Jurnal FKIP Universitas Mataram (Fakultas Keguruan Dan Ilmu Pendidikan)
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Antioxidant Activity Test of Salak Bali Peel Extract (Salacca zalacca var. amboinensis) Against Brain Cells of Male Mice (Mus musculus L.) Induced by Alloxan
Full text linkThis study aims to test the antioxidant activity of salak Bali peel extract (Salacca zalacca var. amboinensis) against brain cells of male mice (Mus musculus L.) exposed to alloxan. Free radicals can trigger damage to brain cells through oxidative mechanisms, which contribute to the development of various neurodegenerative diseases that can damage cells in the body. Salak Bali peel extract contains bioactive compounds such as flavonoids, tannins, and polyphenols that are antioxidant-active. This study was conducted using a completely randomized design (CRD) in mice induced by alloxan at a dose of 150 mg/kg BW (group 1), followed by oral administration of salak Bali peel extract at a dose of 4.2 mg/kg BW (group 2) and 8.4 mg/kg BW (group 3) for 35 days. The control group used in this study was alloxan, which was used to compare the treatment results with conditions without intervention so that the effects of the treatment could be identified more clearly. The results of the antioxidant analysis test using the DPPH method showed an IC50 value of the salak Bali peel extract of 45.5 µg/mL, indicating a high antioxidant capacity. Histopathological analysis revealed that administration of salak Bali peel extract could reduce necrosis in the brain tissue of mice induced by alloxan, suggesting a neuroprotective effect. Therefore, salak Bali peel extract has the potential to be a source of natural antioxidants that can be used to prevent brain damage due to oxidative stress and as a therapy for treating neurodegenerative diseases
Analysis of Residual Free Chlorine Content in Rinjani Waterpark Swimming Pool Water, East Lombok District
Full text linkWater is the most essential component in daily life. One of its uses is as water in swimming pools. A swimming pool is a public place and facility in the form of a pool building used for swimming. The water used in swimming pools must have a quality that complies with the quality standards determined for the water. One of the parameters required in PERMENKES Nomor 2 Tahun 2023 is the remaining free chlorine. This research aims to analyze the residual free chlorine content in Rinjani Waterpark swimming pool water, where it is known from the results of preliminary studies that Rinjani Waterpark uses chlorine as a disinfectant to kill bacteria in the water and purify the pool water. There were several complaints from swimming pool visitors, such as eye irritation and itchy skin after swimming in that swimming pool, so further analysis was needed. The type of research used in this research is descriptive qualitative. The samples used in this research were 4 samples. The sampling technique uses total sampling. Testing was carried out at the STTL Mataram laboratory to see the free chlorine content in water samples using Mohr's Argentometry method. After conducting the research, the results were obtained that the samples that did not meet the requirements were samples with codes P1 M=2.3 mg/L, P3 M=1.77 mg/L, P4 M=2.3 mg/L, and P3 A = 0 mg/L. Visitors who want to visit the Rinjani Waterpark swimming pool are expected to use personal protective equipment (PPE) such as swimming goggles to avoid the impact of chlorine levels that are too high in the water. Swimming pool managers should pay attention to the chlorine dosage in the water so that it does not cause side effects to visitors
The Influence of the PBL Model on Temperature and Expansion Topics on Student Learning Outcomes
Full text linkThe Problem-Based Learning (PBL) model is a student-centered learning strategy that requires students to be skilled and sensitive in solving problems in the surrounding environment. This research aims to determine the effect of the PBL model on temperature and expansion topics on student learning outcomes. This research is experimental research, with the research design being One Group Pre-test and Post-test Design. The population of this research was class VII students of SMP Negeri 11 Gorontalo. The sample consists of 3 classes: experimental class, replication 1, and replication class 2. The data collection instruments used are validation sheets, observation sheets, and pre-test and post-test question sheets to see student learning outcomes; then, the data is analyzed using descriptive statistics and statistics. Inferential, which includes normality testing, hypothesis testing, and n-gain analysis. The results of the research show that the results of the hypothesis test are that for the experimental class, the t-count is 7.513 greater than t-table 1.697; for replication class 1, t-count 4.679 is more significant than t-table 1.720, and for replication class 2, t-count 2.080 is more important than t-table 1.729. It can be concluded that the hypothesis testing in each class is t-count greater than t-table; this can be interpreted as the influence of the PBL model on temperature and expansion topics on student learning outcomes
Analysis of Coral Condition at Kecinan Beach, North Lombok
