bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ion‐Dipole Chemistry Drives Rapid Evolution of Li Ions Solvation Sheath in Low‐Temperature Li Batteries
Authors: Wang Zhenxing , Sun Zhenhua , Shi Ying , Qi Fulai , Gao Xuning , Yang Huicong , Cheng Hui‐Ming , Li Feng 
Published: May 2021

AbstractSluggish evolution of lithium ions’ solvation sheath induces large charge‐transfer barriers and high ion diffusion barriers through the passivation layer, resulting in undesirable lithium dendrite formation and capacity loss of lithium batteries, especially at low temperatures. Here, an ion‐dipole strategy by regulating the fluorination degree of solvating agents is proposed to accelerate the evolution of the Li+ solvation sheath. Ethylene carbonate (EC)‐based fluorinated derivatives, fluoroethylene carbonate (FEC) and di‐fluoro ethylene carbonate (DFEC) are used as the solvating agents for a high dielectric constant. As the increase of the fluorination degree from EC to FEC and DFEC, the Li+‐dipole interaction strength gradually decreases from 1.90 to 1.66 and 1.44 eV, respectively. Consequently, the DFEC‐based electrolyte displays six times faster ion desolvation rate than that of a non‐fluorinated EC‐based electrolyte at −20 °C. Furthermore, LiNi0.8Co0.1Mn0.1O2||lithium cells in a DFEC‐based electrolyte retain 91% original capacity after 300 cycles at 25 °C, and 51% room‐temperature capacity at −30 °C. By bridging the gap between the ion‐dipole interactions and the evolution of Li+ solvation sheath, this work provides a new technique toward rational design of electrolyte engineering for low‐temperature lithium batteries.
Monitoring Solid‐Phase Reactions in Self‐Assembled Monolayers by Surface‐Enhanced Raman Spectroscopy
Authors: Scherrer Dominik , Vogel David , Drechsler Ute , Olziersky Antonis , Sparr Christof , Mayor Marcel , Lörtscher Emanuel 
Published: May 2021

AbstractNanopatterned surfaces enhance incident electromagnetic radiation and thereby enable the detection and characterization of self‐assembled monolayers (SAMs), for instance in surface‐enhanced Raman spectroscopy (SERS). Herein, Au nanohole arrays, developed and characterized as SERS substrates, are exemplarily used for monitoring a solid‐phase deprotection and a subsequent copper(I)‐catalyzed azide–alkyne cycloaddition “click” reaction, performed directly on the corresponding SAMs. The SERS substrate was found to be highly reliable in terms of signal reproducibility and chemical stability. Furthermore, the intermediates and the product of the solid‐phase synthesis were identified by SERS. The spectra of the immobilized compounds showed minor differences compared to spectra of the microcrystalline solids. With its uniform SERS signals and the high chemical stability, the platform paves the way for monitoring molecular manipulations in surface functionalization applications.
A Scoping Review of Strategies Used to Implement the Surgical Safety Checklist
Authors: Ramírez-Torres Carmen Amaia , Pedraz-Marcos Azucena , Maciá-Soler Maria Loreto , Rivera-Sanz Félix 
Published: May 2021

ABSTRACTIn 2007, the World Health Organization initiated the Surgical Safety Checklist (SSC) as part of an initiative to improve patient outcomes. After publication of the SSC, perioperative nurses identified challenges with implementing it and questioned its effectiveness. We desired to summarize the state of the science on the effectiveness of strategies that perioperative personnel have used to implement and assess the SSC; therefore, we conducted a scoping review. We searched several databases and identified 28 articles that described the three key stages of SSC implementation (ie, before, during, and after). Half of the identified articles addressed intervention strategies and most articles provided strategies for SSC implementation. The literature also indicated that effective implementation occurred when there was adequate planning. Perioperative leaders should work with nurses when implementing the SSC and monitor its use after implementation to verify compliance and help prevent negative patient outcomes.
Clinical Issues—June 2021
Authors: deKay Karen , Wright Renae 
Published: May 2021

