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All Journal Jurnal Ikatan Alumni Fisika Universitas Negeri Medan Jurnal Pendidikan Fisika Jurnal Hukum tora: Hukum mengatur dan melindungi masyarakat Best Journal (Biology Education, Sains and Technology) Indonesian Science Education Research (ISER) EINSTEIN (E-JOURNAL) INPAFI (Inovasi Pembelajaran Fisika) IPER (Indonesian Physics Education Research) BIO-CONS: Jurnal Biologi dan Konservasi

Nurdin Siregar

Jurusan Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Negeri Medan, Indonesia

Author-ID : 3043963

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Other

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PENGARUH MODEL PEMBELAJARAN BERBASIS MASALAH TERHADAP HASIL BELAJAR SISWA PADA PEMBELAJARAN FISIKA Peranginangin, Gunawan; Siregar, Nurdin
JURNAL IKATAN ALUMNI FISIKA Vol 2, No 4 (2016): Jurnal Ikatan Alumni Fisika Unimed Oktober 2016
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jiaf.v2i4.7780

Penelitian ini bertujuan untuk mengetahui hasil belajar siswa melalui penerapan model pembelajaran berbasis masalahÂ pada materi pokok Besaran dan Satuan. Penelitian ini merupakan quasi eksperimen dengan desain two group pre-test dan pos-test. Populasi penelitian ini adalah siswa kelas X SMA Swasta Santo Yoseph Medan. Teknik yang digunakan dalam pengambilan sampel penelitian adalah cluster random sampling, dengan sampel penelitian 2 kelas yaitu kelas X-I sebagai kelas eksperimen menggunakan model pembelajaran berbasis masalah dan kelas X-4 sebagai kelas kontrol menggunakan pembelajaran konvensional. Instrumen penelitian berupa tes hasil belajar dalam bentuk pilihan ganda sebanyak 20 soal dengan terlebih dahulu divalidasi oleh validator. Hasil analisis data menjelaskan bahwa uji model pembelajaran berbasis masalahÂ lebih berpengaruh meningkatkan kemampuan belajar pemecahan masalah daripada pembelajaran konvensional.

PENGARUH MODEL PEMBELAJARAN BERBASIS MASALAH TERHADAP HASIL BELAJAR SISWA PADA PEMBELAJARAN FISIKA Peranginangin, Gunawan; Siregar, Nurdin
JURNAL IKATAN ALUMNI FISIKA Vol 2, No 4 (2016): Jurnal Ikatan Alumni Fisika Unimed Edisi Oktober - Desember 2016
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jiaf.v2i4.7780

THE EFFECT OF INQUIRY TRAINING ON LEARNING MODEL USING MACROMEDIA FLASH AND CREATIVITY ON STUDENT’S SCIENCE PROCESS SKILLS Santro Nomember Manalu; Prof. Motlan; Nurdin Siregar
Jurnal Pendidikan Fisika Vol 7, No 1 (2018)
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22611/jpf.v7i1.8654

This research aimed to determine whether students on science process skills that were learned by inquiry training model using macromedia flash will be better than conventional learning, to know whether the science process skills of students who have creativity above average was better than students who have creativity below the average, to find whether there was an interaction between instructional inquiry training model used macromedia flash with creativity on students process science skill. This research was quasi experiment research with two group pretest-posttest design. The research population was the whole of the XIth grade of SMA Negeri 4 Medan, 2nd semester of 2016/2017 academic year. The sample of research were taken by cluster random class, consist of 80 students. Class XI-1 was experiment class, consists of 40 students learned by inquiry training on learning model used macromedia flash. Class XI-2 was control class, consists of 40 students taught conventional learning. The instruments consists of two types namely: essay test science process skill consists of 10 questions and essay test of creativity consists of 5 questions. The conclusion are the science process skill of student taught by inquiry training on learning model used macromedia flash was better than conventional learning, the second , the science process skills of students who have creativity above average was not better than students who have below average creativity and the third that there is no interaction between inquiry training model using macromedia flash and conventional learning with creativity in an effort to improve students' science process skills

