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All Journal Matematika dan Sains Jurnal EMT KITA Emerging Science Journal Communications in Science and Technology Mimbar Ilmu JURNAL PENELITIAN EKONOMI DAN AKUNTANSI (JPENSI) Jurnal Ilmiah Edunomika (JIE) Management Studies and Entrepreneurship Journal (MSEJ) Jurnal ABDINUS : Jurnal Pengabdian Nusantara CORD Jurnal MESIL (Mesin Elektro Sipil) Journal of Economics and Business UBS IAIC Transactions on Sustainable Digital Innovation (ITSDI) Syifaul Qulub: Jurnal Bimbingan dan Konseling Islam Jurnal Jaring SainTek Abdi Masya Journal for Lesson and Learning Studies Journal of Education Research Formosa Journal of Sustainable Research (FJSR) Prosiding Seminar Nasional Pengabdian Kepada Masyarakat Edukasiana: Jurnal Inovasi Pendidikan Proceeding of International Conference Health, Science And Technology (ICOHETECH) Jurnal Jaringan Penelitian Pengembangan Penerapan Inovasi Pendidikan (Jarlitbang) Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII JS (Jurnal Sekolah) Paradoks : Jurnal Ilmu Ekonomi HIKMATUNA: Journal for Integrative Islamic Studies Indo-Fintech Intellectuals: Journal of Economics and Business OKTAL : Jurnal Ilmu Komputer dan Sains Cilpa : Jurnal Ilmiah Pendidikan Seni Rupa Hikmatuna Majapahit Journal of Islamic Finance dan Management Al-Kharaj: Jurnal Ekonomi, Keuangan & Bisnis Syariah El-Mal: Jurnal Kajian Ekonomi & Bisnis Islam Majapahit Journal of Islamic Finance dan Management Riset Akuntansi dan Keuangan Indonesia Jurnal Ekonomika dan Bisnis Blockchain Frontier Technology (BFRONT) JER Scientific Contribution Oil and Gas LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI Journal of Ekonomics, Finance, and Management Studies Jurnal Wana Tropika Atestasi : Jurnal Ilmiah Akuntansi Journal of Indonesian Social Sciences and Humanities Environmental Insight Journal Pena Edukasia
Triyono
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Study of green and sustainable heterogeneous catalyst produced from Javanese Moringa oleifera leaf ash for the transesterification of Calophyllum inophyllum seed oil Ramdhani, Destania Ayu; Wega Trisunaryanti; Triyono
Communications in Science and Technology Vol 8 No 2 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.2.2023.1202

Abstract

The transesterification of Calophyllum inophyllum seed oil into biodiesel using Javanese Moringa oleifera leaf ash catalyst with various reaction conditions has been completed. MA-500 (Moringa ash at 500°C for 3 h) and MA-900 (Moringa ash at 900°C for 3 h) catalysts were obtained by grinding Javanese old Moringa oleifera leaf (MP) and then calcined for 3 h at 500 and 900°C. The crude Calophyllum inophyllum seed oil was degummed (OD) prior to continue the esterification process (ODE). The MA-500 and MA-900 catalysts were tested for their activity and selectivity through the ODE transesterification with various catalyst weights (3, 6, and 9% (w/w)), reaction temperature (55, 60, and 65°C), oil: methanol mole ratio (1:3, 1:6, and 1:9), and reaction time (60, 90, 120, and 150 minutes). The results showed that the MA-500 and MA-900 catalysts contained 18.17% and 52.91% Ca respectively. The esterification reaction could reduce FFA levels to 89.82%, from 19.46% to 1.98%. ODE transesterification with MA-900 catalyst optimum reaction conditions with a catalyst weight of 3%, reaction temperature of 60°C, oil: methanol mole ratio of 1:9, and reaction time of 120 min, 76.17% FAME yield was observed. The MA-900 catalyst has the potential to be an effective green catalyst.
Preparation of Mo-impregnated mordenite catalysts for the conversion of refined kernel palm oil into bioavtur Trisunaryanti, Wega; Triyono; Wijaya, Karna; Kartini, Indriana; Purwono, Suryo; Rodiansono; Mara, Ady; Budiyansah, Amsal
Communications in Science and Technology Vol 8 No 2 (2023)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.8.2.2023.1288

