bluuebunny/crossref_metadata_2025_split huggingface dataset:
Structural and functional changes of the heart in chronic heart failure with preserved left ventricular ejection fraction with excess body weight depending on the presence and form of atrial fibrillation
Authors: Bidzilya P. P. , Kadzharian V. H. 
Published: September 2021

The aim. To examine the features of structural and functional changes of the heart in patients with chronic heart failure with preserved left ventricular ejection fraction (CHF pr EF) with excess body weight depending on the presence and form of atrial fibrillation (AF).
Materials and methods. The study involved 248 patients with CHF pr EF and excess body weight, the mean age was 65.0 ± 11.0 years, 146 females (58.9 %) and 102 males (41.1 %). The first group included 181 patients without concomitant AF, the mean age was 64.0 ± 11.0 years, 110 females (60.8 %) and 71 males (39.2 %); the second group included 67 patients with AF, the mean age was 67.9 ± 11.3 years, 36 females (53.7 %) and 31 males (46.3 %). Subjects with AF were further divided into subgroups: 7 patients with paroxysmal AF, the mean age – 6.7 ± 10.4 years, 3 females (42.9 %) and 4 males (57.1 %), 12 patients with persistent AF, the mean age – 70.8 ± 10.3 years, 10 females (83.3 %) and 2 males (16.7 %); 48 patients with permanent AF, the mean age – 67.3 ± 11.7 years, 23 females (47.9 %) and 25 males (52.1 %).
Results. Patients with concomitant AF had a significantly larger aorta diameter (by 3.0 %), systolic left atrium size (LAs) (by 14.5 %), right atrium size (RA) (by 8.3 %), left ventricle end-diastolic size (LVEDS) (by 7.1 %), left ventricle end-systolic size (LVESS) (by 10.6 %), right ventricle size (RV) (by 13,1 %), mean pulmonary artery pressure (by 20.0 %) and the prevalence of LV eccentric hypertrophy (by 21.0 %; P ˂ 0.001). At the same time, LV wall relative thickness (LV RT) was lower by 6.3 %, LV EF – by 3.4 % and the frequency of LV concentric hypertrophy – by 19.1 % (P ˂ 0.001). In permanent form of AF compared to paroxysmal one, significantly larger LAs (by 10.6 %), RA (by 10.9 %), LV myocardial mass (LV MM) (by 18.1 %) and LV MM index (by 21.1 %) were determined and in contrast to persistent AF, LAs (by 9.8 %), RA (by 11.4 %), LVEDS (by 15.6 %), LVESS (by 15.8 %), RV (by 27, 9 %), LV MM (by 29.8 %), LV MMI (by 14.9 %) were predominant, at the same, LVRT was 12.8 % less.
Conclusions. In patients with CHF pr EF and excess body weight, concomitant AF is associated with greater dilatation of the heart cavities, eccentric hypertrophy predominance, decreased LV contractility and pulmonary hypertension. Compared to other forms, permanent AF is characterized by severe structural and functional changes in the heart, maximal manifestations of LV dilatation and hypertrophy.
Interdisciplinary approach to surgical treatment for patients with hypertrophic obstructive cardiomyopathy
Authors: Rudenko K. V. , Nevmerzhytska L. O. , Kozhanov M. V. , Tregubova M. О. , Danchenko P. А. 
Published: September 2021

Hypertrophic cardiomyopathy (HCM) – is the most common genetically determined heart disease, characterized by symmetrical or asymmetrical myocardial thickening (≥15 mm), leading to progressive heart failure and a high risk of sudden cardiac death (SCD).
Diagnosis, natural course and treatment of HCM have become sources of uncertainty, misunderstanding and debate due to the increasing complexity of diagnosis in clinical practice, international differences in strategic approaches, advances in the treatment of genetic diseases and cardiac imaging.
The aim. To amplify the current concept of HCM pathogenesis and mechanisms of the left ventricular outflow tract (LVOT) obstruction as well as to highlight our own results of HCM surgical correction.
Materials and methods. A total of 330 HCM patients underwent surgical correction (septal myectomy) in the National M. Amosov Institute of Cardiovascular Surgery affiliated to National Academy of Medical Sciences of Ukraine. The mean age of the patients was 49.7 ± 15.0 years, median – 53; 168 (50.9 %) were male.
Results. Surgical correction of HCM significantly improves the quality of life (80 % of patients were in NYHA II functional class after correction), reduces the symptoms of heart failure (93 % of patients had minimal mitral regurgitation after septal myectomy), decreases LVOT systolic pressure gradient (SPG) (the mean SPG was 18.9 ± 8.5 mmHg versus preoperative 93.6 ± 23.2 mmHg) and lowers the high-risk for SCD in the patients (the mean percentage of high-risk group was 3.78 % after correction).
Routine CT planning and intraoperative transesophageal echocardiography helps to avoid severe iatrogenic complications and resect the interventricular septum as accurately as possible, completely eliminating LVOT obstruction.
Conclusions. Secondary abnormal chordal attachment cutting, papillary muscle realignment and anterior mitral leaflet plication along with septal myectomy allows to fully correct all phenotype of HCM, is the safe and effective procedure as well as the definitive method of this pathology treatment minimizing the risk of disease recurrence.
Determination of comorbidity index for high-risk patients with coronary artery disease before cardiac surgery
Authors: Gogayeva О. К. 
Published: September 2021