THIS MONTH
Selecting an antiseptic skin preparation agent according to the patient’s skin pigmentation
Key words: preoperative patient skin antisepsis, surgical site marking pen, Fitzpatrick skin type scale, tinted antiseptic, ink visibility.Developing a preoperative bathing protocolKey words: preoperative bathing protocol, preoperative showering regimen, antiseptic soap, antiseptic solution, patient education.Decolonizing health care personnelKey words: methicillin-resistant Staphylococcus aureus (MRSA), multidrug-resistant organism (MDRO), colonization, transmission, nasal decolonization.Composition of bone cement and precautions for perioperative personnelKey words: bone cement, absorption exposure, methyl methacrylate (MMA), occupational hazards, personal protective equipment (PPE).
Molecular dynamics study on thermal and mechanical properties of AOO modified DGEBA‐anhydride insulating materials for high voltage GIS
Authors: Zhao Yushun , Zhang Ziyang , Zhang Song , Dou Hongli , Yang Kerong , Yang Wei 
Published: May 2021

AbstractIncreases in rated voltage and power density of high voltage gas insulated switchgears (GIS) impose stringent requirements on the diglycidyl ether of bisphenol A (DGEBA)‐anhydride thermoset, which is widely used as insulation materials for high GIS, for higher mechanical and heat‐resistant properties. In this paper, 3,4‐epoxycyclohexylmethyl 3,4‐epoxycyclohexanecarboxylate (AOO) was copolymerized with DGEBA ‐anhydride system to increase the mechanical and thermal properties of the thermosets. Based on the molecular dynamics simulation method, the coefficient of thermal expansion, glass transition temperature (Tg), and modulus of AOO copolymer‐modified DGEBA‐anhydride thermosets were calculated. The AOO copolymer‐modified DGEBA‐anhydride thermosets specimens were further experimentally prepared and subjected to differential scanning calorimeter test, TGA test, tensile bending test, and dielectric test. The results of simulation and experiment simultaneously indicated that the Tg and modulus of the DGEBA‐anhydride thermoset are enhanced after AOO modification. This is mainly due to the decrease in free volume percentage and mean square displacement of the epoxy cross‐linked network structure after the introduction of AOO molecules, which makes the structure more compact and the cross‐link density increased. Additionally, the dielectric performances of the thermoset was enhanced by AOO. The excellent thermal, mechanical and dielectric properties of AOO modified DGEBA‐anhydride thermoset make it a promising application in the field of high voltage GIS.
Modification of advanced Takayanagi model for the modulus of nanoclay/polymer systems comprising the effectual networks of both nanoclay and interphase section
Authors: Zare Yasser , Rhee Kyong Yop 
Published: May 2021

AbstractThe interphase section around clays establishes the network in clay/polymer systems. In this article, we focus on the effectual features of interphase net using clay properties and interphase/interfacial factors to progress the Takayanagi model for modulus of clay‐reinforced systems. The effectual loading of interphase district in the samples and the percolation onset define the portion of interphase area in the net. The forecasts of the model are associated to the experiential quantities of several examples and the roles of whole factors in the modulus are vindicated. The lowest crucial interfacial shear modulus (Sc) of 0.01 GPa produces the highest relative modulus (nanocomposite's modulus per matrix modulus) of 3.5, but a higher ''Sc'' than 0.04 GPa deteriorates the fortifying yield of clays in the specimens. Additionally, the full exfoliation of clay platelets and the highest interfacial shear modulus of 90 GPa recover the relative modulus to 3.5, while the clays cannot reinforce the polymer matrix when the number of clays in the stacks is higher than 3 or at interfacial shear modulus less than 25 GPa.
Synthesis and modification of silica‐based epoxy nanocomposites with different sol–gel process enhanced thermal and mechanical properties
Authors: Aziz Tariq , Mehmood Sahid , Haq Fazal , Ullah Roh , Khan Farman Ullah , Ullah Bakhtar , Raheel Muhammad , Iqbal Mudassir , Ullah Asmat 
Published: May 2021

AbstractThis research article describes the results of nano‐silica composites filled with different epoxy contents containing nano‐SiO2 particles from (5–25 wt%). Reinforcing hybrid composites enhance thermal and mechanical properties to achieve vital and sustainable products. Silica‐based nanocomposites with high purity were prepared and used for the surface modification of nanosized silica particles. The surface structure's composition and physical properties of modified nano‐SiO2 particles were characterized through Fourier transferred infrared spectrometer, X‐ray photoelectron spectroscopy, thermogravimetric analyzer, and scanning electron microscopic. Silica‐based nanocomposites were prepared by incorporating of modified nano‐SiO2 as an enhancing filler. The morphology of fracture surface and dynamic mechanical properties were investigated. Results showed that the silica‐based epoxy nanocomposites are bearing a long chain structure that could improve the compatibility of silica nanocomposites with epoxy resin and contribute to a better dispersion state in the matrix, which enhanced the overall performance of epoxy‐cured products.
Preparation of Porous Polymers Based on the Building Blocks of Cyclophosphazene and Cage‐like Silsesquioxane and Their Use as Basic Catalysts for Knoevenagel Reactions
Authors: Soldatov Mikhail , Wang Yiqi , Liu Hongzhi 
Published: May 2021

