Indexing

Abstract: Zinc Oxide (ZnO) thin films were prepared on corning (7059) glass substrates at a thickness of 75.5 and 130.5nm by RF sputtering technique. The deposition was carried out at room temperature after which the samples were annealed in open air at 1500C. The electrical and structural properties of these films were studied. The electrical properties of the films were monitored by four-point probe method while the structural properties were studied by X-ray diffraction (XRD). It was found that the electrical resistance of the films decreases with increase in the thickness of the films. The XRD analysis of the films showed that the films have a peak located at 〖34.31^0-34.35〗^0with hkl (002). Other parameters calculated include the stress ( ) and the grain size (D).

Keywords: Electrical Properties, Film thickness, Structural properties, Zinc oxide.
Title: Influence of Thickness on Electrical and Structural Properties of Zinc Oxide (ZnO) Thin Films Prepared by RF Sputtering Technique
Author: M.Momoh, S.Abdullahi, A.U Moreh
ISSN 2350-1030
International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)
Paper Publications

Abstract: Microalgae have been identified as a third generation potential biofuel source, which can replace transportation fuels derived from fossil energy sources. Biodiesel production from microalgae biomass is generally performed by one of the two methods: The conventional microalgae biodiesel production essentially involving two main steps; Extraction of oils from the biomass and the oil extraction step involving cell disruption by mechanical, chemical, or biological methods and oil collection by solvent finally, direct in situ production of biodiesel from microalgae biomass. Because vegetable oils or animal fats have high viscosity, i.e., 35–50 mm2 s−1, it is necessary to reduce the viscosity in order to use them in a common diesel engine. Four methods are used to solve this problem: Blending with petro-diesel, pyrolysis, microemusification (co-solvent blending) and transesterification, only the transesterification reaction creates the products commonly known as biodiesel. The in situ offers the advantages of high lipid yield with low loss, simple process with lower cost and time consumption compared to the conventional two steps method.

Keywords: Biofuel, Extraction, In situ, Microalgae, Transesterification.
Title: LIPID EXTRACTION AND TRANSESTERIFICATION TECHNIQUES OF MICROALGAE –A REVIEW
Author: Kiman Silas, Highina Bitrus Kwaji, Babagana Gutti
ISSN 2350-1030
International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)
Paper Publications

Abstract: Nickel ,Zinc, copper Mixed spinel ferrite compound was synthesized by using High field technique method and the  well ground powder is fired at 9000C for 20 hours and furnace cooled approximately at the rate of 1000C per hour. The resulting powders were characterized by X- ray diffraction (XRD). The magnetic properties of the compound analyzed by hysteresis loop measured using high field measurements.
Keywords: Ferrites, High field measurements, Hysteresis loop X - ray diffraction.
Title: Study on Ni 0.5-X Znx Cu0.5 Fe2 O4 Sintered Ferrite System Using Xrd & High Field Techniques
Author: Dhanalakshmi .A, Dr. S. Aravazhi
ISSN 2350-1030
International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)
Paper Publications

Abstract: Studies of ultrasonic velocity, viscosity and density of Glucose have been carried out in ethanol + water solvent at different temperatures of 308.15 K and 313.15 K. The variations in Ultrasonic velocity with concentrations in the system show a trend of increasing ultrasonic velocity, viscosity and density of the constituents at different temperatures, but decrease with increase in temperature for the same concentration.

Keywords: Ultrasonic velocities, glucose, viscosity, ethanol, density, concentration, temperature.
Title: Ultrasonic Velocity and Viscosity of Glucose in Ethanol + Water Solution At 308 K And 313 K
Author: Dikko A. B., Ike E, Ezike S. C., Bashir M.
ISSN 2350-1030
International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)
Paper Publications

Abstract: Nanoparticles NiFe2-xGdxO4 (x=0, 0.1, 0.2, 0.3, 0.4) was prepared by solgel combution method. The samples were characterized with VSM and Electrical measurements. Complex impedance and Complex electric modulus plots were further studied for complete contribution of grains and grain boundary resistances to conduction and resonance frequencies respectively. Magnetic studies by Vibrating Sample Magnetometer (VSM) shows that magnetization (Ms) decreases with increase in Gd3+ concentration. Coercivity (Hc) first decreases for x=0.1, after which it increases up to x=0.4.

Keywords: Rare earth ions, Resistivity, Impedence, VSM, Magnetization, Coercivity.
Title: Influence of Rare Earth (Gd3+) On Electrical and Magnetic Studies of Nickel Ferrite Nanoparticles
Author: K Rafeekali, Muhammed Maheen
ISSN 2350-1030
International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)
Paper Publications

Abstract: In this research was the study effect of ethylthiazole-4-carboxylate as inhibitor on copper corrosion in 0.5M HCl acid by using weight loss and polarization methods, results showed of decrease corrosion current density and corrosion rate with increasing inhibitor concentration of corrosion at 30 C and corresponding increase the efficiency of inhibition and surface coverage, the same way for the temperature of 40 and 50 C , where efficiency decreases depending on the temperature increase. Increase the inhibitor concentration, increased energy both activation, enthalpy and free of adsorption and decreased entropy energy, and this shows that the inhibitor has good energy to activate the process of adsorption and desorption be chemical type from good type inhibitor. Formation layer of film due found oxygen, nitrogen and sulphur molecules which have a crucial role to build the film.

Keywords: ethylthiaozole-4-carboxylate, copper , HCl ,weight loss ,polarization, corrosion.
Title: Using Ethylthiazole-4-Carboxylate as Inhibitor for Copper Corrosion in 0.5 M HCL Acid
Author: Dr. Raheem Aziz Hussein AL-Uqaily
ISSN 2350-1030
International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)
Paper Publications