bluuebunny/crossref_metadata_2025_split huggingface dataset:
Invitro Effect of Bulkfill and Incremental Application Techniques with Different Composite Filling Materials on Marginal Microleakage
Authors: Aulfat A. Albahari  , Ahmed A. Madfa  , Mohammed A. Dubais  
Published: August 2021

Abstract
Objective: To assess the in vitro effect of bulkfill and incremental application techniques on the microleakage of class II dental cavities filled with three different bulkfill composite materials at occlusal and cervical margins.
Methods: Standardized class II cavities were prepared on 120 human premolar teeth extracted for orthodontic treatment, which were randomly divided into two main groups of 60 teeth, corresponding to the two application techniques. Each group wasthen sub-dividedrandomly into three sub-groups based on the type of bulkfill restorative materials as follows: Tetric®N-Ceram BulkFill, Filtek™BulkFill flowable restorative material and X-trafil®BulkFill. All cavities were prepared and etched, and the corresponding self-etch bond adhesive systems were applied. A stereomicroscope was used to assess microleakage after thermocycling and immersion of the specimens in 0.1% methylene blue for 24 hours. Mann-Whitney U test was then used to analyze data.
Results: No statistically significant difference was found in the marginal microleakage between the incremental and bulkfill techniques using the three types of composite materials at both occlusal and cervical margins. The X-trafil®BulkFill showed the lowest score of microleakage with both application techniques compared to other bulkfill composite materials.
Conclusion: Both incremental and bulkfill application techniques using Tetric®N-Ceram BulkFill, Filtek™BulkFill flowable restorative material and X-trafil®BulkFill composite materials have a comparable effect on the marginal microleakage at occlusal and cervical margins of human teeth extracted from dental clinics in Sana’a city. Further studies are recommended to assess the clinical success of bulkfill composite materials using SEM or confocal microscope.
Quiste cerebral como complicación tardía inusual de lobectomía temporal en epilepsia farmacorresistente: reporte de un caso.
Authors: Barreto-Acevedo Elliot , Becerra-Zegarra Alicia , Villafuerte-Espinoza Mirla 
Published: August 2021

La lobectomía temporal anterior es una técnica que ha probado, con un muy alto nivel de evidencia (60-73% de los casos), alcanzar un estado libre de convulsiones en pacientes con epilepsia focal farmacorresistente del lóbulo temporal. Se trata de una técnica que aun cuando ha demostrado ser segura, no está del todo libre de complicaciones. Se han reportado, por ejemplo, cuadrantanopsia homónima superior y depresión como las complicaciones más frecuentes, en tanto que la ocurrencia de un quiste cerebral sintomático de instauración tardía es muy poco usual. Se describe el caso de una paciente sometida a lobectomía temporal derecha que presentó esta infrecuente complicación, y se incluyen una pertinente revisión de la literatura y mecanismos fisiopatogénicos propuestos.
Análisis de resultados en el curso de estadística descriptiva virtual para estudiantes de ingeniería en la UNAD
Authors: Mosquera William 
Published: August 2021

ONTARE. REVISTA DE INVESTIGACIÓN DE LA FACULTAD DE INGENIERÍA
El presente artículo es el resultado de la investigación sobre el análisis y la comparación de los resultados obtenidos en la evaluación final del curso de Estadística Descriptiva con el contenido programático y de calidad, en la Universidad Nacional Abierta y a Distancia, (UNAD), para los estudiantes de ingeniería y administración de empresas entre los periodos de 2008-I al 2011-I intersemestral, por medio de un estudio estadístico cuantitativo de las pruebas presentadas en los periodos determinados adicional a la revisión de cada una de las pruebas diseñadas y las estructuras de la misma, se consolidó la información suministrada por el director del curso y el sistema de evaluación de la Universidad, para convertirse en una herramienta básica en el diseño y mejora continua de la prueba y contenido modular, además proyectar estrategias para lograr un mejor rendimiento académico en el curso y como instrumento bibliográfico en estudios similares de otros cursos de la Institución.
Surrogate-Based Analysis of Chemical Enhanced Oil Recovery – A Comparative Analysis of Machine Learning Model Performance
Authors: Idogun Akpevwe Kelvin , Ujah Ruth Oyanu , James Lesley Anne 
Published: August 2021

