bluuebunny/crossref_metadata_2025_split huggingface dataset:
Novel CoFe2O4/CuBi2O4 heterojunction p–n semiconductor as visible‐light‐driven nanophotocatalyst for C (OH)–H bond activation
Authors: Ghobadifard Mahdieh , Radovanovic Pavle V. , Mohebbi Sajjad 
Published: January 2022

AbstractNanosized CoFe2O4/CuBi2O4 heterostructure was obtained by solvent‐free thermal processing and was characterized using a series of structural, physicochemical, and analytical techniques. The CuBi2O4 and CoFe2O4 nanoparticles demonstrated poor photoactivity due to their fast charge recombination and negligible visible light absorptivity, respectively. In contrast, the prepared heterojunction CoFe2O4/CuBi2O4 nanocomposite consisting of an array of nanocolumns approximately 20 nm in width displayed nearly twofold higher photocatalytic activity than CoFe2O4 or CuBi2O4 nanostructures alone toward the C (OH)–H bond activation. This nanocomposite exhibits photocatalytic efficiency as high as 98% with very high stability. The increased photocatalytic reactivity could be related to the effective Z‐scheme mechanism of photogenerated charge carrier separation between CoFe2O4 and CuBi2O4 in the nanocomposite, which reduces the electron–hole recombination. The results of this work provide a promising approach to the design and preparation of heterostructured photocatalysts for oxidation reactions.
Tuning the microstructure of SMA/CPVC membrane for enhanced separation performance by adjusting the coagulation bath temperature
Authors: Li Juan , Chen Guijing , Luo Shanshan , Pang Huixia , Gao Chengtao , Huang Shaowen , Liu Shan , Qin Shuhao 
Published: January 2022

AbstractIn this study, styrene‐maleic anhydride copolymer/chlorinated polyvinyl chloride composite membranes were prepared via a non‐solvent induced phase separation technique. Different porous morphologies of the composite membranes were obtained by controlling the temperature of coagulation bath water. With the coagulation bath temperature increasing, the porous morphology of membrane surface changed from co‐continuous pores to isolated‐round‐pores, and its evolution mechanism was elaborated. The average pore size of membranes surface increased from 17.27 to 48.72 nm, the pure water flux increased from 225.50 to 624.47 L m−2 h−1, and the rejection rate of Congo red and bovine serum albumin declined gradually with the increase of coagulation bath temperature, but the NaCl rejection was less than 1.0%. The surface segregation behavior of anhydride groups was affected by the phase separation process, which in turn affects the anti‐fouling performance of membranes. The composite membranes obtained at the coagulation bath temperature of 20 and 30°C had large surface segregation of anhydride groups and excellent anti‐fouling performance. The water flux recovery rate is higher than 90% and the irreversible pollution decline rate is about 5.0%. Meanwhile, the obtained membranes, especially the membrane fabricated at a coagulation bath temperature of 0°C, has good dye/NaCl salt separation performance and can be used for the pretreatment of textile wastewater.
Halochromic PLA/PEG as real‐time solution and vapor sensing
Authors: Alias Siti Amirah , Samsudin Hayati , Zubir Syazana Ahmad , Ku Marsilla Ku Ishak 
Published: January 2022

