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All Journal Chimica Didactica Acta, Journal of Chemistry and Chemistry Education Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Kesehatan Masyarakat Jurnal Pendidikan Sains Indonesia Jurnal Manajemen Indonesia Jurnal Ilmiah Wahana Pendidikan Jurnal Sanitasi Profesional Indonesia Jurnal Rekayasa Kimia & Lingkungan
Ilham Maulana
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Religion Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Public Health Social Sciences Other

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Analysis of turbulence models performance for the predictions of flow yield, efficiency, and pressure drop of a gas-solid cyclone separator Novi Sylvia; . Yunardi; Ilham Maulana; . Elwina; . Wusnah; Yazid Bindar
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 2 (2011): Engineering
Publisher : Syiah Kuala University

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Abstract

This paper presents the results obtained from the application of computational fluid dynamics (CFD) to modelling the flow field of a Lapple cyclone and to optimizing the cyclone based upon its geometrical parameters. A pre-processor software GAMBIT was employed to set up the configuration, discretisation, and boundary conditions of the cyclone.  The characteristics of the cyclone being studied was 0.2 m in diameter, receiving a gas flow rate of 0.1 m3/s with a particle mass loading of 0.01 kg/m3.  A commercial CFD code FLUENT 6.2.16 was employed to simulate the flow field and particle dynamics in the cyclone. The objective of this research was to investigate the performance of a number of turbulence models on the prediction of the flow field, collection efficiency and pressure drop in the Lapple cyclone. A number of five turbulence models under Reynolds Averaged Navier Stokes (RANS) category, including Spallart-Allmaras, standard k-ε model, RNG k-ε model, standard k-ω model, and Reynolds Stress Model (RSM) were examined in the simulation of the flow field and particle dynamics inside the cyclone. A validation of all calculation was performed by comparing the predicted results in terms of axial and tangential velocities, efficiency and pressure drop against experimental data of a Lapple cyclone taken from literature. The results of the investigation show that out of five turbulence models being tested, the RSM presented the best predicted results. The predictions of axial and tangential velocities as well as cyclone efficiency by this model are in excellent agreement with the experimental data.  Although the pressure drop in the cyclone is under-predicted, the RSM predictions are far better than those of other model. Other turbulence models are over-predicted and under-predicted the axial and tangential velocity, respectively.  With respect to efficiency and pressure drop of the cyclone, other models are capable of following the trend of the experimental data but they failed to agree with the experimental values.  These results suggest that the RSM is the most suitable turbulence model to represent the flow field and particle dynamics inside a cyclone gas-solid separator.
Potret Masyarakat Urban dalam Cerpen Vampir dan Darah Karya Intan Paramadhita Ilham Maulana; Imam Muhtarom; Dewi Herlina Sugiarti
Jurnal Ilmiah Wahana Pendidikan Vol 8 No 1 (2022): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.5813559

Abstract

This study aims to examine urban portraits in the collection of short stories Sihir Perempuan by Intan Paramaditha. The approach used in this research is a qualitative approach with a descriptive method. The results showed that in the short story Vampire, the physical aspects of urban society were found, namely (1) social heterogeneity in the difference in social status between Irwan and Saras, (2) The secondary relationship in the short story is characterized by the lack of personal interaction involving the two, (3) high mobility The city lies in Saras' desire to develop his potential as a secretary where increasing work competence will also increase social status in society, (4) Individualization as a result of a person's high level of education so that he feels able to determine what is best for him without pressure from others narrated by Intan Paramaditha through Saras who accepted Irwan's offer without asking other people's considerations, and (5) Spatial segregation was raised through the discussion of cafes and stalls that marked the urban aspect
PERBANDINGAN PENGGUNAAN MEDIA VIRTUAL LAB SIMULASI PhET (Physics Education Tekhnology) DENGAN METODE EKSPERIMEN TERHADAP MOTIVASI DAN AKTIVITAS BELAJAR PESERTA DIDIK PADA MATERI KELARUTAN DAN HASIL KALI KELARUTAN Marlinda Marlinda; Abdul Halim; Ilham Maulana
Jurnal Pendidikan Sains Indonesia Vol 4, No 1 (2016): APRIL 2016
Publisher : Universitas Syiah Kuala

