bluuebunny/crossref_metadata_2025_split huggingface dataset:
VARIABILITY OF THE SWEET CHESTNUT (Castanea sativa Mill.) BASED ON THE MORPHOLOGICAL PROPERTIES OF THE LEAF IN NATURAL POPULATIONS OF BOSANSKA KRAJINA
Authors: Mujagić-Pašić Aida , Ballian Dalibor 
Published: January 2022

UDK 582.632.2:581.45(497.6 Bosanska krajina)
An analysis of the morphological properties of the sweet chestnut (Castanea sativa Mill.) leaves has identified the presence of an intra-population and inter-population variability of the sweet chestnut. The material has been collected from 16 subpopulations in the region of Bosanska Krajina (Cazin, Bužim, and Velika Kladuša) and amounted to 4,380 leaves of equal dimensions. Their morphological features – blade length in mm (ŠPL), blade width in mm (DPL) and petiole length in mm (DPE) – have been measured. The shape of leaf base and depth of indentations of leaf edges have been established according to the descriptor for the sweet chestnut (UPOV 1989), while the ratios have been calculated based on the known values: leaf blade length/leaf blade width (ŠPL/DPL) and leaf blade width/total leaf length (ŠPL/UDL).
The purpose of this research is to establish intra-population and inter-population variability of the natural sweet chestnut populations in the region of Bosanska Krajina on the basis of leaf morphology.
PHENOLIC CONTENT AND ANTIOXIDANT ACTIVITY OF CRATAEGUS MONOGYNA L. FRUIT EXTRACTS
Authors: Tahirović Azra , Bašić Neđad 
Published: January 2022

UDK: 547.56:582.711.714
582.711.714:581.47
The aim of this work was to determine the content of total polyphenols, total flavonoids, total monomeric anthocyanins, total proanthocyanidins, and antioxidant activity of Crataegus monogyna L. fruit in water, hydroalcohol and alcohol extracts. Phenolic content and antioxidant assay of the different fruit extracts was determined using spectrophotometric methods. Obtained results indicated that the content of total polyphenols in the investigated extracts varied from 2.01 to 4.60 mg GAE g-1 of fresh hawthorn fruit. The content of flavonoids ranged from 0.254 to 0.595 mg RUE g-1 fresh fruit extracts. Total monomeric anthocyanins varied from 0.004 to 0.132 mg cyanidin-3-glucoside g-1 of fresh fruit and total proanthocyanidins varied from 0.187 to 1.168 mg cyanidin chloride g-1 fresh fruit. The best antioxidant activity was obtained for hawthorn extract with 80% methanol. A good correlation between antioxidant activity and total polyphenols (R² = 0.9473) and proanthocyanidins (R² = 0.7469) was observed.
DETERMINATION OF PHENOLIC CONTENT AND ANTIOXIDANT ACTIVITY OF ROSA CANINA L. FRUITS IN DIFFERENT EXTRACTION SYSTEMS
Authors: Tahirović Azra , Bašić Neđad 
Published: January 2022

UDK: 582.711.71:547.56
Phenolic content and antioxidant activity of Rosa canina fruit extracts obtained with five different extraction systems were investigated. Extractions were done with water, and aqueous 50% methanol, 50% ethanol, 80% methanol and 80% ethanol. Antioxidant activity was investigated with DPPH, ABTS and FRAP methods using Trolox as a standard. The highest level of phenols (78.83 mg GAE/g), phenolic acids (11.21 mg CAE/g), and proanthocyanidins (29.12 mg CE/g) were found for 50% methanol extract. The highest flavonoid content (1.163 mg RE/g and 0.675 mg QE/g) was determined for 50% ethanol extracts and antocyanin content (0.139 mg CGE/g) for 80% methanol extract. The lowest level of phenols (35.89 mg GAE/g), phenolic acids (4.55 mg CAE/g) and proanthocyanidins (11.93 mg CE/g) had 80% ethanol extract. Flavonoid content (0.341 mg RE/g and 0.214 mg QE/g) was the lowest in water extract and anthocyanidin content (11.93 mg CE/g) in 50% ethanol extract. Antioxidant activity for DPPH was in a range 255.62-407.82 µmol TE/g, for ABTS 312.06-616.10 µmol TE/g and for FRAP 349.33-690.37 µmol TE/g with lowest values for 80% ethanol extract and highest values for 50% methanol extract. Phenols and proanthocyanidins showed high positive correlation with antioxidant activity for DPPH (r2 =0.927-0.9621), ABTS (r2 =0.980-0.9935) and FRAP (r2 =0.9352-0.9633). No correlation was observed for flavonoid and anthocyanidin content with antioxidant activity.
IMPACT OF SITE QUALITY AND SOME TAXATION ELEMENTS ON BEECH RED HEART FORMATION IN FOREST COMPARTMENTS 107. M.U. „GOSTELJA“ AND 47. M.U. „SREDNJA DRINJAČA“
Authors: Gurda Safet , Sokolović Dževada , Knežević Jelena , Hajdarević Seid , Avdibegović Jasmin 
Published: January 2022

