bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analisis Kemampuan Berpikir Kreatif Siswa Kelas V pada Mata Pelajaran SBdP Materi Menggambar Cerita di SD Negeri Taman Pagelaran Bogor Tahun Ajaran 2022/2023
Authors: Qotrunnada Azzahra , Rokhmaniyah Rokhmaniyah , Chamdani Muhammad 
Published: January 2025

<p class="TableParagraph">Penelitian ini bertujuan: (1) menjelaskan kemampuan berpikir kreatif siswa dalam materi menggambar cerita, (2) mengetahui hasil kemampuan berpikir kreatif siswa dalam materi menggambar cerita, dan (3) menganalisis faktor-faktor yang memengaruhi kemampuan berpikir kreatif siswa. Penelitian ini merupakan penelitian kualitatif dengan pendekatan studi kasus. Teknik pengumpulan data menggunakan observasi, angket, wawancara, dan dokumentasi. Validasi data menggunakan triangulasi sumber. Analisis data dilaksanakan melalui reduksi data, penyajian data, dan verifikasi. Sumber data penelitian ini meliputi tempat dan peristiwa, informan dan dokumen. Teknik pengambilan sampel menggunakan <em>purposive sampling. </em>Hasil penelitian ini yaitu, (1) pelaksanaan pembelajaran menggambar cerita di SD Negeri Taman Pagelaran Bogor masih belum seluruhnya berjalan dengan baik; (2) hasil karya siswa dalam menggambar cerita cukup baik dengan nilai rata-rata 80 dengan kategori baik 15 siswa, kategori sedang 8 siswa, dan kategori kurang 3 siswa; (3) faktor pendukung di antaranya adanya guru SBK dan peranan dan fasilitas yang diberikan orang tua, dengan faktor penghambat di antaranya beberapa siswa sulit diatur, kurang bersungguh – sungguh, dan pemanfaatan sumber belajar ketika berkarya yang kurang tepat bagi siswa, ruang perpustakaan tidak cukup luas.</p>
Penerapan Model Pembelajaran Problem Based Learning (PBL) Berbantuan E-LKPD Untuk Meningkatkan Kemampuan Siswa Dalam Memecahkan Masalah Pada Materi Sistem Respirasi Manusia
Authors: Nurhalisa Sarifa , Juanda Anda , Muspiroh Novianti 
Published: January 2025

<p>Dewasa ini, Pendidikan erat kaitan-nya dengan perkembangan zaman mengenai teknologi dan keterampilan abad ke-21 yang harus dikuasai oleh setiap siswa, salah satunya yang diamati pada penelitian ini yaitu kemampuan memecahkan masalah. Penelitian ini bertujuan untuk menganalisis peningkatan kemampuan memecahkan masalah pada siswa yang diterapkan model <em>Problem Based Learning </em>(PBL) berbantuan E-LKPD dengan siswa yang tidak diterapkan model tersebut pada materi sistem respirasi manusia. Penelitian ini menggunakan pendekatan kuantitatif eksperimental dengan desain penelitian <em>Quasi eksperimental design</em> bentuk <em>pretest-posttest control group design</em>. Adapun hasil temuan dalam penelitian ini adalah 1) Penerapan model <em>Problem Based Learning </em>(PBL) berbantuan E-LKPD ini dapat meningkatkan aktivitas siswa dengan sangat efektif; 2) Terdapat perbedaan peningkatan kemampuan memecahkan masalah antara siswa yang diterapkan model <em>Problem Based Learning </em>(PBL) berbantuan E-LKPD pada materi sistem respirasi dengan yang tidak; 3) Respon siswa terhadap penerapan model <em>Problem Based Learning </em>(PBL) berbantuan E-LKPD berorientasi masalah menunjukkan kriteria kuat.</p>
Pengaruh Penggunaan Bahan Ajar Berbasis Problem Based Learning Terintegrasi Pendekatan Berdiferensiasi Pada Materi Keliling Dan Luas Bangun Datar Terhadap Hasil Belajar Peserta Didik Kelas V Di Sekolah Dasar Penggerak Kota Bengkulu
Authors: Tusa'Idah Rabiah , Agusdianita Neza , Yusnia Yusnia 
Published: January 2025

