46 research outputs found
Multiphase segregation and metal-insulator transition in single crystal La(5/8-y)Pr(y)Ca(3/8)MnO3
The insulator-metal transition in single crystal La(5/8-y)Pr(y)Ca(3/8)MnO3
with y=0.35 was studied using synchrotron x-ray diffraction, electric
resistivity, magnetic susceptibility, and specific heat measurements. Despite
the dramatic drop in the resistivity at the insulator-metal transition
temperature Tmi, the charge-ordering (CO) peaks exhibit no anomaly at this
temperature and continue to grow below Tmi. Our data suggest then, that in
addition to the CO phase, another insulating phase is present below Tco. In
this picture, the insulator-metal transition is due to the changes within this
latter phase. The CO phase does not appear to play a major role in this
transition. We propose that a percolation-like insulator-metal transition
occurs via the growth of ferromagnetic metallic domains within the parts of the
sample that do not exhibit charge ordering. Finally, we find that the
low-temperature phase-separated state is unstable against x-ray irradiation,
which destroys the CO phase at low temperatures.Comment: 9 pages, 9 encapsulated eps figure
Ethanol fermentation of a diluted molasses medium by Saccharomyces cerevisiae immobilized on chrysotile
Benefits of ultra-fast-track anesthesia in left ventricular assist device implantation: a retrospective, propensity score matched cohort study of a four-year single center experience
Analysis of genome-wide DNA arrays reveals the genomic population structure and diversity in autochthonous Greek goat breeds
Goats play an important role in the livestock sector in Greece. The national herd consists mainly of two indigenous breeds, the Eghoria and Skopelos. Here, we report the population structure and genomic profiles of these two native goat breeds using Illumina's Goat SNP50 BeadChip. Moreover, we present a panel of candidate markers acquired using different genetic models for breed discrimination. Quality control on the initial dataset resulted in 48,841 SNPs kept for downstream analysis. Principal component and admixture analyses were applied to assess population structure. The rate of inbreeding within breed was evaluated based on the distribution of runs of homozygosity in the genome and respective coefficients, the genomic relationship matrix, the patterns of linkage disequilibrium, and the historic effective population size. Results showed that both breeds exhibit high levels of genetic diversity. Level of inbreeding between the two breeds estimated by the Wright's fixation index FST was low (Fst = 0.04362), indicating the existence of a weak genetic differentiation between them. In addition, grouping of farms according to their geographical locations was observed. This study presents for the first time a genome-based analysis on the genetic structure of the two indigenous Greek goat breeds and identifies markers that can be potentially exploited in future selective breeding programs for traceability purposes, targeted genetic improvement schemes and conservation strategies
Kissiris-Supported Yeast Cells: High Biocatalytic Stability and Productivity Improvement by Successive Preservations at 0 °C
A Framework for Providing User Level Quality of Service Guarantees in Multi-Class Rate Adaptive Systems
A qualitative outline to industrialize alcohol production by catalytic multistage fixed bed tower (MFBT) bioreactor
Heparin induced thrombocytopenia diagnosis in cardiac surgery: Is there a role for thromboelastography?
The aim of the present protocol is to investigate the potency of thromboelastography (TEG) to screen postcardiac heparin induced thrombocytopenia (HIT) patients suspicious for HIT type II, and to differentiate which of them are subject to suffer thrombotic complications from those who will suffer hemorrhagic complications
Heparin induced thrombocytopenia diagnosis in cardiac surgery: Is there a role for thromboelastography?
The aim of the present protocol is to investigate the potency of thromboelastography (TEG) to screen postcardiac heparin induced thrombocytopenia (HIT) patients suspicious for HIT type II, and to differentiate which of them are subject to suffer thrombotic complications from those who will suffer hemorrhagic complications