Thermodynamics of binary and ternary complexes of ascorbic acid and creatinine with Ag(I)

The stability constants of the 1:1 binary complexes of Ag(l) with creatinine and ascorbic acid and their 1:1:1 ternary complex and the protonation constants of the ligands were determined potentiometrically at a constant ionic strength of I = 0. 10 mol L-1 (NaClO4) in aqueous solutions at 10.0, 15.0 25.0 and 35degreesC. The thermodynamic parameters DeltaG(f)(o), DeltaH(f)(o) and DeltaS(f)(o) are reported for the formation reactions of the complexes. The enthalpy changes of all complexations are found to be negative but entropy changes positive. The driving force for the formation of Ag(I) - creatinine and Ag (I) - creatinine - ascorbic acid complexes is the enthalpy decrease

METHOD FOR OBTAINING THE RATE COEFFICIENT OF A 2ND-ORDER GAS EVOLVING REACTION

The method is based on the measurement of pressures produced by collection of the gas during equal time intervals. It was applied to HCOOH decomposition in H2SO4

Effects of cosolvents cetyltrimethylammonium bromide on the thresholds for nucleation of nitrogen in aqueous solutions

The decomposition of ammonium nitrite in water creates a supersaturated solution of nitrogen. The some process occurs in water-organic solvent mixtures. Acetone, dioxane, dimethylsulfoxide (DMSO) and dimethylformamide (DMF) are the cosolvents wed in this study. The limits of supersaturation of nitrogen (C-SL/mol L(-1)) were determined in all of these solvent mixtures by releasing the dissolved gas sonicationally and measuring the volume of released gas. C-SL was generally increased in the presence of cosolvents. The effectiveness sequence of organic solvents was found to be as DMF<DMSO<Dioxanet congruent to Acetone. Transportation period of small bubbles formed during sonication is changed by compositions of solvent mixtures. These periods may depend on the viscosity of the solution. Effects of the presence of cetyltrimethylammonium bromide were also studied It was concluded that there may be a relation between the strength of the water-cosolvent H-bonds and C-SL, and all of the measured quantities of this study were generally affected by micelle formation

Contrasting academic and lay press print coverage of the 2013-2016 Ebola Virus Disease outbreak

<div><p>Under a traditional paradigm, only those with the expected background knowledge consume academic literature. The lay press, as well as government and non-government agencies, play a complementary role of extracting findings of high interest or importance and translating them for general viewing. The need for accurate reporting and public advising is paramount when attempting to tackle epidemic outbreaks through behavior change. Yet, public trust in media outlets is at a historic low. The Crisis and Emergency Risk Communication (CERC) model for media reporting on public health emergencies was established in 2005 and has subsequently been used to analyze media reporting on outbreaks of influenza and measles as well as smoking habits and medication compliance. However, no media analysis had yet been performed on the 2013–2016 Ebola Virus Disease (EVD) outbreak. This study compared the EVD information relayed by lay press sources with general review articles in the academic literature through a mixed-methods analysis. These findings suggest that comprehensive review articles could not serve as a source to clarify and contextualize the uncertainties around the EVD outbreak, perhaps due to adherence to technical accuracy at the expense of clarity within the context of outbreak conditions. This finding does not imply inferiority of the academic literature, nor does it draw direct causation between confusion in review articles and public misunderstanding. Given the erosion of the barriers siloing academia, combined with the demands of today’s fast-paced media environment, contemporary researchers should realize that no study is outside the public forum and to therefore consider shifting the paradigm to take personal responsibility in the process of accurately translating their scientific words into public policy actions to best serve as a source of clarity.</p></div