bluuebunny/crossref_metadata_2025_split huggingface dataset:
Diagenesis and rock properties of sandstones from the Stormberg Group, Karoo Supergroup in the Eastern Cape Province of South Africa
Authors: Chima Priscilla , Baiyegunhi Christopher , Liu Kuiwu , Gwavava Oswald 
Published: December 2018

Abstract
Diagenesis is one of the factors that affect reservoir quality in sandstones. Knowledge of diagenetic transformation and how it impacts the development of porosity in reservoirs rocks is thus key to successful mineral exploration. To date, little is known about the diagenesis of the uranium-hosted sandstones of the Stormberg Group, Karoo Basin, South Africa. Petrographic study, scanning electron microscopy (SEM) aided with energy dispersive X-ray (EDX), and X-ray diffraction (XRD) analyses were employed for the diagenetic study of the sandstones. This study aims to provide an account of the diagenesis of these rock units and how it impacts their reservoir quality. The diagenetic processes that have affected the sandstones are cementation, compaction, recrystallization, replacement, mineral overgrowth and dissolution. These processes have passed through early, late and uplift-related diagenesis. Formation of authigenic minerals and precipitation of the mineral cements occurred during different diagenetic phase but mostly during the early diagenetic stage. This stage was followed by lithification, which resulted in increased in grain packing, loss of pore spaces and thinning of bedding. Quartz and feldspar overgrowths, chloritization, muscovitization, concave-convex contacts, recrystallization, albitization and suture contacts are present in the late diagenetic stage. The uplift-related diagenetic stage was affected by calcitization, grain deformation and fracturing, dissolution and saussuritization. All these diagenetic processes largely affected the porosity and permeability of the sandstones. Primary and secondary porosities were both observed in the sandstones. In general, there is no single diagenetic process that is controlling the pattern of porosity evolution in the sandstones. On the other hand, the presence of fractured and dissolution pores tend to increase the porosity, thus enhancing the reservoir quality. This study shows that diagenesis has significantly altered the original petrologic characteristics of the sandstones which have induced considerable deterioration and heterogeneity in the reservoir quality of the Stormberg Group sandstones in the Main Karoo Basin of South Africa.
A self-cleaning surface based on heat treatment of g-C3N4-coated wood prepared by a rapid and eco-friendly method
Authors: Dong Yue , Ji Xiaodi , Li Fenglong , Nguyen Tat Thang , Huang Zhanhua , Guo Minghui 
Published: December 2018

Abstract
A self-cleaning surface treatment has been developed, which is prepared by an eco-friendly and effective two-step method. First, graphitic carbon nitride (g-C3N4) was deposited on the wood surface by vacuum impregnation, followed by heat treatment. The morphology, weight change, dimensional stability, crystal and micro structure, and elemental composition of the wood samples were determined by photography, weighting, swelling rate determination, X-ray diffraction (XRD) and scanning electron microscopy and energy dispersive X-ray analysis (SEM-EDXA). Moreover, contact angle measurements and photocatalytic degradation experiments were carried out with Rhodamine B as the target. It was demonstrated that g-C3N4 is successfully deposited on the wood surface, which lowers the heat treatment temperature and renders photocatalytic properties to the coating. The heat treatment at around 210°C strengthened the immobility of g-C3N4 and increased the surface hydrophobicity. Moreover, the better photocatalytic ability of the surface is accompanied with self-cleaning effects.
Postbuckling behavior of functionally graded CNT-reinforced nanocomposite plate with interphase effect
Authors: Srivastava Ashish Kumar , Kumar Dinesh 
Published: December 2018

Abstract
The present paper is aimed to study the buckling and postbuckling response of functionally graded carbon nanotube (FG-CNT)- magnesium (Mg) nanocomposite plate with interphase effect. Interphase zone is characterized by employing a cohesive zone model for its elastic modulus and thickness. An equivalent solid fiber (ESF) of CNT and interphase is modeled and dispersed into the matrix material by utilizing random sequential adsorption (RSA) technique. The effective elastic properties of the nanocomposite are computed by finite element method (FEM) based numerical homogenization technique. The obtained elastic properties of nanocomposite are utilized to investigate the buckling and post-buckling behaviour of different functionally graded (i.e., FG) nanocomposite plates modeled by varying the volume fraction of CNT/ESF along thickness direction, under in-plane compressive loads. The non-linear formulation is based on first-order shear deformation theory and von Karman’s assumptions. It is found that considering the interphase between CNT and Mg matrix would result in decrease in buckling load and postbuckling strength of FG-CNT-reinforced nanocomposite plate as compared to nanocomposite without interphase. It is also reported that the higher volume fraction of CNTs near top and bottom surfaces than the middle portion of nanocomposite plate provide better resistance to buckling and postbuckling.
False discovery control for penalized variable selections with high-dimensional covariates
Authors: He Kevin , Zhou Xiang , Jiang Hui , Wen Xiaoquan , Li Yi 
Published: December 2018

