Publication for Volume 4 Issue 3 is in process..
In different processes ranging from conversion, utilization & recovery of thermal energy in various industrial, commercial & domestic applications heat exchangers are used. Economical design of heat exchangers, which can help to utilize energy, use economical material and help in reducing cost should be achieved by increase in the performance of Heat exchanger. Use of Heat transfer enhancement techniques lead to increase in heat transfer coefficient but at the cost of increase in pressure drop. Therefore, while designing a heat exchanger, using any of these techniques, analysis of heat transfer rate & pressure drop needs to be done. To achieve high heat transfer rate in an existing or new heat exchanger several techniques have been proposed in recent years. This work presents the study of heat transfer enhancement of a circular heat pipe using nano particles produced as a result of wire electric discharge machining, collectively called as the colloidal solution of nanoparticles. A heat pipe is a simple heat transfer device that can transport large quantities of heat with a very small difference in temperature between the hot ends to the other end. In this case study, the concept of the evaporation of the working fluid inside the heat pipe is used to compare the heat carrying capacity of two heat pipes. The objective of this study is to compare the efficiency between the primary heat pipe with distilled water as the working fluid and the secondary heat pipe with colloidal Nano Fluid, produced as a result from wire electric discharge machining as the working medium. The heat pipe is divided into 2-sample specimen. First specimen of heat pipe using distilled water while the other one used colloidal Nano Fluid. These two heat pipes are built without the mesh wick and are dealing with inclination of angle to see the performance of the heat pipe. Both the heat pipes were built with the total length of 600 mm length and 16 mm diameter using copper as the pipe material. Gravity pumping was used with the inclination angle to pump back the working fluid to the evaporator section. The heat pipe was positioned at different angles of 0º, 45° and 90° with the horizontal. To achieve the objective of this study, both pipes were studied experimental to find the most efficiency between the primary heat pipe and the secondary heat pipe. The important parameter involves in the case study are the variation of Thermal Resistance and the Overall Heat Transfer Coefficient with the varying heat inputs to the heat pipes. After performing the experiments, the objective of this case study is achieved.
- Page(s): 01-06
- Date of Publication: 14 March 2019
- Kunal Mehra M.Tech Scholar, Laxmi Devi Institute of Engineering & Technology, Alwar -301028, India
- Ajay Kumar Mechanical Engineering Department, Laxmi Devi Institute of Engineering & Technology, Alwar -301028, India
. Peterson, G.P., 1994, An Introduction to Heat Pipes; Modeling, Testing and Applications, John Wiley & Sons. . Dunn, P.D., and Reay, D.A., 1986, Heat Pipes, Pergamon. . Nemec, P. Čaja, A. Heat transport nitrification of heat pipe. ActaMetallurgicaSlovaca Vol.15. No.1. TU Košice, 2009. . Swanson L. W.: Heat pipe, Heat and Mass Transfer, Mechanical Engineering Handbook, Ed. Frank Kreith Boca Raton: CRC Press LLC, 1999. . Holman, J.P, Heat Transfer, 5th Ed, McGraw-Hill Inc. 1981.
Kunal Mehra, Ajay Kumar "Analysis of Thermal Performance of a Characteristics Heat Pipe as an Efficient Heat Transfer Device with Colloidal Nanofluid" International Journal of Research and Innovation in Applied Science -IJRIAS vol.4 issue 3 March 2019, pp.01-06 URL: https://www.rsisinternational.org/journals/ijrias/DigitalLibrary/Vol.4&Issue3/01-06.pdf
The research was concerned with the effects of Geogebra Instructional Package on secondary school students achievement in Geometry in Makurdi Metropolis of Benue State, Nigeria. Two research questions were asked and answered while two hypotheses were formulated and tested at 0.05 level of significance. The design of the study was quasi-experimental design of pretest-post test non equivalent control group. The sample of the study was 205 students. The experimental group was taught using Geogebra Instructional package while the control group was taught using the expository method. The data collected at the end of the research was analysed using descriptive statistics of mean and standard deviation to answer research questions while the hypotheses were tested using analysis of covariance. The result of the study revealed that students taught geometry using Geogebra Instructional Package achieved higher mean scores than those taught using Expository method. The result also revealed no significant difference in the mean achievement scores of male and female students taught geometry using Geogebra Instructional Package.
