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All Journal Jurnal Rekayasa Proses International Journal of Integrated Health Sciences TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal KALAM Agrointek Rekayasa Mesin Jurnal Keteknikan Pertanian Tropis dan Biosistem Jurnal Teknologi Pertanian Habitat AGRIVITA, Journal of Agricultural Science Berkala Ilmu Kesehatan Kulit dan Kelamin JURNAL PENGABDIAN KEPADA MASYARAKAT MNJ (Malang Neurology Journal) Jurnal Ilmiah Rekayasa Pertanian dan Biosistem ALCHEMY Jurnal Penelitian Kimia LUGATUNA : Jurnal Prodi PBA Jurnal Rekayasa Proses Jurnal Teknologi Pertanian JIAI (Jurnal Ilmiah Akuntansi Indonesia) Advances in Food Science, Sustainable Agriculture and Agroindustrial Engineering (AFSSAAE) Jurnal Darma Agung BISNIS & BIROKRASI: Jurnal Ilmu Administrasi dan Organisasi ETNIK : Jurnal Ekonomi dan Teknik PHARMACOLOGY, MEDICAL REPORTS, ORTHOPEDIC, AND ILLNESS DETAILS (COMORBID) Cermin Dunia Kedokteran Jurnal Ilmu Manajemen Advantage Assets : Jurnal Ilmiah Ilmu Akuntansi, Keuangan dan Pajak Jurnal Abdi Panca Marga Jurnal Neuroanestesi Indonesia Jurnal AGRISEP: Kajian Masalah Sosial Ekonomi Pertanian dan Agribisnis Jurnal Staika: Jurnal Penelitian dan Pendidikan Jurnal Ekonomi dan Pembangunan Indonesia Amicus Curiae International Journal of Accounting and Management Research (IJAMR) Jurnal Rekayasa Proses JURNAL REKAYASA KIMIA & LINGKUNGAN
Yusuf Wibisono
Universitas Brawijaya
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Dampak Krisis Ekonomi terhadap Distribusi Pendapatan di Indonesia: Analisa SNSE Indonesia 1995 dan 1998 Wibisono, Yusuf
Jurnal Ekonomi dan Pembangunan Indonesia Vol. 4, No. 1
Publisher : UI Scholars Hub

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This paper examines the income distributional impact of the 1997s economic crisis that hit Indonesia using Social Accounting Matrix data for 1995 and 1998. Relying on a comparison of the distribution before and after crisis, the study suggests three main findings based on multiplier analysis. First, poor households have been harder hit by crisis than rich households. Second, there are indication that crisis making income transfer likely to occurs from consumer to producer. Third, it is hard to eliminate disparity in income distribution relying only on market mechanism. From impact analysis we obtain the result for policy recommendation. Agriculture price support policy tend to biased to rural rich households, while export promotion policy biased to urban rich households. Direct income transfers to poor household and income redistribution policy seems to be the best policy for improving the distribution of income after crisis.
Konvergensi di Indonesia, Beberapa Temuan Awal dan Implikasinya Wibisono, Yusuf
Jurnal Ekonomi dan Pembangunan Indonesia Vol. 3, No. 2
Publisher : UI Scholars Hub

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Recently convergence of regional per capita income has been a frequent object of regional studies as well as the case of Indonesia. However, different methods often yield different results therefore we try to choose the appropriate methods. Rather o-convergence, we use Theil index to analyze regional disparity and found that regional convergence in Indonesia does not appear to be a simple monotonic process, but seems to vary over time -and hence requires explanation. From here, we suggest that the use of long-term interval in regression of β convergence analysis will destroy the relationship among variables. The use of least square methods only suitable for absolute p-convergence analysis. We conclude that the most appropriate methods for conditional β convergence are instrumental methods. As an alternative one, we suggest panel- data methods. We found that the convergence rate in Indonesia is slow at 1,59 percent per year over 1975-2000. With conditional convergence analysis, we found that the difference on growth rate can be explained systematically by a set of explanatory variables. The inclusion of these variables makes the convergence rate become faster which is 3,91 percent per year. Most of these variables are under controlled by government. In summary, we conclude that government policies have significant influence for rapid and sustainable regional economic growth.
Determinan Pertumbuhan Ekonomi Regional: Studi Empiris Antar Propinsi di Indonesia Wibisono, Yusuf
Jurnal Ekonomi dan Pembangunan Indonesia Vol. 1, No. 2
Publisher : UI Scholars Hub

