Article Per Year (5 Year)
p-Index From 2021 - 2026
0.817
P-Index
This Author published in this journals
All Journal International Journal of Health, Economics, and Social Sciences (IJHESS)
Herlina Jusuf
Department of Public Health, Universitas Negeri Gorontalo, Indonesia
Economics, Econometrics & Finance Public Health Social Sciences

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Differences in the Effectiveness of Moringa Seed Powder (Moringa oleifera) and Tamarind (Tamarindus indica) in Reducing Chemical Oxygen Demand (COD) Levels Sri Abel W Tahir; Herlina Jusuf; Ayu Rofia Nurfadillah
International Journal of Health, Economics, and Social Sciences (IJHESS) (Special Issue) - International Journal of Health, Economics, and Social Sciences (IJHESS) January 2
Publisher : Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56338/ijhess.v8i1.9979

Abstract

Industrial tofu liquid waste is waste produced from the tofu production process, such as soy washing and boiling, which has the characteristics of brownish-yellow, pungent stench and contains high organic matter. Tofu industrial liquid waste contains Chemical Oxygen Demand (COD) levels. The purpose of the study was to analyze the difference between moringa seed powder, tamarind seed powder and the combination of the two on the decrease in Chemical Oxygen Demand (COD) levels in tofu industrial liquid waste. The type of laboratory experiment research with a Complete Random Design (RAL) research design uses moringa seed powder, tamarind and a combination of the two with a dose variation of 3 grams, 4 grams and 5 grams. The sample is 6 liters of tofu wastewater obtained using the grab sample technique. The test used was Kruskal-Waliis The initial COD level in this study was 1800 mg/L The results of this study showed that the initial COD level in tofu liquid waste was 1800 mg/L. The effectiveness of coagulants in reducing COD levels was 5 grams of moringa powder, 5 grams of tamarind and a combination of 5 grams with a percentage reduction of 85%, 89% and 90% respectively. There was no difference in decrease in each dose used to lower COD levels (p-value = 0.368). It is recommended to test other variables such as sedimentation time, as well as stirring variations.
Sick Building Syndrome Incidence by Age and Work Period: A Regression Analysis Herlina Jusuf; Sylva Flora Ninta Tarigan; Hairun Nisa Yunus; Ramly Abudi; Nikmatini Arsad; Amanda Adityaningrum
International Journal of Health, Economics, and Social Sciences (IJHESS) Vol. 6 No. 3: July 2024 - International Journal of Health, Economics, and Social Sciences (IJHESS)
Publisher : Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56338/ijhess.v6i3.5686

Abstract

Many nonspecific symptoms of illness can occur as a result of exposure to specific harmful agents at certain workplaces, which is commonly referred to as Sick Building Syndrome (SBS). Several factors may contribute to the incidence of SBS, such as an individual’s age and work period. This research aims to determine the impact of age and work period on the incidence of SBS among employees at Telkom Gorontalo’s IT department. Cross-sectional observations were carried out in this research. Researchers conducted saturation sampling (total sampling) using all of Telkom Gorontalo’s IT employees as a sample population. Following this, 35 IT employees were used as samples. According to the analysis results, among the 35 IT employees working for Telkom Gorontalo, 27 had SBS incidents. In addition, out of 35 IT employees, 28 were under 40, 27 had standard working hours (work for 8 hours), and 14 had worked at Telkom Gorontalo for less than three years. A logistic regression analysis revealed that age significantly contributed to SBS incidence among Telkom Gorontalo’s IT employees (p-value = 0,001). Furthermore, the R-Square value was calculated using logistic regression, which is 46,45%.
Effectiveness Of Using Rice Husk As A Bioadsorbent On Amonia (NH3) And Nitrite (NO2-) Levels In Liquid Waste Of The Tofu Industry Dea Dwi Saputri; Herlina Jusuf; Tri Septian Maksum
International Journal of Health, Economics, and Social Sciences (IJHESS) (Special Issue) - International Journal of Health, Economics, and Social Sciences (IJHESS) - January
Publisher : Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56338/ijhess.v7i1.6980

