bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Newly Designed Water Soluble Uranyl‐Salophen Complex for Anion Recognition
Authors: Forte Gianpiero , Maglione Maria S. , Tulli Ludovico G. , Fantoni Alessia , Dalla Cort Antonella 
Published: August 2021

AbstractA novel water‐soluble uranyl‐salophen (salophen=N,N‘‐disalicylidene‐o‐phenylenediaminate) complex was obtained. Solubility was achieved in aqueous methyl‐β‐cyclodextrin solutions, taking advantage of the host‐guest interactions established with the adamantyl moieties present on the ligand skeleton. Such an approach facilitates the synthesis of the receptor and the purification processes and, in perspective, can be definitely applicable to other molecular scaffolds. UV/Vis titration experiments demonstrate that the capacity of the uranyl‐salophen core to behave as a receptor for anions is retained in water and appears comparable with that previously reported for other water‐soluble uranyl‐salophen systems. Hence the presence of cyclodextrins does not interfere with molecular recognition processes.
Omega‐3 fatty acids for the prevention of atherosclerotic cardiovascular disease
Authors: Barry Arden R. , Dixon Dave L. 
Published: August 2021

AbstractMarine‐derived omega‐3 fatty acids, docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), are a type of polyunsaturated fatty acids with many purported beneficial health effects including the prevention of atherosclerotic cardiovascular disease (ASCVD) events. Omega‐3 fatty acid intake may be supplemented via dietary sources, as well as prescription or non‐prescription products. Omega‐3 fatty acids have been shown to reduce serum triglycerides, but there remains ongoing debate regarding the effect of omega‐3 fatty acids on major adverse cardiovascular events in patients with established, or at risk of, ASCVD. Recent evidence from randomized, placebo‐controlled trials has demonstrated that low‐dose (1 g daily or less) omega‐3 fatty acids (DHA and EPA) do not reduce cardiovascular events or death in patients with or without established ASCVD. Contrarily, the REDUCE‐IT trial demonstrated that a purified form of EPA ethyl esters (icosapent ethyl) at 4 g daily reduced cardiovascular events and death in patients with ASCVD (or diabetes and multiple cardiovascular risk factors) and elevated triglycerides on background statin therapy. However, 4 g daily of omega‐3 carboxylic acids (DHA and EPA) did not show a cardiovascular benefit in the STRENGTH trial, which enrolled a similar population. The explanation for this observed discrepancy remains a source of contention and discourse. For now, icosapent ethyl has the most compelling evidence to support a cardiovascular benefit and should be considered in select patients who meet the REDUCE‐IT criteria. Furthermore, alternative versions of omega‐3 fatty acids should not be considered equivalent to icosapent ethyl. Patients taking an omega‐3 fatty acid supplement should be monitored for potential adverse effects, including gastrointestinal disorders or bleeding, in addition to a possible increased risk of atrial fibrillation.
How rigid are conjugated non‐ladder and ladder polymers?
Authors: Cao Zhiqiang , Leng Mingwan , Cao Yirui , Gu Xiaodan , Fang Lei 
Published: August 2021

AbstractPersistence length is commonly used to quantitatively describe the chain rigidity of macromolecules, which represents an important structural parameter governing many physical properties of polymers. Although the mathematical models and experimental measurements on the chain rigidity of conventional single stranded polymers have been well explored and documented, those of the more rigid yet highly intriguing multiple stranded polymers, especially conjugated ladder polymers, are yet not well established. This article introduces the fundamental concepts on macromolecular chain rigidity, as well as the corresponding experimental methods, models, and simulations. Subsequently, representative examples of works done on the chain rigidity of nonladder conjugated polymers and conjugated ladder polymers are reviewed. Last but not least, it provides outlooks on the challenges with respect to the less‐investigated chain rigidity of conjugated ladder polymers, including new models to describe and predict chain conformation, synthetic control on structural defects, and insights into the correlation of rigidity and applications.
Challenges experienced and resources identified by young to midlife couples 1–3 years post‐cancer diagnosis
Authors: Lyons Karen S. , Flatley Christine , Gorman Jessica R. , Hanan Diana M. , Hayes‐Lattin Brandon 
Published: August 2021

