bluuebunny/crossref_metadata_2025 huggingface dataset:
Asociación del estado nutricional y funcional en ancianos con fractura de cadera
Authors: Caicedo-Correa Sandra Milena , Aruachan-Torres Samir Alejandro , Segura-Valencia Ana Isabel , Chavarro-Carvajal Diego Andrés
Published: August 2019

Introducción: las fracturas de cadera son una complicación frecuente y grave en las personas

ancianas. Existen múltiples factores que se asocian con las fracturas de caderas en los ancianos, entre

los que se destacan el estado nutricional y la funcionalidad de los afectados. El estado nutricional

está condicionado en parte por el proceso de envejecimiento y por los cambios físicos, mentales,

sociales y ambientales que se asocian a éste. La desnutrición es un problema de gran relevancia en

la población anciana y que puede influir en el pronóstico asociado a diversos procesos patológicos.

La presencia de alteraciones nutricionales se han relacionado directamente con el estado funcional.

Objetivo: determinar el estado funcional y nutricional previo, y su asociación en ancianos con

fractura de cadera.

Material y métodos: se estudiaron 177 ancianos con fractura de cadera del 1º enero de 2013

hasta el 31 de diciembre de 2016 que ingresaron al programa de ortogeriatría del Hospital Universitario San Ignacio en Bogotá, Colombia. A todos los pacientes se les analizó el estado funcional

y nutricional dos semanas previo al evento. Se utilizó estadística descriptiva y análisis inferencial

para pruebas de asociación con x2.

Resultados: el 45.76% eran independientes para sus actividades básicas de la vida diaria y

54.23% presentaban algún grado de deterioro funcional. El 26.55% presentaban malnutrición, el

45.76% riesgo de malnutrición y 27.68% un estado nutricional adecuado. De los pacientes con algún

grado de malnutrición (MNA
Hemorragia alveolar difusa secundaria a vasculitis asociada a ANCA
Authors: Contreras Villamizar Kateir Mariel , García-Padilla Paola Karina , González-González Camilo Alberto , Rodríguez-Sánchez Martha Patricia , Toro-Atara Jhonatan
Published: August 2019

La hemorragia alveolar difusa (HAD) masiva es una complicación inusual de los pacientes con vasculitis ANCA, frecuentemente amenaza la vida y está asociada con una mortalidad de hasta el 100%. La información en la literatura acerca del tratamiento en casos refractarios y cuando el paciente se encuentra en diálisis es escasa.

Se presenta el caso de un paciente con vasculitis p-ANCA con compromiso renal y pulmonar en el escenario de síndrome pulmón-riñón, con múltiples recaídas de hemorragia alveolar a pesar de tratamiento con corticoide, azatioprina, ciclofosfamida y terapia de recambio plasmático. Se instauró manejo con anticuerpo monoclonal anti CD20 e inmunoglobulina, logrando resolución del episodio de hemorragia alveolar y permaneciendo sin actividad. Se resalta la utilidad del rituximab como estrategia terapéutica en casos refractarios
Finite Element Analysis of Graphene Oxide Based Nanoelectromechanical Capacitive Switch
Authors: Chaudhary Rekha , Mudimela Prasantha Reddy
Published: August 2019

The present work deals with finite element analysis (FEA) of a novel configuration of double clamped nanoelectromechanical (NEM) capacitive switch. Graphene oxide (GO), a graphene derivative has been used as suspended beam material in NEM switch for the first time. In the proposed work, GO is used as dielectric material having negative Poisson’s ratio value. The variation in capacitance has observed as the beam is pulled down by the actuating electrode. Analysis of pull-in voltage and von Mises stress are done using COMSOL Multiphysics, for standard and perforated GO NEM switch structures. The actuation voltage of 5.4 V for standard beam structure and 3.35 V for perforated beam structure have been achieved for the beam length of 1µm and width of 0.3 µm. The actuation voltage and von Mises stress value have reduced by making perforations in the beam. The comparative analysis of graphene and GO NEM switches have also been done in terms of von Mises stress to ensure the mechanical reliability. The von Mises stress values for GO NEM switch and graphene NEM switch are 500 MPa and 4.8 GPa respectively. This lesser value of von Mises stress in GO NEM switch makes it a good choice as beam material. The capacitive switch is demonstrated for standard and perforated beam structures. The variation in capacitance has observed as the beam is pulled down by the actuating electrode and at actuation voltage, the maximum value of capacitance obtained is 0.9403 pF.
Revised Description of Dust Diffusion and a New Instability Creating Multiple Rings in Protoplanetary Disks
Authors: Tominaga Ryosuke T. , Takahashi Sanemichi Z. , Inutsuka Shu-ichiro
Published: August 2019

Various instabilities have been proposed as a promising mechanism for accumulating dust. Moreover, some of them are expected to lead to multiple-ring structure formation and planetesimal formation in protoplanetary disks. In a turbulent gaseous disk, the growth of the instabilities and the dust accumulation are quenched by the turbulent diffusion of dust grains. The diffusion process has often been modeled by a diffusion term in the continuity equation for the dust density. The dust diffusion model, however, does not guarantee conservation of angular momentum in a disk. In this study, we first formulate equations that describe dust diffusion and also conserve the total angular momentum of a disk. Second, we perform a linear perturbation analysis on the secular gravitational instability (GI) using the equations. The results show that the secular GI is a monotonically growing mode, contrary to the result of previous analyses that found it overstable. We find that the overstability is caused by the nonconservation of the angular momentum. Third, we find a new axisymmetric instability due to the combination of dust–gas friction and turbulent gas viscosity, which we refer to as two-component viscous gravitational instability (TVGI). The most unstable wavelength of TVGI is comparable to or smaller than the gas scale height. TVGI accumulates dust grains efficiently, which indicates that TVGI is a promising mechanism for the formation of multiple-ring-like structures and planetesimals. Finally, we examine the validity of the ring formation via the secular GI and TVGI in the HL Tau disk and find both instabilities can create multiple rings whose width is about 10 au at orbital radii larger than 50 au.
Dynamic Evolution of Current Sheets, Ideal Tearing, Plasmoid Formation and Generalized Fractal Reconnection Scaling Relations
Authors: Singh K. A. P. , Pucci Fulvia , Tenerani Anna , Shibata Kazunari , Hillier Andrew , Velli Marco
Published: August 2019

