bluuebunny/crossref_metadata_2025_split huggingface dataset:
A rare case of sinonasal actinomycosis – enigmatic presentation
Authors: Gupta Vikas , Dwivedi Gunjan , Sengupta P. , Tripathi Shailendra , Goyal Sunil , Kumar Manoj , Sood Amit 
Published: April 2018

Actinomycosis is most commonly seen in cervico-facial, abdominal, genital and thoracic regions as discharging sinuses. Most common organism implicated is <em>Actinomyces israelli, </em>gram positive anaerobic commensal bacteria of aero-digestive tract. Actinomycosis of paranasal sinuses is an extremely rare entity with isolated case reports and small case series published in literature. Among all sinuses maxillary sinus is most commonly afflicted by this disease. Pathogenesis involves inoculation of the bacteria into the tissues through breach in mucosa by trauma or surgical procedure. It requires anaerobic environment to grow into soft tissues and invade bone. It warrants treatment in form of surgical debridement and long term antibiotic therapy. Here, we present one such rare case of sinonasal actinomycosis in a 60 year old diabetic male who earlier had been treated as a case of sinonasal mucormycosis about one year back. This case was managed successfully with debridement encompassing infrastructure maxillectomy followed by a long course of Penicillin group of antibiotic. Preoperatively there was a diagnostic dilemma whether we were dealing with chronic invasive fungal sinusitis or actinomycosis. Actinomycosis was confirmed postoperatively on histopathology and microbiology. <p> </p>
Особливості розрахунку для процесів екстракції матеріального балансу трьохфазних сумішей
Authors: Glybin Vitaliy , Kuznetsova Olena 
Published: April 2018

Мета: Вдосконалення алгоритму розрахунку рівноваги рідина-рідина-пара для бінарних та трьохкомпонентних сумішей (для процесів екстракції). Методи: Аналіз фазових діаграм, моделювання відсікання частини рівноважної фази, алгебраїчні перетворення системи рівнянь задачі одноразового випаровування трьохфазної суміші заданого складу. Результати: Для двох типів фазових діаграм двокомпонентних сумішей з обмеженою розчинністю компонентів в рідкій фазі отримані обмеження на можливі значення молярних часток парової та двох рідких фаз за умов рівноваги рідина-рідина-пара для суміші заданого загального складу. Для трьохкомпонентних сумішей отримані аналітичні вирази для розрахунку складів трьох фаз за заданими двома наборами коефіцієнтів розподілу. Отримані формули для розрахунку молярних часток парової та двох рідких фаз за заданим загальним складом суміші. Наведені формули застосовані для розрахунку трьохфазної рівноваги суміші бутилен-н-бутан-вода на підставі законів Рауля та Генрі. Обговорення: Для трьохкомпонентних сумішей для орієнтовних розрахунків можна застосувати отримані формули як для визначення складів співіснуючих рівноважних фаз, так і для визначення молярних часток фаз. Для бінарних сумішей доцільно доповнити вхідну інформацію задачі одноразового випаровування суміші заданого складу припустимим значенням молярної частки парової фази.
Вплив біотину на ріст та розвиток бактерій Lactobacillus plantarum
Authors: Bondarchuk Natalia , Reshetniak Liudmila 
Published: April 2018

