bluuebunny/crossref_metadata_2025_split huggingface dataset:
Empyema Secondary a Septic Embolus in a Patient with Septic Cavernous Sinus Thrombosis: A Case Report and Review of the Literature
Authors: Silva Aguilar Jesús Alexey 
Published: October 2024

Background: Septic cavernous sinus thrombosis (SCST) is an unusual and life-threatening condition that can develop as a result of infectious or noninfectious conditions. (1) There are very few reports of septic pulmonary embolism secondary to a septic cavernous sinus thrombosis. Case presentation: Here we describe the case of a 31-year-old female who was immunocompromised secondary to the intake of methylprednisolone, chronic pansinusitis was stablished and she developed, fever, left-sided headache, facial pain, eyelid swelling, and proptosis with ophthalmoplegia in her left eye, loss of the visual acuity. CT revealed cavernous sinus thrombosis with indirect data. Blood, sinus and pleural cultures isolated Streptococcus pneumoniae. Chest CT revealed a right multiloculated empyema and a cavitated nodule that corresponds to an infectious process, of note the presence of multiple nodules scattered among both lungs, suggestive of septic pulmonary emboli. Multidisciplinary strategy was implemented and after discharge the patient is under surveillance with adequate recovery Conclusion: We report this peculiar case that shows the importance of multidisciplinary approach for the management of this rare entity. We have noticed all type of scenarios and the base of this is a prompt diagnosis and avoid possible complications in order prevent serious and permanent sequalae.
Magnetic Field Effects on Second-Grade Non-Newtonian Ferrofluids Flow Over Stretching Surfaces
Authors: Hussain Dilawar , Arain Muhammad Bilal 
Published: October 2024

The current article aims to investigate how the flow of ferromagnetic non-Newtonian fluid is affected by elastic deformation when an external magnetic field is present on a stretching sheet. To achieve this target, we have converted the governing Partial Differential Equations (PDEs) into Ordinary Differential Equations (ODEs) by using suitable similarity transformations. The role of pertinent flow parameters like second-grade fluid parameters, the coefficient of elastic deformation, Prandtl number, and viscoelastic parameters on velocity, pressure, and temperature profiles are drawn pictorially and discussed in detail. Computations for skin friction number and local Nusselt number are also discussed graphically. Some highlights of the findings in terms of the influences of different parameters on velocity, temperature, and pressure profiles are given, and concluded that by raising the values of the second-grade parameter (K) and Ferrohydrodynamic interaction parameter (β) the velocity profiles raise. The velocity profile decreases by increasing the value of the Prandtl number Pr. Increasing the Prandtl number results in a significant decrease in temperature profiles. Also, the pressure increases with higher values of β and Pr. The findings from this research could be utilized in the development of advanced cooling systems for electronics, as well as optimization of processing magnetic materials in which better efficiency and quality of products can be reached by controlling the flow of ferromagnetic fluid under magnetic fields.
غياب الطلبة المتكرر عن المدرسة وأثره على التحصيل الدراسي لدى عينة من الطالبات
Authors: ربيع آيات 
Published: October 2024

هدفت الدراسة إلى التعرف إلى أثر غياب الطلاب المتكرر عن المدرسة على التحصيل الدراسي، واستخدمت الباحثة المنهج الوصفي التحليلي، وكانت أداة الدراسة استبانة صممت لهذا الغرض تكونت من 56 فقرة، وتكونت عينة الدراسة من عينة عشوائية مكونه من (100) طالبة من المرحلة الأساسية والثانوية، وتم تدعيم الإستمارة ببعض المقابلات مع بعض الطالبات وأولياء الأمور ومديرة المدرسة والمرشدة التربوية، والاعتماد على سجلات حضور وغياب الطالبات وسجلات المرشدة وملفات مربية الصف، ومن أهم نتائج الدراسة أن أهم الأسباب المؤدية إلى انتشار ظاهرة غياب الطالبات هي تصرفات بعض المعلمات، ويليها في المرتبة الثانية عوامل مرتبطة بالمنهاج الدراسي وأوصت الدراسة مربيات الصفوف بعدم إجهاد الطالبة بأنشطة بدنية ، وملاحظة أي أعراض ، وإخبار الطبيب .
تصور مقترح لتحقيق القيادة الإبداعية لدى القيادات الجامعية في ضوء الاتجاهات المعاصرة
Authors: العزيبي ليلى 
Published: October 2024

