bluuebunny/crossref_metadata_2025_split huggingface dataset:
A specific notation for contrast medium and dehydrated ethanol injection into the vein of Marshall during mitral isthmus ablation—A case report
Authors: Zhang Wei , Li Xinyun , Su Guoying , Gao Xiaoyuan , Kong Qingzan 
Published: August 2022

AbstractBackgroundAblation of the vein of Marshall (VOM) by dehydrated ethanol (DE) is an important method for completely blocking the mitral isthmus (MI). Before DE ablation of the VOM, Marshall angiography should be performed so that the contrast medium is inevitably exposed to DE.MethodWe present a case of DE ablation of the VOM. When iodixanol was exposed to DE, some floccule embolized the lumen of the over‐the‐wire (OTW) balloon dilatation catheter and led to the impossibility of DE ablation. Then, we performed in vitro experiments: iodixanol, not iomeprol, produced many stable white floccules when it encountered DE.ConclusionIodixanol is not an appropriate contrast for DE ablation of the VOM. However, if there is no other alternative contrast, the following methods might be used to address the problem: ⑴ diluted iodixanol (iodixanol:normal saline 1:1) could be used for VOM ablation; or ⑵ the lumen of the OTW could be flushed by NS after VOM angiography, and then DE injection could be performed.
Intergenerational concordance of brain structure between depressed mothers and their never‐depressed daughters
Authors: Minami Fusaka , Hirano Jinichi , Ueda Ryo , Takamiya Akihiro , Yamagishi Mika , Kamiya Kei , Mimura Masaru , Yamagata Bun 
Published: August 2022

AimParents have significant genetic and environmental influences, which are known as intergenerational effects, on the cognition, behavior, and brain of their offspring. These intergenerational effects are observed in patients with mood disorders, with a particularly strong association of depression between mothers and daughters. The main purpose of our study was to investigate female‐specific intergenerational transmission patterns in the human brain among patients with depression and their never‐depressed offspring.MethodsWe recruited 78 participants from 34 families, which included remitted parents with a history of depression and their never‐depressed biological offspring. We used source‐based and surface‐based morphometry analyses of magnetic resonance imaging data to examine the degree of associations in brain structure between four types of parent‐offspring dyads (i.e. mother‐daughter, mother‐son, father‐daughter, and father‐son).ResultsUsing independent component analysis, we found a significant positive correlation of gray matter structure between exclusively the mother‐daughter dyads within brain regions located in the default mode and central executive networks, such as the bilateral anterior cingulate cortex, posterior cingulate cortex, precuneus, middle frontal gyrus, middle temporal gyrus, superior parietal lobule, and left angular gyrus. These similar observations were not identified in other three parent‐offspring dyads.ConclusionsThe current study provides biological evidence for greater vulnerability of daughters, but not sons, in developing depression whose mothers have a history of depression. Our findings extend our knowledge on the pathophysiology of major psychiatric conditions that show sex biases and may contribute to the development of novel interventions targeting high‐risk individuals.
Quality investment, inspection policy, and pricing decisions in a decentralized supply chain
Authors: Erkoc Murat , Gurnani Haresh , Ray Saibal , Jin Mingzhu 
Published: August 2022

This paper studies the interaction between two key quality management decisions—input conformance quality and inspection policy—and related wholesale and retail prices in a two echelon supply chain. Market demand depends on the retail price as well as the end‐product conformance quality, which itself depends on the input quality and the inspection scheme. Consistent with previous empirical findings in the literature, we show that an increase in quality does not always result in higher prices for consumers due to the cost‐lowering effect of better quality. We also show that a lower input quality may still result in higher end‐product quality because of how it might incentivize more and/or better inspection. Any interaction between input quality and inspection policy becomes more pronounced in the decentralized system due to incentive asymmetry between the channel partners. This makes the adoption of a full‐inspection policy more likely there compared to an integrated system. Indeed, while vertical competition due to decentralization results in higher prices for customers, it can also result in better quality of end products. Another interesting finding in the decentralized setting is that, somewhat counterintuitively, a player may indeed opt to bear a higher share of the penalty for defective products sold to consumers resulting in higher profits for the player.
Carbonate platform drowning caught in the act: The sedimentology of Saya de Malha Bank (Indian Ocean)
Authors: Betzler Christian , Lindhorst Sebastian , Reijmer John J. G. , Braga Juan Carlos , Lüdmann Thomas , Bialik Or M. , Reolid Jesus , Geßner Anna‐Lena , Hainbucher Dagmar , Bissessur Dass 
Published: August 2022

