bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development and Laboratory Scale Characterization of a New Hybrid Nano‐enhanced Phase Change Material for Solar Thermal Energy Storage
Authors: Pandya Mohit , Ansu Alok Kumar , Sharma Ravi Kumar , Pandey Adarsh Kumar , Tripathi Dharmendra , Sarı Ahmet , Tyagi Vineet Veer 
Published: December 2022

AbstractThe latent heat thermal energy storage (LHTES) systems using organic phase change materials (PCMs) offer significant advantages, however, they suffer with low thermal conductivity and this limitation restricts their uses in many real applications. This weakness of them has attracted the attention of worldwide researchers. In the present work, a novel hybrid organic phase change material (HOPCMs) using two‐step method is prepared by the addition of copper oxide and titanium oxide nanoparticles in different mass fraction ratio for elevating the thermal conductivity of myristic acid (MA) as base PCM. The findings of this experimental work show that with the addition of 75 % CuO and 25 % TiO2 of total 1 % of combined nanoparticles mass fraction, the thermal conductivity of pure PCM enhances by an amount of 13.16 %. The thermo‐physical properties were obtained using differential scanning calorimetry and they show that by the addition of hybrid nanoparticles, PCM does not loses its latent heat by more than 2 %. The chemical and thermal properties were tested by adopting Fourier transform and infrared spectrometer (FT‐IR), X‐ray diffraction (XRD) technique, and thermogravimetric (TGA) analyzer. The reliability and stability of the HOPCMs were checked by conducting accelerated thermal melt/freeze cycle test for 1000 cycles. The HOPCMs so obtained, reveal the good thermal and chemical properties, and ensure a long‐term performance for medium temperature based LHTES systems.
Coordination Properties of Porphyrin Analogues Ionized Forms by Experiment and Quantum Chemistry: 5,10,15,20‐Tetraphenyl‐21‐thia‐ and 5,10,15,20‐Tetraphenyl‐21,23‐Dithiaporphyrins
Authors: Pukhovskaya Svetlana G. , Ivanova Yulia B. , Syrbu Sergey A. , Plotnikova Anna O. , Kuzmin Ilya A. , Pimenov Oleg A. , Shlykov Sergey A. 
Published: December 2022

AbstractModification of porphyrins by a replacement of N atom(s) with a heteroatom(s) resulted in the so called heteroporphyrins which exhibit interesting physicochemical properties. In this work, the spectral properties of ions and neutral forms of 5,10,15,20‐tetraphenyl‐21,23‐dithia porphyrin (S2PP) and 5,10,15,20‐tetraphenyl‐21‐thia‐porphyrin (HSPP) have been investigated. According to the spectrophotometric analysis in acetonitrile – perchloric acid solution, the dication H2S2PP2+ reveals an ability to coordinate two ClO4− anions, which was not found for H3SPP2+. This fact, as observed in the UV‐Vis absorption spectra, indicates the possibility of exhibiting chemosensory properties of S2PP molecules. The geometries of the neutral and ionized forms were derived from B3LYP/cc‐pVTZ calculations. The perimeters of the cavities increase in the series: H2PP→HSPP→S2PP. This trend is kept in case of the ionized forms; the protonation expands the cavity perimeter. Electron density distributions were analyzed in terms of quantum theory of atoms in molecules (QTAIM). The UV‐vis spectra simulated on the base of the TD‐DFT calculations match the experimental results.
Charge Transfer as Bridging Correlator for DSSC Efficiency and NLO Property
Authors: Sharma Suryapratap J. , Sekar Nagaiyan 
Published: December 2022

AbstractThe efficacy of dipyridyl and diphenylamine sensitizers in dye‐sensitized solar cells (DSSCs) is linked to trends in DFT‐based charge transfer and non‐linear optical (NLO) properties. We chose DFT and Time‐dependent‐DFT methods. The planarity is improved by replacing the phenyl ring at the donor site with a thiophene ring. Similarly, cyanoacetic acid acceptor improves planarity over rhodamine‐3‐acetic acid acceptor. In all cases in HOMO, the electron density is located at the donor and some part of the spacer, and in LUMO, it is shifted to the acceptor. Bond length alternation, bond order alternation, quinoid character, effective charge transferred distance, effective charge transferred, chemical potential, electrophilicity index, and electron correlation descriptors showed direct relation, while hardness and hyperhardness showed an inverse relation with NLO properties. We observed higher β0 and γ for thiophene‐based sensitizers ranging from 248.81×10−30 to 440.92×10−30 esu and 777.82×10−36 to 1442.69×10−36 esu, respectively. Likewise, more negative values of ΔGinject (−0.630 to −0.752 eV), a smaller value of ΔGreg (0.662 to 0.790 eV), and higher LHE (0.959 to 0.976) are observed for thiophene‐based sensitizers. Also, thiophene‐based sensitizers showed shorter Ti−O bond lengths than their phenyl‐based sensitizers. Photovoltaic parameters are directly related to DSSC efficiency and NLO properties.
3D Print Polyaniline/Gelatin Hydrogels as Wearable Multifunctional Sensors
Authors: Sun Shuang , Hao Feiyue , Maimaitiyiming Xieraili 
Published: December 2022