Abstract

The research aims to study the effects of Mo metal embedded on H-Mordenite on its activity and selectivity of hydrodeoxygenation (HDO) for Refined Palm Kernel Oil (RPKO) into bioavtur. The RPKO was obtained from the results of degumming and bleaching process of palm kernel oil and then analyzed using Gas Chromatography-Mass Spectrometer (GC-MS). The impregnation of Mo metal was carried out by spraying using an ammonium heptamolybdate precursor solution ((NH4)6Mo7O24•4H2O) with an initial Mo metal content of 5, 10, and 15wt% of H-Mordenite to produce 5-Mo/Mor, 10-Mo/Mor, and 15-Mo/Mor. The 15-Mo/Mor catalyst produced the highest amount of liquid product (46.08wt%) with bioavtur yield of 43.19wt%. The usability test showed that 15-Mo/Mor catalyst still produced a good performance after three times of use in the RPKO feed HDO with the second and third run test liquid product of 34.82 and 46.14wt% respectively with bioavtur yield of 32.58 and 43.45wt%, respectively.
Bibliometric Waqf Management in Indonesia Heppy Purbasari; Bawono, Andy Dwi Bayu; Rangga Handika; Triyono
Riset Akuntansi dan Keuangan Indonesia Vol. 8 No. 2 (2023): Riset Akuntansi dan Keuangan Indonesia
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/reaksi.v8i2.3054

Abstract

A significant quantity of abandoned waqf lands in Indonesia is evidence that the optimal management of waqf has yet to be achieved. The primary objective of this study is to identify and analyze the existing research lacunae in prior studies, hence facilitating the delineation of future research directions. The employed research methodology utilizes a quantitative approach, wherein publications are quantified using the publish or perish tool and analyzed using the Vosviewer software afterward. This study employs the terms "waqf management" OR "waqf management" AND Indonesia to search for papers inside the Scopus database, focusing on the research period from 2015 to 2022. The study yielded a total of 14 papers about the management of waqf. These articles were categorized into four distinct research areas, namely: (1) the enhancement of productive waqf, (2) the administration of the waqf system, (3) the legal aspects of waqf, and (4) crowdfunding through Sukuk. Based on the four themes above, it is evident that the advancement of productive waqf has been implemented throughout many waqf institutions in Indonesia, yielding favorable outcomes in enhancing the socio-economic conditions of impoverished individuals.
Thermal and Microstructure Analysis of Cocofoam Made from Blended Coconut Fiber with Latex Compound Anom, I. D. K.; Setiaji, Bambang; Trisunaryanti, Wega; Triyono
International Coconut Community Journal Vol 29 No 1 (2013): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (587.603 KB) | DOI: 10.37833/cord.v29i1.93

Abstract

Thermal and microstructure analysis of cocofoam made from vulcanized coconut fiber and latex compound were conducted. The cocofoam was produced by blending coconut fiber and latex compound with weight ratio of 10/25 (CF5-1) and 20/55 (CF5-2) at room temperature. The cocofoam characters were then analyzed by Scanning Electron Microscope (SEM), Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DTA) instruments. The result showed that the increase of coconut fiber and latex compound ratio produced a higher density of cocofoam. The highest value density was 0.6920 g/cm3 with flexibility of 90% produced by the CF5-2 sample. The SEM analysis showed that both specimens surface of the CF5-1 and CF5-2 samples have different pores size and the latex compound is not distributed thoroughly in the cocofoam. The thermal analysis showed that the production of cocofoam was largely determined by latex compound that served as fiber binder matrix. Cocofoam started to degrade at the temperature of 90°C and was damaged when it was heated at the temperature of 115°C for 2.5 hours.
The Production and Characterization of Carbon Composite from Coconut Shell Charcoal Rampe, Meytij Jeanne; Setiaji, Bambang; Trisunaryanti, Wega; Triyono
International Coconut Community Journal Vol 28 No 1 (2012): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (971.592 KB) | DOI: 10.37833/cord.v28i1.109

