bluuebunny/crossref_metadata_2025_split huggingface dataset:
Risk Assessment of Adverse Outcomes in Symptomatic Patients With Arterial Hypertension and Chronic Heart Failure With Preserved Ejection Fraction Using THE HFA-PEFF Algorithm
Authors: Kobalava Z. D. , Safarova A. F. , Gudieva H. M. , Lukina O. I. 
Published: March 2023

Aim To study the incidence of heart failure (HF) in patients with arterial hypertension (AH), symptoms of HF, and left ventricular ejection fraction (LV EF) ≥50 % using a novel, modified HFA-PEFF diagnostic algorithm and to evaluate the liver hydration status and density depending on the established HF profiles and the prognostic significance of this algorithm.Material and methods This study included 180 patients (median age, 72 years) with AH, symptoms of HF, and LV EF ≥50 %. The incidence of chronic HF with preserved ejection fraction (CHFpEF) was studied with the stepwise, modified HFA-PEFF diagnostic algorithm, and long-term outcomes were assessed at 3, 6, and 12 months of follow-up. The hydration status was determined by a bioimpedance vector analysis, and the liver density was measured by indirect fibroelastometry. The following tests were performed for all patients: standard, general clinical and laboratory examination with evaluation of CH symptoms (including N-terminal pro-brain natriuretic peptide test); extended echocardiography with assessment of structural and functional parameters of the heart; a KCCQ questionnaire was used for evaluation of patients’ condition and quality of life (QoL). Long-term outcomes were studied by phone calls at 3, 6, and 12 months following discharge from the hospital/visit (worsened QoL, repeated hospitalization for cardiovascular causes, cardiovascular death or all-cause death).Results The following profiles were determined by the HFA-PEFF algorithm: with CHFpEF, with intermediate probability of HF, and without HF (58.9, 31.1, and 10 %, respectively). The study showed that patients with CHFpEF compared to patients of the intermediate group and without HF, had higher levels of brain natriuretic peptide, more pronounced signs of congestion according to results of the bioimpedance vector analysis and a higher liver density according to results of indirect fibroelastometry of the liver, which allowed identification of a group of patients with a high probability of CHFpEF. The diagnosis of HF by HFA-PEFF had an adverse prognostic significance with respect of worsened QoL according to the KCCQ questionnaire, and of repeated admission for HF during a year.Conclusion In AH patients with symptoms of HF and LV EF ≥50 %, CHFpEF was detected with the HFA-PEFF algorithm in 58.9 % of cases. Patients with AH and verified CHFpEF had a high incidence of hyperhydration and increased liver density. A diagnosis of CHFpEF by the HFA-PEFF algorithm had an adverse prognostic significance with respect of long-term outcomes.
CONTEMPORARY EDUCATION SYSTEM AND ISLAMIC STATE: REFLECTIONS FROM INDO-PAKISTAN
Authors: Rahman Fazlur , Khan Farid Ullah , Rahman Zuha , Ahmad Waqar 
Published: March 2023

Purpose of the study: This paper will discuss the gaps in the current and Islamic education systems, focusing on Indo-Pakistan. Islamic education aims to bring attitudinal changes and build a value system among humans that should transform society by promoting love, peace, equality, purity, integrity, forgiveness, and justice.
Methodology: This is descriptive research where Islamic education and Contemporary education have been analyzed. Emphasis has been placed on Indo-Pakistan, the Western education system, and the Islamization of education in Pakistan and its future.
Principal Findings: As a state, Pakistan comprises politically, geographically, culturally, linguistically, and educationally diverse people. They cannot trace their origins by calling themselves Arabs or Indians. That conflict is reflected in Pakistan's education system – which has lost its identity to be called either religious or contemporary. The moral and ethical standards to bring any positive behavior change are hardly maintained to groom the graduates in the current education system. The Western education left by the British in the Subcontinent, including Pakistan, has its colonial drawbacks, which need to be addressed.
Application of this study: In Pakistan and other Islamic states, it is essential to instill Islamic values within the current education system. One of the viable solutions that could make the Muslim world, including Pakistan, move forward is to accept modern-day learning practices and introduce a hybrid education system. A system that safeguards Islam's values and principles and has rich content of research and development in various fields carried out by the West, irrespective of religious affiliation. This study would benefit researchers and policymakers in framing such an education system.
The novelty of this study: The paper frames some recommendations to tailor the existing education system according to the Islamic education system.
Effects of Cell phone Use on Study Habits and Academic Performance of Learners
Authors: Sampelo, MAEE Roel C. 
Published: March 2023

