bluuebunny/crossref_metadata_2025 huggingface dataset:
El destino post mortem de los bienes digitales: la herencia y el testamento digital. ¿Se respeta la memoria defuncti?
Authors: Adán Vega Álvaro
Published: July 2024

Con la era de internet han aparecido nuevos bienes y servicios digitales y otros, que antes tenían soporte físico, se han digitalizado. A su vez, se ha instaurado una estructura telemática en las comunicaciones y, con la expansión digital de las redes sociales, ha surgido una nueva manifestación de la personalidad: la identidad digital. Ante este escenario, surge el interrogante sobre cuál debe ser el destino de todos estos bienes, productos y contenidos digitales tras la muerte de su titular. Este artículo pretende ofrecer una solución holística sobre esta materia. Para ello, se articulan diferentes mecanismos sucesorios atendiendo a la distinta naturaleza de los bienes digitales y se analiza el marco normativo aplicable para cada tipo de sistema hereditario. Se estudian los conceptos de la «herencia digital» y del «derecho al testamento digital» y se aborda un estudio crítico de la legislación vigente al respecto. Todo ello desde una perspectiva doctrinal. Finalmente, se pone de manifiesto la necesidad de velar por la memoria defuncti y de respetar el derecho a la intimidad pretérita del difunto.
La fiscalidad ante la tokenización de activos
Authors: Muñiz Pérez Julio César
Published: July 2024

La tokenización representa en estos momentos el reto más importante de la fiscalidad de la economía digital. Partimos de la original desambiguación del término con la moneda digital para llegar a su regulación europea, la limitada regulación en España y los supuestos de aplicación que se están dando por la Dirección General de Tributos. La situación actual convierte la tokenización en una vía de elusión, evasión y erosión de bases imponibles. Para los Estados es un ámbito que requiere de su atención tanto a nivel interno como internacional. Un ámbito que generará competencia fiscal, pero también mejorará la competitividad de las empresas y podrá ser una herramienta de atracción de inversión extranjera. Esta temática centrará sin duda los esfuerzos de regulación y control tanto en el ámbito europeo como en el nacional e internacional en los próximos años.
Desvendando Estratégias de Comunicação Empresarial: Legibilidade, Gerenciamento de Resultados e Impressão
Authors: Pain Patrícia , Vendruscolo Maria Ivanice , Bianchi Márcia , Rigoni Briscia Oliveira Prates , Maria Michele Monteiro Lirio
Published: July 2024

Objetivo: Este trabalho tem como objetivo analisar a relação entre o Gerenciamento de Impressão, o Gerenciamento de Resultados e a legibilidade dos Formulários de Referência e Formulários 20-F divulgados por empresas brasileiras com American Depositary Receipts (ADR) no período de 2015 a 2019.
Método: O estudo utiliza uma abordagem empírica, aplicando métodos científicos quantitativos de estatística descritiva, correlação e regressão para examinar dados coletados dos documentos empresariais.
Resultados: Os principais resultados indicam que tanto o Gerenciamento de Impressão quanto o Gerenciamento de Resultados têm impacto na legibilidade dos Formulários de Referência. Estratégias de manipulação da legibilidade, como a alteração da complexidade sintática, são empregadas para influenciar a percepção dos leitores.
Originalidade/Relevância: Este estudo preenche uma lacuna teórica ao explorar a interseção entre o Gerenciamento de Impressão, o Gerenciamento de Resultados e a legibilidade de documentos empresariais. A relevância acadêmica reside na compreensão mais profunda das práticas de comunicação estratégica adotadas pelas empresas.
Contribuições teóricas/metodológicas: As implicações teóricas deste estudo incluem o entendimento aprimorado das estratégias de manipulação da legibilidade e seu impacto nas percepções dos leitores. O estudo destaca a importância de considerar simultaneamente o Gerenciamento de Impressão e o Gerenciamento de Resultados ao analisar a Legibilidade dos relatórios corporativos.
Contribuições sociais/para a gestão: As descobertas deste estudo podem auxiliar gestores, investidores e reguladores a reconhecerem a influência das estratégias de comunicação nas informações financeiras divulgadas pelas empresas. Isso pode levar a uma análise mais crítica das informações e a uma tomada de decisão mais informada no ambiente empresarial.
Theoretical studies of the gas engine fuel supply process
Authors: Zhamburin Zhakslyk ,   State Agrarian University of the Northern Trans-Urals, Storozhev Ivan
Published: July 2024

This article is devoted to theoretical studies of the fuel supply process of a gas engine. It examines the main aspects of the functioning of the fuel supply system, the influence of fuel supply parameters on the efficiency of the engine, as well as problems and solutions. The authors analyze various theoretical models, describe the basic principles of fuel injection systems and discuss current trends in the development of this field. The article is intended for specialists in the field of automotive, mechanics and thermal engineering, as well as for anyone interested in modern technologies in the field of motor transport. Theoretical studies of the gas engine fuel supply process are of great importance in the modern automotive industry. The efficiency of a gas engine depends directly on the correct selection of fuel supply parameters, which makes this topic relevant for research and development. The article analyzes in detail various aspects of the fuel supply process, such as fuel dosing, spraying, system pressure, as well as interaction with other engine systems So, the presented article is a valuable contribution to the field of gas engine fuel supply research and can be useful both for specialists involved in the development of gas engines and for a wide range of readers interested in modern technologies and innovations in the field of automotive technology. Keywords: GAS ENGINE, FUEL SUPPLY, FUEL INJECTION SYSTEM, AGROENGINEERING, INNOVATIONS IN THE FUEL SUPPLY SYSTEM, AGROTECHNICS, FUEL SUPPLY PARAMETERS
STUDYING THE DIVERSITY OF LENTIL VARIETIES BY ALLELES OF THE EARLY FLOWERING GENE LcELF3 USING MOLECULAR MARKERS
Authors: Kuzbakova М. М. , Khassanova Г. Ж. , Jatayev S. А. , Ten Е. А.
Published: July 2024

