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All Journal Konversi International Journal of Engineering, Technology and Natural Sciences (IJETS) Journal of Industrial Engineering and Operation Management (JIEOM) Dinamika Kesehatan: Jurnal Kebidanan dan Keperawatan Jurnal Industri dan Teknologi Samawa (JITSA) Serambi Engineering
Rianti Indah Lestari
Politeknik ATI Makassar
Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Medicine & Pharmacology Nursing Public Health

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ANALYSIS OF ENCAPSULATED YEAST IN COMPUTATIONAL FLUID DYNAMICS APPROACH Riani Ayu Lestari; Rianti Indah Lestari
Konversi Vol 8, No 2 (2019): Oktober 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v8i2.7203

Abstract

Abstract - Computational fluid dynamics of encapsulated yeast has been developed to determine characterization of encapsulated yeast applied for ethanol production from lignocellulose waste. Encapsulated yeast as biologically activate materials enclosed in a semipermeable membrane to protect cell from inhibitor attack. Encapsulated yeast system relates to mass transfer of substrate (glucose) into capsule and out of capsule and fermentation reaction. Modelling of mass transfer was developed to understand capsule performance consisting of 3 parts, cell aggregate, liquid space and thin membrane. Finite element method has been applied to solve partial differential equation of glucose concentration profile against x, y position and t -time in Comsol multhiphysics 3.5a. Capsule geometry was showed in half part capsule, 2D and axis symmetries. Trend line of glucose distribution was effected by thickness membrane that 0.1 mm controlling in mass transfer and cell aggregate of 50%-v of membrane.Keywords: computational fluid dynamics, encapsulated yeast system, glucose mass transfer
POTENSI SUPLAI LIMBAH KELAPA SAWIT SEBAGAI PEWARNA ALAM KAIN SASIRANGAN : ISU DAN PENGEMBANGAN Rianti Indah Lestari
Journal of Industrial Engineering and Operation Management Vol 2, No 2 (2019)
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al Banjari Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/jieom.v2i2.2667

Abstract

Seiring berkembangnya industri fashion di Indonesia tidak terlepas dari peran pelaku ekonomi kreatif dalam mengembangkan potensi kain tradisional dalam upaya pelestarian warisan budaya nasional. Perkembangan kain tradisional yang diminati semua kalangan baik dari desain maupun warna nya menjadi isu utama untuk penerapan produk yang berkelanjutan khususnya pemanfaatan produk ramah lingkungan. Kain sasirangan yang merupakan kain tradisional dari Kalimantan Selatan juga berpotensi untuk memproduksi kain yang ramah lingkungan. Tujuannya adalah untuk mengurangi pencemaran lingkungan akibat penggunaan zat warna kimia. Pada penelitian ini mengulas potensi cangkang kelapa sawit sebagai salah satu limbah perkebunan kelapa sawit yang digunakan untuk bahan baku utama pembuatan zat warna alam. Ketersediaan zat warna alam tidak lepas dari informasi terkait potensi jumlah cangkang kelapa sawit yang ada di Kalimantan Selatan. Selain itu untuk keberlanjutan penelitian diperlukan struktur rantai suplai bahan baku yaitu Supply Chain Operation Model in terms of Raw Material (SC-OPM-RM) sebagai model untuk perancangan jaringan suplai. Kata Kunci : Kain Sasirangan, Ramah lingkungan, Zat warna alam, Cangkang kelapa sawit, SC-OPM_RM.  
Pengendalian Kualitas Kesehatan dalam Upaya Penanggulangan Gizi Buruk pada Balita: Literatur Review Ilmiati Ilmiati; Jamhary Jamhary; Rianti Indah Lestari
DINAMIKA KESEHATAN: JURNAL KEBIDANAN DAN KEPERAWATAN Vol 11, No 1 (2020): Dinamika Kesehatan Jurnal Kebidanan dan Keperawatan
Publisher : Universitas Sari Mulia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (81.498 KB) | DOI: 10.33859/dksm.v11i1.563

