bluuebunny/crossref_metadata_2025 huggingface dataset:
GYDYTOJŲ ODONTOLOGŲ IR GYDYTOJŲ ODONTOLOGŲORTOPEDŲ PAGRINDINIAI PASIRINKIMO KRITERIJAI PROTEZUOJANT DANTIS VAINIKĖLIAIS, UŽKLOTAIS AR DALINIAIS VAINIKĖLIAIS
Authors: Sabulis Adomas , Baltrušaitytė Paulė , Žekonis Gediminas
Published: August 2019

Aktualumas. Šiais laikais taip sparčiai augant technologijų pramonei, odontologijoje atsiranda vis daugiau naujų, kokybiškesnių bei estetiškesnių medžiagų, naujų dantų gydymo metodų bei procedūrų atlikimo technikų. Tokia didėjanti pasiūla sparčiai augina paklausą ir pacientų poreikiai bei reikalavimai, ypač estetiniai, kelia vis aukštesnius gydymo standartus gydytojams odontologams. Medžiaga ir metodai. 2019 m. buvo sudaryta anketinė apklausa, skirta gydytojams odontologams (GO) ir gydytojams odontologams-ortopedams (GOO). Rinkti atsakymams anketa buvo patalpinta tiek internetinėje erdvėje, tiek dalinta popieriniu variantu. Anketą sudarė bendrosios informacijos klausimynas bei dvi klinikinės situacijos su klausimais, skirtais išsiaiškinti pagrindinius pasirinkimų skirtumas tarp GO ir GOO. Iš viso surinkta 427 atsakytų anketų, kurių duomenys statistiškai analizuoti ir lyginti naudojant IBM SPSS Statistics programą bei statistinius kriterijus: požymių lenteles ir diagramas, Chi- kvadrato kriterijų bei Kronbacho (Cronbach) alfa kriterijų. Rezultatai. 1 – oje klinikinėje situacijoje dauguma – 91,9% GOO rinkosi netiesioginį danties atstatymo būdą, kai tuo tarpu iš GO tik 56,6% šioje situacijoje rinkosi netiesioginę restauraciją. 2 – oje klinikinėje situacijoje 99,4% GOO rinkosi netiesioginę danties restauraciją, o iš GO – tokį atsakymą žymėjo 72,7%. Abejose situacijose populiariausia restauracija buvo keraminis užklotas. Gydytojai, kurie rinkosi tiesio
gines restauracijas, populiariausią medžiagą joms nurodė dervinį kompozitą. Išvados. Daug daugiau GOO nei GO renkasi netiesiogines restauracijas dantų defektams atstatyti. Populiariausia restauracija abejose tiriamųjų grupėse buvo danties užklotas. Kaip pagrindinius ir svarbiausius restauracijos pasirinkimo kriterijus gydytojai įvardijo danties būklę, estetinius reikalavimus bei paciento pageidavimus.
DIAGNOSTINIŲ TYRIMŲ PATIKIMUMAS DIAGNOZUOJANT MENJERO LIGOS TIPUS
Authors: Paškonienė Aistė , Markevičiūtė Vėtra , Padvariškytė Sigita , Lesinskas Eugenijus
Published: August 2019

Darbo tikslas. Įvertinti diagnostinių tyrimų patikimumą norint diferencijuoti Menjero ligą į tipus: tikėtina ir neabejotina Menjero ilga. Darbo metodika. 2017m. Vilniaus universitetinėje ligoninėjė, Santaros klinikose (VUL SK), Ausų, nosies ir gerklės ligų centre buvo atliktas prospektyvinis tyrimas, jame dalyvavo 50 tiriamųjų, kuriems buvo nustatyta Menjero liga (ML). Tiriamieji, remiantis 2015 m. Barany draugijos priimtais kriterijais, buvo suskirstyti į dvi grupes – tikėtiną ir neabejotiną ML. Visiems tiriamiesiems buvo vertinta klinika, ligos trukmė, audiometrija, videonistagmometrija (VNG) kalorinis testas, posturometrija, 3T smilkinkaulių MRT su gadolinio (Gd) kontrastu vertinti endolimfos vandenę. Rezultatai. 26 tiriamiesiems nustatyta tikėtina ir 24 tiriamiesiems neabejotina Menjero liga. Vertindami simptomų intensyvumą, ligos trukmę neradome statistinio patikimumo tarp ligos tipų p>0,05. Vidutinis rizikos nukristi indeksas (RFI) statistiškai reikšmingai nesiskiria tarp tikėtinos ir neabejotinos ML (p>0,05). Videonistagmometrija (VNG) kalorinis mėginys (vienpusis susilpnėjimas (UW%) ir/ar krypties vyravimas (DP%) yra statistiškai reikšmingas norint diferencijuoti ML į tipus p<0,05. 3T smilkinkaulių MRT su Gd kontrastu vertintant endolimfos vandenę statistiškai reikšmingas p<0,05 norint diferencijuoti Menjero ligą į tipus. Audiometrijos tyrimo rezultatų pakenktos ausies decibelų (dB) vidurkis statistiškai reikšmingai nesiskyrė tarp grupių (p>0,05). Išvados. Diferencijuojant Menjero ligą į tipus gauta, kad statistiškai reikšmingi instrumentiniai tyrimai yra: VNG kalorinis mėginys ir 3T smilkinkaulių MRT su Gd kontrastu.
THE USE OF COMPULSORY MEASURES OF MEDICAL CHARACTER (CMMC) IN LATVIA – PROBLEMS AND SOLUTIONS
Authors: Apsite Anita , Konevnina Aleksandra , Neperte Diana
Published: August 2019

