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All Journal Journal of the Medical Sciences (Berkala Ilmu Kedokteran) INAQUE: Journal of Industrial & Quality Engineering
Alatas, Haidar
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Computer Science & IT Economics, Econometrics & Finance Engineering Immunology & microbiology Industrial & Manufacturing Engineering Mechanical Engineering Neuroscience

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Soursop fruit (Annona muricata Linn.) consumption does not increase serum potassium levels and not significant in cardiovascular risk improvements of prehypertension subjects Alatas, Haidar; Sja'bani, Mochammad; Irijanto, Fredie; Mustofa, .; Mukti, Ali Ghufron; Bawazier, Lucky Aziza; Zulaela, Zulaela
Journal of the Medical Sciences (Berkala Ilmu Kedokteran) Vol 50, No 4 (2018)
Publisher : Journal of the Medical Sciences (Berkala Ilmu Kedokteran)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (448.714 KB) | DOI: 10.19106/JMedScie/005004201804

Abstract

Patients with chronic kidney disease (CKD) tend to have hyperkalemia. They worry about the consumption of fruit for fear of increased serum potassium levels and therefore require a restricted potassium diet. Soursop fruit (Annona muricata Linn.) is believed to be beneficial for CKD and cardiovascular risk. This study was conducted to investigate the effect of soursop fruit supplement consumption on serum potassium levels and cardiovascular risk in prehypertension subjects from Mlati, Sleman District, Yogyakarta Special Region, Indonesia. A total 143 samples that met to the inclusion and exclusion criteria were subsequently randomized into two groups. Group I was given 2 x 100 g/day of soursop and Group II was without soursop. A laboratory examination from both groups was conducted including potassium, total cholesterol, low density lipoprotein (LDL), high density lipoprotein(HDL), and triglyceride levels at weeks 0; 7; and 13. Regular soursop consumption was evaluated every 2 weeks for 3 months. Data analysis was performed using an independent t test, a nonparametric Mann–Whitney test, and a chi-square test. No significantly different in serum potassium levels between the soursop and non-soursop groups at week 7 and 13 (p=0.073 and p=0.108) was observed. Furthermore, no significantly different in total cholesterol (p=0.254 and p=0.932), LDL (p=0.221 and p=0.710), HDL (p=0.400 and p=0.960), triglycerides (p=0.423 and p=0.580) of both groups was also obsereved. However, in subjects with hypercholesterolemia and hypertriglyceridemia, the mean cholesterol and triglyceride levels decreased compared to no soursop consumption at week 7 and 13. In conclusion, consumption of a soursop fruit supplement of 2 x 100 g/day for 13 weeks does not affect the serum potassium levels of prehypertension subjects. Moreover, the consumption of a soursop fruit supplement is not significantly different compared to those without soursoup in improving cardiovascular risk.
ANALISIS EFEKTIVITAS MESIN INJECTION MOLDING DI BAGIAN PRODUKSI PT. DIAN MEGAH INDO PERKASA MENGGUNAKAN METODE OVERALL EQUIPMENT EFFECTIVENESS DAN FAULT TREE ANALYSIS Sianturi, Gabriel; Alatas, Haidar
Inaque : Journal of Industrial and Quality Engineering Vol 7 No 2 (2019)
Publisher : Teknik Industri Unikom

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1208.657 KB) | DOI: 10.34010/iqe.v7i2.1859

Abstract

Salah satu faktor terpenting dalam proses produksi adalah kinerja mesin. Mesin merupakan alat utama dalam pembuatan produk. PT Dian Megah Indo Perkasa merupakan perusahaan yang bergerak dibidang industry plastik dan terletak di Jl. Abdul Halim No. 30 Cimahi Badung, Jawa Barat. PT Dian Megah Indo Perkasa memilik 28 mesin injection molding, apabila salah satu mesin mengalami kerusakan ataupun penurunan performasi maka target produksi tidak akan tercapai. Metode overall equipment effectiveness merupakan metode yang digunakan untuk menghitung efektivitas suatu mesin, dimana avalaibility, performance dan quality menjadi komponen terpenting dalam metode ini. Selain itu untuk dapat melihat nilai kerugian yang dialami oleh perusahaan maka diperlukanlah perhitungan metode Six Big Losses. Selanjutnya nilai efektivitas dan nilai Six Big Losses tersebut akan dianalisis menggunakan metode Fault Tree Analysis. Mesin injection molding merupakan mesin yang memproduksi produk dari plastik, namun mesin ini belum sepenuhnya bekerja secara efektif. Hal ini dapat diketahui dari rendahnya nilai overall equipment effectiveness (OEE) yang telah dihitung yaitu sebesar 70,83% untuk periode Januari 2018, 74,25% untuk periode Februari 2018 dan 78,66% untuk periode Maret 2018. Nilai ini masih jauh dari target nilai ideal OEE yang telah ditetapkan oleh Seiichi Nakajima yaitu diatas 85%. Akar penyebab dari rendahnya nilai OEE tersebut adalah karena tingginya nilai six big losses yang telah dihitung. Faktor yang menyebabkan rendahnya nilai efektivitas dan tingginya nilai Six Big Losses diantara lain yaitu breakdown pada mesin, penurunan kecepatan produksi, gangguan pada molding dan masih terdapat produk-produk yang tidak sesuai standar yang telah ditetapkan. Berdasarkan hasil pengolahan dan analisis yang telah dilakukan maka terdapat beberapa perbaikan yang dibutuhkan PT Dian Megah Indo Perkasa. Usulan perbaikan yang direkomendasikan meliputi eliminasi six big losses, pemberian seminar pelatihan pada seluruh operator mesin injection molding dan pembuatan standar operasional prosedur (SOP) guna meningkatkan nilai overall equipment effectiveness (OEE)
Co-Authors Ali Ghufron Mukti Bawazier, Lucky Aziza Fredie Irijanto Mustofa Mustofa Sianturi, Gabriel Sja'bani, Mochammad Zulaela Zulaela, Zulaela