bluuebunny/crossref_metadata_2025 huggingface dataset:
Valorization of organic waste as biosorbents for wastewater treatment
Authors: Tang Kuok Ho Daniel
Published: December 2024

With increasing population and waste generation, organic waste disposal has presented an unprecedented challenge. Valorization of the waste for wastewater treatment emerges as a feasible way to recycle or upcycle the waste. Agricultural and non-agricultural waste has been successfully converted into biosorbents to remove various pollutants. Through reviewing 126 papers, this review aims to provide a comprehensive overview of the effectiveness and mechanisms of biosorbents from organic waste in adsorbing different organic and inorganic waste. Most recent studies have focused on using biosorbents to remove dyes, pharmaceuticals, and heavy metals. The biosorbents were synthesized primarily through drying and pulverization, or pyrolysis. Some biosorbents have been chemically treated with acids, alkalis, or salts to increase their surface functional groups. Furthermore, different biomass materials have also been combined to synthesize biocomposite sorbents. The extraction of lignocellulose and chitin from biomass as biosorbents is also common. Biosorption occurs via chemisorption and physisorption, with the former more prevalent among organic pollutants and the latter among inorganic pollutants. The Langmuir isotherm model, which indicates monolayer sorption, and the pseudo-second-order kinetic model, which implies chemisorption as rate-limiting, best describe most of the biosorption data. Biosorption is governed mainly by pH, temperature, initial pollutant concentrations, dosage and size of biosorbents, and contact time. This review highlights the need to standardize optimization procedures and develop cost-effective and scalable biosorption systems. It highlights the potential of biosorbents, especially biochar, as potential substitutes for activated carbon in the column adsorption process of tertiary wastewater treatment.
The Effect of Snowball Throwing Cooperative Learning Assisted by PhET Simulation on Students' Physics Learning Outcomes and Responses on Heat Material
Authors: Mashitoh Nidya Nur , Indrawati Indrawati , Nuraini Lailatul
Published: December 2024

In an effort to increase student involvement and maintain the diversity of models in the teaching and learning process, a variety of learning models are needed. The combination of a snowball throwing model assisted by PhET simulation can provide a more interactive and in-depth learning experience for students. The purpose of this research is twofold: first, to examine the effect of the snowball-throwing cooperative model assisted by PhET on learning outcomes and learning responses of physics students in high school. This research used pseudo-experimental research, known as a pseudo-experiment with a quantitative approach. The population in this study was SMAN Rambipuji. The sample used was grade 11 students. Sampling in the study used cluster random sampling and homogeneity testing, constituting the research sample as an experimental class and a control class. This research shows a significant increase, namely in the value of Asymp. Sig. (2-tailed) 0.000 < 0.05 on the physics learning outcomes of high school students who use the cooperative snowball throwing model assisted by PhET simulation. Apart from that, there was a significant difference between the cognitive, affective and conative dimension scores of the experimental group students compared to the control group. This shows that students have a better understanding of the material, high learning motivation, and the ability to actively ask and respond to questions when using the snowball-throwing cooperative model assisted by PheT simulations on learning outcomes and responses to physics learning.
DESIGN ANALYSIS OF GEOTEXTILE WALL ON THE EDGE OF BARITO RIVER, TEWEH TENGAH DISTRICT, NORTH BARITO REGENCY, CENTRAL KALIMANTAN
Authors: Dillanisyia Rizqa , Rusdiansyah Rusdiansyah
Published: December 2024

The North Barito Government wants to build a green space on the edge of the Barito river, Muara Teweh City. So to realize this desire, the surface of the riverside which was originally sloping needs to be made into an upright slope as high as 18 meters. However, due to high embankment conditions and steep slopes, there is a potential for landslide and settlements. Solutions are needed to minimize this potential, one of which is by building a retaining wall reinforcement construction on the slopes.Reinforcement construction on the upright slopes used is geotextile wall. This design begins with collecting subgrade data in the field and laboratory, which is then visualized in the form of stratigraphy. After that, determine the type of embankment soil, loading and the type of geotextile that will be used in the design. Then proceed with internal stability calculations to find out the distance and length of the embedded geotextile and external stability calculations to determine safety against overturning, shearing, and bearing capacity. The last step is to calculate the overall stability using GeoStudio 2012 software to obtain the safety factor of the design.Based on the results of the analysis, it is shown that the woven geotextile with the Stabilenka GTW 150/45 type produced by HUESKER is suitable for reinforcement of high upright slopes. Based on the calculation of the internal stability of the geotextile,it takes 23 layers consisting of 4 layers with Sv = 1.5 m and L = 32 m, 5 layers with Sv = 1 m and L = 30 m, 6 layers with Sv = 0.5 m L = 28 m, and 8 layers with Sv = 0.5 m and L= 25 m. The results of the calculation of external stability for overturning stability obtained SF 23.98 > 2, for shear stability obtained SF 1.633 > 1.5, and the bearing capacity of the soil obtained SF 4.38 > 3. Keywords : Geotextile wall, slope stability.
THE EFFECT OF STREET VENDORS ON TRAFFIC CHARACTERISTICS ON-ROAD SECTION WITH TYPE 2/2 UD (CASE STUDY OF JL. JENDRAL SUDIRMAN IN BANJARMASIN)
Authors: Febriany Nisvia , Radam Iphan F.
Published: December 2024

