bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pengembangan Media Video Pembelajaran Kosakata Bahasa Jepang dengan Voice Over pada Kandidat Pemagang Bidang Souzai Seizougyou di LPK Hishou Universal Style Bangli
Authors: Dea Sri Larasati Ni Made , Suartini Ni Nengah , Antartika I Kadek 
Published: September 2024

Penelitian ini merupakan penelitian dan pengembangan atau Research and Development (R&D). Penelitian ini bertujuan untuk mengembangkan media video pembelajaran bahasa Jepang, khususnya kosakata yang berkaitan dengan souzai seizougyou dan untuk menguji kelayakan video pembelajaran tersebut bagi kandidat pemagang bidang souzai seizougyou di LPK Hishou Universal Style Bangli, Bali. Media ini menghasilkan 10 video pembelajaran. Pada setiap video terdiri atas pengenalan kosakata, latihan pengucapan, dan latihan soal dengan menggunakan voice over penutur asli. Model pengembangan yang digunakan adalah model Four-D (4D) oleh S. Thiagarajan, Dorothy S. Semmel, dan Melvyn L Semmel (1974) yang terdiri atas empat tahapan yakni Define, Design, Develop, dan Disseminate. Jenis data yang digunakan dalam penelitian pengembangan ini adalah data kualitatif dan kuantitatif. Pengumpulan data dilakukan dengan menggunakan metode wawancara dan angket uji ahli (uji ahli materi, uji ahli media) dan uji coba produk secara terbatas agar dapat menghasilkan produk yang optimal. Berdasarkan hasil angket, skor yang diperoleh dari ahli materi yakni 87,5 (sangat sesuai), dari ahli media 95,31 (sangat sesuai). Kemudian, skor yang diperoleh dari uji coba dengan instruktur yakni 100 (sangat sesuai) dan uji coba dengan kandidat pemagang yakni 98% (sangat layak). Dengan demikian, video pembelajaran yang dikembangkan ini dapat dijadikan sebagai media penunjang aktivitas pembelajaran kosakata bahasa Jepang.
Perbanyakan dan Pembentukan Umbi Mikro Kentang (Solanum tuberosum L.) secara In Vitro pada Modifikasi Komposisi Media MS dan Sukrosa
Authors: Setyorini Titin 
Published: September 2024

Permintaan kentang terus meningkat sejalan dengan bertambahnya jumlah penduduk setiap tahun. Produksi kentang tidak dapat konsisten memenuhi permintaan tersebut karena masalah penggunaan bibit kentang. Umbi mikro kentang merupakan strategi untuk memperoleh bahan tanam yang berkualitas yang terhindar dari penyakit. Kultur jaringan merupakan teknik untuk menghasilkan umbi mikro. Media merupakan faktor penting penentu keberhasilan kultur jaringan. Tujuan penelitian ini adalah untuk mengetahui pengaruh modifikasi media MS dan sukrosa terhadap pertumbuhan tunas dan pembentukan umbi mikro kentang. Penelitian dilakukan di Laboratorium Kultur Jaringan Institut Pertanian STIPER Yogyakarta pada bulan Maret – Juli 2022. Penelitian ini menggunakan rancangan acak lengkap (RAL) dua faktor. Faktor pertama adalah modifikasi media MS yang terdiri atas tiga aras yaitu MS 1 (NH4NO3 20 ml + KH2PO4 10 ml), MS 2 (NH4NO310 ml + KH2PO4 20 ml), dan MS 3 (NH4NO3 5 ml + KH2PO4 40 ml). Faktor kedua adalah konsentrasi sukrosa yang terdiri dari tiga aras yaitu S1 (30 g), S2 (40 g) dan S3 (50 g) serta pemberian hormon BAP sebanyak 3,4 ppm/L. Hasil penelitian berupa data kuantitatif disajikan dalam bentuk excel, sedangkan data kualitatif disajikan secara deskriptif dan dilengkapi dengan gambar. Hasil penelitian menunjukkan bahwa perlakuan MS 1 (NH4NO3 20 ml + KH2PO4 10 ml) dan pemberian sukrosa 40 g berpengaruh terbaik pada parameter jumlah akar, jumlah ruas dan jumlah umbi mikro kentang. Perlakuan modifikasi komposisi media MS memberikan pengaruh terbaik terhadap pertumbuhan tunas (jumlah akar, tinggi tanaman dan jumlah ruas) dan pengaruh pada berat umbi mikro. Perlakuan modifikasi sukrosa 40 g memberikan pengaruh terbaik pada parameter jumlah tunas, jumlah akar, jumlah ruas dan jumlah umbi mikro yang terbentuk. Kata kunci : umbi mikro kentang, kultur jaringan, modifikasi media MS, sukrosa, BAP
Efektivitas Dosis Pupuk Kalium dan Trichokompos Kotoran Ayam terhadap Produksi Bawang Merah Asal True Shallot Seed
Authors: Widia Sari Linda , Anwar Syaiful , Fuskhah Eny 
Published: September 2024

