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In this paper, we propose a new
contextualization of the so-called scientific method in teaching practices in
science and engineering education. We report an objectification in information
and communication technologies (ICT) for simulate the reaction rates during an
class and its inclusion in the above-mentioned pedagogical purpose, that, in
tune with the current realities of schools, rehearses reflections of a future
with another horizon for teaching/learning engineering and other sciences.
Aims: Cabraleadiol (1), Ocotilone (2) and Odoratone (3) are three triterpenes isolated from Cabralea
canjerana (Vell.) Mart. (Meliaceae).
They were chemically characterized, and their effect was tested on the light reaction of
photosynthesis. Study Design: Natural products were used as models to find new
models for inhibitors of photosynthesis. Place and Duration of Study: Departmento
de Química, Universidade Federal de São Carlos and Departmento de Bioquímica,
Facultad de Química, Universidad Nacional Autonoma de México, between May 2013
and January 2014. Methodology: The natural products had their effect on the
light reaction of photosynthesis studied by pollarography and Chlorophyll a
(Chl a) fluorescence
transients. Results: The compounds inhibited ATP synthesis and electron
transport rate (basal, phosphorylating and uncoupled). Therefore, they act as
Hill reactions inhibitors. Their inhibition site were located in the range of
electron flow from OEC complex and between P680 to QA of
PS II, and inhibited the photosystem II (PS II) by inducing the appearance of a
K-band which is an indicative that the photochemical apparatus is failing at
the donor side of PS II interacting at the OEC complex and by transforming
active reaction centers to “heat sinks” or the formation of silent reaction
centers unable to reduce QA. Conclusion: Furthermore, these
triterpenes inhibit PS II and induce the appearance of small G band which is
related with the decreased plastoquinone (PQ) pool reduction.
Objective: Understanding the perception of women who have recently given birth in a
Brazilian hospital regarding labor pain and nursing involvement in the labor
process. Methodology: exploratory, descriptive and qualitative study
carried out in a Maternity part of the supplementary health system in the
Federal District (DF). Data were collected between May and July 2015 through
interviews using a semi-structured questionnaire. The sample consisted of 16
mothers and data analysis followed Bardin methodology in three phases. Results: The pain experienced during labor is surrounded by feelings and expectations.
Both positive and negative feelings experienced by mothers were identified in the
interviews and unanimous opinion was the fact that the second stage is the most
painful period as continuous pain is experienced. Some of the participants compared
pain with strong menstrual cramps, renal colic and back pain; others, said
labor pain was the strongest ever experienced. The immediate contact with the
newborn was referred to as a reward for coping with breast pain and suffering.
Other factors such as the importance of follow-up, support and coping with the
pain and care provided by health staff were also highlighted. Conclusion: empowerment of the mother and family through knowledge is considered an
important tool to fight pain and cope with the birth process in a positive and
physiological way, which in the long run promotes a cultural change in the
population regarding the importance of vaginal birth.