bluuebunny/crossref_metadata_2025_split huggingface dataset:
Enhanced antibacterial and adhesive properties of chitosan/gelatin hydrogel containing berberine hydrochloride and prepolymerized gallic acid exhibiting aggregation‐induced emission
Authors: Liu Chengde , Du Wanting , Jiang Luyao , Li Yizheng , Liu Cheng , Jian Xigao 
Published: June 2023

AbstractMedical devices and human implant materials carry a risk of bacterial infection. Biocompatible and adhesive antibacterial materials that prevent biofilm formation are commonly used to reduce the risk. Herein, a crosslinked chitosan/gelatin (CG) hybrid hydrogel with antibacterial and adhesive properties was developed by introducing berberine hydrochloride (BBR) and adhesive prepolymerized gallic acid (PGA) to the hydrogel. BBR self‐assembles into nanoparticles and imparts AIE function to hydrogels by intermolecular electrostatic interactions and π–π stacking. The hydrogel was used as a stable carrier for BBR. The antibiofilm performance against Escherichia coli and Staphylococcus aureus after light exposure increased from 20% and 30% (CG hydrogel) to 74% and 85% (CGBBRPGA hydrogel), respectively. When used as a photodynamic agent, the hybrid hydrogel exhibited enhanced antibacterial and antibiofilm capabilities against both Gram‐negative (E. coli) and Gram‐positive (S. aureus) bacteria. The CGBBRPGA hydrogel showed strong adhesion to the surfaces of pig skin (9.2 kPa), glass (7.6 kPa), steel sheet (5.8 kPa), and PEEK sheet (5.5 kPa). Furthermore, it exhibits cell adhesion and shows negligible cytotoxicity, which indicates its cytocompatibility. Consequently, the fabricated hybrid hydrogel offers potential applications in biomedicine, particularly in wound dressing and surface modification of medical implants.
Solvent effects on the sodium borohydride reduction of 2‐halocyclohexanones
Authors: Rodrigues Silva Daniela , Zeoly Lucas A. , Vermeeren Pascal , Cormanich Rodrigo A. , Hamlin Trevor A. , Fonseca Guerra Célia , Freitas Matheus P. 
Published: June 2023

AbstractWe have investigated the stereoselectivity and reactivity of the sodium borohydride reduction of 2‐X‐cyclohexanones (X=H, Cl, Br) using a combined approach of competitive experiments and density functional theory calculations. Our results show that the hydride addition proceeds via a late transition state in which the C–H bond is nearly formed, consistent with the mild reducing power of NaBH4. The reaction barrier decreases from the 2‐halocyclohexanones to the unsubstituted cyclohexanone, in line with relative reactivities observed in the competitive experiments. Furthermore, we provide a protocol to solve the longstanding issue of properly modelling the axial–equatorial facial selectivity of hydride addition to the carbonyl group substituted with a vicinal polar group. The inclusion of implicit solvation in combination with an explicit solvent molecule is crucial to reproduce the stereoselective formation of the cis product observed experimentally.
High performance foams and their nanocomposites generated via liquid state frontal polymerization
Authors: Daguerre‐Bradford John A. , Lepcio Petr , Camarda Daniel S. , Lesser Alan J. , Cristadoro Anna M. , Linnenbrink Martin , Schütte Markus 
Published: June 2023

AbstractAnisotropy in naturally occurring or synthetic microcellular structures is an important feature for the development of materials with high specific stiffness and strength, in addition to creating materials with unique physical properties. Polymeric foams constitute a broad class of materials that are widely used for their advantages of low density, high specific mechanical properties and high insulative properties. Traditional synthetic routes are slow, energy demanding processes that employ the use of high temperature ovens, freezers, or high‐pressure equipment. Herein we present a convenient and energy efficient method to produce anisotropic high performance polymeric foams via rapid radically induced cationic frontal polymerization coupled with chemical blowing agents. The degree of pore orientation and degree of anisotropy are a result of the propagating front working in concert with the foam volume expansion. This paper presents results into FP foam formation to illustrate how changes in boundary conditions and front initiation position affect both the microcellular structure and their resulting physical and mechanical properties. Additionally, results are presented to show how changes in resin formulation, such as the addition of nanoparticles affect both properties as well as the microcellular structure and anisotropy.
Icariin alleviates ferroptosis‐related atherosclerosis by promoting autophagy in xo‐LDL‐induced vascular endothelial cell injury and atherosclerotic mice
Authors: Wang Xindong , Zhang Meng , Mao Chenhan , Zhang Chengbo , Ma Wenqi , Tang Jiahui , Xiang Dongyang , Qi Xiaoxia 
Published: June 2023