The activities reviewed were street vendor activities in the Taman Siring 0 Km area of Banjarmasin, precisely on the edge of Jl. Jendral Sudirman with the length of the road used by street vendors along ±140 meters with a shoulder width of ±1 meter and a road body width of ±1 meter. The activities of street vendors are quite influential on the performance of traffic flow. As a result of the activities of street vendors in Taman Siring in the form of increasing traffic density and speed so that it can cause congestion. The purpose of this study was to determine the influence of street vendor activities on the traffic flow of Jl. Jendral Sudirman. The research conducted was a field survey to find volume and speed data on road sections. The survey was conducted on two conditions, namely conditions with the presence of street vendors and conditions of absence of street vendors. The point is to see the magnitude of the influence.The calculation used is by conventional methods, and the best model relationship is obtained using the Greenshield model. From the calculation results, there was a slight decrease in the maximum volume of 2.41%, at the average speed there was a decrease of 6.64%, and the maximum density increased by 4.53%.  Keywords: Traffic Characteristics, Road Performance, Street Vendors
PERFORMANCE ANALYSIS TUGU KETUPAT KANDANGAN II ROUNDABOUT
Authors: Nurin Majdina , Arsyad Muhammad
Published: December 2024

A roundabout is a type of intersection in which there is a circular island in the middle where the movement of the intersection is replaced by a weaving, distracting vehicles from straight traffic and slowing it down. Roundabouts have the advantage of slowing all passing vehicles and warning of the danger of collisions with other vehicles. There is a transition where special vehicles must use the by-pass road, resulting in traffic on Jl. Al-Falah – Brigjen H.M. Yusi increased . Based on these conditions, an analysis of the performance of the Tugu Ketupat Kandangan II roundabout was carried out to determine the performance of the roundabout in current and future conditions. In this study, roundabout geometric data and a traffic volume survey were collected which was carried out 1 day from 06:00 - 20:00 WITA. In addition, the analysis was carried out using the calculation method of the Manual Kapasitas Jalan, 1997 to determine the degree of saturation, queuing opportunities, delays, and capacity values found at the Tugu Ketupat Kandangan II roundabout. The current roundabout performance analysis reveals that the roundabout saturation value is 0.653. The capacity values for AB = 4310 pcu/hour, BC = 3781 pcu/hour, CA = 3440 pcu/hour. The value of the degree of saturation for AB = 0.471, BC = 0.653, and CA = 0.495. The average delay value is 4 sec /pcu. The queue probability value is 17%. For the next year's roundabout performance, the specified parameters are not fulfilled and the existing traffic flow can not be served. The research shows that several alternative solutions are needed and evaluated every few years to support the smooth, safe, and orderly traffic at the Tugu Ketupat Kandangan II roundabout. Keywords: Degree of saturation, queue probability, delay, roundabout performance analysis
ANALYSIS OF THE IMPACT OF CLIMATE VARIABLES ON BANJARBARU CITY RAINFALL
Authors: Dawamudin Amin
Published: December 2024

Changes in weather and climate have a negative impact on agricultural production, fisheries, and development in Banjarbaru City. An important indicator of weather and climate is rain. Using multiple regression analysis modeling, the goal of this study was to determine the magnitude of climate influences (air pressure, air temperature, air humidity, and wind speed) on rainfall, as well as the relationship between free variables and bound variables. A regression and significance analysis was performed using the SPSS program, with data on daily climate variables averaging 5 years. Multiple linear regression equation modeling was obtained after analysis:  = 5063,775 - 5,235X1 + 0,633X2 + 2,930X3 – 0,328X4. And for significance analysis, partial test results were obtained where the significance values of air pressure and air humidity were respectively 0,041 and 0, 038 less than the values  = 5%, meaning that they significantly affect the high and low rainfall, and from the simultaneous test results, all variables simultaneously affect the rainfall because the significance value is 0,017 less than the value  = 0,05. Keywords: Climate Influences, Rainfall, Regression, Significance, Banjarbaru
ANALYSIS OF THE INFLUENCE OF CHANNELS DISTANCE ON WATER BALANCE CALCULATIONS IN THE LIANG ANGGANG PROTECTED FOREST AREA BLOCK 1
Authors: Maulana Muhammad , Novitasari Novitasari
Published: December 2024

Peatland is an ecosystem that easily catches fire when dry. The highest number of forest fires was found in Banjar Regency, Banjar Regency, and Tapin Regency. One of the factors causing peatland fires in the Liang Anggang Protected Forest, apart from human activity, is the occurrence of drought, where more water is lost than water that enters the land. This study aims to analyze the water balance with the influence of the drought index on peatlands that are fibers and have canals based on the equation in Thompson's study (2014). The data used in the water balance research are monthly rainfall data, and monthly temperature data from 2000 to 2021 obtained from the Class II Meteorological Station Syamsuddin Noor Banjarmasin, then forest intercept is 16.4% based on research from Vernimmen (2007), calculations evapotranspiration (ET0), and storage changes in the unsaturated zone (Δϴ) with the modified Keech-Byram Drought Index value approach with the condition of the physical properties of fibers peat soil. The highest rainfall occurred in January 2021, 898.7 mm/month. The maximum average evapotranspiration (ET0) occurs in February, with a value of 100.3 mm/month. Based on the calculation of the water balance in the Liang Anggang Protected Forest Block 1, there was a water deficit from July to October, with the peak of the water deficit occurring in September, which was 65.6 mm/month and the peak of the water surplus in February, of 211.8 mm/month. Keywords: Interception, Evapotranspiration, Water Balance, Liang Anggang Protection Forest
EFFECT OF FOUNDATION DEPTH AND DIMENSIONS ON PILE FOUNDATION DESIGN HOLD LATERAL FORCE (Case Study: Foundation of the Customs Building in Banjarmasin)
Authors: Hidayah Nurul , Rusdiansyah Rusdiansyah
Published: December 2024

