2006, Yn: Biological Journal of the Linnean Society. 87, 1, t. 1-11Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multiple paths to aquatic specialisation in four species of Central American Anolis lizards
Munoz, M. M., Crandell, K. E., Campbell-Staton, S. C., Fenstermacher, K., Frank, H. K., Van Middlesworth, P., Sasa, M., Losos, J. B. & Herrel, A., 26 Gorff 2015, Yn: Journal of Natural History. 49, 27-28, t. 1717-1730Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multivalent glycoconjugates as anti-pathogenic agents
Bernardi, A., Jimenez-Barbero, J., Casnati, A., De Castro, C., Darbre, T., Fieschi, F., Finne, J., Funken, H., Jaeger, K.-E., Lahmann, M., Lindhorst, T. K., Marradi, M., Messner, P., Molinaro, A., Murphy, P. V., Nativi, C., Oscarson, S., Penades, S., Peri, F., Pieters, R. J., Renaudet, O., Reymond, J.-L., Richichi, B., Rojo, J., Sansone, F., Schaeffer, C., Turnbull, W. B., Velasco-Torrijos, T., Vidal, S., Vincent, S., Wennekes, T., Zuilhof, H. & Imberty, A., 2013, Yn: Chemical Society Reviews. 42, 11, t. 4709-4727Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Multivariate analysis of infrared spectra for the prediction of the mechanical performance and dimensional stability of thermally modified wood.
Gonzalez-Pena, M. & Hale, M. D., 1 Ion 2007, 2007 gol. Unknown.Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn
- Cyhoeddwyd
Museum DNA reveals a new, potentially extinct species of rinkhals (Serpentes: Elapidae: Hemachatus) from the Eastern Highlands of Zimbabwe
Major, T., Renk, P., Reissig, J., Paijmans, J., Morris, E., Hofreiter, M., Barlow, A., Broadley, D. G. & Wüster, W., 27 Medi 2023, Yn: PLoS ONE. 18, 9, 19 t., e0291432.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Mutation in a "tesB-like" hydroxyacyl-coenzyme A-specific thioesterase gene causes hyperproduction of extracelluar polyhydroxyalkanoates by Alcanivorax orkumensis SK2.
Golyshin, P., Sabirova, J. S., Ferrer, M., Lunsdorf, H., Wray, V., Kalscheuer, R., Steinbuchel, A., Timmis, K. N. & Golyshin, P. N., 1 Rhag 2006, Yn: Journal of Bacteriology. 188, 24, t. 8452-8459Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Mutational Meltdown in Primary Endosymbionts: Selection Limits Muller's Ratchet.
Allen, J. M., Light, J. E., Perotti, M. A., Braig, H. R. & Reed, D. L., 23 Maw 2009, Yn: PLoS ONE. 4, 3, t. e4969Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Mutational analysis of the critical bases involved in activation of the AreR-regulated sigma(54)-dependent promoter in Acinetobacter sp strain ADP1.
Jones, R. M. & Williams, P. A., 1 Medi 2003, Yn: Applied and Environmental Microbiology. 69, 9, t. 5627-5635Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
My Woodland Heritage
Walmsley, J., 1 Medi 2024, Woodland Heritage Annual Journal 2024, 2024, t. 56-59 4 t.Allbwn ymchwil: Cyfraniad at gyhoeddiad arbenigol › Erthygl
- Cyhoeddwyd
Mycobacterium alvei (ω-1)-methoxy mycolic acids: Absolute stereochemistry and synthesis
Alhuwaymil, Z. S., Al-araj, I. Q. M., Dulayymi, A. R. A., Jones, A., Gates, P. J., Valero-Guillén, P. L., Baird, M. S. & Dulayymi, J. R. A., Tach 2020, Yn: Chemistry and Physics of Lipids. 233, 1 t., 104977.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Mycobacterium tuberculosis-associated synthetic mycolates differentially exert immune stimulatory adjuvant activity
Smet, M., Pollard, C., De Beuckelaer, A., Van Hoecke, L., Beken, S. V., De Koker, S., Al-Dulayymi, J. R., Huygen, K., Verschoor, J., Baird, M. & Grooten, J., 7 Medi 2016, Yn: European Journal of Immunology. 46, t. 2149-2154 6 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Mycolates of Mycobacterium tuberculosis modulate the flow of cholesterol for bacillary proliferation in murine macrophages
Vermeulen, I., Baird, M., Al-Dulayymi, J., Smet, M., Verschoor, J. & Grooten, J., 1 Ebr 2017, Yn: Journal of Lipid Research. 58, 4, t. 709-718 9 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Mycolyl arabino glycerols from synthetic mycolic acids
Mohammed, M. O., Baird, M. S. & Al-Dulayymi, J., 16 Ion 2015, Yn: Tetrahedron Letters. 56, 23, t. 3268–3272Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Mycorrhizae.
Godbold, D. L., Burley, J. (Golygydd), Evans, J. (Golygydd) & Youngquist, J. A. (Golygydd), 1 Ion 2004, Encyclopedia of forest sciences. 2004 gol. Elsevier, t. 1663-1640Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Mycorrhizal hyphal turnover as a dominant process for carbon input into soil organic matter.