Abstract

Structure and chemical composition of coconut shell carbon with polyvinyl alcohol (PVA) as the stimulant through the observation of TG-DTA, SEM-EDS, FTIR and XRD had been studied. The process was carried out by calcining coconut shell charcoal at the temperature of 873 and 1023 K under nitrogen flow, then mixed with polyvinyl alcohol (PVA) under composition of 2.5 to 7.5% wt. in water solvent. The development of carbon composite structure was observed by heating the samples in Argon gas of 1673 K, the rate of temperature was 10 K/min in 3 hours. The products were then analyzed by TG-DTA, SEM-EDS, FTIR and XRD. The result showed that the products were in uniform particle size of micrometer dimensions and spherical particles in shape, with average content of C element at 97.44% wt., aromatic character and semi-crystalline structure.
Pengaruh Kinerja Keuangan, Ukuran Perusahaan, dan Pandemi Covid-19 Terhadap Return Saham Aini, Sania Qurrotu; Triyono
Management Studies and Entrepreneurship Journal (MSEJ) Vol. 5 No. 1 (2024): Management Studies and Entrepreneurship Journal (MSEJ)
Publisher : Yayasan Pendidikan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/msej.v5i2.4444

Abstract

The purpose of this study is to determine how finansial performance, company size, and the COVID-19 pandemic affect stock returns on the LQ 45 IDX for the period 2019 to 2021. Information on the company’s annual report can be found at www.idx.co.id, http://finance.yahoo.com, and the company’s official website. Collected 69 data using purposive sampling method. Multiple linear regression, R-square, and t-statistic test were the data analysis processed using SPSS 25. It was gathered that current ratio, debt to equity ratio, firm size, and COVID-19 pandemic all had an impact on stock returns. On the other hand, return on equity and total aset turnover have no affect on stock return.
The Effect Of Acid Strength Of Bronsted Acid Site On The Ability Of The Catalyst To Break The Carbon Chain Bonds Of 1-Octadekenes Into Alkanes And Short Chain Alkenes As A Substitute For Fossil Fuels Donatus Setyawan Purwo Handoko; Triyono
Scientific Contributions Oil and Gas Vol. 46 No. 1 (2023): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.46.1.311

Abstract

Research has been carried out on the strength of acids on their ability to break carbon chain bonds. The preparation of the zeolite catalyst includes soaking the zeolite in distilled water for 24 hours, followed by calcination and oxidation, then followed by reduction. Further acid treatment with 6 M HCl. Then followed by washing with H2O until neutral pH (pH = 7), then dried in an oven with a temperature of 105 oC, then after becoming a zeolite catalyst used in the cracking reaction of 1-octadekenes into alkanes and short chain alkenes.The results obtained are as follows for the type of zeolite catalyst with code Z having a very low acidity level of 3.15 mmol NH3/mgZeolite, then the zeolite has been modified by a calcination process for 24 hours given the code ZCA which shows a moderate acidity level of 5, 76 mmol NH3/mg Zeolite, then the catalyst with the code ZCAO is zeolite which has been calcified and oxidized and shows a yield of 9.54 mmol NH3/mg Zeolite. Catalytic hydrocracking of 1-octadecene with ZCAO catalyst at a variation of the hydrogen flow rate of 20 mL/minute and a temperature of 450 oC resulted in alkanes and alkenes < C12 which was 15.29% maximum, followed by a hydrogen flow rate of 10 mL/minute at temperatures of 500 and 400 oC.
Calculation Of Nitrogen Heat Adsorption On Various Catalysts Usingbet-Constant (Bet-0 Data) Triyono; Wega Trisunaryanti; Oberlin Sidjabat
Scientific Contributions Oil and Gas Vol. 31 No. 3 (2008): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

