×
Didn't find what you were looking for?
Ask a question
Home
Search
Gallery
Blogs
Dictionary
Textbooks
Resource Library
Flashcards
Latest Topics
Ask a Question
Home
Take a Tour
Study Tips
Help Pages
Contact Us
Gallery
Recently Added
Search
Blogs
Dictionary
Add New Word
Random Term
Recent Changes
Resource Library
Share Your Resources
Recently Added
Search
Ask a Question
Log In
Sign Up
homework help
portal
Q & A Board
Gallery
Notes and Downloads
This Board
Research Articles
Entire Website using Google
Forum
Search
Advanced Search
Image Gallery
Resource Library
Browse by
Textbooks
Chat
Subjects
Recent
Posts
•
Latest Topics
•
Unresolved Questions
Top Posters
Since Sunday
A
8
6
R
3
o
2
C
1
1
1
1
y
1
e
1
s
1
This topic contains 1 attachment.
Home
Q & A Board
Biology-Related Homework Help
Cell Biology
Print
New Topic
Legionella pneumophila in hospital water distribution systems has been linked
agent
agent
wrote...
solved
Posts:
4
Rep:
1
0
7 years ago
7 years ago
Legionella pneumophila in hospital water distribution systems has been linked
Legionella pneumophila in hospital water distribution systems has been linked to nosocomial infections. As a result, hospitals are investigating methods for eradicating Legionella in their water systems. Plate counts were used to determine the effects of heat (50°C), ozone, and UV light area. Data are shown below. Which is the most effective method? If the rates continue, which methods(s) will kill all the bacteria in 320 minutes?
table attached, help please lol
Attached file
document 01.docx
(12.44 KB)
You must
login or register
to gain access to this attachment.
Read 4552 times
3
Replies
Report
Related Topics
Solved
Legionella pneumophila is an opportunistic pathogen that
Solved
Legionella pneumophila and Francisella tularensis share the characteristic of
Solved
Legionella pneumophila and Francisella tularensis share all of the following characteristics except
Solved
Infections with Legionella pneumophila are usually transmitted via aerosols from contaminated air ...
Solved
Infection with Legionella pneumophila is usually treated with intravenous erythromycin. (True or false?)
Legionella pneumophila is generally transmitted by
Solved
Infection with Legionella pneumophila is usually treated with intravenous erythromycin.
Solved
Legionellosis, caused by the bacterial respiratory pathogen Legionella pneumophila, has decreased in ...
Show More
Replies
Enni C.
wrote...
#1
A year ago
UV light exposure at 23 degree C kills most bacteria in less time compared to other methods. In 20 minutes, UV light brought down the load of bacteria from 1x107 to 1x103 . Other methods took longer time to achieve the same.
So, UV light treatment of water is the most efficient method among all these.
If the rate continues, all the 3 methods i.e; 50 degree C, Ozone at 23 and UV at 23 can completely kill all the bacteria at 320min.
Report
najjar t.
wrote...
#2
1 months ago
Thanks!
Report
jeromet1
wrote...
#3
1 months ago
The effectiveness of the method is determined by the reduction in the CFU level in the plate after the application of the method. The more is the reduction higher is the efficiency of the method under the given time period. From the table given above UV light at 23 C shows maximum reduction under the 20 minutes, UV light is the most effective method. If the experiment is allowed to run for 320 minutes the heating at 50 C will kill the maximum number of bacteria possible, as the reduction in the CFU level is gradually decreasing with the increase in the time. The reduction is by a factor of 10 for each time the time applied is doubled. The increase in the time to 320 minutes will kill the maximum number of bacteria by heat as compared to the other methods.
Report
New Topic
Quick Reply
[center][color=gray]Please [b]login or register[/b] to leave a reply[/color][/center]
Explore
Post your homework questions and get free online help from our incredible volunteers
130 People Browsing
255 Signed Up Today
Start New Topic
Take the Tour
Study Tips
Topics Trending
New
Browse by Textbook
Related Images
519
123
131
Your Opinion
Do you believe in global warming?
Completely
To a large extent
Needs more research
I'm skeptic
Entirely a myth
Votes: 320
Previous poll results:
Which country would you like to visit for its food?
Latest Blogs
Should government intelligence agencies be trusted?
Simulating the evolution of aggression
"Trust the Science" ?
Nipping Common Gardening Mistakes in the Bud
Fastest mammal in the sea
Ready to ask a question on
Biology Forums
?
Try it out
How is theory testing related to theory building?
–
Legal Studies
Standard molar entropies, S°, in J/Kmol, are given below each reactant and product in the reaction s
–
Chemistry
What attracts people to the development of general or grand theory?
–
Legal Studies
Can you identify which chordates belong to each clade?
–
General Biology
Waugh-Tendulkar Or Ponting-Tendulkar trophy?
–
Mathematics
PhysioEx 9.0 Exercise 3 Activities 1-9 Answered
–
Anatomy and Physiology
A gas under an initial pressure of .60 ATM is compressed at a constant temperature from 27 L to thre
–
Chemistry
Occipital lobe removal?
–
Nursing and Clinical
Woman's harrassment at Corporate workplace.
–
Legal Studies
What is the circuit's impedance in Figure 10-1? a. 418 Ω b. 520 Ω c. 280 Ω d. 120 Ω
–
Electrical Engineering
Loading...