bluuebunny/crossref_metadata_2025 huggingface dataset:
Women and STEM: Editorial introduction
Authors: Bryant Antony
Published: January 2025

The twentieth century has been termed the Century of Women, an era marked by significant social and political changes that began around 1900. Although by no means universal and occurring in differing sequences and at different speeds throughout the twentieth century, there were noteworthy improvements in the position of women in society encompassing extensions of suffrage, greater educational opportunities, removal of many restrictions on employment, access to healthcare including contraception and abortion, and legislation against forms of sexual discrimination. These developments were neither straightforward nor universal, and in recent times there have been many examples of these advances being curtailed and even put into reverse with the position of women and young girls deteriorating significantly.
An examination of women leaving computational STEM careers
Authors: Carbery Anna , Richardson Eve
Published: January 2025

The attrition of women in technology and computational fields, combined with the persistence of gender disparities in retention, remains a critical issue. This paper discusses the experiences and perceptions of early career female researchers to explore the underlying factors contributing to this trend. Drawing from personal experiences and interviews with peers, we explore the multifaceted reasons for women’s departure from these professions.
Problems of Ensuring the Availability and Safety of Drinking Water for The Sustainable Development of The Republic of Kazakhstan
Authors:   Karaganda University of Kazpotrebsoyuz, BAIKENOVA Gulzhan , OSPANOVA Gulnar ,   Karaganda University of Kazpotrebsoyuz, BENZ Tatiana ,   Karaganda University of Kazpotrebsoyuz
Published: January 2025

Clean and affordable water is an integral part of life. Millions of people on the planet
do not have access to clean fresh water. As you know, Kazakhstan belongs to the countries
that are largely experiencing a shortage of water resources, including due to climate change.
In conditions of scarcity and fragility of water resources, the problem of water security is considered
as a component of the national security of the country, since it combines the problems
of food, energy, climate, environmental and general human security. The purpose of the research
of the scientific article is to consider the problems of ensuring the availability and safety
of drinking water, to assess the quality of drinking water in the regions of Kazakhstan. The
problems of providing the population of the Republic of Kazakhstan with safe drinking water
are considered, the results of assessing the quality and level of drinking water supply by its
regions are presented.
Substantiation of Stability by Modeling an Array for Fixing Retaining Walls
Authors:   Kazakh Automobile and Road Institute named after L.B. Goncharov, ZHANAKOVA Raisa , SARYBAYEV Madiyar ,   NPJSC «Al-Farabi Kazakh National University»
Published: January 2025

The paper analyzes the existing methods of fastening retaining walls and their
applicability in mountainous conditions. The purpose of the study was to substantiate the
stability of the retaining wall mounting structure in mountainous conditions using the method
of modeling an array of rocks. Supporting construction justification of a suitable method for
modeling a rock massif in the field of mining. Mathematical models have been developed to
simulate a rock mass in conditions of retaining wall mounting. Numerical methods and analytical
calculations were used to conduct the study.
Design Scenarios for The Foundation of 85 m Height 400 Tons 2MW Wind Power Plant Aqmola Region
Authors:   NPJSC «Abylkas Saginov Karaganda Technical University», TLEULENOVA Gulshat , RAKHYMBEKOV Altay ,   NPJSC «Abylkas Saginov Karaganda Technical University», SHAKHMOV Zhanbolat ,   NPJSC «Abylkas Saginov Karaganda Technical University», JUMABAYEV Atogali ,   NPJSC «Abylkas Saginov Karaganda Technical University», KIKNADZE Rimma ,   NPJSC «L.N. Gumilyov Eurasian National University»
Published: January 2025

The problems in the design of foundations of wind power plants are presented. The
purpose of the article is to develop experimental and theoretical recommendations for the
calculation and design of foundations of wind power plants. A complex of theoretical, analytical,
and numerical modeling of the foundations were used: analysis of natural-climatic and
socio-economic zones of Aqmola region; collection of loads on the foundation of wind power
plants using SCAD software and estimation of bearing capacity of foundation and soil-base. In
total 3 design scenarios were adopted: slab, driven pile and bored pile foundations. The results
revealed that the highest bearing capacity is in bored pile foundation with the value of 570 kN
(960 kPa working load capacity), which is slab (580 kPa) and driven (470 kN, 770 kPa working
load capacity) pile foundation. In terms of materials resources the most efficient appeared to
be the scenario of driven pile foundation.
The Effect Of Capital Stucture, Liquidity And Company Size On Profitability In Islamic Commercial Banks In Indonesia
Authors: Dara Risma , Busra  , Yulianisah
Published: January 2025

Profitability is the company's ability to generate profits. Many phenomena that occur in this study are that there are still differences in research results between researchers, although the research is still within the scope of 1 sector with the same variables but obtains different results. The purpose of this study is to test the effect of capital structure, liquidity and company size on profitability in Islamic commercial banks in Indonesia for the period 2018-2022. The sample was selected using a purposive sampling technique, so that 45 were collected. This study uses a panel data regression analysis method. The selected model is the common effect model. The results of the study partially show that capital structure has a negative effect on profitability, liquidity has a negative effect on profitability and company size has a significant positive effect on profitability. Simultaneously shows that capital structure, liquidity and company size on profitability in Islamic commercial banks in Indonesia. that the size of a large company can be seen from its total assets. the larger the company's assets, the easier or freer the company's management will be in managing and using these assets in carrying out the company's operational activities. the flexibility and ease of management in controlling assets will be able to increase Profitability
Keywords : capital structure, liquidity and profitability company size
The Influence of Income, Knowledge, and Time Period on Customer Decisions to Take Financing at PT. BPRS ADECO Langsa
Authors: Syahvindra Meutia , Puspita Sari Juli Dwina
Published: January 2025

