bluuebunny/crossref_metadata_2025 huggingface dataset:
Efisiensi Daya Sel Surya Menggunakan Konverter DC-DC Mensuplai Beban Listrik
Authors: Parlindungan Pandapotan Marpaung
Published: March 2024

The maximum solar cell power capacity without load parameter Pm(no-load) = 0.4 watts is used to supply an external electrical load with a resistor R in ohms. Irradiation of the solar cell surface area during the day in bright sunlight supplies an electrical load with a resistor R = 100 Ω which absorbs solar cell power with parameters Psel(R) = 0.09 watts. The power efficiency of a solar cell loaded with a resistor R is expressed as the parameter eff.sel(R) which is the result of a comparison between the power Psel(R) = 0.09 watts and the power Pm(no-load) resulting in a value of eff.sel(R) = 22.5% . Achieving solar cell to more effectively supply a resistor load of R = 100 Ω is efficiency done by adding a parallel FC-75 type dc-dc buck converter device to the solar cell output. Test results: The input power of the FC-75 dc-dc buck converter is Pi(conv.) = 0.178 watts. The resistor load R absorbs the output power Po[conv.(R)] = 0.078 watts. The power efficiency of solar cells using a dc-dc buck converter is expressed as the eff.sel(conv.) parameter. The results of the comparison between the power Po[conv.(R)] and the power Pi(conv.) reach 43.82%. The achieved power efficiency results for solar cells supplying resistor load R using a dc-dc buck converter are eff.sel(conv.) = 43.82%, which is greater than eff.sel(R) = 22.5%.
Pengaruh Variasi Komposisi Agregat Kasar Terhadap Kuat Tekan dan Penyerapan Air Paving Block
Authors: Dera Anggun Saputri  , Syafri Wardi  , Angelalia Roza
Published: March 2024

According to SNI 03-0691-1996, paving block is a composition of building materials made from a mixture of portland cement or similar hydraulic adhesive materials, water and aggregate with or without other additives. Pavement construction in Indonesia mostly uses natural aggregates or crushed stone that has a rough and angular surface so that it has excellent adhesion to the concrete. The purpose of this study is to evaluate the effect of the addition of crushed stone on the compressive strength and water absorption of concrete paving blocks, compared with paving blocks of mortar. Paving block test samples were made with 5 variations of composition of cement:sand:crushed stone, namely 1:4:0, 1:4:1, 1:4:2, 1:4:3 and 1:4:4. Each composition was made as test samples of blocks with a size of 20 cm × 10 cm × 6 cm. The test results showed that the average compressive strength of paving blocks with the composition of 1:4:0, 1:4:1 and 1:4:4 was less than 8,5 MPa and water absorption is greater than 10%; thus, they were not classified as paving blocks with grade D. While, the paving blocks with the composition of 1:4:2 and 1:4:3 were classified as paving blocks with grade D.
Utilization of Floating Sludge (Oil and Fat) in The Meat Processing Industry as Raw Material for Catfish Pellets
Authors: Masteryna Maghfirahdina  , Naniek Ratni J. A. R.
Published: March 2024

One of the meat processing industries in Jombang Regency produces a significant amount of floating sludge waste (oil and fat) in its grease trap unit. If proper waste management is not carried out, environmental issues can arise. This article explores the potential use of floating sludge waste from meat processing industries as a raw material for catfish feed, with the aim of reducing waste, improving the economy, and reducing the production costs of catfish farming. Therefore, this research aims to analyze the best nutritional combination for catfish feed made from waste from the meat processing industry, tofu dregs, organic vegetables, and discarded eggs. The method used is fermentation with EM4 and sugarcane molasses, along with the addition of other waste materials to enhance the nutritional quality of the feed produced. There are five variations of feed compositions analyzed using proximate analysis and compared with SNI 01-4087-2006 concerning Quality Requirements for Dumbo Catfish Feed. The results show that several combinations of ingredients can meet most of the catfish feed quality standards, with the best option is K3 feed that made from floating sludge and discarded egg waste. Although, protein content is still below the standard, this combination has the potential to reduce the cost of catfish farming. This article encourages the development of sustainable, environmentally friendly alternative feeds and the potential reduction of industrial waste.
Identifikasi dan Penentuan Strategi Pengelolaan Limbah Domestik Pada Kawasan Pesisir Dusun Kisik, Kabupaten Pasuruan
Authors: Amanda Cornelia Prastiwi  , Firra Rosariawari
Published: March 2024

In Indonesia, around 60% of the total 250 million population lives in coastal areas. Kisik Hamlet is one of the settlements located in the coastal area of the Madura Strait and is a densely populated settlement. The increase in population in coastal areas is vulnerable to increasing problems with the quality of the surrounding waters because people still consider rivers, seas, and beaches as places for dumping solid and liquid waste. In this research, we studied and assessed community perceptions regarding the level of awareness and desire to participate in managing domestic wastewater as an initial idea of whether ongoing research will be conducted regarding wastewater processing facilities in this area. The methods used are observation and interviews, questionnaires, and data analysis with SPSS software. The research results show that the majority of people still dispose of gray water through drainage and directly into the sea, and only a small percentage dispose of black water into septic tanks. However, the level of awareness and desire to participate by the community in waste management efforts is quite high. Therefore, it is necessary to implement a waste management strategy by building a community-based domestic wastewater collection system (Communal IPAL), accompanied by ongoing outreach and education to support the successful implementation and evaluation of this strategy.
Faktor Penyebab Ketidaksesuaian Pencatatan Sensus Harian Rawat Inap
Authors: Flower Desma Sihaloho  , Kajol Santa Monika Marbun
Published: March 2024

