bluuebunny/crossref_metadata_2025_split huggingface dataset:
Physiological Response to Speed Endurance Soccer Training in Amateur Players
Authors: Kusuma I Dewa Made Aryananda Wijaya , Kusnanik Nining Widyah , Pramono Bayu Agung , Pranoto Adi , Phanpheng Yanyong , Nurpratiwi Resti , Bawono Mokhamad Nur , Nurhayati Faridha 
Published: October 2024

Objectives. This study aimed to examine the physiological response to speed endurance soccer training (SEST), which involved the measurement of heart rate (HR), blood lactate (LAC), and blood pressure (BP) are measured during the four-week intervention period.
Materials and methods. The one-group pretest-posttest pre-experimental design was used in this study. The study comprised 15 male amateur soccer players with an average age of 16.13 ± 0.52 years. The participants’ mean height was 167.4 ± 4.63 cm, weight was 57.69 ± 12.11 kg, and BMI was 20.44 ± 3.45 kg/m². The data findings are presented using the mean and standard deviation. The paired t-test was employed to assess the impact of each group. The threshold for statistical significance was set at a p-value of less than 0.05. The effect size (ES) was calculated using Cohen’s ES as a metric to quantify the magnitude of the difference between the pretest and posttest stages.
Results. The HR results monitoring during the intervention period were in the high-intensity zone, with an average of 91.67 ± 0.6 % and a HR of 187.67 ± 1.24 bpm. No significant change was observed in the heart rate response from baseline to end of intervention. The LAC results showed that the lactate level was in the high category, namely an average of 11.03 ± 1.3 mmol∙L-1. BP indicated a significant difference between pretest and posttest (p ≤ 0.05). The systolic blood pressure (SBP) demonstrated an increase of Δ % = 0.95, while the diastolic blood pressure (DBP) showed an increase of Δ % = 1.39.
Conclusions. The findings of this study indicate that SEST has a notable effect on the body’s physiological functions, namely on the cardiovascular system, anaerobic metabolism, and blood pressure. This effect was observed over a period of four weeks in amateur soccer players.
Study of the level of (TNF-?), oxidative stress and some biochemical parameters in patients with hypothyroidism in the city of samarra
Authors: Jassim Adwa Fezaa , Abd Qaisar Mashan 
Published: October 2024

: Hypothyroidism is the insufficient production of thyroid hormone to satisfy the body's metabolic needs. Untreated hypothyroidism may lead to hypertension, lipid problems, infertility, cognitive impairment, and neuromuscular dysfunction. Hypothyroidism may arise due to insufficient thyroid stimulation from the hypothalamus or pituitary gland. The research included obtaining(76) blood serum samples, consisting of (50) samples from individuals with hypothyroidism and (26) samples from healthy individuals serving as the control group. The samples were gathered from outpatient clinics in the city of Samarra between September( 2023) and January (2024). The participants' ages spanned from( 30 – 55) years in order to assess the levels of tumor necrosis factor (TNF-ɑ), hormones (T3), (T4), and (TSH), as well as measure superoxide dismutase (SOD), glutathione (GSH), and malondialdehyde (MDA). Additionally, the insulin levels were measured in both the hypothyroid patient group and the control group. The findings demonstrated a noteworthy elevation in the probability level (P ≤0.05) of TNF-ɑ, TSH, MDA, and Insulin, as well as a substantial reduction at the probability level (P ≤0.05) of T3, T4, SOD, and GSH in the patient group as compared to the control group.
Infected Primary Bone Mantle Cell Lymphoma with Multiple Vertebral Involvement
Authors: Bougossa Rebeh , Larbi Fatma , Mabrouk Asma Ben , Jomaa Olfa , Chelli Jihene 
Published: October 2024

