bluuebunny/crossref_metadata_2025 huggingface dataset:
Speed Control of Electric Car Using Field Oriented Controlled Switched Reluctance Motor
Authors: Moe Moe , Win Soe
Published: May 2024

Nowadays, global warming caused by carbon emission threatens the lives of human beings and living organisms. The problem of reducing carbon dioxide (CO2) has become urgent. Therefore, in the vehicle world, electric vehicles (EV) are being used instead in order for reducing the fuel consumption. The using of electric motor plays a significant role in the performance of electric cars. In most recent research, the application of switched reluctance motor (SRM) can be seen to improve the performance of electric cars. Thus, this research focuses on the testing the performance of SRM. Among the many benefits of SRM, torque ripple is a drawback. For reducing the torque ripple, the closed-loop vector control is applied to motor control. In this research, field oriented control (FOC) to SRM is used for NEVERA TECH EV car. The scenarios for Speed acceleration, deceleration, and torque change are considered for the performance analysis using MATLAB/Simulink.
Vehicle Lane Assist System
Authors: Singh Vanshika , Tiwari Nikita , Anshari Rayyan , Shaikh Shahnawaz , Kadam Mahesh
Published: May 2024

This research paper presents the development of a fast and reliable lane detection device designed to detect and alert the user for efficient and safe journey .Our lane detection device makes it easier to see lane markings on the road and warns the user when he switches to wrong side of road. This budget friendly device will provide the real time data with the help of sensors and used it for google maps integration. Our device is even flexible foe extreme weather conditions.
Content in the Red Cup: Perceived Implication of Substance Use in Nigeria Hip Hop Music Video Performance
Authors: Sunday Idowu
Published: May 2024

Music is an essential part of mass communication that aids the stimulation of concrete information in a lighter mood. The current trend of cup usage by artist in Nigeria music video performance has presently increased the imitation among the upcoming artist and youth. Substance abuse can be referred to excessive use of psychoactive drugs. This study investigates use of red cup and perceived implication of substance abuse in Nigeria music video performance. The study made use of quantitative research approach. The research design for this study is survey method, questionnaires were used gather data needed for the study. Simple random sampling was adopted to select 200 respondents among students of the department of performing art and film studies and mass communication and media technology Lead City University, Ibadan. The result obtained were analysed and presented in percentage tables. The study found out that most of the red cups found in Nigeria Music Video contain drug substance. The study also revealed that use of substance during performance can lead to drug addiction and other related effects. The study concluded that the content in red cup of Nigeria music videos contain drug substance, this can lead to addiction and immoral imitation that can influence viewers and upcoming artist. The study recommends that artist should reduce the use of red cup as it sends negative signals to the viewers who see them as role model and mentor, also, artist should avoid intake of drugs substance and alcohol during performance in other to retain originality in their music performance.
Relativistic Jet Ejections from Slim Disks
Authors: Inoue Hajime
Published: May 2024

A mechanism for the ejection of relativistic jets from slim disks is studied. Since radiation pressure is dominant in the slim disk, radiative energy flows along the pressure gradient in the vertical direction. The divergence of the radiative flux tells us that the flow of radiative energy from a bottom layer near the equatorial plane is absorbed by another layer above the boundary surface. The absorbed energy accumulates in the upper layer as the matter advances inward, and calculations show that the specific energy of the flow in the upper layer can be as large as ∼c
2 near the black hole when the accretion rate through the upper layer is relatively low. Since the specific energy ∼c
2 is much larger than the gravitational energy, the height of the upper layer could significantly increase then. Hence, the innermost part of the upper layer after almost all the angular momentum has been removed could have a much greater height than the size of the black hole, and the flow could collide with itself around the central axis of the disk, bouncing back from the axis while simultaneously expanding along it. The flow is expected to go outward along the central axis and to become supersonic due to the change in its cross section, finally producing relativistic jets.
Forming Mercury from Excited Initial Conditions
Authors: Scora Jennifer , Valencia Diana , Morbidelli Alessandro , Jacobson Seth
Published: May 2024

Mercury is notoriously difficult to form in Solar System simulations, due to its small mass and iron-rich composition. Smooth particle hydrodynamics simulations of collisions have found that a Mercury-like body could be formed by one or multiple giant impacts, but due to the chaotic nature of collisions, it is difficult to create a scenario where such impacts will take place. Recent work has found more success forming Mercury analogues by adding additional embryos near Mercury’s orbit. In this work, we aim to form Mercury by simulating the formation of the Solar System in the presence of the giant planets Jupiter and Saturn. We test out the effect of an inner disk of embryos added on to the commonly used narrow annulus of initial material. We form Mercury analogues with core-mass fractions (CMFs) > 0.4 in ∼10% of our simulations, and twice that number of Mercury analogues form during the formation process but are unstable and do not last to the end of the simulations. Mercury analogues form at similar rates for both disks with and without an inner component, and most of our Mercury analogues have lower CMFs than that of Mercury, ∼0.7, due to significant accretion of debris material. We suggest that a more in-depth understanding of the fraction of debris mass that is lost to collisional grinding is necessary to understand Mercury’s formation, or some additional mechanism is required to stop this debris from accreting.
The Dependence of Gamma-Ray Burst Jet Collimation on Black Hole Spin
Authors: U. Hurtado Valeria , Lloyd-Ronning Nicole M. , Miller Jonah M.
Published: May 2024