UDK: 630*81:674.031.632.2(497.6 Kladanj)
582.632.2:674.038.17(497.6 Kladanj)
There are many factors that affect appearance and spreading of the red heart in beech stands. Therefore, this research presents an analysis of site quality class and taxation elements (diameter at the breast height, height of the tree and age of the tree) influence on the participation and distribution of the red heart in the forest compartments 107. M.U. „Gosteljaˮ - (II- quality class) and 47. M.U. „Srednja Drinjačaˮ - (III- quality class). The appearance of the red heart on the beech trees considering on the site quality class was researched, as well as the red heart appearance frequency in dependence on the tree diameter at the breast height and age of the tree, size and distribution of the red heart in the longitudinal and transverse direction. The results of research showed that the number of trees with the red heart and the length of the technical roundwood with the red heart increase with increase of diameter at the breast height (age of the tree). As well, it was established that the appearance frequency of the trees with red heart considering the diameter at the breast height (the age of the tree) was larger on the stands belonging low quality site classes. The site quality class affects the distribution of the red heart at the thicker beech trees in the longitudinal direction, while at the thinner and trees of medium diameter, the influence of site quality class on the distribution of the red heart is not expressed in great extent. Larger diameters of the red heart in average have beech trees on the low quality site classes.
Quality of Life in the Swedish General Population During COVID-19 - Based on pre- and post-pandemic outbreak measurement
Authors: Persson Ulf , Olofsson Sara , Gu Ning Yan , Gong Cynthia L. , Jiao Xiayu , Hay Joel W. 
Published: January 2022

The outbreak of the pandemic COVID-19 (Coronavirus) has resulted in various international and national strategies, including non-pharmaceutical interventions (NPIs) such as social distancing and travel bans, which have purportedly mitigated the health loss due to the pandemic but also given rise to a severe economic crisis. Both factors, the pandemic and the NPIs, can be expected to have an impact on the Health-Related Quality-of-Life (HRQoL) of the population. The objective of this study was to estimate the impact on HRQoL of the Swedish adult population during the outbreak of the COVID-19 pandemic. A web-based survey was sent to randomised samples of the adult Swedish population before the outbreak of the pandemic in Sweden in February 2020 (n=1,016) and during the outbreak of the pandemic. The first wave pandemic data was collected in April 2020 (n=1,003), one-month after the outbreak and, the second wave data was collected in January 2021 (n=1,013), after 10-months living under the pandemic. HRQoL was measured using the EQ-5D-5L in the pandemic surveys, whereas the Visual Analogue Scale (VAS) was used in all surveys. The results suggested a reduction in average HRQoL as measured by VAS in the adult Swedish population, with 0.059 points reduction in VAS in April 2020 and 0.074 points reduction in January 2021, compared to the pre-pandemic measurement in February 2020. The loss in HRQoL was significant among respondents in the working age population (<65 years), suggesting that the social and economic impact of NPIs were the primary drivers for this specific cohort. Findings of this study supports a wide public health perspective and future HRQoL measurements at the population level throughout the pandemic.
Published: Online September 2021
Libidinosa amor. Sobre algunes fonts llatines en Lo somni
Authors: Gros Llardós Sònia 
Published: January 2022

