bluuebunny/crossref_metadata_2025_split huggingface dataset:
2D Ductile Transition Metal Chalcogenides (TMCs): Novel High‐Performance Ag2S Nanosheets for Ultrafast Photonics
Authors: Feng Jiangjiang , Li Xiaohui , Shi Zhaojiang , Zheng Chuang , Li Xuwei , Leng Deying , Wang Yamin , Liu Jie , Zhu Lujun 
Published: December 2019

AbstractAs a member of the 2D transition metal chalcogenides (TMCs), 2D Ag2S with large absorption coefficient, broadband optical response, extraordinary metal‐like ductility, high plastic deformation strain, unique layered structure, and very low solubility has offered a platform for achieving tremendous success in various fields. Great achievements have been made in exploring the linear optical, mechanical, and photoelectric properties of 2D Ag2S nanosheets. However, the nonlinear optical properties of 2D Ag2S nanosheets and their applications in ultrafast photonics have not been studied. The saturable absorption property of 2D Ag2S nanosheets is experimentally illustrated at the telecommunication band with a large optical modulation depth of 15.5% and a low saturable intensity of 250.4 MW cm−2. Moreover, the 229th harmonic soliton molecule with repetition rate of 1.1 GHz based on 2D Ag2S saturable absorber is realized at the telecommunication band for the first time to the authors' knowledge. Thankfully, 2D Ag2S nanosheets display excellent nonlinear optical properties suggesting that this may open a new door for advanced photonic devices based on 2D Ag2S nanosheets.
Gold‐Catalyzed Atroposelective Synthesis of 1,1′‐Binaphthalene‐2,3′‐diols
Authors: Zhang Jianwei , Simon Martin , Golz Christopher , Alcarazo Manuel 
Published: December 2019

AbstractA highly atroposelective (up to 97 % ee) Au‐catalyzed synthesis of 1,1′‐binaphthalene‐2,3′‐diols is reported starting from a range of substituted benzyl alkynones. Essential for the achievement of high enantioselectivity during the key assembly of the naphto‐3‐ol unit is the use of TADDOL‐derived α‐cationic phosphonites as ancillary ligands. Preliminary results demonstrate that the transformation of the obtained binaphthyls into axially chiral monodentate phosphines is possible without degradation of enantiopurity.
Novel 2‐formylpyridine 4‐allyl‐S‐methylisothiosemicarbazone and Zn(II), Cu(II), Ni(II) and Co(III) complexes: Synthesis, characterization, crystal structure, antioxidant, antimicrobial and antiproliferative activity
Authors: Balan Greta , Burduniuc Olga , Usataia Irina , Graur Vasilii , Chumakov Yurii , Petrenko Peter , Gudumac Valentin , Gulea Aurelian , Pahontu Elena 
Published: December 2019

New zinc (II), copper (II), nickel (II) and cobalt (III) complexes, [Zn (HL)2]I2 (1), [Cu (HL)Cl2] (2), [Cu (HL)Br2] (3), [Cu (HL)(H2O)2](ClO4)2 (4), [Ni (HL)2]I2·H2O (5), [Co(L)2]Cl (6), [Co(L)2]NO3 (7), [Co(L)2]I·[Co(L)2](I3) (8) were obtained with 2‐formylpyridine 4‐allyl‐S‐methylisothiosemicarbazone (HL). The isothiosemicarbazone ligand was characterized by NMR (1H and 13C), IR spectroscopy and X‐ray diffraction. All the complexes were characterized by elemental analysis, IR, UV–Vis, ESI‐MS spectroscopy, molar conductivity, magnetic susceptibility measurements. X‐ray diffraction analysis on the monocrystal and powder elucidated the structure of the complexes 1, 5, 7 and 8.The ligand and the complexes were tested for their antioxidant and antimicrobial activity against Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae and Candida albicans. Also, the antiproliferative properties of these compounds on human leukemia HL‐60, human cervical epithelial HeLa, human epithelial pancreatic adenocarcinoma BxPC‐3, human muscle rhabdomyosarcoma spindle, large multinucleated RD cells and normal MDCK cells have been investigated. The nickel complex 5 and cobalt complexes 6, 7 showed promising antiproliferative activity and low toxicity.
Development and tuning of Matrimid membrane oxygenators with improved biocompatibility and gas permeance by plasma treatment
Authors: Khosravifard Sahar , Hosseini Seyed Saeid , Boddohi Soheil 
Published: December 2019

