bluuebunny/crossref_metadata_2025 huggingface dataset:
A Hot Ultraviolet Flare on the M Dwarf Star GJ 674
Authors: Froning Cynthia S. , Kowalski Adam , France Kevin , Loyd R. O. Parke , Schneider P. Christian , Youngblood Allison , Wilson David , Brown Alexander , Berta-Thompson Zachory , Pineda J. Sebastian , Linsky Jeffrey , Rugheimer Sarah , Miguel Yamila
Published: January 2019

As part of the Mega-Measurements of the Ultraviolet Spectral Characteristics of Low-Mass Exoplanetary Systems Hubble Space Telescope (HST) Treasury program, we obtained time-series ultraviolet spectroscopy of the M2.5V star, GJ 674. During the far-ultraviolet (FUV) monitoring observations, the target exhibited several small flares and one large flare (E
FUV = 1030.75 erg) that persisted over the entirety of an HST orbit and had an equivalent duration >30,000 s, comparable to the highest relative amplitude event previously recorded in the FUV. The flare spectrum exhibited enhanced line emission from chromospheric, transition region, and coronal transitions and a blue FUV continuum with an unprecedented color temperature of TC
 ≃ 40,000 ± 10,000 K. In this Letter, we compare the flare FUV continuum emission with parameterizations of radiative hydrodynamic model atmospheres of M star flares. We find that the observed flare continuum can be reproduced using flare models but only with the ad hoc addition of a hot, dense emitting component. This observation demonstrates that flares with hot FUV continuum temperatures and significant extreme-ultraviolet/FUV energy deposition will continue to be of importance to exoplanet atmospheric chemistry and heating, even as the host M dwarfs age beyond their most active evolutionary phases.
Historia y poesía: el mito de Píramo y Tisbe en el Quijote
Authors: Sánchez Alberto
Published: February 2019

No disponible.
Libertad de percepción y realidad variable: algunas notas sobre la semiología del vestido en el Quijote
Authors: Díez Fernández J. Ignacio
Published: February 2019

No disponible.
Ramiro de Maeztu, Carlos Fuentes: Dos momentos de la cultura hispánica ante el Quijote
Authors: Guiñas Gómez Macarena
Published: February 2019

No disponible.
Fermín Herrán y el Ateneo Literario. La Casa de Cervantes en Valladolid (1872)
Authors: Menéndez Onrubia Carmen
Published: February 2019

No disponible.
"Entre alegre esperanza y triste olvido" (versos inéditos de Juan Bautista de Vivar en la biblioteca Riccardiana de Florencia)
Authors: Madroñal Abraham
Published: February 2019

No disponible.
Pláticas y coloquios en el Quijote
Authors: Gómez Jesús
Published: February 2019

No disponible.
Leandra, Marcela y Maritornes. Apuntes sobre la evolución de la materia pastoril en el proceso creativo del Quijote
Authors: Ansó Carlos
Published: February 2019

No disponible.
"Mar sesgo, viento largo, estrella clara" o la metáfora de la nave de amor en el Persiles
Authors: Lozano-Renieblas Isabel
Published: February 2019

No disponible.
«Mezclar verdades con fabulosos intentos»: metateatro y aporía en El gallardo español de Cervantes
Authors: Albuisech Lourdes
Published: February 2019

No disponible.
Cervantes, el Quijote y Barcelona. (Hipótesis de una estancia barcelonesa de Cervantes en 1571)
Authors: Riera Carme
Published: February 2019

El artículo "Cervantes, el Quijote y Barcelona (Hipótesis de una estancia barcelonesa de Cervantes en 1571)" trata de establecer la posibilidad del paso de Cervantes por Barcelona en 1571 con las tropas de Miguel de Monteada rumbo a Lepanto. Serían esos recuerdos barceloneses (fiestas de San Juan, entrada de don Juan de Austria en la ciudad) los que en el verano de 1614, le servirían para enderezar el rumbo del Quijote trayendo a su héroe a tierras catalanas después de leer la continuación de Avellaneda.
La "derrota compuesta" del cautivo. (Quijote, I, XLI)
Authors: Montaner Frutos Alberto
Published: February 2019

Se estudia aquí la travesía desde las costas argelinas a las españolas realizada por Ruy Pérez de Viedma, su prometida Zoraida y otros cristianos huidos de Argel, según se narra en el Quijote, I, XLI. El análisis permite apreciar la extremada exactitud de los detalles contenidos en la narración de capitán cautivo, en términos tanto geográficos como náuticos. Ello permite, además de corregir varias notas de los editores del Quijote, plantearse la cuestión de la verosimilitud en la poética cervantina, así como su relación con la admiración y la ejemplaridad. Se concluye que la historia del cautivo no es un mero paréntesis en la novela, sino un deliberado contrapunto moral y literario de los libros de caballerías y, por ello, el cautivo resulta un contraejemplo del propio don Quijote.
Un nuevo descubrimiento quijotesco: los dibujos anónimos para la edición ilustrada del 'Quijote ' impresa en Amberes, 1672-1673 (BNMadrid: Dib/16/51/1-34)
Authors: Lucía Megías José Manuel
Published: February 2019

No disponible.
Ilustraciones del 'Quijote ' utilizadas en muebles a finales del siglo XIX
Authors: Aguiló Alonso María Paz
Published: February 2019

