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Abstract Die anionischen Komplexe (I) und (II) werden durch stöchiometrische Umsetzung entsprechender Metalltrichloride mit Na‐ oder Li‐pentamethylcyclopentadienid in THF bei anschließender Behandlung mit Ether und Tetramethylethylendiamin synthetisiert.

Abstract : Fracture by the progressive growth of incipient flaws under cyclically varying loads, i.e., by fatigue, must now be considered as the principal cause of in-service failures of engineering structures and components, whether associated with mechanical sliding and friction (fretting fatigue), rolling contact, aggressive environments (corrosion fatigue), or elevated temperatures (creep-fatigue). Of particular importance are the early stages of fatigue damage, involving the initial extension of microcracks and their subsequent growth at very low velocities, as these processes tend to dominate overall lifetime. This has been reflected by trends in fatigue research over the past five years, which have focused largely on so-called 'small cracks,' of dimensions comparable with the scale of microstructure or local plasticity, and on crack growth in the near-threshold regime, i.e., at stress intensities approaching the fatigue threshold below which cracks are presumed dormant. In addition, associated mechanistic studies have highlighted the critical role of crack tip shielding in fatigue, which arises predominantly from crack closure and deflection, and this has proved to be important in modeling aspects of environmentally-assisted cracking and behavior under variable amplitude loads, and in rationalizing the classical stress/strain-life and defect-tolerant design approaches. The series of international conferences 'Fatigue '87' covered a wide range of diverse views of the fundamental and applied aspects of fatigue. This included questions of cyclic deformation, crack initiation and propagation, small cracks, crack closure, variable amplitude effects, and environmentally-influenced behavior.

Background: Building on concepts from Complex Adaptive Systems (CAS), this paper proposes an overarching social science framework for addressing the fragmentation that exists in health and social care systems worldwide. The focus is on how relational networks might be strengthened to deliver more coordinated, integrated, whole person-centered care. The framework examines a major planned social experiment occurring in New South Wales, Australia: “All-Inclusive Care for the Elderly” (ALICE). Approach: Existing research on integrated care has largely focused on structural elements of care with mixed results (Goodwin, 2004; Burns et al., 2022). This approach has largely ignored the complex, emergent, ever-changing relational dynamics of how care is delivered. To address this gap, we merge social network theory (Granovetter, 1973; Kadushin, 2022) and relational coordination theory (Gittell and Weiss, 2004) to develop a relational network theory that addresses the complex ecosystem of health and social care delivery. Network ties involving strength, centrality, density, embeddedness, and structural holes are made “social” by the extent to which the network actors share common goals, trust, mutual respect, and engage in frequent, specific, accurate, and problem-focused communication. These relational processes both influence and are influenced by the structural network properties and impact outcomes. ALICE is an emerging, neighborhood-based, relational model of care for older people on the Central Coast of New South Wales. Traditionally, healthcare for older people has been complex, fragmented and not focused on social needs. A Relational Network Theory (RNT) framework highlights three core principles of ALICE: 1) the promotion of integrated care delivery through the use of “link workers” who conduct holistic care assessments and coordinate access to care across providers; 2) the development of integrated care communities that leverage social connections and networks through use of kiosks and community engagement officers to support older person care; and 3) a commitment to healthy place-making with local governance and engagement forums to create healthy built and natural environments to support older people in living heathy and active lives. Results: The ALICE initiative has been co-designed with residents and stakeholders from different sectors to implement an agile approach that will work in different community contexts. This is a foundational step in spreading and scaling outcomes. The relational work in creating new roles (linkage staff, engagement officers) is building the required connections and trust to meet the whole-person needs of older people. A key finding is the need to assess and map the complex social and relational network properties carefully to facilitate successful spread and sustainability. Implications: Two important implications for providers, managers, and policymakers are: 1) Recognize health and social care delivery as a complex adaptive system (CAS). 2) Co-design new care models following a framework of Relational Network Theory (RNT), building social reciprocity among all actors to reduce the current fragmentation and promote more socially connected care.

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Abstract Atmospheric CO2 levels are rising, forests are responding, and climate is changing. This combination of facts and premises may be evaluated on a range of temporal and spatial scales with the aid of computer simulators describing the interrelationships among forest vegetation, litter and soil characteristics, and meteorological variables. In this chapter, some insights into the effects of climate on the transfer of carbon and the converse, effects of carbon transfer on climate, are offered as a basis for assessing the significance of feedbacks between vegetation and climate under conditions of rising atmospheric CO2 concentration.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA New Route to the Synthesis of the Naturally Occurring Benzopentathiepin VaracinF. Dean Toste and Ian W. J. StillCite this: J. Am. Chem. Soc. 1995, 117, 27, 7261–7262Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Published inissue 1 July 1995https://pubs.acs.org/doi/10.1021/ja00132a033https://doi.org/10.1021/ja00132a033research-articleACS PublicationsRequest reuse permissionsArticle Views856Altmetric-Citations75LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (2)»Supporting Information Supporting Information Get e-Alerts

Abstract The method consists of the one‐pot sequence of Pd‐catalyzed allylic C—H bond activation followed by the enantioselective allylic substitution.