<p>Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan bahan ajar berbasis <em>problem based learning</em> terintegrasi pendekatan berdiferensiasi pada materi keliling dan luas bangun datar terhadap hasil belajar peserta didik. Metode riset yang digunakan yakni metode eksperimen semu (<em>Quasy Eksperimen</em>) dan desain T<em>he Matching Only Pretest-Posttest Control Group Desain</em>. Hasil uji hipotesis pada kelompok eksperimen menunjukkan bahwasanya nilai t<sub>hitung </sub>dengan memakai <em>Equal Variences Assumed </em>= 3,967 dan nilai Sig. (2-tailed) bernilai 0,000 serta nilai distribusi t<sub>tabel</sub> sebesar 1,672, sehingga t<sub>hitung</sub> &gt; t<sub>tabel </sub>(3,967 &gt; 1,672) dan Sig. (2-tailed) 0,000 &lt; 0,05. Data ini menunjukkan bahwasanya terdapat perbedaan hasil belajar pada kelompok eksperimen dan kelompok kontrol yang disebabkan oleh perlakuan kedua kelas yang berbeda. Berlandaskan hal tersebut bisa disimpulkan bahwasanya terdapat pengaruh pemakaian bahan ajar berbasis <em>problem based learning</em> terintegrasi pendekatan berdiferensiasi pada materi keliling dan luas bangun datar terhadap hasil belajar peserta didik kelas V di sekolah dasar penggerak Kota Bengkulu.</p>
Best Practices in Evaluating and Selecting New Friction Reducers for Permian and Marcellus Hydraulic Fracturing Operations
Authors: Muhammed F. A. , Sullivan K. , Bowers A. , Middleton G , Thorpe R. , Aften C. 
Published: January 2025

Abstract
Given the critical role of polyacrylamide-based Friction Reducers (FRs) in enhancing the efficiency of hydraulic fracturing, this paper aims to provide a comprehensive framework of best practices for evaluating and selecting FRs that account for varying frac fluid compositions, salinity levels, field equipment, logistics, and economic considerations with a focus on the main U.S based shale plays, Permian and Marcellus. High-viscosity friction reducers (HVFRs) are preferable over guar-based systems for applications requiring higher proppant loading due to their enhanced viscosity profiles and breakability to avoid hindering formation productivity by reducing regained conductivity. The paper also introduces a new generation of FRs developed through systematic formulation optimization to withstand extreme frac conditions.
The evaluation process for FRs employs several industry-standard laboratory methods, including flow loop tests, rheometers’ viscosity measurements, and advanced rheology modeling. Specialized tests such as iron stress and shear resistance assessments simulate real-world conditions. The focus is on understanding FR performance in high Total Dissolved Solids (TDS) conditions, particularly those with high divalent concentrations. This study examines the impact of lateral well lengths exceeding four miles, necessitating new FR chemistries and evaluation techniques.
The findings indicate that conventional anionic copolymer FRs significantly underperform in harsh brine conditions, a common condition in many shale plays. This poor performance highlights the need to optimize FR chemistry based on specific brine composition and proppant loading requirements. Both cationic FRs and highly optimized anionic FRs demonstrate superior performance in extremely high salinity conditions, providing viable alternatives. Shear resistance tests reveal that specifically designed FRs can withstand multiple high-shear cycles, indicating their robustness for deployment deep into the toe of the well. Selection from various FR forms—powder, emulsion, or slurry—depends on logistics, site equipment, and operator preferences. Understanding how FR performs in challenging environments ensures more efficient and reliable hydraulic fracturing operations.
This paper provides novel insights into the formulation and application of FRs under extreme conditions, addressing the challenges posed by high TDS and extended lateral well lengths. This paper also provides practical guidance for optimizing FR-based completion fluids by defining critical TDS levels and cation types that require changes in FR chemistry and dosage. The data presented can help operators enhance FR performance and effectively compare and qualify FRs based on their optimal application range and economic efficiency. This comprehensive approach aims to assist operators and field personnel in making informed decisions to improve hydraulic fracturing outcomes.
FDIs Observations and Analysis with Integrated Geo-Engineering Approach: Case Studies from Multiple Platforms in Sichuan Deep Shale Gas
Authors: Weixu Wang , Shiying Ma , Dongchu Shu , Zhaojian Liu , Fei Wang , Lipeng Wang , Yongjie Huang , Yuan Liu , Zheng Wei 
Published: January 2025