El mostrar en el frente de un mueble escenas pertenecientes a una obra famosa constituye una costumbre ya utilizada en el siglo XVII. De los pocos ejemplares conocidos con temas quijotescos -solo cuatro- destaca el que aquí se muestra, producción flamenca posiblemente coincidente con el tercer centenario de la aparición de la obra. Se analizan los temas que aparecen, sus fuentes tomadas de las ilustraciones de diversas ediciones decimonónicas, así como el gusto por la elección de escenas amables, desarrolladas casi exclusivamente en exteriores, que evidencia el afán erudito propio de la época junto al interés por revalorizar un tipo de mueble genuinamente hispánico como es el escritorio.
Los nombres de Don Quijote
Authors: Fernández Rodríguez-Escalona Guillermo
Published: February 2019

El protagonista del Quijote recibe varios nombres en etapas bien diferenciadas. La incertidumbre sobre el nombre del hidalgo del primer capítulo, la fijeza de don Quijote de la Mancha (en contraste con la inestabilidad de los apelativos Caballero de la Triste figura y Caballero de los Leones) y la autenticidad de Alonso Quijano en el capítulo final constituyen sucesivas maneras de nombrar al personaje. Esos nombres están relacionados con la conciencia que tiene de sí mismo y reflejan una sola identidad, mudable en el desarrollo de su hacerse a sí mismo. El sentido de cada uno de esos nombres está determinado por el hecho de oponerse a los otros nombres y por reflejar distintos matices de la identidad del protagonista del Quijote, lo cual le sirve a Cervantes para criticar las formas y el fondo de la novela caballeresca.
Una lectura del Quijote. Avellaneda y el Conde Peranzules
Authors: Mariscal Hay Beatriz
Published: February 2019

Este trabajo está dedicado a un aspecto de la desatinada lectura de Avelladena que dio lugar a la pretendida continuación de la “genial invectiva contra los libros de caballería” de Miguel de Cervantes. Se centra en la utilización que hace Avellaneda de romances relacionados con el cerco de Zamora para componer su espuria continuación de El Ingenioso Hidalgo don Quijote de la Mancha y su posible influencia en la segunda parte del Quijote cervantino.
Algunas calas en el uso de los nombres de color en El Quijote
Authors: Fernández San Emeterio Gerardo
Published: February 2019

Los nombres de color tuvieron un significado simbólico entre los siglos XIV y XVII que restringía en cierto modo su uso. En este artículo, el autor ejemplifica este uso en varios episodios de Don Quijote y las Novelas ejemplares.
“De la dulce mi enemiga” Ecos y contextos de una referencia musical en la obra cervantina
Authors: Pastor Comín Juan José
Published: February 2019

No hay duda de que las obras cervantinas reflejan con fidelidad el mundo musical de finales del XVI y principios del XVII: instrumentos musicales, danzas, bailes, romances y canciones son con frecuencia citados y representados en sus páginas con el fin no ya sólo de describir el entorno pintoresco en el cual cobran vida sus personajes –tal y como sucede en el mundo gitano de Preciosa o, por ejemplo, en las tradiciones musicales musulmanas representadas en La gran sultana o Los baños de Argel– sino con la voluntad de añadir un valor semántico especial que tal vez fuera comprendido por los lectores-oyentes de principios del XVII. Este artículo trata pues de analizar el tópico musical “De la dulce mi enemiga”, una canción bien conocida que contó con múltiples realizaciones musicales y que sin duda opera en distintos niveles sobre los textos cervantinos como una referencia musical implícita portadora de un sentido único y revelador.
Guillermo y Rafael Fernández-Shaw: La burlesca Altisidora Septimino en cuatro estampas, con una pantomimacomo prólogo, inspirado en varios personajes de Don Quijote de la Mancha. Música de Narcís Bonet
Authors: Peral Vega Emilio
Published: February 2019

No disponible
De venta en venta hasta El Quijote. Un viaje europeo por la literatura de Mesón
Authors: Oleza Joan
Published: February 2019

En estas páginas se recorre un itinerario que, a través de ventas y mesones, conduce desde los Canterbury Tales hasta el Quijote, en una geografía literaria europea. Se hace parada en las colecciones italianas de novelle (Sachetti, Bandello), en los poemas caballerescos del Renacimiento (Pulci, Ariosto), en el teatro del Quinientos (de Gil Vicente a Lope de Rueda, pasando por los Intronati de Siena), en la Comedia Nueva y en las comedias de mesón de Lope de Vega, en el teatro isabelino (Shakespeare sobre todo), en el Guzmán de Alfarache, en La ilustre fregona (novela y comedia), y así hasta el Quijote, en cuya multiplicada experiencia de ventas y caminos demoramos el paso. Nos acompaña siempre la interrrogación sobre el cambiante sentido de la venta como escenario donde se plasma todo un discurso sobre la vida y la literatura. En el caso del Quijote, verdadera culminación de todo este itinerario europeo, la venta adquiere una pluralidad de significaciones que la equiparan, de forma diversificada, a otros grandes instrumentos culturales: la calle, el libro, el foro, el teatro.
Personajes históricos griegos o romanos en el Quijote
Authors: López Férez Juan Antonio
Published: February 2019

El trabajo se concentra en la presencia de personajes históricos griegos o romanos en el Quijote, presentando los pasajes acompañados del comentario y notas pertinentes. Siguiendo un orden cronológico, y poniendo entre paréntesis el número de menciones tenemos: Licurgo (2); Tulia, hija de Servio Tulio (1); Lucrecia (2); Horacio Cocles (1); Cayo Mucio Escévola (1); Artemisia-Mausolo (1); Alejandro Magno (13); Aníbal (2); Publio Cornelio Escipión, el Africano (1); Viriato (1); Sila-Mario-Catilina (1); Julio César (6); Porcia (1); Augusto (2); Nerón (2); Trajano-Adriano (1).
Santayana, Cervantes y El último puritano
Authors: Sánchez M. de Pinillos Hernán
Published: February 2019