The function of the foundation is very important in building construction. Foundation planning is intended so that a load can be supported up to a certain safety limit and the maximum load that may occur. The upper structure is supported by the lower structure as a foundation that interacts with the soil and will provide security for the superstructure. This plan analyzes the bearing capacity of the pile foundation due to lateral forces. The method is the Brinch Hansen method to determine the value of the lateral bearing capacity of the permit and the Allpile V 7.3B computer application method to determine the results of calculating the lateral deflection with variations in the length of the pile 20m, 25m, 30m, 34m, 40m and variations in the dimensions of the circular pile. D30, D35, D40 and square 30x30, 35x35, 40x40. Based on the calculation analysis, the square cross-section produces a larger permit lateral bearing capacity than the circular cross-section, while the lateral deflection produced by the square section is smaller than the circular section.Keywords: Pile Foundation, Lateral Load, Deflection, Brinch Hansen Method, Allpile V 7.3B Computer Application Method
ANALYSIS OF MARSHALL CHARACTERISTICS WITH FLY ASH MATERIAL ON STONE DUST SUBSTITUTION AS FILLER IN HRS-WC MIXTURE
Authors: Azcharyah Feronia , Lestari Utami Sylvia , Yasruddin Yasruddin
Published: December 2024

Lataston asphalt mix is a thin layer of asphalt concrete that is often used on light-traffic roads because it produces roads with good flexibility and durability. An economical way of doing this is to vary the asphalt mix, especially by modifying fillers, to improve the quality of the road pavement and asphalt mix. So an alternative was found, namely the use of fly ash residue from the Asam-Asam PLTU. The filler material for fly ash which will be varied with the filler for stone dust plays a role in filling the voids between aggregate grains in the Hot Rolled Sheet-Wearing Course (HRS-WC) mixture with each predetermined composition. This study aims to determine the characteristics of the HRS-WC asphalt mixture with the utilization rate of rock dust and fly ash fillers. To find out the characteristics of an HRS-WC mixture with mixed variations of the two fillers, the method that will be used is the Marshall Test by analyzing each characteristic of the parameters to be obtained by 2018 Revised Highways Specifications II the Year 2018 to make the mixture hot asphalt. The bitumen content used in this study was 4,5%, 5,0%, 5,5%, 6,0%, and 6,5%, with varying levels of fly ash and rock dust filler, namely 100%: 0%, 80%: 20%, 50%: 50%, 20%: 80%, and 0%: 100%. The results of the Marshall characteristic calculation analysis show that the asphalt mixture with lataston is very influential in the substitution of rock ash as a fly ash filler. Lataston asphalt mixture tends to be stiff and easily cracked because it has a high stability value of 1,615.38 kg and the lowest flow value of 4,10% in the 100% fly ash filler variation. At optimal asphalt content, the HRS-WC asphalt mixture for each variation in the range of fly ash and rock dust produces a decreased asphalt content because the water absorption capacity of rock dust is less than that of fly ash filler, so less asphalt is needed. In addition, the HRS-WC asphalt mixture also shows increasing durability, along with the replacement of rock dust filler with fly ash filler, which can be seen from the increased stability values, MQ values, and VFB values.Keywords: HRS-WC Micture, Fly Ash Filler, Marshall Characteristics
DEVELOPING THE ABILITY TO RECOGNIZE CAUSE AND EFFECT USING THE PROJECT BASED LEARNING MODEL AND SCIENCE EXPERIMENT METHOD IN GROUP B CHILDREN OF KHADIJAH PLUS ISLAMIC KINDERGARTEN BANJARMASIN
Authors: Napisah Nurul Laila , Anggreani Chresty
Published: December 2024

The problem in this study is the low ability of children to recognize cause and effect, this is due to learning activities using LKPD and the use of models and methods that are less varied and monotonous. This study aims to describe the activities carried out by teacher and analyze children's activities, analyze the results of the development of the ability to recognize cause and effect. The data collection are observation, interview and documentation. The subject used in the study was group B of Khadijah Plus Islamic Kindergarten Banjarmasin. This research was carried out in two cycles and each cycle consisted of three meetings. The results of the study show that using the project based learning model and science experiment methods can improve children's ability to recognize cause and effect, as evidenced by the teacher's activity in the first cycle obtained an average score of 72 with good criteria, children's activities obtained a percentage of 74% of the active criteria, then for the ability to recognize cause and effect obtained a percentage of 72% of the criteria developed as expected. Then in the second cycle, the teacher got an average score of 84 with very good criteria, children's activities obtained a percentage of 98% of the very active criteria, then for the ability to recognize cause and effect obtained a percentage of 100% of the very good development criteria (BSB).
EFFECTIVENESS OF TEACHER PERFORMANCE IN THE CHILDREN'S DEVELOPMENT COGNITIVE ASPECT
Authors: Cinantya Celia , Rafianti Wahdah Refia , Safitri Safira Eka
Published: December 2024

