Ysgol Gwyddorau Amgylcheddol a Naturiol
- Cyhoeddwyd
Differences in sounds made by courting males of three closely related Lake Malawi cichlid species.
Amorim, M. C., Knight, M. E., Stratoudakis, Y. & Turner, G. F., 1 Tach 2004, Yn: Journal of Fish Biology. 65, 5, t. 1358-1371Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Species differences in courtship acoustic signals among five Lake Malawi cichlid species (Pseudotropheus spp.).
Amorim, M. C., Simões, J. M., Fonseca, P. J. & Turner, G. F., 1 Ebr 2008, Yn: Journal of Fish Biology. 72, 6, t. 1355-1368Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Phylogenetic and genetic variation among Fe(II)-oxidizing acidithiobacilli supports the view that these comprise multiple species with different ferrous iron oxidation pathways.
Amouric, A., Brochier-Armanet, C., Johnson, D. B., Bonnefoy, V. & Hallberg, K. B., 1 Ion 2011, Yn: Microbiology. 157, 1, t. 111-122Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
A multifaceted framework to establish the presence of meaning in non-human communication
Amphaeris, J., Blumstein, D., Shannon, G., Tenbrink, T. & Kershenbaum, A., 20 Meh 2023, Yn: Biological Reviews. 98, 6, t. 1887-1909 23 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Overlap not Gap: Understanding the Relationship between Animal Communication and Language with Prototype Theory
Amphaeris, J., Shannon, G. & Tenbrink, T., Meh 2022, Yn: Lingua. 272, 103332.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Cognitive Linguistics Support for the Evolution of Language from Animal Cognition
Amphaeris, J., Shannon, G. & Tenbrink, T., Gorff 2021.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur › adolygiad gan gymheiriaid
- Cyhoeddwyd
Remarkable interplay of redox states and conformational changes in a sterically crowded, cross-conjugated tetrathiafulvalene vinylog
Amriou, S., Perepichka, I. F., Batsanov, A. S., Bryce, M. R., Rovira, C. & Vidal-Gancedo, J., 7 Gorff 2006, Yn: Chemistry - A European Journal. 12, 21, t. 5481-5494Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Environmental contaminants of honeybee products in Uganda detected using LC-MS/MS and GC-ECD
Amulen, D. R., Spanoghe, P., Houbraken, M., Tamale, A., de Graaf, D. C., Cross, P. & Smagghe, G., 1 Meh 2017, Yn: PLoS ONE. 12, 6, t. e0178546Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Estimating the potential of beekeeping to alleviate household poverty in rural Uganda
Amulen, D. R., D’Haese, M., D'Haene, E., Okwee Acai, J., Agea, J. G., Smagghe, G. & Cross, P., 27 Maw 2019, Yn: PLoS ONE. 14, 3, t. e0214113Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
The buzz about bees and poverty alleviation: Identifying drivers and barriers of beekeeping in sub-Saharan Africa
Amulen, D. R., D’Haese, M., Ahikiriza, E., Agea, J. G., Jacobs, F. J., de Graaf, D. C., Smagghe, G. & Cross, P., 24 Chwef 2017, Yn: PLoS ONE. 12, 2, t. e0172820Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Complex target SELEX-based identification of DNA aptamers against Bungarus caeruleus venom for the detection of envenomation using a paper-based device
Anand, A., Chatterjee, B., Dhiman, A., Goel, R., Khan, E., Malhotra, A., Santra, V., Salvi, N., Bhatnagar, I., Kumar, A., Asthana, A. & Sharma, T. K., 1 Rhag 2021, Yn: Biosensors and Bioelectronics. 193, 113523.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
An investigation of the antileishmanial properties of semi-synthetic saponins
Anderson, O., Beckett, J., Briggs, C. C., Natrass, L. A., Cranston, C. F., Wilkinson, E. J., Owen, J., Williams, R. M., Loukaidis, A., Bouillon, M., Pritchard, D., Lahmann, M., Baird, M. & Denny, P. W., 1 Gorff 2020, Yn: Medicinal Chemistry. 11, 7, t. 833-842Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Cell Penetrating Peptides as a Tool for the Cellular Uptake of a Genetically Modified Nitroreductase for use in Directed Enzyme Prodrug Therapy
Anderson, S. D., Hobbs, R. J., Gwenin, V. V., Ball, P., Bennie, L. A., Coulter, J. C. & Gwenin, C. D., Rhag 2019, Yn: Journal of Functional Biomaterials.. 10, 4Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Magnetic Functionalized Nanoparticles for Biomedical, Drug Delivery and Imaging Applications
Anderson, S., Gwenin, V. & Gwenin, C., 30 Mai 2019, Yn: Nanoscale Research Letters. 14, 1, 16 t., 188.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Burning for biodiversity: highly resilient ant communities respond only to strongly contrasting fire regimes in Australia's seasonal tropics
Anderson, A. N., Ribbons, R. R., Petit, M. & Parr, C. L., 1 Hyd 2014, Yn: Journal of Applied Ecology. 51, 5, t. 1406-1413Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Reversible non-covalent derivatisation of carbon nanotubes with glycosides.