هدفت الدراسة الوقوف على أهم المعوقات التي تحول دون تطبيق نمط القيادة الإبداعية في الجامعات، والتعرف إلى البيئة الإدارية الملائمة للقيادة الإبداعية في ضوء الاتجاهات المعاصرة، وكذلك التعرف على مهارات القيادة الإبداعية اللازمة لبناء قيادات جامعية إبداعية. وفي ضوء ذلك تقدم الدراسة تصور مقترح لتفعيل القيادة الإبداعية لدى القيادات الجامعية في ضوء الاتجاهات المعاصرة.
وللإجابة عن أسئلة الدراسة؛ استخدمت الباحثة المنهج التحليلي التطويري، إذ استخدمت المنهج الوصفي التحليلي من خلال الوصف الشامل للظاهرة وتحليل المعلومات ذات الصلة بموضوع الدراسة. والمنهج التطويري من خلال تقديم تصور مقترح لتفعيل القيادة الإبداعية لدى القيادات الجامعية في ضوء الاتجاهات المعاصرة.
وقد توصلت الدراسة إلى وضع الأطر التنظيمية اللازمة لتصور مقترح لتفعيل القيادة الإبداعية لدى القيادات الجامعية، كونها مؤسسة تعليمية وتربوية حاضنة للإبداع والابتكار الذي بدوره يُسهم في التنمية المجتمعية وتحقيق الأهداف المنشودة.
وفي حدود نتائج الدراسة قدمت الباحثة مجموعة من التوصيات أهمها تبني التصور المقترح للقيادات الجامعية التي تسعى لتحسين مخرجاتها لمواجهة المتطلبات المتغيرة لسوق العمل.
Association between triglyceride glycemic index and ejection fraction preserved heart failure in hypertensive patients
Authors: Shan Xue-Feng , Yang Long , Gao Xiao-Ming 
Published: October 2024

Background
The triglyceride-glucose (TyG) index is regarded as an independent predictor of cardiovascular disease consequences and a reliable surrogate measure of insulin resistance (IR). However, the correlation analysis between triglyceride glucose index and heart failure with preserved ejection fraction in patients with essential hypertension remains unknown.

Methods
A single-center, retrospective study was conducted with patients diagnosed with essential hypertension at the First Affiliated Hospital of Xinjiang Medical University, from December 2018 to September 2020. Participants were selected based on specific inclusion and exclusion criteria, with their clinical data and laboratory tests collected. The study employed Spearman’s correlation analysis, logistic regression models, restricted cubic spline plots, and receiver operating characteristic (ROC) curves to investigate the relationships between the TyG index and HFpEF.

Results
Out of 1,602 enrolled hypertensive patients, 992 were included in the analysis after applying exclusion criteria. Patients were categorized into tertiles based on the TyG index, which showed that patients in the highest tertile had characteristics associated with a higher risk of HFpEF, including age, body mass index (BMI), systolic blood pressure (SBP), N-terminal pro-B-type natriuretic peptide (NT-proBNP), and left ventricular mass index (LVMI). A significant, independent association between the TyG index and HFpEF was confirmed, with an odds ratio (OR) of 5.127 (95% CI [3.894–6.856]). Furthermore, an S-shaped nonlinear relationship was observed between the TyG index and the incidence of HFpEF (nonlinear p < 0.001). TyG index (AUC: 0.824, 95% CI [0.795–0.854]), NT-proBNP (AUC: 0.840, 95% CI [0.816–0.864]), and LVMI (AUC: 0.847, 95% CI [0.820–0.875]) showed good predictive ability for HFpEF. In addition, the TyG+LVMI combination demonstrated the strongest predictive ability (AUC: 0.907, 95% CI [0.887–0.927]).

