Effects of electrolyte solution (i.e., KOH, NaOH, NaCl, and HCl) with various concentrations (from 0 to 0.71 M) on corrosion mechanical properties the copper alloys were investigated. Experimental results showed that increases in concentration electrolytes allowed faster process. However, too high has no further impacts profile due existence passivity phenomena surface material, preventing material get more corroded. Acidic (HCl) salt (NaCl) gave compared alkaline NaOH KOH) since acidic ions...

Microactuators play a vital role in several microelectromechanical systems (MEMS) that generate forces or deflections necessary to accomplish functions such as scanning, tuning, manipulation, delivery. Utilizing ferrite magnetic core has shown the potential enhance deflection of microactuator. However, previous study presented complex fabrication method with high power consumption unsuitable for micropump application. Herewith, we report impact length on generated by microactuator simple...

The study examines the effect of chamber size, Microbial Fuel Cell (MFC) arrangement, environmental conditions on voltage production, and influence connecting Power Management System (PMS) with MFC. A 6-unit single-chamber MFC device was built using soil as a catalyst coconut leaves substrate. It then connected to PMS. showed that 350 ml unit arranged in series produced greater 457 mV compared 700 container. smaller integrated PMS consisting charge pump, DC-DC boost converter, Maximum Point...

Introduction/Main Objectives: This research aims to conduct a preliminary study into the use of LLMs for extracting information fill out questionnaires in survey interviews. Background Problems: BPS-Statistics Indonesia used paper-based interviews and is recently utilizing Computer Assisted Personal Interviewing (CAPI) method. However, CAPI method has some drawbacks. Enumerators must input data device, which can be burdensome prone errors. Novelty: uses large language model (LLM) extract...

Seni berbasis agama, salah satunya seni kaligrafi Arab, semakin hari tidak diminati oleh masyarakat, sehingga ini memiliki peran penting untuk ditingkatkan dan dikembangkan, khususnya di dunia pendidikan. Untuk itu, pengabdian bertujuan meningkatkan kualitas kreativitas penulisan lukis Arab bagi anak-anak usia pendidikan dasar Koripan 1 Dlingo Bantul Yogyakarta. Pengabdi melakukan beberapa langkah dalam mengimplementasikan pelatihan ini. Metode yang digunakan pengabdi adalah metode ceramah,...

Perovskite solar cells (PSC) have become a growing research interest due to their flexibility, attractive properties, and low production cost. However, the thin-film structure of PSC often results in not fully absorbed incident light by active layer, which is crucial determine efficiency. Thus, fabrication an layer with unique nanostructures used enhance absorption general Using theoretical simulation based-on Finite-Difference Time-Domain (FDTD) technique, this work demonstrates successful...

Battery pack used in electrical vehicles (EVs) have developed fastly nowadays and are important due to its capability stores electric charge. However, it is still found that there an voltage fluctuations sudden load changes or faults the power system. To overcome this problem, conventional strategy focuses on using stabilizer with inductor-capacitor resonant circuits, leaving problem of capacitors at cryogenic temperatures. Herewith, we design a vehicle automatic (VAVS) operating room...

Constructing student’s scientific literacy is still a challenge for the developing country. PISA 2015 report on showed that Indonesia was positioned at 62th out of 70 countries. According to this result, students are only able explain simple science phenomenon because some learning activities have not followed good inquiry as fundamental aspect nature science. To overcome problem, stated teachers suggested design well-structured laboratory make actual concepts and ideas, help connection...

In this paper, we determine the optical refractive indices of different molarities glucose using nano-laminated gold/chromium (Au-Cr) thin film via Kretschmann-based Surface Plasmon Resonance (K-SPR) sensing with angular interrogation.The Au-Cr K-SPR sensor detects presence in low-and high-concentration 4-12 mmol/L and 55-277 mmol/L, respectively, under exposure 670 nm 785 wavelengths.The experimental results showed that minimum limit detection (LOD) is 4 sensitivities are average 3.41 o /M...

Surface plasmon resonance (SPR) is an optical-based detection technique that of great interest in research because its rapid and label-free features. Current SPR sensor development focuses on modifying the sensing surface for maximum bioreceptor target immobilization. In this research, we proposed with Kretschmann configuration modified by adding immobilization layers using a few MXene (Ti3C2T2). alternative two-dimensional material suitable sensors it has termination (T2) which active to...

