bluuebunny/crossref_metadata_2025_split huggingface dataset:
Isolated breast hydatid cyst: Imaging features
Authors: Ines Mazhoud , Mariem Ben Lassoued , Marwa Moussaoui , Amina Ben Salem , Chiraz Hafsa 
Published: September 2022

AbstractHydatid cyst (HC) of the breast is a rare entity, even in endemic areas. We report the radiologic features of an isolated breast HC in a 50‐year‐old woman. Imaging findings may mimic other common breast lesions, but specific imaging features help establish an accurate diagnosis to adapt therapeutic management.
Reaction Mechanism of Tetrahydrofurfuryl Alcohol Hydrogenolysis on Ru/SiO2 Studied by In‐Situ FTIR Spectroscopy
Authors: Innocenti Giada , Emig Stefan , Meyer Lars , Mueller Matthias , Hanf Schirin , Schunk Stephan A. , Kindler Alois M. , Sievers Carsten 
Published: September 2022

AbstractIn situ infrared spectroscopy is used to gain a deep understanding of the surface reactions during the hydrogenolysis of tetrahydrofurfuryl alcohol vapor on Ru/SiO2 and SiO2 and to identify intermediates that lead to catalyst deactivation. Time‐resolved in situ infrared spectroscopy experiments elucidate the formation and consumption of different surface species. Hydroxy valeraldehyde is the key intermediate and can undergo hydrogenation or the Tishchenko reaction. Both reactions yield 1,5‐pentanediol, but the latter also produces hydroxy valeric acid, which can polymerize on the catalyst surface. Finally, hydroxy‐valeraldehyde can also participate in fouling by means of aldol condensation. The same reaction intermediates are found both on Ru/SiO2 and SiO2 suggesting that the support plays a role in retaining the molecules on the surface and favoring the multi‐step reaction mechanism on the surface rather than the direct ring opening mechanism.
High‐Efficiency Electrogenerated Chemiluminescence of Novel Zr‐Based Metal–Organic Frameworks through Organic Linkers Regulation
Authors: Shao Mingzheng , Li Yuyan , Chen Mingyue , Liu Wendong , Sun Yuzhu , Chu Yiyue , Sun Yajing , Li Xiyan , Zhang Ruizhong , Zhang Libing 
Published: September 2022

AbstractExploiting efficiently luminescent metal‐organic frameworks (MOFs) for electrogenerated chemiluminescence (ECL) in aqueous solution is very intriguing and challenging. Described here are novel Zr‐based metal–organic frameworks (MOFs) electrochemiluminophores (ECLphores) synthesized through a facile solvothermal method by using polycyclic aromatic hydrocarbons (PAHs) as organic linkers. The photoluminescence (PL) and ECL of Zr‐based MOFs are affected by the actual organic linkers’ inherent properties and activities. The tetraphenyl‐carboxylate‐pyrene derived NU‐1000 shows the best ECL performance and reveals an enormous ECL quantum efficiency of 1.42‐fold higher than that of the standard Ru(bpy)32+by using K2S2O8as the coreactant. Due to its providential energy gap, it facilitated the feasibility of electron removal and injection identified by experiments and density functional theory (DFT) calculations. Moreover, the ECL mechanisms of NU‐1000 were elucidated based on the voltammetric ECL method, photoluminescence, and spooling ECL spectroscopies. The exceptional porosity and high surface area for the acceleration of mass and electron transfer during electrochemical reactions, along with the coordination immobilization of ECL active PAHs onto the MOF nodes for abolishing energy loss caused by notorious π‐π stacking and intramolecular rotation, representing significant advantages in the development of Zr‐based MOFs for ECL applications.
Effects of tillage and fallow rotation on wireworm populations and damage to cereal grain crops in Montana
Authors: Morales‐Rodriguez Anuar , Wichman David , Wanner Kevin W. 
Published: September 2022