The main purpose of this study was to determine the effect of cell phone use on the study habits and academic performance of the Grade 6 and 8 learners. This study utilized a descriptive comparative design of research that examined the extent of cell phone use, study habits and academic performance among the three groups of learners. The following major findings of the study were revealed: All groups got “satisfactory” study habits. Their academic performance, on the other hand, was interpreted as “proficient” with a general weighted average of 85.37.; There is no significant difference between the three groups in terms of their study habits.; However, there exist significant differences between the academic performance of the three groups. With a p-value of 0.013, it was found out that significant differences lie between infrequent users and moderate users as well as infrequent users and frequent users. Based from the conclusions, the following recommendations are hereby formulated: There is a vital need to sensitize learners and educators about the potential academic risks associated with high cell phone use. It is also recommended for teachers to apply a detailed guidance and explanation on how to use cell phones appropriately in classroom settings. Moreover, the school management must be more alive to their responsibilities by ensuring conformity to the school laid down rules and regulations on student’s use of mobile phone device during class session.
Factors predicting transrectal ultrasound-guided systematic prostate biopsy failure
Authors: ÇETİN Serhat , OLGUN Ahmet , BULUT Ender Cem , KOPARAL Murat , BAYRAMLİ Elbay , ŞEN İlker , SÖZEN Sinan 
Published: March 2023

Objectives: To determine the factors that predict the failure of systematic prostate biopsy by examining the clinical, laboratory, and radiological parameters of patients for whom prostate cancer was detected by magnetic resonance imaging (MRI)-targeted biopsy but not by systematic biopsy.
Methods: Patients were included in this study if they had undergone combined targeted and systematic biopsy and had cancer detected in the targeted biopsy. They were biopsy-naive patients and had lesions with a Prostate Imaging Reporting and Data System (PIRADS) score ≥ 3 in the peripheral zone on MRI. The clinical, biochemical, and radiological findings of the groups with and without cancer detected in the systematic biopsy were compared.
Results: A total of 100 patients had an index lesion in the peripheral zone and cancer detected by MRI-targeted biopsy. In 43 (43%) of the patients, no cancer was detected in the systematic biopsy, whereas it was detected in the other 57 (57%). Statistically significant differences were found between the two groups in terms of prostate volume and PSA density (p &lt; 0.001 and p &lt; 0.001, respectively). Moreover, the findings of univariate and multivariate logistic regression analyses indicated that prostate volume and lesion size are independent predictors of systematic biopsy failure.
Conclusions: The success of systematic biopsy may be lower in patients with high prostate volume and low peripheral zone index lesion size.
Gathering and Compiling Mathematical Common Student Errors in e-Assessment Questions with Taxonomical Classification
Authors: Sikurajapathi Indunil , Henderson Karen , Gwynllyw Rhys 
Published: March 2023

This article gives an overview of the interactive book called ‘Collection of Taxonomically Classified Mathematical Common Student Errors in e-Assessments (CSE Book)’ which has been produced as a result of the Common Student Errors Project (CSE Project) set at the University of the West of England, (UWE Bristol). The process of creating this CSE Book is discussed in this article, namely, through the systematic collection and compilation of CSEs, and classification of them taxonomically according to a taxonomy presented in existing literature by examining first year Engineering Mathematics students’ rough answer scripts, and e-Assessment-stored data. We believe that the CSEs presented in the CSE book would be useful for mathematics teachers when providing feedback to students to correct CSEs. Further, institutions can utilise it in the future development of teaching and support resources to ensure that these CSEs will be addressed to help students to acquire better understanding of mathematics. Moreover, mathematics learners can try these questions online by using the respective hyperlinks given in the CSE Book. If any of the identified CSEs are entered in the solution, then enhanced feedback is provided to correct their misconceptions instantly. Currently, the CSE Book is freely available at UWE Bristol’s Repository.
The sigma Accessibility Special Interest Group: Resources Update
Authors: Hand Ruth , Mac an Bhaird Ciarán , Mulligan Peter , O'Malley James , O'Neill Rachel 
Published: March 2023

