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All Journal Paediatrica Indonesiana Machine : Jurnal Teknik Mesin
Lily Rahmawati
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Automotive Engineering Health Professions Mechanical Engineering Medicine & Pharmacology

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Short-term impact of acute uncomplicated malaria on the cognitive performance of school children living in an endemic area Masyitah Masyitah; Lily Rahmawati; Sri Sofyani; Munar Lubis; Iskandar Z. Lubis
Paediatrica Indonesiana Vol 49 No 2 (2009): March 2009
Publisher : Indonesian Pediatric Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14238/pi49.2.2009.82-6

Abstract

Background In Indonesia, malaria remains a public healthproblem. In North Sumatra between 2000 and 2004, an estimated50,670 clinical cases occurred every year, leading to the deathsof 9-10 people per year.Objectives To determine the short-term impact of acute uncompli-cated malaria on the cognitive performance of school children.Methods A prospective study was conducted on students at fourelementary schools in Madina, North Sumatra, Indonesia, fromAugust 15 to September 3, 2006. Subjects were classified intomalaria and non-malaria groups based on microscopically confirmedblood smears; they were selected by means of random sampling.Cognitive performance was measured with two examination paperson mathematics and Indonesian language before and two weeksafter artesunate and amodiaquin treatment for three days in themalaria group. Independent or paired t-tests were used to analyzedifferences in mean scores of cognitive performance.Results From 925 children examined, 384 suffered from malaria.One-hundred and thirty three children were recruited from themalaria group and 132 children were recruited from the non-malaria group. There was no difference in the distribution ofgeneral characteristics of the subjects. There was a significantdifference in cognitive performance between the malaria andnon-malaria groups (P<0.0001) before and after treatments. Inthe malaria group, there was a significant difference in cognitiveperformance before (mean 38.9; SD 15.19) and after treatment(mean 72.9; SD 10.41) with P<O.OOOl.Conclusion Acute uncomplicated malaria significantly affectsthe cognitive performance of school children living in a malaria-endemic area.
STUDI PERFORMASI SUDU TURBIN ANGIN SAVONIUS TIPE VERTICAL AXIS BERBAHAN KOMPOSIT Ozkar F. Homzah; Ella Sundari; Rachmat Dwi Sampurno; Ogi Meita Utami; Lily Rahmawati
Machine : Jurnal Teknik Mesin Vol 9 No 1 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i1.3317

Abstract

The increasing human population, the use of fossil energy such as oil also increases. While fossil energy is one of the largest contributors to carbon emissions that can cause climate change that can be done to control climate change is to switch to the use of renewable energy. The investigation takes the shape of a vertical axis Savonius turbine blade design. The blades are made of a composite material called carbon fiber, and the number of blades varies between 4, 6, and 8 pieces. The study's findings were tested utilizing a blower-generated wind source with wind speeds of 4m/s, 4.5m/s, and 5m/s. A wind tunnel consisting of acrylic material and pipes as a frame construction was used in the test. The test findings show that turbine blades with a total of four blades produce the maximum generator power of 0.274 watts at a wind speed of 5 m/s. Meanwhile, the turbine blade with 8 blades has the lowest output power at a wind speed of 4 m/s and a power value of 0.0028 W. Then, with 8 blades, it has a relatively low output energy compared to 4 and 6 blades. Therefore, the highest efficiency performance of wind turbine use is achieved by a turbine with a number of 4 blades with a maximum efficiency is 9,16% and the minimum efficiency it seen in a wind turbine with a number of blades 8 within 0,07%.
Co-Authors Ella Sundari Homzah, Ozkar F Iskandar Z. Lubis Munar Lubis Ogi Meita Utami Rachmat Dwi Sampurno Siti Helmyati Sri Sofyani