Summarize the points made in the lecture, being sure to explain how they oppose specific points made in the reading passage.
Air purifiers are being used to protect our health from air pollution. Many different types of air purifiers have been invented for better effects. Here are some of the most widely used air purifiers.
HEPA filters are effective at removing allergens such as dust or pollens without producing secondary pollution. The folded fiber sheets of the HEPA filters trap toxic substances when the absorbed particles come into contact with the fiber. Once any large enough particle is absorbed, the filter will produce cleaner air in an eco-friendly way.
Ozone-generating air purifiers remove unpleasant smells and airborne chemicals. This can be done with the help of ozone, which creates a special reaction when it comes in contact with hazardous substances. Also, ozone has a pleasant smell like air fresheners. These two features of ozone-generating filters appeal to many customers.
UV air purifiers directly react with the air and remove harmful bacteria in it. It is especially useful when removing harmful microscopic particles in the atmosphere. This results in a better environment to live in with cleaner air to breathe. Moreover, UV air filters operate so quietly that it is hard to hear them working.
The reading and lecture are both about some commonly used air purifiers. Where as the author of the reading states pros of these purifiers, the lecturer suggests that there are some cones for each filter. The lecturer casts doubts on the main points made in the reading by providing three reasons.
First of all, the according to the reading, HEPA filters are capable in trapping large pollutant particles without producing secondary pollution. However, the lecturer disputes this point. He says that these filters are incapable in getting rid from small particles like viruses. Furthermore, he mentions that these viruses grow and multiply on the filter itself and then get mix with the air it produce. Hence, cause pollution.
Secondly, the reading states that ozone generating filters remove airbone chemicals by help of ozone reaction and than producing a pleasant smell. Nevertheless, the lecturer refutes this argument. he argues that these filters are hazardous. As ozone generated by these filters is very high in concentration which can be harmful for our body and can cause skin irritation and could be extreme dangerous for eyes. Furthermore, he added that ozone react same as gasoline and that's why it make it even more dangerous.
Finally, the reading claims that uv air purifiers remove bacterias from air which are harmful and it operate quietly. On the other hand, the lecturer belives that these filters can not clear microscopic particles like dust and also fail in removing unpleasant smell from air.
In conclusion, although the reading and lecture are both about air purifiers, the three main points made in the reading are effectively challenged by the lecturer.
| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2020-08-26 | shwetarathee19 | 80 | view |
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Grammar and spelling errors:
Line 1, column 74, Rule ID: WHERE_AS[1]
Message: Did you mean 'Whereas'?
Suggestion: Whereas
...about some commonly used air purifiers. Where as the author of the reading states pros o...
^^^^^^^^
Line 2, column 396, Rule ID: IT_VBZ[1]
Message: Did you mean 'produces'?
Suggestion: produces
...itself and then get mix with the air it produce. Hence, cause pollution. Secondly, the...
^^^^^^^
Line 3, column 115, Rule ID: AND_THAN[1]
Message: Did you mean 'then'?
Suggestion: then
...chemicals by help of ozone reaction and than producing a pleasant smell. Nevertheles...
^^^^
Line 3, column 197, Rule ID: UPPERCASE_SENTENCE_START
Message: This sentence does not start with an uppercase letter
Suggestion: He
...ss, the lecturer refutes this argument. he argues that these filters are hazardous...
^^
Line 3, column 472, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: that's
...d that ozone react same as gasoline and thats why it make it even more dangerous. Fi...
^^^^^
Line 3, column 485, Rule ID: IT_VBZ[1]
Message: Did you mean 'makes'?
Suggestion: makes
...react same as gasoline and thats why it make it even more dangerous. Finally, the r...
^^^^
Line 4, column 102, Rule ID: IT_VBZ[1]
Message: Did you mean 'operates'?
Suggestion: operates
...erias from air which are harmful and it operate quietly. On the other hand, the lecture...
^^^^^^^
Transition Words or Phrases used:
also, finally, first, furthermore, hence, however, if, nevertheless, second, secondly, so, then, in conclusion, first of all, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 11.0 10.4613686534 105% => OK
Auxiliary verbs: 4.0 5.04856512141 79% => OK
Conjunction : 10.0 7.30242825607 137% => OK
Relative clauses : 11.0 12.0772626932 91% => OK
Pronoun: 26.0 22.412803532 116% => OK
Preposition: 28.0 30.3222958057 92% => OK
Nominalization: 6.0 5.01324503311 120% => OK
Performance on vocabulary words:
No of characters: 1417.0 1373.03311258 103% => OK
No of words: 272.0 270.72406181 100% => OK
Chars per words: 5.20955882353 5.08290768461 102% => OK
Fourth root words length: 4.06108636974 4.04702891845 100% => OK
Word Length SD: 2.57973778458 2.5805825403 100% => OK
Unique words: 152.0 145.348785872 105% => OK
Unique words percentage: 0.558823529412 0.540411800872 103% => OK
syllable_count: 440.1 419.366225166 105% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 4.0 3.25607064018 123% => OK
Article: 10.0 8.23620309051 121% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 0.0 1.51434878587 0% => OK
Preposition: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 16.0 13.0662251656 122% => OK
Sentence length: 17.0 21.2450331126 80% => The Avg. Sentence Length is relatively short.
Sentence length SD: 46.0386641178 49.2860985944 93% => OK
Chars per sentence: 88.5625 110.228320801 80% => OK
Words per sentence: 17.0 21.698381199 78% => OK
Discourse Markers: 8.9375 7.06452816374 127% => OK
Paragraphs: 5.0 4.09492273731 122% => OK
Language errors: 7.0 4.19205298013 167% => OK
Sentences with positive sentiment : 3.0 4.33554083885 69% => OK
Sentences with negative sentiment : 8.0 4.45695364238 179% => OK
Sentences with neutral sentiment: 5.0 4.27373068433 117% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.250050778711 0.272083759551 92% => OK
Sentence topic coherence: 0.0817312908581 0.0996497079465 82% => OK
Sentence topic coherence SD: 0.0752832751203 0.0662205650399 114% => OK
Paragraph topic coherence: 0.155019254092 0.162205337803 96% => OK
Paragraph topic coherence SD: 0.0641460149347 0.0443174109184 145% => OK
Essay readability:
automated_readability_index: 11.6 13.3589403974 87% => Automated_readability_index is low.
flesch_reading_ease: 54.22 53.8541721854 101% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 9.9 11.0289183223 90% => OK
coleman_liau_index: 12.64 12.2367328918 103% => OK
dale_chall_readability_score: 8.08 8.42419426049 96% => OK
difficult_words: 62.0 63.6247240618 97% => OK
linsear_write_formula: 6.5 10.7273730684 61% => OK
gunning_fog: 8.8 10.498013245 84% => OK
text_standard: 10.0 11.2008830022 89% => OK
What are above readability scores?
---------------------
Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 Out of 30
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.