AbstractWireworms, the soil‐dwelling larval stage of click beetles, are an increasing pest threat to the sustainable production of cereals, potato (Solanum tuberosum L.), and other crops. Producers believe that soil tillage and crop–fallow rotation can reduce the damage caused by wireworms. This study used four field plots maintained under the same regimen of tilling and no‐till management in combination with continuous cropping and alternating fallow systems for more than 17 yr at the Montana State University Central Agricultural Research Station near Moccasin, MT. Bait traps were used to monitor wireworm numbers in the soil during 2011, 2012, and 2013, along with stand density and yield assessments, to gain insights into the effectiveness of tillage and fallow cultural practices to reduce wireworm populations. Wireworm numbers were higher in continuously cropped plots than in those with an alternating crop and fallow rotation. No differences in wireworm numbers were detected when comparing tillage versus no‐tillage plots. Up to six different species of wireworm were identified within an individual field, and the diversity of their biology may influence the effectiveness of cultural practices.
Acridone‐Based Host Materials for Green Phosphorescent and Thermally Activated Delayed Fluorescent OLEDs with Low‐Efficiency Roll‐Offs
Authors: Yao Ruijuan , Liu Di , Wan Huihui , Mei Yongqiang , Wang Jiahui , Cai Rui , Zhang Huimin , Zhao Yuzhen , He Zemin 
Published: September 2022

AbstractBy linking the carbazole unit to the nitrogen atom of acridone through phenyl or pyridyl, two compounds, named 10‐(4‐(9H‐carbazol‐9‐yl)phenyl)acridin‐9(10H)‐one (AC‐Ph‐Cz) and 10‐(5‐(9H‐carbazol‐9‐yl)pyridin‐2‐yl)acridin‐9(10H)‐one (AC‐Py‐Cz) were designed and synthesized. These two materials, characterized with highly twisted and rigid structure, good thermal stability, and balanced carrier‐transporting properties, were employed as host materials for green phosphorescent and thermally activated delayed fluorescent organic light‐emitting diodes (OLEDs). The carbazole group, despite its small contribution to the highest occupied molecular orbitals (HOMOs) of these two materials, plays an essential role as an intramolecular host in energy delivering and improving the hole transporting ability of these two hosts. The incorporation of the electron‐deficient pyridyl group as a linking group slightly improves the electron transporting capability of AC‐Py‐Cz. The green phosphorescent OLED (PhOLED) based on AC‐Py‐Cz exhibited excellent device performance with a turn‐on voltage of 2.5 V, a maximum power efficiency and an external quantum efficiency (ηext) of 89.8 lm W−1 and 25.2 %, respectively, benefitting from the better charge‐balancing ability of AC‐Py‐Cz host due to the presence of the pyridyl bridge. More importantly, all the devices based on these two hosts showed low efficiency roll‐off at high brightness due to the suppressed non‐radiative transition in the emitting layer. In particular, the AC‐Py‐Cz‐hosted green PhOLED exhibited an efficiency roll‐off of 1.6 % from the maximum next at a high brightness of 1000 cd m−2 and a roll‐off of 15.9 % at an extremely high brightness of 10000 cd m−2. This study manifests that acridone‐based host materials have great potential in fabricating OLEDs with low efficiency roll‐off.
Synthesis of Polysubstituted Symmetrical BODIPYs via Fischer Carbene Complexes: Theoretical, Photophysical and Electrochemical Evaluation
Authors: Vázquez Juan Luis , Velazco‐Cabral Ivan , Flores‐Álamo Marcos , Turlakov Gleb , Rodríguez Geraldina , Moggio Ivana , Arias Eduardo , Peña‐Cabrera Eduardo , Vázquez Miguel A. 
Published: September 2022

AbstractA series of new symmetrical highly substituted BODIPYs 6 a–l was synthesized through a prefunctionalization approach in 35 %–89 % yields from the pyrrole core. This strategy allowed modulation of the substituents at the different positions based on the choice of Fischer's alkynyl carbenes, oxazolones and aldehydes used as precursors. The substituent variation at positions 2, 6, 3 and 5 had the greatest effect on the modulation of their photophysical properties such as absorption (λabs) and emission (λem) wavelengths, extinction coefficient (ϵ), quantum yields (ϕ), Stokes shifts (Δν), fluorescence decay, radiative (krad) and non‐radiative (knr) constants and the CIE 1931 coordinates. Theoretical calculations allowed to corroborate the effect of the substituents of meso‐position on the modification of the dihedral angles. Cyclic voltammetry studies revealed that the BODIPY series presents similar redox potential behavior, being electrochemically active even in successive cycles, which suggests that transport by diffusion is the dominant process.
Comprendre les effets du leadership d’habilitation sur les comportements positifs et négatifs de performance: Étude dans le secteur manufacturier
Authors: Turcotte‐Légaré Nicolas , Gaudet Marie‐Claude , Doucet Olivier 
Published: September 2022

