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All Journal Jurnal Sains dan Pendidikan Fisika Komunikasi Fisika Indonesia Phi : Jurnal Pendidikan Fisika dan Terapan JOURNAL ONLINE OF PHYSICS Jurnal Fisika FLUX AL-ISHLAH: Jurnal Pendidikan Jurnal Redoks JISTech (Journal of Islamic Science and Technology) Fisitek : Jurnal Ilmu Fisika dan Teknologi Jurnal Kumparan Fisika Best Journal (Biology Education, Sains and Technology) Jurnal Teknologi Bahan dan Barang Teknik Jurnal Fisika dan Terapannya EINSTEIN (E-JOURNAL) Jurnal Ilmu dan Inovasi Fisika
Abdul Halim Daulay
Universitas Islam Negeri Sumatera Utara, Medan, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Other

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UJI FISIS PAVING BLOCK DENGAN PENAMBAHAN ABU CANGKANG KERANG KEPAH (POLYMESODA EROSA) Masthura, Masthura; Daulay, Abdul Halim; Widya, Eka
Jurnal Sains dan Pendidikan Fisika Vol 17, No 2 (2021): JURNAL SAINS DAN PENDIDIKAN FISIKA
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/jspf.v17i2.22205

Abstract

Abstrak: Uji Fisis Paving Block dengan Penambahan Abu Cangkang Kerang Kepah (Polymesoda erosa). Penelitian ini adalah penelitian ekperimental yang bertujuan untuk mengetahui pengaruh penambahan abu cangkang kerang kepah (Polymesoda erosa) terhadap sifat fisis paving block. Data yang diperoleh merupakan data hasil penelitian yang dilaksanakan pada bulan september–oktober 2020 di Laboratorium UINSU-Medan.  Sifat fisis yang diuji pada penelitian ini adalah densitas, daya serap air, dan porositas.  Penggunaan abu cangkang kerang kepah sebagai pengganti sebagian semen dalam pembuatan paving block  berpengaruh terhadap nilai densitas, daya serap air dan porositas. Pada setiap variasi campuran 5-15%  menghasilkan penurunan nilai densitas yaitu sebesar 1,81, 1,77,  dan 1,62 (g/cm3), mencapai nilai standar densitas beton ringan. Untuk nilai daya serap air pada setiap variasi campuran 0-15% mengalami peningkatan yaitu sebesar 5,88, 6,26, 7,37, dan 7,58%, telah memenuhi SNI 03-0691-1996. Kemudian untuk nilai porositas mengalami peningkatan pada variasi campuran 0-15% yaitu sebesar 9,95, 10,96, 13,41, dan 14,22%. 
Online Learning Problems in the Covid-19 Pandemic for English Education Students Sholihatul Hamidah Daulay; Nurika Khalila Daulay; Abdul Halim Daulay; Reflina Reflina; Siti Maysarah; Dita Khairunnisa
AL-ISHLAH: Jurnal Pendidikan Vol 13, No 3 (2021): AL-ISHLAH: Jurnal Pendidikan
Publisher : STAI Hubbulwathan Duri

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (251.585 KB) | DOI: 10.35445/alishlah.v13i3.779

Abstract

During the Covid-19 pandemic, the teaching and learning process through an online system is one option that can deal with barriers to the teaching and learning process directly to avoid the spread of the virus. This study intends to analyze students’responses to the problems they face during the Covid-19 pandemic and how students deal with online learning during the pandemic. The background of this research is the experience of students with the problems they face during distance learning or online due to Covid-19 which requires students to follow government rules, namely doing distance learning or online. The informants or respondents in this study were several students majoring in . The data collected by the researcher was based on online interviews conducted with 15 students The data analysis used interactive analysis technique by Miles Hubberman. The researcher arranges several questions that must be asked of the participants to obtain the required information. In the online teaching and learning process during the covid-19 pandemic, various problems experienced by students are as follows, the most dominant problem when carrying out online learning is the limited internet network, especially for students who live in rural areas.
Deteksi Potensi Akuifer Tertekan Berdasarkan Metode Geolistrik Konfigurasi Schlumberger (Studi Kasus Desa Saintis, Deli Serdang) lailatul husna lubis; abdul halim daulay; mira yanti harahap
Jurnal Phi Jurnal Pendidikan Fisika dan Fisika Terapan Vol 3, No 1 (2022)
Publisher : Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/p-jpft.v3i1.11234