Estudio de la presencia del Quijote en la obra de Jorge Santayana, en especial en su novela El último puritano. Se exploran asimismo las coincidencias estéticas y filosóficas de ambos autores.
Las piedras y la construcción psicológica de don Quijote
Authors: Karl Ulrich David
Published: February 2019

Elemento tanto de creación como de destrucción, no es extraño que surja la piedra como uno de los símbolos más potentes en El ingenioso hidalgo don Quijote de la Mancha. Las interpretaciones más comunes de la piedra proceden de la tradición judeocristiana, es decir, la dureza y la resistencia asociadas con la fe. Este artículo, sin embargo, se propone ampliar el tema y cubrir la relación de la piedra con el castigo, la muerte, el martirio, incluso su relación con la resurrección. A través del análisis de cinco episodios se intentará ver cómo la naturaleza polivalente de las piedras refleja la polivalencia de la psicología de don Quijote y su transición de colérico a melancólico. Se investigará igualmente el papel arquitectónico de la piedra tanto en la construcción como en la destrucción de los ideales, y, por extensión, en la misma identidad del personaje central de la obra cervantina.
Don Quijote y el Oidor de México: desencuentro de caballeros
Authors: Mayer María Eugenia
Published: February 2019

La primera aventura de don Quijote, el combate con el vizcaíno, y la última, en que conoce al Oidor, versan sobre «caballeros» que parten a Indias. La antítesis de don Quijote es el leguleyo que zarpa a la audiencia de Nueva España, tipo del caballero que medra durante la privacía de Lerma, a vuelta del XVI. Escucha «casos» y hace «negocios». Con él pasan a América el inesperado novio de su hija, heredero de un título, y la «historia» del «humor extraño» del manchego, transmitida por el cura que halla manuscritos anónimos. El cauto proceder del Oidor contrasta con las abiertas proclamas de don Quijote: una clave para que los habitantes del imperio leyeran el Quijote en el contexto bicostero España/Indias.
Las adaptaciones teatrales del Quijote en Inglaterra (del siglo XVII al XIX)
Authors: G. Ardila J. A.
Published: February 2019

La extraordinaria fama del Quijote propició que los autores teatrales lo adaptaran a la escena. Estas adaptaciones se han prodigado en varios países y a lo largo de los siglos. Hasta la fecha se conocían siete adaptaciones inglesas, además de la de Harriet Stewart (1834) sacada a la luz este mismo año en otro lugar. Se presentan aquí las adaptaciones de Fitzball (1834), Wills (1895) y Tenniel (1895?), se esclarece la identidad del autor de Alonzo Quijano (1895) y se contextualiza a Harriet Stewart. De esta suerte se muestra una panorámica más completa de la historia de la recepción del Quijote en Inglaterra y se pone más de manifiesto la extraordinaria querencia que en Inglaterra suscitó el Quijote.
La puntuación en los textos del Siglo de Oro y en el Quijote
Authors: Arellano Ignacio
Published: February 2019

El artículo trata de las prácticas de puntuación en los textos del Siglo de Oro, y en particular en el Quijote. Examina la discrepancia entre las teorías y la práctica de los impresores, las características de la puntuación en manuscritos, y la falta de sistema general que se debe en parte a la inexistencia de un sistema único en español. Se integran en el comentario numerosos ejemplos de textos auriseculares y del Quijote.
Para la historia textual de La Galatea
Authors: Montero Juan
Published: February 2019

El estudio de las diferentes impresiones y ediciones de La Galatea permite establecer la historia textual de la obra. Ese es el intento del presente trabajo, según el siguiente esquema: a) la editio princeps de 1585; b) las impresiones tempranas (1590-1618) y el resurgimiento editorial (1736-1846); c) las ediciones desde 1863 hasta hoy y las bases para el establecimiento de un texto crítico. La conclusiones obtenidas se resumen así: a) la princeps es el testimonio más cercano a la voluntad del autor, pero no carece de errores que el editor debe identificar y, si es posible, subsanar; b) las ediciones que van de 1590 a 1846 aportan en ocasiones lecturas útiles para lograr ese objetivo; c) las ediciones modernas de La Galatea han pecado en general de una fidelidad excesiva a la letra de la princeps, con la excepción de la que hizo C. Rosell en 1863, que tuvo en cuenta otras impresiones y practicó generosamente (aunque no siempre con acierto) la enmienda.
Hidalgos contra oficiales. Trasfondo ideológico y social de la polémica entre Cervantes y Lope
Authors: Salazar Rincón Javier
Published: February 2019

La enemistad entre Lope de Vega y Cervantes, y las disputas que ambos mantuvieron durante los primeros años del siglo XVII, además de ser la expresión de una desavenencia literaria, tienen su origen en la distinta posición que cada uno de ellos ocupaba dentro de la sociedad española de 1600, en que los orígenes familiares y la inserción de un autor dentro del orden estamental eran hechos que influían de manera decisiva en su trayectoria profesional, y en la mayor o menor protección que recibían. Lope, hidalgo y cristiano viejo, vivió cómodamente instalado en aquella sociedad, y contó con numerosos amigos y mecenas poderosos; mientras que Cervantes, hombre de linaje oscuro, que tuvo que ejercer oficios considerados indignos, fue un personaje marginado, y nunca se le aceptó plenamente en los cenáculos literarios ni en las casas nobiliarias.
Correspondencia cervantina de D. Alberto Sánchez (I)
Authors: De Torres José Carlos
Published: February 2019

No disponible
Espejos de tinta. Nuevas aproximaciones a los usos del escrito en Cervantes
Authors: Castillo Gómez Antonio
Published: February 2019