- Page(s): 07-10
- Date of Publication: 15 March 2019
- Abari, M. TerseerFederal University of Technology, Minna, Nigeria
- Dr.( Mrs) Gimba, W. RukayatFederal University of Technology, Minna, Nigeria
- Dr. Hassan, A. AhmedFederal University of Technology, Minna, Nigeria
- Dr. Jiya, MFederal University of Technology, Minna, Nigeria
- Dr.(Mrs) Chado, AminaFederal University of Technology, Minna, Nigeria
- Dr. (Mrs.) Gana, S. CelinaFederal University of Technology, Minna, Nigeria
- Dr. Koroka, M.U.S.Federal University of Technology, Minna, Nigeria
. Gambari, A. I.I, Falode, C. O. & Adegbenro, D. A.(2014). The effectiveness of computer animation and geometry instructional model on mathematics achievement and retention on Junior Secondary School Students in Minna, Nigeria.European Journal of Science and Mathematics Education, 2(2), 127-146. . Hohenwarter, M., Hohenwarter, J., Kreis, Y., and Lavicza, Z. (2008). Teaching and learning calculus with free dynamic mathematics software GeoGebra. Paper presented at the 11th International Congress on Mathematical Education. Monterrey, Nuevo Leon, Mexico. . Hohenwarter, J., Hohenwarter, M. and Lavicza, Z. (2010). Evaluating difficulty levels of dynamic geometry software tools to enhance teachers' professional development. International Journal for Technology in Mathematics Education, 17(3), 127-134. . Keşan, C. and Çalişkan, S.(2013). The effect of learning geometry topics of 7th grade in primary Education with dynamic geometer’s sketchpad geometry Software to success and retention. The Turkish Online Journal of Educational Technology. 12(1);131-138. . Royati, A. S., Ahmad, F. M. & Rohani, A.T. (2010).The Effects of Audio-visual on Mathematics Achievement: Enlightening Coordinate Geometry Learning.International Conference on Mathematics Education Research 2010 (ICMER 2010).Institute for Mathematical Research, Faculty of Educational Studies, University Putra Malaysia. . Russel, D. (2014). What is Geometry? Retrieved from www.math.about.com/od/geometry/a/why geo.htm on 19th November 2016. . Zengin, Y & Kutluca, T. (2012). The effect of dynamic Mathematics Software geogebra on student achievement in teaching of trigonometry. Procedia.-Social and Behavioral Sciences. 31; 183-187.
Abari, M. Terseer; Dr.( Mrs) Gimba, W. Rukayat; Dr. Hassan, A. Ahmed; Dr. Jiya, M; Dr.(Mrs) Chado, Amina; Dr. (Mrs.) Gana, S. Celina; Dr. Koroka, M.U.S., "Effects of Geogebra Instructional Package on Secondary School Students Achievement in Geometry in Makurdi Metropolis of Benue State" International Journal of Research and Innovation in Applied Science -IJRIAS vol.4 issue 3 March 2019, pp.07-10 URL: https://www.rsisinternational.org/journals/ijrias/DigitalLibrary/Vol.4&Issue3/07-10.pdf
Although indwelling urinary catheterization is a medical intervention with well-defined risks. Despite these known disadvantages, urethral urinary catheterizations are frequently used without an appropriate indication such as acute urinary retention. The prevalence of Bacterial Isolates From Prostatitis patients using indwelling Urinary Catheters was carried out in Umuahia, Abia State using culture technique. 800 patients were examined for prostate specific antigens (PSA) using quantitative and qualitative tests, culture and antibiotic susceptibility tests were also done. Out of 800 patients tested for PSA test in Umuahia was 416 (52.0%) and 433 (54.1%) for quantitative and qualitative tests respectively. in Umuahia as 800 urine samples were cultured with 280(50.9%) isolates from uncatheterized patients and 210(84.0%) isolates from catheterized patient. The bacterial isolates from catheterized and uncatheterized patients were Escherichia coli 149 (30.4%), K. pneumoniae 84 (17.1%), S. aureus 105 (21.40%), S. faecalis 61 (12.4%), P. mirabilis 51 (10.4%) and P.aeruginosa 40 (8.7%). Higher bacterial loads were observed in the catheterized patient’s urine than in the uncatheterized patient’s urine. Ceftriaxone, Streptomycin, and Augumentine were the drugs of choice in the sensitivity tests while high antimicrobial resistant rates were observed with Ampiclox, Septrin and Amoxil. Generally, high prevalence rate of PSA and bacterial pathogens were reported in patients of higher age (50 and above years). Increase in age, low socio-economic status and poor environment dwellers were found as demographic risk in aggravating the chance of getting prostatitis in the research areas. This calls for awareness, diagnosis and proper medical checks for men of 50 years and above. This medical check will prevent the chance of developing prostatitis and other complications that may lead to infertility and inability to urinate.