The aim: to determine the comorbidity index before cardiac surgery in high-risk patients with coronary artery disease (CAD).
Materials and methods. A retrospective analysis of data from 354 random high-risk patients who underwent a surgery and were discharged from National M. Amosov Institute of Cardiovascular Surgery affiliated to National Academy of Medical Sciences of Ukraine during the period 2009–2019. The mean age of patients was 61.9 ± 9.6 years. All the patients were examined: ECG, ECHO CG, coronary angiography before the surgery as well as Charlson comorbidity index was calculated and a risk on the scales EuroSCORE I, EuroSCORE II and STS was stratified.
Results. I–III degree obesity was revealed in 133 (37.5 %) patients, patients with type 2 diabetes mellitus (DM) were more likely to have BMI >30 kg/m2 (P = 0.017). Patients with normal weight had a carotid artery stenosis >50 % (P = 0.014) and history of stroke (P = 0.043) significantly more frequently. No differences in comorbidity of overweight and normal weight patients were detected (5.73 ± 1.70 vs. 5.9 ± 1.8, P = 0.4638). Type 2 DM was diagnosed in 90 (25.4 %) patients. In the case of normoglycemia, the comorbidity index was significantly lower than in type 2 DM (4.88 ± 1.38 vs. 6.60 ± 2.03, P = 0.0001) and glucose intolerance 5.8 ± 1.5 (P < 0.0001). Chronic kidney disease (CKD) G3a–G4 stages was diagnosed in 132 (37.2 %) patients. Significant higher comorbidity was found in patients with G3a–G4 stages CKD in comparison to those with G1–G2 stages CKD – 6.33 ± 1.78 vs. 5.46 ± 1.60 (P < 0.0001). Among comorbidities in patients with gouty arthritis, type 2 DM (P < 0.0001), obesity (P = 0.0080), CKD G3a–G4 (P = 0.0020) and varicose veins of the lower extremities (P = 0.0214) were significantly more common. Preoperative risk stratification according to the EuroSCORE II scale averaged 8.8 %.
Conclusions. Preoperative analysis of baseline status in CAD patients showed the high Charlson comorbidity index, which averaged 5.7 ± 1.7. The weak direct correlation between the comorbidity index and the high predicted cardiac risk on the ES II scale (r = 0.2356, P = 0.00001), length of stay in the intensive care unit (r = 0.1182, P = 0.0262) and discharge after the surgery (r = 0.1134, P = 0.0330) was found.
Liouville theorems and elliptic gradient estimates for a nonlinear parabolic equation involving the Witten Laplacian
Authors: Taheri Ali 
Published: September 2021

Abstract
In this paper, we establish local and global elliptic type gradient estimates for a nonlinear parabolic equation on a smooth metric
measure space whose underlying metric and potential satisfy a

(
k
,
m
)

{(k,m)}

-super Perelman–Ricci flow inequality. We discuss a number
of applications and implications including curvature free global estimates and some constancy and Liouville type results.
Aristotle’s First Moves Regarding Perception: A Reading of (most of)De Anima 2.5
Authors: Anagnostopoulos Andreas 
Published: September 2021