Andersson, C. H., Lahmann, M., Oscarson, S. & Grennberg, H., 1 Ion 2009, Yn: Soft Matter. 5, 14, t. 2713-2716Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Growth, production and carbon sequestration of silvopastoral systems with native timber species in the dry lowlands of Costa Rica.
Andrade, H. J., Brook, R. M. & Ibrahim, M., 1 Gorff 2008, Yn: Plant and Soil. 308, 1-2, t. 11-22Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Glycocluster design for improved avidity and selectivity in blocking human lectin/plant toxin binding to glycoproteins and cells.
Andre, S., Lahmann, M., Gabius, H. J. & Oscarson, S., 6 Rhag 2010, Yn: Molecular Pharmaceutics. 7, 6, t. 2270-2279Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- 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. 270-280Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Isotopic methods for non-destructive assessment of carbon dynamics in shrublands under long-term climate change manipulation
Andresen, L., Dominguez, M., Reinsch, S., Smith, A., Schmidt, I. K., Ambus, P., Beier, C., Boeckx, P., Bol, R. & de Dato, G., Ebr 2018, Yn: Methods in Ecology and Evolution. 9, 4, t. 866-880Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
(E)-4-[2-(bis(octadecylsulfanyl)tetrathiafulvalenyl)ethenyl]-1-methylpyridinium iodide: synthesis and characterisation of its Langmuir-Blodgett films
Andreu, R., Garin, J., Orduna, J., Ashwell, G. J., Amiri, M. A. & Hamilton, R., 3 Ebr 2002, Yn: Thin Solid Films. 407, 1-2, t. 236-239Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Governing Ancestral Land in Madagascar: Have Policy Reforms Contributed to Social Justice?
Andriamarovololona, M. M., Ferguson, B., Gardner, C. J., Andriamarovolonona, M. M., Healy, T., Muttenzer, F., Smith, S. M., Hockley, N., Gingembre, M., Sowman, M. (Golygydd) & Wynberg, R. (Golygydd), 11 Chwef 2014, Governance for Justice and Environmental Sustainability: Lessons across Natural Resource Sectors in Sub-Saharan Africa. 2014 gol. Routledge, t. 63-93Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
A new record and range extension for the endangered gecko Paroedura masobe Nussbaum & Raxworthy, 1994 from the highly disturbed forest of Betaikankana, eastern Madagascar.
Andriantsimanarilafy, R., Randrianantoandro, J., Vences, M. & Cameron, A., 11 Maw 2021, Yn: Herpetology Notes. 14, t. 513-516 4 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Perceived socio-economic impacts of the marbled crayfish invasion in Madagascar
Andriantsoa, R., Jones, J. P. G., Achimescu, V., Randrianarison, H., Raselimanana, M., Andriatsitohaina, M., Rasamy, J. & Lyko, F., 15 Ebr 2020, Yn: PLoS ONE. 15, 4, e0231773.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Assessing and mapping cultural ecosystem services at community level in the Colombian Amazon
Angarita-Baez, J. A., Perez-Minana, E., Beltran Vargas, J. E., Ruiz Agudelo, C. A., Perez Ortiz, A., Palacios, E. & Willcock, S., Gorff 2017, Yn: International Journal of Biodiversity Science, Ecosystem Services & Management. 13, 1, t. 280-296Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Developing the Potential of Undomesticated, Indigenous Forest Species as Cacao Companion Trees in Ghana.
Anglaaere, L. C., McDonald, M. A., Sinclair, F. L. & Cobbina, J., 1 Ion 2007.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- Cyhoeddwyd
The effect of land use systems on tree diversity: farmer preference and species composition of cocoa-based agroecosystems in Ghana.
Anglaaere, L. C., Cobbina, J., Sinclair, F. L. & McDonald, M. A., 1 Maw 2011, Yn: Agroforestry Systems. 81, 3, t. 249-265Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Albizia zygia, a shade tree for cocoa: the effects of duration of acid scarification and substrate acidity on the germination of seed.
Anim-Kwapong, G. & Teklehaimanot, Z., 1 Ion 2001, Yn: Forests, Trees and Livelihoods. 11, t. 47-55Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Nickel dithiolenes containing pendant thiophene units: precursors to dithiolene-polythiophene hybrid materials.