En el presente ensayo se aborda una aproximación a los usos y funciones de la cultura escrita en la España del Siglo de Oro tomando como referencia central las representaciones que del escrito se hacen en la obra de Cervantes, singularmente en el Quijote. Con tal propósito se han revisado el peso de la palabra hablada y escrita en la sociedad de aquel tiempo, las prácticas cotidianas de la escritura, los modos de difusión y recepción de los textos, el valor de la memoria, los efectos de la tipografía y, naturalmente, el sentido dado a la lectura y a las diversas maneras de efectuarse. Al final se incluye también una nota bibliográfica que inserta el universo cervantino en las coordenadas de la cultura escrita en la temprana Edad Moderna hispana.
Augusto Fernández, ilustrador de Don Quijote en el exilio mexicano
Authors: Cabañas Bravo Miguel , De Haro García Noemi , Murga Castro Idoia
Published: February 2019

Las andanzas de don Quijote fueron un tema recurrente en la producción artística de los exiliados españoles a causa de la Guerra Civil. En este artículo se analiza con detalle el caso del pintor y dibujante Augusto Fernández Sastre (1887-1975). Para ello, se sitúa su producción en el contexto de la creación exiliada en torno a don Quijote y, seguidamente, se estudia pormenorizadamente su trabajo en el exilio. De esta manera, se recupera del olvido a Augusto Fernández, un artista paradigmático para entender el empleo de esta temática en las artes plásticas exiliadas.
Correspondencia cervantina de D. Alberto Sánchez (II)
Authors: De Torres José Carlos
Published: February 2019

No disponible.
A propósito de Doña Justina y Calahorra, un entremés atribuido a Cervantes
Authors: Muñoz Liliana
Published: February 2019

No disponible.
Effect of drying on the chemical composition of Çakıldak (cv) hazelnuts during storage
Authors: Turan A.
Published: January 2019

The hazelnut (Corylus avellana L.) is one of the most popular tree nuts in the world. The proper selection of drying methods is necessary to prevent oil oxidation which will influence the overall nut quality during storage. The aim of this study was to determine the effects of sun drying (SD) and artificial dryingied (AD) on the chemical traits of hazelnuts during long–term storage. Protein, lipid and moisture contents, water activity, fatty acid composition, sum of fatty acids, and oil oxidation properties were determined over 24 months’ storage (2015–2017) at 20–25 °C and 70–90% relative humidity. The results showed that monounsaturated fatty acids (MUFA) was the main fatty acid group (81.55–83.38%) followed by polyunsaturated (PUFA; 10.39–11.57%) and saturated fatty acids (SFA; 5.75–6.60%). The samples dried by AD had more SFA (5.86%) and MUFA (83.11%) than the SD samples. At the end of storage, the lowest free fatty acid, and peroxide value (0.52%–1.45 meqO2·kg-1, respectively), and the highest oleic/linoleic acidity ratio (7.76) were found from AD. Therefore, AD appears to be more promising for hazelnut drying.
The PI3K p110δ Isoform Inhibitor Idelalisib Preferentially Inhibits Human Regulatory T Cell Function
Authors: Chellappa Stalin , Kushekhar Kushi , Munthe Ludvig A. , Tjønnfjord Geir E. , Aandahl Einar M. , Okkenhaug Klaus , Taskén Kjetil
Published: January 2019

In chronic lymphocytic leukemia (CLL), signaling through several prosurvival B cell surface receptors activates the PI3K signaling pathway. Idelalisib is a highly selective PI3K (PI3Kδ) isoform-specific inhibitor effective in relapsed/refractory CLL and follicular lymphoma. However, severe autoimmune adverse effects in association with the use of idelalisib in the treatment of CLL, particularly as a first-line therapy, gave indications that idelalisib may preferentially target the suppressive function of regulatory T cells (Tregs). On this background, we examined the effect of idelalisib on the function of human Tregs ex vivo with respect to proliferation, TCR signaling, phenotype, and suppressive function. Our results show that human Tregs are highly susceptible to PI3Kδ inactivation using idelalisib compared with CD4+ and CD8+ effector T cells (Teffs) as evident from effects on anti-CD3/CD28/CD2–induced proliferation (order of susceptibility [IC50]: Treg [.5 μM] > CD4+ Teff [2.0 μM] > CD8+ Teff [6.5 μM]) and acting at the level of AKT and NF-κB phosphorylation. Moreover, idelalisib treatment of Tregs altered their phenotype and reduced their suppressive function against CD4+ and CD8+ Teffs. Phenotyping Tregs from CLL patients treated with idelalisib supported our in vitro findings. Collectively, our data show that human Tregs are more dependent on PI3Kδ-mediated signaling compared with CD4+ and CD8+ Teffs. This Treg-preferential effect could explain why idelalisib produces adverse autoimmune effects by breaking Treg-mediated tolerance. However, balancing effects on Treg sensitivity versus CD8+ Teff insensitivity to idelalisib could still potentially be exploited to enhance inherent antitumor immune responses in patients.
Involvement of Lamin B1 Reduction in Accelerated Cellular Senescence during Chronic Obstructive Pulmonary Disease Pathogenesis
Authors: Saito Nayuta , Araya Jun , Ito Saburo , Tsubouchi Kazuya , Minagawa Shunsuke , Hara Hiromichi , Ito Akihiko , Nakano Takayuki , Hosaka Yusuke , Ichikawa Akihiro , Kadota Tsukasa , Yoshida Masahiro , Fujita Yu , Utsumi Hirofumi , Kurita Yusuke , Kobayashi Kenji , Hashimoto Mitsuo , Wakui Hiroshi , Numata Takanori , Kaneko Yumi , Asano Hisatoshi , Odaka Makoto , Ohtsuka Takashi , Morikawa Toshiaki , Nakayama Katsutoshi , Kuwano Kazuyoshi
Published: January 2019