AbstractObjectiveThe purpose of this study was to explore what young to midlife couples viewed as their strengths as a couple and the greatest challenges in their experience with cancer 1–3 years post‐diagnosis.MethodsWe used qualitative content analysis to extract common themes from open‐ended questions from 42 cancer survivors and their partners (aged 27–58). Patterns of themes by age and gender of the survivor were also explored.ResultsCouples described both positive and negative impacts of the cancer experience: (1) strengthened the relationship, bringing couples closer together; (2) brought emotional strain to many areas of life, especially for partners; (3) created positive changes in lifestyle and new priorities for the couple; (4) created strain in the couple's relationship and intimacy; and (5) altered the role of family in supporting the couple. Couples also described four key strengths in dealing with the cancer experience: (1) drawing strength from shared love and mutuality; (2) communicating openly, even about the difficult stuff; (3) working together as a team to support each other; and (4) drawing strength from shared values and goals. Couples reported unmet needs related to the emotional and relational strain of the cancer experience, managing longer term survivor symptoms, fertility and physical intimacy, and lack of support or attention to the partner who often assumed the role of care partner.ConclusionsThemes are discussed in light of current dyadic concepts and importance of couple‐based interventions.
Crystal structure of aspartyl dipeptidase from Xenopus laevis revealed ligand binding induced loop ordering and catalytic triad assembly
Authors: Kumar Ashwani , Singh Rahul , Ghosh Biplab , Makde Ravindra D. 
Published: August 2021

AbstractGene encoding aspartyl dipeptidase from Xenopus levies (PepExl) is upregulated by thyroid hormone and is proposed to play a significant role in resorption of tadpole tail during metamorphosis. However, the importance of peptidase activity for the resorption of the tail remain elusive. Here we report the crystal structures of first eukaryotic S51 peptidase, PepExl, in its ligand‐free and Asp‐bound states at 1.4 and 1.8 Å resolutions, respectively. The active site is located at dimeric interface and the catalytic triad is found to be dissembled in ligand‐free and assembled in Asp‐bound state. Structural comparison and molecular dynamic simulations of ligand‐free and Asp‐bound states shows that distinct loop (loop‐A) plays an important role in active site shielding, substrate binding and enzyme activation. This study illuminates the Asp‐X dipeptide binding in PepExl is associated with ordering of the loop‐A and assembly of residues of catalytic triad in active conformation for enzymatic activity.
Time‐discretizations of differentiators: Design of implicit algorithms and comparative analysis
Authors: Mojallizadeh Mohammad Rasool , Brogliato Bernard , Acary Vincent 
Published: August 2021

AbstractA complete review of the known differentiators and their time‐discretizations have been addressed in this study. To resolve the drawbacks of the explicit (forward Euler) discretization, which is commonly utilized in sliding‐mode‐based differentiators, implicit time discretization methods are proposed to handle the set‐valued functions. The proposed schemes are supported by some analytical results to show their crucial properties, for example, finite‐time convergence, exactness, invariant sliding‐surface, chattering elimination, insensitivity to the gains during the sliding‐phase, and the well‐posedness. The causal implementation of the proposed implicit schemes has been addressed clearly and supported by flowcharts. Semi‐implicit schemes are also presented to provide a compromise between the performance and the ease of implementation. Finally, an exhaustive comparison is made using numerical experiments among 25 different state‐of‐the‐art differentiators to evaluate the behaviors of the differentiators facing the noise and initial error. Realistic conditions are considered in the simulations to provide useful information based on practical conditions. General conclusions are that implicit discretizations can supersede explicit and semi‐implicit ones.
Improvement of Gas Sensing of Uniform Ag3PO4 Nanoparticles to NH3 under the Assistant of LED Lamp with Low Power Consumption at Room Temperature
Authors: Shao Xingyan , Wang Shuo , Hu Leqi , Liu Tingting , Wang Xiaomei , Yin Guangchao , Zhou Tong , Rajan Ramachandran , Jia Fuchao , Liu Bo 
Published: August 2021