When taking out murabahah financing at a BPRS, customers will always consider their income. Customer income is very important because it can determine the customer's ability to make installment payments. Apart from income, when taking out financing at a bank, customers can be influenced by other factors such as the customer's knowledge of a product. Apart from that, another factor that can influence a customer's decision to take out financing is the time period. This is because the financing payment period varies depending on the length of time agreed between the customer and the bank. Therefore, researchers are interested in conducting research on income, knowledge and time period on customers' decisions to take financing. The research method is quantitative with an associative approach. The sample using the limeshow formula of 100 people. The results of the research showed that: (1) Variables interested in conducting research on income, knowledge and time period on customer's decision to take financing. (2) The knowledge variable on customer decisions in taking financing at PT BPRS Adeco Langsa is 0.000 < 0.05 and tcount 5.697 > ttable 1.984. (3) The time period variable for the customer's decision to take financing at PT BPRS Adeco Langsa is 0.341 > 0.05 and tcount 0.957 < ttable 1.984. (4) The income, knowledge and term variables can be said to have a simultaneous influence on customer decision variables in taking financing at PT BPRS Adeco Langsa. With test results Fcount 34.058 > Ftable 2.696 and Sig. 0.000 < 0.05. The R2 value is 51.6% and the remaining 48.4% is influenced by other variables outside this research.
Inteligencia, mente y cerebro humano, entre realidades y distorsiones: Enfoque interdisciplinario
Authors: Albor Guzmán Saúl Manuel , Negrete Díaz José Vicente , Ferro Vidal Luis Enrique , Quintero Hernández Yazmín Alejandra , Aguilar Zavala Herlinda , Morúa Ramírez Juan , Calixto Olalde Ma. Gloria , García Miranda Lendy Yustin , Ramírez Emiliano Joel , Juárez Cortes Esther , Rodríguez Moreno Juan Antonio , Galindo Soto Jonathan Alejandro , Núñez Colín Carlos Alberto , Taurisano Paolo , Sánchez Lerma Liliana , Montilla Rodríguez Liliana Marcela , Torres García María Evelina , Morales Medina Julio César , Godínez Terrones José de Jesús , Palos Soto Ignacio , Lastra García Guillermo Iván
Published: January 2025

El tema de la inteligencia y la mente es de una actualidad interesantísima para abordarlo desde diferentes ángulos y perspectivas científicas; en un mundo en que la inteligencia artificial se ha convertido en un tema cotidiano, fomentando ciertas mentalidades tecnocráticas, nos hemos dado a la tarea de hacer un análisis interdisciplinario, con nuevos enfoques y discusiones. El subtítulo lo hemos denominado “Entre realidades y distorsiones”, puesto que la inteligencia humana capta y aprehende el mundo, lo explica, lo hace inteligible, y existen diversas posturas filosóficas que tratan de explicar la naturaleza del pensar humano: ¿es éste producto de lo meramente biológico? El ser humano, como entidad personal que no puede ser reducida a lo inmanente por su misma inmaterialidad (la del pensamiento), nos lleva a reflexionar sobre los alcances mismos de lo meramente biológico. Preguntas de si la inteligencia o el pensamiento humano son derivaciones cerebrales nos llevan a otro límite en nuestras investigaciones: la enfermedad del cerebro que genera la distorsión de la realidad; por eso los estudios sobre la esquizofrenia, una enfermedad biológica tratada desde diversos aspectos a considerar. El pensamiento humano distinto al de los animales nos ha llevado al otro extremo: superar lo humano. ¿Podrá la inteligencia artificial suplantar a aquella? Es lo que hemos tratado de responder en esta obra colectiva de investigación.
Narrativas de uma gestão em processo de construção: habitar com afeto, natureza e protagonismo coletivo
Authors: Socorro Barros Leitão Onária , Keila de Araújo Carneiro Maria , Cartegiano de Araújo Nascimento Francisco
Published: January 2025

O presente estudo tem por objetivo apresentar o relato de uma experiência de gestão intitulada – habitar com afeto, natureza e protagonismo coletivo – cujo lócus é um Centro de Educação Infantil que integra a rede municipal de ensino de Sobral, no Ceará. A experiência teve início no ano de 2021 e segue até os dias atuais. Metodologicamente, caracteriza-se como um estudo de abordagem qualitativa, natureza descritiva do tipo relato de experiência. O aporte teórico sustenta-se em Imbernón (2001), Almeida (2005), Borges e Alcântara (2020), Oliveira (2021) e Tiriba (2021). Os resultados assinalam que a escola deve ser um ambiente que convida, dialoga e acolhe as crianças, os educadores e educadoras, as famílias e toda a comunidade escolar, tendo o afeto como fio condutor das relações. Sugerem ainda que o papel do gestor é fundamental no sentido de questionar as práticas pedagógicas cotidianas, na perspectiva de construir uma proposta de Educação Infantil menos transmissiva, mais participativa, e alicerçada nos princípios de qualidade e equidade.
Exploitation and Mortality of the West African Fiddler Crab (Uca Tangeri) in Mbo River, Niger Delta, Nigeria
Authors: E. A. Ating, , A. I. Hart,
Published: January 2025

Studies on the exploitation and mortality of the crab Uca tangeri in Mbo river of Akwa Ibom State, Nigeria, were conducted for 12 consecutive months. Exploitation was calculated to be -1.62. The negative value could imply that the species is not fished or under-fished. Length-frequency data was analyzed using FISAT software. Using the Shepherd’s method, asymptotic length (L∞) was 3.99cm, while the Von Bertalanffy Growth Function (VBGF) K was 0.10. Meanwhile, the Powell-Wetheral plot estimated asymptotic length (L∞) was 3.58cm and Z/K was 0.72yr-1. The natural mortality(M) of Uca tangeri was 0.71yr-1. However, using length-converted catch curve, total mortality (Z) was estimated to be 0.27yr-1. The instantaneous fishing mortality (F) was calculated to be -0.44yr-1, indicating that it was not a highly fished species.
Like Country, Like Church: Administrative Perspectives
Authors: Aniefiok Titus David
Published: January 2025