The daily census of inpatients is a means of supplementing medical records in reporting. Given the importance of the inpatient census, its management should be supported by medical record officers who have good knowledge and skills. The method obtained from 3 journals was then analyzed by descriptive method. The method used is Literature Study, carried out with a data set technique to review books, literature search, notes and reports related to research. From some of the literature studied, it was found that there was a discrepancy in the implementation of the inpatient daily census, this can be seen from the indiscipline in filling out the Inpatient Daily Census due to the absence of fixed procedures and technical instructions containing all activities that must be carried out by inpatient ward officers. Other factors are: Man, Money, Methode, inadequate human resources, no socialization of inpatient daily census recording officers with ward nurses, minimal infrastructure, SOPs governing the daily census have not been implemented, and the monitoring process of evaluation of the daily inpatient census is still not regularly scheduled. This is what makes most of the process of conducting the daily census of hospitalizations has not been carried out properly in hospitals.
Analisis Kerentanan Tsunami di Bandar Lampung Menuju Mitigasi Era Industri 4.0
Authors: Susanti Sundari
Published: March 2024

This research aims to analyze the vulnerability of the city of Bandar Lampung to tsunamis with a case study of the 2018 Sunda Strait Tsunami and at the same time provide an overview of past conditions and mitigation concepts to the community that are in accordance with the development of Industry 4.0 today and in the future, using qualitative methods descriptive with case studies. This method is used to reveal the problems behind the visible data can provide greater understanding the phenomena that occur. The research result is known that the potential for Tsunami vulnerability is due to the geographical location and the existence of Mount Krakatau which is a threat to tsunamis caused by earthquakes, volcanic eruptions, coastal and underwater landslides. Apart from that, public ignorance about tsunami in disaster preparedness is needing serious attention. The development of appropriate Industrial 4.0-based tsunami detection and early warning tools that can monitor in real time requires regulatory support as a sustainable management strategy. Efforts to increase people's knowledge and ability to face the threat of disaster can be done through education and outreach by creating disaster mitigation programs that are visionary, easy to implement and right on target using digital media.
Penggunaan Sirs Dalam Rumah Sakit
Authors: Lusiana Simanjorang  , Rield Rivaldo Benedictus Simbolon
Published: March 2024

A medical record is a document or record containing facts related to the patient's condition, disease history, and past treatment filled in by certain health workers who provide health services to the patient. In general, the system used in hospitals is referred to as SIRS or Hospital Information System. The method used is literature review, where this research is carried out with a data set technique to review books, literature search, notes and reports related to research. Medical record data is used as material for health statistics. Hospital information systems include all public and special hospitals whether they are managed publicly or privately as stipulated in Law of the Republic of Indonesia Number 44 of 2009 concerning Hospitals and Regulation of the Minister of Health No. 82 of 2013 concerning Hospital Management Information System, where article 1 paragraph 6 says that the function of SIRS is to improve efficiency,  effectiveness, professionalism, performance, and access to services. Outpatient medical record information systems can facilitate the exchange of outpatient medical records quickly and precisely so that they can be relied upon to provide more complete and fast administration without reducing the accuracy of the information made
Hubungan Tingkat Pengetahuan dengan Perilaku Bullying pada Remaja di SMP Santo Louis Palembang
Authors: Anastasia Alvareza Ratih Damayanti  , Ketut Suryani
Published: March 2024

Bullying has the meaning of bullying or behavior that disturbs people who are considered weaker. This behavior can be said to be repeated negative actions carried out intentionally with the aim of hurting them physically or mentally. This research uses quantitative methods, analytical survey design with a cross sectional approach. The sample consisted of 64 respondents, taken using a purposive sampling technique. Data was collected using a questionnaire, then univariate and bivariate analysis was carried out. Data were analyzed using Kendall Tau b correlation analysis using a significant value of 5%. The results of this univariate study show that the majority of respondents are 13 years old, 38 respondents (59%) are female, 42 respondents (65.6%) have good knowledge, 58 respondents (90%) have good behavior. .6%). The results of the bivariate analysis showed that there was no significant relationship between the level of knowledge and bullying behavior (τ= 0.050; p= 0.681). It is recommended that institutions can prevent and minimize bullying incidents by providing information or counseling so that teenagers have the self-awareness not to carry out bullying behavior.
Uji Karakteristik Sediaan Salep Ekstrak Etanol Daun Sambung Nyawa (Gynura Procumbens (Lour.) Merr.)
Authors: Novycha Auliafendri  , Agnes Kris Darna Ningsi Gee
Published: March 2024

