bluuebunny/crossref_metadata_2025_split huggingface dataset:
Highly durable macromolecular epoxy resin as anticorrosive coating material for carbon steel in 3% NaCl: Computational supported experimental studies
Authors: Dagdag Omar , Berisha Avni , Safi Zaki , Dagdag Saïd , Berrani Majda , Jodeh Shehdeh , Verma Chandrabhan , Ebenso Eno E. , Wazzan Nuha , El Harfi Ahmed 
Published: January 2020

AbstractThe purpose of present study is in the direction of development of an anticorrosive coating formulation of high durability for carbon steel corrosion in 3 wt% NaCl medium. The formulation comprises of a macromolecular epoxy coating (DGEDDS‐MDA) based bisphenol S diglycidyl ether (DGEDDS) cured with a methylene dianiline (MDA). The formulation was characterized by FT‐IR spectroscopy method. Performance of the epoxy coating was represented using PDP and EIS approaches. The formulation acts as effective anticorrosive coating for long durability (180 days). Surfaces of the specimens before and after 180 days exposure to UV radiation were examined using SEM. PDP, SEM, and EIS studies showed that DGEDDS‐MDA acted as highly durable and effective anticorrosive formulation. Results also showed that the formulation acts as interface type inhibitor and its presence enhances the polarization resistance (Rp) value. DFT study suggests that the formulation DGEDDS‐MDA possesses strong ability to interact with metal surface through its several electron rich centers. MD and MC simulations showed that studied formulation effectively adsorb on the substrate (metallic surface). Results of EIS, PDP, and SEM studies (experimental) were well‐supported by DFT, MD, and MC (computational) simulations.
A practical guide to the stereological assessment of glomerular number, size, and cellular composition
Authors: Sutherland Megan R. , Vojisavljevic Danica , Black Mary Jane 
Published: January 2020

AbstractThe evaluation of a range of measures in the kidneys, such as developmental stage, rate and success, injury, and disease processes, relies on obtaining information on the three‐dimensional structure of the renal corpuscles, and in particular the glomerular capillary tufts. To do this in the most accurate, comprehensive, and unbiased manner depends on a knowledge of stereological methods. In this article, we provide a practical guide for researchers on how to quantitate a number of structures in the kidneys, including the estimation of total glomerular number, glomerular capillary length and filtration surface area, and the cellular composition of individual glomeruli. Guidance is also provided on how to apply these methods to kidneys at different sizes and levels of maturity.
Identification of Cartilage Microbial DNA Signatures and Associations With Knee and Hip Osteoarthritis
Authors: Dunn Christopher M. , Velasco Cassandra , Rivas Alexander , Andrews Madison , Garman Cassandra , Jacob Paul B. , Jeffries Matlock A. 
Published: January 2020

ObjectiveAlterations of the gut microbiota have been implicated in many forms of arthritis, but an examination of cartilage microbial patterns has not been performed. This study was undertaken to characterize the microbial DNA profile of articular cartilage and determine changes associated with osteoarthritis (OA).MethodsWe performed 16S ribosomal RNA gene deep sequencing on eroded and intact cartilage samples from knee OA patients (n = 21 eroded and 21 intact samples) and hip OA patients (n = 34 eroded and 33 intact samples) and cadaver controls (n = 10 knee samples and 10 hip samples). Microbial DNA diversity was assessed, groups were compared, and metagenomic profiles were reconstructed. Confirmation was performed in an independent cohort by clade‐specific quantitative polymerase chain reaction. Findings in human cartilage were compared to those in cartilage from OA‐susceptible C57BL/6 (B6) mice and OA‐resistant MRL/MpJ (MRL) mice. Germ‐free B6 mouse cartilage was analyzed as a methodologic control.ResultsAlpha diversity was reduced in human OA versus control samples (P < 0.0001), and in hip versus knee samples (P < 0.0001). Numerous clades were different in human OA versus control samples, and similar findings were noted in comparisons of murine B6 versus MRL mice. Hip samples were microbiologically distinct from knee samples. OA microbial DNA demonstrated increased gram‐negative constituents (P = 0.02). Functional analysis demonstrated increases in lipopolysaccharide production (P = 9.9 × 10−3), phosphatidylinositol signaling (P = 4.2 × 10−4), and nitrogen metabolism (P = 8 × 10−3) and decreases in sphingolipid metabolism (P = 7.7 × 10−4) associated with OA.ConclusionOur study reveals a microbial DNA signature in human and mouse cartilage. Alterations in this signature, including increases in gram‐negative constituents, occur during the development and progression of human OA. Furthermore, our findings indicate that strain‐specific signatures exist within mouse cartilage that mirror human patterns. Further study of the establishment and potential pathogenic role of these DNA signatures is needed.
Evaluating the effect of parent reading interventions on improving reading fluency of students with reading difficulties
Authors: Doǧanay Bilgi Arzu 
Published: January 2020

