2008 Analysis of the Geometry of Drilled Holes in Demolition ...

algorithm involves filtering the pixels according to color and then determining
three points on the circumference of the iris. The three points were then used to
calculate and obtain the coordinates of the center of the iris. The algorithm was
programmed in Java. Two tests, in color and in grayscale, were conducted. The
output of the program is the coordinates of the iris and a graph illustrating its
motion. The calculated coordinates of the program from the two tests were then
compared to the actual coordinates.
The mean difference in distance from the grayscale was about half that of
the colored. Therefore, the program ran better when the video was in grayscale.
There were certain failed tests in both runs which were caused by either not
having a change, an out-of-range position of the iris from the camera view, or a
miscalculation. The differences between the calculated and actual points usually
differ by a either a small amount of about 20 pixels or a large amount (about 90
pixels). The algorithm used in this eye tracking program can be further optimized
and improved to be able to use the webcam as a mouse substitute.
#37
Falcarindiol Spray From Carrot Peels As Shelf Life Lengthener
For Fresh Produce
Joseph Ronil T. De Leon Jr., Mark Lester C. Dumlao, Lady Christine C. Cruz
ABSTRACT
Food spoilage occurs when fungi and other microorganisms grow on the
interior and exterior of the food product. Some of the techniques used to inhibit
the growth of microorganisms such as refrigeration and irradiation are costly. The
project formulated a spray composed of falcarindiol extract from carrot peels as a
shelf life lengthener for fresh produce.
A total of 173.5 grams of carrot peelings were obtained from carrots. These
peelings were osterized and paper-filtered. The resulting liquid was centrifuged at
6000 rpm, 4 o C for 10 minutes and was decanted. The liquid part obtained from
decantation was centrifuged at 13000 rpm, 4 o C for 20 minutes and was again
decanted. The resulting liquid was then microfiltered using 0.22-μm pore size
microfilters and was stored in sterilized 50-mL falcon tubes. Ten apples were
obtained and were divided into two treatment groups with five replicates each.
The microfiltered extract was then applied to the treatment group with extract. All
of the treatment groups were exposed in an open environment for seven days.
After the time period, pictures of the treatment groups were taken and 30
people were asked to rate the treatment groups on a scale of one to three, with
one being the least rotten group and three being the most rotten group. Results
of the sensory tests show that falcarindiol can inhibit the growth of
microorganisms on the surface of the fresh produce, making it a potential shelflife
lengthener of the aforesaid products.