AbstractVascular endothelial cells (VECs) are located between the blood plasma and the vascular tissue, and the ferroptosis (iron‐dependent programmed cell death) of VECs can lead to a range of cardiovascular diseases. Icariin is the main active ingredient of Epimedium brevicornum Maxim., which can improve endothelial cell dysfunction. In the present study, the protective effects of icariin on oxidised low‐density lipoprotein (ox‐LDL)‐treated VECs and high‐fat diet‐fed Apolipoprotein E‐deficient mice were investigated. Inflammatory fibrosis in tissues and inflammatory factors in serum and cell supernatants were detected, and mitochondrial membrane potential and the expression levels of ferroptosis‐associated proteins were also detected. The results revealed that icariin reduced the endothelial atherosclerotic plaque area and collagen fibres in aortic sinus tissue, and increased the viability and mitochondrial membrane potential, whereas it reduced the reactive oxygen species levels of VECs. The nucleation of transcription factor EB (TFEB) and subsequent autophagy were negatively associated with ferroptosis in endothelial cells, and the more prominent the autophagy, the lower the levels of ferroptosis. Furthermore, by co‐treating the cells with icariin and the two autophagy inhibitors, Bafilomycin A1 (blocking autophagosome and lysosome fusion) and 3‐methyladenine (blocking autophagosome formation), respectively, the promoting effects of icariin on autophagy were found to be mediated through the process of autophagosome–lysosome fusion. In in vivo experiments, icariin reduced ferroptosis, alleviated atherosclerotic lesions and increased the rate of TFEB nucleation. Additionally, it was found that ARG304, THR308 and GLN311 were the optimal binding sites for the interaction between icariin and TFEB. Taken together, these results suggest that the fusion of autophagosomes and lysosomes promoted by icarrin enhances autophagy and thus reduces ferroptosis. Therefore, icariin may be a potential candidate for the prevention of ferroptosis of VECs and, thus, for the treatment of cardiovascular diseases.
HMI‐assisted visual interface‐cum‐embedded system for measurement of tractor–implement performance parameters
Authors: Shrivastava Prateek , Tewari V. K. , Gupta Chanchal , Chouriya Arjurn 
Published: June 2023

AbstractA human–machine interface (HMI)‐based visual interface along with an embedded system was developed to real‐time measure, display, and store the various tractor–implement performance parameters, that is, geoposition, depth, speed, slip, fuel consumption, draft, and power take‐off (PTO) torque. The developed system consists of various commercially available (global positioning system, rotary potentiometer, tension/compression load cell, Hall‐effect sensor, flow meter, and strain gauge) sensors/transducers to measure the performance parameters. A strain‐gauge‐based special type of transducer was also developed for measuring the PTO torque acting on the implement and the output of the transducer was transferred to the virtual interface‐based data acquisition system using radio frequency‐based modules. Along with the sensors, the developed system is composed of a microcontroller to process the data received from sensors, an HMI‐assisted smart touch screen to display the output, and a secure digital card module to store the processed data. The developed visual interface of the embedded system comprises multiple operator‐friendly touch screens and each screen was designed with a graphical user interface for the visual presentation of the tractor–implement performance parameters. The system was installed in the TAFE Samrat 4410 tractor and tested under various field operations. Sensors employed in the system were calibrated for obtaining precise measurement, and excellent linearity with a high correlation between actual and measured variables. Under various field operations (plowing and tillering), a maximum error of 15% (except PTO torque) was found between parameters measured with the developed system and manual/predicted measurement. The field results fortify the acceptable accuracy of the developed system. The developed system will be helpful for researchers or students to study the matching of tractor–implement combinations.
Unraveling the intricate relationship between unemployment, population, and poverty in Sub‐Saharan Africa: Does quality of life matter?
Authors: Zaman Umer , Onwe Joshua Chukwuma , Jena Pabitra Kumar , Anyanwu Ogochukwu C. , Ebeh Joy Eleojo , Fulu Obonetse 
Published: June 2023

