The role of hydrogen bonding in tuning CEST contrast efficiency: A comparative study of intra and inter molecular hydrogen bonding

2022 ◽  
Author(s):  
Shalini Pandey ◽  
Subhayan Chakraborty ◽  
Rimilmandrita Ghosh ◽  
Divya Radhakrishnan ◽  
Saravanan Peruncheralathan ◽  
...  

The effectiveness of MRI as a diagnostic tool have increased tremendously after the discovery of contrast agents (CA). Most of the clinically approved CAs at present are relaxation based and...

2012 ◽  
Vol 11 (4) ◽  
pp. 259-265
Author(s):  
Leticia Guerrero ◽  
Ruben Montalvo ◽  
Ignacio A. Rivero ◽  
Victor Barba

RSC Advances ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 6526-6534
Author(s):  
Subhayan Chakraborty ◽  
S. Peruncheralathan ◽  
Arindam Ghosh

Paracetamol and a few other acetanilide derivatives show diaCEST property through formation of inter-molecular hydrogen bonding mediated molecular chains or sheets.


2015 ◽  
Vol 39 (1) ◽  
pp. 453-460 ◽  
Author(s):  
Vandana S. Pore ◽  
Sandip G. Agalave ◽  
Shrikant G. Pharande ◽  
Prashant A. Patil ◽  
Amol S. Kotmale

Novel bile acid hydrazides are synthesized and temperature dependent NMR, IR and rheological experiments are done for understanding the role of intra-molecular hydrogen bonding leading to gelation.


2020 ◽  
Vol 59 (5) ◽  
pp. 1914-1924 ◽  
Author(s):  
Yuan Liu ◽  
Jun Zhao ◽  
Yunyan Peng ◽  
Jun Luo ◽  
Lijun Cao ◽  
...  

1992 ◽  
Vol 292 ◽  
Author(s):  
Ruth Pachter ◽  
Peter D. Haaland ◽  
Robert L. Crane ◽  
W. Wade Adams

AbstractMolecular simulations that predict the molecular mechanical response of alpha-helical biopolymers with a reinforcing intra-molecular hydrogen bonding network, viz,, a ‘spring-like’ behavior, are presented in this study. Mechanical properties of extended biopolymer strands based on naturally occurring amino acids, namely poly(L-A1a) and for comparison poly(LGlu), versus synthetic PPTA containing an amide bond, are compared to those assuming alpha-helical structures. Thus, the pivotal role of such motifs in biological systems utilizing superior compressive mechanical properties can be inferred.


2020 ◽  
Vol 28 (2) ◽  
pp. 298-318
Author(s):  
Roman Girma Teshome

The effectiveness of human rights adjudicative procedures partly, if not most importantly, hinges upon the adequacy of the remedies they grant and the implementation of those remedies. This assertion also holds water with regard to the international and regional monitoring bodies established to receive individual complaints related to economic, social and cultural rights (hereinafter ‘ESC rights’ or ‘socio-economic rights’). Remedies can serve two major functions: they are meant, first, to rectify the pecuniary and non-pecuniary damage sustained by the particular victim, and second, to resolve systematic problems existing in the state machinery in order to ensure the non-repetition of the act. Hence, the role of remedies is not confined to correcting the past but also shaping the future by providing reforming measures a state has to undertake. The adequacy of remedies awarded by international and regional human rights bodies is also assessed based on these two benchmarks. The present article examines these issues in relation to individual complaint procedures that deal with the violation of ESC rights, with particular reference to the case laws of the three jurisdictions selected for this work, i.e. the United Nations, Inter-American and African Human Rights Systems.


2000 ◽  
Vol 2 (1) ◽  
pp. 107-123 ◽  
Author(s):  
Muzaffar Iqbal

This article attempts to present a comparative study of the role of two twentieth-century English translations of the Qur'an: cAbdullah Yūsuf cAlī's The Meaning of the Glorious Qur'ān and Muḥammad Asad's The Message of the Qur'ān. No two men could have been more different in their background, social and political milieu and life experiences than Yūsuf cAlī and Asad. Yūsuf 'Alī was born and raised in British India and had a brilliant but traditional middle-class academic career. Asad traversed a vast cultural and geographical terrain: from a highly-disciplined childhood in Europe to the deserts of Arabia. Both men lived ‘intensely’ and with deep spiritual yearning. At some time in each of their lives they decided to embark upon the translation of the Qur'an. Their efforts have provided us with two incredibly rich monumental works, which both reflect their own unique approaches and the effects of the times and circumstances in which they lived. A comparative study of these two translations can provide rich insights into the exegesis and the phenomenon of human understanding of the divine text.


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