Resum: En aquest treball s’exploren algunes referències dels llibres III i IV de Lo somni al voltant de «l’amor de fembres» i els efectes perniciosos de la luxúria immoderada, des de la perspectiva de les fonts llatines emprades en el text català. L’anàlisi de la reutilització metgiana d’algunes fonts permet examinar els recursos formals de la seva escriptura, així com aprofundir en les relacions de Metge amb els textos clàssics i italians. Lo somni evidencia una nova perspectiva literària i una clara actitud filògina en l’estela de les relectures que els grans mestres del Trecento, Petrarca i Boccaccio, havien realitzat de clàssics llatins com Valeri Màxim. Paraules clau: Bernat Metge, Lo somni, Petrarca, Boccaccio, Valeri Màxim.Abstract: This paper explores some references in books III and IV of Lo somni on the question about «l’amor de fembres» and the pernicious effects of immoderated lust, from the perspective of the Latin sources used in the Catalan text. The analysis of Metge’s reuse of some sources allows to examine the formal resources of his writing, as well as to delve into the connections of Bernat Metge with classical and Italian texts. Lo somni shows a new literary perspective and a clear philogynist attitude imitating the re-readings that the great masters of Trecento, Petrarch and Boccaccio, had made of Latin classics such as Valerius Maximus. Keywords: Bernat Metge, Lo somni, Petrarch, Boccaccio, Valerius Maximus.
Effectiveness of interactive teaching intervention on medical students’ knowledge and attitudes toward stem cells, their therapeutic uses, and potential research applications
Authors: Abdulrazeq Fayez , Kheirallah Khalid A. , Al-Mistarehi Abdel-Hameed , Al Bashir Samir , ALQudah Mohammad A. , Alzoubi Abdallah , Alsulaiman Jomana , Al Zoubi Mazhar S. , Al-Maamari Abdulwahab 
Published: January 2022

Background
Stem cell science is rapidly developing with the potential to alleviate many non-treatable diseases. Medical students, as future physicians, should be equipped with the proper knowledge and attitude regarding this hopeful field. Interactive teaching, whereby the teachers actively involve the students in the learning process, is a promising approach to improve their interest, knowledge, and team spirit. This study aims to evaluate the effectiveness of an interactive teaching intervention on medical students’ knowledge and attitudes about stem cell research and therapy.

Methods
A pre-post test study design was employed. A six-session interactive teaching course was conducted for a duration of six weeks as an intervention. Pre- and post-intervention surveys were used. The differences in the mean scores of students’ knowledge and attitudes were examined using paired t-test, while gender differences were examined using an independent t-test.

Results
Out of 71 sixth-year medical students from different nationalities invited to participate in this study, the interactive teaching course was initiated by 58 students resulting in a participation rate of 81.7%. Out of 58 students, 48 (82.8%) completed the entire course. The mean age (standard deviation) of students was 24 (1.2) years, and 32 (66.7%) were males. The results showed poor knowledge about stem cells among the medical students in the pre-intervention phase. Total scores of stem cell-related knowledge and attitudes significantly improved post-intervention. Gender differences in knowledge and attitudes scores were not statistically significant post-intervention.

Conclusions
Integrating stem cell science into medical curricula coupled with interactive learning approaches effectively increased students’ knowledge about recent advances in stem cell research and therapy and improved attitudes toward stem cell research and applications.
sTWEAK is a leukoaraiosis biomarker associated with neurovascular angiopathy
Authors: da Silva‐Candal Andrés , Custodia Antia , López‐Dequidt Iria , Rodríguez‐Yáñez Manuel , Alonso‐Alonso Maria Luz , Ávila‐Gómez Paulo , Pumar José M. , Castillo José , Sobrino Tomás , Campos Francisco , Iglesias‐Rey Ramón , Hervella Pablo 
Published: January 2022

AbstractObjectiveLeukoaraiosis (LA) refers to white matter lesions of undetermined etiology associated with the appearance and worsening of vascular pathologies. The aim is to confirm an increased frequency and intensity of LA in symptomatic patients with neurovascular pathology compared with asymptomatic subjects, and its association with circulating serum levels of soluble tumor necrosis factor‐like weak inducer of apoptosis (sTWEAK).MethodsAn observational study was conducted in which two groups of patients were compared. Group I (N = 242) comprised of asymptomatic subjects with arterial hypertension and/or diabetes or with a history of transient ischemic attacks, and Group II (N = 382) comprised patients with lacunar stroke or deep hemispheric intracerebral hemorrhage (ICH) of hypertensive origin. Serum levels of sTWEAK were analyzed and correlated with prevalence and intensity of LA according to the Fazekas scale.ResultsThe prevalence of LA was higher in symptomatic (85.1%) versus asymptomatic patients (62.0%). Logistic regression model showed a significant relation of LA with neurovascular pathologies (OR: 2.69, IC 95%: 1.10–6.59, p = 0.003). When stratified according to the Fazekas scale, LA of grade II (OR: 3.53, IC 95%: 1.10–6.59, p = 0.003) and specially grade III (OR: 4.66, 95% CI: 1.09–19.84, p = 0.037) showed correlation with neurovascular pathologies. Increased sTWEAK levels were found in the symptomatic group in all LA grades (p < 0.0001), and associated with 5.06 times more risk of presenting clinical symptoms (OR: 5.06, 95% CI: 2.66–9.75, p < 0.0001).InterpretationLA showed a higher prevalence in patients with symptomatic lacunar stroke or deep hemispheric ICH. There is an association between sTWEAK levels and LA degree.
Monolithic Perovskite‐Silicon Tandem Solar Cells: From the Lab to Fab?
Authors: Fu Fan , Li Jia , Yang Terry Chien‐Jen , Liang Haoming , Faes Antonin , Jeangros Quentin , Ballif Christophe , Hou Yi 
Published: January 2022