- Page(s): 11-16
- Date of Publication: 18 March 2019
- Ogwuegbu, H.O Department of Microbiology, Abia State University Uturu, Nigeria
- Mbanaso, A.U Department of Medicine, Abia State University Uturu, Nigeria
- , Opara-Nadi, N. Department of Microbiology, Abia State University Uturu, Nigeria
- Nwokorie, C.C. Department of Microbiology, Abia State University Uturu, Nigeria
- Irogbeyi, L.A. Department of Pharmacology, Abia State University Uturu, Nigeria
. Cappuccino, J.G. & Sherman, N. (2014). Microbiology: A Laboratory Manual 10th Edition, USA. Pearson Education. . Cheng-Ching, W.U., Hung, Y.U., Chao-Ping, W.S. & Li-Fen L. U. (2015). Evaluation of a rapid quantitative determination method of PSA concentration with gold immunochromagraphic strips. Journal of Bio-Medical Central., 3:55-109. . Kalpana, R. (2016). Microorganisms and male infertility: possible pathophysiological mechanisms. Journal of Microbiology and Biotechnology Research., 20:41-52. . Kolawole, A.S., Kolawele, O.M., Kandaki-Oluremi, Y.T., Babantunde, S.K. & Darowade, K.A. (2009). Urinary tract infections (UTI) among patients attending Dalhatu Araf Specialist Hospital, Lafia, Nasarawa State, Nigeria. International Journal of Medicine and Medical Sciences., 1(5): 163-167. . Ku, J.H. (2005). Epidemiology risk factors for chronic prostatitis. International journal of Andrology., 28: 317-327. . Nickel, J.C. (2003)a. Classification and diagnosis of prostatitis: a gold standard? Journal of Andrologia., 35(3): 160-167. . Nickel, J.C. (2003)b. Clinical evaluation of the patient presenting with prostatitis. European Journal of Urology., 2(2): 11014. . Nicole, L.F. (2008). The prevention of Hospital acquired urinary tract infection. Clinical Infectious Diseases., 15(46): 251-253. . Ogwuegbu, H.O., Nwaugo, V.O., Uranta, D.M., Nwokorie, C.C. and Alaedu, A.O. (2018). Microorganisms Associated with Prostatitis Using indwelling Urinary catheters in Okigwe Imo State, Nigeria. International Journal of Microbiology and Biotechnology., 3(3): 83-88. . Sharp, V.J., Takacs, E.B., & Powell, C.R. (2010). Prostatitis: diagnosis and treatment. Journal of American Physician., 82: 397-406. . Stam, W.E. (2000). Catheter–associated urinary tract infections: epidemiology, pathogenesis and prevention. American Journal of Medicine., 91:1328-1334. . Stamm W.E. & Hooton T.M. (2003). Management of UTI in adult. England Journal of medicines., 329: 1328-1334 . Tain, P.J., Parada P. & Smith L.G. (2000). Overuse of the indwelling urinary tract catheter in hospitalized medical patients. Journal of international medicine., 155 (13): 1425-1429. . Vasudevan, R. (2014). Urinary tract infection. An overview of the infection and associated risk factors. Journal of Microbiology., (2): 10-15. . Warren, W. (2005). Catheter-associated urinary tract infection. International Journal of Antimicrobial Agents., 17:299-303.