Generally, a country’s government, as an umbrella-institution, accommodates state institutions like the judiciary, military, education, and finance and the non-state institutions like the family, church and mosque, among others. Also, the strength or otherwise of a country largely depends on the strength or otherwise of the subordinate institutions and vice versa; hence the popular negative notion of “strong individuals but weak institutions” in developing states like Nigeria. To this end, this paper sought answers to the following questions: Is there a significant relationship between the Nigerian country’s administration and those of its church-institutions? To what extent has the Nigerian country’s administration influenced those of its church-institutions? The data sources for answers to those questions were derived from secondary sources (descriptive method of analysis) as well as Participant Observation Technique (POT). The paper found and concluded that indeed, most organizations/institutions (secular or religious) resemble their host country significantly. The paper therefore recommended among others, that administrators of the Nigerian country should as a matter of utmost importance, take responsibility for the goings-on in religious organizations (church in particular) and urgently move away from their perennial elitist disposition to the populist. This, would not only enhance Jeremy Bentham’s “greatest happiness for the greatest number” in the country but influence religious leaders and their respective organizations to follow suit; not vice versa
A Survey on Perception, Knowledge and Use of Contraceptives among Females in Ikot Abasi, Akwa Ibom State
Authors: J. C. Nwanya, , E. J. Udo,
Published: January 2025

The rate of unwanted pregnancies and maternal morbidity can be significantly reduced by the use of various forms of contraception. This study assesses the perception, knowledge and use of contraceptives among women in Ikot Abasi local government area of Akwa Ibom State. A pre-tested, structured interviewer-administered questionnaire was the tool for data collection and multi-staged sampling technique was used to select 512 females of reproductive age from the five clans of Ikot Abasi. The method of multinomial logistic regression was used to determine the contraceptive methods and determinants of contraceptive use while the Chi-Square test was applied to determine the perception of contraception. The results revealed that about 97% of the women have knowledge about contraceptives and their major source of information about contraceptives were from their friends/relatives which account for about (37%). Women in the age category 33 – 38, M.Sc/Ph.D level of education and income earners of more than ₦100,000 per month have a high relative risk ratio of contraceptive use of 3.90, 2.48 and 3.32 respectively. Finally, Age group, level of education, level of income per month and relationship status were discovered to be the main determinants of contraceptives use among women in Ikot Abasi.
Promotional Strategies and Market Acceptability of Champ Malt Beverages in Owerri Municipality
Authors: N. O. Dike, , U. Okafor, , S. I. Nwodo,
Published: January 2025

Market acceptability refers to the degree of consumers’ willingness to adopt, purchase, use, and continue using a product or service in a given market over time. The study adopted a survey method to determine the influence of promotional strategies on market acceptability of champ malt beverages in Owerri municipality. The young adults and middle-aged persons between 18 and 50 years constituted the study population of 301,000, according to the National Bureau of Statistics (NBS). The convenience sampling technique was deployed and a sample size of 400 was determined using the Taro Yamane formula. The research instrument (questionnaire), designed in a four-point Likert Scale format was used to elicit responses from the respondents in Owerri municipality. Two hypotheses and two research questions guided the study. The primary and secondary data sources were accessed. The questionnaire was subjected to face-to-face validity by presenting it to the marketing experts to ensure its alignment with the study objectives. In-depth interviews, including focus group discussions were conducted and the reliability coefficient of the instrument, 0.92 was determined using Cronbach’s Alpha technique. With the Pearson Correlation and multiple linear regression analytical techniques, hypotheses one and two were tested respectively at 0.05 level of significance. The findings of the study revealed that promotional strategies had strong positive relationships with market acceptability of champ malt beverages in Owerri municipality, and exerted significant positive influence on consumer purchase decisions. The study provided insights into the impressive sales turnover of champ malt in the rural areas instead of Owerri municipality.
Factors Affecting Growth and Success of Green and Sustainable Entrepreneurship: An Empirical Study of Indian Startups
Authors: B C Anant
Published: January 2025

Green entrepreneurship is about building businesses that balance environmental care with profit-making. In India, many start-ups are leading projects in areas like clean energy, waste management, and sustainable agriculture. These businesses are growing in response to rising environmental awareness and changing consumer preferences. Green entrepreneurs thus play an important role in reducing pollution, creating jobs, and promoting sustainable lifestyles. Their work encourages eco-friendly habits and reshapes supply chains to minimize environmental harm. As they drive both social and economic value, green start-ups contribute to building a more sustainable future for India. This study examines the factors that influence the growth and success of green entrepreneurship in India. The study will look at what is needed by these initiatives to thrive and succeed. This will help policymakers and other organizations to take the necessary steps. A sample of 223 people involved in Indian sturt-ups were surveyed to explore the factors that affects the growth and success of green and sustainable entrepreneurship and found that Consumer Demand, Competitive advantage, Collaboration and Networks and Corporate and Social Responsibility (CSR) are the factors that affects the growth and success of green and sustainable entrepreneurship
Reforming Bangladesh: Ecological and Societal Change in Democratization
Authors: Shafia Inas Ainun
Published: January 2025

The current political transition in Bangladesh since the end of Sheikh Hasina’s 15-year rule has led to reformation, marking a new turning point in the political landscape. This short commentary analyzes the journey to democracy in Bangladesh from its independence in 1971 to the transition from the Hasina regime. This commentary delves into the potential political and ecological aspects of the democratization process, starting from describing the relevance of the current political and ecological crisis. It then recommends the next step forward, which involves ensuring a democratizing environment, building resilience in political institutions, and implementing more substantive democracy.
Looking for Innovation Opportunity Areas in the Value Chain in the Agri-food Sector
Authors: Vega-Salinas Roberto Isaias , Vega-Gonzalez Luis Roberto , Garcia-Lira Alan
Published: January 2025

Agricultural producers know their business very well, through daily practice they know the best way to carry out their processes; however, currently, it is necessary to continually seek improvements in its production processes to remain competitive and not only survive but grow. Thus, today we speak of open innovation, which implies the establishment of networks, made up of diverse local, regional, national and international nodes and components through which small or medium-sized producers can learn about experiences from other latitudes, which help them develop innovation projects to stay competitive. Through the review and analysis of cases of some Mexican agricultural producers and other Latin American countries based on the experience and proposals of some international organizations, which use the network innovation model, in this work a simple and synthetic proposal is developed for the opportunity areas to carry out innovation projects in the different links of the value chain of agri-food production processes.
Optimalisasi Unjuk Kerja Sea Water Booster Pump Pada PT PLN Nusantara Power UP Muara Tawar Blok 5
Authors: Novianto Hernawan , Syafputra Wino
Published: January 2025