Conclusion
The study underscores a significant association between IR, as indicated by the TyG index, and the development of HFpEF in hypertensive patients. It highlights the critical role of metabolic dysfunction in the pathophysiology of HFpEF, advocating for a broader perspective on cardiovascular risk management.
Viabilidade Físico-Química de Resíduos de Madeireiras Para Uso Agrícola na Amazônia
Authors: Serra Odilon da Silva , Santos Maria Karoline Pereira dos , Silva Melry Steffany dos Santos , Valente Bruna Sayuri Fujiyama , Pacheco Adriano Bicioni , Antunes Arlindo Modesto 
Published: October 2024

A pesquisa analisou a condutividade elétrica (CE), sólidos totais dissolvidos (STD), salinidade (SALT) e pH em resíduos de serragens com diferentes períodos de deposição em uma madeireira, com o objetivo de avaliar seu uso potencial na agricultura amazônica. Foram coletadas amostras de resíduos após 3 meses, 2 anos, 3 anos e 10 anos de deposição, além de solo da região e uma mistura solo/resíduo na proporção 1:2. Após a preparação das amostras, incluindo peneiramento e preparação para infiltração, as mesmas, foram mantidas a 25ºC por 24 horas para a coleta e avaliação do extrato de saturação. A análise estatística revelou diferenças significativas (1%) entre as variáveis estudadas, destacando que os períodos de 10 anos e 3 meses mostraram os melhores resultados em todas as análises. Os tratamentos de 2 anos, 3 anos, a mistura solo/resíduo e o solo não apresentaram diferenças estatísticas significativas entre si.
Distribution Pattern of Keratinophilic Fungi in Different Ecological Conditions: A Review
Authors: Rathore Poonam , Bhadauria Seema 
Published: October 2024

Keratin, an insoluble protein with numerous disulphide bonds is highly resistant to proteases and serves as one of the major defiant pollutants. The keratinophilic fungi are known to use keratinous substances such as skin, hair, nail, fur and feather for their growth and survival. The biodegradation of keratin by microbes provides a medium to remove environmental contamination and is even considered as substitute to physical and chemical treatments. The keratinolytic potential of these fungi play an important role in decomposition of keratin. The present review highlights the role of various ecological factors on the distribution pattern of keratinophilic fungi. Also, the effect of various biotic and abiotic factors on their growth is discussed. Among biotic factors growth is largely dependent on the presence of humans, birds, animals and abiotic factors include temperature, pH, humidity, organic matter in soil. Further, the potential keratinous substrates such as hairs, feathers, pellets are also described. Study of keratinophilic fungi is important as they have application in industrial sector. Further, isolation of keratinases is also helpful in pharmaceutical and leather industry. Biotechnological uses of these fungi help in cleaning the environmental waste. This review may help as a guide to use the keratinases at industrial level that is to extend the laboratory research to industrial level.
Comparative Performance Analysis of PID and Sliding Mode Controllers in Speed Control of Induction Motor Drives with Intermittent Loading
Authors: Etim Isemin Stephen , Umoette Anyanime Tim , Ukommi Ubong S. 
Published: October 2024

