bluuebunny/crossref_metadata_2025_split huggingface dataset:
Highly Reliable Diamond MEMS Dual Sensor for Magnetic Fields and Temperatures with Self‐Recognition Algorithms
Authors: Zhang Zilong , Gu Keyun , Chen Guo , Sang Liwen , Teraji Tokuyuki , Koide Yasuo , Koizumi Satoshi , Toda Masaya , Liao Meiyong 
Published: April 2024

AbstractNearly all sensors inevitably suffer from environmental influence such as temperature fluctuation. To precisely process the external signals, independent temperature compensation devices or electronic circuits are usually required, making the overall system and algorithms sophisticated. Especially, when the environment temperature is as high as over 200 °C, both the sensors and temperature‐compensation devices encounter the reliability problem. In this work, an intelligent multifunctional sensor utilizing single‐crystal diamond (SCD) microelectromechanical (MEMS) resonators is demonstrated that can sense both magnetic fields and temperatures up to 300 °C, independently. The strategy is to integrate a magnetostrictive thin film and a non‐magnetic thin film on different diamond MEMS resonators on the same diamond chip for simultaneous magnetic field sensing and temperature monitoring, respectively. The multi‐resonators based on diamond MEMS offer a promising platform for multi‐parameter sensing immune to environment interference.
Expanding THz Vortex Generation Functionality with Advanced Spiral Zone Plates Based on Single‐Walled Carbon Nanotube Films
Authors: Radivon Arina V. , Katyba Gleb M. , Raginov Nikita I. , Chernykh Aleksey V. , Ezerskii Aleksei S. , Tsiplakova Elizaveta G. , Rakov Ignat I. , Paukov Maksim I. , Starchenko Vladimir V. , Arsenin Aleksey V. , Spector Igor E. , Zaytsev Kirill I. , Krasnikov Dmitry V. , Petrov Nikolay V. , Nasibulin Albert G. , Volkov Valentyn , Burdanova Maria G. 
Published: April 2024

AbstractOptical elements based on nanomaterials are becoming major avenues to satisfy the technological requirements of compact, lightweight, and tunable elements of the emerging terahertz (THz) field. A new generation of diffractive components integrating specific geometry with additional features (flexibility, stretchability, rotation, and other approaches for tuning properties) extends the functionality of wavefront control. Here, an innovative approach is demonstrated to control the THz wavefront via a layered composition of spiral zone plates (SZPs) with tunable mutual orientation and scaling. As a proof of concept, the SZP is designed using Laguerre‐Gauss mode analysis with further fabrication and experimental characterization of the resultant vortex beams. For each single SZP, a flexible element is proposed based on a thin film of single‐walled carbon nanotubes deposited on a stretchable substrate. Thus, this diffraction element can be tuned not only by rotation (along the azimuthal direction), but also by its stretching (in the radial direction). The spatial tuning of the developed SZPs (spiral zone plates) opens up an efficient, convenient, and highly customizable approach for the manipulation of vortex beams.
Tailoring Electronic Properties of 6H‐SiC with Different Composition of Silicon by First‐Principles Calculations
Authors: Sharif Muhammad N. , Yang Jingshu , Zhang Xiaokun , Tang Yehua , Yang Gui , Wang Ke‐Fan 
Published: April 2024

AbstractSilicon carbide (SiC) is used in a variety of applications including photovoltaic due to its high stability. The wide bandgap of SiC limits these applications and necessitates bandgap tuning toward lower energy for efficient solar absorption. In this regard, the electronic properties of highly stable SiC polytype 6H‐SiC are studied by first‐principles calculations. By varying the Si composition of 6H‐SiC the electronic properties are tailored. The calculated results show that increasing the Si composition of 6H‐SiC from 50% to 66.66% reduces the bandgap from 2.98 to 1.54 eV. It is observed that this reduction in bandgap occurs due to the addition of extra Si s/p orbitals which close the conduction band and valance band. From the electronic conductivity calculations, it is found that with increasing Si composition of 6H‐SiC the conductivity is improved due to higher hole density which can be verified by the spectrum peaks shifted toward near‐infrared and visible region.
Robust Superconductivity in Infinite‐Layer Nickelates
Authors: Xu Minghui , Zhao Yan , Chen Yu , Ding Xiang , Leng Huaqian , Hu Zheng , Wu Xiaoqiang , Yi Jiabao , Yu Xiaojiang , Breese Mark B.H. , Xi Shibo , Li Mengsha , Qiao Liang 
Published: April 2024

