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  1. 1921
    “…Ring-strain in cyclic organic molecules is well-known to influence their chemical reactivity. …”
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  2. 1922
    “…The evolution of optical instrumentation, in particular large-scale ring laser installations, such as G-ring and ROMY (ROtational Motion in seismologY), and their geoscientific application have contributed significantly to the emergence of this scientific field. …”
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  3. 1923
    “…The readily available starting materials participate in tandem Prins addition/ring expansion/1,2-silyl shift to grant access to bicyclo[4.2.0]octanes and bicyclo[3.2.0]heptanes, which are common motifs in terpenoid natural products. …”
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  4. 1924
    “…Some of the most useful degradable materials are aliphatic polyesters, polycarbonates and polyamides, which are often prepared via ring-opening (co)polymerisation (RO(CO)P) using an organometallic catalyst. …”
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  5. 1925
    “…The rotaxane where only one station is available for two rings exhibits a rich coconformational dynamics, unveiled by an integrated experimental and computational approach. …”
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  6. 1926
    “…The rotational flexibility of ferrocene is achieved using combinations of ferrocene-tethered ammonium and 30-membered ring dibenzo-crown ether. By contrast, ferrocene was locked in the complex with an 18-membered ring dibenzo-crown ether and CH(2)Cl(2). …”
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  7. 1927
    “…PURPOSE: The aim of this work was to study Kayser-Fleischer [KF]-like rings in patients with hepatic or cholestatic liver disease and to find out the relation between serum bilirubin level and the presence of KF like ring in these patients. …”
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  8. 1928
    “…However, researches on topological series coupled ring resonators (T-SCRR) have been much less discussed. …”
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  9. 1929
    “…Here, we show that, contrary to such a common wisdom, decoherence suppression can be intermittently achieved on a limited time scale, without the need for any dark state, when the atom is coupled to a chiral ring environment, leading to a highly non-exponential staircase decay. …”
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  10. 1930
    “…The six-membered ring (SMR) is a common structure unit for numerous material systems. …”
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  11. 1931
    “…Constriction of the cytokinetic ring, a circular structure of actin filaments, is an essential step during cell division. …”
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  12. 1932
    “…PURPOSE: To describe a novel technique of phacoemulsification in morgagnian cataract using capsular tension ring (CTR). METHODS: This was a retrospective, non-comparative, clinical interventional study. …”
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  13. 1933
    “…Introduction: The purpose of this study is to report on infection with anterior subcutaneous internal pelvic fixation (INFIX) for pelvic ring injuries and the outcomes of treatment. Methods: An IRB-approved retrospective study was performed using trauma databases of a level one and level two trauma center from 2012–2018. …”
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  14. 1934
    “…Related ring expanded systems including those based on naphthalene and biphenyl cores are also described. …”
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  15. 1935
    “…Here, we describe a subset of compounds containing a single aromatic ring, like dopamine, ZPDm, gallic acid, or entacapone, which act as molecular chaperones against α-synuclein aggregation. …”
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  16. 1936
  17. 1937
    “…BACKGROUND: Increasing numbers of posterior pelvic ring fractures, especially in elderly patients, demonstrate the need for soft tissue protecting surgical techniques. …”
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  18. 1938
  19. 1939
    “…We present a case of a signet ring cell carcinoma arising from an ileal pouch.…”
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  20. 1940
    por Tiwari, Diksha, Giordano, Paolo
    Publicado 2021
    “…Supremum, infimum and hyperlimits of Colombeau generalized numbers in this journal. Since the ring [Image: see text] of Robinson-Colombeau is non-Archimedean and Cauchy complete, a classical series [Formula: see text] of generalized numbers [Image: see text] is convergent if and only if [Formula: see text] in the sharp topology. …”
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