AbstractThe study aims to address poverty eradication efforts globally and promote sustainable development goals (viz., SDGs 1 and 8), specifically focusing on improving quality of life, population optimization, job creation, and economic growth. The research investigates the increasing poverty rates in Sub‐Saharan Africa and analyses the role of population, unemployment, and quality of life in 18 selected countries from 2002 to 2019. The study employs the novel panel quantile autoregressive distributed lag method (PQARDL) developed by Chishti and Retish (2023) to address complex econometric challenges. The findings indicate that unemployment significantly contributes to short‐ and long‐term poverty across all market situations (bearish, normal, and bullish). Conversely, population growth significantly discourages poverty across African economies in the short and long term. These effects are observed in the case of remittances and GDP. Interestingly, the impact of infant mortality and life expectancy on poverty remains insignificant in the short term. Still, life expectancy discourages poverty in the long term, while infant mortality increases poverty in bearish, normal, and bullish market situations. As a result, unemployment and population growth are important factors determining poverty in Sub‐Saharan Africa. The study discusses policy directions based on these findings to address poverty effectively.
Contemporary sustainability themes in tourism and hospitality during and post COVID‐19: Critical review and a step strategies forward for post the pandemic
Authors: Salem Islam Elbayoumi , Abbas Haidar , Akram Hafiz Wasim , Elbaz Ahmed Mohamed 
Published: June 2023

AbstractThe onset of COVID‐19 has challenged economies and industries globally and thwarted their contributions towards the United Nations Sustainable Development Goals (UNSDGs). In coping with the COVID‐19‐related challenges, the global tourism and hospitality industry is also affected to its worst level. Thus, researchers employed bibliometric analysis and a science mapping approach to investigate the structure of the contemporary sustainable issues in tourism and hospitality research during COVID‐19, the most productive and impactful research constituents (journals, organizations, countries, and authors), the most impactful research works, the major emerging research themes, and the agenda for future research. The results of the bibliographic data (Scopus, Jan 2020–Sep 2022) analysis revealed that research in the selected field is still at a very nascent stage. The majority of the research papers focus on ‘responsible consumption and production (UNSDG‐12)’, ‘good health and well‐being (UNSDG‐3)’, and ‘decent work and economic growth (UNSDG‐8)’. The science mapping approach led to the development of eight propositions related to the emerging themes of knowledge. The researchers have discussed each research theme in detail and laid out an agenda for future research.
Patient and Caregiver Motivators and Barriers to Eczema Clinical Trial Participation: Analysis of Survey Data
Authors: Jacobson Michael Evan , Thibau Isabelle J. , Baghoomian Wenelia , Latour Emile , Kastala Ajai , Loiselle Allison R. , Simpson Eric Lawrence , Begolka Wendy Smith 
Published: June 2023

Abstract

Background
Eczema clinical trials (CTs) are increasing in number, yet participation across the eczema community is low. Little is known about patient characteristics and views on motivators and barriers to CT participation (CTP).

Objectives
Determine factors that motivate or impede participation in eczema CT and respondent characteristics associated with these factors.

Methods
Qualitative thematic analysis was performed on open-ended questions from an online survey that collected respondent demographics, understanding of and experience with CTs, and drivers/barriers to CTP. Mixed-methods analysis included 924 respondents, 728 (78.8%) adults with eczema and 196 (21.2%) caregivers of children with eczema.

Results
A large proportion (71.8%) of respondents would potentially participate in CTs. The most common theme for why a respondent considered or would explore CTP was burden of disease (81.0% and 57.3% respectively). Among those who participated in or considered a CT, caregivers (p = 0.001) reported fewer altruistic motivations compared to adult patients, with trends towards men citing disease burden more (57.0% vs. 50.9%) and altruism less (14.5% vs. 19.2%) than women. Lack of awareness (57.7%) was the most common reason for never having considered a CT. Among those who never considered CTP, age (p = 0.012) and eczema severity at its worst (p = 0.002) were associated with reasons why they never participated. Specifically, older and less severe patients had greater perceptions of eligibility as a barrier to CTP. Caregivers more commonly cited fear of CT risks (20% vs. 11.4%) compared to adult patients who cited accessibility concerns (17.7% vs. 8.6%) as barriers to CT exploration. A subgroup of respondents that never considered CTP and extremely unlikely to consider CTs cited more fears/risks/unknowns and accessibility barriers to CTP. No significant differences in motivators or barriers were observed across race/ethnic groups and urban/rural populations.