The leaves of the lifeless tree (Gynura procumbens (Lour.) Merr.) have been widely used as traditional medicine and show that they can treat various diseases and infections with simple processing. However, the use of life-giving leaves as an ointment to treat wounds is very rare. The aim of this research was to produce ointment and assess the characteristics of ointments made with ethanol extract of sambungjiwa leaves. The ointment used in this research was made with ethanol extract of sambungjiwa leaves, adeps lanae, vaseline album, distilled water. Data was observed descriptively and using qualitative research methods. This study used three ointment concentrations, namely 5%, 10%, 15%, tested three times for each characteristic evaluation (organoleptic test, pH test, spreadability test, homogeneity test). The results of the research showed that the ethanol extract of the succinct leaves can be formulated as an ointment and the evaluation of the characteristics of the ointment showed that in the organoleptic test it appeared to be green in color with a semi-solid form and had a distinctive odor of the ethanol extract of the succinct leaves; the pH test shows a pH value of 5; the spreading power test shows a spreading power value of 5; and the homogeneity test showed that there were no coarse or fine grains and no color change at the beginning or end so that from the results of the characteristic test it could be concluded that the ethanol extract ointment preparation of sambungjiwa leaves met the standard requirements of the ointment characteristic test.
Efektivitas Kombinasi Slow Sand Filter Media Geotekstil dan Karbon Aktif untuk Menyisihkan Nilai Permanganat dan Total Coliform
Authors: Sherly Galuh Puspita  , Firra Rosariawari  , Okik Hendriyanto Cahyonugroho  , Aussie Amalia
Published: March 2024

The water of Kali Jagir, Surabaya, used as a raw water source, has been contaminated with high levels of BOD, COD, and permanganate. Therefore, this research seeks to address these issues by combining slow sand filtration with various media, including geotekstil and activated carbon. The study aims to optimize this combination in reducing parameters such as permanganate and total coliform in the raw water. The research methodology includes literature review, testing of raw water characteristics, preparation of slow sand filter reactors, preparation of filter media, and testing of media variations with an observation of organic and bacteriological pollutant removal efficiency. The results show that the combination of filter media involving sand, activated carbon, and geotekstil is effective in reducing organic pollutants. Geotekstil aids in the growth of the schmutzdecke layer and facilitates cleaning, while sand and activated carbon tend not to support such growth. Moreover, the optimum schmutzdecke growth time varies depending on the type of media used. These findings have significant implications for raw water treatment in industrial areas vulnerable to pollution, resulting in quality drinking water and addressing the frequent clogging issues in slow sand filters.
Penentuan Kebutuhan Poli Aluminium Klorida pada Proses Penjernihan Air di Unit Water Treatment PT. XYZ Kuala Tanjung
Authors: Nelza Novia , Sebayang Mariani , Yunianto  , Simatupang Dimas Frananta
Published: March 2024

A Water Treatment Unit (WTU) is a station that works on the processing and conditioning of raw water to meet the desired water quality. Water purification at PT. XYZ Kuala Tanjung uses raw water sourced from surface water or rivers. The river water used still contains solid substances and organic matter that render the water unsuitable for industrial use. Both suspended and colloidal solid substances can cause turbidity. Turbidity caused by solid substances can be addressed using coagulation techniques. The purpose of this research is to determine the optimal concentration and dosage of coagulant to clarify water in the WTU. The coagulant used is polyaluminum chloride (PAC). The research method is based on experiments using jar tests and stoichiometric calculations. The determination of the optimal coagulant is measured based on turbidity parameters. Experiments are conducted with varying concentrations of PAC ranging from 25-65 ppm, and the smallest turbidity value obtained is 1.21 NTU at a PAC concentration of 65 ppm, with a PAC requirement of 202.6679 kg/day. The higher the PAC concentration, the clearer the resulting water, but the daily requirement for PAC also increases.
Keanekaragaman Jenis Gulma Invasif di Vak Gymnospermae Kebun Raya Bogor
Authors: Rizki Wulan Anjani  , Eko Purnomo  , Muhammad Rifqi Hariri
Published: March 2024

Weeds are botanical organisms deemed undesirable within a designated planting area due to their potential to diminish the value of cultivated plants and engender competition with the primary crop. The coexistence of weeds with primary crops can exert a significant influence. The present study used an exploration method was conducted inside the Gymnosperms collection at the Bogor Botanic Gardens, specifically focusing on sections II.E, V.F, and XV.A. A total of 38 distinct weed species exist, belonging to 25 different plant families. Among these groups, the two most prominent ones are Asteraceae and Commelinaceae. One of the numerous contemporary approaches to weed management involves the utilization of herbicides, as this strategy is widely seen as more effective in terms of cost, time, and labor efficiency.
Gangguan Ekosistem Laut sebagai Dampak Keberadaan PLTU Teluk Sepang Bengkulu: Sebuah Telaah Pustaka
Authors: Sefri Oktaviani  , Sri H. Siregar  , Rizki Fauzi  , Reflis Reflis , Satria P. Utama
Published: March 2024

