Items where Author is "Siregar, Nurdin"

Sirait, Makmur and Sinulingga, Karya and Siregar, Nurdin and Doloksaribu, Maryati Evivani and Amelia (2022) CHARACTERIZATION OF HYDROXYAPATITE BY CYTOTOXICITY TEST AND BENDING TEST. In: The 3rd International Conference on Sciences and Technology Applications (ICOSTA) 2021, Medan, 2 Nov 2021.

Purba, Frikson Jony and Tarigan, Krista and Sitorus, Zuriah and Siregar, Nurdin and Frida, Erna and Bukit, Nurdin and Simbolon, Holden (2022) Cu2O/ZnO NANOCOMPOSITE AND GRAPHENE OXIDE WITH PHOTOCATALYSIS FOR TEXTILE DYES/DYE REDUCTION. Tianjin Daxue Xuebao, 55 (02). pp. 388-398. ISSN 0493-2132

Dewita AR and Siregar, Nurdin (2022) KARAKTERISASI NANO PARTIKEL ZEOLIT ALAM SEBAGAI FILLER ALUMINIUM DENGAN MENGGUNAKAN METODE KOPRESIPITASI. Jurnal Einstein, 10 (01). pp. 54-58. ISSN 2338-1981

Silitonga, Rotua Fetricia and Siregar, Nurdin (2022) PENGARUH SUHU PRE-HEATING TERHADAP MIKROSTRUKTUR DAN SIFAT OPTIK FILM TIPIS ZnO DENGAN METODE SOL-GEL SPIN COATING. Jurnal Einstein, 10 (01). pp. 1-9. ISSN 2338-1981

Siregar, Nurdin and Sirait, Makmur and Motlan (2022) SYNTHESIS AND OPTICAL PROPERTIES OF Sb-DOPED ZnO THIN FILM BY SOL-GEL SPIN COATING METHOD. In: The 3rd International Conference on Sciences and Technology Applications (ICOSTA) 2021, Medan, 2 Nov 2021.

Siregar, Nurdin and Irfandi and Tanjung, Yul Ida and Mihardi, Satria (2021) Dampak Pelatihan Media Praktikum Fisik Pada Kelompok Guru SMA Dalam Program Sekolah Binaan. Prosiding Seminar Nasional Hasil Pengabdian Masyarakat: Kontribusi Perguruan Tinggi Dalam Pemberdayaan Masyarakat Di Masa Pandemi. pp. 104-107. ISSN 978-602-50131-7-1

Sinulingga, Karya and Sirait, Makmur and Siregar, Nurdin and Doloksaribu, Maryati Evivani (2021) INVESTIGATION OF ANTIBACTERIAL ACTIVITY AND CELL VIABILITY OF Ag/Mg AND Ag/Zn Co-DOPED HYDROXYAPATITE DERIVED FROM NATURAL LIMESTONE. ACS Omega, 06 (49). pp. 34185-34191. ISSN 2470-1343

Erniria and Motlan and Siregar, Nurdin (2021) DYE SENSITIZED SOLAR CELL (DSSC) MENGGUNAKAN FILM TIPIS ZnO Cu DENGAN VARIASI KECEPATAN PUTARAN BERBAHAN DYE BUAH KARAMUNTING. Jurnal Einstein, 09 (01). pp. 33-39. ISSN 2338-1981

Motlan and Ferdinand, Diego and Siregar, Nurdin (2021) DYE SENSITIZED SOLAR CELL (DSSC) MENGGUNAKAN FILM TIPIS ZnO:Mg DENGAN DYE EKSTRAK KULIT MANGGIS. Jurnal Einstein, 09 (02). pp. 51-55. ISSN 2338-1981

Siregar, Nurdin and Motlan and Panggabean, Jonny Haratua (2021) EFFECT OF POST-HEATING TEMPERATURE ON EFFICIENCY OF DYE-SENSITIZED SOLAR CELL WITH ZnO : AL THIN FILMS PREPARED BY SOL-GEL SPIN COATING. Journal of Physical Science, 32 (02). pp. 57-70. ISSN 2180-4230

Motlan and Siregar, Nurdin and Panggabean, Jonny Haratua (2021) THE EFFECT OF SPIN COATING SPEED ON STRUCTURAL AND OPTIVAL PROPERTIES OF ZnO AND ZnO/DYE FILMS SYNTHESIZED BY SOL-GEL SPIN COATING METHOD. In: The 7th Annual International Seminar on Trends in Science and Science Education (AISTSSE) 2020, 17 Nov 2020, Medan.

