bluuebunny/crossref_metadata_2025_split huggingface dataset:
Análisis de juego del principio de finalización en un equipo de fútbol de categoría infantil
Authors: López Caballero Pablo , Onetti-Onetti Wanesa , Giménez de los Galanes Aguirre Jesús Vicente , Castillo-Rodríguez Alfonso 
Published: June 2023

Children who play soccer in development age practice this sport to have fun, but in addition, they learn specific skills such as throwing a goal, which is the technique developed to score a goal. The objective of this study is to analyze the completion actions through throws in a high-level soccer team of the Children's category through observational educational methodology to locate problems in the game. They have obtained 20 high-level soccer players from the city of Granada. Basic descriptive statistics have been carried out. As a result, evidence has been obtained on the finishing actions that have not obtained a good sports performance such as the number of previous passes, defensive players involved, among other influential factors in the game. As a conclusion, a basic observation tool has been designed for the detection of real game problems, specifically, for those that end in shots on goal. The results allow children of development age to know relevant information on aspects of improvement and put it into practice with games using the problem-solving teaching methodology.
Los niños que juegan al fútbol en edad de desarrollo practican este deporte para divertirse, pero además, aprenden habilidades específicas como lanzar a portería que es la técnica desarrollada para marcar gol. El objetivo de este estudio es analizar las acciones de finalización a través de lanzamientos en un equipo de fútbol de alto nivel de categoría Infantil a través de metodología educativa observacional para localizar problemas en el juego. Han participado 20 jugadores de fútbol de alto nivel de la ciudad de Granada. Se ha realizado estadística básica descriptiva. Como resultados, se han obtenido evidencias sobre las acciones de finalización que no han obtenido un buen rendimiento deportivo como el número de pases previos, jugadores defensivos implicados, entre otros factores influyentes en el juego. Como conclusión, se ha diseñado una herramienta básica de observación para la detección de problemas reales de juego, concretamente, para aquellas que finalizan en lanzamientos a portería. Los resultados permiten a los niños en edad de desarrollo conocer información relevante sobre aspectos de mejora y llevarlos a la práctica con juegos utilizando la metodología de enseñanza de resolución de problemas.
Antropometría y habilidades acuáticas de los niños que asisten a la natación
Authors: Dias de Jesus Eduarda Eugenia , Sperandio Jessica , Faitarone Brasilino Fabricio , Cortes Morales Pedro Jorge 
Published: June 2023

The objective of this study is to analyze and compare anthropometric data and aquatic skills of children attending swimming lessons. 29 children participated, between 3 and 12 years old, enrolled in swimming classes. It was decided to determine the percentage of body fat (%BF) and the contents analyzed were: immersion, dorsal and ventral flotation, gliding and depth control. As for the BF% of the girls, all were at an "Optimal" level. However, it is possible to find boys generally classified in a health risk zone (p<0.02). A difference was observed in the results of aquatic skills, generating a positive score. It was concluded that according to the %BF of the boys, it is necessary to look for mechanisms to balance the %BF. When it comes to aquatic skills, the study shows that children are classified at a good level.
El objetivo de este estudio es analizar y comparar los datos antropométricos y las habilidades acuáticas de los niños que asisten a clases de natación. Participaron 29 niños, de entre 3 y 12 años, inscritos en clases de natación. Se optó por determinar el porcentaje de grasa corporal (%GC) y los contenidos analizados fueron: inmersión, flotación dorsal y ventral, deslizamiento y dominio de la profundidad. En cuanto al %GC de las chicas todas estaban en un nivel "Óptimo". Sin embargo, es posible encontrar chicos clasificados en general en una zona de riesgo para la salud (p<0,02). Se observó una diferencia en los resultados de las habilidades acuáticas, generando una puntuación positiva. Se concluyó que según él %GC de los chicos, es necesario buscar mecanismos para equilibrar él %GC. En lo que respecta a las habilidades acuáticas, el estudio muestra que los niños se clasifican en un buen nivel.
Det store afdans(k)ningsbal?
Authors: Marstal Henrik 
Published: June 2023

