bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cerebellar Liponeurocytoma: A Rare Fatty Tumor and its Literature Review
Authors: Deora Harsh , Prabhuraj A. R. , Saini Jitender , Yasha T. C. , Arimappamagan Arivazhagan 
Published: March 2019

ABSTRACTCerebellar liponeurocytoma is a rare oncological entity, and the knowledge about the treatment and outcome of these rare tumors is still evolving. Very few cases have been described in literature. We report a middle-aged male who presented with raised intracranial pressure features and gait ataxia. His imaging features revealed classical features of liponeurocytoma in cerebellar vermis, with abundant fat component evident in both computed tomography and magnetic resonance imaging. He underwent resection of the lesion and has been asymptomatic for 4 years. This report describes the classical radiological and immunohistochemical features of this rare entity with favorable outcome and reviews the existing literature.
Spinal Cord Ependymoma – Surgical Management and Outcome
Authors: Mohammed Wail , Farrell Michael , Bolger Ciaran 
Published: March 2019

ABSTRACT
Background: Ependymoma is a common primary neoplasm of the spinal cord and filum terminale. Patients with spinal ependymoma usually experience gradual symptoms due to slow progression of the tumor; thus, early diagnosis can be challenging to make. Objective: The objective of this study was to report 5 years’ experience in treating spinal intramedullary ependymomas and to illustrate the advantage of aggressive complete resection whenever possible. Patients and Methods: Retrospective medical notes of all patients with spinal ependymoma treated surgically over a 5-year period between January 2003 and January 2008 were recorded. Clinical presentation, spinal level, extent of resection, and complications were recorded. A prolonged follow-up was documented. Results: There were 20 patients – 11 males, and nine females –included in this study. Their median age was 48 years (range 3–75 years). In 18 patients, total gross resection was achieved. Subtotal resection was only possible in one patient due to surgical difficulty. One patient underwent biopsy and referred for further surgery and subsequently had total resection. Conclusions: Radical total resection is achievable in spinal ependymomas, with minimal resultant morbidity.
Study of Frontal Alpha Asymmetry in Mild Depression: A Potential Biomarker or Not?
Authors: Dharmadhikari Ambrish S. , Jaiswal Suyog Vijay , Tandle Avinash L. , Sinha Deoraj , Jog Nandini 
Published: March 2019

ABSTRACTBackground: Depression, despite being the most common of mental illness lacks any quantifiable and absolute biomarker. Frontal alpha asymmetry (FAA) is proposed as biomarker of depression both in resting and activated state. Yet, the location of extraction of alpha, clinical utility as well as validity of FAA is uncertain. With aim of obtaining clarity on this confusion we conducted this study. Methodology: Electroencephalographic frontal alpha power was calculated in patients of depression (n = 24) and compared with healthy controls (n = 17) for the assessment of FAA. Both groups were studied for resting phase and activation phase changes in FAA. For activation phase, auditory stimuli in the form of Indian classical music were used. Results: Frontal alpha power was measured across FP1, FP2, F3, F4, F7, and F8. Mean powers were compared in resting (before), activated (during) and postactivated resting stage (after). FAA was statistically significant in F7–F8 pair of electrodes and on F7 electrode when compared between cases and controls. Conclusion: Quest for biomarker for depression churned out FAA as frontrunner. Despite of vast amount of research on it, practical utility eludes us. We need to revisit our approach from conventional search of the diagnostic biomarker; as FAA might reflect component of depression but not totally disorder. In our opinion, we are not yet ready for it and have a road ahead to travel.
Tuberculosis: A Common Infection with Rare Presentation, Isolated Sellar Tuberculoma with Panhypopituitarism
Authors: Agrawal Vivek Mahesh , Giri Pramod Janardhan 
Published: March 2019

ABSTRACTIsolated sellar tuberculoma is a very rare condition and usually presents with headache and decreased vision. It can present with panhypopituitarism with 3rd nerve palsy. Tuberculoma mimics pituitary adenoma clinically as well as radiologically and requires endoscopic transsphenoidal surgery and histopathological examination for the final diagnosis. We present a rare case of a 40-year-old female presented with headache, decreased vision, and unilateral 3rd nerve palsy with panhypopituitarism.
Clinical Characteristics of Essential Tremor in South India: A Hospital-Based Cohort Study
Authors: Manorenj Sandhya , Shravani Chintha , Jawalker Srikant 
Published: March 2019