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COMPARATIVE TECHNO-ECONOMIC AND CARBON EMISSIONS ASSASEMENT OF BIOETHANOL AND BIOGAS PRODUCTION FROM Spirogyra sp. : A PROCESS SIMULATION STUDY. Maharani, Nur Sista; Nugroho, Wahyunanto Agung; Wibisono, Yusuf
Jurnal Teknologi Pertanian Vol. 27 No. 1 (2026)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtp.2026.027.01.6

Abstract

The production of renewable energy from microalgal biomass offers a promising pathway to mitigate greenhouse gas emissions. This study compares the technical performance, economic feasibility, and carbon emissions of bioethanol and biogas production from Spirogyra sp. using SuperPro Designer 10.7. The results show that the technical performance is highly dependent on process configurations. The best-performing bioethanol scenario (E3-2: flotation–continuous fermentation) produced 537.37 kg/batch with an energy consumption of 41.81 MJ/kg . In comparison, the optimal biogas scenario (B1-1: mesophilic digestion–water scrubbing) yielded 1,026.56 kg/batch with a lower energy consumption of 7,614 MJ/kg . Techno-economic analysis revealed that all scenarios are currently economically unviable at the simulated scale due to negative Net Present Values (NPV < 0), despite some scenarios exhibiting positive Return on Investment (ROI). Biogas production demonstrated higher energy efficiency, while bioethanol offered a cleaner emission profile. An integrated biorefinery approach is recommended to improve overall economic viability and biomass conversion efficiency.
Sintesis dan Karakterisasi Membran Selulosa Asetat dengan Penambahan Antibiofouling Alami Ekstrak Bawang Putih Dikianur Alvianto; Fara Aulia Agustin Nurhadi; Angky Wahyu Putranto; Bambang Dwi Argo; Mochammad Bagus Hermanto; Yusuf Wibisono
ALCHEMY Jurnal Penelitian Kimia Vol 18, No 2 (2022): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.18.2.57199.193-204