Abstract
Optimizing decision and design variables for Chemical EOR is imperative for sensitivity and uncertainty analysis. However, these processes involve multiple reservoir simulation runs which increase computational cost and time. Surrogate models are capable of overcoming this impediment as they are capable of mimicking the capabilities of full field three-dimensional reservoir simulation models in detail and complexity. Artificial Neural Networks (ANN) and regression-based Design of Experiments (DoE) are common methods for surrogate modelling. In this study, a comparative analysis of data-driven surrogate model performance on Recovery Factor (RF) for Surfactant-Polymer flooding is investigated with seven input variables including Kv/Kh ratio, polymer concentration in polymer drive, surfactant slug size, surfactant concentration in surfactant slug, polymer concentration in surfactant slug, polymer drive size and salinity of polymer drive. Eleven Machine learning models including Multiple Linear Regression (MLR), Ridge and Lasso regression; Support Vector Regression (SVR), ANN as well as Classification and Regression Tree (CART) based algorithms including Decision Trees, Random Forest, eXtreme Gradient Boosting (XGBoost), Gradient Boosting and Extremely Randomized Trees (ERT), are applied on a dataset consisting of 202 datapoints. The results obtained indicate high model performance and accuracy for SVR, ANN and CART based ensemble techniques like Extremely Randomized Trees, Gradient Boost and XGBoost regression, with high R2 values and lowest Mean Squared Error (MSE) values for the training and test dataset. Unlike other studies on Chemical EOR surrogate modelling where sensitivity was analyzed with statistical DoE, we rank the input features using Decision Tree-based algorithms while model interpretability is achieved with Shapely Values. Results from feature ranking indicate that surfactant concentration, and slug size are the most influential parameters on the RF. Other important factors, though with less influence, are the polymer concentration in surfactant slug, polymer concentration in polymer drive and polymer drive size. The salinity of the polymer drive and the Kv/Kh ratio both have a negative effect on the RF, with a corresponding least level of significance.
Women’s role and support for the closed fishing season in the small-scale fisheries (SSF) of Davao Gulf, Philippines
Authors: Macusi Edison D , Macusi Erna S. , Gaab Charlen Mae , Barboza Anna , Digal Larry N. 
Published: August 2021

Abstract
Women’s role and support for the fisheries are barely acknowledged, they are stereotyped and marginalized and given limited participation in the fisheries. This study aims to describe the role of women and investigate their support for the closed fishing season in the small-scale fisheries (SSF) of Davao Gulf, Philippines. Survey data were collected in six study sites, only surveying women respondents involved in fishing and fishery-related activities. Interviews were conducted from November 2019 to July 2020 with respondents from Governor Generoso, Lupon, Davao City, Sta. Maria, Malita, and Don Marcelino (N = 255). The information collected was validated through seven focus groups with a total number of participants, N = 112. Results showed that women respondents who live near the shore, were poorly educated, attended elementary level (38%), do not own any parcel of land (91%), but have access to microfinance credit (64%). Women participated in the fisheries by gleaning for food and income. Some of their activities were performed to support their husbands, including preparing fishing gears (23%), food processing (6%), collecting and sorting fishery products (10%), marketing fish catches (25%), and gleaning (21%). Other results showed that women strongly support the closed fishing season which was significantly influenced by fisheries-related variables e.g. proportion of catch sold, and belonging to a family of fishers [B = 0.459 (S.E.=0.188), Wald = 5.928 df = 1, p = .015]. They support the policy for sustainability of their husband’s catches and their livelihood. Women also mentioned the need for financial seed capital for fishing gears, fishing operation and rented stalls for selling of fish.
“the Green Paradox Phenomenon: A European Union Empirical Application”
Authors: Tavares Ângelo Rafael , Robaina Margarita 
Published: August 2021

Abstract
The green paradox describes an undesirable and socially inefficient phenomenon caused by the expansionary reactions of the Supply as a response to the various mechanisms that combat climate change. This article seeks to understand and aggregate the different drivers of this phenomenon portrayed in the literature, as well the empirical evidence associated and the proposed solutions. For this purpose, compilation and systematization of the various scientific contributions up to date in this context have been elaborated, which led to the identification of five major drivers of the paradox: (i) Environmental Taxes, (ii) Green Supports, (iii) Uncertain Property Rights, (iv) Temporal Lag and (v) Emission limits (Cap). Moreover, we evaluate its effective impact on the European scenario in the last two decades, and we have obtained evidences that the hiatus in the implementation of the European emission cap mechanism has generated a strong green paradox. Moreover, a robust reflection regarding the economic and environmental adequacy of green supports should be considered due to its questionable net benefits. Lastly, we offer some recommendations of public environmental policies that escape the paradoxical phenomenon, through the enunciation of the conditionalities of these provocateurs.
Solanum Nigrum Leaf Extract Capped Copper Oxide Nanoparticles and its Tetrahedral L2Cu(ɳ2-BH4) Complex for Effective Degradation of Congo Red
Authors: Singh Kijay Bahadur , Gautam Neelam , Upadhyay Deen Dayal , Abbas Gulam , Pandey Gajanan 
Published: August 2021

