http://localhost:8080/xmlui/handle/123456789/6996 Thu, 16 Apr 2026 20:16:28 GMT 2026-04-16T20:16:28Z http://localhost:8080/xmlui/handle/123456789/7214 Title: Optimasi Kadar Awal, Waktu Kontak dan Berat Biomassa pada Proses Biosorpsi Cu2+ Menggunakan Cangkang Lorjuk Authors: Hajar, Syarifa; Nasution Sugijanto, Noor Erma; Kartosentono, Sugijanto Abstract: Abstract Background: Kerang pisau (Solen vagina) shell has the potential to cause environmental pollution, but can be utilized as a biosorbent in the absorption of heavy metals, especially Cu because the shells generally contain CaCO3 and chitin. Several variables determine to influence the biosorption process: initial metal concentration, biosorbent mass, and contact time. Objective: To determine the effect of initial Cu (II) concentration, biosorbent mass, and contact time on the biosorption process through data on the percentage of efficiency and adsorption capacity. Methods: The biosorption process is carried out in a variety of parameters by entering the biosorbent and Cu (II) solution in the column, according to each variation that has been determined and filtered. Quantitative determination of Cu (II) levels on the biosorption results using an Atomic Absorption Spectrophotometer (AAS). Results: The biosorbent contained Cu (II) 0.0220 mg/g that used as a correction factor. The optimal initial concentration of Cu (II) is 100 mg/L with an efficiency percentage of (98.47 + 0.19)% and adsorption capacity (630.37 + 1.2)ug/g, while the optimal result for contact time is 120 minutes with an efficiency percentage of (90.78 + 0.25)%. The optimal biosorbent mass is 2 g based on percentage efficiency of (97.69 + 0.1)%. Conclusion: Kerang pisau (Solen vagina) can be used as an effective biosorbent for copper (Cu) adsorption from aqueous media. The best optimization results for the factors used in Cu (II) biosorption process are an initial concentration of 100 mg/L, 2 g biosorbent mass, and 120 minutes contact time. Keywords: kerang pisau (Solen vagina), biosorption, copper (Cu2+), AAS Tue, 27 Apr 2021 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/7214 2021-04-27T00:00:00Z http://localhost:8080/xmlui/handle/123456789/7211 Title: Evaluasi Obat Kadaluwarsa, Obat Rusak dan Stok Mati di Puskesmas Wilayah Magelang Authors: Nurma Khairani, Revina; Latifah, Elmiawati; Ayu Septiyaningrum, Ni Made Abstract: Abstract Background: In the era of National Health Insurance, drug management problems in health centers still often occur, so it is necessary to carry out a continuous evaluation to ensure optimal availability and service of drugs. Objective: This study aims to describe and analyze the occurrence of expired drugs, damaged drugs, and dead stocks, to provide policy recommendations for improving drug management. Methods: Non-experimental research with analytical descriptive design, which is analyzed descriptively and qualitatively. The sample used to evaluate expired and damaged drugs is all drugs in 2019, while the sample for evaluation of dead stock uses a combination of indicator drugs and e-catalog drugs that are the most consumed in 2019. Factors that affect barriers to drug management are observed by interview. Result: The expired drugs at Puskesmas X and Y were 24% and 18%, dead stock was 40% and 20%, no damaged drugs were found in the two health centers. The problem of drug management that dominantly occurs in puskesmas is due to a factor in changing prescribing patterns, expiration dates that are too short and the unsatisfactory demand for drugs received from the UPT Pharmacy Installation. Conclusion: The percentage of expired drugs and dead stock drugs is not following the research indicators (0%), so with these findings, it is necessary to validate drug planning according to drug needs as well as improve management of expired drug management and strengthening the drug acceptance system at the health center. Keywords: drug management, deadstock, expired drugs, damaged drugs, health center Tue, 27 Apr 2021 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/7211 2021-04-27T00:00:00Z http://localhost:8080/xmlui/handle/123456789/7208 Title: Faktor-Faktor yang Berhubungan dengan Kualitas Hidup Pasien Penyakit Ginjal Kronis yang Menjalani Hemodialisis Authors: Simorangkir, Renni; Murti Andayani, Tri; Wiedyaningsih, Chairun Abstract: Abstract Background: Hemodialysis (HD) is one of renal replacement therapies in patients with CKD to improve morbidity and mortality, however HD can cause various complications affecting quality of life. Objective: To determine sociodemographic factors and clinical factors associated with quality of life among haemodialysis patients. Methods: This study used a cross-sectional design involving 130 patients undergoing hemodialysis from MarchApril 2020 with inclusion criteria: patient ≥ 18 years old, duration of hemodialysis ≥ 3 months and patients in critically ill were excluded. Data was collected by interviewing and from patients’ medical record. Quality of life was assessed using Kidney Disease Quality of Life-Short Form 36 (KDQOL-SF36) questionnaire. Data of physical component summary, mental component summary and score of KDQOL were analyzed using multiple linier regression-dummy. Results: The mean of age was 49.6 ± 13.1 years, number of chronic medicines 5.5 ± 1.7 items. The score of KDQOL was 71.4 ± 10.1; physical composite summary 61.4 ± 20.4; mental composite summary 81.2 ± 15.7. There were correlation between age (p = 0,000), level of income (p = 0,024) with quality of life in physical composite summary and age (p = 0,010) in KDQOL score; total chronic prescriptions (p = 0,010) in physical composite summary and KDQOL score (p = 0.016); comorbidity (p = 0.007) in physical composite summary. Conclusion: There was correlation between age, level of income, total chronic prescriptions and comorbidity of DM with patient’s health-related quality of life (p < 0,05). Keywords: health-related quality of life, haemodialysis, chronic kidney disease Tue, 27 Apr 2021 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/7208 2021-04-27T00:00:00Z http://localhost:8080/xmlui/handle/123456789/7205 Title: Kadar Vitamin C Buah Tomat (Lycopersicum esculentum Mill) Tiap Fase Kematangan Berdasar Hari Setelah Tanam Authors: Dwi Asta Sari, Lega; Surya Ningrum, Riska; Hadi Ramadani, Aisyah; Kurniawati, Evi Abstract: Abstract Background: Tomato (Lycopersicon esculentum Mill.) contains vitamins and minerals which are beneficial for boosting the human immune system. The content of vitamin C in fruit is dynamically affected by a physiological factor during its growing phase and the varieties. Objective: This research evaluated the profile of vitamin C in different maturity phases based on the day after planting as a reference for the best harvest time to obtain optimal vitamin C content. Method: Vitamin C content was examined qualitatively by KMnO4, FeCl3, and AgNO3 reagents, while the quantitative value was counted by iodometric titration method with 3 replications. One hundred gram of fresh fruits used as a sample in each maturity phase which harvested on the 45th with 3 days interval until 72nd days after planting. Results: Vitamin C was found in each sample and the quantitative test showed that its levels start to increase at 45 until 63, then decreased to 72 days after planting. Tomato sample of 63rd days after planting had the highest vitamin C level (21.29 mg/100 g). The fluctuation of vitamin C in tomatoes is influenced by the level of fruit maturity, climate, and environmental conditions during the fruit growing period. Conclusion: Vitamin C of tomatoes reach the optimum level responding to the ripening process and climatic condition during growing season. To get the best intake of vitamin C from tomatoes fresh fruit consumption, our research recommends harvesting the fruits at the 63rd days after planting which are the peak level of vitamin C. Keywords: vitamin, ascorbic acid, iodimetric, ripening, days after planting Tue, 27 Apr 2021 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/7205 2021-04-27T00:00:00Z