Abstract

Teknologi membran merupakan teknologi yang dapat memisahkan dua fasa (permeat dan umpan). Kendala dalam teknologi membran yaitu bahan yang terkandung dalam umpan dan mengakibatkan terjadinya fouling (penutupan pori). Salah satu alternatif untuk mengurangi fouling yaitu menambahkan zat antibiofouling pada membran. Bahan yang dapat digunakan sebagai antibiofoulan alami adalah ekstrak bawang putih yang memiliki sifat antibakteri. Penelitian ini bertujuan untuk menganalisis pengaruh penambahan ekstrak bawang putih terhadap perbaikan karakteristik membran (ketebalan, kuat tarik, elastisitas), fluks air bersih, dan sifat antibiofouling pada bakteri Bacillus subtilis. Membran selulosa asetat dibuat dengan menggunakan metode inversi fasa dan pelarut dimetilformamida. Penambahan ekstrak bawang putih pada pembuatan membran selulosa asetat memiliki konsentrasi masing-masing sebesar 0,25% b/v (0,01 g), 0,5% b/v (0,02 g), 0,75% b/v (0,03 g), dan 0% b/v (kontrol) dengan ketebalan 0,3 mm. Hasil yang optimum diperoleh untuk membran dengan konsentrasi 0,5 % b/v yang menghasilkan pengujian kuat tarik sebesar 0,977 N/mm2 dan untuk membrane dengan konsentrasi 0,25% b/v yang memberikan elastistas pertambahan panjang sebesar 12,22%. Sifat antibakteri membran dengan penambahan ekstrak bawang putih ditunjukkan dengan berkurangnya penempelan bakteri Bacillus subtilis pada permukaan membran sebesar 41,5% – 87,7% area.Synthesis and Characterization of Cellulose Acetate Membrane with The Addition of Natural Antibiofouling Garlic Extract. Membrane technology is a technology that can separate two phases (permeate and feed). The main problem in membrane technology is the material contained in the feed, which causes fouling (pore closure). An alternative to reducing fouling is by adding anti-biofouling substances into the membrane. The material that can be used as a natural anti-biofoulant is garlic extract which has antibacterial properties. This study aimed to analyze the effect of adding garlic extract on the improvement of membrane characteristics (thickness, tensile strength, elasticity), clean water flux, and anti-biofouling properties of Bacillus subtilis bacteria. The cellulose acetate membrane was synthesized using dimethylformamide as solvent through the phase inversion method. The addition of garlic extract in the manufacture of cellulose acetate membranes had concentrations of 0.25% w/v (0.01 g), 0.5% w/v (0.02 g), 0.75% w/v (0.03 g), and 0% w/v (control) with a thickness of 0.3 mm. The optimum results were obtained for the membrane with a concentration of 0.5% w/v, which resulted in the tensile strength test of 0.977 N/mm2, and the membrane with a concentration of 0.25% w/v, which resulted in an elongation elasticity of 12.22%. The antibacterial properties of membranes with the addition of garlic extract were indicated by the adhesion reduction of Bacillus subtilis bacteria on the membrane surface by 41.5% – 87.7% area.
Co-Authors Addieny Sugesti Afif Nurul Hidayati, Afif Nurul Agung Sukoyo Agus Salim ahmad rizal Ahmad Rizal Ganiem, Ahmad Rizal Ahyuni, Putri Khumairotul Aih Cahyani Alfisya, Lailia Alvianto, Dikianur Amanda Izzah Aulia Anam Ong Anang Lastriyanto Andrianto Ansari Angky Wahyu Putranto Ary Mustofa Ahmad Ashried Faradilla Astindari Astindari, Astindari Bambang Dwi Argo Bambang Susilo Bayu Dwi Apri Nugroho Berliana, Sobaryati Cep Juli Chusnul Arif Cita Rosita Sigit Prakoeswa Dian Savitri Dina Wahyu Indriani Dwi Murtiastutik Esti Hendradi Evy Ervianti Fara Aulia Agustin Nurhadi Faradilla, Ashried Farida Rahayu Fetri Setyo Liyundira Frilantika Kusuma Wardani G. Gunawan Gunadharma, Suryani Gunomo Djoyowasito Handono, Setiyo Yuli Harahap, Nur Anisah Rizky Heru Susetyo Hidayat, Faqih Ibrahim Maina Idriss Imam Santoso Indah Mustika Sakti INDROPO AGUSNI Iqbal Shalahuddin Irawati, Maghfira Selia Irnia Nurika Isnaini Puspitasari Izza, Ni'matul Izza, Sylvia Ni’matul Khafizh Rosyidi La Choviya Hawa Lisda Amalia Maharani, Nur Sista Maharsih, Inggit Kresna Manalu, Haposan Vincentius Mansur, Sobaryati Maylita Sari, Maylita Md Rezali, Khairil Anas Mifzal, Adib Maula Mochamad Bagus Hermanto Muchnuria Rachmawati Mudhofar, Muhammad Mufidah, Elya Muhafidzah, Novi Fatni Muhamad Amar Nadhif Muhammad Roil Bilad Muhammad, Defghi Arsy Muslimin Muslimin Nafi'ah, Riris Waladatun NANI HANIFAH Niken Dieni Pramesi Novantia Pusputasari Noviansyah Rizal Nugraha Hermawan, Asep Nur Hidayat Nur Kholis Nurul Fadillah Nurwindi, Linda Luvi Panggulu Ahmad Ramadhani Utoro Panggulu Ahmad Utoro Pepy Dwi Endraswari, Pepy Dwi Pranggono, Emmy Hermiyanti Pratama, Andhika Putra Agus Rahmadewi Rahmadewi Raka Ariwidyanata Ramdan Panigoro Riski Apriady, Adhitya Rohma, Novita Ainur Sabrina Sunyoto, Nimas Mayang Saifullah, Jefri Salsabila, Hanna Syakira Samsuranto, Samsuranto Sandra Sandra Sandra Sandra Sawitri Sawitri SEPTIANA SEPTIANA Septiani, Veria Shinta Rosalia Dewi Shinta Rosalia Dewi, Shinta Rosalia Sholihun, M. Siti Asmaniyah Mardiyani Siuliyanty, Siuliyanty Sobaryati, Sobaryati Sri Suhartini Sukoyo, Agung Sumardi Hadi Sumarlan Tengku Riza Zarzani N Trislawati, Cristina Uni Gamayani, Uni Utoro, Panggulu Ahmad Veliska, Audrya Nasywa Vibi Rafianto Wahyunanto Agung Nugroho Wahyunanto Agung Nugroho Wardoyo, Chandra Calista Wilujeng, Rohmi Nadi Yusron Sugiarto Yusuf Hendrawan Zulfa Musyaffa, Amirah