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All Journal JURNAL AKUNTANSI DAN AUDITING Jurnal Sains dan Teknologi KEUNIS Orbith : Majalah Ilmiah Pengembangan Rekayasa dan Sosial Monex: Journal of Accounting Research Ikonomika : Jurnal Ekonomi dan Bisnis Islam Jurnal Ilmiah Rekayasa Pertanian dan Biosistem MANAJERIAL Jurnal Agrotek UMMat Jutisi: Jurnal Ilmiah Teknik Informatika dan Sistem Informasi JURNAL AKTUAL AKUNTANSI KEUANGAN BISNIS TERAPAN (AKUNBISNIS) International Conference on Industrial Revolution for Polytechnic Education Andalasian International Journal of Applied Science, Engineering, and Technology Indonesian Journal of Business Analytics (IJBA) Eksergi: Jurnal Teknik Energi Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Medani : Jurnal Pengabdian Masyarakat Jurnal Pengabdian Masyarakat Bangsa Mutiara : Jurnal Ilmiah Multidisiplin Indonesia Jurnal Akuntansi, Keuangan, Perpajakan dan Tata Kelola Perusahaan Jurnal Pengabdian Masyarakat dan Riset Pendidikan Journal of Mechanical Engineering and Applied Technology Jurnal Polimesin Asian Journal of Management, Entrepreneurship and Social Science
Rani Raharjanti
Politeknik Negeri Semarang
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Solar Drying Technology: Current Research Trends and Future Perspectives Apriandi, Nanang; Raharjanti, Rani; An-nizami, Avicenna; Herlambang, Yusuf Dewantoro; Pambudi, Yoyok Dwi Setyo; Rozi, Khoiri; Negara, Komang Metty Trisna; Setyowati, Nur
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 4 No. 3 (2024): November 2024
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v4i3.193

Abstract

Solar drying technology has become a vital innovation for sustainable food preservation and renewable energy utilization, offering an energy-efficient alternative to conventional drying methods. This study provides a comprehensive bibliometric analysis of research trends, influential authors, key institutions, and geographical contributions in the field of solar drying technology from 2004 to 2024. We analyzed 108 relevant publications using the Scopus database and VOSviewer software, revealing a significant increase in research output since 2010, with a marked surge after 2016. India and China emerge as leading contributors, driven by their large agricultural sectors and favorable solar conditions. Key research efforts have focused on improving energy efficiency, optimizing drying processes, and preserving product quality. Despite these advancements, critical gaps remain, particularly in scaling solar drying systems and integrating hybrid technologies that combine solar energy with other renewable sources. This study highlights the importance of interdisciplinary collaboration to advance technological innovation and address challenges in food security and energy sustainability. Future research should focus on developing hybrid systems, finding better ways to store energy, and studying how solar drying affects the taste and nutritional value of food in order to make it more useful in a wider range of climates and farming situations. Keywords: Solar Drying Technology, Bibliometric Analysis, Renewable Energy, Hybrid Systems, and Food Preservation.
Solar Drying Technology: Current Research Trends and Future Perspectives Apriandi, Nanang; Raharjanti, Rani; An-nizami, Avicenna; Herlambang, Yusuf Dewantoro; Pambudi, Yoyok Dwi Setyo; Rozi, Khoiri; Negara, Komang Metty Trisna; Setyowati, Nur
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 4 No. 3 (2024): November 2024
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v4i3.193

