Open Access Others

Corrigendum: Electro-Gravity via Geometric Chronon Field

Eytan H. Suchard

Physical Science International Journal, Page 1-4

Corrigendum for Physical Science International Journal 7(3), 152-185, 2015 

It has been drawn to the journal's attention that there is a corrigendum of the published paper. 

Therefore, following the 'SDI Correction and retraction policy' this Corrigendum was processed and approved. Link of the 'Previously Published Paper'  is available here.

Open Access Original Research Article

Anthropogenic Carbon Dioxide (CO2) Amounts and Fluxes between the Atmosphere, the Ocean, and the Biosphere

Antero Ollila

Physical Science International Journal, Page 1-17
DOI: 10.9734/PSIJ/2015/18625

The author has developed one dimensional semi-empirical atmosphere-ocean-biosphere model (1DAOBM) based on the four-box presentation. Firstly, the author has analysed that the model development can be based on the two elements: 1) the four box-model containing two ideal mixing components (the atmosphere and the ocean), one plug flow component with four different residence times (the biosphere), and the outlet (the intermediate & deep ocean), 2) the ocean’s capacity to dissolve anthropogenic CO2 emissions of the present century. The surface ocean part is based on the known dissolution chemical equations. The net flux rate from the surface ocean into the deep ocean is based on the empirical data. The removal of the anthropogenic CO2 from the atmosphere is based on the huge carbon cycle flux rates of the dissolution pump and the biosphere carbon cycle, which remove yearly about 26% of CO2 from the atmosphere to other reservoirs and, at the same time, recycle back natural and anthropogenic carbon. The simulations of the atmospheric net CO2 rate by 1DAOBM from 1960 to 2013 show fairly good similarity to the measured values: r2 = 0.75 and the standard error of estimate 0.68 GtC/y, which means the standard error of 12% at the present emission rate of about 10 GtC/y. The simulations show that the present anthropogenic CO2 fraction in the atmosphere is 7.7%, and it explains the observed δ13C value of -8.4‰ extremely well. Also, the reduction of δ13C in the ocean from 1900 to 2013, simulated to be -0.6‰, is close to the observed values. The 1DAOBM has been used also to simulate the fluxes and CO2 concentration trends corresponding to the projection RCP4.5 of IPCC. These results deviate from the IPCC’s results in the descending phase of the CO2 emissions. The mean residence time of the total atmospheric CO2 concentration change is 32 years and that of the anthropogenic CO2 change is 15 years, according to 1DAOBM simulations.

 

Open Access Original Research Article

Tb3+ Luminescence in NaMgSO4Cl Halosulphate Phosphor for UV-LED Fluorescent Tubes

S. T. Taide, N. B. Ingle, S. K. Omanwar

Physical Science International Journal, Page 1-7
DOI: 10.9734/PSIJ/2015/18810

Rare earth doped halosulphate specially fluoride based phosphor NaMg(SO4)Cl:Tb3+ have been synthesize by modified route of slow evaporation technique. Identification of crystal structure and particle morphology of synthesized material was done by using X-ray diffraction (XRD), scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR) techniques. Iterations for photoluminescence properties of this material is of prime importance as absorption by the host material near the UV radiation edge have high excitation efficiency band at shorter wavelength than 230 nm wavelength which is characteristics of NaMg(SO4)Cl:Tb3+. This existence of excitation bands with high luminescence efficiency and deep green emission at 544 nm makes this material favorable as the phosphor for UV-LED fluorescent tubes.

 

Open Access Original Research Article

The Influence of Mechanical-Angle on the Quartz Filter Features

Ao Gao, Kong Yong, Xia Gang

Physical Science International Journal, Page 1-8
DOI: 10.9734/PSIJ/2015/19848

In this paper, by using the matrix optics, the transmission of quartz crystal birefringent filter with any direction of incidence angle, azmuth, mechanical rotation angle was derived. Through theoretical simulation obtained the laws of central wavelength and free spectral range of quartz crystal birefringent filter changing with the mechanical-angle .The results show that when rotated around the z-axis of the filter mostly influenced the features of the filter and the transmission spectrum of the designed filter is tested and investigated by using Ultra-6600 spectrophotometer. The experimental results are in good agreement with theoretical results and it is helpful for manufacturing, adjusting and designing of the quartz birefringent filter.

 

Open Access Original Research Article

Effect of Temperature on Structural, Magnetic and Dielectric Properties of Cobalt Ferrite Nanoparticles Prepared via Co-precipitation Method

Abubakar Yakubu, Zulkifly Abbas, Nor Azowa Ibrahim, Mansor Hashim

Physical Science International Journal, Page 1-8
DOI: 10.9734/PSIJ/2015/18787

Nano-crystalline cobalt ferrite powders have been synthesized by coprecipitation method and characterized to investigate the effect of thermal treament on the structural, dielectric, and magnetic properties of the prepared sample. The structural/morphological, dielectric, and magnetic properties of the products were determined by X-ray diffraction (XRD), transmission electron microscopy (TEM), open ended coaxial probe and vibrating sample magnetometer (VSM). Results from analysis confirms that thermal heat influences the magnitude of magnetization, dielectric and surface morhpology of samples. The variation of dielectric properties with frequency reveals that the variation in magnitude is due to Maxwell–Wagner type of interfacial polarization as well as hopping of charge from Fe2+ to Fe3+ and from Co2+ to Co3+ ions at B-sites.

 

Open Access Original Research Article

Application of Fractional Classical and Quantum Mechanics to Statistical Physics System

Z. Korichi, M. T. Meftah

Physical Science International Journal, Page 1-13
DOI: 10.9734/PSIJ/2015/20366

In this work, we focus our study on some systems in statistical mechanics by using a recent developpment of the fractional classical and quantum mechanics. At first, we present the thermodynamical properties of N classical and quantum oscillators in 3-dimensional space. In each case, the Hamiltonian, describing the system, exhibits fractional powers. Secondly, in the context of the fractional quantum mechanics, we calculate the thermodynamical properties for the systems: the trapped ideal Bose and Fermi gases. For the trapped ideal Bose system, Bose- Einstein condensation and the thermodynamics properties are discussed and plotted with respect to the fractional powers and the temperature. It is shown that the trapped ideal Bose gas exhibits a phase transition at a temperature TC for which the specific heat presents a discontinuity depending on the fractional powers. All calculations are performed in 3-dimensional space.