AbstractIn this study, halochromic sensor‐based poly (lactic acid) (PLA) and polyethylene glycol (PEG) film as real‐time sensing is successfully fabricated. Bromocresol purple (BCP) dye concentrations were varied (0.01 and 0.03 wt%/vol) in halochromic PLA/PEG film that changed its color from yellow to purple at a basic environment. The efficacy of the film with more BCP loading toward basic sensing was significant, where the material showed distinct color change with rapid response time. The color changes were proven by the CIE lab analysis, which showed that the initial and final colors of the indicator after interaction with PLA/PEG film are well above the limit for visual perception. The film response in base vapor was further determined by the amount of total volatile basic nitrogen (TVB‐N) released from mackerel. The mackerel was kept at room temperature (26 ± 1°C) for 24 h and chiller temperature (3 ± 1°C) for 11 days. The threshold of food spoilage indicated by the TVB‐N and the ∆E was reached at 18 h at room temperature when it started to deteriorate on Day 7 in the chiller. The findings suggest that a pH‐sensor made of the PLA/PEG/BCP films is suitable for multiple applications, particularly in base solution and vapor sensing detection.
Recent Advances on the Aqueous Phase Adsorption of Carbamazepine
Authors: Adeyanju Comfort A. , Ogunniyi Samuel , Selvasembian Rangabhashiyam , Oniye Mutiat M. , Ajala Oluwaseun J. , Adeniyi Adewale George , Igwegbe Chinenye Adaobi , Ighalo Joshua O. 
Published: January 2022

AbstractCarbamazepine (CBZ) is a pharmaceutical compound used in medical practice. Due to the ecotoxicological risk of its presence in the aqueous environment, researchers have been investigating its removal by adsorption technique. The aim of this study is to review the works done on the removal of CBZ from water by adsorption. Carbon‐based materials were the best types of adsorbent for CBZ uptake (> 200 mg g−1). Molecularly imprinted polymer (MIP) and carbon nanotubes (CNTs) showed especially good adsorption capacities. The key mechanisms of CBZ adsorption were π‐π interaction, electrostatic interactions, hydrogen‐bonding and hydrophobic interactions. Classical equilibrium isotherm models like Langmuir and Freundlich were always best‐fits and kinetics modelling was best‐fit to the pseudo‐second order model. The thermodynamics modelling of CBZ adsorption showed it was spontaneous and endothermic for most adsorbents. Methanol and acetone were especially effective for the desorption of CBZ from adsorbents and can achieve > 90 % removal even after 4–5 cycles. CBZ competes favorably in adsorption systems with other pharmaceutical species due to the advantages of the hydrophobic effect and molecular size.
Intracoronary pressures to predict myocardial viability in patients with ischemic left ventricular dysfunction
Authors: Marchese Nicola , Barbato Emanuele , Di Gioia Giuseppe , Stanislao Mario , Valle Guido , Copetti Massimiliano , Pellegrini Giorgia , Vigna Carlo 
Published: January 2022

AbstractTo investigate the role of intracoronary pressure parameters in the assessment of viability in the myocardium subtending a significant coronary stenosis. In patients with ischemic left ventricular dysfunction, the presence of myocardial viability is related to the expected benefits derived from coronary revascularization. Intracoronary pressure wire‐based measurements were performed in 64 coronary lesions of ≥50% stenosis severity of 59 patients with postischemic left ventricular dysfunction, segmental left ventricular wall motion abnormalities, and substantial viability in the myocardial territory subtending the investigated stenotic coronaries, defined as the percent summed rest score in the target territory (%SRStarget) ≤60% at the single‐photon emission tomography. Invasive pressure‐derived indexes like resting and hyperemic Pd/Pa, ΔPd/Pa, and %ΔPd/Pa (defined as the absolute difference and percent decrease between resting and hyperemic Pd/Pa respectively) were compared with %SRStarget. A significant correlation was found between ΔPd/Pa (Spearman's p: −0.760, p < 0.001) and %ΔPd/Pa (p: −0.733; p < 0.001) with %SRStarget. These results were confirmed after correction for potential confounders. According to %SRStarget median value, myocardial areas with high and low viability were compared: ΔPd/Pa and %ΔPd/Pa were significantly higher in areas with high viability (p < 0.001 for both). According to receiver operating characteristic curves, we identified two cut‐offs (ΔPd/Pa > 0.11 and %ΔPd/Pa > 15%) able to predict >80% viability with good sensitivity and specificity. Our study suggests that, in patients with postischemic left ventricular dysfunction and significant coronary stenosis, intracoronary pressures indexes like ΔPd/Pa and %ΔPd/Pa are able to predict the magnitude of downstream myocardial viability.
Long‐term prognostic value of dynamic function assessment of intermediate coronary lesion with computational physiology
Authors: Guan Changdong , Geng Liang , Zhang Rui , You Jieyun , Xie Lihua , Wang Xingxu , Wan Qing , Xu Bo , Dou Kefei , Zhang Qi 
Published: January 2022