Abstract

Solar drying technology has become a vital innovation for sustainable food preservation and renewable energy utilization, offering an energy-efficient alternative to conventional drying methods. This study provides a comprehensive bibliometric analysis of research trends, influential authors, key institutions, and geographical contributions in the field of solar drying technology from 2004 to 2024. We analyzed 108 relevant publications using the Scopus database and VOSviewer software, revealing a significant increase in research output since 2010, with a marked surge after 2016. India and China emerge as leading contributors, driven by their large agricultural sectors and favorable solar conditions. Key research efforts have focused on improving energy efficiency, optimizing drying processes, and preserving product quality. Despite these advancements, critical gaps remain, particularly in scaling solar drying systems and integrating hybrid technologies that combine solar energy with other renewable sources. This study highlights the importance of interdisciplinary collaboration to advance technological innovation and address challenges in food security and energy sustainability. Future research should focus on developing hybrid systems, finding better ways to store energy, and studying how solar drying affects the taste and nutritional value of food in order to make it more useful in a wider range of climates and farming situations. Keywords: Solar Drying Technology, Bibliometric Analysis, Renewable Energy, Hybrid Systems, and Food Preservation.
SOSIALISASI DAN PEMETAAN POTENSI BIOGAS BERBAHAN DASAR LIMBAH KOTORAN SAPI DI KELOMPOK TANI SUMBER REJEKI KOTA SEMARANG Apriandi, Nanang; Kristiawan, Timotius Anggit; Yanuar, Padang; Satito, Aryo; Setiyawan, Trio; Raharjanti, Rani
Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Vol. 4 No. 2 (2023): Vol. 4 No. 2 Oktober 2023
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/sitechmas.v4i2.4986

Abstract

Kegiatan sosialisasi dan pemetaan potensi pemanfaatan kembali limbah kotoran sapi yang dikonversi menjadi biogas pada Kelompok Tani Sumber Rejeki, Kota Semarang, selaku mitra kegiatan, sudah dilakukan. Metode kegiatan yang digunanakan adalah pendekatan Focus Group Discussion (FGD) dan Participatory Rural Appraisal (PRA) dengan menitikberatkan pada keterlibatan mitra. Hasilnya, potensi limbah dari kegiatan peternakan pada kelompok mitra dengan rata-rata jumlah ternak yang dimiliki sebanyak 14 ekor sapi dewasa, dapat menghasilkan 406 kg kotoran per hari dengan potensi slurry sebagai bahan baku utama pembuatan biogas sebesar 812 kg/hari. Kapasitas digester yang dibutuhkan untuk memaksimalkan potensi slurry tersebut adalah sebesar 15 m3 dengan potensi biogas yang dihasilkan sebesar 12,789 m3/hari. Desain digester yang ditawarkan kepada mitra yaitu sistem pengolahan yang terintegrasi yang mengadopsi dari Program Biogas Rumah (BIRU) dengan beberapa modifikasi yang mengintegrasikan proses pembuatan biogas dengan pembuatan puouk kompos.
Ownership on Islamic Economic Perspective and Director Ownership on Sharia Companies with Moderation Roles of Independent Commissioners Noval, Muhammad; Raharjanti, Rani; Ali, Musab A. M.
IKONOMIKA Vol 5, No 1 (2020)
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/febi.v5i2.6309

Abstract

This research aims to examine the ownership on Islamic economic and the ownership stock effect on firm performance and the moderating influence of independent commissioner on the connection between ownership stock and firm performance. Indicator of ownership stock studied was the ownership stock of the president director in the company. The firm performance studied by the calculation of Price per Earning Ratio. Then, the intended independent commissioners are the percentage of independent commissioners who are on the company's board of commissioners.This research uses qualitaitive method based on Islamic economic literature and quantitative methods basedon secondary data. Secondary data in this research are the financial report from firms that take the floor on Indonesia Stock Exchange (IDX). This investigation uses a population that is listed firms on Indonesian Sharia Stock Index (ISSI). Subsequently, the sample is filtered using purposive sampling techniques with the criteria of listed firms on Indonesia Stock Exchange and has the data needed in this investigation. As a result, the samples obtained were 296 companies. This research uses regression analysis with individual parameter significant test (t-test).Hypothesis testing results indicate that Sharia company ownershipis in accordance with Islamic economic perspective studies, and ownership stock with the indicator of ownership of the president director has an impact on firm performance with Price per Earning Ratio’s indicator, and independent commissioners based on the proportion of independent commissioners on the board of commissioners moderate the correlation between ownership stock and firm performance. Keywords: Ownership Stock, Firm Performance, and Independent Commissioners.
Penerapan Digital Printing dan Pemasaran Online pada Karangtaruna Bhakti Utama Lamperkidul Raharjanti, Rani; Sadida, Afiat; Murtini, Sri; Christina, Budhi Adhiani; Mardinawati, Mardinawati; Sarana, Sarana; Murtiasri, Eka; Ardiansah, Muhammad Noor; Hidayati, Ulfah; Suwondo, Agus; Mansur, Ahmad Wafa; Ayundyayasti, Prima; Permana, Rangga; Rosyadi, Humam
Medani : Jurnal Pengabdian Masyarakat Vol. 4 No. 1 (2025): April 2025
Publisher : Lembaga Riset Ilmiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59086/jpm.v4i1.1034