AbstractGelatin is a good biocompatible material. Polyaniline is a polymer compound that can conduct electricity when doped with phytic acid (Ph). However, there are few reports on PANI and gelatin hydrogels. In this paper, a new synthesis method of polyaniline (PANI) was developed, which greatly improved the gas sensitivity while maintaining the excellent quality of PANI. PANI and gelatin were composited into a unified 3D network. ANI synthesized phytic acid‐doped PANI and then mixed gelatin with it to make wearable 3D printed sensors. Multilayer structures prepared by 3D printing with PANI ink are free of build‐up. A PANI hydrogel sensor was fabricated using a 3D printing method with a stress sensing range of 0–899.8 MPa, a strain sensing range of 0–764.4 % sensitivity GF=1.4, and a TCR=−1.3 for temperature 8.4–29 °C. The sensor can accurately detect the motion of large strains in human knee joints and small strains in finger bending. In this study, a simple “green” method was used to convert inexpensive gelatin into a high‐performance multifunctional wearable sensor, which can be recycled and provided application prospects for sustainable and environmentally friendly biocompatible materials in the future.
Effect of ‘Fluorophenylammonium’ and ‘Fluorophenethylammonium’ as Spacer on the Photo(electro)chemical and Photocatalytic Behaviour of Mixed Halide Based Layered Perovskites
Authors: Mondal Arindam , Gupta Satyajit 
Published: December 2022

AbstractTwo‐dimensional lead (Pb2+) based halide perovskites (2D‐PbHaPs) with a structural formula of R2PbX4 (where R=organic amine and X=Cl, Br or I) represents a ‘layered’ structure, having better stability compared to three‐dimensional lead halide perovskites (3D‐PbHaPs) such as APbX3 (where A=methylammonium and X=Cl, Br or I). The choice of ‘R’ site, which acts as a ‘spacer’ in the PbX64− octahedral framework, is critical in determining the optical and electrical properties of the 2D‐PbHaP based semiconductors. In this study, two different spacers [4‐fluorophenethylammonium‐FC6H4−CH2−CH2−NH3+; abbreviated as FPEA and 4‐fluorophenylammonium‐FC6H4−NH3+; abbreviated as FPA] are selected as ‘R’ site of the 2D framework of ‘mixed halide’ based 2D‐PbHaP systems [(FPEA)2PbI2Br2 and (FPA)2PbI2Br2)], to examine the impact of the ‘spacer’ on the optical properties, photo(electro)chemical, and photocatalytic behavior in the form of thin‐films. The thin films were having an approximate thickness of 325±25 nm. The bandgap (EBG) and photo‐luminescence peak of (FPA)2PbI2Br2 was observed to be red‐shifted compared to (FPEA)2PbI2Br2. Chronoamperometry and linear sweep voltammetry (LSV) analysis indicated a ∼100 % improvement in the photo‐current density for (FPA)2PbI2Br2 compared to (FPEA)2PbI2Br2. Furthermore, the (FPA)2PbI2Br2 based system showed better photocatalytic activity towards degradation of methylene blue and S−S coupling reactions, compared to (FPEA)2PbI2Br2.
Balancing Ni0 and Ni2+ on γ‐Al2O3 for Efficient Steam Methane Reforming
Authors: Zhang Junjie , Xiao Zhourong , Wang Li , Zhang Xiangwen , Li Guozhu 
Published: December 2022