Gamma-ray bursts (GRBs) are the most luminous events in the Universe and are excellent laboratories to study extreme physical phenomena in the cosmos. Despite a long trajectory of progress in understanding these highly energetic events, there are still many observed features that are yet to be fully explained. Observations of the jet opening angle of long gamma-ray bursts (LGRBs) suggest that LGRB jets are narrower for those GRBs at higher redshift. This phenomenon has been explained in the context of collimation by the stellar envelope, with denser (lower metallicity) stars at higher redshifts able to collimate the jet more effectively. However, until now, the dependence of the jet opening angle on the properties of the central engine has not been explored. We investigate the effect of black hole spin on the jet collimation angle for a magnetically launched jet, using the general relativistic radiation magnetohydrodynamical code ν
bhlight. We present 3D results for a range of spin values. The simulations show that higher-spinning black holes tend to create narrower jets. If indeed LGRB progenitors in the early Universe are able to produce black hole central engines with higher spin, this could account for at least some of the observed jet opening angle-redshift correlation.
Discovery of an [O iii] Emission Shell around the X-Ray Binary CI Cam
Authors: Fesen Robert A. , Drechsler Marcel , Martino Nicolas , Sainty Yann
Published: May 2024

We report the serendipitous discovery of a

8
′
×
12
′

emission shell brightest in [O iii] centered on the X-ray binary B[e] star, CI Cameleopardalis (CI Cam). This shell, detected during a survey of optical emission associated with the Galactic supernova remnant G150.3+4.5, is seen outside but immediately adjacent to the remnant’s optical filaments along its northwestern edge. Assuming this shell is related to CI Cam’s strong winds and transient outbursts, the adoption of CI Cam’s Gaia DR3 statistically corrected distance of 4.1

−
0.2

+
0.3

kpc yields shell dimensions ≃9.5 pc × 14.3 pc. While the distance to the G150.3+4.5 remnant is uncertain, the appearance of CI Cam’s emission shell so close to the SNR’s optical filaments appears likely to be a chance coincidence.
Circular economy in Singapore: waste management, food and agriculture, energy, and transportation
Authors: Velasco Erik
Published: May 2024

Singapore, as a small but advanced urban economy, has achieved a high-quality living environment and has become an example of a high-density and sustainable city. To maintain that status, Singapore has set a goal of achieving net zero carbon emissions by mid-century and reducing waste sent to landfills by 30% by 2030. To achieve this goal, the Government has laid out a comprehensive plan for implementing a circular economy model across all economic sectors. It includes a set of measures tailored to its unique city-state conditions that will necessarily require the joint effort of authorities, industry, companies, academia, and citizens. This article reviewed and analyzed the strategies and policies that Singapore has devised to implement such a model in four sectors identified as the highest priority by the Association of Southeast Asian Nations Economic Community: waste management, food and agriculture, energy, and transportation. The analysis aimed to provide information to close the gap between aspirations and reality by identifying factors that allow progress toward planned objectives, as well as externalities and barriers that act in the opposite direction. For this endeavor, a gap analysis was carried out to look into the interconnections between the natural environment, regulatory framework and policies, governance, infrastructure, technology and innovation, and societal habits. In general, the institutional framework necessary for the transition into a resilient and resource-efficient nation is already in place, while enforcement and monitoring mechanisms to assess progress are under construction. Singapore has learned how to develop policies that are flexible and can adapt to technological, economic, and social changes, as well as threats posed by climate change, and unexpected challenges. Still, success will be determined by Singaporeans' ability to change their work-life balance paradigm for their own sake and happiness.
Les formes d’organisation du travail dans les administrations publiques
Authors: Nocenti Brice
Published: May 2024

Comment mesurer la diffusion des modèles organisationnels issus du « nouveau management » dans l’État, les hôpitaux et les collectivités locales ? Cet article mobilise les enquêtes Conditions de travail 2005 à 2019 pour étendre aux administrations publiques les travaux statistiques portant sur les formes d’organisation du travail, habituellement réservés aux entreprises. L’analyse empirique en distingue cinq : l’autonomie du métier, l’autonomie évaluée, le contrôle direct, le lean management et le taylorisme flexible. Les professions organisées du public connaissent une érosion de leur autonomie collective sous l’effet de la diffusion des instruments d’évaluation formalisée tout en demeurant dans des organisations très qualifiantes. Les cadres de l’État et des établissements de santé adoptent largement le modèle du management par objectifs. Les agent·es subalternes des ministères et des hôpitaux publics voient se développer des organisations néotayloriennes très contraignantes. Il apparaît ainsi que les enjeux de la diffusion des techniques de gestion issues des grandes entreprises sont très différents selon la position des agent·es dans les hiérarchies administratives, du fait d’une répartition inégale des marges de manœuvre et des contraintes managériales.
Decolonizing Postgraduate Studies Embracing African Spirituality in South African Higher Education
Authors: Mnguni Joseph Nkosana , Mapotse Tome T. A.
Published: May 2024

