Ysgol Gwyddorau Amgylcheddol a Naturiol
- Pennod › Ymchwil › Heb ei adolygu gan gymheiriaid
- Cyhoeddwyd
Pathogen survival patterns in waste-derived composts destined for land restoration
Williamson, J. C., Holmberg, J., Nason, M. A., Tandy, S., Jones, R., Healey, J. R., Jones, D. L., Vegh, B. (gol.) & Royle, J. (gol.), 1 Ion 2006, Proceedings of Waste 2006: sustainable waste and resource management, Stratford-upon-Avon, Warwickshire. 2006 gol. The Waste Conference Limited, t. 733-738Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Pelagic cichlid fishes of Lake Malawi/Nyasa.
Turner, G. F., Robinson, R. L., Ngatunga, B. P., Shaw, P. W., Carvalho, G. R. & Coleman, R. M. (gol.), 1 Ion 2001, Cichlid Research: State of the Art. 2001 gol. University of Michigan, t. 287-302Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Pelagic cichlid fishes of Lake Malawi/Nyasa: biology, management and conservation.
Turner, G. F., Robinson, R. L., Ngatunga, B. P., Shaw, P. W., Carvalho, G. R. & Cowx, I. G. (gol.), 1 Ion 2002, Management and Ecology of Lake and Reservoir Fisheries.. 2002 gol. Blackwell, t. 353-367Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Performance of buildings: Indoor air quality
Stefanowski, B., Curling, S. & Ormondroyd, G., 21 Gorff 2017, Performance of biobased building materials. Jones, D. & Brischke, C. (gol.). 1st Edition gol. Duxford, UK: Woodhead Publishing Ltd, t. 351-365Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Physical and chemical characteristics of composted wastes can be altered to make them suitable for large scale habitat creation
Nason, M. A., Tandy, S., Williamson, J. C., Farrell, M., Healey, J. R., Jones, D. L., Vegh, B. (gol.) & Royle, J. (gol.), 1 Ion 2006, Proceedings of Waste 2006: sustainable waste and resource management, Stratford-upon-Avon, Warwickshire. 2006 gol. The Waste Conference Limited, t. 739-744Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Physiology and ecology of acidophilic microorganisms.
Johnson, D. B., Gerday, C. (gol.) & Glansdorff, N. (gol.), 1 Ion 2007, Physiology and Biochemistry of Extremophiles. 2007 gol. American Society for Microbiology, t. 257-270Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Plant extracts-mediated synthesis of silver nanoparticles for the reduction of organic dyes
Hamad, F. B., Baxter, S., Thomas, P. J. & Vanitha, P. V., 23 Tach 2018, Nanoscience. Thomas, P. J. & Revaprasadu, N. (gol.). Royal Society of Chemistry, Cyfrol 5. t. 121-131 11 t. (Specialist Periodical Report).Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Plants and the environment: land reclamation and remediation: Principles and practice
Jones, D. L., Rowe, E. C., Thomas, B. (gol.), Murphy, D. (gol.) & Murray, B. (gol.), 1 Ion 2003, Encyclopaedia of applied plant science. 2003 gol. Academic Press, t. 741-748Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Predator avoidance as a factor for size assortative shoaling and its implications for sex segregation in fish.
Croft, D. P., James, R., Krause, J., Ruckstuhl, K. (gol.) & Neuhaus, P. (gol.), 1 Ion 2006, Sexual segregation in vertebrates. 2006 gol. Cambridge University Press, t. 115-126Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Preliminary study for a flexible growth model to predict the consequences of CCF in Wales.
Pommerening, A., Wenk, G., Gadow, K. (gol.), Nagel, J. (gol.) & Saborowski, J. (gol.), 1 Ion 2002, Continuous cover forestry: assessment analysis: scenarios. 2002 gol. Kluwer Academic Publishers, t. 231-252Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Preventing grey squirrel establishment on Anglesey
Shuttleworth, C., 2021, Invasive Alien Species Colonisation Prevention: Your guide to early detection and rapid response . Robinson, N. J. & Shuttleworth, C. M. (gol.). Royal Society of Wildlife Trusts, t. 55-69Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Primatology and Evolutionary Anthropology: Dr Isabelle Winder
Winder, I. C., 3 Rhag 2020, Conversations in Human Evolution. Timbrell, L. (gol.). Oxford: Archaeopress, Cyfrol 1. t. 98-103Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Quantum hydrodynamics and a new approach to mixed quantum-classical theory.
Burghardt, I., Moller, K. B., Hughes, K. H. & Micha, D. A. (gol.), 1 Ion 2007, Quantum Dynamics of Complex Molecular Systems. 2007 gol. Springer, t. 391-422Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Quantum hydrodynamics for mixed states.
