bluuebunny/crossref_metadata_2025_split huggingface dataset:
Air Void Detection Using Ground-Penetrating Radar and Its Relationship to Moisture Damage
Authors: Ge Zhesheng , Wang Hao , Yao Hao , Zhang Qingshan , Zhang Long 
Published: August 2015

Abstract
Moisture transport in asphalt mixtures is influenced by the distribution and connectivity of air voids in the mixture. Therefore, characterization of air void structure is important for predicting moisture damage potential. The purpose of this paper was to detect the air void content of asphalt pavement using ground penetration radar (GPR) and then evaluate the moisture damage potential of asphalt mixtures with different air void contents. In particular, an innovative device, a dynamic water pressure tester (DWPT), was used to evaluate the resistance of asphalt mixture to moisture damage. A rotary loaded wheel tester (RLWT) was used to measure rutting resistance of asphalt mixture before and after being tested by DWPT. A linear relationship between air voids and the amplitudes of wave valley in the GPR signal was found. It suggested that the GPR waveform could be used to detect the air void content of asphalt pavement layers consistent with laboratory measurements. The relationship between air voids and rut depths measured with RLWT showed that an increase in air void content led to an increase in rut depth. Test results in the laboratory indicated that dynamic water pressure resulted in the greater reduction of strength and increase of rut depth if the asphalt mixture has higher air void contents.
Aging Kinetics Characteristics of Warm Mix Asphalt Binder Using Softening Point and n-pentane Asphaltene Content as the Parameters
Authors: Zhang Jiupeng , Chang Mingfeng , Pei Jianzhong , Xu Li , Xu Shicui 
Published: August 2015

Abstract
This paper presented research on the aging kinetics characteristics of asphalt binder by using softening point and n-pentane asphaltene content, respectively, as parameters. Sasobit additives were added into two matrix asphalt binders to prepare the warm mix asphalt binders, and then were aged at different temperatures and time. The softening points and contents of n-pentane asphaltene were measured. Results indicated that the softening point was improved by adding the additives. Both the softening point and content of n-pentane asphaltene increased with aging temperature and aging time, and the increments of matrix asphalt binders were bigger. Taking the softening point and content of n-pentane asphaltene as the parameters, respectively, the aging kinetics models were established, and the reaction rate constants and reaction activation energies were calculated. It was found that warm mix asphalt binders had lower reaction constants and bigger reaction activation energies, that is to say the anti-aging property of warm mix asphalt was better. The anti-aging properties could be better evaluated by the aging kinetics models based on the softening point for its higher accuracy and testing convenience.
Comparison of Two Physical Simulation Tests to Determine the No-Recrystallization Temperature in Hot Rolled Steel Plates
Authors: Homsher C. N. , Van Tyne C. J. 
Published: August 2015

Abstract
Two rolling simulations were conducted using a Gleeble 3500 to determine the no-recrystallization temperature, TNR on six microalloyed plate steels. Double hit deformation tests and multistep torsion tests were performed on steels containing varying amounts of Nb, V, and Ti. TNR for the double hit deformation tests were determined by finding fractional softening using the 5 % true-strain method and the intersection of the sigmoidal fractional softening curve with 20 % fractional softening. TNR for the multistep hot torsion test were determined using a mean flow stress method and finding the intersection of the two linear regions. TNR values following multistep hot torsion testing were lower than values measured after double hit deformation testing. The decrease in measured TNR values for the torsion tests occurs from the inherent multiple deformations, resulting in refined grains and an increase in nucleation sites for recrystallization during the subsequent deformation steps; thus recrystallization can continue to occur at lower temperatures.
Different Applications of the Gleeble® Thermal–Mechanical Simulator in Material Testing, Technology Optimization, and Process Modeling
Authors: Bereczki P. , Fekete B. , Szombathelyi V. , Misjak F. 
Published: August 2015

