2. Cassava Starch Separation
Background:
Cassava Production Starch mainly In The
northern Region Of The Cauca a Colombian
Departament, In Small Agricultural Industrias
Know As “Rollanderías”.
3. Cassava Starch Separation
Purpose And Focus:
Evaluate The Sedimentation Process
Performed In Rectangular Channels (0.3m
High; 0.4m Wide; 165m Long) Which Are
generally Used In The Region.
4. Cassava Starch Separation
Methods:
Two Main ComponentsWere Evaluated:
• Determination Of The Change In The
Concentration Of The Slurry Zone, Entering
The Settling Zone.
• Determination Of The Particle Size
Distribution In The Settling Zone.
5. Cassava Starch Separation
Results:
Slurry Concentration During The Strainer Operation:
• Between 0,1 to 6%.
Settling Process Variation During The Process:
• It Varied Between 0,82 to 1.44 L/S. With A
Predominance Of Laminar Flow And A Hydraulic
Retention Time Greater Than 150 Minutes.
6. Cassava Starch Separation
Conclusions:
In The First 104m Of The Channels, Particles
Greater Than 10 μm in size were efficiently
retained, particles between 6.7 to 8.8 μm were
not retained and were discharged into local
bodies of water, generating a great
environmental problem.
7. Sexual Risk In Adolescents
Background:
In Spain young people have their first sexual
intercourse at an earlier age than in other
countries; however, little is known about the
relationship between age of sexual debut and
sexual behavior in this population.
8. Sexual Risk In Adolescents
Purpose And Focus:
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).
9. Sexual Risk In Adolescents
Methods:
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).
• The early sexual debut group reported further
mutual masturbation, vaginal intercourse and oral
sex with a higher number of sexual partners than
the rest.
10. Sexual Risk In Adolescents
Results:
The early sexual debut group reported further mutual
masturbation, vaginal intercourse and oral sex with a
higher number of sexual partners 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.
Sexual debut before 15 years old was associated with
increased risk of sexual infections, deficit in condom
use and increased sexual exposure.
11. Sexual Risk In Adolescents
Conclusions:
The findings of this study suggest that the age
of sexual debut has implications for the sexual
health in young people.
