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Chemical Engineering Department, Faculty Of Sain And Technology, Universitas Jambi, Jambi Department Of Agriculture Product Technology, Faculty Of Agriculture, University Of Jambi Centre Of Excellent In Bio-Geo Material, University Of Jambi
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The Application of Pineapple Peel Derived-Adsorbent to Decrease FFA in Crude Palm Oil (CPO) : Pineapple peel-derived adsorbent Lestari, AD; Mursalin, Mursalin; Hizazi, Achmad; Ulyarti, Ulyarti; Nazarudin, Nazarudin
Jurnal Bio-Geo Material Dan Energi Vol. 4 No. 1 (2024): Journal of Bio-Geo Material and Energy (BiGME), March 2024
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jbigme.v4i1.33950

Abstract

Study on Ratio of Jerbung Shrimp Waste Powder (Fenneropenaeus Merguiensis de Man) and Purple Yam Starch in the Production of Bioplastics: Yam starch bioplastics Widiyawati, Sri; Nazarudin, Nazarudin; Ulyarti, Ulyarti
Jurnal Bio-Geo Material Dan Energi Vol. 4 No. 2 (2024): Journal of Bio-Geo Material and Energy (BiGME), September 2024
Publisher : PUI BiGME Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jbigme.v4i2.36918

Abstract

This research aims to determine to study the ratio of Jerbung shrimp waste powder and purple yam starch in the production of bioplastics. This research used a Completely Randomized Design (CRD) with 5 levels of ratio of jerbung shrimp waste powder and purple yam, namely 0:5; 0.5:4.5; 1:4; 1.5: 3.5 and 2:3. Each treatment was repeated 3 times to obtain 15 experimental units. The results showed that the ratio of Jerbung shrimp waste powder and starch had a significant effect on tensile strength, elongation, thickness, water resistance and WVTR. The best bioplastic characteristics was best produced using the ratio 0.5:4.5 with tensile strength of 18.17 N/mm2, elongation of 68.06%, thickness of 0.35 mm, water resistance of 75.15 %, WVTR 22.29 g/m2.hour.
Vitalitas Bahasa Wabo di Kampung Wabo Tamrin; Budiono, Satwiko; Nazarudin
Linguistik Indonesia Vol. 42 No. 1 (2024): Linguistik Indonesia
Publisher : Masyarakat Linguistik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26499/li.v42i1.558

Abstract

Upaya pelindungan bahasa minoritas di Provinsi Papua perlu mendapat perhatian mendalam karena jumlah bahasa di Provinsi Papua terbilang banyak dengan jumlah penutur yang sedikit sehingga ancaman kepunahan menjadi tinggi. Salah satu bahasa minoritas di Provinsi Papua yang belum mendapat upaya pelindungan adalah bahasa Wabo di Kabupaten Kepulauan Yapen. Penelitian ini berusaha mengkaji vitalitas dari bahasa Wabo di Kampung Wabo. Tujuan penelitian ini adalah (1) menjelaskan situasi dan kondisi kebahasaan terkini, dan (2) mengidentifikasi indikator vitalitas bahasa mana yang perlu dikembangkan sebagai upaya pelindungan bahasa lanjutan ke depannya. Penelitian ini menggunakan metode kualitatif dengan teknik pengumpulan data melalui observasi partisipatoris. Analisis data menggunakan indikator vitalitas bahasa dari UNESCO. Hasilnya, vitalitas bahasa Wabo di Kampung Wabo dapat dikategorikan dengan status kritis secara keseluruhan. Hal ini karena bahasa Wabo memiliki kondisi yang lemah di semua indikator vitalitas bahasanya dan penyebab utamanya berasal dari absennya transmisi antargenerasi. Indikator yang paling rendah dan membutuhkan upaya pelindungan bahasa secepatnya adalah (1) ketersediaan bahan ajar dan literasi, (2) ranah dan media baru, serta (3) dokumentasi bahasa. Ketiga indikator tersebut dapat diupayakan oleh pihak eksternal penutur, sedangkan indikator transmisi antargenerasi hanya dapat diupayakan oleh pihak internal penutur bahasa Wabo.
Efektivitas Project Based Learning dan Realistic Mathematics Education Berbasis Asesmen Projek terhadap Literasi Numerasi Siswa SD di Lingkungan Lahan Basah Syadzali, Ahmad; Darmiyati, Darmiyati; Sunarno, Sunarno; Mahmuddin, Mahmuddin; Dewantara, Dede; Nazarudin, Nazarudin
Journal of Education Research Vol. 5 No. 4 (2024)
Publisher : Perkumpulan Pengelola Jurnal PAUD Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37985/jer.v5i4.1637