AbstractLight‐driven semiconductor gas sensors are attracting considerable research attention in the recent past. Among them, silver phosphate (Ag3PO4) material has excellent photocatalytic activities due to its high separation efficiency of electron‐hole pairs under visible light. Inspired by the above point of view, in this study, Ag3PO4 nanoparticles were successfully synthesized via simple precipitation method. The microstructure of Ag3PO4 nanoparticles were characterized by scanning electron microscopy (SEM). The crystalline phase and the composition of the elements and the chemical bonding states of the material were characterized by X‐ray diffraction (XRD) and X‐ray photoelectron spectroscopy (XPS), respectively. Then the gas sensing performance of Ag3PO4 to ammonia (NH3) was systematically explored at room temperature under the illumination of LED lamp and the same was compared with the dark condition as well. Interestingly, the response value to NH3 under LED lamp was 30 % higher than that of dark condition and the detection limit was found to be as low as 10 ppm at room temperature. This can be ascribed to the generation of more oxygen species under visible light, which benefitted for enhancing the gas sensing performance of the sensor. Surprisingly, Ag3PO4 sensor exhibited superior selectivity to NH3 under mixed target gases, which can be attributed to the lone pair electrons of NH3 that tend to coordinate the empty orbitals of silver atom.
Exploring the Corrosion Inhibition Properties of an Anionic Gemini Surfactant Based on an Ethylenediaminetetraacetic Acid Derivative on AZ31 Alloy
Authors: Acharya Gururaj M. , Shetty Nityananda A. 
Published: August 2021

AbstractNovel sodium 2,2′‐(7,16‐dihexyl‐8,15‐dioxo‐7,10,13,16‐tetraazadocosane‐10,13‐diyl)diacetate was prepared by treating ethylenediaminetetraacetic acid dianhydride with N‐dihexylamine. The surfactant was used as a corrosion inhibitor on AZ31 alloy. FT‐IR spectroscopy, NMR spectroscopy and LC‐MS techniques were used to characterize the synthesized anionic inhibitor. The theoretical studies, performed by using the DFT simulations revealed in‐depth information on the frontier molecular orbitals and electronic properties of the inhibitor. Potentiodynamic polarization and electrochemical impedance spectroscopy methods were used to determine the corrosion inhibition ability of the synthesized surfactant. The adsorption of the surfactant on the surface of AZ31 Mg alloy obeyed Langmuir isotherm with predominantly physical adsorption and partial chemisorption. SEM‐EDX and XPS were used to understand the surface morphologies of the corroded AZ31 alloy. The quantum chemical simulations were used to get the correlation between their structural, molecular geometry, and experimental results.
Integrated Constructed Wetland‐Microbial Fuel Cell using Biochar as Wetland Matrix: Influence on Power Generation and Textile Wastewater Treatment
Authors: Sonu Kumar , Sogani Monika , Syed Zainab 
Published: August 2021

AbstractThe present study aims at integrating Constructed Wetland using biochar as matrix with Microbial Fuel Cell (CW‐MFC) and evaluating its effect on textile wastewater (TW) treatment in the form of removal of COD, Color and TDS along with Bioelectricity generation. Two vertical down flow systems of CW‐MFC were investigated for TW treatment and system reusability (with and without corn cob biochar) in batch mode with retention time of 10 days for 10 cycles. The performance of CW‐MFC with the corn cob biochar (CW‐MFC−A) was better than the CW‐MFC without corn cob biochar (CW‐MFC−B) in terms of parameters of TW treatment, bioelectricity generation and matrix reusability. The maximum power density, COD removal efficiency, decolorization efficiency and TDS reduction as obtained with CW‐MFC−A (102.08 mW/m2; 83 %; 90 %; 84 % respectively) were higher in comparison to the values obtained in CW‐MFC−B (78.24 mW/m2; 66 %; 65 %; 67 % respectively). Furthermore, the germination assessment studies using the treated effluent from CW‐MFC−A resulted in 100 % germination of Vigna radiata seeds indicating the usefulness of corn cob biochar as wetland matrix for treatment of wastewaters.
L. Lactis Subsp. Lactis of Cheese Origin Based Microbial Fuel Cell
Authors: Avci Okan , Büyüksünetçi Yudum T. , Güley Ziba , Anik Ülkü 
Published: August 2021

AbstractIn this work, Lactococcus lactis subsp. lactis DLP27 (L .lactis) strain isolated from a traditional Turkish raw milk cheese, Divle Obruk Cheese, was used as a biocatalyst on the bioanode combined with a platinum cathode to fabricate a Nafion membrane based double compartment microbial fuel cell (MFC). Graphene‐gold‐platinum hybrid nanomaterial was used as modifier in L. lactis immobilized carbon felt based bioanode. Developed Nafion membrane based double compartment MFC characteristics were inspected by using optimized bioanode. In consequence, an open‐circuit voltage of 0.282 V, a maximum current density of 59.52 μA/cm2 and a maximum power density of 2.12 μW/cm2 were achieved with excellent lifetime of 49 days with developed MFC system.
Bi2S3–In2S3 Heterostructures for Efficient Photoreduction of Highly Toxic Cr6+ Enabled by Facet‐Coupling and Z‐Scheme Structure
Authors: Wang Linjuan , Karuturi Siva , Zan Ling 
Published: August 2021

