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Lightning has always been a dangerous threat to the equipment of electric power systems consisting of: power plants, substations, transmission lines and distribution lines. Generally, overhead high-voltage transmission lines are exposed to lightning strikes. Therefore, the degree of protection against lightning is determined based on the degree of insulation of the equipment. To prevent damage to equipment due to lightning strikes, arresters are used. In this study, three arrester models were used as comparisons, namely. IEEE arrester model. The system was simulated using Alternative Transients Program (ATP) software. The results showed that the lightning rod was declared successful in protecting the transmission system, where the three lightning rods had a Margin Protection (MP) of arresters that reached 28%. In the simulation, it is known that the IEEE arrester successfully cut off the lightning current in the transmission system so that the transient overvoltage recorded on the transformer does not exceed the Basic Insulation Level ((BIL) trafo.  

Idle time or disturbing time is time wasted while the ship is moored is a classic problem that has not been solved in Indonesia. Tanjung Emas Port is the busiest port in Semarang City, Central Java, which is a stopover center for providers of sea transportation facilities and infrastructure in the context of loading and unloading means the transfer of cargo from and onto ships to be stockpiled into or directly transported to the place of the owner of the goods through the port dock using loading and unloading complementary equipment. This study aims to determine the effect of port services, ship engine tools, and loading and unloading productivity, on Idle Time at Tanjung Emas Port Semarang. The population in this study were ship crews from the deck departement division and the sample used in this study was 119 respondents. And do not use the sampling technique because the number of samples is the same as the population, then the data is analyzed using multiple liniar regression with the help of (software) Statistical Package (SPSS) Version 26. The formulation of the regression in this study is as follows: Y= 0,597 + 0,368X1 + 0,356X2 + 0,213X3 + m. From this equation it is know that the most dominant variable influencing Idle Time is the port Service variable with a regression coeffient of 0.368. The R2 test ( R The ) obtained a result of 0.443 or 44.3%, which means that Idle Time is influenced by the variable port Services, Loading and Unloadng Speed, and Ship Machinery Equipment which is equal to 44,3% and other factors that affect Idle Time Tanjung Emas Port Semarang, namely 100%.

Sweet arum mango is one type of mango which when harvested has the highest vitamin C content of 7.53 ± 0.4 mg / 100 g. Processed sweet arum mango fruit products that have the potential to be developed are in the form of fruit juice. This is a consideration for researchers to conduct further research on the addition of eugenol preservatives with different concentrations of preservatives and storage times to produce better mango juice. Eugenol compounds have pharmacological activities as analgesics, anti-inflammatory, antimicrobial, antifungal, antiseptic, stimulant, so these compounds are widely used in the pharmaceutical industry. Based on the experimental results, optimal conditions for the use of eugenol occurred until day 2, where the addition of eugenol with treatment 3 as much as 1 ml amounted to 38.82% better when compared to other variations of eugenol addition.  The addition of eugenol preservatives cannot preserve the content of vitamin C in sweet mango juice even the content of vitamin C tends to decrease. Sweet arum mango juice has a shelf life of 12 days and total dissolved solids of more than 20%, so the resulting fruit juice does not meet SNI 7382:2009.

Most of the employees in this home industry are men who live around the home industry. With this business, it becomes a source of income or additional income for the surrounding community and becomes a new job opportunity for the community or teenagers who do not attend high school but have skill

Responsibility (CSR) or corporate social responsibility, the definition of which is still a matter of debate among practitioners and academics. As a concept that originates from abroad, the main challenge is to provide a meaning that is appropriate to the Indonesian context. More precisely, before implementing CSR, it should be adapted to local situations and conditions in Indonesia. This will really help the implementation of CSR so that it is not misused, especially in advancing the quality of human life in Indonesia.

The CSR program is a business commitment to act ethically, legally, and contribute to improving the quality of life of the workforce as well as their families, local communities and the wider community. According to Marnelly (2012), the CSR concept involves responsible partnerships between government, companies and local communities that are active and dynamic. CSR is an action carried out by business actors or stakeholders through responsible behavior towards society. Business people focus their attention on 3 things, namely economic, social and environmental. This is focused as a mutually sustainable activity and improving reputation is one way to prevent crises (Sari, 2010)

At the beginning of 2020, the world was shocked by the outbreak of a new variant of the virus, namely coronavirus (SARS-CoV-2) and the disease was called Coronavirus Disease (COVID-19). It is known that this virus originated in Wuhan, China at the end of December 2019. To date, it has been confirmed that hundreds of countries have been infected with this virus. . Covid-19 is a group of viruses that can infect the respiratory system. In many cases, this virus causes mild respiratory infections, such as flu. However, this virus also causes severe respiratory infections, such as lung infections (pneumonia). WHO itself has declared Corona Virus Disease 2019 (COVID-19) a pandemic, as well as the Indonesian Government based on Presidential Decree Number 11 of 2020 concerning Determining a Public Health Emergency Corona Virus Disease 2019 (COVID-19) has declared COVID-19 an emergency public health that must be taken to overcome. This pandemic condition has had a broad impact on various sectors, starting from the economic sector, tourism, and so on. Many activities have been affected and can even be said to have been hampered due to the Corona outbreak.  

With increasingly advanced technological developments, some of these problems can be minimized with the latest technology in the construction sector known as Building Information Modeling (BIM). With BIM, all parties involved in the project (stakeholders) can collaborate from the planning stage before the project is carried out, thereby reducing the potential for errors in development implementation (Mafrul, 2022). The use of BIM can provide the various functions necessary to model the entire life cycle of a building, while also providing a basis for dealing with changes and construction progress in positions and correlations between project teams. Proper implementation of BIM enables increasingly integrated design and construction processes, creating buildings with better quality, more efficient production costs, and shorter project completion times (Khairi et al., 2022b).