Dwi Handayani
@unusa.ac.id
PUBLIC HEALTH
Universitas Nahdlatul Ulama Surabaya
EDUCATION
Master of Epidemiology
RESEARCH INTERESTS
Surveillance epidemiology
Epidemiology social
Public Health
Scopus Publications
Scopus Publications
Mursyidul Ibad, Indah Lutfiya, Dwi Handayani, Abdul Hakim Zakkiy Fasya, Diyah Herowati, and Maya Purnia Sari
AIP Publishing
Dwi Handayani and Nurul Jannatul Firdausi
AIP Publishing
A. N. Kamarudzaman, Siti Nur Ain Che Adan, Z. Hassan, M. Wahab, S. Z. Makhtar, N. Seman, M. Faizal, A. Jalil, D. Handayani and A. Syafiuddin
AMG Transcend Association
The application of the biosorption process and agricultural waste to treat heavy metals has drawn much attention. This method seems to be a more economical, environmentally friendly, and simple way for removing heavy metals from effluents. The study was conducted to explore the efficiency of the biosorption process utilizing spent mushroom compost to remove copper (II) and iron (II) from synthetic wastewater. Biosorption studies at different operating parameters, such as biosorbent dosage (1.0 – 5.0 g), pH (pH 4 – 8), contact time (1 - 30 minutes), and initial heavy metal concentration (10 - 100 mg/L), were conducted in batch experiments. The highest performance for copper (II) and iron (II) biosorption was found at 5.0 g biosorbent dosage of spent mushroom compost, unadjusted pH 6, 10 minutes of contact time, and 10 mg/L of initial concentration. The study was well fitted to the Langmuir isotherm model (R2 > 0.95) for copper (II) and iron (II) biosorption, which are much greater compared to the Freundlich model. The study is also very well suited to the pseudo-second-order (R2 > 0.999) than the pseudo-first-order kinetic models. In conclusion, the spent mushroom compost has the potential to be an effective biosorbent for removing copper (II) and iron (II) from synthetic wastewater.
Su-Huan Kow, M. R. Fahmi, C. Z. Abidin, Najihah Abdul, Rashid, N. Ibrahim, A. H. Ibrahim, S. Ong, E. Wikurendra and D. Handayani
AMG Transcend Association
Landfill leachate is a critical environmental issue that should be adequately treated to prevent it from spreading to the environment. This study explored the influence of raw leachate matrix and treated leachate matrix on O3, O3/H2O2, and O3/PS performance. O3 and AOPs were conducted in a laboratory-scale batch reactor. The findings showed the degradation of p-cresol, COD, and humic substances was much slower in treated leachate matrix than in raw leachate matrix. However, color was found easier to remove in treated leachate. The results revealed a synergic effect between molecular O3 and dissolved organic matter in the raw leachate as the O3 performance was enhanced in the presence of raw leachate matrix, except for color removal. The highest degradation of more than 90% was achieved in O3/H2O2 to remove COD, p-cresol, and humic substances, although it is the most affected by the leachate matrix. This study provides vital insight into the notable performance of O3/PS in color removal regardless of the influence of leachate matrix, suggesting that the sulfate radical-induced oxidation outperformed O3 and O3/H2O2 in reducing nitrogen-containing compounds.
Putri Alifia Nikmaturrochmah, Dwi Handayani, Mursyidul Ibad, and Abdul Hakim Zakkiy Fasya
EDP Sciences
Tracing is one of the points in 3T that is highlighted in the Covid-19 response. This tracing activity is very important because confirmed cases can transmit the disease from 2 days before to 14 days after the onset of symptoms. In November 2020 the Ministry of Health created an information system to strengthen the surveillance system in tackling Covid-19, especially in contact tracing activities called Silacak. This study aims to analyze the acceptance of the Silacak version 3.0 application based on the Technology Acceptance Model (TAM) theory at the Surabaya City Primary Health Care. This research method is descriptive quantitative with a cross sectional approach. The sample in this study were tracing officers at the Surabaya City Primary Health Care with a total of 55 respondents. The sampling technique used was cluster random sampling. Data analysis in the form of univariate analysis. The results showed that perceived convenience was in good criteria (100%), perceived usefulness in good criteria (92.7%) and in sufficient criteria (7.3%), user attitudes in good criteria (94.5%) and in sufficient criteria (5.5%), behavioral interest in good criteria (100%). The conclusion of this study is that the acceptance of the Silacak application in Covid-19 contact tracing activities based on the technology acceptance model (TAM) theory in Surabaya City is considered good. Which means that tracing officers have accepted the Silacak application well to assist in contact tracing activities. To maintain good acceptance of the Silacak application, it is hoped that the development of the Silacak application will continue to be carried out so as to minimize the occurrence of system errors.
