Porth Ymchwil

Ysgol Gwyddorau Amgylcheddol a Naturiol

4801 - 4850 o blith 5,646Maint y tudalen: 50
Trefnu yn ôl: Primeiro autor
  1. Cyhoeddwyd

    Facile self-assembly and stabilization of metal oxide nanoparticles

    Charbonneau, C., Holliman, P. J., Davies, M. L., Watson, T. M. & Worsley, D. A., 3 Rhag 2014, Yn: Journal of Colloid and Interface Science. 442, t. 110-119

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

  2. Heb ei Gyhoeddi
  3. Cyhoeddwyd

    CD1b-restricted GEM T cell responses are modulated by Mycobacterium tuberculosis mycolic acid meromycolate chains

    Chancellor, A., Tocheva, A. S., Cave-Ayland, C., Tezera, L., White, A., Al-Dulayymi, J., Bridgeman, J. S., Tews, I., Williams, S., Lissin, N. M., Tebruegge, M., Marshall, B., Sharpe, S., Elliott, T., Skylaris, C-K., Essex, J. W., Baird, M., Gadola, S., Elkington, P. & Mansour, S., 19 Rhag 2017, Yn: PNAS. 114, 51, t. E10956-E10964

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

  4. Cyhoeddwyd

    Modified Hederagenin Derivatives Demonstrate Ex Vivo Anthelmintic Activity against Fasciola hepatica

    Chakroborty, A., Pritchard, D., Bouillon, M., Cervi, A., Kraehenbuehl, R., Wild, C., Fenn, C., Holdsworth, P., Capner, C., Padalino, G., Forde-Thomas, J. E., Payne, J., Smith, B. G. & Hoffmann, K., 3 Gorff 2023, Yn: Pharmaceutics. 15, 7, 1869.

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

  5. Cyhoeddwyd

    The contribution of cattle urine and dung to nitrous oxide emissions: Quantification of country specific emission factors and implications for national inventories

    Chadwick, D. R., Cardenas, L. M., Dhanoa, M. S., Donovan, N., Misselbrook, T., Williams, J. R., Thorman, R. E., McGeough, K. L., Watson, C. J., Watson, C. J., Bell, M., Anthony, S. G. & Rees, R. M., 1 Medi 2018, Yn: Science of the Total Environment. 635, t. 607-617

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

  6. Cyhoeddwyd

    Improving manure nutrient management towards sustainable agricultural intensification in China

    Chadwick, D. R., Jia, W., Tong, Y., Yu, G. H., Shen, Q. R. & Chen, Q., 1 Ebr 2015, Yn: Agriculture, Ecosystems and Environment. 209, t. 34-46

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

  7. Cyhoeddwyd

    Optimizing chamber methods for measuring nitrous oxide emissions from plot-based agricultural experiments

    Chadwick, D. R., Cardenas, L., Misselbrook, T. H., Smith, K. A., Rees, R. M., Watson, C. J., McGeough, K. L., Williams, J. R., Cloy, J. M., Thorman, R. E. & Dhanoa, M. S., 9 Ion 2014, Yn: European Journal of Soil Science. 65, 2, t. 295-307

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

  8. Cyhoeddwyd

    Partial characterisation of a colored organic metabolite isolated from cultures of Acidithiobacillus ferrooxidans grown on elemental sulfur.