Abstract
Modern bio-technologies have produced a vast amount of high-throughput data with the number of predictors much exceeding the sample size. Penalized variable selection has emerged as a powerful and efficient dimension reduction tool. However, control of false discoveries (i.e. inclusion of irrelevant variables) for penalized high-dimensional variable selection presents serious challenges. To effectively control the fraction of false discoveries for penalized variable selections, we propose a false discovery controlling procedure. The proposed method is general and flexible, and can work with a broad class of variable selection algorithms, not only for linear regressions, but also for generalized linear models and survival analysis.
Kritikkonstellationen
Authors: Lorenz Stephan 
Published: December 2018

ZusammenfassungIn der Debatte um Möglichkeiten von kritischen Gesellschaftsanalysen, namentlich von einer Soziologie der Kritik, die sich von kritischer Soziologie abgrenzt, fehlen methodologische und methodische Reflexionen. Solche zeigen, dass weder theoretische Kritikperspektiven einfach angewendet noch kritische Maßstäbe empirisch bloß aufgelesen werden können. Im ersten, konzeptuellen Teil des Beitrags werden der falschen Konfrontation eine prozedurale Perspektive entgegengesetzt, das Verhältnis von Nähe und Distanz zwischen der Soziologie und den von ihr erforschten Akteuren genauer untersucht sowie unterschiedliche Typen von Kritik benannt. Im zweiten Teil wird an empirischen Beispielen demonstriert, wie Soziolog/innen bei ihren Fallrekonstruktionen eine Position als Kritiker/innen einnehmen. Dabei werden sowohl Kritiken der Akteure aufgegriffen als auch deren Positionierungen kritisch analysiert – und beides wird als fallbezogen miteinander verwobene Kritikkonstellationen reflektiert. Resümiert wird, inwiefern sich kritische Analysen letztlich auf soziologische Verfahrensweisen stützen können müssen.
Warten und Warten-Lassen
Authors: Göttlich Andreas 
Published: December 2018

Zusammenfassung
Der vorliegende Text betrachtet eine aus dem Alltag wohlvertraute Form sozialer Beziehung: wenn eine Person auf eine andere wartet bzw. eine andere Person auf sich warten lässt. Besondere Berücksichtigung wird hierbei dem Machtaspekt zuteil, denn jemanden warten zu lassen, bedeutet, dem Gegenüber ein Zeitregime aufzuerlegen. Die Untersuchung der Wartebeziehung erlaubt insofern Einblicke in die Grundmechanismen sozialer Auferlegung und damit der Ausübung von Macht.
Die „richtige“ Nähe und Distanz zum eigenen Kind
Authors: Sieben Anna , Pauge Matthias , Ruppel Paul Sebastian 
Published: December 2018

Zusammenfassung
Dieser Artikel rekonstruiert die Positionierungen einer Mutter hinsichtlich der Frage, wie und von wem sie ihren Sohn betreuen lässt. Im problemzentrierten Interview kreisen ihre Überlegungen um die Frage, ob sie ihren Sohn zu häufig abgibt. Im Gespräch mit der Interviewerin werden verschiedene Normen „guter“ Mutterschaft thematisiert. Insgesamt lässt sich an diesem Einzelfall zeigen, dass es in der aktuellen Kultur ‚guter Elternschaft‘ – bisweilen als intensive parenting bezeichnet – schwer ist, die eigenen Bedürfnisse sowie die wahrgenommenen Bedürfnisse des Kindes in Einklang zu bringen. Die Ergebnisse der Einzelfallanalyse beruhen auf einer innovativen Kombination von Auswertungsmethoden: Die Resultate, die sich einer Anwendung der dokumentarischen Methode als Einzelinterpretation verdanken, werden zu Deutungen in Beziehung gesetzt, die auf zwei tiefenhermeneutisch orientierten Gruppeninterpretationen basieren. Diese ungewöhnliche Methodenkombination erweist sich als produktiv. Sie gestattet es, die Komplexität der Positionierungen der Mutter sowie die ‚Vielstimmigkeit‘ im Feld der Mutterschaft zu erfassen.
Self-Selected Motivational Music on the Performance and Perceived Exertion of Runners
Authors: Clark Jamie C. , Baghurst Timothy , Redus Brady S. 
Published: December 2018