Downregulation of lamin B1 has been recognized as a crucial step for development of full senescence. Accelerated cellular senescence linked to mechanistic target of rapamycin kinase (MTOR) signaling and accumulation of mitochondrial damage has been implicated in chronic obstructive pulmonary disease (COPD) pathogenesis. We hypothesized that lamin B1 protein levels are reduced in COPD lungs, contributing to the process of cigarette smoke (CS)–induced cellular senescence via dysregulation of MTOR and mitochondrial integrity. To illuminate the role of lamin B1 in COPD pathogenesis, lamin B1 protein levels, MTOR activation, mitochondrial mass, and cellular senescence were evaluated in CS extract (CSE)–treated human bronchial epithelial cells (HBEC), CS-exposed mice, and COPD lungs. We showed that lamin B1 was reduced by exposure to CSE and that autophagy was responsible for lamin B1 degradation in HBEC. Lamin B1 reduction was linked to MTOR activation through DEP domain–containing MTOR-interacting protein (DEPTOR) downregulation, resulting in accelerated cellular senescence. Aberrant MTOR activation was associated with increased mitochondrial mass, which can be attributed to peroxisome proliferator-activated receptor γ coactivator-1β–mediated mitochondrial biogenesis. CS-exposed mouse lungs and COPD lungs also showed reduced lamin B1 and DEPTOR protein levels, along with MTOR activation accompanied by increased mitochondrial mass and cellular senescence. Antidiabetic metformin prevented CSE-induced HBEC senescence and mitochondrial accumulation via increased DEPTOR expression. These findings suggest that lamin B1 reduction is not only a hallmark of lung aging but is also involved in the progression of cellular senescence during COPD pathogenesis through aberrant MTOR signaling.
Synchronous renal cell carcinoma and pheochromocytoma presenting as acute decompensated heart failure
Authors: Chen HH , Wu ST , Lin YC , Lin CS
Published: January 2019

We report a 49-year-old woman who presented with a hypertensive crisis and acute heart failure and reduced left ventricular systolic function. An abdominal ultrasonography revealed a huge lobulated heterogeneous mass at the lower pole of the right kidney and a mass over the left suprarenal area, which were further delineated by magnetic resonance imaging. The patient underwent laparoscopic right radical nephrectomy and left adrenalectomy. Histopathological analysis confirmed the diagnoses of clear cell renal cell carcinoma of the right kidney with metastasis to the lung; and atypical pheochromocytoma of the left adrenal gland. Target therapy was initiated, which resulted in stabilization of the patient's tumors and the recovery of her heart function. To avoid a delayed diagnosis and catastrophic outcome, clinicians should consider such rare causes of acute decompensated heart failure.
Кластерные цепочки Тоды и функции Некрасова
Authors: Bershtein Mikhail Aleksandrovich , Gavrilenko Pavel Georgievich , Marshakov Andrei Vladimirovich
Published: January 2019

Взаимосвязь между кластерными интегрируемыми системами и $q$-разностными уравнениями выводится за рамки случая Пенлеве. Рассматривается класс гиперэллиптических кривых, для которых многоугольники Ньютона имеют четыре граничные точки. Представлены соответствующие им кластерные интегрируемые системы Тоды. Дискретные автоморфизмы этих систем отождествляются с некоторыми редукциями разностных уравнений Хироты. Построены неавтономные версии этих уравнений. Обнаружено, что их решения выражаются через пятимерные функции Некрасова, содержащие вклады членов Черна-Саймонса, в то время как в автономном случае эти уравнения решаются с помощью тета-функций Римана.
Value stream mapping as a lean manufacturing tool: A new account approach for cost saving in a textile company
Authors: Carvalho C.P. , Carvalho D.S. , Silva M.B.
Published: February 2019

Companies around the world are under pressure to reduce their prices to be competitive. In order to keep profitability, they are adopting lean manufacturing (LM) and its tools to reduce waste and, consequently, the costs. Value stream mapping (VSM) is an efficient LM tool, identifying production flow waste. When it is possible to combine VSM with other LM tool, such as Kanban, a substantial impact in inventory reduction is reached. Additionally, the conventional account system shows limitations in the costs reduction to keep up with LM. The purpose of this paper is to present the results obtained by the application of the VSM combined with Kanban and the new account approach to measure the effectiveness of the cost reduction in the finished goods inventory. Considering that LM tools application in the textile segment has not an expressive number of researches, four hypothesis are presented and validated. The findings are discussed and finally, the research limitations and the practical implications originated by this work are presented as well as topics for further researches are suggested.
Open fires in Greenland in summer 2017: transport, deposition and radiative effects of BC, OC and BrC emissions
Authors: Evangeliou Nikolaos , Kylling Arve , Eckhardt Sabine , Myroniuk Viktor , Stebel Kerstin , Paugam Ronan , Zibtsev Sergiy , Stohl Andreas
Published: February 2019