Abstract Turbidity has an indication that the liquid been contaminated. In testing process, turbidity in water can only be measured by sampling. To able to maintain quality of water, required a tool monitor and measure level real time. sensor SEN0189 is works measuring amount light from infrared led into phototransistor will produce output voltage on sensor. The study was conducted characterize ability sensors detecting turbidity. method used test using sediment soil filtered with diameter...

Abstract Critical thinking is one of the essential skills 21st century learning. Therefore, students are required to have these be applied in physics The study aims measure critical on Temperature and Heat. Participants this 29 11th grade (10 males 19 females) city Bandung. instruments used five essay questions with different indicators. results show that average value obtained 31 less categories. conclusion, students’ Heat still less. Thus, there a need for development learning process improve

This paper aims to know the influence of implementation ILD conceptual change oriented (ILD-CC) toward decreasing quantity students that misconception on Newton's First Law. The Law misconceptions separated into five sub-misconceptions. research is a quantitative with one group pretest-posttest design. samples this were 32 9th grade junior high school in Pandeglang, Banten, Indonesia. diagnostic test multiple-choice form three-tier format. result study found there was largest percentage...

In the third generation of solar cell era, significant trends in development perovskite cells (PSC) were observed. Exploring suitable materials for its wafer structure, such as and electron transport layers (ETL), a major emphasis high-performance PSC development. Because matching band structure to MaPbI3, TiO2 is most often utilized material ETL. However, application PSC, trapping wide energy gap become drawback. The goal this research improve absorption performance employing ETL with Fe...

The research was motivated by the lack of students’s learning ability caused their difficulties in understanding abstract physics concepts. Cmaptools-based media prototype aided 5E Learning Cycle (5EPMBCT) method may be an alternative solution to this problem, because it can help students learn from his own experiences so that they apply concepts and also using CT-based media, is possible visualize Physics This used a pre-experimental design with one group pretest-posttest implemented class...

Pemantauan kualitas air di tambak udang yang efektif sangat dibutuhkan agar produksi meningkat. Oleh karena itu, pada penelitian ini telah dibuat aplikasi sistem online monitoring berbasis android. Pengambilan data parameter sensor dilakukan kampus LIPI menggunakan stasiun datanya ditransmisikan ke logger untuk selanjutnya dikirimkan website. Data diperoleh dari website berupa php (Hyper Text Preprocessor) dan kemudian diubah menjadi JSON (Java Script Object Notation). Parsing dengan fungsi...

A theoretical model of an electron tunneling current in anisotropic Si/Si1−xGex/Si heterostructure was developed. The parallel and perpendicular kinetic energies were coupled the coupling included expressing transmittance through heterostructure. applied to Si(1 1 0)/Si0.5Ge0.5/Si(1 0) with a 25 nm thick strained Si0.5Ge0.5 potential barrier, which each layer has three valleys (valleys 1, 2 3) different inverse effective mass tensors conduction band discontinuity 216 meV. 0)/SiGe structure...

The purpose of this study was to synthesize potassium silicate nanoparticles from rice straw ash using a flame-assisted spray-pyrolysis method. Rice straw, as one the agricultural wastes, used source silica. In experimental procedure, burned at 700°C for 3 hours produce ash. Then, extracted an alkaline We hydroxide (KOH) chemical agent well potassium. solution then put into apparatus nanoparticles. results showed that spray method can assist production spherical with sizes about 50 nm.

Creative thinking is one of the fundamental components 21st-century education that needs to be possessed and developed in students. Thus, students have ability find many alternative solutions solve problems physics learning. The study aimed at providing students' creative on Static Fluid. A case has been implemented through a single case, namely embedded design. Participants this are 27 K-11 instrument utilized Test for Thinking-Static Fluid (TCT-SF) which validated by experts. result shows...

Developing Diagnostic Test on Geometrical Optics (DT-GO) ConceptThe purpose of this research is to develop the instrument diagnostic test optical geometry material, especially in mirror and lens topics, as well unveil misconceptions students at one public schools Subang Regency. A purposive sampling technique with sample selection utilizing cluster random was conducted a total 96 respondents. The utilized by modifying Four Tier which developed Kaltakci- Gurel (2017) developing geometrical...

The teaching materials are the most important components to achieve learning objectives for and learning. A module is one of that systematically designed based on curriculum packaged into units, so it can be used independently by students objectives. Learning oriented 21st century skills, them being creative thinking skills trained through STEM approach’. On other hand, implementing in Islamic boarding schools requires self-regulated This intended foster student independence order have...