THE EFFECT OF SCIENTIFIC INQUIRY LEARNING MODEL USING ON STUDENT’S CONCEPT KNOWLEDGE, AND SCIENCE PROCESS SKILLS IN SENIOR HIGH SCHOOL Evy Maria Br Meliala; Eva Marlina Ginting; Nurdin Siregar
Jurnal Pendidikan Fisika Vol 8, No 1 (2019)
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22611/jpf.v8i1.13629

Study aimed to analyze the effect of scientific inquiry learning model on concept knowledge and science process skills in senior high school students. This research is a quasi experimental research with two group pre-test post-test design. The population of this research is all student of class XI MIA SMAN 1 Delitua (Senior High School), semester I academic year 2018/2019. Selection of sample is done by cluster random sampling that is XI MIA-1 as experiment class applied scientific inquiry learning and XI MIA-2 as control class applied conventional learning. Instrument used in this research is instrument of concept knowledge in essay form as much as 10 problem and instrument of science process skills in essay form as much as 10 problem which have been declared valid by expert team. Form the result of the study concluded that the concept knowledge of students applying scientific inquiry model better than the student’s concept knowledge with conventional learning and the science process skills of students applying scientific inquiry learning model is better than student’s science process skill with conventional learning

THE EFFECT OF SCIENCE INQUIRY LEARNING MODEL WITH PICTORIAL RIDDLE METHOD ON STUDENTS SCIENCE PROCESS SKILLS IN ELASTICITY TOPIC SENIOR HIGH SCHOOL PERCUT SEI TUAN CLASS XI ACADEMIC YEAR 2018/2019 Yuni Evany Sinaga; Nurdin Siregar; Disna Margaretha
ISER (Indonesian Science Education Research) Vol 1, No 1 (2019): ISER
Publisher : UNIVERSITAS NEGERI MEDAN

This study aimed to determine the effect of scientific inquiry learning with pictorial riddle method on students' science process skills in the subject elasticity in senior high school Percut Sei Tuan. This research was a quasi-experiment with two group pre-test post-test design. The population in this study were all students of class XI MIA SMA N 2 Percut Sei Tuan consisting of 4 classes totalling 140 students. The study sample consisted of two classes, namely the XI MIA-1 class as the experimental class and the XI MIA-2 class as the control class with 35 and 34 students, respectively. The instrument used was an essay test of science process skills. Based on the data analysis, it was found that there was a significant effect of the scientific inquiry learning with the pictorial piddle method on students' science process skills in the subject elasticity in Senior High School 2 Percut Sei Tuan.Keywords: science process skills, scientific inquiry, elasticity

THE INFLUENCE OF SCIENTIFIC INQUIRY MODEL ON SCIENCE PROCESS SKILLS IN ELASTICITY AND HOOKE LAW LEARNING MATERIAL Herda A. Nainggolan; Nurdin Siregar
ISER (Indonesian Science Education Research) Vol 2, No 1 (2020): ISER
Publisher : UNIVERSITAS NEGERI MEDAN

This study aims to determine the effect of the scientific inquiry model to improve students' science process skills on the subject matter of elasticity and hooke's law. This type of research was a quasi experiment with a control group design pre-test post-test. The population of this study were all Eleven (XI) class Senior High School 18 Medan in 2019/2020 academic years. The research sample was taken by using cluster random sampling technique which took 2 classes from 4 classes, namely class XI MIPA 1 as the experimental class and XI MIPA 4 as the control class with 26 students each. The instrument used was a cognitive question in the form of an essay with 7 questions that had been validated first. Before learning was carried out pretest, based on the results of pretest data processing, the average value of the experimental class was 15.49 and the control class was 12.09. The results of the pretest conducted by hypothesis testing with t-test at a significant level = 0.05, it was found that the initial abilities of the two samples were the same in terms of science process skills. Furthermore, learning was carried out using the scientific inquiry learning model in the experimental class and conventional learning in the control class. After being given a different treatment model, the two classes conducted a postest to see the students' final abilities. The average value of the experimental class was obtained 78.24 and the control class was obtained 69.67. Based on the hypothesis test with the t-test, it was found that there was a significant difference, which means that there was a significant influence from the scientific inquiry model on science process skills accompanied by an assessment of students' science process skills activities.