Magnetic reconnection may be the fundamental process allowing energy stored in magnetic fields to be released abruptly, with solar flares and coronal mass ejection being archetypal natural plasma examples. Magnetic reconnection is much too slow of a process to be efficient on the large scales, but accelerates once small enough scales are formed in the system. For this reason, the fractal reconnection scenario was introduced to explain explosive events in the solar atmosphere; it was based on the recursive triggering and collapse via tearing instability of a current sheet originally thinned during the rise of a filament in the solar corona. Here we compare the different fractal reconnection scenarios that have been proposed, and derive generalized scaling relations for the recursive triggering of fast, “ideal” —i.e., Lundquist number independent—tearing in collapsing current sheet configurations with arbitrary current profile shapes. An important result is that the Sweet–Parker scaling with Lundquist number, if interpreted as the aspect ratio of the singular layer in an ideally unstable sheet, is universal and does not depend on the details of the current profile in the sheet. Such a scaling, however, must not be interpreted in terms of stationary reconnection, rather it defines a step in the accelerating sequence of events of the ideal tearing mediated fractal cascade. We calculate scalings for the expected number of plasmoids for such generic profiles and realistic Lundquist numbers, showing that in ideal tearing scenarios a smaller number of plasmoids, by orders of magnitude, is generated compared to the original fractal model.
A NuSTAR and XMM-Newton Study of the Two Most Actively Star-forming Green Pea Galaxies (SDSS J0749+3337 and SDSS J0822+2241)
Authors: Kawamuro Taiki , Ueda Yoshihiro , Ichikawa Kohei , Imanishi Masatoshi , Izumi Takuma , Tanimoto Atsushi , Matsuoka Kenta
Published: August 2019

We explore X-ray evidence for the presence of active galactic nuclei (AGNs) in the two most actively star-forming Green Pea galaxies (GPs), SDSS J0749+3337 and SDSS J0822+2241, which have star formation rates (SFRs) of 123 M
⊙ yr−1 and 78 M
⊙ yr−1, respectively. The GPs have red mid-infrared (MIR) spectral energy distributions and higher 22 μm luminosities than expected from a proxy of the SFR (Hα luminosity), consistent with hosting AGNs with 2–10 keV luminosities of ∼1044 erg s−1. We thus obtain and analyze the first hard (>10 keV) X-ray data observed with NuSTAR and archival XMM-Newton data below 10 keV. From the NuSTAR ≈20 ks data, however, we find no significant hard X-ray emission. By contrast, soft X-ray emission with 0.5–8 keV luminosities of ≈1042 erg s−1 is significantly detected in both targets, which can be explained only by star formation (SF). A possible reason for the lack of clear evidence is that a putative AGN torus absorbs most of the X-ray emission. Applying a smooth-density AGN torus model, we determine minimum hydrogen column densities along the equatorial plane (

) consistent with the nondetection. The results indicate

cm−2 for SDSS J0749+3337 and

cm−2 for SDSS J0822+2241. Therefore, the GPs may host such heavily obscured AGNs. Otherwise, no AGN exists and the MIR emission is ascribed to SF. Active SF in low-mass galaxies is indeed suggested to reproduce red MIR colors. This would imply that diagnostics based on MIR photometry data alone may misidentify such galaxies as AGNs.
Onset of Giant Planet Migration before 4480 Million Years Ago
Authors: Mojzsis Stephen J. , Brasser Ramon , Kelly Nigel M. , Abramov Oleg , Werner Stephanie C.
Published: August 2019

Soon after their formation, the terrestrial planets experienced intense impact bombardment by comets, leftover planetesimals from primary accretion, and asteroids. This temporal interval in solar system evolution, termed late accretion, thermally and chemically modified solid planetary surfaces and may have impeded life's emergence on the Hadean (pre-3850 Ma) Earth. The sources and tempo of bombardment, however, remain obscure. Here we present a timeline that relates variably retentive radiometric ages documented from asteroidal meteorites to new dynamical models that invoke an early episode of planetesimal-driven giant planet migration after the dispersal of the protoplanetary disk. Reconciliation of geochronological data with dynamical models shows that such giant planet migration should lead to an intense ∼30 Myr influx of comets to the entire solar system manifested in radiometric age data. The absence of wholesale crustal reset ages after ∼4450 Ma for the most resilient chronometers from Earth, Moon, Mars, 4 Vesta, and various meteorite parent bodies confines the onset of giant planet migration to ca. 4480 Ma. Waning impacts continue to strike the inner planets through a protracted monotonic decline in impactor flux, in agreement with predictions from crater chronology. New global 3D thermal analytical bombardment models derived from our revised impact mass-production functions show also that persistent niches for prebiotic chemistry leading to the emergence of life on the early Hadean Earth could endure late accretion since at least about 4400 million years ago.
Phylogenetic Systematics of Pterostichites (Carabidae)
Authors: Will Kipling
Published: August 2019