AbstractPhosphazene‐containing porous materials are of a great interest due to their unique properties, caused by the synergetic presence of nitrogen and phosphorus atoms, and have found applications as adsorbents, basic catalysts, etc. On the other hand, cage‐like silsesquioxanes are ideal building blocks for the preparation of covalently‐linked porous materials. Here two new phosphazene‐functionalized organosilsesquioxane cage‐based porous polymers were synthesized successively by a Friedel‐Crafts reaction of hexapyrrolylcyclotriphosphazene with octavinylsilsesquioxane in the presence of AlCl3 and CF3SO3H as catalysts. The nature of acid catalysts barely influenced the character of pores due to the interaction of catalysts with basic nitrogen atoms of phosphazene units. The obtained polymers exhibited high efficiency as metal‐free catalysts for the Knoevenagel reaction. This work opens new perspectives in the use of porous polymers based on cage‐like organosiloxane compounds as basic catalysts for various reactions.
Assaying of Cu2+ with near‐infrared l‐cysteine‐capped CdSeTe/CdS quantum dots and its effect on cell imaging
Authors: Zhang Huan , Li Zhenzhen , Huang Huaying , Ouyang Si , Deng Yiqing , Zhao Qiang 
Published: May 2021

AbstractNear‐infrared (NIR) core–shell CdSeTe/CdS quantum dots (QDs) modified with l‐cysteine were synthesized in aqueous solution. The QDs had a special NIR‐emitting spectrum, high fluorescence stability and low cytotoxicity. In addition, they exhibited an obvious fluorescence quenching when Cu2+ was present. An NIR nanosensor was prepared for rapidly, sensitively, and selectively determining Cu2+ in solution quantitatively and monitoring the changes in Cu2+ in cells with fluorescence imaging in a semiquantitative way. The linear relationship between the relative fluorescence intensity (F0/F) and the concentration of Cu2+ from 5.12 × 10−8 M to 2.56 × 10−5 M in solution was observed using an NIR fluorescence spectrophotometer with R2 equal to 0.9958. Moreover, in the experiment with the fluorescence microscope, F0/F versus the concentration of Cu2+ from 5.00 × 10−8 M to 7.68 × 10−6 M also showed a good linear relationship with R2 equal to 0.9817. Practical water sample ion detecting experiments had good accuracy and recovery rates. Cell experiments showed that the NIR imaging intensity of cells was inversely proportional to the concentration of copper ions, therefore NIR QDs have great potential for detection of metal ions in solution and in cells.
Sustainable development in small and medium enterprises: The role of entrepreneurial orientation in supply chain management
Authors: Silva Graça Miranda , Gomes Paulo J. , Carvalho Helena , Geraldes Vera 
Published: May 2021

AbstractOrganizations are under increased pressure to improve their sustainable performance through the adoption of green supply chain management (GSCM) practices. Small and medium enterprises (SMEs) have lagged behind larger corporations due to a number of factors. Chief among these factors is the lack of resources and capabilities. In this study, we investigate whether entrepreneurial orientation as a distinctive firm‐level resource contributes to the successful implementation of GSCM practices within SMEs. We use primary data obtained from 316 manufacturing SMEs and analyze the data by using a fuzzy‐set qualitative comparative analysis (fsQCA). Our findings show four equifinal configurations of GSCM practices and the components of entrepreneurial orientation (EO) that lead to high environmental performance. Two practices, “eco‐design” and “internal environmental management”, are present in all configurations, with the latter being the single core condition. The components of EO are present in all the configurations. Three distinct configurations lead to the simultaneous achievement of high environmental performance and high economic performance. Some noticeable differences appear in these configurations: “internal environmental management” is no longer a core condition, instead external practices (“green purchasing,” “cooperation with customers including environmental requirements,” and “investment recovery”) and “risk‐taking” become core conditions. We exptrapolate our findings into a set of propositions that expand theory on the link between entrepreneurial orientation and sustainable performance. Our study provides insights for managers who seek to infuse entrepreneurial thoughts and actions into their green supply chain initiatives.
Design and evaluation of postural interactions between users and a listening virtual agent during a simulated job interview
Authors: Antonio Gómez Jáuregui David , Giraud Tom , Isableu Brice , Martin Jean‐Claude 
Published: May 2021

