scholarly journals Insertion and Substitution Chemistry at the Boron Fourth Position in Charge-Neutral Zwitterionic Tripodal Tris(methimazolyl)borate Ligands

2012 ◽  
Vol 51 (6) ◽  
pp. 3677-3689 ◽  
Author(s):  
Philip J. Bailey ◽  
Nicola L. Bell ◽  
Gary S. Nichol ◽  
Simon Parsons ◽  
Fraser White.
Keyword(s):  
Substitution Chemistry ◽  
Fourth Position

The origins of syncopation in American popular music

Popular Music ◽  
2021 ◽  
Vol 40 (1) ◽  
pp. 18-41
Author(s):  
David Temperley
Keyword(s):  
African American ◽  
Popular Music ◽  
20Th Century ◽  
19Th Century ◽  
Vocal Music ◽  
Piano Music ◽  
Historical Process ◽  
American Popular Music ◽  
The 19Th Century ◽  
Fourth Position

AbstractThe origins of syncopation in 20th-century American popular music have been a source of controversy. I offer a new account of this historical process. I distinguish between second-position syncopation, an accent on the second quarter of a half-note or quarter-note unit, and fourth-position syncopation, an accent on the fourth quarter of such a unit. Unlike second-position syncopation, fourth-position syncopation tends to have an anticipatory character. In an earlier study I presented evidence suggesting British roots for second-position syncopation. in contrast, fourth-position syncopation – the focus of the current study – seems to have had no presence in published 19th-century vocal music, British or American. It first appears in notation in ragtime songs and piano music at the very end of the 19th century; it was also used in recordings by African-American singers before it was widely notated.

Substitution chemistry of 3,5-dichloro-4 H -1,2,6-thiadiazine 4,4-ketals

2016 ◽  
Vol 57 (30) ◽  
pp. 3307-3310 ◽  
Author(s):  
Andreas S. Kalogirou ◽  
Panayiotis A. Koutentis
Keyword(s):  
Substitution Chemistry

Substitution chemistry of pentaosmium carbonyl clusters: crystal structure of H2Os5(CO)13P(OMe)3PEt3

1990 ◽  
Vol 385 (3) ◽  
pp. 387-398 ◽  
Author(s):  
Brian F.G. Johnson ◽  
Rajesh Khattar ◽  
Jack Lewis ◽  
Paul R. Raithby ◽  
Maria J. Rosales
Keyword(s):  
Crystal Structure ◽  
Carbonyl Clusters ◽  
Substitution Chemistry

scholarly journals A Solution to the Fingering Problem of Brahms Cellos Sonata No. 1 Opus 38 and Shostakovich Cello Sonata Opus 40

2014 ◽  
Vol 15 (1) ◽  
pp. 100-106
Author(s):  
Asep Hidayat Wirayudha
Keyword(s):  
Dead End ◽  
Interval Problems ◽  
Fourth Position ◽  
Main Factor ◽  
Cello Sonata

The flexibility of fingers is one main factor of responsibility on their spread ability. Considering thecello playing, the spread ability of cellists’ fingers is very important since it has a direct correlation to theirability to play the octave interval. The short- fingers cellists would find difficulties to play the octave intervalsat the first, second, third, and fourth position. Nevertheless, short-fingers are not dead-end for cellist. Thespread ability of finger, up to some extent, might be increasing through practices and exercises. It is with thisspirit that the author proposes some stratagems, which may be used to increase the spread ability of a cellist’sfingers in this section - using the octave interval problems as a case of pint. The discussion on the types andstyles of problem show that even though the octave intervals in Brahms cellos sonata No. 1 opus 38 andShostakovich cello sonata opus 40 are different in details, but fundamentally they are similar: the problemscome from the difficulty of the first and the fourth fingers to reach the proper note when the size and lengthof the fingers are limited.Solusi dari Permasalahan Fingering dalam Brahms Cellos Sonata No.1 Opus 38 danShostakovich Cello Sonata Opus 40. Kemampuan penyebaran jari pemain cello sangat penting karenamemiliki korelasi langsung dengan kemampuan mereka untuk bermain interval oktaf. Jari-jari pendekpemain cello akan menemukan kesulitan untuk bermain interval-interval oktaf di posisi pertama,kedua, ketiga, dan keempat. Namun demikian, kemampuan penyebaran jari, bisa ditingkatkan melaluipraktik dan latihan. Hal tersebut menggugah penulis untuk mengusulkan beberapa siasat baru mengenaikemampuan teknis memainkan interval dan oktav dan persoalan jarak interval dalam konteks Sonatayang dapat digunakan untuk meningkatkan kemampuan penyebaran jari seorang pemain cello. Meskipuninterval oktaf di Brahms cello sonata No 1 opus 38 dan Shostakovich cello sonata opus 40 berbeda,tetapi pada dasarnya keduanya sama: masalah datang ketika kesulitan terjadi pada jari pertama dankeempat untuk mencapai nada yang tepat ketika ukuran dan panjang jari-jari terbatas.