As typically comprised, Pterostichitae includes about 10% of the species described in Carabidae. The phylogenetic study of the family Carabidae headed up by D. Maddison (OSU) that includes 550 carabid species covers all major clades of pterostichites and their putative relatives in Harpalinae. I will present results for the Pterostichitae from that analysis, focusing on relationships among major clades in the Northern Hemisphere (Pterostichina, Zabrina, Sphodrina) and the placement of more distantly related taxa (e.g., Abacetini, Drimostomatini). As analyses of the data have not yet been completed, there will be additional discoveries this summer, about which I will report in my talk.
Isotrema sanyaense, a new species of Aristolochiaceae from Hainan, China
Authors: Li Rongtao , Wang Zhiwei , Wang Jun , Zhu Xinxin , Xu Han
Published: August 2019

Isotrema sanyaense R.T.Li, X.X.Zhu & Z.W.Wang, sp. nov., a new species from Hainan island, China, is described and illustrated here. It is morphologically most similar to I. ledongense (Han Xu, Y.D.Li & H.J.Yang) X.X.Zhu, S.Liao & J.S.Ma and I. jianfenglingense (Han Xu, Y.D.Li & H.Q.Chen) X.X.Zhu, S.Liao & J.S.Ma in the shape of leaf, flower, and the yellow to brown villous indumentum of the pedicel, ovary and calyx. However, I. sanyaense can be easily distinguished from the latter two species by its 1–5-flowered cymes, in hanging clusters of 1 to numerous branches, upper calyx tube obviously longer than basal calyx tube, calyx limb discoid, yellow inside, with purple-red stripes and spots, about 13–18 mm in diameter, glabrous, and a throat dark red without spots, 4–6 mm wide.
Two new species of the genus Meleonoma Meyrick from China (Lepidoptera, Gelechioidea, Xyloryctidae)
Authors: Yin Aihui , Cai Yanpeng
Published: August 2019

Two new species ofMeleonomaMeyrick, 1914a (Gelechioidea, Xyloryctidae) from southeastern China are described:Meleonoma foliiformisYin,sp. nov.from Guangxi Province andM. projectaYin,sp. nov.from Fujian Province. Adults and male genitalia are described in detail. A list of theMeleonomaspecies occurring in China is given. The taxonomic position ofMeleonomahas been unstable, and under debate. Nonetheless, it is here tentatively placed in the family Xyloryctidae, following the latest molecular phylogenetic study concerning this genus.
A new species of the genus Dryinus Latreille (Hymenoptera, Dryinidae) from the USA
Authors: Speranza Stefano , Olmi Massimo , Guglielmino Adalgisa , Contarini Mario
Published: August 2019

A new species ofDryinusLatreille, 1804, is described from Georgia (USA).D. georgianussp. nov. is morphologically similar toD. mexicanus(Perkins, 1907) andD. splendidusGuglielmino and Olmi, 2013, but is distinguished by the lateral ocelli not touching the occipital carina (in the other two species, the lateral ocelli touch the occipital carina). The key to the females of the Nearctic species ofDryinusgroup 1 is modified to include the new taxon.
An annotated checklist of freshwater Copepoda (Crustacea, Hexanauplia) from continental Ecuador and the Galapagos Archipelago
Authors: Corgosinho Paulo Henrique Costa , Holynska Maria , Marrone Federico , Geraldes-Primeiro Luís José de Oliveira , dos Santos-Silva Edinaldo Nelson , Perbiche-Neves Gilmar , Lopez Carlos
Published: August 2019

An annotated checklist of the free-living freshwater Copepoda recorded in different regions in Ecuador (including the Amazon, the Andes, the coastal region, and the Galapagos Islands) is here provided. We revised all published records, critically evaluated the validity of each taxon and provided short taxonomic and biogeographical remarks for each one. A total of 27 taxa have been reported, including species and records at the generic level only. The species and taxa identified only up to the generic level belong to five families and 14 genera. The Cyclopoida is the most diverse group with 16 records belonging to species (or identified to the generic level only) and eight genera, followed by the Harpacticoida with six species, one identification to the generic level only, and four genera, and Calanoida with four species belonging to two genera. A total of 18 taxa are recorded for the Andes. Six have been recorded in the Amazon, two are recorded for the coastal region, and six for the Galapagos. One species is shared between the Amazon and the Andes. One species is shared between the coastal region and the Amazon. Seventeen are only reported from the Andes and four are only reported from the Amazon. At the current status of the knowledge, any attempt to analyze and generalize distributional patterns of copepods in Ecuador is premature due to the scarcity of available information, and evidently there is an urgent need for more extensive field collections. A few working hypothesis for future studies are identified.
Saúde, doença e cuidado: significados para jogadores de voleibol de alto rendimento/ Health, disease and care: meanings for high performance volleyball players
Authors: Soder Rafael Marcelo , Erdmann Alacoque Lorenzini , Guedes dos Santos José Luís , Oliveira Isabel Cristine , Silva Luiz Anildo Anacleto da , Peiter Caroline Cechinel
Published: August 2019

Objetivo: Compreender os significados atribuídos à saúde, à doença e ao cuidado por jogadores de voleibol de alto rendimento. Métodos: Trata-se de uma pesquisa qualitativa com base no referencial metodológico da Teoria Fundamentada nos Dados. A amostragem teórica do estudo foi composta por 34 sujeitos, incluindo atletas, ex-atletas, técnicos e dirigentes de clubes de voleibol. Os dados foram coletados por meio de entrevista em profundidade e analisados segundo codificação inicial e focalizada. Resultados: Obteve-se a categoria “Estando 100% para jogar: o cuidado com o corpo como definidor de saúde ou doença”, que é composta por oito subcategorias representando os significados de saúde, doença e cuidado. Considerações finais: Constatou-se que saúde e doença representam forças contrárias entre si. Conclui-se que, nessa disputa de forças, o cuidado busca equilibrar a intensidade de energia entre saúde e doença para tornar possível a prática esportiva.
Conhecimento de gestores e profissionais da rede de atenção psicossocial sobre matriciamento em saúde mental / Knowledge of managers and professionals of the psychosocial care network on mental health matrixing
Authors: Vasconcelos Marilena Silva de , Barbosa Valquiria Farias Bezerra
Published: August 2019