Abstract. Highly unusual open fires burned in western Greenland between 31 July and
21 August 2017, after a period of warm, dry and sunny weather. The fires
burned on peatlands that became vulnerable to fires by permafrost thawing.
We used several satellite data sets to estimate that the total area burned
was about 2345 ha. Based on assumptions of typical burn depths and
emission factors for peat fires, we estimate that the fires consumed a fuel
amount of about 117 kt C and emitted about 23.5 t of black carbon (BC) and
731 t of organic carbon (OC), including 141 t of brown carbon (BrC). We used
a Lagrangian particle dispersion model to simulate the atmospheric transport
and deposition of these species. We find that the smoke plumes were often
pushed towards the Greenland ice sheet by westerly winds, and thus a large
fraction of the emissions (30 %) was deposited on snow- or ice-covered
surfaces. The calculated deposition was small compared to the deposition from
global sources, but not entirely negligible. Analysis of aerosol optical
depth data from three sites in western Greenland in August 2017 showed strong
influence of forest fire plumes from Canada, but little impact of the
Greenland fires. Nevertheless, CALIOP (Cloud-Aerosol Lidar with Orthogonal Polarization) lidar data showed that our model
captured the presence and structure of the plume from the Greenland fires.
The albedo changes and instantaneous surface radiative forcing in Greenland
due to the fire emissions were estimated with the SNICAR model and the uvspec
model from the libRadtran radiative transfer software package. We estimate
that the maximum albedo change due to the BC and BrC deposition was about
0.007, too small to be measured. The average instantaneous surface radiative
forcing over Greenland at noon on 31 August was 0.03–0.04 W m−2, with
locally occurring maxima of 0.63–0.77 W m−2 (depending on the studied
scenario). The average value is up to an order of magnitude smaller than the
radiative forcing from other sources. Overall, the fires burning in Greenland
in the summer of 2017 had little impact on the Greenland ice sheet, causing a
small extra radiative forcing. This was due to the – in a global context –
still rather small size of the fires. However, the very large fraction of the
emissions deposited on the Greenland ice sheet from these fires could
contribute to accelerated melting of the Greenland ice sheet if these fires
become several orders of magnitude larger under future climate.
Aerosol indirect effects on the temperature-precipitation scaling
Authors: Da Silva Nicolas , Mailler Sylvain , Drobinski Philippe
Published: January 2019

Abstract. Indirect effects of aerosols were found to weaken convective precipitation through reduced precipitable water and convective instability. The present study aims at quantifying the relative importance of these two processes in the reduction of summer precipitation using the temperature-precipitation scaling. Based on a numerical sensitivity experiment conducted over central Europe aiming to isolate indirect effects, all others effects being equal, the results show that the scaling of hourly convective precipitation with temperature follows the Clausius-Clapeyron (CC) relationship whereas the decrease of convective precipitation does not scale with the CC law since it is mostly attributable to increased stability with increased aerosols concentrations rather than to decreased precipitable water content. This effect is larger at low temperatures for which clouds are statistically more frequent and optically thicker. At these temperatures, the increase of stability is mostly linked to the stronger reduction of temperature in the lower troposphere compared to the upper troposphere which results in lower lapse rates.
Photochemical impacts of haze pollution in an urban environment
Authors: Hollaway Michael , Wild Oliver , Yang Ting , Sun Yele , Xu Weiqi , Xie Conghui , Whalley Lisa , Slater Eloise , Heard Dwayne , Liu Dantong
Published: January 2019

Abstract. Rapid economic growth in China over the past 30 years has resulted in significant increases in the concentrations of small particulates (PM2.5) over the city of Beijing. In addition to health problems, high aerosol loading can impact visibility and thus reduce photolysis rates over the city leading to potential implications for photochemistry. Photolysis rates are highly sensitive not only to the vertical distribution of aerosols but also to their composition as this can impact how the incoming solar radiation is scattered or absorbed. This study, for the first time, uses aerosol composition measurements and lidar optical depth to drive the Fast-JX photolysis scheme and quantify the photochemical impacts of different aerosol species during the Air Pollution and Human Health (APHH) measurement campaigns in Beijing in November–December 2016 and May–June 2017. This work demonstrates that severe haze pollution events (PM2.5 > 75 μg m−3) occur during both winter and summer leading to reductions in O3 photolysis rates of 27.4–34.0 % (greatest in winter) and reductions in NO2 photolysis of 40.4–66.2 % (greatest in summer) at the surface. It also shows that in spite of much lower PM2.5 concentrations in the summer months, the absolute changes in photolysis rates are larger for both O3 and NO2. In the winter, absorbing species such as black carbon dominate the photolysis response to aerosols leading to mean reductions in J[O1D] and J[NO2] in the lowest 1 km of 23.8 % and 23.1 % respectively. In contrast in the summer, scattering aerosol such as organic matter dominate the response leading to mean decreases of 2.0–3.0 % at the surface and increases of 8.4–10.1 % at higher altitudes (3–4 km). During these haze events in both campaigns, the influence of aerosol on photolysis rates dominates over that from clouds. These large impacts on photochemistry can have important implications for concentrations of important atmospheric oxidants such as the hydroxyl radical.
On the distinctiveness of oceanic raindrop regimes
Authors: Duncan David Ian , Eriksson Patrick , Pfreundschuh Simon , Klepp Christian , Jones Daniel C.
Published: February 2019

Abstract. Representation of the drop size distribution (DSD) of rainfall is a key element of characterizing precipitation in models and retrievals, with a functional form necessary to calculate the precipitation flux and the drops' interaction with radiation. With newly available oceanic disdrometer measurements, this study investigates the validity of commonly used DSDs, potentially useful a priori constraints for retrievals, and the forward model errors caused by DSD variability. These data are also compared to leading satellite-based estimates of oceanic DSDs. Forward model errors due to DSD variability are shown to be significant for both active and passive sensors. The modified gamma distribution is found to be generally adequate to describe rain DSDs, but may cause systematic errors for high latitude or stratocumulus rain retrievals; depending on the application, an exponential or generalized gamma function may be preferable for representing oceanic DSDs. An unsupervised classification algorithm finds a variety of DSD shapes that differ from commonly used DSDs, but does not find a singular set that best describes the global variability. Finally, DSD shapes are found to be not particularly distinctive of regional or large-scale environments, but rather occur at varying frequencies over the global oceans.
High-resolution temperature profiles retrieved from bichromatic stellar scintillation measurements by GOMOS/Envisat
Authors: Sofieva Viktoria F. , Dalaudier Francis , Hauchecorne Alain , Kan Valery
Published: January 2019