AbstractThe current study examines the effect of parent reading interventions on the reading fluency of students with reading disabilities. The experimental procedure was carried out in two stages. In the first stage, the Brief Experimental Analysis procedure was followed to determine the most effective reading fluency intervention for all participants, and in the next step, the parental delivery of the selected intervention procedure took place. Brief experimental analysis was used to identify appropriate reading fluency intervention for each participant. Parents were trained to use the intervention strategies with their children. They implemented the procedures during parent‐tutoring sessions at home and results were measured continuously to determine whether generalization occurred. Parent and child satisfaction with the interventions was assessed. Results demonstrated generalized increases in reading fluency in both high‐word‐overlap and low‐word‐overlap passages as a function of parent tutoring. Also, acceptability ratings by children and their parents indicated that they viewed the interventions as acceptable and effective.
One‐year clinical results of the NANO registry: A multicenter, prospective all‐comers registry study in patients receiving implantation of a polymer‐free sirolimus‐eluting stent
Authors: Liu Yi , Zhang Yaojun , Li Yue , Qi Tianjun , Pan Defeng , Wang Haichang , Liu Changhui , Ma Dengfeng , Fang Zhenfei , Zhang Ruining , Mou Fangjun , Tao Ling ,   On Behalf of the NANO All‐Comers Registry Investigators
Published: January 2020

AbstractObjectivesWe aimed to evaluate the safety and efficacy of Nano+™ (Lepu Medical, Beijing, China) stent implantation in all‐comer patients at the 1‐year follow‐up.BackgroundThe Nano+™ stent is a novel polymer‐free sirolimus‐eluting stent polymer that employs nanoporous stent surface technology to control drug‐delivery. The Nano+™ stent is one of the most widely used drug‐eluting stent (DES) in China.MethodsA total of 2,481 consecutive patients were included in the multicenter and prospective NANO registry. In this study, the primary endpoint was target lesion failure (TLF) at 1‐year follow‐up, defined as a composite of cardiac death, target vessel nonfatal myocardial infarction (TV‐MI), and clinically driven target lesion revascularization (TLR). The safety endpoint was the occurrence of definite or probable stent thrombosis (ST).ResultsUp to 40.2% of patients presented with acute myocardial infarction (AMI). A total of 63.9% of the 2,904 lesions were American College of Cardiology/American Heart Association (ACC/AHA) type B2 or C lesions. One‐year follow‐up data were available for 98.4% of patients. The 1‐year rate of TLF was 3.1% with rates of 1.3, 1.8, and 0.4% for clinically driven TLR, cardiac death, and TV‐MI, respectively. ST occurred in 0.4% of patients. Diabetes mellitus, AMI, left ventricular ejection fraction <40% and long lesions (>40 mm) were independent predictors of 1‐year TLF.ConclusionsThe 1‐year clinical outcomes were excellent for Nano+™ polymer‐free SES implantation in an all‐comer patient population. Follow‐up will be extended up to 5 years, to further elucidate the potential long‐term clinical benefits.Clinical Trial RegistrationURL:https://www.clinicaltrials.gov/. Unique identifier: NCT02929030.
ABC‐type diffuse large B‐cell lymphoma presenting as rotator cuff tendinopathy: A diagnostic dilemma and review of the literature
Authors: Beutler Bryce David , Krishan Rohee , Parafianowicz Pawel , Ulanja Mark B. , Elliott Christie , France Joel , Islam Raheel , Gullapalli Nageshwara 
Published: January 2020

AbstractDiffuse large B‐cell lymphoma often presents with extranodal manifestations involving the musculoskeletal system. Shoulder pain is particularly worrisome for malignancy. Individuals presenting with refractory upper extremity complaints should undergo a prompt and thorough evaluation for cancer, as a delay in diagnosis can result in an unfavorable outcome.
Structure and Quantification of Edge Sites of WS2/Al2O3 Catalysts Coupling IR/CO Spectroscopy and DFT Calculations
Authors: Zavala‐Sanchez Luz , Khalil Ibrahim , Oliviero Laetitia , Paul Jean‐François , Maugé Françoise 
Published: January 2020

