000 03389nam a2200337 a 4500
003 OSt
005 20240404090608.0
008 070417s19uu xx 00 eng d
040 _cCvSU Main Campus Library
041 0 _aeng
082 0 4 _a553.68
_bAm1 2004
100 0 _aAmbata, Glen P.
_eauthor
_943824
245 1 0 _aProduction of chalk from crab (Scylla serrata) shells /
_cby Glen P. Ambata and Remerson L. Poblete.
260 0 _aIndang, Cavite :
_bCavite State University- Main Campus,
_c2004.
300 _axi, 33 pages :
_billustrations ;
_c28 cm.
336 _2rdacontent
_atext
337 _2rdamedia
_aunmediated
338 _2rdacarrier
_avolume
500 _aResearch Study (General Science curriculum) Cavite State University.
504 _aIncludes bibliographical references.
508 _aScience High School, College of Education (CED)
520 3 _aAmbata, Glen Pascual and Poblete, Remerson Layno, Applied Research III (General Science Curriculum), Laboratory School College of Education, Cavite State University, Indang, Cavite, April 2004, “Production of Chalk from Crab (Scylla serrata) Shells”. Adviser: Ms. Miriam C. Du. Mrs. Dulce Ramos The research study entitled “Production of Chalk from Crab (Scylla serrata) Shells” was conducted at 525 P. Burgos St. Indang, Cavite from June 2003 to November 2003. This was conducted to determine if the crab shells could be used in making chalk as a substitute to calcium carbonate and other chemicals. Generally, this study aimed to use crab shells in the manufacture of chalk. Four treatments replicated three times were used in the study: T, (30 grams of powdered crab shells + 100 ml of cassava sap); T2 (90 grams of powdered crab shells + 100 ml of cassava sap); T; (150 grams of powdered crab shells + 100 ml of cassava sap); and T, (210 grams of powdered crab shells + 100 ml of cassava sap). Complete Randomized Design (CRD) was used in the study. One — way analysis of Variance (ANOVA) was used to analyze the data for physical evaluation and Duncan’s Multiple Range Test (DMRT) for the comparison of treatments. It was found out that T, got the highest score in terms of texture (mean= 4.0000), brittleness (mean=4.2111), adherence, (mean=2.7222) and in general acceptability with the mean of 2.8889. On the other hand, T, got the mean score of 3.1222 in terms of compactness. Based on the results of the study, it can be concluded that crab shells can be used in the manufacture of chalk. Ninety grams of powdered crab shells: 100 ml cassava sap is the optimum ratio needed to produce a good quality chalk. The cost of the produced chalk is almost the same as the cost of the commercial chalk. Chalk from crab shells does not contain harmful chemicals that may cause breathing problems and skin allergies. Production of chalk from crab shells is inexpensive, simple and easy.
541 _cSubmitted to the University Library
_d
_eR-433
650 0 _aChalk
_914327
690 _91282
_aScience High School
_xGeneral Science Curriculum
700 1 _aPoblete, Remerson L.
_914016
_eauthor
700 _aRamos, Dulce L.
_929422
_eadviser
700 _aDup, Miriam C.
_943567
_eadviser
856 _uhttp://library.cvsu.edu.ph/cgi-bin/koha/opac-retrieve-file.pl?id=9accd5d7fa3479b6d5356d7151d4dcdb
_yClick here to view thesis abstract and table of contents
942 _2ddc
_cMAN
999 _c905
_d905