AbstractThis study sought to investigate the dynamic functional changes of coronary intermediate lesions using quantitative flow ratio (QFR) and its implication on long‐term clinical outcomes. Physiology‐guided percutaneous coronary intervention in patients with angiographic intermediate lesions has been associated with favorable outcomes. This study consecutively enrolled 1130 patients with deferred intermediate lesions at baseline angiography and subsequently received second‐time angiography between 9 months and 2 years later from two centers in China. The functional changes of intermediate lesions at angiographic follow‐up (ΔQFR) were defined as (baseline QFR—follow‐up QFR)/years. The primary outcome was vessel‐oriented composite endpoint (VOCE), defined as the composite of vessel‐related cardiac death, vessel‐related myocardial infarction (MI), and ischemia‐driven target vessel revascularization (ID‐TVR) at angiographic follow‐up for up to 5 years. Retrospective QFR assessment was available in 820 patients (996 intermediate lesions). QFR ≤ 0.80 at second‐time angiography was associated with significantly higher 5‐year VOCE (41.9% vs. 13.4%, p < 0.0001). In 777 intermediate lesions with baseline QFR > 0.80, mean ΔQFR was 0.03 ± 0.07 (median: 0.006; Q1: 0; and Q3: 0.04). The optimal cutoff of ΔQFR for predicting the primary outcome was 0.03 (area under the curve [AUC]: 0.68). The cumulative event rate of VOCE in patients with ΔQFR ≥ 0.03 was significantly higher than in those with ΔQFR < 0.03 (33.8% vs. 12.2%, p < 0.0001), driven by higher vessel‐related MI and ID‐TVR. The ΔQFR was a useful tool for evaluating the dynamic functional change of deferred intermediate lesions, as it demonstrates good prognostic value for long‐term target vessel‐related adverse events.
Routine use of fluoroscopic and real‐time transthoracic echocardiographic guidance to ensure safety of right ventricular endomyocardial biopsy in a low‐volume center
Authors: Hassan Karim , Kyriakakis Charles , Joubert Lloyd , Van Zyl Gert , Zaharie Dan , Doubell Anton , Herbst Philip 
Published: January 2022

AbstractTo determine whether the routine use of real‐time transthoracic echocardiographic (TTE) guidance in addition to fluoroscopy would ensure the safety of right ventricular endomyocardial biopsy (RV EMB) in a low‐volume center. RV EMB is a valuable tool and plays an important role in the diagnosis and management of patients with myocardial diseases. However, it has yet to gain widespread acceptance due to its perceived low diagnostic yield and concerns regarding its invasive nature and potential complications. Although the safety of EMB when performed by experienced operators in high‐volume centers is well established, the complication rate in low‐volume centers is less well defined but appears to be higher. This is a retrospective single‐center cross‐sectional study. Consecutive adult patients who underwent RV EMB procedures at Tygerberg Hospital (Cape Town, South Africa) between August 2017 and December 2020 were included. RV EMB was successfully performed in 85 patients. No major complications were reported. Five (5.88%) patients experienced minor complications: three transient right bundle branch blocks and two hemodynamically stable ventricular tachycardia. A definitive biopsy diagnosis was made in 37 (43.54%) patients. The average procedural time was 27.06 min, which equated to 4.09 min per specimen taken. The routine use of real‐time TTE guidance in addition to fluoroscopy ensured the safety of RV EMB in a low‐volume center without unnecessarily prolonging procedural time.
Transcatheter aortic valve implantation in pure aortic regurgitation: Hemodynamic and echocardiographic findings in bioprosthesis vs. native valve
Authors: Paraggio Lazzaro , Burzotta Francesco , Graziani Francesca , Aurigemma Cristina , Romagnoli Enrico , Pedicino Daniela , Locorotondo Gabriella , Mencarelli Erica , Lillo Rosa , Bruno Piergiorgio , Laezza Domenico , Giambusso Nicole , Lombardo Antonella , Trani Carlo 
Published: January 2022