Lentils are one of the most widespread leguminous crops in the world and now Kazakhstan is also experiencing a significant expansion of acreage. Howev-er, late sowing is unacceptable for this crop, since in this case the photoperiod effect and drought lead to loss of crop samples if the flowering period of lentil plants is not optimized. The genes controlling early flowering (EFL3) are associ-ated with the rate of growth and the beginning of flowering and are independent of the length of daylight. In this study, the presence of the early flowering gene LcELF3 was analyzed in 76 collection samples of lentils. As a result of PCR am-plification and sequencing of the LcELF3 gene using the Sanger method, genetic polymorphism was detected and codominant SNP (Single Nucleotide Polymor phism) markers were developed. Further testing of collection samples of lentils by ASQ genotyping allowed us to identify 36 samples with homozygous geno-type aa (late flowering) and 40 samples with homozygous genotype bb (earlier flowering). The use of factor analysis of the productivity elements of lentil sam-ples bearing favorable bb alleles of the early flowering gene LcELF3 made it pos sible to conduct a visual analysis for the studied years. Thus, using the example of lentils, the possibility of sampling samples containing favorable bb alleles of the LcEFL3 gene, controlling early flowering, which are necessary to increase its yield in conditions of prolonged spring and short summer season in the dry steppe zone of Northern Kazakhstan, is shown.
ҚАЗАҚТЫҢ АҚБАС ТҰҚЫМДЫ БҰҚАШЫҚТАРЫНЫҢ РАЦИОНЫНДАҒЫ ПРОТЕИН ДЕҢГЕЙІНІҢ ОЛАРДЫҢ ӨСУІ МЕН ДАМУЫНА ӘСЕРІ
Authors: Ускенов Р. Б. , Конджа Ю. , Еңсебек Т. Д.
Published: July 2024

Бұл мақалада төмен сапалы ірі азықты рационға протеин қосу арқылы ірі қара малдың азықты тұтынуы мен өнімділігін жақсарту бойынша зерттеу нәтижелері келтірілген. Тәжірибе жүргізу үшін 8 айлық қазақтың ақбас тұқымды 21 бас бұқашықтары іріктелді. Сынақ аяқталғаннан кейін бұқашықтардың жасы 12 ай болды. Бұл зерттеулер рациондағы протеин деңгейінің қазақтың ақбас тұқымды бұқашықтарының өсуі мен дамуына әсерін анықтау мақсатында жүргізілді. Зерттеу барысында рационға 15% протеині бар 2 топтың 5,77 кг құрғақ затты тұтынғаны анықталды, ал 1-ші және 3 топтар, сәйкесінше 7,39 және 6,63 кг құрғақ затты тұтынды, яғни 2-топпен салыстырғанда 1,62 және 0,86 кг жоғары. Құрғақ затты тұтыну сияқты, 2-топтағы орташа тәуліктік өсім (1,14 кг), яғни 1-топтан 0,34 кг жоғары және 3-топтан 0,12 кг төмен болды.
ПРОХОЖДЕНИЕ ФАЗЫ ОНТОГЕНЕЗА, ПРОДУКТИВНОСТЬ ГЕНОТИПОВ ХЛОПЧАТНИКА ПРИ ИХ ВЫРАЩИВАНИИ В УСЛОВИЯХ ЦЕНТРАЛЬНОГО ТАДЖИКИСТАНА
Authors: Садиков А. Т.
Published: July 2024

В повышении урожайности и валового сбора хлопка сырца и других сельскохозяйственных культур в последние годы важнейшее значение приобрела селекция и налаженное семеноводство. Особое внимание при этом уделяется созданию новых сортов и гибридов сельскохозяйственных культур, широкому внедрению наиболее продуктивных сортов и гибридов в производство, значительному улучшению семеноводства за счёт обеспечения производства сортовыми семенами и др. Согласно полученным данным по высоте главного стебля растений хлопчатника на 1 августа (2021-2023 гг.), сорта местной селекции достигли – от 85,6 до 101,9 см, у зарубежной – 75,6 -92,6 см. Количество коробочек к концу вегетации (на 1 сентября) у местных сортов составило – 10,4 -22,4 шт/растение, у зарубежных – 10,9-21,8 шт/растение. У линий Л-1 и Л-2 их число составило – 19,4 -22,6 шт растение, что превосходит стандартный сорт Зироаткор-64 (12,9 шт/растение) на 12,6 шт/растение. Масса хлопка-сырца одной коробочки по всем исследуемым сортам варьирует довольно в широком диапазоне – 5,2-6,6 г. Отклонение по сравнению со стандартным сортом Зироаткор-64 (5,2 г) достигает – 1,4 г. При этом наиболее продуктивными (101,7-145,6 г растение или 84,4- 120,8 ц/га при густоте 83 тыс./га) являются по местным сортам – Кабадиян-30 и Дангара-30, по зарубежным – Cocer-4104, DРL-4158, DP 4025 и NAK-99/1. Изученные линии обладали высокой продуктивностью с 126,5-129,9 г/растение или 104,9      107,8 ц/га.
Amasya Şehrinden Göç Örnekleri: İhsaniye Mahallesi’ne Yerleştirilen Kırım Tatarları Akyazı Köyü Batum Muhacirleri ve Tuzsuz Köyü’nde İskân Edilen Şirvanlılar ile Selanik Mübadilleri
Authors: Hizmetli Zehra
Published: July 2024