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Abstract

Penelitian ini bertujuan untuk membandingkan motivasi dan aktivitas belajar peserta didik pada konsep Kelarutan dan hasil kali kelarutan menggunakan laboratorium Virtual simulasi PhET dengan metode eksperimen. Penelitian dilakukan di SMAN 7 Banda Aceh dengan menggunakan metode quasi eksperimen dengan desain randomized pretest-posttest group. Kelas XI MIA4 menjadi kelas eksperimen I dan kelas XI MIA3 menjadi kelas eksperimen II, masing-masing sebanyak 30 peserta didik. Pengumpulan data dengan menggunakan angket motivasi dan lembar observasi aktivitas belajar peserta didik. Berdasarkan analisis nilai N-gain motivasi kelas eksperimen I sebesar 0,702 dan kelas eksperimen II sebesar 0,510. Hal ini menunjukkan bahwa motivasi kelas eksperimen I lebih tinggi daripada kelas eksperimen II. Peningkatan aktivitas belajar peserta didik pada kelas eksperimen I pada pertemuan awal dengan sebesar 88,61% pada pertemuan kedua menjadi 96,11%, sedangkan kelas eksperimen II pada pertemuan awal sebesar 83,06% meningkat menjadi 89,15% pada pertemuan kedua, sehingga disimpulkan bahwa motivasi dan aktivitas belajar peserta didik pada konsep kelarutan dan hasil kali kelarutan dengan pembelajaran virtual lab simulasi PhET lebih tinggi daripada pembelajaran dengan metode eksperimen.
Computational fluid dynamics of crosswind effect on a flare flame . Wusnah; . Yunardi; Ilham Maulana; . Elwina; Novi Sylvia; Yazid Bindar
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 2 (2011): Engineering
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (218.193 KB)

Abstract

This paper presents the results obtained from the application of computational fluid dynamics (CFD) to modelling the crosswind effect on a turbulent non-premixed flame. A pre-processor software GAMBIT was employed to set up the configuration, discretisation, and boundary conditions of the flame being investigated.  The commercial software Fluent 6.3 was used to perform the calculations of flow and mixing fields as well as combustion. Standard k-ε and eddy dissipation models were selected as solvers for the representation of the turbulence and combustion, respectively.  The results of all calculations are presented in the forms of contour profiles.  During the investigation, the treatment was performed by setting a constant velocity of fuel at 20 m/s with varied cross-wind velocity and by keeping the cross-wind velocity constant at 1.1 m/s with varied fuel velocity.  The results of the investigation showed that the standard k-ε turbulence model in conjunction with Eddy Dissipation Model representing the combustion was capable of producing reliable phenomena of the flow field and reactive scalars field in the turbulent non-premixed flame being investigated. Other results of the investigation showed that increasing the velocity of the crosswind, when the fuel velocity was kept constant, significantly affected the flow field, temperature and species concentrations in the flare flame. On the other hand, when the velocity of the fuel was varied at the constant crosswind velocity, the increasing velocity of the fuel gave positive impact as it enabled to counteract the effect of crosswind on the flare flame
Pengembangan Bahan Ajar Modul pada Materi Hidrokarbon di SMA Negeri 11 Banda Aceh Ayu Rahmi; Yusrizal Yusrizal; Ilham Maulana
Jurnal Pendidikan Sains Indonesia Vol 2, No 1 (2014): APRIL 2014
Publisher : Universitas Syiah Kuala

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Abstract

Penelitian ini bertujuan untuk mengetahui peningkatan pemahaman konsep dan hasil belajar kognitif siswa pada materi hidrokarbon melalui penggunaan pengembangan bahan ajar modul. Pengembangan modul menggunakan model Hannafin and Peck yang terdiri atas tiga fase, yaitu fase analisis keperluan, desain, serta pengembangan dan implementasi. Penelitian ini menggunakan metode kuantitatif. Sampel diambil secara acak dan terbagi dalam kelas kontrol dan eksperimen. Penelitian dilaksanakan di kelas X SMA Negeri 11 Banda Aceh tahun pelajaran 2012/2013. Pengumpulan data untuk mengetahui peningkatan pemahaman konsep dan hasil belajar kognitif siswa dilakukan melalui tes awal dan tes akhir pada kedua kelas, dan untuk mengetahui tanggapan guru dan siswa terhadap penggunaan modul sebagai bahan ajar pada materi hidrokarbon digunakan angket. Pengolahan data dilakukan melalui beberapa tahapan, diantaranya uji tingkat kesukaran, daya beda, validitas, dan reliabilitas untuk instrumen yang akan digunakan dalam penelitian. Selanjutnya, untuk mengetahui peningkatan pemahaman konsep dan hasil belajar kognitif siswa dilakukan perhitungan N-gain dari hasil tes awal dan tes akhir siswa. Uji hipotesis menggunakan beberapa pengujian, diantaranya uji normalitas, homogenitas, dan uji kesamaan dua rerata. Berdasarkan hasil penelitian dapat disimpulkan bahwa penggunaan modul hidrokarbon dapat meningkatkan pemahaman konsep dan hasil belajar kognitif siswa. Di samping itu, guru dan siswa sangat setuju terhadap penggunaan modul tersebut.
REKOMENDASI MODEL BISNIS INDUSTRI MUSIK POP DAN ROCK DI INDONESIA BERDASARKAN MODEL BUSINESS CANVAS Ilham Maulana; Andry Alamsyah
Jurnal Manajemen Indonesia Vol 14 No 2 (2014)
Publisher : Fakultas Ekonomi dan Bisnis, Telkom University.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (881.97 KB) | DOI: 10.25124/jmi.v14i2.359

