Journal of Biomedical Engineering and Technology

ISSN (Print): 2373-129X

ISSN (Online): 2373-1303

Editor-in-Chief: Ahmed Al-Jumaily

Website: http://www.sciepub.com/journal/JBET

   

Article

Predictability of Sulphur Removal Efficiency during Processing of Iron Ore Designated for Production of Orthopedics Devices

1Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria

2Federal Medical Centre Abakiliki, Ebonyi State, Nigeria

3Department of Mechanical Engineering, Imo State University, Owerri, Nigeria

4Department of Industrial Physics, Ebonyi State University, Abakiliki, Nigeria


Journal of Biomedical Engineering and Technology. 2015, 3(1), 8-14
doi: 10.12691/jbet-3-1-2
Copyright © 2015 Science and Education Publishing

Cite this paper:
C. I. Nwoye, C. U. Nwoye, S. O. Nwakpa, E. C. D. Nwoye, O. C. A. Nwoye, B. C. Chukwudi, N. E. Idenyi. Predictability of Sulphur Removal Efficiency during Processing of Iron Ore Designated for Production of Orthopedics Devices. Journal of Biomedical Engineering and Technology. 2015; 3(1):8-14. doi: 10.12691/jbet-3-1-2.

Correspondence to: C.  I. Nwoye, Department of Metallurgical and Materials Engineering, Nnamdi Azikiwe University, Awka, Nigeria. Email: nwoyennike@gmail.com

Abstract

Predictability of sulphur removal efficiency of iron ore (designated for production of orthopedic devices) has carried out based treatment temperature and mass-input of KClO3 used as oxidizing agent. Results generated from experiment, derived model and regression model show that sulphur removal efficiencies increases with increase in both treatment temperature and mass-input of KClO3 up to 800°C and 12g of KClO3 respectively. A two- factorial empirical model was derived, validated and used for the predictive analysis. The validity of the derived model expressed as: ₰ = 1.5 x 10-11 ɤ4.3318 + 5.6655 ϑ - 25.237 was rooted in the model core expression ₰ + 25.237 = 1.5 x 10-11 ɤ4.3318 + 5.6655 ϑ , where ₰, ɤ and ϑ are the sulphur removal efficiency, treatment temperature and mass-input of KClO3 respectively. Both sides of the core expression are correspondingly approximately equal. This research presents the possibility of limiting the Processed Iron Ore Remnant Sulphur (PIORS) through strategized input of ɤ and ϑ during processing of iron ore designated for orthopedic devices. This was geared towards enhancing the durability and biocompatibility of medical devices made of steel since PIORS is deleterious to the mechanical properties and functional performance of the steel-made medical devices. Sulphur removal efficiency per unit rise in treatment temperature & per unit mass-input of KClO3 as well as standard error incurred in predicting the sulphur removal efficiency for each value of the treatment temperature & mass-input of KClO3 as obtained from experimental, derived model and regression model predicted results were 0.2422, 0.2659 and 0.2493 % / °C & 11.0109, 12.0865 and 11.3315 % /g as well as 6.5587, 6.3878 and 3.3787 x 10-5 & 3.2057, 2.6827 and 3.5936% respectively. The correlations between sulphur removal efficiency and treatment temperature & per unit mass-input of KClO3 as obtained from experiment, derived model and regression model indicated were all > 0.98. Deviational analysis revealed that the maximum deviation of model-predicted sulphur removal efficiency from the experimental results is 12.33%. This invariably translated into over 87% operational confidence for the derived model as well as over 0.87 dependency coefficients of sulphur removal efficiency on treatment temperature and KClO3 addition.

Keywords

References

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[6]  Nwoye, C. I. (2009). Process Analysis and Mechanism of Desulphurization of Agbaja Iron Oxide Ore. Journal of Metallurgical and Materials Engineering, 8:27-32.
 
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[8]  Nwoye, C. I., Nwakwuo, C. C., Onugha, E., Obiji, S., Mbuka, I. E., Obasi, G. C. (2010). Model for Predicting the Concentration of Sulphur Removed during Gaseous State Desulphurization Iron Oxide Ore. Journal of Engineering and Earth Science, 4:37-43.
 