The authors in their report give a description of the types of CMMC in Latvia. Particular attention is paid to the problem of carrying out psyciatric expertise in Latvia, as well as to the peculiarities of legislation that can cause inaccuracies in conducting and monitoring CMMC. As one of the main problems is identified CMMC in outpatient practice: how are CMMC controlled, who is responsible for control, cooperation between doctor and law enforcement agencies, financing issues.
HIV-POSITIVE AND HIV-NEGATIVE FEMALES WITH OPIOID DEPENDENCE: PSYCHOSOCIAL AND CLINICAL CHARACTERISTICS
Authors: Stanko Edvard , Igumnov Sergey
Published: August 2019

Abstract. The objective of the study was to explore clinical, psychological and social characteristics of female injectable opioid users (FIOUs) with different HIV status living in Republic of Belarus. Materials and methods. A cohort of 217 FIOUs were examined (104 HIV-positive and 113 HIV-negative patients. To assess patient social functioning, quality of life, and craving for narcotic substances the Scale of social functioning, SF-36 and Scale of drugs craving were used. Results. The majority of patients had frequent change of employment place and reported absence from work (25.9% in HIV-positive group and 26.5% in HIV-negative group; P>0.05). HIV-positive patients reported low professional qualification and education level significantly more often than HIV-negative patients (20.1% vs 13.2%, p<0.05, and 43.3% vs. 36.2%, p<0.05, respectively). They also characterized family climate as “hostile” more often (80.7% vs. 61.0%, p<0.05). Both groups reported high rates of parental alcohol abuse (17.3% in HIV-positive and 14.1% in HIV-negative individuals, p>0.05), and of parental divorces (23.1% and 28.3%, p>0.05, respectively). Conclusion. Female injectable opioid users have marked social disfunction involving social and professional domains. Specific needs of this group of mental healthcare users need to be addressed.
De sueños de ‘colonización individual’ al trabajo colectivo: la experiencia de campesinos en la Región de Siuna durante los años ochenta
Authors: Soto Joya Fernanda
Published: August 2019

A partir de las experiencias de mujeres y hombres campesinos en la región de Siuna, el artículo describe el impacto de la política agraria del Gobierno Sandinista en los años ochenta en las zonas rurales de Nicaragua.
DIFERENTES SABERES IMPLICADOS NO CUIDADO DE SAÚDE RIBEIRINHO: ANÁLISE TEÓRICA
Authors: Da Silva Vilas Bôas Luana Michele , De Oliveira Denize Cristina
Published: August 2019

O objetivo do texto é problematizaras diferenças estabelecidas entre o saber popular e o científico praticado, sobre à luz das comunidades ribeirinhas do Baixo Madeira, Porto Velho-RO, Brasil, que recorrem ao saber profissional oficial, folk e popular na escolha do itinerário terapêutico. Trata-se de estudo teórico-reflexivo que utilizou a literatura existente, a partir dos estudos socioantropológicos que abordam o processo saúde-doença e alguns conceitos que possibilitam a construção de um olhar ampliado acerca do cuidado de saúde ribeirinho. Trata-se de saberes que compõem a realidade do contexto ribeirinho, de modos distintos, considerados por vezes excludentes, porém são complementares. Ambas as formas de saber estão presentes nas práticas de saúde realizadas nessas comunidades, seja pelos profissionais de saúde retraduzindo o saber oficial, ou por meio dos especialistas do saber local.
O SABER FAZER KONDURI: ENTRELAÇO CULTURAL DOS POVOS INDÍGENAS E QUILOMBOLAS DO RIO TROMBETAS
Authors: Alves Ribeiro Alyson Fernando
Published: August 2019

O presente artigo descreve uma vivência da II expedição amazônica organizada e executada por discentes e docentes do Programa de Pós- Graduação em Geografia da Universidade Federal de Rondônia. Busca analisar as relações culturais afro-indígenas da bacia do Rio Trombetas, através de um olhar sensível sobre a cerâmica Konduri, praticada por comunidades indígenas do baixo amazonas, que na convivência com os cativos nos quilombos, enraizaram no saber fazer desse povo. Na concretude deste intento foi realizado trabalhos de campo as comunidades quilombolas do Moura e Boa Vista localizados no município de Oriximiná-PA. Foi possível restrito fotográfico das cerâmicas e entrevista com artesões e artesãs dessa cultura milenar na casa do artesão, espaço no qual esse saber-fazer, social e histórico é repassado de geração a geração. Sendo assim, foi possível constatar que os quilombolas reconhecem-se, como povos de “ sangue misturados”, tendo na prática da cultura Konduri uma importância na sua formação étnico- cultural como também um elemento de resistência e luta pelos seus direitos constitucionais.
O JACARÉ E O ESTREITO DE BERING: ETNOGRAFIAS E DIÁLOGOS INTERCULTURAIS NO ENSINO
Authors: Moura Julia Lobato Pinto de , Magalhães Maria Beatriz Lima de , Martins Rosimere Silva de Freitas
Published: August 2019

O artigo objetiva apresentar uma proposta de ensino de Geografia sobre migrações ancestrais e ocupação do continente americano, atenta às diretrizes da lei 11645/2008 e que utiliza, como recurso didático, narrativas de tradição oral de povos indígenas do Acre. Inspiram-nos as proposições teórico-metodológicas de Santos (2007) e sua defesa por uma ecologia e diálogo de saberes, e de Claval (1999, 2006) e suas contribuições para a definição do campo etnogeográfico. Este trabalho foi construído a partir de uma pesquisa bibliográfica e documental, e é também parte dos resultados de um projeto de extensão universitária desenvolvido em escolas de Rio Branco, Acre, onde a proposta de ensino foi aplicada. A analogia da narrativa sobre “o jacaré que serviu de ponte”, contada entre os povos Katukina e Huni Kuin, com a teoria do Estreito de Bering sobre a ocupação do continente americano, já foi apontada pelos professores indígenas em ACRE (2002). Este artigo vem corroborar a ideia de que as narrativas de tradição oral podem ser tratadas como explicações para fenômenos socioespaciais, e possuem um grande potencial como recurso didático em aulas de Geografia atentas à pluralidade epistêmica e cultural dos conhecimentos socioespaciais.
REGATÕES E COMERCIANTES NA FRONTEIRA DO RIO ABUNÃ/AMAZÔNIA
Authors: Da Silva José Rubisten
Published: August 2019

