Keanekaragaman Jenis Tupai (Tupaiidae) dalam Kawasan Gunung Semahung Desa Paloan Kecamatan Sengah Temila Kabupaten Landak Diversity Of Squirrel (Tupaiidae) In Mount Semahung Paloan Village Sengah Temila Landak District

This study aims to determine the squirrel (Tupaiidae) species diversity in Hutan Lindung Gunung Semahung Paloan Village Sengah Temila Landak District. Using line method, with length 500 m and width 100 m, the plots were taken purposively where the Tupaiidae is found. Tupaiidae identification using Mammals Field Guide (Payne et al,.1985), and local people. There are 3 species of Tupaiidae found in Hutan Lindung Gunung Semahung Paloan Village namely: Tupaia minor, T.splendidula, T.gracilis, and total of 190 individuals. In the lowland area, there were 3 species of Tupaiidae were found (106 individuals), whereas in the hilly area 2 species were found (84 individuals), T.gracilis were not found in the hilly area. The Tupaiidae diversity in the area is low, showed by the diversity index below 1 (H=0,8950). Dominance index C=0,4383, means that more than one species of Tupaiidae are dominant in the area that is;T.minor and T.splendidula. Richness index D=1,5071. Evenness index is low (e=0.8146) means individuals of each species are not even, there are two dominant species (T.minor and T.splendidula), and the individuals of T.gracilis is low and only found in lowland area. Further observations are needed to obtain more comprehensive information about Tupaiidae.Keywords : Tupaiidae, species diversity, protection forest Mount Semahun

Renewables grabbing : Land and resource appropriations in the global energy transition

The global land rush intersects with the global energy transition and the emergence of new renewable energy frontiers demanding vast amounts of land and other resources. This chapter provides an overview of the processes of land and resource grabbing associated with renewable energies and discusses the environmental injustices emerging in the global energy transition. After a brief examination of the multiple drivers of the global energy transition and their specific implications for resource and land grabbing, a sectoral perspective on the four major renewable energy sources describes the emergence of new energy-land frontiers: biofuels, hydropower dams, mega solar power, and wind parks. For each frontier, the chapter points to key resources required and appropriated and discusses the related environmental conflicts and justice concerns that are arising. Close examination of these conflicts provides important lessons for moving toward a socially just energy transition

Stationary Properties of a Randomly Driven Ising Ferromagnet

We consider the behavior of an Ising ferromagnet obeying the Glauber dynamics under the influence of a fast switching, random external field. Analytic results for the stationary state are presented in mean-field approximation, exhibiting a novel type of first order phase transition related to dynamic freezing. Monte Carlo simulations performed on a quadratic lattice indicate that many features of the mean field theory may survive the presence of fluctuations.Comment: 5 pages in RevTex format, 7 eps/ps figures, send comments to "mailto:[email protected]", submitted to PR

Molecular bridges

The adsorption of Cu-phthalocyanine (CuPc) molecules on Au-modified Ge(001) surfaces has been studied with low-temperature scanning tunneling microscopy. The Au-modified Ge(001) surface consists of well-ordered arrays of perfectly straight nanowires, which are separated by 1.6 nm wide and about 0.6 nm deep trenches. Six different adsorption configurations for CuPc are identified. Four of these configurations are “molecular bridge” configurations where the molecule bridges two adjacent nanowires. The core of the CuPc molecule, i.e., the Cu atom, is fully decoupled from the underlying substrate. For sufficiently high sample biases (>1 V), rotation and diffusion events of the CuPc molecules are observed

The Cosmological Probability Density Function for Bianchi Class A Models in Quantum Supergravity

Nicolai's theorem suggests a simple stochastic interpetation for supersymmetric Euclidean quantum theories, without requiring any inner product to be defined on the space of states. In order to apply this idea to supergravity, we first reduce to a one-dimensional theory with local supersymmetry by the imposition of homogeneity conditions. We then make the supersymmetry rigid by imposing gauge conditions, and quantise to obtain the evolution equation for a time-dependent wave function. Owing to the inclusion of a certain boundary term in the classical action, and a careful treatment of the initial conditions, the evolution equation has the form of a Fokker-Planck equation. Of particular interest is the static solution, as this satisfies all the standard quantum constraints. This is naturally interpreted as a cosmological probability density function, and is found to coincide with the square of the magnitude of the conventional wave function for the wormhole state.Comment: 22 pages, Late

A New Method for Computing Topological Pressure

The topological pressure introduced by Ruelle and similar quantities describe dynamical multifractal properties of dynamical systems. These are important characteristics of mesoscopic systems in the classical regime. Original definition of these quantities are based on the symbolic description of the dynamics. It is hard or impossible to find symbolic description and generating partition to a general dynamical system, therefore these quantities are often not accessible for further studies. Here we present a new method by which the symbolic description can be omitted. We apply the method for a mixing and an intermittent system.Comment: 8 pages LaTeX with revtex.sty, the 4 postscript figures are included using psfig.tex to appear in PR

Properties of excitations in systems with a spinor Bose-Einstein condensate

General theory in case of homogenous Bose-Einstein condensed systems with spinor condensate is presented for the correlation functions of density and spin fluctuations and for the one-particle propagators as well. The random phase approximation is investigated and the damping of the modes is given in the intermediate temperature region. It is shown that the collective and the one-particle excitation spectra do not coincide fully.Comment: 5 pages, 1 figur

Shifts and widths of collective excitations in trapped Bose gases by the dielectric formalism

We present predictions for the temperature dependent shifts and damping rates. They are obtained by applying the dielectric formalism to a simple model of a trapped Bose gas. Within the framework of the model we use lowest order perturbation theory to determine the first order correction to the results of Hartree-Fock-Bogoliubov-Popov theory for the complex collective excitation frequencies, and present numerical results for the temperature dependence of the damping rates and the frequency shifts. Good agreement with the experimental values measured at JILA are found for the m=2 mode, while we find disagreements in the shifts for m=0. The latter point to the necessity of a non-perturbative treatment for an explanation of the temperature-dependence of the m=0 shifts.Comment: 10 pages revtex, 3 figures in postscrip