AbstractThe recent discovery of nickelate superconductivity represents an important step toward understanding the four‐decade mastery of unconventional high‐temperature superconductivity. However, the synthesis of the infinite‐layer nickelate superconductors shows great challenges. Particularly, surface capping layers are usually unitized to facilitate the sample synthesis. This leads to an important question whether nickelate superconductors with d9 configuration and ultralow valence of Ni1+ are in metastable state and whether nickelate superconductivity can be robust? In this work, a series of redox cycling experiments are performed across the phase transition between perovskite Nd0.8Sr0.2NiO3 and infinite‐layer Nd0.8Sr0.2NiO2. The infinite‐layer Nd0.8Sr0.2NiO2 is quite robust in the redox environment and can survive the cycling experiments with unchanged crystallographic quality. However, as the cycling number goes on, the perovskite Nd0.8Sr0.2NiO3 shows structural degradation, suggesting stability of nickelate superconductivity is not restricted by the ultralow valence of Ni1+, but by the quality of its perovskite precursor. The observed robustness of infinite‐layer Nd0.8Sr0.2NiO2 up to ten redox cycles further indicates that if an ideal high‐quality perovskite precursor can be obtained, infinite‐layer nickelate superconductivity can be very stable and sustainable under environmental conditions. This work provides important implications for potential device applications for nickelate superconductors.
Heparan Sulfate Chain‐Conjugated Laminin‐E8 Fragments Advance Paraxial Mesodermal Differentiation Followed by High Myogenic Induction from hiPSCs
Authors: Zhao Mingming , Taniguchi Yukimasa , Shimono Chisei , Jonouchi Tatsuya , Cheng Yushen , Shimizu Yasuhiro , Nalbandian Minas , Yamamoto Takuya , Nakagawa Masato , Sekiguchi Kiyotoshi , Sakurai Hidetoshi 
Published: April 2024

AbstractHuman‐induced pluripotent stem cells (hiPSCs) have great therapeutic potential. The cell source differentiated from hiPSCs requires xeno‐free and robust methods for lineage‐specific differentiation. Here, a system is described for differentiating hiPSCs on new generation laminin fragments (NGLFs), a recombinant form of a laminin E8 fragment conjugated to the heparan sulfate chains (HS) attachment domain of perlecan. Using NGLFs, hiPSCs are highly promoted to direct differentiation into a paraxial mesoderm state with high‐efficiency muscle lineage generation. HS conjugation to the C‐terminus of Laminin E8 fragments brings fibroblast growth factors (FGFs) bound to the HS close to the cell surface of hiPSCs, thereby facilitating stronger FGF signaling pathways stimulation and initiating HOX gene expression, which triggers the paraxial mesoderm differentiation of hiPSCs. This highly efficient differentiation system can provide a roadmap for paraxial mesoderm development and an infinite source of myocytes and muscle stem cells for disease modeling and regenerative medicine.
Carbon‐Efficient CO2Electrolysis to Ethylene with Nanoporous Hydrophobic Copper
Authors: Papangelakis Panagiotis , Shayesteh Zeraati Ali , O'Brien Colin P. , Bonnenfant Loann , Dorakhan Roham , Gabardo Christine M. , Young Daniel , Kong Jonathan , Azimi Dijvejin Zahra , Najarian Amin Morteza , Park Sungjin , Shin Heejong , Miao Rui Kai , Ip Alexander , Golovin Kevin , Sargent Edward H. , Sinton David 
Published: April 2024

AbstractElectrochemical carbon dioxide (CO2) reduction offers a low‐carbon route to ethylene, when powered from renewable energy. Yet, the best‐performing CO2electrolysis systems employ neutral or alkaline electrolytes, resulting in low conversion efficiencies, which increases downstream separation costs. High conversion rates can be achieved with acidic electrolytes, albeit at the cost ethylene faradaic efficiency (FE < 45%). As a result, achieving high ethylene selectivity simultaneously with high conversion efficiency is an unmet challenge. Here, a 3D‐nanoporous catalyst is designed to modulate water and CO2concentration at the catalyst surface, reaching higher ethylene selectivity in a forward‐bias bipolar MEA that recovers unreacted CO2. An ethylene FE of 63% at 150 mA cm−2is reported, and by optimizing for conversion efficiency, an ethylene FE of 58% along with an overall conversion efficiency of 82% is achieved. Stable performance for > 65 h at industrial current densities combined with a high ethylene concentration in the product stream showcases promising industrial viability.
Catalytic Asymmetric Redox‐Neutral [3+2] Photocycloadditions of Cyclopropyl Ketones with Vinylazaarenes Enabled by Consecutive Photoinduced Electron Transfer
Authors: Wei Wenhui , Li Chunyang , Fan Yifan , Chen Xiaowei , Zhao Xiaowei , Qiao Baokun , Jiang Zhiyong 
Published: April 2024

