bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Effect of a Nonionic Surfactant/ZnO Hybrid Inhibitor on the Self‐Corrosion of Al Alloy in Alkaline Electrolyte and its Application to Al‐air Batteries
Authors: Wang Xueqin , Liu Weiming , Jin Yanxian , Xie Xian , Yang Zhen 
Published: April 2023

AbstractAl self‐corrosion in alkaline electrolytes is a critical issue that restricts the practical application of alkaline Al‐air batteries. To inhibit Al self‐corrosion, a hybrid of nonionic surfactant (branched alkyl glycoside, abbreviated as BAG) and ZnO is developed. Hydrogen evolution test, potentiodynamic polarization, and electrochemical impedance spectroscopy are performed to investigate the corrosion behavior of the Al electrode in inhibitor‐containing solutions. The findings show that the hybrid inhibitor successfully inhibits Al self‐corrosion, with an inhibition efficiency of 85.7 %. SEM and FTIR are employed to analyze the corrosion surface. It reveals the formation of the glucoside‐Al and glucoside‐Zn bonds on Al surface. As a result, the synergistic effect between BAG and ZnO is presented. The results of galvanostatic discharges demonstrate that the BAG/ZnO hybrid can improve the discharge performances of Al‐air batteries. The specific capacity at 20 mA cm−2 reaches 2396 Ah kg−1, with a high anode utilization efficiency of 80.4 %.
Sidechain‐Backbone Tetrel Bonding Interactions Provide a General Mechanism for trans‐Peptoid Stabilization
Authors: Baruah Kalpita , Kalita Debajit , Sahariah Biswajit , Kishore Rai Deka Jugal , Vishnoi Pratap , Kanta Sarma Bani 
Published: April 2023

AbstractCis‐trans isomerization of amide bonds impedes de novo design of folded peptoids (poly‐N‐substituted glycines) with precise secondary structures and affects peptoid‐biomolecule binding affinity. Herein, from X‐ray, NMR and DFT studies of azapeptoids, we have discovered a tetrel bonding interaction that stabilizes trans‐peptoids. We show that peptoids having α‐heteroatoms and N‐aryl groups in the sidechain adopt trans‐amide geometries due to the presence of a nX/πAr→σ*Cα−N tetrel bonding interaction between the sidechain α‐heteroatom lone pair (nX) or π‐electrons (πAr) and the σ* orbital of the backbone Cα−N bond. Further, CD spectroscopic studies of oligo‐proline host–guest model peptides showed that azapeptoid residues stabilize polyproline II helical conformation. These data indicate that the sidechain‐backbone tetrel bonding could be leveraged to design peptoids with precise secondary structures for a wide range of biological and material applications.
Asymmetric Green Bonds‐Energy Efficiency Nexus in European Union Countries: Evidence from Econometric Estimation
Authors: Zhang Dan , Nazar Raima , Guo Man 
Published: April 2023

AbstractGreen financing has a direct or indirect link with energy efficiency and environmental‐based sustainable development goals. The present study explores the nonlinear green bonds‐energy efficiency association in the topmost ten green bonds issuing nations of the European Union (Germany, Italy, France, Sweden, Spain, Netherlands, Norway, Denmark, Belgium, and Finland). Previous research utilizes panel data econometric techniques, yielding typical results about the linkage among green bonds and energy efficiency, despite the reality that numerous nations do not observe such linkage individually. This research, conversely, adopts an unusual approach known as “quantile‐on‐quantile,” which permits researchers to observe dependence of time‐series in every single nation exclusively to give global yet country‐related expertise regarding the connection among the variables. According to estimations, green‐bond financing enhances energy efficiency in the majority of the chosen countries at many quantiles of the variables. Additionally, the data reveal that the extent of asymmetry among variables differs by nation, underlining the necessity of governments giving keen attention while adopting green financing and energy efficiency programs.
Design, Synthesis and Biological Evaluation of 7‐Substituted‐1,3‐diaminopyrrol[3,2‐f]quinazolines as Potential Antibacterial Agents
Authors: Yuan Duo , Liu Shangde , Li Shanshan , Liu Rongrong , Zhu Xiong 
Published: April 2023