Abstract

Telah dilakukan penelitian di Dusun XVII, Tambak Bayan, Desa Saentis, Kecamatan Percut Sei Tuan, Kabupaten Deli Serdang, Provinsi Sumatera Utara. Pemilihan lokasi ini dikarenakan menurut wawancara dengan kepala lingkungan serta survey langsung ke lokasi penelitian bahwasanya air sumur di dusun tersebut sebagian besar kondisinya keruh bahkan berbau. Masyarakat setempat juga sudah melakukan pengeboran sumur, namun air yang didapat tetap saja keruh dan berbau tidak sedap. Penelitian ini bertujuan untuk mengetahui litologi bawah permukaan berdasarkan parameter nilai tahanan jenis menggunakan metode geolistrik konfigurasi schlumberger, dan untuk mengetahui potensi akuifer tertekan di lokasi penelitian berdasarkan struktur geologi dan litologi bawah permukaan. Metode yang digunakan yaitu metode geolistrik konfigurasi schlumberger dengan satu lintasan penelitian sepanjang 200 m. Litologi lapisan bawah permukaannya yaitu pasir, pasir kerikil, lempung, pasir, dan lempung. Potensi akuifer tertekan yaitu pada lapisan keempat yang berada pada kedalaman 68,6 meter dengan pasir sebagai material penyusunnya
PENURUNAN KANDUNGAN BOD DAN COD LIMBAH CAIR KELAPA SAWIT MENGGUNAKAN METODE ELEKTROKOAGULASI Masthura Masthura; Abdul Halim Daulay; Lansari Daulay
JISTech (Journal of Islamic Science and Technology) Vol 6, No 2 (2021)
Publisher : UIN Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/jistech.v6i2.10014

Abstract

Research using the electrocoagulation method has been carried out to determine the results of the sample test results for BOD and COD parameters in palm oil mill effluent. The electrodes used n this method are aluminium electrodes with varying adapter voltages of 6, 9, and 12 Volts. Palm oil liquid waste used comes from PTPN IV Adolina Perbaungan. The results of the study showed that before the electrocoagulation method the BOD value obtained was 243 mg/l, while after the electrocoagulation method the best results were obtained at a voltage of 12 Volt with a value of 52,5 mg/l. The value obtained before the electorocoagulation method was carried out on the COD parameter was 649 mg/l and after the electrocoagulation method the best results were obtained at a voltage of 12 Volt, which was 110 mg/l. This shows that the parameter values of BOD and COD in processed waste have decreased and meet the wastewater quality standards for the palm oil industry, namelyb 100 mg/l and 350 mg/l. The higher the value of the applied voltage, the more optimal the levels of BOD and COD.
PENGARUH VARIASI ELEKTRODA TERHADAP KELISTRIKAN SARI KULIT NENAS (ANANAS COMOSUS) SEBAGAI BIOBATERAI Rahmasari Pohan; Masthura Masthura; Abdul Halim Daulay
JISTech (Journal of Islamic Science and Technology) Vol 6, No 2 (2021)
Publisher : UIN Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/jistech.v6i2.11440

Abstract

The need for an electrical energy source is currently a very necessary thing, therefore researchers conducted experiments on the use of pineapple peel (ananas  comosus) extract as an electrolyte solution with a variety of electrodes. This research was conducted with the aim of generating voltage, electric current, and strength values. The measure of the holding capacity of the solution used were 50 ml, 100 ml, 150 ml, 200 ml, and 250 ml. The electrodes to be used are in the form of copper-zinc, copper-iron, and copper-aluminum pairs with each plate measurement of 4 cm × 7 cm, thickness of 0.2 mm. To determine the magnitude of the value of the voltage and current, a resistance is given in the form of an LED lamp. Based on the results of the research the pH measurement of the solution was 3.9. The test results obtained by the pair of Cu:Zn plates are the best compared to other pairs of plates, namely by producing a voltage of 1.59 Volts, a current of 0.28 mA, and an strength values of 0.44 mW with a volume of 250 ml. This is due to the influence of the volume of the solution and the electrodes used, that the more plates submerged in the solution, the greater the energy produced.
PENGARUH KOMPOSISI KARBON AKTIF, ZEOLIT, DAN PASIR SILIKA DALAM MENURUNKAN WARNA AIR SUMUR GALI DI DESA SUNGAI SEGAJAH JAYA Abdul Halim Daulay; Masthura Masthura; Jefri Ardiansyah Nasution
JISTech (Journal of Islamic Science and Technology) Vol 6, No 2 (2021)
Publisher : UIN Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/jistech.v6i2.11057