Objetivo: Identificar o conhecimento dos gestores e profissionais de saúde de um município do sertão pernambucano sobre o apoio matricial em saúde mental. Métodos:Trata-se de um estudo descritivo,de abordagem qualitativa, realizado no período de outubro de 2017 a janeiro de 2018. Foram entrevistados dez  profissionais da Rede de Atenção Psicossocial municipal, por meio de um roteiro semiestruturado. A análise do conteúdo das entrevistas foi desenvolvida segundo o método de análise textual discursiva. Resultados: Evidenciaram-se lacunas de conhecimento sobre matriciamento e dificuldades para reconhecer as ações de saúde mental que devem ser desenvolvidas na Atenção Primária à Saúde. A formação acadêmica deficitária de gestores e profissionais de saúde influencia negativamente o seu conhecimento conceitual e a sua habilidade de implementar ferramentas de matriciamento em saúde mental. As principais dificuldades para matriciar foram a falta de participação dos profissionais, o estigma da pessoa portadora de transtorno mental, assim como limitações no dimensionamento de recursos humanos, carga horária de trabalho e infraestrutura dos serviços de saúde. Considerações finais:As ações de educação permanente são importantes recursos de superação dessas problemáticas, potencializando a expansão das práticas matriciais.
Ações de cuidado na maternidade para prematuros tardios/ Care actions at maternity wardsfor late preterms
Authors: Teles Jéssica Machado , Bonilha Ana Lúcia De Lourenzi , Tronco Caroline Sissy
Published: August 2019

Objetivo: Refletir acerca das ações de cuidados aos prematuros tardios e suas mães apoiado nas boas práticas para a atenção ao recém-nascido. Métodos: Ensaio teórico-reflexivo, o qual discute as ações de cuidado nas primeiras 24 horas de vida dos prematuros tardios e sua relação com as boas práticas para a atenção ao recém-nascido.Resultados: Destaca-se a importância do cuidado na primeira hora de vida de prematuros tardios, especialmente o estímulo ao contato pele a pele e à amamentação, e a termorregulação. Considerações Finais: Fornecer informação à família sobre a prematuridade tardia é um dos aspectos de grande relevância no cuidado a estes recém-nascidos e incluir ações assistenciais de diversos profissionais frente à necessidade dos cuidados aos prematuros tardios.
 Gerenciamento de caso como modelo de cuidado: reflexão na perspectiva da Teoria de Imogene King/ Case management as a care model: thinking from the perspective of Imogene King’s Theory
Authors: Mantovani Maria de Fátima , Da Silva Angela Tais Mattei , Ulbrich Elis Martins , Arthur Juliana Perez
Published: August 2019

Objetivo: Refletir sobre os pontos de intersecção entre a Teoria do Alcance de Metas e o modelo de gerenciamento de caso. Métodos: Realizou-se uma reflexão com base na análise da literatura em relação ao gerenciamento de caso e na teoria de enfermagem de Imogene King, partindo da compreensão de que ambos possuem pontos em comum para melhoria da qualidade de saúde, destacando-se a pactuação de metas. Resultados: Observou-se que há pontos convergentes como: a interação entre os atores do processo de cuidado que possibilita a literacia do indivíduo e a busca pela autonomia, o encontro inicial entre enfermeiro e paciente que buscam o desenvolvimento do vínculo, a comunicação e a pactuação de metas com o intuito de melhoria na saúde. Conclusões: Considera-se que a teoria, embora tenha sido publicada nos anos de 1980, continua atual para a Enfermagem e tem relação com modelos utilizados contemporaneamente no cuidado à saúde, como o gerenciamento de caso.
 Parto em posição não supina: percepção de profissionais na assistência hospitalar/ Birth in a non-supine position: perception of professionals in hospital care
Authors: Da Silva Camilly Roberta , Pereira Luciana Barbosa , Vogt Sibylle Emilie , De Oliveira Dias Cristiano Leonardo
Published: August 2019

Introdução: a posição supina predomina no contexto nacional de assistência ao parto vaginal, embora haja evidências científicas favoráveis à adoção de outras posições no período expulsivo, com vantagens para mãe e recém-nascido. Objetivo: desvelar a percepção de profissionais de saúde que trabalham em bloco obstétrico de Hospital Universitário acerca do parto em posição não supina. Métodos: estudo qualitativo, descritivo, realizado com trabalhadores desse setor. Foram entrevistados 10 profissionais das áreas médica ou de enfermagem. Dados coletados por entrevistas semiestruturadas e submetidos à Análise de Conteúdo. Resultados: foram desveladas três categorias temáticas: reconhecendo vantagens e estímulos ao uso de posições não litotômicas; percebendo obstáculos à mudança de paradigmas na posição de parir; vivenciando o parto não litotômico na perspectiva do profissional. A análise dos dados revelou divergências entre o conhecimento e a prática, destacando-se a influência do modelo biomédico na rotina de assistência ao parto. Considerações finais: sugere-se a realização de educação permanente e sensibilização da equipe de assistência à parturiente além de seu empoderamento por meio de orientação pré-natal pertinente para a efetivação das boas práticas na atenção ao parto incluindo o uso de posições não supinas no período expulsivo.
The BACH1–HMOX1 Regulatory Axis Is Indispensable for Proper Macrophage Subtype Specification and Skeletal Muscle Regeneration
Authors: Patsalos Andreas , Tzerpos Petros , Halasz Laszlo , Nagy Gergely , Pap Attila , Giannakis Nikolas , Lyroni Konstantina , Koliaraki Vasiliki , Pintye Eva , Dezso Balazs , Kollias George , Spilianakis Charalampos G. , Nagy Laszlo
Published: August 2019