ABSTRAK Teknologi pemupukan kalium dan trichokompos dapat memaksimalkan produksi bawang merah asal biji. Penelitian dilaksanakan pada tanggal 15 Februari 2022 – 12 Agustus 2022 di Greenhouse, laboratorium Fisiologi dan Pemuliaan Tanaman, Fakultas Peternakan dan Pertanian, Universitas Diponegoro. Penelitian menggunakan Rancangan Acak Lengkap faktorial dengan 2 faktor. Faktor pertama adalah dosis pupuk kalium dengan 4 taraf perlakuan, yaitu : K0 = Kontrol; K1 = 57 kg/ha K2O; K2 = 114 kg/ha K2O; dan K3 = 171 kg/ha K2O. Faktor kedua adalah dosis trichokompos kotoran ayam dengan 4 taraf perlakuan, yaitu : T0 = Kontrol; T1 = 10 ton/ha; T2 = 20 ton/ha; dan T3 = 30 ton/ha. Percobaan terdiri dari 16 kombinasi perlakuan dengan 3 kal ulangan. Hasil penelitian yaitu pupuk kalium berpengaruh pada parameter tinggi tanaman, diameter umbi, berat umbi segar, berat umbi kering matahari, berat tajuk kering, dan serapan kalium. Trichokompos berpengaruh pada tinggi tanaman, jumlah daun, diameter umbi, berat umbi segar, berat umbi kering matahari, dan serapan kalium. Hasil penelitian menunjukkan bahwa aplikasi pupuk kalium pada media tanam yang sudah cukup unsur hara kalium tidak efektif. Aplikasi trichokompos dosis 10 ton/ha sudah mampu meningkatkan produksi bawang merah asal True Shallot Seed (TSS).Kata kunci: Fotosintesis, Unsur Hara, Umbi Mini ABSTRACT The application of onion cultivation technology from True Shallot Seed (TSS) is a positive start in overcoming the problem of tuber seeds faced by farmers. Through potassium fertilization technology and trichocompost can maximize the production of shallots. The research was conducted on 15 February 2022 – 12 August 2022 at the Greenhouse, Laboratory of Physiology and Plant Breeding, Faculty of Animal Husbandry and Agriculture, Diponegoro University. The study used a factorial Completely Randomized Design with 2 factors. The first factor is the dose of potassium fertilizer with 4 levels of treatment, namely: K0 = Control; K1 = 57 kg/ha K2O; K2 = 114 kg/ha K2O; and K3 = 171 kg/ha K2O. The second factor is the dose of trichocompost chicken manure with 4 levels of treatment, namely: T0 = Control; T1 = 10 tons/ha; T2 = 20 tons/ha; and T3 = 30 tons/ha. The experiment consisted of 16 treatment combinations with 3 replications. The results showed that potassium fertilizer had an effect on the parameters of plant height, tuber diameter, fresh tuber weight, sun dried tuber weight, dry crown weight, and potassium uptake. Trichocompost had an effect on plant height, number of leaves, tuber diameter, fresh tuber weight, sun dried tuber weight, and potassium uptake. The results showed that the application of potassium fertilizer on growing media that had sufficient potassium nutrients was not effective. The application of trichocompost at a rate 0f 10 tons/ha increased the production of shallots from True Shallot Seed (TSS).Keywords: Photosynthesis, Mini Bulbs, Nutrient
Sonoplasma Frequency Tuning of Electric Pulses to Modulate and Maximise Reactive Oxygen Species Generation
Authors: Mikhalev Egor Stanislavovich , Kamler Anna Vladimirovna , Bayazitov Vadim Muratovich , Sozarukova Madina Magamedovna , Nikonov Roman Viktorovich , Fedulov Igor Sergeevich , Mel'nik Elena Aleksandrovna , Ildyakov Alexander Valerevich , Smirnov Demid Vladimirovich , Volkov Mikhail Sergeevich , Varvashenko Dmitry Vladimirovich , Cravotto Giancarlo 
Published: September 2024

