• The Journal of the Korea Contents Association
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• v.20 no.3
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• pp.613-626
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• 2020

This study reconsiders covenant theology through the relationship between law and grace. In order to do this, it first evaluates whether the Sinaitic Covenant is a covenant of grace or a covenant of works. This has been in discussion for a long period of time among theologians, yet is far from settled. Traditional studies form a wide spectrum, which can be divided into at least four major branches. First, the Sinaitic Covenant is the same as the covenant of grace. Second, the Sinaitic Covenant is the same as the covenant of works. Third, the Sinaitic Covenant forms a third, independent category of covenant. Fourth, the Sinaitic Covenant exists in harmony with the covenant of grace. Each category is summarized along with its representative proponents. Also, even though the term covenant of works is not accepted as prevalently among modern theologians, observations is made on how each category connects to and continues in modern theological discussions regarding law. Special emphasis is given to the fourth category and the fourth perspective on law with respect to how they differ from the others in viewing the relationship between law and gospel. Moreover, recognizing that the unique understanding of the fourth view grows out of a careful observation of the Biblical text, the structural similarities between the Sinaitic Covenant and other Biblical covenants are compared based on the Biblical text. Based on this comparison, it is observed that God's grace and human duty coexist in several Bible covenants including the Sinaitic and New Testament covenants. From this observation, it is proved that conditionality regarding covenant fulfillment exists in them all. This conditionality does not entail from exclusiveness on the part of God, but from the weakness on the part of humans. However, some unconditional covenants, albeit few in number, can be found in the Bible. Therefore, the difference between unconditional covenants and conditional covenants is discussed. Lastly, the proper place and role of grace in covenants is studied.

• Advances in nano research
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• v.9 no.1
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• pp.59-67
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• 2020

Filter cake formation during rotary drilling operation is an unavoidable scenario, hence there is need for constant improvement in the approaches used in monitoring the cake thickness growth in order to prevent drill-string sticking. This study proposes an improved model that predicts the growth of mud cake thickness overtime with the consideration of the addition of nanoparticles in the formulated drilling fluid system. Ferric oxide, titanium dioxide and copper oxide nanoparticles were used in varying amounts (2 g, 4 g and 6 g), and filtration data were obtained from the HPHT filtration test. The filter cakes formed were further analyzed with scanning electron microscope to obtain the morphological characteristics. The data obtained was used to validate the new filtrate loss model. This model specifically presents the concept of time variation in filter cake formation as against the previous works of constant and definite time. Regression coefficient which is a statistical measure was used to validate the new model and the predicted results were compared with the API model. The new model showed R² values of 99.9%, and the predictions from the proposed filtration model can be said to be more closely related to the experimental data than that predicted from the API model from the SSE and RMSE results.

• Advances in materials Research
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• v.6 no.2
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• pp.221-231
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• 2017

The concept design of the typha strawbale masonry came up as a result of the urgent demand for a means of constructing sustainable buildings, both in rural and urban settlement, not only suitable for dwellers but for keeping farm products by structures that will respond to the environmental eco-system, coupled with the fact that such structures are also affordable, durable and easy to maintain during their service period. The effects of contact between plaster and the stacked strawbale of a masonry needs to be established and design optimization for durability and stability of the masonry be obtained. The assessment will involve the application of plaster materials (cement and natural earth) to the wall specimen panels. Past works have shown that plastered strawbale walls have adequate resistance against the appropriate vertical loads, and further showed that the earth plaster can bear higher stress than the cement plastered straw bale. There is the implication that the collapse or response of the earth-strawbale wall is significantly higher compared to that of cement-strawbale from other straw-based masonries. Therefore the allowable stresses of plastered typha strawbale shall be predicted for their optimum values using SAP2000. The stress stability of each masonry is obtained by analytical model using the best fit variables for the wall height and thickness.