The infiltration and subsequent in situ subtype specification of monocytes to effector/inflammatory and repair macrophages is indispensable for tissue repair upon acute sterile injury. However, the chromatin-level mediators and regulatory events controlling this highly dynamic macrophage phenotype switch are not known. In this study, we used a murine acute muscle injury model to assess global chromatin accessibility and gene expression dynamics in infiltrating macrophages during sterile physiological inflammation and tissue regeneration. We identified a heme-binding transcriptional repressor, BACH1, as a novel regulator of this process. Bach1 knockout mice displayed impaired muscle regeneration, altered dynamics of the macrophage phenotype transition, and transcriptional deregulation of key inflammatory and repair-related genes. We also found that BACH1 directly binds to and regulates distal regulatory elements of these genes, suggesting a novel role for BACH1 in controlling a broad spectrum of the repair response genes in macrophages upon injury. Inactivation of heme oxygenase-1 (Hmox1), one of the most stringently deregulated genes in the Bach1 knockout in macrophages, impairs muscle regeneration by changing the dynamics of the macrophage phenotype switch. Collectively, our data suggest the existence of a heme–BACH1­–HMOX1 regulatory axis, that controls the phenotype and function of the infiltrating myeloid cells upon tissue damage, shaping the overall tissue repair kinetics.
Magnetic resonance imaging: Where is it going to take us?
Authors: Rijke A.
Published: August 2019

No abstract available.
High resolution CT of the lungs: The Groote Schuur experience
Authors: Goodman H. T.
Published: August 2019

One hundred and sixty-eight high resolution computer tomography (HRCT) examinations of lungs performed during 52 consecutive weekly CT sessions between 12/9/95 and 29/10/96 are analysed. One hundred and sixty-two hard film copies of these examinations could be found for re-evaluation and these were the studies that were analysed. They form the bulk of the HRCT examinations of the lungs done at our institution during this period.
Differentiation between sigmoid volvulus and free air on supine abdominal radiographs: The 'liver overlap sign' versus the 'football sign'
Authors: Van Gelderen W. F.C.
Published: August 2019

Two cases are presented which emphasize the difficulty of differentiating between a sigmoid volvulus, where the 'liver overlap sign' is the only sign present, and perforation of a hollow viscus where the only sign on a supine abdominal radiograph may be the 'football sign' simulating a 'liver overlap sign'. In the case of sigmoid volvulus described in this report, the correct diagnosis established only with much difficulty and after further conventional radiographs and contrast studies.
Large vein of Galen malformation associated with an apical ventricular septal defect and a patent ductus arteriosus in an infant: A case report
Authors: Szkup P. , Cilliers A. M.
Published: August 2019

A four month old male infant who had a transarterial embolization of a large vein of Galen malformation attempted is reported. The infant presented in cardiac failure and a hydrocephalus. In addition the rare association of an apical ventricular septal defect and a patent ductus arteriosus with pulmonary hypertension was diagnosed. A staged transarterial coil embolisation using microcoils was commenced. The first attempt was uneventful. This was followed by the unfortunate demise of the patient from an intercurrent nosocomial pneumonia.
Perforated peptic ulcer imaged directly by computed tomography
Authors: Loftus W. K. , Chow L. T.C , Metreweli C.
Published: August 2019

Perforation occurs in 10% of patients with peptic ulcer. Computed tomography (CT) may show free intraperitoneal gas and/or extravasation of oral contrast. While the location of the free gas or contrast may suggest the site of perforation, the perforation itself is difficult to demonstrate. We present a case of perforated ulcer in which the perforation was imaged directly by CT.
Diagnostic radiology and the primary health care approach
Authors: Beningfield Steve
Published: August 2019

No abstract available.
Anterior spinal artery syndrome after the embolisation of bronchial arteries to control hemoptysis: A warning
Authors: Szkup P. , Hopley M. , Mochan A.
Published: August 2019

Spinal cord ischaemia following embolisation of bronchial arteries to control hemoptysis is reported.  This rare complication occurred despite lack of visualisation of blood supply to the spinal cord during preliminary arteriography.
International College of Radiology
Authors: Corr Peter
Published: August 2019

No abstract available.
Rupture of renal artery aneurysms in pregnancy
Authors: Solwa Y. , Bereczky Z. B. , Corr P. , Maharajh J. , Sanyika C.
Published: August 2019

No abstract available.
Gastropericardial fistula complicating an adenocarcinoma of the stomach
Authors: Shaik A. S. , Singh B. , Maharajh J. , Moodley J.
Published: August 2019

No abstract available.
An obscure cause of stroke: Basilar artery fenestration
Authors: Hoffmann M. , Royston D. , Corr P.
Published: August 2019

No abstract available.
Ethiopian Radiology
Authors: Beningfield Steve
Published: August 2019

No abstract available.
An investigation of dolphin neocortex using computed tomography and magnetic resonance Imaging
Authors: Tschudin AJ-PC , Hurribunce R. , Peddemors V. M.
Published: August 2019