The problem in this research is the low level of children's activity and the underdeveloped cognitive development of children in group A. This research approach uses qualitative research with the type of classroom action research, carried out in 4 meetings, the research setting was with the A2 group of Insan Azkia Kindergarten Banjarmasin, totaling 12 children (8 boys and 4 girls). Data collection techniques use observation, documentation, and interviews as well as data analysis using cross tabulation. The aim of this research is to describe teacher activities and analyze children's activities as well as children's cognitive aspects of their abilities. The results of this research show that teacher activities reach the very good category, children's activities reach the very active category, and children's cognitive aspects reach the very well developed category. It is recommended for future researchers that it can be used as information material, as well as for school principals and teachers, it can be used as input to improve children's learning
Training In Making Educational Posters Using The Canva Application for IPS Education Students FKIP Lambung Mangkurat University
Authors: Handy Muhammad Rezky Noor , Mutiani Mutiani , Ilhami M. Ridha , Triyono Sigit , Rusmaniah Rusmaniah , Savitri Siti Nur Laila
Published: December 2024

This article describes training in making educational posters using the Canva application for Social Sciences Education students, FKIP ULM. The method used in this article is community service activities carried out on March 13-14, 2024, at the Social Sciences Education Writing Laboratory FKIP ULM, then using 1) problem discovery observation stages, planning stages and implementation stages; 2) presenting data in the descriptive form; and 3) drawing conclusions based on activities to describe the research results systematically. In the results analysis section, the author uses literature studies to add insight, which is also supported by the results of interviews with training activity participants. Service activities are carried out in two activities. First, presentation and discussion related to making educational posters, from the definition to the steps in making a poster. Second, the practice of making posters via the Canva application by social studies education students using devices such as laptops and cellphones with a focus on the themes of ethnopedagogy and social studies education.
Implementation of Digitalization Marketing for UMKM in Manarap Lama Village
Authors: Sari Raihanah , Nugroho Putro Herry Porda , Subiyakto Bambang , Rusmaniah Rusmaniah , Suwarjo Suwarjo , Awaliyah Hijatul
Published: December 2024

Village Manarap Lama is one of the sasirangan producing villages, which is why this village is often also called sasirangan village. Results processed sasirangan usually for sale traditionally through several shops located in Manarap village itself starting from old, middle and new Manarap. This of course makes the scope of sales narrow and only buyer Which come To the store just Which know product they And the impact to income UMKM Alone Which No increase, so that required a solution in the form of training on digital marketing so that UMKM from Sasirangan village in Manarap Lama village can introduce their products to potential consumers both online and online. online or offline with the aim of getting far-reaching benefits more big from previously. Activity devotion done in a way stare advance directly with MSME actors in Sasirangan village in Manarap Lama Village, Banjar Regency. They given training menegai application digitalization marketing covers sales via social media such as WhatsApp, Twitter, Instagram, Facebook and marketplace, as well as creating interesting videos to introduce their products with help a blogger. Results activity This form making website by representatives of the Manarap Lama Village community which contains marketing of their products form Sasirangan Cloth, Good Which Still in the form of raw materials nor Sasirangan Cloth Which Already processed into clothes.
Journal Writing Assistance for IPS Teacher
Authors: Syarifuddin Syarifuddin , Putro Herry Porda Nugroho , Jumriani Jumriani , Handy Muhammad Rezky Noor , Ilhami M. Ridha , Ramadhani Muhammad Aqiela
Published: December 2024

Professional in the field of education, it is important for teachers to have various skills, including the ability to write scientific papers. Writing scientific papers not only helps teachers achieve career advancement such as promotions and recognition, but also provides opportunities to gain awards and recognition for their work. However, it is unfortunate that many teachers do not have experience writing scientific articles that are published in journals or being speakers at national or regional seminars. To overcome this, the community service program implemented is training and mentoring for social studies teachers at MGMP Barito Kuala Regency. The steps in this activity include coordination, conveying information, mentoring and evaluation. The results of this program show that the majority of social studies teachers in Barito Regency still do not understand and master the techniques for writing scientific papers in accordance with applicable regulations. Apart from that, participants also stated that one of the main difficulties they faced in compiling articles was difficulty in starting research due to a lack of ideas, which in turn was caused by a lack of reading and writing culture.
Efisiensi konsumsi bahan bakar berdasarkan kemiringan jalan angkut overburden: studi kasus PT Bhumi Sriwijaya Perdana Coal
Authors: Tribuana Evid , Megasukma Yosa , Ericson Ericson , Adhitya Bagus
Published: December 2024