Abstract

Tujuan dari pengabdian masyarakat ini adalah untuk membantu mitra untuk memecahkan kendala dan permasalahan dalam proses produksi dan pemasaran. Karang Taruna "Bhakti Utomo" Desa LAMPERKIDUL merupakan salah satu Karangtaruna di daerah Lamper Kidul dengan 30 anggota dan bergerak di bidang Kerajinan Tangan, Sablon Kaos, Oleh-oleh Semarang. Sablon kaos belum memenuhi pangsa pasar karena masih banyak kekurangan, dan hasilnya kurang menarik. Masalah lainnya adalah kurangnya pengalaman dan pengetahuan tentang teknologi digital printing untuk sablon T-shirt yang semakin maju dan tidak lagi manual. Masih menggunakan alat sablon manual, dan belum memiliki media sosial sebagai pemasaran produk anak muda sebagai media untuk meningkatkan pendapatan anak muda Hasil pengabdian masyarakat ini adalah desain sablon kaos yang telah dirancang oleh tim pengabdian masyarakat dan media sosial untuk pemasaran online   The purpose of this community service is to help partners to solve obstacles and problems in the production and marketing process. Karang Taruna “Bhakti Utomo” LAMPERKIDUL Village is one of the Karangtaruna in the Lamper Kidul area with 30 members and is engaged in Handicraft, T-shirt Screen Printing, Semarang souvenirs. T-shirt screen printing has not met the market share because there are still many shortcomings, and the results are less attractive. Another problem is the lack of experience and knowledge about digital printing technology for T-shirt screen printing which is increasingly advanced and no longer manual. Still using manual screen printing tools, and do not yet have social media as marketing for youth products as a medium to increase youth income The results of this community service are t-shirt screen printing designs that have been designed by the community service team and social media for online marketing  
Produksi Biogas Dari Kotoran Sapi Menggunakan Digester Anaerobik Tipe Batch Skala Kecil: Pengaruh Hydraulic Retention Time (HRT) Terhadap Kualitas Biogas Nanang Apriandi; Suwarti, Suwarti; Widyaningsih, Wiwik Purwati; Raharjanti, Rani
JST (Jurnal Sains dan Teknologi) Vol. 12 No. 1 (2023): April
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jstundiksha.v12i1.57310

Abstract

Dalam merancang digester biogas skala besar dan beroperasi jangka panjang dengan ketersediaan bahan baku setiap hari, penting untuk mengetahui waktu retensi hidrolik (HRT) dari substrat guna mengoptimalkan proses dekomposisi dan mendapatkan kualitas biogas yang baik. Komposisi gas terutama metana (CH4) menjadi dasar penentuan kualitas biogas. Pendekatan eksperimental menggunakan digester anaerobik tipe batch berkapasitas 50 liter dilakukan untuk menginvestigasi pengaruh HRT pada proses dekomposisi anaerobik terhadap kualitas biogas. Campuran kotoran sapi dan air dengan perbandingan 1:1 dan 1:2 digunakan sebagai substrat. Selanjutnya, kondisi proses dan kualitas biogas dianalisis dan dievaluasi dengan variabel HRT 3, 7, 14, 21, dan 28 hari. Hasil penelitian menunjukkan bahwa kualitas biogas tertinggi diperoleh dari proses dekomposisi anaerobik dengan komposisi substrat 1:1 dan pada HRT 28 hari, dengan kandungan CH4 sebesar 62,23 %vol dan nilai kalor sebesar 21745,71 kJ/m3. Hasil investigasi ini dapat dijadikan acuan di dalam merancang digester biogas skala besar dan beroperasi jangka panjang untuk berbagai tipe digester yang berbeda. Semakin lama HRT substrat pada proses dekomposisi anaerobik di dalam digester, semakin tinggi persentase kandungan CH4 dalam biogas, dan semakin tinggi pula nilai kalornya.
The Newton Model for Seaweed Drying: An Investigation of a Cabinet Dryer Using Biomass Energy Zulhan Widya Baskara; Apriandi, Nanang; Herlambang, Yusuf Dewantoro; Khoryanton, Ampala; Safarudin, Yanuar Mahfudz; Widya Baskara, Zulhan; Raharjanti, Rani
Eksergi Vol. 19 No. 01 (2023): JANUARY 2023
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/eksergi.v19i01.4211