However, the people who work as fishermen feel disadvantaged because they cannot find fish and other marine animals as a livelihood due to the damage to the marine ecosystem caused by PLTU waste. However, people who work as fishermen feel lost because they cannot find fish and other marine animals as a livelihood due to damage to the marine ecosystem caused by PLTU waste. This literature review aims to provide information to the company, government, and community regarding the impacts caused by the existence of the Teluk Sepang PLTU and recommendations for solutions that can be applied to minimise the impact of pollution. The results of the review show that the discharge of wastewater from the Teluk Sepang PLTU has the potential to cause the parameters of temperature, salinity, pH, and turbidity of seawater to be incompatible with quality standards. Damage to marine ecosystems can also be caused by coal spills from barges. This causes all marine ecosystems to be disrupted, ultimately causing the community to experience economic losses. Three strategies can be recommended in an effort to control marine pollution due to the presence of the Teluk Sepang PLTU, namely increasing the efficiency of coal fuel use, managing liquid waste effectively, and increasing water use efficiency.
Analisis Hubungan Antar Parameter Air Bersih di Sekitar Rencana Pembangunan Pasar Agro Kabupaten Bojonegoro
Authors: Tri Karisma Wardhani  , Okik Hendriyanto Cahyonugroho
Published: March 2024

Markets are places that facilitate buying and selling activities and are visited by many people, it making them vulnerable to the spread of a disease that can come from virus-carrying animals or inadequate sanitation. A healthy market should have good sanitation, such as adequate availability of water as sanitary higiene with adequate quality. Water used for sanitary hygiene purposes must be protected from pollutant sources and safe from contamination, and meet quality standards according to Regulation of the Minister of Health No. 32 of 2017. Therefore, to determine the quality of water that will be used to meet the sanitation needs of the market, this study measured the quality of clean water directly at three points around the location of the “Pasar Agro” development plan. Water quality measurements are carried out using methods according to the Indonesian National Standard according to each parameter to be measured. Based on the results of the measurements carried out, there are two chemical parameters that have not met, namely manganese and detergent parameters, as well as biological parameters in the form of total coliform. Correlation testing was carried out using Minitab 17 software on water chemistry parameters to determine the relationship between parameters, and it was found that there were only a few parameters that were related to each other.
Analisis Hubungan Jumlah Beban Pencemar Terhadap Kualitas Air Permukaan Menggunakan Perangkat Lunak SPSS 23
Authors: Disnanda Utamifa Jannahdita  , Okik Hendriyanto Cahyonugroho
Published: March 2024

The amount of surface water pollutant load in the upstream tends to be lower when compared to the amount of surface water pollutant load in the downstream, this is due to the flow of water flowing from upstream to downstream and resulting in changes in surface water quality. Therefore, the purpose of this study is to understand the relationship between the level of surface water pollutant load in the upstream and downstream areas of Greges River, Surabaya by utilizing SPSS 23 software. The analysis method utilized refers to the simple linear regression method. The results of the analysis showed that with a significance level of less than (<) 5%, it can be concluded that there is an indication of an acceptable relationship between upstream surface water quality and downstream surface water quality. Simultaneously, the upstream surface water quality has a significant effect on the downstream surface water quality of Greges River, with the level of relationship reaching 85.7%, meaning that there is a very strong linear relationship between the upstream surface water quality and the downstream surface water quality it produces.
Manfaat Ekonomi Kelangsungan Ekosistem Terumbu Karang di Perairan Pulau Enggano Provisi Bengkulu: Sebuah Telaah Pustaka
Authors: Siregar Sri Haniarti , Oktaviani Sefri , Fauzi Rizki , Reflis Reflis , Satria P. Utama
Published: March 2024

Enggano Island has several potential biological resources that can improve the economy in the area, one of which is coral reefs. The biological resource potential of coral reef ecosystems in the Enggano Island area is one of the mainstays of community livelihoods, namely as a fishing ground for fishermen. This activity has been carried out for a long time and the intensity is getting higher from time to time, so it is necessary to conduct a study to calculate the value of the economic benefits of coral reef ecosystems in the Enggano Island area in the form of direct and indirect economic value for the benefit of sustainable management and utilisation. This literature review aims to provide information to various parties related to the Economic Benefits of Coral Reef Ecosystem Sustainability in Enggano Island Waters, Bengkulu Province. The results of the review of previous studies showed that the value of direct economic benefits amounted to Rp. 561,327,640, indirect benefits amounted to Rp. 46,342,500,000, optional benefits amounted to Rp. 2,516,077,983, and the benefits of the existence of the Enggano Island coral reef ecosystem amounted to Rp. 127,425,000,000. All of these economic benefits have been felt by fishing communities and other user communities.
Strategi Pengamanan Cyber: Lingkup Kerjasama dalam Menghadapi Ancaman Cyber
Authors: Chintya Pradilla Putri  , Widya Anggraini  , Yuda Mahendra Hasibuan  , Nurbaiti Nurbaiti
Published: March 2024