Primary vertebral lymphoma is an exceedingly rare entity. We hereby report a case of a 67-year-old male who presented to our department with fever, weight loss, and progressively worsening lower back pain radiating to the right hip. Physical examination showed pain on percussion of the dorsal and lumbar spine and tenderness on palpation of the right upper thigh area. The radiographic findings revealed numerous vertebral lesions with a right psoas abscess extending to the right upper thigh. Intravenous antibiotic therapy was initiated and the patient underwent an incision and drainage of the psoas abscess with a favourable outcome. However, given the suspicious imaging findings of the osseous lesions suggestive of malignancy, a vertebral biopsy was performed and yielded histo-pathological findings consistent with bone mantle cell lymphoma. To the best of our knowledge, this is the first case of an infected primary bone mantle cell lymphoma with multiple vertebral involvement. The diagnosis is challenging and can be confused with other diseases.
Coagulation disorders in myocardial infarction with nonobstructive coronary arteries
Authors: Pisaryuk A. S. , Filkova A. A. , Tukhsanboev E. S. , Svidelskaya G. S. , Ignatova A. A. , Ponomarenko E. A. , Martyanov A. A. , Tarakanova A. A. , Meray I. A. , Panteleev M. A. , Sveshnikova A. N. , Kobalava Z. D. 
Published: October 2024

Aim. To investigate the state of the platelet and plasma components of hemostasis in patients with myocardial infarction with non-obstructive coronary arteries (MINOCA).Material and methods. The study included 42 patients with non-ST-segment elevation myocardial infarction (NSTEMI): MINOCA (n=24) and MI-CAD (n=18). Platelet aggregation ability in response to activation was evaluated using Solar AP2110 and LASCA aggregometers. Platelet functional activity and calcium signaling were assessed using flow cytometry methods. The plasma component of hemostasis, in addition to routine coagulation tests was evaluated using the global coagulation test "Thrombodynamics". The control groups for tests consisted of healthy volunteers.Results. When analyzing the ability of platelets to form aggregates by the aggregometry tests, it was found that platelets in the MINOCA group formed aggregates significantly worse upon ADP stimulation at various concentrations compared to the MI-CAD group. However, when platelets were stimulated with collagen, the opposite effect was observed: in the MI-CAD group, there was a noticeable decrease in aggregate formation in terms of light scattering amplitude compared to the MINOCA group. Flow cytometry using the functional platelet activity test protocol revealed that both groups showed a significantly increased platelet size after activation, reduced platelet granularity) both at rest and upon activation, significantly decreased number of procoagulant phosphatidylserine-positive platelets, and reduced dense granule release upon activation compared to healthy volunteers. The calcium signaling test showed a weakened calcium release in response to ADP in the MINOCA group compared to the MI-CAD group. In the study of the plasma component, no significant differences between the groups or deviations were found according to both routine tests and the "Thrombodynamics" test.Conclusion. Platelet activity did not differ significantly between the MINOCA and MI-CAD groups; however, in the MINOCA group, platelet activity was lower in some tests compared to the MI-CAD group. In the study of the plasma hemostasis component, normocoagulation was recorded in both groups.
A Novel Method and Correlation for Measuring and Evaluating the Diffusion Coefficients of Gases in Liquids
Authors: Ibeh S. , Jaeger P. 
Published: October 2024

Abstract
Knowledge of the diffusion coefficient of fluid systems is essential for designing and optimizing enhanced oil recovery, fluid separation, and storage processes. In this study, the diffusion coefficients of the gases (CO2 and CH4) in liquids, n-hexadecane, 1-butyl-3-methylimidazolium hexafluorophosphate [BMIM][PF6], and tri-ethylene glycol (TEG) were determined using a newly developed correlation. The correlation was derived by adjusting Fick's equation to the experimental data on liquid droplet diameter obtained from pendant drop tensiometry. It also takes into account the vapour-liquid equilibrium of the liquid-gas system. The experiments were conducted at temperatures ranging from 20°C to 50°C and pressures up to 200 bar in a high-pressure, high-temperature view cell. The diffusion coefficient of the fluid systems increases at higher temperatures and pressures. However, a higher diffusion coefficient, greater than 10-9 m2/s, is determined under relatively lower temperature 30°C, and high pressure (P &gt; 70 bar) conditions in a miscible system, as in the case of the n-hexadecane-CO2 system. The diffusion coefficient values obtained in this work agree with the published data for comparable fluid systems, taking values in the order of magnitude of 10-10 to 10-9 m2/s. However, the results from the Cui et al. (2023) correlation were found to be lower, especially at moderate to low pressures (P ≤ 50 bar), with this work addressing this discrepancy. Additionally, CO2 miscibility with n-hexadecane and the resulting 5.3% greater swelling of the liquid droplets at 30°C and 50 bar compared to CH4 at the same conditions make application of CO2 for enhanced oil recovery favorable. The greater swelling of the ionic liquid [BMIM][PF6] compared to TEG by CO2 under the same temperature and pressure conditions demonstrates increased solubility of CO2 in [BMIM][PF6]. Thus, [BMIM][PF6] has a greater capacity to absorb CO2, making it more effective than TEG in CO2 capture.
Numerical Modelling for Forecasting the Efficacy of Horizontal Wells Equipped with Autonomous Inflow Control Devices
Authors: Mohamed Abdalla , El-Fakharany Taher , Khalid Samir , Mohamed Mustafa , Hegab Hesham 
Published: October 2024