Abstract

This study investigates the viability of employing a cabinet-type dryer with a heat energy source derived from biomass combustion to dry Eucheuma sp. using Newton's model. In this investigation, seaweed was dried with air at a temperature of 55 °C. A reduction in water content of 8.1% was attained after six hours of drying. To make the data fit the suggested drying mathematical model, the data were examined and recorded. The model feasibility test shows that, with a coefficient of determination (R2) that is close to one and corrected at 0.9502, the Newton model can be used to predict the moisture content of dried seaweed after the drying process using a cabinet-type dryer with a source of heat energy from biomass combustion.
PEMBUATAN DAN UJI PERFORMA TERMAL ALAT PENGERING SKALA LABORATORIUM DENGAN PENAMBAHAN THERMAL ENERGY STORAGE (TES) BERBASIS PHASE CHANGE MATERIAL (PCM) Apriandi, Nanang; Herlambang, Yusuf Dewantoro; Negara, Komang Metty Trisna; Raharjanti, Rani
Journal of Mechanical Engineering and Applied Technology Vol. 2 No. 1 (2024): VOLUME 2 ISSUE 1 YEAR 2024 (MARCH 2024)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v2i1.5423

Abstract

Pengeringan merupakan salah satu metode pengawetan yang paling banyak digunakan untuk memperpanjang masa simpan produk pertanian, makanan, dan bahan lainnya. Penelitian ini bertujuan untuk merancang dan membangun alat pengering skala laboratorium yang inovatif dengan integrasi thermal energy storage (TES) berbasis phase change material (PCM) menggunakan paraffin wax sebagai media penyimpanan energi. Metode yang digunakan meliputi desain alat, perakitan, dan pengujian performa. Paraffin wax dipilih karena sifatnya yang mampu menyimpan dan melepaskan energi panas secara efisien pada rentang suhu pengeringan yang dibutuhkan. Penelitian ini secara khusus mengevaluasi kinerja termal dari alat pengering untuk mendapatkan karakteristik sistem berupa distribusi temperatur di ruang pengering, distribusi temperatur pada media TES, dan distribusi temperatur udara keluar alat pengering melalui cerobong. Hasil investigasi menunjukkan bahwa penambahan TES berbasis PCM paraffin wax mampu menjaga stabilitas temperatur di ruang pengering. Hal ini nantinya akan berdampak positif pada efisisensi sistem secara keseluruhan.
Pengembangan Keterampilan Warga Binaan Panti Pelayanan Sosial PGOT Mardi Utomo melalui Pendampingan Pembuatan Kue Pukis dan Perhitungan Harga Pokok : Penelitian Alvianita Gunawan Putri; M. Noor Ardiansah; Ulfah Hidayati; Eka Murtiasri; Sri Murtini; Muhammad Asrori; Rani Raharjanti; Novitasari Eviyanti; Moh. Haris; Ahmad Wafa Mansur
Jurnal Pengabdian Masyarakat dan Riset Pendidikan Vol. 4 No. 3 (2026): Jurnal Pengabdian Masyarakat dan Riset Pendidikan Volume 4 Nomor 3 (Januari 202
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jerkin.v4i3.5000

