No abstract available

[en] We perform calculations for the binding energies and low-lying levels of ^{10,11,12,13,14,15,16,17,18,19,20,21,22}C nuclei starting from the chiral N3LO nucleon-nucleon potential within the framework of the Hybrid Multideterminant scheme. The effective interaction is obtained using the Lee-Suzuki renormalization scheme applied to 4 and in some cases to 5, major harmonic oscillator shells. The results are compared with the experimental data. (author)

[en] Many solubility data for M(II) carbonates commonly compiled in tables are contradictory and sometimes obviously wrong. The quality of such data has been evaluated based on the original publications and reliable solubility constants have been selected for the carbonates of Mn, Fe, Co, Ni, Cu, Zn, Cd and Pb with the help of cross-comparisons. (author)

No abstract available

[en] The course of thermal dissociation of the following carbonates of the rare earth elements: La₂(CO₃)₃.8H₂O, Ce₂(CO₃)₃.6H₂O, Pr₂(CO₃)₃.8H₂O, Nd₂(CO₃)₃.4H₂O and Sm₂(CO₃)₃.4H₂O was examined by means of the derivatograph OD 102, system F. Paulik-J. Paulik-L. Erdey. On the basis of derivatograms the ranges of temperatures of existence of intermediate products and temperatures of their decomposition were determined. The results obtained were compared with the data from chemical literature. (author)

[en] The chemistry of inorganic carbonates is reviewed, with emphasis on solubility and hydrolytic stability, in order to identify candidate waste forms for immobilization and disposal of ¹⁴C. At present, CaCO₃ and BaCO₃ are the two most widely favoured wasted forms, primarily because they are the products of proven CO₂-scrubbing technology. However, they have relatively high solubilities in non-alkaline solutions, necessitating care in selecting and assessing an appropriate disposal environment. Three compounds with better solubility characteristics in near-neutral waters are identified: bismutite, (BiO)₂CO₃; hydrocerussite, Pb₃(OH)₂(CO₃)₂; and rhodochrosite, MnCO₃. Some of the limitations of each of these alternative waste forms are discussed

[en] A quarter-century ago, one of us termed the use of nuclear energy a Faustian Bargain. In this paper, we discuss what a Faustian Bargain means, how the expression has been used in characterizing other technologies, and in what measure CO₂ capture and storage is a Faustian Bargain. If we are about to enter into another Faustian Bargain, we should understand the contract

[en] The objective of our research is the development of a system resembling a CO₂ scrubber, in which carbonic anhydrase catalyzes the rate of CO₂ hydration for subsequent fixation into stable mineral carbonates. The present focus is on the use of produced waters as one of various possible sources of the counterions for precipitation. Carbonate precipitation has been studied from synthetic brines corresponding to a range of compositions of produced waters from the Permian and San Juan Basins, and promising results have been obtained with carbonic anhydrase. CO₂ sequestration capacities are estimated to be 0.49-1.85x10³ tonnes CO₂/year and 1.28-2.80x10⁵ tonnes CO₂/year for the San Juan and Permian Basins, respectively, per cycle, up to ∼3mt CO₂ per year total, based on the volumes of produced waters in 2002. (author)

[en] Full carbon accounting for regions as a whole, considering all fluxes and transports, is ultimately the only real hope if we are to manage global CO2 emissions. Many methods exist to estimate parts of the carbon budget, but none is yet available to measure carbon fluxes directly at regional scales. Atmospheric Boundary-Layer budgeting methods do have this potential. In the winter of 2000, an international workshop was held in Gubbio, Italy, to discuss ways to advance from the pilot experiments that have been carried out on these methods. First, the meeting helped to advance the methodology and clarify its objectives, requirements and merits. But more importantly, the outcome of the meeting was that atmospheric budget methods should be part of an integrative approach, in which data and model results of very different kinds and from very different scales all provide constraints for estimating the net carbon exchange of a region. Several international projects are now operating to achieve this goal

[en] It describes the design and test of Sampling Instrument of C-14 in air. The instrument is designed to collect CO₂, CO, CH₄ in the air and is based on MSP430. The instrument can choose time mode or fixed quantify mode to sample air according to the needs in practice. (authors)