bluuebunny/crossref_metadata_2025_split huggingface dataset:
Coexistence of Martian Proton Aurorae and Proton Cyclotron Waves during the Enhancement of Solar Wind Activity
Authors: Yun Xiaotong , Fu Song , Ni Binbin , Xu Wei , Gu Xudong , Cao Xing , Ma Xin , Luo Qiong , Hua Man , Xiang Zheng , Du Hengle 
Published: April 2022

Abstract
Due to the lack of a global magnetic field, the charge exchange process between the solar wind protons and Martian hydrogen corona is of critical importance to Mars’ atmosphere. The energetic neutral atoms and pickup H+ produced during this process can further excite proton aurorae and proton cyclotron waves (PCWs) in the near-Mars space, for which the observational evidence however remains very limited. Here we report a particular event to show that the PCWs and proton aurorae were simultaneously recorded by the Mars Atmosphere and Volatile EvolutioN spacecraft during 10 consecutive orbits. As the byproducts of the charge exchange process, these two phenomena are found to be highly correlated in both space and time, with the correlation coefficient >0.7 between the auroral emissions and PCW amplitudes. Moreover, the wave and ultraviolet measurements show clearly that both the PCWs and proton aurora events tend to occur more frequently and intensively within the stream interaction region, as being strongly modulated by the solar wind activity. Our results indicate that the solar wind can directly transport energy and particles into the near-Mars environment, leading to the simultaneous enhancements of plasma wave activity and proton precipitation, which therefore helps comprehend the significant role of the solar wind activity and charge exchange process in driving the energy budget to the Martian upper atmosphere.
A Comparative Analysis to Deal with Missing Spectral Information Caused by RFI in Cosmological H i 21 cm Observations
Authors: Chakraborty Arnab , Datta Abhirup , Mazumder Aishrila 
Published: April 2022

Abstract
We investigate the effect of radio-frequency interference (RFI) excision in estimating the cosmological H i 21 cm power spectrum. Flagging of RFI-contaminated channels results in a nonuniform sampling of the instrumental bandpass response. Hence, the Fourier transformation of visibilities from frequency to delay domain contaminates the higher foreground-free delay modes, and separating the spectrally fluctuating H i signal from spectrally smooth foregrounds becomes challenging. We have done a comparative analysis between two algorithms, one-dimensional CLEAN and least-squares spectral analysis (LSSA), which have been used widely to solve this issue in the literature. We test these algorithms using the simulated SKA-1 Low observations in the presence of different RFI flagging scenarios. We find that, in the presence of random flagging of data, both algorithms perform well and can mitigate the foreground leakage issue. But CLEAN fails to restrict the foreground leakage in the presence of periodic and periodic plus broadband RFI flagging and gives an extra bias to the estimated power spectrum. However, LSSA can restrict the foreground leakage for these RFI flagging scenarios and gives an unbiased estimate of the H i 21 cm power spectrum. We have also applied these algorithms to observations with the upgraded GMRT and found that both CLEAN and LSSA give consistent results in the presence of realistic random flagging scenarios for this observed data set. This comparative analysis demonstrates the effectiveness and robustness of these two algorithms in estimating the H i 21 cm power spectrum from data sets affected by different RFI scenarios.
SolO/EUI Observations of Ubiquitous Fine-scale Bright Dots in an Emerging Flux Region: Comparison with a Bifrost MHD Simulation
Authors: Tiwari Sanjiv K. , Hansteen Viggo H. , De Pontieu Bart , Panesar Navdeep K. , Berghmans David 
Published: April 2022