Osmanlı Devleti savaşlarda mağlubiyetlerin yaşandığı son dönemlerinde kay-
bedilen topraklardan ayrılan Müslümanların kitlesel göçüyle karşı karşıya kalmış-
tır. Osmanlı Devleti, kendisine sığınan göçmenleri, dönemin şartları ve eldeki im-
kânlar doğrultusunda Anadolu’nun çeşitli bölgelerine iskân etmiştir. Göçmenlerin
Anadolu’da iskân edildiği şehirlerden biri de Amasya olmuştur. Amasya’nın hem
Karadeniz limanlarına yakın olması hem de boş arazilerinin çokluğu, göç edenle-
rin iskânı için tercih edilecek bir merkez olmasını sağlamıştır. Amasya’nın pek çok
köyüne göçmenler yerleştirilmiş, bazen de göçmen iskân edilen yerler ayrı mahalle
ve köy haline getirilmiştir. Makalede Amasya şehrine iskânı gerçekleşen göçmenle-
rin yerleştirildiği üç yerleşim yeri ele alınmıştır. Çalışmada İhsaniye Mahallesi’nde
iskân edilen Tatarlar; Akyazı köyünde iskân edilen Batum muhacirleri; Tuzsuz kö-
yünde iskân edilen Şirvan muhacirleri ve Selanik mübadilleri ele alınmıştır. Göç-
menlerin göç süreçleri araştırılarak Amasya şehrindeki iskânları ortaya konulmaya
çalışılmış ve göç konusunda yapılacak ilmi araştırmalara katkı sunulması amaçlan-
mıştır. Makalede arşiv kaynaklarından ve referans eserlerden yararlanılmış ayrıca
mevcut yerleşimlere ziyaretler de yapılarak, mahalle ve köylerle ilgili değerlendir-
melere yer verilmiştir. Araştırılan yerleşimlerin göç süreçleri, iskânları ve karşılaş-
tıkları problemlerle ilgili sonuçlara ulaşılmıştır. Makalede konunun sınırlandırıl-
ması açısından üç yerleşim yeri ele alınmışsa da Amasya’da halk arasında bilinen
fakat akademik çalışmalara konu edilmemiş diğer yerleşimlerin de araştırılması,
bu konuda yapılacak çalışmalara katkı sunacaktır.
The Energy Sector of the Jewish Yishuv in Palestine during the Late British Mandate
Authors: Milutin Efraim (Effie)
Published: July 2024

This article discusses the energy sector of the Jewish Yishuv in Palestine during the late British Mandate period, from late 1947 to the Declaration of Independence in mid-May 1948. The article examines how the Yishuv’s leaders and those in charge of its energy supply prepared for the British withdrawal from Palestine and the measures taken to ensure the Yishuv's energy needs during this period. Until then, the Mandate authorities had seen to the Yishuv’s energy needs, a responsibility that would now be transferred to the institutions of the Jewish state upon its establishment. Were their actions solely focused on the preparations for war or also on preparations for the creation of the state? Archival and other primary sources were used by the author. In addition to analyzing technical information, the article seeks to highlight the individuals who were involved in preserving and securing the energy supply of the Jewish Yishuv. These were resourceful and visionary individuals who used creativity, initiative, and boldness to enable the Yishuv to solve its problems and to navigate between various political and economic interests and the needs of the economy and the military. They successfully steered the rickety ship of the energy sector during the intercommunal war in Palestine and prepared the infrastructure for the energy sector of a sovereign state after the Declaration of Independence.
AVALIANDO A EFICÁCIA DA TERAPIA COM HORMÔNIO DO CRESCIMENTO EM CRIANÇAS COM DISTÚRBIOS ENDÓCRINOS
Authors: Penna Lucas Eduardo , Lima Neto Aurino Alves de , Rezende Larissa Cardoso , Castro Letícia Silveira de , Muniz Ana Carolyne Santos Freitas
Published: July 2024

A terapia com hormônio do crescimento (GH) é uma abordagem crucial para o tratamento de crianças com distúrbios endócrinos que afetam o crescimento. Esses distúrbios podem resultar de deficiências primárias do GH, como a síndrome de Turner ou a deficiência isolada do GH, ou de condições secundárias, como doenças renais crônicas. A eficácia dessa terapia tem sido extensivamente estudada, visando não apenas a promoção do crescimento linear, mas também melhorias na composição corporal e na qualidade de vida das crianças. Objetivo: Este estudo tem como objetivo realizar uma revisão sistemática da literatura para avaliar a eficácia da terapia com hormônio do crescimento em crianças com distúrbios endócrinos, analisando estudos publicados nos últimos 10 anos. Metodologia: A revisão sistemática foi conduzida conforme o checklist PRISMA. Utilizamos as bases de dados PubMed, Scielo e Web of Science com os descritores: "growth hormone therapy", "pediatric endocrine disorders", "effectiveness", "children", e "randomized controlled trial". Critérios de inclusão foram estudos randomizados controlados, crianças até 18 anos e publicações entre 2012 e 2021. Critérios de exclusão foram estudos em adultos, revisões sistemáticas e estudos não controlados. Resultados: Os resultados destacaram que a terapia com GH demonstrou significativos ganhos de altura em crianças com deficiência do hormônio de crescimento, especialmente quando iniciada precocemente. Além do aumento estatural, observaram-se melhorias na composição corporal, densidade mineral óssea e qualidade de vida. Conclusão: Em síntese, esta revisão sistemática sublinha a eficácia da terapia com hormônio do crescimento como um tratamento efetivo para crianças com distúrbios endócrinos relacionados ao crescimento. A análise dos estudos disponíveis apoia a prática clínica de prescrição do GH, enfatizando seus benefícios não apenas físicos, mas também psicossociais para os pacientes pediátricos afetados.
DOENÇA DE KAWASAKI EM PACIENTES PEDIÁTRICOS: MANIFESTAÇÕES CLÍNICAS E CONSIDERAÇÕES CARDIOLÓGICAS PARA TRATAMENTO
Authors: Matos Isabela Fagundes , Pereira Helena Costa , Melo Isabela Miranda de , Aleixo Thales Pessoa Christo , Abdo Luisa Lisboa
Published: July 2024