Abstract

Perkembangan teknologi informasi dan komunikasi (TIK) dewasa ini menyebabkan perubahan strategi dan model bisnis pada Industri Musik Indonesia. Perubahan tersebut menuntut peningkatan kemampuan untuk beradaptasi terhadap teknologi dalam perencanaan model bisnis industri musik khususnya musik pop dan rock. Penelitian ini bertujuan untuk melihat pola bisnis Industri Musik di Indonesia menggunakan dengan menggunakan framework Business Model Canvas Osterwalder dan Pigneur yang akan dianalisis menggunakan SWOT Analysis Business Model Canvas untuk dapat melihat dan merekomendasikan pola Model Business Canvas Industri Musik di Indonesia. Pada paper ini akan dibahas model bisnis untuk penerbit musik dan penulis lagu agar dapat bertahan pada cepatnya perubahan era TIK saat.
PENGEMBANGAN BAHAN AJAR MODUL PADA MATERI HIDROKARBON DI SMA NEGERI 11 BANDA ACEH Ayu Rahmi; Yusrizal Yusrizal; Ilham Maulana
Chimica Didactica Acta Vol 2, No 1 (2014)
Publisher : FKIP USK

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Abstract

Penelitian ini bertujuan untuk mengetahui peningkatan pemahaman konsep dan hasil belajar kognitif siswa pada materihidrokarbon melalui penggunaan pengembangan bahan ajar modul. Pengembangan modul menggunakan modelHannafin and Peck yang terdiri atas tiga fase, yaitu fase analisis keperluan, desain,serta pengembangan danimplementasi. Penelitian ini menggunakan metode kuantitatif. Sampel diambil secara acak dan terbagi dalam kelaskontrol dan eksperimen. Penelitian dilaksanakan di kelas X SMA Negeri 11 Banda Aceh tahun pelajaran 2012/2013.Pengumpulan data untuk mengetahui peningkatan pemahaman konsep dan hasil belajar kognitif siswa dilakukanmelalui tes awal dan tes akhir pada kedua kelas, dan untuk mengetahui tanggapan guru dan siswa terhadappenggunaan modul sebagai bahan ajar pada materi hidrokarbon digunakan angket. Pengolahan data dilakukan melaluibeberapa tahapan, diantaranya validitas, reliabilitas, uji tingkat kesukaran dan daya beda untuk instrumen yang akandigunakan dalam penelitian. Selanjutnya, untuk mengetahui peningkatan pemahaman konsep dan hasil belajar kognitifsiswa dilakukan perhitungan N-gain dari hasil tes awal dan tes akhir siswa. Uji hipotesis menggunakan beberapapengujian, diantaranya uji normalitas, homogenitas, dan uji kesamaan dua rerata. Berdasarkan hasil penelitian dapatdisimpulkan bahwa penggunaan modul hidrokarbon dapat meningkatkan pemahaman konsep dan hasil belajar kognitifsiswa. Di samping itu, guru dan siswa sangat setuju terhadap penggunaan modul tersebut.
Optimization of cyclone geometry for maximum collection efficiency . Yunardi; Ilham Maulana; . Elwina; . Wusnah; Novi Sylvia; Yazid Bindar
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 1, No 2 (2011): Engineering
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (112.024 KB)