AbstractMesophotic reefs, hardgrounds and current‐controlled pelagic to hemipelagic carbonates are facies marking carbonate platform drowning successions, irrespective of the factors controlling this evolution. A modern analogue of a carbonate platform in a state of drowning, where these facies occur has not been properly reported on to date. In the present study, the sedimentary environments of the Saya de Malha Bank are characterized using a multi‐disciplinary approach including sedimentology, hydroacoustics, seismics and oceanography. The Saya de Malha Bank edifice with a surface of 40 808 km2 is located in the tropical Indian Ocean and lies in a water depth of 8 to 300 m extending from the surrounding more than 2000 m deep ocean floor, with no reef reaching the sea surface. Mesophotic coral and red algal facies co‐exist with hemipelagic and bioclastic sands, together with a hardground. Ocean currents and internal waves are identified as major sedimentological controlling factors in the absence of elevated nutrient influx. Many features distributed along the present‐day Saya de Malha Bank were described from studies presenting fossil examples of carbonate platform drowning. The results herein can therefore be applied to other drowning examples, in some cases allowing for more accurate interpretation of the stratigraphic record.
Sparse concordance‐based ordinal classification
Authors: Fan Yiwei , Gu Jiaqi , Yin Guosheng 
Published: August 2022

AbstractOrdinal classification is an important area in statistical machine learning, where labels exhibit a natural order. One of the major goals in ordinal classification is to correctly predict the relative order of instances. We develop a novel concordance‐based approach to ordinal classification, where a concordance function is introduced and a penalized smoothed method for optimization is designed. Variable selection using the penalty is incorporated for sparsity considerations. Within the set of classification rules that maximize the concordance function, we find optimal thresholds to predict labels by minimizing a loss function. After building the classifier, we derive nonparametric estimation of class conditional probabilities. The asymptotic properties of the estimators as well as the variable selection consistency are established. Extensive simulations and real data applications show the robustness and advantage of the proposed method in terms of classification accuracy, compared with other existing methods.
Internet penetration and multi‐product exporters: Firm‐level evidence from China
Authors: Ma Shuzhong , Hu Zengxi 
Published: August 2022

AbstractThis study explores the impact of Internet penetration on the firm‐product‐level behaviour of multi‐product exporters. While a substantial body of literature has explored the effect of the Internet on firm performance, especially extensive and intensive margins, few studies examine the product‐level behaviour within firms. Using highly disaggregated firm‐product‐level data covering Chinese manufacturing industrial firms from 2000 to 2007, we provide evidence on the effects of the Internet on product mix and product switching within firms. Specifically, because of the reduction in export market entry costs, the Internet can encourage more firms to enter the export market and increase market competition, which causes multi‐product exporters to skew exports towards best‐performing products and drop the products furthest away from its core competence. Meanwhile, the Internet can increase multi‐exporters' productivity and encourage firms to introduce new products, which are also further away from the core product. Productivity and competition cause multi‐product exporters to exhibit product switching, which results in the expansion of product scope.
Assessment of Exercise-Associated Gastrointestinal Perturbations in Research and Practical Settings: Methodological Concerns and Recommendations for Best Practice
Authors: Costa Ricardo J.S. , Young Pascale , Gill Samantha K. , Snipe Rhiannon M.J. , Gaskell Stephanie , Russo Isabella , Burke Louise M. 
Published: August 2022

