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1. Sample Comparison Essay Topics
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Sample Comparison Essay TopicsSample Comparison Essay Topics

2. The Mining of Metals Industry
Metals have been an important industry for mankind since the Bronze Age, gold and silver are
other important metals that were used for currency and ornamental jewelry. The Industrial
Revolution helped to usher in modern civilization by transforming iron into railway transportation
and high rise buildings in all of the major cities around the world. Concerns for the environment did
not exist as long as the metals could be extracted to fulfill the needs of the masses. Environmental
concerns about miningdidn t even come about in the United States until the Resources Conservation
and Recovery Act (RCRA) in 1976 (EPA 1976). RCRA was the first Environmental Protection
Agency (EPA) regulation that required a study of mining wastes from active surface and
underground mining activities. In 1985 the EPA published the Land Disposal Restrictions Phase IV
which establishes the metal bearing waste treatment standards (EPA 1985). This includes Toxicity
Characteristic waste that is generated from mining processes with high concentration levels. The
EPA also printed the Abandoned Mine Site Characterization and Cleanup Handbook in 2000 to
cover all mining processes and remediation programs (Ceto and Mahmud 2000). The following
pages of this paper will concentrate on the mining practices, present contamination and remediation
factors needed to clean up many sites that are either active or abandoned. The mining of metals can
be separated into three different
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3. Double Helix Lab Report
DNA extraction and the use of PCR to detect genetic diseases
Introduction:
The double helix is indeed a remarkable molecule. Modern man is perhaps 50,000 years old,
civilization has existed for scarcely 10,000 years and the United States for only just over 200 years;
but DNA and RNA have been around for at least several billion years. All that time the double
helix has been there, and active, and yet we are the first creatures on Earth to become aware of its
existence. Francis Crick (1916 2004). DNA, the conductor in the orchestra of life. It defines
everything about us, and studying it, through genetics, is the area of biology that has always
captured my imagination. The idea that we can extract just one strand of someone s DNA and ...
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It is used to amplify a sample of DNA, creating thousands or even millions of copies of a certain
sequence of DNA. The story of modern PCR begins in 1976 with the isolation of Taq polymerase
from the thermophilic bacterium Thermus aquaticus (https://www.thermofisher.com/uk/en/home
/brands/thermo scientific/molecular biology/molecular biology learning center/molecular
biology resource library/spotlight articles/history pcr.html). However, it really became
prominent in 1988 when Kary Mullis, along with the Cetus Corporation, made the enzyme
available for widespread use. This new automated use of PCR quickly made it indispensable to
medical science, being used to detect both hereditary and infectious diseases, clone DNA,
paternity tests (using genetic fingerprints) and DNA based phylogeny. In 1989, Taq Polymerase
was named the molecule of the year by Science magazine. Showing further what a ground
breaking discovery this was in the field of science, Mullis, along with Michael Smith, was
awarded the Nobel Prize in Chemistry in 1993. With this discovery, Kary Mullis had fulfilled the
words of his own quote; Science consistently produces a new crop of miraculous truths and devices
every
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4. The Importance Of Drug Testing And Background Screening
Drug testing and background screening allows staff to be able to separate sexual predators, violent
criminals and drug abusers. This is to protect staff, volunteers and residents from harm and to
determine what type of help abusers need. Drug tests and background screenings are necessary to
ensure the safety of residents, volunteers and staff at the homeless shelter. Homeless shelters
administer background screenings and drug testing to all potential residents. Drug testing is to
determine what type of help they need to provide. Background screenings are to expose any violent
criminals or sexual predators. The purpose of this is to help the shelter meet its goals. Should
homeless shelters administer background screenings and drug tests? Drug testing and background
screenings allow staff to separate sexual predators, violent criminals and drug abusers. This is to
protect staff, volunteers and residents from harm and to determine what help drug and alcohol
abusers need. This is to protect residents, also to provide a safe, comfortable place to live. The
purpose of this is to ensure the safety of residents, volunteers and staff at the shelter. Drugs and
alcohol have always been closely linked to homelessnessand people who have committed violent or
sexual crimes tend to have a harder time finding jobs. Drinking alcohol is a choice, a temporary
solution that makes the problem worse. Because of drug testing upon entering the shelter, Raul was
able to get the
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5. Racism And Chicanos
Throughout the history of the united states racism has played a major role in the development of
the United States and the Chicanos, Americans of Mexican Descent, have been affected greatly by
racism and are still being affected today. However, just as much as the Chicanos have been C
Chicanos, after the Mexican American War to now where Mexican immigrants have been
considered a problem.