Abstract
We report on the presence of numerous tiny bright dots in and around an emerging flux region (an X-ray/coronal bright point) observed with SolO’s EUI/HRIEUV in 174 Å. These dots are roundish and have a diameter of 675 ± 300 km, a lifetime of 50 ± 35 s, and an intensity enhancement of 30% ± 10% above their immediate surroundings. About half of the dots remain isolated during their evolution and move randomly and slowly (<10 km s−1). The other half show extensions, appearing as a small loop or surge/jet, with intensity propagations below 30 km s−1. Many of the bigger and brighter HRIEUV dots are discernible in the SDO/AIA 171 Å channel, have significant emissivity in the temperature range of 1–2 MK, and are often located at polarity inversion lines observed in SDO/HMI LOS magnetograms. Although not as pervasive as in observations, a Bifrost MHD simulation of an emerging flux region does show dots in synthetic Fe ix/x images. These dots in the simulation show distinct Doppler signatures—blueshifts and redshifts coexist, or a redshift of the order of 10 km s−1 is followed by a blueshift of similar or higher magnitude. The synthetic images of O v/vi and Si iv lines, which represent transition region radiation, also show the dots that are observed in Fe ix/x images, often expanded in size, or extended as a loop, and always with stronger Doppler velocities (up to 100 km s−1) than that in Fe ix/x lines. Our observation and simulation results, together with the field geometry of dots in the simulation, suggest that most dots in emerging flux regions form in the lower solar atmosphere (at ≈ 1 Mm) by magnetic reconnection between emerging and preexisting/emerged magnetic field. Some dots might be manifestations of magnetoacoustic shocks through the line formation region of Fe ix/x emission.
Multiwavelength and Multi-CO View of the Minor Merger Driven Star Formation in the Nearby LIRG NGC 3110
Authors: Kawana Yuka , Saito Toshiki , Okumura Sachiko K. , Kawabe Ryohei , Espada Daniel , Iono Daisuke , Kaneko Hiroyuki , Lee Minju M. , Michiyama Tomonari , Motohara Kentaro , Nakanishi Kouichiro , Pettitt Alex R. , Randriamanakoto Zara , Ueda Junko , Yamashita Takuji 
Published: April 2022

Abstract
We present Atacama Large Millimeter/submillimeter Array observations of multiple 12CO, 13CO, and C18O lines and 2.9 mm and 1.3 mm continuum emission toward the nearby interacting luminous infrared galaxy NGC 3110, supplemented with similar spatial resolution Hα, 1.4 GHz continuum, and K-band data. We estimate the typical CO-to-H2 conversion factor of 1.7 M
⊙ (K km s−1 pc2)−1 within the disk using local thermal equilibrium-based and dust-based H2 column densities, and measure the 1 kpc scale surface densities of the star formation rate (ΣSFR), super star clusters (ΣSSC), molecular gas mass, and star formation efficiency (SFE) toward the entire gas disk. These parameters show a peak in the southern part of the southern spiral arm (SFE ∼ 10−8.2 yr−1, ΣSFR ∼ 10−0.6
M
⊙ kpc−2 yr−1, ΣSSC ∼ 6.0 kpc−2), which is likely attributable to the ongoing tidal interaction with the companion galaxy MCG-01-26-013, as well as toward the circumnuclear region. We also find that thermal free–free emission contributes to a significant fraction of the millimeter continuum emission at the position of the southern peak. These measurements imply that the peak of the southern arm is an active and young star-forming region, whereas the central part of NGC 3110 is a site of long-continued star formation. We suggest that during the early stage of the galaxy–galaxy interaction in which the mass ratio was high in NGC 3110, fragmentation along the main galaxy arms is an important driver of merger-induced star formation, and that massive gas inflow results in dusty nuclear starbursts.
Neptune’s Moon Triton: Continuing Surface Seasonal Volatile Transport
Authors: Hicks Michael D. , Buratti Bonnie J. , Dombroski David 
Published: April 2022