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Article

Design of Microfluidic Sensing and Transport Device

1Department of Engineering, UPM, Serdang, Malaysia

2Department of Engineering, University of Sunderland U.K


Journal of Biomedical Engineering and Technology. 2015, 3(1), 15-20
doi: 10.12691/jbet-3-1-3
Copyright © 2016 Science and Education Publishing

Cite this paper:
Masoumeh Asgharighajari, Nurul Amziah, Nasri Sulaiman, Sherif Adebayo Sodeinde. Design of Microfluidic Sensing and Transport Device. Journal of Biomedical Engineering and Technology. 2015; 3(1):15-20. doi: 10.12691/jbet-3-1-3.

Correspondence to: Masoumeh  Asgharighajari, Department of Engineering, UPM, Serdang, Malaysia. Email: marinaasghari@yahoo.com

Abstract

This study presents detection of microfluidic droplet using an impedance measurement, study carried out with available commercial material such as copper. Model of channel and electrode, geometry a sweep from different point for sensor optimization and simulation. The study focus on admittance measurement for modeling compare to other available design with capacitive measurement. The model become more easy and in-expensive as less circuit required for electronics model. The study indicates how peak voltage can implement to measure speed of a fluid in a channel.

Keywords

References

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[8]  Reza Nosrati1, Mohammad Hadigol, Arian Jafari, Mehrdad Raisee and Ahamad Nourbakhs. “Numerical Investigation of Electroosmotic Mixing in Microchannels with Heterogeneous Zeta Potential.” (American Scientific Publishers) 3 (2011): 1-9.
 
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Article

Influence of Gender on the Activity of Agonist-Antagonist Muscles during Maximum Knee and Ankle Contractions

1Biomedical Engineering Department, North Eastern Hill University (NEHU), Shillong, Meghalaya, India

2Department of Electrical & Electronics Engineering, Graphic Era University, Dehradun, Uttrakhand, India


Journal of Biomedical Engineering and Technology. 2016, 4(1), 1-6
doi: 10.12691/jbet-4-1-1
Copyright © 2016 Science and Education Publishing

Cite this paper:
Manvinder Kaur, Shilpi Mathur, Dinesh Bhatia, Deepak Joshi. Influence of Gender on the Activity of Agonist-Antagonist Muscles during Maximum Knee and Ankle Contractions. Journal of Biomedical Engineering and Technology. 2016; 4(1):1-6. doi: 10.12691/jbet-4-1-1.

Correspondence to: Dinesh  Bhatia, Biomedical Engineering Department, North Eastern Hill University (NEHU), Shillong, Meghalaya, India. Email: bhatiadinesh@rediffmail.com

Abstract

Muscle mechanical energy expenditure reflects the neuro-motor strategies employed by the nervous system to analyze human locomotion tasks and is directly related to its efficiency. The purpose of this study was to investigate the influence of gender on the activity of agonist-antagonist muscles during maximum knee and ankle contraction in males (n1=10) and females (n2=10) adult population. Different movements of knee and ankle used for the maximum contractions were knee flexion and extension, ankle plantar flexion and dorsiflexion. The agonist-antagonist muscles considered for the study were Rectus femoris (Quadriceps Muscle group), Biceps femoris (Hamstring Muscle group), Tibialis Anterior and Soleus. The statistical analysis applied was post hoc analysis to determine least significant differences among the male and female groups. The different groups for classifying these movements were Female Dominant Leg (FDL), Female Non Dominant Leg (FNDL), Male Dominant Leg (MDL) and Male Non Dominant Leg (MNDL). The results showed no significant differences (p≥0.1) in the muscle energy expenditure for different lower limb activities among gender. In addition to this, knee flexion was found to be the activity with minimum energy expenditure in healthy males and females. Active agonist-antagonist muscle pairs during knee and ankle contractions were found to have minimum mechanical energy expenditure. This study is a part of a larger intervention study that is being carried out for designing feedback based FES devices.

Keywords

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