Abstract
In this study, our aim is to present a compilation about different applications of the Gleeble® thermal–mechanical system concerning material testing, characterization of advanced thermomechanically controlled processes and modeling the multiaxial forging technique. The first topic aims to provide an accurate input dataset for developing an energy-based fatigue model for 15Ch2MFA reactor steel. The process characterization intends to quantify the effect of deformation-stored energy on the start temperature and kinetic of the austenite–ferrite transformation. The modeling topic purposes to predict the evolution of the flow stress and the hardening behavior during processing a mild steel by multiaxial forging. All of these experiments were carried out on a Gleeble® 3800 simulator using different mobile conversion units. The fatigue tests were conducted under uniaxial tension–compression loading with in-phase thermal cycles. To develop a new energy-based low-cycle fatigue (LCF) model, the energy balance of the plastic deformation was also investigated. Moreover, the evolution of the microstructure was observed by transmission electron microscopy (TEM) studies at the different stages of the nominal failure lifetime. The deformation-induced ferrite transformation (DIFT) effect was characterized by a high-resolution dilatometer under uniaxial hot compression tests. An advanced simulation program and experimental setup have been developed for the calculation of reliable flow curve from the data, sampled during the multiaxial forging simulation. Concerning the thermomechanical fatigue tests, the experimental results correspond to the Coffin–Manson curve. Furthermore, temperature evolution measurements were performed to provide input data to the calculation of the plastic strain energy partition converted to heat. Finally, the effect of the deformation stored energy on the start and finish temperature of austenite transformation was obtained and quantified.
Analysis of Microstructure in Hot Torsion Simulation
Authors: Whitley B. M. , Araujo A. L. , Speer J. G. , Findley K. O. , Matlock D. K. 
Published: August 2015

Abstract
Hot torsion is frequently employed to simulate multipass thermomechanical rolling. While flow behavior, observed through shear stress versus shear strain, is typically used to characterize hot deformation and softening behaviors, the resulting microstructures can also provide significant insight into microstructural evolution and strain accumulation during the hot deformation process. A preferred approach for the analysis of microstructural features resulting from hot torsion is presented. Torsional strain paths are reviewed and compared with traditional hot rolling deformations. A tangential sectioning technique, combined with supporting fundamentals, is also presented. Microstructural observation of steels thermomechanically deformed in hot torsion verified the ability to reasonably quantify strain from microstructural analysis. This approach offers a new method for assessing shear strain accumulation within local regions of a body plastically deformed in torsion, and should provide a useful complement to the assessment of mechanical responses in hot deformation studies.
Theoretical Modeling of Internal Ionic Resistance Due to SEI Layer Formation in Li/S Batteries
Authors: Behzadirad M. , Lavrova O. , Busani T. 
Published: August 2015

ABSTRACTLi/S batteries have received too much attention due to their considerable theoretical energy density suitable for high energy applications. Here, we study the consequences of the SEI layer on internal resistance of the single battery cell due to polysulfide (PS) shuttling. The growth in resistance is related to the capacity fading of the cell. Using a model of series resistors, the total internal ionic resistance over cycling performance is expressed and compared for various nanostructured cathodes at different rates. It has been shown that SEI layer is the most significant factor in increasing of ionic resistance at the beginning of the battery aging, while electrode degradation and other phenomena are dominating resistance rise over higher cycles. We also demonstrate that cathodes with smaller equivalent porosity represent an excellent performance in preventing internal resistance enhancement.
A apreciação dos trágicos gregos pelos poetas e teorizadores portugueses do século XVIII
Authors: Pereira Maria Helena Da Rocha 
Published: August 2015

"O único caminho para nos tornarmos grandes, até mesmo, se possível, imortais, é a imitação dos Antigos". Esta famosa frase de Winckelmann, o fundador do Neo-helenismo, como lhe chamou Pfeiffer, é também válida para a maior parte dos poetas portugueses do Séc. XVIII. O renovado culto da Antigüidade tínha penetrado em Portugal por mediação francesa. A origem deste acontecimento cultural, que é considerado uma reação contra o barroco, reside, na opinião geral, na publicação de uma série de livros: primeiro, a tradução da Art Poétique de Boileau, por Fran cisco Xavier de Meneses, quarto Conde da Ericeira (escrita em 1697, e muito lida em manuscrito, mas só impressa em 1793), depois do Exame Critico de Valadares e Sousa (1739); sete anos mais tarde saiu O Verdadeiro Método de Estudar de Verney que deu, como todos sabem, o primeiro grande impulso à reforma dos estudos. No ano seguinte, portanto em 1747, estalou a demorada polêmica entre o Marquês de Valença e Alexandre de Gusmão sobre o novo teatro, na qual o primeiro defendia a dramaturgia espanhola, e o segundo a francesa. Apenas um ano mais tarde, publicou Francisco José Freire (o arcádico Cândido Lusitano) a sua Arte Poética, que compendiava quase todas as regras provenientes, não só da Poética de Aristóteles e de Horácio, mas também da de Franceses, Italianos e Espanhóis. Que o livro não apresenta qualquer ponto de vista original, recónheceu-o o próprio autor, ao citar, incessantemente, para além dos teóricos gregos e latinos, os humanistas do Séc. XVI como Vossius, Scaliger, Castelvetro, Minturno, Robortello, e os modernos dos Séc. XVII e XVIII, como Boileau, Le Bossu, Dacier, Rolin, Muratori, Luzán e muitos outros. Conquanto estes teorizadores fossem conhecidos dos poe tas portugueses, o tratado permaneceu como o compêndio basilar da maioria, como se deduz das entusiásticas palavras de Manuel de Figueiredo:
Camões de cordel
Authors: Pontes Joel 
Published: August 2015

