bluuebunny/crossref_metadata_2025_split huggingface dataset:
Easy, fast, cheap, informative, and pretty – staining of plant sections with Mayer’s mucicarmine and Lugol’s reagent
Authors: Łotocka Barbara 
Published: September 2023

Abstract
A novel combination of widely used commercial histochemical reagents, Mayer’s mucicarmine and Lugol’s reagent, was applied to survey anatomical analysis of various plant organs: Euphorbia splendens stem, Hibiscus rosa-sinensis petiole, Homalocladium platycladum stem base, Phalaenopsis sp. aerial root, Rhipsalis sp. stem, Schoenoplectus lacustris stem base, and Urtica dioica stem primary structure. The staining resulted in red coloration of non-lignified cell walls and mucilage, yellow coloration of lignified cell walls and protein-rich components of the protoplasts, and dark staining of starch. The method was found to be cheap, easy, fast, and informative, and thus widely applicable in both teaching and research.
Academic stress and social network addiction in Peruvian university students
Authors: Miñan Olivos Guillermo Segundo , Flores Capcha Jenny Caroly , Piñas Illanes Andrea Rosario , Suria Huincho Yesica Sonia , Toledo Figueroa Wendy Karina , Garcia Zarzosa Jhon Anderson , Mejia Huerta Gian Carlos 
Published: September 2023

Introduction: academic stress and addiction to social networks are current issues that affect many university students in Peru given the technological advancement and competitiveness of modern education.
Objective: to analyze the relationship between social network addiction and academic stress in Peruvian university students.
Methods: quantitative, correlational, cross-sectional, non-experimental study. Validated and reliable questionnaires were applied to 168 university students who formed a sample with a margin of error of 5 % and a confidence level of 95 %.
Results: academic stress was at a medium level while addiction to social networks was at a medium-high level. The most relevant inferential results showed that academic stress had a moderate negative relationship with the dimensions of social network addiction: Obsession (Spearman’s Rho = -0,434, p< 0,001), Lack of control (Spearman’s Rho = -0,462, p< 0,001) and Excessive use (Spearman’s Rho = -0,501, p< 0,001).
Conclusions: it was possible to determine a moderate negative relationship between academic stress and addiction to social networks (Spearman Rho = -0,482, p < 0,001), that is, it could be concluded that university students who experience higher levels of academic stress tend to use social networks less addictively
Research-Supported Framework for Developing Paraprofessional In-Service Trainings in O&M
Authors: Casias Nicholas Brian 
Published: September 2023

Abstract
This study examined in detail the roles and responsibilities of paraprofessionals who work with students with visual impairments in public schools as recommended by experts/practitioners (within the itinerant orientation and mobility [O&M] service delivery model) to influence and develop in-service training and supervision methods.
From Participant to Facilitator: A Caregiver's Experience Leading in a Virtual Intervention
Authors: Lieberman Lauren J. , Hazzan Afeez , Beach Pamela 
Published: September 2023

Abstract
Caregivers of older adults who have a visual impairment spend thrice as much time supporting their loved ones. The purpose of this study was to examine the unique experiences of one caregiver who began a 10-week virtual intervention as a participant and progressed to leading activities during the workshops. The participant in this case study was a caregiver of a loved one with a visual impairment. Results were obtained by triangulation of the data including one interview, a weekly journal, and workshop observations by the three researchers who facilitated the intervention. The following three themes were derived: (1) quality of life, (2) purpose, and (3) empowerment. Results revealed that the engagement of a caregiver in the cofacilitation of an intervention could have a positive impact on the caregiver and their loved one.
Studi Awal Pemodelan Aerodinamika Sayap Pesawat Tanpa Awak Kecepatan Rendah
Authors: Mulyadi Mulyadi , Siagian Tony 
Published: September 2023