Penyelesaian Sengketa Para Pihak di Bidang Bisnis melalui Arbitrase Nurdin Siregar; Radisman Saragih
to-ra Vol. 2 No. 1 (2016): April
Publisher : Fakultas Hukum Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/tora.v2i1.1133

Arbitration is a way of solving civil disputes outside the public courts based the arbitration agreement made in writing by the parties to the dispute. The arbitration agreement is an agreement in the form of the arbitration clause contained in a written agreement made by the parties before a dispute arises or a separate arbitration agreement made by the parties after a dispute arises. In everyday life with various activities of members of todayâ€™s society, immense possibility of friction-friction in running business and trade that ended with disputes between members of the public and businesses. In efforts to completion, it would seem that this form of dispute diversity define the core issues then this diversity will be easy settlement with the provisions and rules of law that are sure to be able to look for the solution either arbitration or by mediation, consulting, negotiations, konsialiasi. The arbitration decision will be implemented after the verdict copy officially registered, but the arbitration ruling in accordance with the provisions of the law Arbitration can still be filed annulment if the decision is thought to contain elements, letters or documents are filed in the examination after the verdict recognized dinyataakan counterfeit or fake, after adjudication documents found prescriptive, which is hidden by the other party or the decision taken on the results of a ruse conducted by one of the parties in the dispute. That for legal certainty associated with the judiciary also good for the winning side and the decision is legally binding. Kata Kunci: Penyelesaian sengketa bisnis melalui arbitrase

DYE SENSITIZED SOLAR CELL (DSSC) MENGGUNAKAN FILM TIPIS ZnO DAN EKSTRAK DYE TERUNG BELANDA Motlan Motlan; Novita Pakpahan; Nurdin Siregar
EINSTEIN (e-Journal) Vol 7, No 2 (2019): EINSTEIN (e-Journal)
Publisher : Universitas Negeri Medan

Penelitian ini dilakukan untuk menghasilkan prototype DSSC yang dapat mengkonversi energi cahaya matahari menjadi energi listrik. Penelitian mengenai dye sensitized solar cell (DSSC) dilakukan dengan menggunakan dye dari ekstrak terung belanda, larutan elektrolit mosalyte dan elektroda lawan berupa platina. Elektrode kerja yaitu ZnO yang dideposisikan pada kaca konduktif ITO (Indium Tin Oxide) dan disintetis dengan menggunakan metode sol-gel spin coating. Penyedian Prekursor dari sol ZnO dengan mencampurkan zinc asetat dehidrat, etanol sebagai pelarut, dan dietanolamine (DEA) sebagai stabilizer secara berturut-turut. Film tipis ZnO di post-heating pada suhu 600oC selama 5 jam. Lapisan film tipis ZnO dikarakterisasi dengan menggunakan SEM, XRD, UV-Vis Spektrometer, dan FTIR. Nilai energi gap dari film tipis ZnO dengan suhu post-heating 600oC adalah 3,29 eV. Nilai efisiensi pada suhu post-heating 600oC sebesar 0.054%.Kata Kunci : Film tipis ZnO, Sol-gel, Spin coating, terung belanda, post-heating, Dye Sensitized Solar Cell

Karakterisasi Nano Partikel Zeolit Alam Sebagai Filler Aluminium Dengan Menggunakan Metode Kopresipitasi Dewita AR; Nurdin Siregar
EINSTEIN (e-Journal) Vol 10, No 1 (2022): EINSTEIN (e-Journal)
Publisher : Universitas Negeri Medan

