Un Libro Quemado

Los escritos de Alfonsina Storni reunidos en este libro fueron publicados entre 1919 y 1921 en la revista La Nota y el diario La Nación. Sus títulos, como “¿Quién es el enemigo del divorcio?”, “Los defectos masculinos” o “¿Por qué las maestras se casan poco?”, dan cuenta de una mirada crítica e irreverente que desafió las costumbres y las normas de su época. Usando como molde las típicas columnas femeninas que giran en torno al mundo doméstico, Storni dio un paso más allá e incorporó temas polémicos tales como la presencia de la mujer en el mercado de trabajo y su rol en la sociedad moderna. Su escritura visionaria y su lucidez crítica la ubican dentro de una contracorriente de voces como las de Virginia Woolf, Clarice Lispector y Silvina Ocampo. A lo largo de toda su obra, Storni exploró distintos géneros, desdoblándose, recurriendo al humor y transgrediendo los estereotipos que pretendieron encasillarla. Rescatar sus escritos es traer a colación un pensamiento original que supo adelantarse a su tiempo y que continúa haciendo eco en la sociedad actual.https://scholarship.richmond.edu/bookshelf/1218/thumbnail.jp

Insights on a methanation catalyst aging process: Aging characterization and kinetic study

Power to gas systems is one of the most interesting long-term energy storage solutions. As a result of the high exothermicity of the CO2 methanation reaction, the catalyst in the methanation subsystem is subjected to thermal stress. Therefore, the performance of a commercial Ni/Al2O3 catalyst was investigated over a series of 100 hour-long tests and in-process relevant conditions, i.e. 5 bar from 270 to 500 °C. Different characterization techniques were employed to determine the mechanism of the observed performance loss (N2 physisorption, XRD, TPO). The TPO analysis excluded carbon deposition as a possible cause of catalyst aging. The BET analysis evidenced a severe reduction in the total surface area for the catalyst samples tested at higher temperatures. Furthermore, a direct correlation was found between the catalyst activity decline and the drop of the catalyst specific surface. In order to correctly design a reliable methanation reactor, it is essential to have a kinetic model that includes also the aging kinetics. For this purpose, the second set of experiments was carried out, in order to determine the intrinsic kinetics of the catalyst. The kinetic parameters were identified by using nonlinear regression analysis. Finally, a power-law aging model was proposed to consider the performance loss in time

Dr. Mary Edwards Walker: years ahead of her time.

Women phsycians in the United States were virtually nonexistent in the early to mid-1800s. Traditional medical schools still did not accept women, and few secretarian or eclectic medical schools were beginning to open their doors to female students. In 1849 at Geneva College, Elizabeth Blackwell became the first woman to achieve a medical degree in the United States.1 At the time of the Civil War, the few women who had managed to obtain medical degrees mainly served as nurses in the war, because society was not yet ready to accept the female physician.2 Dr. Mary Edwards Walker would help change the role of women physicians, becoming not only a valuable surgeon for the Union Army, but also a catalyst for the introduction and advancement of women in medicine