Penelitian ini merupakan studi awal proses perancangan Pesawat Tanpa Awak. Studi awal ini dilakukan untuk melihat pengaruh bentuk sayap terhadap tekanan yang terjadi pada permukaan sayap PTA dan analisis model aliran udara yang terjadi pada permukaan sayap PTA dan sekitarnya yang sangat diperlukan untuk proses perancangan selanjutnya. Studi ini menggunakan pemodelan metode elemen hingga berbantu komputer. Komputasi dinamika fluida memanfatkan Perangkat lunak Freecad 0.21 melalui workbenches yang tersedia didalamnya yaitu OpenFOAM® Computational Fluid Dynamics. Bentuk sayap yang dimodelkan terdiri dari sayap lurus, sayap tapered dan sayap tapered-lengkung dengan panjang 1000 mm dan profil NACA 6412. Panjang mean chord adalah 100 mm untuk sayap lurus dan 80-120 mm untuk sayap tapered. Kecepatan pesawat tanpa awak dalam pemodelan ini yaitu 20 m/s dengan sudut serang 2 derajat. Hasil pemodelan diproses lebih lanjut menggunakan perangkat lunak Paraview 5.5.2. Hasil menunjukkan bahwa tekanan permukaan maksimum terjadi pada leading edge sayap pesawat yaitu sebesar 190 Pascal pada sayap lurus dan 210 Pascal pada sayap tapered-lengkung. Distribusi aliran udara pada profil sayap menunjukkan aliran laminar tanpa ada aliran pusar setelah meninggalkan sayap. Distribusi tekanan udara pada profil menunjukkan terjadi perbedaan tekanan antara bagian bawah dan bagian atas sayap yang menghasilkan gaya angkat pada sayap sebagaimana yang diinginkan.
Geomechanical-Integro-Differential Solution for Biot's Effective Stress-Sensitive Permeability Monitoring During the Well-Reservoir Drawdown
Authors: Fernandes F. B. , Braga A. M. B. , Souza A. L. S. , Soares A. C. 
Published: September 2023

ABSTRACT
Incorporating geomechanics to flow models become the mathematical formulation regarding well-test and reservoir engineering more realistic because geomechanical parameters, e.g., in situ and overburden stress, as well as Biot's coefficient, play a fundamental role in pressure response. Hence, permeability stress-sensitive oil reservoirs are the scope of various research in the petroleum industry for minimizing formation damage during drilling, completion, and stimulation operations. This work develops a new analytical solution for the nonlinear hydraulic diffusivity equation (NHDE) with instantaneous point-source/sink effects in Biot's effective stress-sensitive oil reservoirs. The proposed model considers Biot's effective stress change in the permeability response, and a new deviation factor is derived from comparing the nonlinear effect concerning the constant permeability classical solution and a decoupled case available in the literature. The calibration methodology is performed using a numerical simulator named IMEX®, widely used in formation evaluation works, and the results presented high convergence. The findings of this study allowed us to notice the role of overburden stress, oil flow rate, deviation factor, and Biot's coefficient in permeability change during production in the diagnostic plots. Thereby, the modeling developed in this paper becomes a useful and attractive tool for predicting and monitoring permeability loss, oil flow rate specification, and reservoir history matching.

INTRODUCTION
Coupling geomechanics to pressure transient analysis (PTA) has been an important challenge for oil industry. This coupling allows providing the role of geomechanical parameters e.g., overburden stress and Biot's coefficient in permeability loss management. PTA is used for obtaining several well-reservoir information, e.g., formation damage, permeability change, reservoir characterization and management, flow regimes identification, flow potential forecast, and reservoir extension. Hence, minimizing the economic impairments caused by the permeability loss effect during the well-reservoir life-cycle is essential to prevent premature wells abandonment and field disinvestments (Fernandes, 2021a,b). In various formation evaluation and reservoir engineering works, analytical solutions for linear hydraulic diffusivity equation (LHE) using Boltzmann transformation, Laplace and Fourier transform have been extensively applied (Everdingen and Hurst, 1949). Nevertheless, solutions for nonlinear hydraulic diffusivity equation (NHDE) remain a challenge for scientists and engineers, mostly when it involves a source term modeling (Fernandes et al., 2021; Fernandes, 2022; Fernandes et al., 2022a,b,c,d,e).
A TBM Application in Shallow and Weak Ground Conditions (Ankara-Izmir High-Speed Railway Construction Project, Türkiye)
Authors: Karahan S. , Yilmaz O. , Karsli Y. , Gokceoglu C. 
Published: September 2023