ABSTRACTObjectiveThe objective of this study is to compare hemodynamic and echocardiographic findings between valve‐in‐valve (VIV) and native‐valve (NV) patients submitted to transcatheter aortic valve implantation (TAVI) due to pure aortic regurgitation (AR).BackgroundPatients with severe AR are surgically treated with variable postinterventional left‐ventricular (LV) “reverse remodeling.” TAVI might be considered in selected AR patients.MethodsTwenty‐eight patients with pure severe AR caused by either degenerated bioprosthesis or NV disease were successfully treated by TAVI at our institution. LV catheterization before and after TAVI and echocardiography before, after (24–72 h), and at follow‐up (3–12 months) were performed.ResultsBaseline clinical, hemodynamic, and echocardiographic characteristics were comparable between the two study groups, except for a younger age, higher proto‐diastolic LV pressure, and higher LV end‐systolic diameter in the NV group. At catheterization, an immediate hemodynamic impact of TAVI in both groups was noticed, with a trend toward better postprocedural residual regurgitation index and significantly lower LV dP/dT values (666.0 ± 177.9 vs. 883.5 ± 259.7 mmHg/s, p = 0.04) in VIV. At echocardiography, both NV and VIV patients showed favorable (early and sustained) post‐TAVI echocardiographically detectable reverse remodeling. VIV patients also showed more pronounced early reduction in indexed LV end‐diastolic volume (68.1 ± 27.4 vs. 86.5 ± 28.9 ml/m2 in VIV, p < 0.001 and 81.0 ± 29.0 vs. 95.2 ± 37.8 ml/m2 in NV, p = 0.043).ConclusionsSuccessful TAVI induces a striking hemodynamic impact with major structural (reverse remodeling) consequences in patients with pure AR caused by both bioprosthesis degeneration or NV disease. In the immediate postrelease phase, VIV patients might exhibit a more pronounced early LV contractile and structural benefit.
Impact of diabetes on 1‐year clinical outcome in patients undergoing revascularization with the BioFreedom stents or the Orsiro stents from the SORT OUT IX trial
Authors: Hansen Kirstine Nørregaard , Maeng Michael , Raungaard Bent , Engstrøm Thomas , Veien Karsten Tange , Kristensen Steen Dalby , Ellert‐Gregersen Julia , Jensen Svend Eggert , Junker Anders , Kahlert Johnny , Jakobsen Lars , Christiansen Evald Høj , Jensen Lisette Okkels 
Published: January 2022

AbstractThis sub‐study of the SORT OUT IX trial sought to compare clinical outcomes between patients with diabetes randomized to implantation of either the polymer‐free biolimus A9‐coated BioFreedom stent (BF‐BES) or the ultra‐thin strut, biodegradable polymer sirolimus‐eluting Orsiro stent (O‐SES). Patients with diabetes have an increased risk of target lesion failure (TLF) after percutaneous coronary intervention (PCI). The impact of different stent types in patients with diabetes is still discussed. A total of 607 of the 3151 patients (19.3%) enrolled in the SORT OUT IX study had diabetes. Randomization was stratified by patients with/without diabetes; 304 received BF‐BES and 303 O‐SES. The primary endpoint was TLF, which was a composite of cardiac death, myocardial infarction (not related to other than the index lesion) and target lesion revascularization (TLR) within 1 year. After 1 year, patients with diabetes had higher TLF (7.2% vs. 3.7%, incidence rate ratio [IRR]: 1.65; 95% confidence interval [CI]: 1.08–2.50), than patients without diabetes. TLF did not differ significantly between BF‐BES and O‐SES in patients with diabetes (8.2% vs. 6.3%, IRR: 1.17; 95% CI: 0.63–2.20). In patients with diabetes, cardiac death occurred in 2.3% of BF‐BES and in 3.6% of O‐SES (IRR: 0.58; 95% CI: 0.23–1.45) and TLR occurred in 5.3% and 2.3% of BF‐BES and O‐SES, respectively (IRR: 2.12; 95% CI: 0.81–5.56). Definite stent thrombosis rates of 1.3% were found in both stent types. Patients with diabetes had higher 1‐year TLF rate after PCI compared to patients without diabetes, whereas TLF did not differ significantly between the two stent types BF‐BES and O‐SES in patients with diabetes.
Rare localization of tongue vascular lesion detected by multi‐parametric magnetic resonance imaging
Authors: Gilardi Antonio , Ralli Massimo , Colizza Andrea , Di Stadio Arianna , Messineo Daniela , Riminucci Mara , Corsi Alessandro , Greco Antonio , de Vincentiis Marco 
Published: January 2022