This article contains a short update on the work of the sigma Accessibility Special Interest Group. We announce the release of resources to assist mathematics tutors and coordinators with the support of mature students and those with dyslexia, dyscalculia and dyspraxia. We provide a brief background to the development of these resources and describe their pilot in two institutions, one in England and the other in Ireland. We close with a description of the next stages of work for the special interest group and a call for additional people to get involved.
The Optimum Cluster Interference Percentage in Multi-Stage Fractured Wells
Authors: Ibrahim Ahmed Farid 
Published: March 2023

Abstract
In a number of shale formations, including the Bakken and Barnet shales, cluster spacing was fixed to 700 feet. In Eagle Ford and DJ Basin, tight cluster spacing was used for cluster spacing of up to 15 feet. This study presents an combined workflow to calculate the percent of interference and its effect on the well performance in addition estimate the acceptable interference percentage that provides the highest well profitability.
Analytical rate transient analysis (RTA) and reservoir numerical simulation were coupled to calculate the ratio of the effective fracture surface area (ACe) for hydrocarbon production to the actual stimulated fracture area (ACa) from the numerical simulation. The percentage of interference was calculated by (1-ACe/ACa). The discounted cash flow analysis was combined to the integrated workflow to estimate the acceptable percentage of interference and the optimum spacing depending on the well's profitability.
This study presents an integrated workflow for quantifying the percentage of cluster interference as a function of spacing. The workflow was integrated with an economic model to estimate the acceptable interference percent in order to maximize the NPV. The higher the stage number and tighter cluster spacing, the higher the cluster interference will be. The acceptable interference percent is a function of formation properties and economic parameters. The acceptable interference percent was found to be 16% in the case of 0.0001md, 2.5$/Mscf. Increasing the formation permeability increases the acceptable interference percent to accelerate production and increase the recovery. As the higher gas price or lower interest rate, tighter spacing is recommended, where, at 8$/Mscf, the NPV was continuously increasing up to the lowest spacing in this study of 20 ft.
Integrating Petrophysical and Geochemical Measurements of Drill Cuttings for Enhanced Formation Evaluation
Authors: Kesserwan Hasan , Jin Guodong , Ma Shouxiang , Alofi Saleh 
Published: March 2023

Abstract
With mud returns, solid cuttings are a by-product of drilling a well. They however provide great opportunities to exam subsurface formations directly. Conventionally, cuttings are mainly used for geological, lithological, mineralogical, and elemental studies of formations penetrated. This paper presents an integrated study of measuring porosity from drill cuttings and integrating cutting porosity with geochemical measurements for enhanced formation evaluation.
In this study, a workflow was developed to conduct formation evaluation through integration of porosity, mineralogy and elemental analysis from drill cuttings. Porosity is determined from measured solid volume using helium gas expansion and pore volume from nuclear magnetic resonance (NMR) measurement. Mineralogical and elemental compositions are determined from X-ray diffraction and fluorescence analyses. All measurements are integrated to extract their relationships among the parameters for enhanced petrophysical evaluation.
Results indicated that there exists a correlation between porosity and elemental composition for the formation studied. Cuttings from different zones have relatively different porosity values, which are consistently associated with the occurrence of certain minerals. The upper and lower bounds of the high porosity zone are observed to be closely related to the ratios of mineral concentrations including calcite, dolomite, anhydrite, quartz, and clays. High clay and low anhydrite contents marked the upper boundary, which also corresponds to a rapid decrease in the ratio of anhydrite to calcite and the increase in the ratio of calcite to dolomite. The lower boundary is marked by the sudden increase in the ratios of dolomite to calcite and anhydrite to calcite. Findings from this study clearly demonstrates the value of integration of petrophysical and geochemical properties measured from cuttings for enhanced formation evaluation.
Case Study: People Development and Rapid Organization Building During Challenging External Environment
Authors: Gupta Robin 
Published: March 2023

