Archives-August 2013

The Corrosion inhibition of a inhibitor namely Zn complex of 1-(8-hydroxy quinolin-2yl-methyl) urea (Zn-HUF) in controlling corrosion of mild steel immersed in aqueous solution containing 60 ppm Cl- has investigated using weight loss method. The corrosion inhibition efficiency offered by 50 ppm of Zn-HUF is 74 %. The corrosion inhibition was observed due to the formation of more stable and compact protective film on the metal surface. Fluorescence spectral analysis was used to detect the presence of iron-inhibitor complex. Polarization study and Electrochemical Impedance spectra confirm the formation of a protective film formed on the metal surface.

Iron (II) Chromate nano particles were synthesized via chemical co precipitation method from Iron (II) chloride and Potassium Chromate. Structural and compositional properties were characterized by XRD, SEM, FTIR and UV spectroscopy X-ray diffraction (XRD) confirmed the preferential growth of Iron (II) Chromate nano particles that width is 61.27nm. The SEM image shows the synthesized Iron (II) Chromate show well crystallized particles with spherical morphology. The FTIR spectrum is used to study the stretching and bending frequencies of molecular functional groups in the sample. From UV spectrum, the band gap of Iron (II) Chromate nano particles is found to be 3.5eV. From AAS studies it is found that the absorbance is directly proportional to the concentration. The linear fit indicates that Iron Chromate nanoparticles have been distributed in proper proportion.

Iron (II) Hydroxide nano particles were synthesized via chemical co precipitation method from Iron (II) chloride and Sodium Hydroxide. Structural and compositional properties were characterized by XRD, SEM, FTIR and UV spectroscopy X-ray diffraction (XRD) confirmed the preferential growth of Iron (II) Hydroxide nano particles that width is 30.91nm. The SEM image shows the synthesized Iron (II) Hydroxide show well crystallized particles with spherical morphology. The FTIR spectrum is used to study the stretching and bending frequencies of molecular functional groups in the sample. From UV spectrum, the band gap of Iron (II) hydroxide nano particles is found to be 3.5eV. From AAS studies it is found that the absorbance is directly proportional to the concentration. The linear fit indicates that Iron (II) Hydroxide nanoparticles have been distributed in proper proportion.

The formalized theory of the identification of genotypes by their phenotypes in modern breeding technologies is offer. It erect on the mathematical model of the interaction "genotype-environment".

A dual-band characteristic of multilayer aperture coupled microstrip log-periodic dipole antenna is studied. Further loading of patches is performed and its effects are investigated. It is a probe fed antenna for impedance matching with 50? coaxial cable. This antenna works well in the frequency range 4.3 GHz to 8.5 GHz. It is basically a low cost, light weight medium gain antenna, which is used for wireless communication. The multilayer microstrip antenna structure involves addition of multiple layers one over the other. When a microstrip antenna is stacked with a superstrate dielectric layer, its properties like resonance frequency, gain and bandwidth are changed, which may affect the system performance. With proper choice of the thickness of substrate and superstrate layers, significant increase in bandwidth and return loss can be achieved for practical applications. This structure uses stacked configuration of three different substrates. One dielectric substrate as a feeding plane, one dielectric substrate as aperture plane and a dielectric substrate as a LPDA. The simulated antenna yields -29.16 dB return loss with 33% bandwidth with a size of 24x26x6mm3. The proposed antennas present an excellent candidate for compact and low-cost microwave integrated systems.

Language is no longer regarded as peripheral to the grasp of the world we live in, but as central to it. Words are not mere vocal labels or communicational adjuncts superimposed upon an already given order of things. This paper will analyze the language death and the revitalization process with emphasis on the collective products of social interaction, essential instruments through which human beings constitute and articulate their world. Linguistic ideas are still considered important, but have suffered considerably subsequently under rhetorical developments aimed at showing how linguistics had changed or was changing with the times. A language is often declared to be dead even before the last native speaker of the language has died. If there are only a few speakers of a language remaining, and they no longer use that language for communication, then the language is effectively dead. A language that has reached such a reduced stage of use is generally considered moribund. Language death may manifest itself when language change begins in a low-level environment such as the home or a high-level environment such as the government, The most common process leading to language death is one in which a community of speakers of one language becomes bilingual in another language, and gradually shifts allegiance to the second language until they cease to use their original language. language revitalization is often to recover the spoken use of the language. Although the goals of language revitalization vary by community and situation, a goal of many communities is to return a language that is extinct or endangered to daily use. The process of language revitalization is the reverse of language death.