Neste artigo, analisamos a ação dos regatões na fronteira do Brasil com a Bolívia, ao longo do rio Abunã e seus afluentes, nas décadas de 1910 a 1940. Esses agentes comerciais desenvolveram suas atividades no interior das unidades produtivas da economia da borracha, a partir das brechas deixadas pelo sistema de aviamento na Amazônia. Assim, para o desenvolvimento desse trabalho, realizamos levantamento bibliográfico de autores e obras que trataram do tema em questão, bem como, analisamos entrevistas orais realizadas com atores sociais que exerceram várias atividades nos seringais do vale do rio Abunã. O comércio da borracha definiu o padrão sócio-espacial do interior da Amazônia, enquanto que a presença dos regatões caracterizou-se como um novo componente (do complexo do seringal), peculiar na paisagem na região. Esses mascates fluviais, inicialmente, praticavam o escambo com os nativos da Amazônia, trocando bugigangas com produtos regionais. Essa realidade atraiu centenas de estrangeiros que desenvolveram o comércio de regateio na região. A grande extensão do vale do rio Abunã isolou os seringais, permitindo a ação dos regatões. Os vínculos comerciais eram múltiplos, onde parte dos regatões representavam as casas aviadoras de Belém e Manaus, ou trabalhavam por conta própria. Assim, os mascates itinerantes estabeleceram complexas relações comerciais com as populações ribeirinhas, tendo que enfrentar a oposição de vários seringalistas (e às vezes, da Igreja). Em outros casos, estavam a serviço de algum seringalista-comerciante regional. Alguns regatões estabeleceram relações comerciais clandestinas com seringueiros que violavam os regulamentos dos seringalistas A majoração das mercadorias garantia altos lucros aos mascates fluviais. No entanto, os mascates tiveram uma participação importante no contexto economia da borracha, pois, em suas pequenas embarcações desafiavam todas as adversidades geográficas para abastecerem os seringais, vilas e povoados na fronteira do Brasil com a Bolívia. Com a decadência da economia extrativista, o desenvolvimento das cidades e a construção de rodovias, esta atividade perdeu a importância na região.
Rancangan Bangun Sistem Informasi Berbasis Web Untuk Memantau Produksi dan Kegiatan Antar Divisi di Agro Pantes Tbk
Authors: Editor
Published: August 2019

Produksi merupakan fungsi pokok dalam setiap organisasi, yang mencakup aktivitas yang bertanggung jawab untuk menciptakan nilai tambah produk yang merupakan output dari setiap organisasi industri itu. Sistem saat ini belum terintegrasi dengan antar divisi lainnya, sehingga menjadikan pihak marketing lama untuk mengetahui proses produksi sudah sampai mana, dikarenakan lamanya untuk menyalin data-data produksi yang dilakukan di divisi utama produksi. Untuk mengatasi masalah tersebut, maka dibuatkan sebuah sistem informasi produksi berbasis web, sehingga dapat memberikan kemudahan bagi perusahaan dalam mengelola data produksi. Dalam penelitian ini menggunakan metode RAD dimana alur dan tahapan yang digunakan meliputi perencanaan syarat-syarat, perancangan sistem dan implementasi sistem. Dengan adanya sistem informasi produksi, maka segala kegiatan yang berhubungan dengan proses produksi akan mudah dalam mendapatkan suatu informasi berbagai data dan laporan yang diinginkan.
PENGARUH KONSUMSI JANTUNG PISANG TERHADAP PRODUKSI ASI PADA IBU NIFAS
Authors: Noviana Ulva
Published: August 2019

Exclusive breastfeeding production is the resultof breast stimulation by the prolactin hormoneproduced by the anterior pituitary gland. If the babysucks, the Exclusive breastfeeding will be removedfrom the lactiferous sinuses. The purpose of thisstudy is to analyze differences on Exclusivebreastfeeding production after consuming thebanana infloresence. The design used in this study is one grouppretest posttest design, independent variable isbanana infloresence and the dependent variable isthe production of exclusive breastfeeding. Population in study were all postpartum motherswho breastfeed on the first child (primi gravidarum)in Gertenga village POSKESDES Septian Eka KST,r.keb Karang penang subdistrict Sampang asmuch as 10, a sample of 10 respondents, takingsample technique uses simple random sampling.Data retrieval uses questionnaire sheet and a pairedSample test Rank statistical test with α (0.05). The results showed that all of them (100%)suffered from non-smooth breastfeeding preoductionbefore being given banana infloresence drink andafter being given banana infloresence drink almostall (80%) breast milk was smooth. Based on thestatistical test paired Sample test Rank test resultsobtained p value (0.002) <α (0.05) then Ha isaccepted and H0 is rejected which means that there is a difference in exclusive breastfeeding production after consuming the banana infloresence. Suggestionfor postpartum mothers who are breastfeeding whohave not smooth exclusive breastfeeding productionis to start getting used to consuming food or drinksthat can facilitate the production of breastfeeding,one of them is the banana infloresence drink
Parálisis periódica tirotóxica
Authors: Duarte Jorge Lundwig , Sanabria Alvaro
Published: August 2019

