Esterification with sulfuric acid

Thesis (M.A.)--Boston Universit

A study of renal excretion with special reference to Ambard's laws

Thesis (Ph.D.)--Boston Universit

From Rabbi to Minister - In Seven Generations

My Experienc

Potential Energy Landscape of CO Adsorbates on NaCl(100) and Implications in Isomerization of Vibrationally Excited CO

Several full-dimensional potential energy surfaces (PESs) are reported for vibrating CO adsorbates at two coverages on a rigid NaCl(100) surface based on first principles calculations. These PESs reveal a rather flat energy landscape for physisorption of vibrationless CO on NaCl(100), evidenced by various C-down adsorption patterns within a small energy range. Agreement with available experimental results is satisfactory, although quantitative differences exist. These PESs are used to explore isomerization pathways between the C-down and higher energy O-down configurations, which reveal a significant isomerization barrier. As CO vibration is excited, however, the energy order of the two isomer changes, which helps to explain the experimental observed flipping of vibrationally excited CO adsorbates

Firmness and cell wall changes during maturation of ‘Arbequina’ olive fruit: the impact of irrigation

The olive tree (Olea europaea L.) has been cultivated around the Mediterranean basin since ancient times, ‘Arbequina’ being one of the most widely grown varieties. To improve the knowledge on ripening-related firmness changes in olive fruit, cell wall metabolism was studied in irrigated and rain-fed ‘Arbequina’ olives grown at ‘Les Garrigues’, a Protected Designation of Origin (PDO) in Catalonia (NE Spain) where harsh environmental conditions occur during fruit development. Fruit samples were picked periodically from September to January. Time-course dynamics of firmness loss during maturation were characterised by a first phase of rapid firmness loss followed by a second phase of moderate change. Compositional changes in cell walls and related enzyme activities were studied in fruit samples. Fruit firmness was significantly higher in rain-fed than in irrigated olives. Neutral sugar loss, an early event in ripening-related cell wall modifications, was lower in rain-fed samples, which, moreover, retained higher uronic acid amounts in the chelator-soluble fraction, thus resulting in attenuated firmness loss in these fruits.This research was funded by the Plan Nacional de I+D, Ministerio de Ciencia e Innovacion (MICINN), Spain, grant number AGL2015-64235-R. C.D. was the recipient of a predoctoral scholarship granted by the Universitat de Lleida