This chapter decolonizes postgraduate education by challenging the Eurocentric paradigm in academia. It highlights the importance of indigenous African spirituality in shaping African philosophy, culture, art, and daily life. The chapter advocates for its inclusion in South African higher education institutions, highlighting its potential impact on the inner self, and physical health, and fostering a society that values diversity. It also highlights its potential in healthcare, environmental protection, and social justice.
Transforming Research Methodology
Authors: Fatokun Jonathan Olanrewaju , Gumbo Mishack Thiza
Published: May 2024

This chapter considers a key challenge for postgraduate researchers in the process of data collection, analysis, and interpretation, particularly when conducting research in the Indigenous community. The focus is on the issue of researcher neutrality, which the Western method considers fundamental and significant in making the result of research valid and reliable. The chapter argues that postgraduate researchers should go beyond the traditional Western approach when conducting research with Indigenous participants, without limiting the data to the researchers' research questions, protocols, and guidelines. The power imbalance between the postgraduate researcher and participants should be eliminated, while participants' voices and opinions should be heard and appropriately reported to reflect a decolonized Indigenous research methodology. The chapter noted that there are interjections between the Western methods and the indigenous methods. There is a need to combine the two perspectives where appropriate.
UN Women and UN Global Compact
Authors: Justin Mercia S. M. , Jalagat Revenio , Aquino Perfecto , Ling Lee Wan
Published: May 2024

Achieving UN SDGs is crucial for the people of the world to live complete and satisfying lives. The role of women in achieving the goals cannot be overemphasized. It becomes all the more important with women leaders of international organizations, as women are considered to be zealous and highly committed to the causes they take up. It is important to highlight the women leaders who are working towards the achievement of UN SDGs. The chapter examined the works of UN Women and UN GC women leaders towards achievement of the UN SDGs with support of the data available in the respective websites.
Empowering Change
Authors: Khan Imran Ahmed
Published: May 2024

Many women in leadership roles at corporations spearheaded initiatives focused on environmental, social, governance, and economic sustainability. These efforts resulted in tangible benefits for all stakeholders involved and created an impact for a sustainable future for all. The singular purpose of this chapter is to comprehensively address the core, behavioral, and strategic competencies of selected female leaders in the corporate sector who have immensely contributed to the SDGs through corporate sustainability initiatives. It also focuses on corporate sustainability and gender equity, exploring the role of women's leadership in creating corporate value strategies and connecting business outcomes with Sustainable Development Goals (SDGs).
Artificial Intelligence and Service Marketing Innovation
Authors: R. Monica , Soju Aswin Varghese , B. Sathish Kumar
Published: May 2024

The integration of artificial intelligence (AI) into service marketing in India is expected to significantly impact marketing strategies and economic dynamics. The emphasis on personalization, automation, predictive analytics, and chatbots will enhance customer engagement and brand loyalty, leading to increased sales and revenue. Automation of marketing workflows will streamline operations, improve efficiency, and foster business growth. AI's predictive analytics capabilities will help businesses make informed decisions about their marketing strategies, particularly in a diverse market like India. AI-driven chatbots will enhance customer satisfaction and engagement, contributing to positive brand perception and loyalty. However, there may be concerns about job displacement, particularly in routine tasks. The growth of AI-driven service marketing can contribute to the development of a technology-driven ecosystem in India, attracting investments, fostering entrepreneurship, and stimulating innovation.
Predictive Analysis of Digital Consumer Behaviour
Authors: Pasupulati Rishika , Mahendran Jyeshta , Majumdar Anindita
Published: May 2024

In summary, this proposed research chapter purports to offer a visionary perspective on the future of consumer behaviour prediction. The implication is to inform and inspire researchers, entrepreneurs, and professionals about the evolving role of AI in shaping consumer preferences and behaviour. The power to predict consumer behaviour is inherently tied to the access and analysis of consumer data. Therefore, the driving concern is to strike a delicate balance between technological advancement and ethical considerations. While AI promises remarkable insights and unprecedented capabilities in consumer behaviour prediction, it also brings forth pressing questions about the ethical boundaries of data collection, the transparency of algorithms, and the potential for misuse. In essence, it aims to illuminate the transformative power of AI, underlining the need for responsible data handling and ethical considerations as integral components of consumer behaviour prediction.
Peripheral Odontogenic Myxoma of Zygoma and Orbital Region - A Unique Case Report with Review of Literature
Authors: Nikunj Anand Mohan , Mishra Biswajit , Elangovan Bathri , Rajkhokar Dilpreet
Published: May 2024

Rationale:

Peripheral odontogenic myxoma (POM) is a rare mesenchymal tumour and it is the first case report of POM involving orbital and zygoma region.

Patient Concerns:

A 16-year-old male presented with a painless, slow-growing swelling over his left infratemporal region.

Diagnosis:

The histopathological examination of the tumour was diagnosed as POM.

Treatment:

The patient was treated by surgical removal of tumour under general anaesthesia.

Outcomes:

The patient has been under follow-up for the past 2.5 years and there has been no recurrence.