Мета: вивчити вплив біотину на життєдіяльність молочнокислих бактерій. Методи: об’єктом дослідження були молочнокислі бактерії Lactobacillus plantarum, які виділили з пробіотика «Флактонія». Для культивування бактерій використовували селективні поживні середовища: МРС та капустяне. Для стимуляції росту бактерій Lactobacillus plantarum в середовища додавали 5 мг/л біотину. Контролем були вище названі середовища без стимулятору росту. Дослідження включали вивчення динаміки накопичення бактерій Lactobacillus plantarum. Для цього протягом 60 годин проводили відбір проб: кожні 6 годин визначали біомасу, активну кислотність та кінетичні параметри росту культур: швидкість експоненціонального росту (μ, год–1), константа швидкості ділення (V, год–1), час генерації (g, год). Виділення молочнокислих мікроорганізмів проводили методом багатосерійних розведень. Посіви інкубували протягом 2-3 діб при температурі 37 0С. Кількість колоній підраховували по трьом останнім розведенням, в яких спостерігали ріст молочнокислих бактерій. рН визначали потенціометрично за допомогою мембранного рН-метра. Бактеріальну біомасу визначали нефелометричним методом. Оптичну густину суспензії вимірювали при 590 нм. Біомасу виражали в мг сухих клітин на мл середовища. Для розрахунку використовували калібрувальну криву залежності оптичної густини культуральної рідини від біомаси. Результати: у статті досліджено вплив стимулятора росту біотину (вітамін Н) на життєдіяльність, накопичення біомаси та параметри культивування молочнокислих бактерій Lactobacillus plantarum. Результати досліджень свідчать про те, що при внесенні біотину в капустяне середовище та середовище МРС збільшується константа швидкості ділення клітини та зменшується час генерації. В даних середовищах зі стимулятором росту кількість біомаси збільшилась в капустяному на 76% і в МРС на 50% порівняно з контролем. Кількість колонієутворюючих організмів (КУО) на капустяному середовищі, була на 42%, а на середовищі МРС на 28% вища ніж в контролі (без біотину).
Ultra Yüksek Performanslı Lifli Beton İçeren Kirişlerin Eğilme Davranışı
Authors: TÜRKER Kaan , BİROL Tamer , YAVAŞ Altuğ , HASGÜL Umut , YAZICI Halit 
Published: April 2018

Çalışmada, betonarme kirişlerde Ultra Yüksek Perfromanslı Lifli Beton (UYPLB)
kullanımının, kiriş sünekliği, taşıma kapasitesi, eğilme rijitliği, kırılma şekilleri
ve çatlak davranışı üzerindeki etkileri deneysel olarak incelenmiştir. Bunun için dikdörtgen enkesitli 150x250x2500mm
boyutlarında test kirişleri kullanılmıştır.
Beton içeriğinde düz mikro ve kancalı makro boyutta çelik lifler karma
olarak kullanılmış ve ortalama 161 MPa’lık basınç dayanımı elde edilmiştir. Düşük ve yüksek dört farklı çekme donatısı
oranına sahip lifli ve lifsiz toplam dokuz adet betonarme test kirişi üzerinde
dört noktalı eğilme testleri gerçekleştirilmiş ve salt eğilme davranışları incelenmiştir. Çalışmadan
elde edilen sonuçlar, kirişlerde UYPLB kullanımının incelenen parametreler
bakımından önemli avantajlar sağladığını göstermiştir.
Nermi Uygur’un Yaşam Temelli Felsefe Anlayışı
Authors: KAHRAMAN Yakup 
Published: April 2018

Modern Türk düşüncesini iki döneme ayırır isek bu
dönemlerden ilki pozitivist paradigmanın hâkim olduğu cumhuriyetin ilk elli
yılıdır. Bu dönemde yapılan felsefi çalışmalar genellikle doğa bilimsel yönteme
göre şekillenmiştir. Ayrıca Aydınlanmacı yaklaşımın da popüler olduğu
söylenebilir. Bu dönemde verimli eserler meydana getirmiş olan Nermi Uygur ise
özellikle Husserl’in fenomenoloji temelli felsefi yaklaşımını benimseyerek
farklı bir çığır açmıştır. Uygur’un bu dönemde yaşam temelli bir anlayış ortaya
koyması ve her bir yaşam perspektifini felsefi açıdan değerli bulması dikkate
değerdir. Bu çalışmada Uygur’un fenomenoloji temelli felsefe yaklaşımının
otantik, diyalojik nitelikleri ortaya konulmaya çalışılmıştır. Böylece düşünce
geleneğimizde aydınlanmacı, pozitivist paradigmanın yanı sıra farklı seslerin
olduğu gösterilmiştir.
Theory-Informed Research Training and Mentoring of Underrepresented Early-Career Faculty at Teaching-Intensive Institutions: The Obesity Health Disparities PRIDE Program
Authors: Beech Bettina M. , Bruce Marino A. , Thorpe, Jr Roland J. , Heitman Elizabeth , Griffith Derek M. , Norris Keith C. 
Published: April 2018