Conclusions
Motivating factors for CTP include greater disease burden; lack of awareness represents a large barrier. Healthcare providers are trusted intermediaries with ability to refer and inform about CTs; they have a potentially significant role in raising awareness and discussing eczema patient/caregiver perspectives related to CTP. Investigators should tailor recruitment approaches and study design where possible to address identified motivators and barriers.
A Copper Composite Embedded in Graphene Oxide as an Efficient Mordant to Enhance the Properties of Natural Dyes for Cotton Fabric
Authors: Khade Pratiksha , Bhakare Madhuri , Lokhande Kshama , Some Surajit 
Published: June 2023

AbstractSynthetic dyes used in the textile sector have adverse impacts on the environment and human health. Natural dyes are thus a suitable alternative for sustainable textile manufacturing and colouration; however, preparing highly stable dyes on textile fabric remains challenging. In this study, we prepared a copper and 2‐methyl‐8‐hydroxyquinoline (2‐Me‐8‐HQ) functionalized graphene oxide (GO) (CHG) ternary composite as the mordant to enhance the stability and colour strength of naturally extracted turmeric (Tu) and tea (Te) dyes. To evaluate the effect of the CHG composite, it was mixed with Tu and Te dyes to obtain CHG‐functionalized turmeric and tea dyes (TuCHG and TeCHG), respectively. TuCHG and TeCHG exhibited superior colourfastness, wash fastness, and rub fastness, compared with only Tu and Te dyed cotton fabrics. The cytotoxicity of TuCHG and TeCHG was studied in the presence of human keratinocytes HacaT cells. The TuCHG and TeCHG dyes exhibited no cytotoxicity and good antibacterial properties. The proposed method is safe, cost‐effective, and sustainable for applying natural dyes with enhanced stability on cotton fabrics.
Nanomaterials Derived from a Template Method for Supercapacitor Applications
Authors: Li Jiangfeng , Zhu Jiaye , Dong Zhihong , Wu Qingsheng 
Published: June 2023

AbstractAs one of the effective methods for the preparation of nanomaterials, the main advantage of template synthesis method is that the chemical reactions occurring in the liquid phase or the gas phase are carried out within the scope of effective control. Compared with other ordinary methods, nanomaterials prepared by template method deliver various morphology and structure, which could deliver excellent electrochemical performance. In this review, template method has been divided into soft template and hard template, which the former is flexibility and ease of customization and the latter is accuracy and uniformity. But, the soft template lack precision and consistency, while hard template limits creativity and adaptability. In addition, the progress and prospect of template method have been provided.
Green Synthesis of Biomass‐Based Fluorescent Carbon Dots for the detection and adsorption of Fe (III)
Authors: Jin Xilang , Bai Haiyan , Ma Yiting , Li Yulong , Chen Weixing 
Published: June 2023

AbstractFluorescent carbon dots (CDs) derived from natural biomass have attracted considerable attention due to the superior characteristics of low‐cost, large‐scale, renewability, and excellent biocompatibility. In this work, novel orange‐red fluorescent carbon dots (N‐CDs) were successfully designed and prepared via hydrothermal method by using Peony seed residue and o‐phenylenediamine as precursors. The obtained N‐CDs exhibited good aqueous solubility, outstanding fluorescence properties, and high photostability. Moreover, the fluorescence intensity of N‐CDs at 594 nm exhibited a linear change towards Fe3+ in the range of 0.0–50.0 μM, and the detection limit was 20 nM. For fast and efficient Fe3+ sensing, two kinds of solid‐phase fluorogenic test strips and nanofibrous film composited with N‐CDs were fabricated. Furthermore, solid phase materials composited PVDF with N‐CDs (N‐CDs@PVDF) demonstrated outstanding properties in simultaneous Fe3+ adsorption and detection, providing an integrative solution for the detection and decontamination of heavy metal ions
Strategic Optimization of Annealing Parameters for Efficient and Low Hysteresis Triple Cation Perovskite Solar Cell
Authors: Qureshi Akbar Ali , Javed Sofia , Adnan Muhammad , Jamshaid Muhammad , Aftab Akram Muhammad , Ali Usman 
Published: June 2023

