Synergistic corrosion inhibition of mild steel by some Mercaptobenzidazol compounds with halide ions in sulfuric acid solution
The corrosion and synergistic inhibition behaviour of mild steel in H2SO4 (pH=1) in the presence of 2 mercapto Benzidazol (MBI), 2 Mercapto Benzithiazol (MBT) and 2 Mercapto 5 Methylbenzimidazol (MMBI) and potassium chloride (KCl), potassium Bromide (KBr) and potassium iodide (KI) was investigated using weight loss measurements, potentiodynamic polarization measurements and electrochemical impedance measurements. The inhibition efficiency has been found to increase with inhibitor concentration. All the three inhibitors function through adsorption followed Langmuir isotherm and made contribution with physical adsorption. It has been found the addition of potassium halides enhanced the inhibition action and the maximum enhancement has been obtained in case of the KI compared to other halides for each inhibitor. The inhibition system composed by 500 ppm MBT and 700 ppm KI offered maximum corrosion protection (~96%). On the other hand, it was found that the inhibiting effect of MBI, MBT and MMBI decreased with exposure period and temperature of the corrosion medium. The potentiodynamic results showed that these compounds suppressed both cathodic and anodic processes; preferentially acting on cathodic areas. The presence of these inhibiting species decreased the double layer capacitance and increased the charge transfer resistance, derived from Nyquist plots obtained from impedance studies. The comparative FTIR studies between pure compound and respective metal surface product indicated the presence of inhibitor in the metal surface product obtained after exposure in inhibited solutions. SEM analysis suggested that the metal had been protected from the aggressive corrosion because of the addition of the inhibitors on the surface.
Please Login using your Registered Email ID and Password to download this PDF.
This article is not included in your organization's subscription.The requested content cannot be downloaded.Please contact Journal office.Click the Close button to further process.
[PDF]
Synthesis and biological evaluation of novel fused heterocyclic derivatives
The reaction of 3-Methyl-1-phenyl- 1H-pyrazol -5-amine(1) with 3-(5-Arylfuran-2-yl)-1-arylprop-2-en-1-one(2a-l), formed a novel heterocyclic compounds, 6-(5-Arylfuran-2-yl)-3-methyl-1-phenyl-4-(4-substituedphenyl)-1H-pyrazolo[3,4-b]pyridine 3(a-l). The structures of all the compounds series (3a-l) were characterized analytically. The compounds were also monitored for anti microbial activity.
Please Login using your Registered Email ID and Password to download this PDF.
This article is not included in your organization's subscription.The requested content cannot be downloaded.Please contact Journal office.Click the Close button to further process.
[PDF]
Synthesis, Spectral Studies and Biological evoluation of 3-[4-(1-acetyl-5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl)phenyl]-6,8-dibromo-2-methylquinazolin-4-one derivatives
Synthesis of new series of 3-[4-(1-acetyl-5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl)phenyl]-6,8-dibromo-2-methylquinazolin-4-one has been achieved by the refluxation of 6,8-dibromo-3-{4-[5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl]phenyl}-2-methylquinazolin-4-one with Glycial acetic acid for three hours. The intermediate have been synthesized by refluxation of 6,8-dibromo-3-{4-[3-(substitutedphenyl)prop-2-enoyl]phenyl}-2-methylquinazolin-4-one (0.01M) and 99% hydrazine hydrate (0.015M) by using ethanol (50ml) as a solvent with various aldehydes. The chemical structures of synthesized acetyl pyrazoline derivatives were characterized by their physical constants and spectral data. The new acetyl pyrazoline derivatives were screened for their antimicrobial activities against several bacterial and fungal species.
Please Login using your Registered Email ID and Password to download this PDF.
This article is not included in your organization's subscription.The requested content cannot be downloaded.Please contact Journal office.Click the Close button to further process.
[PDF]
Synthesis, spectroscopic characterization and In-vitro antibacterial activity of some cobalt(II) complexes and adducts
Cobalt(II) complexes with 2,4-pentanedione, salicylaldehyde and 4,4,4-trifluoro-1-(2-Naphthyl)-1,3-butanedione(tfnb) as primary ligand, ethylenediamine, 2,2'-bipyridine and 1,10-phenanthroline as secondary ligand have been synthesized and characterized by metal analysis, infrared, electronic spectral studies, conductance, magnetic susceptibility measurements and antimicrobial studies. The conductivity measurement in nitromethane indicates that the complexes and adducts are non-electrolytes while the different shifts of the carbonyl frequencies were revealed by the infrared spectral measurements. The electronic measurements are indicative of a probable six-coordinate octahedral geometry for all the cobalt(II) compounds except [Co(tfnb)2] with a probable four-coordinate square planar geometry. The ligands and the cobalt(II) compounds were screened for in vitro antimicrobial activity against ten microorganisms. [Co(tfnb)2Bipy] and [Co(tfnb)2en] showed more promising antimicrobial than antifungal activity.
Please Login using your Registered Email ID and Password to download this PDF.
This article is not included in your organization's subscription.The requested content cannot be downloaded.Please contact Journal office.Click the Close button to further process.