Induction motor (IM) is the most used AC machine, and it is a constant speed device. If induction motion must be used in variable speed applications, its speed must be controlled. Speed control of a squirrel cage induction motor (SCIM) using a control algorithm with proportional integral derivative (PID) and sliding mode controller (SMC) was designed, simulated, and analyzed in this paper. Three-phase SCIM was considered, MATLAB software was used for both design and simulation and decoupling of the flux and torque-producing components for separate control was done for the actual control of the SCIM drive. The motor drive was used in driving a constant load of 0% (0 Nm), 28% (4 Nm), and 62% (12 Nm) of the rated torque with a variable speed of 0 rad/s, 10 rad/s, and 25 rad/s. It is observed that SMC gave the best speed performance compared to other controllers. The steady-state error, rise time, settling time, and overshoot of the SMC model were 0.1%, 0.01 sec, 0.05 sec, and 4%, respectively while that if PID were respectively 2 %, 0.02 sec, 0.2 sec, and 16 %, when driving 4Nm under intermittent speed. The improved speed performance of the proposed SM controller can be used in robotics where high precision speed performance is required.
Testing nowcasts of the ionospheric convection from the expanding and contracting polar cap model
Authors: Walach M.‐T. , Milan S. E. , Yeoman T. K. , Hubert B. A. , Hairston M. R. 
Published: April 2017

AbstractThe expanding/contracting polar cap (ECPC) model, or the time‐dependent Dungey cycle, provides a theoretical framework for understanding solar wind‐magnetosphere‐ionosphere coupling. The ECPC describes the relationship between magnetopause reconnection and substorm growth phase, magnetotail reconnection and substorm expansion phase, associated changes in auroral morphology, and ionospheric convective motions. Despite the many successes of the model, there has yet to be a rigorous test of the predictions or nowcasts made regarding ionospheric convection, which remains a final hurdle for the validation of the ECPC. In this study we undertake a comparison of ionospheric convection, as measured in situ by ion drift meters on board DMSP (Defense Meteorological Satellite Program) satellites and from the ground by SuperDARN (Super Dual Auroral Radar Network), with motions nowcasted by a theoretical model. The model is coupled to measurements of changes in the size of the polar cap made using global auroral imagery from the IMAGE FUV (Imager for Magnetopause to Aurora Global Exploration Far Ultraviolet) instrument, as well as the dayside reconnection rate, estimated using the OMNI data set. The results show that we can largely nowcast the magnitudes of ionospheric convection flows using the context of our understanding of magnetic reconnection at the magnetopause and in the magnetotail.
Down to Earth With an Electric Hazard From Space
Authors: Love Jeffrey J. , Bedrosian Paul A. , Schultz Adam 
Published: April 2017

AbstractIn reaching across traditional disciplinary boundaries, solid‐Earth geophysicists and space physicists are forging new collaborations to map magnetic‐storm hazards for electric‐power grids. Future progress in evaluation storm time geoelectric hazards will come primarily through monitoring, surveys, and modeling of related data.
Risk of Allergic Conditions in Children Born to Women With Systemic Lupus Erythematosus
Authors: Couture Julie , Ben‐Shoshan Moshe , Pineau Christian A. , Scott Susan , Clarke Ann E. , Bernatsky Sasha , Vinet Evelyne 
Published: April 2017

ObjectiveLimited evidence suggests a potentially increased risk of allergic conditions in offspring born to women with systemic lupus erythematosus (SLE). In a large population‐based study, we aimed to determine if children born to mothers with SLE have an increased risk of allergic conditions compared to children born to mothers without SLE.MethodsUsing the Offspring of SLE Mothers Registry, we identified children born live to mothers with SLE and their matched controls, and ascertained the number of allergic conditions (asthma, allergic rhinitis, eczema, urticaria, angioedema, and anaphylaxis) based on ≥1 hospitalization or ≥1 or 2 physician(s) visit(s) with a relevant diagnostic code. We adjusted for maternal age, education, race/ethnicity, obstetrics complications, calendar year of birth, sex of the child, and maternal medication.ResultsThere were 509 women with SLE who had 719 children, while 5,824 matched controls had 8,493 children. The mean ± SD followup period was 9.1 ± 5.8 years. Compared to controls, more children born to mothers with SLE had evidence of allergic conditions (43.9% [95% confidence interval (95% CI) 40.4–47.6] versus 38.1% [95% CI 37.0–39.1]). In multivariate analysis (n = 9,212), children born to mothers with SLE had an increased risk of allergic conditions versus control children (odds ratio 1.35 [95% CI 1.13–1.61]).ConclusionCompared to children from the general population, children born to women with SLE may have an increased risk of allergic conditions. Genetics, shared environmental exposures, as well as in utero exposure to maternal autoantibodies and cytokines may mediate this increased risk.
Isoprene (co)polymers with glycidyl methacrylate via bimolecular and unimolecular nitroxide mediated radical polymerization
Authors: Contreras‐López David , Albores‐Velasco Martha , Saldívar‐Guerra Enrique 
Published: April 2017