Abstract
Observations of Triton’s rotational light curve from Table Mountain Observatory in 2017 show that volatile transport is continuing on its surface. Changes in the light curve are consistent with sustained increases in albedo in two patches near the equator at longitudes of ∼120° and ∼280°, as first reported by Bauer et al. based on observations obtained with the Hubble Space Telescope. An early observation of Triton’s visual albedo shows a substantially lower albedo in the past, when the northern polar region was visible. This result confirms the hypothesis of Moore & Spencer and Spencer & Moore of a net flux of volatile material into the southern hemisphere of Triton over much of the satellite’s history and up to the present. The averaged V-band geometric albedo of Triton has been stable over the past three decades. The color of Triton has also been stable during the past decade.
A new species of Validifemur Ma, Song &amp; Zhu, 2007 (Lithobiomorpha, Lithobiidae) from northwest China
Authors: Han Yuhang , Pei Sujian , Ma Huiqin , Li Yaojun , Liu Yinfeng 
Published: April 2022

The myriapod fauna of China is still poorly known and very little attention has been paid to the study of Lithobiomorpha, with only more 100 species/subspecies hitherto known from the country, amongst which are only three species of Validifemur. Here we are describing a new species from northwest China.
A new lithobiid species, Validifemur radispinipes sp. n., is described and illustrated from Wolong Mountain Park, Jingyuan County, Guyuan City, Ningxia Hui Autonomous Region, northwest China. The new species is compared with V. pedodontus Ma, Song &amp; Zhu, 2007 from Shaanxi Province, China. Type specimens are deposited in the Institute of Myriapodology, School of Life Sciences, Hengshui University, Hengshui, China.
An idea on Smart Farming: IoT monitoring of water production from dihydrogen combustion
Authors: Belkeziz Radia 
Published: April 2022

Smart Farming is a concept developing rapidly and gaining momentum. The management of livestock and farm products is done in an automated way thanks to IoT technology. The large field of data at hand offers the possibility of analysis for a better understanding of issues and more efficient decision-making. The management of water consumption is one of the most relevent Smart Farming use cases. In the event of drought, the pressure on water resources becomes increasingly strong. What if we produced water then? The idea of not worrying about the consequence of drought on agricultural production would be interesting.
One of the first experiences you learn in a chemistry class is that the combustion of dihydrogen produces water. However, it is necessary to follow this experience closely because of the risk of explosion. Dihydrogen can be produced by the gasification of (agricultural) biomass. Here, the technology takes over, by the means of a supervising IoT system. This system will manage the overall process from biomass production, then dihydrogen production (biomass-to-hydrogen), to water production (dihydrogen-to-water).
If the idea proves to be viable on a large scale, the result would be valuable in reducing the issue of water scarcity, in times of drought, in agricultural areas, and even in allowing energy autonomy on farms.
Aplicación de cadenas de Markov al análisis dinámico de la centralidad en un sistema de transporte.
Authors: Córdoba y Ordóñez Juan , Antón Burgos Javier 
Published: April 2022

Se expone en este artículo la utilidad que ofrecen las cadenas de Markov para el análisis de ciertos aspectos dinámicos del sistema de transporte, como la jerarquía de centros, la centralidad y la cohesión de la red. El trabajo se realiza a partir de un supuesto teórico sobre la red de transporte aéreo española y en él se presta especial atención al proceso metodológico.

[fr] Cet article verse sur les chaines de Markov comme outil méthodologique pour l'analyse de certains aspects dynamiques des systèmes de transport, tels que la hiérarchie des centres, la centralité et la cohésion du réseau. L'expérience, qui fait surtout attention au processus méthodologique, porte sur un hypothétique réseau espagnol de transport aérien.
Gramática de comunicación con Sistemas de Información Geográfica.
Authors: Cebrián Juan A. 
Published: April 2022

En este artículo repasamos los aspectos fundamentales para el uso de Sistemas de Información Geográfica. Hemos estudiado los diferentes modelos de datos espaciales y las relaciones entre los SIGs y los sistemas generales de manipulación de información, subrayando los aspectos teóricos más importantes.