The value of the conventional medical imaging applications of Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) to areas such as medical diagnosis and surgical planning are widely documented; however, less conventional uses also exist for such technology. This paper documents an example of the diverse, interdiscipl inary value of neuroradiological techniques such as CT and MRI. An assumption has been made, in the absence of data for dolphins, that the uniquely high relative neocortex volume in primates is responsible for setting them apart from all other orders of mammals, in terms of social intelligence. An investigation of dolphin brain structure was undertaken to verify or dismiss this assertion using three species ofdiffering social structure: sol itary humpback (Sousachinensis), social bottlenose (Tursiops truncatus) and gregarious common (Delphinus delphis) dolphins. CT provided good quality images for calculation of cranial volume but only permitted gross imaging of the supra- and infratentorial regions. MRI provided greater differentiation of the different brain regions, therebya"owing volumetric measurements of the neocortical region for all subjects. There was no significant difference in neocortex calculations from fresh and frozen material, suggesting that this technique may be used on rare specimens which are frozen before examination by biologists. Correlation of neocortical development with group size was significant (pO.OOl ).
Perfil Epidemiológico da Leishmaniose Tegumentar Americana nos anos de 2013 a 2017 na cidade de Altamira, sudoeste do Pará, Brasil
Authors: Colaça Bianca de Assunção
Published: August 2019

Objetivo: Este estudo busca analisar as características epidemiológicas da Leishmaniose Tegumentar Americana no município de Altamira, Pará, Brasil, entre os anos de 2013 a 2017. Método: Os dados foram coletados do Sistema de Informação de Agravos de Notificação (SINAN) em relação à Leishmaniose Tegumentar Americana sobre a região de Altamira dos anos 2013 a 2017. Tais dados foram analisados, e feito então uma pesquisa retrospectiva desses cinco anos. Posteriormente foram organizados em tabelas e gráficos. Resultados: Entre os anos 2013 e 2017 foram notificados 587 casos, acometendo, em sua maioria, homens, indivíduos de baixa escolaridade, faixa etária de 15 a 39 anos. A forma cutânea sobressaiu-se em relação à forma mucosa. O número de indivíduos que residiam em zona urbana e na zona rural foram acometidos pela doença de forma equivalente. Conclusão: O município de Altamira é acometido de forma endêmica pela Leishmaniose Tegumentar, o que demostra, dessa maneira, a necessidade da adoção de medidas de controle e prevenção. Ademais, é necessário que as unidades de saúde contribuam com atividades de educação em saúde e busca ativa a fim de se diminuir o número de casos da doença.
Tensões Organizacionais Inerentes como Elemento Distintivo à Natureza dos Negócios Sociais
Authors: Walchhütter Seimor , Iizuka Edson Sadao
Published: August 2019

Os Negócios Sociais (NS) são como organizações lucrativas e que possuem, simultaneamente, um propósito social e, em alguns casos, ambiental.  A necessidade de conciliar esses objetivos pode fazer com que os NS sofram tensões organizacionais específicas em suas atividades. Nesse sentido, a complexidade que apresenta esse campo, devido ao seu caráter aparentemente axiomático, é justamente o fator motivacional dessa pesquisa que tem por objetivo, compreender as tensões relativas aos NS. Por meio de uma revisão da literatura em NS e de achados empíricos a partir de um estudo de casos múltiplos, foi possível identificar que os NS enfrentam desafios únicos ao combinarem objetivos distintos. Os resultados desta pesquisa demonstram que as tensões que ocorrem nas quatro dimensões organizacionais identificadas nos estudos de Smith, Gonin e Besharov (2013) proporcionam um desequilíbrio permanente característico à esse tipo organizacional que o distingue de organizações provenientes de outros setores da sociedade, identificadas nesse artigo como: tensões relacionados ao desempenho, à aspectos organizacionais, ao pertencimento e à aprendizagem, as quais, de acordo com a revisão teórica e achados empíricos, são inerentes aos NS.
Fatores da Qualidade do Serviço que Afetam a Fidelidade dos Alunos e suas Intenções em Recomendar a Escola: um estudo no setor da educação pública
Authors: Pereira Filho Evadio , Añez Miguel Eduardo Moreno
Published: August 2019

Este estudo desenvolveu um ensaio teórico-empírico com 1550 alunos do ensino médio de escolas públicas paraibanas. O objetivo foi avaliar o impacto da qualidade do serviço educacional sobre intenções em recomendar a terceiros e fidelidade dos discentes, bem como em que medida esses efeitos se diferem em relação aos fatores demográficos e motivacionais. Foram apreendidas as expectativas do alunado e suas percepções de desempenho em relação a 18 atributos. Capturou-se ainda o quão propensos estavam em rematricular-se e em recomendar a escola. Ao empregar regressão linear múltipla, verificou-se que quatro e três atributos, respectivamente, apresentaram efeito significativo sobre fidelidade dos consumidores e intenção em recomendar a organização. Atendimento do pessoal administrativo e imagem corporativa constituem-se pontos de interseção, impactando positivamente nas duas variáveis comportamentais. Heterogeneidades no impacto da qualidade do serviço sobre fidelidade e intenções de recomendar foram percebidas nos agrupamentos de faixa etária, renda familiar, motivação e gênero.
Impacto do Sistema de Gestão de Transporte no Desempenho das Operações e na Relação com Fornecedores de Serviço de Transporte: uma percepção dos usuários
Authors: Goettems Liciane Carneiro Magalhães , Maçada Antônio Carlos Gastaud , Mallmann Gabriela Labres
Published: August 2019

