Abstract. A topological group H is called ω -narrow if for every neighbourhood V of it’s identity element there exists a countable set A such that V A = H = AV. A semigroup G is called a generalized group if for any x ∈ G there exists a unique element e(x) ∈ G such that xe(x) = e(x)x = x and for every x ∈ G there exists x − 1 ∈ G such that x − 1x = xx − 1 = e(x). Also le...

BACKGROUND Conflict in healthcare is a well-recognised but under-examined phenomenon. Little is known about the prevalence and causes of conflict across paediatric specialties. OBJECTIVE To report the frequency and characteristics of conflict in a paediatric hospital. DESIGN AND SETTING An explanatory sequential mixed-method approach was adopted. A bespoke questionnaire recorded frequency, ...

until recently pet scanning has been available only at major universities or teaching hospitals possessing the necessary resources and expertise to operate a research pet facility. most dedicated pet centers cost several millions of dollars, and include a cyclotron, a radiochemistry laboratory to synthesize pet radiopharmaceuticals, a multicrystal dedicated pet camera, advanced computer facilit...

let r be a prime ring with extended centroid c, h a generalized derivation of r and n ⩾ 1 a xed integer. in this paper we study the situations: (1) if (h(xy))n = (h(x))n(h(y))n for all x; y 2 r; (2) obtain some related result in case r is a noncommutative banach algebra and h is continuous or spectrally bounded.

H. Hasegawa, R. Tada, X. Jiang, Y. Suganuma, S. Imsamut, P. Charusiri, N. Ichinnorov, and Y. Khand Department of Earth and Planetary Science, the University of Tokyo, Tokyo, Japan Chengdu Institute of Geology and Mineral Resources, Chengdu, China National Institute of Polar Research, Tokyo, Japan Department of Mineral Resources, Bureau of Geological Survey, Bangkok, Thailand Department of Geolo...