Keanekaragaman Jenis Burung Diurnal di Kawasan Hutan Kota Gunung Sari Kota Singkawang

Forest City Gunung Sari has a potential that needs to be extracted and can be used for example to value the beauty that can be used as a tourist attraction. Bird was instrumental in building a tourist park because of its beauty is the value of voice and other fur. The beauty of birds of all he had to give a pleasure in itself. Based on the results of observations show that of the three habitats in the path of observation, obtained the number of diurnal birds have been found in the study site 18 species, classified into 13 families, namely : (Accipitridae), (Columbidae), (Aegithinidae), (Nectariniidae), (Dicaeidae), (Hirundinidae), (Estrildidae), (Psittaculidae), (Timaliidae), (Cisticolidae), (Passeridae), (Pycnonotidae), (Picidae). Primer forest habitats found in 13 species of diurnal birds, 12 species of secondary forest habitats and 9 species around the estate. From the calculation, the highest dominance index contained in the habitat surrounding forest plantations morning time C=0.1613, day time C=0.1458, and the afternoon time C=0.1264. While the species diversity index was highest in primary forest habitat value morning time =1.0531, day time =1.0397, =0.0260 late afternoon and secondary forest habitats have a high diversity index values in the morning with value of =1.0287. Habitat differences provide a clear influence of the dominant species, in which the dominance of this species is the opposite of diversity. Diversity of small species produce mastery of habitats, so that the dominance of the species will be spread more evenly due to the small number of species that might be the number of individuals to live and breed better. Keywords: Diversity of species , diurnal bird , forest city Gunung Sari

Magnetism dependent phonon anomaly in LaFeAsO observed via inelastic x-ray scattering

The phonon dispersion was measured at room temperature along (0,0,L) in the tetragonal phase of LaFeAsO using inelastic x-ray scattering. Spin-polarized first-principles calculations imposing various types of antiferromagnetic order are in better agreement with the experimental results than nonmagnetic calculations, although the measurements were made well above the magnetic ordering temperature, T_N. Splitting observed between two A_{1g} phonon modes at 22 and 26 meV is only observed in spin-polarized calculations. Magneto-structural effects similar to those observed in the AFe_2As_2 materials are confirmed present in LaFeAsO. The presence of Fe-spin is necessary to find reasonable agreement of the calculations with the measured spectrum well above T_N. On-site Fe and As force constants show significant softening compared to nonmagnetic calculations, however an investigation of the real-space force constants associates the magnetoelastic coupling with a complex renormalization instead of softening of a specific pairwise force.Comment: 7 pages, 4 figure

The Effects of Retrogression and Reaging on Aluminum Alloy 2099 (C458)

The objective of this study was to investigate the feasibility of performing retrogression and reaging (RRA) heat treatments on 2099 aluminum-lithium alloy. The retrogression temperatures were 200-250 A degrees C and retrogression times were 5-60 min. Half of the samples were exposed to a salt fog environment. Interestingly, the samples exposed to salt spray had consistently higher mechanical tensile properties than those which were not exposed

The Effects of Retrogression and Reaging on Aluminum Alloy 2195

A retrogression and reaging (RRA) treatment was performed on 2195 Al-Li Alloy. The exposure times were from 5 to 60 min, and the temperatures were from 200 to 250 A degrees C. Samples that were exposed to a salt spray test had overall similar mechanical properties as compared to those that were not exposed. The percent elongation, however, was significantly deteriorated due to the salt spray exposure. The mechanical properties of the 2195 samples were compared to those of 2099 samples exposed to similar treatments in an earlier study

Avatars of Eurocentrism in the critique of the liberal peace

Recent scholarly critiques of the so-called liberal peace raise important political and ethical challenges to practices of postwar intervention in the global South. However, their conceptual and analytic approaches have tended to reproduce rather than challenge the intellectual Eurocentrism underpinning the liberal peace. Eurocentric features of the critiques include the methodological bypassing of target subjects in research, the analytic bypassing of subjects through frameworks of governmentality, the assumed ontological split between the ‘liberal’ and the ‘local’, and a nostalgia for the liberal subject and the liberal social contract as alternative bases for politics. These collectively produce a ‘paradox of liberalism’ that sees the liberal peace as oppressive but also the only true source of emancipation. However, the article suggests that a repoliticization of colonial difference offers an alternative ‘decolonizing’ approach to critical analysis through repositioning the analytic gaze. Three alternative research strategies for critical analysis are briefly developed

First record of Taningia danae (Cephalopoda: Octopoteuthidae) in the Mediterranean Sea

The capture of a specimen of the oceanic cephalopod Taningia danae Joubin, 1931, caught during a bottom trawl survey carried out off the Algerian coast, is reported for the first time in the Mediterranean Sea. The individual, which was taken at 385-395 m depth, was a juvenile with a 55.6 mm mantle length and age of 132 days. This finding is important as there are few worldwide records of this speciesPublicado