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SANI SANI
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Synthesis of Aragonite Polymorphs from Five Types of Sea Shells by Carbonation Method Hadi, Prasetyo; Hidayah, Wahyu; Sani, Sani; Muljani, Srie
G-Tech: Jurnal Teknologi Terapan Vol 9 No 3 (2025): G-Tech, Vol. 9 No. 3 July 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i3.6998

Abstract

Shell waste accumulates along the coastal areas of Surabaya and Sidoarjo, with various types of shells including blood shells, green shells, feather shells, kampak shells, and batik shells. Currently, the waste from these shells is not being utilized optimally. Marine shell waste contains more than 95% calcium carbonate (CaCO3), making it suitable for the production of aragonite crystals, which can serve as raw materials for applications such as bone regeneration, paper manufacturing, and as fillers in rubber and plastics. The objective of this research is to synthesize aragonite from five types of marine shells and to investigate the effect of carbonation temperature on the percentage of aragonite formation. The method employed for synthesizing aragonite crystals is carbonation. Initially, the CaCO3 derived from marine shells is calcined at 900°C to produce calcium oxide (CaO). This calcium oxide is then dissolved in hydrochloric acid (HCl) to form calcium chloride (CaCl2). Subsequently, sodium hydroxide (NaOH) is added to CaCl2, and carbon dioxide (CO2) gas is bubbled through the solution to precipitate CaCO3 along with by-products of NaCl and water. The variables examined include comparisons among five types of shells (blood shells, green shells, feather shells, kampak shells, and batik shells) at calcination temperatures of 30°C, 60°C, and 90°C. The best results were obtained from the synthesis using green shells, yielding an aragonite crystal polymorph percentage of 76.4% at a carbonation temperature of 90°C. Conversely, the smallest yield of aragonite crystal polymorph was observed with batik shells at 26.0%.
MUTATION AND PROMOTION SYSTEM AND ITS RELATION TO EMPLOYEESATISFACTION AND JOB PERFORMANCE OF WEST KALIMANTAN IMMIGRATION OFFICE Rinaldi, Udin; Sani, Sani; Martono, Martono
Jurnal Aplikasi Manajemen Vol. 16 No. 1 (2018)
Publisher : Universitas Brawijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.062 KB) | DOI: 10.21776/ub.jam.2018.016.01.13

Abstract

the purpose of this study is to investigate mutation and promotion system and its relation to employeesatisfaction and jobperformance of West Kalimantan Immigration Office.This study used descriptive qualitative research approach with Explanatory Research. 50 people were taken as sampleusing judgmental sampling method only to employees who have been transferred. Data was collected through questionnaires and analyzed using path analysis model. The results of this research answer the hypotheses: there is a significant influence of mutation on job satisfaction; there is a significant influence of promotion on job satisfaction; there is a significant influence of mutation on job performance;there is a significant influence of promotion on job performance, and there is a significant effect of job satisfaction on job performance. The datadiversity was explained using path analysis model of 62.2%, while the rest was explained by other variables not included in the model and error.
Pilah Sampah dari Sumber: Kunci Utama Pengelolaan Sampah Berkelanjutan di Desa Cimareme Kecamatan Ngamprah Novawan, Angga; Mardani, Santika Putri; Firmansyah, Dandy; Puja, Dewi; Rahmawati, Novie; Ghassani, Aldyth; Sugiharto, Dede Lucky; Muhamad Dias, Muhamad Dias; Devi, Santi; Jatiningtyas, Noor Aini; Ramadhiyani, Tyesha; Huda, Khairul; Sani, Sani; Nh. Salsabiela; Rahmanda, Rizky; Maulana, Adithiajaya; Tjahjadinata, Ruddy; Kusnadi; Romy, Achmad; Rohayati, Ati Sandi; Safira, Resi; Febriana, Esra; Ramadhan, Gilang; Pratama, Riqfi Aditya; Mardiansyah, Andri
Jurnal Pengabdian Tri Bhakti Vol 7 No 1 (2025): Jurnal Pengabdian Tri Bhakti
Publisher : Lembaga Pengabdian kepada Masyarakat Universitas Langlangbuana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70825/jptb.v7i1.2330

Abstract

The Community Service Program (PKM) was implemented in RW 05, Cimareme Village, Ngamprah District, West Bandung, with a focus on waste management and community empowerment. This area has economic, social, and educational potential that can be developed through a cross-disciplinary approach. The main activities include counseling, waste management, campus promotion, and participation in community social activities. The peak of the activity in the form of a Final Workshop emphasized the increase in environmental awareness, active community participation, and positive relations between students and the community. This PKM is expected to be the first step in sustainable collaboration between universities and partner villages.
FAKTOR-FAKTOR YANG MEMPENGARUHI PENYERAPAN TENAGA KERJA DI INDONESIA Widyaningsih, Atria Tiffany; Sani, Sani; Suseno, Joko; Murdiani, Agus M
Jurnal Ekonomi Integra Vol 14, No 1 (2024): Jurnal Ekonomi Integra
Publisher : STIE 'INDONESIA' Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51195/iga.v14i1.340