PT Bhumi Sriwijaya Perdana Coal (BSPC) adalah perusahaan pertambangan yang mana dalam pengangkutan overburden menggunakan metode trucking dengan biaya pengangkutan mencapai 40% dari total biaya penambangan. Rerata konsumsi bahan bakar alat angkut pada bulan Januari hingga April 2023 melebihi standar perusahaan yakni 14,28 l/jam dari perencanaan yaitu 13,5 l/jam. Berdasarkan pendekatan regresi linier, faktor yang kuat mempengaruhi konsumsi bahan bahan bakar dalam studi ini adalah kemiringan jalan dengan nilai koefisien determinasi sebesar 0,99. Selama pengamatan pada bulan Mei 2023, terdapat 4 ruang jalan yang menyebabkan tingkat konsumsi bahan bakar lebih dari rencana sehingga menghasilkan rerata 13,7 l/jam. Simulasi perubahan kemiringan jalan yang melebihi 8% dilakukan sehingga diperoleh prediksi konsumsi bahan bahan bakar menjadi 13,28 l/jam. Perbaikan kemiringan jalan akan menghemat sebesar 0,4 l/jam (120 l/bulan) penggunaan bahan bakar unit dump truck.
Estimasi sumberdaya dan cadangan batuan ultrabasa Desa Awang Bangkal Barat
Authors: Maulana Robby , Noor Rudy Hendrawan , Arief Muhammad Zaini
Published: December 2024

Awang Bangkal Barat merupakan daerah perbukitan yang memiliki potensi batuan berharga. Foto udara diolah untuk proses ortomosaik foto dan membangun DEM. Software yang digunakan untuk memproses data spasial dan estimasi adalah ArcGIS dan Surpac. Hasil estimasi sumberdaya pada sembilan IUP di daerah penelitian berturut turut soil dan fresh rock antara lain CV BBB: 18.725 m3 dan 365.900 m3, CV Bumi Sejahtera: 42.875 m3 dan 1.801.000 m3, CV Habibi: 14.950 m3 dan 194.950 m3, CV PP: 28.250 m3 dan 2.703.425 m3, CV SR: 24.125 m3 dan 672.375 m3, CV MMK: 34.200 m3 dan 3.644.400 m3, KP BUB:  27.800 m3 dan 1.651.025 m3, PT H.M. Taher: 20.675 m3 dan 1.051.200 m3, PT JB: 20.675 m3 dan 1.051.200 m3. Hasil estimasi cadangan berturut turut soil dan fresh rock antara lain CV BBB: 23.301 m3 dan fresh rock 325.900 m3, CV BS: 42.750 m3 dan 1.063.925 m3, CV Habibi: 15.625 m3 dan 108.475 m3, CV PP: 23.675 m3 dan 307.225 m3, CV SR: 9.650 m3 dan 47.325 m3, CV MMK: 21.825 m3 dan 598.675 m3, KP BUB: 47.325 m3 dan 737.700 m3, PT H.M. Taher: 21.575 m3 dan 265.525 m3, PT JB: 19.900 m3 dan 179.950 m3.
Kajian teknis peledakan overburden di PT Borneo Alam Semesta jobsite PT Pro Sarana Cipta
Authors: Widiyanto Bimo Restu , Saismana Uyu , Hakim Romla Noor
Published: December 2024

Kegiatan peledakan atau memberaikan batuan serta pengangkutan hasil pemberaian adalah bagian terpenting dari suatu kegiatan penambangan. Material yang bersifat berai cenderung akan lebih mudah digali daripada material yang masih bersifat kompak. Oleh sebab itu perlu mengetahui perbandingan geometri peledakan dan hasil fragmentasi dari metode peledakan C.J. Konya dan R.L. Ash serta merekomendasikan geometri peledakan yang akan digunakan oleh PT Borneo Alam Semesta agar memenuhi target pembongkaran material overburden. Metode yang dapat digunakan untuk pembongkaran material adalah C.J. Konya dan R.L. Ash dengan memperhitungkan geometri peledakan dan hasil fragmentasi sehingga dapat dibandingkan antara dua metode tersebut. Setelah melakukan perbandingan dua metode antara C.J. Konya dan R.L. Ash maka dapatkan disimpulkan bahwa metode peledakan C.J. Konya lebih sesuai untuk direkomendasikan karena menghasilkan fragmen yang lebih baik dengan ukuran rata-rata yaitu 33,05 cm dan persentase batuan lolos 71 %, dibandingkan ukuran rata-rata fragmen dengan metode R.L. Ash yaitu 48,35 cm dan persentase ukuran batuan lolos 47%.
Validity of Physics Module Development in Electronics Subject Project-Based Operational Amplifier Material
Authors: Nehru Nehru , Pujaningsih Febri Berthalita , Arunde Beta Olivia
Published: December 2024

This study aims to develop teaching materials in physics learning modules in project-based operational amplifier material electronics courses that are valid for use. This type of research is development research with a research and development method and a 4-D development model that includes four stages: define, design, develop, and disseminate. However, this research is limited to the development stage. The test subjects in this study were two validators, material expert validators and media experts. The data collection instrument is a validated questionnaire. The results of the questionnaire obtained from this development research are as follows: (1) The validity of the physics module in the project-based operational amplifier material electronics course is declared very valid with a percentage of (85%) in terms of material aspects. (2) The validity of the physics module in the project-based operational amplifier material electronics course is declared very valid, with a percentage value of 86% in terms of media aspects. So, it can be concluded that the physics learning module in the project-based operational amplifier material electronics course is valid for use as teaching material. This study implies that the module developed can serve as a supplement to educational activities.
Fostering Critical Thinking through PBL-SSI in Renewable Energy Topic among High School Students
Authors: Utami Amelia , Syam Muliati , Zulkarnaen Zulkarnaen
Published: December 2024