Full text linkThe high level of construction and community activities at Kecinan Beach can affect the condition of the coral reef ecosystem. The health condition of the coral reef ecosystem can be assessed by the percentage of live coral cover within the ecosystem. North Lombok is one of the regencies on the island of Lombok that has experienced coral reef ecosystem damage, with this regency having the lowest percentage of live coral cover compared to other regencies. This study aims to determine the diversity of coral reef lifeform types and assess the health status of coral reefs at Kecinan Beach, North Lombok Regency. Data on coral reef lifeform types were observed using Coral Finder 2.0 Indo Pacific. Data collection was conducted using the UPT (Underwater Photo Transect) method at two different depths: 1-5 meters and 6-10 meters. The research results indicate that the coral reef ecosystem at Kecinan Beach is in poor condition. The percentage of live coral cover at depths of 1-5 meters is 3,58%, and at depths of 6-10 meters is 0,90%. There is ten types of coral reef lifeforms were found distributed across both depths: Acropora branching, Acropora tabulate, coral branching, encrusting, foliose, heliopora, massive, millepora, mushroom, and submissive. Diversity, evenness, and dominance indexs shows even distribution of lifeforms with no dominant species in the coral reef ecosystem at Kecinan Beach, North Lombok
The Correlation Between Years of Employment and Daily Noise Exposure Duration on Noise Induced Hearing Loss (NIHL) among Employees of the River Lake and Ferry Transportation (ASDP) at the ENT Clinic of the NTB Provincial Hospital
Full text linkSmoking NIHL (Noise-induced hearing loss) is a condition of hearing loss, namely sensorineural deafness due to long-term exposure to noise. This disease generally causes bilateral, irreversible, and progressive deafness. The purpose of this study was to see if there was a significant relationship between length of work and duration of daily noise exposure with the incidence of NIHL in ASDP employees. The research method was Cross-sectional and the data obtained were primary data and secondary data taken using the non-probability consecutive sampling technique. The materials or instruments used in the data collection process were questionnaires for primary data and medical records for secondary data. The data analysis process was carried out using an analytical test using Fisher-exact with relevant results p-value <0.05. After the analytical test was carried out, there was no significant relationship between length of work and the incidence of NIHL in ASDP employees at the ENT Polyclinic of the NTB Provincial Hospital (p = 0.34), and there was also no significant relationship between the duration of daily noise exposure and the incidence of NIHL in ASDP employees at the ENT Polyclinic of the NTB Provincial Hospital (p = 0.40). The conclusion of this study is that there is no significant relationship between length of work and duration of daily noise exposure with the incidence of NIHL in ASDP employees at the ENT Polyclinic of the NTB Provincial Hospital
Behavioral Patterns and Honey Yield Between Native and Non-native Stingless Bees in Bali's Ecosystem
Full text linkThe coronavirus disease 2019 (COVID-19) pandemic has led to significant growth in honey bee cultivation in Bali, leading to the introduction of nonnative bee species alongside the indigenous Tetragonula laeviceps. However, the 75% failure rate of nonnative species cultivation between 2020 and 2023 necessitated a deeper understanding of species adaptability in the Bali ecosystem. This study specifically examined the behavioral adaptation and honey production of Heterotrigona itama compared with those of Tetragonula laeviceps in a shared cultivation environment. A seven-month comparative experimental study involving 30 bee colonies (15 H. itama introduced from Lampung and 15 local T. laeviceps) was conducted. Time series sampling was employed at three daily intervals (09:00, 13:00, and 16:00) for behavioral observations, while honey production was measured via nondestructive vacuum extraction. H. itama demonstrated superior honey production (516.3 ml average) to that of T. laeviceps (213.3 ml average). The species exhibited distinct foraging preferences, with T. laeviceps favoring Jatropha integerrima and H. itama preferring Antigonon leptopus and Xanthostemon chrynsanthus. Both species have developed different adaptive strategies for nectar–water content management, with H. itama utilizing sun exposure and T. laeviceps employing smaller storage pots. This study revealed successful coexistence between native and nonnative species through differentiated foraging behaviors and resource utilization strategies, with H. itama showing greater productive capacity attributed to morphological and behavioral differences
The Relationship Between Nutritional Status, Maternal Knowledge, and Family Socio-Economic Status with The Development of Children Aged 3-5 Years at UPTD Puskesmas Brang Rea
Full text linkEarly childhood development, particularly in the age range of 3-5 years, is a critical period marked by rapid physical growth and psychosocial development. Various factors can influence a child’s development, including nutritional status, maternal knowledge, and family socio-economic conditions. To determine the relationship between nutritional status, maternal knowledge, and family socio-economic status with the development of children aged 3-5 years at UPTD Puskesmas Brang Rea. This research employed a quantitative, observational analytic approach with a cross-sectional design. A purposive sampling technique was used. The study was conducted at UPTD Puskesmas Brang Rea in September 2024, involving 100 respondents. Data were analyzed using the Chi-square test with a significance level of p < 0.05. From a total of 100 respondents, the univariate analysis revealed that 38% of children had good nutritional status, 58% of mothers had high knowledge levels, 53% of children belonged to low socio-economic families, and a majority of children (36%) showed questionable developmental progress. Bivariate analysis indicated a significant relationship between nutritional status and child development (p-value 0.002), maternal knowledge and child development (p-value 0.047), and family socio-economic status and child development (p-value 0.020). There is a significant relationship between nutritional status, maternal knowledge, and family socio-economic status with the development of children aged 3-5 years at UPTD Puskesmas Brang Rea
