Analisa Penyimpangan Sinyal GPS Pada Share Location di Urban Area

This research arose because there was an error or shift from the share location on the smartphone. As for evaluating the accuracy of share location with several variations of smartphones that are usually used by goods delivery services using WhatsApp and Telegram applications using four android smartphones by comparing RMSE and CDF values. The results show that the average RMSE WhatsApp error is 11-21 meters, while Telegram is 16-37 meters. WhatsApp's CDF on S4 shows the lowest error distribution around a low of less than 20 meters, while Telegram's PDF shows an error distribution of around 30 meters. In the CDF analysis, WhatsApp showed a faster distribution reaching a value of 1, indicating higher accuracy, while Telegram had a slower and wider distribution, indicating lower instability and accuracy

Intervensi Berbasis Kelompok: Sebuah Upaya Peningkatan Literasi Kesehatan Publik Terkait Depresi Maternal

Background Maternal mental health during pregnancy and postpartum is a crucial factor impacting the well-being of both mother and baby. Maternal depression can occur during pregnancy (antenatal depression) or after delivery (postpartum depression). Antenatal depression can affect various aspects of maternal health, including nutritional status, which is a crucial factor in maintaining maternal health and fetal development. Furthermore, approximately 33% of women with postpartum depression have symptom onset during pregnancy, and 27% even before pregnancy. Health promotion through seminars or group-based interventions can significantly improve participants' knowledge levels over a period of time. Considering the importance of health promotion efforts as a preventative measure against maternal depression and the limited research evaluating knowledge retention of pregnant and postpartum mothers after group-based interventions such as health seminars, this study was conducted to assess maternal knowledge retention after two months of seminars on maternal depression. Methods The research design used in this study was a quasi-experimental design. Initial measurements were taken by assessing posttest 1 scores immediately after the seminar and compared with posttest 2 scores measured two months after the seminar. Results The decrease in posttest 2 scores compared to posttest 1 was less than 40% (p-value <0.05), indicating that a two-month period is still ideal for maintaining respondents' knowledge. Factors influencing the study's outcomes included respondents' age, education level, and gestational status. Conclusion Therefore, the seminar method is considered appropriate for increasing public literacy regarding maternal depression

Pemijahan Semi Buatan dengan Teknik Striping Pada Ikan Lele (Clarias gariepinus)

Freshwater fish, catfish (Clarias gariepinus) is one type of fish for consumption that has high demand. However, catfish production has decreased over the past three years due to constraints in the provision of seeds, especially due to seasonal spawning. This study aims to overcome these constraints through artificial spawning techniques with ovaprim hormone injection and stripping methods. The activity was carried out at the Lingsar Fish Seed Center (BBI), West Lombok in July–August 2024. The process includes pond preparation, broodstock selection, hormone injection, stripping, egg hatching, nursery, and larval maintenance. The results showed that the number of eggs obtained was 61,128, with a hatching rate of 79.99% and a larval survival rate of 72.94%. These results indicate that the artificial spawning method with ovaprim hormone is effective in increasing catfish seed production, and is able to produce seeds in optimal quantity and quality

Spatial Distribution and Utilization of Marine Habitats by Green Turtle (Chelonia mydas) and Hawksbill Turtle (Eretmochelys imbricata) in the Gili Matra Island Marine Protected Area

Sea turtles are one of the key biota in coastal and marine ecosystems whose existence is not only ecologically important, but also holds social, cultural, and economic value. Indonesia, as the largest archipelagic country in the world, is home to six of the world’s seven sea turtle species, making it a globally significant habitat for the sea turtle life cycle. The Gili Matra Marine Protected Area, encompassing the three islands of Gili Trawangan, Gili Meno, and Gili Air, is one of the strategic regions with high potential for sea turtle conservation. This study aims to document and analyze the spatial distribution and habitat use of green turtles (Chelonia mydas) and hawksbill turtles (Eretmochelys imbricata) in the Gili Matra Marine Protected Area. Data collection was carried out during the period of September to October 2024, adjusted to weather conditions and water visibility. The method used was the Underwater Turtle Visual Census Methodology. The composition of sea turtle species and habitat characteristics were analyzed using descriptive analysis to summarize the patterns of species presence, habitat types, and environmental conditions observed during the survey. The findings indicate that the area supports both species, with sea turtles observed at various depths (9–16 meters) across multiple dive sites. The predominance of female individuals and the variation in species presence across sites suggest species specific habitat preferences and potential influences of environmental conditions. Both sea turtle was mostly observed in locations associated with coral reef structures.&nbsp