AbstractWhereas scholars often look toDe Anima2.5 to support one or another understanding of the sense in which perception, for Aristotle, qualifies as an alteration and qualitative assimilation to the sense-object, I ask the more basic question of what the chapter is meant to establish or accomplish with respect to the question whether perception is an alteration. I argue that the chapter does not presuppose or legitimate the view that perception is an alteration where it is thought to, and that it is meant rather to challenge that view, most importantly, by putting its argumentative weight behind a different model of perception, leading to a kind of antinomy. What stands in the way of understanding perception as an alteration (and assimilation to the sense-object), in this chapter, is ultimately the lack of an account of perceiving a quality as having that quality.
Diachronie der Zukunft
Authors: Hartmann Stefan 
Published: September 2021

AbstractBased on the Reference Corpus of Middle High German (REM) and the Bonn Early New High German Corpus (FnhdC), this paper investigates the development of the German future constructionwerden + Infinitive as well as constructions that are often seen as its predecessors and/or competitors. The paper focuses on the constructionwerden + Present Participle but also takes modal verb constructions withmögen, müssen, sollen, andwolleninto account. A semantic analysis of the dependent verbs occurring in the constructions with regard to their aspectual characteristics reveals thatwerden + Infinitive andwerden + Present Participle undergo parallel developments that can be seen as context expansion from a grammaticalization-theoretical perspective. The modal verb constructions, by contrast, remain stable with regard to the aspectual semantics of their dependent verbs. Furthermore, it is argued that, following recent theoretical approaches from diachronic Construction Grammar, the complex relationship betweenwerden + Infinitive andwerden + Participle can be modelled as ›attraction‹ or contamination between different constructions.
Prolegomena zu einer neuen mittelhochdeutschen Metrik
Authors: Estis Alexander 
Published: September 2021

Abstract
The purpose of this paper is to criticize established doctrines in the field of metrical analysis of Middle High German verse by incriminating ‒ especially from a methodological view ‒ the inconsistency and arbitrarity of traditional scansion instruments. Thus, broad descriptive research on prosodic regularities, which a new metric theory of Middle High German verse could build upon, is shown to be a desideratum.
Serre–Tate theory for Calabi–Yau varieties
Authors: Achinger Piotr , Zdanowicz Maciej 
Published: September 2021

Abstract
Classical Serre–Tate theory describes deformations of ordinary abelian varieties. It implies that every such variety has a canonical lift to characteristic zero and equips the base of its universal deformation with a Frobenius lifting and canonical multiplicative coordinates. A variant of this theory has been obtained for ordinary K3 surfaces by Nygaard and Ogus.
In this paper, we construct canonical liftings modulo

p
2

{p^{2}}

of varieties with trivial canonical class which are ordinary in the weak sense that the Frobenius acts bijectively on the top cohomology of the structure sheaf. Consequently, we obtain a Frobenius lifting on the moduli space of such varieties. The quite explicit construction uses Frobenius splittings and a relative version of Witt vectors of length two. If the variety has unobstructed deformations and bijective first higher Hasse–Witt operation, the Frobenius lifting gives rise to canonical coordinates. One of the key features of our liftings is that the crystalline Frobenius preserves the Hodge filtration.
We also extend Nygaard’s approach from K3 surfaces to higher dimensions, and show that no non-trivial families of such varieties exist over simply connected bases with no global one-forms.
A note on the validity of the Schrödinger approximation for the Helmholtz equation
Authors: Wörner Maximilian , Schneider Guido 
Published: September 2021

Abstract
Time-harmonic electromagnetic waves in vacuum
are described by the Helmholtz equation

Δ
⁢
u

+

ω
2

⁢
u

=
0

for
⁢

(
x
,
y
,
z
)

∈

ℝ
3

.

\Delta u+\omega^{2}u=0\quad\text{for }(x,y,z)\in{\mathbb{R}}^{3}.

For the evolution of such waves along the z-axis, a Schrödinger equation can be
derived through a multiple scaling ansatz. It is the purpose of this paper
to justify this formal approximation by proving bounds between this formal approximation
and true solutions of the original system.
The challenge of the presented validity analysis is the fact that the Helmholtz
equation is ill-posed as an evolutionary system along the z-axis.
ChinaCALL in retrospect and prospect: opening a welcome window to the World’s CALLs
Authors: Gu Yueguo 
Published: September 2021