Motlan and Siregar, Nurdin (2021) THE EFFICIENCY OF NATURAL DYES-BASED DYE SENSITIZED SOLAR CELLS. Journal of Physical Science, 31 (01). pp. 57-68. ISSN 2180-4230

Siregar, Nurdin and Motlan and Panggabean, Jonny Haratua and Sirait, Makmur and Rajagukguk, Juniastel and Gultom, Noto Susanto and Sabir, Fedlu Kedir (2021) FABRICATION OF DYE-SENSITIZED SOLAR CELLS (DSSC) USING Mg-Doped ZnO AS PHOTOANODE AND EXTRACT OF ROSE MYRTLE (Rhodomyrtus tomentosa) AS NATURAL DYE. International Journal of Photoenergy, 2021. pp. 1-7. ISSN 1110-662X

Gulo, Alfandi and Siregar, Nurdin (2021) PENGARUH KECEPATAN PUTARAN TERHADAP STRUKTUR DAN MORFOLOGI FILM TIPIS ZnO DENGAN MENGGUNAKAN METODE SOL-GEL SPIN COATING. Jurnal Einstein, 09 (02). pp. 34-38. ISSN 2338-1981

Siregar, Nurdin and Motlan (2021) PENGARUH KECEPATAN PUTARAN TERHADAP STRUKTUR DAN SIFAT OPTIK FILM TIPIS ZnO DENGAN METODE SOL-GEL SPIN COATING. Jurnal Einstein, 09 (02). pp. 1-6. ISSN 2338-1981

Sinulingga, Karya and Sirait, Makmur and Siregar, Nurdin and Abdullah, Hairus (2021) SYNTHESIS AND CHARACTERIZATIONS OF NATURAL LIMESTONE-DERIVED NANO HYDROXYAPATITE (HAp): A COMPARISON STUDY OF DIFFERENT METALS DOPED HAps ON ANTIBACTERIAL ACTIVITY. RSC Advances, 11. pp. 15986-15904. ISSN 2046-2069

Sirait, Makmur and Sinulingga, Karya and Siregar, Nurdin and FITRI, DEWI and Padang, Samuel T.W. (2021) THERMAL AND MECHANICAL PROPERTIES A MEMBRANE OF THE MIXING PVA NANOCOMPOSITE AND LIMESTONE HYDROXYAPATITE. In: The 2nd International Conference on Sciences and Technology Applications (ICOSTA) 2020, 3 Nov 2020, Medan.

Simanjuntak, Mariati Purnama and Marpaung, N and Sinaga, L. and Siregar, Nurdin (2020) The Effect of Problem Based Learning Based on Multiple Representations to the Students' Science Conceptual Understanding. In: The 7th Annual International Seminar on Trends in Science and Science Education (AISTSSE) 2020, 17 Nov 2020, Medan.

Simanjuntak, Mariati Purnama and Marpaung, Nurliana and Siregar, Nurdin (2020) DESAIN PEMBELAJARAN IPA BERBASIS MASALAH DAN MULTIREPRESENTASI TERHADAP PEMAHAMAN KONSEP DAN PEMECAHAN MASALAH. Jurnal Inovasi Pembelajaran Fisika (INPAFI), 8 (4). pp. 20-25. ISSN 2337-4624

Siregar, Nurdin and Motlan and Panggabean, Jonny (2020) THE EFFECT MAGNESIUM (Mg) ON STRUCTURAL AND OPTICAL PROPERTIES OF ZnO:Mg THIN FILM BY SOL-GEL SPIN COATING METHOD. In: The 4th International Conference on Applied Physics and Materials Application, 18-20 Sept 2019, Sumatera Utara.

Motlan and Siregar, Nurdin and Panggabean, Jonny (2020) THE EFFECT OF POST ANNEALING TIME ON STRUCTURAL AND OPTICAL PROPERTIES OF ZnO THIN FILMS BY SOL-GEL SPIN COATING METHOD. In: The 4th International Conference on Applied Physics and Materials Application, 18-20 Sept 2019, Sumatera Utara.

Sirait, Makmur and Sinulingga, Karya and Siregar, Nurdin and Damanik, Fitriani (2020) SYNTHESIS AND CHARACTERIZATION OF HYDROXYAPATITE FROM BROILER EGGSHELL. In: The 1st International Conference on Physics and Applied Physics 2019, 12-13 Sept 2019, Medan.

Sirait, Makmur and Sinulingga, Karya and Siregar, Nurdin and Siregar, R. S. D (2020) SYNTHESIS OF HYDROXYAPATITE FROM LIMESTONE BY USING PRECIPITATION METHOD. In: The 6th Annual International Seminar on Trends in Science and Science Education, 16-17 October 2019, North Sumatera Province, Indonesia.

