3. 1-BACKGROUND/ ANTECEDENTES
THE PRODUCTION OF CASSAVA STARCH IN
COLOMBIA COMES MAINLY FROM THE
NORTHERN REGION OF THE CAUCA
DEPARTMENT IN SMALL AGRICULTURAL
INDUSTRIES K N O W N A S “ R A L L A N D E R Í A S ” , I N
WHICH THE SETTLING OF THE SLURRY
OCCURS IN CHANNELS.
4. 2-AIM OR PURPOSE OF RESEARCH/
OBJETIVO O PROPÓSITO DE LA
INVESTIGACIÓN
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
(0.3 M HIGH; 0.4 M WIDE; 165 M LONG) ,
WHICH ARE GENERALLY USED IN THE
REGION.
5. 3-METHOD USED/ MÉTODO UTILIZADO
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.
6. 4-FINDINGS, RESULTS/ HALLAZGOS /
RESULTADOS
IN RELATION TO THE AFFLUENT OF THE
CHANNELS, IT WAS FOUND THAT THE
CONCENTRATION OF THE SLURRY DURING
STRAINER OPERATION WAS BETWEEN 0.1
TO 6% MOST OF THE TIME; THE SETTLING
OF DISCRETE PARTICLES, FOR WHICH THE
STOKES LAW MAY BE APPLIED,
PREDOMINATED. 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.
7. 5-CONCLUSION/CONCLUSIÓN
IT WAS CONCLUDED THAT IN THE FIRST
104M OF THE CHANNEL, PARTICLES
G R E AT E R T H A N 1 0 Μ M I N S I Z E W E R E
EFFICIENTLY RETAINED; PARTICLES
BETWEEN 6,7 TO 8 , 8 Μ M WERE NOT
RETAINED AND WERE DISCHARGED INTO
LOCAL BODIES OF WATER, GENERATING
ENVIRONMENTAL PROBLEMS.
8. 1-BACKGROUND/ ANTECEDENTES
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.
9. 2-AIM OR PURPOSE OF RESEARCH/
OBJETIVO O PROPÓSITO DE LA
INVESTIGACIÓN
WAS ANALYZED SEXUAL PRACTICES AND
METHODS OF PROTECTION DEPENDING
ON THE AGE OF SEXUAL DEBUT AMONG
SPANISH ADOLESCENTS WHO ARE
SEXUALLY EXPERIENCED (N = 351) .
10. 3-METHOD USED/ MÉTODO UTILIZADO
IT WAS FOUND THE MEAN AGE WAS 15.9
YEARS (SD = .75, RANGE: 14 -18) . 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) .
11. 4-FINDINGS, RESULTS/ HALLAZGOS /
RESULTADOS
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.