AbstractSteam methane reforming (SMR) is the most mature technology for hydrogen production in industry, and alumina supported nickel (Ni/Al2O3) is the most widely used catalyst. Herein, the key role of Ni valence state on the catalytic SMR performance of Ni/Al2O3 is reported. The ratio of Ni0/Ni2+ on Ni/Al2O3 is individually and effectively tuned by changing the reduction temperature after wet impregnation. Catalytic performance of Ni/Al2O3 is greatly dependent on the surface concentration of Ni0 and Ni2+. The catalyst reduced at 675 °C possesses balanced Ni0 and Ni2+ sites and exhibits superior catalytic performance, on which 60 % of methane is stably converted at 600 °C. CH4‐TPD and CO‐TPD profiles demonstrate that appropriate Ni0/Ni2+ ratio can promote the adsorption of CH4 and inhibit the moderate‐strength adsorption of CO, which leads to increased SMR activity and selectivity.
Synthesis and characterization of g‐C3N4 doped with activated carbon (AC) prepared from grape leaf litters for the photocatalytic degradation of enrofloxacin in aqueous systems
Authors: Olufemi Oluwole Adewumi , Khoza Phindile , Olatunji Olatunde Stephen 
Published: December 2022

AbstractThe composites of graphitic carbon nitride (g‐C3N4) doped with activated carbon (AC) were synthesized using the calcination method, and used as photocatalysts for the degradation of enrofloxacin in an aqueous system. The physical, morphology, and spectroscopic properties of the synthesized AC, bulk g‐C3N4, and AC/g‐C3N4 composites were characterized using x‐ray diffraction spectroscopy (XRD), Fourier transforms infrared spectroscopy (FTIR), Brunauer‐Emmett‐Teller method (BET), scanning electron microscopy, energy dispersive x‐ray mapping (SEM‐EDX‐mapping), transmission electron microscopy (TEM) with high resolution‐transmission electron microscopy (HR‐TEM), ultraviolet‐visible diffuse reflectance spectroscopy techniques (UV‐Vis DRS), photoluminescence spectroscopy (PL), and electron impedance spectroscopy (EIS). The AC/g‐C3N4 composites exhibited an extended visible light response and higher separation rate of photogenerated electron‐hole pairs compared to the bulk g‐C3N4. The 1 : 1AC/g‐C3N4 composite showed superior photocatalytic performance, nearly seven times higher than the bulk g‐C3N4 nanosheets, toward the degradation of enrofloxacin in aqueous solutions, under visible light irradiation. The high photocatalytic efficiency of AC/g‐C3N4 composites may be attributed to the role played by the significantly improved surface area, and the occurrence of high photoinduced charge separation, as revealed by the morphological and opto‐spectroscopic characterization of the synthesized composites, and photocatalysis experimental data. Furthermore, the AC/g‐C3N4 composites exhibited excellent recyclability and stability, making them potential candidates for use in environmental remediation.
Efficient Construction of Tetrahydroquinazolines via HFIP‐Promoted [1,5]‐Hydride Transfer/6‐Endo‐Trig Cyclization
Authors: Dong Fengying , Song Xiaopei , Yin Xiangcong , Wang Liang 
Published: December 2022

AbstractDescribed herein is a practical and scalable protocol for the syntheses of pharmaceutically significant tetrahydroquinazolines in good yields via cascade condensation/[1,5]‐hydride transfer/6‐endo‐trig cyclization, which features mild, salt‐free & additive‐free conditions; broad substrate scope; and chemoselective N,N‐dialkylation of primary amine with two diverse alkyl groups in one step.
Supporting Emergent Writing with Oral Storytelling Strategies
Authors: Schrodt Katie , FitzPatrick Erin , McClain Janna 
Published: December 2022

AbstractIn early childhood classrooms, little time is spent writing (Gerde et al., Early Childhood Research Quarterly, 31, 34, 2015), and students receive limited supports to enhance their writing skills (Bingham et al., Early Childhood Research Quarterly, 39, 35, 2017). In early childhood, when students experience rich writing environments where their creativity is fostered through appropriately scaffolded experiences, their understanding of the relationship between oral and written language grows (Gerde et al., Early Childhood Research Quarterly, 31, 34, 2015), their writing performance improves (Bingham et al., Early Childhood Research Quarterly, 39, 35, 2017), and their foundational literacy skills are supported (Rowe et al., The Reading Teacher, 75, 485, 2021). Oral storytelling is an example of a culturally sustaining practice (Flores & Springer, Theory Into Practice, 60, 312, 2021) that can facilitate writing development (Kirby et al., Reading & Writing Quarterly, 37, 574, 2021). Building from teaching experiences in three racially, linguistically, and socioeconomically diverse kindergarten classes in the mid‐south, this Teaching and Learning Guide demonstrates three easily implemented strategies for oral storytelling that support emergent writing. These strategies helped students leverage knowledge from their family and community resources, generate ideas for writing, add details to their oral narratives, and adopt the narrative discourse structures typically found in school‐based literature. Each strategy includes a description of the implementation, authentic examples of student responses, and suggestions for adopting this practice in other contexts.
First Experience with the Nimbus Stentretriever
Authors: Lehnen Nils C. , Paech Daniel , Zülow Stefan , Bode Felix J. , Petzold Gabor C. , Radbruch Alexander , Dorn Franziska 
Published: December 2022

Abstract
Purpose
To share our first experience with the Nimbus stentretriever, a multizone device designed to assist neurointerventionalists in handling fibrin-rich clots in endovascular stroke treatment.