AbstractThe evolution of drug‐resistant bacteria poses a serious threat to public health; hence, it is imperative to develop new and efficient antibiotics. Irresistin‐16 (IRS‐16) is a dual‐target antibacterial candidate that affects folate biosynthesis and membrane integrity and exhibits potent lethality against various bacteria. In this study, a series of 1,3‐diamino‐7H‐pyrrol[3,2‐f]quinazoline (DAPQ) derivatives based on IRS‐16 was designed and synthesized to identify outstanding antibacterial candidates. The most promising compound, 7‐(4‐(4‐methylpiperazin‐1‐yl) benzyl)‐7H‐pyrrol[3,2‐f] quinazoline‐1,3‐diamine (18 e), displayed excellent antibacterial activity against both gram‐positive and gram‐negative bacteria (minimum inhibitory concentrations=1–4 μg/mL), improved water solubility, poor hemolytic activity and low cytotoxicity. Compound 18 e exhibited rapid bactericidal properties and prevented bacterial resistance in laboratory simulations. These results provide a basis for the development of new DAPQ‐based compounds to combat emerging bacterial resistance.
Evaluation of the linear and volumetric measuring changes in different positions in CBCT
Authors: Fani Samira , Moudi Ehsan , Haghanifar Sina , Seyedmajidi Seyedali , Poursattar‐Bejeh Mir Arash 
Published: April 2023

AbstractObjectivesThe effect of head position on reproducibility of volumetric measurements on Cone‐beam computed tomography (CBCT) scans has not been evaluated before. Thus, this study aimed to assess the changes in linear and volumetric measurements on CBCT scans in different positions of the respective object.Materials and methodsIn this experimental study, 16 balls were placed in containers and underwent CBCT in neutral position and 8 different altered positions. The horizontal and vertical diameters of each ball were measured by OnDemand software while the volume of each ball was quantified by ITK‐Snap software. The reproducibility of linear and volumetric measurements in nine different positions was analyzed by the Cronbach's α. Paired t‐test was applied to analyze the difference in volumetric and linear measurements of the balls in the anterior and posterior halves of the scans in neutral position versus the upward and downward tilts, and right and left halves of the scans in neutral position versus the right and left tilts.ResultsThe Cronbach's α was found to be .982 and .933 for volumetric and linear measurements, respectively, indicating high reproducibility of the measurements. No significant difference was noted in the mean linear measurements on CBCT scans at different positions compared with neutral position. In volumetric measurements, maximum difference between neutral and the other positions was less than 1%.ConclusionsCBCT is a reliable modality for linear and volumetric measurements in different positions.
Wide‐range current‐controlled grounded resistor realization: A new application of the CMOS translinear elements
Authors: Chhabra Aakriti , Senani Raj , Aggarwal Bhawna 
Published: April 2023

SummaryA novel CMOS technology‐based translinear element (TE) was introduced a few years back by Fernandez and Madrenas, which exhibits wide dynamic range characteristics similar to BJT‐based TE. In this communication, a CMOS linear, wide‐range current‐controlled grounded resistor (WR‐CCGR) implemented using a mixed translinear loop employing the quoted TEs, has been explored. The capabilities of the proposed WR‐CCGR have been validated by simulations performed on Cadence Virtuoso software using 0.18 μm gpdk CMOS technology at a supply voltage of ±0.6 V. For the bias current varying from 10 pA to 1 μA, the presented WR‐CCGR is shown to be able to attain a resistance‐tunability range of five decades (from 13 kΩ to 1.3 GΩ), an operational frequency range of 500 Hz–50 MHz and the power consumption in the range of 1.5 to 16.7 μW. Monte Carlo simulations and corner and temperature analyses have been performed to check the robustness of the proposed circuit. The utility of the presented WR‐CCGR has been illustrated by realizing a band‐pass filter exhibiting electronically‐variable‐center frequency.
Endoplasmic reticulum stress and the inflammatory response in allergic contact dermatitis
Authors: Esser Philipp R. , Huber Michael , Martin Stefan F. 
Published: April 2023