ABSTRACT
Introduction: Essential tremor (ET) is the most common adult movement disorder. Classic ET is characterized by action tremor of hands (95% cases), and tremor involving other regions is less common. Recent studies have revealed a few patients exhibiting nontremor features that include cognitive disorders, tandem gait abnormality, mood fluctuations, olfactory abnormality, hearing impairment, and sleep disorders. Very few studies on ET have so far been conducted in India, and the present study is a pioneering attempt to evaluate the clinical characteristics of patients diagnosed with ET. Materials and Methods: A standardized assessment protocol was used to collect data. Diagnosis of ET was established using consensus criteria established by the Movement Disorder Society. Tremor Research Group Essential Tremor Rating Assessment Scale was used to evaluate tremor impact. The severity of hand tremor was assessed by Glass Scale, and cognitive function was assessed by Mini–Mental Status Examination. Results: Out of the 45 patients enrolled, 73.3% were male and 26.6% were female, with a mean age of 44 ± 15 years. Postural tremor was observed in all, followed by intention tremor in 9 and rest tremor in 6 patients. Tremor of the hand was identified to be most predominant (100%). Voice tremor was observed in 15 (33.3%) patients and head tremor in 12 patients (26.6%) who were all females. Leg tremor was observed in 12 patients (26.6% of patients) and tongue tremor in 6 (13%) patients. Baseline asymmetry of tremor was observed in 60% of patients and positive family history in 35% of patients. The most common nontremor feature was tandem gait abnormality (40%). Moreover, most of the patients had Glass Scale II. Conclusion: Baseline asymmetry of tremor and male predominance were observed in the study. While hand tremor was the most common form of tremor, tandem gait abnormality was the most common nontremor feature as observed in patients with ET.
A Remark on the Dixmier Conjecture
Authors: Bavula V. V. , Levandovskyy V. 
Published: March 2019

AbstractThe Dixmier Conjecture says that every endomorphism of the (first) Weyl algebra $A_{1}$ (over a field of characteristic zero) is an automorphism, i.e., if $PQ-QP=1$ for some $P,Q\in A_{1}$, then $A_{1}=K\langle P,Q\rangle$. The Weyl algebra $A_{1}$ is a $\mathbb{Z}$-graded algebra. We prove that the Dixmier Conjecture holds if the elements $P$ and $Q$ are sums of no more than two homogeneous elements of $A_{1}$ (there is no restriction on the total degrees of $P$ and $Q$).
CORDEX-WRF v1.3: development of a module for the Weather Research and Forecasting (WRF) model to support the CORDEX community
Authors: Fita Lluís , Polcher Jan , Giannaros Theodore M. , Lorenz Torge , Milovac Josipa , Sofiadis Giannis , Katragkou Eleni , Bastin Sophie 
Published: March 2019

Abstract. The Coordinated Regional Climate Downscaling Experiment
(CORDEX) is a scientific effort of the World Climate Research Program (WRCP)
for the coordination of regional climate initiatives. In order to accept an
experiment, CORDEX provides experiment guidelines, specifications of regional
domains, and data access and archiving. CORDEX experiments are important to study
climate at the regional scale, and at the same time, they also have a very
prominent role in providing regional climate data of high quality. Data
requirements are intended to cover all the possible needs of stakeholders
and scientists working on climate change mitigation and adaptation policies
in various scientific communities. The required data and diagnostics are
grouped into different levels of frequency and priority, and some of them even
have to be provided as statistics (minimum, maximum, mean) over different
time periods. Most commonly, scientists need to post-process the raw output
of regional climate models, since the latter was not originally designed to
meet the specific CORDEX data requirements. This post-processing procedure
includes the computation of diagnostics, statistics, and final homogenization
of the data, which is often computationally costly and time-consuming.
Therefore, the development of specialized software and/or code is required.
The current paper presents the development of a specialized module (version 1.3) for the Weather Research
and Forecasting (WRF) model capable of
outputting the required CORDEX variables. Additional diagnostic variables not
required by CORDEX, but of potential interest to the regional climate
modeling community, are also included in the module. “Generic” definitions of
variables are adopted in order to overcome the model and/or physics
parameterization dependence of certain diagnostics and variables, thus
facilitating a robust comparison among simulations. The module is
computationally optimized, and the output is divided into different priority
levels following CORDEX specifications (Core, Tier 1, and additional) by
selecting pre-compilation flags. This implementation of the module does not
add a significant extra cost when running the model; for example, the addition
of the Core variables slows the model time step by less than a 5 %. The use
of the module reduces the requirements of disk storage by about a 50 %. The
module performs neither additional statistics over different periods of time
nor homogenization of the output data.
Crucibles, Tuyères, and Bellows in aLongue DuréePerspective: Aspects of Technological Style
Authors: Yahalom-Mack Naama 
Published: March 2019