PT. PLN Nusantara Power UP Muara Tawar merupakan Perusahaan yang bergerak di bidang pembangkit listrik tenaga uap dan gas yang mampu menghasilkan daya sebesar 3050 MW. Dalam prosesnya membutuhkan air laut untuk membantu segala proses, diantaranya proses pada chlorine plant. Dan salah satu pompanya yaitu Sea Water Booster Pump berfungsi untuk memasok air laut yang akan digunakan sebagai bahan baku elektrolisis untuk menghasilkan chlorine. Saat ini Sea Water Booster Pump mengalami penurunan kapasitas yang seharusnya berada di 120 m3/h menjadi 100 m3/h. Untuk mengembalikan kinerja Sea Water Booster Pump maka perlu dilakukan inspeksi, evaluasi, dan optimalisasi. Berdasarkan hukum afinitas yang terjadi pada kondisi pompa saat ini, dilakukan optimalisasi dengan meningkatkan putaran motor dari awalnya berada pada 1150 rpm menjadi 1462 rpm. Dengan perubahan ini, kapasitas pompa mengalami kenaikan menjadi 127,13 m3/h, dan berdasarkan hasil evaluasi efisiensi pompa juga mengalami kenaikan menjadi 42,5%.
Evaluating Well Service Rig Utilization for Competency-Based Training in the Oil and Gas Energy Sector
Authors: Umam Mukhamad Faeshol , Alam M Samsul Hadi , Alexandri Agus , Shiddiq Asep Mohamad Ishaq
Published: January 2025

Indonesia's significant oil and natural gas reserves necessitate the development of a highly skilled workforce to support and advance well-service operations. Ensuring that personnel pos-sess the required blend of theoretical knowledge and practical experience is essential, and this can be achieved most effectively through hands-on training. The Center for Human Resources Development of Oil and Gas (PPSDM Migas) employs Rig #99 as a mobile training facility to ad-dress this need. This study aims to investigate the potential of Rig #99 utilization as a well-service training school that can produce competent human resources for the oil and gas sector. First, it identifies the training needs for oil and gas well service competencies in Indonesia. Sec-ond, it determines the competencies required based on the Indonesian National Work Compe-tency Standards (SKKNI) for well service. Third, it assesses the readiness and suitability of Rig #99 as a well-service training facility at PPSDM Migas. This study provides comprehensive in-sights into the effectiveness of using Rig #99 as a training tool by evaluating training data, cur-riculum, participant demographics, duration, and post-training outcomes. The findings indicate that Rig #99 plays a critical role in developing the competencies necessary for well service, aligning with the SKKNI standards, and fulfilling the demand for qualified personnel in Indone-sia's oil and gas industry. Feedback from participants demonstrates high satisfaction levels, rein-forcing Rig #99's role as an effective platform for cultivating skilled well-service operators and establishing a solid foundation for well-service training schools.
Perlakuan Variasi Sudut Air Datang pada Sudu 8/16/32 Terhadap Peningkatan Efisiensi Turbin
Authors: Kurnawan Muhammad Alif , Ningrat Shinta , Aji Ferro
Published: January 2025

Turbin air adalah alat yang menghasilkan energi listrik dari sumber energi terbarukan yang dapat dihasilkan melalui aliran air. Adapun faktor penting dalam meningkatkan efisiensi turbin air yaitu kemiringan dan bentuk sudu turbin. Sudu merupakan elemen penting dalam turbin air yang fungsi untuk mengubah energi kinetik air menjadi energi mekanis yang dapat digunakan untuk menggerakkan generator listrik. Pada panelitian ini variasi yang diambil yaitu sudu 8/16/32 dan variasi sudut air datang yaitu kemiringan 45°,60°,75°. Sudut air datang termasuk salah satu faktor yang mempengaruhi kinerja turbin karena dapat mempengaruhi efisiensi dan daya yang dihasilkan. Pada percobaan yang telah kami lakukan hasil pratikum dan analisis data, pada sudu 8 kemiringan yang paling efisien terdapat pada kemiringan 75° yang mampu menghasilkan daya sebesar 2,19 W pada frekuensi 57 Hz dengan efisiensi sebesar 39,5%, pada sudu 8 kemiringan yang paling efisien terdapat pada kemiringan 75° yang mampu menghasilkan daya sebesar 3,40 W pada frekuensi 57 Hz dengan efisiensi sebesar 61,3%, pada sudu 32 kemiringan yang paling efisien terdapat pada kemiringan 75° yang mampu menghasilkan daya sebesar 3, 48 W pada frekuensi 54 Hz dengan efisiensi sebesar 62,7 %.
ANALISA LAJU KOROSI DAN SISA UMUR TANGKI TIMBUN SOLAR T-106 DI PPSDM MIGAS CEPU
Authors: Ronal April Yanto  , Aji Ferro
Published: January 2025

Tangki timbun solar merupakan komponen vital dalam infrastruktur penyimpanan bahan bakar di Pusat Pengembangan Sumber Daya Manusia Minyak dan Gas Bumi (PPSDM) Migas Cepu. Penelitian ini bertujuan untuk mengevaluasi laju korosi pada tangki timbun solar T-106. Metode yang digunakan meliputi survei lapangan, pengambilan sampel korosi, dan analisis laboratorium guna mengidentifikasi faktor lingkungan seperti kelembaban dan suhu yang memengaruhi korosi. Hasilnya menunjukkan laju korosi sebesar 0,13 mm/tahun pada shell pertama dan 0,08 mm/tahun pada shell kedua, dengan sisa umur masing-masing 41 tahun dan 51 tahun. Pemantauan rutin terhadap ketebalan pelat dan laju korosi disarankan untuk menjaga integritas tangki.
PROTOTIPE LAMPU LESTARI MENGGUNAKAN TEKNOLOGI BOTOL SURYA DAN LED RAMAH LINGKUNGAN
Authors: Arzufa Ilham Ragil , Akhiriyanto Novan , Gusti Kharin Ananda
Published: January 2025