AbstractFor several years, the North American manufacturing sector has been facing several labour issues that undermine productivity. To address these issues and remain competitive, manufacturing firms must implement measures to promote overall worker performance. This study presents an integrative to understand the differentiated impact of empowering leadership (EL) on four dimensions of performance (task, citizenship, innovation, deviance) through two mediators (psychological empowerment (PE) and affective organizational commitment). Structural equation modeling was used to analyze data from 250 employee‐supervisor dyads in the manufacturing industry. On the one hand, our results reveal that EL exerts a positive influence on citizenship and innovative behavior through increased PE. On the other hand, it is negatively associated to deviance behaviors through heightened levels of affective organizational commitment. This study allows us to better understand how EL enhances multiple performance dimensions necessary to organizations’ competitiveness in the manufacturing and other sector.
The brain‐before‐heart strategy for coronary artery bypass grafting in the severely atherosclerotic aorta: A single‐institution experience
Authors: Nazer Rakan I. , Albarrati Ali M. 
Published: September 2022

AbstractBackgroundSevere atherosclerosis of the ascending aorta (SAA) in patients undergoing surgical revascularization by coronary artery bypass grafting (CABG) is becoming an increasing problem as more elderly patients are diagnosed with coronary artery disease. Strokes and other neurologic insults are common complications in this group, with devastating impacts on outcomes and prognoses.HypothesisEarly detection of the atherosclerotic aorta and the application of a stroke prevention protocol will reduce the risk of stroke in patients with SAA.MethodsIn 2012, we adopted a protocol devised to preemptively detect and manage patients suspected of having SAA. From the time of the application of the protocol, we compared the immediate and late outcomes of CABG in SAA in the 8 years preceding the protocol in a “control” group (30 patients) and in the 8 years following the protocol in a “brain” group (69 patients).ResultsMore patients with SAA were detected after the initiation of the protocol. They had significantly more history of stroke, renal dysfunction, and left main coronary disease. The percutaneous coronary intervention was utilized more after the protocol (26% vs. 7%) and there was far less utilization of replacement of the ascending aorta (12% vs. 37%). Postoperative stroke rates were significantly less after the protocol (2% vs. 18%), with an almost twofold reduction in stroke associated with SAA even after risk adjustment. The composite endpoints of cardiac death, nonfatal myocardial infarction, and stroke were significantly reduced after initiating the protocol at a median of 2.3 years from the time of revascularization.ConclusionEarly detection of SAA and individualized therapeutic strategies for revascularization is effective in reducing athero‐embolic brain injury and are associated with better prognosis.
Cat swarm optimized ensemble technique for emotion recognition in speech signals
Authors: Butta Rajasekhar , Maddu Kamaraju , Vangala Sumalatha 
Published: September 2022

SUMMARYOne of the fastest and the natural mode of communication between humans is speech. Recently in speech signal processing, noncontact clinical issue, patient remote monitoring, and man–machine interaction application; emotion recognition from the speech is becoming a popular topic of research. The basic principle behind speech emotion recognition is to analyze the diverse emotions expressed by a speaker while uttering the same obsession under dissimilar emotional circumstances. A novel speech emotion recognition method is formulated in this research study in two major phases: spectral feature extraction and recognition. Initially, the extracted spectral skewness, delta AMS, spectral flux, spectral kurtosis, spectral spread, and spectral slope features from the input speech signal are subjected to the proposed ensemble classifier to determine the corresponding emotions from the input signal. The suggested ensemble classifier includes neural network 1, neural network 2, neural network 3, random forest, and recurrent neural network. The final recognized outcome is acquired from the RNN, which is enhanced via tuning its weight. A new improved cat‐swarm optimization algorithm is used to address this optimization problem. Finally, the obtained findings are compared to other state‐of‐the‐art algorithms.
Sphingosine 1‐phosphate lyase facilitates cancer progression through converting sphingolipids to glycerophospholipids
Authors: Uranbileg Baasanjav , Kurano Makoto , Kano Kuniyuki , Sakai Eri , Arita Junichi , Hasegawa Kiyoshi , Nishikawa Takeshi , Ishihara Soichiro , Yamashita Hiroharu , Seto Yasuyuki , Ikeda Hitoshi , Aoki Junken , Yatomi Yutaka 
Published: September 2022