Take-Away Lessons:

POM is a rare mesenchymal tumour. To our knowledge, this is only the second report of a POM of the infratemporal region and the first report of a myxoma, which extends into the zygomatic region and lateral wall of the orbit.
The pathological function of neutrophils in pemphigoid diseases
Authors: Matsumoto Daisuke , Amatya Beni , Tsuruta Daisuke , Hiroyasu Sho
Published: May 2024

Pemphigoid diseases (PDs) are a group of autoimmune blistering diseases, including bullous pemphigoid, epidermolysis bullosa acquisita, mucous membrane pemphigoid, linear immunoglobulin A disease, and other rare variants. These diseases are characterized by the presence of autoantibodies that target proteins at the dermal-epidermal junction, resulting in the formation of tense blisters and erosions on the skin and/or mucosa. The current therapeutic approaches, such as systemic corticosteroid, are associated with significant adverse effects, highlighting that safer and more effective treatment options are an urgent clinical need. To address this unmet need, a comprehensive understanding of the detailed mechanisms underlying PDs is essential. Based on their histopathological infiltration in pemphigoid lesions, neutrophils have long been implicated as major contributors to the initiation and progression of the diseases. Numerous in vivo and in vitro studies have investigated the role of neutrophils in the pemphigoid pathology, revealing various pathological mechanisms induced by these cells, including the release of neutrophil elastase and matrix metalloproteinase-9, as well as the formation of neutrophil extracellular traps. The present review provides a comprehensive summary and critical evaluation of the current understanding regarding the role of neutrophils in PDs. In addition, it discusses the potential of targeting neutrophil-associated pathways as a novel therapeutic approach for the diseases.
Laparoscopic Posterior Pelvic Exenteration with Radical Vulvectomy for Intestinal-type Vulvar Adenocarcinoma
Authors: Natsume Takashi , Kobayashi-Kato Mayumi , Tanase Yasuhito , Uno Masaya , Yoshida Hiroshi , Moritani Konosuke , Kanemitsu Yukihide , Ishikawa Mitsuya
Published: May 2024

Vulvar intestinal adenocarcinoma is a rare malignancy. The most significant predictor of advanced vulvar cancer is achieving complete resection, although determining the optimal treatment for this rare histologic type remains uncertain. We report the case of a 63-year-old woman with a primary vulvar tumor suspected of having rectal invasion and inguinal lymph node metastases based on preoperative magnetic resonance imaging and computed tomography scans. To achieve complete resection of stage IIIC intestinal-type vulvar adenocarcinoma, we performed a laparoscopic posterior pelvic exenteration (PPE) and radical vulvectomy, along with bilateral inguinal lymph node dissection. This case report highlights the use of a novel hybrid procedure that combines laparoscopic PPE with radical vulvectomy and bilateral inguinal lymph node dissection for vulvar adenocarcinoma of the intestinal type. Laparoscopic PPE can be considered a minimally invasive approach for vulvar tumor when complete resection is achievable with an appropriate safety margin.
Comparison between Calcium Hydroxide with Mineral Trioxide Aggregate and Regenerative Endodontics in Inducing Root Apex Closure during Apexification – A Systematic Review and Meta-analysis
Authors: Gupta Divya , Shaw Amar K. , Mali Sheetal D. , Jadhav Abhijit B.
Published: May 2024

This study aimed to assess better effectiveness between regenerative endodontic procedures (REP) and apexification procedures (AP) with mineral trioxide aggregate (MTA) and calcium hydroxide for inducing root end apex closure. Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines were followed and registered in PROSPERO-CRD42023398997. Electronic databases were searched for studies evaluating effectiveness of REP and AP in terms of survival rate, success rate, increase in root length, root width and decrease in apical diameter. Cochrane risk of bias (RoB) -2 tool was used for quality assesssment using RevMan 5.3. The risk ratio (RR) and standardized mean difference (SMD) was used as summary statistic measure with random effect model (P < 0.05). Nine studies were included in qualitative synthesis and eight studies for meta-analysis. Quality assessment revealed moderate to low risk of bias. The pooled estimate through RR and SMD favoured REP being superior to AP for better survival rate (RR = 1.01 (0.96 – 1.06)), success rate (RR = 1.09 (0.96 – 1.24)), increase in root length (SMD = 0.25 (-0.14 – 0.63)), root width (0.66 (0.22 – 1.10)) and decrease in apical diameter (SMD =0.66 (-0.51 – 1.83)). Funnel plot did not show any heterogeneity indicating absence of publication bias. REP significantly improved apical root end closure. AP are equally effective in forming calcific barrier, however it was concluded that regeneration procedures are comparably superior to apexification procedures with greater outcomes. Clinicians should consider employing the REP in cases when root development is severely deficient and where tooth’s prognosis is hopeless even with an apexification procedure.
Hypervitaminosis D Due to Overdose: A Case Series
Authors: Rastogi Shivani , Agarwal Anurag , Bhandari Raj Laxmi , Bagga Aayushi , Tiwari Brihaspati
Published: May 2024

Vitamin D, a fat-soluble vitamin, is found in many animal products and fortified foods and is endogenously made in the human body. Vitamin D supplementation has become a part of the routine prescription; its continuous intake without any follow-up has led to hypervitaminosis D due to overdosing. Hypercalcemia accompanies hypervitaminosis D, affecting bone health, blood pressure, and kidney function. We studied six cases that landed in hypervitaminosis D due to prolonged intake.
Successful Use of Anticoagulation-free Prolonged Extracorporeal Membrane Oxygenation for Massive Pulmonary Hemorrhage in a Child with Heart Transplant and Mechanical Mitral Valve: A Case Report with Review of Literature
Authors: Anton-Martin Pilar , Sandhu Hitesh , Kramer Jennifer , Beasley Gary , Martinez Hugo , Boston Umar S. , Sathanandam Shyam K. , Agrawal Vijay , Chakraborty Abhishek
Published: May 2024

Background:

Pulmonary hemorrhage is a rare cause of morbidity and mortality in children. Extracorporeal membrane oxygenation (ECMO) can be used as a rescue mode of support in children with life-threatening respiratory failure. However, the dilemma arises as to how to balance anticoagulation to prevent circuit thrombosis while avoiding bleeding complications or worsening hemorrhage.