    Ceskova, P., Zak, Z., Havlis, J., Johnson, D. B., Janiczek, O., Mandl, M., Ciminelli, V. S. (gol.) & Garcia Jr, O. (gol.), 1 Ion 2001, Biohydrometallurgy: Fundamentals: Technology and Sustainable Development. 2001 gol. Elsevier, t. 363-367

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

  9. Cyhoeddwyd

    Tree diversity effects on soil microbial biomass and respiration are context dependent across forest diversity experiments

    Cesarz, S., Craven, D., Auge, H., Bruelheide, H., Castagneyrol, B., Gutknecht, J., Hector, A., Jactel, H., Koricheva, J., Messier, C., Muys, B., O'Brien, M. J., Paquette, A., Ponette, Q., Potvin, C., Reich, P., Scherer-Lorenzen, M., Smith, A., Verheyen, K. & Eisenhauer, N., Mai 2022, Yn: Global Ecology and Biogeography. 31, 5, t. 872-885

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

  10. Cyhoeddwyd

    On the photoreactivity of 4,5-dithiophen-3-yl[1,3]dithiol-2-one. The first preparation of a thieno[3,4-c]dithiine

    Celli, A. M., Donati, D., Ponticelli, F., Roberts-Bleming, S. J., Kalaji, M. & Murphy, P. J., 1 Tach 2001, Yn: Organic Letters. 3, 22, t. 3573-3574

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

  11. Cyhoeddwyd

    Structure and evolutionary trace-assisted screening of a residue swapping the substrate ambiguity and chiral specificity in an esterase

    Cea-Rama, I., Coscolín, C., Katsonis, P., Bargiela, R., Golyshin, P., Lichtarge, O., Ferrer, M. & Sanz-Aparicio, J., 2021, Yn: Computational and Structural Biotechnology Journal. 19, t. 2307-2317 11 t.

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

  12. Cyhoeddwyd

    Recombinogenic Conditions Influence Partner Choice in Spontaneous Mitotic Recombination

    Cauwood, J. D., Johnson, A. L., Widger, A. & Cha, R. S., 7 Tach 2013, Yn: PLoS: Genetics. 9, 11, t. e1003931

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

  13. Cyhoeddwyd

    Draft genome sequence of the type strain of the sulfur-oxidizing acidophile, Acidithiobacillus albertensis (DSM 14366)

    Castro, M., Moya-Beltrán, A., Covarrubias, P. C., Gonzalez, M., Issotta, F., Nuñez, H., Acuña, L. G., Encina, G., Holmes, D. S., Johnson, D. B. & Quatrini, R., 15 Rhag 2017, Yn: Standards in genomic sciences. 12, t. 77

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

  14. Cyhoeddwyd

    The aerobic respiratory chain of the acidophilic archaeon Ferroplasma acidiphilum: A membrane-bound complex oxidizing ferrous iron

    Castelle, C. J., Roger, M., Bauzan, M., Brugna, M., Lignon, S., Nimtz, M., Golyshina, O. V., Giudici-Orticoni, M. T. & Guiral, M., 18 Ebr 2015, Yn: Biochimica et Biophysica Acta (BBA) - Bioenergetics. 8, t. 717-729

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

  15. Cyhoeddwyd

    The drinking water contaminant dibromoacetonitrile delays G1-S transition and suppresses Chk1 activation at broken replication forks

    Caspari, T., Dyer, J., Fenner, N., Dunn, C. & Freeman, C., 2017, Yn: Scientific Reports. 7, 12730.

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

  16. Cyhoeddwyd

    Two Distinct Cdc2 Pools Regulate Cell Cycle Progression and the DNA Damage Response in the Fission Yeast S.pombe

    Caspari, T. M., Caspari, T. & Hilditch, V., 1 Gorff 2015, Yn: PLoS ONE.

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

  17. Cyhoeddwyd

    Cop9/signalosome subunits and Pcu4 regulate ribonucleotide reductase by both checkpoint-dependent and -independent mechanisms.

    Caspari, T. M., Liu, C., Powell, K. A., Mundt, K., Wu, L. J., Carr, A. M. & Caspari, T., 1 Mai 2003, Yn: Genes and Development. 17, 9, t. 1130-1140

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

  18. Cyhoeddwyd

    Analysis of the fission yeast checkpoint Rad proteins

    Caspari, T. M., Caspari, T., Davies, C. & Carr, A. M., 1 Ion 2000, Yn: Cold Spring Harbor Symposia on Quantitative Biology. 65, t. 451-456

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

  19. Cyhoeddwyd

    Checkpoints: How to activate p53

    Caspari, T. M. & Caspari, T., 20 Ebr 2000, Yn: Current Biology. 10, 8, t. R315-R317

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

  20. Cyhoeddwyd

    Checkpoint Control Halting the Cell Cycle.