AbstractThe article examines changes in metalworking tools during the second and early first millennia BCE as a reflection of broader cultural and political developments. It is assumed that producers who consistently choose a similar set of production actions belong to the same social and cultural group, and that technological choices are notoriously conservative. Therefore, changes in these choices are significant and could reflect broader societal developments, such as migrations and increasing political control. Based on the development or changes in the components of the metalworking tool kit of crucibles, pot bellows, and tyères, I identify several such changes or turning points, particularly during the transitions from the Middle to the Late Bronze Age and the Iron Age I to Iron Age IIA. I argue that while changes during the former transition reflect the influx of foreigners, changes during the latter transition are also due to considerable internal political change.
Quarante ans de participation publique en environnement, aménagement du territoire et urbanisme au Québec : entre expression des conflits et gestion consensuelle
Authors: Bherer Laurence , Gauthier Mario , Simard Louis 
Published: March 2019

En près de 40 ans, les revendications pour plus de participation et de transparence, ainsi que la diffusion du principe de développement durable ont profondément transformé les secteurs de l’environnement, de l’aménagement du territoire et de l’urbanisme. Au fil des décennies, divers types de dispositifs de participation publique ont vu le jour dans ces deux secteurs d’activité qui ont permis de démocratiser le rapport gouvernants / gouvernés et la relation entre les pouvoirs publics et la société civile. À partir d’une grille d’analyse axée sur deux dimensions – ouverture / fermeture et antagoniste / consensuel – nous analysons les différents dispositifs de participation publique à l’oeuvre dans ces deux secteurs. L’analyse tend à montrer que : 1) au cours des 40 dernières années, les dispositifs participatifs se sont multipliés ; 2) aux dispositifs participatifs traditionnels permettant l’expression des conflits et des oppositions se sont progressivement ajoutés des dispositifs davantage orientés vers la recherche du consensus et la résolution des conflits ; 3) de nos jours, ces deux grandes catégories de dispositifs cohabitent et peuvent parfois apparaître comme étant complémentaires et parfois comme étant contradictoires.
Türkçe Kısa Mesajları Sınıflandıran Çok Katmanlı Süzgeçleme Mimarisi ve Akıllı SMS Kutusu
Authors: BESTİL H. İbrahim , GÜVENSAN M. Amaç 
Published: March 2019

Kısa
mesaj servisi en yaygın kullanılan iletişim kanallarından biridir. Kişisel,
reklam, promosyon, etkinlik bildirimi, satış onaylama vb. bir çok farklı amaç
için kullanılan kısa mesajların
sayısının her geçen gün artması takip edilebilirliklerini ve aranan
mesajın mesaj kutusunda hızlıca bulunmasını zorlaştırmaktadır. Öte yandan
istenmeyen mesajların mesaj kutusunu doldurması ve mesaj kirliliği yaratması
bir diğer önemli problemdir. Bu çalışmada Türkçe Kısa Mesajları sınıflandırmak
ve akıllı bir SMS kutusu oluşturmak amacıyla Çok Katmanlı Süzgeçleme Mimarisi
önerilmiştir. Ayrıca bu mimari bir Android uygulaması üzerinde gerçeklenmiştir.
Bu mimari yardımı ile telefona ulaşan mesajlar kişisel, ticari, otp kodları,
hatırlatıcı ve istenmeyen adı altında 5 farklı kategoriye ayrılmaktadır.
Önerilen mimari Kara Liste, Regex, Makine öğrenmesi, ve Beyaz Liste
süzgeçlerinden oluşmaktadır. Makine öğrenmesi süzgecinde Naive Bayes, Bayes
Net, J48 ve Random Forest algoritmalarının performansları incelenmiştir ve Random
Forest %87’lik başarısı nedeniyle uygulamada tercih edilmiştir. Önerilen çok
katmanlı yapı sayesinde mesaj sınıflandırma süresi azaltılırken sınıflandırma
başarısı %93’e yükseltilmiştir. Ayrıca başarının yükseltilmesinde seçilen
özellikler ve Zemberek kütüphanesinin kullanımı ile kelimelerin türlerinin ve köklerinin elde
edilmesi önemli rol oynamıştır.
Super-sech Soliton Dynamics in Optical Metamaterials with Generally Parabolic Law of Nonlinearity Using Lagrangian Variational Method
Authors: Ayela Amour , Edah Gaston , Elloh Camille , Djossou Ga´etan 
Published: March 2019