AbstractIR spectroscopy of CO adsorption (IR/CO) and Density Functional Theory (DFT) calculations on sulfide W/Al2O3 catalyst were investigated for an insight into the sulfide edge sites. Parallel between experimental and theoretical results allow to assign the ν(CO) bands at 2121 and 2066 cm−1 to CO adsorption on M‐ and S‐edge sites of WS2 phase, respectively. Through a careful analysis of CO spectra on well‐selected W catalysts, the molar attenuation coefficients for CO adsorbed on the two exposed edges could be determined. This allowed the morphology of WS2 slabs to be calculated. This work shows that increasing the W loading (6–20 wt% W) changes the slab morphology from an almost pure triangle exhibiting mostly M‐edge to a truncated triangle. On W as well as on Mo sulfide catalysts, IR spectroscopy and DFT calculation show that CO adsorption allows to account for M‐ and S‐edge sites, and thus of the morphology of sulfide slabs. It was shown that increasing the W loading shifts the slab morphology from a triangle exposing predominantly M‐edge towards a more hexagonal shape. For close to monolayer coverage of alumina, Mo and W sulfide slabs present similar shape i. e. truncated triangle. However, edge sites of WS2 slabs clearly exhibit greater stability under H2 atmosphere than Mo sulfided ones.
Oriented Isomorphous Substitution: An Efficient and Alternative Route to Fabricate the Zn Rich Phase Pure (Cu1−x,Znx)2(OH)2CO3 Precursor Catalyst for Methanol Synthesis
Authors: Zheng Huayan , Narkhede Nilesh , Zhang Huacheng , Li Zhong 
Published: January 2020

AbstractA new methodology has been demonstrated for the synthesis of a series of phase pure (Cu1−x,Znx)2(OH)2CO3 precursors by isomorphous substitution of Zn2+ in the malachite structure. By following the present protocol, it was possible to synthesize the pure phase (Cu1−x,Znx)2(OH)2CO3 with substitution level as high as x=0.5, which is better than the maximum possible value achieved by coprecipitation method, i. e. x=0.31. The isomorphous substitution by Zn2+ leads to the change in the morphology of malachite crystals from flake‐like to regular needle‐like shape with high Zn dispersion. The activity of the calcined catalysts was increased by ∼1.5–1.7 fold for the hydrogenation of syngas to methanol as compared with those prepared from the traditional coprecipitation route. The synergy between Cu and ZnO was further demonstrated quantitatively by characterization of the catalysts treated with syngas at 250 °C.
Entwicklung des Katalysatorbetts in einem Flachbettreaktor zur CO2‐Methanisierung
Authors: Ghaib Karim 
Published: January 2020

AbstractDie vorliegende Arbeit stellt einen Entwicklungsschritt eines neuartigen Flachbettreaktors zur CO2‐Methanisierung sowie eine CFD‐basierte Methode, die zur Entwicklung und Optimierung von Reaktoren angewendet werden kann, vor. Der Entwicklungsschritt umfasst die Konstruktion des Katalysatorbetts im Flachbettreaktor, in das ein reiner stöchiometrischer Feed zugeführt wird. Die Ergebnisse zeigen, dass ein hoher CO2‐Umsatz (92,9 %) und ein kleiner Temperaturanstieg im Katalysatorbett (12,4 °C) mit einer Anordnung des Katalysatorbetts erzielt werden können. Der Wärmefluss erreicht 1924 W m−2 im Hotspot‐Bereich.
A Synthetic Strategy for the Structural Modification of Photoactivatable BODIPY‐Oxazine Dyads
Authors: Thapaliya Ek Raj , Mazza Mercedes M. A. , Cusido Janet , Baker James D. , Raymo Françisco M. 
Published: January 2020

