Open Access Original Research Article

Evaluation of the Impact of Corrosion Attack in Carbon Steel C-1040 Marine Piping System in Two Media

Onoriode K. Idiapho, William E. Odinikuku, Onomine M. Akusu

Journal of Engineering Research and Reports, Page 1-10
DOI: 10.9734/jerr/2019/v4i116892

The focus of this study was to investigate the impact of corrosion attack in carbon steel C-1040 marine piping system using weight loss method. Two carbon steel specimens (coupons) of cylindrical shape were selected and weighed before they were exposed to two different test solutions (corrosion media) at a concentration of 0.2M and 0.04M in seawater and freshwater respectively at room temperature for eight weeks. The weight loss was taken as the difference in the weight of the coupons before and after immersion in the two different test solutions. The corrosion rates of the coupons were calculated from the weight loss obtained. The experimental result from weight loss method was calculated using engineering equation solver (EES). The weight loss and rate of corrosion of the two coupons varied as higher corrosion rate and weight losses were observed in coupon 2. The weight loss and corrosion rate in 0.2M concentration of coupon 2 in seawater environment increased from 0.04 g to 0.53 g, 0.007133 mmpy to 0.0181 mmpy while coupon 1 showed an increase from 0.01 g to 0.25 g, 0.0035 mmpy to 0.005573 mmpy was observed in 0.04M concentration in freshwater environment. This shows that carbon steel metal was more susceptible to corrosion attack in seawater environment than in the freshwater environment. The micrograph results of coupon 2 before and after immersion in 0.2M of seawater for about 1344 hrs showed evidence of uniform (general) corrosion as the coupon surface was rough and jarring. The grain boundaries of the surface morphology also revealed general corrosion effects on the coupon after immersion as the film present on the surface was cracked as a result of corrosion impact.

Open Access Original Research Article

Efficiency Improvement for Ordinary Least Square and Orthogonal Regression-An Application in Chemical Engineering

Khurshid A. Bhat

Journal of Engineering Research and Reports, Page 1-5
DOI: 10.9734/jerr/2019/v4i116893

Regression analysis plays indispensable role in QSAR/QSPR, chemical Engineering, science & technology and research projects. Best fit regression models are constantly a challenge to the researchers, efforts are taken to minimize the error components so that the predictability and efficiency of models increase. Presence of high error component eventually upset the future research and forecasting of the facts. In this paper a technique is introduced that reduces the error component and improves the predictability and efficiency of the model.

Open Access Original Research Article

Studies of the Compositional Characteristics of Commercial Roasted Beet Root Chips Snacks

B. Hossain, N. Kamrul, B. Biswas

Journal of Engineering Research and Reports, Page 1-8
DOI: 10.9734/jerr/2019/v4i116894

Beta vulgaris L. (beetroot) contains high amounts of active substances. The amounts of various compounds sucrose, glucose, fructose, micronutrients and physical properties were found in roasted beet root chips of two varieties cultivated in Jessore (BRJS) and Kustia (BRKS), Bangladesh. Large differences were found between the varieties for some nutrients (such as sucrose), whereas others showed only minor variation (physical properties and acceptability).

The study aims to estimate the composition characteristic of commercial roasted beet root chips snacks. The total sucrose content was found to range between 73.6 g/kg and 82.6 g/ kg of roasted chips samples. Other detected glucose, which accounted for up to 4.1% to 3.2% and fructose 1.31% to 1.21%. The % CV of sucrose, glucose and fructose were 14.5%, 43.3% and 52.6% respectively. Physicochemical properties of beet root Chips was studied and is shown in Table 4 for accepted sample BRTJS. The average weight of one piece of beetroot chips was 2.22 gm, diameter 5.15 cm, thickness 0.35 cm, height 0.7 cm and bulk density was 0.35g/cm3. The average apparent moisture diffusivity was calculated as 5.35X10-9 m 2s -1 with standard deviation 2.43X10-9 m 2s -1. The highest value of moisture diffusivity recorded as 1.9X10-9 of the MHSDT method and lowest value of 2.25X10-9. Proximate values was 2.2% moisture, 0.7% ash, 17% protein, 1.25% fat, 1.7% crude fiber and 74.02% carbohydrate respectively. Sensory evaluation for acceptances of the sample-RBJS got a highest sensorial score (9.0) for all parameters like the color (9.2), taste (9.25), texture (8.5), after taste (7.0) and overall acceptability (9.0) than other BRKS sample.

Open Access Original Research Article

Neonatal Incubator Embedded Temperature Observation and Monitoring Using GSM

Zaid H. Al-Sawaff, Yahya Zakariya Yahya, Fatma Kandemirli

Journal of Engineering Research and Reports, Page 1-9
DOI: 10.9734/jerr/2019/v4i116895

In order to reduce the risks of death rates, neglecting by the observers, and sometimes the little number of the medical staff in hospital, A monitoring system based microcontroller in neonatal incubator was developed in this article. An interfacing process is made between the infant, infant incubator, and the computer, by taking the temperature readings and send the results to doctor's or the person who in- charge's phone through Short Messages Service, and to a personal computer PC, with sound alarm on the incubator, every given period of time; A temperature sensor is interfaced with a configured single inline module SIM of phone, the temperature reading that obtained from interfacing method is combined with the readings of the incubator sensor, then the final result will be taken from the microcontroller because it will be more accurate than the incubator’s thermometer.

This system was designed only to check and give an alarm if there was any unaccepted change in temperature due to the normal temperature ranges.

Open Access Review Article

MEMS Technology: A Review

Manish Kumar Mishra, Vikas Dubey, P. M. Mishra, Isharat Khan

Journal of Engineering Research and Reports, Page 1-24
DOI: 10.9734/jerr/2019/v4i116891

This review article through light on a highly promising & demanding technology, which is set to revolutionize nearly every product category in present era, while discussing the Concept, Design & Development, Fabrication techniques and applications of micro electro-mechanical systems (MEMS) based Devices or systems. Microelectromechanical system discloses outstanding flexibility and adaptability in miniaturization devices followed by their compact dimension, low power consumption, and fine performance. The MEMS devices have numerous and very high potentials of creating a new field of applications for mobile equipment’s with increased flexibility & more reliability. This work deals with research carried out for the development of MEMS based sensors & Actuators and appropriate uses of MEMS. This work carries information’s regarding subsequent commercial and real life applications of MEMS and discusses various recent technological innovations carried out with their advantages & disadvantages. This work also describes the historical development of micro-electromechanical system (MEMS) sensor technology.