A Doença de Kawasaki (DK) é uma vasculite sistêmica aguda que afeta predominantemente crianças menores de cinco anos. A etiologia da DK permanece desconhecida, mas acredita-se que fatores infecciosos e genéticos desempenhem um papel crucial. As manifestações clínicas incluem febre persistente, erupção cutânea, conjuntivite bilateral, alterações nos lábios e na cavidade oral, linfadenopatia cervical e alterações nas extremidades. A preocupação cardiológica é significativa, pois a DK é a principal causa de doença cardíaca adquirida em crianças nos países desenvolvidos. As complicações cardíacas incluem aneurismas de artérias coronárias, miocardite, pericardite e insuficiência cardíaca. A intervenção precoce com imunoglobulina intravenosa (IVIG) e aspirina é essencial para reduzir o risco de complicações cardíacas. Objetivo: compilar e analisar criticamente as manifestações clínicas da Doença de Kawasaki em pacientes pediátricos, com foco nas considerações cardiológicas para tratamento. Metodologia: seguiu o checklist PRISMA. Foram utilizadas as bases de dados PubMed, Scielo e Web of Science para a busca de artigos publicados nos últimos 10 anos. Os descritores utilizados foram: "Kawasaki Disease," "pediatric," "clinical manifestations," "cardiological considerations," e "treatment." Os critérios de inclusão foram estudos que abordaram pacientes pediátricos com DK, publicações em inglês, português ou espanhol e artigos que discutiram manifestações clínicas e complicações cardiológicas. Os critérios de exclusão incluíram estudos de caso isolados, revisões não sistemáticas e artigos que não focaram em aspectos cardiológicos. Resultados: mostraram que a DK se manifesta clinicamente com sintomas clássicos, mas variações atípicas são comuns, complicando o diagnóstico. A incidência de aneurismas de artérias coronárias foi destacada como a complicação mais grave, com impacto significativo na morbidade a longo prazo. Estudos incluídos na revisão enfatizaram a eficácia da IVIG e da aspirina na prevenção de complicações cardíacas, mas também ressaltaram a necessidade de identificar biomarcadores que possam prever respostas ao tratamento. Conclusão: a Doença de Kawasaki apresenta uma variedade de manifestações clínicas que exigem diagnóstico e tratamento precoces para prevenir complicações cardíacas graves. A revisão reforçou a importância da intervenção precoce com IVIG e aspirina, além da necessidade de mais pesquisas para compreender melhor os mecanismos da doença e otimizar o manejo terapêutico. A prevenção e o monitoramento de complicações cardíacas devem ser prioridades no manejo de pacientes pediátricos com DK.
EVASÃO ESCOLAR E GÊNERO NO SUL DO TOCANTINS: OS CONTEXTOS DA COMUNIDADE LGBTQIAPN+ NA EDUCAÇÃO BÁSICA
Authors: Soares Ederson dos Reis
Published: July 2024

O texto teve como propósito principal a análise dos aspectos intrínsecos e extrínsecos que leva a evasão escolar da comunidade LGBTQIAPN+ no universo escolar da Rede Pública de Ensino do Estado do Tocantins. O Bulliyng é destacado como a principal causa de tal problematização e o seu combate é o que se espera para a diminuição de tais ações que se tornou crimes tipificado no Código Penal Brasileiro. O objetivo principal deste estudo foi realizar uma reflexão acerca do que leva as práticas de evasão bem como quais políticas as escolas têm adotada para evitá-las. Assim, a pesquisa foi conduzida utilizando o método hipotético-dedutivo, partindo de uma ideia ampla para chegar a uma conclusão específica. Portanto, conclui-se que grande parte do alto índice de evasão escolar da comunidade LGBTQIAPN+ ocorre graças a falta de política de prevenção ao bulliyng dentro das escolas.
Panorama de la oferta energética en Santa Catarina
Authors: Farias Júlia Ilze de , Ferreira Fernanda Cristina Silva , Moraes Rubia , Medeiros Jeison Francisco de , Agostinetto Lenita
Published: July 2024

La matriz energética desempeña un papel esencial en la gestión energética; es necesario conocerla, planificar cuidadosamente su uso y ofrecer lo necesario para combatir las crisis de abastecimiento que eventualmente surgen. Este trabajo tiene como objetivo presentar información sobre la matriz y la oferta energética del Estado de Santa Catarina. Se realizó una revisión narrativa mediante el análisis de informes publicados por el gobierno federal, organismos de distribución de energía y entidades que hayan realizado estudios en el área, así como publicaciones científicas (artículos y capítulos de libros) que describan el escenario investigado. Se utilizaron como bases de datos Google Académico y SciElo durante el período de junio de 2022 a marzo de 2023. Como resultados, se verificó que Santa Catarina posee diversas fuentes de energía que forman una sólida red energética, sin embargo, aún se requieren inversiones, interconexión entre las fuentes, equilibrio entre las diversas regiones del estado en lo que respecta a la infraestructura y calidad de la energía recibida para lograr una planificación energética adecuada y que promueva la justicia energética.
Retos de los docentes de nuevo ingreso en la educación
Authors: Bernabé Agustín Juan Daniel , Álvarez Botello Julio , Chaparro Salinas Eva Martha
Published: July 2024