As empresas estão investindo em Tecnologia da Informação (TI) e aproveitando, ao máximo, as vantagens que ela proporciona, para mudar os processos de negócio e melhorar o desempenho das operações. Dentro deste contexto, pretende-se investigar, aqui, o uso de um Sistema de Gestão de Transporte (TMS). O objetivo geral deste estudo é avaliar o impacto do uso do TMS e sua relação com o desempenho das operações de transporte das empresas e com os prestadores de serviços de transporte na percepção dos usuários. O método utilizado foi a pesquisa survey e um modelo conceitual foi elaborado e validado utilizando modelagem de equações estruturais (PLS-SEM). O resultado indica que os benefícios de um TMS têm impacto positivo no desempenho das operações de transporte, que, por sua vez, têm impacto positivo na relação com fornecedores de serviço de transporte.
Design and evaluation of CO2 observation network to optimize surface CO2 fluxes in Asia using observation system simulation experiments
Authors: Park Jun , Kim Hyun Mee
Published: August 2019

Abstract. Continuous efforts have been made to monitor atmospheric CO2 as it is one of the most influential greenhouse gases in Earth's atmosphere. Inverse modeling, which is one of the methods to carry out such monitoring, derives estimated CO2 mole fractions in the air from calculated surface carbon fluxes using model and observed CO2 mole fraction data. Although observation data is crucial for successful modeling, comparatively fewer in-situ observation sites are located in Asia compared to Europe or North America. Based on the importance of the terrestrial ecosystem of Asia for global carbon exchanges, more observation stations and an effective observation network design are required. In this paper, several observation network experiments were conducted to optimize the surface carbon flux of Asia using CarbonTracker and observation system simulation experiments (OSSE). The impacts of the redistribution of and additions to the existing observation network of Asia were evaluated using hypothetical in-situ observation sites. In the case of the addition experiments, 10 observation stations, which is a practical number for real implementation, were added through three strategies: random addition, the influence matrix (i.e., self-sensitivity), and ecoregion information within the model. The simulated surface carbon flux in Asia in summer can be improved by redistributing the existing observation network. The addition experiments revealed that considering both the distribution of normalized self-sensitivity and ecoregion information can yield better simulated surface carbon fluxes compared to random addition, regardless of the season. This study provides a diagnosis of the existing observation network and useful information for future observation network design in Asia to estimate the surface carbon flux, and also suggests the use of an influence matrix for designing carbon observation networks. Unlike other previous observation network studies with many numerical experiments for optimization, comparatively fewer experiments were required in this study. Thus, the methodology used in this study may be used for designing observation networks for monitoring greenhouse gases at both continental and global scales.
From Canals to the Coast: Dissolved Organic Matter and Trace
Metal Composition in Rivers Draining Degraded Tropical
Peatlands in Indonesia
Authors: Gandois Laure , Hoyt Alison May , Mounier Stéphane , Le Roux Gaël , Harvey Charles Franklin , Claustres Adrien , Nuriman Mohammed , Anshari Gusti
Published: August 2019

Abstract. Worldwide, peatlands are important sources of dissolved organic matter (DOM) and trace metals (TM) to surface waters and these fluxes may increase with peatland degradation. In Southeast Asia, tropical peatlands are being rapidly deforested and drained. The black rivers draining these peatland areas have high concentrations of DOM, and the potential to be hotspots for CO2 release. However, the fate of this fluvial carbon export is uncertain, and its role as a trace metal carrier has never been investigated. This work aims to address these gaps in our understanding of tropical peatland DOM and associated elements in the context of degraded tropical peatlands of Indonesian Borneo. We quantified dissolved organic carbon and trace metals concentrations in the dissolved and fine colloidal (
Links between Baltic Sea submarine terraces and groundwater sapping
Authors: Jakobsson Martin , O'Regan Matt , Mörth Carl-Magnus , Stranne Christian , Weidner Elizabeth , Hansson Jim , Gyllencreutz Richard , Humborg Christoph , Elfwing Tina , Norkko Alf , Norkko Joanna , Nilsson Björn , Sjöström Arne
Published: August 2019

Abstract. Submarine Groundwater Discharge (SGD) influences ocean chemistry, circulation, spreading of nutrients and pollutants, and shapes seafloor morphology. In the Baltic Sea, SGD was linked to the development of terraces and semi-circular depressions mapped in an area of the southern Stockholm Archipelago, Sweden, in the 1990s. We mapped additional parts of the Stockholm Archipelago, areas in Blekinge, southern Sweden, and southern Finland using high-resolution multibeam sonars and sub-bottom profilers to investigate if the seafloor morphological features discovered in the 1990s are widespread and to further address the hypothesis linking SGD to their formation. Sediment coring and seafloor photography conducted with a Remote Operated Vehicle (ROV) and divers add additional information to the geophysical mapping results. We find that terraces, with general bathymetric expressions of about 1 m and lateral extents of sometimes > 100 m, are widespread in the surveyed areas of the Baltic Sea and are consistently formed in glacial clay. Semi-circular depressions, however, are only found in a limited part of a surveyed area east of the island Askö, southern Stockholm Archipelago. Our study supports the basic hypothesis of terrace formation initially proposed in the 1990s, i.e. groundwater flows through siltier permeable layers in glacial clay to discharge at the seafloor, leading to the formation of a sharp terrace when the clay layers above seepage zones are undermined enough to collapse. By linking the terraces to a specific geologic setting, our study further refines the formation hypothesis and forms the foundation for a future assessment of SGD in the Baltic Sea that may use marine geological mapping as a starting point. We propose that SGD through the sub-marine seafloor terraces is most likely intermittent and linked to periods of higher groundwater levels, implying that to quantify the contribution of freshwater to the Baltic Sea through this mechanism, more complex hydrogeological studies are required.
Development of a distributed hybrid seismic–electrical data acquisition system based on the Narrowband Internet of Things (NB-IoT) technology
Authors: Li Wenhao , Zhang Qisheng , Zhang Qimao , Guo Feng , Qiao Shuaiqing , Liu Shiyang , Luo Yueyun , Niu Yuefeng , Heng Xing
Published: August 2019

