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All Journal SMARTek SAINSMAT Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Sains Materi Indonesia Gravitasi JFA (Jurnal Fisika dan Aplikasinya) Jurnal Fisika FLUX Gravitasi: Jurnal Pendidikan Fisika dan Sains Jurnal Fisika dan Terapannya Movere Journal Jurnal Teknik Mesin
Nurlaela Rauf
University Of Hasanuddin
Astronomy Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Deskripsi Kondisi Akustik Ruang Masjid Al Markaz Al Islami Makassar Mariani, Mariani; Rauf, Nurlaela
SMARTek Vol 6, No 4 (2008)
Publisher : SMARTek

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (718.692 KB)

Abstract

Tulisan ini memaparkan kondisi objektif  akustik ruang masjid Al Markaz Al Islami Makassar dan faktor-faktor yang memengaruhi kondisi tersebut. Masjid Al Markaz Al Islami adalah salah satu masjid yang cukup dikenal di kota Makassar dengan luas ruang ibadah 4.016 m2 dan dapat menampung 6.000 jamaah. Kondisi awal akustik ruang masjid yang diamati secara subjektif adalah distribusi suara yang tidak merata di dalam ruang serta bunyi dengung dan gema yang menimbulkan ketidaknyamanan mendengar. Pemaparan kondisi objektif akustik ruang masjid didasarkan pada hasil pengukuran langsung Tingkat Tekanan Suara dan Tingkat Bising menggunakan Sound Level Meter, serta pengukuran Waktu Dengung dan Tingkat Kejelasan Pembicaraan dengan analisis matematis. Pengukuran dilakukan pada kondisi riil pada bulan November-Desember 2007
Peran Internet dalam Proses Pendidikan Fisika di SMAN 1 Bontonompo Kabupaten Gowa Nurdin, Wira Bahari; Surungan, Tasrief; Bansawang, Bansawang; Rauf, Nurlaela; Gareso, Paulus L.; Juarlin, Eko
Sainsmat : Jurnal Ilmiah Ilmu Pengetahuan Alam Vol 6, No 1 (2017): Maret
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (229.387 KB) | DOI: 10.35580/sainsmat6164542017

Abstract

Perbaikan penguasaan ilmu fisika kepada masyarakat umum merupakan roadmap pendidikan Program Studi Fisika Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Hasanuddin. Dalam kegiatan pengabdian masyarakat telah dilakukan upaya peningkatan tingkat pemahaman ilmu fisika di kalangan pelajar dan pengajar SMAN I Bontonompo. Keluaran kegiatan ini adalah peningkataan kemampuan berupa pengayaan cara penyelesaian soal dalam berbagai bidang fisika. Dengan demikian para peserta akan memiliki kemampuan menyelesaikan soal–soal (Problem Solving) tersebut baik dalam bidang teori maupun eksperimen fisika sebagai bekal bagi anak didik untuk dapat berlomba dalam berbagai event kompetisi seperti olimpiade sains dan ONMIPA. Selain itu diperkenalkan cara menggunakan internet secara optimal dalam mempelajari ilmu fisika. Dengan melakukan survei terhadap 105 orang siswa di SMAN I Bontonompo dengan metode sampel acak diperoleh kesimpulan bahwa seluruh siswa telah mampu menggunakan mesin  cari di internet, 91% menyatakan menggunakan internet dalam pencarian kumpulan soal fisika, 90% org menyatakan membantu dalam mencari bahan catatan kuliah atau buku, 87% menyatakan internet membantu dalam menyelesaikan jawaban, 21% menyatakan pernah melihat video pembelajaran fisika di internet, dan 11% menyatakan pernah berdiskusi tentang masalah fisika di internet. Kemudian mata pelajaran di SMA yang menurut siswa tersebut yang paling susah adalah fisika (78%), matematika (19%), kimia (6%), bahasa Inggris (2%), dan biologi (1%). Terhadap penggunaan internet rata-rata sehari, 24%  menjawab 1 jam, 28% menjawab 2 jam, 15% 3 jam, 5% 4 jam, dan 10%  diatas 5 jam.
CHARACTERIZATION OF ACTIVE CARBON FROM COCONUT SHELL USING X-RAY DIFFRACTION (X-RD) AND SEM-EDX TECHNIQUES Bakti, Andi Ikhtiar; Gareso, Paulus Lobo; Rauf, Nurlaela
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol 8, No 2 (2018)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v8n2.p115-122

