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PENGARUH HIDROLISIS DAN pH SUBTRAT TERHADAP RENDEMEN DESTILAT HASIL FERMENTASI BUAH SEMU JAMBU METE MENGGUNAKAN RAGI ROTI DAN RAGI TAPE Santiani, Olma; Rahmanpiu, Rahmanpiu; Abraham, Abraham
Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Vol 4, No 3 (2019): Edisi Desember
Publisher : Jurusan Pendidikan Kimia Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (588.097 KB) | DOI: 10.36709/jpkim.v4i3.11742

Abstract

Pengaruh Hidrolisis Dan pH Subtrat Terhadap Rendemen Destilat Hasil Fermentasi Buah Semu Jambu Mete Menggunakan Ragi Roti Dan Ragi Tape”, penelitian ini bertujuan untuk mengetahui Konsentrasi HCl dalam proses hidrolisis dan pH optimum subtrat yang menghasilkan rendemen destilat tertinggi pada fermentasi buah semu jambu mete menggunakan ragi roti dan ragi tape. Metode yang digunakan adalah eksperimen, diawali hidrolisis buah semu jambu mete dengan konsentrasi HCl 0,05N, 0,1N 0,2N dan pH subtrat 4, 5, dan 6, kemudian dilanjutkan dengan fermentasi secara anaerob selama 60 jam menggunakan ragi roti dan ragi tape. Volume destilat hasil fermentasi diukur dan dihitung rendemennya. Hasil penelitian menunjukkan bahwa pada hidrolisis dengan konsentrasi HCl 0.2N dan pH subtrat 5 diperoleh rendemen destilat yang tertinggi baik menggunakan ragi roti (3,92%) maupun ragi tape (3,08%)
PROFIL PENGUASAAN LITERASI SAINS DAN PERSEPSI SISWA MENGGUNAKAN MODEL PEMBELAJARAN PROJECT BASED LEARNING (PjBL) PADA MATERI POKOK REAKSI REDOKS Manginsi, Ranti Sri Juniati; Rafiuddin, Rafiuddin; Abraham, Abraham
Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Vol 4, No 3 (2019): Edisi Desember
Publisher : Jurusan Pendidikan Kimia Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (791.264 KB) | DOI: 10.36709/jpkim.v4i3.11743

Abstract

Penelitian ini bertujuan untuk: (1) Mengetahui karakteristik konsep materi reaksi redoks; (2) Mengetahui profil literasi sains siswa pada materi pokok reaksi redoks; (3) Mengettahui persepsi siswa pada materi pokok reaksi redoks setelah diajarkan dengan model pembelajaran PjBL; (4) Mengetahui apakah terdapat perbedaan penguasaan literasi sains siswa antar kelompok kemampuan yang diajarkan dengan model pembelejaran PjBL pada materi pokok reaksi redoks: (5) Mengetahui apakah terdapat perbedaan persepsi sains siswa antar kelompok kemampuan yang diajarkan dengan model pembelejaran PjBL pada materi pokok reaksi redoks. Berdasarkan hasil analisis ditemukan data: (1) Terdapat 19 label konsep pada materi pokok reaksi redoks, terdiri dari 44,4% yang menyatakan prinsip 44,4% yang menyatakan proses dan 11,1% yang menyatakan sifat dan ukuran atribut; (2) persentase skor posttest tertinggi pada label konsep tata nama senyawa sebesar 30,3% dan persentase skor posstest terendah pada label konsep penentuan oksidator sebesar26,2%; (3) Persentase skor angket tertinggi untuk seluruh kelompok kemampuan sebesar 58%, kelompok kemampuan tinggi 57%, kelompok kemampuan sedang 53% serta kelompok kemampuan rendah 80%. Masing-masing berada pada kategori cukup. Sedangkan presentase terendah sebesar 0% masing-masing berada pada kategori kurang sekali dan sangat baik; (4)Terdapat perbedaan penguasaan literasi sains dengan taraf signifikan 5% antar siswa berkemampuan tinggi dan sedang denganthit 3.887 > ttab 1.70. Serta siswa berkemampuan tinggi dan rendah dengan thit 4.843 > ttab 1,81. Sedangan pada siswa berkemampuan sedang dan rendah tidak berbeda dengan thit  0.603 < ttab 1,72;(5)   Tidak terdapat perbedaan persepsi siswa yang signifikan terkait materi reaksi redoks antara siswa berkemampuan tinggi dan sedang dengan thit-0.507 < ttab 1.70, tinggi dengan rendah  dengan thit-0.693 < ttab 1,81 serta sedang dan rendah dengan thit 0.380 < ttab 1,72
How Sociology Perspective Influence Law with a Social Contexts? A Book Review “Pokok-Pokok Sosiologi Hukum”, Prof Dr Soerjono Soekanto SH MA, Rajawali Pers, 269 Pages, ISBN 979-421-131-1 Abraham, Abraham
Indonesian Journal of Advocacy and Legal Services Vol 3 No 2 (2021): Strengthening Communities Amid Uncertainty: How Does Law Work for Society?
Publisher : Faculty of Law, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijals.v3i2.34788

