52 research outputs found
Evaluation of Winter protein pea cultivars in the conditions of Serbia
There is a widespread opinion that the development of winter cultivars of protein pea could significantly increase its cultivation area, especially in the temperate regions. A small-plot trial was carried out on a chernozem soil at the Experiment Field of the Institute of Field and Vegetable Crops at Rimski Ć anÄevi, including six French and three Bulgarian winter protein pea cultivars. The cultivar 5105 had the earliest date of beginning of flowering (April 16) and the earliest date of harvest (June 11). The cultivars Dove and 5105 had the highest winter survival coefficients, with 0.93 each in the year of 2004/05 and 0.92 each in the year of 2005/06. In average, the highest grain yield was in the cultivars 5174 (6567 kg ha-1) and Dove (6453 kg ha-1) while the lowest grain yield was in the cultivar Frilene (1062 kg ha-1)
The recent star formation history of the Hipparcos solar neighbourhood
We use data from the Hipparcos catalogue to construct colour-magnitude
diagrams for the solar neighbourhood, which are then treated using advanced
Bayesian analysis techniques to derive the star formation history, , of
this region over the last 3 Gyr. The method we use allows the recovery of the
underlying without the need of assuming any {\it a priori} structure
or condition on , and hence yields a highly objective result. The
remarkable accuracy of the data permits the reconstruction of the local
with an unprecedented time resolution of Myr. A
having an oscillatory component of period Gyr is found,
superimposed on a small level of constant star formation activity. Problems
arising from the non-uniform selection function of the Hipparcos satellite are
discussed and treated. Detailed statistical tests are then performed on the
results, which confirm the inferred to be compatible with the observed
distribution of stars.Comment: 9 pages including figures, MNRAS in pres
Elevated Electron Temperatures in the Auroral E Layer Measured With the Chatanika Radar
An extensive series of spectral measurements has been made in the auroral E region with the Chatanika incoherent scatter radar. Becasue of the small scale length for variations of electron density, temperatures, and ion-neutral collisions we used the operating mode with the best possible range resolutionâ9 km. About 5% of the time the data exhibited an unusual spectral shape that was most pronounced at 105 and 110 km. Instead of being almost Gaussian with only a small hint of two peaks, the spectra are much wider, with two well-developed peaks. After carefully considering the validity of the measurements and their interpretation, we conclude that the unusual spectra are due to greatly enhanced electron temperatures. At 110 km, the electron temperature may increase from 250 K to 800 K, while the ion temperature remains near 250 K. This enhancement of the electron temperature extends from 99 km to at least 116 km. We show that the temperature increase is too large to be accounted for by auroral particle precipitation, though it coincides in time with ion temperature enhancements at altitudes above 125 km. Because these latter enhancements are believed to be due to joule heating, we deduce that electric fields of 24-40 mV/m are present and that the electrons are moving through the ions and neutrals at speeds of 500-800 m/s. Despite these velocities, we find that joule heating of the electrons also cannot account for the elevated electron temperatures. Several consequences of the elevated electron temperatures are discussed. One is that the rate constants for molecular recombination are reduced. Another is that during periods of significant joule heating, the deduced electron density profile, when fully corrected for temperatures, has a significantly lower peak altitude and greater density than that deduced under the usual assumption of equal electron and ion temperatures. Since conductivities, currents, ionization rates, and differential energy spectra are dependent upon the density profile, care must be taken to account properly for the temperature effects when deriving these quantities
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Scatter plots of Omega 3 fatty acid concentrations (units) versus normalised relative quantities for DE genes for Outdoor/pasture-fed (nâ=â22) and indoor/concentrate-fed animals (nâ=â22). (DOCX 177 kb
Impairment of skin graft take after CO2 laser surgery in melanoma patients
SCOPUS: ar.jFLWNAinfo:eu-repo/semantics/publishe
Prolonged survival after resection of a malignant melanoma metastatic to the stomach
SCOPUS: ar.jFLWINinfo:eu-repo/semantics/publishe
Microbiological and Serological Verification of Cornea Donors
A study was made during 1994 about microbiological contamination on the donor eyes before enucleation of whole globe. We studied the efficiency of the decontamination method by checking sterility of corneal storage medium after two days. We give results of serological tests on 252 donors
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