Godbold, D. L., Hoosbeek, M. R., Lukac, M., Cotrufo, M. F., Janssens, I. A., Ceulemans, R., Polle, A., Velthorst, E. J., Scarascia-Mugnozza, G., De Angelis, P., Miglietta, F. & Peressotti, A., 1 Maw 2006, Yn: Plant and Soil. 281, 1-2, t. 15-24Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Mycorrhizas improve the absorption of non-available phosphorus by the green manure Tithonia diversifolia in poor soils
Scrase, F. M., Sinclair, F. L., Farrar, J. F., Pavinato, P. S. & Jones, D. L., Maw 2019, Yn: Rhizosphere. 9, t. 27-33 7 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Mycorrhizas.
Godbold, D. L., Sharrock, R. A., Schroth, G. (Golygydd) & Sinclair, F. L., 1 Ion 2003, Trees: crops and soil fertility: concepts and research methods. 2003 gol. CAB International, t. 271-287Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
N-15-amino sugar stable isotope probing (N-15-SIP) to trace the assimilation of fertiliser-N by soil bacterial and fungal communities
Reay, M. K., Charteris, A. F., Jones, D. L. & Evershed, R. P., Tach 2019, Yn: Soil Biology and Biochemistry. 138, 107599.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
N-2 Fixation in Feather Mosses is a Sensitive Indicator of N Deposition in Boreal Forests
Ackermann, K., Zackrisson, O., Rousk, J., Jones, D. L. & DeLuca, T. H., Medi 2012, Yn: Ecosystems. 15, 6, t. 986-998Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
N-Acetylglucosaminidase activities in wetlands: a global survey
Kang, H. J., Freeman, C., Park, S. S. & Chun, J., 1 Ion 2005, Yn: Hydrobiologia. 532, t. 103-110Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
N-carbamate protected amino acid derived guanidine organocatalysts
Al-Taie, Z. S., Anderson, J. M., Bischoff, L., Christensen, J., Coles, S. J., Froom, R., Gibbard, M. E., Jones, L. F., de Kleijne, F. F. J., Murphy, P. & Thompson, E., 4 Meh 2021, Yn: Tetrahedron. 89, 132093.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
N2 fixation and cycling in Alnus glutinosa, Betula pendula and Fagus sylvatica woodland exposed to free air CO2 enrichment
Millett, J., Godbold, D., Smith, A. R. & Grant, H., 18 Rhag 2011, Yn: Oecologia. 169, 2, t. 541-52 12 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
NEW BIS ESTERS OF IVY SAPOGENINS FOR RUMINANTS
Al-Dulayymi, J. (Dyfeisiwr), Bouillon, M. (Dyfeisiwr), Braganca, R. (Dyfeisiwr), Preskett, D. (Dyfeisiwr) & Lahmann, M. (Dyfeisiwr), 10 Hyd 2018, Rhif y patent WO/2016/193309Allbwn ymchwil: Patent
- Cyhoeddwyd
NMR study of hydroxy protons of di- and trimannosides, substructures of Man-9
Hakkarainen, B., Kenne, L., Lahmann, M., Oscarson, S. & Sandstrom, C., 1 Rhag 2007, Yn: Magnetic Resonance in Chemistry. 45, 12, t. 1076-1080Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Naja naja Reproduction
Kuttalam, S. R., Owens, J. B., Das, B., Koley, A. & Santra, V., 2 Mai 2023, Yn: Herpetological Review. 54, 1, t. 141 1 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Naming and recognition of species in participatory biodiversity inventory.
Wong, J., Lysinge, R., Kenfack, D., Healey, J. R. & Hall, J. B., 7 Ion 2002, t. 8.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- Cyhoeddwyd
Naming and recognition of species in participatory biodiversity inventory.
Wong, J., Lysinge, R., Kenfack, D., Healey, J. R., Hall, J. B. & Lawrence, A., 1 Ion 2002Allbwn ymchwil: Ffurf annhestunol › Safe Gwe / Cyhoeddiad Gwe
- Cyhoeddwyd
Nano-Sized and Filterable Bacteria and Archaea: Biodiversity and Function
Ghuneim, L.-A., Jones, D. L., Golyshin, P. & Golyshina, O., 21 Awst 2018, Yn: Frontiers in Microbiology. 9, 1971.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Nanohaloarchaea as beneficiaries of xylan degradation by haloarchaea
La Cono, V., Messina, E., Reva, O., Smedile, F., La Spada, G., Crisafi, F., Marturano, L., Miguez, N., Ferrer, M., Selivanova, E. A., Golyshina, O., Golyshin, P., Rohde, M., Krupovic, M., Merkel, A. Y., Sorokin, D. Y., Hallsworth, J. E. & Yakimov, M., Medi 2023, Yn: Microbial Biotechnology. 16, 9, t. 1803-1822 20 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Nanopore environmental DNA sequencing of catch water for estimating species composition in demersal bottom trawl fisheries
Maggini, S., Jacobsen, M. W., Urban, P., Hansen, B. K., Kielgast, J., Bekkevold, D., Jardim, E., Martinsohn, J. T., Carvalho, G., Nielsen, E. E. & Papadopulos, A. S. T., 20 Mai 2024, Yn: Environmental DNA. 6, 3, e555.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Nanosecure: Advanced nanotechnological detection and detoxification of harmful airborne substances for improved public security
Barrault, J., Bedel, L., Charikane, E., Gunnarsen, L., Gwenin, C. D., Jones, J., Lieberzeit, P., Rowley, A., Soto, T., Thollon, S., Thorstensen, B., Traberg-Borup, S. & Wright, N., 1 Hyd 2013, Yn: L'Actualité Chimique. 378-379, t. 27-34Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid