Difference between revisions of "Team:UFSCar-Brasil/environmental.html"
| Line 5: | Line 5: | ||
<div class="ui hidden divider"></div> | <div class="ui hidden divider"></div> | ||
| − | <div class="ui | + | <div class="ui vertical center aligned inverted segment"> |
<div class="ui fluid container"> | <div class="ui fluid container"> | ||
| Line 11: | Line 11: | ||
<div class="ui text container"> | <div class="ui text container"> | ||
| − | <h1 class="ui | + | <h1 class="ui teal header"> |
| − | + | Safety/Security | |
</h1> | </h1> | ||
| − | <h2 class="ui | + | <h2 class="ui teal header">UFSCar-Brasil Team impacting society</h2> |
</div> | </div> | ||
| − | |||
</div> | </div> | ||
</div> | </div> | ||
| − | + | <div class="ui vertical stripe segment stackable container"> | |
| − | + | <h3 class="ui header" id="overview">Introduction</h3> | |
| − | + | <p>Although poisoning by DEET (active ingredient of the most common commercial repellents) and D-limonene are rare events, it is known that these two substances may be toxic. The absorption of high concentrations of DEET (N, N-diethyl-m-toluamide) can | |
| − | + | have neurotoxic effect and even be lethal (1,2,3,4,5). D-limonene, if ingested in high concentrations may also cause death (6). Therefore, we conducted a simple test to compare the effect of the two substances on beans development (Phaseolus vulgaris, | |
| − | + | Fabaceae). | |
| − | Therefore, we conducted a simple test to compare the effect of the two substances on beans development (Phaseolus vulgaris, Fabaceae). | + | </p> |
| − | + | </div> | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | <div class="ui vertical stripe segment stackable container"> | |
| − | + | <h3 class="ui header" id="plasmolise">Methods</h3> | |
| − | + | <p>In order to reduce fungal contamination, water and cotton used in the experiment were sterilized by autoclaving. Beans seeds were immersed in 2.7% hypochlorite and then in 70% ethanol (5 minutes for each solution). The seeds were divided into 5 groups | |
| − | + | (corresponding to five different treatments), each containing 16 individuals. Each seed was placed on a piece of cotton inside a plastic cup. The groups were placed on a bench in order to receive the same illumination. | |
| − | + | </p> | |
| − | The seeds were divided into 5 groups (corresponding to five different treatments), each containing 16 individuals. Each seed was placed on a piece of cotton inside a plastic cup. The groups were placed on a bench in order to receive the same illumination. | + | |
| − | </p> | + | |
| − | + | <p>All seeds initially received 2 mL of water. Treatments were initiated after 24 hours. The following treatments were administered every 24 hours: | |
| − | The following treatments were administered every 24 hours: | + | </p> |
| − | </p> | + | </div> |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | <div class="ui vertical stripe segment stackable container"> | |
| − | + | <h3 class="ui header" id="limoneno">Analysis of results</h3> | |
| − | + | <p>Beans development At the end of the experiment, all individuals in each group were measured, as seen below: There was a significant difference between the growth of limonene and control groups compared to the group receiving DEET.</p> | |
| − | + | </div> | |
| − | + | ||
| − | + | ||
| − | At the end of the experiment, all individuals in each group were measured, as seen below: | + | |
| − | There was a significant difference between the growth of limonene and control groups compared to the group receiving DEET.</p> | + | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
</html> | </html> | ||
{{:Team:UFSCar-Brasil/Templates/Footer}} | {{:Team:UFSCar-Brasil/Templates/Footer}} | ||
Revision as of 02:25, 17 September 2015
Safety/Security
UFSCar-Brasil Team impacting society
Introduction
Although poisoning by DEET (active ingredient of the most common commercial repellents) and D-limonene are rare events, it is known that these two substances may be toxic. The absorption of high concentrations of DEET (N, N-diethyl-m-toluamide) can have neurotoxic effect and even be lethal (1,2,3,4,5). D-limonene, if ingested in high concentrations may also cause death (6). Therefore, we conducted a simple test to compare the effect of the two substances on beans development (Phaseolus vulgaris, Fabaceae).
Methods
In order to reduce fungal contamination, water and cotton used in the experiment were sterilized by autoclaving. Beans seeds were immersed in 2.7% hypochlorite and then in 70% ethanol (5 minutes for each solution). The seeds were divided into 5 groups (corresponding to five different treatments), each containing 16 individuals. Each seed was placed on a piece of cotton inside a plastic cup. The groups were placed on a bench in order to receive the same illumination.
All seeds initially received 2 mL of water. Treatments were initiated after 24 hours. The following treatments were administered every 24 hours:
Analysis of results
Beans development At the end of the experiment, all individuals in each group were measured, as seen below: There was a significant difference between the growth of limonene and control groups compared to the group receiving DEET.
Our amazing sponsors!
