The magnetic, transport and magnetoresistive properties of La1−xCaxMnO3 (x ≈ 0.33) crystals prepared by the floating-zone method are studied. In general, these properties testify to rather good crystal perfection of the sample studied. In particular, a huge magnetoresistance ([R(0)−R(H)]/R(H) in the field H = 5 T is about ≈ 2680 %) is found near the Curie temperature (216 K). At the same time, ...

Both the autonomous and chromosomally integrated F plasmids were found to replicate in a nonrandom fashion after a density transfer from heavy medium ([13C]glucose, 15NH4) to light medium ([12C]glucose, 14NH4). The data are consistent with the hypothesis that both the chromosome and the F plasmid are replicated in a cell cycle-specific manner. Thus, these data support the proposal (J. D. Keasli...

3.6.1. Polishing and Cleaning 2663 3.6.2. Vacuum and Heat Treatments 2664 3.6.3. Carbon Electrode Activation 2665 3.7. Summary and Generalizations 2666 4. Advanced Carbon Electrode Materials 2666 4.1. Microfabricated Carbon Thin Films 2666 4.2. Boron-Doped Diamond for Electrochemistry 2668 4.3. Fibers and Nanotubes 2669 4.4. Carbon Composite Electrodes 2674 5. Carbon Surface Modification 2675 5...

Ruilan Zhang, Ying Wang, Li Zhang, Zhenggang Zhang, Wayne Tsang, Mei Lu, Lijie Zhang in Rats Sildenafil (Viagra) Induces Neurogenesis and Promotes Functional Recovery After Stroke Print ISSN: 0039-2499. Online ISSN: 1524-4628 Copyright © 2002 American Heart Association, Inc. All rights reserved. is published by the American Heart Association, 7272 Greenville Avenue, Dallas, TX 75231 Stroke doi:...

A simple stability indicating reversed-phase HPLC method was developed and subsequently validated for estimation of Cefpirome sulphate (CPS) present in pharmaceutical dosage forms. The proposed RP-HPLC method utilizes a LiChroCART-Lichrosphere100, C18 RP column (250 mm × 4mm × 5 μm) in an isocratic separation mode with mobile phase consisting of methanol and water in the proportion of 50:50 % (...

The non-enzymatic browning of glucose was investigated by accelerating the glucose degradation with or without heating glucose solutions for 1 h at 100°C with different reagents. Evaluation of the glucose degradation was performed using two types of glucose, glucose A and glucose B, in order to investigate the influence of the glucose manufacturing process on glucose discoloration. The color fo...

This paper examines the nature of high growth firms (HGFs) and how they are supported by public policy. HGFs have become a key focus for public policy within the UK and across many OECD economies in recent years. In parallel with this, there has been a growing body of research and evidence which has accumulated on the nature of these firms. However, sizeable gaps in our knowledge remain on how ...

Digital Photogrammetry is the quality leap in the means, ability, efficiency and agility of spatial information acquirement. Digital Photogrammetric Workstation (DPW) is the mainstream product of Digital Photogrammetry System. Nowadays DPW plays important roles in acquiring spatial data. With the emergence of high resolution sensor, such as IKONOS, QuickBird, SPOT5 and ADS40, the traditional DP...