Abstract

Penelitian ini bertujuan untuk mengetahui faktor-faktor yang mempengaruhi penyerapatan tenaga kerja (TK) di Indonesia. Variabel yang diteliti yaitu tingkat upah, tingkat pendidikan, investasi, dan nilai produksi terhadap penyerapan TK di Indonesia. Jenis penelitian ini kuantitatif dengan data sekunder yang didapatkan dari Badan Pusat Statistik (BPS). Penelitian menggunakan metode analisis regresi data panel. Tahap-tahap yang dilakukan pada analisis regresi data panel yaitu uji chow, uji hausman dan uji hipotesis yaitu koefisien determinan (R2), Uji simultan (Uji F), dan uji parsial (Uji t). Model estimasi regresi data panel yang terpilih adalah Fixed Effect Model. Pengelolahan data menggunakan Eviews 9. Hasil penelitian ini menunjukan bahwa variabel tingkat upah (X1) berpengaruh positif dan tidak signifikan terhadap penyerapan TK di Indonesia, tingkat pendidikan (X2) berpengaruh positif dan tidak signifikan terhadap penyerapan TK di Indonesia, investasi (X3) berpengaruh positif dan signifikan terhadap penyerapan TK di Indonesia, dan nilai produksi (X4) berpengaruh negative dan signifikan terhadap penyerpan TK  di Indonesia.
PERAN VIDEO MARKETING DALAM PENINGKATAN BRAND AWARENESS DAN KEPUTUSAN PEMBELIAN: STUDI KASUS PADA INDUSTRI MAKANAN DAN MINUMAN KOTA PONTIANAK sulasti, Sulasti; Martono, Martono; Sani, Sani
Jurnal Ekonomi Integra Vol 14, No 2 (2024): Jurnal Ekonomi Integra
Publisher : STIE 'INDONESIA' Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51195/iga.v14i2.359

Abstract

By using brand awareness as a mediator, the study seeks to ascertain how video marketing affects consumer decisions in Pontianak City's food and beverage industries. Once the data passes the traditional assumption test and is deemed valid and reliable, the research employs a survey approach with path analysis. Video marketing is the dependent variable, purchasing decisions are the independent variable, and brand awareness is the mediating variable. sources of data using surveys and interviews. 60 consumers who had seen food and beverage vendors' promotional videos made up the research sample. The study's findings indicated that they agreed with every hypothesis. The entire 40% influence of brand recognition and video marketing on purchasing decisions is the most prominent exogenous variable on endogenous factors, and it is highly significant. In this study, the route analysis model can account for 91.4% of the diversity of data; the remaining 8.6% can be explained by other factors. 
Pengembangan E-Modul Sani (Social and Natural Sciences) untuk Meningkatkan Kemampuan Berpikir Kreatif dan Kritis pada Siswa Kelas 4 di SD Sedayu Bantul Sani, Sani
Jurnal Pendidikan Indonesia Vol. 6 No. 3 (2025): Jurnal Pendidikan Indonesia
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/japendi.v6i3.7453

Abstract

This study aims to develop and evaluate the feasibility of the SANI E-Module (Social And Natural Sciences) in enhancing the creative and critical thinking skills of fourth-grade elementary school students. The research method used is Research and Development (R&D) with the ADDIE model, which consists of five stages: analyze, design, develop, implement, and evaluate. The results indicate that the SANI E-Module is highly feasible based on the assessment of material experts (3.76), media experts (3.70), and user responses (3.60). Additionally, the implementation of this module effectively enhances students' creative and critical thinking abilities, as evidenced by an increase in the average score of 14.73 after its use. The SANI E-Module also provides a more interactive and engaging learning experience through enriched visuals and videos, while fostering students' digital skills.
Sintesis Pupuk Ca(No3)2 dari Limbah Industri Bleaching Earth Meidiani Pujahashita, Luh Eka; Tirta Sampelawang, Dirga; Hery Astuti, Dwi; Sani, Sani; Mulyani, Srie
Jurnal Indonesia Sosial Teknologi Vol. 3 No. 12 (2022): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1404.843 KB) | DOI: 10.59141/jist.v3i12.557