Presentamos el caso de un hombre de 39 años quien sufrió dos episodios de parálisis por hipocaliemia asociado a hipertiroidismo. Esta entidad inusual y considerada casi exclusiva de los países asiáticos también ha sido documentada en países occidentales; por tanto, damos a conocer este caso para ser tenido en cuenta entre los diagnósticos diferenciales en los servicios de urgencias
Calcifilaxis y enfermedad renal crónica
Authors: Pérez Jairo Enrique , Vargas Juan Guillermo , Echeverri Jorge Enrique , Rodríguez Paula Violeta , Pulido Jorge Armando
Published: August 2019

Es una vasculopatía caracterizada por calcificación de la capa media de los vasos y proliferación de la íntima de los mismos, asociado a fibrosis y trombosis luminal, llevando a necrosis de los tejidos circundantes, en especial de los tejidos blandos. La fisiopatología de la calcifilaxis está relacionada con múltiples factores, siendo una condición que lleva a la calcificación vascular acelerada y que se ha asociado a una serie de factores de riesgo como la enfermedad renal crónica en terapia de reemplazo y en trasplante renal. Se han relacionado otros factores no urémicos como son anormalidades en el metabolismo del calcio, hiperparatiroidismo primario, estados de hipercoagulabilidad como malignidad, déficit de proteína C y S, hepatopatía alcohólica, terapia con warfarina, hipoalbuminemia, terapias con calcio y vitamina D, obesidad y producto calcio/fósforo superior a 70. A continuación se reporta el caso de una paciente a quien se le documenta un cuadro clínico de calcifilaxis, describiendo la presentación clínica de esta patología, los factores de riesgo identificados y las complicaciones presentadas durante su atención
Homenaje al Dr. Roso Alfredo Cala Hederich
Authors: Otero Ruiz Efraim
Published: August 2019

*Discurso del Dr. Efraím Otero Ruiz en la inauguración del XXIII Congreso ACMI®- ACP “Roso Alfredo Cala Hederich”. Bucaramanga, agosto 11 de 2011
Tuning the performance of vanadium redox flow batteries by modifying the structural defects of the carbon felt electrode
Authors: Dixon Ditty , Babu Deepu Joseph , Bhaskar Aiswarya , Bruns Hans-Michael , Schneider Joerg J , Scheiba Frieder , Ehrenberg Helmut
Published: August 2019

Polyacrylonitrile (PAN)-based carbon felt was subjected to N2-plasma treatment to increase the heteroatom defects and reactive edge sites as a method to increase the performance in vanadium redox flow batteries (VRFBs). N-doping in the felt was mainly in the form of pyrrolic and pyridinic nitrogen. Even though the amount of oxygen functional groups on the N2-plasma-treated sample was very low, the felt showed enhanced electrochemical performance for both V3+/V2+ as well as V5+/V4+ redox reactions. The result is highly significant as the pristine electrode with the same amount of oxygen functional groups showed significantly less activity for the V3+/V2+ redox reaction. Overall, the single-flow cell experiments with N2-plasma-treated felt showed superior performance compared to the pristine sample. Therefore, the enhanced performance observed for the N2-plasma-treated sample should be attributed to the increase in defects and edge sites. Thus, from the present study, it can be concluded that an alternate way to increase the performance of the VRFBs is to introduce specific defects such as N-doping/substitution or to increase the edge sites. In other words, defects induced in the carbon felt such as heteroatom doping are as beneficial as the presence of oxygen functional groups for the improved performance of VRFBs. Therefore, for an optimum performance of VRFBs, defects such as N-substitution as well as oxygen functionality should be tuned.
Morphology-tunable and pH-responsive supramolecular self-assemblies based on AB2-type host–guest-conjugated amphiphilic molecules for controlled drug delivery
Authors: Bai Yang , Liu Cai-ping , Chen Di , Zhuo Long-hai , Bu Huai-tian , Tian Wei
Published: August 2019

Although stimuli-responsive supramolecular self-assemblies have been constructed, the controlled drug delivery induced by morphology transitions of these supramolecular self-assemblies on the basis of host–guest-conjugated monomers (HGCMs) are few reported. In this paper, the self-assembly behaviors of AB2-type HGCMs, e.g., β-cyclodextrin-benzimidazole2 (β-CD-BM2), were investigated at neutral and acidic pH conditions, respectively. Specifically, β-CD-BM2 first self-assembled into fan-shaped supramolecular self-assemblies with a hydrodynamic diameter of 163 nm at neutral pH, whereas they were further dissociated into spherical supramolecular self-assemblies with a size of 52 nm under acidic conditions. This morphology transition process was utilized to conduct a two-stage DOX delivery under neutral and acidic pH. Basic cell experiments demonstrated that the drug-loaded β-CD-BM2-based supramolecular self-assemblies with varied morphology could inhibit cancer cell proliferation, indicating their potential application in the field of drug delivery.
Archangelolide: A sesquiterpene lactone with immunobiological potential from Laserpitium archangelica
Authors: Rimpelová Silvie , Jurášek Michal , Peterková Lucie , Bejček Jiří , Spiwok Vojtěch , Majdl Miloš , Jirásko Michal , Buděšínský Miloš , Harmatha Juraj , Kmoníčková Eva , Drašar Pavel , Ruml Tomáš
Published: August 2019