Abstract

Latar belakang: Gizi buruk pada balita merupakan salah satu permasalahan serius yang terjadi di Indonesia. Kurangnya pengetahuan tentang gizi buruk, keterbatasan sarana prasarana yang mendukung, serta peran kolaborasi lintas profesi yang belum optimal merupakan faktor-faktor penyebab belum tercapainya upaya penanganan kesehatan khususnya pada penanggulangan gizi buruk serta pengendalian kualitas yang masih terbatas pada implementasi.Tujuan: Penelitian ini bertujuan untuk mengidentifikasi faktor-faktor penyebab permasalahan gizi buruk di Indonesia serta memberikan rekomendasi dalam penanganan gizi buruk secara berkelanjutan.Metode: Studi literatur digunakan dalam menelaah permasalahan tentang gizi burukHasil: Rekomendasi berupa tools yang relevan untuk pengendalian kualitas kesehatan Kata Kunci: Gizi buruk balita, Faktor penyebab, Tools pengendalian kualitas kesehatanAbstract Background Malnutrition in children is one of the serious problems that occur in Indonesia. Lack of knowledge about malnutrition, Limited of support infrastructure, and The Inter-professional collaboration is not optimal, are factors that the prevention of malnutrition has not achieved. Moreover, the quality control is still limited to implementation.Objective The purpose of this study was to identify the factors that cause malnutrition problems in Indonesia and provide a recommendation about managing of malnutrition sustainability.Methods Some of the literature reviews are used in examining problems regarding malnutritionResults Recommendation of relevant tools for quality control of healthcare Key Words Malnutrition in children, Cause of factors, Quality control of healthcare tools
Application of Coffee Skin-Based Green Packaging Arminas; A.Dian SryRezki; Rianti Indah Lestari; Riskawati; Masbin Dahlan
Jurnal Internasional Teknik, Teknologi dan Ilmu Pengetahuan Alam Vol 3 No 2 (2021): International Journal of Engineering, Technology and Natural Sciences
Publisher : University of Technology Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (449.81 KB) | DOI: 10.46923/ijets.v3i2.128

Abstract

The concept of "Green" is evolving with new innovations and techniques to protect environmental sustainability, embodied by corporate social responsibility, green manufacturing, waste reduction, recycling and manufacturing of sustainable supply chains and environmentally friendly supply chains. To reduce the use of plastic packaging, the industrial world is turning to green packaging. The eco-friendly packaging that was the subject of the study was a cellulose-based polymer made from cellulose, a major component in plant tissue. Coffee pulp has a high hydrated cellulose microfibrils with a unique morphology using certain chemical treatments. The content of this cellulose can be used as environmentally friendly packaging paper that will be used as packaging of processed coffee products. The method used in this study is by chemical means to remove the lignin content on the coffee skin as well as mechanical methods in the manufacturing process. In this study conducted four (4) experimental scenarios to produce a strong coffee skin packaging and have smooth fiber. From the experiment it was obtained that the packaging with a coffee skin proportion of 33.33% and 66.67% used paper waste had the highest tensile strength with a maximum load that could be held 94.2183 N and a maximum length increase of 11.0262 mm due to finer and denser scrap paper waste fibers binding together to fill the gaps of used paper fibers that had hollowed out adhesive. This ratio also shows good resistance when made into coffee product packaging so that the packaging used becomes environmentally friendly packaging by utilizing coffee waste itself, to produce pulp from coffee skin which is further used as raw material for making coffee packaging.
Perencanaan Kapasitas Produksi Menggunakan Metode Rough Cut Capacity Planning pada Home Industry Roti NK Rianti Indah Lestari; Sukriyah Buwarda; A.Dian Sry Rezki Natsir; Riskawati
Jurnal Serambi Engineering Vol. 9 No. 3 (2024): Juli 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Home industry is a type of SME (Small and Medium Enterprise) that can promote community self-reliance and boost Indonesia's economic growth. NK Bread Home Industry produces various types of bread, including white bread, gembul bread and sweet bread. This home-based industry uses a make-to-order production system, with production levels based on orders. In order to anticipate fluctuations in demand, this industry also maintains stocks. The main problem for this cottage industry is the lack of accuracy in inventory planning due to the lack of demand forecasting. As a result, production is based on experience. In addition, production output is not maximised due to the lack of production capacity planning. This research aims to plan production capacity using the RCCP (Rough-Cut Capacity Planning) method with the BOLA (Bill of Labor Approach). The results obtained show that the required capacity is 1878.50 units, which is greater than the available capacity of 1417.26 units per period. In order to solve this problem, recommendations are made, such as the need to increase the number of workers, the number of machines, the adjustment of the production rate and the use of subcontracting. With these suggestions, it is expected that the production house will be able to maximise capacity, leading to an increase in production output.
Identifikasi Pemborosan Pada Proses Produksi Jamur Tiram Dengan Pendekatan Lean Manufacturing (Studi Kasus pada UMKM XYZ) Rianti Indah Lestari; Nur Khaerani Busri
Jurnal Industri dan Teknologi Samawa Vol 6 No 1 (2025): EDISI 11
Publisher : Program Studi Teknik Industri Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/jitsa.v6i1.5318