Abstract

sociology of law examines why humans obey the law and why it fails to obey the law and the social factors that influence it. as a relatively new branch of sociology, the science of legal sociology was developed to explain the interrelationships of patterns of behavior and law that cannot yet be explained by other branches of social science.
How Sociology Perspective Influence Law with a Social Contexts? A Book Review “Pokok-Pokok Sosiologi Hukum”, Prof Dr Soerjono Soekanto SH MA, Rajawali Pers, 269 Pages, ISBN 979-421-131-1 Abraham, Abraham
Indonesian Journal of Advocacy and Legal Services Vol 3 No 2 (2021): Strengthening Communities Amid Uncertainty: How Does Law Work for Society?
Publisher : Faculty of Law, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijals.v3i2.34788

Abstract

sociology of law examines why humans obey the law and why it fails to obey the law and the social factors that influence it. as a relatively new branch of sociology, the science of legal sociology was developed to explain the interrelationships of patterns of behavior and law that cannot yet be explained by other branches of social science.
Factors contributing to insufficient scientific writing skills among junior high school teachers Virman, Virman; Pieter, Jan; G. D. Lasmono, Paulus; Nainggolan, Jonner; Abraham, Abraham
Journal of Educational Management and Instruction (JEMIN) Vol. 4 No. 2 (2024): December 2024
Publisher : UIN Raden Mas Said Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22515/jemin.v4i2.9689

Abstract

For teachers and educators, one self-competency that must be developed is enhancing research and scientific paper dissemination. This study aims to determine the abilities and obstacles experienced by teachers in writing scientific papers. Implementing a sequential research design, this research adopts both quantitative and qualitative analysis.  Twenty-seven teachers contributed as participants and gathered data through questionnaires, which were analyzed quantitatively, and semi-structured interviews which were analyzed qualitatively using thematic analysis. The results showed that SMP Negeri 6 Kota Jayapura teachers still face challenges in writing scientific papers. The scores for each issue are as follows: lack of understanding of publication writing guidelines is the most crucial issue with 24.59%. The second highest issue is the minimal time available to teachers, scoring 19.67%. The third highest issue is low teacher motivation, scoring 11.03%. The fourth highest issues are the lack of information on article writing, the prevalence of scientific paper writing services, and teachers' inability to operate computers, scoring 9.83%. The fifth highest issues are the lack of teacher skills in finding references, non-compliance of teachers' journals with writing guidelines, and limited references needed for writing. In conclusion, the three most dominant factors contributing to insufficient writing ability are the lack of scientific writing knowledge, lack of writing time and administrative demand, and low writing motivation. The research findings offer valuable insight both practically and theoretically. In fostering the related issues, training and ongoing support are crucial for developing and maintaining high standards of scientific writing among educators.
Analisis Model Matematika Penyebaran Penyakit HIV/AIDS dengan Koinfeksi TB Abraham, Abraham; Langowuyo, Agus
SAINTIFIK Vol 10 No 2 (2024): Saintifik: Jurnal Matematika, Sains, dan Pembelajarannya
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/saintifik.v10i2.483

Abstract

Human Immunodificiency Virus (HIV) merupakan virus penyebab penyakit Acquired Immunodeficiency Syndrome (AIDS). Virus ini mengakibatkan turunnya fungsi kekebalan tubuh manusia. Belum ditemukannya obat untuk menyembuhkan penyakit ini mengakibatkan setiap penderita hanya diberikan terapi pengobatan yang bertujuan untuk memperlambat perkembangbiakan virus dalam tubuh penderita. Salah satu cara pengobatan yang dapat dilakukan bagi penderita penyakit HIV/AIDS adalah dengan melakukan terapi pengobatan yang dinamakan sebagai terapi ARV. Terapi ARV dapat membantu memperlambat perkembangan virus yang menyebar di dalam tubuh. Meski belum mampu menyembuhkan secara menyeluruh, namun terapi ARV mampu menurunkan angka kematian, kesakitan, dan meningkatkan kualitas hidup Orang Dengan HIV/AIDS (ODHA). Ada berbagai penyakit yang dapat menyerang penderita HIV, salah satunya adalah Tubercolosis (TB). Oleh karena itu ketika ada TB di daerah endemik HIV maka sangat mungkin terjadi infeksi bersama antara HIV dan TB. Pemodelan matematika merupakan salah satu ilmu terapan dalam bidang matematika yang sering digunakan untuk mencari solusi dalam berbagai kasus pada beberapa bidang ilmu. Dalam penelitian ini akan dibahas kasus adanya infeksi bersama antara HIV/AIDS dengan TB, dengan membentuk model matematika penyebaran penyakit HIV/AIDS dan koinfeksi penyakit TB dan menganalisis titik kestabilitan model dan dampak penyakit TB di daerah endemik HIV. Berdasarkan hasil analisis model yang diperoleh dua titik kesetimbangan yaitu titik kesetimbangan non endemik dan titik kesetimbangan endemik . Titik kesetimbangan non endemik akan stabil secara asimptotik jika ambang batas dan titik kesetimbangan endemik akan cenderung stabil tanpa gejala jika nilai ambang batas .
Preventing Theft in Kemiri Village: Collaboration Between Sectoral Police and Village Government Abraham, Abraham; Agustin, Windi; Arifa, Masyitha Aulia; Sulistianingsih, Dewi
The Indonesian Journal of International Clinical Legal Education Vol 5 No 2 (2023): Legal Education in Current Development: Problems and Challenges
Publisher : Faculty of Law Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijicle.v5i2.63978