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

Abstract

BET-C (Brunauer-Emmett-Teller-Constant) was used to calculate the heat of adsorp-tion (AHaijj of nitrogen gas on the various catalysts. The -well-known Brunauer-Emmett-Teller (B.E.T.) equation is usedprimarily to determine the surface area from the physicaladsorption of a gas on a solid surface. Surface area of catalysts -was determined by usingsurface area analyzer (NOVA 1000). The BET-C included in the data is usually neglected or is not taken into accoimt. How-evei; by using the basic principles of the adsorption theory fitted ivith the functions basedon the BET adsorption model, the iniportant data of BET-C can be shoivn in this study. Thevalue of the AHa(h (NJ for zeolite, H-zeolite, Pt/zeolite, Pt-Pd/zeolite, and Pt-Ce/zeolitecalculatedfrom the equation derivedfrom BET-C are -6.43, -6.52, -8.78, -8.69, -9.71 and-9.52 kJ/mol, respectively.
Pengaruh Air dan Etanol terhadap Reaktivitas Hidrogenolisis Isoamil Alkohol pada Katalis Ni/Zeolit Triyono; Oberlin Sidjabat
Lembaran Publikasi Minyak dan Gas Bumi Vol. 42 No. 2 (2008): LPMGB
Publisher : BBPMGB LEMIGAS

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

Abstract

Air, etanol (etilalkohol) dan isoamil-alkohol dapat membentuk larutan azeotroph. Di dalam limbah cair, keberadaan alkohol selalu didapatkan bersama-sama dengan larutan berair. Minyak fusel mengandung berbagai macam senyawa alkohol, seperti etanol dan isoamilalkohol. Di dalam penelitian ini, dilakukan proses hidrogenolisis antara campuran isoamil-alkohol dengan air dan juga campuran antara isoamil-alkohol dan etanol dengan masing-masing kadar air atau etanol yang divariasikan. Katalis yang digunakan adalah Ni/Zeolit dengan kandungan Nikel 0,4% berat yang dibuat dengan metoda impregnasi basah. Hasil penelitian menunjukkan bahwa bila jumlah kadar air meningkat (bertambah) maka konversi isoamil-alkohol akan menurun (berkurang). Di lain fihak, bila jumlah kadar etanol meningkat (bertambah) maka konversi isoamil-alkohol akan meningkat (bertambah).
Pengaruh Kualitas Audit Dan Perlindungan Investor Terhadap Earning Response Coefficient (Erc) Dimoderasi Multiple Directorships Di Perusahaan Multinasional Indonesia Tabah Rizki -; Triyono; Arina Hidayati
Indo-Fintech Intellectuals: Journal of Economics and Business Vol. 4 No. 5 (2024): Indo-Fintech Intellectuals: Journal of Economics and Business (in-Press)
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/ifijeb.v4i5.1914