Pelatihan Berbahasa Indonesia dari Pengaruh Bahasa Ibu pada Siswa Kelas 6 SDN 03 Penarik
Full text linkBahasa Ibu juga disebut sebagai bahasa asli atau bahasa pertama. Masalah pada pelatihan ini yaitu siswa sudah terbiasa menggunakan bahasa ibu di ruang lingkup sekolah, namun dalam konteks pembelajaran seharusnya menggunakan bahasa Indonesia. Manfaat penggunaan bahasa Ibu dalam proses pembelajaran antara lain meningkatkan pemahaman konsep, meningkatkan motivasi belajar, memperlancar komunikasi siswa-guru, dan memperkuat identitas budaya. Pengabdian ini dilaksanakan di SDN 03 Penarik. Tujuan dari pengabdian ini adalah untuk mengajarkan dan mendorong siswa berbicara bahasa Indonesia yang akurat dan benar. Selain itu, tujuan pelajaran ini adalah untuk menyoroti kesulitan yang terkait dengan penggunaan bahasa ibu selama pengajaran. Metode yang digunakan dalam pelatihan ini yaitu observasi, literasi, tanya jawab, dan pelatihan. Hasil dari pelatihan ini yaitu peningkatan siswa menggunakan bahasa Indonesia di dalam kelas. Kesimpulan pelatihan ini untuk mengurangi dampak negatif, diperlukan upaya terpadu dari sekolah, keluarga, dan lingkungan sosial untuk meningkatkan kualitas pembelajaran bahasa Indonesia. Pelatihan ini adalah bentuk pengabdian Mahasiswa Universitas Muhammadiyah Bengkulu dengan harapan siswa SDN 03 Penarik termotivasi sejak dini
Menumbuhkan Rasa Cinta dan Bangga Berbahasa Indonesia Pada Siswa-Siswi SMPN 19 Bengkulu Selatan
Full text linkProgram Kuliah Kerja Nyata (KKN) yang dilaksanakan di SMPN 19 Bengkulu Selatan yang bertempat di Nanjungan, Kecamatan. Kedurang Ilir, Kabupaten Bengkulu Selatan, berfokus pada sosialisasi pelatihan dasar bahasa pemrograman. Kegiatan ini dilaksanakan pada tanggal 6 Agustus 2024 dengan total 1 (satu) kali pertemuan. Metode penelitian pada kegiatan ini menggunakan metode kualitatif dengan melakukan observasi awal di SMPN 19 Bengkulu Selatan. Pendekatan kegiatan pembelajaran ini adalah untuk memberikan gambaran umum tentang pentingnya bahasa Indonesia sebagai bahasa pemersatu bangsa dan cara pemanfaatannya. Hasil kegiatan KKN dengan Melalui penggunaan yang baik, pendidikan, dan dukungan terhadap kebudayaan, kita dapat memastikan bahwa Bahasa Indonesia tetap relevan dan berfungsi sebagai jembatan penghubung antara berbagai lapisan masyarakat di Indonesia. Melalui program ini, siswa/siswi dapat lebih cinta dan bangga terhadap bahasa kesatuan bahasa Indonesia, dengan menerapkan bahasa Indonesia sebagai bahasa sehari-hari baik di lingkungan sekolah maupun lingkungan masyarakat
The Effect of Salinity on Osmoregulation Physiology of Survival and Respiration Rate of Tilapia Fish (Oreochromis niloticus)
Full text linkOsmoregulation is a process used by fish to maintain the balance of water and ion levels in the body, so that salinity becomes a limiting factor for the life of Tilapia fish. This study aims to determine the effect of salinity on osmoregulation, physiological survival and respiration rate of Tilapia fish (Oreochromis niloticus). This research design used an experimental method with a Completely Randomized Design (CRD) approach. This research design involved four different treatment levels and was carried out with five repetitions for each treatment. Each treatment was designed to test the effect of a particular variable on the observed parameters, with repetitions aimed at ensuring consistency of results. P1: Control (No Filter). P2: Salinity 5 ppt. P3: Salinity 10 ppt. P4: Salinity 15 ppt. The activity of tilapia in each salinity medium was observed to determine changes in behavior after the fish were inserted into the salinity medium. Physiological responses were observed, and the respiration of tilapia through operculum movements in each salinity medium was calculated after 5 minutes of treatment for 1 minute. Survival was calculated after 5 minutes of treatment until the tilapia died. Data were analyzed using one-way ANOVA, with a significance level of 5%. If there was a significant difference, it was continued with the LSD test (Least Significant Difference). Based on the ANOVA test, the Sig. value obtained was .000 (<0.05), indicating that there is an effect of salinity on the physiological osmoregulation of tilapia survival (Oreochromis niloticus). Based on the results of the Multiple 12 Comparisons LSD test, it can be seen that all differences between treatment groups are significant with a 95% confidence level (p < 0.05). Based on data analysis and discussion, the study concluded that salinity has a significant effect on the respiratory rate of tilapia (Oreochromis niloticus), where increasing salt levels cause an increase in the frequency of operculum movements in response to osmotic stress. The main factors affecting the survival of tilapia to salinity differences are the ability to osmoregulate, which is increasingly inhibited as salt levels increase, as well as the duration of exposure to more hypertonic environmental conditions