Abstract
FDIs became a major concern for unconventional resources development in the recent years for both north America and the world. In the scenario of parent – child well operations, the fracturing and completion in the child well often incur unexpected pressure response in the parent well, which commonly results in operation and production uncertainty in both wells. In this paper, we captured the FDIs cases from multiple Sichuan deep shale gas platforms, and we used an integrated geo-engineering method to analyze the FDIs behavior and main controlling mechanisms.
Sichuan deep shale gas was first explored and tested in the late 2010s in Silurian Longmaxi formation buried about 4000 meters below. As the production potential proved to be high, large scale development plan has been deployed in many locations in the form of pad drilling and completions. Since early 2020s, FDIs was frequently reported in Sichuan deep shale gas, and it has raised concerns for the potential impairment to the operations and productions. In this study, we collected FDIs facts from multiple pads in Da’an area, where a detailed geology model was available to provide reservoir insights. We tracked the operation from 3 different pads, where 247 stages of fracturing operation were completed in 9 horizontal wells. The FDIs behaviors from the offset parent wells were classified into 3 different groups based on their timing, pattern, and severity, and they were compared with the drilling and completion design, the fault or nature fracture in-situ situation from the model, the on-site microseismic monitoring result, and the later production performance. It was concluded that the well spacing, lateral landing, perforation cluster strategy, fracturing volume, and the nature fracture status were all influential for FDIs.
This integrated approach provides a comprehensive opinion of why the FDIs happen, what consequences FDIs may incur, and how to avoid the negative impacts from FDIs. In our study, some just-in-time adjustments were effective to mitigate the impact of the FDIs on-site, which proved the value the geo-engineering efforts. Yet to prevent FDIs in the similar scenario in a larger scale, integrated geo-engineered approach needs to be deployed during the entire well planning, drilling, and completion phases.
A Process for Evaluating and Optimizing Frac Plug Performance
Authors: Douglas Cody , Watson Mark , Cramer Dave , White Matt , Schlittler Robin 
Published: January 2025

Abstract
This paper provides a detailed workflow for determining frac plug effectiveness and establishes characteristic diagnostic responses associated with specific failure mechanisms. The overall process as outlined in the paper can be used to assist providers in developing high-performance frac plugs that reliably provide isolation from previous frac stages, even when abrupt injection rate changes occur during the treatment.
Bedding Plane Slippage and Fault Reactivation Captured by Cross-Well LFDAS Monitoring During Hydraulic Fracturing
Authors: Wang Wen , Mjehovich Joseph , Chen Liqing , Jin Ge , Li Junfeng , Fu Xiaosong 
Published: January 2025

Abstract
This study provides the first direct observations of horizontal bedding plane slippage detected using cross-well low-frequency distributed acoustic sensing (LFDAS) during hydraulic fracturing stimulation in the Sichuan Basin, China. Traditional completion designs assume vertical tensile fracture propagation; however, under certain stress and geological conditions, fractures may grow horizontally, reducing stimulation efficiency and posing risks such as induced seismicity and wellbore deformation issues. Distributed strain signals captured in a horizontal observation well displayed elliptical contours spanning multiple stages (300-700 m), characteristic of horizontal fracture growth. Additionally, fault reactivation triggered by the horizontal fracture propagation is identified through a paired dipole-stripe signature in the strain signal.
To validate these interpretations, a displacement discontinuity method based geomechanical model was applied, history-matching the LFDAS strain signals observed during selected treatment stages. The model confirmed that a shear deformation component is required for horizontal fractures to match field signals, implying bedding plane slippage. It also verified hydraulic connectivity between several natural faults and the horizontal fracture plane during injection, leading to fault reactivation.
These findings demonstrate the value of cross-well strain monitoring combined with advanced modeling techniques in understanding fracture behavior in complex geological settings. Recognizing the role of geological factors, such as weak bedding planes and natural faults, is essential for accurately predicting fracture growth, optimizing stimulation strategies, and minimizing risks in unconventional reservoir development.
Feature-Driven Interactions: The FDI Evolution
Authors: Senters C. W. , Leonard R. S. , Woodroof R. , Wood T. 
Published: January 2025