ABSTRACT
Tunneling in weak ground and shallow conditions is an extremely difficult task for tunnel engineers. However, depending on the increase in demand for high-speed railways, it requires the construction of many tunnels. The weak rock mass forms the route of the T1 tunnel constructed within the scope of the Ankara-İzmir High-Speed Railway Project. The main purposes of the study are to compare the performances of NATM and TBM in a large diameter railway tunnel, and to present a successful TBM application. The length of the T1 Tunnel is 3047 m and, the tunnel is the longest tunnel of the Ankara-İzmir High-Speed Railway Construction Project. The inner diameter of the tunnel is 12.5 m. The tunnel allows high-speed train passage through a single tube, as well as an escape tunnel. With this feature, it is Türkiye's first single-tube tunnel containing both a railway and an escape tunnel. In addition, the T1 tunnel is the railway tunnel with the largest diameter in Türkiye, constructed with TBM. In the first stage, the T1 tunnel was designed in accordance with NATM principles. The estimated advance rate with NATM was estimated 2.4 m/day while that of with TBM is 10 m/days. Considering time limitation, use of TBM was decided for constructing the tunnel. The overburden along the tunnel varies between 3.7 m – 80.0 m. The lithological units along the tunnel route are gneiss, mudstone, and sandy mudstone. The rock masses along the route are highly weathered and weak character. Consequently, the T1 tunnel was constructed with TBM, successfully. Although the average advance rate was measured as approximately 16 m/day, hence the TBM outperformed. The main reasons for the high performance of the TBM are well-known geological and geotechnical conditions of the tunnel route, and the selection of a suitable TBM.
Fracture Pressure Prediction by Using the LSTM Neural Network Model
Authors: Ma Tianshou , Zhang Dongyang , Yang Min , Liu Yang , Liu Wenming , Dang Yufeng 
Published: September 2023

ABSTRACT
Fracture pressure plays a vital role in petroleum drilling and hydraulic fracturing. Currently, fracture pressure is mainly predicted through logging interpretation, but its calculation process is too complicated, and its accuracy needs to be further improved. Machine learning provides a new measure to address the above problems. Therefore, this paper aims to predict fracture pressure using the Long- and Short-Term Memory (LSTM) neural network method. The fracture pressure data set was generated by logging interpretation, then the nonlinear mapping relationship between logging parameters and fracture pressure was proposed using the LSTM model, and the mesh search method was used to optimize the hyperparameters of the LSTM model, so that the prediction of fracture pressure is realized. The results indicate that the in-situ stress state follows the normal faulting regime, i.e., vertical stress &gt; maximum horizontal stress &gt; minimum horizontal stress. Using the LSTM model with the optimal combination of hyperparameters, the prediction accuracy was significantly improved, and the root mean square error, mean absolute error, mean absolute percentage error, and coefficient of determination of the predicted fracture pressure were 0.304 MPa, 0.176 MPa, 0.209%, and 0.990, respectively. It is concluded that the LSTM model can effectively capture the variation trend of logging parameters with depth and the correlation information of logging parameters, which can realize the accurate prediction of fracture pressure.

INTRODUCTION
Fracture pressure is a very important fundamental engineering parameter that plays a critical role in oil drilling, completion and hydraulic fracturing (Chen et al. 2008; Fjar et al. 2008; Aadnoy and Looyeh 2011; Ma et al. 2017a). In drilling engineering, fracture pressure is the basis of drilling engineering design; if the fracture pressure is less than the effective wellbore pressure, the wellbore will experience tensile fracture (e.g., wellbore fracture or lost circulation), resulting in loss of drilling fluids. Predicting fracture pressure is therefore directly related to the safety of drilling operations. Incorrect or inaccurate prediction of fracture pressure can easily cause various drilling problems, such as lost circulation, induced well blowout, induced well collapse, and drill pipe sticking (Ma et al. 2017b).
Probabilistic Prediction Method of Formation Pore Pressure
Authors: Liu Keyan , Ma Tianshou , Zhou Xiaoyu , Wang Xudong , Deng Changsong , Li Mingxing , Zhu Minghui 
Published: September 2023