En los primeros años al servicio de la docencia, los docentes enfrentan algunas dificultades educativas, culturales, pedagógicas, deportivas, artísticas y/o administrativas dentro de las instituciones donde laboran debido a que en la institución formadora de docentes no fueron abordados esos contenidos dentro de la malla curricular, por lo que, al entrar al mundo laborar algunas habilidades y/o competencias no se lograron desarrollar, por ello se da un análisis de aquellos retos que se enfrentan comúnmente los maestros dentro de sus aulas e institución con la intención de conocer el trabajo dentro del sistema educativo y estar preparado para desarrollar esas competencias con la intención de ofrecer una educación de calidad y cumplir con la misión y visión de la escuela. Para ello se realizó una investigación cuantitativa con corte descriptivo, de la misma manera se validó en el sistema SPSS el instrumento aplicado y la correlación entre las problemáticas que enfrentan los docentes de nuevo ingreso y aquellos con más experiencias, así como la relación entre variables para fundamentar la descripción del trabajo.
Enseñanza Remota de Emergencia en Educación Básica durante el confinamiento por Covid-19, caso de una escuela primaria en México
Authors: Romano Ramírez Juan , Álvarez Botello Julio , Chaparro Salinas Eva Martha
Published: July 2024

La educación remota aplicada durante el confinamiento por el coronavirus provocó consigo diversos cambios en la labor educativa. Debido a esta pandemia las desigualdades en las que vive la población salieron a relucir y en casos extremos se maximizaron. Por este motivo, la presente investigación estableció identificar las acciones que permitieron a los docentes un mayor acceso a la Enseñanza Remota de Emergencia en la educación básica, misma que permitiera identificar las experiencias que permitieron a los docentes propiciar un mayor acceso a la Enseñanza en sus grupos. Para ello se realizó un estudio cualitativo mediante un análisis a través de la aplicación ATLAS.ti 9 a una muestra de estudio para establecer las estrategias y experiencias que contrastan con otros docentes y que hayan obtenido resultados exitosos en su aplicación remota.
Uso de un medio semi-sintético como herramienta para la evaluación del crecimiento vegetativo del hongo ostra Pleurotus Ostreatus
Authors: Ovalle-Ruiz Tania Marieel , Escalante-Garcia Nivia Iracemi , Romo-Rodríguez Pamela
Published: July 2024

Este estudio presenta un nuevo medio semi-sintético para el cultivo del hongo ostra Pleurotus ostreatus, conocido por su capacidad para crecer en sustratos lignocelulósicos. Los métodos de cultivo tradicionales, a menudo poco prácticos para espacios de laboratorio de investigación, son reemplazados por este nuevo enfoque, que implica pulverizar el sustrato y combinarlo con agar bacteriológico. Tras probar diversas formulaciones, se determinó que el medio óptimo era 0.5% de agar con 10% de sustrato. Este método es particularmente ventajoso para evaluar diferentes sustratos, incluidos los residuos lignocelulósicos disponibles regionalmente, y sus combinaciones. El uso de grano invadido con micelio como inoculo aborda tanto restricciones económicas como de tiempo experimental, aprovechando la biomasa micelial presente en cada grano. Este estudio no solo examina la capacidad de invasión micelial de varios sustratos de manera cuantitativa, sino que también aborda las limitaciones de los métodos cualitativos y cuantitativos existentes, que a menudo requieren equipos especializados y extenso tiempo y recursos. Los resultados revelan diferencias significativas en las tasas de extensión apical utilizando diferentes sustratos y combinaciones. La utilidad de la metodología se valida aún más por su capacidad para identificar sustratos propensos a la contaminación, lo que podría generar errores que consuman recursos si no se detectan tempranamente en pruebas tradicionales a gran escala. El análisis estadístico robusto de los resultados fue facilitado por las numerosas repeticiones de cada experimento. Además, el método permitió la observación de primordios y estructuras reproductivas durante la fase reproductiva del hongo. Se requiere un mayor control y monitoreo de las variables ambientales para establecer valores de productividad, pero el potencial de esta metodología para evaluar la productividad del hongo en varios sustratos es prometedor.
Toward on-demand measurements of greenhouse gas emissions using an uncrewed aircraft AirCore system
Authors: Zhu Zihan , González-Rocha Javier , Ding Yifan , Frausto-Vicencio Isis , Heerah Sajjan , Venkatram Akula , Dubey Manvendra , Collins Don , Hopkins Francesca M.
Published: July 2024

Abstract. This paper evaluates the performance of a multirotor uncrewed aircraft and AirCore system (UAAS) for measuring vertical profiles of wind velocity (speed and direction) and the mole fractions of methane (CH4) and carbon dioxide (CO2), and it presents a use case that combines UAAS measurements and dispersion modeling to quantify CH4 emissions from a dairy farm. To evaluate the atmospheric sensing performance of the UAAS, four field deployments were performed at three locations in the San Joaquin Valley of California where CH4 hotspots were observed downwind of dairy farms. A comparison of the observations collected on board the UAAS and an 11 m meteorological tower show that the UAAS can measure wind velocity trends with a root mean squared error varying between 0.4 and 1.1 m s−1 when the wind magnitude is less than 3.5 m s−1. Findings from UAAS flight deployments and a calibration experiment also show that the UAAS can reliably resolve temporal variations in the mole fractions of CH4 and CO2 occurring over periods of 10 s or longer. Results from the UAAS and dispersion modeling use case further demonstrate that UAASs have great potential as low-cost tools for detecting and quantifying CH4 emissions in near real time.
Reprocessing the Pioneer Venus radio occultation data
Authors: Pätzold Martin , Hahn Matthias , Oschlisniok Janusz , Peter Kerstin , Tellmann Silvia
Published: July 2024

