Nitrogen (N) is the most important element that controls plant growth. During the past twenty years, our understanding of which N species are important for plant growth has developed significantly but it is still thought that large nitrogenous molecules need to be broken down into their constituent amino acids to be available for plant and microbial growth. This paper builds on our understanding of this process and suggests that small peptides are equally important for microbial nutrition and that soil microbes outcompete plants for low molecular weight N compounds in maritime Antarctic soil.

Darlith gan Dr Carwyn Jones yn amlinellu canlyniadau ymchwil ansoddol i mewn i brofiad cyn bêl-droediwr proffesiynol a oedd yn dioddef o alcoholiaeth. Mae'n olrhain ei hanes o'i blentyndod drwy yrfa fer broffesiynol, ei gwymp i mewn i ddibyniaeth a'i adferiad. Gall myfyrwyr is-raddedig ddefnyddio'r adnodd er mwyn cael: Gwybodaeth ddamcaniaethol am ddibyniaeth Esiampl o ymchwil dadansoddol astudiaeth achos Gwybodaeth am effeithiau dibyniaeth

Cynhaliwyd cynhadledd ymchwil cyfrwng Cymraeg gyntaf yr Ysgol Seicoleg ym Mangor ar 4 Tachwedd 2013. Dr Carl Hughes oedd y prif areithiwr, yn areithio ar Newid Ymddygiad. Gellir lawrlwytho copiau o'r cyflwyniadau Pwerbwynt o dan bob cyflwyniad fideo.Traddodwyd ar ystod eang o bynciau amrywiol: Amy Hulson Jones: 'Gwella sgiliau darllen sylfaenol' Awel Vaughan Evans: 'Trosglwyddiad gramadegol rhwng y Gymraeg a'r Saesneg' Catherine Sharp: 'Y Food Dudes. Y Rhaglen Blynyddoedd Cynnar. Astudiaeth Gwerthuso wedi ei Rheoli' Ceri Ellis: 'Allwn ni gynnal cred mewn un iaith, ond nid y llall? Astudiaeth o gredoau diwylliannol ac emosiynol mewn pobl ddwyieithog Cymraeg-Saesneg' Denise Foran: 'Canlyniadau plant a dderbyniodd ymyriad ABA dwysder isel mewn ysgol anghenion arbennig' Dr Carl Hughes: 'Newid Ymddygiad: Be di'r Broblem?' Dr Leah Jones: 'Ymwybyddiaeth Ofalgar er lles rhieni plant ag anableddau deallusol a datblygiadol: datblygu mesurau cyfrwng Cymraeg ar gyfer ymchwil iechyd meddwl' Dr Nia Griffith: 'Ymchwilio'r Blynyddoedd Cynnar yng Nghymru' Ela Cernyw: 'Lles seicolegol rhieni sy'n siarad Cymraeg a gyda phlentyn ag anabledd dysgu' Emma Hughes: 'Gyffredinoli trawsieithyddol o effaith therapi mewn anomia dwyieithog Cymraeg-Saesneg' Yvonne Moseley: 'Datblygu rhaglen ddarllen Cymraeg yn seiliedig ar wybodaeth, tystiolaeth ac ymchwil'

Interview with Alan Llwyd about the film ‘Hedd Wyn’ and the art of scripting for the screen. There is a Question and Answer section at the end. The session was recorded in the School of Creative Arts and Media in Bangor University, in March 2012.

701 pieces of litter were collected per kilometre from a small rural road in Gwynedd. The minimum annual ‘hidden’ cost of this litter – uncollected by the local authority – was £11.81 per kilometre. The comparable annual cost of such litter on small rural roads throughout Wales is £230,000. A substantial proportion of these costs could be eliminated through introducing a deposit system for cans and bottles. 13 specific companies were responsible for producing more than one quarter of all the litter collected. The Welsh Government could arrange an annual mitigation payment of £58,000 from them in order to defray the hidden costs of litter associated with their activities.

This article focuses on the effects of music on sufferers of dementia as a means of communicating through familiar songs within a Welsh context. The fieldwork is based on the author’s experience singing to the accompaniment of the Celtic harp at an assessment unit for dementia and at resident homes for the elderly on the Llŷn Peninsula during the Summer of 2010 and presents insights gained from observing patients recalling familiar songs when conversation was difficult. On this basis, the article examines the way in which music can assist patients who suffer from this condition, describing and analysing the results.

This article compares the renowned letters of Kate Roberts and Saunders Lewis with the correspondence of two leading nineteenth-century French authors, Gustave Flaubert and George Sand, considering the value and purpose of letters between authors. In addition to widening our understanding of Roberts and Lewis’s works, the article also places the Sand-Flaubert correspondence in a new context, and considers the development of authorial correspondence over the decades. It draws original conclusions by revealing that literary letters continue to play a key role for writers in the twentieth century: offering encouragement and advice, a means of escape from current circumstances, and an important tool in the struggle against the emptiness of modern society.

Cyfres o glipiau digidol yn pwysleisio’r manteision o astudio a gweithio trwy gyfrwng y Gymraeg ym myd Busnes.

Mae'r clipiau yma yn olrhain hanes cynhadledd achos er mwyn gwarchod plant. Mae’r clipiau yn cynnig enghraifft i fyfyrwyr o’r modd y cynhelir Cynhadledd Achos. Yn yr achos hwn, trafodir dau blentyn ifanc o’r enw Siân a Dylan. Mae Siân yn bump oed, a Dylan yn fabi deunaw mis oed. Pwrpas cynnal y Gynhadledd Achos yw i benderfynu a ddylai’r plant barhau ar y gofrestr amddiffyn plant ai peidio. Mae'r fideo wedi ei rannu mewn i 8 rhan. Dychmygol yw’r cymeriadau yn yr adnodd hwn, ond mae’r math yma o sefyllfa yn gyffredin iawn o fewn cyd-destun y Gynhadledd Achos.

Health services offer a privileged space to define the proper relationship of the citizen and the modern state. Individuals have been expected to make choices in health care in Wales and England since the 1980s. A new vaccine against some types of cervical cancer was recently introduced for girls. Parents are expected to consent on behalf of their daughters. This paper reports the results of the largest qualitative study in this area world-wide. It depicts attitudes to health care choice and discusses parents’ experiences of consenting or not. Parents’ decisional strategies in the face of uncertainty are analysed. Consequences of the study relate to the individuals’ relationship with the Welsh National Health Service (NHS) and to developing a concept of Welsh citizenship.

Darlith gan Alan Llwyd ar Kate, ei gofiant i Kate Roberts. Recordiwyd y ddarlith yn Ysgol y Gymraeg, Prifysgol Bangor, ym mis Mawrth 2012. Cyllidwyd y digwyddiad drwy gyfrwng grant bach gan y Coleg Cymraeg Cenedlaethol.

The knowledge we have about the sun’s corona is based on observations made from afar. It is impossible, therefore, to speculate about the three-dimensional structure of the corona directly. This article outlines the history of the study of the structure of the corona, and describes new techniques which for the first time enable us to know the structure of the corona in detail. A description is given of the change in the structure over the life cycle of the sun, together with new information about the connection between the magnetic field and coronal density and new results concerning the rotation rates of the corona. The results show that knowledge about the corona can be greatly increased by applying new tomography techniques, enabling and stimulating further studies of the corona in years to come.