Abstract

Matematika memiliki peran krusial dalam pendidikan dasar hingga perguruan tinggi, tidak hanya sebagai mata pelajaran tetapi juga sebagai keterampilan penting dalam kehidupan sehari-hari. Tujuan pengajaran matematika adalah untuk membekali siswa dengan kemampuan berpikir kritis dan pemecahan masalah. Namun, hasil Program for International Student Assessment (PISA) 2022 menunjukkan rendahnya skor kompetensi matematika siswa di Indonesia termasuk di Kabupaten Banjar, yang menghadapi tantangan serius dalam literasi numerasi. Penelitian ini bertujuan untuk mengkaji efektivitas kombinasi Project-Based Learning (PjBL) dan Realistic Mathematics Education (RME) berbasis asesmen proyek dalam meningkatkan literasi numerasi siswa di SDN Sungai Miai 10 Banjarmasin, melibatkan 60 siswa kelas IV. Metode yang digunakan adalah quasi-eksperimen dengan desain faktorial 2x2. Hasil penelitian menunjukkan bahwa penerapan PjBL dan RME secara bersamaan dapat secara signifikan meningkatkan keterampilan berpikir kritis matematika siswa. Penilaian berbasis proyek terbukti lebih efektif dibandingkan tes tertulis dalam mengukur pemahaman konsep matematika. Temuan ini memberikan kontribusi penting bagi pengembangan strategi pembelajaran yang lebih efektif dalam pendidikan dasar di Indonesia, terutama di daerah dengan konteks lingkungan lahan basah yang kaya akan relevansi kehidupan nyata.
Yam Starch and Chitosan-Based Bioplastics to Improve Shelf Life of Pempek Ulyarti, Ulyarti; Ninada, Ninada; Rahmi, Silvi Leila; Salim, Agus; Nazarudin, Nazarudin
Jurnal Penelitian Pendidikan IPA Vol 9 No 8 (2023): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i8.3163

Abstract

This study aimed to determine the effect of yam starch and chitosan based-bioplastics packaging on the microbiological and sensory qualities of pempek during storage. This research was carried out by packing pempek using 2 different packaging: bioplastics and polyethylene plastic. Pempek in each group was stored for 0, 8, 16, 24, 48 hours at room temperature. The total of Staphylococcus aureus bacterial was determined using colony forming unit. Sensory quality was obtained by determination of color, texture and aroma of pempek using 5 skilled panelists. The result showed that the use of bioplastics packaging from yam starch and chitosan decreased the growth of Staphylococcus aureus bacteria in pempek compared to the use of polyethylene plastic packaging. The decrease in pH was in line with the growth of S.aureus that is higher in pempek packaged with polyethylene plastics. The use of bioplastics also maintained sensory qualities of pempek during storage better than polyethylene plastics
Development of Crackers Using Purple Yam Flour: Physicochemical and Sensory Characterization Ulyarti, Ulyarti; Cahyati, Septina Yuri; Wulansari, Dian; Tafzi, Fitry; Surhaini, Surhaini; Armando, YG; Nazarudin, Nazarudin
Jurnal Penelitian Pendidikan IPA Vol 9 No 6 (2023): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i6.3996