This study examined the influence of religiosity and perceived social support on risky sexual behaviour among undergraduate students of Ekiti State University, Ado-Ekiti, Nigeria. Two hundred and fifty (250) students were randomly selected from among undergraduate students of Ekiti State University for the study. Six hypotheses were tested using the Santa Clara Strength of Religious Faith Questionnaire to measure Religiosity, the Multidimensional Scale for Perceived Social Support to measure Perceived Social Support, and the Sexual Risk Taking Questionnaire to measure Risky Sexual Behaviour. The results revealed that religiosity has a significant effect on risky sexual behaviour [F (246) = 22.13, P < 0.01]. It was also found that perceived social support has a significant effect on risky sexual behaviour [F (246) = 4.56, P < 0.05]. However, religiosity and perceived social support do not have any significant interaction effect on risky sexual behaviour [F (246) = 0.173, P > 0.05]. Findings from this study also revealed that males exhibit more risky sexual behaviour than females with significant difference in the mean scores of males (5.56) and females (2.70), [t (248) = 4.98, P < 0.01]. Nonetheless, females and males do not differ significantly on perceived social support [t (248) = -0.59, P > 0.05]. These findings were discussed in the light of available literature and it is recommended that to curtail risky sexual behaviour among Nigeria undergraduates, they should be encouraged to be highly religious, get involved in religious activities, and belief in God. Relevant authorities should also put in place measures to educate the citizenry, by embarking on a large scale enlightenment campaign against indiscriminate sexual involvements through the use of social networks and print and electronic media that would inform and enlighten young people about the consequences of indiscriminate sexual practices. Young people should also be provided with actual social support by friends, families, and significant others as findings revealed that young people who enjoy greater social support are less likely to engage in indiscriminate sexual practices.

Copper (II) Phosphate nano particles were synthesized via chemical co precipitation method from Copper Sulphate and Sodium Phosphate. The formed nano particle is characterized by powder X-ray diffraction, scanning electron microscopy, Ultra-violet spectroscopy and Fourier transform infrared spectroscopy, confirmed the preferential growth of Copper (II) Phosphate nano particles that width is 55.08 nm. The SEM image shows the synthesized Copper (II) Phosphate show well crystallized particles with cauli flower like morphology. The FTIR spectrum is used to study the stretching and bending frequencies of molecular functional groups in the sample. From UV spectrum, the band gap of Copper (II) Phosphate nano particles is found to be 2.5 eV. From AAS studies it is found that the absorbance is directly proportional to the concentration. The linear fit indicates that Copper (II) Phosphate nanoparticles have been distributed in proper proportion.

Lead (II) Phosphate nano particles were synthesized via chemical co precipitation method from Lead Nitrate and Sodium Phosphate. The formed nano particle is characterized by powder X-ray diffraction, scanning electron microscopy, Ultra-violet spectroscopy and Fourier transform infrared spectroscopy, confirmed the preferential growth of Lead (II) Phosphate nano particles that width is 41.09 nm. The SEM image shows the synthesized Lead (II) Phosphate show well crystallized particles with spherical morphology. The FTIR spectrum is used to study the stretching and bending frequencies of molecular functional groups in the sample. From UV spectrum, the band gap of Lead (II) Phosphate nano particles is found to be 3eV. From AAS studies it is found that the absorbance is directly proportional to the concentration. The linear fit indicates that lead (II) Phosphate nanoparticles have been distributed in proper proportion.

Water is important ingredient of widely used construction material concrete. Most of the specifications recommend potable water for concrete, imposes a heavy burden on the cost of production. The present study was an attempt to study the possibility of usage of treated wastewater for concrete preparation, so that the shortage and cost using potable water can be greatly reduced by determining the influence of wastewater on the strength of concrete. Wastewater from a near by wastewater treatment plant were collected and analyzed in terms of their physicochemical properties along with potable water for comparison purposes. The study reveals that the consistency of cement remains same for all types of mixing wastewater. There is an increase in initial setting time with deteriorating quality of mixing wastewater but the final setting time remains same. The compressive strength of concrete of tertiary treated wastewater is close to that of tap water but higher than that of PTWW & STWW. The study indicates that the use of tertiary treated wastewater will be an alternate to save the precious fresh water and also the cost of concrete production may be reduced.