AbstractBackgroundIn addition to potent agonist properties for sphingosine 1‐phosphate (S1P) receptors, intracellularly, S1P is an intermediate in metabolic conversion pathway from sphingolipids to glycerolysophospholipids (glyceroLPLs). We hypothesized that this S1P metabolism and its products might possess some novel roles in the pathogenesis of cancer, where S1P lyase (SPL) is a key enzyme.MethodsThe mRNA levels of sphingolipid‐related and other cancer‐related factors were measured in human hepatocellular carcinoma (HCC), colorectal cancer, and esophageal cancer patients’ tumours and in their adjacent non‐tumour tissues. Phospholipids (PL) and glyceroLPLs were measured by using liquid chromatography‐tandem mass spectrometry (LC‐MS/MS). In‐vitro experiments were performed in Colon 26 cell line with modulation of the SPL and GPR55 expressions. Xenograft model was used for determination of the cancer progression and for pharmacological influence.ResultsBesides high SPL levels in human HCC and colon cancer, SPL levels were specifically and positively linked with levels of glyceroLPLs, including lysophosphatidylinositol (LPI). Overexpression of SPL in Colon 26 cells resulted in elevated levels of LPI and lysophosphatidylglycerol (LPG), which are agonists of GPR55. SPL overexpression‐enhanced cell proliferation was inhibited by GPR55 silencing. Conversely, inhibition of SPL led to the opposite outcome and reversed by adding LPI, LPG, and metabolites generated during S1P degradation, which is regulated by SPL. The xenograft model results suggested the contribution of SPL and glyceroLPLs to tumour progression depending on levels of SPL and GPR55. Moreover, the pharmacological inhibition of SPL prevented the progression of cancer. The underlying mechanisms for the SPL‐mediated cancer progression are the activation of p38 and mitochondrial function through the LPI, LPG‐GPR55 axis and the suppression of autophagy in a GPR55‐independent manner.ConclusionA new metabolic pathway has been proposed here in HCC and colon cancer, SPL converts S1P to glyceroLPLs, mainly to LPI and LPG, and facilitates cancer development.
Trajectory of clinical symptoms in relation to amyloid chronicity
Authors: Birdsill Alex C. , Koscik Rebecca L. , Cody Karly A. , Jonaitis Erin M. , Cadman Robert V. , Erickson Claire M. , Chin Nathaniel A. , Przybelski Robert J. , Carlsson Cynthia M. , Asthana Sanjay , Christian Bradley T. , Eisenmenger Laura B. , Betthauser Tobey J. , Johnson Sterling C. 
Published: September 2022

AbstractIntroductionWhile it is generally appreciated that amyloid precedes symptomatic Alzheimer's disease (AD) by decades, a greater understanding of this timeline may increase prognostic accuracy, planning, and care of persons who are on the AD continuum.MethodsWe examined trajectories of Clinical Dementia Rating–Sum of Boxes (CDR‐SB) relative to estimated years of amyloid positivity (A+) in n = 123 participants who were all A+ based on [C‐11]Pittsburgh compound B positron emission tomography.ResultsThe average amyloid chronicity at CDR‐SB of 2.5 was 20.1 years. The average trajectory of CDR‐SB accelerated after 10 years of elevated amyloid and varied greatly between 10 and 30 years. Exploratory analyses suggested that older age and higher volume of white matter hyperintensities shortened the interval between amyloid onset and cognitive impairment.DiscussionThe recontextualization of amyloid burden into the time domain will facilitate studies of disease progression, the influence of co‐pathology, and factors that hasten or slow cognitive impairment.
New occurrence of Meloidogyne graminicola (Nematoda: Meloidogyninae) from rice fields in Italy: Variability and phylogenetic relationships
Authors: Fanelli Elena , Gaffuri Francesca , Troccoli Alberto , Sacchi Stefano , De Luca Francesca 
Published: September 2022

AbstractSince the first detection of Meloidogyne graminicola in Piedmont, North Italy, in 2016, further inspections for the presence of the rice root‐knot nematode were carried out in rice fields of neighboring regions, in accordance with the Italian NPPO (National Plant Protection Organization) to support the official phytosanitary measures, to enable the early detection of the rice pest, and to prevent its spread within the national territory. In 2018, surveys of rice fields in Lombardy region revealed a new occurrence of M. graminicola. In the present study, we confirmed the identification of the rice nematode in Lombardy using the ribosomal ITS region and the mitochondrial COI and COII genes. The sequences and phylogenetic analyses revealed that Lombardy M. graminicola population grouped in all trees in the main cluster containing Meloidogyne species belonging to graminis group, but always in a different subgroup compared to the Piedmont population of M. graminicola. These results clearly suggest that the two Italian populations have been recently and independently introduced and confirm that the geographic origin is not the main factor leading to M. graminicola population variability.
Common Whitethroats Curruca communis show a continuum of residency duration but a high degree of between‐years site fidelity at nonbreeding grounds in Nigeria
Authors: Tapia‐Harris Claudia , Cresswell Will 
Published: September 2022