Abstract

Purple yam tuber is known to contain a lot of bioactive components useful for human health. This study was conducted to utilize the tuber in form of purple yam flour for crackers processing and to understand the effect of purple yam flour concentration on the characteristics of crackers.  A completely randomized design was applied using several concentrations of purple yam flour (0, 10%, 20%, 30%, 40%, and 50%) and 3 replications. The concentration of purple yam flour affects volume expansion, color values (L*, a*, and b*) and anthocyanin content of the crackers, but did not affect its water content and texture. The higher concentration of purple yam flour decreased volume expansion, L*, b*, and overall acceptance of the crackers, but increased the anthocyanin content and a* values.  This research proposes that 30% purple yam flour shall be applied to partly substitute wheat flour in crackers processing.  At this concentration, crackers were accepted by the panelist (like it slightly) and has hardness value 287.2 gF, L* 70.35, a* 11.12, b* 20.18, 2.5% water, and anthocyanin content 179.6 mg cyanidin3-glucoside equivalent/g.
Improving Lake Water Clarity by Cultivation of Water Hyacinth (Eichornia crassipes) Mursalin; Hizazi, Achmad; Nazarudin; Subagyo, Agus
Jurnal Penelitian Pendidikan IPA Vol 11 No 1 (2025): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i1.8504

Abstract

Research on the use of water hyacinth (WH) to improve the quality of polluted water has been widely reported, but discussions on the ability of WH to clear turbid water are still rare. This research examines the possibility of using WH as a natural clarifier for Lake Bata. Treatments with 3 variations in the percentage of lake closure with WH cultivation (25, 50, and 75%) were applied for 40 days with 3 repetitions. Water quality and turbidity measurements were carried out every 4 days. The data was analyzed descriptively in graphical form to see a model of these changes. It was found that the pollutants Fe, Hg, nitrate, phosphate and ammonia were present in very small and safe quantities, but the water turbidity level did not meet the standards of the Indonesian Minister of Health yet. During the WH growth, the turbidity decreasing follows the equation Y(25) = - 0.114x + 28.52; Y(50) = -0.195x + 29.83; and Y(75) = -0.235x + 30.14 for cover percentages of 25, 50 and 75% respectively, where y for the turbidity (NTU) and x for WH growth time (days). To meet turbidity standards, WH coverage percentages of 25, 50, and 75%, require cultivation periods of 32, 28, and 24 days, respectively.
Activities, Resources, and Learning Environment: A Case Study of Science Learning at Sekolah Alam Andriani, Nova; Maison; Nazarudin
Jurnal Penelitian Pendidikan IPA Vol 11 No 1 (2025): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i1.9569

Abstract

This study examines science education activities, resources, and the learning environment at Sekolah Alam Al Fath Jambi Junior High School. Using a case study approach, the research involves direct observations, interviews with teachers and students, and learning materials analysis to understand the impact of various learning methods on student outcomes. The findings highlight that science learning activities align with the Sekolah Alam concept, emphasizing project-based, experiential, nature-based, and collaborative approaches. Learning occurs inside and outside the classroom, utilizing the natural surroundings for exploration and field experiments. Resources include school gardens, outbound areas, natural materials, and collaborations with local experts. The learning environment, assessed through the WIHIC questionnaire, supports student success through dimensions like cohesiveness, teacher support, involvement, task orientation, cooperation, equity, enjoyment, and academic efficacy. This study underscores the effectiveness of nature-integrated and experiential approaches in enhancing science learning outcomes and offers recommendations for advancing educational practices in similar settings.
Effect of the Ratio of Shrimp Waste Powder (Fenneropenaeus merguiensis de Man) to Glycerol on the Characteristics of Yam Starch-Derived Bioplastics Ulyarti; Ramadhani, Adisty; Mursyid; Nazarudin
Jurnal Penelitian Pendidikan IPA Vol 11 No 10 (2025): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i10.11156