Abstract
The objective of this paper is to explore the potential of an enhanced classification of "frac hits" or fracture-driven interactions (FDIs) in the context of localized reservoir features. This study introduces a novel classification of FDIs, emphasizing the influence of localized geologic features. By integrating advanced diagnostics and an enhanced metric, ‘communication intensity,’ the paper offers a unique approach to benchmarking well communication. Case studies demonstrate the impact of geologic features and depletion on communication intensity and productivity. The findings highlight the importance of considering geologic features and depletion effects in well development plans to optimize well performance and minimize negative impacts during hydraulic fracturing.
An Experimental Investigation of the Effect of Lithology, Pore Pressure, and Stress on the Magnitude of Induced Seismicity Events
Authors: Sathyanath Arun , Sharma Mukul M. 
Published: January 2025

Abstract
The rise in induced seismicity resulting from the injection of produced water into aquifers poses operational challenges and raises public concern. Understanding the stick-slip motion of faults may offer strategies for mitigating this issue. This study aims to investigate the effects of various lithologies and changes in effective stress on the magnitude of stick-slip events and the slow creep of rock. Knowledge of rock lithology and effective pressure management could be critical in controlling induced seismic events.
Experiments were conducted on rock samples with different lithologies using a modified triaxial double-direct shear apparatus. Each cylindrical sample, measuring 1.5 inches in diameter and 2.5 inches in length, was divided into three pieces. These pieces were stacked together, wrapped in a heat shrink tube, and loaded into the modified triaxial cell. A predefined normal load and pore pressure were applied and stabilized. After stabilization, the axial load or shear stress was increased monotonically to measure the magnitude of the induced slip along the fault and changes in permeability. Samples with varying silica, calcite, and clay content were tested under different loading conditions to examine how the magnitude of stick-slip events, rock creep, and fault permeability change.
The results clearly demonstrate that the magnitude of stick-slip events and slow creep of the fault depends on both lithology and loading conditions. The magnitude and frequency of stick-slip events were higher in rocks containing minerals with greater hardness, such as quartz. In contrast, rocks with high calcite content exhibited significantly smaller and less frequent stick-slip events, with smooth sliding and creep being predominant. The stick-slip motion of the rock increased with the roughness of the fault, which raised the friction coefficient. The fracture permeability was also related to the hardness of the rocks studied. The permeability reduction due to shear slip of fractures in softer rocks was found to be greater than in hard rocks. The effective normal stress acting on the fault also played a crucial role, with larger magnitude events recorded at higher effective stress levels.
A unique triaxial double-direct shear apparatus was utilized to conduct fault slip experiments. For the first time, the magnitudes of stick-slip events, directly linked to the magnitude of induced seismicity events, the friction coefficient, plastic creep of the rock, and the permeability change of the fracture were all measured simultaneously and correlated with the rock mineralogy and stress conditions. This data provides a window into where induced seismicity events are more likely to occur.
Where is the Heart-Shape Fiber Response? Impact of Poroelasticity on Strain and Frac Height Estimation
Authors: Ratnayake Ruwantha , Ghassemi Ahmad 
Published: January 2025

Abstract
Distributed Strain Sensing (DSS) is frequently used to capture hydraulic fracture propagation and geometry in unconventional reservoirs and Enhanced Geothermal Systems (EGS). DSS fibers are sensitive to strain variations induced by dilation and shear deformation of hydraulic fractures. Traditionally, DSS data have been interpreted with the assumption of an elastic medium, yielding a characteristic heart-shaped strain signature near fracture tips. This study investigates the impact of poroelastic effects on DSS responses, showing that fracture propagation does not necessarily produce a heart-shaped signature due to poroelasticity and other fracture deformation modes. Using a fully-coupled poroelastic 3D hydraulic fracture simulator, three scenarios are analyzed where the heart-shaped strain signature is absent. In the first scenario, when the fracture undergoes shear deformation, the fiber strain signature deviates significantly from the typical pattern, showing tensile strain in the middle and compression at the ends of the fiber due to stretching and compression caused by shear deformation. In the second scenario, a propagating hydraulic fracture in a poroelastic reservoir produces an oval-shaped strain signature with tensile strain throughout the fiber and no compression zone following the fracture tip arrival, different from prediction by an elastic model. In the third scenario, fracture height growth is analyzed. Using an elastic impermeable model, often the fracture height is estimated a sign change in the strain plot, but in poroelastic reservoir, the recorded strain remains tensile across the fiber, so that the fracture height is overestimated by the conventional approach. These results suggest that poroelasticity plays a significant role in DSS responses, challenging conventional interpretations and offering important implications for hydraulic fracture diagnostics.
Field Data Interpretation of Cross-Well Strain Measurements with Slippage Effect Using Single-Use Fiber in the Anadarko Basin
Authors: Song Xueling , Jin Ge , Wu Kan , Pelton Kevin , Ingle Trevor 
Published: January 2025