    Caspari, T. M., Carr, A. M., Caspari, T. & Egel, R. (gol.), 1 Ion 2004, The Molecular Biology of Schizosaccharomyces pombe. 2004 gol. Springer, t. 41-56

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

  21. 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  22. Cyhoeddwyd

    Cell division defects of Schizosaccharomyces pombe liz1(-) mutants are caused by defects in pantothenate uptake.

    Caspari, T. M., Stolz, J., Caspari, T., Carr, A. M. & Sauer, N., 1 Ebr 2004, Yn: Eukaryotic Cell. 3, 2, t. 406-412

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

  23. Cyhoeddwyd

    Characterization of Schizosaccharomyces pombe Hus1: a PCNA-related proteinthat associates with Rad1 and Rad9.

    Caspari, T. M., Caspari, T., Dahlen, M., Kanter-Smoler, G., Lindsay, H. D., Hofmann, K., Papadimitriou, K., Sunnerhagen, P. & Carr, A. M., 1 Chwef 2000, Yn: Molecular and Cellular Biology. 20, 4, t. 1254-1262

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

  24. Cyhoeddwyd

    Heat induction of a novel Rad9 variant from a cryptic translation initiation site reduces mitotic commitment

    Caspari, T. M., Janes, S., Schmidt, U., Garrido, K. A., Ney, N., Concilio, S., Zekri, M. & Caspari, T., 1 Hyd 2012, Yn: Journal of Cell Science. 125, 19, t. 4487-4497

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

  25. Cyhoeddwyd

    Hyperactive Cdc2 kinase interferes with the response to broken replication forks by trapping S.pombe Crb2 in its mitotic T215 phosphorylated state

    Caspari, T. M., Saeyd, S. A., Ewert-Krzemieniewska, K., Liu, B. & Caspari, T., 26 Mai 2014, Yn: Nucleic Acids Research. 42, 12, t. 7734-7747

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

  26. Cyhoeddwyd

    Checkpoints: How to flag up double-strand breaks

    Caspari, T. M., Caspari, T. & Carr, A. M., 5 Chwef 2002, Yn: Current Biology. 12, 3, t. R105-R107

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

  27. Cyhoeddwyd

    Pantothenate uptake and nuclear division in Schizosaccharomyces pombe.

    Caspari, T. M., Stolz, J., Caspari, T. & Sauer, N., 1 Chwef 2002, Yn: Yeast. 19, 3, t. 283

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

  28. Cyhoeddwyd

    When heat casts a spell on the DNA damage checkpoints

    Caspari, T. M., Turner, T. & Caspari, T., 12 Maw 2014, Yn: Open Biology. 2014, 2, t. 140008

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

  29. Cyhoeddwyd

    The Rad4TopBP1 ATR-Activation Domain Functions in G1/S Phase in a Chromatin-Dependent Manner

    Caspari, T. M., Lin, S. J., Wardlaw, C. P., Morishita, T., Miyabe, I., Chahwan, C., Caspari, T., Schmidt, U., Carr, A. M. & Garcia, V., 28 Meh 2012, Yn: PLOS Genetics. 8, 6, t. e1002801

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

  30. Cyhoeddwyd

    Cdc2-cyclin B kinase activity links Crb2 and Rqh1-topoisomerase III.

    Caspari, T. M., Murray, J. M. & Carr, A. M., 1 Mai 2002, Yn: Genes and Development. 16, 10, t. 1195-1208

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

  31. Cyhoeddwyd

    A novel stereoselective route to ?-butyrolactones

    Casey, M., Manage, A. C. & Murphy, P. J., 11 Chwef 1992, Yn: Tetrahedron Letters. 33, 7, t. 965-968 4 t.