Abstract
Clark, JC, Baghurst, T, and Redus, BS. Self-selected motivational music on the performance and perceived exertion of runners. J Strength Cond Res 35(6): 1656–1661, 2021—Music is used by athletes and exercisers to improve performance outcomes, but it is less known whether its properties can enhance performance at maximal intensity. This study measured subjects' performance time, average heart rate, and rating of perceived exertion (RPE) on a 1.5-mile running trial when listening to self-selected motivational music vs. no music. Subjects were 17 runners (male = 8, female = 9) who completed 2, 1.5-mile time trials in a repeated-measures randomized crossover design. For the music trial, subjects were asked to select and listen to a motivational song, which was scored by the subject for its motivational quotient using the Brunel Music Rating Inventory-2. Subjects improved mean performance time by 10 seconds and increased average heart rate by 4.5 b·min–1 in the motivational music condition, but neither were significantly different (p = 0.09, 0.10). However, the music condition significantly lowered subjects' RPE by 0.5 points (p = 0.02). That motivational music improved performance time, although not significant, is noteworthy considering the significantly lower RPE reported. Therefore, ergogenic qualities of motivational music may elicit a greater performance from experienced runners while simultaneously lowering perception of effort when working at maximal intensity.
The Crisis of Madrasa Graduates: A Search for Identity in the Pakistani Society
Authors: BIN MASOOD Farid , KHAN Umair Ali 
Published: December 2018

Madrasah had remained the traditional institution of education in the Muslim history and remained functional in the pre-British era in the sub-continent. Historically, there had been no distinction between the religious and secular education in the madrasahs, but after the arrivalof British imperialism which led to the subjugation and oppression of existing institutions which also affectedthe Madrasah curriculum leading to a gradualdecay in Madrasah to play any role in the society. This existential crisis faced by the madrasah—both as an institution and by its graduates—was expected to end with the inception of Pakistan with the support of religious Ulema and the Muslim masses however the adaptation of the modern education system in Pakistan only added more to the existing problem. The current research employed a survey method to explore the professions graduates from madrasahs are adapting in order to play a contributing role for the welfare of the state and society. Results are indicative that a large number of graduates are forced to take up petty professions whose pay is even less than the minimum wage criteria set by the state of Pakistan and the world bank. Analysis of the data indicated that these professions include: madrasah teachers, imams, clerks at madrasahs, writers in low-rated newspapers, small shopkeepers. A large number of graduates join voluntary missionary organizations and religious political parties. Research also showsthat few of the graduates indulge in militant organizations.
Função produção da cultura da cebolinha verde (Allium fistulosum, L): níveis de água e adubo orgânico no Agreste Alagoano
Authors: Silva Cinara Bernardo da , Silva Julianna Catonio da , Santos Daniella Pereira dos , Santos Márcio Aurélio Lins dos 
Published: December 2018

Objetivou-se avaliar o crescimento da cebolinha verde (Allium fistulosum, L) em função de lâminas de água e níveis de adubos orgânicos no Agreste Alagoano. O experimento foi conduzido na área experimental do Campus Arapiraca da Universidade Federal de Alagoas. O delineamento experimental foi em blocos casualizados com parcelas subdivididas e 3 repetições. Nas parcelas, foram testados níveis de irrigação (W1 = 50, W2 = 100 e W3 = 150%), da evapotranspiração da cultura (ETc). Nas subparcelas, foi avaliada a resposta da cultura a quatro doses de esterco bovino (A1 = 0, A2 = 50, A3 = 100 e A4 = 150%), calculados a partir da dose recomendada para a cultura (5 Kg m-2). Foram analisadas as variáveis: altura de planta (AP), número de folhas (NF), matéria fresca da raiz (MFR), matéria seca da raiz (MSR), matéria fresca da parte aérea (MFPA) e matéria seca da parte aérea (MSPA). Foi utilizado o teste “F” mostrando que não houve interação entre os tratamentos testados, e o teste de Tukey a 5% de probabilidade ocorrendo efeito significativo para as lâminas de água sobre NF, MFPA, MSPA, MFR e MSR. Foi utilizado o teste “F” mostrando que não houve interação entre os tratamentos testados, e o teste de Tukey a 5% de probabilidade ocorrendo efeito significativo para as lâminas de água sobre NF, MFPA, MSPA, MFR, MSR e DC. As lâminas de 100 e 150% proporcionaram um melhor crescimento da cultura da cebolinha.
Daily variability of arterial stiffness of patients with arterial hypertension depending on the category of cardiovascular risk
Authors: Tarlovskaya E. I. , Merezhanova A. A. 
Published: December 2018