AbstractConsecutive photoinduced electron transfer (ConPET) is a powerful and atom‐economical protocol to overcome the limitations of the intrinsic redox potential of visible light‐absorbing photosensitizers, thereby considerably improving the substrate and reaction types. Likely because such an exothermic single‐electron transfer (SET) process usually does not require the aid of chiral catalysts, resulting in an inevitable racemic background reaction, notably, no enantioselective manifolds have been reported. Herein, we report on the viability of cooperative ConPET and chiral hydrogen‐bonding catalysis for the [3+2] photocycloaddition of cyclopropyl ketones with vinylazaarenes. In addition to enabling the first use of olefins that preferentially interact with chiral catalysts, this catalysis platform paves the way for the efficient synthesis of pharmaceutically and synthetically important cyclopentyl ketones functionalized by azaarenes with high yields, ees and dr. The robust capacity of the method can be further highlighted by the low loading of the chiral catalyst (1.0 mol %), the good compatibility of both 2‐azaarene and 3‐pyridine‐based olefins, and the successful concurrent construction of three stereocenters on cyclopentane rings involving an elusive but important all‐carbon quaternary.
Utilization of hazelnut oil oleogels for the preparation of milk couverture type compound chocolates: Composition, properties, and sensory evaluations
Authors: Yılmaz Emin , Öz Ceren 
Published: April 2024

AbstractThe aim of this study was to use oleogels in compound chocolates. A control sample with cocoa butter (CNT) and two compound chocolates with hazelnut oil‐sunflower wax oleogel (SWO‐CC), and polyglycerol stearate oleogel (PGSO‐CC) were prepared with the same recipe. The main properties and compositions of the samples were quite similar. While CNT sample included only 37.97% of total unsaturated fatty acids, it was 74.19 and 63.08% in the SWO‐CC and PGSO‐CC, respectively. The melting peak temperatures were 32.1, 25.4, and 23.8°C for CNT, SWO‐CC and PGSO‐CC. The samples had 11.75%, 74.25%, and 74.25% shape retention index values at 60°C. Clearly compound chocolates melted at lower temperatures, but retained their shape at higher temperatures. After 15‐day temperature fluctuation storage, no fat bloom was developed. Rheological data showed that the PGSO‐CC sample was stiffer among all, and the compound chocolates melted slowly up to 40°C, but CNT melted sharply at 38°C. Further, the PGSO‐CC sample showed a lubricating behavior. Although CNT sample included 7 volatile aromatics, SWO‐CC and PGSO‐CC samples had 17 and 14 compounds, respectively. Trained panel described the samples with 13 attributes, and most profoundly the compound chocolates had lower shape, surface gloss, coffee, bitter, cooling, hardness scores, and higher coating scores. Consumer test revealed that compound chocolates had lower appearance scores, and equal aroma scores. The flavor score and acceptability were highest for the PGSO‐CC sample. Overall, this study proved that heat stable and sensorially acceptable compound chocolates could be prepared from the oleogels.
No‐organic solvent, no‐fluorinated waterborne superhydrophobic coatings based on SiO2 and IBTS
Authors: Yang Yu , Zhang Hai , Cao Lei , Meng Weikai , Ma Xinru , Li Xinzi , Zheng Junping , Liu Xiaofei 
Published: April 2024

AbstractWaterborne superhydrophobic coatings have attracted widespread attention. However, organic solvents, fluorine‐containing compounds, and complex operational technologies hinder superhydrophobic coatings development severely. Herein, A simple method of preparing water‐based superhydrophobic coatings by one‐step spraying without organic solvent and fluorine is reported. The particles of silicon dioxide (SiO2) was modified by isobutyltriethoxysilane (IBTS), then combined with waterborne acrylic polyurethane (WPUA) and phenolic resin (PF), baked at 110°C to fabricate superhydrophobic coatings. According to the contact Angle (CA), hardness, adhesion, and other parameters, the ratio of SiO2 and PF of the composite coatings was optimized. Results showed that the superhydrophobicity and physical properties of the coating are the most exceptional at the content of SiO2 is 0.6 g, and the PF is 25%. In addition, related experimental results show that the coatings have good water resistance and self‐cleaning ability, the special nano/micro structure of the coatings also endows it excellent abrasion resistance. Exceptional hydrophobicity and physical properties meeting the actual application conditions of superhydrophobic coatings. Therefore, the simple method for preparing superhydrophobic coatings has great application prospects.
The archaeology of shellfishing practices on Ua Huka, Marquesas Archipelago (French Polynesia)
Authors: Traversat Gabrielle , Conte Eric , Molle Guillaume 
Published: April 2024