Clinical Description:

We present an adolescent with a history of Noonan syndrome, orthotopic heart transplant, and mechanic mitral valve that required emergent veno-venous (VV) ECMO support due to life-threatening hypoxia related to severe pulmonary hemorrhage secondary to anticoagulation for his prosthetic mitral valve.

Management and Outcome:

The patient remained on ECMO for 28 days with no anticoagulation and did not receive any anticoagulant or antiplatelet agents postdecannulation for 4 months despite the presence of a mechanical valve. No thrombotic complications to the mechanical valve or the ECMO circuit occurred.

Conclusion:

Prolonged anticoagulation-free VV-ECMO support may be used as a rescue strategy in patients with massive pulmonary hemorrhage resulting in refractory respiratory failure.
Atypical Presentation of Subacute Sclerosing Panencephalitis in a Child
Authors: Hooda Monika , Shokeen Priyanka , Kumar Brijesh , Singhal Bhawna
Published: May 2024

Background:

Subacute sclerosing panencephalitis (SSPE) is a rare complication of measles, which emerges long after the initial infection. The diagnosis of SSPE can be challenging, especially when initial presentation is atypical.

Clinical Description:

A 6-year-old boy, apparently healthy previously, presented with a sudden onset of generalized myoclonic jerks with intact cognitive and scholastic skills. Past history revealed that the child had measles infection at 7 months of age. Clinical examination, including memory and intellect assessment, was normal except for the generalized myoclonus.

Management and Outcome:

Diagnosis of SSPE was confirmed with positive antimeasles antibodies and characteristic pseudoperiodic pattern on electroencephalogram. The child was started on standard treatment as per the existing guidelines. However, the child showed marked deterioration over the next 4 weeks with loss of cognition and intellect, causing hopelessness and grief in the family, leading to their self-withdrawal from further treatment.

Conclusion:

This case report describes the importance of considering SSPE as a potential diagnosis in patients with myoclonic jerks but intact cognitive and intellectual function. Furthermore, the case portrays the progressive deterioration and profound emotional impact on the family of child with this disease.
Moyamoya Syndrome in a Child with Beta-Thalassemia Trait: A Case Report with Review of Literature
Authors: Kumar Narender , Singh Aaradhana , Aggarwal Anju
Published: May 2024

Background:

The association of moyamoya angiopathy with hematological conditions such as sickle cell anemia and beta-thalassemia major or intermedia is well-known, but moyamoya syndrome (MMS) associated with thalassemia trait is hardly reported. We report such a rare association.

Clinical Description:

A 7-year-old boy presented with right-sided monoparesis with right-sided focal seizures, along with right-sided upper motor neuron type facial nerve palsy. He had a history of recurrent transient episodes of limb weakness, which were unevaluated. Examination revealed pallor and mild splenomegaly.

Management and Outcome:

Routine investigations revealed microcytic hypochromic anemia with normal serum iron levels. High-performance liquid chromatography was suggestive of beta-thalassemia trait. Contrast-enhanced computerized tomography of the head showed infarction in the territory of the left anterior cerebral artery (ACA) and middle cerebral artery (MCA). Magnetic resonance angiography revealed significantly attenuated bilateral internal carotid arteries in the supraclinoid region with attenuated bilateral ACA and bilateral MCA along with collateral formation suggestive of moyamoya angiopathy. The final diagnosis of MMS secondary to beta-thalassemia trait was made. The child improved with aspirin and supportive management.

Conclusion:

MMS can be rarely associated with the beta-thalassemia trait. Such an underlying, unsuspected heterozygous beta-thalassemia (trait) may be diagnosed only after the identification of moyamoya disease following a stroke.
Congenital Epulis in a Neonate: A Rare Cause of Oral Cavity Mass
Authors: Kohli Sarvesh , Shridhar G. , Mohan Karthik Ram , Raman Shankar , Rajan A. R. , Adhikari K. M.
Published: May 2024

Background:

Congenital epulis is a benign tumor of the oral cavity, rarely seen in newborns.

Clinical Description:

A term, female neonate presented soon after birth with a 5 cm × 3 cm × 2.5 cm, firm, lobulated, noncompressible, nonfluctuant oral cavity mass, arising from the right maxillary alveolar ridge with a pedunculated base.

Management and Outcome:

The lesion posed an obstacle to the establishment of breastfeeds or paladai feeds along with the potential to compromise the airway for which the mass was excised in toto under general anesthesia. Histopathology revealed a lining of stratified squamous epithelium, large polygonal cells with abundant granular, eosinophilic cytoplasm, and a prominent vascular stroma with no evidence of malignancy suggesting the diagnosis of congenital epulis and immunohistochemistry confirming the same.

