Upload
eileen-parsons
View
216
Download
2
Tags:
Embed Size (px)
Citation preview
Project-Learning
Under which situation do we use which brand of plaster??
Member list
Teacher Adviser : Tam Wing Ching Leader : Chong Maan Yu (4) Member :
Chang Lok Yu (2)Chow Suk Shan (5)Ho Chung Yan (7)Hui Po Yan (8)Leung Chui Shan (11)
Introduction:
Usage of plasters : related to our daily life.
allow the wound to breathe and help the natural healing process.
Factors to be considered when doing the experiments
Absorbency VentilationForce degreeWaterproofViscosity
~Waterproof Experiment~
Aim
test the cotton if it
could prevent the
incoming water.
1.Formed the two groups
~Waterproof Experiment~
Put on tomato, then filled up with water.
Results:
1 Standard ﹕ (obtained the least water ) 4: Watsons
2 Adhesive Plasters 5 Handsaplast ﹕ ﹕3﹕Banitore 6 Band Plus ﹕ (obtain the most water )
~Waterproof Experiment~
~~Viscosity Experiment~~
Aim
test which plaster
could absorb the
largest amount of
dust
~~Viscosity Experiment~~
put the plasters on some wooden stickers and placed them near the
windows.
Viscosity Experiment( failed )
First experiment:
our classroom
was so clean, we
couldn't found a
lot of dust
Second experiment:
there was too a
lot of dust, we
couldn't find
different between
the plasters
Absorbency Experiment
Aim: test the cotton’s
absorbency.
Why? one of the important
features Gentian violet
solution is easy to show the results clearly.
Steps: drop drib of gentian
violet solution to the each plasters’ absorbent cotton.
Wait for 2 minutes put one paper cover
the plasters and one paper at the bottom to absorb the extra solution.
~Absorbency Experiment~
plaster Cover paper
contains solution
cannot absorb the solution completely
Absorbency Experiment
cover paper (at the bottom)
Plaster
has solution
can absorb all of the solution but it overloads.
~Absorbency Experiment~
Results: 1: Adhesive Plasters. 2: Banitore
Protective Plaster 3: Hansaplast 4: Standard Bandage 5: Watsons Plasters 6: Band Plus
Pull Experiment
used spring scale instead of by hand
(more accurate and easier to measure.)
Affording weight higher
---tensility is better
put a clip at one side of each plaster
Pull Experiment
the other side was connected to a spring scale
pulled the plaster violently
*=The easiest to pull.******=The stickiest.#= the worst (the most change in appearance.)######=The best.(Just small change in appearance)
Pull Experiment (Results)
Pull experiment (failed)
Use different afford power (Newton)-------unfair (a big mistake)
~Pull Experiment2~(Forced Degree)
set the weight,
25N
pull the plasters
with this weight
~Pull Experiment2~(results)
~Pull Experiment2~results
Plasters
1.Standard ####
2.Watsons ##
3.Hansaplaste ######
4.Band Plus #
5.Adhesive ###
6.Banitore #####
#= the worst
(the most change in appearance.)
######= the best (just small change in appearance) Hansaplast maintains the first position in both experiments
Ventilation Experiment
Aim: test the plasters’
ventilation
Why? it will affect the
wound to breathe or the healing.
Ventilation Experiment
Steps: 1. drop 2ml alcohol
into each test tube 2. cover the test
tubes with the different plasters’ cotton.
3. put all the test tubes near window
*alcohol’s volatility is better than the others
Ventilation Experiment(failed)
not enough time dangerous (by
heating ) didn't have other
methods. *Failed the 2nd time--due to atypical
pneumonia (use water to do the
second experiment)
~Conclusion~
If the number is small, it has the best performance in this category.
--- failed two experiments (viscosity and ventilation).
Order:
Name
Waterproof
Absorbency
Pull Average
Place in a competition
Band Plus 1 6 6 4.3… 4(WORST)
Handsaplast
2 3 1 2 1 (BEST)
Watsons 3 5 5 4.3 4(WORST)
Banitore 4 2 2 2.6… 2Adhesive Plasters
5 1 4 3.3… 3Standard 6 4 3 4.3… 4 (WORST)
~Conclusion~
Arrangement
1: Handsaplast
2: Banitore
3: Adhesive Plaster
4: Standard
: Watsons
: Band Plus
Mistakes:failed three experiments -no enough time --environmental errors ---our mistakes (couldn’t concentrate the problems to solve) We are so sorry that we
could
not give you the exact answers!!
~Conclusion~
Advice: Standard & Adhesive
Plasters for fingers(contacted with
water---good at waterproof )
Adhesive Plasters for wound is quite large and outpour blood
(absorb blood rapidly.) We hope these advise will be useful for you!!
~Reference~
~E-mail address~