Energi listrik sangat penting bagi kehidupan, namun tidak semua penduduk Indonesia mendapat akses penuh, terutama di daerah padat penduduk yang mengalami masalah penerangan. Gagasan Lampu LESTARI (Lampu Botol Surya dan Teknologi LED) muncul sebagai solusi penerangan ramah lingkungan. Lampu ini memanfaatkan botol PET daur ulang yang diisi air dan pemutih, terhubung dengan panel surya untuk menghidupkan LED. Konsep ini mendorong masyarakat memanfaatkan limbah botol untuk membuat lampu surya ekonomis dan aman yang bergantung pada sinar matahari. Penelitian ini juga memanfaatkan panel surya untuk mengkonversi energi matahari menjadi energi listrik untuk melakukan pencahayaan pada malam hari menggunakan lampu LED dengan sistem switch remote. Penelitian ini merancang eksperimen menggunakan sensor BH1750fvi untuk mengukur intensitas cahaya dan sensor INA219 untuk memonitor tegangan serta arus, semuanya dihubungkan ke ESP32 dan Google Sheet untuk pemantauan data secara realtime. Hasilnya menunjukkan intensitas cahaya rata-rata 708.88 lux di siang hari dan 147.09 lux di malam hari, dengan daya rata-rata 1.26 Watt.
RANCANG BANGUN PENGUKURAN ARUS, TEGANGAN, DAYA PADA SISTEM SOLAR PANEL MENGGUNAKAN JARINGAN NIRKABEL
Authors: Pujianto Pujianto , Adi Wasis Waskito , Akhiriyanto Novan
Published: January 2025

Penggunaan energi terbarukan seperti solar panel semakin berkembang pesat sebagai solusi untuk mengurangi ketergantungan pada sumber energi fosil. Namun, untuk meningkatkan efisiensi dan pemantauan sistem solar panel, diperlukan pengukuran arus, tegangan, dan daya yang akurat. Penelitian ini merancang dan membangun sistem pengukuran arus, tegangan, dan daya pada solar panel dengan menggunakan jaringan nirkabel. Sistem ini terdiri dari sensor arus dan tegangan, mikrokontroler, dan modul komunikasi nirkabel. Data yang diperoleh dari sensor dikirimkan ke server pusat untuk pemantauan dan analisis lebih lanjut. Hasil pengujian menunjukkan bahwa sistem ini mampu mengukur arus, tegangan, dan daya dengan tingkat akurasi yang tinggi yaitu Hasil mengukur arus dengan akurasi hingga 98%, tegangan hingga 99%, dan daya hingga 97%. serta dapat diakses secara real-time melalui perangkat berbasis internet.
ANALISIS PENGARUH OPEN IMPELLER SUDU 8 PADA POMPA SENTRIFUGAL MENGGUNAKAN SIMULASI CFD
Authors: Ayatullah Mochammad Khafidz , Sujono Sujono
Published: January 2025

Pompa merupakan suatu alat untuk memindahkan fluida atau meningkatkan tekanan fluida dalam mendistribusikan suatu fluida. Pompa sentrifugal adalah pompa yang paling umum digunakan di berbagai industri. Computational Fluid Dynamic (CFD) adalah sebuah software yang paling umum digunakan untuk simulasi dan analisis yang berhubungan dengan solusi di bidang aliran fluida melalui analisis numerik. CFD dirancang dalam analisis berbagai desain untuk memprediksi bagaimana fluida akan berperilaku dalam berbagai kondisi. Untuk mengetahui unjuk kerja sebuah impeller pada pompa sentrifugal maka di perlukan simulasi analisi pada CFD untuk mengetahui alairan yang dihasilkan dan unjuk kerja yang dihasilkan apakah sudah efisien atau belum. Sehingga pompa siap dirancang dan dioperasikan dalam pengaplikasian secara langsung dengan sangat efisien tanpa menimbulkan banyak kekurangan. Dalam hasil simulasi open impeller sudu 8 didapatkan hasil aliran yang bagus dengan kecepatan fluida masuk 0,5057 m/s, kecepatan fluida keluar 1,0137 m/s, tekanan masuk 101325,135 Pa, dan tekanan keluar 101837,862 Pa. Dari data tesebut maka dapat ditemukan unjuk kerja teoritis pompa dengan head teoritis 148,403 m, kapasitas teoritis 0,01138 m3/s, daya cairan 16500,22 W, dan daya poros 26613,26 W. Dalam hasil perhitungan yang diperoleh dari hasil simulasi, maka open impeller sudu 8 sangat optimal dan efisien untuk digunakan dalam kebutuhan yang diperlukan.
EVALUASI UNJUK KERJA FIRE TUBE BOILER TWA 6000KG/H DI PT X
Authors: Darawia Antoni Apta Nugraha , Ayende
Published: January 2025