<p>Mentoring has been consistently identi­fied as an important element for career advancement in many biomedical and health professional disciplines and has been found to be critical for success and promotion in academic settings. Early-career faculty from groups underrepresented in biomedical research, however, are less likely to have mentors, and in general, receive less mentoring than their majority-group peers, particularly among those employed in teaching-intensive institutions. This article describes Obesity Health Disparities (OHD) PRIDE, a theoretically and concep­tually based research training and men­toring program designed for early-career faculty who trained or are employed at Historically Black Colleges and Universities (HBCUs). <em></em></p><p><em>Ethn Dis. </em>2018;28(2):115-122; doi:10.18865/ed.28.2.115. </p>
How Incarceration Influences Native-Born Black Men’s Risk of Obesity
Authors: Brown Tony N. , Culver Julian , Bento Asia 
Published: April 2018

<p> <strong>Objective: </strong>To build upon research that inves­tigates the health significance of familial and former incarceration with special emphasis on obesity risk among native-born Black (ie, African American) men.</p><p><strong>Methods: </strong>We analyzed data from the 2001-2003 National Survey of American Life (NSAL), focusing on native-born Black men (n=1140), the demographic group that bears the brunt of mass incarceration. The out­come of interest was obesity as measured by body mass index (BMI)&gt;30. Principal predic­tors were familial and former incarceration, and their statistical interaction.</p><p><strong>Results: </strong>In survey-adjusted binomial logistic regression models, familial incarceration ap­peared an unimportant predictor; whereas, former incarceration associated with a lower risk of obesity. However, former incarceration modifies the association between familial incarceration and obesity, such that native-born Black men experiencing both familial and former incarceration were significantly more likely to be obese.</p><p><strong>Conclusions: </strong>Public health researchers should treat former incarceration with greater care in studies including native-born Black men because time spent incarcerated has lingering physical health significance.</p><p><em>Ethn Dis. </em>2018;28(2):69-74; doi:10.18865/ ed.28.2.69.</p>
Sınav Stresi Ölçeğinin Türkçeye Uyarlanması ve Ölçme Değişmezliğinin İncelenmesi
Authors: KARADUMAN Büşra , KİLMEN Sevilay 
Published: April 2018

Bu araştırma kapsamında Sung ve Chao
(2015) tarafından geliştirilmiş olan Sınav Stresi Ölçeğinin (SSÖ) Türk
kültürüne uyarlaması yapılarak geçerlik ve güvenirlik çalışmaları yapılmakta ve
sınav stresine yönelik bir model test edilmektedir. Araştırmanın çalışma
grubunu 2016-2017 eğitim-öğretim döneminde Balıkesir ilinde bulunan fen lisesi,
anadolu lisesi, mesleki ve teknik anadolu lisesi ve sosyal bilimler
liselerinin 9., 10., 11. ve 12.
sınıflarında öğrenim görmekte olan toplam 1617 öğrenci oluşturmaktadır. İlk
aşamada doğrulayıcı faktör analizi ile ölçeğin üç faktörlü yapısının doğrulandığı
sonucuna ulaşılmıştır. Araştırmanın ikinci aşamasında ise doğrulanan sınav
stresi modelinin cinsiyet, okul türü ve sınıf düzeyi alt gruplarında ölçme
değişmezliği incelenmiştir. Sınav stresi
modelinin cinsiyet, okul türü ve sınıf düzeyi alt gruplarında tüm değişmezlik
aşamalarını sağladığı görülmüştür. Bu durum SSÖ’nün cinsiyet, okul türü ve
sınıf düzeyi alt gruplarında farklı düzeylerde geçerli ve güvenilir ölçümler
sağladığına işaret etmektedir.
Predicting Physical and Chemical Properties of US Soils with a Mid‐Infrared Reflectance Spectral Library
Authors: Wijewardane Nuwan K. , Ge Yufeng , Wills Skye , Libohova Zamir 
Published: April 2018

