1. WEB QUEST
PART OF AN
ABSTRACT
Aldair Pérez Cubillos
11-1 JM
Teacher: Marina Viana
Subject. English
2. Cassava Starch
• Background:
Cassava Production Starch mainly In The northern Region
Of The Cauca a Colombian Departament, In Small
Agricultural Industrias Know As “Rollanderías”.
• 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.
3. • Methods
Cassava Starch
Two main components were evaluated the determination of the
change in the concentration of the slurry zone, entering the
settling zone and the determination of the particle size
distribution in the settling zone.
• Results
The Slurry Concentration During The Strainer Operation was
Between 0,1 to 6%.
The Settling Process Variation During The Process Varied
Between 0,82 to 1.44 L/S. With A Predominance Of Laminar
Flow And A Hydraulic Retention Time Greater Than 150 Minutes.
4. • Conclusion:
Cassava Starch
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.
5. 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.
• 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).
6. 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).
• 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.
7. 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.
