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Studi Stabilitas Warna Biodiesel Dan Campuran Biodiesel - Minyak Solar (B20) Selama Penyimpanan Alfid Revtan Effriandi; Siti Zahra; Leily Nurul Komariah
Jurnal Teknik Kimia Vol 25 No 3 (2019): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Tujuan dari penelitian ini adalah untuk mengetahui analisa sampel biodiesel B20 dan B100 yaitu berupa analisa angka asam, angka peroksida dan analisa warna dengan menggunakan colorimeter. B100 berbasis palm oil berasal dari PT Sumi Asih Oleochemical dan B20 berasal SPBU Pertamina. Analisa warna, angka asam dan angka peroksida dilakukan per 15 Hari sampai hari ke 60 untuk dilihat apakah ada perubahan yang terjadi. Biodiesel disimpan dengan diberi penambahan antioksidan dan tanpa penambahan antioksidan. Hal ini untuk mengamati efek penambahan antioksidan pada biodiesel selama penyimpanan. Antioksidan yang digunakan adalah Tersier Butil Hidroksi Quinolin (TBHQ) yang berfungsi untuk memperlambat atau mencegah proses oksidasi. Penyimpana biodiesel disimpan dengan dua kondisi yaitu tempat tertutup dan terbuka untuk diamati perubahan yang terjadi. Hasil penelitian ini menunjukkan bahwa penambahan antioksidan di ruangan terbuka berpengaruh terhadap perubahan warna yang signifikan hal ini disebabkan karena antioksidan bekerja pada temperatur tinggi selama penyimpanan. Kondisi penyimpanan pada temperatur diatas temperatur ambient dan terkena cahaya matahari lebih mempercepat terjadinya degradasi menyebabkan terjadinya penurunan kualitas biodiesel.
Avoiding Despicable Morals, namely Miserliness and Hypocrisy Through the Story of Tsa'labah Ibn Hatib Al-Ansari Maimunah Munthe; Siti Ardianti; Siti Zahra
MAQOLAT: Journal of Islamic Studies Vol. 1 No. 3 (2023): Transformative Islamic Thought Based on the Qur'an
Publisher : Perkumpulan Dosen Fakultas Agama Islam Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58355/maqolat.v1i3.16

Abstract

A popular story spread in Islamic society about Tsa'labah ibn Hatib, a companion of the prophet who became miserly and hypocritical when His prayer was granted by Allah Almighty. Tsa'labah was one of the companions of the prophet who was initially very devoted to the Commandments of Allah Almighty and diligent in worshiping to the mosque when he was still poor, while the purpose of this study was to find out what despicable traits or morals existed in Tsa'labah so that he was said to be a person who Damnated by Allah Almighty, This research is a literature study research, namely research by reviewing and examining sources that are relevant to the research being carried out which is taken from several books and journals that are relevant to the title that the researcher wrote and raised to be researched, The results of this study are a form of presentation of researchers about avoiding despicable morals, namely miserliness and hypocrisy through the example of the story of Tsa'labah where in this story Tsa'labah shows that he was one of the companions of the Prophet who was originally devoted to Allah Almighty but because he was kufr not grateful for the blessings given by Allah made him forget to carry out the command of Allah Almighty, namely zakat, as for the despicable nature or morals in Tsa'labah that we should avoid is miserly, kufr delicious, arrogant, greedy, and break promises.
Penerapan Model Think Talk Write untuk Meningkatkan Hasil Belajar Matematika Siswa SD Siti Zahra; Prissy Patrisia Gurning; Mutiara Lestari Aritonang; Alfred Kristian Gulo; Taruli Marito Silalahi
Lencana: Jurnal Inovasi Ilmu Pendidikan Vol. 3 No. 1 (2025): Januari : Jurnal Inovasi Ilmu Pendidikan
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/lencana.v3i1.4574