Threats to the security of important objects and files are growing rapidly. In the rapid development of the digital era, the security of goods and files has become very important, which is a big problem in terms of cyber security. Cybercriminals are more clever and skilled at exploiting information security gaps in digital systems. Improving cyber security requires a thorough analysis of the threats faced in the digital environment and the solutions that can be implemented. The aim of this research is to analyze the main targets, identify the main challenges to protect them from cyber attacks, evaluate and recommend measures and strategies to improve file security, explore case studies related to threats and solutions in the digital environment. The qualitative approach uses data collection methods. Potential threats of cyber crime in Indonesia include hacking, cracking, cyber sabotage and spyware. The risk management process includes identification, evaluation, handling and controlling risks. To anticipate danger, therefore, technology experts are needed to support the development of defense systems in developed countries and establish a cyber security command center.
Analisis Hambatan Belajar Mahasiswa pada Mata Kuliah Statistik
Authors: Yohanes Briyan Vincesius Mendrofa  , Angela Br Surbakti
Published: March 2024

Education is an effort to make sense of understanding and the promise of learning so that it can combine the qualities of life. For this reason, it is necessary to minimize it so that there are no obstacles to learning activities. Obstacles are a role in the process of learning language and language to gain knowledge. Therefore, samahawa is aware of being able to fall behind in learning which has an impact on the obstacles that are left behind. This research focuses on qualitative descriptive research which is also used to analyze learning obstacles in statistics courses. Studying statistics courses is very crucial for students during their time when they are required to study, process, analyze and interpret data to complete their thesis, thesis and/or dissertation. Simply put, statistics in education involve the regular collection of both raw and unprocessed data. The subject of this presentation is the level II and III health news management study program which is attended by 30 people at STIKes Santa Elisabeth Medan. This research is a cooperative company that is secure in its location to reveal the things that have become a factor that hinders learning in the world in the eyes of College Statistics.
Pengelolaan Limbah Organik Kantin Menjadi Eco Enzyme Subtitusi Cairan Pembersih di PT. XX
Authors: Septiani Riana , Sundari Susanti
Published: March 2024

The largest source of waste is generated from households at 38.3%. One of the methods of recycling organic waste by recycling is by fermentation, for example by producing eco-enzyme which is a solution of complex organic substances produced from the fermentation process of a mixture of organic waste, molasses and water. In this research, the purpose of using eco-enzyme is as a cleaning fluid for both sinks and crusty floors with the aim of seeing the effectiveness of eco-enzyme work with the aim of being a substitute for cleaning fluids sold on the market and including measuring the savings that can be made from this substitution in PT. XX, using experimental research methods. The results of research and observations show that eco-enzyme cleaning fluid is able to inhibit the growth of Escherichia coli (E.coli) bacteria as evidenced by a decrease in the number of bacteria (without eco-enzyme: 4.25 × 102 CFU/cm2; with eco-enzyme: 3.7 × 101 CFU/cm2) through swab tests and laboratory tests. Visual observations show significant results in making crusty floors clean. The savings that occur during 1 month by using eco-enzyme cleaning fluids as substitutes for cleaners sold in the market are IDR. 938,500/month.
Pengaruh Service Level Supplier Terhadap Performance Logistic pada Warehouse di Pt.Xyz Branch Batam
Authors: Dannya Fatima H. W  , Akmal Suryadi
Published: March 2024

This research analyzes the influence of supplier service quality variables and Transportation Distribution regulations on warehouse performance, influenced by regional regulations. The survey method used in this research is the observation method and data sampling using a questionnaire. Questionnaires were distributed to 25 respondents, these respondents were suppliers who had been selected according to predetermined provisions. Based on the results of the questionnaire regarding supplier locations, it was found that 76% of suppliers were in the Batam area while 24% were outside Batam. Research findings show that supplier service quality has a positive and significant impact on warehouse performance, and improvements in such services can significantly improve warehouse performance. Apart from that, transportation and distribution variables also contribute positively to warehouse performance, and have a positive and significant influence on local government regulations. The positive correlation between local government regulations and warehouse performance shows that managing letter requirements to fulfill these regulations can smooth the flow of goods distribution and increase service levels which will have an impact on warehouse performance..
Analisis Keselamatan dan Kesehatan Kerja di Akademi Metrologi dan Instrumentasi
Authors: Nandang Gunawan Tunggal Waras  , Dudi Adi Firmansyah  , Budi Yasri
Published: March 2024

Occupational Safety and Health (K3) is an effort to create a safe, healthy and prosperous work environment, free from accidents, fires, explosions, environmental pollution and work-related diseases. Work accidents can cause losses for workers, employers, government and society, which can include loss of human life, damage to property and the environment. For this reason, concrete steps need to be taken to prevent and reduce the occurrence of work accidents as much as possible. One of the conditions where work accidents can occur is in the educational environment. The research uses descriptive methods with the aim of identifying the types of work accidents and how to overcome them that can occur. Based on the research results, it was concluded that occupational safety and health are very important, potential accidents in the Akmet environment can be identified. By using the HIRADC method, potential hazards can be identified and controls that must be implemented, such as using elimination methods to creating a quality manual and creating procedures for academic activities. This research has produced a draft Quality Guide for Occupational Safety and Health as well as procedures for academic activities in the Akmet environment.
Pemanfaatan Air Limbah Domestik PT. X Kota Surabaya sebagai Penyiraman Ruang Terbuka Hijau
Authors: Adinda Rahmatanti  , Yayok Suryo Purnomo
Published: March 2024