Strenuous exercise is synonymous with disturbing gastrointestinal integrity and function, subsequently prompting systemic immune responses and exercise-associated gastrointestinal symptoms, a condition established as “exercise-induced gastrointestinal syndrome.” When exercise stress and aligned exacerbation factors (i.e., extrinsic and intrinsic) are of substantial magnitude, these exercise-associated gastrointestinal perturbations can cause performance decrements and health implications of clinical significance. This potentially explains the exponential growth in exploratory, mechanistic, and interventional research in exercise gastroenterology to understand, accurately measure and interpret, and prevent or attenuate the performance debilitating and health consequences of exercise-induced gastrointestinal syndrome. Considering the recent advancement in exercise gastroenterology research, it has been highlighted that published literature in the area is consistently affected by substantial experimental limitations that may affect the accuracy of translating study outcomes into practical application/s and/or design of future research. This perspective methodological review attempts to highlight these concerns and provides guidance to improve the validity, reliability, and robustness of the next generation of exercise gastroenterology research. These methodological concerns include participant screening and description, exertional and exertional heat stress load, dietary control, hydration status, food and fluid provisions, circadian variation, biological sex differences, comprehensive assessment of established markers of exercise-induced gastrointestinal syndrome, validity of gastrointestinal symptoms assessment tool, and data reporting and presentation. Standardized experimental procedures are needed for the accurate interpretation of research findings, avoiding misinterpreted (e.g., pathological relevance of response magnitude) and overstated conclusions (e.g., clinical and practical relevance of intervention research outcomes), which will support more accurate translation into safe practice guidelines.
Results of 40Ar/39Ar Dating of Ores of the Ermakovo F–Be Deposit, West Transbaikalia, Russia
Authors: Damdinov B. B. , Damdinova L. B. , Yudin D. S. 
Published: August 2022

Abstract
The Ermakovo F–Be deposit, the largest Be deposit in Russia and one of the world’s largest deposits, is located in West Transbaikalia. The ores of the deposit are diverse in their morphology and composition; mostly there are phenakite–bertrandite–fluorite metasomatites after limestones. The origin of Be mineralization is related to the stock of leucocratic subalkali aegirine-bearing granites, the age of which corresponds to 224–226 Ma. The available age of ores of 225.5–219 Ma is close to the age of ore-generating granites. To specify the age of the ores, we determined the 40Ar/39Ar age of K-feldspar and, for the first time, of the Be mineral milarite, a K- and H2O-bearing Be silicate (KCa2(Be2AlSi12O30)·H2O), from different ore bodies of the Ermakovo deposit. The age spectrum of milarite (sample Er-17) has a stable plateau in the high-temperature part, which consists of four consecutive steps composing ~50% of the released 39Ar with an age of 182.5 ± 3.0 Ma. The age of K-feldspars is similar (169.8–170.6 Ma). The results of 40Ar/39Ar dating of minerals from ores of the Ermakovo F–Be deposit indicate that the processes of mineral formation occurred over a long period from 225 to 170 Ma.
Experimental Study of the Solubility of Natural Tantalite and Pyrochlore and Tantalum and Niobium Oxides in Hydrothermal Fluoride–Chloride Solutions
Authors: Kotova N. P. , Korzhinskaya V. S. , Shapovalov Yu. B. 
Published: August 2022

Abstract
The concentration and temperature dependences of the solubility of tantalite, pyrochlore, and tantalum and niobium oxides in fluoride–chloride aqueous (mHF + mHCl) solutions at 300–550°C and 100 MPa (Co–CoO buffer) were studied experimentally. The initial concentration of HF varied from 0.01m to 2m, while the HCl concentration remained constant and was 0.5m. A comparative analysis of the equilibrium contents of Nb and Ta upon dissolution of tantalum and niobium oxides and natural tantalite and pyrochlore in fluoride, chloride, and mixed (mHF + mHCl) solutions was carried out.
Conduction properties of semiconductive multiwalled carbon nanotubes
Authors: Ahlskog M. , Herranen O. , Leppäniemi J. , Mtsuko D. 
Published: August 2022