Conclusion:

Congenital epulis are rare tumors of the oral cavity which have excellent results if resected early.
Do we always need a pulmonary valve?
Authors: Shukla Madhu , Mohan Jagdish Chander
Published: May 2024

Limited right ventricular (RV) outflow patching with preservation of pulmonary valve function are key therapeutic goals during primary repair of tetralogy of Fallot (TOF). Obligatory severe pulmonary regurgitation (PR) following the repair of tetralogy has variable consequences. This is the story of a 38-year-old young woman (out of several such cases) whom the corresponding author has followed for 37 years after she was operated upon for complete repair of the TOF at 1 year of age. During surgery, her pulmonary valve was completely removed, leaving just a tag of valvar tissue. Despite severe PR, she has enjoyed an unrestricted childhood, got married, had two children, and remains completely symptom-free till date. She has normal RV function and no heart failure. This raises an important philosophical question about the necessity of an intact pulmonary valve for long-term survival.
Percutaneous management of an aberrant left circumflex artery arising from the right sinus of Valsalva, presenting as acute coronary syndrome
Authors: Natarajan Deepak
Published: May 2024

This case report describes a 49-year-old male patient who was admitted with central chest pain at rest. Coronary angiography revealed an aberrant left circumflex coronary artery originating from the right aortic sinus of Valsalva, with 2 critical stenoses proximally and distally. Anomalous origin of the circumflex artery arising from the right sinus of Valsalva is the commonest coronary anomaly. The patient underwent successful percutaneous coronary intervention with stenting of both lesions, with two PTCA guide wires placed in the right coronary and circumflex arteries respectively for stability during the procedure.
Role of computed tomography as a preprocedural evaluation tool in transcatheter aortic valve replacement
Authors: Bhatia Mona , Maity Prasit
Published: May 2024

Transcatheter aortic valve replacement (TAVR) is increasingly becoming the preferred innovative approach for high-risk aortic stenosis patients. However, before undergoing TAVR, it is crucial to undergo a noninvasive and accurate assessment for proper valve sizing and planning the access route. Computed tomography (CT) imaging plays a vital role in evaluating patients scheduled for transcatheter aortic valve implantation (TAVR). It offers comprehensive information about the aortic valve complex anatomy and the preferred access route, ensuring effective patient selection, and guiding the selection of the appropriate prosthesis. In addition, CT imaging aids in determining the fluoroscopic projection angle, leading to reduced procedural time and optimized use of contrast and radiation exposure.
Bilateral multiple recurrent branch retinal vein occlusions secondary to hypercoagulopathy associated with multiple mutations: A rare case report
Authors: Altıntaş Ayşe Gül , Ekici Eren
Published: May 2024

Retinal vein occlusions (RVOs) are relatively common vascular disorders, often resulting in significant visual impairment. We present an intriguing case of a 53-year-old male with recurrent bilateral branch RVOs stemming from underlying hypercoagulopathy. This complex scenario encompassed simultaneous bilateral RVO occurrences and subsequent unilateral recurrences. Despite the absence of systemic comorbidities or conventional risk factors, genetic assessment unveiled notable heterozygous mutations involving Factor V Leiden (G1691A) and Factor II (PT G20210A), along with a homozygous methylenetetrahydrofolate reductase A1298C mutation. While routine hematological indicators remained largely unremarkable, the marked efficacy of anti-vascular endothelial growth factor (anti-VEGF) agents, particularly when administered promptly, emerged as a noteworthy therapeutic avenue. This case underscores the imperative of scrutinizing thrombotic mutations in youthful patients with recurrent RVOs, accentuating the favorable retinal response to anti-VEGF interventions and emphasizing the rewards of timely clinical intervention.
A Self-Supervised GCN Model for Link Scheduling in Downlink NOMA Networks
Authors: Zhang Caiya , Fang Fang , Zhang Congsong
Published: May 2024

INTRODUCTION: Downlink Non-Orthogonal Multiple Access (NOMA) networks pose challenges in optimizing power allocation efficiency due to their complex design.OBJECTIVES: This paper aims to propose a novel scheme utilizing Graph Neural Networks to address the optimization challenges in downlink NOMA networks.METHODS: We transform the optimization problem into an optimal link scheduling problem by modeling the network as a bipartite graph. Leveraging Graph Convolutional Networks, we employ self-supervised learning to learn the optimal link scheduling strategy.RESULTS: Simulation results showcase a significant enhancement in power allocation efficiency in downlink NOMA networks, evidenced by notable improvements in both average accuracy and generalization ability. CONCLUSION: Our proposed scheme demonstrates promising potential in substantially augmenting power allocation efficiency within downlink NOMA networks, offering a promising avenue for further research and application in wireless communications.
Построение многомерных изоспектрально-неизоспектральных интегрируемых иерархий, связанных с новым классом
петлевых алгебр многомерных вектор-столбцов
Authors: Wang Haifeng , Zhang Yufeng
Published: May 2024

