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Papers by Christian Ramirez
Investigacion Agraria, Aug 2, 2013
Determinación de rendimiento y calidad forrajera de especies del género Brachiaria, en un suelo d... more Determinación de rendimiento y calidad forrajera de especies del género Brachiaria, en un suelo derivado de granito 1 Determination of yield and forage quality of Brachiaria species growing on soils derived from granite
Revista Cientifica, Oct 9, 2014
Journal of Economic Entomology, 2015
A series of experiments were conducted to determine the impact of Protaphorura fimata Gisin (Fami... more A series of experiments were conducted to determine the impact of Protaphorura fimata Gisin (Family: Onychiuridae) feeding on seeds and germinating seedlings of lettuce, Lactuca sativa L. (Asteraceae). First, various densities of P. fimata were incubated with 25 lettuce seeds for 7 d and feeding injury was evaluated in three soilless arena experiments. As a second step, 100 P. fimata were incubated with 25 lettuce seeds in three arena experiments with soil media. Finally, in a commercial field the incidence and impact of P. fimata on recently planted lettuce was assessed following applications of pyrethroid-insecticides: 2 d before planting, at planting, and 20 d later. In experiments without soil, the number of ungerminated seeds, feeding injury sites, and plants with injury were significantly greater in arenas with P. fimata than without. Similarly, the number of germinated seedlings, shoot fresh, and dry weights, and the length and width of fully opened-leaves were greater in arenas without than with P. fimata in assays with soil. In the field, P. fimata densities were significantly lower in beds that received insecticides at 2 d before and at planting than in untreated beds. Also, the fresh and dry weights of lettuce plants were significantly greater in the beds that received insecticide than in untreated. The results clearly show that P. fimata is a pest of lettuce and can cause severe feeding injury to germinating seeds or seedlings, thereby reducing their growth rate. The potential implications of P. fimata feeding and feeding injury characteristics are discussed.
Taboo: The Journal of Culture and Education, Dec 20, 2018
The school-to-prison pipeline (STPP) involves harsh discipline practices and exclusionary process... more The school-to-prison pipeline (STPP) involves harsh discipline practices and exclusionary processes that disproportionally effect students of color by excluding them from K-12 education and increasing the likelihood of their involvement with the criminal justice system. To curtail these unjust practices and end the negative effects of the STPP, much of the academic literature provides insight into the causes of the STPP and proposes solutions to this problem. However, the voices of those who have experienced the STPP are largely missing from the literature. Specifically, the perspective of academically capable but historically unsuccessful incarcerated adults is largely unknown. This paper uses first-hand narratives developed using evocative autoethnographic methodology to describe the K-12 experiences of currently incarcerated college students. The STPP literature and two developmental theories (Bronfenbrenner (1979); Maslow (1971)) frame the narratives that explore A) interpersonal and intrapersonal experiences within the STPP; B) the complex interplay of the systems the authors interacted with; C) unmet needs that prevented educational attainment; and D) unanswered questions such as: "Who could I have been if someone had intervened?" This article concludes with questions that challenge readers to become engaged in social justice actions that can prevent current and future K-12 students from becoming oppressed and controlled by the STPP.
Investigacion Agraria, Aug 2, 2013
Determinación de rendimiento y calidad forrajera de especies del género Brachiaria, en un suelo d... more Determinación de rendimiento y calidad forrajera de especies del género Brachiaria, en un suelo derivado de granito 1 Determination of yield and forage quality of Brachiaria species growing on soils derived from granite
Revista Cientifica, Oct 9, 2014
Journal of Economic Entomology, 2015
A series of experiments were conducted to determine the impact of Protaphorura fimata Gisin (Fami... more A series of experiments were conducted to determine the impact of Protaphorura fimata Gisin (Family: Onychiuridae) feeding on seeds and germinating seedlings of lettuce, Lactuca sativa L. (Asteraceae). First, various densities of P. fimata were incubated with 25 lettuce seeds for 7 d and feeding injury was evaluated in three soilless arena experiments. As a second step, 100 P. fimata were incubated with 25 lettuce seeds in three arena experiments with soil media. Finally, in a commercial field the incidence and impact of P. fimata on recently planted lettuce was assessed following applications of pyrethroid-insecticides: 2 d before planting, at planting, and 20 d later. In experiments without soil, the number of ungerminated seeds, feeding injury sites, and plants with injury were significantly greater in arenas with P. fimata than without. Similarly, the number of germinated seedlings, shoot fresh, and dry weights, and the length and width of fully opened-leaves were greater in arenas without than with P. fimata in assays with soil. In the field, P. fimata densities were significantly lower in beds that received insecticides at 2 d before and at planting than in untreated beds. Also, the fresh and dry weights of lettuce plants were significantly greater in the beds that received insecticide than in untreated. The results clearly show that P. fimata is a pest of lettuce and can cause severe feeding injury to germinating seeds or seedlings, thereby reducing their growth rate. The potential implications of P. fimata feeding and feeding injury characteristics are discussed.
Taboo: The Journal of Culture and Education, Dec 20, 2018
The school-to-prison pipeline (STPP) involves harsh discipline practices and exclusionary process... more The school-to-prison pipeline (STPP) involves harsh discipline practices and exclusionary processes that disproportionally effect students of color by excluding them from K-12 education and increasing the likelihood of their involvement with the criminal justice system. To curtail these unjust practices and end the negative effects of the STPP, much of the academic literature provides insight into the causes of the STPP and proposes solutions to this problem. However, the voices of those who have experienced the STPP are largely missing from the literature. Specifically, the perspective of academically capable but historically unsuccessful incarcerated adults is largely unknown. This paper uses first-hand narratives developed using evocative autoethnographic methodology to describe the K-12 experiences of currently incarcerated college students. The STPP literature and two developmental theories (Bronfenbrenner (1979); Maslow (1971)) frame the narratives that explore A) interpersonal and intrapersonal experiences within the STPP; B) the complex interplay of the systems the authors interacted with; C) unmet needs that prevented educational attainment; and D) unanswered questions such as: "Who could I have been if someone had intervened?" This article concludes with questions that challenge readers to become engaged in social justice actions that can prevent current and future K-12 students from becoming oppressed and controlled by the STPP.