AbstractThis review focuses on monolithic 2‐terminal perovskite‐silicon tandem solar cells and discusses key scientific and technological challenges to address in view of an industrial implementation of this technology. The authors start by examining the different crystalline silicon (c‐Si) technologies suitable for pairing with perovskites, followed by reviewing recent developments in the field of monolithic 2‐terminal perovskite‐silicon tandems. Factors limiting the power conversion efficiency of these tandem devices are then evaluated, before discussing pathways to achieve an efficiency of >32%, a value that small‐scale devices will likely need to achieve to make tandems competitive. Aspects related to the upscaling of these device active areas to industry‐relevant ones are reviewed, followed by a short discussion on module integration aspects. The review then focuses on stability issues, likely the most challenging task that will eventually determine the economic viability of this technology. The final part of this review discusses alternative monolithic perovskite‐silicon tandem designs. Finally, key areas of research that should be addressed to bring this technology from the lab to the fab are highlighted.
A multistage Gompertz life‐cycle model applied to threatened Chinook salmon
Authors: Hinrichsen Richard A. , Paulsen Charles M. 
Published: January 2022

AbstractBecause the Gompertz model has a long history of use as a population model, we analyzed its properties as a multistage stock‐recruitment model. We found that if a life‐cycle model is a sequence of linked Gompertz stock‐recruitment models at each life stage, then it is also a Gompertz stock‐recruitment model. This is similar to the well‐known result for the Beverton–Holt stock‐recruitment model. The Gompertz model is guaranteed to yield least squares estimates and therefore, can offer a distinct advantage over the Beverton–Holt model, which cannot be fit using linear regression and may not yield valid maximum likelihood estimates. We illustrate the use of this multistage modelling framework by applying it to Snake River spring/summer Chinook salmon (Oncorhynchus tshawytscha). We found that the Gompertz model fit the data better than the Beverton–Holt Model, and yielded similar carrying capacity estimates for both juveniles and adults. Past work by others on these populations has usually assumed that parr‐to‐adult survival is density independent. However, we found that this assumption may be incorrect: when we applied two‐stage models to these populations, we found density dependence at the juvenile‐to‐adult stage. This suggests that life‐cycle modelling to date has been overly optimistic about the benefits of survival rate increases in the hydro‐system and elsewhere to improve the viability of salmon populations threatened with high extinction risk.
The impact of cultivar development and cultural practices on Louisiana rice yield
Authors: Kennedy P. Lynn , Schmitz Andrew , Linscombe Steve , Zhang Fangyi 
Published: January 2022

AbstractThis analysis investigates the impact of cultivar development and cultural practices on Louisiana rice (Oryza sativa L.) yield growth using the Chow test (Chow, 1960) in combination with regression analysis. The analysis examines the 1895–2019 period, and uses four scenarios in which one, two, three, and four subperiods show varying rates of rice yield growth in Louisiana. There has been a significant increase in Louisiana rice yields over time. However, the growth in yields for some of the subperiods is greater than for others. Our results of significant rice yield increase over time correspond with events such as the establishment of Louisiana's Foundation Seed Program, the release of the Magnolia rice cultivar, and increased mechanization.
Synthesis of antibacterial polymer metal hybrids in irradiated poly‐1‐vinyl‐1,2,4‐triazole complexes with silver ions: pH tuning of nanoparticle sizes
Authors: Zezin Alexey , Danelyan Gurgen , Emel'yanov Artem , Zharikov Alexey , Prozorova Galina , Zezina Elena , Korzhova Svetlana , Fadeeva Tat'yana , Abramchuk Sergei , Shmakova Nina , Pozdnyakov Alexander 
Published: January 2022