Построен новый класс петлевых алгебр многомерных вектор-столбцов. На их основе предложен метод получения изоспектрально-неизоспектральных многомерных интегрируемых иерархий. В качестве приложения выведена обобщенная неизоспектральная интегрируемая иерархия Шредингера, которую можно свести к знаменитому нелинейному уравнению Шредингера с производной, а также получена расширенная изоспектрально-неизоспектральная интегрируемая иерархия Шредингера, которая в частных случаях сводится к разнообразным классическим и новым уравнениям, таким как расширенная неизоспектральная система уравнений Шредингера с производной, уравнение теплопроводности и уравнение Фоккера-Планка, имеющее широкий спектр приложений в стохастических динамических системах. Также выведена неизоспектральная интегрируемая $Z_N^\varepsilon$-иерархия Шредингера, и этот результат показывает, что представленный подход можно распространить на произвольную размерность системы. Кроме того, для рассмотренных иерархий обсуждаются гамильтоновы структуры, которые получаются из квадратичного следового тождества.
Рождение частиц в космологическом пространстве-времени изменяющимся во времени электрическим полем
Authors: Rezki Hadjer , Zaim Slimane
Published: May 2024

Квазиклассический подход применяется для решения уравнений Клейна-Гордона и Дирака в присутствии изменяющегося во времени электрического поля. Цель исследования - вычислить концентрацию рожденных частиц в космологическом анизотропном пространстве-времени Бьянки I. Показано, что если электрическое взаимодействие пропорционально скаляру Риччи искривленного пространства-времени, то распределение частиц при наличии электрического поля соответствует тепловому состоянию.
Teneurs en coumarines du fourrage de Khaya senegalensis (Desr.) A. Juss. en fonction de sa provenance au Burkina Faso
Authors: Ghankoba Maligbeti , Soulama Sibiri , Karama Issa , Kiendrebeogo Martin
Published: May 2024

Le fourrage de Khaya senegalensis (Desr.) A. Juss. csontribue à l’alimentation du bétail au Burkina Faso. Toutefois, il y a peu d’études sur  ses métabolites secondaires aux effets à controverse. Le travail a consisté à déterminer les teneurs en coumarines du fourrage de Khaya  senegalensis selon sa provenance. A cet effet, des feuilles matures et des jeunes rameaux ont été collectés de dix pieds dont cinq à  Dionouna (site 1) et cinq au parc Bangr-weogo (site 2). Les méthodes standard ont servi à la caractérisation des coumarines dans ces  organes et à leur localisation dans les feuilles. Le dosage des coumarines a été faite par spectrométrie. Les coumarines ont été détectées  dans les feuilles et dans les rameaux puis localisées principalement dans les parenchymes cortical et médullaire de la foliole. Les teneurs  en coumarines des feuilles et des rameaux du site 1 ont été comprises entre 19,25 ± 4,85 et 44,60 ± 12,83 µg EC/100 mg. Celles du site 2  ont varié entre16,45 ± 11,17 à 27,99 ± 11,27 µg EC/100 mg. Elles étaient toutes statistiquement similaires indépendamment de l’origine  des échantillons. Cependant, ces teneurs élevées de coumarines dans le fourrage de K. senegalensis constituent une limite à sa   distribution exclusive aux ruminants.
 
English title: Coumarin content of Khaya senegalensis (Desr.) A. Juss. depending on its origin in Burkina Faso
Khaya senegalensis (Desr.) A. Juss. fodder contributes to livestock feed in Burkina Faso. However, thereare few studies on its secondary metabolites with controversial effects. The work consisted in determining the  coumarin content of Khaya senegalensis fodder according  to its origin. To this end, mature leaves and young twigs were collected from  ten feet, including five at Dionouna (site 1) and five at  Bangr-weogo park (site 2). Standard methods were used for the characterization of coumarins in these organs and their localization in  the leaves. The dosage of coumarins was made by spectrometry. Coumarins were detected in the leaves and in the twigs and then  localized mainly in the cortical and medullary parenchyma of the leaflet. The coumarin contents of the leaves and twigs of site 1 were  between 19.25 ± 4.85 and 44.60 ± 12.83 µg EC/100 mg. Those of site 2 varied between 16.45 ± 11.17 to 27.99 ± 11.27 µg EC/100 mg. They  were all statistically similar regardless of the origin of the samples. However, these high levels of coumarins in the forage of K.  senegalensis constitute a limit to its exclusive distribution to ruminants.
Model for Calculating Stress Intensity Factors for an Inclined Crack at the Leading Edge of a Gas Turbine Engine Blade Under the Influence of Centrifugal Forces
Authors: Andrianov Ivan K. , Chepurnova Elena K.
Published: May 2024

The study is devoted to the issue of the destruction of a body with an inclined crack during rotation. A mathematical model for calculating stress intensity factors in a rectangular plate with an inclined crack under the influence of centrifugal tensile forces during rotation around an axis lying in the plane of the plate is constructed in the article. Based on the equations of the theory of elasticity and the principles of brittle fracture mechanics, relationships were obtained that relate the stress intensity factors of type I and II, the rotation speed and geometry of the plate, as well as the parameters of the crack: length, angle of inclination to the axis of rotation, distance from the axis of rotation to the crack. The complexity of the study is because the plate in question with an inclined crack is under the action of mass forces. Therefore, the values of the effective stresses are not the same along the crack edge. Accordingly, stress intensity factors will depend on the location of the crack relative to the axis of rotation. The influence of the crack location and plate rotation speed on the change in stress intensity factor values is analyzed based on the results obtained. As the distance from the axis of rotation to the crack increases, the values of the stress intensity factors decrease. As the plate rotation frequency increases, the stress intensity coefficients increase according to a parabolic law. The results of the study can be used to assess the limit state of the rotating blades of a gas turbine engine in the presence of an inclined crack. The mathematical model can find practical application for assessing the critical speed regime of blade rotation in the presence of cracks of various lengths and angles of inclination to the rotation axis.
Discalculia e Atividade Colaborativa na Formação de Professores: considerações a partir de um levantamento bibliográfico
Authors: Quincozes Porto Eliane , Sebastião Barbosa Bemme Luis , Maria Aguiar Isaia Silvia
Published: May 2024

