Brown core

Hollow heart, brown core 4.7 se imaging, 1-D se imaging projections 92... 

With regard to the observation of brown -centered clinkers, Pennell (1986) stated, We have observed that brown-cored clinker results from burning in a CO2... 

Examination of a thin section of oxidized PAN by an electron probe microanalyzer for O2 has revealed that the outer brown core was oxidized and relatively rich in O2 as compared to the inner yellow core [189]. 

The presence of tubercles is usually obvious. Friable brown and orange nodular encrustations on mild steel and cast iron cooling water components are almost always tubercles (Figs. 3.12 through 3.14). The presence of a crust, shell, core, cavity, and corroded floor are definitive (Fig. 3.3). Careful analysis can provide considerable information concerning growth, chemical composition, and associated metal loss. 

Brown, J.M., and McQueen, R.G. (1982), The Equation of State for Iron and the Earth s Core, in High Pressure Research in Geophysics (edited by Akimoto S. and M.H. Manghnani), Academic Press, New York, pp. 611-622. 

Calcium-binding residues are brown, and residues that form the hydrophobic core of the motif are light green. The helix-loop-helix region shown underneath is colored as in Figure 2.13. 

Figure 3.S Schematic diagram of packing side chains In the hydrophobic core of colled-coll structures according to the "knobs In holes" model. The positions of the side chains along the surface of the cylindrical a helix Is pro-jected onto a plane parallel with the heUcal axis for both a helices of the coiled-coil. (a) Projected positions of side chains in helix 1. (b) Projected positions of side chains in helix 2. (c) Superposition of (a) and (b) using the relative orientation of the helices In the coiled-coil structure. The side-chain positions of the first helix, the "knobs," superimpose between the side-chain positions In the second helix, the "holes." The green shading outlines a d-resldue (leucine) from helix 1 surrounded by four side chains from helix 2, and the brown shading outlines an a-resldue (usually hydrophobic) from helix 1 surrounded by four side chains from helix 2.

The frequency of fire-induced core melt, calculated by averaging the observed frequency of the Browns Ferry type of fire over the experience of U.S. commercial nuclear power plants, was found to be lE-5 per reactor-year, or about 20% of the total core-melt probability e.slimated in the Reactor Safety Study. Kazarians and Apostolakis (1978) performed the same type of calculations under different assumptions and concluded that the frequency of core melt could be higher by a factor of 10. 

Copper metal is comparatively inactive, but it reacts with concentrated nitric acid. The brown fumes are I l02(g), a reduction product of HN03. The copper is oxidized to Cuz+ ions, which impart their color to the solution. (The penny is an old one made of solid copper. Newer pennies have a coating of copper over a zinc core.)... 

It is important to carefully document core ADHD symptoms at baseline to provide a reference point from which to evaluate effectiveness of treatment. Improvement in individualized patient outcomes are desired, such as (1) family and social relationships, (2) disruptive behavior, (3) completing required tasks, (4) self-motivation, (5) appearance, and (6) self-esteem. It is very important to elicit evaluations of the patient s behavior from family, school, and social environments in order to assess the preceding. Using standardized rating scales (e.g., Conners Rating Scales-Revised, Brown Attention-Deficit Disorder Scale, and IOWA Conners Scale) in both children and adults with ADHD helps to minimize variability in evaluation.29 After initiation of therapy, evaluations should be done every 2 to 4 weeks to determine efficacy of treatment, height, weight, pulse, and blood pressure. Physical examination or liver function tests may be used to monitor for adverse effects. 

Addition of sufficient base to give a > 3 to a ferric solution immediately leads to precipitation of a poorly ordered, amorphous, red-brown ferric hydroxide precipitate. This synthetic precipitate resembles the mineral ferrihydrite, and also shows some similarity to the iron oxyhydroxide core of ferritin (see Chapter 6). Ferrihydrite can be considered as the least stable but most reactive form of iron(III), the group name for amorphous phases with large specific surface areas (>340 m2 /g). We will discuss the transformation of ferrihydrite into other more-crystalline products such as goethite and haematite shortly, but we begin with some remarks concerning the biological distribution and structure of ferrihydrite (Jambor and Dutrizac, 1998). 

The timescale of a microwave observation is ca 10 12s so that an average of the properties of the species in equilibrium (35) is obtained if the equilibrium occurs in a time shorter than this. The X-ray photoelectron spectra of intramolecularly hydrogen-bonded species in the gas phase have been studied in an attempt to obtain an instantaneous picture of the structure of these molecules. In this technique the ionisation of core electrons which occurs within 10 16s is observed. For malondialdehyde, 6-hydroxy-2-formyl-fulvene, 2-hydroxy-1,1,1,5,5,5-hexafluoropent-2-ene-4-one, 9-hydroxyphen-alenone [19], and tropolone [20], two peaks are observed in the Ou region of the photoelectron spectrum (Brown et al., 1979). If these molecules existed in the C2v form with a symmetrical hydrogen bond and equivalent oxygen... 

Tohme J, Jones P, Beebe S, Iwanaga M (1995) The combined use of agroecological and characterisation data to establish the CIAT Phaseolus vulgaris core collection. In Hodgkin T, Brown ADH, Van Hitum TJL, Morales EAV (eds) Core collections of plant genetic resources. IPGRI-Wiley, Chinchester, pp 95-107... 

Figure 11 Structurai representatives of the core NRPS domains from X-ray crystallographic analysis, (a) Two conformations (brown box) of A domains differing in the orientation of the subdomains. The top structure (PDB code, 1 AMU) is postuiated to be the conformation responsible for activating the amino acid and the lower (PDB code, 3CW9) for loading the amino acid onto the phosphopantetheine arm. (b) X-ray structure of the VibH condensation domain (PDB code, 1L5A) and (c) the TE domain from surfactin synthetase (PDB code, 1JMK) are also illustrated in ribbon format.

---