PT. X memiliki kilang yang merupakan tempat untuk mengolah minyak mentah menjadi minyak yang dapat digunakan oleh berbagai mesin sesuai dengan jenis bahan bakarnya. Untuk menjaga system produksi dan kualitas nilai kalor bahan bakar di PT. X, dibutuhkan unit Boiler untuk menambahkan dan menjaga nilai kalor bahan bakar yang di produksi. Boiler merupakan bejana tekan yang digunakan untuk menghasilkan uap. Boiler di PT. X menggunakan Feed Water sebagai fluida yang dikonversi menjadi uap. Untuk menjaga agar Boiler bisa memberikan nilai kalor yang sesuai, dibutuhkan perawatan dan dilakukan evaluasi unjuk kerja pada boiler. Boiler beroperasi pada saat minyak mengalami penurunan temperatur di proses pemisahan fraksi fluida, dan pada saat membersihkan perpipaan dari fluida yang tertinggal. Dengan adanya unit Boiler dapat membuat kilang menjadi terawat dan efisien dalam proses produksi minyak jadi. Evaluasi unjuk kerja dari boiler terdiri atas dua metode, yaitu efisiensi secara langsung dan tidak langsung. Efisiensi dengan metode langsung unjuk kerja boiler menunjukan angka 81.83% dan Efisiensi dengan metode tidak langsung unjuk kerja boiler menunjukan angka 81.18%. dengan hasil efisiensi yang telah dilaksanakan, diketahui bahwa kinerja dari boiler masih diatas batas kelayakan peralatan dan masih bisa bekerja dengan baik serta mengetahui perbedaan efisiensi antara kedua metode tersebut.
OPERASI PROGRAM STIMULASI HYDRAULIC FRACTURING PADA SUMUR XYZ-01 PADA LAPANGAN PEM
Authors: Bunga Chentika Anugra Cenia , Miftahul Alim Muslim  , Febrianda A S  , Gilang Bagaskara Harlis  , Purnomosidi
Published: January 2025

Sumur XYZ-01 berada di lapangan PEM yang letaknya ada di daerah Kabupaten Indramayu, Jawa Barat. Sumur ini adalah sumur minyak yang diproduksikan di Lapisan XYZ-01 dengan Formasi Res-ervoir Sandstone. Lapisan S yang diproduksikan pada sumur XYZ-01 ini memiliki permeabilitas yang tergolong rendah, yaitu 5 mD. Selain itu nilai skin yang tinggi. Dengan keadaan tersebut, stimulasi sumur seharusnya dilakukan untuk meningkatkan laju produksi dari sumur XYZ-01. Salah satu jenis stimulasi yang mungkin bisa dilakukan ialah hydraulic fracturing, karena dianggap bisa meningkatkan permeabilitas dari lapisan S sehingga nantinya akan meningkatkan produksi dari sumur XYZ-01. Penelitian ini akan disusun dengan menggunakan metode yang biasa digunakan untuk mengevaluasi efek dari stimulasi hydraulic fracturing pada Sumur XYZ-01 di Lapangan PEM. Pendekatan ini melibatkan pengumpulan data reservoir, komplesi, dan produksi, diikuti dengan analisis menggunakan perangkat lunak FracCade 5.1. Dengan hasil setelah dilakukan simulasi geometri rekahan menggunakan metode PKN 2D pada software FracCade 5.1, didapatkan lebar rekahan aktual mencapai 0.126 in, dengan panjang rekahan sebesar 274,9 ft dan tinggi rekahan sebesar 138,0 ft. Nilai permeabilitas yang rendah sebesar 5mD dapat meningkat menjadi 30 mD. Kerusakan pada sumur berupa nilai skin yang tinggi sebesar +8.6 berhasil diatasi, dengan menurunnya nilai skin menjadi -5,3. Evaluasi terhadap hasil hydraulic fracturing terhadap sumur XYZ-01 menunjukkan kesuksesan dengan peningkatan nilai permeabilitas, penurunan nilai skin, dan peningkatan produksi sumur.
PENGGUNAAN METODE ANALYTICAL HIERARCHY PROCESS DALAM PERANCANGAN PRODUK CAIRAN PEMBERSIH LANTAI BERBASIS ECO ENZYM
Authors: Fadila Karisma , Setiyono Agus
Published: January 2025

Berdasarkan data Badan Pusat Statistik (BPS), tahun 2021 terdapat 10.683 desa/kelurahan paling banyak di Jawa Tengah yang mengalami pencemaran air disebabkan oleh limbah air sabun. Sabun adalah alat pembersih yang dibuat dari bahan kimia yang tergolong tidak mudah terurai oleh air. Hal tersebut melatarbelakangi peneliti untuk membuat sabun pembersih lantai yang ramah lingkungan dengan memanfaatkan sampah organik sebagai pembuatan eco-enzyme. Berdasarkan data yang diperoleh dari (Sistem Informasi Pengelolaan Sampah Nasional) SIPSN KLHK, jumlah timbulan sampah di Indonesia pada tahun 2023 mencapai 28,6 juta ton dan 41,48% sampah organik termasuk sampah sisa makanan. Solusi yang bisa ditawarkan ialah memanfaatkan timbunan sampah organik menjadi eco-enzyme sebagai antibakteri minim bahan kimia dalam pembuatan pembersih lantai. Metode Analytical Hierarchy Process dipilih untuk mengetahui hasil proporsi fitur utama sebesar 50%, fitur sekunder 20%, bahan utama 20%, dan sosial & lingkungan 10%. Fitur utama pembuatan pembersih lantai diantaranya dapat membersihkan lantai marmer, porselen serta keramik, cepat kering, tidak licin, dan tidak lengket yang disebut champion concept. Fitur tambahan seperti efisiensi tinggi dalam membasmi bakteri, dan ramah lingkungan. Pembuatan pembersih lantai menggunakan bahan dasar utama yaitu Methyl Ester Sulfonate (MES), Aquades, NaCl, dan eco-enzyme. Pembuatan pembersih lantai terbagi menjadi 3 tahapan yaitu tahap proses mixing bahan baku, tahap fermentasi, dan tahap upgrading.
EVALUASI HOLE CLEANING PENGANGKATAN CUTTING DI ZONA PROBLEMATIK SUMUR PANASBUMI - STUDI KASUS
Authors: Suranta Bambang Yudho , Yanuarta Rio , Sabarlele Maickhel Ayeu , Rahutama Arif , Chabibah Sasya Nurul Alfie , Muhadir Muhammad Furqan Adhim
Published: January 2025