Neste trabalho, por meio de uma revisão bibliográfica, buscamos analisar as pesquisas referentes à discalculia e à atividade colaborativa na formação de professores. Para isso, realizou-se um mapeamento de teses e de dissertações na Biblioteca Digital de Teses e Dissertações (BDTD), nos programas de Pós-Graduação de Ensino e Educação Matemática brasileiros e no Portal Scientific Eletronic Library Online (SciELO Brasil), compreendidos no recorte entre 2010 e 2020, utilizando os descritores “atividade colaborativa” e “discalculia na formação". Escolheu-se utilizar o filtro “título” para a posterior leitura e análise dos resumos dos trabalhos que produziram dois eixos: "atividade colaborativa na formação de professores" e "saberes específicos de discalculia". Os resultados demonstraram que, apesar das investigações apresentarem aspectos importantes da formação de professores, da discalculia e sobre a aprendizagem docente em atividade colaborativa, não há o entrelaçamento desses conceitos nas pesquisas identificadas, o que gera algumas lacunas e diferentes entendimentos a partir de nosso objetivo de busca.
Constelação Familiar como técnica complementar para a qualidade de vida do portador de doença inflamatória intestinal
Authors: Galindo da Rocha Jane Cleide , Jakubaszko Daniela
Published: May 2024

Objetivo: Este artigo apresenta os resultados de uma pesquisa que buscou avaliar se o atendimento com a terapia de Constelação Familiar Sistêmica pode provocar melhoras na percepção da qualidade de vida do portador de Doença Inflamatória Intestinal (DII). Métodos: Trata-se de um estudo qualitativo, de caráter exploratório, aprovado pelo CEP USCS (5.638.053), em que a constelação familiar foi aplicada em cinco portadores de DII que responderam aos questionários da Escala de modo de enfrentamento de problemas (EMEP) e o Instrumento de Qualidade de Vida WHOQOL-bref, dias antes e vinte dias depois da aplicação da constelação. Resultados: Os resultados mostraram, além de aumento nas pontuações para qualidade de vida, relatos de percepção da melhora em diversos aspectos nos modos de enfretamento da doença e do tratamento. Conclusões: As PICS se apresentam como inovação estratégica na melhoria da qualidade de vida. A DII é a ocorrência crônica de episódios de inflamações sérias do trato gastrointestinal, que resulta em redução da qualidade de vida e surgimento de dificuldades relacionadas a aspectos psicológicos e sociais. Observamos que a aplicação da técnica de forma complementar ao tratamento do portador de DII pode ser um apoio valioso que merece mais estudos, com amostras maiores de participantes.
NATURAL AND ARTIFICIAL INTELLIGENCE IN BONE MARROW TRANSPLANTATION AND CELL THERAPY
Authors: Duarte Barroso Fernando , Hamerschlak Nelson Hamerschlak
Published: May 2024

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THE ROLE OF URBAN PLANS IN SOCIAL HOUSING PROVISION IN SERBIA
Authors:   Geographical Institute ", Vuksanović-Macura Zlata ,   Jovan Cvijić",   of the Serbian Academy of Sciences and Arts: Belgrade, RS, Jevtić Aleksandar ,   JP Zavod za urbanizam Vojvodine, Serbia
Published: May 2024

In this paper, we investigate the role of urban planning in providing social housing in Serbia. Social housing is essential in providing affordable and sustainable housing options for low-income individuals and families. In recent years, the issue of social housing has gained traction as cities around the world face rising housing prices and a growing number of individuals experiencing homelessness. Urban planning encompasses the design and development of cities and communities to create environments that are functional, sustainable, and conducive to quality of life. Through land use regulations, transportation planning, and infrastructure development, urban planning aims at creating neighborhoods that are well-connected, economically viable, and socially inclusive. Furthermore, the position of social housing within urban plans is critical in ensuring access to essential services and amenities. This paper explores the intersection between planning and construction laws and the contemporary notion of social housing. By analyzing the general plans of the major cities Belgrade, Kragujevac, Novi Sad, and Niš, we investigate the extent to which urban planning has influenced the provision of social housing in Serbia over the past twenty years.
Consideraciones para evitar el plagio en la publicación de resultados de investigación
Authors: López Toribio Roe Mio , Castañeda Eugenio Nancy Elizabeth
Published: May 2024

El plagio en el mundo de la investigación es una falta contra los principios éticos fundamentales de las actividades científicas. Este editorial contribuye a la información de los lectores, autores e investigadores sobre el fundamento de la erudición. La información sobre la perpetración, los constituyentes y las consecuencias del plagio se proporciona a través de las ramificaciones legales del robo, el engaño y la mala conducta profesional.
El editorial describe un cambio en la perspectiva sobre la desviación de los estándares éticos y las consideraciones para la prevención del plagio. En otros términos, es posible evitar el plagio.