Core Ideas
A mid‐infrared spectral library containing 20,000+ samples was reported.
Twelve soil physical and chemical properties were predicted with MIR spectra.
ANN models performed better than PLSR for most soil properties.
Horizon and taxonomic order as auxiliary variables improved prediction for PLSR.
MIR library has the potential as an alternative to laboratory‐based analysis for OC and IC.
Mid‐infrared (MIR) reflectance spectroscopy is commonly studied as a rapid and nondestructive method for predictive soil analysis under laboratory conditions. The first objective of this paper is to report an MIR spectral library based on 20,000+ soil samples collected from the United States. The second objective is to assess, using partial least squares regression (PLSR) and artificial neural networks (ANN), the performance of the library to predict 12 physical and chemical soil properties: organic carbon (OC), inorganic carbon (IC), total carbon (TC), total nitrogen (TN), clay, silt, sand, Mehlich‐3 extractable phosphorus (P), NH4OAc extractable potassium (K), cation exchange capacity (CEC), total sulfur (TS), and pH. The third objective is to investigate whether the use of auxiliary variables of master horizon (HZ), taxonomic order (TAXON), and land use land cover (LULC) would improve MIR model performance. The results showed that OC, IC, TC, TN and TS were predicted most satisfactorily with R2 > 0.95 and RPD (ratio of performance to deviation) > 5.5. Soil CEC, pH, clay, silt, and sand were also predicted satisfactorily with R2 > 0.75 and RPD > 2.0. P and K were predicted poorly, with R2 < 0.4 and RPD < 1.4. The ANN models generally outperformed PLSR models, except for clay, silt and sand. Using auxiliary variables (HZ, TAXON, and LULC) to develop stratified models generally improved model performance. The HZ‐specific models showed the greatest improvements. Using an MIR spectral library for routine soil analysis would positively impact many modern applications where high spatial resolution, quantitative soil data are demanded.
Tree-ring based annual precipitation reconstruction for the southern Three-River Headwaters region, China
Authors: Xiao Dingmu , Huang Xiaomei , Qin Ningsheng 
Published: April 2018

Abstract
Tree-ring width standard chronologies were created from Juniperus przewalskii Kom data collected in the southern Three-River Headwaters (TRH) region. Statistical analysis results showed high correlation between the first primary component (PC1) of the four chronologies and instrumental precipitation records during the annual September–August interval. Precipitation of the region was reconstructed for the past 461 years. It was verified that the reconstruction model was stable by split-sample calibration-verification statistics. The reconstruction series revealed 22 extremely dry years and 9 extremely wet years. Results showed relatively dry periods occurred during 1567–1597, 1604–1614, 1641–1656, 1684–1700, 1734–1755, 1817–1830, 1913–1932, 1953–1971, 1990–2005. Relatively wet periods occurred during 1615–1630, 1657–1683, 1701–1733, 1756–1786, 1798–1816, 1844–1855, 1864–1875, 1885–1912, 1933–1952, 1977–1989. Comparison with tree-ring based precipitation reconstructions, and chronologies from surrounding areas provided a high degree of confidence in our reconstruction, and correlated well with the Monsoon Asia Drought Atlas (MADA) dataset in the public section of corresponding grids. The empirical mode decomposition analysis suggests the existence of significant periods with intervals of 2–5, 6–10, 11–18, and 28–60 years. This research contributes to a better understanding of historical variations in precipitation and will aid in future plans to address climate change of the TRH region.
One-step Solvothermal Synthesis of rGO/TiO2 Nanocomposite for Efficient Solar Photocatalytic Degradation of Methylene Blue Dye
Authors: Siong Valerie Ling Er , Lai Chin Wei , Juan Joon Ching , Lee Kian Mun , Leo Bey Fen , Khe Cheng Seong 
Published: April 2018

Background:
The discharge of effluents from the textile and dyeing industries has been a
worldwide concern. Although reduced graphene oxide/titanium dioxide (rGO/TiO2) nanocomposite
is a potential candidate for wastewater treatment, the influence of graphene oxide (GO) content on its
physico-chemical characteristics and its subsequent photocatalytic capabilities in degrading the organic
contaminants has not been well established.