RIU-Planetary Research is reprocessing original data from the Pioneer Venus Orbiter radio science experiment ORO which were recorded between 1979 and 1988. These valuable raw open-loop data are available from the PDS (Planetary Data System). However, the original processed atmospheric and ionospheric profiles from the Venus atmosphere are not available on the PDS.A limited selection of original ORO profiles, primarily comprising electron density profiles, with only a few temperature profiles, was obtained from an NSSDC server and published by Withers et al. (2020) on a Boston University server.We are using state-of-the-art software code along with an updated version of the Venus gravity field (Konopliv et al., 1999) and newly processed PVO orbit data provided as SPICE kernels.The longer open-loop observation sets consist of ingress data (at two-way) and egress data (at one-way). The uplink was performed at S-band, while the downlink was coherent dual-frequency S-band and X-band. The X-band downlink was activated just before entering occultation, resulting in a relatively short baseline.We shall present atmospheric and ionospheric profiles derived from S-band and differential Doppler recordings, respectively, processed from the original Pioneer Venus Orbiter raw open-loop data sets. We will then compare these profiles with VEX-VeRa radio occultation profiles obtained under comparable observation conditions, as well as with the few existing original PVO profiles retrieved from the Boston University server account (Withers et al., 2020).The VEX-VeRa profiles show excellent agreement with the reprocessed ORO profiles under similar observation conditions. However, the few original ORO profiles exhibit a noticeable altitude shift of several kilometers, most likely caused by the less precise PVO orbit solution available at the time of observation.
Prospects of stellar occultations with robotic telescopes
Authors: Leiva Rodrigo , Fuentes Cesar , Jordán Andrés , Brahm Rafael , Suc Vincent , Avdellidou Chrysa , Delbo Marco
Published: July 2024

Stellar occultations are influential for determining shapes, sizes, and rotation states, as well as characterizing the binary population, ring systems,and debris. Additionally, occultations are a source of high-precision astrometry.I will present a new project to implement a network of telescopes dedicated to observing stellar occultations by Solar System objects, including trans-Neptunian objects and asteroids. Given the fast cadence and absolute timing capabilities, the telescopes will also be used to monitor lunar impact flashes provoked by impacts of meteoroids onthe surface of the Moon.A three-year initial phase has been funded and right on time to leverage the Gaia astrometric catalog andthe Legacy Survey of Space and Time (LSST) on what can be qualified as the golden age of occultationstudies.
Phase curve wavelength dependency as revealed by shape- and geometry-corrected asteroid phase curves
Authors: Wilawer Emil , Muinonen Karri , Dagmara Dagmara , Kryszczyńska Agnieszka , Colazo Milagros
Published: July 2024

Through the use of inverse methods, we investigated the photometric properties of 35 well-observed asteroids by combining dense ground-based and sparse ATLAS survey data. Our rigorous analysis allowed us to derive phase curve parameters that were corrected for shape and geometry, providing insights into the waveleMilagngth dependence of asteroid photometry. Notably, we discovered distinct domains (G1, G2) for cyan and orange filters among S-complex asteroids, indicating wavelength sensitivity. For other asteroids, significant uncertainties exist, or their distributions of phase curve parameters overlap, making it challenging to draw definitive conclusions on wavelength dependence. This effect can be explained by considering the known correlation between geometric albedo and phase curve shape: higher albedo corresponds to flatter phase curves, while lower albedo corresponds to steeper phase curves. In cases of equal albedo, asteroids with red spectral slopes exhibit a more pronounced opposition effect in red filters, while those with blue spectral slopes show it in blue filters.Analyzing the phase curve parameters enabled us to distinguish between more likely rotational pole solutions and estimate taxonomic complexes for unclassified objects. Additionally, examining color slope variations with phase angle revealed significant differences at smaller angles, albeit with increased uncertainties due to limited data points. While caution is necessary when extrapolating phase curves at such angles, comparisons to previous observations of (433) Eros highlight the importance of further exploration in this area.We stress the importance of cautious interpretation and acknowledge the potential variability of observed effects across different filters. Future investigations, supported by comprehensive multi-wavelength observations, offer the potential to uncover the intricate details of asteroid photometry and enhance our understanding of the diverse characteristics of asteroids.
Reflectance and Raman spectroscopy of anhydrous carbonates for their identification at the surface of planetary bodies.
Authors: Schmitt Bernard , Beck Pierre , Mandon Lucia , Leclef Appoline , Teixeira Florent , Lanson Martine , Montes-Hernandez German
Published: July 2024

Introduction Carbonate minerals are ubiquitous on Earth, on all terrestrial planets and on many satellites and small bodies, in particular asteroids. These minerals are identified through remote sensing using either visible and near infrared reflectance spectroscopy but also since recently Raman spectroscopy. These techniques, as well as mid-infrared spectroscopy, are also very frequently used in the laboratory to identify the various anhydrous, hydroxylated and hydrated carbonates phases.In this talk we first report on an extensive ongoing experimental study of all types of carbonates by Visible, near and mir infrared and Raman spectroscopy of series of natural and synthetic samples, coupled with DRX and EPMA analysis to determine their mineralogical purity and their effective composition. We will focus here on the anhydrous calcite and dolomite groups including most of the rhombohedral carbonates.In the second part we report on the detailed analysis of their spectra in order to finely determine the band positions, width and intensity of the bands as a function of composition (Ca, Mg. Fe, …). We also provide a vibration mode attribution to all the bands. Coupled with an exhaustive compilation and a critical review of the literature on the spectroscopic properties of these carbonates, this allows us to build accurate band list data to be ingested in the new band list database of the SSHADE database infrastructure (www.sshade.eu). These absorption and Raman spectral information for individual minerals as well as for solid solutions (e.g. the magnesite-siderite solid solution) are invaluable for the community, and are a type of information still critically missing to easily interpret laboratory, field or astronomical spectra. Carbonate samplesA large set of samples (over 100) covering the anhydrous calcite and dolomite groups and including most of the rhombohedral carbonates (calcite, dolomite, ankerite, magnesite, siderite, rhodochrosite, smithsonite, sphaerocobaltite, kutnohorite, otavite and gaspeite) has been collected for this study. Most of the samples are of natural origin with a variety of composition, but a few pure minerals have been synthesized at ISTerre laboratory to complete the set, especially some hard-to-find natural end-members. They come from various sources, from the OSUG collection, from dealers and local collectors as well as from personal field collection in the mountain ranges around Grenoble. For the reflectance spectra part of the mineral have been grinded and sieved to either
Simulating Mercury’s environment - watchout for Magnesium and Space Weathering!
Authors: Besse Sébastien , Caminiti Emma , Leon-Dasi Mireia , Doressoundiram Alain
Published: July 2024

