Explanipedia

Thickness analysis of activated carbon electrode of cocoa shell on electrochemical performance of supercapacitors Open

Yuli Yetri, Irsya Dunnas, Daisuke Tashima, Mulda Muldarisnur, Julsam , et al. · 2025

Activated carbon was successfully synthesized from cocoa shells with 0.4 M KOH activator with a specific surface area of 360.290 m²/g. This activated carbon will be used as a base material for supercapacitor electrodes. The manufacture of …

Synthesis and Characterization of Hydroxyapatite Derived from Pleco Fish (Hypostomus Plecostomus) Bone Waste via Calcination and Ball Milling for Biomedical Applications Open

Nurfitri Rahmi Sari, Andika Thoriq, Gunawarman Gunawarman, Is Prima Nanda, Ade Indra , et al. · 2025

Materials science Chemistry Engineering

Hydroxyapatite (HA), a calcium phosphate-based bioceramic, is widely recognized for its excellent biocompatibility and bioactivity, making it suitable for biomedical applications. This study aims to synthesize HA from waste bones of the pl…

SOSIALISASI MENINGKATKAN MINAT BACA ANAK di PESANTREN AL–HIDAYAH TARBIYAH ISLAMIAH MUARA LABUH BERSAMA TIM PENGABDIAN POLITEKNIK NEGERI PADANG Open

Jumyetti Jumyetti, Sir Anderson, Yazmendra Rosa, Mulyadi Mulyadi, Yuli Yetri · 2025

Psychology

Our nation's current low interest in reading has made the community outreach team at the Padang State Polytechnic feel called to do something to increase the nation's interest in reading. This community service activity was held at the Al-…

Study of The Influence of Extract Cocoa Pods (Theobroma Cacao) as a Preservative Ingredient on Mahoni Woods (Swietenia Mahogany) Through Cold Soaking on Mechanical Properties Open

Muh Anhar, Yusuf Yusuf, Asep Ruchiyat, Etri Suhelmidati, Satria Heryanto Putra , et al. · 2025

Chemistry Biology

An attempt has been made to extend the service life of mahogany wood (Swietenia mahogany) by preserving it. The purpose of this study was to determine the mechanical properties of mahogany wood after cold soaking with preservatives of coco…

RANCANG BANGUN MODEL PEMBANGKIT LISTRIK TENAGA MIKRO HIDRO (PLTMH) MENGGUNAKAN PADDLE BREAST WHEEL Open

Ichlas Nur, Wahmin Rais, Nota Effiandi, Aidil Zamri, Yuli Yetri · 2024

Computer science Engineering

The need for electrical energy is increasing along with technological advances. In addition to the large population in an area, the variable economic activity of the population, which continues to increase to meet their daily needs, also h…

Analisis Pengaruh Variasi Elektrolit H2SO4, KOH, dan Na2SO4 terhadap Kinerja Elektrokimia Superkapasitor berbasis Biomassa Kulit Kakao Open

Exaudi Pratama Rajagukguk, Widi Mulia Nasution, Mulda Muldarisnur, Yuli Yetri · 2024

Physics Chemistry

Utilization of cocoa pod waste (Theobroma cacao) as a supercapacitor carbon electrode through electrolyte optimisation was successfully conducted with 0.5M KOH chemical activator. Carbon production starts with slicing cocoa pods, sun dryin…

The Potential of Hydroxyapatite-Alumina Composites for Artificial Bone Implant Open

Yuli Yetri, Ikhsan Ikhsan, Jon Affi, Gunawarman Gunawarman, Yuli Panca Asmara · 2024

Materials science Medicine

The production of hydroxyapatite (HA) from bovine bone has been carried out, to which alumina (Al2O3) and ortho resin will be added to form HA-alumina composites. The aim of this research is to obtain HA-Alumina composites which can be use…

PARTISIPASI MASYARAKAT MEMBANGUN JEMBATAN GANTUNG BERSAMA TIM PENGABDIAN MASYARAKAT POLITEKNIK NEGERI PADANG di DESA BUMI AYU, KECAMATAN SANGIR, SOLOK SELATAN Open

Yuli Yetri, Rahmi Hidayati, Maimuzar Maimuzar, Hendra Hendra, Nofriadi Nofriadi · 2024

Art

Community service has been completed by a community service team from the Politeknik Negeri Padang (PNP) in South Solok Regency. The purpose of this community service is to help the community in the construction of a suspension bridge in t…

Adsorption Effect of Theobroma Cacao Extract On Steel Surface to Protect Corrosion Rate Open

Yuli Yetri, Apriska Apriska, Wan Norsani, Sukatik Sukatik, Rakiman Rakiman , et al. · 2024

Materials science Chemistry Engineering

Research has been carried out to slow down the corrosion rate of steel by using biomass waste inhibitors of cocoa pod extract (Theobroma cacao). Phase analysis that occurs with X-Ray Diffraction (XRD), and the Density Functional Theory (DF…

Pembuatan Cetakan Pellet Elektroda Super Kapasitor Untuk Penyimpan Energi Open

Yuli Yetri, Eka Sunitra, Ali Siddik, Rakiman Rakiman, Haris Haris · 2023

Materials science Engineering Chemistry

The design of a tool for printing supercapacitor electrodes has been completed. The basic material for the electrode is cocoa pod skin. The purpose of this research is to manufacture and assemble a laboratory-scale supercapacitor chip mold…

Modification of Steel Surface with Addition of Cocoa Fruit Pod Extract Inhibitor Using Electrodeposition Method Open

Yuli Yetri, Rakiman, Sukatik Sukatik, Maimuzar, Silva Azaria Mahaputri · 2023

Materials science Chemistry Physics

The steel surface modification has been carried out with the addition of an inhibitor of cocoa fruit pod extract with varying concentrations of 0.5%, 1%, 1.5%, 2.0% and 2.5%. The aim is to add inhibitors to improve the appearance, and to s…

PERBAIKAN FASILITAS DAN MANAJEMEN MESJID NURUL HIKMAH DESA BUMI AYU SOLOK SELATAN BERSAMA TIM PENGABDIAN KEPADA MASYARAKAT POLITEKNIK NEGERI PADANG Open

Yuli Yetri, Nasirwan Nasirwan, Rakiman Rakiman, Haris Haris, Saif Hadid Alkhairi · 2023

Business Sociology Psychology

To maximize the function of the mosque as a place of worship, a community service team has carried out together in the form of counseling and donations. This is done because mosques have a very strategic function in Islamic society, both a…

Effect of Electrolyte Concentration on Characteristics of Activated Carbon of Cocoa Peel Open

Yuli Yetri, Vikra Yudha Yolanda Afza, Julsam, Oktavianus Ganumba, Eka Sunitra · 2023

Materials science Chemistry

Cocoa peel activated carbon has been successfully synthesized with 0.3 M KOH activator and NaCl electrolyte as the base material for supercapacitor electrodes. Variations in the concentration of NaCl electrolyte used were 1 M, 2 M, and 3 M…

PENERAPAN TABUNG BAHAN BAKU DESTILASI MINYAK NILAM BERBAHAN STAINLESS STEEL PADA PENGHASIL MINYAK NILAM Open

Rina Rina, Yuli Yetri, Roni Kurniawan Putra, Adriansyah Adriansyah, Teguh Yaman Telaumbanua , et al. · 2023

Engineering Chemistry

The problem faced by partners today is the low technology used in the patchouli oil refining process. The distillation system equipment used is still simple, the tubes are made of used drums and are easy to rust. This service aims to make …

PENYULUHAN PENGELOLAAN SAMPAH PLASTIK PADA BANK SAMPAH SAKINAH PADANG PANJANG Open

Yuli Yetri, Jumyetti Jumyetti, Rahmi Hidayati, Rina Rina, Januar Putra · 2023

Business Engineering Political science

Community service has been carried out by a team from the Padang State Polytechnic. This activity was carried out due to concerns about the large amount of inorganic household waste that had accumulated in the Guguak Malintang sub-district…

Improvement in Bioactivity Properties of Hydroxyapatite Coated Ti-6Al-4V ELI with Addition of Zirconium Oxide for Orthopaedic Implant Open

Sanny Ardhy, Gunawarman Gunawarman, Jon Affi, Yuli Yetri · 2023

Materials science Chemistry Medicine

One of factor causing the failure of Ti-6Al-4V Extra Low Interstitial (ELI)-based material implants, does not have bioactive properties in the implantation process, thus not supporting the osseointegration process in the body. For this rea…

A Corrosion Inhibition through the Adsorption of Cacao (Theobroma cacao) Peels Extract on Steel Surfaces: Experimental and DFT Results Open

Apriska Prameswari, Dahyunir Dahlan, Yuli Yetri, Imelda Imelda · 2022

Materials science Chemistry Mathematics

Steel surface coating has been carried out using the immersion method in an inhibitor of cacao (Theobroma cacao) peel extract for 24, 72, 120, and 168 hours. The corrosion treatment was performed using HCl with different immersion time of …

Improving the Corrosion Resistance of TNTZ in Hanks’ Solution after Thermomechanical Treatment Open

Sir Anderson, Jon Affi, Yuli Yetri, Mitsuo Niinomi, Toshikazu Akahori , et al. · 2022

Materials science Physics

Ti-29Nb-13Ta-4.6Zr (TNTZ) is a new titanium alloy potentially to be used as bone implant material because of its advantages in terms of strength, ductility, non-toxicity, corrosion resistance, and biocompatibility. Its mechanical propertie…

Addition of Zirconium Oxide for Reduction of Hydroxyapatite Layer Cracks in Ti-6Al-4V ELI Implant Materials for Improved Osseointegration Open

Sanny Ardhy, Gunawarman Gunawarman, Jon Affi, Yuli Yetri · 2022

Materials science Medicine Mathematics

The hydroxyapatite (HA) layer on the surface of the implant material tends to crack during the sintering process for layer densification. This causes the process of implant union with bone (osseointegration) does not function perfectly in …

PERANCANGAN MODIFIKASI MESIN BENDING ROTARY BAJA APLIKASI STAND POT BUNGA Open

Ruzita Sumiati, Yuli Yetri, Fardinal Fardinal, Hamzah Muhammad Mardi Putra · 2022

Engineering Materials science Mathematics

Plants grown in pots continue to grow year after year. A flower pot support or flower pot stand is required to add aesthetic value and save space. The purpose of this research is to develop a steel rotary bending machine design for flower …

Perancangan Mesin Pencuci Karpet Menggunakan Tabung Cairan Deterjen Open

Anissa Vivia Fidela, Dandi Ilham, Haris Haris, Ruzita Sumiati, Yuliarman Yuliarman , et al. · 2022

Engineering

Carpet washer is a machine that is used to help complete work in the laundry industry. By using this carpet cleaning machine, cleaning carpets is fast and easy. The purpose of designing this carpet washing machine is a form of innovation a…

Synthesis of Supercapacitor from Cocoa Fruit Peel Activated Carbon for Energy Storage Open

Rahma Fikri Nuradi, Mulda Muldarisnur, Yuli Yetri · 2022

Materials science Chemistry Engineering

The supercapacitor electrode has been synthesized using activated carbon from cocoa pods. Activated carbon was prepared by first drying the raw materials under the sunlight and followed by oven drying, pre-carbonization, milling, sieving, …

Disain Mesin Pengaduk Pakan Puyuh Yang Dilengkapi Dengan Komponen Penyemprot Cairan Fermentasi Open

Ruzita Sumiati, Fahri Reza, Nandi Pinto, Adriansyah Adriansyah, Yuli Yetri · 2022

Mathematics Materials science Chemistry

This study was carried out to deal with reducing feed cost and provide high quality poultry feed for the local breed of quail Â through the provision of feed mixer machines equipped with fermentation equipment. Â Mixing feed poultry using …

WORKSHOP UNTUK PEMUDA PUTUS SEKOLAH DI KELURAHAN LAMBUNG BUKIT KECAMATAN PAUH PADANG DALAM BIDANG PENGELASAN Open

Nota Effiandi, Mulyadi Mulyadi, Fardinal Fardinal, Bukhari Bukhari, Alfian Alfian , et al. · 2022

Engineering

SMAW 2F welding training has been carried out at the Politeknik Negeri Padang (PNP) for youth from the Lambung Bukit sub-district, Pauh sub-district, Padang city in order to carry out the Tri Dharma of Higher Education. The SMAW 2F welding…

Modifikasi Mesin Pengupas Kulit Pinang Kering Open

Fathir Alqodri, Ruzita Sumiati, Rakiman Rakiman, Yuli Yetri, Desmarita Leni · 2021

Engineering Computer science

Due to the weaknesses of some existing areca peelers, some modifications were made. Modifications were made to the gear stripper, the addition of the inlet funnel, the gear stripper cover, and the exit funnel. The purpose of this modificat…

Effect of Thermomechanical Treatment on Mechanical Properties and Microstructure of Titanium Alloy Ti-6AL-4V ELI for Orthopedic Applications Open

Sir Anderson, Fernando Erit, Jon Affi, Yuli Yetri, Gunawarman Gunawarman · 2021

Materials science Physics

Traffic accidents and osteoporosis significantly contribute to the incidence of fractures in Indonesia, increasing the need for orthopedic implant materials, such as titanium alloy Ti-6Al-4V ELI, which has good biocompatibility and availab…

Potential Activated Carbon of Theobroma cacao L. Shell for Pool Water Purification in Politeknik Negeri Padang Open

Yuli Yetri · 2021

Chemistry Materials science Environmental science

Research has been carried out to improve the quality of the yellow pool water. The water is used as a source of clean water for the academics of the Politeknik Negeri Padang, so it needs to be improved in accordance with the quality standa…

RANCANG BANGUN MESIN PULPER KOPI MENGGUNAKAN PENGGERAK MOTOR LISTRIK Open

Tri Ego Wiranata, Ruzita Sumiati, Rakiman Rakiman, Yuli Yetri · 2021

Computer science Engineering

Design and manufacture of coffee pulper machines have been carried out with the aim of completing the needs of the coffee farmer groups when harvesting in the Kayu Aro area, Kerinci. The steps in designing and manufacturing a coffee pulper…

RANCANG BANGUN MESIN PULPER KOPI MENGGUNAKAN PENGGERAK MOTOR LISTRIK Open

Tri Ego Wiranata, Ruzita Sumiati, Rakiman, Yuli Yetri · 2021

Computer science

Design and manufacture of coffee pulper machines have been carried out with the aim of completing the needs of the coffee farmer groups when harvesting in the Kayu Aro area, Kerinci. The steps in designing and manufacturing a coffee pulper…

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