ABSTRACTIn this study, a commercial polyimide is examined in the capacity of membrane oxygenator. The effects of polymer concentration, cosolvent, and nonsolvent additives in dope solution on the performance and morphology of membranes are investigated. In order to improve the performance, surface modification is carried out by using plasma‐enhanced chemical vapor deposition. The obtained results reveal that CO2 permeance decreased from 495 to 78 GPU upon increasing Matrimid concentration at constant tetrahydrofuran (THF) and ethanol (EtOH) concentrations. It was also found that increasing nonsolvent concentration as well as decreasing cosolvent concentration in dope led to increase in membrane gas permeance. According to morphological characterizations, increase in polymer concentration resulted in transformation of membranes from porous into spongy like microstructure with formation of a denser skin layer. In addition, membrane porosity and mean pore size reduced by increasing THF and decreasing EtOH concentrations. On the other hand, plasma treatment successfully introduced fluorine groups onto the membrane surface which promoted biocompatibility of the membranes. Energy‐dispersive X‐ray spectroscopy results revealed that fluorination of membrane surface was attained up to 23% and contact angle of membrane enhanced up to 120°. Membrane permeance was also increased slightly upon modification. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48824.
Optimization of water flux and salt rejection properties of polyamide thin film composite membranes
Authors: Azizi Jaber , Sharif Alireza 
Published: December 2019

ABSTRACTOptimizing synthesis factors of polyamide top layers is an important requirement in the design of thin film composite (TFC) membranes. In this research, the top layer fabrication method (conventional, heat curing, and spin coating), type of acid acceptor (sodium carbonate, sodium hydroxide, and triethylamine), type of organic phase solvent (hexane, heptane, and mixed hexane/heptane), and concentration of surfactant sodium dodecyl sulfate (0, 0.5, and 1 wt %) are selected as the control parameters of this synthesis and optimized using the Taguchi approach. The analysis of variance shows that the layer fabrication method is the most influential parameter on water flux and salt (NaCl) rejection of TFCs. Furthermore, although the type of organic solvent has not a significant contribution to the water flux, it is another significant factor affecting the rejection. The optimized membrane is then used to construct structure–property relationships and to understand the influence of each individual factor on the desalination performance. Accordingly, a TFC membrane with the top layer fabricated by the heat curing method, in the presence of Na2CO3 as the acid acceptor, hexane as the organic phase solvent and 0.5 wt % of the surfactant is prepared that shows water permeance of 2.73 L m−2 h−1 bar−1 and NaCl rejection of 98.1%. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48858.
A data management workflow of biodiversity data from the field to data users
Authors: Hackett Rachel A. , Belitz Michael W. , Gilbert Edward E. , Monfils Anna K. 
Published: December 2019

PremiseHeterogeneity of biodiversity data from the collections, research, and management communities presents challenges for data findability, accessibility, interoperability, and reusability. Workflows designed with data collection, standards, dissemination, and reuse in mind will generate better information across geopolitical, administrative, and institutional boundaries. Here, we present our data workflow as a case study of how we collected, shared, and used data from multiple sources.MethodsIn 2012, we initiated the collection of biodiversity data relating to Michigan prairie fens, including data on plant communities and the federally endangered Poweshiek skipperling (Oarisma poweshiek).ResultsOver 23,000 occurrence records were compiled in a database following Darwin Core standards. The records were linked with media and biological, chemical, and geometric measurements. We published the data as Global Biodiversity Information Facility data sets and in Symbiota SEINet portals.DiscussionWe highlight data collection techniques that optimized transcription time, including the use of predetermined and controlled vocabulary, Darwin Core terms, and data dictionaries. The validity and longevity of our data were supported by voucher specimens, metadata with measurement records, and published manuscripts detailing methods and data sets. Key to our data dissemination was cooperation among partners and the utilization of dynamic tools. To increase data interoperability, we need flexible and customizable data collection templates, coding, and enhanced communication among communities using biodiversity data.
Plot Locator: An app for locating plots in the field
Authors: Boudell Jere A. , Middleton Beth A. 
Published: December 2019

