partes del 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; 165m long),
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.c

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.