Abstract

XYZ MSMEs are oyster mushroom cultivation businesses by making Baglogs (planting media) which are used as mushroom growth media. The obstacle faced by XYZ MSMEs is that the demand is not met by an average of 70% caused by the non-achievement of mushroom production against the production target of 500 kg/month, this is due to a baglog defect of 40%. This research aims to identify non-value-added activities that can affect the production process. The method used in this study is using the Lean Manufacturing approach which includes three stages, namely Value Stream Mapping (VSM), Process Activity Mapping (PAM) and Fault Tree Analysis (FTA). The results of this study showed that there was a decrease in production process time of 252 minutes or 4 hours and 2 minutes from the total time before the repair of 58,592 minutes to 58,340 minutes. In addition, 5 (five) types of waste were also obtained, including waiting time, operation, transportation, motion and defect product. Based on the waste obtained, the factors that cause waste are identified using FTAs. Based on the results of the identification, improvement proposals were given, namely placing raw materials in the same place, providing work equipment (gas and plastic baglogs), supplying equipment racks, using material handling in the form of thrusters, increasing the number of operators and implementing SOPs in each baglog production process.
ANALISIS POTENSI BAHAYA UNTUK MEMINIMALISIR KECELAKAAN KERJA MENGGUNAKAN METODE HAZOP (HAZARD AND OPERABILITY STUDY) DI PT. PEMBANGUNAN PERUMAHAN (PERSERO) TBK Fitri Junianti; Rianti Indah Lestari; Iksan Adiasa; Siti Nuraisah A. Manaap
Jurnal Industri dan Teknologi Samawa Vol 6 No 1 (2025): EDISI 11
Publisher : Program Studi Teknik Industri Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/jitsa.v6i1.5406

Abstract

PT. Pembangunan Perumahan (Persero) Tbk merupakan yang bergerak di bidang perencanaan dan konstruksi bangunan yang berfokus pada pembangunan gedung bertingkat, jalan, jembatan, bendungan dan irigasi, serta pembangkit listrik. Salah satu proses pembangunan yang dilakukan adalah proyek pembangunan Bendungan Tiu Suntuk paket II yang ada di Taliwang, Kabupaten Sumbawa Barat. Berdasarkan hasil observasi, ditemukan adanya potensi bahaya yang dapat menyebabkan kecelakaan kerja. Hal ini dapat menyebabkan pekerja mengalami cidera yang berujung pada kecacatan fisik bahkan dapat mengakibatkan kematian. Penelitian ini menggunakan metode Hazard and Operability Study (HAZOP) dengan tujuan mengidentifikasi dan menganalisis bahaya yang timbul akibat dari kecelakaan kerja serta memberikan usulan perbaikan untuk meminimalisir risiko kecelakaan kerja. Hasil penelitian didapatkan pada proses shotcrete didapatkan 8 kegiatan yang berpotensi membahayakan di PT. PP (Persero) Tbk dengan 37,5 % potensi bahaya dengan tingkat risiko rendah, 37,5 % potensi bahaya dengan tingkat risiko tinggi, 25 % potensi bahaya dengan tingkat risiko ekstrim. Rekomendasi perbaikan yaitu perlu membuat mengatur penjadwalan untuk pelatihan K3 membuat SOP dan worksheet penggunaan APD di area kerja serta menggunakan APD yang lengkap sesuai pekerjaan yang dilakukan. Diharapkan dari penelitian ini dapat meminimalisir risiko terjadinya kecelakaan kerja di PT. PP (Persero) Tbk sehingga pekerja dapat bekerja dengan selamat.
Co-Authors A.Dian Sry Rezki Natsir A.Dian SryRezki Arminas Fitri Junianti Iksan Adiasa Ilmiati Ilmiati Jamhary Jamhary Masbin Dahlan Nur Khaerani Busri Riani Ayu Lestari Riskawati Riskawati Siti Nuraisah A. Manaap Sukriyah Buwarda