Abstract
In this work, we reported the green synthesis of Solanum nigrum extract capped copper oxide nanoparticles (SN@CuO NPs) at room temperature, avoiding harsh, toxic, and environment unfriendly chemicals. The synthesized SN@CuO NPs, were analyzed with the help of spectroscopic techniques. UV-visible spectroscopy confirmed the synthesis of SN@CuO NPs in reaction mixture while fourier transform infrared spectroscopy (FTIR) results revealed capping of phytochemicals of Solanum nigrum over the surface of CuO NPs. Morphology and elemental composition of formed SN@CuO NPs were explored with the help of FE-SEM, TEM, and EDS, respectively. Crystalline nature, surface charge and specific surface area was characterized using XRD pattern, DLS and BET analyses, respectivley. The data obtained from spectroscopic analyses specified the formation of mesoporous, positively charged and highly stabilized CuO nanoparticles due to adsorption of phytochemicals present in Solanum nigrum leaf extract on the CuO nanoparticle’s surface. SN@CuO NPs have shown promising catalytic activity towards reduction of highly carcinogenic dye Congo red making use of sodium borohydride. Negatively charged reactants like anionic Congo red molecules and BH4− ions eagerly adsorbed on positively charged, small sizes (5–6 nm), mesoporous SN@CuO NPs surface having wide surface area. It is proposed that BH4− ions interacted with SN@CuO NPs to form Cu tetrahydroborates dihydrogen bonded (DHB) tetrahedral L2Cu(ɳ2-BH4) complex, which is proved as an effective reducing agent. This complex acts as dihydrogen source for rapid reduction of azo bond. UV-visible, FTIR, 1H NMR, 13C NMR, and LC-MS studies of reaction mixture at different reaction stages have shown that the major degradation intermediates were benzidine and α-naphthol. The apparent rate constants for the products at intermediate and final degradation stages have been found to be 0.468 min− 1 and 0.0189 min− 1, respectively. A plausible degradation mechanism for Congo red reduction has also been proposed in this study.
DNA methylation signature of chronic low-grade inflammation and its role in cardio-respiratory diseases
Authors: Wielscher Matthias , Mandaviya Pooja , Kuehnel Brigitte , Joehanes Roby , Mustafa Rima , Robinson Oliver , Zhang Tao , Bodinier Barbara , Walton Esther , Mishra Pashupati , Schlosser Pascal , Wilson Rory , Tsai Pei-Chien , Palaniswamy Saranya , Marioni Riccardo , Fiorito Giovanni , Cugliari Giovanni , Karhunen Ville , Ghanbari Mohsen , Psaty Bruce , Loh Marie , Bis Joshua , Lehne Benjamin , Sotoodehnia Nona , Deary Ian , Chadeau-Hyam Marc , Brody Jennifer , Cardona Alexia , Selvin Elizabeth , Smith Alicia , Miller Andrew , Torres Mylin , Marouli Eirini , Gào Xīn , Meurs Joyce van , Graf-Schindler Johanna , Rathmann Wolfgang , Koenig Wolfgang , Peters Annette , Weninger Wolfgang , Farlik Matthias , Zhang Yan , Chen Wei , Xia Yujing , Teumer Alexander , Nauck Matthias , Grabe Hans , Dörr Marcus , Lehtimäki Terho , Guan Weihua , Milani Lili , Tanaka Toshiko , Fischer Krista , Waite Lindsay , Kasela Silva , Vineis Paolo , Verweij Niek , Harst Pim van der , Iacoviello Licia , Sacerdote Carlotta , Panico Salvatore , Krogh Vittorio , Tumino Rosario , Tzala Evangelia , Matullo Giuseppe , Hurme Mikko , Raitakari Olli , Colicino Elena , Baccarelli Andrea , Kähönen Mika , Herzig Karl-Heinz , Li Shengxu , Heijmans Bastiaan , Conneely Karen , Kooner Jaspal , Kottgen Anna , Deloukas Panos , Relton Caroline , Ong Ken , Bell Jordana , Boerwinkle Eric , Elliott Paul , Brenner Hermann , Beekman Marian , Levy Daniel , Waldenberger Melanie , Chambers John , Dehghan Abbas , Jarvelin Marjo-Riitta 
Published: August 2021