Abstract
This paper highlights the successful building of the Subsurface/Modeling Division (SMD) within the ExxonMobil Bengaluru Technology Center (EMBTC) over the last three years in overcoming challenges resulting from a combination of: 1) rapid growth since its inception in 2017; 2) the global pandemic; 3) a young organization with majority staff with limited oil and gas industry experience.
This paper describes the strategies and initiatives adopted to overcome these challenges within the following framework: leadership commitment, people development, capability development, organizational culture and processes. A strong and consistent leadership commitment played a vital role in growing SMD through challenging external environment. On people development standpoint, significant gains were realized through initiatives like "sessions with expert"- a focused, short duration session with company experts, "communication workshops" to improve communication skills, "Innovation Hub" to promote idea generation, focused "mentoring sessions" and a structured program for onboarding new-hires. During the early years, teams were embedded within global teams to ensure smooth knowledge transfer and capability development; strategic areas were identified to develop into potential Centers of Excellence in the future. Experienced technical and managerial staff were impatriated from global teams into the EMBTC Subsurface/Modeling divisions with a clear mandate to increase technical competency, business acumen and leadership skills while onboarding staff onto company culture and assist with capability development. Concurrently, global ExxonMobil subject matter experts (SMEs) were engaged on periodic basis. Experience gaps in teams were addressed through selective external hiring. Sustained engagement with staff was ensured through periodic surveys, informal chats and town halls through the pandemic period and continues to this day. The results of all these efforts has culminated in the EMBTC Subsurface/Modeling division successfully growing at a rapid pace to build a workforce that has developed strong capabilities and work culture while demonstrating its potential to generate significant business value for EM.
Sulfate Ion Removal from Seawater for Hydraulic Fracturing by Barium Sulfate Precipitation
Authors: Hou Jian , AlGhunaimi Fahd , Han Ming , Aljuryyed Norah 
Published: March 2023

Abstract
To face the worldwide shortage of fresh water resources and the increase demand of oil and gas, researchers have devoted to study on application of seawater as a base fluid for hydraulic fracturing. One of the primary challenges for seawater fracturing application is the scale precipitation tendency due to the incompatibility of high sulfate concentration with high calcium, barium or strontium concentration in formation water, which will lead to overall reduction in production capacity. This work aims to develop a chemical precipitation method, which is a low cost way to remove sulfate before injection to solve the scale problem.
Barium chloride dihydrate was used to precipitate sulfate from seawater for hydraulic fracturing. The chemical dosage, working temperature and precipitation time were optimized. The sulfate concentration in treated water was determined using an inductively coupled plasma mass spectrometer (ICP-MS). The sedimentation speed to separate treated water and precipitates at different precipitation time was measured using an optical particle stability analyzer. The obtained precipitates were dried at 60?C, and the morphology was observed using scanning electron microscopy (SEM) and X-ray diffraction method (XRD).
Experimental results showed the barium chloride dihydrate can reduce the sulfate concentration in seawater from more than 4,000 ppm to less than 200 ppm when the dosage barium is higher than 5,500 ppm. The reaction efficiency is not altered in the temperature range from 15ºC to 45ºC. It turned out the treated seawater could meet the requirement for hydraulic fracturing application. As to the separation of water and precipitates using sedimentation method, it showed the highest speed appeared when precipitation time was 5 mins. And the addition of flocculants cannot improve the sedimentation speed. In addition, SEM results showed the size of obtained precipitates was in nanometer range. Besides, XRD confirmed the composition of precipitates were barium sulfate with purity &gt;90%. The characterization results demonstrated the precipitates could be used as additives in drilling fluid, which will greatly reduce the operation cost.
The work has revealed that barium sulfate precipitation method is promising to remove sulfate in seawater for hydraulic fracturing. Besides, the obtained barium sulfate is a commercially valuable product used in drilling fluid. Comparing to nanofiltration methods, this method is low cost and has no energy input requirement, which is suitable for a low carbon economy.
Sustainable Ion-Exchange Resins for Produced Water Treatment
Authors: Baltaeva Madina , Orlov Maxim , Cha Dong Kyu , Ayirala Subhash 
Published: March 2023