AbstractWe have undertaken low-temperature conduction measurements on arc-discharge synthesized, semiconducting multiwalled carbon nanotubes (MWNT). The diameters of these are in the range 2.5–10 nm, corresponding to the sizes just above single-walled carbon nanotubes (SWNT), up to middle-sized MWNTs. The energy gap, inversely related to the diameter, varies strongly in this range, and consequently there is a strong dependence of the transport on tube diameter. Certain transport characteristics are much alike those found in SWNTs, such as the ON-state resistance and Coulomb blockade. However, the transport gap has a more complex behavior than the corresponding one in semiconducting SWNTs, and a number of features, such as negative differential resistance are commonly observed. Different models for the small bias transport behavior are briefly discussed, and we consider especially the possibility of conduction via the second layer.Graphical abstract
Impact of curvature based geometric constraints on F(R) theory
Authors: Loo Tee-How , De Avik , Arora Simran , Sahoo P. K. 
Published: August 2022

AbstractTheories of gravity are fundamentally a relation between matter and the geometric structure of the underlying spacetime. So once we put some additional restrictions on the spacetime geometry, the theory of gravity is bound to get the impact, irrespective of whether it is general relativity or the modified theories of gravity. In the present article, we consider two curvature-based constraints, namely the almost pseudo-Ricci symmetric and weakly Ricci symmetric condition. As a novel result, such spacetimes with non-null associated vectors are entirely classified, and then applying the obtained results, we investigate these spacetimes as solutions of the F(R)-gravity theory. The modified Friedmann equations are derived and analysed in a model-independent way first. Finally, two F(R) gravity models are examined for recent observational constrained values of the deceleration, jerk, and Hubble parameters. We further discuss the behavior of energy conditions.
Integration of the Lane–Emden equation for relativistic anisotropic polytropes through gravitational decoupling: a novel approach
Authors: Santana D. , Fuenmayor E. , Contreras E. 
Published: August 2022

AbstractIn this work we propose a novel approach to integrate the Lane–Emden equations for relativistic anisotropic polytropes. We take advantage of the fact that Gravitational Decoupling allows to decrease the number of degrees of freedom once a well known solution of the Einstein field equations is provided as a seed so after demanding the polytropic equation for the radial pressure the system is automatically closed. The approach not only allows to extend both isotropic or anisotropic known solutions but simplifies the computation of the Tolman mass whenever the Minimal Geometric Deformation is considered given that the $$g_{tt}$$

g

tt

component of the metric remains unchanged. We illustrate how the the method works by analyzing the solutions obtained from Tolman IV, Durgapal IV and Wymann IIa isotropic systems as a seed for the integration.
A simple protocol to construct solutions with vanishing complexity by Gravitational Decoupling
Authors: Contreras E. , Stuchlik Z. 
Published: August 2022

AbstractIn this work we develop a simple protocol to construct interior solutions through Gravitational Decoupling by the Minimal Gemetric Deformation extended satisfying the vanishing complexity condition. The method is illustrated by using Tolman VII and Tolman IV solutions as isotropic seeds.
Edge-Weighted Online Bipartite Matching
Authors: Fahrbach Matthew , Huang Zhiyi , Tao Runzhou , Zadimoghaddam Morteza 
Published: August 2022

Online bipartite matching is one of the most fundamental problems in the online algorithms literature. Karp, Vazirani, and Vazirani (STOC 1990) gave an elegant algorithm for unweighted bipartite matching that achieves an optimal competitive ratio of 1-1/e . Aggarwal et al. (SODA 2011) later generalized their algorithm and analysis to the vertex-weighted case. Little is known, however, about the most general edge-weighted problem aside from the trivial 1/2-competitive greedy algorithm. In this article, we present the first online algorithm that breaks the long-standing 1/2 barrier and achieves a competitive ratio of at least 0.5086. In light of the hardness result of Kapralov, Post, and Vondrák (SODA 2013), which restricts beating a 1/2 competitive ratio for the more general monotone submodular welfare maximization problem, our result can be seen as strong evidence that edge-weighted bipartite matching is strictly easier than submodular welfare maximization in an online setting.

