Substituent effects on the oxidative fragmentation reaction
The Effects of Melatonin on Oxidative Stress Parameters and DNA Fragmentation in Testicular Tissue of Rats Exposed to Microwave Radiation
... of oxidative metabolism in the germinal ...the effects of oxidative stress in this tissue, particularly the germinal cells, due to imbalances between pro-oxidant and anti-oxidant factors within the ...
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Isospin effects in fragmentation reactions
... the fragmentation of the projectile and target ...two-stage reaction scheme [2] for the description of this reaction ...the fragmentation of projectile and target nuclei can be understood as a ...
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Substituent effects in the radical reactions of amino acid derivatives and their analogues
... the reaction product was attempted by preparing the methoxide 109 through addition of a small amount of methanol to a filtered, but crude, reaction ...
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Substituent position effects on sunscreen photodynamics : a closer look at methyl anthranilate
... Computational Methods i. Density Functional Theory Initial scans along portions of the electronic potential energy surfaces were conducted using density functional theory (DFT) using NWChem. 29 The structures of p-MA and ...
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Axially chiral enamides : rotation barriers, substituent effects, and cyclisation reactions
... 3 functioning of a molecule. The key biaryl linkage in vancomycin was first synthesised by Evans, using VOF 3 17 , and subsequently by Nicolaou, using a Suzuki coupling. 18 The latter went on to report the total ...
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Effects of Substituent Substitution on a Bimetallic Hydroformylation Catalyst Based on a Tetraphosphine Ligand.
... polymerizations. Some degree of degradation of the olefin may be taking place. From the uptake curve for vinyl acetate, one can observe the catalyst deactivating long before reaching conversion levels where olefin ...
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Investigation on the Origin of Sperm DNA Fragmentation: Role of Apoptosis, Immaturity and Oxidative Stress
... Conversely, oxidative damage was scarcely concomitant with sDF in the total sperm population, at variance with live sperm, where 8-OHdG and MDA were clearly associated to ...in oxidative-injured live ...by ...
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Substituent Effects on the Activation Parameter Changes for the Aminolysis in the Bimolecular Nucleophilic Reactions in Solution
... the substituent effects on the benzene and pyridine rings to the variation of the activation parameters, X (X = H, S, G), in the above reactions in the frameworks of the Hammett – like equations in order ...
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Axially chiral enamides : substituent effects, rotation barriers, and implications for their cyclization reactions
... major product 44 arises via the intermediate acyl iminium ion 47, as previously observed for 25b, while the reduced product 45 may arise from abstraction of a hydrogen atom from toluene by the cyclized radical. This ...
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Spectrophotometric determination of doxycycline hyclate using oxidative coupling reaction
... Doxycycline was discovered in 1967 and has undergone extensive investigation, both for its antimicrobial properties as well as the effects on the physiology of higher organisms . Doxycycline is a broad-spectrum ...
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OXIDATIVE FRAGMENTATION OF 1, 5 CYCLOOCTADIENE DERIVATIVE: A NEW ENTRY INTO 16 MEMBERED MACROCYCLE
... Owing to puckering, macrocycles exhibit transannular, Van der Wall’s repulsion or even hydrogen bonding effects. Investigation on macrocyclic compounds have considerably broadened our concept of ring strain and ...
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OXIDATIVE FRAGMENTATION OF 1, 5 CYCLOOCTADIENE DERIVATIVE: A NEW ENTRY INTO 20 MEMBERED MACROCYCLE
... Macrocyclic compounds contribute to the advance of the organic chemical theory in particular, the influence of stearic factor on physical properties and chemical behaviors. Owing to puckering, macrocycles exhibit trans ...
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Proton transfer reactions of N aryl triazolium salts : unusual ortho substituent effects
... in the basicity of N(1) in the presence of ortho-fluoro, bromo and chloro substituents relative to other N-aryl triazolium ions 6b-f. Previously, we suggested that Path C rather than B was the most likely mechanism under ...
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The Oxidative Response and Viable Reaction Mechanism of the Textile Dyes by Fenton Reagent
... the reaction was studied under the effect of concentration of reactive dyes, concentration of oxidant were followed under pseudo first order condition and found to influence the catalytic ...the reaction ...
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4/18/ Substituent Effects in Electrophilic Substitutions. Substituent Effects in Electrophilic Substitutions
... Orienting Effects: Ortho and Para Directors • Alkyl groups have an electron-donating inductive effect • Nitration of toluene occurs ortho and para to the alkyl group because a resonance form places the positive ...
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Substituent effects of the stability of metal chelates
... Substituent effects of the stability of metal chelates Abstract The stability constants of the chelate compounds of a series of substituted diaroylmethanes with several divalent metals in 75 per cent by ...
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Substituent effects in the mass spectra of substituted benzils
... intensities obtained will reflect the internal energy distri- but ion functions p(E) and the rate constant functions k(E) for all the decomposing ions, and the eff[r] ...
287
Oxidative origin of sperm DNA fragmentation in the adult varicocele
... We observed that men with varicocele pre- sented a higher rate of sperm with SSB and DSB of any origin, when compared to the control group. Furthermore, these men also presented increased oxidative stress-related ...
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Effects of Charge and Substituent on the S∙∙∙N Chalcogen Bond
... of this charge remains in effect even when the (S + /N + ) center and the CH groups are separated by a long hydrocarbon chain. Given the strong effects of charge upon HBs, the obvious question arises as to ...
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Substituent effects on Ni 61 NMR chemical shifts
... On going from the all-trans cyclododecatriene complex 1 to the all-cis isomer 2, models to study the alleged ring-current effects in the parent ethylene complex 3, the 61 Ni nucleus is predicted to be shielded by ...
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