Abstract. In this paper, we describe the inversion algorithm for retrievals of high
vertical resolution temperature profiles (HRTPs) using bichromatic stellar
scintillation measurements in the occultation geometry. This retrieval
algorithm has been improved with respect to nominal ESA processing and
applied to the measurements by Global Ozone Monitoring by Occultation of
Stars (GOMOS) operated on board Envisat in 2002–2012. The retrieval method
exploits the chromatic refraction in the Earth's atmosphere. The
bichromatic scintillations allow the determination of the refractive angle,
which is proportional to the time delay between the photometer signals. The
paper discusses the basic principle and detailed inversion algorithm for
reconstruction of high-resolution density, pressure and temperature profiles
in the stratosphere from scintillation measurements. The HRTPs are
retrieved with a very good vertical resolution of ∼200 m and
high precision (random uncertainty) of ∼1–3 K for altitudes
of 15–32 km and with a global coverage. The best accuracy is achieved for
in-orbital-plane occultations, and the precision weakly depends on star
brightness. The whole GOMOS dataset has been processed with the improved
HRTP inversion algorithm using the FMI's scientific processor; and the
dataset (HRTP FSP v1) is in open access. The validation of small-scale fluctuations in the retrieved HRTPs is
performed via comparison of vertical wavenumber spectra of temperature
fluctuations in HRTPs and in collocated radiosonde data. We found that the
spectral features of temperature fluctuations are very similar in HRTPs and
collocated radiosonde temperature profiles. HRTPs can be assimilated into atmospheric models, used in studies of
stratospheric clouds and used for the analysis of internal gravity waves' activity. As an example of geophysical applications, gravity wave potential
energy has been estimated using the HRTP dataset. The obtained
spatiotemporal distributions of gravity wave energy are in good agreement
with the previous analyses using other measurements.
Towards imaging of atmospheric trace gases using Fabry–Pérot interferometer correlation spectroscopy in the UV and visible spectral range
Authors: Kuhn Jonas , Platt Ulrich , Bobrowski Nicole , Wagner Thomas
Published: February 2019

Abstract. Many processes in the lower atmosphere including transport,
turbulent mixing and chemical conversions happen on timescales of the order
of seconds (e.g. at point sources). Remote sensing of atmospheric trace gases
in the UV and visible spectral range (UV–Vis) commonly uses dispersive
spectroscopy (e.g. differential optical absorption spectroscopy, DOAS). The
recorded spectra allow for the direct identification, separation and
quantification of narrow-band absorption of trace gases. However, these
techniques are typically limited to a single viewing direction and limited by
the light throughput of the spectrometer set-up. While two-dimensional imaging
is possible by spatial scanning, the temporal resolution remains poor (often
several minutes per image). Therefore, processes on timescales of seconds
cannot be directly resolved by state-of-the-art dispersive methods. We investigate the application of Fabry–Pérot interferometers (FPIs) for
the optical remote sensing of atmospheric trace gases in the UV–Vis spectral range. By
choosing a FPI transmission spectrum, which is optimised to correlate with
narrow-band (ideally periodic) absorption structures of the target trace gas,
column densities of the trace gas can be determined with a sensitivity and
selectivity comparable to dispersive spectroscopy, using only a small number
of spectral channels (FPI tuning settings). Different from dispersive optical
elements, the FPI can be implemented in full-frame imaging set-ups (cameras),
which can reach high spatio-temporal resolution. In principle, FPI
correlation spectroscopy can be applied for any trace gas with distinct
absorption structures in the UV–Vis range. We present calculations for the application of FPI correlation spectroscopy
to SO2, BrO and NO2 for exemplary measurement
scenarios. In addition to high sensitivity and selectivity we find that the spatio
temporal resolution of FPI correlation spectroscopy can be more than 2
orders of magnitude higher than state-of-the-art DOAS measurements. As proof
of concept we built a 1-pixel prototype implementing the technique for
SO2 in the UV. Good agreement with our calculations and conventional
measurement techniques is demonstrated and no cross sensitivities to other
trace gases are observed.
Observation of nocturnal NO3 during vehicular activities in the medium sized
city of Calicut in coastal India
Authors: Suhail Kuttoth , Arun Ramachandran , Joshi Shreya , Shebin John , Aiswarya Saseendran , Anoop Pakkattil , Deepa Viswanath , Varma Ravi
Published: January 2019

Abstract. Nitrate radical (NO3) is the most important nocturnal oxidant in urban atmosphere. The city of Calicut (Kozhikode) is a medium sized urban location in India. One of the bus terminals at Palayam part of the city [11.2495° N, 75.7842° E] is adjacent to the vegetable sorting facilities cum market, both of which have intense activities by buses and trucks from about 3 AM till about 8 PM on all working days. We report preliminary measurements observing NO3 on five nights during a weeklong measurement campaign in the autumn of 2018. Measurements were made between 10 PM and 6 AM, and focus was when diesel vehicles were found idling along about half a km stretch during 3–6 AM while the loading/unloading of vegetables at sorting facility happens. Incoherent Broadband Cavity Enhanced Absorption Spectroscopic technique in open-path configuration (OP-IBBCEAS) was employed for measurements. The instrument was installed 8.5 m above the ground level over the east wing of Palayam bus terminal building adjacent to the vegetable market. The 285 cm long optical resonator was arranged on a custom-made aluminium profile platform 1 m high. The stability of the instrument for the entire period of measurement was excellent, and high NO3 mixing ratios with levels exceeding several hundred pptv were observed during early morning hours when heavy vehicles were idling. The highest NO3 mixing ratio observed was (497 ± 140) pptv during one of the nights. The fit uncertainty, which was considered as the uncertainty in retrieved concentration, was found to increase with increased aerosol loading. The uncertainty for a spectral averaging interval of 10 min was recorded as ~20 pptv and ~100 pptv during the lowest and the highest aerosol loading events respectively.
High-frequency variability of CO2 in Grand Passage, Bay of Fundy, Nova Scotia
Authors: Horwitz Rachel M. , Hay Alex E. , Burt William J. , Cheel Richard A. , Salisbury Joseph , Thomas Helmuth
Published: February 2019