AbstractHemangiomas are developmental vascular abnormalities that are common in the head and neck (60%), rare in the oral cavity, and uncommon in the tongue. A patient performed a multi‐parametric MRI, which characterized the lesion of his tongue, providing relevant information for diagnostic, therapeutic orientation, and realization of slight aggressive surgery with consequent excellent recovery.
Hydrogenation of CO2 over Cobalt‐Lanthanide Bimetallic Oxide Nanofibers
Authors: Ferreira Ana C. , Martinho Joana F. , Branco Joaquim B. 
Published: January 2022

AbstractCobalt‐lanthanide bimetallic oxide nanofibers (5Co3O4.3LnCoO3, Ln=La, Pr; 4Co3O4.Ln2O3, Ln=Sm, Gd, Dy, Yb and 2Co3O4.CeO2) were prepared by electrospinning technique and for the first time evaluated as catalysts for the hydrogenation of CO2. Depending on the lanthanide, the reaction products are different: lighter lanthanides (La, Pr, Sm and Gd) produce mainly CO and are more active to reverse water gas shift (RWGS), whereas the catalysts with Ce, Dy and Yb are more active and selective to methane. Lanthanide intrinsic properties such as ionic radii and basicity strongly correlate with the nanofibers’ catalytic performance: lower lanthanide ionic radii and higher basicity favour the catalysts activity. Moreover, the bimetallic oxide nanofibers catalytic behavior also seems to point to the existence of a synergetic interaction between cobalt and lanthanide. The cobalt‐lanthanide bimetallic oxides present a high deactivation resistance for at least 60 h in the gaseous stream, which is an advantage for any catalytic application. Compared with a commercial catalyst (5wt.% Rh/Al2O3) tested in the same conditions, cobalt‐ytterbium, dysprosium and cerium bimetallic oxide nanofibers present an activity 5 to 13 times higher at 350 °C.
Process Technology for the Removal of Cr(VI) from Wastewater Using Pig Iron Sludge
Authors: Saravanan Karunakaran , Ganesan Surendran , Kavitha Subramanian , Jayakumar Chinnakannu , Donipathi Mogili Reddy Prasad , Baral Saroj Sundar 
Published: January 2022

AbstractThe usage of pig iron sludge nanoparticles as adsorbent was explored to remove Cr(VI) from effluents. Batch sorption was administered to check the effect of various parameters on the sorption method, namely, pH, interaction time, as well as Cr(VI) concentration and dosage. The adsorption potential was related with the parameters. An inovative flow chart was proposed by using this sludge, which is a byproduct from the pig iron manufacturing industries, as adsorbent for the treatment of Cr(IV)‐contaminated water, and then this sludge is recycled for drying followed by filtration. The adsorbed Cr(VI) will be useful for producing steel in a blast furnace. The sorption followed a second‐order mechanism and the experimental data obeyed the Langmuir adsorption isotherm. Surface diffusion was found to be the sluggish step and thus is the rate‐limiting step.
Simulations to Cover the Waterfront for Iron Oxide Catalysis
Authors: Snir Nadav , Caspary Toroker Maytal 
Published: January 2022