ABSTRACTHomo and copolymerization of isoprene with small amounts (1–10 wt %) of glycidyl methacrylate (GMA) are conducted using controlled‐living radical polymerization mediated by nitroxides at 120 °C and 1170 kPa in solution with toluene (30 wt % solids). N‐tert‐butyl‐N‐(2‐methyl‐1‐phenylpropyl)‐O‐(1‐phenylethyl) hydroxylamine is successfully used as a control agent (unimolecular process) although other controllers are also tested (TIPNO and OH‐TEMPO in a bimolecular process using BPO as initiator). Chain extension experiments demonstrate the livingness of the synthesized materials. Several additives (acetic anhydride, camphorsulfonic acid and glucose) prove effective in accelerating the reactions. All the successful polymerizations result in first‐order kinetics with respect to the monomer, yielding average molecular weights (Mn) of about 75% compared to the theoretical Mn (Mn, theo) with dispersities (Ð) ranging from 1.2 to 1.7 depending on the agent used for control. Controlled grafts of poly(isoprene‐co‐GMA) are also attached to polyisoprene via nitroxide chemistry. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45108.
Assessment of presentation patterns, clinical severity, and sensorial mechanism of tip‐toe behavior in severe ASD subjects with intellectual disability: A cohort observational study
Authors: Valagussa Giulio , Trentin Luca , Balatti Valeria , Grossi Enzo 
Published: April 2017

Lay AbstractWe assessed presentation patterns and characteristics of tip‐toe behavior (TTB), more commonly known as toe walking, in a cohort of severe autism spectrum disorder (ASD) subjects with intellectual disability in two studies. The first study included 69 consecutive ASD subjects (57 males, mean age = 14 years—3.7 SD) under observation at our institute. A therapist assessed the presence of TTB during standing, walking, and running through direct observation and an interview with the subjects main caregiver. The prevalence of TTB was 32%. We found three clinical presentation patterns of TTB: (1) present when standing, walking and running (45.5%), (2) present when walking and running (18.4%), or (3) present only when running (36.4%). TTB subjects were more frequently nonverbal than those without TTB (72.7% vs. 44.6%‐P = 0.03). On the other hand, no significant difference in ASD severity according to the ADOS scale was found between TTB and non‐TTB subjects. In the second study, carried out in a subgroup of 14 ASD subjects (7 TTB and 7 non‐TTB), we evidenced that a soft floor surface (foam mats) made a substantial difference in reducing the TTB phenomenon. TTB is frequently present in ASD individuals and may occur in three mutually exclusive modalities, which ultimately defines what is commonly known as toe walking. The presence of TTB seems correlated to the severity of language delay. Foot contact on soft surfaces reduces TTB both during static and/or dynamic tasks. Further evaluation is needed to clarify the potential pathophysiological implications of this phenomenon. Autism Res 2017, 10: 1547–1557. © 2017 International Society for Autism Research, Wiley Periodicals, Inc.
The fibroblast surface markers FAP, anti‐fibroblast, and FSP are expressed by cells of epithelial origin and may be altered during epithelial‐to‐mesenchymal transition
Authors: Kahounová Zuzana , Kurfürstová Daniela , Bouchal Jan , Kharaishvili Gvantsa , Navrátil Jiří , Remšík Ján , Šimečková Šárka , Študent Vladimír , Kozubík Alois , Souček Karel 
Published: April 2017