Abstract. Assessing changes in the marine carbon cycle arising from anthropogenic
CO2 emissions requires a detailed understanding of the carbonate
system's natural variability. Coastal ecosystems vary over short spatial and
temporal scales, so their dynamics are not well described by long-term and
broad regional averages. A year-long time series of pCO2,
temperature, salinity, and currents is used to quantify the high-frequency
variability of the carbonate system at the mouth of the Bay of Fundy, Nova
Scotia. The seasonal cycle of pCO2 is modulated by a diel
cycle that is larger in summer than in winter and a tidal contribution that
is primarily M2, with amplitude roughly half that of the diel cycle
throughout the year. The interaction between tidal currents and carbonate
system variables leads to lateral transport by tidal pumping, which moves
alkalinity and dissolved inorganic carbon (DIC) out of the bay, opposite to the mean flow in the region,
and constitutes a new feature of how this strongly tidal region connects to
the larger Gulf of Maine and northwest Atlantic carbon system. These results
suggest that tidal pumping could substantially modulate the coastal ocean's
response to global ocean acidification in any region with large tides and
spatial variation in biological activity, requiring that high-frequency
variability be accounted for in assessments of carbon budgets of coastal
regions.
Climatological moisture sources for the Western North American Monsoon through a Lagrangian approach: their influence on precipitation intensity
Authors: Ordoñez Paulina , Nieto Raquel , Gimeno Luis , Ribera Pedro , Gallego David , Ochoa-Moya Carlos Abraham , Quintanar Arturo Ignacio
Published: February 2019

Abstract. This work examines the origin of atmospheric water
vapor arriving to the western North American monsoon (WNAM) region over a
34-year period (1981–2014) using a Lagrangian approach. This methodology
computes budgets of evaporation minus precipitation (E−P) by calculating changes in
the specific humidity of thousands of air particles advected into the study
area by the observed winds. The length of the period analyzed (34 years)
allows the method to identify oceanic and terrestrial sources of moisture to the
WNAM region from a climatological perspective. During the wet season, the WNAM region itself is on average the main
evaporative source, followed by the Gulf of California. However, water vapor
originating from the Caribbean Sea, the Gulf of Mexico, and terrestrial
eastern Mexico is found to influence regional-scale rainfall generation. Enhanced (reduced) moisture transport from the Caribbean Sea and the Gulf of
Mexico from 4 to 6 days before precipitation events seems to be responsible
for increased (decreased) rainfall intensity on regional scales during the
monsoon peak. Westward propagating mid- to upper-level inverted troughs (IVs)
seem to favor these water vapor fluxes from the east. In particular, a
200 % increase in the moisture flux from the Caribbean Sea to the WNAM
region is found to be followed by the occurrence of heavy
precipitation in the WNAM area a few days later. Low-level troughs off the coast of
northwestern Mexico and upper-level IVs over the Gulf of Mexico are also related
to these extreme rainfall events.
Glider data collected during the Algerian Basin Circulation Unmanned Survey
Authors: Cotroneo Yuri , Aulicino Giuseppe , Ruiz Simon , Sánchez Román Antonio , Torner Tomàs Marc , Pascual Ananda , Fusco Giannetta , Heslop Emma , Tintoré Joaquín , Budillon Giorgio
Published: January 2019

Abstract. We present data collected in the framework of the Algerian BAsin Circulation
Unmanned Survey (ABACUS) project. The main objective of ABACUS is the monitoring of
the basin circulation and of the surface and intermediate water masses'
physical and biological properties in a key region of the Mediterranean Sea
circulation. Data presented here have been collected through deep glider
cruises in the Western Mediterranean Sea during the autumns of 2014, 2015 and
2016; activities at sea are expected to be repeated during the coming years,
so that the dataset will be extended. Glider missions were conducted in the
Algerian Basin, between the island of Mallorca and the Algerian coast. Across
the three glider missions, eight repeated transects were completed which
enabled us to investigate the basin-scale circulation and the presence of
mesoscale structures, utilising both the adaptive sampling capabilities of the
gliders and the higher resolution of the data. After collection, all data passed a quality control procedure and were then
made available through an unrestricted repository host by the SOCIB Data
Centre at https://doi.org/10.25704/b200-3vf5. The actual dataset spans three autumn
seasons, providing an important contribution to the data collection in the
chronically undersampled Algerian Basin. Temperature and salinity data collected in the first 975 m of the water
column allowed us to identify the main water masses and describe their
characteristics, improving the understanding of the dynamics of the region. On
the timescale of the project, data show a large variability in the surface
layer and reduced variability in the intermediate and deep layers. Our measurements have been successfully compared to data previously
collected in the area from 1909 to 2011. Results showed similar overall
distribution, ranges and variability to the historical data, with no
outliers in the surface or deep layers.