A5067871878- Thermochemical Biomass Conversion Processes
- Engineering and Technology Innovations
- Biodiesel Production and Applications
- Catalysis and Hydrodesulfurization Studies
- Extraction and Separation Processes
- Microwave-Assisted Synthesis and Applications
- Recycling and Waste Management Techniques
- STEM Education
- Nonlinear Dynamics and Pattern Formation
- Vocational and Entrepreneurial Education
- Fluid Dynamics and Mixing
- Management and Optimization Techniques
- Algal biology and biofuel production
- Advanced Combustion Engine Technologies
- Fluid dynamics and aerodynamics studies
- Education and Character Development
- Ship Hydrodynamics and Maneuverability
- Arduino and IoT Applications
- Catalytic Processes in Materials Science
- Educational Methods and Outcomes
- Mechanical Engineering and Vibrations Research
- Mathematics Education and Pedagogy
- Dyeing and Modifying Textile Fibers
- IoT-based Control Systems
- Catalysts for Methane Reforming
State University of Semarang
2013-2024
Indonesia University of Education
2019
University College of Bahrain
2018
Universiti Sains Malaysia
2011-2013
Biopolymers are utilized extensively in the medical field. The production of biodegradable bone screws for implants utilizing biopolymer materials is one advances developments. Polylactic acid (PLA) a frequently employed medicinal applications. Using 3D printing, this research was done to create screw derived from PLA. printing process chosen reduce cost and duration repair. A nozzle temperature 210oC bed 60oC PLA screws. torque test, fracture analysis, density biodegradation test were...
Tingkat cacat permukaan pada outer tube model 2DP di area pemesinan PT.XYZ masih mencapai 3,91%, melebihi Key Performance Indicator (KPI) perusahaan sebesar 1,36%. Kajian terdahulu membuktikan efektivitas siklus Plan-Do-Check-Action (PDCA) berbagai sektor, namun belum ada penelitian empiris yang memfokuskan penurunan komponen otomotif proses Indonesia dan mengukur dampak langsung integrasi PDCA terhadap pencapaian KPI serta penghematan biaya perbaikan. Oleh karena itu, ini bertujuan untuk...
Penelitian ini bertujuan untuk mengevaluasi pengaruh penuaan termal pada sifat mekanik karpet felt polyethylene terephthalate (PET) yang dilaminasi dengan low density (LDPE) pengembangan quarter trim panel kendaraan. Latar belakang penelitian berfokus pentingnya material interior otomotif tahan lama. dikenal memiliki stabilitas dan kekuatan tarik tinggi, sementara menawarkan fleksibilitas. Namun, terkait kombinasi laminasi dampak terhadap mekaniknya masih terbatas. Metode mencakup persiapan...
The invention of three-dimensional (3D) printing has transformed the medical field, offering sophisticated and accurate options for surgery planning, education, individualized therapy. Although 3D is widely used, little known about how parameters process affect properties composites reinforced with hydroxyapatite (HA) that been derived from crab shells. present study investigates influence nozzle temperature in fused deposition modeling (FDM) on physical, mechanical degrading PLA/PCL/HA...
Chitosan has been broadly utilized in bone scaffold production because of its antibacterial qualities, low toxicity, biodegradability, biocompatibility, and ability to aid regeneration processes wound healing. In this work, chitosan was produced from crab shell waste through demineralization, deproteination, deacetylation, utilizing HCl 1:7 (v/v), NaOH 3%, 1:10 (v/w), 50%. The aim study is examine the deacetylation temperature’s impact towards crystallinity index, chemical bond, degree...
Indonesia is a maritime country with two-thirds of its territory the ocean. has diversity marine resources total fish production continuing each year to reach 8.02 million tons. The traditional fishing vessel one transportation and livelihood support in was made based on knowledge from generation generation. Thus, investigation vessels must be conducted measure resistance profile wave pattern. This analysis consider mono-hull design. use numerical approach rapid predict performance ship...
<span lang="EN-GB">This review paper provides an overview of simulation-based hydrodynamic design optimization for ship hull forms. It also includes a numerical analysis aimed at accomplish early-stage in terms performance. A module, surface modeling and module are the primary components this analysis. The both simple approaches high-fidelity numeric tools; these integrated tools used to evaluate performances different stages. offers variety techniques representation modification. is...