AbstractThe identification of fibroblasts and cancer‐associated fibroblasts from human cancer tissue using surface markers is difficult, especially because the markers used currently are usually not expressed solely by fibroblasts, and the identification of fibroblast‐specific surface molecules is still under investigation. It was aimed to compare three commercially available antibodies in the detection of different surface epitopes of fibroblasts (anti‐fibroblast, fibroblast activation protein α, and fibroblast surface protein). The specificity of their expression, employing fibroblast cell lines and tumor‐derived fibroblasts from breast and prostate tissues was investigated. Both the established fibroblast cell line HFF‐1 and ex vivo primary fibroblasts isolated from breast and prostate cancer tissues expressed the tested surface markers to different degrees. Surprisingly, those markers were expressed also by permanent cell lines of epithelial origin, both benign and cancer‐derived (breast‐cell lines MCF 10A, HMLE and prostate‐cell lines BPH‐1, DU 145, and PC‐3). The expression of fibroblast activation protein α increased on the surface of previously described models of epithelial cells undergoing epithelial‐to‐mesenchymal transition in response to treatment with TGF‐β1. To prove the co‐expression of the fibroblast markers on cells of epithelial origin, we used freshly dissociated human prostate and breast cancer tissues. The results confirmed the co‐expression of anti‐fibroblast and fibroblast surface protein on CD31/CD45‐negative/EpCAM‐positive epithelial cells. In summary, our data support the findings that the tested fibroblast markers are not fibroblast specific and may be expressed also by cells of epithelial origin (e.g., cells undergoing EMT). Therefore, the expression of these markers should be interpreted with caution, and the combination of several epitopes for both positive (anti‐fibroblast or fibroblast activation protein α) and negative (EpCAM) identification of fibroblasts from breast and prostate tumor tissues is advised. © 2017 International Society for Advancement of Cytometry
Performance of a single‐duct portable propane air conditioning system under different refrigerant charge levels
Authors: Siang Jeri Tangalajuk , Sharifian Ahmad 
Published: April 2017

AbstractThe effects of the refrigerant charge on the performance of a portable propane air conditioning system have been evaluated and compared to nonportable systems in which the surrounding temperatures of the evaporator and condenser are not equal. This study aims to determine the similarities and differences in the performance of the two types of propane air conditioners under different charge levels, and to serve as a source of reference for future designs of portable air conditioners. The refrigerant charge was changed from −12.3% to +30% of its normal charge at several room temperatures ranging from 20 °C to 35 °C. The performance parameters include the refrigerant temperature, mass flow rate, maximum velocity of refrigerant, maximum pressure, cooling capacity, compressor work, specific cooling capacity, and coefficient of performance of the system. It has been found that an increase in charge level was found to increase the cooling capacity, coefficient of performance, and maximum velocity of refrigerant in the system while decreasing specific cooling capacity. The increase in the charge caused a relatively insignificant rise in the maximum pressure of the system and useful work of the compressor.
HOW COST EFFECTIVE IS YOUR V & V?
Authors: Pickard Andrew C. , Nolan Andy J. 
Published: April 2017

ABSTRACTThere are many reasons for verification and validation (V&V) including their use to mature a product and reduce the overall development costs. However, there are many V&V approaches that can be applied, from review through modeling, analysis and testing. How effective are these at finding issues with the product? How cost effective are they? Does it matter when the approaches are performed, or in what sequence? This paper examines the V&V approaches applied during the development of gas turbine engine control and monitoring systems. How cost effective are they? In some cases, it is a requirement of the certification process that certain verification approaches are used – but if an approach is not cost effective, would you also use it during development of the product?