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International Journal of Natural Science and Engineering

IJNSE
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Published by Universitas Pendidikan Ganesha

ISSN : 26151383 EISSN : 25496395 DOI : -

Core Subject : Engineering,

Engineering

International Journal of Natural Sciences and Engineering (IJNSE) is an independent, quarterly basis online & print version, open access, peer reviewed, non-profit journal that publishes original research, short communications, review articles or essays, and book reviews relevant to Natural Sciences and Engineering. IJNSE is published by the Universitas Pendidikan Ganesha (Undiksha), Indonesia.

Arjuna Subject : -

Articles 216 Documents

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Effect of Salt Concentration and Salting Time on Salting Catfish (Clarias gariepinus) Lestari, Ani; Karmelia, Mila; Asnita, Yuli; Sakdiah, Halimatus; Putri, Syafia Eka; Syamsi, Nur; Marta, Eni
International Journal of Natural Science and Engineering Vol. 6 No. 2 (2022): Juli
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

The community's processing of dried salted fish is still traditional, so the use of concentration and duration of salting differs based on the individual. The consumer acceptance or preference level for this dried salted catfish must be considered. This study aimed to analyze the effect of salt on drying fish in the sun to test the resistance and quality of fish. There were two combined treatment factors: salt concentration (15%, 25%, 35%) and salting time (5 hours, 7 hours, and 9 hours). The hedonic test was carried out using the Kruskal-Wallis method and SPSS 16 to see the texture, appearance, and aroma scores. It was continued with Duncan's further test if it was significantly different. To see the best products use the Bayes method. The results showed that the best product for processing dried salted catfish was the 15% salt concentration treatment and 7 hours of salting time, which obtained an organoleptic score of 7 with quality specifications for appearance intact, clean, slightly dull, taste quality very good, species-specific, without additional taste. , the quality of the texture is not too hard and not brittle.

Identification of Land Fire Risk Areas with Random Forest Using Landsat Image Data 8 OLI Radandima, Grandy Umbu Endalu Radandima
International Journal of Natural Science and Engineering Vol. 6 No. 2 (2022): Juli
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Land fire is a complex and serious problem affecting several human life sectors. Stimulating the occurrence of land fires caused by long dry seasons and erratic rainy seasons causes plants to dry up and die. Illegal land burning by irresponsible people for expansion and other interests. This study uses quantitative methods. The variables used are vegetation index values obtained from Landsat 8 OLI images. The result of this research is that data classified using the random forest algorithm at RStudio produces a default number of 500 trees, and the number of variables tested in each split is 2. So, the estimated error rate of 2 out of the bag is 0.47%. Prediction and confusion matrix - train 403 data are less risky "0" (middle risk) of a fire, and there are 22 data of high risk of "1" (high risk) of a fire, with an accuracy value of 0.9914, 1. While the second prediction of the confusion matrix - test data, there are 167 data less risky "0" (middle risk) of fire. There is 1 data with a high risk of “1” (high risk) of a fire. There are seven high-risk data "1" (high risk) of fire, with an accuracy value of 0.9943, indicating a more accurate assessment of model accuracy, and the range is still good, around 96% to 99%. There are several incorrect classifications in the prediction and confusion matrix – train, which is slightly higher than the predictions of the two-confusion matrix – test, and sensitivity: 1.0000, which is the same in both prediction and confusion matrix – train & tes.

Contribution of Early Breastfeeding Initiation to Onset of Lactation in Postpartum Mothers and Breastfeeding in Midwives Independent Practice Luh Mertasari; Made Juliani
International Journal of Natural Science and Engineering Vol. 6 No. 2 (2022): Juli
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

After the baby is born, the production and release of breast milk do not occur immediately because there is still a transition of hormones in the mother’s body. Early Breastfeeding Initiation (IMD) is crucial in stimulating breast milk production. This study aimed to analyze the contribution of IMD to the onset of lactation. This type of research is pre-experimental with a one-shot case study design. The population in the implementation of this study were all couples of post-partum and breastfeeding mothers and their babies who gave birth and met the inclusion criteria. This study used a sample of 36 people. Collecting data was carried out using the observation and post-test methods. The Spearman rank correlation test analyzed data. The analysis results show a p-value of 0.000 0.05 and a correlation coefficient of 0.601, so H0 is rejected, and H1 is accepted. It shows a strong, significant, and unidirectional contribution between the implementation of IMD and the onset of lactation. The results of this study can then be used as a reference for further breastfeeding guidance strategies both in the third trimester of pregnancy and in the postpartum period.

