Abstract Two new processes occurring during nanorod annealing of ceria are disclosed, both belonging to the wider “oriented attachment” (OA) scheme crystal growth, which commonly drives nanoparticles growing into nanorods. The first process is an inversion standard OA, where usual solid particles replaced by well-facetted shape-equilibrated voids inside larger single crystals. internal facetted...

The objective of this paper is to apply the Hybrid Efficiency Loss Minimization control scheme [1] into a FOC controlled ACIM motor drive in order to improve the fast on-line loss minimization control through flux control,. The proposed controller combines a Loss Model Controller (LMC) to control the transient states and a Fuzzy Logic Search Control system (FLSC) to control steady states. The L...

We calculate the solar-modulated energy spectra of cosmic-ray antiprotons (¯ p's) from two candidate primary sources, i.e., evaporating primordial black holes and the annihilation of neutralino dark matter, as well as for the secondary ¯ p's produced by cosmic-ray interactions with interstellar gas. A large enhancement toward the solar minimum phase emerges in the low-energy flux of ¯ p's from ...

We report measurements of the flux hysteresis curves and trapped flux distribution in an YBa2Cu3O7 r.f. SQUID containing two closely spaced grain boundary Josephson junctions in parallel. Broadening of the flux distribution from T = 15 K to 30 K is followed by a bifurcation at T = 35 K which corresponds to a degenerate ground state. Above T ≈ 40 K the bifurcation disappears, the flux distributi...

Matrix Converters are becoming popular in industrial applications due its better performance than the conventional VSI converters. The advantages of Matrix Converters are bidirectional current flow, adjustable displacement angle and sinusoidal input current and output voltage. Two control schemes used to control the speed of Induction motor. They are Field Oriented Control and Direct Torque Con...

Streptomycetes are exploited for production of a wide range of secondary metabolites, and there is much interest in enhancing the level of production of these metabolites. Secondary metabolites are synthesized in dedicated biosynthetic routes, but precursors and co-factors are derived from the primary metabolism. High level production of antibiotics in streptomycetes therefore requires engineer...

Synchrotron radiation circular dichroism (SRCD) spectroscopy is emerging as an important new tool in structural molecular biology. Previously we had shown that in lower-flux SRCD instruments, such as UV1 at ISA and beamline 3.1 at the SRS, vacuum ultraviolet (VUV) radiation damage to proteins was not evident after exposure over a period of hours. No effects were detected in either the protein p...