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- F Aharonian, A G Akhperjanian, +152 authors A Zech
- Physical review letters
- 2008

The very large collection area of ground-based gamma-ray telescopes gives them a substantial advantage over balloon or satellite based instruments in the detection of very-high-energy (>600 GeV) cosmic-ray electrons. Here we present the electron spectrum derived from data taken with the High Energy Stereoscopic System (H.E.S.S.) of imaging atmospheric… (More)

- R. Brucker
- 2012

The geometric properties of the di-meron solution to the SU (2) Yang-Mills equations are studied in detail. The essential geometric structure of this solution is that of a locally symmetric space endowed with a Riemannian structure which is conformally flat. The di-meron solution is representable by an integrable 3-distribution over Euclidean 4-space. The… (More)

- Ruth Brucker, Ruth Levitz, Ezra Yagil, Ilan Friedberg
- Current Microbiology
- 2005

Complementation between mutants impaired in inorganic phosphate (Pi) transport via the phosphate-specific transport (PST) system was studied. For that purpose the transport of Pi via the alternative Pi transport (PIT) system was bioenergetically arrested. Complementation was found betweenpstB andphoT mutations, whereas each of these mutations failed to… (More)

- R. Brucker, M. Sorg
- 2013

The geometric and topological properties of SO(4)-trivializable SU(2) gauge fields are investigated in detail. The geometry of trivializable configurations is most adequately described by a conformally flat Riemannian structure, which yields a common geometric framework for both instantons and merons. In topologically nontrivial situations, the… (More)

- Ruth Levitz, Ilan Friedberg, Ruth Brucker, Asora Fux, Ezra Yagil
- Molecular and General Genetics MGG
- 1985

The periplasmic phosphate binding protein is a product of the phoS gene and is an essential component of the phosphate specific transport (PST) system, which mediates Pi uptake in Escherichia coli. The binding of Pi to periplasmic protein(s) and the kinetic parameters of Pi uptake were studied in phoT and pstB mutants of E. coli. These mutants are impaired… (More)

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