Virulence of Spanish Phytophthora nicotianae isolates towards Capsicum annuum germplasm and pathogenicity towards Lycopersicum esculentum

The virulence of six northwestern Spanish Phytophthora nicotianae Breda de Haan isolates towards the pepper (Capsicum annuum) cultivars commonly used for the determination of P. capsici Leonian pathotype (SCM 334, PI201234 and Yolo Wonder), was similar to that of the latter oomycete but different to that of the German reference isolate P. nicotianae 411.87. When nine local C. annuum cultivars were inoculated with a P. nicotianae isolate of well known pathogenicity, the virulence recorded was significantly different to that recorded for P. capsici. Though the average level of resistance of the northwestern Spanish Capsicum germplasm to P. nicotianae was incomplete and weaker than that recorded for the SCM 334 and PI201234 cultivars, genotypes Co 12B and Co 3.25 showed high resistance to this oomycete. None of the six northwestern Spanish P. nicotianae isolates tested were pathogenic towards Lycopersicum esculentum cv. S. Pedro, unlike P. capsici, which produced clear collar and root rot in this host

Commensurate-Incommensurate Magnetic Phase Transition in Magnetoelectric Single Crystal LiNiPO4_4

Neutron scattering studies of single-crystal LiNiPO$_4$ reveal a spontaneous first-order commensurate-incommensurate magnetic phase transition. Short- and long-range incommensurate phases are intermediate between the high temperature paramagnetic and the low temperature antiferromagnetic phases. The modulated structure has a predominant antiferromagnetic component, giving rise to satellite peaks in the vicinity of the fundamental antiferromagnetic Bragg reflection, and a ferromagnetic component giving rise to peaks at small momentum-transfers around the origin at $(0,\pm Q,0)$. The wavelength of the modulated magnetic structure varies continuously with temperature. It is argued that the incommensurate short- and long-range phases are due to spin-dimensionality crossover from a continuous to the discrete Ising state. These observations explain the anomalous first-order transition seen in the magnetoelectric effect of this system

Remarks on the representation theory of the Moyal plane

We present an explicit construction of a unitary representation of the commutator algebra satisfied by position and momentum operators on the Moyal plane.Comment: 10 pages, minor changes, refs. adde

On the noncommutative eikonal

We study the eikonal approximation to quantum mechanics on the Moyal plane. Instead of using a star product, the analysis is carried out in terms of operator-valued wavefunctions depending on noncommuting, operator-valued coordinates.Comment: 18 page

On the trail of OE policy co-creation

The workshop objectives are to give the participants with some basic policy co-design skills, and as well as an overview of the key techniques and elements needed to opening up the arenas to foster sustainable policies. To support these objectives the workshop is grounded on the participation and co-creation standard developed by OGP to foster the co-creation of national commitments, and uses a set of cards and a canvas (adapted from those developed by the UK Policy Lab) aligning the elements with those recommended by the Ljubljana Action Plan, and the JRC report, Policy Approaches to Open Education The workshop aim at raising awareness of the international landscape to widening participation to ensure that the policy co-creation process in a specific context, involving a wide range of partners to ensure the correct implementation, overseeing the opportunities and challenges of an OE policy, and the key elements these must comprise to foster global policy convergence [Haddad & Demsky (1995); Thompson & Cook (2014)]. By using a policy canvas and change cards, the participants consider issues such as who needs to be involved in the policy-making process, and who is needed to implement the policy considering the local context and the sociocultural issues at play, alongside with and other policies or regulatory models to draw upon. The first workshop was held at the OpenMed conference (Rome) with stakeholders from Egypt, Italy, Jordan, Lebanon, Morocco, Palestine, Spain, and UK participated. The second workshop was held at the Open Education Policy Forum (Warsaw_ with participants from Germany, Malta, Poland, Romania, Slovenia, Spain, Sweden, and The Netherlands The third workshop was held at OER19, with participants from Ireland, England, Scotland, Austria, The Netherlands, Australia and Spain discussed the potential of Open Education policies at international level