Sesquiterpene lactones are secondary plant metabolites with sundry biological effects. In plants, they are synthesized, among others, for pesticidal and antimicrobial effects. Two such compounds, archangelolide and trilobolide of the guaianolide type, are structurally similar to the well-known and clinically tested lactone thapsigargin. While trilobolide has already been studied by us and others, there are only scarce reports on the biological activity of archangelolide. Here we present the preparation of its fluorescent derivative based on a dansyl moiety using azide–alkyne Huisgen cycloaddition having obtained the two sesquiterpene lactones from the seeds of Laserpitium archangelica Wulfen using supercritical CO2 extraction. We show that dansyl-archangelolide localizes in the endoplasmic reticulum of living cells similarly to trilobolide; localization in mitochondria was also detected. This led us to a more detailed study of the anticancer potential of archangelolide. Interestingly, we found that neither archangelolide nor its dansyl conjugate did exhibit cytotoxic effects in contrast to the structurally closely related counterparts trilobolide and thapsigargin. We explain this observation by a molecular dynamics simulation, in which, in contrast to trilobolide, archangelolide did not bind into the sarco/endoplasmic reticular calcium ATPase cavity utilized by thapsigargin. Last, but not least, archangelolide exhibited anti-inflammatory activity, which makes it promising compound for medicinal purposes.
A Very Large Array Survey of Luminous Extranuclear Star-forming Regions in Luminous Infrared Galaxies in GOALS
Authors: Linden S. T. , Song Y. , Evans A. S. , Murphy E. J. , Armus L. , Barcos-Muñoz L. , Larson K. , Díaz-Santos T. , Privon G. C. , Howell J. , Surace J. A. , Charmandaris V. , Vivian U. , Medling A. M. , Chu J. , Momjian E.
Published: August 2019

We present the first results of a high-resolution Karl G. Jansky Very Large Array imaging survey of luminous and ultra-luminous infrared galaxies (U/LIRGs) in the Great Observatories All-sky LIRG Survey. From the full sample of 68 galaxies, we have selected 25 luminous infrared galaxies (LIRGs) that show resolved extended emission at sufficient sensitivity to image individual regions of star formation activity beyond the nucleus. With wideband radio continuum observations, which sample the frequency range from 3 to 33 GHz, we have made extinction-free measurements of the luminosities and spectral indicies for a total of 48 individual star-forming regions identified as having deprojected galactocentric radii (r

G
) that lie outside the 13.2 μm core of the galaxy. The median 3–33 GHz spectral index and 33 GHz thermal fraction measured for these “extranuclear” regions is −0.51 ± 0.13 and 65% ± 11%, respectively. These values are consistent with measurements made on matched spatial scales in normal star-forming galaxies, and suggests that these regions are more heavily dominated by thermal free–free emission relative to the centers of local U/LIRGs. Further, we find that the median star formation rate derived for these regions is ∼1 M
⊙ yr−1, and when we place them on the sub-galactic star-forming main sequence of galaxies (SFMS), we find they are offset from their host galaxies’ globally averaged specific star formation rates. We conclude that while nuclear starburst activity drives LIRGs above the SFMS, extranuclear star formation still proceeds in a more extreme fashion relative to what is seen in local spiral galaxies.
Metrics and Motivations for Earth–Space VLBI: Time-resolving Sgr A* with the Event Horizon Telescope
Authors: Palumbo Daniel C. M. , Doeleman Sheperd S. , Johnson Michael D. , Bouman Katherine L. , Chael Andrew A.
Published: August 2019

Very-long-baseline interferometry (VLBI) at frequencies above 230 GHz with Earth-diameter baselines gives spatial resolution finer than the ∼50 μas “shadow” of the supermassive black hole at the Galactic Center, Sagittarius A* (Sgr A*). Imaging static and dynamical structure near the “shadow” provides a test of general relativity and may allow measurement of black hole parameters. However, traditional Earth-rotation synthesis is inapplicable for sources (such as Sgr A*) with intraday variability. Expansions of ground-based arrays to include space-VLBI stations may enable imaging capability on timescales comparable to the prograde innermost stable circular orbit (ISCO) of Sgr A*, which is predicted to be 4–30 minutes, depending on black hole spin. We examine the basic requirements for space VLBI, and we develop tools for simulating observations with orbiting stations. We also develop a metric to quantify the imaging capabilities of an array irrespective of detailed image morphology or reconstruction method. We validate this metric on example reconstructions of simulations of Sgr A* at 230 and 345 GHz, and use these results to motivate expanding the Event Horizon Telescope to include small dishes in Low Earth Orbit (LEO). We demonstrate that high-sensitivity sites such as the Atacama Large Millimeter/Submillimeter Array (ALMA) make it viable to add small orbiters to existing ground arrays, as space-ALMA baselines would have sensitivity comparable to ground-based non-ALMA baselines. We show that LEO-enhanced arrays sample half of the diffraction-limited Fourier plane of Sgr A* in less than 30 minutes, enabling reconstructions of near-horizon structure with a normalized root-mean-square error ≲0.3 on sub-ISCO timescales.
Cyanopolyyne Chemistry around Massive Young Stellar Objects
Authors: Taniguchi Kotomi , Herbst Eric , Caselli Paola , Paulive Alec , Maffucci Dominique M. , Saito Masao
Published: August 2019

Recent radio astronomical observations have revealed that HC5N, the second shortest cyanopolyyne (HC2n+1N), is abundant around some massive young stellar objects (MYSOs), which is not predicted by classical carbon-chain chemistry. For example, the observed HC5N abundance toward the G28.28−0.36 MYSO is higher than that in L1527, which is one of the warm carbon-chain chemistry sources, by more than one order of magnitude. In this paper, we present chemical simulations of hot-core models with a warm-up period using the astrochemical code Nautilus. We find that the cyanopolyynes are formed initially in the gas phase and accreted onto the bulk and surface of granular ice mantles during the lukewarm phase, which occurs at 25 < T < 100 K. In slow warm-up period models, the peak abundances occur as the cyanopolyynes desorb from dust grains after the temperature rises above 100 K. The lower limits of the abundances of HC5N, CH3CCH, and CH3OH observed in the G28.28−0.36 MYSO can be reproduced in our hot-core models, after their desorption from dust grains. Moreover, previous observations suggested chemical diversity in envelopes around different MYSOs. We discuss possible interpretations of relationships between stages of the star formation process and such chemical diversity, such as the different warm-up timescales. This timescale depends not only on the mass of central stars but also on the relationship between the size of warm regions and their infall velocity.
High-resolution Spectroscopic Imaging of Counter-streaming Motions in Solar Active Region Magnetic Loops
Authors: Yang Xu , Cao Wenda , Ji Haisheng , Hashim Parida , Shen Jinhua
Published: August 2019