Abstract

The purpose of this article review is to evaluate the effectiveness of using Think Talk Write (TTW) learning modeling to improve elementary school students' mathematics learning outcomes. The TTW model involves a structured process of thinking, speaking, and writing to help students understand mathematical concepts better. The study method used is library research, where the data sources obtained are reviewed through books, scientific articles, scientific journals and other relevant written information. Data collection techniques are carried out through library research, focusing on literature related to the application of the TTW model in mathematics learning. The data obtained are analyzed using descriptive methods, which include tracing, reviewing and verifying in order to determine conclusions. The study data produced shows that the application of the TTW model can improve students' understanding and mathematical skills, and provide a clear picture of the effectiveness of this model in the context of mathematics education in elementary schools.
Analisis Biaya Operasional UMKM Doyan Jagung Mozarella Padang Menggunakan Metode Activity Based Costing (ABC) Siti Zahra; Weni Sukriana; Dodi Suryadi
Gudang Jurnal Multidisiplin Ilmu Vol. 2 No. 12 (2024): GJMI - DESEMBER
Publisher : PT. Gudang Pustaka Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59435/gjmi.v2i12.1235

Abstract

UMKM (Usaha Mikro Kecil dan Menengah) memiliki peran vital dalam perekonomian Indonesia, berkontribusi signifikan terhadap penciptaan lapangan kerja dan pertumbuhan ekonomi. Doyan Jagung Mozarella merupakan bagian dari sektor kuliner atau industri makanan dan minuman, tidak terkecuali dari tantangan ini. Lebih spesifik, ia termasuk dalam kategori makanan ringan atau street food. Activity-Based Costing (ABC) adalah sistem biaya yang disempurnakan, memungkinkan pengklasifikasian lebih banyak biaya sebagai biaya langsung, mengurangi jumlah biaya tidak langsung, dan mengidentifikasi pemicu biaya. Penelitian ini menggunakan data primer dengan objek, yaitu UMKM Doyan Jagung Mozarela Padang. Data primer diambil pada pengabdian masyarakat ini menggunakan pendekatan wawancara. Kesimpulan dari analisis biaya operasional UMKM Doyan Jagung Mozarella Padang menggunakan metode Activity Based Costing (ABC) menunjukkan bahwa penerapan metode ini memberikan manfaat signifikan dalam perhitungan biaya. Dengan ABC, UMKM dapat mengidentifikasi dan mengelompokkan aktivitas yang terlibat dalam produksi secara lebih rinci, sehingga memungkinkan pengalokasian biaya yang lebih akurat berdasarkan penggunaan sumber daya.
Transformasi Digital Peradilan Solusi Fenomena “No Viral No Justice” Nabilla Syifa Auliya; Fadlah Nur; Siti Zahra
Proceeding of the International Conference on Global Education and Learning Vol. 2 No. 1 (2025): June : Proceeding of the International Conference on Global Education and Learn
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/icgel.v2i1.138

Abstract

The hastag No. viral No. justice has recently emerged on social media platforms creating its own discourse in the justice system. This research aims to examine how the impact of this phenomenon on the judicial system and to find the ideal mechanism of digital transformation of justice so that this phenomenon remains in line with the principle of due process of law.This research method uses a social legal with a case study approach and conceptual approach in answering the problem formulation. This research found that this phenomenon is motivated by the slow response of law enforcement officials and the lack of transparency of the judicial system, then the impact of this phenomenon disrupts the independence of the judiciary because it is tried by the media and has the potential to accommodate the spread of hoaxes and public disinformation. To answer these challenges, the author proposes a digital transformation of the judiciary through the optimization of SIPP, by adding a verification link feature on the SIPP page. So that access to case tracking becomes more transparent. In addition, there are also new rules regarding the publication of unresolved legal cases on social media by requiring the admin and related accounts to provide a disclaimer and link to the SIPP verification link of the case. This regulation is regulated through the revision of the ITE Law by the legislators.
Menakar Ulang Kedudukan TAP MPR dalam Konstelasi Peraturan Perundang Undangan Pasca Amandemen Nur, Fadlah; Nabilla Syifa Auliya; Siti Zahra
Jurnal Restorasi Hukum Vol. 8 No. 1 (2025): Jurnal Restorasi Hukum
Publisher : UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/mtj7m772