Abstract. The ambiguity of geophysical inversions, which is based on a
single geophysical method, is a long-standing problem in geophysical
exploration. Therefore, multi-method geophysical prospecting has become a
popular topic. In multi-method geophysical prospecting, the joint inversion
of seismic and electric data has been extensively researched for decades.
However, the methods used for hybrid seismic–electric data acquisition that
form the base for multi-method geophysical prospecting techniques have not
yet been explored in detail. In this work, we developed a distributed,
high-precision, hybrid seismic–electrical data acquisition system using
advanced Narrowband Internet of Things (NB-IoT) technology. The system was
equipped with a hybrid data acquisition board, a high-performance embedded
motherboard based on field-programmable gate array, an advanced RISC
machine, and host software. The data acquisition board used an ADS1278
24 bit analog-to-digital converter and FPGA-based digital filtering
techniques to perform high-precision data acquisition. The equivalent input
noise of the data acquisition board was only 0.5 µV with a sampling
rate of 1000 samples per second and front-end gain of 40 dB. The multiple
data acquisition stations of our system were synchronized using
oven-controlled crystal oscillators and global positioning system
technologies. Consequently, the clock frequency error of the system was less
than 10−9 Hz at 1 Hz after calibration, and the synchronization accuracy
of the data acquisition stations was ±200 ns. The use of
sophisticated NB-IoT technologies allowed the long-distance wireless
communication between the control center and the data acquisition stations. In
validation experiments, it was found that our system was operationally
stable and reliable, produced highly accurate data, and it was functionally
flexible and convenient. Furthermore, using this system, it is also possible
to monitor the real-time quality of data acquisition processes. We believe
that the results obtained in this study will drive the advancement of
prospective integrated seismic–electrical technologies and promote the use
of IoT technologies in geophysical instrumentation.
Development of a 2-way coupled ocean-wave model: assessment on a
global NEMO(v3.6)-WW3(v6.02) coupled configuration
Authors: Couvelard Xavier , Lemarié Florian , Samson Guillaume , Redelsperger Jean-Luc , Ardhuin Fabrice , Benshila Rachid , Madec Gurvan
Published: August 2019

Abstract. This paper describes the implementation of a coupling between a three-dimensional ocean general circulation model (NEMO) and a wave model (WW3) to represent the interactions of the upper oceanic flow dynamics with surface waves. The focus is on the impact of such coupling on upper-ocean properties (temperature and currents) and mixed-layer depths (MLD) at global eddying scales. A generic coupling interface has been developed and the NEMO governing equations and boundary conditions have been adapted to include wave-induced terms following the approach of McWilliams et al. (2004) and Ardhuin et al. (2008). In particular, the contributions of Stokes-Coriolis, Vortex and surface pressure forces have been implemented on top of the necessary modifications of the tracer/continuity equation and turbulent closure scheme (a 1-equation TKE closure here). To assess the new developments, we perform a set of sensitivity experiments with a global oceanic configuration at 1/4° resolution coupled with a wave model configured at 1/2° resolution. Numerical simulations show a global increase of wind-stress due to the interaction with waves (via the Charnock coefficient) particularly at high latitudes. The modifications brought to the TKE closure scheme and the inclusion of a parameterization for Langmuir turbulence lead to a significant increase of the mixing thus helping to deepen the MLD. This deepening is mainly located in the Southern Hemisphere and results in reduced sea-surface currents and temperatures.
Comparison of probabilistic post-processing approaches for improving NWP-based daily and weekly reference evapotranspiration forecasts
Authors: Medina Hanoi , Tian Di
Published: August 2019

Abstract. Reference evapotranspiration (ETo) forecasts play an important role in agricultural, environmental, and water management. This study evaluated probabilistic post-processing approaches, including the nonhomogeneous Gaussian regression (NGR), affine kernel dressing (AKD), and Bayesian model averaging (BMA) techniques, for improving daily and weekly ETo forecasting based on single or multiple numerical weather predictions (NWP) from The International Grand Global Ensemble (TIGGE), including the European Centre for Medium-Range Weather Forecasts (ECMWF), the National Centers for Environmental Prediction Global Forecast System (NCEP), and the United Kingdom Meteorological Office forecasts (UKMO). We found that the NGR, the AKD and the BMA methods greatly improved the skill and reliability of the ETo forecasts compared to a linear regression bias correction method, due to the considerable adjustments on the spread of ensemble forecasts. The methods were especially effective when applied over the weekly NCEP forecasts, followed by UKMO forecasts. The post-processed weekly forecasts had much lower rRMSE (between 8 %–11 %) than the persistence-based weekly forecasts (22 %), and the post-processed daily forecasts (13 %–20 %). Compared with the single model ETo forecasts based on ECMWF, multi-model ensemble ETo forecasts showed higher skill at short lead times (1 or 2 days) and over the southern and western regions of the United States. The improvement was higher at the daily timescale than at the weekly timescale. The NGR and AKD methods performed the best, but the NGR method is more flexible and computationally efficient than the other methods. In summary, the study demonstrated that the three probabilistic approaches generally outperform conventional procedures based on the simple bias correction of single model forecasts, with the NGR post-processing of the ECMWF and ECMWF-UKMO forecasts providing the most efficient ETo forecasting.