Crystalline Properties of Jambu (Syzygium aqueum (Burm. f.) Alston) and Jackfruit (Artocarpus heterophyllus) Seed Starches: An XRD Spectroscopic Study

Starch, a complex carbohydrate found in plants, has become an alternative raw material to make plastics (bioplastics). Bioplastics have been intensively used to replace conventional plastics, which cannot be degraded and thus cause environmental problems. Therefore, starch has been the focus of many studies, where researchers study its properties, such as crystalline properties. These properties influence the properties of starch-based bioplastics: their mechanical strength, water resistance, and degradation rate are affected by the arrangement of starch molecules into crystalline structures. This study aims to characterize crystalline properties of starches of jambu fruit (Syzygium aqueum (Burm. f.) Alston) and jackfruit seeds (Artocarpus heterophyllus). For this purpose, X-ray diffraction (XRD) spectroscopy was used. The results show that the starches of jambu and jackfruit fruit seeds belong to different types: B-type starch for jambu and A-type starch for jackfruit. The index of crystallinity of starch of jackfruit seed, 54.0%, is higher than that of starch of jambu fruit seed, 38.1%. Starch of jackfruit seed has higher crystalline properties compared to starch of jambu seed

Rancang Bangun dan Uji Eksperimental Performa Burner Biomassa Berbahan Bakar Limbah Nyamplung (Calophyllum Inophyllum) dan Pelet Kayu

As a tropical country, Indonesia has abundant biomass potential because plants grow all year. Among the several types of biomass, nyamplung kernel cake (NKC) has a high potential for use as an energy source. The goal of this research was to develop a biomass burner and evaluate its performance using NKC and wood pellets (WP) as comparisons. The burner performance test is designed to investigate the effect of air mass flow rate on combustion flame, heat release rate, and thermal efficiency for both types of biomass. The thermal efficiency of the burner was calculated using the water boiling test (WBT). The results revealed that using NKC resulted in a longer combustion flame at air flow rates of 146 and 219 g/s. The higher the air flow rate, the longer the flame. The combustion of NKC and WP produced the longest flame, measuring 80 cm with an air mass flow rate of 290 g/s. The experiment also demonstrated that WP produced a higher temperature than NKC. The highest combustion temperature was produced by WP, reaching 818.1°C with an air mass flow rate of 290 g/s. From the two types of biomass evaluated, WP combustion produced more heat than NKC. The highest heat release rate of 35.46 kW was achieved with an air mass flow rate of 290 g/s. The burning of NKC resulted in the maximum thermal efficiency, 30.35% at an air mass flow rate of 219 g/

Rancang Bangun Sistem Pemantauan Suhu dan Kelembaban Udara Berbasis Arduino Uno pada Kumbung Jamur Merang

The environmental conditions of a mushroom house are a crucial factor influencing the growth of straw mushrooms, particularly in terms of temperature and humidity parameters. Therefore, it is essential to continuously monitor the environmental conditions within the mushroom house, specifically temperature and relative humidity (RH). This study aims to design a real-time temperature and humidity monitoring system based on Arduino Uno for use in a straw mushroom house. The research consists of several stages: literature review, design and assembly, programming, testing, and evaluation of testing results using the mean absolute percentage error (MAPE) method. The results show that the developed temperature and humidity monitoring system functions effectively to monitor environmental conditions within the mushroom house. The evaluation of the measurement results using the MAPE method indicates a minimum error rate for temperature and humidity measurements, with a percentage of 2.49% and 9.80%, respectively

Parameter Genetik Beberapa Karakter Kuantitatif Galur S3 Tanaman Jagung di Lahan Kering