PremiseOne of the challenges in field biology is locating previously sampled plots. The Plot Locator app was developed to assist field biologists with plot identification and location, with or without GPS or online connectivity.Methods and ResultsThe Plot Locator Android app helps users locate field plots by creating a searchable database that stores study area information, such as site/plot names and numbers, distances from landmarks, optional cardinal directions and GPS coordinates, and field notes. A GPS assist and Google Maps can also be used with the app when connectivity is available. All study location data and field notes are stored in a downloadable CSV file on the user's device.ConclusionsThe Plot Locator app provides a comprehensive searchable database of study area information, plot location information, and location aids, which are easily accessed in the field.
Total controllability and observability for dynamic systems with non‐instantaneous impulses on time scales
Authors: Kumar Vipin , Malik Muslim 
Published: December 2019

AbstractIn this paper, we establish the total controllability and observability results for a dynamic system with non‐instantaneous impulses on time scales in a finite dimensional space
. This paper consists of two segments: the first segment of the work is concerned with total controllability and the other segment with total observability analysis. The tools for study include variation of parameter and Gramian matrix. Some theoretical as well as numerical examples with simulation for two time scales
and
are given to illustrate the application of these results.
MXene‐Based Anodes for Metal‐Ion Batteries
Authors: Greaves Michael , Barg Suelen , Bissett Mark A. 
Published: December 2019

Abstract2D transition metal carbides and nitrides (MXenes) are electrochemically active materials capable of exhibiting pseudocapacitance. Multilayer MXenes are similar to graphite, but with larger interlayer spacing and surface functionalities which allow them to readily disperse in water and undergo a range of reactions without compromising their electrical conductivity. The large interlayer spacing enables MXenes to readily intercalate large ions, and form composites with materials such as graphene, metal oxides, transition metal dichalcogenides and silicon, with which they make electrodes able to deliver exceptional capacities at high power rates over thousands of cycles. Research into MXenes for energy storage has grown exponentially since 2011, and it is now necessary, especially for readers new to the field, to review progress made in more specific areas. This critical review will therefore analyse the progress made in developing MXene‐based batteries, focusing solely on anodes developed for metal‐ion batteries such as Li‐ion, Na‐ion and K‐ion.
Effect of Bi3+ addition on the upconversion luminescence properties of NaYbF4:Er
Authors: Agarwalla Sandeep K. , Ruz Priyanka , Mohanty Jyotirmayee , Sridhar G. , Sudarsan V. 
Published: December 2019

AbstractIn this study, Bi3+ incorporation in NaYbF4:Er lattice and its influence on upconversion luminescence properties have been investigated in detail using techniques such as temperature‐dependent luminescence, Fourier transform infrared spectroscopy and X‐ray diffraction (XRD). The study was carried out to develop phosphors with improved upconversion luminescence. From photoluminescence and lifetime measurements it is inferred that luminescence intensity from NaYbF4:Er increases with Bi3+ addition. The sample containing 50 at.% Bi3+ ions exhibited optimum upconversion luminescence. Increased distance between Yb3+–Yb3+ and Er3+–Er3+ due to Bi3+ incorporation into the lattice and associated decrease in the extent of dipolar interaction/self‐quenching are responsible for increase in lifetime values and luminescence intensities from Er3+ ions. Incorporation of Bi3+ into NaYbF4:Er lattice reduced self‐quenching among Yb3+–Yb3+ions and this facilitated energy transfer from Yb3+ to Er3+. This situation also explains decrease in the extent of temperature‐assisted quenching of emission from thermally coupled 2H11/2 and 4S3/2 levels of Er3+. Based on Rietveld refinement of XRD patterns it was confirmed that a maximum of 10 at.% of Bi3+added was incorporated into the NaYbF4:Er lattice and the remaining complex co‐exists as a BiOF phase. These results are of significant interest in the area of development of phosphors based on Yb3+–Er3+ upconversion luminescence.
Application of Ausubel cognitive assimilation theory in teaching/learning medical biochemistry and molecular biology
Authors: Tian Zhijie , Zhang Kun , Zhang Tao , Dai Xiaozhen , Lin Juan 
Published: December 2019