Nur Masruroh, Abdul Hakim Zakkiy Fasya, Dwi Handayani, and Andreas Putro Ragil Santoso
DiscoverSys, Inc.
Introduction: Maternal and child health problems (MCH) are still a health problem in Indonesia. The high rate of maternal and child mortality requires intensive intervention and monitoring by the health department through health facilities available in the community. The recording and reporting of the MCH program at the Jagir and Wonokromo Health Centers has not been well documented because most of the MCH program recording and reporting is done manually. The purpose of this research is to produce a model of recording and reporting information system that is useful in handling the recording and reporting process of the integrated MCH program from the Independent Midwife Practice to the Puskesmas. Method: The method used in the development of this software is the Scrum Management Framework. The result of this research is the SISKIA (Maternal and Child Health Information and Surveillance System) software application which is integrated from the Independent Midwife Practice to the Puskesmas which can be used to manage maternal and child health data. Results: The SISKIA software application makes it easier to map Maternal and Child Health data, including in high-risk cases, in order to get health services according to the schedule determined by the midwife. SISKIA can directly assess the condition of mothers and children reported by the midwife and can be accurately displayed on the map included in SISKIA installed at the Jagir and Wonokromo Health Centers. Mobilization of the entire community in reducing MMR and IMR in the Jagir and Wonokromo Health Centers can be carried out by monitoring maternal health conditions in the surrounding environment by using this software application. Conclusion: The Maternal and Child Health Information and Surveillance System (SISKIA) has proven useful for obtaining regular and up-to-date maternal and child health data.
Dwi Handayani and Nurul Jannatul Firdausi
DiscoverSys, Inc.
Introduction: The allocation of village funds to the health sector focused on reducing nutritional problems and involving the village in controlling non-natural disasters caused by COVID-19. The study aimed to analyze the implication of the village fund toward public health performance in the pandemic era. Methods: Ecological analysis was conducted using secondary data from the East Java Health Profile 2020. The sample was 29 districts of East Java, where all the villages receive village funds. Apart from village fund utilization as the dependent variable, the independent variable consists of nutritional status, active Posyandu, case of COVID-19 and recovery rate of COVID-19. Data were analyzed by univariate and bivariate. The bivariate analysis was performed using the chi-squared test. Results: Undernourished and wasting were silent health burdens in the pandemic. The pandemic also made the active Posyandu is lower. High attention to Kediri dan Jombang was grouped to vulnerable health areas. Statistically, no correlation between the village fund utilization with public health improvement in the pandemic era Conclusion: Although there is no statistical correlation, nutrition issues and the impact of using village funds on health must be a concern. An in-depth evaluation needs to be carried out on the use of village funds to get clear implications for public health
The present study aimed to synthesize hydroxyapatite (HAp) from milkfish (Chanos chanos) bone by simple heat treatments ranging from 600 to 800 °C. The yield and color of synthesized powders before and after heat treatment were analyzed. The synthesized powders were characterized using Fourier transform infrared spectroscopy (FTIR) to identify the functional groups and X-ray diffraction (XRD) was employed to identify phase and crystallinity properties. This study found that the yield percentages were found to be approximately 50%. The FTIR characteristics exhibited the phosphate and carbonate groups at high temperatures (≥600 °C). In general, this study confirmed that the well-crystallized HAp can be synthesized by thermal treatment at a temperature of 160 °C for 48 h.