Las partes de un abstract

2.  Background
 Purpose And Focus
 Methods
 Result
 Conclusions

4.  The production of cassava starch in
Colombia comes mainly from the northern
region of the Cauca Departament in small
agricultural industries know as
“rallanderías”, in which the settling of the
slurry occurs in channels.

5.  Due to the fact that the settling process
determines the capacity of the starch
industry, it is important to evaluate the
sedimentation process performed in
rectangular channels (0.3m high; o.4m
wide; 165mlong), which are generally used
in the region.

6.  Two main components were evaluated:
determination of the change in the
concentration of the slurry entering the
settling zone and determination of the
particle size distribution in the settling
zone.

7.  During the settling process, the flow varied
between 0.82 to 1.44 L/S with a
predominance of laminar flow and a
hydraulic, retention time greater than 150
minutes.

8.  In the first 104m of the channel, particles
greater than 10μm in size were efficiently
retained; particles between 6.7 to 8.8μm
were not retained and were discharged
into local bodies of water, generating
environmental problems.

10.  In Spain young people have their first
sexual intercourse at an earlier age than in
other countries; however, little is know
about the relationship between age of
sexual debut and sexual behavior in this
population.

11.  Sexual practices and methods of
protection are analyzed depending on the
age of sexual debut among Spanish
adolescents who are sexually experienced
(N-351). The mean age was 15,9 years
(SD=.75, range: 14-18).

12.  Three groups were formed according to
the age of sexual debut reported: Early
sexual debut (Earlier than 15 years),
average (15 years) and late (Later than 15
years).

13.  The early sexual debut group reported
further mutual masturbation, vaginal
intercourse and oral sex with a higher
number of sexual portners than the rest.
Condom use at first intercourse,
percentage of use and Consistent-Condom
use was significantly lower in the early
sexual debut group compared to the
others.

14.  Sexual debut before 15 years old was
assocrated with increased risk of sexual
infections, deficit in condom use and
iincreased sexual exposure. The findings of
this study suggest that the age of sexual
debut has implications for the sexual
health in young people.