Anjos, T., Roberts-Bleming, S. J., Charlton, A., Robertson, N., Mount, A. R., Coles, S. J., Hursthouse, M. B., Kalaji, M. & Murphy, P. J., 1 Ion 2008, Yn: Journal of Materials Chemistry. 18, 4, t. 475-483Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Electropolymerization Studies on a Series of Thiophene-Substituted 1,3-Dithiole-2-ones: Solid-State Preparation of a Novel TTF-Derivatized Polythiophene.
Anjos, T., Charlton, A., Coles, S. J., Croft, A. K., Hursthouse, M. B., Kalaji, M., Murphy, P. J. & Roberts-Bleming, S. J., 14 Ebr 2009, Yn: Macromolecules. 42, 7, t. 2505-2515Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Propiedades electroquímicas y espectroscópicas de los ditieniletilenos y sus polímeros
Anjos, T., Altaie, Z., Roberts-Bleming, S. J., Kalaji, M. & Murphy, P., 2022, Yn: Revista de Ingenieria y Tecnologia Educativa. 5, 1, t. 41-55Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Madagascar's extraordinary biodiversity: Evolution, distribution, and use
Antonelli, A., Smith, R. J., Perrigo, A. L., Crottini, A., Hackel, J., Testo, W., Farooq, H., Torres Jiménez, M. F., Andela, N., Andermann, T., Andriamanohera, A. M., Andriambololonera, S., Bachman, S. P., Bacon, C. D., Baker, W. J., Belluardo, F., Birkinshaw, C., Borrell, J. S., Cable, S., Canales, N. A., Carrillo, J. D., Clegg, R., Clubbe, C., Cooke, R. S. C., Damasco, G., Dhanda, S., Edler, D., Faurby, S., de Lima Ferreira, P., Fisher, B. L., Forest, F., Gardiner, L. M., Goodman, S. M., Grace, O. M., Guedes, T. B., Henniges, M. C., Hill, R., Lehmann, C. E. R., Lowry, P. P., Marline, L., Matos-Maraví, P., Moat, J., Neves, B., Nogueira, M. G. C., Onstein, R. E., Papadopulos, A. S. T., Perez-Escobar, O. A., Phelps, L. N., Phillipson, P. B., Pironon, S., Przelomska, N. A. S., Rabarimanarivo, M., Rabehevitra, D., Raharimampionona, J., Rajaonah, M. T., Rajaonary, F., Rajaovelona, L. R., Rakotoarinivo, M., Rakotoarisoa, A. A., Rakotoarisoa, S. E., Rakotomalala, H. N., Rakotonasolo, F., Ralaiveloarisoa, B. A., Ramirez-Herranz, M., Randriamamonjy, J. E. N., Randriamboavonjy, T., Randrianasolo, V., Rasolohery, A., Ratsifandrihamanana, A. N., Ravololomanana, N., Razafiniary, V., Razanajatovo, H., Razanatsoa, E., Rivers, M., Sayol, F., Silvestro, D., Vorontsova, M. S., Walker, K., Walker, B. E., Wilkin, P., Williams, J., Ziegler, T., Zizka, A. & Ralimanana, H., 2 Rhag 2022, Yn: Science. 378, 6623, eabf0869.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Fifty important research questions in microbial ecology
Antwis, R. E., Griffiths, S. M., Harrison, X. A., Aranega-Bou, P., Arce, A., Bettridge, A. S., Brailsford, F., de Menezes, A., Devaynes, A., Forbes, K. M., Fry, E. L., Goodhead, I., Haskell, E., Heys, C., James, C., Johnston, S. R., Lewis, G. R., Lewis, Z., Macey, M. C., McCarthy, A., McDonald, J., Mejia-Florez, N. L., O'Brien, D., Orland, C., Pautasso, M., Reid, W. D. K., Robinson, H. A., Wilson, K. & Sutherland, W. J., Mai 2017, Yn: Fems Microbiology Ecology. 93, 5, fix044.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Analysis of milk composition results.
Ap Dewi, I., 1 Ion 2002, 2002 gol. Unknown.Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn
- Cyhoeddwyd
Genetic parameters of weights, ultrasonic muscle and fat depths, maternal effects and reproductive traits in Welsh Mountain sheep
Ap Dewi, I., Saatci, M. & Ulutas, Z., 1 Meh 2002, Yn: Animal Science. 74, 3, t. 399-408Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
A generic spreadsheet model of a disease epidemic with application to the first 100 days of the 2001 outbreak of foot-and-mouth disease in the UK
Ap Dewi, I., Molina-Flores, B. & Edwards-Jones, G., 1 Maw 2004, Yn: Veterinary Journal. 167, 2, t. 167-174Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Report of planning meeting held in Hungary.
