Marine radiocarbon reservoir effect of coastal waters off Cape Verde archipelago

Quantification of the marine radiocarbon reservoir effect (Delta R) is essential in order to calibrate conventional C-14 dates from marine shell samples with reliability. Delta R also provides information concerning the intensity of coastal upwelling in marine regions influenced by this phenomenon. C-14 ages of closely associated marine samples (mollusk shells) and terrestrial samples (goat bones) from Sao Vicente Island, Cape Verde Archipelago, permitted the first calculation of the marine C-14 reservoir effect in this region. A Delta R weighted mean value of 70 +/- 70 C-14 yr was obtained. This value is in accordance with the previously published oceanographic conditions of the region indicating the existence of a seasonal active upwelling regime

IMPACT DES TRANSFERTS DES MIGRANTS SUR LE BIEN-ÊTRE MONÉTAIRE DES MÉNAGES EN BASSE KABYLIE

Sur la base d’une enquête en Basse Kabylie, cet article vise à évaluer les effets des transferts des migrants sur le niveau de vie monétaire des ménages. Les transferts en provenance de l’étranger représentent des sommes considérables qui alimentent le budget des ménages concernés. Ils sont estimés, pour l’année 2005, à 259980 dinars par ménage. Le montant des transferts ainsi reçus en Basse Kabylie peut être estimé à plus de 6,7 milliards de dinars algérien soit 78,8 millions d’euros. La pauvreté monétaire chez les bénéfi-ciaires des transferts est nettement inférieure à celle des autres ménages. L’incidence de la pauvreté totale est de 5,4% seulement pour les ménages bénéficiant de ces revenus, alors qu’elle s’élève à 17,5% pour les autres. Une application économétrique met en avant le rôle positif et significatif de ces transferts dans l’amélioration du bien-être monétaire des ménages. Le fait de bénéficier de transferts en provenance de l’étranger, ceteris paribus, augmente la dépense par tête de 29%. Une estimation Probit des déterminants de la pauvreté des ménages renforce cette conclusion. Le fait de bénéficier des transferts réduit la probabilité qu’un ménage soit pauvre de 7,2%. Abstract - From a survey on the standard of living of the households in Basse Kabylie, Algeria, this paper aims to evaluate the effects of migrants’ remittances on the household’s monetary welfare in this region. The remittances coming from abroad contributed and will contribute for few years to the improvement of the monetary welfare of the households. They represent considerable sums which feed the budget of the concerned households. They are estimated, for the year 2005, at 259980 DA per household. On this basis, the amount of the transfers received into Basse Kabylie can be then estimated at more than 6,7 billion DA witch correspond to 78,8 million euros. The analysis of the profiles of monetary poverty indicates that the incidence of monetary poverty of households receiving the remittances is lower than that of other households. The incidence of total poverty accounts for 5,4% only for the households profiting from these incomes, whereas it amounts to 17,5% in the other group. The econometric application confirms this result, since it puts under light the positive and significant role of remittances in the improvement of the monetary welfare of the households. The fact of profiting from transfers coming from abroad, ceteris paribus, increases the expenditure per capita by 29%. The Probit estimation of the determinants of poverty households confirm this result since the coefficient relating to remittances is very significant and negative. The fact of profiting from remittances, reduce the probability that a household be poor by 7,2%.IMPACT DES TRANSFERTS DES MIGRANTS, ALGÉRIE, BASSE KABYLIE, PAUVRETÉ MONÉTAIRE

Chiral vibrations in the A=135 region

Chiral vibrations are studied with the RPA plus self-consistent tilted axis cranking formalism in the A=135 region. In this method chiral vibrations appear as a precursor to the static chiral regime. The properties of the RPA phonons are discussed and compared to experimental data. We discuss the limits the chiral region and the transition to the non harmonic regime.Comment: 9 pages, 14 figures, revised versio

Under The Dome: Doped holographic superconductors with broken translational symmetry

We comment on a simple way to accommodate translational symmetry breaking into the recently proposed holographic model which features a superconducting dome-shaped region on the temperature-doping phase diagram.Comment: 14 pages, 6 figure

Proposals for Studying TeV WLWL→WLWLW_L W_L \rightarrow W_L W_L Interactions Experimentally

We discuss how to experimentally study the symmetry breaking sector by observing $W_L W_L \rightarrow W_L W_L$ interactions in the TeV region. We discuss some general features of the event structure in the signal and background events. Various tricks to enhance the signal--to--background ratio are also presented. We show how to detect longitudinal $W$--bosons either in the central rapidity region of the detector or in the beam pipe direction.Comment: PHYZZX, 14 pages, MSUTH 92/0

Is Noncommutative Eternal Inflation Possible?

We investigate the condition for eternal inflation to take place in the noncommutative spacetime. We find that the possibility for eternal inflation's happening is greatly suppressed in this case. If eternal inflation cannot happen in the low energy region where the noncommutativity is very weak (the UV region), it will never happen during the whole inflationary history. Based on these conclusions, we argue that an initial condition for eternal inflation is available from the property of spacetime noncommutativity.Comment: 14 pages, 2 figures, accepted by JCA

Mini-Collagens in Hydra Nematocytes

We have isolated and characterized four collagen-related c-DNA clones (N-COL 1, N-COL 2, N-COL 3, N-COL 4) that are highly expressed in developing nematocytes in hydra. All four c-DNAs as well as their corresponding transcripts are small in size (600-1,000 bp). The deduced amino acid sequences show that they contain a central region consisting of 14 to 16 Gly-X-Y triplets. This region is flanked amino-terminal by a stretch of 14-23 proline residues and carboxy-terminal by a stretch of 6-9 prolines. At the NH2- and COOH-termini are repeated patterns of cysteine residues that are highly conserved between the molecules. A model is proposed which consists of a central stable collagen triple helix of 12-14 nm length from which three 9-22 nm long polyproline II type helices emerge at both ends. Disulfide linkage between cysteine- rich segments in these helices could lead to the formation of oligomeric network structures. Electrophoretic characterization of nematocyst extracts allows resolution of small proline-rich polypeptides that correspond in size to the cloned sequences