Abstract

Tujuan penelitian ini adalah untuk menguji pengaruh kualitas audit, perlindungan investor, terhadap kualitas laba yang diproksikan dengan earning response coefficient (ERC) yang dimoderasi multiple directorships. Penelitian ini menggunakan perusahaan manufaktur yang berjumlah 138  sebagai sampel penelitian dengan teknik purposive sampling selama tahun 2018 -2023. Jenis penelitian yang digunakan merupakan  penelitian  kuantitatif  dengan  sumber  data  sekunder. Alat analisis yang digunakan dalam penelitian ini menggunakan analisis regresi berganda dengan pooled least square. Hasil penelitian menunjukkan bahwa kualitas audit dan perlindungan investor berpengaruh positif terhadap ERC. Selain itu, hasil penelitian juga menunjukkan bahwa peran multiple directorship dapat memperkuat pengaruh kualitas audit dan perlindungan investor terhadap ERC. Penelitian ini dapat memberikan gambaran yang lebih berkualitas berkaitan dengan informasi laba yang disajikan sehingga mampu menjadi pertimbangan manajemen perusahaan dalam pengambilan keputusan dan bagi investor untuk melakukan investasi terhadap sebuah perusahaan.
Co-Authors Achmad Lutfi Fuadi Adi Tri Tyaasmadi Ady Mara, Ady Afdilah, Ilham Agiel, Raiddin Muhamad Agus Suyanto Aini, Sania Qurrotu Akbar, Andi Muh. Fadlullah Akbar, Hammar Ilham Aminuyati Amyati, Amyati Andy Dwi Bayu Bawono Arif Setyo Nugroho Arina Hidayati Arri Handayani Asiati, Devi Ata, Sonata Sukama Wijaya Aulia, A Ayu Sanjaya, Yulia Putri Bambang Kusharjanta Bambang Margono Bambang Setiaji Bambang Setiaji Budiyansah, Amsal Cahyani, Rizkha Gita Catur Setyawan K Catur Setyawan Kusumohadi Chamim, Moch. Dewanti, Adinda Pramesdya Rasita Dharma Priatmaja, Ade Dika, Aisyah Dika Mastura Dikadijayati Dini Rahmawati Dini Rakhmawati Diva Nanda Ayuk Agustina Dody Ariawan Donatus Setyawan Purwo Handoko Dwi Hanan, Fauzy Dynanda Eliza Nadia Loka Eko Purwanto Eko Surojo Endang Widati Faisol Mukarom Fatchan Achyani Fatmawati, Dyah Ayu Faturahman, Adam Fifi Aswita Mandala Sari Fitria, Anissa Fransisca Maria Farida Gutomo Bayu Aji Harjo Seputro, Harjo Harminto, Yopi Haryo Satriya Oktaviano Heppy Purbasari Hidayat, Erjuyn Yayan Himawan Hadi Sutrisno I D. K. Anom I. D. K. Anom Iin Purnamasari Ike Prety Shinta Ikhlilla Ayu Alfida Ilham Habibi, Ilham Ilman Arpi Imam Basori Indriana Kartini Indriyana Rachmawati Izzah Nur Aida Zur Raffar Jafar Amiruddin Ja’far Amiruddin Karna Wijaya Kuncoro Diharjo Kurniawan, Fuat Edi Lamin Khaira Majid, Faishal M. Marlina, Eva Maulidiawati Meytij Jeanne Rampe Mina Olivia Rahayu Mori Dianto, Mori Muhammad Rizqi Darmawan Mustofa, Siti Solekah Mycelia Paradise Nabila Putri Dwi Septiani Ngadi Ningrum, Vanda Noer Sasongko Norman Luther Aruan, Norman Luther Nugroho Heri Cahyono Nur Azizah Nur Rahmawati Nurul Muhayat Oberlin Sidjabat Permatasari, Hanifah Pramudi, Ganjar Pratomo Setyadi Purba, Yanti Astrelina Purwandari, Wd. Vitha Purwo Handoko, Donatus Setyawan Purwo Haryono Radjali Amin Raharjo, Wijang W. Rahmadani Putri, Elvi Noveria Ramdhani, Destania Ayu Rangga Handika Rasiman Rici Kardo, Rici Rizki Indah Lestari Rodiansono Royani Dewi, Elisa Ruli Supriati, Ruli Sabaruddin Sandy Prasetyo Soeharsono SRI RAHAYU Sri Suwartini, Sri Sugiarti sugiyamin Sugiyamin Sukmaji Indro Cahyono, Sukmaji Indro Supriyanti, Dedeh Suryo Purwono Tasari Teguh Triyono Triyono Triyono Tukiyo Uswatul Chasanah, Uswatul Wahyu Purwo Raharjo Waradzi Mustakim Warniningsih Wega Trisunaryanti Wega Trisunaryanti Widya Multisari Wijang Wisnu Raharjo Wijaya, Surta Yudha Agung Pratama Zulfikar