Nas comemorações tetracentenárias de Os Lusíadas, lembro dois folhetos de cordel circulantes no Nordeste do Brasil: As Perguntas do REI a CAMÕES e O Filho de Camões. Trata-se de poesia rústica, feita por e para gente semi-alfabetizada, e para analfabetos, por isso mesmo representativa da simpatia de uma parte do povo - aquela que não tem voz nos meios literários propriamente ditos, e que constitui parcela ponderável, ainda, na população brasileira, que atualmente se alfabetiza e se torna, cada vez mais, urbana.
Capsular dissection technique for reducing recurrent laryngeal neuropraxia and temporary hypoparathyroidism after thyroidectomy: a single center experience
Authors: Chisthi Meer M. , Kuttanchettiyar Krishnakumar G. 
Published: August 2015

<p class="abstract"><strong><span lang="EN-US">Background: </span></strong>Recurrent laryngeal nerve injury and hypoparathyroidism are two of the much discussed major complications of thyroid surgery. It has been classically described by the majority of textbooks to meticulously dissect out the course of the recurrent laryngeal nerve to avoid its injury. However, the argument remains that this dissection might devascularise the nerve and the parathyroids, leading to recurrent laryngeal neuropraxia and temporary hypocalcemia. Hence some authors have recommended adopting a capsular dissection technique in order to avoid these complications.</p><p class="abstract"><strong><span lang="EN-US">Methods: </span></strong>This retrospective descriptive study analysed the outcome in a large series of patients who underwent total thyroidectomy by capsular dissection technique, over a 5 year period in a tertiary care center.</p><p class="abstract"><strong><span lang="EN-US">Results: </span></strong>As per this study, the incidence of permanent nerve damage was zero whereas the incidence of temporary neuropraxia was found to be around 0.5%. The incidence of temporary and permanent hypocalcemia was found to be around 0.7% and 0.2% respectively. These complications were found more in obese patients and those with malignancies.</p><p class="abstract"><strong><span lang="EN-US">Conclusions: </span></strong>Taking account of the very low incidence of nerve and parathyroid injury in this series, the authors suggest that meticulous capsular dissection is superior to dissection of the entire nerve in avoiding transcient nerve damage as well as temporary hypocalcemia. However it is stated that a deliberate search for the nerve is definitely indicated in cases where there is likely to be distorted anatomy, as in infiltrating malignancies and recurrent thyroidectomies.</p>
QUALIDADE INFORMACIONAL E NÍVEL DE TRANSPARÊNCIA: UM ESTUDO ENTRE EMPRESAS GANHADORAS E NÃO GANHADORAS DO TROFÉU TRANSPARÊNCIA FIPECAFI-SERASA EXPERIAN
Authors: Marques Vagner Antonio , Silva Fabrine Gonçalves Dias da , Louzada Luiz Cláudio , Amaral Hudson Fernandes , Souza Antônio Artur de 
Published: August 2015