The main ingredient in our online matching algorithm is a novel subroutine called
online correlated selection
(OCS), which takes a sequence of pairs of vertices as input and selects one vertex from each pair. Instead of using a fresh random bit to choose a vertex from each pair, the OCS negatively correlates decisions across different pairs and provides a quantitative measure on the level of correlation. We believe our OCS technique is of independent interest and will find further applications in other online optimization problems.
Predictive Modeling of Short-Term Poor Prognosis of Successful Reperfusion after Endovascular Treatment in Patients with Anterior Circulation Acute Ischemic Stroke
Authors: Zhang Zhuo , Song Cheng , Zhang Li , Yang Weimin 
Published: August 2022

This study aimed to propose and internally validate a prediction model of short-term poor prognosis in patients with acute ischemic stroke (AIS). In the retrospective study, 356 eligible AIS patients receiving endovascular treatment (EVT) were included and divided into the good prognosis group and the poor prognosis group. Data from 70% of patients were collected as training set and the 30% as validation set. Univariate analysis and multivariate logistic regression were used for identifying independent predictors. The performance of the model was evaluated by receiver operating characteristic (ROC) curve and the paired Chi-square test was used for internal validation. A model for the prediction of short-term poor prognosis in atherosclerotic AIS patients who successfully underwent endovascular reperfusion was developed: log (Pr/1 − Pr) = 3.500 + Blood glucose

∗

0.174 + Infarct volume

∗

0.128 + the National Institutes of Health Stroke Scale score × Onset-to-reperfusion time (NIHSS-ORT)

∗

0.014 + Intraoperative hypotension (Yes)

∗

1.037 + Mean arterial pressure (MAP) decrease from baseline (>40%)

∗

2.061 (Pr represented the probability of short-term poor prognosis). The area under the curve (AUC) was 0.806 (0.748 − 0.864) in the training set and 0.850 (0.779 − 0.920) in the testing set, which suggested the good performance of the model. We proposed and validated a combined prediction model to predict the short-term poor prognosis of AIS patients after EVT, which could provide reference for clinicians to identify AIS patients with a higher risk of poor outcomes and thus improving the prognosis of EVT.
What Prospective Applicants Look for on Otolaryngology Residency Websites
Authors: DiNardo Lauren A. , Reese Alyssa D. , Seeley Jeffrey , Carr Michele M. 
Published: August 2022

Objective: To determine what prospective residency applicants look for on otolaryngology residency program websites. Study Design: Survey. Setting: The survey was distributed in a virtual format through Google Forms. A link to the survey was given at the University at Buffalo Otolaryngology Chautauqua, sent to Otolaryngology program directors with requests to forward to PGY1 residents and Otolaryngology interest groups, sent to medical school Otolaryngology interest group leaders, posted on Twitter through several accounts, and on otomatch.com Methods: A 45 item survey was given to fourth year medical students applying to otolaryngology, re-applicants applying to otolaryngology, and first year otolaryngology residents who had recently matched. Data collected included participant’s age, sex, race and ethnicity, current status in school/residency program, and their type of medical degree (MD or DO). Participants were then asked to mark the components listed that they wished to see. Components were separated into 5 categories: Application/Selection Criteria, Employment Aspects, Program Features, Social/Community, and Faculty/Contact Information. Data was analyzed using Mann-Whitney and Kruskal Wallis tests when appropriate. P value <.05 was considered statistically significant. Results: One hundred one surveys were collected. Sixty-four (63.4%) participants were fourth-year medical students, 32 (31.7%) were first-year residents, and 5 (5.0%) were re-applicants. Thirteen of the items on the survey were sought by 80% or more of respondents. Ninety-nine (98.0%) of the participants wanted to see a current resident list with photos and 97 (96.0%) wanted to see the intern year schedule online. Eighty-five percent agreed that salary and benefits information would be valuable on residency websites. Women expressed significantly more interest in salary ( P = .034), benefits ( P = .026), and parking information ( P = .048). Conclusion: Our study provides insight on key items to include on residency program websites. Websites that contain information that applicants want to use can be helpful for application decisions in the future.