Abstract
The Gulf of Suez Basin contains a lot of fields, most of these fields are suffering from water encroachment. The increasing water cut is posing a major challenge in optimizing the oil production rate. One increasingly popular approach is to use flow control devices (FCD's) that delay water and gas breakthrough into the well. It equalizes the inflow between well bore and completion by providing an extra pressure drop. These Flow control devices can be divided into inflow control devices (ICD's) and Autonomous inflow control devices (AICD's). The thesis describes the first model used in flow control devices for Gulf of Suez wells and the first such technique in Egypt and compare this mode of prediction data with the actual data for horizontal wells already completed and produced from long time back suffered from water breakthrough. The study applied on homogeneous formation with horizontal wells in addition to heterogeneous formation with horizontal wells to evaluate the effects of flow control strategies and technologies on the oil recovery factor of horizontal oil wells with an underlying aquifer using the numerical models. The results reveal that employing of Autonomous inflow control devices (AICD's) allows to produce more oil when compared with using ICD's. According to the findings in two cases, for horizontal wells, production with AICD increased overall oil recovery by roughly 25% when compared to an open hole completion, whereas production with ICD increased the overall oil recovery by around 20% when compared to an open hole completion. The study shows using FCD completion will save more cost through more oil gain and will save also operating cost by reducing the well intervention ways in the well future life. The modelling shows that FCD completion will save around 70 MM $ in horizontal wells. The thesis approved that it is time for Gulf of Suez wells to deploy AICD completion to minimize the operating wells cost.
Flare Recovery Successful Case Study
Authors: Gaber Mohamed Kamal 
Published: October 2024

Abstract
As 60% of electric power is produced of natural gas, capturing flared gas could cover 5% of Egypt's energy needs and add 300 million USD $ to national economy, the introduced solution of flared gas recovery skid is able to recover a flared gas up to 4 Million Standard Cubic Feet Per Day (MMSCFD) against an estimated cost of Million One Hundred And Ten Thousands And Eight Hundred Eighty Eight Million United States American Dollars (USD$) as a fixed cost and existing asset on site to put an end to the bleeding running cost of 1.1 Million United States American Dollars (USD$) / year for power generation in addition to the cost of gas flaring. Moreover producing and saving total electrical power of approximately 10.6 Mega Watt (MW) for the existing sire facilities in addition to reduce the environmental harm impacts of flared gas through cutting the CO2 emissions of more than 27 thousands bounds per hour (lb/hr.) matching with the Climate Change Conference that took place in Sharm El-Sheikh, Egypt (COP 27) and also Climate Change Conference (COP 28) that took place in United Arb Emirates.
Surface Hydration Inhibition Mechanism of Sodium Bentonite Clay of Polyamine Treatment Agents Under High Temperature
Authors: Kiiza Justine , Xu Jiafang , Nangendo Jaqueline , Matamba Musungayi Georges , Damulira Moses , Chen Jie , Wang Xiaohui , Camara Moussa 
Published: October 2024