Abstract

Research has been carried out to find out how the quality of dug well water before and after being filtered using activated carbon, zeolite, and silica sand, and to find out how the composition of the mixing of activated carbon, zeolite, and sand is to produce clean water with the most optimum quality for color parameters. based on PERMENKES RI No. 32 of 2017. This study uses dug well water from Sungai Segajah Jaya Village, Kubu District, Rokan Hilir Regency, Riau Province. The composition of activated carbon, zeolite, and silica sand used is 60%:20%:20%, 50%:25%:25%, and 40%:30%:30%. The test results of dug well water samples before applying the filtering method for color. The test results of dug well water samples after applying the filtering method with activated carbon, zeolite, and sand with a composition of 60%:20%:20%, 50%:25%:25%, and 40%:30%:30 %, for the color parameter has met the standard of clean water quality based on PERMENKES RI No. 32 of 2017. From the three variations in the composition of the filter material, the optimum composition of mixing activated carbon, zeolite, and silica sand in the filter was obtained with a composition of 40%:30%:30%. This is shown from the test results data, the results of sample D for color parameters are better according to the maximum limit standard allowed by PERMENKES RI No. 32 of 2017 concerning the requirements for clean water quality, namely 32 TCU.
PENGARUH VARIASI ELEKTRODA DALAM MENURUNKAN KADAR BOD DAN COD LIMBAH CAIR KELAPA SAWIT Masthura Masthura; Abdul Halim Daulay; Irmawati Koto
JISTech (Journal of Islamic Science and Technology) Vol 6, No 1 (2021)
Publisher : UIN Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/jistech.v6i1.10009

Abstract

Research has been carried out which aims to determine the test results of palm oil effluent samples on BOD and COD parameters before and after the electrocoagulation process using Al,Zn, and Fe electrodes. This research uses palm oil effluent from PTPN IV ADOLINA. The results of the BOD test before electrocoagulation were 243 img/l. The results of the BOD test after electrocoagulation with the Al electrode were 100 mg/l, the Zn electrode was i66.8 img/l, and the Fe electrode was 121 mg/l. The test results for COD levels before electrocoagulation were 649 mg/l.The test results for COD levels iafter electrocoagulation with Al electrodes were 350 mg/l, Zn electrodes were 178 mg/l, and Fe electrodes were 315 mg/l. From these electrode variations, ithe best results were obtained for testing the levels of BOD and COD of palm oil liquid waste on the Zn electrode. Key words: Electrode, Electrocoagulation, BOD, COD 
PENGARUH KOMBINASI MEDIA FILTER KARBON AKTIF DENGAN ZEOLIT DALAM MENURUNKAN KADAR LOGAM AIR SUMUR Abdul Halim Daulay; Kartika Manalu; Masthura Masthura
JISTech (Journal of Islamic Science and Technology) Vol 4, No 2 (2019)
Publisher : UIN Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.089 KB) | DOI: 10.30829/jistech.v4i2.6543

Abstract

Telah dilakukan penelitian tentang pengaruh kombinasi media filter karbon aktif dengan zeolit dalam menurunkan kadar logam air sumur. Penelitian ini bertujuan untuk mengetahui komposisi optimum pencampuran karbon aktif dengan zeolite agar diperoleh filter yang dapat menghasilkan air bersih. Rasio karbon aktif dengan zeolit yang digunakan antara lain 25%:75%, 50%:50%, dan 75%:25%. Hasil pengujian menunjukkan bahwa komposisi optimum pencampuran karbon aktif dan zeolit adalah pada rasio karbon aktif 25% dan zeolit 75%. Hal ini ditunjukkan dari data hasil pengujian air untuk parameter logam besi (Fe) yaitu sebesar 0,52 mg/l, logam mangan (Mn) 0,013 mg/l, dan logam timbal (Pb) 0,002 mg/l. Hasil pengujian kadar logam air sumur masih berada pada rentang standar batas maksimum yang diperbolehkan oleh Permenkes RI Nomor 492 Tahun 2010 tentang persyaratan kualitas air minum
ANALYSIS OF THE PHYSICAL PLAFON PLACES BASED PAPER BREEDING Ety Jumiati; Sri Wahyuni Ritonga; Abdul Halim Daulay
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 4, No 1 (2020)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitek.v4i1.7917