This research aims to determine genetic diversity, broad heritability and genotypic correlation of several quantitative characters of the S3 line of corn plants in dry land. Treatment of 30 S3 lines, arranged in a randomized block design, two replications. The characters observed included the variables of flowering, growth, yield components, yield and maturity. The observation data were analyzed using analysis of variance at 5 percent significant level, then genetic variance, phenotypic variance, heritability and genetic diversity coefficient were calculated. Genotypic correlation analysis was also carried out in this study. The results show that ASI and yield have wide genetic diversity; while cobs dry weight per plant is classified as medium and other characteristics are classified as narrow. Heritability in a broad sense is relatively high, obtained at silking time, harvesting time and yield. Eight other characters have moderate heritability and the rest have narrow heritability.  A high negative genotypic correlation with leaf angle was obtained for leaf area; while the other four characters have a low negative correlation. Harvesting time had a low positive correlation with flowering variables; other characters are not correlated. Yield was highly positively correlated with plant height; while cob length, cob diameter and cob weight were moderately positively correlated. Plants selected for selfing in the next generation are taller plants, with more leaves and earlier silking time

Perbaikan Pertumbuhan dan Pengendalian Penyakit Busuk Pangkal Batang Bawang Putih dengan Aplikasi Pupuk Kohe Kambing yang Difermentasi dengan Bioaktivator Streptomyces sp

This research is an experimental study conducted on rice fields owned by farmers in Sembalun village and the Microbiology Laboratory of the Faculty of Agriculture at Unram. The research aims to determine the effect of fertilizer fermented with Streptomyces  sp. on the growth and yield of garlic plants as well as the control of basal rot disease in garlic plants. The research was arranged using a Completely Randomized Design (CRD) consisting of 6 treatments and repeated 6 times, resulting in 36 experimental units. The six treatments are: Without fertilizer application (P0), Goat manure fertilizer without the addition of bioactivator (P1), Goat manure fertilizer + Streptomyces  sp. isolate SH (P2), Goat manure fertilizer + Streptomyces  sp. isolate BSi (P3), Goat manure fertilizer + Streptomyces  sp. isolate BSc (P4). Goat manure fertilizer + Isolate SH + Liquid SH (P5). The research results show that the treatment with Streptomyces  sp isolate BSi (P3) produced the tallest plants (57.741 cm) and was significantly different from the treatment without fertilizer. (P0). Treatment P3 also produced the highest number of leaves (10.05) significantly different from the other treatments. The highest wet and dry weight of garlic bulbs was obtained in treatment P5, which were 2.556 g and 2.343 g, respectively. The lowest intensity of Fusarium wilt disease was obtained in treatment P4, which was 6.33%, and it was significantly different from P0 or without fertilizer treatment

Identifikasi Hubungan Antara Salinitas dan EC (Electrical Conductivity) Untuk Pengembangan Mitigasi Pengukuran Numerik-in Situ di Area Estuari: Mitigasi Kebencanaan Kualitas Air di Muara Kerandangan

The dynamic nature of estuarine waters necessitates new and accurate methodological approaches for determining salt content or salinity. This can be achieved through direct and real-time measurement of instantaneous and daily EC (Electrical Conductivity) levels in estuaries using EC sensors. On the other hand, similar real-time research has been limited, especially for studies of a continuous real-time nature. Therefore, this study aims to identify the relationship between EC and salinity in an estuary, using the area around the Batulayar estuary, West Lombok Regency, as a case study, employing a direct measurement model continuously for one full day. Measurements were conducted over 5 days during different lunar phases, using direct data acquisition and a numerical linearity approach via data analysis plug-ins. The identification results demonstrate a relationship between EC and salinity. At minimum values, salinity decreases as EC decreases. This reduction follows a quadratic pattern, with an obtained coefficient of determination (R²) of 0.8684 (y = 87397x² – 11173x + 2004.8). This characteristic is also supported by other measured parameters, such as TDS (Total Dissolved Solids), which exhibits a linear relationship with EC. The relationship characteristic between TDS and EC is considerably stronger, as indicated by a linear equation (R² > 0.90)