Methods
We retrospectively analyzed the data of patients who were treated with the Nimbus stentretriever at our high-volume stroke center between May 2021 and May 2022. We evaluated the number of passes before Nimbus was used, the number of passes with nimbus, as well as the recanalization success before and after Nimbus according to the modified treatment in cerebral ischemia (mTICI) scale. Also, patient characteristics, procedural times and clinical outcomes were documented.

Results
A total of 21 consecutive patients were included in the study. An mTICI 2b/3 could be achieved in 76.2% and mTICI 2c/3 could be achieved in 57.1%. The mean number of passes was 3.4 before the use of Nimbus, 2.2 with Nimbus, and 5.4 for all passes with and without Nimbus and 4 occlusions (19.0%) were successfully recanalized with direct aspiration after the use of Nimbus. We observed seven subarachnoid hemorrhages (33.3%) and two cases of vasospasm.

Conclusion
In our series, the use of Nimbus resulted in successful recanalization in half of the patients after otherwise unsuccessful thrombectomy maneuvers; therefore, it should be considered as a rescue option if the maneuver with conventional stent retrievers was unsuccessful.
Neue Ansätze für naturbasierte Lösungen in Perlmuschelgewässern – eigendynamische Entsandung in einem physikalischen Modellversuch
Authors: Stelzer Sophie , Worf Dominik , Flödl Peter , Sindelar Christine , Höfler Sarah , Hauer Christoph 
Published: December 2022

ZusammenfassungIn den Flüssen der Böhmischen Masse stellt ein unausgewogenes Sedimentregime in Form eines Sedimentüberschusses zunehmend ein Problem dar. Die vorherrschenden Korngrößenfraktionen (d = 1 bis 10 mm) sind ungeeignete Lebensräume u. a. für Flussperlmuscheln (Margaritifera margaritifera), die in Restpopulationen im österreichischen Teil der Böhmischen Masse vorkommen. Neben der ökologischen Beeinträchtigung kann der oben beschriebene Sedimentüberschuss auch das Hochwasserrisiko in bestimmten Bereichen erhöhen, wodurch wiederholte Eingriffe in das Flussbett (z. B. Baggerungen) notwendig sein können. Um von rein technischen Maßnahmen zu naturnahen Lösungen überzugehen, bietet das Konzept der naturbasierten Lösungen (NbS) eine Möglichkeit, ökologische Probleme und Hochwasserrisiken zu entschärfen. Für eine effektive Maßnahmenplanung ist jedoch ein umfassendes Prozessverständnis erforderlich. Diese Studie verringert diese Defizite im Prozessverständnis mit einem physikalischen Modellversuch, in dem eine technisch optimierte NbS zur Unterstützung des natürlichen Prozesses der eigendynamischen Entsandung (EE) entwickelt wurde. EE beschreibt die Ablagerung von Sedimenten am Gewässervorland. Die Modellversuche zeigten, dass Maßnahmen am Vorland und im Gewässer die EE fördern können, indem sie den Sedimentaustrag aus dem Gewässer sowie die Ablagerung am Vorland erhöhen. Mit der entwickelten Maßnahmenanordnung können bei einem einjährlichen Hochwasser bis zu 14,7 % der insgesamt transportierten Sedimente ausgetragen werden.
Three-dimensional interfacial fracture analysis of a one-dimensional hexagonal quasicrystal coating
Authors: Zhang Xin , Zhao Minghao , Fan Cuiying , Lu C. S. , Dang Huayang 
Published: December 2022