AbstractShellfish remains are ubiquitous to coastal archaeological sites in the Marquesas but have seldom been the focus of dedicated investigations into their contribution to past diet and daily life. On the island of Ua Huka, in the northern group of the archipelago, people have consumed a variety of shellfish since their arrival on the island around the early 12th century AD. By analysing assemblages from five coastal sites spanning from the early settlement until the 18th century and using an archaeomalacological approach (precise taxonomic identification, coupled quantification methods, observation of taphonomic processes, biometry), we attempt to recount the exploitation processes of this resource, from the initial gathering stage to the final discarding of the shell. We further explore inter‐site and temporal variability in prey choice. Coupled with ethnographic accounts from European observers and insightful testimonies from current inhabitants of the island regarding present‐day practices, we highlight the persistence of choices regarding species selection, breakage patterns and cooking processes on an island that has seen major subsistence changes since European contact.
Entwicklung eines Wickelverfahrens für Bauteile aus kurzfaserbewehrtem Textilbeton
Authors: Kufner Fabian , Rucker‐Gramm Petra , Horstmann Michael , Hämmelmann‐Breul Erika , Breul Frank , Hahn Eric , Hettwer Stefan , Pachow Ulrich 
Published: April 2024

AbstractIm Forschungsprojekt WiFaPu (Wickelverfahren für hochbewehrten Faserbeton am Beispiel eines Pumpensumpfes) wurde ein Wickelverfahren entwickelt, das die Vorteile von Glasfaserbeton und Textilbeton hinsichtlich der Herstellungsprozesse und des Tragverhaltens vereint. Im Verfahren wird der Feinbeton zusammen mit am Sprühkopf eingeblasenen, geschnittenen Kurzfasern auf eine Trägerschicht und die textile Bewehrung aufgespritzt, um eine dünne kurzfaserbewehrte Textilbetonschicht definierter Dicke zu erzeugen, die in einem quasikontinuierlichen Prozess zu einem Bauteil mit einer beliebigen Querschnittsdicke aufgewickelt wird. Der Beitrag berichtet über die Herausforderungen bei der Entwicklung des Wickelverfahrens und der zugehörigen Abstimmung der Materialkomponenten, um dauerhafte Bauteile mit einfachen Geometrien, akzeptablen Oberflächen und reduziertem CO2‐Fußabdruck zu produzieren. Als Demonstratorbauteile des Verfahrens werden Pumpensümpfe hergestellt und diese hinsichtlich der Tragfähigkeit und Gebrauchstauglichkeit untersucht. Gemäß den experimentellen Belastungsversuchen von kritischen Bauteilbereichen ergeben sich Bauteile mit hoher Tragfähigkeit. Befüllversuche zeigen, dass im Wickelverfahren gebrauchstaugliche Pumpensümpfe hergestellt werden können. Die insgesamt hohe Wasserundurchlässigkeit der dünnwandigen Bauteile wird durch Feinbetone mit geringer Wassereindringtiefe sowie sehr geringe Rissbreiten mit hohem Selbstheilungspotenzial ermöglicht.
Continuous design and technoeconomic assessment of commercial‐scale biorefinery processes for the production of succinic acid
Authors: Barbosa Arthur V. L. , Paredes Márcio L. L. , Alijó Pedro H. R. , Sardou Ana C. O. , Maia Jeiveison G. S. S. , Bastos João B. V. 
Published: April 2024