The minimum facility of wastewater treatment in batik home industry raises an environmental problem.Application emulsion liquid membrane (ELM) recovering textile dyes from industrial waste is still important alternative to solve the problem.Conventional ELM technology has problems stability as well used breaking.ELM system under Taylor-Couette column (TCC) offers solution for stability.Emulsion was prepared by using Span 80 surfactant, kerosene diluent, and hydrogen chloride internal phase...
Abstract The purpose of this study is to synthesize and characterize iron sand from the south coastal area Purworejo, Central Java. Iron was mechanically filtered using permanent magnets 35 times. characterized x-ray diffraction (XRD) determine compound contained therein his physical characteristics. heated at temperatures 800 ° C 900 for 5 hours in furnace after it cold followed by XRD testing. Based on pattern, a single phase Fe 2 O 3 as magnet base can be formed heating process hours.
Abstract To minimise water pollution as well to improve the economic value of some unutilised natural resources, application dyes have been widely encouraged this past decade. Natural considered be effective in minimising use chemical agents which turn overcome problems. Despite advantages dyes, few problems are also encountered. It is therefore production powder becomes another concern. In article, Brachiaria mutica for textile dyeing was discussed terms colour darkness, fastness, and...
The main problem related to thermal energy is that the must be used directly and immediately as generated. For example, of solid waste combustion can utilized for power generation. However, studied storage technology still placed on second opinion heat energy. stored using a simple or mobilized system which store brought somewhere it needed, example domestic heating drying usage. This article evaluated micro from household into warm water great washing clothes, dishes, shower, other purposes...
The Twin Wire Arc Spray (TWAS) is one of the most widely used types thermal spray coating because its low cost, high efficiency and can also be for mass production. However, heat treatment after Fe-based amorphous process uses TWAS method on pump impellers made 304 stainless steel are not well documented. purpose this study to determine effect post FeCrBMnSi with increase wear resistance impeller materials steel. In study, NiAl were as bond coats top coats. Before process, substrate...
Although textile dyes is basically available in very low concentration; it should be removed due to the toxicity human body and environment. Among existing methods, emulsion liquid membrane (ELM) a promising method by providing high interfacial area ability remove concentration of solute. The optimal emulsions were produced using commercially supplied homogeniser. drop size was measured aid microscope image J software. Initially, methylene blue simulated wastewater extracted stirrer....
Removal of cadmium is very important as it one several harmful heavy metals commonly found in textile wastewater.This study focused on determination emulsion liquid membrane (ELM) components for removal.Carrier, diluent and stripping selection was done by contacting feed phase (150 ppm cadmium) with organic solution at ratio 1:1.Both solutions were mixed 500 rpm 24 h using magnetic stirrer, then the samples allowed to settle separate.The results showed that comparison acid solution, basic...
The application of natural dyes has been inseverable part human life. Initially, were the only colorants used for textile application. However, invention synthetic at end 19th century triggered a significant decrease in wide and exclusive colorants. Research was conducted on various solvent type, temperature, extraction time. Extraction temperature varied 70, 80, 90, 100, 110oC, while time investigated 60, 120, 150, 180 min. Volume ratio dye material to 1:20. dyestuff separated by heating....
Biomass is alternative energy. This research was conducted to determine the effect of biomass type and size on gasification process using a downdraft gasifier. Sengon mahogany woods were used as feedstock. The study began by conducting proximate test feedstock find out its properties. Than studied two sizes i.e. wood chips blocks. Each experiment carried for 90 minutes 10 kg biomass. air supplied at 3 m/s. results showed that affected temperatures, flame characteristics, residues. provided...
This paper presents rotor power optimization of the Horizontal Axis Wind Turbine various parameters such as airfoil, angle attack, and wind speed. Simulation HAWT uses Blade Element Momentum (BEM). Furthermore, using Taguchi method with L16(43) orthogonal array. The used in this study were: airfoil NACA (National Advisory Committee for Aeronautics) 4412, 2412, 4412-NACA 4412mod-NACA 2412mod; attack 3˚, 4˚, 5˚, 6˚; speed 5, 6, 7, 8 (m/s). simulation general parameter at 1 MW HAWT. Several...