Abstract
Produced water is by far the largest by product by volume associated with oil and gas production. To minimize environmental impact of the produced water disposal, reuse produced water, and fulfill the targeted Zero-Liquid-Discharge approach, it is necessary to develop new economically viable technologies for water purification. The objectives of the research enclose development of the sustainable ion-exchange resin from the discarded expanded polystyrene via a multi-stage process with plasma treatment.
The process of sustainable ion-exchange resins’ preparation includes several consecutive steps. At first, a polystyrene waste is collected and dissolved in an organic solvent.After that the polymeric beads are prepared using a microdroplet precipitation mechanism. Then, one part of the polystyrene beads is modified with the green gas-liquid interfacial plasma (GLIP) sulfonation process producing a strong acidic cation exchange resin. The other part is functionalized by amine groups in cyclopropylamine medium producing strong basic anion exchange resin.
Robust and self-sustained process for creating the polystyrene beads was developedusing the «solvent-non-solvent» system. The bead formation process is realized by a controlled, laminar liquid jet broken into equally sized beads by vibrations at optimized frequency value. This process was performed using the in-house state-of-the-art encapsulator instrument. The concentration of waste expanded polystyrene and a filler in a solution was optimized. The size of obtained porous beads was measure around 750-1000 micron and can be controlled by the nozzle size and frequency of vibration.
The research describes a new method of sustainable ion-exchange resin creation. The utilization of this novel material is a beneficial approach to re-use plastic waste and reuse it to clean produced water from dissolved salts. Moreover, plasma technology that is used for polystyrene treatment is probably the most versatile surface treatment technique and, moreover, it is environmentally friendly.
Salvaging Restricted Entry Unconventional Lateral Sections Through the Utilization of Multi Stage Diversion Frac
Authors: Zakary Maram , Alowaid Abdulrahman , Baki Sohrat , Alowaid Abdulaziz 
Published: March 2023

Abstract
The objective of the paper is to introduce a design procedure aimed at targeting the stimulation of unconventional lateral sections that are inaccessible using the conventional plug-and-perf (PnP) method. This salvaging process utilizes the diversion frac technique allowing for the stimulation of challenging lateral sections with minimum well intervention. Consequently, improve stimulation efficiency and minimize intervention costs. When a certain section of the lateral cannot be accessed while running in hole performing PnP operations, an immediate investigation procedure is carried out to determine whether that was due to an equipment failure or a deformed section of the wellbore. If the passage of PnP BHA cannot be rectified, the diversion frac technique presents an ideal solution to stimulate the challenging section salvaging valuable lateral footage. The design for a successful diversion frac is based on multiple variables including the length of the attended lateral section, number of perforating clusters, cluster efficiency, diverter selection and frac design. The restricted section is entirely perforated to minimize the number of well intervention post frac stages. During the stimulation phase, fluid diverters are then pumped to divert fluid flow from clusters taking fluid to the next. Hence, an upward trend in frac treating pressure is noticed with more diverters pumped indicating fluid diversion from existing perforations to new ones. The implementation of the diversion frac technique resulted in salvaging in excess of 1,300 ft of lateral footage per restricted well. Additionally, it is now serving as a salvaging option if restricted sections were encountered in future wells. This process was performed successfully on multiple unconventional wells in Saudi Arabia. Evaluation of this approach was conducted simultaneously with field implementation and hence, modified to reach the optimum design accounting for cluster efficiency, frac design and diverters selection.