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The “chi-chi” of Ginkgo biloba L. grows downward with horizontally curving tracheids having compression-wood-like features
2023 / Journal of Wood ScienceThe old Ginkgo biloba L. trees often develop cylindrical woody structures that grow downward from the underside of the large branches near the trunks. This structure is traditionally called “chi-chi” (a breast) in Japan. The structure of chi-chi has not been investigated in detail because of the rarity of such old trees of G. biloba. This study examin...
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Enhanced electrical conductivity and stretchability of ionic-liquid PEDOT:PSS air-cathodes for aluminium-air batteries with long lifetime and high specific energy
2022 / Scientific ReportsA hydrogel film, poly-3,4-ethylenedioxythiophene (PEDOT):polystyrenesulfonate (PSS), containing an ionic liquid, is used as an air–cathode for a metal-air battery and its performance is investigated. This work presents the development of the air–cathode and the characterization of its physical, chemical and mechanical properties. Moreover, in view of ...
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Microbiome-derived ethanol in nonalcoholic fatty liver disease
2022 / Nature MedicineTo test the hypothesis that the gut microbiota of individuals with nonalcoholic fatty liver disease (NAFLD) produce enough ethanol to be a driving force in the development and progression of this complex disease, we performed one prospective clinical study and one intervention study. Ethanol was measured while fasting and 120 min after a mixed meal test (MMT) in ...
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Synthetic biology based construction of biological activity-related library of fungal decalin-containing diterpenoid pyrones
2021 / Nature CommunicationsA synthetic biology method based on heterologous biosynthesis coupled with genome mining is a promising approach for increasing the opportunities to rationally access natural product with novel structures and biological activities through total biosynthesis and combinatorial biosynthesis. Here, we demonstrate the advantage of the synthetic biology method to explore...
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Peculiar High-Pressure Phase Behavior of 1-Butyl-3-Methylimidazolium Iodide
2020 / The Journal of Physical Chemistry BWe investigated the stability of the liquid phase of 1-butyl-3-methylimidazolium iodide (hereafter abbreviated as [C4mim][I]) up to 16.7 GPa at room temperature. We observed a peculiar phase transition behavior in the [C4mim][I] sample. In particular, a glassy state was formed at ~1.3 GPa; however, the reddish–brown precipitate was probably due to concentrate...
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Dimethyl ether synthesis via methanol dehydration over Ta-supported catalysts
2019 / Applied Catalysis A: GeneralDehydration of methanol to dimethyl ether (DME) and the plausible side reactions have been investigated over Ta oxide supported on alumina (Ta/Al2O3) and titania (Ta/TiO2) catalysts with a Ta-load of 1 at-Ta. nm−2. The surface atomic ratio of Ta/Al and Ta/Ti was 0.17 and 0.92, respectively; being isolated Ta species and Ta-O-Ta spreaded polymeric speci...
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Percolation effect of V2O5 nanorod/graphene oxide nanocomposite films for stable fast-switching electrochromic performances
2019 / Ceramics InternationalIn the present study, V2O5 nanorod (VR)/graphene oxide (GO) nanocomposite films that can be used as an electrochromic (EC) material have been developed using the sol-gel spin-coating method. In order to optimize the nanocomposite effect of GO consisting of the VR films on EC performances, we controlled the volume percentage of GO compared to vanadium precursor to 0...
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Electric Field and Mobile Oxygen Promote Low-Temperature Oxidative Coupling of Methane over La1–xCaxAlO3−δ Perovskite Catalysts
2019 / ACS OmegaOxidative coupling of methane (OCM) over La1–xMxAlO3−δ (M = Ca, Sr, Ba; x = 0, 0.1, 0.2, 0.3) in an electric field at low temperature (423 K) was investigated. Among the tested catalysts, the La0.7Ca0.3AlO3−δ catalyst showed the highest performance in terms of C2H6 + C2H4 yield (11.1%). Surface mobile oxygen species (O22– or O&nd...
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Monodisperse Five-Nanometer-Sized Detonation Nanodiamonds Enriched in Nitrogen-Vacancy Centers
2019 / ACS PublicationsNanodiamonds containing negatively charged nitrogen-vacancy (NV–) centers are versatile nanosensors thanks to their optical and spin properties. While currently most fluorescent nanodiamonds in use have at least a size of a few tens of nanometers, the challenge lies in engineering the smallest nanodiamonds containing a single NV– defect. Such a tiny nan...
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Development of rapid method to assess microbial quality ofminimally processed pomegranate arils using FTIR
2018 / Sensors and Actuators B: ChemicalFourier transform infrared spectroscopy (FTIR) spectra were correlated with microbial quality of min-imally processed pomegranate (Punica granatum) arils stored at 10◦C using chemometrics. FTIR dataprocessed in three ways i.e. FTIR spectrum, first derivative for FTIR spectrum and peak integrated data ofFTIR spectrum was used as independent variables for preparing r...
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Enantiomeric characterization of herbicide lactofen: Enantioseparation, absolute configuration assignment and enantioselective activity and toxicity
2018 / ChemosphereChiral herbicides consist of two or more enantiomers, which usually differ in their biological properties and behave enantioselectively in biochemical process. Scant studies have been published in the past decades to characterize the enantiomers of herbicide lactofen. In this study, a laboratory method was developed to prepare the lactofen enantiomers using normal ...
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In-Situ Monitoring of Sol-Gel Transition by Temperature-dependent VCD Method: Signal Enhancement Induced by Gelation
2018 / Chemical LettersTemperature-dependent vibrational circular dichroism (VCD) measurements were performed in situ during the solgel transformation of a chiral low-molecular weight gelator, N,N'-diperfluoroheptanoyl-1,2(R,R)- or -1,2(S,S)-diaminocyclohexane in CD3CN. No VCD signal was detected for an isotropic acetonitrile solution of the gelator above 45 °C, while clear peaks...
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Synthesis and structure analysis of ferrocene‐containing pseudopeptide
2018 / Peptide ScienceFerrocene with its aromaticity and facile redox properties is an attractive moiety to be incorporated into functional moieties. Medicinal applications of ferrocene are well known and ferrocene itself shows cytotoxic and antianemic properties. In this article, we will describe the synthesis and the structure analysis of two pseudopeptides containing a ferrocene moie...
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Stereochemistry (and Conformation) of Nucleosides and Their Synthetic Precursors by Vibrational Circular Dichroism.
2018 / Current protocols in nucleic acid chemistryThe chemistry of artificial nucleosides is associated with the difficulties in the characterization of the stereochemistry and conformation of their furanose ring moiety. This unit describes how to use vibrational circular dichroism (VCD) spectroscopy to identify the three‐dimensional structure of nucleosides. The experimental part of this protocol is dedicated to ...
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Enantiomeric characterization of herbicide lactofen: Enantioseparation, absolute configuration assignment and enantioselective activity and toxicity
2018 / ChemosphereChiral herbicides consist of two or more enantiomers, which usually differ in their biological properties and behave enantioselectively in biochemical process. Scant studies have been published in the past decades to characterize the enantiomers of herbicide lactofen. In this study, a laboratory method was developed to prepare the lactofen enantiomers using normal ...
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