Ogwuegbu, H.O, Mbanaso, A.U, Opara-Nadi, N., Nwokorie, C.C. and Irogbeyi, L.A. "The Prevalence of Bacterial Isolates from Prostatitis Patients Using Indwelling Urinary Catheters in Healing Cross Hospital Umuahia, Abia State, Nigeria" International Journal of Research and Innovation in Applied Science -IJRIAS vol.4 issue 3 March 2019, pp.11-16 URL: https://www.rsisinternational.org/journals/ijrias/DigitalLibrary/Vol.4&Issue3/11-16.pdf
In this paper, I analysis theoretically impact of Outsourcing on employment. I do it by viewing the literature reviews about the subject, in order to answer “what is the impact of outsourcing on employment”. Outsourcing found to reduce employment, but the impact varies according to measurement criteria. Outsourcing widens the gap between skilled and unskilled labor.
- Page(s): 17-18
- Date of Publication: 18 March 2019
- Laveena YadavAssistant Professor, Department of Management Studies, LIET, Alwar, Rajasthan, India
- Hitesh KhandelwalAssistant Professor, Department of Mechanical Engineering, LIET, Alwar, Rajasthan, India
. Douglas Brown and Scott Wilson, “The Black Book of Outsourcing: How to Manage the Changes, Challenges, and Opportunities”, ISBN 9780471718895, Wiley, 2005. . Ronan McIvor, “The Outsourcing Process: Strategies for Evaluation and Management”, ISBN 9781139444583, Cambridge University Press, 2005. . Simon Domberger, “The Contracting Organization: A Strategic Guide to Outsourcing: A Strategic Guide to Outsourcing”, ISBN 9780191525070, OUP Oxford, 1998. . L.B. Brown, “Outsourcing at LSU: an interview with Stanley Wilder”, Library Administration & Management, Vol. 12 No. 1, pp. 4‐6, 1998. . C. Fill and E. Visser, “The outsourcing dilemma: a composite approach to the make or buy decision”, Management Decision, Vol. 38 No. 1, 2000. . R. McIvor, “A practical framework for understanding the outsourcing process”, Supply Chain Management: An International Journal, Vol. 5 Issue: 1, pp. 22-36, 2000. . Z. Zhu, K. Hsu and J. Lillie, “Outsourcing – a strategic move: the process and the ingredients for success”, Management Decision, Vol. 39 Issue: 5, pp. 373-378, 2001. . M. Borman, “Identifying the factors motivating and shaping co-sourcing in the financial services sector”, Journal of Information Technology Management, vol. 17(3), pp. 12-25, 2006.
Laveena Yadav, Hitesh Khandelwal "Impact of Outsourcing Jobs on Local Economics" International Journal of Research and Innovation in Applied Science -IJRIAS vol.4 issue 3 March 2019, pp.17-18 URL: https://www.rsisinternational.org/journals/ijrias/DigitalLibrary/Vol.4&Issue3/17-18.pdf
Natarajan suggested and successfully applied the regressed model equation form, LnKP=aLn(10)+bLnT+c/T with a reported deviation of less than 5-percent from the JANAF Thermo-chemical Tables data, to predict the equilibrium constants in terms of pressure and mole concentrations of certain chemical species in chemical reactions, presented in tabular forms, for units in, atm, and mol/cm3, respectively. The attraction of the Natarajan model is the reduced uncertainties, and flexibility of computationally handling and presenting, in an easily analysable way, scaled thermo-chemical dataset, in possible selectivity control applications for real-time transaction response smart chemical sensors (RTTR-SCS). However, some important probable species in high temperature range, 1000 -to- 6000 K, combustion reactions such as, HCO, HO2, HNCO, NCN, NCO, NNH, and OH, were not considered in the Natarajan Tables. This contribution is an extension, and addition to the Natarajan Tables based on regressed data obtained from JANAF 1971 and 1998 Tables. There is indication from analysis, that at JANAF Tables, Log KP, breakaway negative -to- positive sign (or vice versa) transition points, the prediction uncertainties are higher, which hints possibly at temperature validity and avoidance limits in applications.