Objective:

The primary objective of this study was to assess the use of rGO/TiO2 nanocomposites
with various GO contents for the removal of toxic methylene blue (MB) dye from aqueous solution.

Method:

In the present study, rGO/TiO2 nanocomposites were fabricated using various GO contents
through a one-step solvothermal method. The effect of GO content on the nanocomposite formation
was investigated by using field emission scanning electron microscopy (FESEM), transmission electron
microscopy (TEM), X-ray diffraction (XRD) and Raman spectroscopy. The resulting nanocomposites
were evaluated against MB degradation under artificial solar light illumination.

Results:

Based on the photocatalytic results, the highest removal percentage of MB was achieved by
0.15rGO/TiO2, which was about 1.7 times higher than that of 0.01rGO/TiO2.

Conclusion:

The enhanced removal efficiency of MB by the nanocomposite with the highest GO
content (0.15 g) was attributed to the increased active adsorption sites, which greatly promoted the π-
π interaction between the aromatic rings of MB dye and the graphitic skeleton of rGO, as well as the
electrostatic interaction between the cationic center of MB molecules and the residual oxygen functionalities
of rGO.
The Prevalence of Melanocytic Naevi at the University of Benin Teaching Hospital
Authors: E Imasogie D , A Azeke T 
Published: April 2018

Introduction:
Melanocytic naevi are benign melanocytic tumours. Some of them may progress to malignant melanoma that has an enormous and ever increasing clinical and economical importance with a high mortality rate. Despite this association, we noticed a dearth of data of benign melanocytic tumoursin Nigeria. This aim of this study is to determine the prevalence, age and sex distribution of benign melanocytic tumours in the University of Benin Teaching Hospital,(UBTH).
Methodology:
This was a retrospective study which was carried out over a ten-year period in UBTH between January 2004 and December 2013. All cases of benign melanocytic tumoursdiagnosed histologically during the period under review were collated. Histology slides were retrieved, reviewed and the diagnosis recorded against the corresponding patient’s name on a data spread sheet. The data obtained from this study was analysed using the Statistical Package for Social Sciences, version 16 (SPSS 16, SPSSInc. Chicago, Illinois, United States of America.
Result: There were 17 cases of melanocytic naevi seen over the study period giving a prevalence of 4.5% of skin tumours. The mean age for the development of melanocytic naeviin this study was 32.71 years (SD = 22.64) and a peak in the 2nd decade. A female preponderance with a bimodal peak age, in the 2nd and 3rd decades was observed.
Conclusion: There is a low prevalence rate of melanocytic naevi in our own environment, unlike in the Caucasians of Australian nationality. The differential exposure to high level of UV radiationis key to this observation.
RETENTION OF CAROTENE AND RETINYL PALMITATE IN PALM COOKING OIL AND THE PRODUCTS FRIED IN THE OIL
Authors: Hasibuan Hasrul Abdi 
Published: April 2018