Abstract

The PGOT Mardi Utomo Social Service Center is a social rehabilitation institution for beggars, homeless people, and abandoned people that focuses on increasing independence through skills training, but still faces obstacles such as low motivation of inmates, limited facilities, lack of understanding of business management, and inaccurate calculation of cost of goods produced (HPP). This community service activity aims to improve the skills of inmates through mentoring in making pukis cakes and training in calculating HPP as the basis for a simple culinary business. The implementation method includes needs identification, technical training, learning the concept of HPP, entrepreneurial motivation, production practice, and evaluation. The results of the activity show a significant increase in pukis cake production skills and the ability of inmates to calculate HPP independently to determine a rational selling price. This program also increases entrepreneurial motivation and opens up opportunities for economic independence, making it effective as a model for sustainable social empowerment.
DO INVESTMENT DECISIONS MODERATE THE EFFECT OF CAPITAL STRUCTURE, PROFITABILITY, FIRM SIZE, AND DIVIDEND POLICY ON FIRM VALUE? EVIDENCE FROM IDX MINING COMPANIES Rani Raharjanti; Sahra Mawarseta; Sri Murtini; Mardinawati Mardinawati
Jurnal Akuntansi, Keuangan, Perpajakan dan Tata Kelola Perusahaan Vol. 3 No. 2 (2025): Desember
Publisher : Yayasan Nuraini Ibrahim Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70248/jakpt.v3i2.3137

Abstract

The mining sector plays a vital role in Indonesia’s national economy, making its financial performance an important subject for deeper analysis through multiple financial indicators. This study investigates the effects of capital structure, profitability, firm size, and dividend policy on firm value, with investment decisions introduced as a moderating variable. The sample consists of 26 mining companies listed on the Indonesia Stock Exchange during the 2021–2024 period, selected using purposive sampling, resulting in 104 firm-year observations. Data were analyzed using multiple linear regression and moderated regression analysis with SPSS version 26. The findings reveal that capital structure has no significant impact on firm value. In contrast, profitability exerts a significant positive effect, while firm size and dividend policy both show significant negative effects. Regarding moderation, investment decisions do not moderate the relationship between capital structure and firm value but negatively moderate the effect of profitability, strengthen the effect of firm size, and negatively moderate the effect of dividend policy. These results provide new insights into the dynamics of financial decision-making in Indonesia’s mining sector and highlight the nuanced role of investment choices in shaping firm value.
Co-Authors Abda Abda Afiat Sadida Afifa Pramesywari Agus Suwondo Ahmad Wafa Mansur Ali, Musab A. M. Alvianita Gunawan Putri An Nizhami, Avicenna Anhar Riza Antariksawan Ardiansah, M. Noor Aris Fiatno Ayundyayasti, Prima BERKAH FAJAR TAMTOMO KIONO Budhi Adhiani Christina, Budhi Adhiani Eka Murtiasri Eviyanti, Novitasari Fathin, Khusnun Fitriani, Hervina Ignatius Gunawan Widodo Jihan Rahmawati Khoiri Rozi Khoiri Rozi Khoirunnisa, Hilma Khoryanton, Ampala Khusna, Atina Nurul Komang Metty Trisna Negara M. Haris M. Noor Ardiansah Mansur, Ahmad Wafa Mardinawati Mardinawati Mardinawati, M. Mardinawati, Mardinawati Margana Margana Marliyati Marliyati Mochammad Fandy Pradana Moh. Haris Muhammad Asrori Muhammad Asrori Muhammad Noor Ardiansah Muhammad Noval Muhammad Noval Muhammad Yunus Mukhsinun Hadi Kusuma Musab A. M. Ali Nanang Apriandi Negara, Komang Metty Trisna Nurul Azmi Padang Yanuar Padang Yanuar Pambudi, Yoyok Dwi Setyo Permana, Rangga Prayitno Prayitno Prima Ayundyayasti Rachman, Iqo Yovie Rosyadi, Humam RR. Ella Evrita Hestiandari Sadida, Afiat Sahra Mawarseta Sarana Sarana Satito, Aryo Setiyawan, Trio Setyowati, Nur Setyowati, Nur Sofia Loren Butarbutar Sri Murtini sri murtini . Sumantri Hatmoko Susena Susena Susena, S. Suseno, Sigit Suwarti Suwarti Timotius Anggit Kristiawan Totok Prasetyo Totok Prasetyo Ulfah Hidayati Ulfah Hidayati Vivi Widya Larasati Wiwik Purwati Widyaningsih Yanuar Mahfudz Safarudin Yoyok Setiyo Pambudi Yusuf Dewantoro Herlambang Yusuf Dewantoro Herlambang Zulhan Widya Baskara