Raufa, Safitri and Siregar, Nurdin and Derlina (2019) The Effect of Cooperative Learning Model Based on Aceh Culture to Improve the Generic Science Skills of Student. In: Proceedings of The 4th Annual International Seminar on Transformative Education and Educational Leadership (AISTEEL), 23 – 24 September 2019, Garuda Plaza Hotel, Medan,.

Lembaga Penelitian Universitas Negeri Medan (2019) METODE PEMBUATAN NANOKOMPOSIT DARI MODIFIKASI POLIVINIL ALKOHOL DAN ZEOLIT ALAM. IDP000058819.

Siregar, Nurdin and Purba, Nurhabibah and Motlan (2019) DYE SENSITIZED SOLAR CELL (DSSC) MENGGUNAKAN FILM TIPIS ZNO:B DAN EKSTRAK DYE DARI UBI UNGU. Jurnal Einstein, 07 (01). pp. 5-9. ISSN 2338-1981

Motlan and Novita and Siregar, Nurdin (2019) DYE SENSITIZED SOLAR CELL (DSSC) MENGGUNAKAN FILM TIPIS ZnO DAN EKSTRAK DYE TERUNG BELANDA. Jurnal Einstein, 07 (02). pp. 18-22. ISSN 2338-1981

Motlan and Lelyana and Siregar, Nurdin (2019) DYE SENSITIZED SOLAR CELL (DSSC) MENGGUNAKAN FILM TIPIS ZnO DENGAN VARIASI KECEPATAN PUTARAN BERBAHAN DYE BUNGA KEMBANG SEPATU. Jurnal Einstein, 07 (02). pp. 13-17. ISSN 2338-1981

Siregar, Nurdin and Gultom, Pangihutan and Motlan (2019) DYE SENSITIZED SOLAR CELL (DSSC) MENGGUNAKAN FILM TIPIS ZnO:AL BERBASIS DYE DARI BUAH NAGA MERAH. Jurnal Einstein, 07 (02). pp. 23-27. ISSN 2338-1981

Sirait, Makmur and Gea, Saharman and Bukit, Nurdin and Siregar, Nurdin and Sitorus, Ceria (2018) SYNTHESIS OF NANOBENTONITE AS HEAVY METAL ADSORBENT WITH VARIOUS SOLVENTS. Oriental Journal of Chemistry, 34 (4). pp. 1854-1857. ISSN 0970-020 X

Motlan and Siregar, Nurdin (2018) THE EFFECT OF POST-HEATING TEMPERATURE ON OF THE EFICENCY OF DYE SENSITIZED SOLAR CELL (DSSC) WITH USING ZnO THIN FILM AND DYE FROM DUTCH EGGPLANT FRUIT (Solanum betaceum). In: The 8th International Conference on Theoretical and Applied Physics, 20-21 Sept 2018, Medan.

Motlan and Siregar, Nurdin (2018) THE EFFECT OF POST-HEATING TIME OF ZnO THIN FILM ON THE EFFICIENCY OF ZnO/Hylocereus polyrhizus DSSC. Edelweiss Applied Science and Technology, 03 (01). pp. 70-74. ISSN 2576-8484

Siregar, Nurdin and Motlan (2018) THE EFFECT OF PRE-HEATING TEMPERATURE ON STRUCTURAL AND OPTICAL PROPERTIES ZnO THIN FILM SYNTHESIZED USIN SOL-GEL SPIN COATING METHOD. In: The 8th International Conference on Theoretical and Applied Physics, 20-21 Sept 2018, Medan.

Manullang, Dewi Feronika and Siregar, Nurdin (2018) IDENTIFIKASI KEJERNIHAN AIR SUMUR BOR DITINJAU DARI DAYA HANTAR LISTRIK (DHL) DENGAN KONDUKTIVITIMETER DI DESA SENTANG KECAMATAN TELUK MENGKUDU KABUPATEN SERDANG BEDAGAI. Jurnal Einstein, 06 (02). pp. 14-20. ISSN 2338-1981

Sirait, Makmur and Bukit, Nurdin and Siregar, Nurdin (2017) PREPARATION AND CHARACTERIZATION OF NATURAL BENTONITE IN TO NANOPARTICLES BY "CO-PRECIPITATION METHOD". In: The 6th International Conference on Theoretical and Applied Physics (ICTAP), 19-21 Sept 2016, Makassar.