AbstractIn this paper, the three-dimensional (3D) interfacial fracture is analyzed in a one-dimensional (1D) hexagonal quasicrystal (QC) coating structure under mechanical loading. A planar interface crack with arbitrary shape is studied by a displacement discontinuity method. Fundamental solutions of interfacial concentrated displacement discontinuities are obtained by the Hankel transform technique, and the corresponding boundary integral-differential equations are constructed with the superposition principle. Green’s functions of constant interfacial displacement discontinuities within a rectangular element are derived, and a boundary element method is proposed for numerical simulation. The singularity of stresses near the crack front is investigated, and the stress intensity factors (SIFs) as well as energy release rates (ERRs) are determined. Finally, relevant influencing factors on the fracture behavior are discussed.
The informed consent form navigator: a tool for producing readable and compliant consent documents
Authors: Bona Jonathan P. , Utecht Joseph , Kemp Aaron S. , Gan Jennifer M. , Caballero Alison , Trudeau Christopher R. , Brochhausen Mathias , James Laura 
Published: December 2022

Abstract

Background/Objective
Informed consent forms (ICFs) and practices vary widely across institutions. This project expands on previous work at the University of Arkansas for Medical Sciences (UAMS) Center for Health Literacy to develop a plain language ICF template. Our interdisciplinary team of researchers, comprised of biomedical informaticists, health literacy experts, and stakeholders in the Institutional Review Board (IRB) process, has developed the ICF Navigator, a novel tool to facilitate the creation of plain language ICFs that comply with all relevant regulatory requirements.

Methods:
Our team first developed requirements for the ICF Navigator tool. The tool was then implemented by a technical team of informaticists and software developers, in consultation with an informed consent legal expert. We developed and formalized a detailed knowledge map modeling regulatory requirements for ICFs, which drives workflows within the tool.

Results:
The ICF Navigator is a web-based tool that guides researchers through creating an ICF as they answer questions about their project. The navigator uses those responses to produce a clear and compliant ICF, displaying a real-time preview of the final form as content is added. Versioning and edits can be tracked to facilitate collaborative revisions by the research team and communication with the IRB. The navigator helps guide the creation of study-specific language, ensures compliance with regulatory requirements, and ensures that the resulting ICF is easy to read and understand.

Conclusion:
The ICF Navigator is an innovative, customizable, open-source software tool that helps researchers produce custom readable and compliant ICFs for research studies involving human subjects.
The BIAT and the AMP as measures of racial prejudice in political science: A methodological assessment
Authors: Clayton Katherine , Horrillo Jordan , Sniderman Paul M. 
Published: December 2022

AbstractPolitical scientists often use measures such as the Brief Implicit Association Test (BIAT) and the Affect Misattribution Procedure (AMP) to gauge hidden or subconscious racial prejudice. However, the validity of these measures has been contested. Using data from the 2008–2009 ANES panel study—the only study we are aware of in which a high-quality, nationally representative sample of respondents took both implicit tests—we show that: (1) although political scientists use the BIAT and the AMP to measure the same thing, the relationship between them is substantively indistinguishable from zero; (2) both measures classify an unlikely proportion of whites as more favorable toward Black Americans than white Americans; and (3) substantial numbers of whites that either measure classifies as free of prejudice openly endorse anti-Black stereotypes. These results have important implications for the use of implicit measures to study racial prejudice in political science.
Late Quaternary formation of the Miaoli Tableland in northwest Taiwan, an interplay of tectonic uplift and fluvial processes dated by OSL
Authors: Liu Shih-Hung , Lüthgens Christopher , Hardt Jacob , Hebenstreit Robert , Böse Margot , Frechen Manfred 
Published: December 2022

AbstractThe “tablelands” in Taiwan are sedimentary terraces occurring in the foreland basin west of the Neogene mountain ranges. The Miaoli Tableland consists of elevated Late Quaternary sedimentary successions, representing a change from tidal to coastal and fluvial to eolian depositional environments. The present-day morphology is a result of combined processes, including differential tectonic uplift, ongoing fluvial aggradation, and incision. Selected deposits in 10 outcrops were sampled and studied by optical dating. The deposition of fluvial sediments started after the last interglacial (<100 ka) in the southeast of the tablelands. Uplift and sea-level lowering caused a base-level fall, resulting in a stepwise redeposition of the fluvial sediments. Additionally, enhanced remobilization of fluvial sediments occurred during the cold/dry climate during Marine Oxygen Isotope Stages (MIS) 4 and 2. The depositional ages of the coastal sediments enabled the estimation of long-term uplift rates of ca. 0.5 to 3.5 mm/yr. The eolian cover sediments yielded MIS 3 (east) to Holocene ages (west). Our results provide new insight into the interplay of climate, sea-level changes, remobilization of sediments, and tectonism leading to tableland formation during the Late Quaternary.