Isolates of widely distributed amoeba species Hartmannella vermiformis differs in the details of cyst structure. This is unusual for gymnamoebae and is important in course of modern approaches to amoebae systematic. Cysts of the isolate of this species, described here, have regular separation of the cyst wall into endocyst and ectocyst, in contrast with the “original” isolates, described by F.C...

The phenothiazine compounds trifluoperazine dihydrochloride and chlorpromazine hydrochloride have in vitro activity against the pathogenic free-living amoebae Naegleria fowleri, Acanthamoeba culbertsoni, and Acanthamoeba polyphaga. Drug concentrations of 10 microM were amoebastatic; concentrations of 50 microM were either amoebastatic or amoebicidal. Concentrations of 100 microM were generally ...

Abstract. The hypersurface amoeba membership problem is the problem to decide whether for an input point λ ∈ R, the point λ is an element of the amoeba of the hypersurface generated by a multivariate complex Laurent polynomial c. We present an algorithm to solve this problem based on semidefinite programming and on Lasserre’s moment method for approximating the minimum of a real polynomial. The...

Evidence from electron and phase microscopy is given which shows that infective organisms are present in the cytoplasm of Amoeba proteus. Vesicles containing living organisms have been observed after repeated washing and starvation of the amebae for a period of 2 weeks. Exposure to gamma-radiation in conjunction with starvation, repeated washing, isolation of single amebae, refeeding with conta...

Dept. of Mathematics and Computer Science Vrije Universiteit Amsterdam, The Netherlands Most distributed operating systems constructed to date have lacked a unifying mechanism for naming and protection. In this paper we discuss a system, Amoeba, that uses capabilities for naming and protecting objects. In contrast to traditional, centralized operating systems, in which capabilities are managed ...

Abstract Healthcare-related Legionnaires’ disease has a devastating impact on high risk patients, with case fatality rate of 30–50%. Legionella prevention and control in hospitals is therefore crucial. To water colonisation hospital setting we evaluated the effect pipeline improvements temperature increase, analysing 237 samples over 2-year period (first year: 129, second 108). In first year, 2...