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| 1 | A patient with glucocorticoid hypersensitivity syndrome显示文摘To the Editor:Primary generalized glucocorticoid hypersensitivity is a rare condition characterized by generalized,partial target-tissue hypersensitivity to glucocorticoids.Therefore,low concentration of glucocorticoids is sufficient to effectively maintain the patient’s cell physiological effects and to suppress the hypothalamic-pituitary-adrenal axis.Our study aims to provide some insight into when glucocorticoid hypersensitivity should be considered and how to diagnose it.We also propose a diagnostic flow chart for glucocorticoid hypersensitivity for the first time based on our experience and previous literature review.The study was reviewed and approved by the Institutional Review Board of Huashan Hospital,Fudan University(No.KY2020-049). | Chenwei Wu Anran Ma Quanya Sun Xiaolong Zhao | 2022 | Chinese Medical Journal2022，135，21： | 0 |
| 2 | Fe-N_(x) sites coupled with core-shell FeS@C nanoparticles to boost the oxygen catalysis for rechargeable Zn-air batteries显示文摘The development of efficient single-atom catalysts(SACs) for the oxygen reduction reaction(ORR)remains a formidable challenge,primarily due to the symmetric charge distribution of metal singleatom sites(M-N_(4)).To address such issue,herein,Fe-N_(x) sites coupled synergistic catalysts fabrication strategy is presented to break the uniform electronic distribution,thus enhancing the intrinsic catalytic activity.Precisely,atomically dispersed Fe-N_(x) sites supported on N/S-doped mesoporous carbon(NSC)coupled with FeS@C core-shell nanoparticles(FAS-NSC@950) is synthesized by a facile hydrothermal reaction and subsequent pyrolysis.Due to the presence of an in situ-grown conductive graphitic layer(shell),the FeS nanoparticles(core) effectively adjust the electronic structure of single-atom Fe sites and facilitate the ORR kinetics via short/long-range coupling interactions.Consequently,FAS-NSC@950displays a more positive half-wave potential(E_(1/2)) of 0.871 V with a significantly boosted ORR kinetics(Tafel slope=52.2 mV dec^(-1)),outpacing the commercial Pt/C(E_(1/2)=0.84 V and Tafel slope=54.6 mV dec^(-1)).As a bifunctional electrocatalyst,it displays a smaller bifunctional activity parameter(ΔE) of 0.673 V,surpassing the Pt/C-RuO_(2) combination(ΔE=0.724 V).Besides,the FAS-NSC@950-based zincair battery(ZAB) displays superior power density,specific capacity,and long-term cycling performance to the Pt/C-Ir/C-based ZAB.This work significantly contributes to the field by offering a promising strategy to enhance the catalytic activity of SACs for ORR,with potential implications for energy conversion and storage technologies. | Katam Srinivas Zhuo Chen Anran Chen Fei Ma Ming-qiang Zhu Yuanfu Chen | 2024 | Journal of Energy Chemistry2024，90，3： | 0 |
| 3 | New class of high-entropy pseudobrookite titanate with excellent thermal stability,low thermal expansion coefficient,and low thermal conductivity显示文摘As a type of titanate,the pseudobrookite(MTi_(2)O_(5)/M_(2)TiO_(5))exhibits a low thermal expansion coefficient and thermal conductivity,as well as excellent dielectric and solar spectrum absorption properties.However,the pseudobrookite is unstable and prone to decomposing below 1200℃,which limits the practical application of the pseudobrookite.In this paper,the high-entropy pseudobrookite ceramic is synthesized for the first time.The pure high-entropy(Mg,Co,Ni,Zn)Ti_(2)O_(5) with the pseudobrookite structure and the biphasic high-entropy ceramic composed of the highentropy pseudobrookite(Cr,Mn,Fe,Al,Ga)_(2)TiO_(5) and the high-entropy spinel(Cr,Mn,Fe,Al,Ga,Ti)_(3)O_(4) are successfully prepared by the in-situ solid-phase reaction method.The comparison between the theoretical crystal structure of the pseudobrookite and the aberration-corrected scanning transmission electron microscopy(AC-STEM)images of high-entropy(Mg,Co,Ni,Zn)Ti_(2)O_(5) shows that the metal ions(M and Ti ions)are disorderly distributed at the A site and the B site in high-entropy(Mg,Co,Ni,Zn)Ti_(2)O_(5),leading to an unprecedentedly high configurational entropy of high-entropy(Mg,Co,Ni,Zn)Ti_(2)O_(5).The bulk high-entropy(Mg,Co,Ni,Zn)Ti_(2)O_(5) ceramics exhibit a low thermal expansion coefficient of 6.35×10^(−6) K^(−1) in the temperature range of 25-1400℃ and thermal conductivity of 1.840 W·m^(−1)·K^(−1) at room temperature,as well as the excellent thermal stability at 200,600,and 1400℃.Owing to these outstanding properties,high-entropy(Mg,Co,Ni,Zn)Ti_(2)O_(5) is expected to be the promising candidate for high-temperature thermal insulation.This work has further extended the family of different crystal structures of high-entropy ceramics reported to date. | Jinyu WU Xiaohui MA Xiaoxia HU Liwen YAN Feng HOU Jiachen LIU Anran GUO | 2022 | Journal of Advanced Ceramics2022，11，10： | 0 |
| 4 | Clavukoelloids A—M,Thirteen Rare N-Containing Nardosinane Type Sesquiterpenoids from the Soft Coral Clavularia koellikeri显示文摘Thirteen new nitrogen-containing nardosinane-type sesquiterpenoids,clavukoelloids A-M(1-13)with unique acrylamide fragments vs.the reported general nardosinane-type sesquiterpenoids containing lactone,were isolated from the soft coral Clavularia koellikeri collected from the South China Sea.The structures and absolute configurations of new compounds were unambiguously determined by analysis of spectroscopic data,CP3,DP4+,ECD spectra,and X-ray diffraction.Compound 6 showed anti-inflammatory activities and hepatoprotective activities in transgenic fluorescent zebrafish. | Xiao Han Zhe Wang Anran Fu Kun Liu Zongchen Ma Xuli Tang Dahai Zhang Guoqiang Li | 2023 | Chinese Journal of Chemistry2023，41，12： | 0 |
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