The Relationship of Fast Food Towards The Event of Acne Vulgaris in Students Laila Fajri; Prima Minerva
International Journal of Natural Science and Engineering Vol. 6 No. 2 (2022): Juli
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Acne vulgaris is a skin disease caused by inflammation of the polysebaceous follicles (skin oil glands). Acne, if left untreated, can lead to depression and a crisis of confidence for the sufferer. Acne vulgaris can occur at any age due to several factors, one of which is food. This study aimed to analyze the level of acne vulgaris, determine the consumption pattern of fast food, and the relationship between fast food and the incidence of acne (acne vulgaris) in students. This type of research is analytic with a cross-sectional approach. The research sample was 52 people using a consecutive sampling method. Data analysis used univariate analysis and bivariate analysis with a chi-square test. The results showed that the highest acne vulgaris was in the moderate category, namely 23 people (44.2%). Fast food consumption patterns were in a bad category, namely 22 people (42.3%), so there was a relationship with a significance value of 0.018 < 0 0.05 between fast food consumption behavior and the incidence of acne (acne vulgaris) in students. It was concluded that the highest incidence of acne (acne vulgaris) was in the moderate category, and the highest consumption pattern of fast food was in the bad category. There was a positive and significant relationship between fast food consumption behavior and the incidence of acne (acne vulgaris) in college students.

Formulation and Analysis of Alcohol Content in Pineapple Infused Arak Bali with Gas Chromatography Ratih, Gusti Ayu Made; Habibah, Nur
International Journal of Natural Science and Engineering Vol. 6 No. 3 (2022): October
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Gastronomic drinks are one of the local cultures that have an important role in the development of the tourism world, one of which is Arak Bali. Various products of Arak Bali infused began to be developed to enrich the flavor. One of the potential ingredients to increase scent and flavor is pineapple. This study was conducted to determine the most popular formulation and the alcohol content of Pineapple Infused Arak Bali as a new safe gastronomic drink in accordance with government regulations. The type of research used True experimental with Posttest Only Control Group Design. The sample used was pineapple infused Arak Bali that was formulated into 5 concentration variations. Furthermore, the alcohol content analysis was carried out using Gas Chromatography method. Sample F4 was selected based on organoleptic tests from 30 panelists as the most popular formula. Analysis of alcohol content showed that both samples were negative for methanol while the ethanol content in FD (34.22%) was classified as group C liquor and FU (18.08%) was classified as group B in accordance with government regulations.

Implementation of Fuzzy C-Means in Clustering Stunting Prone Areas Christyanti, Ratna Dwi; Sulaiman, Dady; Utomo, Adymas Putro; Ayyub, Muhammad
International Journal of Natural Science and Engineering Vol. 6 No. 3 (2022): October
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v6i3.53048

Stunting is a chronic nutritional problem that occurs in toddlers, defined based on height for age (TB/U) which is less than two negative standard deviations or a toddler's height is shorter than it should be. Stunting is a chronic nutritional problem in toddlers, characterized by a shorter height than the height of children his age. Bulungan Regency is one of 160 urban regencies in Indonesia that is intervened to focus on reducing stunting. Based on these problems, this study aims to determine the cluster of stunting vulnerabilities in Bulungan Regency. The method used is Fuzzy C-Means (FCM). The results of this study are that the area in cluster 1 has a high level of vulnerability because it has the lowest level of adequacy of posyandu (active) and high incidence of LBW in infants, cluster 2 has a moderate level of vulnerability because it has an adequate level of puskesmas, adequacy of posyandu (active), the adequacy of doctors, the adequacy of nutritionists, the adequacy of midwives, the percentage of moderate LBW, and cluster 3 have a low level of vulnerability because they have a low average percentage of LBW and a high level of adequacy of posyandu (active) in the area.