scholarly journals Oxidative Generation of Boron-Centered Radicals in Carboranes

2019 ◽  
Author(s):  
Harrison A. Mills ◽  
Joshua Martin ◽  
Arnold L. Rheingold ◽  
Alexander Spokoyny
Keyword(s):  
Direct Oxidation ◽  
Radical Species ◽  
Boron Cluster ◽  
Radical Intermediates ◽  
Substitution Chemistry ◽  
Indirect Observation ◽  
Electronic Environments ◽  
Oxidative Generation

<div><div><div><p>We report the first indirect observation and use of boron vertex-centered carboranyl radicals generated by the oxidation of modified carboranyl precursors. These radical intermediates are formed by the direct oxidation of a B−B bond between a boron cluster cage and an exopolyhedral boron-based substituent (e.g., −BF3K, −B(OH)2). The in situ generated radical species are shown to be competent substrates in reactions with oxygen-based radicals, dichalcogenides, and N-heterocycles, yielding the corresponding substituted carboranes containing B−O, B−S, B−Se, B−Te, and B−C bonds. Remarkably, this chemistry tolerates various electronic environments, providing access to facile substitution chemistry at both electron-rich and electron-poor B−H vertices in carboranes.</p></div></div></div>

scholarly journals ANALYSIS OF FOREIGN PARTICIPATION IN THE SHARE CAPITAL OF COMPANIES FROM THE COUNTIES OF NORTH-WEST REGION OF ROMANIA

2019 ◽  
Vol 4 (1) ◽  
pp. 7-16
Author(s):  
Mariana Sehleanu
Keyword(s):  
Statistical Data ◽  
Regional Level ◽  
Foreign Investments ◽  
Share Capital ◽  
North West ◽  
The Third ◽  
West Region ◽  
Opposite Pole ◽  
Level Of Economic Development ◽  
Fourth Position

Foreign investments represent a well known topic in the literature which has resulted from their economic, financial, technological, managerial and social contribution at the national and regional level of the receptive country. North-West region is part of the richer and more developed regions of Romania. Based on the statistical data provided by NTRO (2018, p.24), North-West region of Romania is ranked on the third position by the number of companies with foreign participation in the share capital and on the fourth position in terms of the value of the total subscribed capital in companies with foreign participation. The main objective of our study is to analyze the distribution of the number of registered companies with foreign participation in the share capital between the counties of North-West region of Romania and also to analyze the evolution of the value of subscribed capital in companies with foreign participation in the share capital within the counties of this region. We also analyzed the evolution of some selected indicators that we consider relevant for assessing the level of economic development of the counties located in North-West region of Romania. After pointing out the existing disparities in the level of development of the region’s counties, an important finding of our study is that there are major intra-regional disparities regarding both the value of subscribed capital and the number of registered companies with foreign participation in the share capital. There is a clear separation between the counties Cluj, Bihor and the rest of the region’s counties. Between 1991 and 2017, Cluj and Bihor counties attracted the largest number of foreign investors and recorded the highest values of the total subscribed capital in companies with foreign participation. At the opposite pole there are Bistriţa-Năsăud and Sălaj counties. This paper also provides a ranking of North-West region’s counties according to the two aspects regarding foreign participation, subject to analysis, i.e. the number of registered companies with foreign participation in the share capital and the value of subscribed capital.

scholarly journals An assessment of Brazilian conservation units – a second look

2012 ◽  
Vol 15 (1) ◽  
Author(s):  
José Augusto Leitão Drummond ◽  
José Luiz De Andrade Franco ◽  
Daniela De Oliveira
Keyword(s):  
Growth Rate ◽  
Protected Areas ◽  
National Parks ◽  
Rapid Growth ◽  
Sustainable Use ◽  
Conservation Unit ◽  
Conservation Units ◽  
Unit System ◽  
Rapid Growth Rate ◽  
Fourth Position

This is a second overview of the Brazilian conservation unit system for mid-2010. It updates author et al, 2009. It examines six dimensions of federal and state protected areas – age, numbers, types of units, absolute and average sizes, distribution by states and biomes, and degree of compliance with CBD-inspired goals. Major findings: (i) the system maintained a rapid growth rate; (ii) national parks and national forests are the most prominent units; (iii) distribution of units by region and biome remains unbalanced; (iv) state units grew remarkably over the last five years; (v) state units are biased towards sustainable use; (vi) sustainable use units grew more than fully protected units; (vii) Amazonia remains the most extensively protected biome; and (viii) quantitative goals of biome protection are closer to being reached. In 2010 Brazil held the fourth position globally in protected areas; it created the largest number of units between 2000 and 2010; it has the largest combined area of protected tropical formations. However, several regions and biomes remain under protected. 

Metal ion substitution chemistry in the yttrium barium copper oxide system as a probe of the superexchange pathway

1988 ◽  
Vol 110 (20) ◽  
pp. 6716-6720 ◽  
Author(s):  
Ruth. Jones ◽  
Peter P. Edwards ◽  
Martin R. Harrison ◽  
Thitinant. Thanyasiri ◽  
Ekkehard. Sinn
Keyword(s):  
Yttrium Barium Copper Oxide ◽  
Copper Oxide ◽  
Metal Ion ◽  
Barium Copper Oxide ◽  
Oxide System ◽  
Barium Copper ◽  
Substitution Chemistry ◽  
Ion Substitution ◽  
Yttrium Barium
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