Abstract
We performed a trans-ethnic Epigenome Wide Association study on 22,774 individuals to describe the DNA methylation signature of chronic low-grade inflammation as measured by C-Reactive protein (CRP). We found 1,511 independent differentially methylated loci associated with CRP. These CpG sites showed correlation structures across chromosomes, and were primarily situated in euchromatin, depleted in CpG islands and enriched in transcription factor binding sites and genomic enhancer regions. Mendelian randomisation analysis suggests altered CpG methylation is a consequence of increased blood CRP levels. Mediation analysis revealed obesity and smoking as important underlying driving factors for changed CpG methylation. Finally, we found that a fully activated CpG signature, meaning that if all novel discovered CpGs would either be fully methylated or unmethylated depending on their CRP associated direction of effect, the risk of myocardial infarction would be increased by 20.3%, risk of T2D by 11.3% and the risk of COPD by 5.6%.
Electronic and Physical Studies for Teflon FEP as a Thermal Control in Low Earth Orbit Reinforced With ZnO and SiO2 Nanoparticles
Authors: Hegazy Maroof A. , Ghoneim Rasha , Ezzat Hend , Yahia Ibrahim S. , Elhaes Hanan , IBRAHIM Medhat 
Published: August 2021

Abstract
Fluorinated Ethylene Propylene (Teﬂon FEP) is used as external layer thermal insulator for Hubble Space Telescope (HST) and on the outside surfaces of space crafts in the low earth orbit (LEO). Teflon FEP was eroding as a result of exposure to Atomic Oxygen (AO) and different electromagnetic waves such as Ultraviolet radiation and X-ray. Model molecules were used to simulate Teﬂon FEP and its interaction with other nanoparticles such as ZnO and SiO2. Density functional theory (DFT) was used to calculate model structures using B3LYP/LAN2DZ model. Molecular Electrostatic Potential as contour, band gap energy and total dipole moment were computed for all models. Thermal stability properties were also studied for Teﬂon FEP both individually and interacted with ZnO and SiO2. Results showed that a layer of OZn and SiO2 on Teflon FEP, especially Teflon FEP+OZn+OSiO structure, improves the physical, chemical, thermal, and electrical stability of Teflon FEP, potentially acting as a corrosion-inhibiting layer.
Managing non-target wildlife mortality whilst using rodenticides to eradicate invasive rodents on islands
Authors: Castaño Paula A. , Campbell Karl J. , Baxter Greg S. , Carrion Victor , Cunninghame Francesca , Fisher Penny , Griffiths Richard , Hanson Chad C. , Howald Gregg R. , Jolley Wesley J. , Keitt Bradford S. , McClelland Pete J. , Ponder Julia B. , Rueda Danny , Young Glyn , Sevilla Christian , Holmes Nick D. 
Published: August 2021

Abstract
Invasive rodents are one of the greatest threats to island biodiversity. Eradicating these species from islands has become increasingly practicable in recent decades, primarily using anticoagulant rodenticides. However, this approach also poses risks to native wildlife, and there has been corresponding development in the management of risks to non-target wildlife species. Here we review strategies and tactics used in operational management of non-target risk, using examples from rodent eradication projects conducted on 178 islands where non-target risk assessment and mitigation was a component of the rodent eradication campaign. We identified 17 different tactics within a framework of three strategic approaches: avoidance of risk, minimization of risk, and remediation of the impact of non-target wildlife mortality. We summarize these tactics in terms of their applicability, strengths, and weaknesses for rodent eradication projects in general, plus the potential interactions with achieving rodent eradication. There remains great potential for further innovation in reducing non-target wildlife risks from rodenticide used for invasive rodent eradications on islands, supporting advancement of the social acceptability of the toolset and biodiversity conservation.
MHD analysis on the physical designs of CFETR and HFRC
Authors: Zhu Ping , Li Li , Fang Yu , He Yuling , Wang Shuo , Han Rui , Liu Yue , Wang Xiaojing , Zhang Yang , Zhang Xiaodong , Yu Qingquan , Hu Liqun , Wang Huihui , Sun Youwen , Wei Lai , Tang Weikang , Liu Tong , Wang Zhengxiong , Yan Xingting , Huang Wenlong , Hou Yawei , Ji Xiaoquan , Zeng Shiyong , Abdullah Zafar , Chen Zhongyong , Zeng Long , Li Haolong , Chen Zhipeng , Wang Zhijiang , Rao Bo , Zhang Ming , Ding Yonghua , Pan Yuan 
Published: August 2021