AbstractMaintaining homeostasis is central to organismal health. Deviation is detected by a variety of sensors that react to alarm signals arising from injury, infection, and other inflammatory triggers. One important element of this alarm system is the innate immune system, which recognizes pathogen‐/microbe‐ or damage‐associated molecular patterns via pattern recognition receptors localized in the cytosol or in membranes of innate immune cells such as macrophages, dendritic cells, and mast cells but also of T cells, B cells, and epithelial cells. Activation of the innate immune system results in inflammation and is a pre‐requisite for activation of the adaptive immune system. Another important element is represented by the unfolded protein response (UPR), a stress response of the endoplasmic reticulum. The UPR regulates proteostasis and also contributes to the course of inflammatory diseases such as cancer, diabetes, obesity, and neurodegenerative diseases. In addition, the UPR is instrumental in allergic contact dermatitis. This inflammatory skin disease, affecting 5–10% of the population, is caused by T cells recognizing low‐molecular weight organic chemicals and metal ions.In this mini‐review, we discuss the orchestration of inflammatory responses by the interplay of the innate immune system with cellular stress responses in allergic contact dermatitis, with a focus on the UPR.
Electrochemistry and Spin‐Crossover Behavior of Fluorinated Terpyridine‐Based Co(II) and Fe(II) Complexes
Authors: Nößler Maite , Jäger René , Hunger David , Reimann Marc , Bens Tobias , Neuman Nicolás I. , Singha Hazari Arijit , Kaupp Martin , van Slageren Joris , Sarkar Biprajit 
Published: April 2023

AbstractDue to their ability to form stable molecular complexes that have tailor‐made properties, terpyridine ligands are of great interest in chemistry and material science. In this regard, we prepared two terpyridine ligands with two different fluorinated phenyl rings on the backbone. The corresponding CoII and FeII complexes were synthesized and characterized by single‐crystal X‐ray structural analysis, electrochemistry and temperature‐dependent SQUID magnetometry. Single crystal X‐ray diffraction analyses at 100 K of these complexes revealed Co−N and Fe−N bond lengths that are typical of low spin CoII and FeII centers. The metal centers are coordinated in an octahedral fashion and the fluorinated phenyl rings on the backbone are twisted out of the plane of the terpyridine unit. The complexes were investigated with cyclic voltammetry and UV/Vis‐NIR spectroelectrochemistry. All complexes show a reversible oxidation and several reduction processes. Temperature dependent SQUID magnetometry revealed a gradual thermal SCO behavior in two of the complexes, while EPR spectroscopy provided further insights on the electronic structure of the metal complexes, as well as site of reduction.
Evaluating the performance of an inexpensive, commercially available, NFC‐powered and smartphone controlled potentiostat for electrochemical sensing
Authors: Beck Josianne J. , Alenicheva Vera , Rahn Kira L. , Russo Matthew J. , Baldo Thaisa A. , Henry Charles S. 
Published: April 2023

AbstractTo move electrochemical sensing technology from the laboratory into point‐of‐care (POC)‐based settings, electrochemical platforms must be cost‐effective, portable, and user‐friendly. Here, we present the comparison of a near‐field communication (NFC) potentiostat with a traditional potentiostat. The NFC potentiostat is roughly the size of a credit card and is wirelessly powered by a smartphone with a user‐friendly application for electrochemical analysis. The proposed system is portable, affordable, and provides analytical capabilities comparable to traditional benchtop potentiostats. Different redox probes were investigated, including ferricyanide, ruthenium hexamine, and hydroquinone, highlighting the ability of the NFC potentiostat to measure a variety of target analytes. In addition, the NFC potentiostat can perform several electrochemical techniques, such as cyclic voltammetry, differential pulse voltammetry, chronoamperometry and square wave voltammetry. The combination of affordable screen‐printed carbon electrodes (SPCE)s with the portable, inexpensive NFC potentiostat highlights this platform‘s promise towards POC electrochemical sensing applications, particularly for medical diagnostics in rural or low‐income areas.
Recent applications of atomic spectroscopy coupled with magnetic solid‐phase extraction techniques for heavy metal determination in environmental samples: A review
Authors: Pasupuleti Raghavendra Rao , Huang Yeou‐Lih 
Published: April 2023

AbstractAtomic spectroscopy is the most popular approach to determine the presence of heavy metals in the environment. Heavy metals are potentially toxic and have various negative effects on many living organisms, including humans. With the rapid increase in the variety of industries and human activities, large amounts of heavy metals are released into the atmosphere, water, and soil. Heavy metal analysis of environmental samples is very important for determining the exposure limits. Environmental samples are highly complex matrices, and various sample preparation techniques have been developed for the extraction of heavy metals from them, including magnetic solid‐phase extraction (MSPE). The use of MSPE in heavy metal analysis has recently gained significant attention owing to a number of advantages. MSPE technique overcomes main issues such as phase separation, handling, and column packing. The use of magnetic adsorbents in sample preparation has grown over the past few years, making MSPE a promising technique for sample preparation. The objective of this review article is to provide the latest applications of MSPE coupled with atomic spectroscopy for heavy metal determination in environmental samples. In addition, new magnetic adsorbents and their analytical merits are emphasized.
Combination of suitable planting density and nitrogen rate for high yield maize and their source–sink relationship in Northwest China
Authors: Wu Xuanyi , Tong Ling , Kang Shaozhong , Du Taisheng , Ding Risheng , Li Sien , Chen Yang 
Published: April 2023