Since the early 1600s when the pilgrims came to the United States, there was mistreatment of the
natives as they were non white and they seen as savages by the Englishmen because the natives
did not believe in God as stated in chapter one of A People s History of the United States.
Then as the population had grown in the United States, the wealthy needed ... Show more content on
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Politicians of the Republicans party are strongly against immigration and have created laws that
have discriminately caused racial profiling, violence, harassment and civil liberties being denied
by law enforcement. However Latinos and activists have been defending Chicanos and Latinos
against racist immigration views and laws as they Latinos and activists marched, protested and
with the help of President Obama took down, Arizona s S.B. 1070 which allowed local police to
act as if they were immigration officials and racially profile Latinos to check whether or not they
were documented. In addition, the program of DACA allowed young Latino Immigrants that came
to the United States to temporarily stay in the United States in order to go to school and
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6. Allocating Financial Risk
Allocating Financial Risk 2
Select one of two recent airport PPPs St. Petersburg, Russia, or Rio de Janeiro, Brazil. Describe
the PPP process used and what were the critical issues that needed to be overcome? Assess the
factors that will be crucial to the PPP s future sustainability.
This memo examines the public private partnership used to develop the Pulkovo airport in St
Petersburg, Russia.
Pulkovo was the first airport to be developed in Russia using a PPP. The contract is between three
parties: the St. Petersburg City Government, the Pulkovo Airport Company (100% city owned) and
the Northern Capital Gateway Consortium (NCG), the airport operator with the duty of organizing
the management and development of the airport. The contract started in April 2010 and will remain
in force until 2039.
St. Petersburg is Russia s second largest city after Moscow with around 5 million inhabitants. The
city is home to many domestic and international companies, but its economy also relies heavily on
tourism, hence transport links are crucial to the city s growth. Transport infrastructure had
suffered from long term under investment (KPMG estimated the depletion of Russia s national
airport assets between from 40% to 80%) and in 2008, amid double digit growth in passenger
traffic, the existing airport suffered from overcrowding and would be unable to cater for the 11
million annual passenger traffic projected for 2012. It was also seen as unable to meet the increased
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7. Nt1310 Unit 5 Agression Analysis Paper
As a simple illustration of a k means algorithm, consider the following data set consisting of the
scores of two variables on each of seven individuals: Subject A B 1 1.0 1.0 2 1.5 2.0 3 3.0 4.0 4
5.0 7.0 5 3.5 5.0 6 4.5 5.0 7 3.5 4.5 This data set is to be grouped into two clusters. As a first step
in finding a sensible initial partition, let the A B values of the two individuals furthest apart (using
the Euclidean distance measure), define the initial cluster means, giving: Individual Mean Vector
(centroid) Group 1 1 (1.0, 1.0) Group 2 4 (5.0, 7.0) The remaining individuals are now examined in
sequence and allocated to the cluster to which they are closest, in terms of Euclidean distance to the
cluster mean. The mean vector is recalculated... Show more content on Helpwriting.net ...