Abstract
Na-bentonite is one of the most used water-based drilling mud additives due to its unique features for better well integrity. As a hydrophilic clay mineral, it is bound to hydration expansion altering drilling fluids’ properties and causing well instability. Small polyamine treatment agents are often used to avert the hydration of clay minerals, which can minimize the dangers of reservoir damage and wellbore instability. Revealing their inhibition mechanisms is vital for evaluating and designing inhibitor molecules by understanding their molecular behaviour at the sodium montmorillonite (Na-Mnt)–water interface. Herein, the inhibition mechanism of alkyl polyamines of different chain lengths, C5, C7, C12, and C18 was investigated using molecular dynamics (MD) simulation with a particular emphasis on the layering behaviour of alkyl chains, and effects of molecular chain length and temperature on adsorption and hydration inhibition ability. It was observed that the alkyl polyamine formed flat-lying conformation structures along the O-atoms while the amine groups were located mainly over the six-member rings, and the alkyl chains formed monolayers with carbon-chain lengths of C5, bilayers from C7 and C12, and trimolecular layers in C18. The amine groups interacted with the Mnt surface through H-bonds, electrostatic and van der Waals forces, forming organoclays thus reducing interlayer particle mobility as their mobility compared to alkyl chains was slightly less mobile. The distributions of polyamines reduced the amount of layer charge, and C7 gave better inhibition results at 2.553 wt.%. Furthermore, the inhibition stability of C7-diamine on the Mnt surface decreased with increasing temperature. A thorough investigation shows that increasing temperature can lead to desorption, which weakens the interaction between C7-diamine and Mnt, thus reducing adsorption, bonding and inhibition stability. The insights from our present study are beneficial for evaluating the inhibitory performances of organoclays and for the selection and molecular design of new bentonite inhibitors in drilling muds.
Innovative Techniques for Efficient Wireline String Retrieval from Oil and Gas Well Rat Holes
Authors: Sallam Abdalla M. , Selim Ahmed , Ashraf Ali , Maghraby Ahmed , Khalil Ahmed , Kotb Mohamed , Tarek Mahmoud , Hosny Mario 
Published: October 2024

Abstract
In the realm of oil and gas extraction, various well intervention techniques such as slickline, braided line, e-line, and coiled tubing are extensively utilized to maintain and optimize well productivity. Despite their widespread application, these techniques can encounter significant operational challenges. One such challenge is the accidental cutting of the wire at the top of the string, resulting in the string dropping into the rat hole. The difficulty of this situation is exacerbated when the outer diameter (OD) of the dropped string is smaller than the minimum restriction in the completion assembly. The rat hole, an extension of the wellbore below the completion tubing, is typically supported by casing sizes of 7 inches and 5 inches. Retrieving a lost string from a 7-inch casing presents a substantial challenge, particularly when using conventional pulling tools. These tools must have an OD not exceeding 2.55 inches to navigate through completion nipples, yet they often lack the capability to securely engage and retrieve objects from larger casing diameters. This paper introduces an innovative solution: a newly designed pulling tool equipped with an expandable skirt. This tool is engineered to overcome the aforementioned limitations by dynamically adjusting its OD, thereby facilitating the efficient retrieval of lost strings from the rat hole. The expandable skirt mechanism allows the tool to engage objects securely, ensuring successful retrieval operations. The development and deployment of this advanced tool not only enhance the efficiency of well intervention operations but also significantly contribute to maintaining well integrity. By addressing the critical issue of retrieving lost strings in challenging wellbore conditions, this tool extends the operational life of wells and reduces non-productive time. The paper provides a comprehensive overview of the design, functionality, and field application of this tool, demonstrating its potential to revolutionize well intervention practices in the oil and gas industry.
NEAG JG Surprising Results and their Effects on Hydrocarbon Potentiality and Prospects Ranking (Case Study: Lower Cretaceous Bahariya Reservoirs in NEAG JG Field, Abu-Gharadig Basin, Western Desert)
Authors: Salama H. , Mahmoud H. , Sherweid S. , Darwish M. 
Published: October 2024