Ap Dewi, I., 1 Ion 2001, 2001 gol. Unknown.Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn
- Cyhoeddwyd
Performance and key biogeochemical reactions in full-scale passive mine water treatment systems.
Aplin, A. C., Fabian, D., Morrison, M. I., Younger, P. L., Hallberg, K. & Johnson, D. B., 1 Gorff 2008, Yn: Geochimica et Cosmochimica Acta. 72, 12, t. A30Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Restless nights when sick: ectoparasite infections alter rest-activity cycles of diurnal fish hosts
Arapi, E., Reynolds, M., Ellison, A. & Cable, J., Maw 2024, Yn: Parasitology. 151, 3, t. 251-259 9 t.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Sulfur-enhanced reductive bioprocessing of cobalt-bearing materials for base metals recovery
Araujo Santos, A. L., Dybowska, A., Schofield, P., Herrington, R. & Johnson, B., 1 Awst 2020, Yn: Hydrometallurgy. 195, 105396.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
A comprehensive framework for assessing the accuracy and uncertainty of global above-ground biomass maps
Araza, A., de Bruin, S., Herold, M., Quegan, S., Labriere, N., Veiga, P. R., Avitabile, V., Santoro, M., Mitchard, E. T. A., Ryan, C. M., Phillips, O. L., Willcock, S., Verbeeck, H., Carreiras, J., Hein, L., Schelhaas, M.-J., Pascagaza, A. M. P., da Concecao Bispo, P., Laurin, G. V., Vieilledent, G., Slik, F., Wijaya, A., Lewis, S. L., Morel, A., Liang, J., Sukhdeo, H., Schepaschenko, D., Cavlovic, J., Gilani, H. & Lucas, R., Ebr 2022, Yn: Remote Sensing of the Environment. 272, 44 t., 112917.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Simulating the main stages of chalcopyrite leaching and bioleaching in ferrous ions solution: An electrochemical impedance study with a modified carbon paste electrode
Arena, F. A., Suegama, P. H., Bevilaqua, D., Santos, A. L., Fugivara, C. S. & Benedetti, A. V., 1 Meh 2016, Yn: Minerals Engineering. 92, t. 229-241Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Evaluating the impact of osmopriming varying with polyethylene glycol concentrations and durations on soybean
Arif, M., Jan, M. T., Mian, I. A., Khan, S. A., Hollington, P. & Harris, D., 1 Ion 2014, Yn: International Journal of Agriculture and Biology. 16, 2, t. 359-364Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Integration of biochar with animal manure and nitrogen for improving maize yields and soil properties in calcareous semi-arid agroecosystems
Arif, M., Ali, K., Jan, M. T., Shah, Z., Jones, D. & Quilliam, R. S., 15 Awst 2016, Yn: Field Crops Research. 195, t. 28-35Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Preparation of Pickering emulsions stabilized by silver nanocrystals
Armstrong, O. & Thomas, P. J., Gorff 2016.Allbwn ymchwil: Cyfraniad at gynhadledd › Murlen
- Cyhoeddwyd
The development of reintroduction biology in New Zealand and Australia
Armstrong, D. P., Moro, D., Hayward, M. W., Seddon, P. J. & Hayward, M. W. (Golygydd), 6 Tach 2015, Advances in Reintroduction Biology of Australian and New Zealand Fauna. 2015 gol. CSIRO PublishingAllbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
A one-pot route to stable Pickering emulsions featuring nanocrystalline Ag and Au†
Armstrong, O., Baxter, S., Deepak, F. L. & Thomas, P. J., 23 Maw 2020, Yn: Chemical Communications. 56, 35, t. 4801-4803Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Analysis of nanorice structure formed by hydrolysis reaction of FeCl3 with KH2PO4
Armstrong, O. & Thomas, P. J., Awst 2018.Allbwn ymchwil: Cyfraniad at gynhadledd › Murlen
- Cyhoeddwyd
Vulnerability of British farms to post-Brexit subsidy removal, and implications for intensification, extensification and land sparing.
Arnott, D., Chadwick, D., Wynne-Jones, S. & Jones, D. L., Awst 2021, Yn: Land Use Policy. 107, 104154.Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
What can management option uptake tell us about ecosystem services delivery through agri-environment schemes?
Arnott, D., Chadwick, D., Harris, I., Koj, A. & Jones, D. L., 1 Chwef 2019, Yn: Land Use Policy. 81, t. 194-208Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid