Positron  

Yulia Putri Wulandari,Mohammad Syamsu Rosid

The shape of pores in sedimentary rocks is dependent on the geometric structure of the rock matrix grains. Carbonate rocks have more complex pore types compared to clastic due to the effects of diagenesis and the depositional environment. The study analyz... see more

Raihan Alfaridzi,Bintoro Siswo Nugroho,Yudi Rosandi

Using molecular dynamic simulation, we developed an algorithm to protonate the surface of an amorphous porous silica grain particle model and study its effect. In this work, the silica grain model can be used to study cosmic dust coagulation. The surface ... see more

Sutisna Sutisna,Ilma Eka Nur Rokhmawati,Misto Misto,Imam Rofi’i,Tri Mulyono,Siswanto Siswanto,Edy Supriyanto,Edy Wibowo

One effort to increase the photocatalytic activity of TiO2 is to immobilize it on the surface of the sorbent material. This study aims to produce TiO2-Activated Carbon (TiO2-AC) composites which have higher photocatalytic activity than TiO2, using a simpl... see more

Risky Martin Antosia,Hendra Hidayat Akbar,Nono Agus Santoso,Intan Andriani Putri,Bilal Al Farishi,Happy Christin Natalia

One of the geopark tourism areas in East Lampung Regency, "Gua Pandan," has run into rock subsidence on the surface. As part of the subsidence prevention, indirect electrical methods between resistivity and chargeability profiling were applied to identify... see more

Wipsar Sunu Brams Dwandaru,Abdul Rosyid Hidayatullah,Eka Sentia Ayu Listari,Deby Grace SL

Visible fingerprints (FPs) play a crucial role in forensic identification, and luminescent carbon nanodots (C-Dots) have shown promise in enhancing their visibility. However, the optimal concentration of C-Dots for effective coating remains largely unexpl... see more

Delovita Ginting,Tulus Na Duma,Nofia Rahmadani,Yola Suryani,Rismadani Haryanti

One of the components that play an important role in maintaining battery security is the separator. The separator plays a role in preventing short circuits due to direct exchange between the anode and cathode in the battery cell. To avoid leakage or short... see more

Lazuardi Umar,Vira Annisa Rosandi,Leonardus Riski Nainggolan,Rahmondia Nanda Setiadi,Tetty Marta Linda

Vitamin B1 (thiamine) plays an important role in various metabolic processes and is one of the main factors in the body's health. Thiamine excess and deficiency in the body might cause a variety of diseases such as shortness of breath, beriberi, and heart... see more

Didiek Sugandi,Deri Agustiawan,Ericco Wijayanto,Lo Mei Ly Vebriyanti,Gabriela Yenti Landang Panaya,Nelly Wahyuni

The increasing number of laundry businesses in Pontianak causes increased laundry waste, which is dangerous for health and the environment because anionic surfactants such as Linear Alkylbenzene Sulfonate (LAS) are hard degradable. Photocatalyst is a meth... see more

Nur Eviva,Anis Shofiyani,Endah Sayekti

Red mud is a bauxite industrial waste of reddish-brown mud with high alkalinity. Red mud has relatively high silica and alumina content, so it can be utilized as a raw material in the synthesis of zeolite. This study aims to synthesize high-purity NaP zeo... see more

Siti Fatimah,Juharni Juharni,Angraeni Sri Hanifa Wahyuni

The green synthesis of Fe3O4 nanoparticles based on natural sand as a liquid waste degrader has been conducted. Fe3O4 powder was obtained by separating natural sand using a permanent magnet through the electrocoagulation method with Mn doping and AC compo... see more