Kegiatan pemboran panas bumi memerlukan perhatian khusus, terutama dalam proses pengangkatan serbuk bor atau cutting ke permukaan. Apabila serbuk bor ini tidak terangkat dengan sempurna, maka proses pembersihan lubang bor (hole cleaning) pada sumur tidak akan berjalan dengan baik, dan hal ini dapat menimbulkan berbagai masalah yang signifikan. Beberapa di antaranya termasuk risiko terjadinya washout, bit balling, hingga terjadinya stuck pipe yang bisa menghambat operasi. Untuk mencegah timbulnya masalah-masalah tersebut, sangat penting untuk melakukan analisis yang mendalam terhadap proses pengangkatan serbuk bor guna memastikan kelancaran proses pemboran dan menghindari kerugian lebih lanjut. Tujuan dari penelitian ini adalah untuk memastikan metode yang paling efektif untuk mengangkut puing pengeboran di zona bermasalah. Untuk tujuan ini, tiga metode dianalisis dan dievaluasi berdasarkan cutting transport ratio artinya cutting pemboran yang dapat terangkat ke permukaan harus lebih dari 90% memenuhi syarat parameter, particle bed index merupakan nilai index pengendapan pada cutting yang mana memenuhi syarat parameter yaitu lebih dari 1 dan cutting concentration membahas tentang kapasitas cutting yang terdapat di annulus harus kurang dari 5%. Analisa dan perhitungan dengan menggunakan ke tiga metode dikatakan baik maka indikator parameter nya pengangkatan serbuk bor kepermukaan adalah baik.
PENENTUAN UKURAN DIAMETER ORIFICE PADA PIPA 8 INCH LAPANGAN PANAS BUMI XSA
Authors: Putri Elsabrina Prakasa , Subekti Henk , Ariadji Bakhtiar Zaid , Andrianingtyas Yusniar Ully
Published: January 2025

Pengukuran aliran uap sangat penting untuk manajemen pengembangan dan pemantauan output sumur. Pengukuran ini umumnya menggunakan plate orifice yang memanfaatkan perbedaan tekanan saat uap melewati orifice. Penelitian ini bertujuan untuk menentukan ukuran diameter orifice yang optimal pada pipa sumur drysteam berukuran 8 inch dan berdasarkan standar ISO-5167. Hasil penelitian menunjukkan bahwa diameter orifice yang sesuai adalah 5.9 inch dengan laju alir massa sebesar 43.32 ton/jam. Selanjutnya, nilai pressure loss yang terukur adalah 0.42 bar yang mana menunjukkan kehilangan tekanan yang signifikan. Data tapping upstream dan downstream juga diperoleh sehingga memberikan gambaran lengkap tentang perbedaan tekanan sebelum dan sesudah orifice. Keseluruhan hasil penelitian ini memberikan kontribusi penting dalam memahami karakteristik aliran melalui orifice dan implikasinya terhadap desain sistem perpipaan.
OPTIMASI KEY COMPONENT PADA OUTLET STREAM KOLOM DEPROPANIZER (015C-102) UNIT LPG RECOVERY FOC II DI PT XYZ
Authors: Pangestu Bagas Dwi , Yulianto Achmad Rendy Dwi , Sriana Tun
Published: January 2025

LPG Recovery Unit-015 di Fuel Oil Complex II PT XYZ merupakan unit pengolahan penting untuk memenuhi kebutuhan LPG domestik dan ekspor. Salah satu unit kunci adalah kolom depropanizer 015C-102 yang memisahkan propana dan butana dengan tingkat kemurnian tinggi. Simulasi data lapangan pada Aspen Hysys menunjukkan kolom berada di area operasi yang tidak optimal, menyebabkan masalah weeping. Oleh karena itu, dilakukan optimasi performa kolom melalui modifikasi variabel operasi seperti temperatur umpan dan rasio refluks. Setelah optimasi pada temperatur umpan 50℃ dan rasio refluks 2,0, recovery propana meningkat dari 51,75% menjadi 53,76%, atau naik 2,01%. Fraksi mol propana pada aliran bottom product turun dari 0,04784 menjadi 0,01555, memenuhi spesifikasi maksimum 0,018. Fraksi mol i-butana pada aliran top product juga menurun dari 0,11310 menjadi 0,06704, sesuai spesifikasi maksimum 0,08. Untuk mencapai kondisi ini, energi panas reboiler perlu ditingkatkan sebesar 664.102,46 kJ/jam, meningkatkan temperatur bottom product. Peningkatan ini berperan penting dalam menjaga performa pemisahan komponen pada kolom, yang berkontribusi terhadap kualitas produk LPG yang dihasilkan. Hasil optimasi memastikan pemenuhan spesifikasi produk serta kinerja kolom yang lebih efisien.
EFEKTIFITAS PENAMBAHAN DISPERSANT DAN RETARDER TERHADAP SLURRY PROPERTIES
Authors: Rymoza Verona Cycilia , Suranta Bambang Yudho , Heriyana Arie
Published: January 2025

Proses penyemenan pada sumur pemboran bertujuan untuk melindungi casing dari masalah masalah mekanis saat proses pemboran berlangsung. Selain itu penyemenan dilakukan untuk menutup kebocoran yang terjadi pada casing, sehingga produksi sumur tetap terjaga. Penggunaan aditif berpenan penting dalam proses penyemenan, karena kualitas bubur semen ditinjau dari komposisi aditif yang digunakan untuk suatu sumur. Penelitian ini dilakukan untuk membuktikan keefektifan penggunaan aditif Dispersant dan Retarder terhadap Viskositas dan Thickening Time. Selanjutnya dilakukan penelitian dengan skala laboratorium untuk membuktikan nilai viskositas dan thickening time, sumur dengan suhu 167℉ menggunakan Dispersant 0.27 gps (konversi skala lapangan) dengan Retarder 0.085 gps. Untuk sumur dengan suhu 149℉ menggunakan Dispersant dan Retarder sebanyak 0.24 gps dan 0.030 gps. Didapatkan hasil Yield Point masing masing pada room temperature sebesar 10 lb/100ft2 dan 16 lb/100ft2. Sedangkan pada suhu yang lebih tinggi (BHCT) memiliki nilai Yield Point yang sama yaitu 15 lb/100ft2. Untuk nilai thickening time lebih lama adalah pada suhu 167℉ yaitu 4 jam 2 menit dan 30 detik, artinya dengan konsentrasi Dispersant dan Retarder yang lebih tinggi akan memperpanjang waktu Thickening Time.
ANALISIS PENGARUH DEBIT AIR TERHADAP EFISIENSI TURBIN PELTUN DENGAN 32 SUDU PADA PLTMH
Authors: Furqan Furqan , Aji Ferro
Published: January 2025