AbstractThis paper, while sending a welcome message to the world’s CALL communities, presents a historical and developmental review of Chinese practices of educational technologies and ChinaCALL in particular. The review covers topics including the birth and concept of ChinaCALL, ChinaCALL’s pre-CALL heritage, pre-Web ChinaCALL, ChinaCALL in the new millennium, IBOE as a case study of ChinaCALL, and ChinaCALL in prospect. Also discussed are Chinese perceptions of educational technologies occurring at the macro, the meso and ground levels. On the ground level, technology consumers are characterized in terms of pen-pencil conservatives, AV natives, AV-CALL immigrants, CALL natives and CALL standby observers.
Predictive value of WHO vs. IAP BMI charts for identification of metabolic risk in Indian children and adolescents
Authors: Oza Chirantap , Khadilkar Vaman , Gondhalekar Ketan , Kajale Neha , Khadilkar Anuradha 
Published: September 2021

Abstract

Objectives
Owing to increase in prevalence of obesity and metabolic syndrome in Indian children and adolescents, this study is conducted to assess the predictive value of IAP 2015 and WHO 2007 BMI for age cut-offs in identifying metabolic risk in Indian children.

Methods
Cross-sectional multicentric school-based study on 9–18-year-old healthy children (n=1,418) randomly selected from three states of India.

Results
WHO 2007 and IAP 2015 charts classified 222 (15.7%) and 271 (19.1%) as overweight/obese, respectively. A total of 192 (13.5%) subjects had metabolic risk. Of these 47 (25%) and 36 (18.75%) were classified as having normal body mass index (BMI) by WHO and IAP, respectively. In identifying metabolic risk, IAP 2015 and WHO 2007 charts showed a sensitivity of 81.3 and 75%, negative predictive value 96.5% as against 94.8%, positive predictive value 57.5 and 64.8%, and specificity of 89.7 and 91.6%, respectively.

Conclusions
Owing to obesity epidemic and high metabolic risk in Indians, IAP 2015 charts (as against the WHO 2007 references) which had a higher sensitivity in identifying metabolic risk may be more suitable in Indian children and adolescents.
Defence Spending and Economic Growth in South Africa: Evidence from Cointegration and Co-Feature Analysis
Authors: Saba Charles Shaaba 
Published: September 2021

AbstractThe paper revisits the causality relationship between defence spending and economic growth for South Africa during the period 1960–2018. The results of our estimation show that defence spending and economic growth are cointegrated and that there is bidirectional Granger causality running between defence spending and economic growth in the long run. We then applied a Hodrick-Prescott filter to decompose the trend and the fluctuation components of the defence spending and economic growth series. The findings from the autoregressive distributed lag bounds test estimations show that in the long- and short-run, the trends and cyclicality of defence spending retard economic growth. The estimation results show that there is cointegration between the trends and the cyclical components of the two series, which suggests that the Granger causality possibly relates to the business cycle. This study suggests that investing more and reducing inefficiency spending in the defence sector during fluctuations can further stimulate economic growth in South Africa.
Investigation of effect of atomization performance on lean blowout limit for gas turbine combustors by comparison of utilizing aviation kerosene and methane as fuel
Authors: Sun Lei , Huang Yong , Liu Zhilin , Wang Shaolin , Guo Xiaobo 
Published: September 2021

Abstract
The lean blowout (LBO) limit is crucial for gas turbine combustor in the aero engine. The effect of atomization of liquid fuels on the LBO limit is needed to be further studied. On the other hand, the effects of atomization on the LBO limit can be neglected if gas fuels are utilized in a combustor. Thus, the comparative experiment between liquid fuel and gas fuel can be utilized to study the effects of atomization performance of liquid fuels on the LBO limit. In this paper, the LBO limit for a gas turbine combustor utilizing methane is studied experimentally. Seven kinds of combustor configurations are chosen for the experimental test. The LBO limits are obtained for all the chosen combustors. The variation of the LBO limit with the combustor configuration for both methane and aviation kerosene exhibits the similar tendency, i.e., the LBO limits utilizing methane are slightly larger than those utilizing aviation kerosene for the same combustor. Further, the atomization performance has little effects on the LBO limits for the present combustor configurations at the present operating conditions where the SMD for the fuel atomizer utilizing aviation kerosene is about 10 μm.
How Old is the Hebrew Bible? A Response to Konrad Schmid
Authors: Hendel Ronald 
Published: September 2021

Abstract
The methodological issues about how to integrate the linguistic history of Hebrew into our inquiries into the literary history of the Bible are complicated and controverted. In this contribution to the discussion, I attempt to clarify areas of agreement and disagreement, provide an example (Genesis 1–11) where some of the issues of integration of methods can be tested, and consider the relevant evidence for the emulation of classical Hebrew.
A New Etymology for Hebrew אֶלְגָּבִישׁ and Related Lexemes
Authors: Thambyrajah Jonathan 
Published: September 2021