Aims/ Objectives: This paper studies the impact of the generally parabolic law of nonlinearity on the evolution of the energy of super-sech soliton dynamics.Study Design: generally parabolic law of nonlinearity terms study.
Place and Duration of Study: Department of Physics, Faculty of Sciences and Technology(FAST),
University of Abomey Calavi, B´ enin. between Febuary 2018 and January 2019.
Methodology: Variational approach, namely, the Lagrangian Variational Method (LVM) is presented. The different results are obtained using standard fourth order Runge-Kutta method for integration of the system of ordinary differential equation systems.Results: Dynamics of the different parameters (amplitude, center position, pulse width, chirp, frequency and phase) has been presented with respect to propagating distance.Conclusion: This study reveals that the generally parabolic law of nonlinearity terms don’t affect the energy of the system but influence the pulse phase.
Revealing the Critical Role of the Lone Pair Electrons of Bi3+ in Electrocatalytic Oxygen Reduction Reaction on Mn‐Based BiMn2O5 Mullite Surface
Authors: Zhao Chunning , Li Huan , Wang Wanying , Xu Jinchao , Shao Bin , Wan Xiang , Yu Meng , Cheng Fangyi , Wang Weichao 
Published: November 2024

AbstractThere is a research gap regarding the role of lone pair electrons of post‐transition metal cations in catalysis field, yet such studies hold significant implications for expanding their applications. Herein, the role of Bi3+ ion lone pair electrons in electrocatalytic oxygen reduction reaction (ORR) is elucidated using ternary mullite oxides as prototype catalysts. Among the three synthesized mullites ((Sm/Y/Bi)Mn2O5), BiMn2O5 exhibits notably superior ORR catalytic activity. Through advanced characterization techniques, including in situ Raman, in situ infrared, and X‐ray absorption spectroscopy, combined with theoretical calculations, it is determined that the superior electrocatalytic performance of BiMn2O5 originates from the lone pair electrons that activate catalytic sites through stereochemical effects. Specifically, the Bi3+ lone pair electrons in the 6s orbital near Fermi level interact with O 2p orbitals, causing a shift of the oxygen ligands, and significant variance in A─O bond lengths. This structural distortion of BiO8 coordination unit directly results in a large Mn─O bond angle at the active center of BiMn2O5 and strong covalent interactions, facilitating charge transfer and refining the adsorption behavior of oxygen intermediates to achieve the overpotential of 0.25 V vs. RHE. This study provides insights into developing next‐generation catalysts by harnessing the lone pair electrons of post‐transition metal cations.
Precisely Engineering of Ångström‐Scale Dual Single Atom Drive [Co‐O] Spin‐Orbit Coupling to Boost Lithium–Oxygen Batteries Electrocatalysis
Authors: Fu Yaning , Wang Nan , Huang Mengyao , Li Zhongjun , Lu Youcai , Liu Qingchao 
Published: November 2024

AbstractDual‐atom catalysts (DACs) have emerged as a novel area of investigation in lithium–oxygen (Li‐O2) batteries due to their distinctive synergistic mechanisms. However, achieving precise control of the active site structure and unraveling the synergistic effects of bimetallic species remains a significant challenge. Here, the study reports a pre‐encapsulated pyrolysis strategy using a Co‐based Robson‐type binuclear complex as a precursor to mediate the synthesis of dual single‐atom Co (Co‐DAC) with precise angstrom‐scale inter‐site distance configuration, serving as an efficient catalyst for Li‐O2 batteries. The tailored structure induces significant charge redistribution, reducing crystal field splitting energy (ΔO). The high‐spin Co species generate a strong electronic driving force, forming flexible σ and δ‐like bonds with the crucial oxygen intermediate (*O). Simultaneously, enhanced Co‐O spin‐orbit coupling facilitates electron transport along the bridging O‐channel, forming highly active Co‐O‐O‐Co electron chains that synergistically adsorb *O, establishing a favorable reaction pathway. Significant optimization of Li‐O2 batteries redox kinetics is achieved based on the well‐defined local structure of dual single‐atom Co sites. This work enhances the understanding of the dependence between rational design of custom structures and corresponding electron transfer dynamics, while providing new strategies and theoretical guidance for DACs to help develop high‐performance Li‐O2 batteries.
Controllable Design of “Nested Doll” MoS2/V2O3 Heterostructures Promotes Polarization Effects for High‐Efficiency Microwave Absorption
Authors: Zhao Jiarui , Wang Zhen , Wang Hao , Liu Panbo , Che Renchao 
Published: November 2024