AbstractThe construction of Z‐scheme photocatalyst materials mimicking the natural photosynthesis system provides many advantages, including increased light harvesting, spatially separated reductive and oxidative active sites and strong redox ability. Here, a novel Bi2S3 nanorod@In2S3 nanoparticle heterojunction photocatalyst synthesized through one‐pot hydrothermal method for Cr6+ reduction is reported. A systematic investigation of the microstructural and compositional characteristics of the heterojunction catalyst confirms an intimate facet coupling between (440) crystal facet of In2S3 and (060) crystal facet of Bi2S3, which provides a robust heterojunction interface for charge transfer. When tested under visible‐light irradiation, the Bi2S3–In2S3 heterojunction photocatalyst with 15% Bi2S3 loading content achieves the highest Cr6+ photoreduction efficiency of nearly 100% with excellent stability, which is among the best‐reported performances for Cr6+ removal. Further examination using optical, photoelectrochemical, impedance spectroscopy, and electron spin resonance spectroscopy characterizations reveal greatly improved photogenerated charge separation and transfer efficiency, and confirm Z‐scheme electronic structure of the photocatalyst. The Z‐scheme Bi2S3–In2S3 photocatalyst demonstrated here presents promise for the removal of highly toxic Cr6+, and could also be of interest in photocatalytic energy conversion.
Cobalt Selenide Hollow Polyhedron Encapsulated in Graphene for High‐Performance Lithium/Sodium Storage
Authors: Jiang Ying , Xie Man , Wu Feng , Ye Zhengqing , Zhang Yixin , Wang Ziheng , Zhou Yaozong , Li Li , Chen Renjie 
Published: August 2021

AbstractOwing to the high specific capacities, high electrochemical activity, and various electronic properties, transition metal selenides are considered as promising anodes for lithium‐ and sodium‐ion storage. However, poor electronic conductivity and huge volume expansion during cycling are still responsible for their restricted electrochemical performance. Herein, CoSe hollow polyhedron anchoring onto graphene (CoSe/G) is synthesized by self‐assembly and subsequent selenization. In CoSe/G composites, the CoSe nanoparticles, obtained by in situ selenization of metal–organic frameworks (MOFs) in high temperature, are distributed among graphene sheets, realizing N element doping, developing robust heterostructures with a chemical bond. The unique architecture ensures the cohesion of the structure and endorses the reaction kinetics for metal ions, identified by in situ and ex situ testing techniques, and kinetics analysis. Thus, the CoSe/G anodes achieve excellent cycling performance (1259 mAh g−1 at 0.1 A g−1 after 300 cycles for lithium storage; 214 mAh g−1 at 2 A g−1 after 600 cycles for sodium storage) and rate capability (732 mAh g−1 at 5 A g−1 for lithium storage; 290 mAh g−1 at 5 A g−1 for sodium storage). The improved electrochemical performance for alkali‐ion storage provides new insights for the construction of MOFs derivatives toward high‐performance storage devices.
Highly Sensitive Ultraviolet and Visible Wavelength Sensor Composed of Two Identical Perovskite Nanofilm Photodetectors
Authors: Liang Feng‐Xia , Fan Rong‐Yu , Li Jing‐Yue , Fu Can , Jiang Jing‐Jing , Fang Ting , Wu Di , Luo Lin‐Bao 
Published: August 2021

