Multicomponent Reactions Among Alkyl Isocyanides, sp reactants, and sp2 Carbon Cages

Synlett ◽  
2022 ◽  
Author(s):  
Yanbang Li ◽  
William Kopcha ◽  
Antonio Rodriguez-Fortea ◽  
Jianyuan Zhang
Keyword(s):  
Multicomponent Reactions ◽  
Original Data ◽  
Carbon Cage ◽  
New Approach ◽  
Alkyl Isocyanide ◽  
Alkyl Isocyanides

We explored the reactivity and substrate scope of the reactions among an alkyl isocyanide, an sp-hybridized reactant (i.e. alkyne or allene), and a carbon cage, as a new approach to functionalize fullerenes and metallofullerenes. This account summarizes the key findings in our recent published work, and some original data for the reaction involving an isocyanide, allenes, and metallofullerene Lu3N@C80.

The Political Information Cycle

2017 ◽  
Author(s):  
Andrew Chadwick
Keyword(s):  
Original Data ◽  
Political Information ◽  
The Political ◽  
Election Campaign ◽  
News Production ◽  
New Approach ◽  
Political News ◽  
Media System ◽  
Micro Level ◽  
Key Events

Following chapter 3, the emphasis shifts toward deeper exploration of key events and processes that reveal the hybrid media system in flow. Chapter 4 proposes a new approach to political news making based on what is termed the political information cycle. The chapter examines the mediation of two extraordinary news events during the 2010 British general election campaign: the Bullygate scandal and Britain's first ever live televised prime ministerial debate. It shows how political information cycles are built on news-making assemblages that combine older and newer media logics. Using original data gathered during two intensive periods of live qualitative research, the chapter reveals how the hybrid mediation of politics now presents new opportunities for non-elite actors to mobilize and enter news production through timely interventions and sometimes direct, one-to-one, micro-level interactions with professional journalists.

Heterocyclizations via TosMIC-Based Multicomponent Reactions: A New Approach to One-Pot Facile Synthesis of Substituted Quinoxaline Derivatives

Synlett ◽  
2009 ◽  
Vol 2009 (02) ◽  
pp. 302-305 ◽  
Author(s):  
Julia Stephanidou-Stephanatou ◽  
Constantinos Tsoleridis ◽  
Constantinos Neochoritis
Keyword(s):  
Multicomponent Reactions ◽  
Facile Synthesis ◽  
One Pot ◽  
New Approach ◽  
Quinoxaline Derivatives

N-doped graphene quantum dots modified with CuO (0D)/ZnO (1D) heterojunctions as a new nanocatalyst for the environmentally friendly one-pot synthesis of monospiro derivatives

2021 ◽  
Author(s):  
Javad Safaei-Ghomi ◽  
Zahra Elyasi ◽  
Pouria Babaei
Keyword(s):  
Quantum Dots ◽  
Multicomponent Reactions ◽  
Graphene Quantum Dots ◽  
Environmentally Friendly ◽  
One Pot ◽  
New Approach ◽  
One Pot Synthesis ◽  
Doped Graphene

A new approach for the sustainable fabrication of a CuO/ZnO@N-GQDs nanocomposite as a powerful nanocatalyst for multicomponent reactions is demonstrated.

The O–C diagrams of minor planets − a new approach to modelling the rotation

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss
Keyword(s):  
Error Analysis ◽  
Time Dependence ◽  
Theoretical Work ◽  
Minor Planet ◽  
Minor Planets ◽  
New Approach ◽  
Preliminary Results ◽  
Ccd Observations

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.

Rotational Characteristics of the Green Solar Corona: 1947-1991

1994 ◽  
Vol 144 ◽  
pp. 139-141 ◽  
Author(s):  
J. Rybák ◽  
V. Rušin ◽  
M. Rybanský
Keyword(s):  
Solar Corona ◽  
World Wide ◽  
Rotation Period ◽  
Original Data ◽  
Coronal Emission ◽  
Time Intervals ◽  
Data Set ◽  
The World ◽  
Coronal Emission Line ◽  
Homogeneous Data

AbstractFe XIV 530.3 nm coronal emission line observations have been used for the estimation of the green solar corona rotation. A homogeneous data set, created from measurements of the world-wide coronagraphic network, has been examined with a help of correlation analysis to reveal the averaged synodic rotation period as a function of latitude and time over the epoch from 1947 to 1991.The values of the synodic rotation period obtained for this epoch for the whole range of latitudes and a latitude band ±30° are 27.52±0.12 days and 26.95±0.21 days, resp. A differential rotation of green solar corona, with local period maxima around ±60° and minimum of the rotation period at the equator, was confirmed. No clear cyclic variation of the rotation has been found for examinated epoch but some monotonic trends for some time intervals are presented.A detailed investigation of the original data and their correlation functions has shown that an existence of sufficiently reliable tracers is not evident for the whole set of examinated data. This should be taken into account in future more precise estimations of the green corona rotation period.

Production of New and Revised A.A.V.S.O. Charts

1979 ◽  
Vol 46 ◽  
pp. 368
Author(s):  
Clinton B. Ford
Keyword(s):  
Variable Star ◽  
Standard Form ◽  
Original Data ◽  
University Of Pennsylvania ◽  
Standard Format ◽  
Additional Information ◽  
The Gift ◽  
The University

A “new charts program” for the Americal Association of Variable Star Observers was instigated in 1966 via the gift to the Association of the complete variable star observing records, charts, photographs, etc. of the late Prof. Charles P. Olivier of the University of Pennsylvania (USA). Adequate material covering about 60 variables, not previously charted by the AAVSO, was included in this original data, and was suitably charted in reproducible standard format.Since 1966, much additional information has been assembled from other sources, three Catalogs have been issued which list the new or revised charts produced, and which specify how copies of same may be obtained. The latest such Catalog is dated June 1978, and lists 670 different charts covering a total of 611 variables none of which was charted in reproducible standard form previous to 1966.

A New Approach to the Demonstration of Oxidase-Localization Using Tannic Acid Or Catechin

1973 ◽  
Vol 31 ◽  
pp. 698-699
Author(s):  
V. Mizuhira ◽  
Y. Futaesaku
Keyword(s):  
Cross Section ◽  
Tannic Acid ◽  
Elastic Fiber ◽  
The Other ◽  
New Approach ◽  
Tissue Block ◽  
Active Reaction ◽  
The Cross

Previously we reported that tannic acid is a very effective fixative for proteins including polypeptides. Especially, in the cross section of microtubules, thirteen submits in A-tubule and eleven in B-tubule could be observed very clearly. An elastic fiber could be demonstrated very clearly, as an electron opaque, homogeneous fiber. However, tannic acid did not penetrate into the deep portion of the tissue-block. So we tried Catechin. This shows almost the same chemical natures as that of proteins, as tannic acid. Moreover, we thought that catechin should have two active-reaction sites, one is phenol,and the other is catechole. Catechole site should react with osmium, to make Os- black. Phenol-site should react with peroxidase existing perhydroxide.

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