This case study from Bahariya reservoirs in Neag JG serves as a valuable learning lesson for hydrocarbon explorations in any field affected by erosional unconformity surfaces. The objective of this study is to show the new results found by the authors on the top of lower Bahariya reservoirs in Neag JG, knowing that Neag JG is highly affected by the upper cretaceous uplifting and erosion phases of the Syrian arc system.
The area of interest includes two wells penetrated good quality lower Bahariya reservoirs. Well 1X (NEAG JG J2-1), situated in a down-dip structure, encountered two hydrocarbon bearing intervals within lower Bahariya separated by an intra-formational seal, Conversely, well 2X (NEAG JG C5-1), drilled in a distinct structure shallower than Well 1X, yielded water. A comprehensive analysis incorporating the tectonic and stratigraphic activities happened on the top of Lower Bahariya reservoirs and their potential effects were conducted through high-resolution geological, geophysical, and petrophysical methodologies to elucidate the discrepancy: why well 1X exhibited hydrocarbon presence while well 2X did not.
The results were a little bit surprising and interesting, as detailed geological investigations revealed that Well 2X, which yielded water, encountered approximately 100 meters of unfamiliar log responses above the reservoir when compared to all offset wells in Neag-5, JG, and JD fields. This anomalous section is interpreted as comprising slumped materials eroded and transported from adjacent higher elevations, subsequently deposited atop the erosional unconformity surface. This process was responsible for decreasing the top seal quality of the lower Bahariya reservoirs in the up-dip structure. Substantiating this interpretation, bio-stratigraphic analyses conducted on both wells, alongside its identification in seismic sections, provided corroborative evidence.
Following the findings of this study, the top seal emerges as the primary risk factor and must be thoroughly evaluated during the prospect assessment within similar fields encountering erosional unconformity surfaces and affected by the Syrian-Arc system.
Unlocking the Untapped Hydrocarbon Potenial of the Darduma Member as an Unconventional Reservoir in the Obayied Field, Western Desert, Egypt
Authors: Taha Ahmed , Mostafa Alaa Abu 
Published: October 2024

Active exploration efforts are required to replace the produced reserves to guarantee future income and maintain production quotas. This approach can be achieved by exploring new blocks or by drill deeper in old developing blocks to explore new levels (e.g. Paleozoic) or by exploring unconventional reservoirs. The world exploration trends now are towards unconventional reservoirs due to its long production history, but we have few if no mature trials in this trend. The objective of this work is to assess the prospectivity of Darduma limestone because it is thought to offer opportunity to delineate new reserves.
The Obaiyed field (Fig. 1) is one of the largest gas producing fields in the Western Desert. It is located on one of Western Terraces of Matruh Basin. The field is mainly producing from the Jurassic Lower Safa Reservoir in addition to some thin sands within the Upper Safa Member. The Cumulative Production from Gas is 942,310 MMscf. and from Condensate is 57,930,000 bbl.
Darduma Member is the lowermost part of Masajid Formation, which consists mainly of limestone with minor shale streaks. It underlain by Zahra Member of Khatatba Formation (Fig. 2). It is have nearly constant thickness with average thickness of about 100m.
Harsh Environmental Effects on Low Density Fly Ash Proppants
Authors: Haydar Raz , Fakher Sherif 
Published: October 2024

Abstract
Proppants are essential components in hydraulic fracturing for reservoir stimulation, ensuring that fractures maintain conductivity. In high-pressure or harsh environments, high-strength, durable proppants are typically used. However, these proppants are expensive and require costly fracture fluids. This research focuses on developing a new type of proppant that is ultra lightweight, durabile, resistant to corrosion and erosion, and economical. Fly ash, a by-product of various combustion processes, particularly from coal plants, was used to create this new proppant. Fly ash-based proppant formulated is durable, environmentally friendly, buoyant, and cost-effective. To develop the fly ash-based proppant, an alkaline solution was used as an activator and binder. The proppant samples were tested under high temperature and pressure, as well as in acidic, alkaline, saline, and crude oil environments to evaluate their durability. Density was also assessed to determine the buoyancy of the proppant, which affects the fracturing fluid selection. The mix designs included weight ratios of 20%, 22%, and 25% binder, with a fixed 25% water content in all mix designs. After environmental testing, the B20W25 mix design demonstrated satisfactory results across all tests, showing minor erosion and deterioration. Conversely, the B25W25 mix did not withstand the more aggressive environmental conditions and had lower-than-required compressive strength. The density of the three mix designs ranged from 1.33 to 1.35 g/cm3, being categorized as ultra lightweight proppants, making them lighter than sand and thus highly buoyant.