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All Journal Jurnal Rekayasa Proses PROSIDING SEMINAR NASIONAL Reaktor International Journal of Renewable Energy Development TEKNIK METANA JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Bahan Alam Terbarukan Seminar Nasional Teknik Kimia Kejuangan Jurnal Rekayasa Mesin Panrita Abdi - Jurnal Pengabdian pada Masyarakat Emerging Science Journal Communications in Science and Technology Jurnal Rekayasa Proses Jurnal Inovasi Teknik Kimia ASEAN Journal of Chemical Engineering Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Warta Perkaretan Jurnal Profesi Insinyur Indonesia International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Bahan Alam Terbarukan
Andri Cahyo Kumoro
Department Of Chemical Engineering, Faculty Of Engineering, Diponegoro University
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Studi Pengaruh Penambahan Komposisi Nano Hidroksiapatit pada Campuran Polylactide dan Poly Ɛ-Caprolactone terhadap Laju Degradasi Fiksasi Internal Pelat Tulang Solechan, Solechan; Andri Cahyo Kumoro; Sumardi Sumardi; Agus Suprihanto; Sulardjaka
Jurnal Rekayasa Mesin Vol. 20 No. 1 (2025): Volume 20, Nomor 1, April 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i1.6070

Abstract

Pemulihan patah tulang menggunakan fiksasi internal pelat yang berfungsi mempertahankan pengurangan retak selama penyembuhan tulang. Fiksasi internal pelat direkomendasikan bersifat biodegradasi secara biologis yang terbuat dari biokomposit polylactide/poly ɛ-caprolactone/nano hidroksiapatit (PLA/PCL/nHA). Material ini memiliki kekuatan mekanik tinggi, namun susah mengontrol waktu laju degradasi. Tujuan penelitian ini menciptakan fiksasi internal pelat dari biokomposit PLA/PCL/nHA dengan laju degradasi dapat diprediksi. Metode pembuatan spesimen dengan Cold Isostatic Pressing (CIP) dengan variasi penambahan prosentase komposisi nHA. Tekanan kompaksi 40 MPa, temperatur sintering 150oC dan waktu penahanan 3 jam. Bertambahnya komposisi nHA mempercepat laju degradasi dan hilangnya berat spesimen. Penambahan komposisi nHA semakin besar untuk erosi permukaan semakin tinggi. Hasil ini untuk rencana implementasi spesimen pada tingkatan umur pasien. Spesimen penambahan 10 wt% nHA untuk pasien diatas umur 50 tahun atau lansia. Spesimen penambahan 20 wt% nHA untuk pasien dewasa, sedangkan spesimen penambahan 30 wt% nHA untuk pasien bayi dan anak-anak.
A Brief Overview of Corrosion Prevention and Inhibition: Past, Current and Future Technologies Ahmad - Fauzan; Andri Cahyo Kumoro; Aprilina Purbasari; Kharis Yohan Abidin
Reaktor Volume 25 No.3 December 2025
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.25.3.109-115

Abstract

Corrosion is a process that degrades metal-based materials as a result of chemical reactions with their surrounding environment. For that reason, it causes serious problems across various industries, namely reduced material quality, increased maintenance costs, and extensive safety concerns. This paper presents a concise overview of corrosion prevention and inhibition methods, focusing on key strategies, such as material selection and the use of protective coatings, cathodic protection, and corrosion inhibitors. Furthermore, nano coatings, eco-friendly inhibitors, smart materials, corrosion modelling, and self-healing materials are also discussed as part of current advancements. In-depth understanding and appropriate implementation of these suggested methods are essential for extending material lifespan and improving operational efficiency of the overall industrial systems.            
EXTRACTION OF HERBAL COMPONENTS – THE CASE FOR SUPERCRITICAL FLUID EXTRACTION Andri Cahyo Kumoro; Masitah Hasan
TEKNIK Vol 29, No 3 (2008)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (200.948 KB) | DOI: 10.14710/teknik.v29i3.1945

Abstract

Malaysia is rich in heritage of sources for herbs and medicinal plants. The increasing public awareness ofthe health, environment and safety hazards associated with the use of organic solvents in herbalsprocessing and the possible solvent contamination of the final products have pointed out the need for thedevelopment of new technologies for the processing of medicinal products. This becomes the challenge forthe application of supercritical fluid extraction to enhance the economic value of Malaysian herbs.Therefore, the development of affordable, high-capacity, continuous-feed supercritical extractors inconjunction with research demonstrating its effectiveness and advantages over conventional techniquesshould be seriously taken as a consideration.
Co-Authors . Widayat Adi Cifriadi Adi Cifriadi, Adi Agus Suprihanto Ahmad - Fauzan Aji Prasetyaningrum Alfariji, Moh Ana Farida Aprilina Purbasari Arkie Septiana A. Arkie Septiana A. Aryanti, Nita Asep Muhamad Samsudin, Asep Muhamad Asron Ferdian Falaah Asron Ferdian Falaah, Asron Ferdian Avriliana Dewi A. Bakti Jos Bakti Jos Budiyono Budiyono C Sri Budiyati Catarina Sri Budiyati Catarina Sri Budiyati Catarina Sri Budiyati Cindi Yasintasia Dessy Ariyanti Diah Permata Wijayanti Diah Susetyo Retnowati Didi Dwi Anggoro Dwi Haryanti Evi Ristanti R F Widhi Mahatmanti Ferry Hermawan Fitra Pradhita Frans Arienata H. Frans Arienata H. H Hadiyanto H. Hargono Hacker, Viktor Hargono . Hargono Hargono Hargono Hargono Kharis Yohan Abidin Kristinah Haryani Kurniawan, Tonni Agustiono Laeli Kurniasari M. Djaeni Maharani Ratridewi Marcelinus Christwardana Margaretha Praba Aulia Marissa Widiyanti Masitah Hasan Misbahudin Alhanif Moh Djaeni Monica Setiono H. Muhammad Haqqiyuddin Robbani Nafiunisa, Aininu Nasher, Kharissa Nor Basid Adiwibawa Prasetya Nur Rokhati Nurul Aini Pamungkas, Prihantoro Pandapotan, Boris Poltak Putra, Ade Septia Ratnawati Ratnawati Retno Wulandari Riris Yuliana Y.S. Rizka Amalia Rizka Amalia Rizka Amalia Roschger, Michaela Setia Budi Sasongko Silviana Silviana Sofiah Sofiah Sri Sinto Dewi Sulardjaka Sumardi Sumardi Tutuk Djoko Kusworo Utomo, Dani Puji Wahyono, Yoyon Wahyudi, Dhiky Wardhani, Dyah Hesti Wikanastri Hersoelistyorini Wilis Ari Setyati Yuni Susanti, Devi Zahra, Nurul Afifah Zaim, Hanif Fawwaz