Summary:  Mercury’s surface studies are difficult from ground-based observations and from the limited number of missions that have explored the Hermean environment. Characterising further Mercury’s properties from laboratory measurements is a great and timely opportunity given BepiColombo’s arrival in late 2025. Through spectral measurements of Mercury analogues, our goal is to explore the mineralogical properties of Mercury’s surface and its dependency on orbital measurements and Mercury’s environment. Through dedicated measurements, we have explored the variability of spectral properties as a function of observation conditions and irradiation level. Our analysis shows that the variability of spectral properties with varying illumination conditions can be correlated to specific compositions, particularly the magnesium content. We notice that spectral slopes increase with higher magnesium content and higher phase angle. Similarly, we noticed that the spectral slopes increase with irradiations of samples and reach a plateau. This puts important constraints on the capability of orbital measurements to observe spectral variabilities that are linked to recent geological phenomena and specific mineralogical and elemental compositions.High irradiation effects on reflectance spectroscopy: We used 20 keV He+ with fluences up to 5 x 1017 ions/cm2 to simulate ion irradiation reaching the surface. Terrestrial ultramafic lava already identified as good analogues for Mercury were used: a boninite, a basaltic komatiite and a komatiite. Spectra were acquired in the visible to mid-infrared (VMIR) wavelength range, between 0.4 and 16 μm. Spectral alterations induced by irradiation are observed in the visible to near-infrared (VNIR) with an exponential darkening, a reddening and a flattening of spectra. Above a certain irradiation dose (1 x 1017 ions/cm2 in our conditions), the darkening reaches a plateau and the reddening as well. In the mid-infrared (MIR) we observe a shift of Reststrahlen bands towards longer wavelengths (
The formation of giant planets in disks with consistent planetesimal and embryo formation
Authors: Bauernfeind Anna , Burn Remo , Voelkel Oliver , Klahr Hubert
Published: July 2024

Planetary population synthesis is a tool to investigate planet formation by using a simplified global end-to-end planet formation model to create artificial planet populations. This makes it possible to statistically compare model predictions with observations, and to better understand the physical mechanisms of planet formation and their interactions. This project uses the Bern population synthesis model for planetary formation but pushes its boundaries to the earlier stage of planetesimal and embryo formation. The model combines the two-population model (Birnstiel et al. 2012) for the solid evolution with a pebble-flux regulated planetesimal formation (Lenz et al. 2019), and then grows planetary embryos from the planetesimals (see Voelkel et al. 2021, paper II). This eliminates the strong assumption of where to place initial planetary embryos in planet formation models. Further, we use a modern disk model including an MRI-like alpha transition, weak disk winds (Weder et al. 2023), and thermal torques for planetary migration. Parameters like the planetesimal size and planetesimal fragmentation velocity were varied, and the influence of migration and pebble accretion on the planet evolution were also studied. We find a significant under-representation of giant planets, especially cold giants, in all our populations. Only by excluding orbital migration, a sufficient number of cold giant planets could form. Reducing the planetesimal fragmentation velocity or increasing the efficiency of pebble-to-planetesimal conversion all strongly reduce the fraction of giants. These results highlight the added complexity of including a self-consistent planetesimal and embryo formation in global planet formation models.Figures: Mass-distance evolution of the formed planets in two systems of the nominal population. Violet tracks mean the planet formed early, yellow tracks that it formed late. Horizontal lines mean the planet was ejected from the system. Dotted lines mean the planet was destroyed (ejected, accreted by star, collided with another planet) References:Emsenhuber, A., Mordasini, C., Burn, R., Alibert, Y., et al. 2021, A&A 656, A69Lenz, C.T., Klahr, H. & Birnstiel, L. 2019, ApJ 874 A36Völkel, O., Deienno, R., Kretke, K., & Klahr, H. 2021, A&A 645, A132 

Weder, J., Mordasini, C., Emsenhuber, A. 2023, A&A 674, A165
Starshades and interferometry for exoplanet imaging
Authors: Aime Claude , Theys Céline , Prunet Simon
Published: July 2024

We can hope that, in a near future, external occulter systems, called Starshade will allow the detection of exo-Earth type exoplanets, but as unresolved points.  The telescopes used will be of a few meters.To get real multi-pixels images of  exoplanets,  interferometry with diluted apertures separated from each other by several hundred meters will be necessary. Can we combine interferometry and external occulters? This is the problem that we examine in our work.
Impact disruption of Bjurböle porous chondritic projectile
Authors: Kohout Tomas , Pajola Maurizio , Soini Assi-Johanna , Lucchetti Alice , Luttinen Arto , Duchêne Alexia , Murdoch Naomi , Luther Robert , Chabot Nancy , Raducan Sabina , Sánchez Paul , Barnouin Olivier , Rivkin Andrew
Published: July 2024