Abstract“Didn't understand or not fully understand” is the most common situation that students experience when they learn medical biochemistry and molecular biology (MBMB). Therefore, the primary task of teaching MBMB is to help students overcome the difficulties in “conceptual understanding.” The core of the solution to these problems lies in the acquisition and application of cognitive skills. The key to applying Ausubel cognitive assimilation theory (A's CAT) is to expand the knowledge capacity of students’ cognitive structure through the purposeful “production” and employment of advanced organizers, with which students can replace “rote learning” with “meaningful learning” and ultimately develop an interest in MBMB courses. The results showed that the application of A's CAT did not only encourage the students to use cognitive skills to learn and understand MBMB knowledge and overcome the barrier to learning that results from the characteristics of the MBMB course, but also expanded and deepened the MBMB course contents. As a branch of learning theory, A's CAT provides practical methods for the several hypotheses of learning theory. Among these, the advanced organizer strategy realizes the organization and reorganization of new knowledge; the progressive differentiation strategy reduces the difficulty of complex and abstract knowledge; the implementation of the advanced organizer strategy and integrative reconciliation strategy forms the concept map. Taken together, the application of A's CAT includes cognitive strategy and metacognitive strategy when the cognitive process is conducted in a meaningful way. More importantly, application of A's CAT guides students to participate in active learning and builds “scaffolding” for the teaching/learning MBMB of student‐centered goals.
Three‐year clinical outcome of biodegradable hybrid polymer Orsiro sirolimus‐eluting stent and the durable biocompatible polymer Resolute Integrity zotarolimus‐eluting stent: A randomized controlled trial
Authors: Kim Soo‐Hyun , Kang Si‐Hyuck , Lee Joo Myung , Chung Woo‐Young , Park Jin Joo , Yoon Chang‐Hwan , Suh Jung‐Won , Cho Young‐Seok , Doh Joon‐Hyung , Cho Jin Man , Bae Jang‐Whan , Youn Tae‐Jin , Chae In‐Ho 
Published: December 2019

AbstractAimsWe compared long‐term clinical outcomes between patients treated with Orsiro sirolimus‐eluting stent (O‐SES) and those treated with durable biocompatible polymer Resolute Integrity zotarolimus‐eluting stent (R‐ZES).Methods and ResultsThe ORIENT trial was a randomized controlled noninferiority trial to compare angiographic outcomes between O‐SES and R‐ZES. We performed a post hoc analysis of 3‐year clinical outcomes and included 372 patients who were prospectively enrolled and randomly assigned to O‐SES (n = 250) and R‐ZES (n = 122) groups in a 2:1 ratio. The primary endpoint was target lesion failure defined as a composite of cardiac death, nonfatal myocardial infarction, and target lesion revascularization. At 3 years, target lesion failure occurred in 4.7% and 7.8% of O‐SES and R‐ZES groups, respectively (hazard ratio, 0.58; 95% confidence intervals, 0.24–1.41; p = .232 by log‐rank test). Secondary endpoints including cardiac death, myocardial infarction, and target lesion revascularization showed no significant differences between the groups. Stent thrombosis occurred in two patients in R‐ZES group (0.0% vs. 1.6%, p = .040).ConclusionThis study confirms long‐term safety and efficacy of the two stents. We found a trend for lower target lesion failure with O‐SES compared to R‐ZES, although statistically insignificant.
Evaluation of variation in Ethiopian sorghum injera quality with new imaging techniques
Authors: Fox Glen , Nugusu Yohannes , Nida Habte , Tedessa Taye , McLean Greg , Jordan David 
Published: December 2019

AbstractBackground and ObjectivesInjera (a fermented pancake‐like product) is a traditional food in Ethiopia but is traditionally made from tef (Eragrostis tef). But sorghum also a traditional Ethiopian crop can be used although considered having a lower quality. A 139 sorghum (Sorghum bicolor) cultivars and their corresponding injera were tested for a range of chemical tests, namely total starch, amylose, and tannin contents, plus a newly developed image analysis program to provide objective measures of the injera.FindingsThe results showed several sorghums were superior to tef in making injera, based on the chemical, image, and/or sensory analysis. Tannin content was highly positively correlated with color and negatively with taste, while high starch content was more related to softness and rollability. The imaging analysis also provided a rapid and more objective assessment of injera. Two sensory traits, color and eye evenness, were strongly positively correlated to the image data, through L*, a* and b*, and average pixel count per “eye,” respectively.ConclusionsQuality testing involving human sensory panels within a breeding program is time consuming, costly and can be impractical for the selection of superior lines from large numbers of selection candidates to the next stage. Objective tests such as imaging analysis can be used at earlier stages in the breeding program which would allow breeding lines with suitable injera quality to be progressed. This would result in new sorghum varieties with fresh injera quality similar too or better than tef.Significance and noveltyA new image analysis program compliments chemical analysis for early screening of sorghums for injera, saving time and costs.
Wrinkled Perovskite La0.9Mn0.6Ni0.4O3−δ Nanofibers as Highly Efficient Electrocatalyst for Rechargeable Li−O2 Batteries
Authors: Guo Shuai , Zou Lu , Wang Ziling , Sun Mingjie , Chen Yao , Chi Bo , Pu Jian , Li Jian 
Published: December 2019

