Analisis pengaruh kecepatan udara masuk PAWG terhadap volume kondensat, kinerja sistem, Psys dan COP

Water is one of the natural resources that is needed for the life of living things. Almost all activities require clean water, both for the metabolism of living things, agriculture and industry and is a major need. So that the availability of clean water sources needs to be maintained and looking for new sources. One source of clean water is atmospheric air which is very abundant. By using a water generator from stable atmospheric air, where the air enters the PAWG system in which there is a thermoelectric which can form a temperature difference in order to convert water into water vapor which then becomes condensate. The PAWG performance tested here is the inlet air velocity with variations of 0.27 m/s, 0.52 m/s and 0.97 m/s. The results show that the inlet air velocity affects the volume of condensate water and the performance of the Psys and COP systems. The higher the air velocity, the greater the volume of condensate water generated and the higher the Psys. But the results are different for COP, where the highest COP occurs at an inlet air speed of 0.52 m/s followed by a speed of 0.27 m/s and the smallest is 0.97 m/s

RANCANG BANGUN LEMARI PENGERING DAUN MARUNGGA (Moringa Oleifera)

Abstrak Pohon Marungga merupakan salah satu tumbuhan yang memiliki manfaat yang besar. Untuk daunnya sendiri dapat dijakdikan menjadi suplemen gizi dan juga sebagai bahan dasar kosmetik. Daun Marungga sendiri dapat dijadikan bubuk untuk selanjutnya diproses ke dalam berbagai kebutuhan. Sebelum dijadikan bubuk, sebelumnya daun tersebut harus dikeringkan. Pengeringan manual selama ini membutuhkan waktu yang panjang dan tidak higienis. Pada penelitian ini diperoleh hasil, proses pengeringan selama 19 jam diperolehhasil penurunan kelembaban tidak bisa dilakukan secara cepat. Hal ini disebabkan karena temperatur dalam ruangan tidak mampu memanaskan udara sekitar dengan cepat sehingga proses pengeringan cenderung lebih lambat. Dengan beban pengeringan 20 kg daun Marungga mentah, diperoleh sekitar 3 kg daun kering.Kata kunci: marungga; perpindahan panas; lemari Abstract Marungga tree is one of the plants that have great benefits. The leaves themselves can be transformed into nutritional supplements and also as a cosmetic base ingredient. Marungga leaves themselves can be used as a powder for further processing into various needs. Before being made into powder, the leaf must be dried beforehand. Manual drying so far requires a long time and is not hygienic. In this study the results were obtained, the drying process for19 hours obtained the result of humidity reduction could not be done quickly. This is because the temperature in the room is not able to heat the surrounding air quickly so the drying process tends to be slower. With a drying load of 20 kg of raw Marungga leaves, about 3 kg of dried leaves are obtained.Keywords: marungga; heat transfer; cabinet

S-Index and APRI Score to Predict Liver Fibrosis Chronic in Hepatitis B and C Patients

Background: A great interest has been dedicated to the development of non invasive predictive models in recent years to substitute liver biopsy for fibrosis assessment and follow-up. The aim of this study was to comparethe accuracy between S-index and aspartate aminotransferase to platelet ratio index (APRI) to FibroScan for predicting liver fibrosis in chronic hepatitis B and C patients.Method: A cross-sectional study was conducted in 40 patients with chronic hepatitis B and C between January 2010 - May 2011 at Division of Gastroentero-hepatology, Department of Internal Medicine, Adam Malik Hospital, Medan. Patients underwent laboratory examination and FibroScan, then used predictive values to assess the accuracy of S-index scores and APRI compared to FibroScan. The analysis was performed using SPSS 15.0.Results: S-index identified significant fibrosis in 87.5% patients with sensitivity (Se) 87.5% and specificity (Sp) 100%. About 67.5% of 40 patients could be identified correctly. S-index also could accurately predict the absence or presence of cirrhosis in 87.5% of the total 40 patients, with NPV 91.7% and PPV 81.25%, respectively. APRI for significant fibrosis has Se 85.7%, Sp 88%, PPV 88.8%, NPV 69.2%; while Se 53%, Sp 88%, PPV 72.7%, NPV 75.8% for liver cirrhosis. AUROC value for S-index was higher than APRI in predicting significant fibrosis and cirrhosis, i.e. 0.938 vs. 0.917 and 0.873 and 0.707, respectively.Conclusion: The S-index has a higher accuracy than APRI in predicting significant fibrosis and cirrhosis in patients with chronic hepatitis B virus and hepatitis C virus infection

Pengaruh Penambahan Bioetanol Buah Lontar Terhadap Nilai Kalor Premium Dan Emisi Gas Buang Sepeda Motor 4 Langkah 125 cc

ABSTRAK Penelitian ini dilakukan untuk menganalisa pengaruh penambahan bioetanol buah lontar terhadap nilai kalor premium dan emisi gas buang sepeda motor Suzuki Shogun-SP. Metode eksperimen dengan analisis deskriktif. Variabel bebas yang digunakan adalah bahan bakar premium tanpa tambahan bioetanol (E-0), bahan bakar premium dengan tambahan bioetanol 10% (E-10), 15% (E-15), dan 20% (E-20). Variabel terikat yang digunakan adalah nilai kalor dan kandungan emisi gas buang pada sepeda motor. Variabel kontrol yang digunakan adalah campuran premium-bioetanol yang diuji emisi gas buangnya sebanyak 100 ml pada putaran mesin 1500 rpm dan 2000 rpm kondisi idle. Hasil penelitian menunjukan adanya pengaruh penambahan bioetanol buah lontar terhadap nilai kalor premium dan emisi gas buang. Kadar bioetanol yang dihasilkan dari buah lontar tertinggi diperoleh dari 4 kali destilasi sebesar 92%. Nilai kalor bahan bakar terendah diperoleh  dari bahan bakar E-20 yaitu 7509,47 kal/gr. Kandungan Karbon Monoksida (CO) terendah diperoleh dari bahan bakar E-20 pada putaran mesin 1500 rpm sebesar 0,58% vol. Kandungan Hidro Karbon (HC) terendah diperoleh dari bahan bakar E-20 pada putaran mesin 1500 rpm sebesar 24 ppm.&nbsp

