伯胺N_(1923)与中性磷萃取剂对Zn(Ⅱ)的协同萃取

本文研究了仲碳伯胺N_(1923)与中性磷萃取剂的正庚烷溶液,从盐酸介质中对Zn(Ⅱ)的协同萃取。用斜率法及等摩尔系列法确定协萃配合物的组成为:(RNH_3Cl)_3·ZnCl_2·TBP、(RNH_3Cl)_2·ZnCl_2·DBBP,求得协萃反应的平衡常数分别为logK_(12)(TBP)=3.09,logK_(12)(DBBP)=2.90,协萃配合物的生成常数分别为logβ_(12)(TBP)=1.34,logβ_(12)(DBBP)=1.90.计算了协萃反应的热力学函数值,并对协萃配合物的IR、NMR谱进行了讨论。

HPMBP与伯胺N_(1923)对希土元素(Ⅲ)的协同萃取

本文研究了HPMBP与伯胺N_(1923)的二甲苯溶液,从盐酸介质中协同萃取希土(Ⅲ)的机理。用斜率法、恒摩尔法确定了协萃配合物的组成为:RNH_3Ln(PMBP)_4。求得关于Pr(Ⅲ)协萃反应的平衡常数及协萃配合物的生成常数分别为:logK_(12)=-1.95;logβ_(12)=3.94。实验发现,协萃系数(R)随希土元素的原子序数(Z)递变而呈现“双峰效应”。还研究了协萃配合物的IR,NMR谱。

伯胺N_(1923)与中性磷试剂对Cd(Ⅱ)的协同萃取

本文研究了伯胺N_(1923)与中性磷试剂(TBP,DBBP)的正庚烷溶液,从盐酸介质中对Cd(II)的协同萃取。用斜率法、等摩尔系列法确定协萃配合物的组成为(RN-H_3Cl)_2·CdCl_2·B,求得协萃反应的平衡常数分别为lgK_(12)(TBP)=2.13,lgK_(12)(DBBP)=2.37;有机相协萃配合物的生成常数分别为lgβ_(12)(TBP)=1.22,lgβ_(12)(DBBP)=1.41,计算了协萃反应的热力学函数,并对协萃配合物的IR,NMR谱进行了研究。

Family, Kinship and Revolution: The Russian Nobility, 1917-1923

Rendle, M. (2005). Family, Kinship and Revolution: The Russian Nobility, 1917-1923. Family and Community History. 8(1), pp.35-47. RAE2008

SELECTED CHARACTER PIECES OF FRÉDÉRIC CHOPIN (1810-1849), FRANZ LISZT (1811-1886) AND JOHANNES BRAHMS (1833-1897)

During the 19th century, Frédéric Chopin (1810-1849), Franz Liszt (1811- 1886), and Johannes Brahms (1833-1897) were among the most recognized composers of character pieces. Their compositions have been considered a significant milestone in piano literature. Frédéric Chopin (1810-1849) did not give descriptive titles to his character pieces. He grouped them into several genres such as Mazurkas, Polonaises. His Mazurkas and Polonaises are influenced by Polish dance music and inspired by the polish national idiom. Franz Liszt (1811-1886) was influenced in many ways by Chopin, and adopted Chopin’s lyricism, melodic style, and tempo rubato. However, Liszt frequently drew on non-musical subjects (e.g., art, literature) for inspiration. “Harmonies poétiques et religieuses” and “Années de pèlerinage” are especially representative of character pieces in which poetic and pictorial imagination are reflected. Johannes Brahms (1833-1897) was a conservative traditionalist, synthesizing Romantic expression and Classical tradition remarkably well. Like Chopin, Brahms avoided using programmatic titles for his works. The titles of Brahms’ short character pieces are often taken from traditional lyrical or dramatic genres such as ballade, rhapsody and scherzo. Because of his conservatism, Brahms was considered the main rival of Liszt in the Romantic Period. Brahms character pieces in his third period (e.g., Scherzo Op.4, Ballades of Op.10, and Rhapsodies of Op.79) are concise and focused. The form of Brahms’ character pieces is mostly simple ternary (ABA), and his style is introspective and lyrical. Through this recording project, I was able to get a better understanding of the styles of Chopin, Brahms and Liszt through their character pieces. This recording dissertation consists of two CDs recorded in the Dekelboum Concert Hall at the University of Maryland, College Park. These recordings are documented on compact disc recordings that are housed within the University of Maryland Library System.

Repeated mapping of reefs constructed by Sabellaria spinulosa Leuckart 1849 at an offshore wind farm site

Sabellaria spinulosa reefs are considered to be sensitive and of high conservation status. This article evaluates the feasibility of using remote sensing technology to delineate S. spinulosa reefs. S. spinulosa reef habitats associated with the Thanet Offshore Windfarm site were mapped using high resolution sidescan sonar (410 kHz) and multibeam echo sounder (<1 m2) data in 2005 (baseline), 2007 (pre-construction baseline) and 2012 (post-construction). The S. spinulosa reefs were identified in the acoustic data as areas of distinct irregular texturing. Maps created using acoustic data were validated using quantitative measures of reef quality, namely tube density (as a proxy for the density of live S. spinulosa), percentage cover of S. spinulosa structures (both living and dead) and associated macrofauna derived from seabed images taken across the development site. Statistically significant differences were observed in all physical measures of S. spinulosa as well the number (S) and diversity (H׳) of associated species, derived from seabed images classified according to the presence or absence of reef, validating the use of high resolution sidescan sonar to map these important biogenic habitats. High precision mapping in the early stages allowed for the micro-siting of wind turbines in a way that caused minimal damage to S. spinulosa reefs during construction. These habitats have since recovered and expanded in extent. The surveys undertaken at the Thanet Offshore Windfarm site demonstrate the importance of repeat mapping for this emerging industry, allowing habitat enhancement to be attributed to the development whilst preventing background habitat degradation from being wrongly attributed to the development.