다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

Crystalline metal-organic frameworks (MOFs) are formed by reticular synthesis, which creates strong bonds between inorganic and organic units. Careful selection of MOF constituents can yield crystals of ultrahigh porosity and high thermal and chemical stability. These characteristics allow the interior of MOFs to be chemically altered for use in gas separation, gas storage, and catalysis, among other applications. The precision commonly exercised in their chemical modification and the ability to expand their metrics without changing the underlying topology have not been achieved with other solids. MOFs whose chemical composition and shape of building units can be multiply varied within a particular structure already exist and may lead to materials that offer a synergistic combination of properties.

The Chemistry and Applications of Metal-Organic Frameworks

http://pubs.acs.org/doi/pdf/10.1021/cr300014x

Introduction to Metal–Organic Frameworks

Metal–organic frameworks (MOFs) are a unique class of crystalline solids comprised of metal cations (or metal clusters) and organic ligands that have shown promise for a wide variety of applications Over the past 15 years, research and development of these materials have become one of the most intensely and extensively pursued areas A very interesting and well-investigated topic is their optical emission properties and related applications Several reviews have provided a comprehensive overview covering many aspects of the subject up to 2011 This review intends to provide an update of work published since then and focuses on the photoluminescence (PL) properties of MOFs and their possible utility in chemical and biological sensing and detection The spectrum of this review includes the origin of luminescence in MOFs, the advantages of luminescent MOF (LMOF) based sensors, general strategies in designing sensory materials, and examples of various applications in sensing and detection

Luminescent metal–organic frameworks for chemical sensing and explosive detection

/pdf/metal-organic-frameworks-and-self-assembled-supramolecular-2xs948xxr9.pdf

Metal–Organic Frameworks and Self-Assembled Supramolecular Coordination Complexes: Comparing and Contrasting the Design, Synthesis, and Functionality of Metal–Organic Materials

Higher education in Jordan has been tied closely to the state-building process in the century since the modern Hashemite state’s foundation in 1921, with its explicit purpose being to educate and train high volumes of students who are competent and capable to serve as contributors to the state’s development. Though this purpose has largely been successful to date, it is becoming increasingly clear that more is needed than simply issuing degrees. In an increasingly globalized world, it is necessary to educate those who can contribute to future research arenas and labor markets over which a single state has limited control. Within this perspective, we detail the evolved societal position that higher education institutions in Jordan occupy and how that position has made such institutions a liability in the nation’s continued sustainable development. Specifically, we outline the unsustainability of impersonal, inefficient and ineffective infrastructure, centralization of policies and academic practices, lack of autonomy and/or self-governance, considerable financial dependence on the state, and a general hesitation for higher education institutions to seek boldly societal and economic impact beyond the simple production of graduates. To counter this unsustainability, we propose a three-pronged approach that can help catalyze the re-imagining of Jordan’s higher education institutions so that they become maximally effective contributors to the state’s future sustainable development. Our proposed approach is based on (i) internally decentralizing higher education institutions to enable greater autonomy and academic freedom, (ii) re-purposing these institutions to become more student-centric, and (iii) embracing diversity and academic community recognition.

/pdf/the-un-sustainability-of-higher-education-institutions-in-3zse615g2s.pdf

Kyle E. Cordova

Papers

The (Un)Sustainability of Higher Education Institutions in Jordan

Aufbau einer globalen Wissenschaftskultur – die Vietnam‐Erfahrung