Abstract
The China Fusion Engineering Test Reactor (CFETR) and the Huazhong Field Reversed Configuration (HFRC), currently both under intensive physical and engineering designs in China, are the two major projects representative of the lowdensity steady-state and high-density pulsed pathways to fusion. One of the primary tasks of the physics designs for both CFETR and HFRC is the assessment and analysis of the magnetohydrodynamic (MHD) stability of the proposed design schemes. Comprehensive efforts on the assessment of MHD stability of CFETR and HFRC baseline scenarios have led to preliminary progresses that may further benefit engineering designs. For CFETR, the ECCD power and current for full stabilization on NTM have been predicted in this work, as well as the corresponding controlled magnetic island width. A thorough investigation on RWM stability for CFETR is performed. For 80% of the steady state operation scenarios, active control methods may be required for RWM stabilization. The process of disruption mitigation with massive neon injection on CFETR is simulated. The time scale of and consequences of plasma disruption on CFETR are estimated, which are found equivalent to ITER. Major MHD instabilities such as NTM and RWM remain challenge to steady state tokamak operation. On this basis, next steps on CFETR MHD study are planned on NTM, RWM, and SPI disruption mitigation. For HFRC, plasma heating due to 2D adiabatic compression has been demonstrated in NIMROD simulations. The tilt and rotational instabilities grow on ideal MHD time scale in single fluid MHD model as shown from NIMROD calculations. Two-fluid MHD calculations using NIMROD find FLR stabilizing effects on both tilt and rotational modes. Energetic-particle stabilization of tilt mode was previously demonstrated in C-2 experiments and NIMROD simulations. With stabilization on major MHD instabilities from two-fluid and energetic particle effects, FRC may promise to be an alternative route to compact magnetic fusion ignition. To explore such a potential, we plan on further perform analyses of the MHD instabilities in HFRC during magnetic compression process.
Biofabrication of isotropic silver nanoparticles using cell-free metabolic extract of Bacillus kochii, and evaluation of their antimicrobial, antioxidant and catalytic potentials
Authors: Vadivel Meyappan , Mondal Moumita , Gurusamy Raman , Sakthivel Natarajan 
Published: August 2021

Abstract
Abstract

Microbial metabolites have been reported as potent candidates in the biofabrication of nanomaterials. For the first time, the present study reported the biofabrication of ecofriendly isotropic silver nanoparticles (BkCE-AgNPs) showed potential antimicrobial, antioxidant and biocatalysts characteristics using the metabolite of Bacillus kochii. Further, B. kochii crude extract (BkCE) mediated synthesis of BkCE-AgNPs was confirmed by surface plasmon resonance (SPR) peak at 420 nm using a UV-vis spectrophotometer. Various major physico-chemical parameters such as temperature, pH, crude extract concentration, AgNO3 concentration were utilized to characterize BkCE-AgNPs. In addition, FTIR analysis revealed the functional groups of active compounds present in the BkCE that mediated the fabrication of BkCE-AgNPs. Whereas, HRTEM confirmed the synthesis of BkCE-AgNPs with a size range between 4 to 44 nm and the crystalline nature of the biofabricated BkCE-AgNPs was confirmed by EDAX. Furthermore, the BkCE-AgNPs exhibited a broad-spectrum antimicrobial activity against A. baumannii, S. typhi, E. coli, K. pneumoniae, S. aureus and P. aeruginosa. The BkCE-AgNPs also showed excellent catalytic dye degradation potential and antioxidant activities confirmed by DPPH assay, total reducing sugar test and nitric oxide scavenging assays. In conclusion, the present study could help understand the development of biofabrication of nanomaterials using potent microbial metabolites in the agricultural and medicinal industries.
Estimation and verification of fractional derivative-based permeability of coals considering mining-induced stresses
Authors: Zhou Hongwei , Xie Senlin , Jia Wenhao , Zhao Jiawei , Yang Shuai , Wei Qing , Wang Xiangyu 
Published: August 2021

Abstract
To overcome the inaccuracy of the traditional transient pulse test, a new fractional derivative-based permeability estimation formula based on the transient pulse test is proposed to describe the pressure difference decay of a coal body subjected to mining-induced stresses. The permeability of coal specimens under mining disturbance conditions is measured using the MTS815 rock mechanics test system. The experimental results show that the transient pulse test based on the fractional derivative model provides a much better estimation of the coal specimen’s permeability than the conventional exponential decay model. Analyzing the evolution of the coal’s permeability shows that the permeability tends to decrease in the pre-peak compaction stage, following which it gradually increases in the plastic phase, and then increases sharply in the post-peak phase. The significance of the fractional derivative order γ is discussed, and its analysis shows that the solid-liquid interaction inside the specimen becomes complicated when the stress within the coal specimen changes.