AbstractThe design of high‐performance electrocatalysts is crucial to the capacity performance and cycle stability of Li−O2 batteries. Herein, wrinkled perovskite La0.9Mn0.6Ni0.4O3−δ nanofibers (LMN NFs) are synthesized by electrospinning method as cathode catalyst for Li−O2 batteries. In comparison with La0.9Mn0.6Ni0.4O3−δ nanoparticles synthesized by traditional sol‐gel method (LMN NPs), the batteries with the LMN NFs catalyst exhibit the larger specific discharge capacity (9397 mAh g−1), better cycle stability (100 cycles) and lower voltage gap (1.111 V) at a current density of 300 mA g−1. The improvement of electrochemical performance is correlated with the structure of wrinkled nanofibers that provides abundant active sites and sufficient provision for Li2O2 deposition. The research provides a highly efficient perovskite‐type electrocatalyst for rechargeable Li−O2 batteries.
Iron‐Catalyzed Oxidative C−C Cross‐Coupling Reaction of Tertiary Anilines with Hydroxyarenes by Using Air as Sole Oxidant**
Authors: Purtsas Alexander , Kataeva Olga , Knölker Hans‐Joachim 
Published: December 2019

AbstractA mild procedure for the oxidative C−C cross‐coupling of tertiary anilines with phenols is described which provides the products generally in high yields and with excellent selectivity. The reaction is catalyzed by the hexadecafluorinated iron–phthalocyanine complex FePcF16 in the presence of substoichiometric amounts of methanesulfonic acid and ambient air as sole oxidant.
Alkaline Water Electrolysis: Efficient Bridge to CO2‐Emission‐Free Economy
Authors: Lüke Lukas , Zschocke Andrei 
Published: December 2019

AbstractWater electrolysis is a key technology to realize sector coupling and renewables integration. To establish CO2‐free or ‐reduced value chains as well as carbon capture and utilization, “green hydrogen” is the essential element, serving as fuel, energy carrier, and feedstock for “green chemicals”. As a well‐developed technology, alkaline water electrolysis (AWE) enables industrial scale hydrogen production in high purity. The electrolyzers are highly dynamic in operation and can also serve as primary control reserve, thus further stabilizing the power grid.
The outer dynein arm assembly factor CCDC103 forms molecular scaffolds through multiple self‐interaction sites
Authors: King Stephen M. , Patel‐King Ramila S. 
Published: December 2019

AbstractCCDC103 is a small protein with unusual biophysical properties that is required for outer dynein arm assembly on ciliary axonemes. Mutations in both human and zebrafish CCDC103 proteins lead to primary ciliary dyskinesia. Previous studies revealed that this protein can oligomerize and appears to be arrayed along the entire length of the ciliary axoneme. CCDC103 also binds purified microtubules directly and indeed stabilizes them. Here we use biochemical approaches to identify two regions of CCDC103 that mediate self‐interaction. In both cases, these associations are stable to heating in the presence of detergent and are not disrupted by strong reducing agents. One interaction region consists of a 27‐residue inherently disorder segment that can mediate heat/detergent‐resistant dimerization when attached to unrelated monomeric proteins. The second interface includes the C‐terminal RPAP3_C alpha helical domain. Our data suggest that CCDC103 can form an unconventional polymer and we propose models for how the monomers might be organized. We also use molecular modeling of the RPAP3_C domain to determine the structural consequences of the pathogenic H154P mutation found in human PCD patients.