PT. X’s activities, such as the consumption of clean water by workers, visitors, and building maintenance produce domestic liquid waste in the form of grey water. Domestic liquid waste originating form PT. X is used for watering the company’s green open space, that has an area of 2384,4 . The water treatment used is anaerobic and aerobic biofilter. The volume of liquid waste grey water is 70 of the liquid waste produced at 4,09/day, sp the water utilization effieciency is 70. The resulting domestic liquid waste contains the pollutant parameters BOD5, COD, TSS, -N, oil grease, and Total Coliform, so processing by WWTP is required to be below quality standards. The processing units used consist of an interceptor tank, equalization tank, initial settling tank, anaerobic, aerobic, sedimentation, and efflluent tank. After processing and fulfil the quality standards, which has been set, the resulting efflulent is used for at a dose of 0,002 m3/m2/day with a watering frequency of 2 times a day.
Analisa Karakteristik Pengujian Co-Firing Biomassa Bagasse Tebu di PLTU Rembang Kapasitas 2×315 MW
Authors: Riris Destalia  , Enny Aryanny
Published: March 2024

Energy utilization in power plants in Indonesia significantly relies on fossil energy sources, especially those obtained from power plants that use coal as the main fuel. The aim of testing co-firing of sugarcane bagasse biomass is to determine the effect of co-firing on the reliability and main parameters of coal-fired power plants and to obtain an overview of the feasibility of implementing co-firing which includes aspects of operational technical evaluation, production cost evaluation and environmental evaluation. The biomass effectiveness test was carried out at PLTU Rembang, with test variables of 100% coal, co-firing test of 1.25% and 2.5% sugarcane bagasse biomass with a maximum operational load of 315 MW for 6 hours. The results of data analysis were carried out descriptively. The tested sugarcane bagasse biomass had a calorific value of 2947 kCal/kg. Meanwhile, the coal used in PLTU Rembang has a calorific value of 4286 kcal/kg. The SO2 emission test results decreased in the Co-firing test of 1.25% sugarcane bagasse and increased in the Co-firing test of 2.5% sugarcane bagasse compared to the 100% coal test, while the NOx emission test results produced during the co-firing test firing 1.25% and 2.5% sugarcane bagasse biomass has a lower value than using 100% coal. The cost of co-firing electricity production from sugarcane bagasse biomass is 1.25% and 2.5% cheaper than the cost of producing 100% coal electricity. To reduce electricity production costs, the sugarcane bagasse biomass co-firing scheme needs to be emphasized by referring to HPT determination in accordance with PLN Perdir No.0004/DIR/2022, so that co-firing electricity production costs can be more economical.
Valuasi Ekonomi Nilai Jasa Hutan: Sebuah Literature Review
Authors: Zulfia Memi Mayasari  , Fadilah Fadilah , Reflis Reflis , Satria Putra Utama  , Mustopa Ramdhon
Published: March 2024

Forests are terrestrial ecosystems that are mostly covered with trees and dominate almost the entire land surface of the earth. Forests play an important role in ecology, social, economic and environmental aspects. Forests are useful as producers of environmental goods and services. The benefits of forests as producers of goods such as wood, rattan, medicinal plants, fruit and so on are clearly visible and immediately felt. However, other benefits of forests as producers of services such as absorbing carbon, producing oxygen, regulating water management, preserving ecosystems, preventing erosion and others whose benefits can be felt but not seen sometimes receive less attention from policy makers because they are not felt directly. in economics. In fact, these indirect benefits greatly influence the quality of the environment and are very beneficial for humans and other living creatures. This article provides an overview of the indirect benefits of forests through a review of several literature. This literature review shows that the indirect benefits of forests, especially as carbon absorbers and oxygen producers, make the largest contribution to calculating the total economic value, so that policy makers need more attention in managing forests so that they remain sustainable.
Autekologi sebagai Tahapan Awal Rehabilitasi Ekosistem Mangrove Cuku Nyinyi, Desa Sidodadi, Kecamatan Teluk Pandan, Pesawaran
Authors: Chalida Syari  , Budhi Agung Prasetyo  , Mohammad Ashari Dwiputra
Published: March 2024

The presence of mangroves tends to decrease every year, one of the reasons being degradation due to land cultivation. Mangrove rehabilitation activities are crucial to maintain the mangrove ecosystem sustainability. Cuku Nyinyi Mangrove located in Sidodadi Village, Teluk Pandan District, Pesawaran Regency. This ecosystem plays a vital role for both resident and migratory wildlife, living among the roots of mangrove trees. This research represents the initial phase of mangrove rehabilitation activities, focusing on autecology, which includes the analysis of reproductive patterns, normal hydrological patterns, and the biophysical condition of the mangrove ecosystem. The study utilizes primary and secondary data collection from three different mangrove zones. The sampling technique involves the transect line spot method. The reproductive pattern of mangroves in all three zones of Cuku Nyinyi Mangrove is dominated by the Rhizophora sp., with propagules as the type of seeds. The normal hydrological pattern for the tidal zone type is consistently inundated with a tree height ranging from 1.6 meters to 7 meters. The biophysical condition of the mangrove ecosystem in the three zones shows a salinity range from 25 to 33 ppt, temperature ranging from 25 °C to 29 °C, and pH levels from 7.2 to 7.8.
Uji Validitas dan Reliabilitas Kuesioner Tipe Chronotype pada Remaja
Authors: Resti Kurnia Triastanti  , Arini Hardianti
Published: March 2024