<p>A literatura estrangeira tem recorrentemente apresentado evidências de que a estrutura de governança e o nível de transparência afetam a qualidade informacional dos números contábeis. Diante disso, o objetivo do presente estudo foi analisar a relação entre a qualidade das informações contábeis e o nível de transparência das empresas brasileiras. O estudo é descritivo, documental e quantitativo, com dados trimestrais de 18 empresas no período de 2007 a 2013. Os resultados evidenciaram que as empresas ganhadoras do Prêmio Associação Nacional dos Executivos de Finanças, Administração e Contabilidade (ANEFAC), as correlações (entre 52,8% e 63,1%) entre VMA, LPA e Patrimônio Líquido por Ação (PLA) foram estatisticamente significativas. O modelo de regressão foi estatisticamente significativo (α, 1) para as empresas ganhadoras, com um <!--?mso-application progid=&quot;Word.Document&quot;?--> 12R2"&gt; de 46,78%, enquanto o modelo para as não ganhadoras teve um <!--?mso-application progid=&quot;Word.Document&quot;?--> 12R2"&gt; de 0,01%. Além disso, as variáveis explicativas (LPA, PLA e intercepto) foram significativas ao nível de 1%, enquanto no modelo composto por empresas não ganhadoras, o PLA não foi significativo. A maior capacidade informacional dos números contábeis das empresas ganhadoras é coerente com a teoria da divulgação.</p><p>Palavras-chave: Qualidade das informações contábeis. Relevância do valor. Nível de transparência.</p>
First Deployment of the Underwater Drill Rig MeBo200 in the North Sea and its Applications for the Geotechnical Exploration
Authors: Spagnoli G. , Finkenzeller S. , Freudenthal T. , Hoekstra T. , Woollard M. , Storteboom O. , Weixler L. 
Published: August 2015

Abstract
As the drilling technology has advanced, recent deepwater developments and explorations are currently taking place in Gulf of Mexico, Brazil and West Africa where deeper reserves of oil have become more accessible. The study of the subsea soil (e.g. soil investigation, positioning foundation design) is one of the activities required for the subsea field development. Electromagnetic tests, CPT tests, gravity, piston core or vibrocore samples are obtained by deploying down-hole systems from drilling vessels. However, because of the high costs and low availability of drill ships, and because ship and drill-string motion due to wind, currents and waves affect the quality of the drilling process, robotic drill rigs are currently more widely used. The following paper describes the MeBo200 as a novel underwater drill rig for geotechnical/geological explorations. The MeBo200 drilling rig is lowered to the sea floor and operated remotely from the ship to drill up to 200m into the sea floor at an ambient pressure of up to 400bar. It was developed in cooperation by MARUM Center for Marine Environmental Sciences (University of Bremen) and BAUER Maschinen GmbH. The complete system is transported within seven 20 ft containers. MeBo200 is a second generation of the MeBo, which was the first remote-controlled deep sea drill rig that uses a wireline coring technique. The weight of the MeBo200 is about 10 tons in air and 8 tons in water and therefore it does not need special drill ships to be managed reducing therefore the mobilization costs for worldwide deployment. The MeBo200 was deployed in the German sector of the North Sea in October 2014 to test the functionality of the seabed-based drill rig. Currently MeBo200 is being upgraded with CPT technology from A.P. van den Berg Ingenieursburo bv.
Intelligent Completions Customized to Meet the Challenges of Malaysia Reservoirs: Work Flow and Case Histories
Authors: Masoudi Rahim , Chan Keng Seng , Karkooti Hooman , Soni Sumit , Jalan Shlok , Shahreyar Noman , Kalyani Tejas , Finley Douglas 
Published: August 2015

Abstract
Intelligent well completions (IWC) have been installed in Malaysia since 2003, but only recently has this technology become widely accepted. This acceptance has resulted from recognition of values such as reduced capital cost, improved productivity, and increased ultimate recovery. Initial documentation on IWC capabilities was presented in 2012 (Masoudi et al. 2012). Since then, additional well and reservoir modeling has been conducted, and the added benefits shown from use of active flow control in these completions is documented, further improving IWC acceptance. This paper discusses the improvements gained from these studies, including the following: Determining if zonal flow control is necessary.Identifying which flow-control equipment is best-suited for the well.Determining the quantitative value in terms of productivity or injectivity and the estimated ultimate recovery (EUR) of installing flow control.
Additionally, the importance of subsurface data gathering and the quality assurance and control (QA/QC) from that data are discussed, including the importance of identifying potential subsurface uncertainties during the IWC planning and design phases.
Two intelligent-completion design examples from actual cases using the previously mentioned improvements resulted in successful completion designs. The design examples were from offshore wells that intercepted segmented or compartmentalized reservoirs and/or thin-oil rims. Additionally, the intelligent completion designs described in this paper were shown to be suitable for inclusion in sand-control methods, if necessary, as well as having the capability to address possible conformance issues.
This paper presents the methodology used in the modeling as well as the successful end results anticipated by the operator(s) when using the IWC designs.
Accuracy and reliability of 3D stereophotogrammetry: A comparison to direct anthropometry and 2D photogrammetry
Authors: Dindaroğlu Furkan , Kutlu Pınar , Duran Gökhan Serhat , Görgülü Serkan , Aslan Erhan 
Published: August 2015

ABSTRACT

Objective:
To evaluate the accuracy of three-dimensional (3D) stereophotogrammetry by comparing it with the direct anthropometry and digital photogrammetry methods. The reliability of 3D stereophotogrammetry was also examined.