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

  32. Cyhoeddwyd

    Highly stereoselective conjugate additions of heteroaryl alkyl sulfoxides

    Casey, M., Gairns, R. S., Geraghty, G. M., Kelly, C. J., Murphy, P. J. & Walker, A. J., 2000, Yn: Synlett. 2000, 12, t. 1721-1724 4 t.

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

  33. Cyhoeddwyd

    Book Review: Handbook of Venoms and Toxins of Reptiles

    Casewell, N. R. & Caewell, N. R., 1 Chwef 2011, Yn: Herpetological Bulletin. 115, t. 39-41

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

  34. Cyhoeddwyd

    Macro- and micro-geographic variation in pantophysin (Panl) allele frequencies in NE Atlantic cod Gadus morhua

    Case, R. A., Hutchinson, W. F., Hauser, L., Van Oosterhout, C. & Carvalho, G. R., 11 Hyd 2005, Yn: Marine Ecology Progress Series. 301, t. 267-278

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

  35. Cyhoeddwyd

    Guiding principles for rewilding

    Carver, S., Convery, I., Hawkins, S., Beyers, R., Eagle, A., Kun, Z., Van Maanen, E., Cao, Y., Fisher, M., Edwards, S. R., Nelson, C., Gann, G. D., Shurter, S., Aguilar, K., Andrade, A., Ripple, W. J., Davis, J., Sinclair, A., Berkoff, M., Noss, R., Foreman, D., Pettersson, H., Root-Bernstein, M., Svenning, J-C., Taylor, P., Wynne-Jones, S., Featherstone, A. W., Flojgaard, C., Stanley-Price, M., Navarro, L. M., Aykroyd, T., Parfitt, A. & Soule, M., Rhag 2021, Yn: Conservation Biology. 35, 6, t. 1882-1893

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

  36. Cyhoeddwyd

    Fish, genes and genomes: contributions to ecology, evolution and management

    Carvalho, G., Hauser, L., Martinsohn, J. & Naish, K., 5 Rhag 2016, Yn: Journal of Fish Biology. 89, 6, t. 2471-2478

    Allbwn ymchwil: Cyfraniad at gyfnodolyn › Rhifyn Arbennig › adolygiad gan gymheiriaid

  37. Cyhoeddwyd

    Ecological community dynamics: 20 years of moth sampling reveals the importance of generalists for community stability

    Carvalho, G., Seymour, M., Brown, N., Wood, C., Goertz, S. & de Bruyn, M., 1 Rhag 2020, Yn: Basic and Applied Ecology. 49, t. 34-44 10 t.

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

  38. Cyhoeddwyd

    Population genetic structure and history of the long-tailed hake, Macruronus magellanicus, in the SW Atlantic as revealed by mtDNA RFLP analysis

    Carvalho, G. R. & D'Amato, M. E., 1 Ebr 2005, Yn: ICES Journal of Marine Science. 62, 2, t. 247-255

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

  39. Cyhoeddwyd

    Yurii Petrovich Altukhov 1936-2006 - Obituary

    Carvalho, G. R. & Thorpe, J., 1 Chwef 2007, Yn: Journal of Fish Biology. 70, 2, t. 331-333

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

  40. 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

  41. Cyhoeddwyd

    Combination of genetics and spatial modelling highlights the sensitivity of cod (Gadus morhua) population diversity in the North Sea to distributions of fishing

    Carvalho, G. R., Heath, M. R., Culling, M. A., Crozier, W. W., Fox, C. J., Gurney, W. S., Hutchinson, W. F., Nielsen, E. E., O'Sullivan, M., Preedy, K. F., Righton, D. A., Speirs, D. C., Taylor, M. I. & Wright, P. J., 17 Tach 2013, Yn: ICES Journal of Marine Science. 71, 4, t. 794-807

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

  42. Cyhoeddwyd

    Measuring genetic variation in wild populations: from molecular markers to adaptive traits.