Abstract

Activated carbon is produced from the coconut shell through physical and chemical activation. The pyrolysis method was employed in this research for physical activation at an optimum temperature of 600oC and 1,000oC, for chemical activation immersed using 10% Na2CO3 activating agent. This research has produced two samples, namely the physical activation of 1,000oC and the physics-chemical activation of Na2CO3. The X-Ray Diffraction (X-RD) spectrum of activated carbon in the samples 1,000oC and Na2CO3 contained silicate minerals, iron ore and quartz, respectively, and it showed the formation of carbon and graphite structures in the hkl (002) and (100) planes. Through Scherrer?s method, the average size of the Na2CO3 crystals sample is 15.03 nm and the sample crystal sample of 1,000oC is 54.53 nm; the size of the Nano-scale crystals was formed when the temperature increases ? 600° C. The X-RD resulted the percentage of elemental content carbon phase volume fraction (Fv) and impurity (I) in the 1,000oC sample of 75.61%, 24.39% and the Na2CO3 sample of 77.87%, 22.13% . These results indicate that the carbon content in chemical activation is much better than the physics activation. SEM results with magnification of 5,000x, it is very clear the porosity formed of the 10 ?m picture size are 0.8 ?m in Na2CO3 sample and 1.00 ?m in 1,000oC sample.
Characterization of Active Carbon from Coconut Shell using X-Ray Diffraction (X-RD) and SEM-EDX Techniques Bakti, Andi Ikhtiar; Gareso, Paulus Lobo; Rauf, Nurlaela
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol 8, No 2 (2018)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v8n2.p115-122

Abstract

Activated carbon is produced from the coconut shell through physical and chemical activation. The pyrolysis method was employed in this research for physical activation at an optimum temperature of 600oC and 1,000oC, for chemical activation immersed using 10% Na2CO3 activating agent. This research has produced two samples, namely the physical activation of 1,000oC and the physics-chemical activation of Na2CO3. The X-Ray Diffraction (X-RD) spectrum of activated carbon in the samples 1,000oC and Na2CO3 contained silicate minerals, iron ore and quartz, respectively, and it showed the formation of carbon and graphite structures in the hkl (002) and (100) planes. Through Scherrer’s method, the average size of the Na2CO3 crystals sample is 15.03 nm and the sample crystal sample of 1,000oC is 54.53 nm; the size of the Nano-scale crystals was formed when the temperature increases ≥ 600° C. The X-RD resulted the percentage of elemental content carbon phase volume fraction (Fv) and impurity (I) in the 1,000oC sample of 75.61%, 24.39% and the Na2CO3 sample of 77.87%, 22.13% . These results indicate that the carbon content in chemical activation is much better than the physics activation. SEM results with magnification of 5,000x, it is very clear the porosity formed of the 10 μm picture size are 0.8 μm in Na2CO3 sample and 1.00 μm in 1,000oC sample.
Deteksi Perubahan Komposisi Cat Dinding Akibat Paparan Sinar X: (Detection of Composition Changes in Wall Paint Due to X-Ray Exposure) Wandi Janwar; Suryani, Sri; Rauf, Nurlaela
Gravitasi Vol. 19 No. 1 (2020)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/gravitasi.v19i1.15167

Abstract

Selama ini penelitian hanya fokus pada cara dan pemakaian alat proteksi untuk pasien dan pekerja radiasi. Bahan proteksi paparan radiasi ionik lain yang penting bagi pasien, pekerja radiasi, bahkan masyarakat umum adalah dinding ruangan radiologi. Dinding ruangan radiologi mempunyai syarat tertentu, seperti ketebalan, komposisi bahan, dan warna. Dinding harus berwarna putih agar bersih dari kotoran maupun mikroorganisme. Dinding ruangan tidak terkena paparan langsung, melainkan melalui hamburan, sehingga dosis paparan rendah. Dengan memvariasikan tegangan tabung sinar X seperti yang digunakan pada diagnostik, dilakukan pengamatan terhadap perubahan komposisi cat dinding dengan X-Ray Flourosence (XRF). Hasil penelitian menunjukkan perubahan besar pada laju dosis 1,19 mGy/s atau pada tegangan tabung 80 kV. Senyawa yang terkandung dalam cat menurun persentasenya, bahkan senyawa K2O dan Nb2O5 tidak terdeteksi. Hal ini menunjukkan bahwa jumlah pemakaian sinar X konvensional yang tinggi akan meningkatkan kerusakan cat dinding ruang radiologi. Kata kunci: Sinar X, cat dinding, X-Ray Flouroawnce (XRF), diagnostik
Evaluasi Tingkat Kebisingan Pada SMK Darussalam Makassar: (Evaluation of Noise Level at SMK Darussalam Makassar) Hamsi, Taufik; Rauf, Nurlaela; Tahir, Dahlang
Gravitasi Vol. 20 No. 1 (2021):
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/gravitasi.v20i1.15526

Abstract

Penelitian mengenai tingkat kebisingan di SMK Darussalam Makassar menggunakan alat sound level meter. Tingkat kebisingan di ukur di 5 titik. Pada penelitian ini aspek yang dianalisis adalah tingkat polusi bising dan hubungannya dengan jumlah kendaraan yang melintas di depan sekolah. Secara umum kebisingan di SMK Darussalam Makassar berada pada level dapat di terima sampai tidak dapat di terima dengan nilai berkisar 54,6 dB – 88,1 dB. Semakin kedalam letak titik pengukuran kebisingan di SMK Darussalam, maka semakin rendah pula tingkat kebisingan yang terjadi.
PENGUKURAN ANISOTROPI MAGNETIK SUSCEPTIBILITY BATUAN VULKANIK GUNUNG MERAPI DI JAWA TENGAH Wahyuni Wahyuni; Nurlaela Rauf; Satria Bijaksana
Jurnal Sains Materi Indonesia Vol 3, No 2: FEBRUARI 2002
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (489.366 KB) | DOI: 10.17146/jusami.2002.3.2.5240