AbstractPostural interaction is of major importance during job interviews. While several prototypes enable users to rehearse for public speaking tasks and job interviews, few of these prototypes support subtle bodily interactions between the user and a virtual agent playing the role of an interviewer. The design of our system is informed by a multimodal corpus that was previously collected. In this paper, we explain how we were inspired by these video recordings of human interviewers to build a library of motion‐captured movements that interviewers are most likely to display. We designed a fully automatic interactive virtual agent able to display these movements in response to the bodily movements of the user. Thirty‐two participants presented themselves to this virtual agent during a simulated job interview. We focused on the self‐presentation task of the job interview, the virtual agent being listening. Participants stood on a force platform that recorded the displacements of their center of pressure to assess the postural impact of our design. We also collected video recordings of their movements and computed the contraction index and the quantity of motion of their bodies. We explain the different hypotheses that we made concerning (1) the comparison between the performance of participants with human interviewers and the performance of participants with virtual interviewers, (2) the comparison between mirror and random postural behaviors displayed by a female versus a male virtual interviewer, and (3) the correlation between the participants' performance and their personality traits. Our results suggest that users perceive the simulated self‐presentation task with the virtual interviewer as threatening and as difficult as the presentation task with the human interviewers. Furthermore, when users interact with a virtual interviewer that mirrors their postures, these users perceive the interviewer as being affiliative. Finally, a correlation analysis showed that personality traits had a significant relation to the postural behaviors and performance of the users during their presentation.
Contribution of Bioactive Compounds to the Antioxidant Capacity of the Edible Mushroom Neolentinus lepideus
Authors: Quintero‐Cabello Karen P. , Palafox‐Rivera Patricia , Lugo‐Flores Marco A. , Gaitán‐Hernández Rigoberto , González‐Aguilar Gustavo A. , Silva‐Espinoza Brenda A. , Tortoledo‐Ortiz Orlando , Ayala‐Zavala J. Fernando , Monribot‐Villanueva Juan L. , Guerrero‐Analco José A. 
Published: May 2021

AbstractNeolentinus lepideus is a fungus consumed by rural communities in Central America and Asia due to its rich flavor; however, little information on its chemical composition is available. With this in mind, the objective of this work was to determine the content of vitamin E and C, ergosterol, and phenolic compounds of this fungus, as well as its antioxidant capacity. The quantified bioactive compounds were two isoforms of vitamin E, highlighting α‐tocopherol (3370.35 mg/100 g dry weight, DW) and ergosterol (11.70 mg/100 g DW). The total phenolic content was 164.80 mg gallic acid equivalents/100 g, and nine phenolic compounds were identified (protocatechuic, p‐hydroxybenzoic, caffeic, vanillic, ferulic, salicylic, p‐anisic, trans‐cinnamic acids, and scopoletin). The highest antioxidant capacity was detected in the lipophilic extract with TEAC (27688 μmoles Trolox equivalents/100 g). These results suggest that lipophilic compounds are among the main bioactive compounds in N. lepideus, and they might exhibit the highest radical scavenging properties in non‐polar extracts.
Ipsilateral transulnar artery approach catheterizations after failure of the radial approach—Are two sheaths in the same arm safe?
Authors: Zafirovska Biljana , Jovkovski Aleksandar , Vasilev Ivan , Taravari Hajber , Kitanoski Darko , Petkoska Danica , Paljoskovska Savetka , Kostov Jorgo , Ho Kalon K.L. , Kedev Sasko 
Published: May 2021

AbstractAimsTo assess the safety and feasibility of ipsilateral transulnar access (TUA) after failure of radial access (TRA), with two sheaths placed in the radial and ulnar arteries (RA and UA) in the same arm.Materials and MethodsAll consecutive patients with TUA due to inability to cross from ipsilateral TRA in the period from March 2011 until September 2020 were included in the study. We examined clinical and procedure characteristics, access site bleeding and ischemic complications and failure mode of initial TRA. Patients were assessed by duplex ultrasound post‐procedure (at an average of 56 ± 31 months) and followed clinically (functional and pain assessment).ResultsIn this period, out of 51,866 patients 112 (0.2%) had a transulnar artery approach due to inability to cross from ipsilateral radial approach. Mean age of patients was 65 ± 11 years with 44% females. Cause for crossover to ipsilateral TUA was inability to cross a RA anomaly in 107 (95%) patients, mostly due to the presence of a “360°” RA loop in 88 patients.Type 3 and 4 EASY Score hematoma was present in 3 patients (2.6%). Six (5.3%) of the patients had new ipsilateral radial artery occlusion noted on duplex on follow up. There were no ulnar artery occlusions detected. There were no clinical or ischemic hand complications seen during a median 4.3 years of follow up.ConclusionIpsilateral transulnar artery access following failed radial artery access crossing is safe and successful for coronary angiography and intervention with low rates of complications.
Prenatal‐onset INPPL1‐related skeletal dysplasia in two unrelated families: Diagnosis and prediction of lethality
Authors: Abumansour Iman Sabri , Iskandarani Radiah Mahmoud , Edrees Alaa , Javed Farrukh , Taher Fadwah , Hakeem Ghaidaa Farouk 
Published: May 2021