AbstractThe highly efficient perovskite solar cells (PSCs) are often developed with a hybrid metal halide perovskite material as the absorber layer. Particularly, cesium (Cs) containing triple cation perovskites (CsFAMA) have emerged as prospective absorber materials owing to their high reproducibility and superior reliability. Mostly, the perovskite thin films preparation involves thermal annealing as a post‐treatment technique strongly dependent on the perovskite materials. By optimizing the parameters for thermal annealing temperature and annealing time, the fabrication of economical perovskite devices is achievable. Herein, we strategically investigated the influence of annealing time by keeping a constant annealing temperature on the growth of triple‐cation perovskite thin films and solar cells. We observed the formation of highly crystallized perovskite thin films with efficient photovoltaic performance for the heating time of just 10 min at 120 °C. Further, the perovskite devices with optimized annealing temperature and time exhibited low hysteresis index might be attributed to reduced trap states owing to improved grain size and crystallinity of CsFAMA thin films. Reduced heating time is desirable and beneficial in the industrial fabrication of photovoltaic devices.
Improvement of Anti‐Corrosion Performance of a Cu‐Ni Bimetallic Organic Framework Smart Coating Using Amino‐Substitution Triazole
Authors: Akhavan‐Bahabadi Zahra , Zare Hamid R. , Mohammadpour Zahra , Mirjalili Bi Bi Fatemeh 
Published: June 2023

AbstractIn this study, a smart pH‐sensitive anti‐corrosion coating was fabricated by encapsulating 3‐amino‐1H‐1,2,4‐triazole (3‐AT) as a corrosion inhibitor in a copper‐nickel bimetallic organic framework (BMOF). The corrosion process of the coating was investigated in a corrosive solution of 3.5 wt% NaCl using potentiodynamic polarization (Tafel) plots and electrochemical impedance spectroscopy (EIS). The synthesized 3‐AT@Cu‐Ni‐BTC BMOF has a loading capacity of 20.8 % for 3‐AT. 3‐AT encapsulated in BMOF is released as the corrosion zone becomes acidic and it serves as a corrosion inhibitor. The sensitivity of this coating to pH has been confirmed by the UV‐Vis method. The released 3‐AT inhibitor has an efficiency of 62.5 % to protect stainless steel against corrosion in the corrosive solution with reducing of optimal dosage by a factor of 4. The equivalent concentration of the released inhibitor is less than 1.25×10−3 M after 1 hour. As found in this study, the consumption of the corrosion inhibitor can be significantly decreased in a 3.5 wt% NaCl solution with the pH‐sensitive feature of the 3‐AT@Cu‐Ni‐BTC BMOF smart coating.
Impurity Analysis of 5.5 N Nitrogen Gas and Its Impact on the Preparation of Class I Type Calibration Gas Mixtures
Authors: Garg Gazal , Kumari Poonam , Soni Daya , Singh Khem , Aggarwal Shankar G , Deep Akash 
Published: June 2023

AbstractKnowledge of impurities in matrix gas is one of the critical requirements for the preparation of class I type calibration gas mixtures (primary reference gas mixtures, PRGMs) as per ISO 6142‐1. PRGMs are prepared gravimetrically using high‐purity component gas and high‐grade nitrogen, here 99.9995 % (5.5 N) as matrix gas. In this study, quantification of gaseous impurities such as moisture (H2O), methane (CH4), and carbon monoxide (CO) in 5.5 N nitrogen is performed using CRDS (cavity ring down spectroscopy). Carbon dioxide (CO2) and total hydrocarbons (THC) are analyzed using gas chromatography flame ionization detector (GC‐FID), while the determination of nitrogen dioxide (NO2) impurity is conducted colorimetrically using a UV‐Vis spectrophotometer. Total impurities in 5.5 N nitrogen are found to be (2945±21.5) ppb. The impact of utilizing this nitrogen is examined through the stability study of ambient range binary component gas mixtures of CH4 and CO in nitrogen and found that 5.5 N nitrogen can be used as matrix gas for preparing PRGMs of CH4 and CO. However, the component gas impurity present in nitrogen potentially affect the accuracy of gravimetrically prepared gas mixture.