Obesity can have a negative impact on health, and chronotype, which includes an individual's preference for bedtime, wakefulness, eating, and other activities, becomes a relevant factor in this context. Chronotype was studied using the Eveningness-Morningness questionnaire developed by Horne & Ostberg (1976), in the questionnaire there were 34 multiple-choice question items and each question had a score which could later be categorized into 2, evening type and morning type. The validity and reliability of questionnaires are crucial aspects in research to ensure that the measurement instruments used are reliable and provide accurate results. Validity reflects the extent to which the questionnaire is able to precisely measure the variables desired by the researcher. Questionnaire validity tests can be performed by applying statistical methods such as Pearson Product Moment to evaluate the extent of correlation between questionnaire scores and related variables. Questionnaire validity tests can be performed by applying statistical methods such as Pearson Product Moment to evaluate the extent of correlation between questionnaire scores and related variables. The use of the Pearson product moment correlation coefficient in validity tests allows the determination of validity by involving a comparison between r count and r table, with values close to 1 indicating a higher level of validity. Reliability test using Alpha Cronbach on the Morningness Eveningness Questionnaire with the decision that the value of the Alpha Cronbach coefficient ≥ r table (0.6) indicates the reliability of the questionnaire. In conclusion, the Eveningness-Morningness questionnaire proved valid and reliable in measuring chronotype in adolescents aged 15-17 years.
Manajemen Risiko Pekerjaan Welding Block pada Proyek Barge Mounted Power Plant
Authors: Sahilah Amrina Rosadah  , Syifaul Lailiyah  , Denny Ardyanto  , David Nur Taufiq
Published: March 2024

Occupational diseases and occupational accidents occur frequently in Indonesia, but are still not well recorded. Welding is a process carried out to form joint parts of the ship's hull. Types of dangers that occur as a result of welding include exposure to ultraviolet and infrared radiation, inhalation of fume in welding, fire, electric shock. The aim of this research is to identify occupational health and safety risks in block welding work on the Barge Mounted Power Plant (BMPP) project. The research method used in this research is descriptive qualitative analysis using the Job Hazard Analysis method. The results of the research show that every work step process carried out by welding workers has the potential for danger which can cause work accidents or work-related diseases. There are five welding activity processes which can cause danger, with the most common being the welding process activities in the inside joint block of BMPP. In conclusion, prevention and control are identified based on each activity in the entire process, especially in the work process. In the work process, prevention and control of hazardous risks is carried out using a hierarchy of control analysis.
Analisis Pengaruh Customer Perceived Value terhadap Kepuasan Pasien Umum pada Instalasi Rawat Inap Rumah Sakit Umum Daerah Kota Makassar
Authors: Mene Paradilla  , Nurfitriani Nurfitriani , Nurul Hidayah Nur  , Andi Niartiningsih
Published: March 2024

Customer satisfaction is a determinant of long-term success and survival in the health care industry and has attracted the attention of service providers in today's competitive conditions. Patient satisfaction refers to the extent to which a patient's expectations, goals, and preferences are met by a healthcare provider. This research aims to analyze the influence of customer perceived value on general patient satisfaction at the Inpatient Installation of the Makassar City Regional General Hospital. The type of research carried out was quantitative research using an observational study with a cross sectional study design, with a sample of 400 inpatients at the Makassar City Regional General Hospital. The results of the research show that patient satisfaction at the Makassar City Regional General Hospital is 47.5% with the most influential dimension on patient satisfaction from the customer perceived value variable, namely emotional value with a sig value of 0.001. The conclusion is that customer perceived value is 0.001<0.05 with a value of 43.6% which has a significant effect on patient satisfaction at the Makassar City Regional General Hospital.
Pengaruh Karakter Eksekutif, Kompensasi Eksekutif, dan Intensitas Modal Terhadap Penghindaran Pajak
Authors: Siti Mustafidah  , Hari Stiawan
Published: March 2024

The purpose of this study was to examine and obtain empirical evidence regarding the effect of Executive Character, Executive Compensation, and Capital Intensity on Tax Avoidance. In this study, tax avoidance is measured using the company's Cash Effective Tax Rates (CETR), namely the amount of tax payments divided by profit before tax. This study uses a sample of companies listed on the IDX on the Kompas 100 index for the years 2017-2021.The method of determining the sample of this research is by using purposive sampling method and also using Econometric Views (Eviews 9) version 8.0.0.0 to analyze the data. The type of research in this study is quantitative, data obtained from 7 companies that were used as research samples for (5) years, so that the total observations used were 35 companies with audited financial statements. The analysis technique used is multiple linear regression. The results of this study state that: The results of the partial test (t test) show that (1) Executive Character has no effect on Tax Avoidance, (2) Executive Compensation has a significant negative effect on Tax Avoidance, (3) Capital Intensity has no effect on Tax Avoidance , (4) that Executive Character, Executive Compensation, and Capital Intensity simultaneously have a significant effect on Tax Avoidance in companies listed on Kompas 100 in 2017-2021
Kurangnya Etika Dalam Lingkungan Keluarga
Authors: Hutabarat Nur Ayisah , Silitonga Novena
Published: March 2024