So, we compare each individual s distance to its own cluster mean and to that of the opposite
cluster. And we find: Individual Distance to mean (centroid) of Cluster 1 Distance to mean
(centroid) of Cluster 2 1 1.5 5.4 2 0.4 4.3 3 2.1 1.8 4 5.7 1.8 5 3.2 0.7 6 3.8 0.6 7 2.8 1.1 Only
individual 3 is nearer to the mean of the opposite cluster (Cluster 2) than its own (Cluster 1). In
other words, each individual s distance to its own cluster mean should be smaller that the distance
to the other cluster s mean (which is not the case with individual 3). Thus, individual 3 is
relocated to Cluster 2 resulting in the new partition: Individual Mean Vector (centroid) Cluster 1 1,
2 (1.3, 1.5) Cluster 2 3, 4, 5, 6, 7 (3.9, 5.1) The iterative relocation would now continue from this
new partition until no more relocations occur. However, in this example each individual is now
nearer its own cluster mean than that of the other cluster and the iteration stops, choosing the latest
partitioning as the final cluster solution. Also, it is possible that the k means algorithm won t find
a final solution. In this case it would be a good idea to consider stopping the algorithm after a pre
chosen maximum of
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8. Essay about Childhood Cancer Clusters in California’s...
Childhood Cancer Clusters in California s Central Valley Case report :Sakshi Arora March 22,
2012 This case study examines childhood cancers in agricultural communities of Mc Farland and
Earlimart from 1978 to 1995. According to the local residents of these communities the main reason
for cancer is contamination through pesticide in the agricultural farms which is the major source of
employment for the residents of the community. McFarland is a small community in Kern County,
with the population of about 6200, located at the southern end of California s San Joaquin Valley.
They are the main source of cotton and Almond in the area. Census Data of 1980 revealed that 40
percent of the population is less than... Show more content on Helpwriting.net ...
According to the residents, pesticides are the main cause of increasing number of child death
rate in the area. Mcfarland and Earlimart are small communities who are not engaged in lot of
activities. Victim s parents have been examined and most of them reported it is caused by
pesticides whereas some residents living have reported that no such incident has been observed
in their families. Their main occupation is agriculture in the farms where pesticide is being
used. They have reported contamination of water is also one of the reasons for the cancer. The
case unfolds the number of cases which happened with the people throughout the period. They
also reported that in spite of informing the harmful effect of the pesticides to their boss .To
which no action has been taken instead their interference in such matter would a reason of them
to be fired from the job. The figures of The California Department of Food and Agriculture
revealed that there are more than 1,200 cases in California alone in 1986 based on worker
compensation records. Nationwide, one estimate calculated as many as 313,000 pesticide related
illnesses among farm worker each year. Dr. Marion Moses, a San Francisco physician active with
farm worker groups and a member of the pesticide advisory committee of the Environmental
Protection Agency said the main reason for cancer deaths
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9. btec 3 long haul Task 3 Factors assignment P3 M1 D1
Kayleigh Marsh Date: Tuesday 3rd March 2015 Submission Date: Wednesday 11th March 2015
Unit 8: Long Haul Destinations Task 3: Explore the factors affecting long haul destinations P3
M115% still in November.ase .er numbers in the future as security tightens further to keep up with
the constant threat of att Many things will affect people s decision to travel, the destinations they
choose and for how long they stay. Different destinations are affected by different factors, here we
will explore these factors and the destinations they effect. Time Zones Length of flight All journey
times are given in local time which incorporates any addition or subtraction for GMT. This can
cause confusion when working out journey times. There is also... Show more content on
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The chief executive of British Airways announced in 2012 that the complicated process for
Chinese nationals was deterring them from visiting the UK and as a result, the British economy
was suffering with 149,000 Chinese nationals visiting the UK in 2012 compared to the 1.1
million that visited the Schengen area. The Chinese visa process was simplified in 3 ways. The
first, Chinese travel agents can now send the UK application as part of the Schengen visa
application instead of two separate forms, to reduce duplication as many people travelling from
china will not travel solely to the UK. The next, a 24 hour superior priority service and finally a
mobile visa service cutting the entire process time to less than 5 minutes. This has already made a
significant difference in the number of Chinese tourists arriving in the Uk with figures for the first
half of 2015 up 4% on the same period of the previous year. Although this example is based around
a relatively specific group of people, it demonstrates how the visa application process can heavily
effect tourist habits to a destination. Another common entry requirement in certain parts of the
world its of the world are