Diagnostic Findings and ERCP Treatment in Patients with Obstructive Jaundice During Two Years at H. Adam Malik Hospital, Medan

Background: The methods of ERCP have been used for diagnostic and therapeutic purposes to pass bile fluid and extract stones from the bile duct in patients with obstructive extrahepatic jaundice. Method: A retrospective study was performed on patients with obstructive extrahepatic jaundice patients who underwent ERCP during a two-years time period from January 1999 to December 2000. ERCP was performed with a premedication of 10 mg midazolam, followed by a chollangiography contrast containing 1 mg/dl of Garamicin and 25 mg of Pethidine if sphincterotomy was performed. Results: From 126 patients with obstructive extrahepatic jaundice treated with ERCP, the male to female ratio was 1.86:1. The majority of the (group) of patients were between 51-60 years of age (33.3 % ). The youngest patient (group) was 24 years and the oldest 97 years. The diagnostic study found the following cases: normal 3 cases (2.8%), bile duct stone 46 cases (43.4%), carcinoma of ampula vater 20 cases (18.9%), CBD tumor 7 cases (6.6%), carcinoma of head of pancreas 2 cases (1.9%), diverticle 4 cases (3.8%), duodenal tumor 1 case (0.9%), carcinoma of ampula vater and bile duct stone 1 case (0.9%), SOD 5 cases (4.7%), CBD stricture 1 case (0.9%) and failure 16 cases (15.1%). The patients receivied the following treatment: sphyncterotomy 36 cases (51.4%), stent application 11 cases ( 15.7%), sphincterotomy with stent 18 cases (25.7%) and basket method 5 cases (7.1%)

Combining thermal imaging with photogrammetry of an active volcano using UAV : an example from Stromboli, Italy

The authors would like to thank the Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Catania (INGV‐CT) for granting permission to conduct the UAV surveys over the Stromboli volcano. This work was supported by the School for Early Career Researchers at the University of Aberdeen, UK. Dougal Jerram is partly funded through a Norwegian Research Council Centres of Excellence project (project number 223272, CEED). The team would like to thank Angelo Cristaudo for logistical help during the fieldwork efforts on Stromboli.Peer reviewedPostprin

How land use/land cover changes can affect water, flooding and sedimentation in a tropical watershed: a case study using distributed modeling in the Upper Citarum watershed, Indonesia

[EN] Human activity has produced severe LULC changes within the Upper Citarum watershed and these changes are predicted to continue in the future. With an increase in population parallel to a 141% increment in urban areas, a reduction of rice fields and the replacement of forests with cultivations have been found in the past. Accordingly, LCM model was used to forecast the LULC in 2029. A distributed model called TETIS was implemented in the Upper Citarum watershed to assess the impact of the different historical and future LULC scenarios on its water and sediment cycles. This model was calibrated and validated with different LULCs. For the implementation of the sediment sub-model, it was crucial to use the bathymetric information of the reservoir located at the catchment's outlet. Deforestation and urbanization have been shown to be the most influential factors affecting the alteration of the hydrological and sedimentological processes in the Upper Citarum watershed. The change of LULC decreases evapotranspiration and as a direct consequence, the water yield increased by 15% and 40% during the periods 1994-2014 and 2014-2029, respectively. These increments are caused by the rise of three components in the runoff: overland flow, interflow and base flow. Apart from that, these changes in LULC increased the area of non-tolerable erosion from 412 km(2) in 1994 to 499 km(2) in 2029. The mean sediment yield increased from 3.1 Mton -yr(-1) in the 1994 LULC scenario to 6.7 Mton-yr(-1) in the 2029 LULC scenario. An increment of this magnitude will be catastrophic for the operation of the Saguling Dam.This study was partially funded by the Spanish Ministry of Economy and Competitiveness through the research projects TETISMED (CGL2014-58,127-C3-3-R) and TETISCHANGE (RTI2018-093717-B-I00). The authors are also thankful to the Directorate General of Higher Education of Indonesia (DIKTI) for the Ph.D. funding of the first author.Siswanto, SY.; Francés, F. (2019). How land use/land cover changes can affect water, flooding and sedimentation in a tropical watershed: a case study using distributed modeling in the Upper Citarum watershed, Indonesia. Environmental Earth Sciences. 78(17):1-15. https://doi.org/10.1007/s12665-019-8561-0S115781

Mapping inequalities in exclusive breastfeeding in low- and middle-income countries, 2000–2018

Abstract: Exclusive breastfeeding (EBF)—giving infants only breast-milk for the first 6 months of life—is a component of optimal breastfeeding practices effective in preventing child morbidity and mortality. EBF practices are known to vary by population and comparable subnational estimates of prevalence and progress across low- and middle-income countries (LMICs) are required for planning policy and interventions. Here we present a geospatial analysis of EBF prevalence estimates from 2000 to 2018 across 94 LMICs mapped to policy-relevant administrative units (for example, districts), quantify subnational inequalities and their changes over time, and estimate probabilities of meeting the World Health Organization’s Global Nutrition Target (WHO GNT) of ≥70% EBF prevalence by 2030. While six LMICs are projected to meet the WHO GNT of ≥70% EBF prevalence at a national scale, only three are predicted to meet the target in all their district-level units by 2030