We carried out high-resolution spectroscopic imaging in He i 10830 Å and H
α
for a set of active region (NOAA 12569) magnetic loops of different sizes (classified into short and long loops) with the Goode Solar Telescope at the Big Bear Solar Observatory on 2016 July 18. The long loops take the form of an chromospheric arch filament system, yet their extreme ultraviolet (EUV) counterparts are observed by the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory. Animations of blue- and red-wing images give counter-streaming motions; i.e., chromospheric absorption features in blue- and red-wing images move in opposite directions at different strands. The moving pattern is detected with the local correlation tracking method and confirmed by Doppler shifts. We speculate that, combined with the results of wavelet analysis that gives obvious 4 minute oscillation along trailing polarity, counter-streaming motions for short loops could be powered by p-mode leakage. However, for counter-streaming motions in long loops, we show that unidirectional mass flows in two opposite directions are accompanied with simultaneous weak EUV brightenings. Heating processes, probably by magnetic reconnection at footpoints, may have occurred. In addition, plasma flows along the magnetic loops, tracked with absorption features in He i 10830 Å, are found to be ejected from and drained out into inter-granule lane areas at different ends of the loop system.
Analysis of duet vocalizations in Myiothlypis leucoblephara (Aves, Parulidae)
Authors: Batistela Marciela , Müller Eliara Solange
Published: August 2019

Bird vocalizations might be used for specific recognition, territorial defense, and reproduction. Bioacoustic studies aim to understand the production, propagation and reception of acoustic signals, and they are an important component of research on animal behavior and evolution. In this study we analyzed the sound structure of duet vocalizations in pairs of Myiothlypis leucoblephara and evaluated whether the vocal variables differ among pairs and if there are differences in temporal characteristics and frequency of duets between pairs in forest edges vs. forest interior. Vocalizations were recorded from 17 bird pairs in three remnants of Atlantic Forest in southern Brazil. Six of the bird pairs were situated at the edge of the forest remnant, and 11 were in the interior of the remnant. The duets of different pairs between forest areas showed descriptive differences in the frequency, number of notes per call, and time between issuance of calls, with the main distinguishing feature being a change in frequency of a few notes in the second part of the musical phrase. The minimum frequency of vocalization was reduced at the private area than in the other two remnants (p <0.05). The duets of birds in the forest edge and forest interior did not significantly differ in minimum or maximum frequency of phrases (p> 0.05), phrase duration (p> 0.05) or number of notes per phrase (p> 0.05). Myiothlypis leucoblephara did not show a specific pattern with respect to issue of phrases in duets, but instead showed five different patterns, which were variable among pairs. There was a sharp decline or alternation in frequency between notes in the second part of the musical phrase for recognition among pairs. Variation in vocalization among M. leucoblephara duets may play a role in pair recognition.
Understanding Nail Gun Injuries in Orthopedics: Mechanisms and Treatment
Authors: Spanyer Jonathon M. , Lands Harrison M. , Kelly Sean C. , Page Paul S. , Yakkanti Madhusudhan R.
Published: August 2019

Nail gun injuries are common among users, and most frequently involve the hands and lower extremities. A wide variation in costs and time are missed from work due to these injuries, and training on the proper use of nail guns has been shown to decrease workplace-related injuries. Minimal long-term disability can be expected, and orthopedic evaluations provide an opportunity to inform patients on proper use of these devices. In this article, management of nail gun injuries is discussed, including the necessity for a high suspicion for wound contamination because foreign material is often deposited with the nail, as well as treatment with debridement and antibiotics. [
Orthopedics
. 2019; 42(5):e410–e414.]
Electromyographic Analysis of Grip
Authors: Fox Paige M. , Oliver Jeremie D. , Nguyen Viet , Hentz Vincent R. , Curtin Catherine M.
Published: August 2019

This prospective cohort study used video electromyography synchronized analysis to determine the dynamic use of extrinsic and intrinsic finger flexion during grasp. Light fist formation primarily involved the flexor digitorum profundus with either the flexor digitorum superficialis or intrinsics. In contrast, both the flexor digitorum superficialis and intrinsics were recruited in all tight fist video electromyography. However, the sequence of recruitment differed between patients in tight fist formation. Injured patients demonstrated a unique pattern of recruitment based on injury. The authors conclude that the flexor digitorum profundus is the workhorse in composite fist formation but the roles of the flexor digitorum superficialis and the intrinsic muscles are less consistent across patients. [
Orthopedics
. 2019; 42(6):e555–e558.]
Molecular characterization of the netrin-1 UNC-5 receptor in Lucilia sericata larvae
Authors: Karamzadeh Tahereh , Alipour Hamzeh , Shahriari-Namadi Marziae , Raz Abbasali , Azizi Kourosh , Bagheri Masoumeh , Moemenbellah-Fard Mohammad D.
Published: August 2019