Abstract
The Hebrew word אֶלְגָּבִישׁ has typically been understood as referring to hail. This presents a lexical problem, given that all of its apparent cognates appear to refer to rock. Based on a reanalysis of existing lexical data with the inclusion of new cognates and a new analysis of the imagery contained within Ezekiel 13 and Ezekiel 38, this study proposes that Hebrew אֶלְגָּבִישׁ, Akkadian algamešu, Ugaritic, a͗lgbṯ, Egyptian, i͗rḳbs, and other related words all derive from Egyptian i͗nr-km.
Antihemorrhagic and Antimicrobial Property of Cotton Fabric Treated with Medicinal Herb Alfalfa
Authors: Dhanapriya G. , Venkatesh B. , Gobinath R. , Prakash C. , Varadharaj R. , Mekala N. 
Published: September 2021

Abstract
In this work, medicinal plant alfalfa leaf extract was used as an antihemorrhagic, antimicrobial, and antifungal agent and applied to cotton fabrics. The medicinal herb alfalfa leaf was extracted using the ethanol and methanol solvents in the Soxhlet apparatus. The 50-µL, 100-µL, and 150-µL concentrations of extracted solution were tested against the positive and negative bacteria, namely Staphylococcus, Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, and the yeast fungi. The zone of inhibition was measured in each concentration. The 150-µL extract concentration in methanol extract showed good antibacterial activity against Staphylococcus and P. aeruginosa bacteria compared with the ethanol extract. The treated cotton fabrics were assessed for their antimicrobial property, and the zone of inhibition was found to be in the range of 13–15 mm. Then the antihemorrhagic property was assessed in both ethanol extract and methanol extract solution alone. The ethanol extracts showed a minimum time for clotting the blood, i.e., 2.2 min. The treated fabrics were assessed for the time taken to clot blood, and it was found that it took 1.2–1.4 min, which was improved when compared with the normal blood clotting time of 2–2.3 min. Biocompatibility Chorioallantoic membrane (CAM) preparation helps us to know the endpoints like hemorrhage, vascularlysis, coagulation, and irritation score of treated and untreated cotton fabric. The test is similar to the effects of the rabbit skin testing treatment, which shows the result of zero value for endpoints. The Medicago sativa herb exhibited good antimicrobial and antihemorrhagic properties for medicinal applications.
Effect of Graphene Enrichment on Solid Particle Erosion Performance of Electroless Ni-P Composite Coatings
Authors: Khan Rana Ahmad Raza , Li Zhi , Umer Jamal , Farhat Zoheir 
Published: September 2021

Abstract
Solid particle erosion (SPE) and dents (from contact loads) are among numerous surface degradations in the hydrocarbon industry that can in turn compromise the longevity of protective coatings. Both these degradation mechanisms can induce cracks that allow the corrosive solutions to seep through those cracks and corrode the underlying metal, thereby defeating the purpose of surface protection. Nickel-phosphorus (Ni-P) coatings have been known for decades for their corrosion resistance, but their applications in hydrocarbon industries are impeded by their tribological limitations, namely low wear resistance. In the current research work, graphene nanoplatelets were introduced to an Ni-P electroless plating bath in various concentrations (30 mg/L, 60 mg/L, and 100 mg/L) to achieve three different compositions of ternary Ni-P–graphene coatings, namely Ni-P-30 mg G, Ni-P-60 mg G, and Ni-P-100 mg G, respectively. Surface roughness was characterized via topography employing a laser confocal microscope. Coating hardness was characterized using Vickers hardness and the composition analyses were carried out via energy dispersive spectroscopy. SPE was conducted via Tungsten carbide (WC) erodent ball at three different impact angles and two different particle velocities. Finally, Hertzian indentation was performed under two different loads to characterize the denting behavior of coatings. Eroded and dented coatings were further visualized via an optical microscope. The highest concentration of graphene (by 18 vol.%) in Ni-P-30 mg G coating improved the hardness, leading to the smallest size of indents during both SPE and Hertzian indentation. Also, Ni-P-30 mg G exhibited no evidence of cracking under normal impact angle and particle velocities of 35 ms−1 and 52 ms−1.