Fortification of vitamin A in the cooking oil needs to be revisited given that the used oil is palm oil and fortificant form of vitamin A or retinol palmitate have to be imported. On the other hand, palm oil contains carotene as pro-vitamin A and potentially as an alternative of fortificant. The aim of this study was to compare the retention of carotene to retinol palmitate in palm cooking oil and the products fried in the oil using deep frying at 150°C. Materials used as fried products were potatoes, tofu and chicken. The quality of cooking oil that determined were the fatty acid composition, water content, free fatty acid, peroxide value, color, retention of carotene and retinol palmitate. While the quality of the products fried in the oil that determined were water, fat, carotene and retinol palmitate content. The results of this study showed that fortificant (carotene and retinol palmitate) no significant difference to the quality of cooking oil except color, retention of carotene and retinol palmitate. Fortificants also showed no significant difference to the quality of fried products. Retention of carotene showed significantly decreased with increasing frying repeatedly, but had a higher retention and significantly different than retinol palmitate. Retention of carotene in the frying pan first, second, third, fourth and fifth were in the range of 86-89%, 83-89%, 80-83%, 77-80% and 77-80%, while retinol palmitate were 68-100%, 58-97%, 51-89%, 50-84%, and 40-75%. Thus, carotene can be used as an alternative of fortificant in the palm cooking oil.
Trabalhando com os erros de alunos de Cálculo Diferencial e Integral em Fóruns do Ambiente MOODLE
Authors: Jacintho Müller Thaísa , Valdeni de Lima José , Noronha Cury Helena 
Published: April 2018

Neste trabalho, é apresentado um recorte de uma pesquisa de doutorado cujoobjetivo é analisar dificuldades de aprendizagem apresentadas por alunos de Cálculo Diferencial e Integral e testar possibilidades de superar tais dificuldades por meio de recursos tecnológicos. Em meio às estratégias desenvolvidas, encontra-se a discussão em fóruns, no ambiente MOODLE, a partir de tópicos detectados como problemáticos nos conhecimentos prévios necessários para o acompanhamento da disciplina. Com base na teoria do Três Mundos da Matemática, de David Tall, apresenta-se aqui a discussão do fórum relacionado a resolução de inequações, cuja análise demonstrou a dificuldade dos alunos em sair do mundo corporificado e entrar nos mundos operacional simbólico e formal axiomático.
FÁBRICA DE MATEMÁTICAS: UMA ESCOLA EXPANDIDA POR MEIO DA TECNOLOGIA DIGITAL E DA COOPERAÇÃO
Authors: Aliatti Camila 
Published: April 2018

O presente trabalho se configura em um estudo piloto para uma pesquisa demestrado que busca abordar o conceito de cooperação na sala de aula de forma aplicada a tecnologia colaborativa por meio de um estudo de caso desenvolvido na área da Matemática com as Tecnologias Digitais da Informação e Comunicação. A pesquisa se baseia no conceito de cooperação oriundo da perspectiva da Epistemologia Genética de Piaget e da teoria de Escola Expandida de Battro, e apresenta como sujeitos estudantes de Ensino Fundamental que possuem acesso aos suportes tecnológicos como internet e computadores em suas casas. De forma cooperativa, os estudantes criaram seus próprios sites a fim de utilizarem a web como ferramenta de colaboração para o estudo de matemática. Em seus sites, puderam desenvolver atividades propostas pela professorapesquisadora. Os resultados do trabalho apontam para vantagens da cooperação no ambiente de sala de aula e também fora dela, além da tomada de consciência pelos estudantes de que as tecnologias podem colaborar para o seu aprendizado e de outrem.
SAMAR: Um Sistema Autônomo de Mensuração de Autorrelatos no auxílio à Formação de Grupos para o campo CSCL
Authors: Costa Quarto Cícero , De Souza Vieira Lucas , Bercht Magda , Cerentini Pacico Juliana , Simon Hutz Cláudio 
Published: April 2018

Este artigo aborda a formação de grupos baseada no perfil de autorrelato doindivíduo, de forma a tornar a Aprendizagem Colaborativa Apoiada por Computador mais eficiente e assim auxiliar o professor na sua ação didática. O aporte teórico da pesquisa é alicerçado na Psicologia Positiva e na Computação. Da Computação, apresenta-se a ferramenta SAMAR, um sistema autônomo de mensuração de autorrelatos, implementado em PHP e integrado ao MySQL. Descreve-se um experimento no Ambiente Virtual de Aprendizagem MOODLE, através do qual se busca estudar a aplicação das variáveis de autorrelatos consideradas. Como principais resultados da pesquisa se destaca que os melhores desempenhos de grupos colaborativos foram alcançados naqueles grupos com perfis de autorrelatos de médio para alto e com formações de grupos heterogêneos.