Ethics is a form of human behavior that is considered good in the eyes of humans which is a benchmark for whether someone in their environment is good or not. The family is one of the smallest social spheres owned by each individual. Although in a small scope, the relationships that are built between family members are closer and more intimate. This is none other than because the family is a group of people who are bound by blood relations. Ethics in the family is something that really underlies the life of individuals in society, because all good and bad human behavior is basically created in the family environment because an individual is born and lives his first life. in the family environment. Then the family becomes the main actor of an individual to have good ethics. The purpose of the research is to improve ethics and manners in the family environment. The researcher uses a quantitative research method in the form of a questionnaire containing 10 data given to 13 samples. After conducting the research, the research team concluded that there is still a lack of ethics in the family, especially for those who do not live with their families.
Pengaruh Perencanaan Pajak, Prudence, dan Biaya Agensi Terhadap Nilai Perusahaan (Studi Empiris Pada Perusahaan Manufaktur Sub Sektor Food and Beverage yang Terdaftar di BEI Periode 2016-2020)
Authors: Vivi Yani  , Hari Stiawan
Published: March 2024

This study aims to analyze the effect of tax planning, prudence, and agency costs on firm value. The independent variables in this study are tax planning which is measured using the effective tax rate, prudence is measured by using accrual conservatism, and agency costs are measured using free cash flow. The dependent variable in this study is firm value which is measured using price book value. This study uses descriptive analysis with a quantitative approach that uses secondary data. The population in this study is the food and beverage sub-sector manufacturing companies listed on the Indonesia Stock Exchange (IDX) in 2016-2020. The sampling technique used is purposive sampling so that the selected sample is 11 companies selected based on the sample criteria, so that a total sample of 55 companies is obtained from the total sample of 11 times the research period for 5 years. The analysis technique in this study uses statistical data regression analysis of multiple linear regression analysis. The results of this study indicate that tax planning has a negative effect on firm value, prudence does not have a significant effect on firm value, and agency costs have a significant effect on firm value.
Pengaruh Corporate Social Responsibility, Transfer Pricing Dan Koneksi Politik Terhadap Tax Avoidance
Authors: Dessy Juliana  , Hari Stiawan
Published: March 2024

Penelitian ini bertujuan untuk mengetahui dan membuktikan secara empiris pengaruh corporate social responsibility, transfer pricing dan koneksi politik terhadap tax avoidance. Jenis penelitian ini adalah kuantitatif dengan menggunakan data sekunder berupa laporan tahunan dan laporan keberlanjutan yang diperoleh dari Bursa Efek Indonesia (BEI). Teknik pengumpulan data pada penelitian ini menggunakan cara dokumentasi dan studi pustaka. Teknik analisis data yang digunakan dalam penelitian ini menggunakan regresi logistik dengan bantuan software E-views versi 9 untuk pengolahan data. Populasi dalam penelitian ini pada perusahaan indeks kompas 100 tahun 2019-2021. Teknik sampel data menggunakan teknik purposive sampling, yang dijadikan sampel penelitian adalah 15 perusahaan dengan pengamatan selama 3 tahun sehingga total data sebanyak 45 perusahaan. Hasil penelitian menunjukkan bahwa secara simultan corporate social responsibility, transfer pricing dan koneksi politik berpengaruh terhadap tax avoidance. Sedangkan secara parsial transfer pricing dan koneksi politik berpengaruh terhadap tax avoidance, sedangkan corporate social responsibility tidak berpengaruh terhadap tax avoidance.
Pengaruh Pajak Daerah, Retribusi Daerah, Laba BUMD, Lain-Lain yang Sah Terhadap Pertumbuhan Ekonomi
Authors: Aenun Siri  , Muhammad Ridwan
Published: March 2024

This study aims to determine the effect of local taxes, regional levies, BUMD profits, other legitimate PAD on economic growth empirical studies at district and city BPS in Banten Province in 2016-2020. This type of research is quantitative research. the dependent variable used in this study is economic growth and the independent variables in this study are local taxes, regional levies, BUMD funds and other legitimate PAD. The research used in this study is the district / city in BPS (Central Bureau of Statistics). The data analysis used is panel data regression analysis. The cross section data in this study were 8 districts/cities in the province of Banten and the time series data in this study was from 2016 to 2020 using the saturated sample method. All data used were entered in a computer statistical program, namely E-Views 9 for testing. The results of the study can be concluded that local taxes, regional levies, BUMD profits and other legitimate PAD simultaneously have a significant effect on economic growth in Banten Province 2016-2020. The results of the study show that significantly local taxes, regional levies, BUMD profits and other legitimate PAD have no effect on economic growth.