Results 61 to 70 of about 4,994,766 (232)
Applied Organometallic Chemistry, Volume 39, Issue 7, July 2025.Mn (II) complex with 4‐iodo‐pyridine‐2‐carboxylic acid and 5,5′‐dimethyl‐2,2′‐bipyridine has shown significant potential for nonlinear optical (NLO) applications, as evidenced by both static and frequency‐dependent NLO analyses. This is attributed to the interaction between Mn (II) ion and the coordinated ligands, which facilitates intramolecular ...
Ömer Tamer +5 more
wiley +1 more source
Acid zeta function and ajoint acid zeta function [PDF]
arXiv, 2010 In this paper we set up the theory of acid zeta function and ajoint acid zeta function, based on the theory, we point out a reason to doubt the truth of the Riemann hypothesis and also as a consequence, we give out some new RH equivalences.
arxiv
ChemMedChem, Volume 20, Issue 12, June 17, 2025.The serine capsid protease (CP) catalyzes a crucial process of the alphaviral replication cycle; therefore, it constitutes an interesting therapy target. Herein, the O'nyong‐nyong virus CP profile activity with a specific fluorogenic substrate is analyzed and examines the inhibitory activity of a new series of phosphonic analogs of tryptophan and ...
Karolina Torzyk‐Jurowska +5 more
wiley +1 more source
Is Amino-Acid Homochirality Due To Asymmetric Photolysis In Space? [PDF]
arXiv, 1999 Amino acids occurring in proteins are, with rare exceptions, exclusively of the L-configuration. Among the many scenarios put forward to explain the origin of this chiral homogeneity (i.e., homochirality), one involves the asymmetric photolysis of amino acids present in space, triggered by circularly polarized UV radiation.
arxiv
Carbon Doping of MgB2 by Toluene and Malic-Acid-in-Toluene [PDF]
, 2010 The decomposition of malic acid in the presence of Mg and B was studied using Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA) which revealed that malic acid reacted with Mg but not B. Also, the addition of toluene to dissolve malic acid followed by subsequent drying resulted in no reaction with Mg, indicating that the malic
arxiv +1 more source
Inorganic Chemistry, 2019 New coordination polymers of cobalt(II), namely, [Co(μ4-cpna)(H2O)2] n (1), [Co(μ3-cpna)(phen)(H2O)] n· nH2O (2), [Co3(μ4-dppa)2(H2O)6] n·2 nH2O (3), and [Co3(μ5-dppa)2(μ-4,4'-bipy)(H2O)2] n·4 nH2O (4), have been generated under hydrothermal conditions ...
Jinzhong Gu +6 more
semanticscholar +1 more source
Chemistry – A European Journal, Volume 31, Issue 28, May 19, 2025.The nature of the central spacer and the topology of the chelator plays a crucial role in the stability of [90Y]Y3+ and [177Lu]Lu3+ OCTAPA derivatives relevant for radiopharmaceutical applications. We present a detailed investigation on the coordination chemistry of [nat/90Y]Y3+ and [nat/177Lu]Lu3+ with the new acyclic chelator H4CHXOITAPA.
Fátima Lucio‐Martínez +7 more
wiley +1 more source
Are Strong Bronsted Acids Necessarily Strong Lewis Acids? [PDF]
arXiv, 2006 The Broensted and Lowry acid base theory is based on the capacity of proton donation or acceptance (in the presence or absence of a solvent) whereas the Lewis acid base theory is based on the propensity of electron pair acceptance or donation. We explore through DFT calculation the obvious question whether these two theories are in conformity with each
arxiv
A search for mid-IR bands of amino acids in the Perseus Molecular Cloud [PDF]
arXiv, 2021 Amino acids are building-blocks of proteins, basic constituents of all organisms and essential to life on Earth. They are present in carbonaceous chondrite meteorites and comets, but their origin is still unknown. Formation of amino acids in the interstellar medium is posible via specific gas-phase reactions in dark clouds, however sensitive ...
arxiv
The Factors of the Classification of Protein Amino Acids [PDF]
This paper is published in GLASNIK of Montenegrin Academy of
Science and arts, 2000, 13, pp. 173-194, 2006 In this work it is shown that three pairs of the factors appear to be the key, i.e. main factors of a natural classification of protein (canonical) amino acids within the amino acid (genetic) code. First pair: the factors of the habit of an amino acid molecule (size and polarity).
arxiv