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Development of oyster (Ostreidae) shells as chalk

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creativework.keywordschalk, development, functional attributes, microstructural testing, oyster shell
dc.contributor.advisorGacayan, Daniel B.
dc.contributor.authorLacuata, Shaira Jane F.
dc.contributor.authorGatchallan, Sherilly G.
dc.contributor.authorPeralta, Hanna Sophia C.
dc.contributor.authorRimpillo, Ronalyn R.
dc.contributor.chairBayani, Keneth G.
dc.contributor.committeememberJavonitalla, Josephine G.
dc.contributor.committeememberHufana, Zhelyn A.
dc.contributor.committeememberQuinitip, Tiffany Ruth R.
dc.date.accessioned2026-04-16T18:07:36Z
dc.date.available2026-04-16T18:07:36Z
dc.date.issued2023-05
dc.descriptionFull text
dc.description.abstractOyster shell is a type of sea shell that has naturally occurring component of calcium carbonate, that is primarily used in making chalk. This study aimed to: standardize the formulation and process, determine the junctional attributes, microstructural qualities, and production cost of developed oyster shell chalk. The research design used were: Researchers used experimental method for the standardized formulation of oyster shells as chalk, in which researchers performed six different trials, and a descriptive study design is used for functional attributes of the oyster shell chalk for median computation. Treatment 2 has the highest median while Treatment 1 has the lowest median. The oyster shell chalk has a mean breaking strength of 10.3 N (load of 1.05 kg) and standard deviation of 2.84 N (load of 0.290 kg), ranges 11 mm in diameter and 84.1 mm long. The total production cost is comparable with the leading brands.
dc.format.extentxii, 64 p.: ill. (col.)
dc.identifier.citationLacuata, S. J. F., Gatchallan, S. G., Peralta, H. S C. & Rimpillo, R. R. (2023). Development of oyster (Ostreidae) shells as chalk. [Unpublished Undergraduate Thesis]. Don Mariano Marcos Memorial State University – Mid La Union Campus, City of San Fernando, La Union. Lakasa ti Sirib, DMMMSU Institutional Repository.
dc.identifier.urihttps://lakasa.dmmmsu.edu.ph/handle/123456789/1325
dc.language.isoen
dc.publisherDon Mariano Marcos Memorial State University – Mid La Union Campus
dc.rights.licenseCC BY 4.0
dc.sdgSDG 12
dc.subject.ddcOyster shell -- Chalks
dc.subject.ddcWriting materials – Chalk
dc.titleDevelopment of oyster (Ostreidae) shells as chalk
dc.typeThesis
dcterms.accessRightsOpen access
dspace.entity.typePublication
local.subject.scientificnameOstreidae
thesis.degree.disciplineCollege of Management
thesis.degree.levelUndergraduate
thesis.degree.nameBachelor of Science in Office Administration
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