Azhari Hasibuan

University of Sumatera Utara | USU · Department of Physics

Research has been successfully conducted on the manufacture of synthetic bolus for radiotherapy made of silicone rubber containing polydimethyl siloxane and alginate as well as the addition of bagasse and wood sawdust. The purpose of this study was to determine the characterization of radiotherapy bolus by analyzing the comparison of the addition o...

The Tani Melati Group located in Desa Bekiung, Kecamatan Kuala, Kabupaten Langkat is a farmer group that pioneered the cultivation of Black Soldier Fly (BSF) maggot larvae, currently capable of producing about 10 kg of maggot larvae per week. The existence of this farmer group is very helpful for the community and the local government in managing t...

Marindal 1 Village is one of the villages located in Patumbak District, Deli Serdang Regency, North Sumatra Province with an area of 810 Ha. Administratively, Marindal 1 Village consists of 12 hamlets and has a population of about 37,000 people. A group of people who are members of the wood processing business are engaged in the business of making...

Robots are intelligent machines that are controlled by computer applications to perform various operations and services to complete high-risk jobs such as fire, poison, sharp objects, viruses, etc. MPU-6050 Serves as a movement medium in robot electronic systems where the robot moves. Arduino nano functions as a controller on a system robot that in...

The monitoring system is used for know or get an information on a situation or condition in a certain place or area, with various methods used, so that many monitoring systems are developed and applied to assist human tasks in carrying out monitoring. The hardware design consists of 2 nodes namely the base node and the client node. At the base node...

One way to reduce the price of fish feed while maintaining quality is to utilize existing organic waste such as fish scales or weed plants such as water hyacinth and taro. This study aims to determine the physical and mechanical characteristics of extruded feed with waste material added with a reinforcement, namely starch. The materials used were m...

We investigated the value of thermal conductivity of particle board using a tool designed with the principle of converting electrical energy into heat energy by varying temperatures. This study aims to determine the value of thermal conductivity of oil certain particle board and to what extent it can function as a thermal insulation material and to...

We investigate the external field effect on opinion formation based on the majority rule and [Formula: see text]-voter models on a complete graph. The external field can be considered as the mass media in the social system, with the probability [Formula: see text] agents following the mass media opinion. Based on our Monte Carlo simulation, the mas...

Cellulose fibrils are insoluble dietary fibres in the processing waste of bengkoang water-soluble polysaccharides (WSP). The researcher has investigated the characterization of chemical and morphological properties of WSP bengkoang in previous studies. However, the processing waste of the insoluble dietary fibres from WSP bengkoang still needs to b...

The Joint Business Group of Pondok Maggot Marelan which is located in the Village of Falls, District of Medan Marelan, Medan City is a business group that carries out the cultivation of Black Soldier Fly (BSF) which has been able to produce maggot larvae of about 60 kg per week. The existence of this group is very helpful for the community and the...

Agricultural cultivation technology with a hydroponic system is expected to be an alternative for people who have limited land or yards. However, manual control cannot be done at any time due to business and other work, so a controller is needed to monitor and control the temperature and water level in hydroponic plants to avoid the death of plant....

Indonesia is the 9th largest pineapple producer in the world with a production of 1.39 million tons per year. this makes the pineapple leaf fiber (PALF) waste available abundantly in Indonesia. Palf waste has not been widely used in Indonesia. palf is usually used as fabric for textiles or yarn to be used as clothes and as handicrafts. palf has exc...

The outbreak of Corona Virus Disease 2019 (Covid 19) cases that occurred from 2020 until now limits the current maximum allowed room capacity, which is only around 25% to 50% of the maximum room capacity. The purpose of this study is to design a device that can detect temperature and limit room capacity automatically as an effort to prevent the tra...

Society of Lingkungan VIII Kelurahan Gedung Johor, Medan City utilizes the Al-Buchari Mosque as a means of worshiping and gaining knowledge for the Muslim community. However, Al-Buchari Mosque still uses water containers to wash the hands of its worshipers in order to prevent the transmission of the Sars-Cov 2 virus, which is an increasingly worryi...

A water-soluble polysaccharide is a part of the soluble food fibers in bengkuang (Pachyrhizus erosus). In previous research, it has been carried out by the methods of fermentation extraction, adding water and precipitation with ethanol on inulin extraction. A recent study was examined the effect of ultrasound-assisted extraction as a new extraction...

Waste material has a lot of nutrients needed so that it can reduce the price of fish feed. Waste that can be used includes the scales of Torpedo Scad fish (Megalapsis cordyla) , taro leaves (Colocasia esculenta) , and water hyacinth (Eichornia crassipes). This research was conducted to obtain the correct composition of the three wastes in influenci...

This activity was conducted in July and November 2020. Partners of this activity are a freshwater fish farmer community located on Jalan Gatot Subroto no. LK 336 IV, Sukamaju, Binjai Barat Distirct, Binjai, Sumatera Utara. The main problems faced by partners are 1) Farmers have difficulty in providing fish feed in the form of worms 2) The price of...

Zero Hunger as the SDG program aims to prevent global need with innovation to exploit and promote local food uses of all available underutilized food crops. A water-soluble polysaccharide is included in bengkoang ( Pachyrhizus erosus ) soluble fibres. Previous studies reported that ultrasound-assisted extraction impacts starch depending on several...

Sei Siarti Village, Panai Tengah District, Labuhanbatu Regency have problems in the form of limited clean water sources that are suitable for use. There are several potentials including peat water, drilled well water, and Barumun river water that crosses the village. The condition of peat water that does not comply with quality standards for water...

Keberadaan zat polutan merupakan ancaman serius dalam kesehatan. Salah satu zat polutan dalam mempengaruhi kualitas udara adalah gas karbonmonoksida. Sebagian besar karbon monoksida berasal dari emisi gas buang kendaraan bermotor. Tujuan dari penelitian ini adalah untuk membuat alat ukur emisi gas karbonmonoksida kendaraan bermotor menggunakan sens...

Indonesia is called rings of fire, because Indonesia is flanked by 3 active plates namely the Eurasian plate, the Indo-Australian plate and the Pacific plate. This resulted in Indonesia being vulnerable to geological disasters, ranging from landslides, volcanic eruptions, earthquakes and tsunamis. Java Island is one of the areas potentially affecte...