MANALU, SANTRO NOMEMBER and Motlan and Siregar, Nurdin (2017) THE EFFECT OF INQUIRY TRAINNG ON LEARNING MODEL USING MACROMEDIA FLASH AND CREATIVITY ON STUDENT'S SCIENCE PROCESS SKILLS. Journal of Education and Practice, 08 (34). pp. 15-21. ISSN 2222-1735

Siregar, Nurdin and Motlan and Zega, Fatmawati (2016) PENGARUH SUHU POST-HEATING TERHADAP STRUKTUR DAN SIFAT OPTIK FILM TIPIS ZnO YANG DISINTESIS DENGAN METODE SOL-GEL SPIN COATING. In: Seminar Nasional Hilirisasi Penelitian 2016, 21 Dec 2016, Medan.

Harahap, Dede Aria Ningsih and Siregar, Nurdin (2016) PENGARUH INTRUSI AIR LAUT DAN KANDUNGAN AIR SUMUR BOR DENGAN KONDUKTIVITIMETER DI DESA PASAR BARU KECAMATAN TELUK MENGKUDU KABUPATEN SERDANG BEDAGAI. Jurnal Einstein, 04 (01). pp. 7-14. ISSN 2338-1981

Siregar, Nurdin and Marlianto, Eddy and Gea, Saharman and Motlan (2015) THE EFFECT OF CONCENTRATION OF STRUCTURE AND OPTICAL PROPERTIES OF THIN FILMS SYNTHESIZED BY SOL-GEL METHODS SPIN COATING. International Journal of Sciences : Basic and Applied Research (IJSBAR), 22 (01). pp. 428-434. ISSN 2307-4531

Siregar, Nurdin (2015) STUDI SINTESIS DAN KARAKTERISTIK FILM TIPIS ZnO DENGAN METODE SOL-GEL SPIN COATING. Doctoral thesis, USU.

Siregar, Nurdin and Marlianto, Eddy and Gea, Saharman and Taufiqu, Nurul (2014) INFLUENCE OF CONCENTRATION AND POST-HEATING TO THE CRYSTAL SIZE AND OPTICAL PROPERTIES OF ZnO THIN FILMS. In: The First Annual International Seminar on Trends in Science and Science Education 2014, 5-6 Dec 2014, Medan.

Simanjuntak, Sartika Dewi Oktavia and Siregar, Nurdin (2014) ANALISIS JENIS MATERIAL BAWAH PERMUKAAN TANAH DENGAN METODE GEOLISTRIK DI SEKITAR PEMANDIAN LAU SIBAYAK DESA MARDINDING JULU. In: Seminar Nasional Inovasi dan Teknologi Informasi (SNITI) 2014, 10-11 Oct 2014, Tuktuk Siadong, Samosir.

Siregar, Nurdin and Marlianto, Eddy and Gea, Saharman and Taufiqu, Nurul (2014) PENGARUH KECEPATAN PUTARAN DAN POST-HEATING TERHADAP UKURAN KRISTAL NANOPARTIKEL FILM TIPIS ZnO. In: Seminar Nasional Kimia 2014, 20 May 2014, Medan.

Purba, Andreas and Siregar, Nurdin (2014) SINTESIS DAN SIFAT OPTIK FILM TIPIS ZnO DENGAN METODE SOL-GEL SPINCOATING. In: Seminar Nasional Inovasi dan Teknologi Informasi (SNITI) 2014, 10-11 Oct 2014, Tuktuk Siadong, Samosir.

Siregar, Nurdin and Sipayung, Jefri Ornando (2012) PEMBUATAN DAN KARAKTERISASI NANOPARTIKEL ZnO DENGAN METODE SOLGEL BERDASARKAN VARIASI pH. In: Seminar & Rapat Tahunan BKS-PTN B MIPA tahun 2012, 11-12 May 2012, Medan.

Motlan and Siregar, Nurdin (2009) THE EFFECT OF SPINNING VELOCITY ON STRUCTURAL AND OPTICAL PROPERTIES ZnO THIN FILM SYNTHESIZED USING SOL-GEL SPIN COATING METHOD. In: International Conference on Innovation in Education, Science and Culture (ICIESC-2017), 8-9 Nov 2017, Medan.

Siregar, Nurdin (2009) UPAYA MENINGKATKAN HASIL BELAJAR MAHASISWA PADA MATA KULIAH FISIKA MATEMATIKA I DENGAN MEDIA HANDOUT. In: Seminar Nasional Optimalisasi Penggunaan Media Pendidikan dalam Pembelajaran, 23 May 2009, Medan.

Siregar, Nurdin (1997) ANALISIS DEFLEKSI PELAT DENGAN METODA VARASIONAL. Jurnal Pendidikan Science (04). pp. 34-43. ISSN 0853-3792

Siregar, Nurdin and Rajagukguk, Juniastel and Sirait, Alamin (2011) PEMANFAATAN ASAM BELIMBING SEBAGAI PENGGUMPAL LATEKS. Project Report. FMIPA Unimed, Medan.