AbstractThis report describes two patients with INPPL1‐ related skeletal dysplasia diagnosed prenatally. A literature review is conducted to find out if high‐lethality is associated with particular pathogenic variants in INPPL1 gene. Prediction of lethality in the prenatal setting has an impact on perinatal management. Some frameshift variants in INPLL1 gene are uniquely observed in lethal cases; however, more patients are needed to confirm the correlation.
Levothyroxine sodium oral solution to control thyroid function in a patient with hypothyroidism and celiac disease
Authors: Asamoah Ernest 
Published: May 2021

AbstractImplementing a gluten‐free diet and switching to the levothyroxine oral solution significantly improved malabsorptive and hypothyroid symptoms in a patient with hypothyroidism, Addison's disease, and celiac disease without the need to increase levothyroxine dosage.
Light‐Promoted Minisci Coupling Reaction of Ethers and Aza Aromatics Catalyzed by Au/TiO2 Heterogeneous Photocatalyst
Authors: Li Zhanchong , Wu Liangying , Guo Jiabao , Shao Yifei , Song Yang , Ding Yuzhou , Zhu Li , Yao Xiaoquan 
Published: May 2021

AbstractIn this paper, Au/TiO2 nanocomposite was synthesized and utilized as highly efficient and green photocatalyst for organic reactions. A sheet‐like anatase titanium dioxide material with a highly active (001) crystal plane was prepared via a solvothermal method. Gold nanoparticles were then loaded on the surface of TiO2 by a liquid‐phase reduction method to give an Au/TiO2 material with good photocatalytic activity. The Au/TiO2 nanocomposite was utilized as a photocatalyst to develop a light‐promoted Minisci oxidative coupling reaction of ether and aza aromatics by using oxygen as green oxidant and only catalytic amount of acid as additive. The protocol shows a good functional group tolerance as well as good to excellent yields for various substrates. With mechanistic studies, Au/TiO2 nanocomposite proved to be an efficient photocatalyst to activate C−H bond via a SEO approach of heteroatoms. Moreover, the solid semiconductor photocatalyst shows good recycling performance, could be easily recovered and reused without significant decrease in yield.
Amino Assisted Protonation for Carbon−Carbon Coupling During Electroreduction of Carbon Dioxide to Ethylene on Copper(I) Oxide
Authors: Deng Hongwei , Guo Chenyan , Shi Penghui , Zhao Guohua 
Published: May 2021

AbstractThe development of effective catalysts for the electrocatalytic carbon dioxide reduction reaction (CO2RR) to two‐carbon (C2) products is a practical approach to solve the energy crisis and stabilize the carbon cycle of the ecosystem. The production of electrocatalytic CO2RR with copper metal shows low selectivity and mainly generates one‐carbon (C1) products, hindering its wide practical application. The use of copper (I) oxide (Cu2O) in electrocatalysis has attracted intense research attention because it can more efficiently produce C2 products with high energy density such as ethylene (C2H4) and ethane (C2H6). We use an amino‐modified Cu2O catalyst (NH2−Cu2O) for electrocatalytic CO2RR to obtain significantly increased production of the CO and C2 products. Electrochemical in‐situ infrared spectroscopy analysis was used to detect the presence of the *COOH and *CHO reaction intermediates. Density functional theory calculations showed that the amino (−NH2) modification reduces the free energy of the *CO→*CHO reaction that is the rate‐determining step in C2H4 production. Our results show that amino modification can promote the protonation of *CO and *CHO carbon‐carbon coupling to produce C2H4. Thus, amino‐modified copper‐based catalysts are promising materials for application in electrocatalytic CO2RR to multi‐carbon products.