Abstract

The amendment of the Constitution does not only change the authority and position of the MPR in the constitutional system but also has an impact on its legal products. The placement of MPR Decree in the hierarchy of laws and regulations raises norm conflicts that lead to legal uncertainty, this research aims to examine how the ideal position of MPR Decree in the hierarchy of laws and regulations. This research uses normative juridical method with conceptual approach and statute approach. The results of the study found that there are several norm conflicts due to the inclusion of TAP MPR in the hierarchy, namely the issue of content material, the role of the consideration, the status of validity and constitutional testing which causes legal uncertaint. The author offers two alternative recommendation to the legislators. First, it is necessary to reassess to determine which provisions are still relevant to be maintained, so that a definite number is agreed upon. Then the content material is moved into the law. So that all MPR Decrees can still be used in the form of laws. Then revise the hierarchy of laws and regulations. Secondly, the lawmakers can just leave the MPR Decrees that are still recognised as MPR Decrees, with the legal status of laws and regulations. Whatever the lawmakers' choice, the MPR Decree must be removed from the hierarchy. Amandemen Undang Undang Dasar  tidak hanya mengubah wewenang dan kedudukan MPR dalam sistem ketatanegaraan namun juga berimbas pada produk hukum nya. Penempatan TAP MPR dalam hierarki peraturan perundang undangan menimbulkan konflik norma yang berujung pada ketidakpastian hukum, penelitian ini bertujuan untuk mengkaji bagaimana idealnya kedudukan TAP MPR dalam hirrarki  peraturan perundang undangan. Penelitian ini menggunakan  metode yuridis normatif dengan pendekatan konseptual. Pengumpulan data yang digunakan dalam penelitian ini menggunakan kajian literatur . hasil penelitian menemukan terdapat beberapa konflik norma karena masuknya TAP MPR dalam hierarki yaitu masalah materi muatan, peran konsideran, status keberlakuan dan pengujian konstitusional yang menimbulkan ketidakpastian hukum sehingga TAP MPR harus dikeluarkan dari hierarki melalui revisi UU no.12/2011
The Role of the Taqwa Mosque Community Service in Improving the Welfare of the Medan Community Maimunah Munthe; Arlina; Siti Zahra; Jahrona Harahap; Syahru Romadhan
al-Afkar, Journal For Islamic Studies Vol. 8 No. 3 (2025)
Publisher : Perkumpulan Dosen Fakultas Agama Islam Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/afkarjournal.v8i3.1499

Abstract

Community welfare is a condition for the fulfillment of the material, spiritual, and social needs of citizens in order to be able to live a decent life and be able to develop themselves, so that they can carry out their social functions, as one of the supports that are expected to be able to provide welfare to the community includes mosques, where mosques play another equally important role in contributing to the improvement of the community's economic situation and also coaching about about faith and also morals in society. The purpose of writing this journal is to study more deeply about how the efforts made by the BKM of the Taqwa Mosque in overcoming this problem include the Role of the BKM of the Taqwa Mosque in the Welfare of the People of Medan. The research method used is qualitative using a phenomenological approach, then the data collection techniques in this study are observation, interviews and documentation and the analysis techniques used are data reduction, data presentation, and conclusion drawn/verification. The results of the research found by the researcher are that there are several activities carried out by BKM Masjid Taqwa to support welfare for the community, including providing religious education, social and community programs, social assistance, economic empowerment, cleanliness and welfare, and environmental cleanliness, then the problems experienced by BKM Mosque in implementing all programs include missed communication and lack of funds and lack of facilities or infrastructure of the Mosque.