The Great (Danish) Dance Ball: Post-National Tendencies in Communal Singing
Since the 1990’s, social theorists have identified a number of so-called post-national tendencies which show how the concept of the nation-state have been challenged due to, among other things, the advert of globalization. The article argues that such tendencies have also affected the culture of communal singing in Denmark during the 21st century. Even though the act of singing national songs together is still very much alive to this day, it seems that a growing number of Danish citizens have experienced a growing unease or even embarassment related to the celebration of the nation through national songs (”fædrelandssange”). Taking its departure from various approaches to communal singing, such incidents are registered and discussed in the article. This is also the case for a number of identifiable counter-tendencies, revealing a gap between the two practices of, respectively, celebrating the nation in song and distancing oneself from it. Finally, the article askes whether post-national phenomenons will prove able to challenge and perhaps alter the hegemonic nation-building discourse of communal singing in the future.
What are the Andean Colombian anurans? Empirical regionalization proposalsvs. observed patterns of compositional dissimilarity
Authors: Herrera-Lopera Jorge Mario , Ramírez Castaño Viviana Andrea , Cultid-Medina Carlos A. 
Published: June 2023

BackgroundDefining Andean anurans through their altitudinal limits has been a common practice in species lists, studies of responses to climate change among others, especially in the northern Andes. At least three proposals to differentiate Andean anurans from lowland anurans through elevation and at least one to differentiate Andean anurans from high mountain anurans have been formulated. However, the most frequently used altitudinal limits are not based on theoretical or numerical support, but on observations or practical definitions. Additionally, these proposals have been applied equally to different portions of the Andes, ignoring the fact that even between slopes of the same mountain, environmental conditions (and therefore the distribution of species) may differ. The objective of this work was to evaluate the concordance between the altitudinal distribution of anurans in the Colombian Andes and four different altitudinal delimitation proposals.MethodsWe constructed our study area in a manner that allowed us to include species from the Andean region (as traditionally defined) and adjacent lowlands, because if the boundaries criteria were applied they would separate the species of the latter by themselves. We divided the study area into eight entities according to the watershed and the course of the most important rivers. We conducted a bibliographic search for all anurans in the cordilleras and inter-Andean valleys of Colombia and complemented the search with information on anurans for the region available in the GBIF. After curing the species distribution points, we generated elevation bands of 200 m amplitude for both the study area and for each Andean entity. Subsequently, we performed a cluster analysis to evaluate the grouping of the elevation bands according to their species composition.ResultsIn none of the cases (neither for the entire study area nor for any of the entities) we found a correspondence of any of the traditionally used boundaries and the altitudinal distribution of Anurans in the Andean region of Colombia. Instead, on average, the altitudinal delimitation proposals arbitrarily spanned the altitudinal distribution of about one third of the species distributed in the study area.ConclusionsWe suggest that, although, based on our results, some Andean entities can be divided according to the altitudinal composition of the species that occur in them, we did not find any results that support the idea of a generalizable altitudinal limit for the Colombian Andes. Thus, to avoid biases in studies that may later be used by decision makers, the selection of anuran species in studies in the Colombian Andes should be based on biogeographic, phylogenetic or natural history criteria and not on altitudinal limits as they have been used.
Detection and Comparison of RAPD & SSR Primers in Genetic Diversity of Ocimum sanctum
Authors: Sutar S. R. , Surbhaiyya S. D. , Dhumale D. R. , Kasar V. B. , Bhole A. P. , Kulkarni V. R. 
Published: June 2023

Aims: To Analysis of genetic variability in Tulsi (Ocimum sanctum) genotypes by using RAPD & SSR Markers.
Place and Duration of Study: Department of Plant Biotechnology at K.K.Wagh College of Agricultural Biotechnology, Nashik.
Methodology: Ocimum tenuiflorum Linn., commonly known as Tulsi, is an aromatic plant with significant traditional and medicinal value. To assess the genetic diversity and relatedness of six Tulsi genotypes (Krishna, Ram, Lavangi, Pandharpuri, Daisil, and Kapoori), molecular techniques were employed. The genotypes were collected from Nagarjuna Medicinal and Aromatic Plant Park at Dr. P.D.K.V. Akola. DNA isolation was performed using alcohol fixation without liquid nitrogen, and the genotypes were analyzed using RAPD and SSR primers for molecular characterization.
Results: Genetic diversity analysis of six Tulsi genotypes (Krishna, Ram, Lavangi, Pandharpuri, Daisil, and Kapoori) was performed using RAPD and SSR markers. Five RAPD primers produced 15 bands, with 11 bands showing polymorphism (73.3%) and 4 bands showing monomorphism (26.7%). The PIC value ranged from 0.28 to 0.49 (average: 0.40). Four SSR primers generated 9 bands, with 8 bands showing polymorphism and 1 band showing monomorphism. The PIC value ranged from 0.24 to 0.57 (average: 0.39). The Jaccard coefficient revealed moderate to high similarity in RAPD (0.40 to 0.73) and SSR (0.44 to 0.88) analyses. The UPGMA dendrogram separated the genotypes into two main clusters. Cluster 1 included Krishna, Lavangi, Ram, Pandharpuri, and Daisil Tulsi, while cluster 2 consisted of Kapoori Tulsi. The SSR dendrogram also formed two clusters, with Krishna, Lavangi, Ram, Daisil, and Kapoori genotypes in cluster 1, and Pandharpuri Tulsi showing dissimilarity and forming cluster 2.
How much rotational error is clinically acceptable for single‐isocenter/two‐lesion lung SBRT treatment on halcyon ring delivery system (RDS)?
Authors: Pokhrel Damodar , Mallory Richard , Bernard Mark E. , Kudrimoti Mahesh 
Published: June 2023