[fr] Dans cet article nous revisons les principaux aspects de l'usage des Systèmes d'Information Géographique. Nous étudions les différents modèles des données spatiales, les relations entre SIGs et les sistèmes generaux de manipulation de l'information, ansi que plusieurs procédures de SIGs. Les aspects théoriques sont particulièrment soulignés.
La influencia de la ciudad sobre las precipitaciones: El caso de Madrid.
Authors: Fernández García Felipe 
Published: April 2022

Se analiza la influencia de Madrid sobre las precipitaciones. Se observa que en la ciudad las precipitaciones aumentan entre un 11 % y un 20%. Las diferencias son máximas en invierno y se relacionan con un aumento de los días de precipitación débil, inferiores a 5 mm/día, y alta, superiores a 15 mm/día.

[fr] Nous étudions l'influence de l'urbanitation sur les precipitations. A Madrid la ville est plus arrosée que la périphérie avec différences oscillant entre un 11 % y 20% et le maximum de différence est en hiver. Les jours de précipitations sont, aussi, plus elevé en ville et l'intensité inférieure a 5 mm. et supérieures, a 15 mm. sont les plus fréquentes.
Método cuantitativo para el análisis y clasificación de una red fluvial. Aplicación de dos cuencas pirenaicas (N. Pallaresa y N. Ribagorzana).
Authors: Jardí Monserrat 
Published: April 2022

Aplicación en dos cuencas pirenaicas (N. Pallaresa y N. Ribagorzana). En e] presente artículo, mediante un método cuantitativo basado en la clasificación de Strahler, se halla un sistema para establecer unas categorías de importancia en los diferentes cursos y tramos de una determinada red de drenaje. Para ello, una vez establecidos los diversos órdenes, se individualizan todas las subcuencas cuyo curso principal alcance, como mínimo, e] orden 3 ,y a] contabilizar los límites que permitirán adjudicar cada tramo a una de las tres categorías establecidas previamente. Este análisis se ha realizado sobre las cuencas de los ríos Noguera Pallaresa y Noguera Ribagorzana a una escala 1/200.000, desarrollándose un método de identificación de ]as subcuencas que ]as sitúan de forma inequívoca en el conjunto de la red de drenaje. Finalmente, se efectúa un estudio más detallado de las disciplinas características de los tramos asignados a las dos primeras categorías con un análisis comparativo entre ambas cuencas pirenaicas.

[fr] Application a deux bassins pyrénéens (Noguera Pallaresa et Noguera Ribagorçana).Dans cet travail, parmis une méthode quantitative basée dans la classification d'Strahler, on trouve un système pour établir des catégories en importance dans les differents cours et tronçons d un réseau fluvial determiné. Après avoir établi les ordres correspondants on a individualisé tous ]es sub-bassins le cours principal desquels arrive, comme mínimum, a l'ordre 3 et ayant fait le comptage on a pû établir les limites qui nous permetront situer chaque tronçon dans une des trois catégories préalablement établies. Cet analyse a été realisé a 1/200.000 dans les bassins des rivières Noguera Pallaresa et Noguera Ribagorçana, et on a développée una méthode d'identification des subbassins laquelle pelit les situer indubitablement dans l'ensemble du réseau de drainage. Finalment, on a fait un étude plus detaillé des principals characteristiques des tronçons qu'on a assigné aux deux premières catégories avec una analyse comparative des deux bassins pyrénéens.
Consideraciones en torno al concepto de vaciado industrial.
Authors: Pardo Abad Carlos J. 
Published: April 2022

El vaciado industrial es un aspecto importante de las transformaciones urbanas recientes. El cierre o traslado de establecimientos crea vacíos en la ciudad. Si el fenómeno es extenso, la imagen de la ciudad se ve gravemente deteriorada, ofreciendo la fábrica abandonada y sin actividad un espectáculo desolador. Se define el término vacío industrial y se presentan las interpretaciones que dicho proceso ha recibido en la bibliografía extranjera,sobre todo en Francia y Alemania. Los vacíos se interpretan como componente de cambio industrial y como potencial de renovación urbana.