Hughes, K. H., Parry, S. M., Burghardt, I., Shalashilin, D. V. (gol.) & De Miranda, M. P. (gol.), 1 Ion 2009, Multidimensional Quantum Mechanics with Trajectories. 2009 gol. CCP, Daresbury, t. 74-76Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Re-Creating and Celebrating Place(s) in Designated Space(s): The Case of Wales
Lane, E., Pierce, S., Jones, A. & Harris, I., Awst 2015, Cultural Sustainability and Regional Development: Theories and practices of territorialisation. Dessein, J., Battaglini, E. & Horlings, L. (gol.). Abingdon: RoutledgeAllbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Re-introduction of the red squirrel into Newborough forest on the island of Anglesey, UK
Shuttleworth, C., Kenward, R. E. & Jackson, N., 2008, Global Re-Introduction Perspectives: Re-Introduction Case-Studies from Around the Globe. Soorae, P. S. (gol.). IUCN/SSC Re-introduction Specialist Group, t. 163-166Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Recent advances in venomous snake systematics.
Wuster, W., Quijada-Mascarenas, J. A., Wüster, W. & Mackessy, S. P. (gol.), 1 Ion 2009, Handbook of Venoms and Toxins of Reptiles. 2009 gol. CRC Press, t. 25-64Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Recycling of wood ash to forests in North Wales, UK.
Walmsley, J. D., Healey, J. R. & Jones, D. L., 1 Ion 2006, Proceedings of Second World Bioenergy Conference, 30 May-1 June 2006, Jönköping, Sweden. 2006 gol. Swedish Bioenergy Association, t. 347-351Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Reproductive biology, mating systems and parental care.
Turner, G. F., Robinson, R. L., Beveridge, M. C. (gol.) & McAndrew B.J., N. V. (gol.), 1 Ion 2000, Tilapias: biology and exploitation. 2000 gol. Springer, t. 32-58Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Research needs for the ecology of natural regeneration of seasonally dry tropical forests in Southeast Asia.
Hardwick, K. A., Healey, J. R., Blakesley, D., Elliott, S. (gol.), Kerby, J. (gol.), Woods, K. (gol.) & Anusarnsunthorn, V. (gol.), 1 Ion 2000, Forest Restoration for Wildlife Conservation. 2000 gol. International Tropical Timber Organisation, t. 165-180Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Responses of elevated CO2 of a short rotation, multispecies poplar plantation: the POPFACE/EUROFACE experiment.
Scarascia-Mugnozza, G., Calfapietra, C., Ceulemans, R., Gielen, B., Cotrufo, M. F., De Angelis, P., Godbold, D. L., Hoosbeek, M. R., Kull, O., Lukac, M., Marek, M., Miglietta, F., Polle, A., Raines, C., Sabatti, M., Anselmi, N., Taylor, G., Nosberger, J. (gol.), Long, S. P. (gol.), Norby, R. J. (gol.), Stitt, M. (gol.), Hendrey, G. R. (gol.) & Blum, H. (gol.), 1 Ion 2006, Managed ecosystems and CO2: case studies, processes, and perspectives. 2006 gol. Springer, t. 173-195Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Restoration of ecosystems and ecosystem services
Cameron, A., 10 Mai 2018, Ecosystem Services and Poverty Alleviation: Trade-offs and Governance. Schreckenberg, K., Mace, G. & Poudyal, M. (gol.). Oxford: Routledge, ( Routledge Studies In Ecosystem Series).Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Rhizosphere methods in agroforestry research.
Jones, D. L., Schroth, G. (gol.) & Sinclair, F., 1 Ion 2003, Trees: crops and soil fertility: concepts and research methods. 2003 gol. CAB International, t. 289-301Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Rice PPB in India and Nepal: Client-oriented plant breeding using few, carefully chosen crosses
Witcombe, J., Virk, D. & Joshi, K. D., 2019, Farmers and Plant Breeding: Current Approaches and Perspectives. Westengen, O. T. & Winge, T. (gol.). RoutledgeAllbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Role of pure and mixed cultures of gram-positive eubacteria in mineral leaching.