Abstract

Yam starch-based bioplastics generally exhibit low mechanical properties. However, the addition of shrimp waste powder has been shown to improve the tensile strength and elongation of yam starch bioplastics, with the enhancement occurring within an optimal range. Glycerol, on the other hand, is known to affect bioplastic properties in a dose-dependent manner. This study was conducted to investigate the effects of shrimp waste powder and glycerol ratios on the characteristics of yam starch-derived bioplastics.  A Completely Randomized Design (CRD) was used, consisting of five treatment levels with three replications. The treatment levels were shrimp waste powder to glycerol ratios of 0:3, 0.5:2.5, 1:2, 1.5:1.5, and 2:1. The results showed that the shrimp waste powder to glycerol ratio significantly affected the tensile strength, elongation, thickness and water vapor transmission rate (WVTR) of the bioplastics, but had no significant effect on water absorption.  The biodegradability of bioplastic in soil ranged from 144 to 149 days.   The best treatment was 1:2 ratio of shrimp waste powder to glycerol, which resulted in a tensile strength of 19.26 N/mm2, elongation of 84.09%, thickness of 0.35 mm, water absorption of 30.79%, WVTR of 20.80 g/m2.h and a faster decomposition rate compared to synthetic plastics.
Pengaruh Anomali Pasar terhadap Return Saham Perusahaan LQ-45 Kasdjan, Allan Moechamad Zaennoer; ., Nazarudin; Yusuf, Junaedi
Jurnal Kajian Akuntansi Vol 1 No 1 (2017): JUNI 2017
Publisher : Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jka.v1i1.512

