IOSR-JAP   Volume-10 ~ Issue-3 ~ May-June 2018

ABSTRACT: This study was performed to calculate the chromium component ratio in the Ingassana Hills in the Blue Nile region. Thirty samples were taken from the area. The samples were grinded into powder and each sample was 25 grams. The XRF was used to analyze the samples and identify the concentration of the elements in the sample.And by the concentration of each element in the sample. The analysis showed that the average chromium element concentration in the samples was 671550 PPM. The price of chromium is shown in the world markets, where it is seen that these concentrations are very important and can contribute to the economy if used correctly.

Keywords: Chromium mining, concentration of chromium, chromium in Sudan, chromium price.

[1]. Ahmed, A.M., 1998, Sudanese Industrial Minerals and Rocks, Center for Strategic Studies, Khartoum, Sudan, 76-86.
[2]. The Geological Research Authority of the Sudan (GRAS).
[3]. Adli A.M .Ahmed, 1998, Sudan industrial minerals and rocks, centre for strategic studies, Khartoum- Sudan, pp.76-86.
[4]. Ahmed, A.M., 1998, Sudanese Industrial Minerals and Rocks, Center for Strategic Studies, Khartoum, Sudan, 76-86.
[5]. Report On The Second-Phase Of Programme Of Reconnaissance Chrome Prospecting In Ingassana Province, Republic Of Sudan.

ABSTRACT:Clyde.W. Tombough discovered Pluto on march13, 1930. From its discovery in 1930 until 2006, Pluto was classified as Planet. In the late 20th and early 21st century, many objects similar to Pluto were discovered in the outer solar system, notably the scattered disc object Eris in 2005, which is 27% more massive than Pluto. On august-24, 2006, the International Astronomical Union (IAU) defined what it means to be a Planet within the solar system. This definition excluded Pluto as a Planet added it as a member of the new category "Dwarf Planet" along with Eris and Ceres. There were many reasons why Pluto got demoted to dwarf planet status, one of which was that it couldn't clear its orbit of asteroids and other debris...............

Keywords: Dwarf Planet, Kuiper belt, self-gravity, New Horizon, Clearing the neighborhood.

[1]. Steven Soter (2007). ―What is a Planet?‖ The Astronomical Journal 132 (6).
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[4]. Allen, Clabon Walter; Cox,Arthur N(2000). Allen's Astrophysical Quantities. Springer.p.296.ISBN 0-387-98746- 0. Retrieved 17 August 2010.
[5]. ―Age of Earth‖ U.S. Geological Survey.1997. Archived from the original on 23 December 2005. Retrieved January 2006

ABSTRACT: Radiotherapy is the treatment of cancer patients by the use of radiation doses, during and after the treatment there is a side effect appears on patients. It is also used to treat a wide variety of conditions, but mainly to treat malignant diseases or cancer all over the world. In external beam radiotherapy, doses outside the treated volume is very important when organs at risk(OAR) with very low dose limits are involved, These organs are very sensitive to radiation and can completely loss its function and completely damaged if they received radiation dose larger than their limits or tolerances, for example the gonads in a patient treated from any type of tumors in pelvis region, the eyes lenses in head and neck tumors, the healthy breast tissues in case of breast cancer, the heart in case of left breast treatment and the embryo in case of pregnant woman. It is of extreme importance to determine............

[1]. Reissland JA. BEIR III 'The effects on populations of exposure to low levels of ionising radiation'. J Soc Radiol Prot. 1981;1:17–22.
[2]. van der Giessen PH. Peridose, a software program to calculate the dose outside the primary beam in radiation therapy. Radiother Oncol. 2001;58:209–213.
[3]. Francois P, Beurtheret C, Dutreix A. Calculation of the dose delivered to organs outside the radiation beams. Med Phys. 1988;15:879–883
[4]. Fraass BA, van de Geijn J. Peripheral dose from megavolt beams. Med Phys. 1983;10:809–818.

ABSTRACT:The study of ultrasonic velocities(u),densities(ρ) viscosities(η),were carried out for Aniline+1- Hexanol+Hexane at 303k.These ternary system was comprise of a polar, non-polar molecules and calculated thermo dynamical properties such as adiabatic compressibility(βa),free length(Lf),free volume(Vf), internal pressure(πi),and excess values predicted to the system. The results were combined with excess adiabatic compressibility reported previously to obtain ideal isothermal compressibility (KT id),ideal isobaric expansibility(αP id) and ideal molar heat capacitance(σid) derivatives of excess adiabatic compressibility(βE).these discusses the nature and strength of molecular intermolecular interaction in the system.

Keywords: Sound Velocity, Density, Molecular Interaction, Excess values.

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