Abstract

This paper presents the results obtained from the application of both computational fluid dynamics (CFD) Fluent 6.3 and Design Expert codes to modelling and optimizing a gas-solid cyclone separator based upon its geometrical parameters. A pre-processor software GAMBIT was employed to set up the configuration, discretisation, and boundary conditions of the cyclone.  A commercial CFD code FLUENT 6.3 was employed to simulate the flow field and particle dynamics in the cyclone. The optimization study was performed under either a constant gas inlet flow rate of 0.075 m3/s or a constant inlet gas velocity of 18 m/s. A response surface methodology with three levels (-1, 0, and +1) was employed as the experimental design. Independent variables to be optimized include the ratio of inlet gas width to diameter of the cyclone, W/D, the ratio of conical length to diameter, Lc/D and the ratio outlet diameter to cyclone diameter De/D. The response variables of collection efficiency and pressure drop were correlated in the forms of quadratic polynomial equations. The simultaneous optimization of the response variables has been implemented using a desirability function (DF) approach, computed with the aid of Design Expert software.  The results of investigation showed that at constant flow rate, the following optimum ratios of W/D =0,28, Lc/D =1,5,  and De/D =0,52 were obtained to give a collection efficiency of 90% and a pressure drop of 155 Pa. At the constant inlet gas velocity, the following optimum ratios of W/D =0,25, Lc/D =1,5,  and De/D =0,57 were obtained to give a collection efficiency of 90% and a pressure drop of 190 Pa. This findings indicate that gas inlet treatment at either constant flow rate or constant inlet gas velocity does not produce significant difference on the collection efficiency, but does give significant influence on the pressure drop.
ANALISIS IMPLEMENTASI HEARING CONSERVATION PROGRAM DI PT KALTIM PRIMA COAL Ilham Maulana; Siswi Jayanti; Suroto Suroto
Jurnal Kesehatan Masyarakat (Undip) Vol 4, No 4 (2016): JULI
Publisher : Fakultas Kesehatan Masyarakat Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (80.481 KB) | DOI: 10.14710/jkm.v4i4.14326

Abstract

Hearing Conservation Program is an ongoing program which aims to prevent hearing loss due to noise in the workplace. Mining process uses multi open pit mining method which involves a lot of heavy equipment with a variety of function, sizes, and types. The purpose of this study was to analyze compliance and quality of implementation of Hearing Conservation Program in PT. Kaltim Prima Coal compared with the applicable regulations and standards. The type of this research was descriptive with the qualitative approach. There were nine workers who participated in this study. Triangulation in this study was the results of indepth interviews with triangulation informants, observation, and applicable standards. The results showed that PT. Kaltim Prima Coal complied 78,6 percent of the required criteria of OSHA and NIOSH elements such as policies, resources, surveys noise, technical and administrative noise control, education and motivation, ear protection, hearing acuity monitoring, recording, and reporting, evaluation, and audit program; while 21,4 percent had not complied. In conclusion, the implementation of hearing conservation program in PT. Kaltim Prima Coal had been good enough. PT. Kaltim Prima Coal should do the noise mapping based on noise exposure dose.
FITOREMEDIASI COD DAN TSS MENGGUNAKAN TANAMAN ECENG GONDOK (Eichhornia Crassipess) DAN KIAMBANG (Salvinia Molesta) PADA LIMBAH LAUNDRY Jubaidi Jubaidi; Ilham Maulana; Arie Ihwan Saputra
Jurnal Sanitasi Profesional Indonesia Vol 3 No 2 (2022): Desember
Publisher : Poltekkes Kemenkes Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33088/jspi.3.2.63-71

Abstract

Today many developing business activities related to clothes washing and ironing services or better known as laundry services. Laundry business is a business engaged in washing and ironing services. This business is widely available in various big cities in Indonesia. The presence of a laundry service business has positive impacts such as providing economic benefits for laundry managers, while negative impacts are in the form of toxic, excessive amounts of laundry waste can contaminate water bodies and cause eutrophication, namely water bodies become rich in dissolved nutrients, and reduce dissolved oxygen content, and the ability the carrying capacity of water bodies for aquatic biota (Raissa and Tangahu, 2017). This study aims to treat laundry wastewater using water hyacinth and kiambang plants to reduce COD and TSS levels in laundry wastewater. This type of research is Quasi Experiment with the Prettes – Posttes design. Water hyacinth and Kiambang plant media can reduce COD and TSS levels within 5, 10, 15 days and are carried out in the laboratory of the Bengkulu Ministry of Health Polytechnic. The results showed that the water hyacinth and kiambang plants reduced COD levels equally, namely 88.89% within 15 days, while the water hyacinth and kiambang plants reduced TSS levels by 17.12% and the highest 18.02% within 15 days. It is hoped that the community can add insight and apply that water hyacinth and kiambang can be used as a medium to reduce COD levels better than reducing TSS in wastewater so that they can meet water quality requirements before being discharged into water bodies.
Co-Authors . Elwina . Wusnah . Yunardi A Halim Andry Alamsyah Arie Ihwan Saputra Ayu Rahmi Dewi Herlina Sugiarti Eka Safitri Imam Muhtarom Jubaidi Jubaidi Khairi Suhud Lelifajri Lelifajri Marlinda Marlinda Nazaruddin Nazaruddin Novi Sylvia Rahmadi Rahmadi Rinaldi Idroes Rinaldi Idroes Siswi Jayanti Supriatno Supriatno Suroto suroto Yazid Bindar Yusrizal Yusrizal