The wastewater problem is becoming an increasingly significant environmental issue affecting various aspects of human activities. The generation of reactive oxygen species (ROS) in water through certain physicochemical processes, which can oxidize or degrade various organic and chemical compounds, offers an effective purification method. The main advantage of these methods is the elimination of chemical reagents. Aim of this work is to investigate the possibility of regulating the ROS content in water by altering the characteristics of the plasma discharge that occurs under hydrodynamic cavitation in the water flow. ROS concentration was determined using the permanganate oxidation titration technique. It was found that the content of various reactive oxygen species in water after treatment can be controlled by varying the power of the electrical pulses applied. Additionally, the study obtained the dependence of ROS concentration in treated water samples on storage time, indicating a prolonged effect of sonoplasma treatment on the antibacterial properties of water. Analysis of water samples using a biological test culture of Salmonella typhimurium revealed bacteriostatic properties of the water for at least 48 hours after sonoplasma discharge treatment.
Performance Analysis of Through Tubing Sand Screen Application in Offshore East Malaysia
Authors: Zin Z. M , Lin L. Onn , Chandrakant A. A. , Nizam Z. M , Meng T. Kah 
Published: September 2024

Abstract
Through Tubing Sand Screen (TTSS) is routinely used as a remedial sand control solution by the Operator to mitigate sand production in offshore wells located in East Malaysia. A smaller outer diameter (OD) wire-wrap or premium mesh screen is retrofitted inside or set at the end of an existing tubing to filter sand coming from failed primary sand control zone or when there is no sand control installed. The solution has been adopted extensively to mitigate sand production from existing wells as a low-cost application with relatively simpler installation and retrieval operation via slickline, consequently allows for fast reactivation of sand producing wells. Given the large number of installations carried out by the Operator yearly, and most of them recurring in nature, a study is conducted on the past TTSS installations to understand the performance and develop a workflow for design and operation with the aim of improving future installations.
This study is done by analyzing past TTSS installations and the associated production performance including sand production parameter i.e. sand count. Parameters such as screen type, length, opening size and installation depth are studied to evaluate the impact to the production performance and the screen service life. Wells with premature TTSS failure are selected for detailed teardown study, whereby the retrieved TTSS joints are sent to workshop to be cut and analyzed for failure mechanisms such as erosion and plugging.
Outcome of the study includes a workflow that addresses the main design and operation consideration for TTSS installation capturing the best practices of past installations. Additionally, the study is used to develop strategy for TTSS installations including the required changeout frequency based on the lifespan and inventory management.
The paper describes a study on the TTSS performance analysis including selected case studies and teardown analysis. Also, workflow on TTSS design, selection and installation will be discussed.
Resident Ecology Production Enhancement Success in the North Sea
Authors: Venske Christopher , Viveros Linda Tatiana Lezama , Diver Colin , Hill Colin , Carroll Michael , Colmenares Juan 
Published: September 2024

Abstract
A Company in the United Kingdom who operates a field in the North Sea has been involved in a pilot study to determine the efficacy of Organic Oil Recovery (OOR) as a means of maximising oil recovery. This paper shows the process, planning and execution of the application of the technology as well as results of the OOR Pilot Test. Organic Oil Recovery (OOR) is a unique enhanced oil recovery process. The fundamentals of the technology are based on the activation of microbial life resident in oil reservoirs with the purpose of increasing oil production. The technology can dramatically improve the mobility of oil trapped in tight pore spaces or on the oil-bearing rock to improve ultimate oil recovery. This Pilot Test (In-Situ Microbial Response Analysis – ISMRA®) is implemented by injecting a reservoir specific nutrient blend directly at the wellhead with typical pumping equipment. The well is then shut-in for an incubation period and thereafter returned to production. Another important feature of the technology is its ability to tackle the root cause of H₂S formation by targeting specific species of microbes to outcompete Sulphate Reducing Bacteria (SRBs) which are a primary cause of this gas's formation. During initial laboratory testing, Field X target wells showed a diverse and abundant resident ecology which has been proven capable of undergoing the necessary characteristic changes to facilitate enhanced oil recovery in the Field X reservoir. An important observation was that the ecology was initially dominated by Sulfidogens. The Pilot Test was undertaken in Q4 2023 and showed an average 30-35% increase in overall production. The full method of implementation of the Pilot Test, from sampling to injection, will be discussed in detail in this paper, and will include any challenges and/or successes in this area. The initial state ecology reports of the wells are demonstrated and compared to that of post-Pilot Test ecology reports, which proved a substantial shift towards the targeted ecology which resulted in a &gt;99% decrease in sulfidogens. This will be substantiated by production figures for the well prior to the Pilot Test as well as after the pilot implementation. A correlation is demonstrated between changes in ecology and an increase in production.
Measuring and Profiling Water Ingress in an Emulsion Flow with a Compact Array Production Logging Tool and Successfully Shutting Off Water
Authors: Vevakanandan V. , Aziz Mokhtar Abd , Schoepf V. , Barnabas Y. 
Published: September 2024