Materials and Methods:
Six profile and four frontal parameters were directly measured on the faces of 80 participants. The same measurements were repeated using two-dimensional (2D) photogrammetry and 3D stereophotogrammetry (3dMDflex System, 3dMD, Atlanta, Ga) to obtain images of the subjects. Another observer made the same measurements for images obtained with 3D stereophotogrammetry, and interobserver reproducibility was evaluated for 3D images. Both observers remeasured the 3D images 1 month later, and intraobserver reproducibility was evaluated. Statistical analysis was conducted using the paired samples t-test, intraclass correlation coefficient, and Bland-Altman limits of agreement.

Results:
The highest mean difference was 0.30 mm between direct measurement and photogrammetry, 0.21 mm between direct measurement and 3D stereophotogrammetry, and 0.5 mm between photogrammetry and 3D stereophotogrammetry. The lowest agreement value was 0.965 in the Sn-Pro parameter between the photogrammetry and 3D stereophotogrammetry methods. Agreement between the two observers varied from 0.90 (Ch-Ch) to 0.99 (Sn-Me) in linear measurements. For intraobserver agreement, the highest difference between means was 0.33 for observer 1 and 1.42 mm for observer 2.

Conclusions:
Measurements obtained using 3D stereophotogrammetry indicate that it may be an accurate and reliable imaging method for use in orthodontics.
Effect of Different Light Sources and Enamel Preconditioning on Color Change, H2O2 Penetration, and Cytotoxicity in Bleached Teeth
Authors: Gonçalves RS , Costa CAS , Soares DGS , Santos PH dos , Cintra LTA , Briso ALF 
Published: August 2015

SUMMARY
This study evaluated the effects of acid etching of the enamel and the combination of different light sources (halogen light, light-emitting diodes [LEDs], and LED/Laser) and the bleaching product on color change, penetration of hydrogen peroxide (H2O2), and cytotoxicity over time. The color change (ΔE) and the amount of H2O2 that permeated the tooth tissue were analyzed using a spectrophotometer. Cell metabolism and morphology were evaluated using the methylthiazol tetrazolium assay and scanning electron microscopy, respectively. The ΔE values and H2O2 permeation were not significantly different under any of the experimental conditions. Tooth whitening significantly reduced cell metabolism, regardless of whether a light source was used. Preconditioning the enamel did not influence the cellular metabolism in any group. In conclusion, combining the bleaching product with different light sources and/or preconditioning the enamel resulted in few significant changes in color, transenamel and transdentinal penetration of H2O2, or cytotoxicity and cell morphology.
Cytotoxic, thrombolytic, membrane stabilizing and anti-oxidant activities of <i>Hygrophila schulli</i>
Authors: Sufian Md. Abu , Haque Mohammad Rashedul 
Published: August 2015

<p class="Abstract">The crude methanol extract of Hygrophila schulli and its petroleum ether, chloroform, ethyl acetate and aqueous soluble Kupchan partitionates were investigated for in vitro cytotoxic, thrombolytic, membrane stabilizing and anti-oxidant activities. In the brine shrimp lethality bioassay, the petroleum ether soluble extract of H. schulli showed significant cytotoxicity (LC<sub>50</sub> = 0.1 µg/mL and LC<sub>90</sub> = 15 µg/mL) as compared to vincristine sulfate (LC<sub>50</sub> = 0.4 µg/mL and LC<sub>90</sub> = 9 µg/mL). Among all the partitionates, chloroform soluble fraction demonstrated the highest thrombolytic activity with 10.5% clot lyses. Moreover, in hypotonic- and heat-induced conditions, the chloroform soluble extractive inhibited hemolysis of human erythrocyte by 113.7% and 14.3%, respectively as compared to 71.9% and 42.2% demonstrated by standard acetylsalicylic acid. On the other hand, in anti-oxidant activity test, chloroform soluble fraction revealed mild antioxidant activity (IC<sub>50</sub> = 195.1 µg/mL) as compared to standard tert-butyl-1-hydroxytoluene (IC<sub>50</sub> = 27.5 µg/mL).</p><p> </p>