Abstract

This study discusses the role of the village government and the role of the surrounding community in implementing an environmental protection system. The purpose of writing this article is to find out data related to security and public order in Kemiri Village. This article is descriptive review supported by qualitative data that aims to reveal the facts or reality of certain social phenomena and provide an objective description of the conditions or problems that may be encountered. Then knowing this, actually, what can the village government do in an effort or at least minimize the crime rate, especially theft in the village of Kemiri? Field data and facts were obtained directly from informants through observation, namely parties who know the information needed regarding environmental safety in the Kemiri Village environment, Kaloran District, Temanggung Regency. As a result authors find out that between the Government, The villagers and The Police cooperate to overcome the situation, but in fact not all problems in society can be solved especially concerning thievery. In conclusion the reason why there is still a crime of theft, especially in the village of Kemiri the security facilities which are inadequate and not as modern as in a big city, also some of villagers careless of their belongings and Lack of police personnel.
Aplikasi Model Logistik Terhadap Pertumbuhan Penyakit HIV/AIDS di Provinsi Papua Abraham, Abraham; Tandiangnga, Tiku
Journal of Health, Education, Economics, Science, and Technology (J-HEST) Vol. 6 No. 2 (2024): Journal of Health, Education, Economics, Science, and Technology
Publisher : Journal of Health, Education, Economics, Science, and Technology (J-HEST)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (259.482 KB) | DOI: 10.36339/

Abstract

Model populasi Verhuslt (logistik) merupakan penyempurnaan dari model populasi Malthus (eksponensial). Model pertumbuhan tersebut disajikan dalam bentuk persamaan diferensial. Penelitian ini bertujuan untuk menerapkan model logistik pada pertumbuhan penyakit HIV/AIDS di Provinsi Papua. Model logistik yang dipengaruhi oleh awal jumlah kasus populasi penyakit HIV/AIDS, laju pertumbuhan kasus HIV/AIDS, dan daya tampung (carrying capacity). Berdasarkan model logistik yang diperoleh semakin lama, jumlah kasus HIV/AIDS semakin meningkat. Daya tampung diperoleh 490.124 jiwa, sedangkan jumlah kasus HIV/AIDS di Provinsi Papua pada tahun 2020 di perkirakan sebesar 55.832 jiwa.
TEACHERS’ STRATEGIES IN TEACHING READING COMPREHENSION TO SEVENTH-GRADE STUDENTS OF SMPN 10 TARAKAN Abraham, Abraham; Fitriawati, Fitriawati; Kusmaryani, Woro
Borneo Journal of English Language Education Vol 5, No 1 (2023)
Publisher : Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/bjele.v5i1.4845

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This research aims to determine the methods for incorporating reading comprehension skills into classroom instruction and identify the specific strategies teachers employ. This study employs a descriptive qualitative approach. The participants of this study were English instructors at SMP Negeri 10 Tarakan, comprising a single teacher. The primary objective of this study is to examine the instructional techniques teachers employ to enhance reading comprehension skills among students in the classroom setting. The research data collection was conducted through documentation, observation, and interviews. Based on the observations and conversations, the instructor employs two specific strategies: scaffolding and QARs (Question-Answer Relationship). 
KONTROL OPTIMAL PADA PEYEBARAN TUBERKULOSIS DENGAN EXOGENOUS REINFECTION Nainggolan, J; Iswar, F J; Abraham, Abraham
JURNAL ILMIAH MATEMATIKA DAN TERAPAN Vol. 16 No. 1 (2019)
Publisher : Program Studi Matematika, Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (545.647 KB) | DOI: 10.22487/2540766X.2019.v16.i1.12762

Abstract

Tuberculosis is a disease caused by Mycobacterium tuberculosis. Tuberculosis can be controlled through treatment, chemoprophylaxis and vaccination. Optimal control of treatment in the exposed compartment can be done in an effort to reduce the number of exposed compartments individual into the active compartment of tuberculosis. Optimal control can be completed by the Pontryagin Maximum Principle Method. Based on numerical simulation results, optimal control of treatment in the exposed compartment can reduce the number of infected compartments individual with active TB.Keywords : Exogenous Reinfection, Optimal Control, Pontryagin's Maximum Principle, Spread Of Tuberculosis.