AbstractPurposeSBRT treatment of two separate lung lesions via single‐isocenter/multi‐target (SIMT) plan on Halcyon RDS could improve patient comfort, compliance, patient throughput, and clinic efficiency. However, aligning two separate lung lesions synchronously via a single pre‐treatment CBCT scan on Halcyon can be difficult due to rotational patient setup errors. Thus, to quantify the dosimetric impact, we simulated loss of target(s) coverage due to small, yet clinically observable rotational patient setup errors on Halcyon for SIMT treatments.MethodsSeventeen previously treated 4D‐CT based SIMT lung SBRT patients with two separate lesions (total 34 lesions, 50 Gy in five fractions to each lesion) on TrueBeam (6MV‐FFF) were re‐planned on Halcyon (6MV‐FFF) using a similar arc geometry (except couch rotation), dose engine (AcurosXB algorithm), and treatment planning objectives. Rotational patient setup errors of [± 0.5⁰ to ± 3.0⁰] on Halcyon were simulated via Velocity registration software in all three rotation axes and recalculated dose distributions in Eclipse treatment planning system. Dosimetric impact of rotational errors was evaluated for target coverage and organs at risk (OAR).ResultsAverage PTV volume and distance to isocenter were 23.7 cc and 6.1 cm. Average change in Paddick's conformity indexes were less than −5%, −10%, and −15% for 1°, 2°, and 3°, respectively for yaw, roll, and pitch rotation directions. Maximum drop off of PTV(D100%) coverage for 2° rotation was −2.0% (yaw), −2.2% (roll), and −2.5% (pitch). With ±1° rotational error, no PTV(D100%) loss was found. Due to anatomical complexity: irregular and highly variable tumor sizes and locations, highly heterogenous dose distribution, and steep dose gradient, no trend for loss of target(s) coverage as a function of distance to isocenter and PTV size was found. Change in maximum dose to OAR were acceptable per NRG‐BR001 within ±1.0° rotation, but were up to 5 Gy higher to heart with 2° in the pitch rotation axis.ConclusionOur clinically realistic simulation results show that rotational patient setup errors up to 1.0° in any rotation axis could be acceptable for selected two separate lung lesions SBRT patients on Halcyon. Multivariable data analysis in large cohort is ongoing to fully characterize Halcyon RDS for synchronous SIMT lung SBRT.
Transformative Materials to Create 3D Functional Human Tissue Models In Vitro in a Reproducible Manner
Authors: Gerardo‐Nava Jose L. , Jansen Jitske , Günther Daniel , Klasen Laura , Thiebes Anja Lena , Niessing Bastian , Bergerbit Cédric , Meyer Anna A. , Linkhorst John , Barth Mareike , Akhyari Payam , Stingl Julia , Nagel Saskia , Stiehl Thomas , Lampert Angelika , Leube Rudolf , Wessling Matthias , Santoro Francesca , Ingebrandt Sven , Jockenhoevel Stefan , Herrmann Andreas , Fischer Horst , Wagner Wolfgang , Schmitt Robert H. , Kiessling Fabian , Kramann Rafael , De Laporte Laura 
Published: June 2023

AbstractRecreating human tissues and organs in the petri dish to establish models as tools in biomedical sciences has gained momentum. These models can provide insight into mechanisms of human physiology, disease onset, and progression, and improve drug target validation, as well as the development of new medical therapeutics. Transformative materials play an important role in this evolution, as they can be programmed to direct cell behavior and fate by controlling the activity of bioactive molecules and material properties. Using nature as an inspiration, scientists are creating materials that incorporate specific biological processes observed during human organogenesis and tissue regeneration. This article presents the reader with state‐of‐the‐art developments in the field of in vitro tissue engineering and the challenges related to the design, production, and translation of these transformative materials. Advances regarding (stem) cell sources, expansion, and differentiation, and how novel responsive materials, automated and large‐scale fabrication processes, culture conditions, in situ monitoring systems, and computer simulations are required to create functional human tissue models that are relevant and efficient for drug discovery, are described. This paper illustrates how these different technologies need to converge to generate in vitro life‐like human tissue models that provide a platform to answer health‐based scientific questions.
A Deformable Additive on Defects Passivation and Phase Segregation Inhibition Enables the Efficiency of Inverted Perovskite Solar Cells over 24%
Authors: Xie Lisha , Liu Jian , Li Jun , Liu Chang , Pu Zhenwei , Xu Peng , Wang Yaohua , Meng Yuanyuan , Yang Mengjin , Ge Ziyi 
Published: June 2023

AbstractThe defects and phase segregation in perovskite will significantly reduce the performance and stability of perovskite solar cells (PSCs). In this work, a deformable coumarin is employed as a multifunctional additive for formamidinium–cesium (FA‐Cs) perovskite. During the annealing process of perovskite, the partial decomposition of coumarin passivates the Pb2+, iodine, and organic cation defects. Additionally, coumarin can affect colloidal size distributions, resulting in relatively large grain size and good crystallinity of target perovskite film. Hence, the carrier extraction/transport can be promoted, trap‐assisted recombination is reduced, and energy levels are optimized in target perovskite films. Furthermore, the coumarin treatment can significantly release residual stress. As a result, the champion power conversion efficiencies (PCEs) of 23.18% and 24.14% are obtained for Br‐rich (FA0.88Cs0.12PbI2.64Br0.36) and Br‐poor (FA0.96Cs0.04PbI2.8Br0.12) based devices, respectively. The flexible PSCs based on Br‐poor perovskite exhibit an excellent PCE of 23.13%, one of the highest values for flexible PSCs reported to date. Due to the inhibition of phase segregation, the target devices exhibit excellent thermal and light stability. This work provides new insights into the additive engineering of passivating defects, stress relief, and inhibition of phase segregation of perovskite films, offering a reliable method to develop state‐of‐the‐art solar cells.
Dibenzoylperoxide as a Versatile Oxidant for Oxidative Azidations of Phenols Using Quaternary Ammonium Iodides or Bromides.
Authors: Mairhofer Christopher , Waser Mario 
Published: June 2023

AbstractDibenzoylperoxide emerged as a versatile oxidant for quaternary ammonium iodide or bromide‐catalyzed reactions of phenol derivatives with NaN3. While the use of iodides allowed for efficient benzylic azidations under these oxidative conditions, the use of bromides allowed for dearomative azidations instead. Both approaches have been successfully applied to different phenol derivatives and a first proof‐of‐concept for an enantioselective variant using chiral quat. ammonium bromides has been obtained as well.
A Simple Preparation of Alkylzinc Reagents Compatible with Carbonyl Functions
Authors: Schiltz Pauline , Gao Mengyu , Ludwig Corentin , Gosmini Corinne 
Published: June 2023

AbstractHerein, we report a direct method to prepare alkylzinc compounds from functionalized alkyl bromides using cobalt catalysis under mild conditions. This procedure only requires a simple catalytic system composed of CoBr2 and bipyridine as ligand in a mixture of acetonitrile/pyridine. This reaction is stable under air and moisture conditions opening the way to an accessible procedure. A wide range of functional groups such as esters, cyano and halogens on primary and secondary alkyl bromides was well tolerated and gave high yields of the corresponding alkylzinc compounds. Additionally, we managed to form alkylzinc reagents bearing sensitive functional groups such as ketones and aldehydes with good yields. The direct application of these alkylzinc derivatives in palladium‐catalyzed Negishi cross‐coupling with various functionalized aryl bromides proved the efficiency and robustness of this methodology.
Versatile Post‐synthetic Modifications of Helical β‐Peptide Foldamers Derived from a Thioether‐Containing Cyclic β‐Amino Acid
Authors: Lim Danim , Lee Wonchul , Hong Jungwoo , Gong Jintaek , Choi Jonghoon , Kim Jaewook , Lim Seolhee , Yoo Sung Hyun , Lee Yunho , Lee Hee‐Seung 
Published: June 2023

AbstractWe introduce a novel cyclic β‐amino acid, trans‐(3S,4R)‐4‐aminotetrahydrothiophene‐3‐carboxylic acid (ATTC), as a versatile building block for designing peptide foldamers with controlled secondary structures. We synthesized and characterized a series of β‐peptide hexamers containing ATTC using various techniques, including X‐ray crystallography, circular dichroism, and NMR spectroscopy. Our findings reveal that ATTC‐containing foldamers can adopt 12‐helical conformations similar to their isosteres and offer the possibility of fine‐tuning their properties via post‐synthetic modifications. In particular, chemoselective conjugation strategies demonstrate that ATTC provides unique post‐synthetic modification opportunities, which expand their potential applications across diverse research areas. Collectively, our study highlights the versatility and utility of ATTC as an alternative to previously reported cyclic β‐amino acid building blocks in both structural and functional aspects, paving the way for future research in the realm of peptide foldamers and beyond.
Synthesis of Trifluoromethylated Alkenes: Hypervalent Iodine Meets High‐Valent Copper
Authors: Milzarek Tobias Michael , Waser Jerome 
Published: June 2023

AbstractThe first trifluoromethylation of vinylbenziodoxolones (VBX) is reported herein. The synthetic method is based on the use of bench‐stable, high‐valent copper(III) species, and the reaction can be initiated under thermal conditions and/or irradiation (365 nm) giving access to trifluoromethylated alkenes in a stereoselective fashion. Various VBX reagents derived from tyrosine, cysteine, small peptides, thiols and amides can be used as precursors. The obtained alkenes could be further functionalized by reduction or epoxidation of the trifluoromethylated double bond. Furthermore, the method could be applied in a large‐scale batch/flow synthesis and could be conducted under visible light irradiation.
An archaeological review of Polynesian adze quarries and sources
Authors: Jennings Christopher , Weisler Marshall , Walter Richard 
Published: June 2023

ABSTRACTAdze quarries and sources are some of the most visible, unique and well‐preserved Polynesian archaeological sites where stone technology, intensification of production, other aspects of economy, social organisation and ritual practices are anchored together on the landscape. The production and exchange of adzes are associated with complex interaction networks connecting islands and archipelagos up to 4000 km distant making adzes amongst the most widely transferred tools in the Neolithic world. Our review of Polynesian adze quarries and sources demonstrates that site descriptions are uneven hampering regional comparisons based on size, production output and internal complexity. We therefore provide suggestions for future research with the overall goal of making comparisons between these sites more meaningful. We believe it is an exciting time to be studying one of the most important site classes in archaeology not just to know how stone adzes were made, but what we can also learn about the development and variability of complex societies across Polynesia.
Passiv‐Solar‐Fassade – rezyklierbare Fassadendämmung mit Solarenergienutzung
Authors: Stricker Rolf , Stricker Til 
Published: June 2023

AbstractMit der Passiv‐Solar‐Fassade wird ein Außenwand‐Dämmsystem vorgestellt, mit dem durch eine transparente Vorsatzschale vor der Dämmschicht Solarenergiegewinne verstärkt genutzt werden können. In einer Parameterstudie wird aufgezeigt, dass sich der Transmissionswärmeverlust gegenüber eines WDVS über alle Dämmstoffdicken je nach Ausrichtung zwischen 20 % und 40 % zusätzlich verringern lässt. Durch die absorbierte Solarenergie wird die Dämmstoffaußenseite sowie die Luftschicht zwischen Dämmung und transparenter Fassadenverkleidung erwärmt, sodass die Temperaturdifferenz von innen nach außen reduziert wird. Dieser Effekt senkt den Transmissionswärmestrom linear, also unabhängig von der Dämmstoffdicke und unterliegt somit nicht dem sogenannten „U‐Wert‐Reziprok‐Dilemma“. Da zum notwendigen Ziel der Energiewende – Nutzung von Wärmepumpen in Bestandsgebäuden – neben der Senkung der Heizenergie die Senkung der Heizlast eine entsprechende Dämmstoffdicke erfordert, wäre der Rückschluss, es könnte hierfür durch die transparente Fassadenverkleidung auf Dämmstoffdicke verzichtet werden, ein Trugschluss. Durch die Passiv‐Solar‐Fassade kann zum Erreichen eines Passivhaus‐Heizenergiebedarf‐Niveaus jedoch die erforderliche Dämmstoffdicke verringert werden.