Abstract

PENGUKURAN ANISOTROPI MAGNETIK SUSCEPTIBILITY BATUAN VULKANIK GUNUNG MERAPI DI JAWA TENGAH. Anisotropy Magnetic Susceptibility (AMS) adalah gambaran perbedaan harga susceptibility magnetik pada suatu sampel yang bergantung pada arah atau orientasi medan yang mempengaruhinya. Dua puluh dua sampel dari empat daerah gunung merapi, di Jawa Tengah telah diukur anisotropi susceptibility magnetiknya dengan menggunakan MSZ Bartington. Kedua puluh dua sampel tersebut menunujukkan susceptibility yang tinggi sampai dengan 8037,5 x 10-5 (SI unit). Sebelas sampel sangat anisotropik (dengan derajat anisotropi mencapai 16%). Sampel lainnya memiliki derajat anisotropi kurang dari 6% (dari daerah pasar bubar, Kali Kuning, Kali Gendong, Kali Gendol Utara), hal ini menunjukkan bahwa sebagian sampel dapat digunakan dalam paleomagnetik.
Preparation and Characterization of Dental Porcelain Nurlaela Rauf
Jurnal Fisika dan Aplikasinya Vol 7, No 1 (2011)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (40.97 KB) | DOI: 10.12962/j24604682.v7i1.897

Abstract

Feldspar and quart from the local source is used as a base material for dental porcelain. The physical and chemical properties have been performed. The x-rays fluorescence is used to analyze the chemical composition. The composition of material and temperature preparation of dental porcelain contributes to shrink of burning and hardness, which is increased along with the increasing of treatment temperature.
Characterization of Active Carbon from Coconut Shell using X-Ray Diffraction (X-RD) and SEM-EDX Techniques Andi Ikhtiar Bakti; Paulus Lobo Gareso; Nurlaela Rauf
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 8 No. 2 (2018)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v8n2.p115-122

Abstract

Activated carbon is produced from the coconut shell through physical and chemical activation. The pyrolysis method was employed in this research for physical activation at an optimum temperature of 600oC and 1,000oC, for chemical activation immersed using 10% Na2CO3 activating agent. This research has produced two samples, namely the physical activation of 1,000oC and the physics-chemical activation of Na2CO3. The X-Ray Diffraction (X-RD) spectrum of activated carbon in the samples 1,000oC and Na2CO3 contained silicate minerals, iron ore and quartz, respectively, and it showed the formation of carbon and graphite structures in the hkl (002) and (100) planes. Through Scherrers method, the average size of the Na2CO3 crystals sample is 15.03 nm and the sample crystal sample of 1,000oC is 54.53 nm; the size of the Nano-scale crystals was formed when the temperature increases ≥ 600° C. The X-RD resulted the percentage of elemental content carbon phase volume fraction (Fv) and impurity (I) in the 1,000oC sample of 75.61%, 24.39% and the Na2CO3 sample of 77.87%, 22.13% . These results indicate that the carbon content in chemical activation is much better than the physics activation. SEM results with magnification of 5,000x, it is very clear the porosity formed of the 10 μm picture size are 0.8 μm in Na2CO3 sample and 1.00 μm in 1,000oC sample.
Heat Flow Transport Model by Gauss-Seidel Type Iteration Methods for Gas and Solid Materials Nurlaela Rauf; Heryanto Haeruddin; Roni Rahmat; Dahlang Tahir
Jurnal Fisika FLUX Vol 18, No 1 (2021): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1569.186 KB) | DOI: 10.20527/flux.v18i1.10128

Abstract

Technological processes for modification of materials, deposition, and prevented fumes in the pyrolysis processes are used gases materials in the medium with vacuum pressure or atmospheric air pressure. Therefore, it is essential to understand heat flow transport for designing an efficient reactor or find the substrate's excellent position in the reactor or furnace for growing materials. We evaluated the energy transfer phenomena in the form of temperature distribution and heat flow for various heating sources for the gases and solid materials by Gauss-Seidel equation. The thermal conductivity coefficient (k), number of heating sources, and position of heating sources show an essential parameter for transmitting the distribution of the heat. For high k value shows efficiently for heat transfer at low temperature due to the atom's position close each other. The heat also affects to the phonon and lattice vibration like a wave which  successfully shows these phenomena in this study.
Co-Authors Al-Qarny, Uwais alfatih, isanawati Bakti, Andi Ikhtiar Bansawang, Bansawang Dahlang Tahir Dahlang Tahir Gareso, Paulus L. Gareso, Paulus Lobo Hamsi, Taufik Heryanto Haeruddin Juarlin, Eko Mariani Mariani Nurhasna, Yuni Bandhaso Nurul, Nurul Mutaharah Ridjal, Syamsul Roni Rahmat Satria Bijaksana Sri Suryani Tasrief, Tasrief Wahyuni Wahyuni Wandi Janwar Wira Bahari Nurdin