AbstractSpecial multilayer heterostructures and lattice modulation play a crucial role in the field of microwave absorption. Herein, a unique “nested doll” MoS2/V2O3 heterostructures are synthesized via crystal epitaxy growth and solvothermal strategy. The synchronized modulation of lattice spacing and interfacial vacancies in MoS2 nanosheets is achieved by adjusting the S2⁻ concentration. A high concentration of S2⁻ expands the MoS2 lattice spacing and increases interfacial vacancies, facilitating the precise modulation of the orderly arrangement of MoS2‐V2O3‐MoS2 layers and inducing interfacial polarization. By increasing the number of V2O3‐MoS2 layers from two to five, a built‐in electric field is formed, which enhances charge transfer from the MoS2 surface to the V2O3 core. The introduction of vacancies reduces the MoS2 band gap, lowers the electron hopping barrier, increases dielectric loss, and ultimately synergistically improves microwave absorption (MA). As a result, the “nested doll” MoS2/V2O3‐5 (5 layers) microspheres exhibit superior MA behavior compared to other MoS2/V2O3 absorbers. The reflection loss reaches −69.65 dB and the effective absorption bandwidth achieves 7.68 GHz. These discoveries have contributed to the further development of multilayer heterostructures and improved advances in the theory of energy band structures and electromagnetic properties.
Thermal and Mechanical Robust Solid‐Solid Phase Change Materials Enabled by Reactive Crosslinkable Poly(Ethylene Glycol)s via Facile Thiol‐Ene Photo‐Click Chemistry
Authors: Wang Minghang , Zhang Yong Jian 
Published: November 2024

AbstractSolid–solid phase change materials (SSPCMs) are among the most promising candidates for thermal energy storage and management. Excellent shape stability, high heat storage capacity, and satisfying mechanical properties are essential for the practical applications of SSPCMs, yet giving PCMs these characteristics at the same time remains an unmet challenge. Herein, the synthesis of PEG‐PVEG copolymers is reported with various vinyl content using a synergistic catalysis strategy, leading to novel cross‐linked PEG‐based SSPCMs via a thiol‐ene photo‐crosslinking reaction. These PCMs exhibit excellent shape stability and remarkable energy storage capabilities with latent heat up to 128.3 J g−1. The materials exhibit exceptional thermal stability and retain their energy storage capacity after 500 heating‐cooling cycles. Notably, the materials show superior mechanical strength and excellent toughness. Furthermore, the latent heat enthalpy can be further improved to 146.8 J g−1 without erosion of shape stability by the encapsulation of PEG into present SSPCM. The enhancement of both thermal and electrical conductivities is also demonstrated by the phase change composites (PCCs) incorporating multi‐walled carbon nanotubes (MWCNTs). Overall, this study presents a convenient and feasible strategy for developing SSPCMs with excellent shape stability, high latent heat and satisfying mechanical properties for thermal management.
Scalable Processing of Glass with Multi‐Functional Cu Coating
Authors: Wang Dan , Zhang Xuelu , Xing Yan , Liu Guanghua , Wu Hui , Pan Wei 
Published: November 2024

AbstractFunctional glass has been intensively studied as a future material with improved comfort, safety, and practicality across a variety of settings, including industrial, and residential environments. The integration of copper coatings on glass is noteworthy for its broad‐spectrum germicidal properties. When applied to frequently touched surfaces, this copper‐enhanced glass plays a crucial role in controlling infections, underscoring its significance in healthcare and public health contexts. Herein, an innovative approach for processing multifunctional copper coating on glass through atmospheric plasma spraying (APS) is introduced. The Cu coating demonstrates remarkable bactericidal efficiency against both Gram‐positive and Gram‐negative bacteria, achieving a 99.9% inhibition rate within 5 h. Moreover, the coating maintains its biocidal effectiveness for up to 3 days against these bacterial strains. The Cu coated glass also incorporates an electrical heating function. This feature allows the glass to increase its surface temperature by ≈7 °C with a minimal power load of 2V. The coating's transparency is variable and can be adjusted through the APS parameters, depending on the desired copper surface coverage. The combination of superior antibacterial properties and electrical heating capability makes the Cu coated glass as high‐performance material for medical applications, offering dual functions of infection control and temperature regulation.