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Copyright of Journal of China Medical University is the property of Journal of China Medical University Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Molecular ribbons (MRs), namely graphene nanoribbons with well-defined chemical structures, exhibit unique electronic structures and optoelectronic properties, and thus have attracted great attention in synthetic chemistry and materials science. Incorporation of the boron atom into their π-skeletons may enable modulation of electronic structures and physical properties by utilizing the electronic characteristics of the boron atom. However, it remains very challenging to synthesize boron-doped MRs in solution, due to the instability of the boron atoms toward moister and oxygen and the reduced cyclization activity of aromatic rings caused by the electron-deficient nature of the boron atoms. Thus, the structural construction and functional exploration of boron-doped MRs is severely hampered. Recently, our group have proposed a new strategy to construct boron-doped MRs, namely controlled cyclization of conjugated organoboranes. We synthesized a series of borondoped MRs using solution-phase photocyclization reaction, and two of them feature isomeric C68B2 π-skeletons with 2.2 nm in length. We found that they have sufficient Lewis acidity, and the formed Lewis acid-based adducts display the photoinduced dual-dissociation behavior in the excited state and thus photochromism property. Moreover, despite of the highly contorted topological conformations, they exhibit hole transporting ability in organic field-effect transistors. On the other hand, we developed two new boron-doped conjugated π-units and then performed precise sequential cyclization reactions, affording three boron-doped MRs with controlled edges. Their band gaps and fluorescence properties were successfully modulated, and notably, the stimulated emission behavior and amplified spontaneous emission property were achieved for one boron-doped MR, demonstrating its potential as an optical-gain lasing material. These studies not only provide a new molecular system for organic optical materials, but also open a new direction for molecular carbons. [ABSTRACT FROM AUTHOR]

Copyright of Plateau Meteorology is the property of Plateau Meteorology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Clinical Nursing in Practice is the property of Journal of Clinical Nursing in Practice (Editorial Board, Shanghai Jiao Tong University Press) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This investigation was under taken to explore probable mechanisms and signal pathways involved in diaphragm dysfunction induced by Sepsis. The rat sepsis model was constructed by injecting 8 mg/kg LPS into the abdominal cavity. Male SD rats were divided into 3 groups (n=6/group): comparing control group (Con group), LPS group (Sepsis group) and calcium Protease inhibitor pretreatment group (Calpeptin group). Each group of rats was sacrificed, and then their diaphragm tissues were quickly separated. The pathological changes of the diaphragm tissue were observed by using the hematoxylin-eosin (HE) staining method. Additionally, the mRNA expression levels ofμ-Calpain, caspase-3, Beclin-1, TNF-αand IL-6 in diaphragm tissue were detected by real-time fluorescence quantitative PCR (qRT-PCR). Under the light microscope, we could see that the diaphragm cross-section in the Con group was regular, with full and orderly muscle fibers, closely spaced muscle fibers, and nuclei distributed along the edge of the lens. In the diaphragm muscle cells of the Con group, there were intact capillary endothelium and no interstitial hyperplasia. Compared with the Con group, HE staining of the sepsis group rats with LPS for 24 h showed no obvious changes in diaphragm atrophy, but the contractiity of the diaphragm decreased, which was consistent with our previous research results. The mRNA expression levels of the above genes in sepsis group were significantly increased (P<0.05), and were significantly decreased after Calpeptin pretreatment(P<0.05) by qRT-PCR. Diaphragm muscles are prone to dysfunction during sepsis. Calpeptin, a calpain inhibitor, can significantly reduce the activation of inflammation, apoptosis and autophagy pathways induced by LPS. [ABSTRACT FROM AUTHOR]

Copyright of Plateau Meteorology is the property of Plateau Meteorology Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of High Pressure Physics is the property of Chinese Journal of High Pressure Physics Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)