Abstract

Bleaching earth industrial waste is usually disposed of and landfilled in solid waste disposal. This waste is rich in calcium and sulfur content so that it has the potential as a raw material for making Calcium Nitrate fertilizer. This research aims to process bleaching earth industrial waste into calcium nitrate fertilizer which is rich in the macronutrient Nitrogen and the micronutrient Calcium in accordance with EU Agricultural standards. This research method was carried out by reacting the waste with nitric acid at different concentrations, 0.8M; 1M; 1.2M; 1.M; and 1.6M while being heated at different temperatures, at 50℃, 55℃, 60℃, 65℃, and 70℃, using a magnetic stirrer with a stirring speed of 350 rpm. Then filtered to remove impurities with the filtrate. The filtrate is added with ammonium hydroxide, so that a solid is formed and the pH has reached a neutral atmosphere, then it is filtered and left to stand at room temperature. XRF analysis was carried out to add elements contained in the fertilizer and Kjedahl Spectrophotometer to indicate the total N-content. The highest yield was obtained at a concentration of 1.6 M with a yield of 95.4440% with an actual weight of 2.3861 grams with an operating temperature of 70oC and for the best Calcium content, it was obtained at 23.3% with a N-Total content of 0.64% which complies with the EU Agriculture Commission Standard.
PENGARUH PENERAPAN METODE PEMBELAJARAN RESITASI TERHADAP KEMAMPUAN SISWA DALAM MENULIS TEKS DEBAT KELAS X SMA NEGERI 1 LAWE BULAN Sani Sani; James Marudut; Irfan Johari
Tuwah Pande: Jurnal  Ilmu Pendidikan dan Pengajaran Vol. 1 No. 1 (2022): Juni : Tuwah Pande: Jurnal Ilmu Pendidikan dan Pengajaran
Publisher : STKIP USMAN SAFRI KUTACANE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/tuwahpande.v1i1.18

Abstract

This study aims to determine the effect of the application of the Recitation Learning Method on Students' Ability in Writing Debate Texts for Class X SMA Negeri 1 Lawe Bulan in the 2021/2022 academic year. The method used in the quantitative approach. The research approach in this thesis uses a quantitative research approach. the population in this study were all students of class X SMA Negeri 1 Lawe Bulan in the 2021/2022 academic year, totaling 92 students consisting of 4 classes. The sample in this study was 21 students, namely class X IPS 1, which was taken using a purposive sampling technique or determined sampling. As for the results of the research and discussion that have been described in Chapter IV, it can be concluded that the Application of the Recitation Learning Method as a Debate Text Writing Learning for Class X Students of SMA Negeri 1 Lawe Month in the 2021/2022 Academic Year. This is evident from the average value of the initial test of Learning Writing Debate Text for students, which is 55.71 with a standard deviation of 9.95 and an increase in the final test score with an average value of 80.48 with a standard deviation of 7.85. the student and if it is associated with the Indonesian KKM score for high school is 75, then the Debate Text Writing Learning for the final test of students is included in good ability. In addition, at the observation t value > t table which is 9.00 > 2.08, then from the results of testing the hypothesis above, it can be concluded that there is an increase in the application of the Recitation Learning Method as an Effort for Learning to Write Debate Texts in Class X SMA Negeri 1 Lawe Months Years Learning 2021/2022
Co-Authors . Hamsiah abdillah, nabil zhillan Af'ida, Layyinatul Ainur Rofiq Aisyah, Aurela Naura Anisa Ety Purnamawati Aristio, Rivaldi Arke, Nadya Ramadhani Asbar Asbar, Asbar Astuti, Dwi Hery Desy Nuriyah Alifa Rusdiyana Devi, Santi Dwi Hery Astuti Febriana, Esra Firmansyah, Dandy Ghassani, Aldyth Gilang Ramadhan Hasanah, Rofidatul Hery Astuti, Dwi Hidayah, Wahyu Ika Nawang Puspitawati Ira Rahmawati Irfan Johari Istiqomah, Umi Ary James Marudut Jatiningtyas, Noor Aini JOKO SUSENO KHAIRUL HUDA, KHAIRUL Kusnadi Mardani, Santika Putri Mardiansyah, Andri Martono Martono Maulana, Adithiajaya Ma’rifah, Zustah Damul Meidiani Pujahashita, Luh Eka Muhamad Dias, Muhamad Dias Muhammad Fathoni, Muhammad Murdiani, Agus M Muttaqin, Anfai Syifa Nana Dyah Siswati, Anwar Zain and Mohammad Nh. Salsabiela Novananda, Ajie Novawan, Angga Prabowo,, Nina Sari Prasetyo Hadi Pratama, Bayu Prima Pratama, Riqfi Aditya Puja, Dewi Rahmanda, Rizky Rahmawati, Novie Ramadhiyani, Tyesha Rohayati, Ati Sandi Romy, Achmad Safira, Resi Sagala, Maria Tania Agustia Sari, Dewa Ayu Made Dearwita Siti Helmyati SRIE MULJANI Srie Mulyani, Srie Sugiharto, Dede Lucky sulasti, Sulasti Suprianti, Lilik Suprihatin Suprihatin SUSENO, JOKO Syahrul Syahrul Tirta Sampelawang, Dirga Tjahjadinata, Ruddy Udin Rinaldi Widyaningsih, Atria Tiffany Wirayudha, Umar Wulandari, Pingky Fantika