Bjurböle meteorite fall occurred in the evening hours of March 12, 1899 and was witnessed by many residents across the Baltic region. The terminal mass fell south of Finnish city of Porvoo (approx. 50 km east of Helsinki) on a frozen sea bay. A single 4-m sized hole was found in the ice surrounded by an 8-m circle of fractured ice and a 20-25 m rim of splashed water and sediment. The largest fragment recovered from the impact site weighed 80.2 kg and was located within the bottom sediment approximately 6-7 m below the ice surface. Several other fragments in the range of 10-20 kg were also recovered along with countless smaller fragments.  The ~200 m/s impact of a single 400-kg Bjurböle L/LL ordinary chondrite meteorite onto sea ice resulted in the catastrophic disruption of the projectile. This resulted in a significant fraction of decimeter-sized fragments that exhibit power law cumulative size and mass distributions (Fig. 1). This size range is underrepresented in impact experiments and asteroid boulder studies. Understanding of the impact disruption mechanism of planetary bodies and knowledge of fragment size and shape distributions are important to planetary defense mitigation efforts.The Bjurböle projectile fragments share similarities in shape (sphericity, and roughness at small and large scale) with asteroid boulders (Fig. 2). However, the mean aspect ratio (3D measurement) and apparent aspect ratio (2D measurement) of Bjurböle fragment is 0.83 and 0.77, respectively, indicating that Bjurböle fragments are more equidimensional compared to both fragments produced in smaller scale impact experiments and asteroid boulders (Fig. 3). These differences may be attributed either to the fragment source (projectile vs. target), to the high porosity and low strength of Bjurböle, to the lower impact velocity compared with typical asteroid collision velocities, or potentially to fragment erosion during sea sediment penetration or cleaning.Fig. 1. Cummulative frequency size (longest axis) and mass distribution of the Bjurböle fragments.Fig. 2. Morphology comparison of the Bjurböle fragments and asteroid boulders.Fig. 3. Dimmensions and apparent aspect ratio histograms of the Bjurböle fragments.
Multi-Point Bounce Trajectory Planning on the Complex Surface of an Asteroid for Resource Exploitation
Authors: Pan Qian , Li Xiangyu , Qiao Dong
Published: July 2024

Asteroid exploration is a hot topic in current deep space exploration. Deploying a rover on the surface of an asteroid for reconnaissance is an important means to enhance the scientific return of exploration missions. Bouncing mobility, with its advantage of high maneuverability in weak gravity environments, is an effective surface mobility method. Bounce trajectory planning plays a key role in achieving effective bouncing mobility. This paper focuses on bounce trajectory planning for a rover on the irregular surface of an asteroid in the context of surface reconnaissance exploration. Firstly, based on the concept of dimensionality reduction, the three-dimensional complex shape of the asteroid is mapped to a two-dimensional height map using longitude and latitude. Then, a single-hop model is established for the rover's known starting and target points. Based on the two-dimensional map of the asteroid and the rover's single-hop model, the reachable range of a single hop is analyzed. An A* algorithm is combined to propose a single-hop-based bounce trajectory planning method. Next, to fully utilize the energy of the rover's initial jump and maximize its reachable distance in a single hop, a multi-hop model is established for the rover's known starting and target points. The reachable range of multiple hops is also analyzed, and a multi-hop-based bounce trajectory planning method is proposed. Finally, a comparative analysis is conducted between the single-hop-based and multi-hop-based trajectory planning methods. The impact of asteroid surface parameters on the rover's bouncing capability is evaluated to guide the deployment and design of asteroid exploration missions. AcknowledgmentsThe authors acknowledge support from Young elite scientist sponsorship program by CAST (No. YESS20210296), the Beijing Institute of Technology Research Fund Program for Young Scholars (XSQD-202101012), Beijing Institute of Technology Research Fund Program for Innovative Talents (No. 2022CX01008).
Thermal Analysis of 162173 Ryugu and the Moon
Authors: Rognini Edoardo , Zinzi Angelo , Camplone Veronica , Angrisani Marianna , Vadrucci Monia
Published: July 2024

Introduction. The surface temperatures of asteroid Ryugu and the Moon have been measured by the TIR instrument onboard the Hayabusa 2 mission of JAXA [1] and the DIVINER of NASA's Lunar Reconnaissance Orbiter [2]. The comparison between observed and calculated temperature allows the retrieval of thermophysical properties of an object; this is a link with the primordial solar system, since the physical structure and composition can be retrieved. Furthermore, the thermal inertia causes an asimmetric thermal emission and non gravitational perturbation on orbital parameters (Yarkovsky effect). In the lunar case, an indication for future landing sites may be also possible.Methods. We developed a thermophysical model for the calculation of surface temperature as function of thermal inertia and emissivity [3]. The temperatures can be projected on the target shape model with the MATISSE tool [4].Results and future work. Some theoretical lunar temperatures have been checked with the measurements of the DIVINER instrument. In the future we want to study the permanently shadowed areas. The comparison theoretical-observed temperature for Ryugu will allow to properly modelize the rubble-pile asteroids.References.[1] Okada, T., et al. (2017), Space Sci. Rev., 208[2] Paige, D. A., et al. (2010), Space Sci. Rev., 150[3] Rognini, E., et al. (2019), Journal of Geophysical Research: Planets, 125[4] Zinzi, A., et al. (2016), Astronomy and Computing, 15
Probe the regolith characteristics of asteroids from multi-epoch infrared light curves
Authors: Yu Liang-Liang
Published: July 2024

Regolith, materials of mixture of dusts and boulders, are believed to widely exist on asteroidal surface. However, evidences from recent asteroidal space missions show that regolith on different asteroids can be quite different. There are asteroids that have regolith dominated by fine dust, for example, 433 Eros. There are also asteroids with regolith dominated by porous boulders, for example Ryugu and Bennu. Besides, there exist asteroids, where part of the surface are covered by fine dust, and the other regions are boulders with different size and porosity, for example Itokawa.The physical status of asteroidal regolith can tell us inforation about the origin and evolution of the asteoids. Here we report a method to probe the regolith characteristics of asteroids from multi-epoch infrared light curves, from which the surface albedo, roughness, thermal inertia or mean grain size or boulder porosity can be investigated. Besides, through analysis of multi-epoch infrared light curves, surface heterogeneity can be also evaluated. These physical characteristics of regolith can be helpful for study about the origin and evlution of asteroids.