Abstract

Tofu industry liquid waste contains ammonia (NH3) and nitrite (NO2-) compounds which can cause pollution if released into the environment without prior processing. Rice husks can be used to make active carbon which acts as a bioadsorbent against various contaminants which is cheap and easy to obtain. The research aims to test the effectiveness of using rice husks in doses of 5 grams, 10 grams and 15 grams as a bioadsorbent on NH3 and NO2- levels in liquid waste at the Rina Tofu Factory. This type of quasi-experimental research with a Completely Randomized Design (CRD) approach. Determination of NH3 and NO2- levels using the spectrophotometric method with three replications. Data were analyzed using the One-Way ANOVA test (? = 5%). The research results showed that the initial concentration of NH3 was 0.16 mg/L and fluctuated after contact with rice husks (5 gram dose: RI = 0.13 mg/L, RII = 0.15 mg/L, RIII = 0.25 mg/L; 10 gram dose: RI = 0.21 mg/L, RII = 0.27 mg/L, RIII = 0.12 mg/L dose 15 grams: RI = 0.32 mg/L, RII = 0.26 mg/L, RIII = 0.30 mg/L). Meanwhile, the initial concentration of NO2- was 0.043 mg/L and increased after contact with rice husks (5 gram dose: RI = 0.091mg/L, RII = 0.138 mg/L, RIII = 0.125 mg/L; 10 gram dose: RI = 0.117 mg/L, RII = 0.151 mg/L, RIII = 0.122 mg/L; 15 gram dose: RI = 0.112 mg/L, RII = 0.137 mg/L, RIII = 0.126 mg/L). There is no difference in the effectiveness of using rice husks on NH3 (?-value = 0.114) and NO2- (?-value = 0.750) levels in liquid waste from the tofu industry. Further research needs to be carried out regarding variations in contact time between rice husks and liquid waste from the tofu industry.
Analysis of Work Shifts and Mental Workload with Work Fatigue in Water Treatment Plant Operators at Perumdam Muara Tirta Gorontalo City Using NASA-TLX and SOFI Methods Ramadhan Utiarahman; Herlina Jusuf; Tri Septian Maksum
International Journal of Health, Economics, and Social Sciences (IJHESS) (Special Issue) - International Journal of Health, Economics, and Social Sciences (IJHESS)
Publisher : Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56338/ijhess.v7i2.7293

Abstract

Work fatigue is a condition of workers who are weakened to do a job and have an impact on decreasing work productivity. Factors that trigger work fatigue include internal factors (age, gender, work position) and external factors (workload, length of work, work period, work shift and work environment). The purpose of this research was to analyze work shifts and mental workload with work fatigue in Water Treatment Plant operators at Perumdam Muara Tirta Gorontalo City using the NASA-TLX and SOFI methods. The type of research used was analytic observational with a cross-sectional research design. The research instrument used the NASA-TLX and SOFI questionnaires. Data were analyzed using the Spearman’s Rank correlation test. The results of the study of work shifts of Water Treatment Plant operators using the fast rotation shift system. Mental workload was mostly in the moderate category with 20 operators (51.3%) and work fatigue was mostly in the moderate category with 26 operators (66.7%). There is a strong relationship between work shifts and work fatigue (?-value = 0.000; r = 0.653) and there is a quite strong relationship between mental workload and work fatigue (?-value = 0.008; r = 0.417). It is recommended that operators be able to adjust their working hours properly to the demands of duties and responsibilities outside of work.
Co-Authors Amanda Adityaningrum Ayu Rofia Nurfadillah Dea Dwi Saputri Hairun Nisa Yunus Nikmatini Arsad Ramadhan Utiarahman Ramly Abudi Sri Abel W Tahir Sylva Flora Ninta Tarigan Tri Septian Maksum