Fostering critical thinking stands out as a paramount objective in learning, warranting diligent cultivation and refinement. This study uses a Problem Based Learning (PBL)- Socio-Scientific Issues (SSI) learning model for renewable energy materials to enhance students' critical thinking skills. This research utilized a quantitative method with a one-group pretest-posttest design, and the sample comprised 33 students from SMAN 3 Samarinda. Data collection involves assessments with ten questions in the form of essays. Conclusions from the research show that using PBL with SSI learning models on renewable energy can foster students' capacity for critical thinking. After the learning process, 21 out of 33 students were classified as critical, and 12 out of 33 students were classified as very critical, with an average N-Gain value of 0.69, which is included in the medium category, and a paired (2-tailed) T-Test Sig value of 0.000, which indicates there is a significant influence from the use of PBL-SSI. This research provides insights into how teachers might use this approach in the classroom to help students become more adept critical thinkers in the twenty-first century by giving them resources to broaden their critical thinking skills.
Application of The Problem-Based Learning (PBL) Model Using The Education for Sustainable Development (ESD) Approach to Students' Critical Thinking Ability in Global Warming Material
Authors: Rizqulloh Mochamad Raihan Ahnaf , Rusnayati Heni , Danawan Agus
Published: December 2024

The rapid development of the Industrial Revolution 4.0 era requires humans to withstand rapid changes. Mastery of 21st-century skills and sustainability awareness becomes crucial as society in this era is required to sustain Natural Resources (NR) and develop Human Resources (HR) preparedness to adapt. Critical thinking is one of the competencies that students must possess in the 21st century and is also a key competency in ESD that can help students realize the concept of sustainability awareness in the Industrial Revolution 4.0 era. A learning model that can develop students' critical thinking skills is the PBL model because thinking and problem-solving skills can be developed when students do it themselves, explore, and transfer the complexity of existing knowledge. Therefore, this study aims to determine the application of the PBL model with an ESD approach to students' critical thinking skills on global warming material. This research uses the quantitative method of pre-experimental designs with the One Group Pre-test-posttest design. The subjects of this study were 38 students at a public high school in Bandung. The sample was taken using the convenience sampling method on 11th-grade science students in the even semester of the 2022/2023 academic year. The instruments used in this study were a critical thinking skills test and a sustainability awareness questionnaire using the Guttman scale. The data obtained were processed using the Normalized Gain (N-Gain) test for critical thinking skills and the response percentage for the sustainability awareness questionnaire. The results showed increased students' critical thinking skills N-Gain of 0.524 in the medium category. Meanwhile, the sustainability awareness questionnaire profile after learning activities showed a total percentage of 73.94% in the high category.
Analysis of Science Literacy Skills Among 11th Grade Students on Kinematics Material
Authors: Rahmah Oliv Jumani , Usman Usman , Wahyuni A Sri Astika , Setiawan Trisno
Published: December 2024

This is survey research aimed at determining the profile of science literacy skills among XI students at State High School 4 Makassar on learning physics in general and based on gender. The population in this study is the entire Class XI of physics students at State High School 4 in Makassar school year 2023/2024 of 3 classes, while the sample of 68 students was selected using purposive sampling. The instruments used in this research to measure the content, knowledge, and competency dimensions were tests, while the attitude dimension was measured using a questionnaire. The data obtained from this research were analyzed using descriptive statistics. The research results showed that the literacy of the scientists in the context and knowledge dimensions was in the middle category, the competence dimensions were in the lower category, and the attitude dimensions were in the high category. When reviewed from a gender perspective, the average literacy score of female students is superior in context implications, while male students are superior in knowledge, competence, and attitude.
An Analysis of Readiness for Implementing the Merdeka Curriculum in Physics Education
Authors: Mutmainna Mutmainna , Usman Usman , Helmi Helmi , Setiawan Trisno
Published: December 2024

This research focuses on implementing the Merdeka Curriculum, which is still relatively new and requires further adaptation in its execution. To ensure effective application, readiness for implementing the Merdeka Curriculum is crucial for each school. This study assesses the readiness for implementing the Merdeka Curriculum in physics education at high schools (SMAN) in Soppeng Regency. The research employed a descriptive approach. The findings indicate that the readiness for implementing the Merdeka Curriculum regarding teacher preparedness was 93.45%. The readiness of the teaching modules was 77.30%, which met the necessary components, while the readiness of facilities and infrastructure was 97.38%, indicating adequate resources for the curriculum’s implementation. Based on these findings, it can be concluded that high schools in Soppeng Regency were generally prepared to implement the Merdeka Curriculum for physics subjects. However, the readiness of the teaching modules was the lowest compared to teacher preparedness and facilities readiness. This could be attributed to the insufficient training that teachers had received on the Merdeka Curriculum. The implications of this research suggested the need for increased teacher training, particularly in preparing teaching modules, to ensure effective learning. Additionally, this research contributed to the literature by thoroughly examining the readiness to implement the Merdeka Curriculum, including teacher readiness, teaching modules, and facilities. Research has yet to comprehensively explore these aspects together, as most studies focus either on teacher readiness or the obstacles in implementing the Merdeka Curriculum.
Analysis of Students’ Creative Thinking Skills and Learning Motivation in Science Subjects at State Primary School
Authors: Utomo Rachmat Karno , Roshayanti Fenny , Nizaruddin Nizaruddin , Hayat M Syaipul
Published: December 2024