AbstractThe nonbreeding period represents a significant part of an Afro‐Palearctic migratory bird's annual cycle. Decisions such as whether to remain at a single site and whether to return to it across years have important effects on aspects such as survival, future breeding success, migratory connectivity, and conservation. During this study, we color‐ringed 337 common Whitethroats Curruca communis and undertook daily resightings to understand site persistence and the degree of site fidelity throughout three nonbreeding periods (November–April) in Nigeria. The probability of detecting a color‐ringed Whitethroat when it was present was 0.33. Site persistence varied widely across individuals (1–165 days) and did not differ significantly with sex or year, though first‐year birds remained for significantly shorter periods than adults. We believe that shorter residencies are likely due to the use of multiple stationary nonbreeding sites rather than low winter survival. A minimum of 19% of individuals returned to the study site the following year and shifted, on average, 300 m, suggesting that Whitethroats have a relatively high degree of between‐years site fidelity at a very fine scale. An individual's previous residency duration did not seem to determine its residency duration the following year. We suggest that spatial fidelity is high and constant through years, but temporal fidelity is not, and individual residency patterns vary, probably according to yearly and seasonal conditions. Our results highlight the complexity of the annual cycle of a single species and the importance of carrying out in situ, fine‐scale research throughout a migrant's annual cycle over several years.
Tension zone trapped by exogenous cline: Analysis of a narrow hybrid zone between two parapatricOxytropisspecies (Fabaceae)
Authors: Wang Hui , Li Xin‐Nuo , Mo Song‐Hua , Wang Min , Liu Pei‐Liang , Li Qin , Chang Zhao‐Yang 
Published: September 2022

AbstractHybrid zones have been widely highlighted for their interest in understanding evolutionary processes. It is generally accepted that hybrid zones can be maintained in a balance between dispersal and selection. However, the selective forces can either be endogenous (i.e., genetic incompatibilities between parental taxa) or exogenous (i.e., parental taxa are adapted to different environments). In this study, we evaluated these alternatives and determined the maintenance of a narrow hybrid zone between parapatric distributedOxytropis diversifoliaandO. leptophyllain Nei Mongol, China. For 507 individuals sampled from two populations in the hybrid zone, 12O. diversifoliapopulations and fiveO. leptophyllapopulations, we measured leaf‐morphological characteristics, quantified genetic structure using 11 nuclear microsatellite loci and five chloroplast DNA intergenic regions, collected micro‐ and macrohabitat data, and conducted geographical cline analysis. We found that the two species differed in leaf morphology, and putative hybrids showed either intermediacy or a bias toO. diversifolia. Parental taxa formed two genetically distinct clusters, while populations in the hybrid zone consisted of both parental forms and various admixed individuals, exhibiting a bimodal pattern. The hybrid zone was coupled to ecological transitions of both microhabitat (i.e., the slope) and macroclimatic conditions. However, the genetic clines were significantly narrower than the environmental cline. Our results indicate that endogenous selection can be primarily responsible for maintaining the hybrid zone, while local adaptation accounts for the position of the zone. We further suggest the probable outcome of hybridization could be introgression.
Examination of insulation diagnosis in substation by neural network with phase‐resolved partial discharge pattern reconstruction
Authors: Fujioka Shunya , Kawano Hideaki , Kozako Masahiro , Hikita Masayuki , Eda Osamu , Yaguchi Shuhei , Shiina Yasuharu 
Published: September 2022

AbstractSeveral studies for partial discharge (PD) pattern recognition using artificial neural network (ANN) were reported in the early 1990s. Usually, in an actual field such as a substation, data on partial discharge is scarcely available, or even rare. In many cases, the power supply phase required for the PRPD pattern cannot be easily obtained. We propose an ANN method that shifts the phase in which the maximum signal intensity detected with PD sensors is generated and used it as training and input data, even for the few phases resolved PD data available in the field. This ANN method was applied to the PRPD pattern obtained in a practical field. As a result, it was shown that the discrimination rate between PD and noise was improved, and therefore the proposed ANN method was found to be effective.