[fr] La friche industrielle est un aspect important des transformations urbaines récentes. La fermeture ou le déplacement des établissements crée «vacíos» dans la ville. Si le phénomene est étendu l'image de la ville on voit gravement déteriorée, en offrant l'usine abandonnée et sans activité un spectacle desolateur. On explique le terme «vacío» industrie] et sont présentées les interprétations que dit proces a reçu dans la bibliographie étrangere, surtout en France et en Allemagne. Les «vacíos» sont interpretés comme un composant de changement industriel et comme un potentiel de rénovation urbaine.
Pasado y presente de la minería mexicana: Estructura y origanización territorial a principios del decenio de los noventa.
Authors: Coll-Hurtado Atlántida , Sánchez-Salazar María Teresa 
Published: April 2022

El presente trabajo hace un análisis de las principales etapas en el desarrollo histórico de la minería mexicana, considerando su papel fundamenta como organizadora del territorio. Asimismo, se señalan las caractensticas más importantes de la minería actual: sus problemas, su estructura organizativa, los principales espacios mineros y los cambios más recientes en su geografía, como resultado de la situación económica interna y de su inserción en el mercado mundial de minerales.

[fr] Cette article analyse brievement l'évolution historique de l'activité miniere, considérant son role fundamental comme organisatrice du territoire. Ce sont examinés aussi les caractéristiques les plus importantes de l'industrie miniere: les problemes, la structure organisative, les principaux espaces et les changements géographiques les plus récents, comme résultat de la situation économique interne et du marché international des minerais.
Pediatric Participant Retention Rates in a Longitudinal Malaria Immunology Study
Authors: Mistry Anushay , Odwar Boaz , Olewe Fredrick , Kurtis Jonathan , Moormann Ann M. , Ong’echa John Michael 
Published: April 2022

ABSTRACT.
The resurgence of drug-resistant Plasmodium falciparum parasites continues to motivate the development of a safe and efficacious malaria vaccine. Immuno-epidemiologic studies of naturally acquired immunity (NAI) have been a useful strategy to identify new malaria vaccine targets. However, retention of pediatric participants throughout longitudinal studies is essential for gathering comprehensive exposure and outcome data. Within the context of a 3-year cohort (N = 400) study involving monthly finger prick and bi-annual venous blood sample collections, we conducted qualitative surveys to assess factors impacting participant retention. Phase 1 was conducted 3 months after enrollment in July 2018 and phase 2, 12 months later. In phase 1, 236 parents/guardians participated in focus groups and three withdrawn participants and 10 community health volunteers (CHVs) in key informant interviews. Qualitative analysis indicated overall satisfaction with the study, with 61.8% (136/220 respondents) reporting no concerns. Focus group discussants associated attendance with benefits such as improved access to comprehensive healthcare services. Community health volunteers reported concerns over village rumors of inappropriate use of blood samples and dangers associated with venous blood draws. Phase 2 involved 205 parents/guardians and revealed continued satisfaction, with 46.3% (95/205) identifying no concerns, but expressed increasing worries regarding the amount of venous blood sample. This concern was reflected in an uptick of missed visits when venous blood samples were scheduled. Future studies will address parental concerns to determine whether community engagement and education measures increase study retention until completion.
A General Survey of B.A.M.S. Students to Improve Overall Teaching
Authors: Parikh Mamta  , Chotai Tanvi  
Published: April 2022

For any professional course it is very important to identify students’ perceptions and suggestions to improve the system of education. To solve this purpose this study was planned by conducting a survey among the students of B.A.M.S. The current course of B.A.M.S. is the combination of ancient Ayurveda and modern medical science, where students find some difficulties to understand and co-relate it with real time patients. Google form was prepared to conduct this survey and it was filled up online by 352 students of seven different Ayurveda colleges of Saurashtra region, Gujarat. In this survey an effort has been made to know the background of students, their understanding about the course, certain generalized questions were also included in the questionnaire, i.e. professional goal after completion of B.A.M.S., what they think about the current teaching methodology and if they need any change in its different aspects or in syllabus. The result is found to be beyond our imagination, which is the best teaching pattern; chalk & board or digital platform. The impact of online education has become the new opportunity for students to indulge themselves in more usage of mobile or electronic gadgets in the name of educational purpose.