- Page(s): 19-27
- Date of Publication: 19 March 2019
- Tonye K. Jack Seltrolene Consulting, Port Harcourt, 50004, Rivers State, Nigeria
. Stull, D. R., and Prophet, H. (1971). JANAF Thermochemical Tables. US National Standard Reference Data System, National Bureau of Standard, NSRDS-NBS 37. . Benson, S. W., Golden, D. M., Lawrence, R. W., Shaw, R., and Woolfolk, R. W., (August 1975). Estimating the Kinetics of Combustion including Reactions involving Oxides of Nitrogen and Sulfur. US Environmental Protection Agency (EPA), EPA-600/2-75-019, 35-36. . Pitsch, H. (2014). Thermodynamics, Flame Temperature and Equilibrium. CEFRC Combustion Summer School, Institut für Technische Verbrennung, RWTH Aachen University. Available Online: https://www.princeton.edu/cefrc/files/2014/LectureNotes/Pitsch/Lecture2_Thermodynamics_2014.pdf. Last Accessed: December 6, 2018. . Peter, N., (2010). Combustion Theory. CEFRC Combustion Summer School, RWTH Aachen University. Available: https://www.itv.rwth-aachen.de/fileadmin/Downloads/Summerschools/Peters_summerschool_reference.pdf. Last Accessed: December 6, 2018. . Flagan, R. C., (1988). Fundamentals of Air Pollution Engineering, Prentice Hall. . Wilson, Wm. E., Jr., (1972). A Critical Review of the Gas-Phase Reaction Kinetics of the Hydroxyl Radical. Journal of Phy. Chem. Ref Data, 1, 2, 535-554. . Natarajan, K., (2015). Computing Equilibrium Constants of Chemical Reactions – A New Approach. International Journal of ChemTech Research, 7, 5, 2361-2367. . McKetta, J. J., Jr., (1999). Z-Factor (Gas Compressibility)-Errors to Zone Refining. Encyclopedia of Chemical Processing and Design, Vol. 68. . https://en.wikipedia.org/w/index.php?title=Equilibrium_constant&oldid=837511084. Last Accessed: May 8, 2018. . https://en.wikipedia.org/w/index.php?title=Reaction_quotient&oldid=836002499. Last Accessed: May 8, 2018. . Thermodynamic Notes, http://www.geol.ucsb.edu/faculty/hacker/ geo124T/lecture.html. Last Accessed: May 21, 2018. . Chase, M. W., Jr., (ed.) (1998). NIST-JANAF Thermochemical Tables. US National Standard Reference Data System . https://www.khanacademy.org/science/chemistry/periodic-table/periodic-table-trends-bonding/v/electron-affinity. . Jack, T. K., (2018). NOx Formation and Control: On Thermochemistry of NNH. International Journal of ChemTech Research, 11, 8, 98-107. . Burcat, A., and Ruscic, B. (September 2005). Third Millennium Ideal Gas and Condensed Phase Thermochemical Database for Combustion with Updates from Active Thermochemical Tables. Argonne National Laboratory and Technion-Israel Institute of Technology Joint Report ANL-05/20, TAE 960. . McBride, B. J., Gordon, S., and Reno, M. A. (February 2001). Thermodynamic Data of Fifty Reference Elements. NASA Technical Paper 3287/REV1. Available: http://www.grc.nasa.gov/ . Bortner, M. H., (May 1969). A Review of Rate Constants of Selected Reactions of Interest in Re-Entry Flow Fields in the Atmosphere. US National Bureau of Standards (NBS) Technical Note 484, 1-65.
Tonye K. Jack "On the New Approach to Calculating Equilibrium Constants in Chemical Reactions" International Journal of Research and Innovation in Applied Science -IJRIAS vol.4 issue 3 March 2019, pp.19-27 URL: https://www.rsisinternational.org/journals/ijrias/DigitalLibrary/Vol.4&Issue3/19-27.pdf