Turbin pelton merupakan salah satu turbin berpenggerak air. perangkat ini berperan sebagai alat mengubah energi kinetik air menjadi energi mekanis yang kemudian dapat digunakan untuk menghasilkan listrik. Penelitian ini bertujuan untuk mengevaluasi pengaruh variasi debit air terhadap efisiensi turbin pelton dengan jumlah sudu 32. Percobaan dilakukan melalui pengujian dengan berbagai frekuensi dan bukaan valve untuk mengukur daya Listrik yang dihasilkan dan efisiensi turbin dalam berbagai variable debit. Hasil pengujian menunjukkan bahwa efisiensi tertinggi pada turbin diperoleh pada frekuensi 63 Hz dengan daya sebesar 1,72 Watt dan efisiensi 29,33%. Pada percobaan kedua dengan bukaan valve 100, daya sebesar 7,06 Watt diperoleh dengan efisiensi 40,09%. Dari kedua percobaan ini turbin pelton dengan penggerak pompa konstant dan bukaan valve 100% memiliki efisiensi tertinggi dibanding metode lainnya.
新冠疫情期間大學教師參與MBCT線上課程成效研究
Authors: 姜義勝 姜義勝
Published: January 2025

大學教師做為學生遭遇人生困境時協助者的角色，也面臨限期升等、教師評鑑和行政服務等壓力，導致焦慮和憂鬱等情緒困擾。2021年新冠（COVID-19）疫情期間，作者為某國立大學通識教育課程相關教師，以線上視訊方式，開設八週的「正念認知療法」（MBCT）課程。本研究想瞭解教師修習課程後，對於專注力提升、壓力減輕以及情緒管理等，是否有所助益。研究方法係透過課程後學習心得回饋問卷（包括質性和五點量表-從「完全沒有」，到「有很大的幫助」），作成統計分析；另在專注力提升部份，利用中文版「止觀覺察注意量表」（the Chinese Version Mindful Attention Awareness Scale，簡稱CMAAS）於課程前、後做測量，並和學習心得回饋問卷結果相互驗證。本研究結果顯示，八週的MBCT課程，對於教師專注力提升、壓力減輕和情緒管理有良好的成效。本研究爰建議大學教師，可以修習正念認知療法相關課程，適時幫助自己和學生。此外，建議大學通識教育單位可以研發如「磨課師」（MOOCs）線上正念自主學習課程，俾利益更多師生。

 

University faculty members, as helpers when students facing life difficulties, also experience pressures related to promotion deadlines, teaching evaluations, and administrative tasks, which may lead to emotional distress such as anxiety and depression. During the COVID-19 pandemic in 2021, the author offered an eight-week Mindfulness-Based Cognitive Therapy (MBCT) course online for general education teachers at a national university. The purpose of this study is to assess whether participation in MBCT course could provide faculty with benefits such as concentration improvement, stress reduction, and emotion management. The research method utilized qualitative questionnaire and a five-point scale called Chinese Version Mindful Attention Awareness Scale (CMAAS) before and after the MBCT course. The results show that the eight-week MBCT course had significant positive effects on enhancing faculty members’ concentration improvement, stress reduction, and improved emotional management. Based on these results, it is recommended that university faculty members may participate in mindfulness-based cognitive therapy courses to support themselves and their students. Furthermore, it is suggested that general education departments develop online mindfulness self-learning courses, such as MOOCs, to benefit a larger number of faculty members and students.

 
Magical Realism: The “Problem of Definition”
Authors: Nightingale Elizabeth
Published: January 2025

Whilst the theoretical study of magical realist literature is broad and wide-ranging, there is a remarkable lack of consensus among critics on how the mode should be defined, how its techniques should be described, and how it corresponds with both the contexts of its production and its contemporary neighboring genres. This essay maps some of the dominant avenues that have been explored in the field, illuminating where the disagreements lie and highlighting the sheer profusion of critical approaches that have been competing for attention since magical realism first began to receive academic attention with the publication of Gabriel García Márquez’s One Hundred Years of Solitude in 1967, which have inevitably contributed to the confusion about how works of magical realism should be identified and interpreted. Ultimately, it is my contention that the study of magical realism is limited by the critical convention that considers the mode to have begun in Latin America in the 1950s, and often treats García Márquez as its originator: texts emerging from outside of this context are excluded from critical discussion, even where they comply with all formal definitions of the mode. My essay interrogates this convention, which I view as producing an untenable internal contradiction that I identify as a key contributing factor in the so-called “problem of definition” with which the field has long been plagued, and proposes that historical or geographical particulars cannot feature in a working definition of magical realism.
Enacting the Impossible: Techniques and Limitations of Staging Magical Realism
Authors: Bowers Maggie Ann
Published: January 2025

This paper explores the complexities of bringing the imaginative extremes of magical realism to the physical realm of the stage. Magical realism famously challenges the reader by demanding not just a suspension of belief but also a suspension of disbelief—it demands that we suspend our beliefs in the physical reality of our existence and move into a realm where we are required to accept the excesses of the imagination beyond what is usually considered to be fiction’s limits. Moreover, it requires the willingness on the part of the reader to take up the challenge of accepting what would be impossible in the physical world while demanding that these elements are understood in relation to a reality that appears convincing and possibly even familiar. In recent years in English-speaking theatre, productions such as Angels in America, Marisol, Midnight’s Children, Jerusalem, and Life of Pi, innovate theatrical convention with light and digital projections, sound, symbolic set-design, and puppetry while maintaining a necessary foot in realism through the placement of familiar objects, locations, costumes, and language register. This paper will consider the effectiveness of these techniques and the comparative success of adaptations of novels for the stage, in contrast to magical realist plays written for the stage. The resulting exploration considers the potential for further development of the genre of magical realism in recent forms of magical realism of World Theatre in Asia and Latin America.