Abstract
Water-in-oil emulsion represents a substantial volume of the produced water while the process of demulsification at surface remains costly. Accurately determining the source of water in oil producers with emulsion flow remains a challenge for production logging (PL). This paper presents a case study that shows how an innovative PL suite meets the main objectives of delivering a robust and accurate diagnostic of water ingresses and of informing an operational decision of a water shut off in an open hole gravel completion.
After a history of deploying legacy centralized PL strings with sub-optimal probe and measurement capabilities in emulsion flow regimes, an operating company elected to deploy a third generation Production Logging Tool (PLT) which ultracompact length of 1m results from use of microelectromechanical systems (MEMS). The PL platform combines centralized measurements of pressure, temperature, Doppler, MML (CCL) with oriented azimuthal array holdups and flow speed sensors. The holdup measurements consisted of proven triphasic optical probes and conductivity probes and of newly developed micro-capacitances designed to sense micrometer water droplets in oil continuous phase. The PL survey was acquired on memory and deployed on slickline during well shut-in and at three different flowing rates.
Very consistent and reliable gas holdup was measured by the triphasic optical probes through the whole acquisition. The water holdup was calculated using the micro-capacitance data as it proved to be the most accurate, in particular during the highest rate. The optical water holdup agreed well with the capacitance at intermediate and lower rates. The electrical probes were affected by water emulsion flow and stopped detecting water at flow speeds larger than 200 fpm (feet per minute). Excellent flow speed measurements were obtained with the robust micro-spinners covering a wide range of flow speeds from a few fpm up to 500 fpm. The main source of water was located at the bottom of the gravel pack completion. The PLT was run with an innovative combination of flow speeds and holdups sensors that allowed to reliably diagnose the water ingresses. Based on these results, a water shutoff intervention job was decided, implemented and coupled with a gas lift valve change to improve the gas lift injection that eventually led to a significant increase in oil production close to 1000 bbl/day and 10-point reduction in water cut.
The extremely compact PLT with collocated holdup and flow speed sensors enable to deploy array production logging with limited rig up height. State of the art methods for measuring water holdups such as resistivity or conductivity fail in these extreme conditions due to the extremely small size of water droplets. The newly developed micro-capacitances are designed to sense micrometer water droplets in oil continuous phase, which is typically of emulsion flow.
Well Placement Optimization Using Mixed Integer Programming
Authors: Abouheit F. F. , Al-Ismael M. A. , Baig R. R. 
Published: September 2024