    Carvalho, G. R., Van Oosterhout, C., Hauser, L., Magurran, A. E., Hails, R. (gol.), Beringer, J. (gol.) & Godfray, H. C. (gol.), 1 Ion 2002, Genes in the Environment. 2002 gol. Cambridge University Press, t. 91-111

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

  43. Cyhoeddwyd

    Mechanical excavation of wetland habitat failed to eradicate invasive American red swamp crayfish (Procambarus clarkii) in Malta

    Caruana, A., Camilleri, B., Farrugia, L. & Jones, J. P. G., 2024, Yn: Ecological Solutions and Evidence. 5, 2, e12325.

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

  44. Cyhoeddwyd

    Synthetic analogues of cyanobacterial alkaloid cylindrospermopsin and their toxicological activity

    Cartmell, C., Evans, D., Elwood, J. ML., Fituri, H., Murphy, P., Caspari, T., Poniedziałekc, B. & Rzymskic, P., Hyd 2017, Yn: Toxicology in Vitro. 44, t. 172-181

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

  45. Cyhoeddwyd

    Junior scientists are sceptical of sceptics of open access: a reply to Agrawal

    Carter, A. J., Horrocks, N. P. C., Huchard, E., Logan, C. J., Lukas, D., MacLeod, K. J., Marshall, H. H., Peck, H. L., Sanderson, J. L. & Sorensen, M. C., 1 Meh 2014, Yn: TRENDS IN PLANT SCIENCE. 19, 6, t. 339-340

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

  46. Cyhoeddwyd

    Combining targeted grass traits with red clover improves grassland performance and reduces need for nitrogen fertilisation

    Carswell, A., Rafael Sanchez-Rodriguez, A., Saunders, K., le Cocq, K., Shaw, R., Cotton, J., Zhang, Y., Evans, J., Chadwick, D. R., Jones, D. L. & Misselbrook, T., 1 Chwef 2022, Yn: European Journal of Agronomy. 133, 126433.

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

  47. Cyhoeddwyd

    Assessing the benefits and wider costs of different N fertilisers for grassland agriculture

    Carswell, A., Shaw, R., Hunt, J., Rafael Sanchez-Rodriguez, A., Saunders, K., Cotton, J., Hill, P. W., Chadwick, D. R., Jones, D. L. & Misselbrook, T. H., 16 Ebr 2019, Yn: Archives of Agronomy and Soil Science . 65, 5, t. 625-639

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

  48. Cyhoeddwyd

    Impact of microbial activity on the leaching of soluble N forms in soil

    Carswell, A. M., Hill, P., Jones, D., Blackwell, M. S. A., Johnes, P. J., Chadwick, D. & Dixon, E. R., Ion 2018, Yn: Biology and Fertility of Soils. 54, 1, t. 21-25

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

  49. Cyhoeddwyd

    Short-term biotic removal of dissolved organic nitrogen (DON) compounds from soil solution and subsequent mineralisation in contrasting grassland soils

    Carswell, A. M., Hill, P. W., Jones, D., Blackwell, M. S. A., Johnes, P. & Chadwick, D. R., 1 Mai 2016, Yn: Soil Biology and Biochemistry. 96, t. 82-85

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

  50. Cyhoeddwyd

    Ecological Speciation Promoted by Divergent Regulation of Functional Genes Within African Cichlid Fishes

    Carruthers, M., Edgley, D. E., Saxon, A. D., Gabagambi, N. P., Shechonge, A., Miska, E. A., Durbin, R., Bridle, J. R., Turner, G. F. & Genner, M. J., Tach 2022, Yn: Molecular Biology and Evolution. 39, 11

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

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