AbstractBACKGROUNDIncreasing crop yield per unit area by increasing planting density is essential to ensure food security. However, the optimal combination of planting density and nitrogen (N) application for high‐yielding maize and its source–sink characteristics need to be more clearly understood.RESULTSA 2‐year field experiment was conducted combining three planting densities (D1: 70 000 plants ha−1; D2: 100 000 plants ha−1; D3: 130 000 plants ha−1) and three nitrogen rates (N1: 150 kg hm−2; N2: 350 kg hm−2; N3: 450 kg hm−2). The results showed that increasing planting density significantly increased leaf area index and grain yield but negatively affected ear traits. The Richards model was used to fit the dynamic changes of dry matter accumulation of maize under different treatments, and the fitting results were good. Increasing planting density increased population yield while limiting the development of individual plants, bringing the period of rapid dry matter accumulation to an early end and accelerating leaf senescence. An appropriate nitrogen rate could prolong the period of rapid accumulation of dry matter in maize, and increase the 100‐kernel weight. Increasing planting density enhanced post‐silking dry matter accumulation to a lesser extent, and the source–sink relationship of the maize population gradually developed from sink limitation to source limitation with increasing planting density.CONCLUSIONThe decrease in yield due to the insufficient source strength to meet the sink demand at too high densities was the reason that limited further improvement of the optimal planting density. An appropriate nitrogen rate facilitated the realization of yield potential at high density. © 2023 Society of Chemical Industry.
Highly Thermally Stable, Reversible, and Flexible Main Chain Type Benzoxazine Hybrid Incorporating Both Polydimethylsiloxane and Double‐Decker Shaped Polyhedral Silsesquioxane Units through Diels–Alder Reaction
Authors: Chen Cheng‐Yu , Chen Wei‐Cheng , Mohamed Mohamed Gamal , Chen Zih‐Yu , Kuo Shiao‐Wei 
Published: April 2023

AbstractThis work synthesizes a new bifunctional furan derivative (PDMS‐FBZ) through a sequence of hydrosilylation of nadic anhydride (ND) with polydimethylsiloxane (PDMS), reaction of the product with p‐aminophenol to form PDMS‐ND‐OH, and its subsequent Mannich reaction with furfurylamine and CH2O. Then, the main chain‐type copolymer PDMS‐DABZ‐DDSQ is prepared through a Diels–Alder (DA) cycloaddition of PDMS‐FBZ with the bismaleimide‐functionalized double‐decker silsesquioxane derivative DDSQ‐BMI. Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) spectroscopy confirm the structure of this PDMS‐DABZ‐DDSQ copolymer; differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dynamic mechanical analysis (DMA) reveal it to have high flexibility and high thermal stability (Tg = 177 °C; Td10 = 441 °C; char yield = 60.1 wt%); contact angle measurements reveal a low surface free energy (18.18 mJ m−2) after thermal ring‐opening polymerization, because the inorganic PDMS and DDSQ units are dispersed well, as revealed using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). This PDMS‐DABZ‐DDSQ copolymer possesses reversible properties arising from the DA and retro‐DA reactions, suggesting its possible application as a functional high‐performance material.
Thermodynamics of Charged Black Hole in Symmetric Teleparallel Gravity
Authors: Javed Faisal , Fatima G. , Sadiq Sobia , Mustafa G. 
Published: April 2023

AbstractIn the current study, we examine the thermodynamics of a novel symmetric teleparallel gravity charged black hole solution. Our main focus is on the approximated solution for a nonlinear model like . For this purpose, we calculate the Hawking temperature and discuss the stable configuration of considered black hole using heat capacity. Then, we explore the effects of thermal corrections on thermodynamical quantities as well as energies of the system. We study the phase transitions of the system in the background of thermal fluctuations. It is concluded that the presence of coupling constant enhances the thermodynamical stable configuration of uncharged and charged BH geometries. To complete this study, we also explore the interesting aspects of the emission energy and quantum fluctuations. We highlight that our results are in good agreement with the thermodynamics of the previous black hole solutions and assumptions presented in the literature.
Recent Progress in Metal‐Catalyzed Selective Oxidation of 5‐Hydroxymethylfurfural into Furan‐Based Value‐Added Chemicals
Authors: Zhang Song , Chen Zhan , Gu Jun‐Fei , Sang Wei , Jiang Min , Li Shuai , Wang Peng , Kou Zongkui , Chen Cheng 
Published: April 2023