AbstractPoly‐1‐vinyl‐1,2,4‐triazole (PVT)‐based materials with silver nanoparticles are promising antibacterial products. The metal nanoparticles with controllable sizes were obtained by radiation‐induced reduction of the dispersions of complexes of PVT with silver ions. Formation of the silver nanoparticles in aqueous suspensions irradiated at pH 6.0, 2.5, and 2.0 was studied using methods of UV–VIS spectroscopy and transmission electron microscopy. UV–VIS spectroscopy has detected a change in the efficiency of interaction between protonated or non‐protonated PVT units and the surface of silver nanoparticles. The interaction of macromolecules with the metal surface under different degrees of protonation of PVT functional groups afforded the nanoparticles with a narrow size distribution and an average size from 3 to 10 nm. An increase in the acidity also leads to a decrease in the ratio of the generation/growth of nanoparticles. The radiation approaches both provide the synthesis of the nanoparticles of controlled sizes and permits to obtain the nanocomposites containing no impurities of chemical reducing agents. The nanocomposites obtained exhibit high antibacterial activity against various bacterial strains, which depends on the size of silver nanoparticles.
Adaptive event‐triggered robust H∞ control for Takagi–Sugeno fuzzy networked Markov jump systems with time‐varying delay
Authors: Shamrooz Aslam Muhammad , Qaisar Irfan , Majid Abdul , Shamrooz Summera 
Published: January 2022

AbstractThis paper considers an adaptive event‐triggered robust H∞ control for the Takagi–Sugeno (T‐S) fuzzy under the networked Markov jump systems (NMJSs) with time‐varying delay. First, a new adaptive event‐triggered scheme is developed to guarantee the T‐S fuzzy NMJSs, and as a result, communication energy consumption reduced while device efficiency is maintained. Besides, an asynchronous operation method is adopted to deal with the mismatched premise variables between the fuzzy system and the fuzzy controller. One of the main objectives of this article is to construct the fuzzy state‐feedback controller (mode‐dependent) in a closed‐loop form for stochastic stability for all admissible parameter uncertainties with an H∞ performance index. Different from the conventional triggering mechanism, in this paper, the parameters of the triggering function are based on a new adaptive law that is obtained online rather than a predefined constant. To achieve the less conservative control design, a new type of stochastic Lyapunov–Krasovskii functional is designed by decomposing method, in which the delay interval transforms into various equidistant subintervals in terms of linear matrix inequalities. An example of a truck‐trailer application is used to demonstrate the effectively of the proposed algorithms.
Trust spillovers in the sharing economy: Does international Airbnb experience foster cross‐national trust?
Authors: Kas Judith , Delnoij Joyce , Corten Rense , Parigi Paolo 
Published: January 2022

AbstractSharing economy platforms commonly claim to bring about positive social impacts, such as facilitating contact between individuals that would not have met otherwise. According to contact theory, such intergroup contact would change the stereotypes that individuals hold of outgroup members, such as people with a different nationality or ethnicity. We use a large‐scale online Investment Game experiment among Airbnb users to study the effect of Airbnb interactions on cross‐national trust. In contrast with common claims about the positive impact of the sharing economy, we did not find that individuals who had prior experience with a nationality as a host or a guest on Airbnb trusted persons of that nationality more. This may be because monetization, institutionalization and professionalization of Airbnb limits the intensity of contact, or because Airbnb mostly establishes contact between individuals with similar backgrounds.
Chromium phosphide nanoparticles embedded in porous nitrogen‐/phosphorus‐doped carbon as efficient electrocatalysts for a nitrogen reduction reaction
Authors: Yu Jiayuan , Chang Bin , Yu Wanqiang , Li Xiao , Wang Dufu , Xu Zhinian , Zhang Xiaoli , Liu Hong , Zhou Weijia 
Published: January 2022

AbstractThe resource recovery of heavy metals from effluent has significant environmental implications and potential commercial value. Chromium phosphide nanoparticles embedded in a nitrogen‐/phosphorus‐doped porous carbon matrix (CrP/NPC) are synthesized via a consecutive Cr6+ leachate treatment and resource recovery process. Electrochemical testing shows that CrP/NPC shows excellent nitrogen reduction reaction (NRR) performance, which yields the highest NH3 production rate of 22.56 μg h−1 mg−1cat. and Faradaic efficiency (16.37%) at −0.5 V versus the reversible hydrogen electrode in a 0.05 M Na2SO4 aqueous solution, as well as robust catalytic stability. The isotopic experiments using 15N2 as a nitrogen source confirm that the detected NH3 is derived from the NRR process. Finally, density functional theory (DFT) calculations show that the electron deficiency environment of the Cr site can significantly reduce the barrier of the NRR process and promote the formation of intermediate species.