AbstractSuccinic acid is recognized as a key component in the production of various commercially important chemical commodities. Technical‐economic analysis can provide valuable insights into the feasibility of large‐scale biochemical production of succinic acid. In this study, the effects of scale on the design of a biorefinery using sugarcane bagasse were evaluated using a detailed process modeling methodology. Four processes were simulated and compared, three based on patents from biosuccinic acid (bio‐SA) manufacturing companies and one based on a process economic program report (PEP). This methodology allowed for the analysis of scale benefits for each technological route. A comprehensive economic evaluation was conducted by comparing the biochemical processes in terms of investment and production costs, as well as the minimum selling price (MSP) of bio‐SA. Results show that the MSP of more promising process designs ranged from 3105 to 2095 $ t−1, which is compatible with the cost of petrochemical‐based succinic acid. Moreover, for capacities above 90 kt year−1, the MSP remains virtually constant, and every process evaluated revealed a breakdown in the project economy of scale. A sensitivity and risk analysis was carried out to evaluate the impacts of several process parameters on the project's technoeconomic analysis, resulting in bio‐SA selling price and investment costs as parameters with the highest impact on economic viability.
Heterocyclic fluorescent Schiff base chemosensors for the detection of Fe(III) and Cu(II) ions
Authors: Sambamoorthy Santhi , Thamaraichelvan Geetha , Karikalan Abinaya , Kumar Saranya Srinivasa 
Published: April 2024

AbstractTwo new Schiff bases were synthesized from 1‐(2,4‐dihydroxyphenyl)ethanone and pyridine derivatives. Both compounds were characterized using infrared, UV–Vis., 1H NMR, 13C NMR and mass spectral studies. Density functional theory (DFT) calculations were performed for both the Schiff bases with 6‐31G(d, p) as the basis set. Vibrational frequencies calculated using the theoretical method were in good agreement with the experimental values. Both the Schiff bases were highly fluorescent in nature. The cation‐recognizing profile of the compounds was investigated in aqueous methanol medium. The Schiff base 4‐(1‐(pyridin‐4‐ylimino)ethyl)benzene‐1,3‐diol (PYEB) was found to interact with Fe(III) and Cu(II) ions, whereas the Schiff base 4,4′‐((pyridine‐2,3‐diylbis(azanylylidene))bis(ethan‐1‐yl‐1‐ylidene))bis(benzene‐1,3‐diol) (PDEB) was found to detect Cu(II) ions. The mechanism of recognition was established as combined excited state intramolecular proton transfer (ESIPT)–chelation‐enhanced fluorescence (CHEF) effect and chelation‐enhanced quenching (CHEQ) process for the detection of Fe(III) and Cu(II) ions, respectively. The stability constant of the metal complexes formed during the sensing process was determined. The limit of detection for Fe(III) and Cu(II) ions with respect to Schiff base PYEB was found to be 1.64 × 10−6 and 2.16 × 10−7 M, respectively. With respect to Schiff base PDEB, the limit of detection for Cu(II) ion was found to be 4.54 × 10−4 M. The Cu(II) ion sensing property of the Schiff base PDEB was applied in bioimaging studies for the detection of HeLa cells.
Rapid spectrophotometric detection for optimized production of landomycins and characterization of their therapeutic potential
Authors: Chappell Todd C. , Maiello Kathleen G. , Tierney Allison J. , Yanagi Karin , Lee Jessica A. , Lee Kyongbum , Mace Charles R. , Bennett Clay S. , Nair Nikhil U. 
Published: April 2024

AbstractMicrobial‐derived natural products remain a major source of structurally diverse bioactive compounds and chemical scaffolds that have the potential as new therapeutics to target drug‐resistant pathogens and cancers. In particular, genome mining has revealed the vast number of cryptic or low‐yield biosynthetic gene clusters in the genus Streptomyces. However, low natural product yields—improvements to which have been hindered by the lack of high throughput methods—have slowed the discovery and development of many potential therapeutics. Here, we describe our efforts to improve yields of landomycins—angucycline family polyketides under investigation as cancer therapeutics—by a genetically modified Streptomyces cyanogenus 136. After simplifying the extraction process from S. cyanogenus cultures, we identified a wavelength at which the major landomycin products are absorbed in culture extracts, which we used to systematically explore culture medium compositions to improve total landomycin titers. Through correlational analysis, we simplified the culture optimization process by identifying an alternative wavelength at which culture supernatants absorb yet is representative of total landomycin titers. Using the subsequently improved sample throughput, we explored landomycin production during the culturing process to further increase landomycin yield and reduce culture time. Testing the antimicrobial activity of the isolated landomycins, we report broad inhibition of Gram‐positive bacteria, inhibition of fungi by landomycinone, and broad landomycin resistance by Gram‐negative bacteria that is likely mediated by the exclusion of landomycins by the bacterial membrane. Finally, the anticancer activity of the isolated landomycins against A549 lung carcinoma cells agrees with previous reports on other cell lines that glycan chain length correlates with activity. Given the prevalence of natural products produced by Streptomyces, as well as the light‐absorbing moieties common to bioactive natural products and their metabolic precursors, our method is relevant to improving the yields of other natural products of interest.