ABSTRACT
Formation pore pressure plays a critical role in petroleum drilling and is an indispensable basic parameter for casing program design and mud weight optimization in petroleum drilling. Formation pore pressure can be predicted using seismic, logging and mud log data. However, due to the concealment and complexity of deep formations and the inherent errors in seismic, logging and mud log data, it is always difficult to accurately predict formation pore pressure. In order to quantitatively determine the uncertainty of the formation pore pressure, a probabilistic pore pressure prediction method has been proposed. First, the basic effective stress and dc-exponent methods for pore pressure prediction were introduced. Second, the data processing procedure with sliding window treatment was presented, the statistical characteristics of Eaton index and normal compaction trend (NCT) were investigated, and the quantitative prediction of uncertain formation pore pressure was performed using the Monte Carlo simulation. Finally, the case study of the X-1 well in the Sichuan Basin was conducted, the uncertain pore pressure profile was calculated and compared with measured data, effective stress method and dc-exponent method. The results showed that the pore pressure increases with the increase of Eaton index, while it decreases with the increase of K value, so the influences of uncertain Eaton index and NCT cannot be ignored. The case study showed that all measured pore pressure data are within the pore pressure profile at the 5% to 95% confidence interval, but the conventional prediction methods cannot accurately predict the pore pressure in all cases. The present method integrates both logging and mud log data, the confidence interval pore pressure profile is more consistent with the actual situation, and it can provide significant support for casing program design and mud weight optimization in petroleum drilling.
Wellbore Stability Analysis of Inclined Shale Wells Using a Fully Anisotropic Hydraulic-Mechanical Coupled FEM Model
Authors: Qiu Yi , Ma Tianshou , Peng Nian , Liu Yang , Liu Jinhua 
Published: September 2023

ABSTRACT
Shale rock is typically anisotropic in both elasticity and strength, but traditional wellbore stability models generally assume that shale rock is isotropic or partially anisotropic, and the influence of hydraulic-mechanical coupling is usually ignored, so the effect of arbitrary inclined well path on shale wellbore stability is still not fully understood. Therefore, assuming the shale to be completely anisotropic in both elasticity and strength, a hydraulic-mechanical coupled finite element model was used to investigate the effect of arbitrarily inclined well paths on the time-dependent stability of shale wellbores. The results indicated that the anisotropy of elasticity (nE=nv=2 or nE=nv=0.5) dominates the induced pore pressure and offsets/enhances the isotropic part, resulting in the induced pore pressure in an anisotropic situation being opposite/enhanced to that of the isotropic situation on the 2D cross-sectional plane of the well. As the anisotropy index of the elastic parameters increased, the effective stress increased and was deflected at a certain angle. The effective hoop stress was skewed toward higher stiffness, and the shear failure area gradually decreased. Comparison of the failure zone with different borehole trajectories showed that the influence of the bedding plane decreased when the relative angle between the borehole axis and the bedding normal was small. Therefore, avoiding drilling parallel to bedding planes is conducive to borehole stability in practical drilling.

INTRODUCTION
The commercial success of shale gas in North America has prompted a global interest in the development of unconventional oil and gas resources, including shale oil and gas, tight oil and gas, and coalbed methane (Ma et al. 2015; Soeder 2018; Wu et al. 2020; Nie et al. 2021). Horizontal drilling technology is an efficient method to develop unconventional oil and gas. However, during drilling operations, wellbore instability can lead to a series of time-consuming and costly accidents, such as sticking and burying (Fjar et al. 2008; Zhang 2013; Meier et al. 2015). Among them, 90% of wellbore instability occurs in shale formations because shale is rich in clay minerals and bedding planes, so shale rock has different mechanical properties in different directions, i.e., shale is typically anisotropic (Gholami and Rasoul 2014; Barton and Quadros 2015; Ma et al. 2020). Anisotropy makes the wellbore more prone to collapse and instability. Therefore, it is necessary to better understand the wellbore instability mechanisms in anisotropic formations.
Impact of Geomechanics on Hydrothermal Fluid Pathways in Enhanced Geothermal Systems: A Review
Authors: Ngoma M. C. , Wamba Kenfack A. , Kolawole O. , Cavalcante L. 
Published: September 2023