AbstractHematite has been widely studied for catalytic water splitting, but the role of the interactions between catalytic sites is unknown. In this paper, we calculate the oxygen evolution reaction free energies and the surface adsorption distribution using a combination of density functional theory and Monte Carlo simulations to “cover the waterfront,” or cover a wide range of properties with a simulation of the hematite surface under working conditions. First, we show that modeling noninteracting catalytic sites provides a poor explanation of hematite's slow reaction kinetics. The interactions between the catalytic site may hinder catalysis through the strong interactions of *OH2 and *OOH intermediates, which cause the reaction to revert back to the *O intermediate. Hence, neighboring interactions may be a possible reason for the abundant, experimentally observed *O intermediate on the surface. This study demonstrates how neighboring sites impact the energy required for catalytic steps, thus providing new avenues to improve catalysis by controlling neighboring site interactions.
Raman and Photoluminescence Spectroscopic Studies on Structural Disorder in Oxygen Deficient Gd2Ti2O7‐δ Single Crystals
Authors: Suganya M. , Ganesan K. , Vijayakumar P. , Gill Amirdha Sher , Srivastava S. K. , Singh Ch. Kishan , Sarguna R. M. , Ajikumar P. K. , Ganesamoorthy S. 
Published: January 2022

AbstractRaman and photoluminescence spectroscopic studies on oxygen vacancy‐induced structural disorder in Gd2Ti2O7‐δ single crystals grown by optical floating zone technique under argon atmosphere are reported. The oxygen vacancies in Gd2Ti2O7‐δ wafers decrease with thermal annealing in air atmosphere. The full width at half maximum of X‐ray diffraction rocking curve decreases from 245 to 157 arcsec and the optical transmittance increases from 23% to 87% (at 1000 nm) upon post growth thermal annealing. Raman spectroscopic studies reveal a monotonic increase in intensity of O–Gd–O (Eg) and Ti–O (A1g) stretching modes with thermal annealing. Since these modes are associated with modulation of oxygen x parameter which is sensitive to Ti–O octahedron distortion, the increase in Raman intensity indicates an improvement in structural ordering of oxygen sub‐lattice in Gd2Ti2O7‐δ. Moreover, the photoluminescence studies also corroborate the Raman analysis in terms of reduction of structural defects associated with oxygen vacancies as a function of thermal annealing. This study demonstrates the effectiveness of using Raman spectroscopy to probe the structural disorder in Gd2Ti2O7‐δ crystals.
Historical grain yield genetic gains in Norwegian spring wheat under contrasting fertilization regimes
Authors: Mróz Tomasz , Dieseth Jon Arne , Lillemo Morten 
Published: January 2022

AbstractSpring wheat is currently dominating wheat production in Norway. The introduction of combine harvesting in the 1950s spurred breeding efforts to improve lodging and preharvest sprouting resistance, and to integrate good breadmaking quality in the locally adapted germplasm. Release of landmark cultivars Runar and Reno in the 1970s revitalized the country's production and marked the onset of modern wheat cultivation in Norway. Since that time, new cultivars have been developed but little is known about the genetic basis of the achieved yield gains. We collected 21 representative cultivars released since 1972 in Norway and tested them in a multiyear field trial including two fertilization rates: 75 and 150 kg ha–1 N. We assessed grain yield, plant height, heading, maturity, length of grain filling period, grain protein content, protein yield, aboveground biomass, harvest index, grain weight, test weight, grains per spike, grains per square meter, and spikes per square meter and their response to fertilization. We document an annual increase in grain yield of 17.8 kg ha–1 (0.34%), at both rates of N fertilization. None of the traits exhibited significant genotype × management interaction. Wheat breeding has led to the development of higher‐yielding cultivars with higher protein yield that mature later, have a prolonged grain‐filling period, and produce more grains per spike and grains per unit area.