Sintesis dan karakterisasi nano partikel zeolit bertujuan untuk mengetahui hubungan antara variasi suhu pembakaran terhadap struktur morfologi, bentuk kristalnya, fasa yang terbentuk serta kekerasan campuran antara nanozeolit terbaik dengan alumunium. Zeolit kemudian dibakar didalam furnance selama 2 jam dengan suhu divariasikan 3500C, 4500C, 5500C, dan 6500C. Zeolit kemudian dimilling selama 2 jam dengan putaran 400 rpm dan diayak dengan ayakan 200 mesh sehingga menghasilkan powder zeolit. Nano zeolit disintesis menggunakan metode kopresipitasi dengan larutan HCL 1 M dan NaOH 1 M. Sedangkan metode pencampuran nanozeolit dengan aluminium dilakukan metode metalurgi serbuk. Sedangkan metode pencampuran nanozeolit dengan alumunium dilakukan metode metalurgi serbuk. Hasil X-Ray Diffraction (XRD) ke empat sampel memiliki panjang gelombang sebesar 1.540600 Å dengan parameter kisi a dan c. Ukuran partikel pada suhu 3500C sebesar 65,77 nm, pada suhu 4500C sebesar 69,08 nm, dan pada suhu 5500C sebesar 69,08 nm, sedangkan pada suhu 6500C sebesar 53, 32 nm. Dengan persamaan Scherer diperoleh ukuran kristal rata-rata zeolit adalah 74 nm. Dari analisis SEM, diperoleh keempat morfologi nanozeolit menunjukkan butiran yang kurang rapat. Dari hasil pengujian kekerasan alumunium dengan nanozeolit menunjukakan nilai kekerasan maksimum 81,6 kgf/mm.

PENGARUH WAKTU TAHAN KALSINASI FILM TIPIS ZNO TERHADAP EFISIENSI DSSC (DYE SENSITIZIED SOLAR CELL) YANG MENGGUNAKAN DYE DARI BUAH NAGA MERAH Sri Karina Pinem; Nurdin Siregar
EINSTEIN (e-Journal) Vol 5, No 3 (2017): EINSTEIN
Publisher : Universitas Negeri Medan

Salah satu energi alternatif yang mempunyai potensi sumber energi yang sangat besar untuk mencegah terjadinya krisis energi namun sering kali terabaikan adalah sinar matahari. Oleh karena itu, penelitian ini dilakukan untuk menghasilkan prototype dalam mengkonversi energi cahaya matahari menjadi energi listrik. Penelitian mengenai dye sensitized solar cell dilakukan dengan dye dari ekstrak buah naga merah sebagai sumber energi alternatif dari tenaga surya. Dye sensitized solar cell (DSSC) dibuat dengan menggunakan semikonduktor ZnO yang dilapiskan pada kaca konduktif Fluorine Doped Tin Oxide (FTO) dan dikalsinasi dengan variasi waktu tahan 15 menit, 30 menit dan 45 menit dengan temperatur tetap yaitu 550°C. Lapisan ZnO pada substrat dikarakterisasi dengan menggunakan SEM dan XRD. Densitas arus dan voltase maksimum diperoleh pada variasi waktu tahan 30 menit dengan temperatur 550°C yaitu sebesar 0,611 mA/cm2 dan 1114 mV. Efisiensi maksimum yang diperoleh sebesar 0,146%.Kata Kunci : Dye Sensitized Solar Cell, Temperatur Kalsinasi, Waktu Tahan Kalsinasi, Buah Naga Merah, Zn

Co-Authors Agustina Butar-butar Alfandi Gulo Anna Aria Ningsih Harahap Dede Aria Ningsih Harahap Dewi Feronika Manullang Dewita AR Diego Ferdinand Disna Margaretha Erniria Erniria Eva Marlina Ginting Evy Maria Br Meliala Fauzi Girsang Fernando Lumban Batu Gulo, Puji Kasih Laurensia Gusrianta Gusrianta Harahap, Anna Aria Ningsih Harahap, Dede Aria Ningsih Herda A. Nainggolan Iramaya Fridayanti Sinaga Manullang, Dewi Feronika Motlan . Motlan Motlan Nadhilla, Annisa Novita Pakpahan Nurhabibah Purba Nurliana Marpaung Pangihutan Gultom Peranginangin, Gunawan Pinem, Sri Karina Purba, Nurhabibah Radisman Saragih Rahmatsyah Rotua Fetricia Silitonga Saanatun . Sabarina Sabarina Salomo Leonardus Simanjuntak Santro Nomember Manalu Siagian, Maria Agnes Simanjutak, Mariati Purnama Sri Karina Pinem Teti Dian Sari Thesa Irene Sari S Tjiufen Viin M Manurung . Wahyudi, Arya Yohana Chintya Siregar Yuni Evany Sinaga

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