Abstract5‐hydroxymethylfurfural (HMF), one of the most significant biomass‐derived renewable resources, has been widely utilized to create furan‐based value‐added chemicals such as 2,5‐diformylfuran (DFF), 5‐hydroxymethyl‐2‐furancarboxylic acid (HMFCA), 5‐formyl‐2‐furancarboxylic acid (FFCA), and 2,5‐furan dicarboxylic acid (FDCA). Indeed, DFF, HMFCA and FFCA are key intermediate products during the oxidation of HMF to FDCA. Herein, this review aims to demonstrate the recent advances in metal‐catalyzed oxidation of HMF into FDCA via two different reaction routes (HMF‐DFF‐FFCA‐FDCA and HMF‐HMFCA‐FFCA‐FDCA). All the four furan‐based compounds are comprehensively discussed by the selective oxidation of HMF. Additionally, various metal catalysts, reaction conditions, and reaction mechanisms used to obtain the four different products are systematically reviewed. It is anticipated that this review will provide related researchers with new perspectives and speed up the development of this field.
Preparation and investigation of properties of deproteinized natural rubber nanocomposites incorporating functionalized nano‐alumina by in situ emulsion polymerization
Authors: Sadeghi Atefeh , Toiserkani Hojjat 
Published: April 2023

AbstractThe present study reports the preparation, characterization, and investigation of properties of DNR/f‐Al2O3 nanocomposites through an in situ emulsion polymerization technique. The method consists of the dispersion of pretreated nano‐alumina (f‐Al2O3 NPs) onto deproteinized natural rubber (DNR) latex, followed by the polymerization reaction with the K2S2O8/K2S2O5 redox initiation system, after deproteinization of natural rubber using urea in the presence of a surfactant. To improve the compatibility and reactivity of the nanofillers with DNR latex, the nano‐alumina surface was treated with 3‐methacryloxypropyltrimethoxysilane (MPS) to produce f‐Al2O3 NPs. The thermo‐gravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy approved that the MPS was bound onto the surface of Al2O3 NP. The resulting nanocomposites were characterized using standard techniques for physical properties and structural morphology, including X‐ray diffraction (XRD) analysis, FTIR spectroscopy, scanning electron microscopy (SEM), and TGA. The SEM images showed a homogeneous distribution of f‐Al2O3 NPs throughout DNR matrix. Due to such monodisperse particles, the DNR/f‐Al2O3 nanocomposite films revealed significant enhancement in thermal stability with increasing nano‐alumina loading as compared with the neat DNR.
Creativity and the Arts: Traditional and New Media
Authors: Liggett Susan 
Published: April 2023

AbstractThere are numerous theories of creativity from different academic fields, but an overarching unifying theory is almost impossible. Such theories may be specific to a particular context, or they attempt to generalize, with differences in particular disciplines. For example, in psychology the focus is on a micro level with the study of individuals; whereas in the field of innovation research it is on a macro level and often disregards the individual by focusing more on the context. Creativity on a micro level is examined through revealing the process of an individual artist. It introduces ‘material thinking’; an intellectual pursuit specific to the making process and reflects on what may be learned from the process of making art. Art can create knowledge that constructs environments and changes lives. This personal knowledge and the work of the hand is sometimes at odds with the technological world, but a study of artistic practices enables us to see and think differently. Artworks have impact beyond the esthetic to influence social, political, and economic spheres.
Die Ergebnisse im Kontext der Forschungsfrage
Authors: Bührig-Hollmann Annette 
Published: April 2023

ZusammenfassungBerücksichtigte man, dass die an der UNB Beteiligten unterschiedliche Rahmungen für das besitzen, was sie tun, könnte die Beratung individualisiert gestaltet, nach Freiräumen für die Klärung zur Sache gemeinsam gesucht und insgesamt die prekäre Doppelrolle (von Beratung und Benotung) innerhalb dieser Ausbildungssituation gemeinsam reflektiert und nach möglichen Lösungen gesucht werden.