Teachers have to offer learning opportunities that encourage the development of students, given the students’ relatively limited creative thinking skills and motivation to learn. This study aims to identify the categories of creative thinking skills and learning motivation exhibited by students in relation to each indicator within the field of electrical engineering. This study employed a quantitative descriptive approach, with a sample size of 27 students from 6 grades of SD Negeri Mangkang Kulon 02 Semarang in the 2023/2024 academic year. The data were obtained through the observation guidelines, questionnaires and document analysis, which the researchers meticulously prepared and developed. Based on the descriptive qualitative analysis, the overall rating for creative thinking skills was 68.94%, indicating a moderate level of proficiency. In the descriptive qualitative analysis, each creative thinking skills indicator achieved a maximum of 80.55%, which was classified as high, while the minimum was 60.19%, which was categorized as low. The overall motivation of the students was found to be 72.66%, which is classified as high motivation. The maximum percentage of students' motivation to learn was 79.26%, classified as high motivation, while the minimum percentage was 60.00%, considered sufficient motivation. The results of this study indicate that students at SD Negeri Mangkang Kulon 02 Semarang exhibit low levels of creative thinking skills and moderate levels of motivation in electrical engineering.
Effectiveness of E-Magazine Teaching Materials on Global Warming Materials Phase E
Authors: Putri Mutiara Duana , Hidayati Hidayati
Published: December 2024

The independent curriculum requires teaching materials with technological development innovations, including e-magazine teaching materials. E-magazine teaching materials are teaching materials in the form of electronic magazines that can be accessed using mobile phones. The advantage of e-magazine teaching materials is that presenting interesting material with pictures and videos can increase students' interest in physics. This study aims to determine the effectiveness of electronic magazine teaching materials on student learning outcomes in the global warming material phase E of SMAN 6 Padang. The type of research conducted is quasi-experimental. The design used in the study was Randomized Control Group Only Design. The population in the study is all phase E classes of SMAN 6 Padang in the 2023/2024 school year. In this study, 2 sample classes were used with purposive sampling techniques, namely the experimental and control classes. In the learning experiment class, the learning uses e-magazine teaching materials; the learning control class uses printed teaching materials at school. The research results showed that e-magazine teaching materials effectively improve student learning outcomes on global warming materials in the independent curriculum.
Development of Adventures in the World of Light (AiWoL) Comic: Understanding of the Light Concept
Authors: Aminudin Adam Hadiana , Syamsiah Endah Nur , Nabilah Fatih Najah , Amiruddin Mohd Zaidi Bin , Samsudin Achmad
Published: December 2024

This research aims to develop the Adventures in the World of Light (AiWoL) comic to understand the concept of the duality of light (as particles and waves). AiWoL tells the journey of the concept of the duality of light and is part of an Augmented Reality (AR) development project called Physics Virtual Technology Teaching Tools (PV3T). This development uses the Identify, Design, Development, Evaluation (IDDE) design. Validity sheets are given to physics, media, and conceptual psychology experts to see the feasibility of the AiWoL comic. Respondents at the evaluation stage were 39 students who had studied light waves (in the aspects of image clarity, language usage, and conceptual understanding). Meanwhile, Rasch analysis was used to identify the feasibility of the AiWoL comic based on the respondents' answers. The results showed that the instrument quality value in terms of the suitability of the physics concept (86), media feasibility (92), and psychology of conception (98) (all in the very good category). Meanwhile, the results of the Rasch analysis showed that the AiWoL comic feasibility instrument was reliable (0.94 (excellent)) and valid (56.1% (appropriate)). In addition, the AiWoL comic has aspects of Image clarity (83%), Language usage (85%), and Conceptual understanding (85%) (all in the very good category). These results also confirm no bias towards the semester and gender. Furthermore, the AiWoL comic will be used as part of the design for developing Physics Virtual Technology Teaching Tools (PV3T), which is an application based on Augmented Reality (AR).
PENGARUH CATALYTIC CONVERTER BERBAHAN ALUMUNIUM, SENG TERHADAP KEMAMPUAN REDUKSI EMISI GAS BUANG, DAN PERFORMA PADA SEPEDA MOTOR 110 CC
Authors: Isworo Hajar , Khalil Muhammad , Syahyuniar Rusuminto , Syaief Adhiela Noer , Bela Persada Anggun Angkasa , Lingga Yulima Melsipa , Artika Kurnia Dwi , Adi Setiawan Muhammad Yusuf
Published: December 2024