Abstract

A pulp-based ceiling board has been made. Variations in the composition of mixing cement and pulp used include: 70%: 30%, 60%: 40%, and 50%: 50%  and Variations in the composition of mixing cement, sand and pulp used include: 50%:20%:30%, 40%:20%:40%, 30%:20%:50% with FAS 0,4 and the printing and pressing time is 24 hours. The parameters of the test include: water absorption and density. Analysis of the ceiling board physical produced in sample A with a composition of 70%: 30% has a water absorption value = 19% and density = 1.58%, in sample B with a composition of 6%: 40% has a water absorption value = 26 , 8% and density = 1.53%, in sample C with a composition of 50%: 50% has a water absorption value = 26.05% and density = 1.45%, in sample D with a composition of 50%:20%:30% has a water absorption value = 24,3% and density = 1.67%, in sample E with a composition of 40%:20%:40% has a water absorption value = 20,9% and density = 1.45%, in sample F with a composition of 30%:20%:50% has a water absorption value = 14,8 % and density = 1.34%.
PHYSICAL PROPERTIES AND MICROSTRUCTURE OF PARTICLE BOARDS BASED ON PALM OIL PALM EMPTY FRUITS AND BAMBOO POWDER WITH A MIXED ADHESIVE OF GAMBIR AND UREA FORMALDEHYDE Nanda Putri Afrilda; Ety Jumiati; Abdul Halim Daulay
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 5, No 1 (2021)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v5i1.9707

Abstract

This test was carried out to reduce waste in coconut empty fruit bunches and to determine the characteristics and microstructure of the particle board surface.  The samples used consisted of bamboo powder and oil palm empty fruit bunches with gambier adhesive and urea formaldehyde with variations including: 10%:75%:15%:11%;  20%:65%:15%:11%, 30%:55%:15%:11%, 40%:45%:10%:11%.  The particleboard was printed and pressurized using a hot press of 16kg/cm2 for 15 minutes at a temperature of 120 oC, with a drying time of 14 days.  The test parameters include: density, moisture content, thickness expansion, and microstructural analysis using SEM (Scanning Electron Microscopy) which refers to SNI 03-2105-2006.  The characterization of particleboard produced in the density test is 0.66-0.74 g/cm3, the water content value is 2.4-6.9%, the thickness expansion value is 7.2-12%.  Based on the percentage value of the density of the resulting particleboard is a medium density particleboard.
Co-Authors Ahmad Nuruddin Aida Febriana Tanjung Anggun Hermi Palupi Arninda Pratiwi asnitha aritonang Aulia Farihanum Aulia Khusnul Arif Z.A Bambang Sunendar Purwasasmita Bharata Dewanto Dickiy Akbar Dita Khairunnisa endang sagita ritonga Ety Jumiati Ety Jumiati Ety Jumiati Haryu Wanda Desgira Heni Puspita Sari Indah Sawitri Irmawati Koto Jefri Ardiansyah Nasution Jeni Dhea Lespita Jumiati, Ety Juwita Juwita Kartika Manalu Lailatul Husna Lubis Lailatul husna lubis Lansari Daulay Laras Ashari Setiawan Leli Mariati Situmorang Lisa Astari Lisa Herdiana Sinurat Masthura, Masthura Miftahul Husnah Minta Ito mira yanti harahap Nadilla Putri Nadjara Yolanda Nanda Putri Afrilda Nazaruddin Nasution Nita Zahara Nasution Nur'aini Fadillah Nurainun Br Pasaribu Nurhayati Nurhayati Nurika Khalila Daulay Nurmaisah Harahap Purnama Indah Lase Putri Dwi Ananda Putri Indah Sari Putri Rabiatul Amalia Sitorus Rahmasari Pohan Ratni Sirait Ratni Sirait Reflina Reflina Ria Muliyana Ridwan Yusuf Lubis Rika Ramtika Rika Safitri Riri Angriani Nasution Sahdinal Adi Sholihatul Hamidah Daulay Siska Siska Siti Hawa Hasibuan Siti Maysarah Siti Rahma Daulay Sri Wahyuni Ritonga Susanto Sigit Rahardi Susi Nurindah Tri Ninda Malika Tunjiah , ufik eliati tumanggor Widya, Eka Zafira Amalia Nasution Zubair Aman Daulay