ABSTRACT
Geothermal resources in low-permeability and medium-to-high temperature reservoirs in sedimentary sequence require hydraulic stimulation. However, hydrothermal fluid migration for geothermal energy use in enhanced geothermal systems (EGS) is dependent on the in-situ flow pathway network created by induced hydraulic fractures. Also, there is still no comprehensive knowledge on the impact of geomechanical alterations on the hydrothermal fluid migration in EGS. This study presents a systematic review of the effects of changes in mechanical properties on the fracture behavior and fracture pathway created for efficient extraction of heat in EGS reservoir. This review will contribute to the state-of-knowledge on the impact of geomechanics on fractomechanical behavior in EGS.

INTRODUCTION
Among several sustainable energy alternatives, geothermal energy has been widely recognized due to its low carbon footprint (Homand-Etienne et al., 1989; Olasolo et al., 2016; Kolawole et al., 2021; Zhang et al., 2021; Asai et al., 2022). However, some high-temperature geothermal resources have low permeability which makes the extraction of heat difficult. Therefore, hydraulic fracturing is used to stimulate low-permeable geo-resources to induce fractures and extract fluid from their reservoirs (Kolawole and Ispas, 2020; Moska et al., 2021). In enhanced geothermal systems (EGS), hydraulic fracturing is adopted as a stimulation technique to induce fractures for improved heat extraction (Olasolo et al., 2016; Gong et al, 2020; Kolawole et al., 2021). In EGS, cold fluid injected through a well in a hot rock becomes a mobile hot fluid and flows through the artificially induced fractures which permits easy extraction of heat from a second interconnected well (production well). The continuous interaction between the cold injected fluids and the hot rocks in EGS can alter the mechanical properties of geothermal reservoirs (especially in EGS) which could affect the efficiency of heat exploitation. Hence, the mechanical properties of geothermal resources at certain conditions are important to better understand the potential implication of geothermal energy extraction over time.
Direct Carbon Dioxide Capture at Atmospheric Conditions via Adsorption Desorption Hysteresis Using Shape-Dependent Prozzolanic Material
Authors: Fakher Sherif , Hassanin Abdulla , Tamer Sara , Eltohamy Mohamed , Abdelaty Bassel , Alsakkaf Aseel , Eldakar Shams 
Published: September 2023

ABSTRACT
One of the main solutions for carbon dioxide (CO2) emissions is carbon capture and storage. Carbon capture technologies, although abundant, are very costly and therefore their application is limited. This research introduces a novel technique for carbon capture that is extremely low in cost and applicable at atmospheric conditions with no pressurization requirements. This method is designed based on the utilization of waste material for sustainability and reduction in environmental impact. The selection of the material was the first step into determining the CO2 storage potential. The material selected was a fly ash produced as a byproduct of clinker manufacturing. The fly ash was then used in three different shapes including powder, cube, and hemi-spherical shape. Following this, the CO2 storage capacity was quantified based on the CO2 adsorption to the material. The shape was one of the most significant findings in this project as changing the shape and size of the fly ash resulted in a significant alteration of the adsorption capacity. The cycles of adsorption and desorption had no significant impact on the fly ash itself which indicated that it does not need to be replaced. This research introduces a small working model for a new design that can assist in carbon capture at ambient conditions.

INTRODUCTION
The carbon capture, utilization, and storage (CCUS) initiative highlighted to importance of reducing greenhouse gas emissions by capturing the CO2 from different sources, utilizing the captured CO2 in different industries, and the storing the excess CO2 in different forms (Fakher, S. et al., 2020; 2021; 2022). Although CCUS is a widely researched topic, there are still some major challenges associated with this topic especially carbon capture. Although many technologies have been introduced for carbon capture, many of which are in pilot stage, the majority of these methods are extremely costly (Fakher, S., 2020). This is the main limitation that has resulted in the low level of global implementation. It is therefore important to find advancements that can reduce the overall cost of carbon capture in order to globalize the CCUS initiative in the near future.