Abstract
Placement and design of wells in high potential regions within hydrocarbon reservoirs is a critical step in field development planning. Identification of high potential regions, serving as pivotal extraction zones, doesn't address the challenges in maximizing ultimate hydrocarbon recovery. This identification needs to be complemented by optimizing wellbore placement and design. This paper presents an efficient mathematical optimization method for well placement that maximizes the contact with the productive zones with best locations in the reservoir. The method starts by transforming the high potential 3D grid cells in the reservoir model into a set of nodes. The relationships between each node with its neighboring nodes are defined using the concept of graph theory. Several governing mathematical equations are formulated to define the objective function and constraints to satisfy the requirements for the well design. The objective function in this work is the maximization of the contact of well trajectory with the best grid cells represented by the nodes in space. An MIP (Mixed-Integer Programming) solver is used to solve these equations to maximize the predefined objective function subject to the formulated constraints. The solver represents an effective mathematical modelling approach to solve complex optimization tasks. In addition, it identifies the potential trade-offs between conflicting objectives, which can provide a better understanding of bioenergy systems and support decision-makers elaborating the sustainable pathways towards bioenergy targets. Moreover, it creates meaningful connections between the nodes which define practical wellbore trajectory paths that adhere to constraints such as area of interest, well geometry and anti-collision. The proposed optimization method was tested on a synthetic reservoir model with a size of six million grid-cells to place twenty-five producers on a 3D sweetspot map. The method was able to find the best proposal of new wells, which were accurately positioned in the most lucrative and highest-quality grid-cells, ensuring smooth pathways across multiple grid layers. The method doesn't only aim for well placement, but for a joint relationship between optimal design and reservoir potential. Furthermore, the proposed method leads to approximately 80% reduction in turnaround time compared to traditional and manual well placement and other optimization methods. The design capability coupled with the mathematical optimization in this work enables exploring innovative approach in the realm of advanced field development strategies. The approach facilitates employing advanced mathematical modeling techniques to devise optimum and economically feasible full-field development plans.
Automated Sand Influx Mitigation Workflow Using Geomechanical Analysis and Minimum Tubing-Head Pressure Estimation
Authors: Kumar P. , Gogoi U. , Bhatt B. , Dhiman A. , Chatterjee C. , Subbiah S. 
Published: September 2024

Abstract
Sand production is a major challenge for oil and gas companies worldwide. We describe an automated workflow that helps mitigate sanding caused by excessive drawdown by determining the minimum tubing-head pressure (THP). The automated workflow is designed to autocalibrate, analyze, and recommend actionable measures to control THP to prevent sand ingression. This enables oil and gas operators to control sand production, resulting in production enhancement and fewer workover jobs.
The operating philosophy consists of four components: 1D geomechanical analysis, sand ingression analysis, wellbore modeling and automated calibration, and automated minimum THP estimation. A 1D Mechanical Earth Model (1D MEM) calibrated with drilling events and caliper data was used as an input to the sand prediction model. The sand prediction model evaluates critical drawdown pressure (CDDP) and establishes a sand-free envelope. A calibrated digital twin is created using well test parameters. The automated sand mitigation workflow uses CDDP values and well models. The minimum flowing bottomhole pressure estimated from CDDP is translated into minimum THP for regular monitoring and sand control by the production team.
In this work, we examined the scale, complexity, technology, and advantages of using the digital oil and gas field workflow. Self-flow gas wells were considered as potential candidate wells for the study. The excellent results obtained from this study in terms of production enhancement can set a benchmark for projects concerning efficiency and output gains. Detailed analysis helped classify wells where production gain can be realized without any sand production. Through the study, it was observed that in two wells, THP reduction in steps can potentially lead to sand-free production, with a possible cumulative incremental gas production increase over 100%. Such analysis reiterated the significance of maintaining the minimum THP estimated by the workflow and resulted in a significant shift towards the adoption of digital and integrated workflows for problem solving, ultimately leading to improved operational efficiency and profitability.
The integration of state-of-the-art geomechanical analysis and automated workflows produced outstanding results in terms of production gain and reduced analysis time, thereby leading to extended well deliverability, delayed sand production and reduced workover frequencies. This approach provided efficient management and control of minimum THP values without relying on downhole pressure gauges, thus empowering the production team to make informed decisions and optimize production, ultimately saving on well maintenance costs.
Mitigating Polymer Damage with Strategically Designed Hydraulic Fracturing Treatments in a Multi Darcy Reservoir
Authors: DCruz R. , Jha A. K. , Narayan S. , Pramadana A. B. , Choudhary D. , Kumar M. , Sardesai P. , Kanaan S. , Sharma A. , Shrivastava P. , Kumar P. , Bohra A. , Tiwari S. , Deepankar D. , Pawar S. 
Published: September 2024

Abstract
Mangala Field is one of the world’s largest polymer flood projects and is currently at a total recovery of 37% over 15 years of production. Strategically designed polymer flooding has played a key role in augmenting the production numbers, but over time has posed significant challenges in injector and producer performance. A pilot hydraulic fracturing campaign of 11 wells has shown significant, sustained improvements in productivity index. The fracturing process effectively bypassed the damage caused by polymer injection, resulting in reduced near-wellbore formation damage and improved injectivity. The work progressed from the pilot tests to streamlined fracturing treatments in over 100 wells in the field.