Purpose. The study of the daily variability of arterial stiffness indicators, depending on the category of cardiovascular risk. Materials and methods. The study consistently included patients with essential hypertension who were admitted to the cardiology department of the Volga district medical center from November 1, 2015 to October 1, 2017. The study involved 134 patients with an average age of 52±1 years. Depending on the category of total cardiovascular risk, the patients were divided into 3 groups from I (lowest risk) to III (highest risk). The analysis was carried out on ABPM for 12–14 days (BPLab system of “Peter Telegin” firm). Determined: glomerular filtration rate (GFR), the thickness of the intima-media of the common carotid arteries, analysis of the lipid spectrum. For statistical analysis of clinical and instrumental data, a T-criterion for independent samples was used and an ANOVA analysis was performed. A correlation analysis was performed. Results. Patients of group III had the highest level of av. SBP (рI–III=0.010; pII–III=0.020) and mean pulse BP (PBP) (рI–III=0.002; pII–III=0.002), also more unfavorable the indicators cALALx (pI–II=0.025; рI–III=0.004), varAlx (рI–III=0.004) and av. ASI (рI–III=0.034). When comparing the data of patients of groups II and III, adjusted for gender and age, it was found that statistically significant differences between the groups of varPAD (pII–III=0.008), AASI (рI–III=0.043), varAlx (pII–III=0.049), as well as a pronounced tendency for varASI (pII–III=0.050). Markers of target organ damage (TIM, LVML, GFR) were more pronounced in the high-risk group. As the risk group increased, the level of HDL decreased (рI–III=0.002; pII–IIII=0.0001), the level of TG increased (рI–III=0.007; pII–III=0.009) and the CA (рI–III=0.015). The total cholesterol level was lower in patients of group III compared to group II (pII–III=0.004). Statistically signifi nt relationships of arterial wall stiffness indicators with age were found: crAlx (0.467, p<0.001), varAlx (0.272, p<0.01), cpASI (0.227, p<0.01), varASI (0.407, p<0.001). In addition, women showed significant correlations of medium and high strength between age and mean values of mean SPD (r = 0.490, p<0.05), varPAD (r=0.540, p<0.05), avAS (r=0.460, p<0.05) and varASI (r=0.620, p<0.05). VarASI and WedSASI were most closely associated with the level of SRSAD and SRPAD. Only cASI was associated with GFR, and only varASI was associated with the parameters of the lipid spectrum (HSLPVP, TG, KA and LVMI. Conclusion. The most statistically significant dynamics was observed when evaluating varASI, which varied in the sequence I gr. <II gr. < III gr. Corrected by sex and age, the analysis showed a greater variability in arterial stiffness in high-risk patients.
CURRÍCULO E FORMAÇÃO DO PROFESSOR EM EDUCAÇÃO FÍSICA: RELAÇÕES COM PRÁTICA PEDAGÓGICA
Authors: Marques Marcos Vinicius , Iaochite Roberto Tadeu 
Published: December 2018

Este artigo tem como objetivo verificar como se dá o relacionamento com a prática pedagógica, tanto no processo de configuração curricular, quanto na formação do professor, no âmbito da Educação Física escolar. Enquanto ponto de partida, valorizamos o papel do professor de Educação Física e dos saberes advindos da experiência pedagógica no processo de configuração curricular e na formação dos professores da área. Nove professores de Educação Física experientes com a prática pedagógica na escola responderam a uma entrevista. A partir dos dados obtidos com a mesma, foram levantadas e analisadas três categorias, as quais dizem respeito, principalmente à participação do professor no currículo e ao processo formação dos participantes. Os resultados apontam, especialmente no âmbito da Educação Física, para a importância da presença da prática pedagógica, tanto no processo de configuração do currículo, quanto na formação docente. Conclui-se que haja a necessidade de trilharmos o caminho no sentido da cultura profissional, na qual os conhecimentos práticos são fundamentais para o processo de configuração curricular e para a formação dos professores.
Palavras-chaves: Educação Física escolar. Currículo. Formação de professores.
ANÁLISE FATORIAL EXPLORATÓRIA DE UMA ESCALA DE ESTRATÉGIAS DE APRENDIZAGEM
Authors: Oliveira Antonio Figueiredo , Caliatto Susana Gakyia 
Published: December 2018