AbstractStrategies to regulate the ability of photoactivatable fluorophores to absorb activating photons are essential to allow their operation under illumination conditions compatible with biological samples. In this context, our laboratories identified a viable synthetic protocol to introduce a conjugated substituent on the photocleavable component of a BODIPY‐oxazine dyad and enhance its molar absorption coefficient at the activation wavelength. This structural transformation translates into a four‐fold absorbance increase in the spectral window appropriate for photoactivation and does not prevent the photochemical transformation. Indeed, the photoinduced cleavage of the oxazine component occurs in organic solvents, aqueous solutions and hydrogel matrices with a concomitant bathochromic shift in BODIPY emission. These results demonstrate that the photophysical properties of this family of BODIPY‐oxazine dyads can be manipulated with the aid of chemical synthesis without suppressing their photochemical behavior.
Metal–Nitrogen–Carbon Electrocatalysts for CO2 Reduction towards Syngas Generation
Authors: Delafontaine Laurent , Asset Tristan , Atanassov Plamen 
Published: January 2020

AbstractShifting syngas (an H2/CO mixture) production away from fossil‐fuel‐dependent processes (e.g., steam methane reforming and coal gasification) is mandatory, as syngas is of interest as both a fuel and as a value‐added chemical precursor. With appropriate electrocatalysts, such as silver‐based and metal–nitrogen–carbon (M‐N‐C) materials, the electrochemical CO2 reduction reaction (CO2RR) allows for the production of CO alongside H2 (from the hydrogen evolution reaction), and thus leads to syngas generation. In this Minireview, the application of M‐N‐C electrocatalysts for syngas generation is discussed. The mechanisms leading to different faradaic selectivities for CO are reviewed as a function of the nature of the metal, by using both computational and experimental approaches. The role played by the metal‐free moieties in the M‐N‐C electrocatalysts is underlined. Since M‐N‐C electrocatalysts only recently entered the CO2RR field (as opposed to Cu‐, Ag‐, or Au‐based nanostructures), they have been mainly characterized in static liquid environments, in which the reaction rate is significantly hampered by CO2‐dissolution/diffusion limitations. Therefore, the design of CO2RR electrolyzers for M‐N‐C electrocatalysts is addressed, and designs such as zero‐gap electrolyzers with anionic membranes and humidified CO2 gas feed at the cathode are highlighted.
A method for rejecting 3k‐th harmonics in bandpass 6N‐path filters
Authors: Hazrati Amin , Jalali Ali , Meghdadi Masoud , Babaei Bardia 
Published: January 2020

SummaryIn this paper, a method for 3
‐th (
) harmonics rejection in 6
‐path filters is proposed, and the related analysis is provided. Using a single‐ended‐input to differential‐output structure, the filter selectivity around even harmonics are also suppressed. Accordingly, a proof‐of‐concept band‐pass filter is designed, and postlayout simulations in the 90‐nm CMOS technology are carried out, which covers an input frequency range from 200 MHz to 1.2 GHz with a channel bandwidth of 10 to 15.5 MHz. The achieved third harmonic rejection at 1‐GHz local oscillator (LO) frequency is about 43 dB. Over the entire radio frequency (RF) range, the in‐band IIP3 and noise figure are better than
1.5 dBm and 5.3 dB, respectively. The power consumption of the analog circuitry is 21 mW from the 1.2‐V supply, whereas the digital clock generation circuitry consumes between 0.9 and 5.2 mW, depending on the center frequency of the filter.
Anabolic and lipolytic actions of beta2‐agonists in humans and antidoping challenges
Authors: Hostrup Morten , Jacobson Glenn A. , Jessen Søren , Lemminger Anders Krogh 
Published: January 2020

AbstractInhaled beta2‐adrenoceptor agonists (beta2‐agonists) are among the most used substances in competitive sports. The 2020 Prohibited List issued by the World Anti‐Doping Agency restricts use of all selective and non‐selective beta2‐agonists in‐ and out‐ of competition with few exemptions. Formoterol, salbutamol, and salmeterol are allowed by inhalation within defined dosing limits. These restrictions are in place because supratherapeutic use of beta2‐agonist has the potential to be anabolic and to enhance performance, as well as due to potential side effects. Despite substantial documentation that beta2‐agonists exert anabolic and lipolytic actions, these actions are not widely recognized. Furthermore, a common misconception is that the inhaled route does not exert these effects. However, given the high relative systemic bioavailability via the inhaled route, inhalation at high doses can also exert anabolic and lipolytic actions. In this review, we highlight the anabolic and lipolytic actions beta2‐agonists can exert, regardless of the type of beta2‐agonist and the route of administration. The doses needed to provide such effects are also associated with adverse effects and would in most cases be detected in routine doping control. Notwithstanding, the beta2‐agonist regulations are associated with some challenges and given their ability to induce muscle growth and to enhance performance, it is important to continue developing effective detection strategies to prevent potential misuse of beta2‐agonists while allowing treatment of asthmatic subjects without causing adverse side effects or ergogenic actions.
Assessment of agricultural energy consumption of Turkey by MLR and Bayesian optimized SVR and GPR models
Authors: Ceylan Zeynep 
Published: January 2020

