NEA

Spain, Tmbia nea Oviedo 1972 spray chamber as primary roaster, plate reactor as secondary stage continuous electrolysis of filtered electrolyte, continuous crystallization 2,000 112... 

The U.S. Department of Energy (DOE) and the NEA/IAEA employ similar terms to classify uranium resources, as (7) reasonably assured, estimated additional (EA), or speculative. The NEA/IAEA divides the estimated additional resources into two types, EAR-I and EAR-II, describing known resources and undiscovered ones, respectively (8). 

Foreign. The OECD/NEA and IAEA have issued annual reports on world uranium resources, production, and demand since the mid-1960s (2—6). NEA/IAEA data for reasonably assured and estimated additional resources at costs of 80 and 130/kg uranium are given in Table 2 (21). These estimates incorporate data from both former world outside centrally planned economies (WOCA) and non-WOCA nations. A summary of other known uranium resources with and without cost range estimates is provided in Table 3 (22). These resources total about 1.4 x 10 t and include estimates that are not strictly consistent with standard NEA/IAEA definitions. 

Navin Chemical Enterprises, 169, 174 Navin Fluorine Industries, 169, 174 NAXOL , cyclohexanol, 96 NEA, 96... 

Table I. shows the calculated results of dilate limit. It is obvious that the nea.rest-neighlror interactions are of major importance. The fundamental characteristic features of ordering systems such as PdV, NiV, and NiAl are explained by the large positive value of the NN IE s positive means repulsion between the two impurity atoms. The continuous solid solubilities of CuNi a.nd AgPd correspond to the small values of the IE s. ...

Grenthe, I. Ferri, D. Proc. OECD/NEA Workshop on Near-field Phenomena In Geologic Repositories for Radioactive Waste OECD/NEA Paris 1981. 

Noshkin, V.E. and Wong, K.M., Proceedings of Third Nuclear Energy Agency, NEA, "Seminar on Marine Radioecology" Tokyo, October 1-5, 1979, (in press). 

Saltelli, A. Avogadro, A. Bertozzi, G. "Proc. Workshop on the Migration of Long-lived Radionuclides in the Geosphere" OECD/NEA Paris, 1979 p 147. 

Figure 4. Phase-resolved plots, continued. Fractions hydrophobic weak (c) and strong (d) acids. (Continued on nea page.)...

Azaroff LS, Neas LM. 1999. Acute health effects associated with nonoccupational pesticide exposure in mral El Salvador. Environ Res A80 158-164. 

An attractive alternative to these novel aminoalcohol type modifiers is the use of 1-(1-naphthyl)ethylamine (NEA, Fig. 5) and derivatives thereof as chiral modifiers [45-47]. Trace quantities of (R)- or (S)-l-(l-naphthyl)ethylamine induce up to 82% ee in the hydrogenation of ethyl pyruvate over Pt/alumina. Note that naphthylethylamine is only a precursor of the actual modifier, which is formed in situ by reductive alkylation of NEA with the reactant ethyl pyruvate. This transformation (Fig. 5), which proceeds via imine formation and subsequent reduction of the C=N bond, is highly diastereoselective (d.e. >95%). Reductive alkylation of NEA with different aldehydes or ketones provides easy access to a variety of related modifiers [47]. The enantioselection occurring with the modifiers derived from NEA could be rationalized with the same strategy of molecular modelling as demonstrated for the Pt-cinchona system. 

In order to obtain Pt nanoparticles, aqueous solution of 10 M K2PtCl4, which contained 10 M (as monomer unit) of poly-NIPA or poly-NEA, was bubbled with Ar gas and then H2 gas. Then the reaction vessel was sealed tightly and kept in a water bath at a suitable temperature. At given reaction times, the vessels were opened and the samples for transmission electron microscopy (TEM) were prepared by soaking a grid (carbon substrate, Oken) in the colloidal solution and then drying it in the air. The TEM (Hitachi H-8100) was operated at 200 kV. 

The phase transition temperatures (lower critical solution temperature, LCST) of the pol5miers were obtained from the change in the transmittance of their aqueous solutions (Figure 1). The aqueous solution of the obtained pol5uner was prepared and its transmittance at 500 nm was monitored with increase in the ambient temperature. Both of poly-NIPA and poly-NEA showed a sudden decrease in the transmittance at 37.5 and 69.2 °C, respectively. The result shown in Figure 1 clearly suggests the thermosensitivity of the pol5mers, and the obtained LCST values are close to those reported for poly-NIPA (34.8 °C) [8] and poly-NEA (72 °C) [9]. 

Figure 1. Transmittance of the polymer solutions at 500 nm with increase in the ambient temperature. (A) poly-NIPA and (B) poly-NEA.

Figure 2. TEM images of Pt nanoparticles obtained by using poly-NIPA as capping material at (A) 25 °C and (B) 40 °C, together with the images of particles obtained by using poly-NEA at (C) 40 °C and (D) 80 °C.

A square and triangular Pt nanoparticle obtained by using poly-NIPA and poly-NEA, respectively, was observed by high resolution TEM (HRTEM) (JEM-2010F). The images (Figure 4) show a crystalline structure with clearly resolved lattice fringes. The square Pt nanoparticle... 

Figure 4. High resolution TEM images of (A) a square Pt particle and (B) a triangular Pt particle obtained by using poly-NIPA at 40 °C and poly-NEA at 80 °C, respectively.

Uranium, Resources, Production and Demand, A Joint Report by the OECD-NEA and IAEA, 1993. 

Absorption of americium is greater in iron deficient animals than in iron replete adult animals (Sullivan and Ruemmler 1988 Sullivan et al. 1986) (see Section 3.4.1.2). Concurrent oral exposure to Fe3+ and americium also appears to increase the absorption of ingested americium the latter effect may result from redox reactions in the gastrointestinal tract catalyzed by Fe3+ (Sullivan et al. 1986). These differences are accounted for in the discussions and dosimetric/metabolic models of the ICRP (1989, 1993) and the NEA (1988). 

NEA. 1988. Gastrointestinal absorption of selected radionuclides. Paris Nuclear Energy Agency. 

Anegawa, T., S. Abata, O. Yakomizo, and Y. Yoshimoto, 1990, Space-Dependent Stability Analysis of Corewide and Regional Modes in BWRs, Proc. Int. Workshop on BWR Stability, Holtsville, NY, pp. 337-353, CSNI Rep. 178, OECD-NEA, Paris. (6)... 

Shackleton, N. J. (1970), Stable isotope study of the palaeoenvironment of the neolithic site of Nea Nikomedeia, Greece, Nature 227, 943-944. 

Fig. 7.19 Illustration of the additivity of conformational geometry functions for the -ro-tation in (CH3CO)(H)N-C(CH3)(H)(CONHCH3) (ALA). During the torsional motion about the N-C(a) bond of ALA, the interactions within the system are the same as those encountered during the N-C torsion in N-ethyl acetamide (NEA), plus those encountered during the N-C(a) torsion in N-acetyl N -methyl glycine amide offset by 120° as shown (GLY), minus those encountered during the N-C torsion in N-methyl acetamide (NMA).

Thus, Vanmarcke et al. (1987) shows that over the range of values they have measured, the dose is relatively constant per unit radon concentration according to the James-Birshall model (NEA, 1982). 

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