Solid and liquid phase 59Co NMR studies of cobalamins and their derivatives

We describe the application of 59Co NMR to the study of naturally occurring cobalamins. Targets of these investigations included vitamin B12, the B12 coenzyme, methylcobalamin, and dicyanocobyrinic acid heptamethylester. These measurements were carried out on solutions and powders of different origins, and repeated at a variety of magnetic field strengths. Particularly informative were the solid-state central transition NMR spectra, which when combined with numerical line shape analyses provided a clear description of the cobalt coupling parameters. These parameters showed a high sensitivity to the type of ligands attached to the metal and to the crystallization history of the sample. 59Co NMR determinations also were carried out on synthetic cobaloximes possessing alkyl, cyanide, aquo, and nitrogenated axial groups, substituents that paralleled the coordination of the natural compounds. These analogs displayed coupling anisotropies comparable to those of the cobalamins, as well as systematic up-field shifts that can be rationalized in terms of their stronger binding affinity to the cobalt atom. Cobaloximes also displayed a higher regularity in the relative orientations of their quadrupole and shielding coupling tensors, reflecting a higher symmetry in their in-plane coordination. For the cobalamines, poor correlations were observed between the values measured for the quadrupole couplings in the solid and the line widths observed in the corresponding solution 59Co NMR resonances.

Огляд наукових досліджень в галузі вивчення напружено-деформованого стану трубобетонних конструкцій

The paper presents an analytical review of the literature, which reflects the results of national and foreign scientific researches aimed to studying the features of the composition and dosage of components of self compacting concrete as one of the most promising aggregate for modern composite structures. In addition, the results of numerical and experimental researches of stress-strain state of composite structures (concrete-filled tubes) under the influence of various power factors, have been considered. The description and features of existing analytical methods for the determination of the bearing capacity of the considered structures under compression and bendings, have been given. The analysis of deformation model of confined concrete in a composition of the composite structure, as well as non-linear models of steel works with their distinctive features, has been carried out. The main approaches to the finite element modeling of composite structures have been determined.

Turkey votes: Part III - President Erdoğan - A foregone conclusion? EPC Commentary, 10 July 2014

On 1 July, after months of speculation, Turkey’s Prime Minister, Recep Tayyip Erdoğan, announced he would run in the country’s first direct presidential elections on 10 August. Erdoğan, who has dominated Turkish politics for over a decade, is viewed as the clear favourite. With current polls suggesting he could take as much as 52% of the vote, an outright victory in the first round is possible. His main rival, Ekmeleddin İhsanoğlu, is very much the underdog. Until recently, an international diplomat with no experience in politics, he is the joint candidate of Turkey’s two main opposition parties, the Republican People’s Party (CHP) and the Nationalist Movement Party (MHP). Selahattin Demirtaş, the Co-Chairman of the Kurdish Peoples Democratic Party (HDP) is also in the race, but is not expected to make it into double digits. The Kurdish vote however, could prove to be crucial if the ballot goes to a second round on 24 August. With Erdoğan wanting to increase Presidential powers, the stakes are high. With his belief in majoritarian rule, and increasingly authoritarian style of governance there has been an erosion of democracy and civil liberties. Many observers fear this trend may increase.

China's new Government: Priorities, Programs, Reform Signals. Asia Policy Brief 2013/02, May 2013

Never before has any change of leadership in China drawn this much international attention. The composition of the new party and state leadership in China is the result of many years of probing and negotiating within the top levels of the Communist Party. New priorities and leadership styles may cause fundamental shifts in the mechanisms of governance during the decade that China’s new leadership will be in control. Thus, the installation of a new government in China has potentially stronger long-term effects than most government turnovers in Western Democracies.

School finance reform in Texas; a report to the U.S. Commission on Civil Rights,

Cover title.

School desegregation in Corpus Christi : a report /

Includes bibliographical references.

Sin papeles, the undocumented in Texas : a report /

"January 1980."

Equal employment opportunity in Tacoma area local government : a report /

Mode of access: Internet.

Census undercounts and preparations for the 1990 census : a summary report, December 1988 /

"Summary report of a forum held by the New York State Advisory Committee on November 19, 1987."--Letter of transmittal.

Mennonites and their heritage ; a series of six studies designed for use in civilian public service camps.

Mode of access: Internet.

The gardens and park of Cranbrook House /

Mode of access: Internet.

Hate groups in Michigan : a sham or a shame : a report /

"March 1982."

The life and times of John Kelly, tribune of the people /

Kelly, a member of Congress, 1855-1858, was prominent in New York politics.

Biennial report.

Mode of access: Internet.

Final report to the President of the United States and to the chairman of the Governors' Conference.

Mode of access: Internet.