Abstract

Abstract The debate about the concept of efficient markets are still common among experts until now. However emerged a number of new studies which suggested market anomaly which is a deviation from the concept of efficient markets. One kind of market anomalies is most often observed seasonal anomalies in this study consisted of the day of the week effect, week four effect, and the January effect. This research aims to determine whether there are significant market anomalies on stock return. The unit of analysis in this study is the daily stock return data LQ-45 from the date of July 1st, 2013 to June 30th , 2014. The sample in this research is secondary data and selected by using purposive sampling method. The sample of this research consist of 37 companies listed in index LQ-45 consistently in the period July 1st, 2013 to June 30th, 2014. The analysis method of this research used regression analysis with dummy variable.The result of this research showed that the day of the week effect didn’t have negative significant effect to stock return, week four effect didn’t have negative significant effect to stocks return, and Jauary effect didn’t have positive significant effect to stock return. Keywords: Day Of The Week Effect; Week Four Effect; January Effect; Stock Return; Market Anomaly. Abstrak Perdebatan tentang konsep pasar yang efisien masih umum di kalangan para ahli sampai sekarang. Namun, kemunculan pasar anomali yang merupakan penyimpangan dari konsep pasar yang efisien. Salah satu jenis anomali pasar adalah anomali musiman yang paling sering diamati dalam penelitian ini yang terdiri dari efek hari minggu, efek minggu keempat, dan bulan Januari Efek Penelitian ini bertujuan untuk mengetahui apakah ada anomali pasar (efek hari minggu, efek minggu ke empat, pengaruh Januari) terhadap return saham. Unit analisis dalam penelitian ini adalah data return saham harian LQ-45 Dari tanggal 1 Juli 2013 sampai 30 Juni 2014. Penelitian ini memanfaatkan data sekunder dengan metode purposive sampling. Konsistensi LQ-45 pada periode 1 Juli 2013 sampai 30 Juni 2014. Metode analisis dalam penelitian ini adalah hasil dari penelitian ini Pengaruh efek minggu ini tidak berpengaruh negatif terhadap return saham, pengaruh minggu ke empat tidak memiliki Efek negatif terhadap return saham, dan efek January tidak berpengaruh positif terhadap return saham.Kata kunci: Day Of The Week Effect; Week Four Effect; January Effect;Stock Return; Anomali Pasar.
Co-Authors -, Maison AA Sudharmawan, AA Abu Bakar Abu Bakar Achmad Hizazi Achmad, E Adang, Ferry Ade Yulia Afreni Hamidah Afrida Afrida Afrida Afrida Agus Ari Setiawansyah Agus Salim Agus Salim Agus Subagyo Agustini, Yetty Ahmad Syadzali Alfernando, Oki Allan Moechamad Zaennoer Kasdjan, Allan Moechamad Zaennoer Amalia, Rahma Andi Aderus Andriani, Nova Andrilolo, Andrilolo Arafi Satria Nugraha Ardina, V Aris Doyan Aris Doyan Aritonang, Anthoni Batahan Armando, YG Asep Bambang Susanto asih, yekti purwo Asmiyunda Asni Johari Asrial Asrial , Asrial Asyhar, R Balqis Rahmatullah Putri Bilady, Royhan Budiono, Satwiko Cahyati, Septina Yuri Darmiyati Dedi Gusriadi Degirmenci, Volkan Deni Irawan Dewantara, Dede Dian Wulansari Dian Wulansari, Dian Dwina, Dila Oktarise Dyah Kumalasari E. Maryana Edy Panda Erawaty, Lela Ervan Johan Wicaksana Evita Anggereini Firdaus Muhammad FITRY TAFZI Friani, Desi Gabriel, Marthen Gusriadi, Dedi Hadi Nur Hadistya Suryadri Hasnita, Aufa Haviz, M Hesti Megawati Hutwan Syarifuddin I. Rahmayani Ibnatun Rif'ah Ilham Falani Indra Agung Pratama Indra Indra Indriyani Indriyani, I Iqbal Ridho Juliandri Ira Galih Ira Galih Prabasari Irma Rahmayani Irma Rahmayani Irpan Ali Rahman Ishak, Putri Mutiara Ismail, Gurawan Dayona Juanda, Adrisma Jumardi Budiman Junaedi Yusuf, Junaedi Junri anton Situmorang Kanto, Rizky Khusnelia, Jeni Kurniaty, Dwi Lai, Sin Yuan Lavlinesia Lavlinesia Lavlinesia, lavlinesia Leny Marlinda Lestari, AD Lisani Lisani, Lisani Liza Aulia Yusfi M. Rizki Mahardini, Angger Putri Mahmuddin Mahmuddin Marlinda, Leny Martinus Maslim Medina Alia Rahmawati Muhammad Agus Muljanto Mukhamad Nurhadi, Mukhamad Mundarti, Sri Murdia, Agus Miranda Mursalin Mursalin . Mursalin, M Mursyid Mursyid . Mursyid Mursyid N Panjaitan Nawahdani, Ahmad Mansur Ninada, Ninada Nova Kafrita Nur Wulandari Nursela, S Oki Alfernando Oman Zuas Pamungkas, Putra Panda, Edy Prabasari, IG Prabowo, Yulius Pratama, Seftiananda Prihatin, Edi Putri Sakinah Harahap Putri, Niken Tasya Clara Ra'ida Raudhatussya'rifah Rahayu Suseno Rahmayani, I Ramadani, Suci Putri Ramadhani, Adisty Rara Ayu Lestary Ratumanan, Tanwey Ria Amelia Yolanda Rifqi Oktarianda Ripka Nainggolan Rizky Kanto Rosmawati Sipayung Rosyani Rulaini, Melati S.P. Amalia Said Sanimubarak Al'qudusi SALPRIMA YUDHA S Salsabila Setyaningsih Satria, Wiranto Septikasari, Anisa Nur Silvi Leila Rahmi Siregar, Nurainun Siti Nursela Soerja Koesnarpadi Sri Widiyawati Sulistiana, Ika Putri Sunarno Sunarno Surhaini Surhaini, Surhaini Suripto Dwi Yuwono SUSENO, JOKO Susilawati - SYAHRIAL SYAHRIAL Tamrin Teguh Wirawan, Teguh Tesy Pratami Tezar, Muhammad Tomara, Anggel Ulyarti Wahyu Ningrum, Wulan Wahyudi Zahar Widyaningsih, Atria Tiffany Widyastuti, Nita Winda Ananda Wirhanuddin, Wirhanuddin Y. G. Armando Yani, Zunarta Yaumidin, Umi K Yogie Yogendra Hans Yuana yuana, Yuana Yuhermita, NM Yuniar Ponco Prananto Yuwono, Suripto D Zunarta Yani