Larval therapy with Lucilia sericata is a promising strategy in wound healing. Axon guidance molecules play vital roles during the development of the nervous system and also regulate the capacity of neuronal restoration in wound healing. Netrin-1, one of the proteins that larvae secrete, plays a useful role in cell migration and nerve tissue regeneration. The UNC-5 receptor combines with a netrin-1 signal and transmits the signal from one side of the membrane to the other side, initiating a change in cell activity. In the current study, we identified the full length of the UNC-5 receptor mRNA in L. sericata using different sets of primers, including exon junction and specific region primers. The coding sequence (CDS) of the UNC-5 receptor was sequenced and identified to include 633 base-pair nucleic acids, and BLAST analysis on its nucleotide sequence revealed 96% identity with the Lucilia cuprina netrin-1 UNC-5 receptor. The protein residue included 210 amino acids (aa) and coded for a protein with 24 kD weight. This gene lacked the signal peptide. Furthermore, the UPA domain is conserved in UNC-5. It lied at the interval of 26–131 aa. We identified the CDS of netrin-1 UNC-5 receptor in L. sericata. It could be applied to research activities implementing a new essential component design in wound healing.
Secure Framework for Internet of Things Based e-Health System
Authors: Bashir Adil , Mir Ajaz Hussain
Published: August 2019

Internet of Things (IoT) is the emerging technology finding applications in a wide range of fields that include smart homes, intelligent transportation, e-health, supply chain management. Among IoT applications, e-health is one of the most promising application in which smart devices capable of monitoring physiological parameters of patients are implanted in or around their bodies which automatically sense and transmit collected data to medical consultants. However, security issues for electronic patient records (EPR) in-transit hinder the usage of IoT in e-health systems. Among these issues, EPR confidentiality and entity authentication are major concerns. In this article, confidentiality of EPR and its secure transmission over network is focused mainly. A security framework is proposed where-in smart devices encrypt sensed physiological data with Light-Weight Encryption Algorithm and Advanced Encryption Standard cryptographic algorithms. The security framework and the designed protocol provides better security and are energy efficient as presented in the evaluation section.
A Discrete Wavelet Based Watermarking Scheme for Authentication of Medical Images
Authors: Giri Kaiser J. , Bashir Rumaan , Bhat Javaid Iqbal
Published: August 2019

The growth and emergence of telemedicine has resulted into considerable increase in the transfer of medical images between various health centers over computer networks for various purposes, such as diagnosis, clinical interpretation, and archives. The security of these images is a serious concern since these images can be manipulated during their transmission over the network. Moreover, as the authentication of the medical images is required for various legal purposes; the information security requirement specifications specified by various legislative rules must be adhered by the concerned stakeholders. In this research, a discrete wavelet-based watermarking scheme has been proposed for the authentication of medical images. The experimental results obtained have shown that the proposed scheme is a secure one and robust against various common image processing attacks.
Cloud Storage Privacy in Health Care Systems Based on IP and Geo-Location Validation Using K-Mean Clustering Technique
Authors: Rashid Mamoon , Singh Harjeet , Goyal Vishal
Published: August 2019

Cloud-based platforms are helping organizations like health care systems to improve conditions of patients and saving their lives. Medical professionals are making use of cloud technology to collect information regarding patients more than before and exchange it over different geographical regions. However, the exchange of patient data and information is taking place via complex systems with huge vulnerabilities and risks. In this article, the authors have outlined a model for preserving privacy in data storage used in health care systems by validating access to the data through IP based detection and geographical location-based security techniques. Later, the privacy is enabled by using k-mean clustering technique for validating the user access and avail subscriptions whenever consumer want to use the organization services. The authors also provide the concept of using constant key length encryption technique to secure data on cloud storage irrespective of the type of user.
A Comparative Cross-temporal Study on the Acceptance of Multiple Mobile Entertainment Services among Young Japanese Users
Authors: Ghyas Qazi Mahdia , Kondo Fumiyo N.
Published: August 2019

This study aims to understand how mobile usage in Japan access mobile entertainment services (MES) among young users. This article examined a cross-temporal analysis of behavioral intention factors by a combined technology acceptance model and the theory of planned behavior model (TAM-TPB). By using the factors of perceived value, perceived behavioral control, subjective norm and attitude, we analyzed two sets of data: (1) Japan in 2014; and (2) Japan in 2009. Results show that perceived value has an indirect effect on the intention to use via attitude for Japan in 2009, but perceived behavioural control was a significant predictor for behavioural intention to use MES in Japan 2014. That indicates that the usage behaviour of MES has differences across different time periods (Japan 2009 and Japan 2014). The results suggest that mobile companies need to strengthen their organizational and technical support systems and improve service quality and affordability to encourage young consumers to use MES.
The Study of Antecedents of Aesthetic Experience and Consumer Purchase Intention in Social Commerce
Authors: Choi Youngkeun
Published: August 2019

The focus of this study is how social commerce engages consumers and encourages them to purchase. By proposing the concepts of aesthetic experience as different ways to provide deep and meaningful consumer engagement, this study develops a model that explores the antecedents of aesthetic experience and its role in explaining a consumer to purchase in social commerce. For this, this study surveys 352 consumers using social commerce in Korea and analyzes the data using AMOS 24. In the results, first, enjoyment, facilitating conditions, and self-efficacy among the all of sub-factors of aesthetic experience increase consumers' aesthetic experience. Second, consumers' aesthetic experience increases their purchase intention. Finally, facilitating conditions and self-efficacy among the antecedents of aesthetic experience increase consumers' purchase intention through their aesthetic experience. The findings contribute to research on social commerce by paying scholarly attention to meaningful engagement characterized by aesthetic experience.
Assessing Interorganizational Crisis Management Capability
Authors: Granåsen Magdalena , Olsén Mari , Oskarsson Per-Anders , Hallberg Niklas
Published: August 2019