[PDF]
Talent management and employee productivity in selected banks in Anambra State
This work examined the effect of talent management on employee productivity in selected banks in Anambra State. The study reviewed relevant conceptual, theoretical and empirical literatures. It was anchored on management process approach and human capital theory. Talent Retention, performance management systems, training and development and talent attraction were employed as the explanatory variables while employee productivity was the dependent variable. The study adopted survey research design. The population of the study comprised 353 staff of the selected banks in Anambra State. The sample size was 353(using the entire population). Questionnaire was employed as the main instrument of data collection. The data generated were analyzed using frequency, percentage analysis, descriptive statistics, correlation analysis and multiple regression analysis. The study found that talent retention had a significant influence on employee productivity. Performance management systems had a significant effect on employee productivity. Training and development had a significant influence on employee productivity and talent attraction had a significant effect on employee productivity. The study concluded that talent management had a significant effect on employee productivity. The study therefore recommended that management should establish talent retention strategies and make them known to all employees. Management and employees should be involved in the entire process of performance appraisal. To enhance employee productivity, it is imperative that the organization focuses on training and development programs that are not only essential but enhance employees’ competitiveness. Programs should be designed by both managers and employees. Talent attraction such as competitive salary packages and rewards should be established as a policy in every organization.
Please Login using your Registered Email ID and Password to download this PDF.
This article is not included in your organization's subscription.The requested content cannot be downloaded.Please contact Journal office.Click the Close button to further process.
[PDF]
Tenability of decoupling hypothesis in India
The world economy collapsed into steep recession in the final quarter of 2008 with global real GDP dropping at a 6 percent annual rate. This was undoubtedly the sharpest decline in world output and especially in world industrial production and world trade of the postwar era, with virtually all countries participating in the downturn and many registering record quarterly declines in real GDP .the global economic contraction continued through the first quarter of 2009, although perhaps at a somewhat slower pace than the preceding quarter. This recession in world economy has also initiated a discussion among economist regarding synchronization of various economies of the world and recession in one country bringing effects in other. In economics Decoupling Hypothesis rejects linkage between world economy and economy of a particular country . The present paper aims to find tenability of decoupling Hypothesis in India and finds correlation between recession in world economies and Indian Economy
Please Login using your Registered Email ID and Password to download this PDF.
This article is not included in your organization's subscription.The requested content cannot be downloaded.Please contact Journal office.Click the Close button to further process.
[PDF]
The Flexing Fatigue Properties of Filled Rubbery Compounds under Constant and Variable Amplitude Loading
Crack growth characteristics of rubbery materials are an important factor in determining the strength and durability of the materials. The present work studied three stocks composed of Natural Rubber (NR), Styrene Butadiene Rubber (SBR) and Polybutadiene Rubber (BRcis) filled with carbon black N330. Three percentages of (NR/SBR/BRcis) were studied, namely (40/60/0), (40/50/10) and (40/40/20). The intent was to develop the Standard Italian Perilli Recipe (SPR) for Truck Tires Sidewall manufactured in Al-Dewaniya Tires Factory that have (30NR/70SBR) filled with carbon black N550. The results of constant amplitude loading have verified the applicability of the Paris law to the flexing fatigue behaviour of truck tire sidewall components. The accumulative fatigue damage was studied by the application of Miner’s rule to variable amplitude loading and gave unacceptable safe results at both sequence (L-H) and (H-L). The recipe that has (NR/SBR/BRcis) blending with percentages of (40/50/10) was generally the best in combined properties.
Please Login using your Registered Email ID and Password to download this PDF.
This article is not included in your organization's subscription.The requested content cannot be downloaded.Please contact Journal office.Click the Close button to further process.
[PDF]
The Impact of Texting/SMS Language on Academic Writing of Students- What do we need to panic about?
The growing concern about the profuse use of texting endangering the standard forms in language prompted the present research to determine the presence or absence of SMS features in the academic writing of the participants. Triangulation was used for data collection i.e. questionnaires for learners and educators and samples of the learners’ English written work were examined for SMS features. Suppliance in Obligatory Context was used for data recording. Simple average and ratio were used for descriptive analysis of the data. Contrary to the expectation, there were no significant evidences of these features in the sample. It seems being proficient in standard forms, these learners are context conscious and can switch to the appropriate register or style when writing formally .Thus the present study has de mystified the popular belief about texting adversely affecting writing and thus destroying Standard English. Moreover, the evidences of one punctuation mark used in place of another indicate there can be other factors like carelessness or lack of knowledge of students and the lack of training, feedback or emphasis by educators or the system. So the matter of concern should be the general neglect of punctuation even out of the context of texting.
Please Login using your Registered Email ID and Password to download this PDF.
This article is not included in your organization's subscription.The requested content cannot be downloaded.Please contact Journal office.Click the Close button to further process.
[PDF]
The Influence of Personal Factors and Job Satisfaction on Marital Quality among Muslim Working Women
Married women who work face various challenges in managing both sides of the world. Performing both tasks demand high degree of commitment and the responsibilities that need to be performed may vary across family life cycle. Success in one domain may influence the other. This study examined the relationships between personal factors, job satisfaction and marital quality among respondents from different stages of family life cycle. Participants were 235 married working women from four districts in Selangor, whose husbands residing together with them at the time of the study. Self-administered questionnaire was used for data collection. The results indicate that there are significant differences in marital quality and job satisfaction between the different stages of life cycle. Women who have more children, older, and have long-term marriage reported lower marital quality. It is also noted that higher educated women tend to have high marital quality while increased in job satisfaction would ensure a better quality marriage among the respondents. Future studies need to consider using longitudinal data to fully understand the impact of job satisfaction on marital quality across the life cycle.
Please Login using your Registered Email ID and Password to download this PDF.
This article is not included in your organization's subscription.The requested content cannot be downloaded.Please contact Journal office.Click the Close button to further process.
[PDF]
Undergraduate medical laboratory training in Kenya: A personal view
This article reviews about the medical laboratory training in Kenya.
Please Login using your Registered Email ID and Password to download this PDF.
This article is not included in your organization's subscription.The requested content cannot be downloaded.Please contact Journal office.Click the Close button to further process.
[PDF]