The Role of Organization Maturity Level to Improve the Information System Capability Dantes, Gede Rasben
International Journal of Natural Science and Engineering Vol. 6 No. 3 (2022): October
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Organization maturity level is rarely considered when adopted a new technology. Aim of this study is to find the role of organization maturity level in order to improve the information system (IS) capability through ERP implementation approach. There are four variables involved on this study, namely: ERP drives Business Process Reengineering (BPR) (X1), BPR drives ERP (X2) as independent variables, organization maturity level (Y) as a moderating variable, and IS capability (Y1) as a dependent variable. We applied the path analysis to identify direct and indirect effect between ERP implementation approach and IS capability through organization maturity level. There are 277 key individuals from 37 different organization which is represented 10 industrial sectors responded to the questionnaires. The response rate for this survey research is 39.57% from 700 questionnaires which were distributed. Survey result shows that organization maturity level has a major role which can improve to better IS capability in organization. It is shown that a direct effect between X1 and Y1 (ρY1X1=0.331) is lower than an indirect effect between X1 and Y1 through Y (ρYX1 and ρYY1 = 0.369). Whereas, direct effect between X2 and Y1 (ρY1X2=0.096) is lower than indirect effect between X2 and Y1 through Y (ρYX2 and ρYY1 = 0.233). It can be concluded that the organization has to put a more effort on organization maturity level in order to gain a better IS capability, especially when it uses BPR drives ERP approach to implement the ERP system.

Handbook of Occupational Safety and Health as a Guiding Supplement for Occupational Safety and Health in Chemical Laboratory Sudiana, Ketut
International Journal of Natural Science and Engineering Vol. 6 No. 3 (2022): October
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Chemical education laboratories have a higher risk of work accidents than laboratories for industrial activities. Many work accidents occur in chemical laboratories. Two factors that cause work accidents are unsafe behavior and unsafe conditions. Occupational safety and health in the laboratory are crucial to creating a comfortable, safe work environment to prevent or minimize workplace accidents. This study aims to produce a handbook of occupational safety and health in chemical laboratories as a guiding supplement for chemistry practicum to create occupational safety and health in chemical laboratories. This research is a research and development (r&d) with a 4-d development model consisting of 4 main stages: define, design, develop and disseminate. Research is limited to the development stage, which ends with a practicality test. Based on expert judgment, it was found that the occupational safety and health handbook in the chemical laboratory are very valid in terms of content (3.9), language (4.0), and media (4.0), from a maximum score of 4. From the readability test, all respondents obtained students understand the content or information presented in the chemical laboratory's occupational health and safety handbook. Furthermore, through the practicality test, it was obtained that lecturers, laboratory assistants, and students gave an assessment that the occupational safety and health handbook in the chemical laboratory each scored 4.0 and 3.9, which means it is very practical. This research concludes that the chemical laboratory's occupational safety and health guidebook as a guiding supplement for chemistry practicum is valid to be implemented from the aspect of content, language, media, and readability and is very practical in its use.

3D Multimedia E-Book Based on Mobile Learning Basic Competency of Artistic Hair Coloring Astuti, Murni; Thaitami, Siti Hajar
International Journal of Natural Science and Engineering Vol. 6 No. 3 (2022): October
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v6i3.53593

The problem of research is the low understanding of students in the subject of hair trimming and coloring which has an impact on student learning outcomes. The purpose of this study was to develop an e-book-based learning media on the subject matter of double application hair coloring at SMK. This type of research is research and development using a 4-D model. The population of this research is the students of class XI KC II SMK totaling 32 people. The data collection technique used a validity and practicality questionnaire. The data analysis technique is by calculating the score of the e-book media assessment from the questionnaire given and categorized according to the interpretation obtained. The results of the media validation study were 0.89 (very valid category) and 0.82 material validation (very valid category). The results of the practicality of student responses were 86.07% (very practical category) and from the teacher's response of 87.2 (very practical category). E-book-based learning can be said to be valid and practical to be used as teaching materials in the classroom on hair trimming and coloring subjects to improve student learning outcomes.

3D Multimedia E-Book Based on Mobile Learning Basic Competency of Artistic Hair Coloring Astuti, Murni; Thaitami, Siti Hajar
International Journal of Natural Science and Engineering Vol. 7 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v7i1.53662

The use of appropriate learning media will greatly assist in the learning process. The problem of research is the low understanding of students in the subject of hair trimming and coloring which has an impact on student learning outcomes. The purpose of this study was to develop an e-book-based learning media on the subject matter of double-application hair coloring. This type of research is research and development using a 4-D model. The population of this research is the students totaling 32 people. The data collection technique used a validity and practicality questionnaire. The data analysis technique is by calculating the score of the e-book media assessment from the questionnaire given and categorizing it according to the interpretation obtained. The results of the media validation study were 0.89 (very valid category) and 0.82 material validation (very valid category). The results of the practicality of student responses were 86.07% (very practical category) and from the teacher's response 87.2 (very practical category). E-book-based learning can be said to be valid and practical to be used as teaching materials in the classroom on hair trimming and coloring subjects to improve student learning outcomes.

Page 17 of 22 | Total Record : 216

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