Abstract
Cross-well low-frequency distributed acoustic sensing (LF-DAS) is a valuable tool for monitoring strain changes induced by fracture propagation, identifying fracture hits, and providing insights into fracture geometries. Single-use fiber, a cost-effective option for cross- well monitoring, is commonly used, but it is prone to slippage under large strain changes caused by fracture hits, complicating data interpretation. This study addresses the challenge by applying a developed interpretation method to cross-well strain data obtained using single-use fiber in the Anadarko Basin, where slippage effects are significant.
Our methodology combines comprehensive field data analysis with the visualization of five-parameter plots to interpret strain data from single-use fiber. By utilizing this five-parameter framework (Song et al., 2024), we effectively identify fracture hit numbers, locations, and timings, even under severe slippage conditions. Additionally, we propose four categories to quantify the uncertainty in interpreting strain data affected by fiber slippage.
The field data illustrate the complexity of LF-DAS signals with notable slippage and underscore the need for standardized guidelines in fracture-hit interpretation. Analysis of stages from the toe to the heel of the offset well shows reduced slippage asymmetry and improved data quality in near-heel stages. The five-parameter visualization method successfully interprets single or multi-fracture hits, revealing correlations between slippage levels, fracture hit frequency, and well spacing. Most fracture azimuths align with N85°E, with an average fracture propagation speed of 20-40 ft/min and fracture half-lengths ranging from 1,500 to 3,000 ft. Maximum strain gradients of 0.03 to 0.05 με/ft were observed, indicating frictional resistance between the fiber and the wellbore.
This study presents the first comprehensive analysis of cross-well strain data from single-use fiber experiencing slippage, providing valuable insights into how slippage impacts data interpretation. The proposed five-parameter interpretation method offers a robust framework for industry-wide application and has the potential to set a standard for fracture-hit interpretation using LF-DAS data in various slippage scenarios.
RNAs anchoring replication complex control initiation and firing of DNA replication
Authors: Ruscio Annalisa Di , Ummarino Simone , Poluben Larysa , Ebralidze Alexander , Autiero Ida , Zhang Yanzhou , Paniza Theodore , Deshpande Madhura , Rinaldi Lucrezia , Lee Jonathan , Bassal Mahmoud , Trinh Bon , Balk Steven , Flaumenhaft Robert , Gerhardt Jeannine , Mirkin Sergei , Tenen Daniel 
Published: January 2025

Abstract

Coordinated initiation of DNA replication is essential to ensure efficient and timely DNA synthesis. Yet, molecular mechanism describing how replication initiation is coordinated in eukar-yotic cells is not completely understood. Herein, we present data demonstrating a novel feature of RNAs transcribed in the proximity of actively replicating gene loci. We show that RNAs aN-Choring ORC1 (ANCORs) to the histone variant H2A.Z are licensors of the DNA replication process. This ANCOR-H2A.Z interaction is essential for cells to initiate duplication of their ge-netic material. Widespread and locus-specific perturbations of these transcripts correlate with anomalous replication patterns and a notable loss of the H2A.Z replicative marker at the origin site. Collectively, we present a previously undescribed RNA-mediated mechanism that is associ-ated with the generation of active replication origins in eukaryotic cells. Our findings delineate a strategy to modulate the origins of replication in human cells at a local and global level, with potentially broad biomedical implications.