20,052 research outputs found
Assisi. Un incontro inaspettato. Con il Cantico delle creature di san Francesco
No full textChi d’esso loco fa parole, / non dica Ascesi, ché direbbe corto, / ma Orïente, se proprio dir vuole. I versi del Paradiso dantesco che nominano Assisi, in cui nacque al mondo un sole chiamato Francesco, suonano come un pronostico, se letti nel contesto del libretto amorosissimo di Cheng. Qui Oriente e Occidente, tradizione taoista e cristianità scoprono la loro comunione grazie all’universalità del santo più venerato. A testimoniarla, in una scrittura tersa che ha la chiarità delle estati umbre, è un migrante giunto in Francia dalla Cina. Adesso è una gloria letteraria nella terra che l’ha accolto, ma quando vide per la prima volta Assisi, nel 1961, non era che un giovane esule in preda allo spaesamento. Di quell’incontro inaspettatamente abbagliante con i luoghi francescani volle serbare per sempre memoria iscrivendolo nel suo stesso nome: all’atto della naturalizzazione francese, dieci anni dopo, scelse François al posto del cinese Chi-hsien, celebrante la saggezza. Origini e approdi si pongono così per lui sotto il segno di una segreta alleanza, di cui Francesco diventa l’emblema. Se ne cercherebbe invano, in queste pagine, l’immagine agiografica tutta mansuetudine e candore. «Il Grande Vivente», lo chiama Cheng, e ne avverte la presenza di «eterno contemporaneo» soprattutto tra le rocce incorruttibili che gli fecero da giaciglio. All’intellettuale cinese istruito nella geomantica del Tao, l’antica arte di decifrare l’energia dei paesaggi, la topografia della santità – l’Eremo delle Carceri, la Porziuncola, San Damiano – manifesta subito il proprio corpo vivo e pulsante. Ecco il luogo, il mio luogo! È qui che il mio esilio avrà fine
KnowledgeSpace
No full textHaochuan Cui, Tiewei Li *, Cheng-Jun Wang * (2023). Climbing Up the Ladder of Abstraction: How to Span the Boundaries of Knowledge Space in the Online Knowledge Market?. Humanities and Social Sciences Communications. 10:351 http://dx.doi.org/10.1057/s41599-023-01774-z doi : 10.1057/s41599-023-01774-z. Data & Code: https://osf.io/epqtx
Native p-type transparent conductive CuI via intrinsic defects
No full textThe ability of CuI to be doped p-type via the introduction of native defects has been investigated using first-principles pseudopotential calculations based on density functional theory. The Cu vacancy has a lower formation energy than any of the other native defects, which include I vacancy (V(I)), Cu interstitial (Cu(i)), I interstitial (I(i)), Cu antisite (Cu(I)), and I antisite (I(Cu)). Combined with its shallow acceptor level, it offers sufficient hole concentrations in CuI. The natural band alignments as compared to zinc-blende ZnS, ZnSe, and ZnTe have also been calculated in order to further identify the p-type dopability of CuI. It is found that CuI has a relatively high valence band maximum and conduction band minimum, which also makes it easy to dope CuI p-type in terms of the doping limit rule. In addition, the small effective mass of the light hole-about 0.303m(0)-can provide high mobility and p-type conductivity in CuI. All of these results make CuI an ideal candidate for native p-type materials (C) 2011 American Institute of Physics. [doi:10.1063/1.3633220
Bidirectional Phase Transformation of Supramolecular Networks Using Two Molecular Signals
No full textReversible control of molecular self-assembly is omnipresent in adaptive biological systems, yet its realization in artificial systems remains a major challenge. Using scanning tunneling microscopy and density functional theory calculations, we show that a 2D supramolecular network formed by terthienobenzenetricarboxylic acid (TTBTA) can undergo a reversible structural transition between a porous and dense phase in response to different molecular signals (trimethyltripyrazolotriazine (TMTPT) and C60). TMTPT molecules can induce a phase transition from the TTBTA honeycomb to the dense phase, whereas a reverse transition can be triggered by introducing C60 molecules. This response stems from the selective association between signal molecules and TTBTA polymorphs. The successful realization of reversible molecular transformation represents important progress in controlling supramolecular surface nanostructures and could be potentially applicable in various areas of nanotechnology, including phase control, molecular sensing, and “smart” switchable surfaces
Influence of Al contents on the long-term corrosion behaviors of cold-sprayed Zn-xAl coatings
No full textZnsingle bondAl coating is considered one of the most economic candidates for marine static immersive corrosion protecting technology, in which the Al/Zn ratio is quite crucial to achieve a certain aggressive ions concentration corrosion. In this study, different Al contents Zn-xAl composite coatings were prepared using low-pressure dynamic cold spraying, potentiodynamic polarization and electrochemical impedance spectroscopy techniques were implied to reveal the long-term corrosion behaviors in 3.5 wt% NaCl solution and experimentally optimize the Al and Zn composition of the composite coating for marine static immersion corrosive resistance. The results showed that the weight loss kinetics curve of Zn-xAl composite coatings conforms well to a linear equation over time after logarithms, an increase in Al content leads to enhanced corrosion resistance of Zn-xAl composite coatings. After 1440 h immersion, the optimum Znsingle bond95Al composite coating, with high ECorr (−1.522 V) and low ICorr ((4.881 ± 0.98) × 10−5 A/cm2), presented the best corrosion resistance, due to the compact network passive film composing of Al(OH)3 and Al2(OH)5Cl2H2O, which slowed down mass-transfer step of Zn/Al elements
sj-docx-4-tct-10.1177_15330338211043976 - Supplemental material for MiR-18a-5p Facilitates Progression of Hepatocellular Carcinoma by Targeting CPEB3
No full textSupplemental material, sj-docx-4-tct-10.1177_15330338211043976 for MiR-18a-5p Facilitates Progression of Hepatocellular Carcinoma by Targeting CPEB3 by Mingxin Cui, Fengzhi Qu, Libing Wang, Daming Cheng and Xiaogang Liu in Technology in Cancer Research & Treatment</p
sj-pdf-1-tct-10.1177_15330338211043976 - Supplemental material for MiR-18a-5p Facilitates Progression of Hepatocellular Carcinoma by Targeting CPEB3
No full textSupplemental material, sj-pdf-1-tct-10.1177_15330338211043976 for MiR-18a-5p Facilitates Progression of Hepatocellular Carcinoma by Targeting CPEB3 by Mingxin Cui, Fengzhi Qu, Libing Wang, Daming Cheng and Xiaogang Liu in Technology in Cancer Research & Treatment</p
sj-docx-3-tct-10.1177_15330338211043976 - Supplemental material for MiR-18a-5p Facilitates Progression of Hepatocellular Carcinoma by Targeting CPEB3
No full textSupplemental material, sj-docx-3-tct-10.1177_15330338211043976 for MiR-18a-5p Facilitates Progression of Hepatocellular Carcinoma by Targeting CPEB3 by Mingxin Cui, Fengzhi Qu, Libing Wang, Daming Cheng and Xiaogang Liu in Technology in Cancer Research & Treatment</p
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