AbstractThis work reports the design of a wavelength sensor composed of two identical perovskite (FA0.85Cs0.15PbI3) photodetectors (PDs) that are capable of discriminating incident wavelength in a quantitative way. Due to strong wavelength‐dependent absorption coefficient, the penetration depth of the photons in the FA0.85Cs0.15PbI3 nanofilms increases with the increasing wavelength, leading to a gradual decrease of photo‐generated current for PD1, but an increase of photocurrent in PD2, according to the theoretical simulation of Technology Computer Aided Design. This special evolution of photo‐generated current as a function of wavelength facilitates the quantitative determination of the wavelength since the current ratio of both PDs monotonously decreases with the increase of wavelength from 265 to 810 nm. The average absolute error and the average relative error are estimated to be 7.6 nm and 1.68%, respectively, which are much better than other semiconductors materials‐based wavelength sensors previously reported. It is believed that the present perovskite film‐based wavelength sensor will have potential application in the future color/spectrum optoelectronic devices.
Real time flood disaster monitoring based on energy efficient ensemble clustering mechanism in wireless sensor network
Authors: Wilson Allan Jenose , Radhamani Aravindhan Sarojini 
Published: August 2021

AbstractIn this article, energy efficient ensemble clustering method (EECM) with black widow optimization (EECM‐BWO) algorithm is proposed for effective data transmission with the help of real time flood disaster monitoring wireless sensor network (WSN). Initially, unified scalable ensemble clustering algorithm based on ensemble generation and consensus function is proposed for selecting the optimal routing path among the node using BWO algorithm. Then, biologically inspired routing black widow spiders optimization algorithm is proposed to trade off the nodes energy level, self‐organization, and self‐configuration in the WSN. The simulation is performed using NS2 simulator for validating the performance of the proposed EECM‐BWO method. Here, in node, low delay achieves 24.07%, 72.58%, 51.36%, 81.75%, 77.74%, high packet delivery ratio achieves 70.83%, 53.93%, 90.23%, 43.58%, 24.58%, low packet drop attains 77.93%, 72.76%, 61.56%, 51.87%, 34.35%, low energy consumption attains 75.9%, 52.94%, 65.81%, 58%, 41.2% compared with existing energy‐efficient clustering approach consolidated game theory as well as dual‐cluster‐head mode for WSNs energy‐aware clustering by cuckoo optimization approach (EECM‐COA), energy‐aware clustering‐based routing using multi‐path reliable transmission with routing and control board (EECM‐RCB‐MRT), adaptive repair algorithm with temporally ordered routing algorithms for flood control strategy (EECM‐AR‐TORA‐FCS), passive multi‐hop clustering algorithm (EECM‐PMC), dynamic source routing protocol based on genetic algorithm‐bacterial foraging optimization (DSR‐GA‐BFO).
Puget Sound Chum Salmon Growth Linked to Competitor Abundance, Climate Indices, and Copepod Species Richness
Authors: Anderson Austin J. , Claiborne Andrew M. , Agha Mickey , Litz Marisa N. C. 
Published: August 2021

AbstractAn improved understanding of the mechanisms influencing productivity of fish populations is critical for accurately determining harvest rates and identifying years of conservation concern. Here we reconstruct yearly scale growth of three Puget Sound (PS) Chum Salmon Oncorhynchus keta stocks over 16 brood years (1997–2012) to better understand how variation in marine growth may be related to environmental factors, intra‐ and interspecific competition, and stock productivity. Generalized additive mixed models identified copepod species richness in the northern California Current and the abundance of PS Pink Salmon O. gorbuscha and Chum Salmon as strong predictors of first‐year growth, the latter indicative of density‐dependent effects as the abundance of local competitors (Pink and Chum salmon) increased. Second‐year growth was negatively related to the Aleutian Low–Beaufort Sea Anticyclone (ALBSA), a recently defined metric of the Aleutian Low, and showed a nonlinear positive to negative relationship with sea surface temperature in the Gulf of Alaska. Puget Sound Chum and Pink Salmon abundances were also significantly related to second‐year growth but did not suggest density‐dependent effects like those observed in ocean year 1. Third‐year growth was closely related to large‐scale climate indicators, demonstrating a nonlinear negative to positive relationship with the North Pacific Gyre Oscillation, a negative relationship with ALBSA, and a negative relationship with North Pacific Pink Salmon abundance when catch statistics indicated that abundance was high. Models indicated that PS Chum Salmon stock productivity (recruits per spawner) was positively correlated with back‐calculated first‐year growth and negatively correlated with second‐ and third‐year growth, suggesting that for brood years whose surviving adults experienced rapid early marine growth, there were cohort survival benefits. As new relationships between large‐scale indicators and Pacific salmon stocks are identified, incorporating these indicators into forecasting efforts is paramount for effective and sustainable management of fishery resources.