Johnson, D. B., Bacelar-Nicolau, P., Okibe, N., Yahya, A., Hallberg, K. B., Ciminelli, V. S. (gol.) & Garcia Jr, O. (gol.), 1 Ion 2001, Biohydrometallurgy: Fundamentals: Technology and Sustainable Development. 2001 gol. Elsevier, t. 461-470Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Root production and turnover in Populus grown under elevated CO2 using a Free Air Enrichment system POPFACE
Lukac, M., Calfapietra, C., Godbold, D. L., Horst, W. W. (gol.), Sattelmacher, B. (gol.), Schmidhalter, U. (gol.), Schubert, S. (gol.), Von Wiren, N. (gol.), Wittenmayer, L. (gol.), Schenk, M. K. (gol.), Burkert, A. (gol.), Claassen, N. (gol.) & Flessa, H. (gol.), 1 Ion 2001, Plant nutrition - food security and sustainability of agro-ecosystems through applied and basic research.. 2001 gol. Kluwer Academic Publishers, t. 688-689Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Saltation, Emergence and Non-Linear Dynamics
Winder, N. & Winder, I., 2016, Non-Linearities and System Flips : COMPLEX Final Scientific Report . Winder, N. & Liljenstrom, H. (gol.). Sigtuna: Sigtuna Foundation Press, Cyfrol 2. t. 16-29Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Sclerocarya birrea (A.Rich.) Hochst.
Hall, J. B., Oyen, L. P. (gol.) & Lemmens, R. H. (gol.), 1 Ion 2002, Precursor. PROTA Programme: Wageningen.. 2002 gol. Plant Resources of Tropical Africa, t. 127-131Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Separating the tree-soil-crop interactions in agroforestry parkland systems in sapone (Burkina faso) using WaNuLCAS.
Bayala, J., Van Noordwijk, M., Lusiana, B., Ni'matul, K., Teklehaimanot, Z., Ouedraogo, S. J., Jose, S. (gol.) & Gordon, A. M. (gol.), 1 Ion 2008, Toward Agroforestry Design: An Ecological Approach. 2008 gol. Springer, t. 285-300Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Shotgun Metagenomic Sequencing Analysis of Soft-Rot Enterobacteriaceae in Polymicrobial Communities
Doonan, J., Denman, S., McDonald, J. & Golyshin, P., 30 Tach 2016, Metagenomics. Streit, W. R. & Daniel, R. (gol.). Springer New York, Cyfrol 1539. t. 85-97 (Methods in Molecular Biology; Cyfrol 1539).Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Silvopasture
Pagella, T. & Whistance, L., 5 Gorff 2019, The Agroforestry Handbook: Agroforestry for the UK. Raskin, B. & Osborn, S. (gol.). 1 gol. Bristol, UK: Soil Association Limited, t. 45-59 15 t.Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Snakes of Papua New Guinea.
Wuster, W., Williams, D., Wüster, W., Jensen, S. (gol.), Nimorakiotakis, B. (gol.) & Winkel, K. D. (gol.), 1 Ion 2005, Venomous bites and stings in Papua New Guinea: A guide to treatment for health workers and doctors. 2005 gol. Parkville, Vic. : Australian Venom Research Unit, t. 33-64Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Social organization and information transfer in schooling fish.
Couzin, I. D., James, R., Croft, D. P., Brown, C. (gol.), Laland, K. N. (gol.) & Krause, J. (gol.), 1 Ion 2006, Fish Cognition and Behaviour. 2006 gol. Blackwell, t. 166-182Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Soil erosion.
McDonald, M. A., Lawrence, A., Shrestha, P. K., Schroth, G. (gol.) & Sinclair, F. L., 1 Ion 2003, Trees: crops and soil fertility: concepts and research methods. 2003 gol. CAB International, t. 325-343Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Soil functioning in natural and planted woodlands on slate waste
Williamson, J. C., Jones, D. L., Rowe, E. C., Healey, J. R., Bardgett, R., Hobbs, P., Moore, H. M. (gol.), Fox, H. R. (gol.) & Elliott, S. (gol.), 1 Ion 2003, Land Reclamation: Extending the Boundaries. 2003 gol. Taylor & Francis, t. 315-318Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Soil functioning in natural and planted woodlands on slate waste
Williamson, J. C., Jones, D. L., Rowe, E. C., Healey, J. R., Bardgett, R., Hobbs, P., Moore, H. M. (gol.), Fox, H. R. (gol.) & Elliott, S. (gol.), 1 Ion 2003, Land reclamation. 2003 gol. Swets & Zeitlinger, t. 315-318Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Soziale Netzwerke bei Tieren.
