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All Journal Media Teknologi Hasil Perikanan Jurnal Pangan dan Agroindustri Math Educa Journal Jurnal Optimalisasi Jurnal Pembelajaran dan Biologi Nukleus Journal of Nutrition Science Jurnal Teknologi Pengolahan Pertanian The International Science of Health Journal
Rahma, Cukri
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Control & Systems Engineering Dentistry Earth & Planetary Sciences Education Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Medicine & Pharmacology Nursing Public Health Veterinary

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Journal : Jurnal Optimalisasi

 1 
Penggunaan Tawas (Al2(SO4)3) dalam Menurunkan Kadar Total Suspended Solid Air Limbah Batubara Rahma, Cukri; Niani, Cukri Rahmi
Jurnal Optimalisasi Vol 7, No 1 (2021): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v7i1.2562

Abstract

Wastewater is one of the byproducts produced by coal mining companies. The wastewater contains suspended particles as well as heavy metals. Various attempts have been made to treat wastewater before it is discharged into the environment. This is done so that the waste water does not damage the environment. One way to do this is to settle suspended particles in wastewater or what is known as TSS (Total Suspended solite) using the coagulation-flocculation method. The coagulant used in this study is alum Al2 (SO4) 3. This research was conducted to determine the optimum dose or level of addition of alum into wastewater. The addition of alum is carried out in different doses, this is adjusted to the volume and discharge of waste water that is flowed to the WMP (Water Monitoring Point). The optimum dose of adding or using alum Al2 (SO4) 3 into WPM is 0.03 g / L for WMP 11, and 0.05 g/L for WMP 13.
Analisis Kebutuhan Jumlah Tenaga Kerja Optimal Berdasarkan Penilaian Beban Kerja Fisik Menggunakan Cardiovascular Load dan Stopwatch Time Study (Studi Kasus UD. Batu Alam Kabupaten Aceh Barat) Sofiyanurriyanti, Sofiyanurriyanti; Rahma, Cukri; Pandria, T. M Azis; Hardianto, Hardianto
Jurnal Optimalisasi Vol 7, No 1 (2021): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v7i1.3554

Abstract

This study aims to identify complaints of musculoskletal disorders experienced by operators due to load imbalance received by workers using the Standard Nordic Quistionaire, determine the workload received by workers based on the cardiovascular load method in the paving block manufacturing process and determine the optimal number of workers. according to company needs. about making paving blocks. Based on the results of the SNQ questionnaire distribution, the highest complaints occurred at the work station mixing cement with sand in making paving blocks and at the station for lifting raw materials to the tub for the paving block molding process with a percentage of 80.36 categorized as quite heavy, the second highest percentage was at the transfer station for paving blocks. which is printed to the drying place and moving the paving block to the soaking place with a percentage of 79.46% is categorized as quite heavy and the smallest percentage is at the paving block printing workstation with a percentage of 57.14% categorized as heavy, to overcome this it is recommended to increase the number of workers for the workload and complaints experienced by operators related to the risk of spinal cord injury (musculoskeletal) due to multiple work (Multi Tacking). Workload received by workers based on the cardiovascular load method in the process of making paving blocks with a workload value of 38.92%, the second highest workload with a load value of 34.68% and the third highest workload, namely the Nizam operator with a workload value of 31.60 so that the number The proposed workforce must optimally be employed in accordance with the company's needs in making paving blocks, namely 2 workers with the previous number of workers being 3 workers where the workers also work concurrently in carrying out their work activities.
OPTIMALISASI PELAYANAN UNIT BPJS RSUD MELALUI PERHITUNGAN WAKTU SIKLUS OPERATOR PELAYANAN SEP Cukri Rahma; Angga Ariska; Villa Afriasari
Jurnal Optimalisasi Vol 4, No 1 (2018): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v4i1.1278

Abstract

Now, industry that is engaged in services has increased, this requires the procurement of services must be able to provide optimal service. The business is needed for the company to remain competitive in other service industries. One of the main factors that greatly influences how services are provided. The quality of production is very dependent on the efficient use of time. Measurement of work time can be seen from the production and operating activities in the company whether efficient or not. The more effective and efficient the employee completes a work cycle, the more productive and the resulting output will be as high. Cut Nyak Dhien Regional Hospital is a company engaged in the field of health supply. Cutnyak Dhien Regional Hospital has one service unit, one of which is the Health BPJS unit, where the SEP card (patient eligibility letter) is prepared in this unit. This SEP will be brought to certain poly-poly. The problem found was that operators had to complete SEP for almost an average of five hundred patients per day. Therefore it is necessary to calculate the work time needed to complete the SEP. One way to measure how much work time is needed by an operator in making an SEP is to calculate the cycle time of the SEP manufacturing process. Cycle time is one way to find out the operator's working time in the technique of measuring work time. Measurements were made directly using stop-hours. The measurement was repeated three times with 10 observations for each operator. The measurement results show that the operator can complete SEP within the normal timeframe of around 50 to 70 seconds per patient.
SINTESIS DAN KARAKTERISASI MATERIAL FOTOKATALIS Na2Ti6O13 MENGGUNAKAN METODE HIDROTERMAL Cukri Rahma
Jurnal Optimalisasi Vol 3, No 4 (2017): Jurnal Optimalisasi
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (514.209 KB) | DOI: 10.35308/jopt.v3i4.263

Abstract

hydrotermal method. Hydrotermal method is environmentally frendly way. This matter becaused hydrothermal method is using materials that are safe for life. Sodium hexa titanate is a semiconductor matterial that is widely used in various fields, such as is used as a photocatalyst material. From the characterization results, Na2Ti6O13 with size of 48.44 nm, and energy gap of 3.40 eV has been prepared. Na2Ti6O13 has a monoclinic crystal system with lattice parameters of a = 15.210 Å, b = 3.744 Å, c = 9.165 Å, and β = 99.050o. Photocatalyst activity was tested under UV light irradiation for 3 hours. Degradation of methylene blue (MB) by Na2Ti6O13 is found to be at 51%.Keywords: Photocatalyst, Na2Ti6O13, Degradation methylene blue
Co-Authors Adico Notarza Aulia Angga Ariska Anwar, Sufyan Cukri Rahmi Niani Eva Flourentina Kusumawardani Fadillah, Mardi Fikri Faidul Jihad Friyuanita Lubis Hanif Muchdatul Ayunda Itza Mulyani Kurniati , Yeni Laila Apriani Hasanah Harahap Mardi Fadillah Marniati Marniati Muliadi, Teuku Nasrianti Syam Putri, Enda Silvia Renita Fransisca Siahaan Rinawati Rinawati Safrida Safrida S SATRIYAS ILYAS Slamet Budijanto Sofiyanurriyanti T. M. Azis Pandria Villa Afria sari Yusi Hidjrawan