Masalah emisi gas buang akan terus berlangsung selama manusia menggunakan bahan bakar fosil. Emisi gas buang dapat diturunkan dengan menggunakan katalis yang terbuat dari berbagai macam material, seperti aluminium, tembaga, seng, dan lainnya. Sehingga penelitian ini dilakukan untuk mengetahui pengaruh penggunaan jenis matrial katalis alumunium dan seng terhadap emisi gas buang HC dan CO. Metode yang digunakan dalam penelitian ini dengan menguji Katalitik converter menggunakan uji eksperimental menggunakan alat uji emisi dan dyno test (uji performa mesin). Dari penelitian diketahui bahwa kadar CO dan HC  terendah pada penggunaan katalis alumunium 2 saringan dengan torsi sebesar 5.69 dan power sebesar 3,9 hp. Menurunnya emisi gas buang karena katalis alumunium dan seng terbukti efektif menurukan kadar CO dan HC. The problem of exhaust emissions will continue as long as humans use fossil fuels. Exhaust gas emissions can be reduced by using catalysts made from various materials, such as aluminum, copper, zinc, and others. So this research was carried out to determine the effect of using aluminum and zinc catalyst materials on HC and Co exhaust emissions. The method used in this research is to test the catalytic converter using experimental tests using emission test equipment and dyno tests (engine performance tests). From the research, it is known that the lowest CO and HC levels are when using  2 filter aluminum catalyst with a torque of 5.69 and a power of 3.9 hp. Reduced exhaust emissions due to aluminum and zinc catalysts proven to be effective in reducing CO and HC levels.
OPTIMALISASI WAKTU PENGISIAN DENGAN SMART DUAL CHARGER PLUG AND PLAY PADA KENDARAAN LISTRIK BERTENAGAKAN BATERAI SLA/VRLA
Authors: Nur Raybian , Barry Akmal
Published: December 2024

Tujuan dari penelitian ini yaitu untuk mengetahui perbandingan tingkat lama durasi pengecesan menggunakan charger standar dengan smart dual charger plug and play; temperatur saat pengecasan daya minimum 30 persen hingga maksimum; dan perbandingan tingkat nilai SOC dan SOH. Adapun proses pengambilan data diantaranya: Mengamati lama durasi pengecesan mulai 30 persen hingga 100 persen; Pengambilan temperatur baterai setiap 3 jam waktu pengecesan; dan pengambilan data nilai SOC dan SOH  sebelum dan sesudah pengecesan berlangsung. Hasil yang didapatkan adalah dengan menggunakan smart dual charger membuat pengisian baterai lebih efisien dibandingkan charger standar, Pengujian ini menunjukkan bahwa baterai bisa dioptimalkan dengan pengisian yang tepat, namun ada beberapa yang tetap perlu diganti karena kondisi awal yang terlalu buruk atau tidak cukup membaik setelah diisi. Kondisi baterai bisa sangat membaik dengan pengisian yang tepat, seperti terlihat pada Baterai 3 yang awalnya memiliki SOH sangat rendah tetapi menjadi baik setelah diisi. Faktor yang mempengaruhi nilai SOC adalah nilai resistansi internal, karena resistansi internal menunjukkan kemampuan baterai dalam mengalirkan arus. The aim of this research is to determine the comparison of the duration of checking using a standard charger with a plug and play smart dual charger; temperature when charging minimum 30 percent to maximum power; and comparison of SOC and SOH value levels. The data collection process includes: Observing the length of the checking duration from 30 percent to 100 percent; Taking battery temperature every 3 hours of checking time; and collecting data on SOC and SOH values before and after the test takes place. Result is that using a smart dual charger makes battery charging more efficient than a standard charger. This test shows that the battery can be optimized with proper charging, but there are some that still need to be replaced because the initial condition is too bad or does not improve enough after being charged. Battery condition can be greatly improved with proper charging, as seen with Battery 3 which initially had very low SOH but became fine after charging. The factor that influences the SOC value is the internal resistance value, because internal resistance shows the battery's ability to carry current.
PENGARUH VARIASI MERK BAHAN BAKAR, JENIS BUSI, DAN TEKANAN BAN TERHADAP PERFORMA MESIN SEPEDA MOTOR EMPAT LANGKAH
Authors: Cahyadi Wahyu Robby , Ariyanto Sudirman Rizki , Nugraha Ata Syifaâ€™ , Putra Rico Andhika
Published: December 2024

Penelitian ini bertujuan untuk menganalisis pengaruh variasi merk bahan bakar, jenis busi, dan tekanan ban terhadap performa mesin sepeda motor empat langkah. Variabel bebas yang diuji meliputi tiga variasi merk bahan bakar (Pertamax, Shell Power, dan AKR 92), jenis busi (standar, iridium, dan platinum), dan tekanan ban (28 psi, 33 psi, dan 38 psi). Metode eksperimen dilakukan pada sepeda motor Honda MegaPro PGM-FI dengan pengukuran torsi dan daya pada berbagai RPM menggunakan alat uji chassis dynamometer. Hasil penelitian menunjukkan bahwa kombinasi merk bahan bakar Shell-Super, busi platinum, dan tekanan ban 33 psi memberikan dampak positif yang signifikan terhadap performa mesin, dengan torsi dan daya yang lebih tinggi serta variasi yang lebih konsisten dibandingkan kombinasi lainnya. Penelitian ini memiliki implikasi penting bagi pengguna sepeda motor, memungkinkan mereka untuk mengoptimalkan performa kendaraan dengan memilih bahan bakar yang tepat, menjaga busi dalam kondisi yang baik, dan memelihara tekanan ban yang optimal.