As estratégias de aprendizagem são técnicas, métodos, procedimentos ou sequências de ações escolhidas pelo estudante, de forma consciente, para a realização de uma determinada tarefa e para atingir objetivos de aprendizagem. O estudo das estratégias é fundamental para a educação, visto que elas funcionam como ferramenta do aprendiz. Esta pesquisa tem como objetivo descrever os passos relativos à construção da Escala de Estratégias de Aprendizagem para Estudantes Jovens e Adultos (EEA-JA), apresentar dados preliminares de suas propriedades psicométricas e buscar evidências de validade de construto. Participaram 800 estudantes de uma universidade particular do Sul de Minas Gerais, matriculados em nove cursos. A maioria dos participantes é do sexo feminino (N=453) e a idade média de 22 anos. Da análise fatorial exploratória dos 40 itens da escala, emergiram dois fatores coerentes com a descrição das estratégias de aprendizagem cognitivas e metacognitivas descritas pelas teorias Cognitiva e do Processamento Humano da Informação, com consistência interna medida pelo alfa de Cronbach, (0,85). Esses resultados iniciais revelam propriedades psicométricas promissoras da escala para uso no contexto educativo.
Palavras-chave: Estratégias de Aprendizagem. Escala. Validação.
DAS IMAGENS QUE HABITAM UM PENSAMENTO DE CURRÍCULO-PESQUISA
Authors: Vier Munhoz Angélica , Zanotelli Alissara , Munhoz Roos Bibiana 
Published: December 2018

Toma-se inicialmente a noção de imagem do pensamento a partir do filósofo francês, Gilles Deleuze. E a partir disso, busca-se rastrear, ainda que brevemente, tal conceito em suas obras, sem nenhuma pretensão de esgotar a aproximação com o referido conceito, até porque essa noção percorre, em alguma medida, toda a filosofia deleuziana. O que interessa aqui, é compreender como esse conceito opera, quais seus pressupostos e movimentos. Em um segundo momento, a tentativa é de imaginar um pensamento de currículo-pesquisa apartado do pensamento da representação ou de uma imagem dogmática do pensamento, tal como nomeia Deleuze (1976). Novamente não há uma pretensão de fazer um agenciamento de tais noções, mas tomar o conceito de imagem do pensamento, tão caro a Deleuze, para pensar um currículo capaz de produzir desdobramentos no pensamento, engendrando novas e outras imagens. Pretende-se, assim, tensionar as imagens de currículo que povoam as ideias, preenchem o pensamento, para, por outra via, reivindicar um pensamento de currículo sem modelo ou forma. Nesse meio, traz-se outros autores para pensar, tais como Benjamin (2007, 2012a, 2012b), Calvino (2010), entre outros. Por fim, busca-se arremessar o currículo a um plano de pensamento em que linhas de escrita, entrecruzamentos de conceitos, intersecções de práticas se tornem possíveis, entremeio a uma vida de pesquisa. O presente ensaio é escrito em meio a um estudo específico de um grupo de pesquisa, cujo objetivo é aproximar os movimentos do pensamento das discussões curriculares.
Palavras-chave: Currículo. Imagens do Pensamento. Criação.
Monochloramine dissipation in storm sewer systems: field testing and model development
Authors: Zhang Qianyi , Gaafar Mohamed , Davies Evan G. R. , Bolton James R. , Liu Yang 
Published: December 2018

Abstract
Monochloramine (NH2Cl), as the dominant disinfectant in drinking water chloramination, can provide long-term disinfection in distribution systems. However, NH2Cl can also be discharged into storm sewer systems and cause stormwater contamination through outdoor tap water uses. In storm sewer systems, NH2Cl dissipation can occur by three pathways: (i) auto-decomposition, (ii) chemical reaction with stormwater components, and (iii) biological dissipation. In this research, a field NH2Cl dissipation test was conducted with continuous tap water discharge into a storm sewer. The results showed a fast decrease of NH2Cl concentration from the discharge point to the sampling point at the beginning of the discharge period, while the rate of decrease decreased as time passed. Based on the various pathways involved in NH2Cl decay and the field testing results, a kinetic model was developed. To describe the variation of the NH2Cl dissipation rates during the field testing, a time coefficient fT was introduced, and the relationship between fT and time was determined. After calibration through the fT coefficient, the kinetic model described the field NH2Cl dissipation process well. The model developed in this research can assist in the regulation of tap water outdoor discharge and contribute to the protection of the aquatic environment.