To strengthen the capability of societies to manage severe events, it is vital to understand what constitutes crisis management capability and how this can be assessed. The objective of this article is to explore how interorganizational crisis management capability has been assessed in the scientific literature. A systematic literature review was performed, resulting in a dataset of 83 publications. A thematic analysis resulted in nine themes of crisis management capability being identified, where interaction was the largest one. Analyses resulted in a comprehensive overview of assessment methods within the themes. The evaluation methods were mainly applied on real cases rather than exercises. The present article contributes with an increased understanding of how crisis management capability is evaluated, as well as applicability and limitations of different methodological approaches. This insight is essential in order to conduct a valid assessment of crisis management capability and design exercises that increase this capability.
Stakeholder Involvement in Outbreak Management
Authors: Kraaij-Dirkzwager Magdalena M. , Schol Lianne G. C. , Schuitmaker-Warnaar Tjerk Jan , Timen Aura , Van Steenbergen Jim E.
Published: August 2019

Infectious diseases remain a threat to public health, requiring the coordinated action of many stakeholders. Little has been written about stakeholder participation and approaches to sharing information, in dynamic contexts and under time pressure as is the case for infectious disease outbreaks. Communicable-disease specialists fear that delays in implementing control measures may occur if stakeholders are not included in the outbreak-management process. Two case studies described in this article show how the needs of stakeholders may vary with time and that early sharing of information takes priority over shared decision-making. The stakeholders itemized their needs and potential contributions in order to arrive at the collective interest of outbreak management. For this, the results suggest the potential for improvement through development of “network governance” including the effective sharing of information in large networks with varying needs. Outbreaks in which conflicting perceptions may occur among the stakeholders require particular attention.
A Cultural Approach to African Management Philosophy
Authors: Iguisi Osarumwense
Published: August 2019

Despite acknowledging the existence of indigenous management capabilities and skills in Africa, management practice in precolonial African societies was seen by the colonizers as primitive management. Africans have ways of exercising power and authority at the workplace, ways of motivating and rewarding people to make them work harder. Neither the institutions nor the political structures put in place by the colonizers acknowledge these indigenous knowledge structures, but much of them have survived in the traditions and cultural values of the African people. However, unlike in Europe and most parts of Asia, the attempted modernization or Westernization after independence has completely neglected the indigenous sociocultural knowledge and tried to transplant western management theories and models to traditional African societies. This article draws attention to the relevance of cultures to management philosophy with the purpose of contributing to a culturally appropriate practice of management in Africa. It has been shown that the different management theories in the form that they have been developed in the West reflect western philosophical thoughts which may not fit culturally in Africa management practice. However, in developing theories and building models of management theories in Africa, it is unlikely to pay Africans to throw away all that the West has to offer. Rather, the approach to appropriate management theorizing is to reflect on assumptions of Western management theories, compare Western assumptions about sociocultural values with African cultural values to rebuild the theories and models. The use of anthropological and philosophical concepts in this context will help in the development of appropriate management practice.
Information and Its Conceptual Perspectives
Authors: Rascão José
Published: August 2019

Information has attributes/positivist concepts that some authors use to better understand it. Others are critical about information subjectivism. This article discusses conceptual perspectives of information. The aim is to study the concepts of information from some areas of knowledge of the social sciences, cognitive and business looking to propose a concept of information in the field of information science. The methodology of the study is formed by bibliographical research. It is concluded that the concept of information is still in full development. The concept of information depends on the perception of information. Although this is not something that shocks, raises some interesting questions and research opportunities. For example, as we get the information.
Fatores de risco para a ocorrência das úlceras plantares decorrente da hanseníase de acordo com a árvore de decisão/ Risk factors for plantar ulcers from leprosy according to the decision tree
Authors: Chagas Izabel Cristina Sad das , Diniz Soraya Gonçalves , Lyon Sandra , Lyon Ana Claudia , Lana Francisco Carlos Félix
Published: August 2019

Objetivo: Identificar os fatores de risco para a ocorrência das úlceras plantares em pacientes com hanseníase. Métodos: Trata-se de um estudo epidemiológico, do tipo observacional, transversal e analítico. A população foi composta pelos casos de hanseníase notificados no período de 2005 a 2016. Para a análise univariada foram utilizados os testes Qui-quadrado de Pearson ou teste exato de Fisher e teste de Mann-Whitney, com significância estatística de 5% (p < 0,05). Na análise multivariada, foi elaborada árvore de decisão utilizando o algoritmo CHAID. Resultados: A forma clínica, grau de incapacidade física na alta, nervo acometido e o não uso de palmilhas ou calçado adaptado antes de surgir a úlcera são fatores de risco para a ocorrência de úlcera plantar. Conclusão: evidenciou a necessidade do diagnóstico precoce da hanseníase, como também da eficiente associação das intervenções medicamentosas e não medicamentosas por meio das técnicas de prevenção de incapacidade e uso de palmilhas acomodativas e/ou calçados especiais.
Vigotski desconhecido: a experiência de tradução literária do hebraico antigo
Authors: Sobkin Vladimir , Klimova Tatiana
Published: August 2019

No presente artigo, publicamos, pela primeira vez, uma tradução, até agora desconhecida, feita no início do século XX por L. S. Vigotski. Trata-se da tradução de um conto popular, escrito originalmente em hebraico antigo e de autoria do escritor judeu M. I. Berditchevski. Nos comentários que apresentamos, é reconstruído o contexto em que vivia L. S. Vigotski, no período pré-revolucionário. Atenção especial é dada à questão que estava diante dele sobre a autodeterminação nacional e cultural. São analisados os contextos culturais necessários para a compreensão e interpretação das peculiaridades artísticas e da visão de mundo contida no texto do conto. Faz-se uma comparação que mostra a ligação dos temas presentes no conto com problemas fundamentais dos quais se ocupará Vigotski, pouco tempo depois, como psicólogo profissional: a vivência artística, a escolha moral, a mediação cultural.Palavras-chave: Psicologia da Arte. Psicologia das Emoções. Vivência Estética.