Archives-December 

The effect of the addition of safflower extract on the corrosion of ?-brass in nitric acid done by chemical method (WL), electrochemical method "electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, and electrochemical frequency modulation (EFM) technique". The efficiency of inhibition rise with increment the concentration inhibitor, but diminishes with expanding the temperature. The adsorption of safflower on the ?-metal surface takes as Temkin adsorption isotherm. Impact of the temperature on the consumption of metal in one molar nitric corrosive was additionally mulled over. Potentiodynamic polarization studies demonstrated that safflower concentrates is blended sort inhibitor and the outcomes got from the systems are in great understanding.

Urban spaces and the facades and physical elements of the city are the best things to lead us to a direct understanding of the city and whatever happens in it. Citizens interact with such spaces and find common points with other citizens. They experience the common events and a joint image is formed in their minds. The results of these common experiences and images can be called the identity of the city in the minds of its residents. The urban open spaces (i.e. the urban places for shopping, recreational activities, visiting, and gathering without any barrier at any time) are very effective on the formation of the collective identity between the citizens and on the solidarity of the urban identity. In case of Iran, a clear representation of such spaces can be found in the traditional bazaars. Iranian bazaars are the public attractiveness of the cities that call the people to come and spend their time. The Iranian old cities have been mainly commercial and merchandised cities and thus the bazaar used to be the backbone of the cities. The role of bazaar will be understood more clearly when we see that the main elements of the city, including the squares, mosques, schools, public houses, etc. were built beside the bazaars. The main subject of this research (i.e. traditional bazaar of Shiraz City) is located in Shiraz city, Fars Province of Iran. The main reason for choosing Shiraz is the fact that it is hold as the heart of Iran, i.e., between North, South, East, and West. Thus the potentials of the city can be conducted in a right commercial way.

In this work and experiment was carried out in order to find the value of energy gap of silicone, zener and light emitting diode (LED) diode using simple electric circuit.

Determination of suitable probability distribution function in among frequency distribution models in evaluating occurrences for any phenomena is very important. The gradient ratio is the one of the best important parameter for evaluation of envelope clogging. To conduct this research, data of each replicate was divided into four hourly periodic lengths of 24, 48, 72, and 96. Then, with analysis of data in time series according to HYFA software output and goodness fit of Relative Residual Square Mean, suitable frequency distribution function for each envelope was selected. Based on relative frequency, the best fitted distribution was found to be Three Parameter Log Normal distribution (Moment method) and Two Parameter Log Normal distribution (maximum likelihood method) for synthetic envelope of PP450, Normal distribution (Moment method and maximum likelihood method) for synthetic envelope of PP700, Three Parameter Log Normal distribution (Moment method) and Two Parameter Log Normal distribution (maximum likelihood method) for synthetic envelope of PP900 and Pearson type III distribution (Moment method) and Normal distribution (maximum likelihood method) for envelope of gravel.

Within a decade, the grammar learning process and learning outcomes at English education department students of IAIN Bukittinggi found some problems. The class was still held in lecturer-centered. The research design used is Research and Development (R&D). To develop the instructional product, the researcher applies Four-D Model by Thiagarajan et.al, that is Define, Design, Develop, and Disseminate. The product testing is carried out at the third semester English education department students of IAIN Bukittinggi. The instruments used in this research are interview, observation, tests and questionnaires. To qualify the three products, the experts of grammar for content, language and layout examine the validity, the practicality and the effectiveness of the textual enhancement model of grammar instruction, lecturer’s manual and students’ workbook. The research findings exhibit students’ need analysis and prototype model of TEBGIM.

Blue rubber bleb nevus syndrome (Cutaneous and digestive angiomatosis) is a vascular malformation that is not well known. The gastrointestinal lesions occurring during this syndrome are clinically more relevant than those of the skin and soft tissues. Adherence to standard surgical principles results in successful results with minimal morbidity.The diagnosis of Bean syndrome must be evoked in the presence of acute intestinal occlusion and angiomatous skin lesions.We report a particular case of this syndrome by its late revelation following a volvulus on a huge bowel vascular lesion, giving the opportunity to a review of the literature.

Mycelial biomass of the selected macro fungi namely Pleurotus florida and Calocybe indica were tested for the dye decolorisation using spectrophotmetry over a period of seven days. Among the two mushrooms selected, Pleurotus florida recorded maximum decolourisation potential with carbon source. The decolorisation efficiency of Pleurotus florida was observed to be 29.70%,50.39% and 64.15% in treatments with 1%,2%,3% carbon source, while Calocybe indica recorded decolourisation of 27.52%,35.44% and 41.38% in 1%,2%,3% carbon source.The study revealed that the macro fungi give scope for decolorisation of dye effluent.

Market interactions among stock market of the world have necessitated the relationship among different financial markets driven by market liberalization and international pressure to lower trade barriers, which have enhanced international linkages between capital markets. This study examines the dynamic causal linkage among the selected equity market in Africa using the generalized Vector autoregressive (VAR) framework that produces forecast error variance decompositions and also accounts for correlated shocks using historically observed distribution of the errors. The time series data from investing.com over 01/02/2004-01/07/2016 are employ for the study. The findings on dynamic return linkages is that there is no strong significant returns linkages among the African selected markets. Controlling for the influence of advance market (UK and US). The results show that the South African market has more link with international markets than the Nigerian market. A crucial finding is the lowest spillover index recorded through variance decomposition and impulse response among the African markets. This is an indication of possible gain in African market and in line the portfolio theory. The finding of this study have important implications for policymakers.

Ultrasonic velocity and density have been determined in cerium chloride and aqueous formic acid at 30oC,35oC and40oC. Different acoustic parameters were calculated using measured value of ultrasonic velocity and density at these three temperatures. These data provide useful information about change in interaction at different temperatures. The main target of this paper is to highlight the type and extent of molecular interaction between component molecules and to reflect effect of on them.

This study was conducted to investigate the perceptions of male and female students about effects of use of Information and Communication Technology. The research study was a descriptive in its nature. The targeted population was the male and female students of the public sector universities. The purposive sampling technique was used to gather data from the faculty of social sciences of two public sector universities. Data were collected by administering a questionnaire that based on Likert- five point scales. The data were tabulated, analyzed and interpreted. The Chi Square and Mean score were applied to analyze the data. Present study showed the results that Role of Information Communication and Technology is very important to improve learning. Both type of respondents agreed that ICT is an agent of change. Information and Communication Technology helps to integrate the learning and technology. Information and Communication Technology enhances communication ability in students.