AbstractAgricultural productivity highly depends on the cost of energy required for cultivation. Thus prior knowledge of energy consumption is an important step for energy planning and policy development in agriculture. The aim of the present study is to evaluate the application potential of multiple linear regression (MLR) and machine learning tools such as support vector regression (SVR) and Gaussian process regression (GPR) to forecast the agricultural energy consumption of Turkey. In the development of the models, widespread indicators such as agricultural value‐added, total arable land, gross domestic product share of agriculture, and population data were used as input parameters. Twenty‐eight‐year historical data from 1990 to 2017 were utilized for the training and testing stages of the models. A Bayesian optimization method was applied to improve the prediction capability of SVR and GPR models. The performance of the models was measured by various statistical tools. The results indicated that the Bayesian optimized GPR (BGPR) model with exponential kernel function showed a superior prediction capability over MLR and Bayesian optimized SVR model. The root mean square error, mean absolute deviation, mean absolute percentage error, and coefficient of determination (R2) values for the BGPR model were determined as 0.0022, 0.0005, 0.2041, and 0.9999 in the training phase and 0.0452, 0.0310, 7.7152, and 0.9677 in the testing phase, respectively. As a result, it can be concluded that the proposed BGPR model is an efficient technique and has the potential to predict agricultural energy consumption with high accuracy.
Frying stability of canola oil supplemented with ultrasound‐assisted extraction of Teucrium polium
Authors: Asadi Yegane , Farahmandfar Reza 
Published: January 2020

AbstractIn this study, antioxidant activity and protective effects of Teucrium polium extract in stabilizing of canola oil during frying were tested and compared to synthetic antioxidant, BHA. Total phenolic, α‐tocopherol, flavonoid, and condensed tannin content of Teucrium polium extracted by ethanol ultrasound‐assisted were 60.90 mg/g, 103.66 μg/ml, 4.36 mg/g, and 3.77 mg/g, respectively. Moreover, IC50 of the extract was 924.21 ppm. Canola oil samples containing 200, 600, and 1,000 ppm of the extract were heated at 180˚C for 30 hr and compared with BHA. Progress of oil oxidation was determined by measuring their peroxide value (PV), acid value (AV), iodine value (IV), carbonyl value (CV), color index (CI), conjugated diene value, and total polar compounds (TPC). The results showed that the extract was capable of retarding oil oxidation and deterioration significantly (p < .05) at all concentrations during frying. So, Teucrium polium extract can be used as natural antioxidant to retard oil oxidation.
Cortical electrophysiological evidence for individual‐specific temporal organization of brain functional networks
Authors: Shu Su , Qin Lang , Yin Yayan , Han Meizhen , Cui Wei , Gao Jia‐Hong 
Published: January 2020

AbstractThe human brain has been demonstrated to rapidly and continuously form and dissolve networks on a subsecond timescale, offering effective and essential substrates for cognitive processes. Understanding how the dynamic organization of brain functional networks on a subsecond level varies across individuals is, therefore, of great interest for personalized neuroscience. However, it remains unclear whether features of such rapid network organization are reliably unique and stable in single subjects and, therefore, can be used in characterizing individual networks. Here, we used two sets of 5‐min magnetoencephalography (MEG) resting data from 39 healthy subjects over two consecutive days and modeled the spontaneous brain activity as recurring networks fast shifting between each other in a coordinated manner. MEG cortical maps were obtained through source reconstruction using the beamformer method and subjects' temporal structure of recurring networks was obtained via the Hidden Markov Model. Individual organization of dynamic brain activity was quantified with the features of the network‐switching pattern (i.e., transition probability and mean interval time) and the time‐allocation mode (i.e., fractional occupancy and mean lifetime). Using these features, we were able to identify subjects from the group with significant accuracies (~40% on average in 0.5–48 Hz). Notably, the default mode network displayed a distinguishable pattern, being the least frequently visited network with the longest duration for each visit. Together, we provide initial evidence suggesting that the rapid dynamic temporal organization of brain networks achieved in electrophysiology is intrinsic and subject specific.