Krause, J., James, R., Croft, D. P. & Naguib, M. (gol.), 1 Ion 2006, Methoden der Verhaltensbiologie. 2006 gol. Springer Verlag, t. 148-152Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Stereoselective Reduction Using Sodium Triacetoxyborodeuteride: Synthesis of Methyl 2,3-Di-O-benzyl-α-d-(4-2H)-glucopyranoside
Mobarak, H., Engstrom, O., Lahmann, M., Widmalm, G., Roy, R. (gol.) & Vidal, S. (gol.), 27 Mai 2015, Carbohydrate Chemistry: Proven Synthetic Methods: Volume 3. 2015 gol. CRC Press, t. 81-88Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Studies on the relaxation of heat-treated wood.
Gonzalez-Pena, M., Breese, M. C., Hale, M. D., Militz, H. (gol.) & Hill, C. A. (gol.), 1 Ion 2005, Wood modification: processes: properties and commercialisation.. 2005 gol. Gottingen, t. 87-90Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Studying magnesium transport across and via mycorrhiza of Norway spruce roots.
Kuhn, A. J., Jentschke, G., Stettien, A., Brande, B., Godbold, D. L., Schroder, W. H., Horst, W. W. (gol.), Sattelmacher, B. (gol.), Schmidhalter, U. (gol.), Schubert, S. (gol.), Von Wiren, N. (gol.), Wittenmayer, L. (gol.), Schenk, M. K. (gol.), Burkert, A. (gol.), Claassen, N. (gol.) & Flessa, H. (gol.), 1 Ion 2001, Plant nutrition - food security and sustainability of agro-ecosystems through applied and basic research.. 2001 gol. Kluwer Academic Publishers, t. 642-643Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Substantive element "Economic aspects of forests", including "Trade"
Price, C., Ramersteiner, E., Guldin, R., Buck, A. (gol.), Parrotta, J. (gol.) & Wolfrum, G. (gol.), 1 Ion 2003, Science and technology - building the future of the world's forests: planted forests and biodiversity. 2003 gol. IUFRO Occasional Paper 15, t. 5-8Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Symbiotic Rickettsia.
Braig, H. R., Turner, B. D., Perotti, M. A., Bourtzis, K. (gol.) & Miller, T. A. (gol.), 1 Ion 2008, Insect Symbiosis 3. 2008 gol. Taylor and Francis, t. 221-252Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Synthesis and Lewis acidity of B-O-Si and B-O-Sn derivatives.
Beckett, M. A., Owen, P., Varma, K. S., Davidson, M. G. (gol.), Hughes, A. K. (gol.), Marder, T. B. (gol.) & Wade, K. (gol.), 1 Ion 2000, Contemporary Boron Chemistry. 2000 gol. Royal Society of Chemistry, t. 100-103Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Taking local knowledge about trees seriously.
Sinclair, F. L., Joshi, L. & Lawrence, A. (gol.), 1 Ion 2001, Forestry: forest users and research: new ways of learning. 2001 gol. ETFRN, t. 45-61Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Techniques for detecting and identifying acidophilic mineral-oxidising microorganisms.
Johnson, D. B., Hallberg, K. B., Rawlings, D. E. (gol.) & Johnson, D. B. (gol.), 1 Ion 2007, Biomining. 2007 gol. Springer Verlag, t. 237-262Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Techniques for detecting and identifying acidophilic mineral-oxidizing microorganisms
Johnson, D. B., Hallberg, K. B. & Rawlings, D. E. (gol.), 1 Ion 2006, Biomining. 2006 gol. Springer Verlag, t. 237-261Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Terrestrial Invertebrate Animal Metagenomics, Lumbricidae
Nechitaylo, T. Y., Ferrer, M., Golyshin, P. N. & Nelson, K. E. (gol.), 18 Chwef 2015, Encyclopedia of Metagenomics. 2015 gol. Springer, t. 1-10Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
The COMPLEX Approach to Innovation Management
Winder, N. & Winder, I., 2016, The Quest for a Model-Stakeholder Fusion: COMPLEX Final Scientific Report . Winder, N., Liljenstrom, H. & Seaton, R. (gol.). Sigtuna: Sigtuna Foundation Press, Cyfrol 1. t. 211-219 (Human Nature Series).Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
The Description of Work (DOW) as a Model
Winder, N. & Winder, I., 2016, The Quest for a Model-Stakeholder Fusion: COMPLEX Final Scientific Report. Winder, N., Liljenstrom, H. & Seaton, R. (gol.). Sigtuna: Sigtuna Foundation Press, Cyfrol 1. t. 189-199 (Human Nature Series).Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
The Mekong River basin: comprehensive water governance.
Gajaseni, N., Heal, O. W., Edwards-Jones, G., Finger, M. (gol.), Tamiotti, L. (gol.) & Allouche, J. (gol.), 1 Ion 2001, The multi-governance of water through four case studies. 2001 gol. SUNY Press, t. 43-78Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod