bluuebunny/crossref_metadata_2025 huggingface dataset:
Don Gil Rodríguez de Junterón: Committente Architettonico e Artistico tra Roma e Murcia
Authors: Villella Marzia
Published: October 2024

Este artículo intenta subrayar la influencia de un comitente, prelado de la catedral de Murcia, que cumple un papel fundamental en la historia de la arquitectura renacentista española facilitando desde su regreso de la corte papal, un lento proceso que acabará con la introducción de las formas renacentistas en España. Se ha intentado reconstruir la estancia de D. Gil Rodríguez de Junterón (1480?-1552), arcediano de Lorca y protonotario apostólico, una personalidad polifacética e inquieta, en la corte romana de Julio II della Rovere (1503-13) en uno de los decenios más floridos de la capital del catolicismo. A su vuelta a España, Junterón fue elegido fabriquero mayor de la catedral de Murcia. Ordenó la construcción de una revolucionaria capilla fúnebre en la catedral de Murcia, una de las primeras obras arquitectónicas "a la antigua" en España e identificó su nombre con el de Julio II, del cual recibió muchas prebendas. Se opuso a la institución de una nueva diócesis en Orihuela, participó en la revuelta de las comunidades y fundó un rico mayorazgo en la huerta murciana (Beniel, Azeneta y Villoria) que se mantuvo hasta el s. XVIII. La labor de investigación en el Archivo Secreto Vaticano y en los archivos de Murcia, Madrid y Valladolid ha permitido un importante avance en la reconstrucción de la biografía de Junterón, que se resume en este artículo al tiempo que se reflexiona sobre la importancia del comitente en la historia del arte y de la arquitectura.
Pintores y escultores del siglo XVI al servicio de la Universidad de Alcalá: Algunas noticias inéditas sobre sus producciones artísticas
Authors: González Ramos Roberto
Published: October 2024

El destacado centro artístico que fue Alcalá de Henares en el siglo XVI es conocido someramente. Diversos estudios han aportado el nombre de sus principales protagonistas y noticias sobre sus producciones en el entorno geográfico de la villa. Pero sobre sus trabajos para una de las principales instituciones complutenses, la Universidad, nada se había investigado en profundidad. Este artículo aporta datos sobre algunos de esos trabajos, pictóricos y escultóricos, que tanto los artífices complutenses como algún otro venido de fuera realizaron al servicio de la institución académica a lo largo de la centuria y de los que no se tenía conocimiento más que marginal.
Note sul viaggio in Spagna di Angelo Michele Colonna e Agostino Mitelli
Authors: Raggi Giuseppina
Published: October 2024

Il testo approfondisce il ruolo giocato dalla famiglia granducale toscana, in particolare dal cardinale Giovan Carlo de' Medici, nella vicenda artistica di Colonna e Mitelli, soprattutto in occasione del loro trasferimento in Spagna. Vengono testimoniati, su base documentale, i costanti rapporti intrattenuti tra la corte toscana, il marchese Ferdinando Cospi (agente della casa medica a Bologna) e gli ambasciatori fiorentini presso la corte di Spagna (anni 1658-1662). Inoltre, l' analisi di alcuni disegni appartenenti al fondo della Biblioteca Nazionale di Madrid contribuisce al dibattito sulle ipotesi di ricostruzione grafica delle opere realizzate in Spagna da Colonna e Mitelli, oggi perdute. In particolare si concentra sui problemi attributivi e completa, sulla base di una nuova lettura iconografica, la serie di affreschi che decoravano l' Ermida de San Pablo nel giardino del Buen Retiro.
Francisco Zorilla (Haro, 1679-1747): viaje vital y artístico de un pintor del siglo XVIII entre La Rioja y Madrid
Authors: Gutiérrez Pastor Ismael
Published: October 2024

Este trabajo pretende definir del modo más completo posible la personalidad del pintor Francisco Zorrilla (Haro, 1679-1747), reuniendo cuantos documentos han sido publicados hasta el momento y dando a conocer otros nuevos que proporcionan claves fundamentales sobre su origen, su personalidad y su arte. También lo es el estudio de su obra conocida y las aportaciones nuevas, a veces de importancia capital, que permanecen sin estudiar en su adecuado contexto histórico-artístico, a pesar de haber sido mencionadas en la bibliografía local de La Rioja. De este modo se podrá valorar el papel de Zorrilla en el ambiente artístico madrileño del reinado de Felipe V y su aportación tardía a la pintura barroca de La Rioja a través de dos importantes conjuntos decorativos como son la sacristía (1742) y la cúpula (1745) de la basílica de Nuestra Señora de la Vega de Haro (La Rioja), ciudad de la que nació el pintor, a la cual vino a trabajar abandonando Madrid y en la que finalmente moriría en 1747.
Juan Sánchez Barba (1602-1673), escultor
Authors: Blanco Mozo Juan Luis
Published: October 2024

Juan Sánchez Barba se formó en el taller de su cuñado Antonio de Herrera como especialista en la talla de imágenes. Tras colaborar estrechamente con su maestro hasta principios de la década de los treinta, formó su propio obrador con el que se hizo un nombre en el mercado artístico madrileño gracias a su habilidad manual. Su capacidad de contratación directa se redujo a esculturas devocionales para clientes particulares y cofradías. Pero además trabajó de forma intensa para los arquitectos y ensambladores que copaban la ejecución de los grandes retablos. Sus esculturas de la Pasión de Cristo le darían justa fama en el Madrid de mediados del siglo XVII. En este sentido se ha tratado de poner orden en su producción, analizando las piezas que se le han atribuido en los últimos años y aportando nuevos datos sobre algunas inéditas, como el Cristo yacente que se conserva en la iglesia parroquial de Nuestra Señora de la Asunción de Navalcarnero (Madrid).
Un "porcón" para Diego Velázquez
Authors: Marías Franco Fernando
Published: October 2024

Uno de los episodios todavía mal conocidos de la biografía de Velázquez es el de la concesión real de un oficio de la escribanía del repeso mayor. La publicación de un "porcón" jurídico en favor del pintor arroja nueva luz sobre esta merced regia.
"Del estudio en la theórica y del trabajo en la práctica": observaciones sobre la formación, ideas y obra del arquitecto Vicente Acero
Authors: De la Sierra Fernández Lorenzo Alonso , Herrera García Francisco Javier
Published: October 2024

Vicente Acero continúa siendo un arquitecto infravalorado, a pesar de que intervino en la construcción de algunas de las más representativas creaciones del Barroco español, como pueden ser los sagrarios de las cartujas de Granada y El Paular la Catedral de Cádiz, la fachada de la Catedral de Guadix, etc. En estas líneas analizamos las circunstancias y motivaciones que orientan su siempre difícil labor, atendiendo a su formación como cantero, la influencia y participación en las obras de su maestro Francisco Hurtado, los contactos con los ingenieros militares, los préstamos visibles de la arquitectura barroca italiana al igual que, a la luz de nuevos datos, profundizamos en sus conocimientos teóricos.
Antonio Manzelli: an early View of Madrid (c. 1623) in The British Library, London
Authors: Escobar Jesús R.
Published: October 2024

Este artículo examina una estampa recién descubierta con una vista de la Plaza mayor de Madrid de hacia 1623, realizada por el artista italiano Antonio Manzelli. La obra se conserva en la British Library de Londres, habiendo formado antes parte de la colección del rey Jorge III. El artículo analiza la estampa, considerando tanto lo que nos enseña del aspecto de la plaza inmediatamente después de su terminación, como lo quenos explica el texto que la acompaña. En el texto, se elogia a Madrid como la obra de un gobierno municipal bien organizado que sirve a las necesidades de la ciudad, y como obra de un líder benévolo que ofrece a los dioses un regalo digno de su admiración. La Plaza Mayor se convierte así en un poderoso símbolo de buen gobierno.
De arte y rito: "Santo Domingo in Soriano" en la pintura barroca madrileña
Authors: Collar de Cáceres Fernando
Published: October 2024

La fama de la milagrosa pintura de Santo Domingo de Soriano dio pronto lugar a la realización de diversas copias y representaciones de aquella aparición de la Virgen en Calabria. Entre las primeras habidas en Madrid se cuentan las pintadas por Juan Bautista Maino y Vicente Carducho. La propia Orden de Predicadores fomentó la difusión de su culto y la creación de capillas específicas, como la realizada por Gómez de Mora en Santo Domingo el Real, y el traslado y colocación de aquellas en sus altares con gran pompa y ceremonial.
Nuevos datos sobre Sebastián de Herrera Barnuevo en los Recoletos Agustinos y en el Colegio Imperial de Madrid
Authors: Díaz García Abraham
Published: October 2024

En este artículo se realizan aportaciones sobre la figura de Sebastián Herrero Barnuevo. En concreto se han analizado aspectos biográficos no tenidos en cuenta hasta ahora y revisado tres de sus obras pictóricas fundamentales: el retablo de la capilla mayor del Convento de los Agustinos Recoletos de Madrid (1654-1655), la capilla de la Sagrada Familia (1657-1658) y la capilla del Buen Consejo de la Iglesia del Colegio Imperial de Madrid. Para ello se ha empleado nueva información aparecida y revisado aquella que no se había utilizado con exactitud.
El pintor José Moreno (c. 1630/1637-1677): revisión de su vida y nuevas obras
Authors: Gutiérrez Pastor Ismael
Published: October 2024

Una nueva lectura de los documentos conocidos sobre el pintor José Moreno (Madrid, hacia 1630/1637-Burgos, 1677) permite replantear los aspectos de su vida familiar y de su profesión. La revisión de la obra conocida dentro de este nuevo contexto y la aportación de nuevas pinturas sirven para entender mejor su papel dentro de la escuela madrileña del Barroco. La última etapa de su vida queda precisada en Burgos entre 1674 y 1677.
La ebanistería madrileña y el mueble cortesano en el siglo XVIII (II)
Authors: López Castán Ángel
Published: October 2024

Arquitectos y adornistas participaron activamente en el diseño y dirección de los numerosos muebles y conjuntos decorativos realizados durante el siglo XVIII para los palacios y residencias reales borbónicos. Singulares fueron, en este sentido, las aportaciones de los arquitectos Ventura Rodríguez, Francisco Sabatini o Juan de Villanueva, cuya actividad en el terreno de la decoracidn y el mobiliario llegarían a superar, incluso, imaginativos adornistas como Matías Gasparini, Juan Bautista Ferroni o Jean-Démosthéne Dugourc. Fuente de primera mano para su conocimiento es la documentacidn conservada en el Archivo General de Palacio (Palacio Real, Madrid), de la que ofrecemos datos inéditos, así como una exhaustiva revisión de los ya publicados
МЕТОДИЧЕСКИЕ ОСНОВЫ ОБЕСПЕЧЕНИЯ УСТОЙЧИВОСТИ УСТУПОВ И УЧАСТКОВ БОРТОВ КАРЬЕРОВ
Authors: В.Л. ЯКОВЛЕВ , А.В. ЯКОВЛЕВ , Е.С. ШИМКИВ
Published: October 2024

Для обоснования условий обеспечения устойчивости уступов и участков бортов карьеров приведены этапы развития соответствующей нормативной базы. Рассмотрены дополнительные факторы, влияющие на устойчивость уступов и участков бортов карьеров в гравитационно-тектоническом поле напряжений. Представлены основные направления изучения прибортовых массивов на действующих карьерах и показана необходимость определения тектонических напряжений в прибортовых массивах скальных горных пород и учета их воздействия на устойчивость карьерных откосов. Разработан алгоритм обоснования параметров уступов и участков бортов карьеров в тектонически напряженных массивах горных пород, сформулированы принципы ведения буровзрывных работ в приконтурных зонах и способы уменьшения воздействия взрывных работ на законтурный массив.

The article describes the development stages of an adequate regulatory structure for the slope stability in open pit mines. Some supplementary factors that have influence on stability of slopes in open pit mines in the gravity-tectonic stress field are discussed. The main trends of research of pitwall rock mass in operating surface mines are presented, and the necessity of determining the tectonic stresses in pitwall rock mass and taking into account their impact on slope stability is emphasized. The algorithm is developed for justifying slope parameters for open pit mines under tectonic stresses, the drilling-and-blasting principles are formulated for the operation in pitwall rock mass, and the methods are proposed to mitigate the blasting-induced impact on adjacent rocks.
РАСЧЕТ ТЕРМОНАПРЯЖЕННОГО СОСТОЯНИЯ МАССИВА ГОРНЫХ ПОРОД В ОКРЕСТНОСТИ ОЧИСТНЫХ ВЫРАБОТОК
Authors: В.М. СЕРЯКОВ
Published: October 2024

Рассмотрена постановка задачи об определении теплового и напряженно-деформированного состояния породного массива при ведении горных работ на больших глубинах. Предложен подход к определению стационарного поля температур, возникающих в районе отработки запасов полезных ископаемых с закладкой выработанного пространства твердеющими смесями, с однократным формированием матрицы жесткости расчетной системы. Установлено, что учет изменения температуры в массиве с глубиной приводит к увеличению исходных горизонтальных напряжений, а исходные вертикальные напряжения не изменяются. Метод расчета перераспределения напряженного состояния массива горных пород в ходе ведения очистных и закладочных работ, в котором на всех этапах расчета используется одна и та же матрица жесткости, модернизирован для случая учета температурных напряжений. Проведены расчеты теплового и напряженного состояний породного и закладочного массивов для одного из вариантов отработки пологопадающего рудного тела с закладкой выработанного пространства.

The article addresses the problem on thermal stresses and stress-strain behavior of rock mass during deep-level mining. The author proposes an approach to determining the stationary field of temperatures in the zone of mining with cemented paste backfill with single formation of stiffness matrix in the calculation. It is found that inclusion of the temperature change depthward rock mass in the analysis results in the increase in the initial horizontal stresses while the initial vertical stresses remain unaltered. The calculation method of stress redistribution in the course of mining with backfill, with the same stiffness matrix used at all calculation stages, is modified for taking into account the thermal stresses. The calculation of the thermal stress state of surrounding rocks and backfill is carried out for a variant of mining with backfill in a gently dipping ore body.
ЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ НАПРЯЖЕННО-ДЕФОРМИРОВАННОГО СОСТОЯНИЯ МАССИВА ГОРНЫХ ПОРОД ПРИ ОТРАБОТКЕ НИЖНИХ ПЛАСТОВ СВИТЫ
Authors: С.В. РИБ , О.А. ПЕТРОВА , А.М. НИКИТИНА , В.А. ВОЛОШИН , В.Н. ФРЯНОВ
Published: October 2024

Описаны особенности отработки свиты угольных пластов. Проведена оценка напряженно-деформированного состояния массива горных пород при отработке нижних пластов свиты с учетом влияния угольных целиков и выработок на верхних пластах. Рассмотрены различные варианты расположения подготовительной выработки на нижнем пласте свиты, охраняемой целиком. Выполнен прогноз напряженно-деформированного состояния массива горных пород, адаптированный к условиям шахт юга Кузбасса, на основе которого осуществляется выбор наиболее безопасного с геомеханической точки зрения варианта расположения подготовительной выработки.

The features of mining of a coal series are described. The stress-strain behavior of rock mass during mining of the lower strata in the series is assessed with regard to the influence of coal pillars and upper level roadways. Different variants of location of a temporary roadway on the lower stratum in a series protected by a pillar are discussed. The implemented prediction of the stress-strain behavior of rock mass is adapted to the conditions of mines in the south of Kuzbass. This prediction is used to select the geomechanically safest variant of location of the temporary roadway.
ТЕОРЕТИЧЕСКОЕ И ЭКСПЕРИМЕНТАЛЬНОЕ ОБОСНОВАНИЕ МЕТОДОВ ПОЛУЧЕНИЯ ВТОРИЧНЫХ ПРОДУКТОВ ИЗ САПОНИТСОДЕРЖАЩИХ ТЕХНОГЕННЫХ ВОД
Authors: В.А. ЧАНТУРИЯ , В.Г. МИНЕНКО
Published: October 2024

Теоретически и экспериментально обоснованы перспективные методы модификации сапонита - пилларинг и термическая обработка, обеспечивающие получение сорбентов с высокой емкостью катионного обмена по отношению к катионам тяжелых металлов. Механизм пилларинга и термической модификации при температуре 625 °С сапонитсодержащего продукта заключается в расширении слоев минерала, образовании дополнительных кислотных или окислительно-восстановительных центров (пилларинг), в изменении структуры с образованием метастабильных фаз (термическая обработка). Модификация сапонита обеспечивает повышение статической обменной емкости по отношению к катионам меди при пилларинге - в 2 раза, при термической модификации - в 2.6 раза.

The authors provide the theoretical and experimental justification for the effective methods of modification of saponite-pillaring and thermal treatment-which ensure production of sorbents possessing high cation exchange capacity relative to cations of heavy metals. The mechanism of pillaring and thermal modification of a saponite-containing product at the temperature of 625 °С involves expansion of layers of the mineral, formation of additional acid or redox sites (pillaring) and restructuring with generation of metastable phases (thermal treatment). Modification of saponite increases static exchange capacity relative to copper cations by 2 times after pillaring and by 2.6 times after thermal treatment.
ИСПОЛЬЗОВАНИЕ ГЕОПРОСТРАНСТВЕНЫХ ДАННЫХ ДЛЯ ОЦЕНКИ СОСТОЯНИЯ ТЕХНОГЕННО НАРУШЕННЫХ ЗЕМЕЛЬ
Authors: Н.С. КОСАРЕВ , А.А. КОЛЕСНИКОВ , А.В. РЕЗНИК , Н.А. НЕМОВА , Д.С. ОЖИГИН
Published: October 2024

Предложен порядок получения и интерпретации различными средствами и методами геопространственных данных при ведении горных работ, повышающих точность оценки техногенно нарушенных земель. Разработанный подход базируется на принципе поэтапного перехода от территорий технологических объектов к их отдельным участкам. Показаны примеры интеграции данных спутниковой съемки местности, наземного лазерного сканирования и съемки с беспилотных авиационных систем в цифровые модели местности. Отмечено, что рациональное сочетание различных методов получения и интерпретации геопространственных данных позволяет формировать высокоточную геоинформационную основу цифровых двойников различных объектов, связанных с недропользованием.

The authors propose a sequence of acquisition and interpretation of geospatial data obtained using different methods and means during mineral mining toward the accuracy increase in evaluation of industrially disturbed land. This approach uses the concept of stage-wise transition from the areas of industrial facilities to their individual points. The integration of data of satellite surveys, ground-based laser scanning and unmanned aerial surveillance in the digital models of land areas is described. It is highlighted that the rational combination of different methods of geospatial data acquisition and interpretation produces a high-accurate geoinformation system of digital twins of various subsoil use facilities.
РЕЗУЛЬТАТЫ ВЕРИФИКАЦИИ ТОЧНОСТИ МОДЕЛИ ПРОГНОЗА ПРОЧНОСТИ ОСАДОЧНЫХ ПОРОД ЮЖНОЙ ЯКУТИИ МЕТОДОМ ДИСТАНЦИОННОГО ИНДУКТИВНОГО ЗОНДИРОВАНИЯ
Authors: Л.Г. НЕРАДОВСКИЙ
Published: October 2024

Рассмотрен результат ретроспективной верификации модели прогноза прочности водонасыщенных осадочных пород, слагающих в Южной Якутии основания инженерных сооружений. Модель разработана для условий г. Нерюнгри. Исходными данными для модели служила мера затухания гармонического поля вертикального магнитного диполя, определенная методом дистанционного индуктивного зондирования на частоте 1.125 МГц. Ошибки модели близки к допустимой ошибке лабораторной оценки средней прочности образцов пород, равной ±20 %. С вероятностью около 70 % ошибки модели в разных условиях строительства и эксплуатации инженерных сооружений составляют ±(16.8-33.5) %. Общая ошибка модели при принятой вероятности равна 27.2 % с максимальным разбросом единичных значений в сторону завышения лабораторной прочности слабых пород на 120.5 % или занижения прочности крепких пород на 86.8 %. Точнее всего (ошибки 22.8 и 21.9 %) задача прогноза прочности решается в условиях преимущественного распространения пород средней (15-50 МПа) и прочной (50-120 МПа) категорий. Полученная статистика доказывает региональный статус модели с практическим применением в Южной Якутии в областях распространения мерзлых высоко- и низкотемпературных осадочных пород с целью быстрого и экономичного решения задачи районирования застраиваемых территорий по категории прочности скально-полускальных грунтов.

This article discusses the results of retrospective verification of the strength prediction model for saturated rocks of southern Yakutia. The model was developed for the geotechnical conditions of the city of Neryungri. The input data for the model consisted of the decay rate coefficients of the harmonic field of a vertical magnetic dipole measured at a 1.125 MHz frequency using the geometric electromagnetic induction sounding method. The error of model predictions was close to the allowable error of ±20 % for average laboratory estimates of rock sample strength and ranged from ±16.8 to ±33.5 % for different site conditions with a probability of about 70 %. The total error of the model at this probability is 27.2 % with maximum outliers overestimating the laboratory strength of weak rocks by 120.5 % or underestimating the strength of strong rocks by 86.8 %. The model predictions were more accurate (errors of 22.8 and 21.9 %) for the rock masses composed predominantly of moderately strong (15-50 MPa) and strong (50-120 MPa) rocks. The statistical results indicate that the model is regionally representative and can be applied in the areas of warm and cold permafrost sedimentary rocks of southern Yakutia for rapid, cost-effective terrain evaluation by rock strength.
ПОДМЕРЗЛОТНЫЕ ВОДЫ СЕВЕРО-ВОСТОЧНОЙ ЧАСТИ ЛЕНО-АМГИНСКОГО МЕЖДУРЕЧЬЯ
Authors: М.А. ФЕДОРОВ , А.А. ФЕДОРОВ , Н.А. ПАВЛОВА
Published: October 2024

Цель работы состояла в уточнении гидрогеологических условий малоизученной северо-восточной части Лено-Амгинского междуречья. Для этого проведен анализ архивных (1965-1995 гг.) и опубликованных данных о подмерзлотных водах и мощности многолетнемерзлых пород на территории Чурапчинского и Таттинского районов Республики Саха (Якутия), с привлечением новых результатов полевых исследований (2009-2022 гг.). Основой для исследования послужили результаты бурения на подмерзлотные воды 19 поисковых скважин глубиной 450-650 м. Показано различие пьезометрических напоров и дана характеристика химического состава подмерзлотных вод юрского и среднекембрийского водоносных комплексов. Обосновывается смещение ранее установленной границы между этими водоносными комплексами на 50-80 км севернее. Выделена зона с особыми мерзлотно-гидрогеологическими условиями, приуроченная к Татта-Томпонскому тектоническому разлому. Предположительно, дизъюнктив формировался в условиях горизонтального сжатия, что привело к уплотнению пород, их пониженной проницаемости вдоль разлома и увеличению интенсивности промерзания.

The purpose of this work was to specify the hydrogeological conditions in the poorly studied northeastern part of the Lena-Amga interfluve. We analyzed archival (1965-1995) and published data on subpermafrost waters and permafrost thickness in the Churapcha and Tattinsky districts of the Republic of Sakha (Yakutia), including new field studies (2009-2022). The research was based on the data from 19 groundwater exploration wells, 450 to 650 m in depth. It is shown that the Jurassic and Middle Cambrian aquifer complexes differ in piezometric pressures and chemical composition. Based on the new information, it is suggested that the boundary between these two aquifer complexes should be shifted northward by 50-80 km. A zone with distinct specific hydrogeological conditions confined to the Tatta-Tompo fault was identified. Presumably, the fault was formed under conditions of horizontal compression, which resulted in the compaction of the rocks and their reduced permeability along the fault, as well as in the increased freezing intensity in the strata with a low water content during periods of decreased global temperatures.
The influence of amino anchoring position on SnO2/biochar for electroreduction of CO2 to HCOOH
Authors: Su Mingxue , Li Ning
Published: October 2024

Biochar derived from biomass resources as a carrier to load SnO2 for electroreduction of CO2 not only can benefit carbon emissions, but it also can achieve waste utilization. However, the weak CO2 mass transfer and conductivity ability of SnO2/biochar limits its applications to such eCO2RR processes. This study focused on modifying SnO2/biochar with amino groups and investigated the effects of positioning of amino groups on the catalyst’s physicochemical properties and electrocatalytic behaviors. Elemental analysis revealed that anchoring amino groups on biochar (SnO2/C-NHx) is advantageous for increasing amounts of amino groups attached, thereby enhancing biochar adsorption energy and subsequently increasing the loading of Sn. The CO2 adsorption curve indicated that amino groups anchored on biochar facilitate CO2 adsorption due to high specific surface area of biochar. X-ray photoelectron spectroscopy showed that amino groups anchored on SnO2 (NHx-SnO2/C) resulted in highly electron-rich centers on Sn, which promoted electron transfer between the catalyst and CO2. Electrochemical tests demonstrated the improved performance of amino-modified SnO2/biochar. SnO2/C-NHx exhibited enhanced Faraday efficiency, whereas NHx-SnO2/C showed higher current density. The disparity in electrochemical performance can be mainly attributed to the different selectivity towards rate-controlling steps of electron transfer and mass transfer induced by the various positions of amino groups anchoring.
Effects of bolt diameter and loading direction on bearing and withdrawal resistance of half-threaded bolts in glued laminated timber
Authors: Amrudin Ameera Amani , Mohamad Bhkari Norshariza , Haris Fadzilah Nur Ashiqin , Hassan Rohana , Ahmad Zakiah , Suryoatmano Bambang , Tjahjanto Helmy Hermawan , Wong Norman Shew Yam , Azmi Anis
Published: October 2024

Timber connections were prepared using glulam from tropical plantation species, focusing on key properties for dowel-type joints with half threaded bolts without nuts: Bolt bearing strength and bolt withdrawal capacity. Tests were performed according to ASTM standards. Three half-threaded bolt diameters (12 mm, 16 mm, and 20 mm) were tested in two loading directions, parallel and perpendicular to the grain, with 12 replicates for each configuration. Response Surface Methodology (RSM) using Design Expert Software was applied to optimize bolt diameter for both loading directions. Results showed that bolt bearing strength was higher in perpendicular loading, with the 12 mm bolt achieving 16.6 N/mm², compared to 6.01 N/mm² in parallel loading. Withdrawal capacities varied, with the 16 mm bolt showing the highest capacity in perpendicular loading at 54.2 kN. The study demonstrates that the 16 mm bolt exhibited the optimal diameter-to-embedment length ratio compared to 12 mm and 20 mm bolts, resulting in the highest withdrawal capacity. Consequently, the 16 mm bolt represented the best balance for achieving maximum withdrawal capacity. The optimization suggests using a 16 mm bolt for parallel loading to the grain and a 14 mm bolt for perpendicular loading.
Pear performance as affected by the application of some nano fertilizers in combination with biochar as a biostimulant under drought conditions
Authors: Almutairi Khalid F. , Górnik Krzysztof , Eladly Ragheb M. , Mosa Walid F. A.
Published: October 2024

Drought is an environmental stress that can negatively influence growth and productivity of fruit trees because it decreases the photosynthetic rate and stomatal conductance and raises the rate of water loss from the plant surfaces. Therefore, this study investigated the soil application of biochar individually or in combination with the spraying of boron, silicon, and molybdenum relative to the growth attributes, fruit drop percentages, yield, and fruit quality of Le Conte pear trees grown under drought stress. The trees were fertilized by biochar at 0, 1, and 2 kg per tree individually or in combination with the foliar spraying with 0 mg B2O3 + 0 mg SiO2 + 0 mg MoO2, 10 mg B2O3 + 25 mg SiO2 + 25 mg MoO2, 20 mg B2O3 + 50 mg SiO2 + 50 mg MoO2 and 30 mg B2O3 + 75 mg SiO2 + 75 mg MoO2 at start of February, start of March and start of April, compared to untreated trees (control). The results showed that the soil addition of biochar or spraying of nano fertilizers individually or in combinations improved the vegetive growth, productivity and fruit quality, and leaf mineral content, meanwhile they reduced the fruit drop. The best results were obtained by the application of 2 kg biochar combined with 30 mg B2O3 + 75 mg SiO2 + 75 mg MoO2, which was superior to other applied treatments in the two seasons.
Wound healing activity of Ipomoea staphylina leaves extract in Wistar rats
Authors: Lu Manjun , Yang Hongchao , Yang Na , Peng Jun , Hou Xiuli
Published: October 2024

Wound repair is the practice of repairing the skin and other soft tissues after an injury. An inflammatory response is activated after an injury, and cells below the dermis (deepest skin layer) begin to produce more collagen (connective tissue). A scientific assessment was made for the wound-healing potential of Ipomoea staphylina leaves extract, using ethanol. The crude extract was made into a 2.5% and 5% (w/w) ointment and tested for wound healing activity in Wistar rats using excision and incision wound models. In the excision wound model, the period of epithelialization was reduced and an increase in wound contraction rate was observed in the extract treated groups (III and IV). On the tenth day, tissue from the excision wound area was taken and processed for the assessment of pro-inflammatory cytokines (TNF-α), and it was found that there was a notable decrease in the TNF-α concentration in the extract-treated animals. In an incision wound model, the breaking strength was significantly increased in animals treated with 2.5% and 5% (w/w) ointment of I. staphylina leaves extract. The extract significantly promoted fibroblast migration in an in vitro experiment (scratch assay), which may have been caused by the presence of flavonoids.
The current state of oral health and dental care system efficiency in twelve selected East European countries
Authors: Saekel Rüdiger
Published: October 2024

Objective: This investigation aims to highlight the often-overlooked landscape of oral care in East European countries by evaluating the dental status of their populations and the efficiency of their dental care systems. Method: The study employs the Dental Health Index (DHI), which measures the dental state of entire populations, allowing for quantifiable comparisons between differing countries and dental systems. The survey relies solely on existing epidemiological and various scientific data. Results: The findings reveal a wide range of results among the countries studied. On average, the oral health of the younger generation is satisfactory and has improved over the past two decades, with more significant progress observed in permanent teeth compared to deciduous teeth. However, the dental status of adults remains poor, with only a few signs of positive developments in the past decade. The most favourable DHIs are seen among Romanian and Serbian individuals, while Lithuanian and Bulgarian citizens exhibit a less favourable oral health status. Notably, the latter two countries have the highest dental density of those studied. In terms of benefit-cost reflections, Romania, Serbia and Poland perform best. Estonia and Lithuania appear to have untapped productivity resources. Conclusion: To enhance the overall oral health status of the population, the author advocates for a broader focus that extends the current prioritization of the young generation to include adults up to 35 years of age, as the period between 18 and 35 years significantly influences the future development of natural teeth. To implement effective measures for this reform, oral health policies must prioritize prevention and tooth retention. Suggestions are provided on how this could be achieved. An active, goal-oriented oral health policy is essential, for improving the currently unsatisfactory oral health status of adults. Without such efforts, the dental health of the elderly population is likely to deteriorate further.
Stem cell based therapy for polycystic ovarian syndrome
Authors: Gallicchio Vincent S , Solanki Hetvi
Published: October 2024

Polycystic ovarian syndrome is a complex, polyfactorial condition which involves multiple genes and body systems. The development of PCOS may be attributed to several factors such as genetics, epigenetics, hyperandrogenism, insulin resistance, and environmental factors. Current medication used to treat PCOS have been shown to be ineffective and thus the development of novel therapeutics is necessary. Numerous types of stem cells can play a therapeutic role in the treatment of PCOS including mesenchymal stem cells, bone marrow stromal cells, adipose derived stem cells, menstrual blood derived mesenchymal stem cells, umbilical cord mesenchymal stem cells, amniotic fluid stem cells. Potential limitations include transplant rejection, transportation and storage difficulties, commercialization difficulty, and safety issues without monitoring.
Study of Cluster Decays Including Those Leading to Doubly Magic Nucleus 298114 and Branching Ratios Relative to Alpha Decay
Authors: Bai G.M. Carmel Vigila , Ajithra V.S.
Published: October 2024

The study of superheavy nuclei (SHN) and their decay properties is one of the rapidly growing fields in nuclear physics. Using the CYE model, we have already studied the decay properties of the alpha decay, cluster decay, and spontaneous fission of the heavy and superheavy nuclei. In the present work, we will examine the effects by incorporating hexacontatetrapole (β6) parameter in the parent nucleus along with the quadrupole (β2), and hexadecapole (β4) deformations of the decaying parent nucleus emitting clusters 84Be and 126C. These deformations lower the half-life values, because they reduce the height and width of the potential barrier. Additionally, the creation of the doubly magic daughter 298114 from different decaying nuclei is computed. The calculated half-lives are compared with other models and are found to be in a good agreement. The branching ratios relative to the alpha-decay have also been calculated.
Vibrational Spectra and Computational Study of Amyl Acetate: MEP, AIM, RDG, NCI, ELF and LOL Analysis
Authors: Jumabaev A. , Hushvaktov H. , Absanov A. , Khudaykulov B. , Ernazarov Z. , Bulavin L.
Published: October 2024

This work is focused on biologically active neat amyl acetate and its solutions in ethanol/heptane. According to the experimental results, when the concentration of amyl acetate in the amyl acetate-ethanol solution decreases, the additional band appears on the low-frequency side. The primary reason for the formation of such additional band is the intermolecular hydrogen bonding between amyl acetate and ethanol. In the amyl acetate-heptane solution, as the concentration of amyl acetate in the solution decreases, the band corresponding to the C=O stretching vibrations shifted to a higher frequency. This is explained by the fact that heptane breaks intermolecular interactions in solution, resulting in a simpler spectral band corresponding to the C=O stretching vibrations. Calculations are also used to study interactions in amyl acetateethanol complexes and their spectral manifestations. When the complex formation energies are calculated, this energy increases with the number of molecules, but the average hydrogen bond energy per one bond remains unchanged. The density functional theory (DFT) method is used to analyze molecular structural parameters: Mulliken atomic charge distribution; thermodynamic parameters; molecular electrostatic potential (MEP) surface; atoms in molecules (AIM) analysis; quantum chemical parameters such as reduced density gradient (RDG) and noncovalent interaction (NCI) analysis; electron localization functions (ELF) analysis; and localized orbital locator (LOL) analysis.
Half-Metal Ferromagnetism V-Doped GaN Nanosheet Application in Spintronic Device
Authors: Ismayilova N.A. , Jabarov S.H. , Guliyev J.A.
Published: October 2024

The density functional theory calculations using general gradient approximation (GGA) have been systematically performed to study the electronic structures, the density of states (DOS), and magnetic properties of V-doped GaN nanosheet for different dopant concentrations (2.08% and 4.16%). We conducted the entire study using the Atomistixtool kit code. The electronic properties were improved with the Hubbard values U = 4 eV. V-doped CaN nanosheet exhibits stable ferromagnetic (FM) states relative to corresponding antiferromagnetic (AFM) states. The calculated TC with the V-doping is found to be above the room temperature (RT) one. Calculation results reveal that V-doped nanosheets may be a good candidates for spintronics due to its good half-metal ferromagnetism.
First record of Pterygoplichthys ambrosettii (Holmberg, 1893) (Siluriformes, Loricariidae) in the Mucuri river basin, Brazil
Authors: Salvador Gilberto Nepomuceno , Rosa Gustavo Ribeiro , Frederico Renata Guimarães , Santos Mara Luiza de Almeida , Santos Guilherme Moreira
Published: October 2024

Pterygoplichthys ambrosettii (Holmberg, 1893) is indigenous to the middle/lower Paraná basin and has been intentionally introduced to several continents, including North America, Asia and Europe. In Brazil, the presence of allochthonous P. ambrosettii has been documented in the Upper portion of Paraná River, São Francisco River, and Doce River. This study aims to report the ﬁrst documented occurrence of P. ambrosettii in the Mucuri river basin, located in the municipality of Mucuri, Bahia, Brazil.
Effect of copper doping on zinc oxide for potential use in nanowire devices
Authors: Hussain Sazzad , Carley L. Richard
Published: October 2024

Zinc oxide is a promising material in semiconductor research owing to its exceptional properties including wide band gap and high carrier mobility. We observe the effect of copper (a promising acceptor species) doping properties of zinc oxide using Density Functional Theory (DFT). Carrier concentration calculations reveal that the copper doping leads to a p-type semiconductor with an increase in hole concentration to the order of 1018 cm−3. The resultant structure is used to build junctionless nanowire transistors. These nanoscale devices exhibit excellent characteristics including a diameter-normalized on-current of more than 500 μA/μm and an on-current to off-current ratio of greater than 5 × 106 for select configurations. In addition, several design parameters are varied, and guidelines are presented that offer improved performance.

Graphical abstract

Fig. a Copper-doped zinc oxide junctionless transistor (UL represents source/drain underlap) b Cross-sectional view c Drain current vs gate voltage for one of the devices
The Problem of Scale Contamination and Construct Validity in Mental Health, Social Science and Spirituality-Related Research
Authors: Bambling Matthew
Published: October 2024

This article explores the pervasive issue of scale contamination and its impact on construct validity in mental health, social science, and spirituality-related research. Scale contamination occurs when measurement tools designed to assess one specific domain inadvertently incorporate elements from unrelated constructs, leading to confusion regarding what the scale is actually measuring. The blending of distinct psychological domains, such as depression, anxiety and well-being, undermines measurement precision, leading to skewed research conclusions and misguided clinical practices. The failure to detect or address contamination can perpetuate errors in treatment efficacy, particularly in areas such as mental health and spirituality, where precise measurement is crucial. This article emphasizes the importance of ensuring construct validity, which refers to the accurate measurement of specific concepts such as moral injury or posttraumatic stress disorder, and it highlights the risk of conflating distinct constructs. The widespread use of contaminated scales, often adopted without critical evaluation, poses a significant threat to the integrity of research outcomes. In order to address these challenges, this study advocates for rigorous scale development and validation processes, encouraging researchers, peer reviewers and journal editors to scrutinize the psychometric properties of scales. By ensuring that scales measure only the intended constructs, future research can produce more accurate and meaningful results, leading to improved clinical interventions and policy decisions.
Tante Stella’s Quince Sweetmeat
Authors: Levy Audrey
Published: October 2024

A survey of the history of the quince in Europe including appearances in English literature along with descriptions of some famous concoctions such as brimbriyo (Sephardic), cotognata (Sicily), cotignac (France), membrillo (Spain), kythonpasto (Greece).
Calcium carbonate-based antibacterial coating for improved biocompatibility in endoprosthetic implants
Authors:   Y. Gagarin Saratov State Technical University, Kirsanov Dmitrij , Kirsanov Vasilij ,   Affiliated Branch № 6 of the Federal State Budgetary Institution "A.A. Vishnevsky NMRC VMT", Andriyanova Nadezhda , Pichkhidze Sergej
Published: October 2024

This article addresses a critical challenge in modern endoprosthetics: enhancing the biocompatibility of implanted materials to prevent and manage periprosthetic infec-tions. Current literature identifies periprosthetic infection as a leading cause of revision surgeries, with material incompatibility contributing to postoperative complications and increased mortality rates. To tackle this issue, a specialized coating for implant surfaces based on inorganic calcium carbonate is proposed. This material is selected for its fa-vorable biochemical properties, including a highly developed specific surface area and biocompatibility with human tissues. To enhance antibacterial properties, zinc and the antibiotic vancomycin are incorporated as modifiers. Research efforts have led to the development of a 3D model of an elbow joint endoprosthesis, ensuring reliable fixation within the bone structure. The stress-strain characteristics of the endoprosthesis are examined, determining safety margins for its components. A biocompatible coating com-posed of calcium carbonate is synthesized and modified with antibacterial agents. Imag-es of the coating's microparticles are obtained, and a biochemical analysis is performed using common postoperative pathogens, revealing zones of microorganism suppres-sion. The findings confirm an improved biocompatibility level, demonstrating the effec-tive antibacterial properties of the developed coating, with promising implications for preventing periprosthetic infections.
Analisis Pemahaman Agama dan Etos Kerja Islami Terhadap Kinerja Civitas Akademika ITB Ahmad Dahlan
Authors: Azhar Nurlis , Fathurrahman Aldi
Published: October 2024

This research examines the influence of religious understanding and Islamic work ethic on employee performance at ITB Ahmad Dahlan Jakarta. Religious understanding and Islamic work ethic are measured through Likert scales and analyzed using Partial Least Square (PLS). The results indicate that religious understanding and Islamic work ethic positively contribute to enhancing employee performance. The implications highlight the importance of attention to religious understanding and the application of Islamic work ethic to achieve optimal performance in the workplace. These findings have strategic implications for human resource development in similar organizations.
ВИКОРИСТАННЯ МЕТОДОЛОГІЙ IDEF0 ТА DFD ПРИ ПРОЕКТУВАННІ ПРОГРАМНОГО ЗАСОБУ ВЕДЕННЯ ЕЛЕКТРОННОЇ КОМЕРЦІЇ
Authors: Москаленко С. С. , Котлик С. В. , Корнієнко Ю. К.
Published: October 2024

Анотація:  Дана стаття присвячена використанню методологій IDEF0 (Integrated DEFinition) та DFD (Data Flow Diagrams) у процесі проектування програмного засобу для ведення електронної комерції. Вказано, що IDEF0 дозволяє моделювати бізнес-процеси у вигляді ієрархічної структури функцій, що сприяє зрозумінню зв'язків між ними та оптимізації процесів. DFD використовується для аналізу потоків даних та їх обробки у системі, що є важливим при проектуванні програмного засобу.
У роботі розглядається сучасний стан електронної комерції та визначаються основні вимоги до програмного забезпечення для її підтримки. Далі досліджується методологія IDEF0, її принципи та основні концепції, які можна використовувати для моделювання бізнес-процесів в електронній комерції. Також, у роботі детально аналізується методологія DFD, її етапи та засоби, які вона надає для моделювання потоків даних у програмному забезпеченні.
Основна увага приділяється практичному застосуванню цих методологій у проектуванні програмного засобу. На конкретних прикладах показано, як можна використовувати IDEF0 та DFD для аналізу, проектування та реалізації програмного засобу для ведення електронної комерції. Робота включає в себе опис процесу моделювання бізнес-процесів, аналіз вимог до програмного забезпечення та проектування структури даних.
Дослідження показало, що використання методологій IDEF0 та DFD при проектуванні програмного засобу ведення електронної комерції дозволяє ефективно моделювати бізнес-процеси та аналізувати потоки даних у системі, що сприяє покращенню якості розробки та забезпеченню високої функціональності програмного засобу. Робота може бути корисною для студентів, викладачів та спеціалістів у галузі програмування та інформаційних технологій, які цікавляться розробкою програмного забезпечення для електронної комерції.