Cotton swab

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    Oxidase Test Lab Report

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    MATERIALS AND METHODS The first day of the independent experiment was on October 25, 2016. Mannitol Salt Agar and Phenylethanol Agar are selective media that were used to isolate M. luteus from the environmental samples. Sterile cotton swabs were used to obtain the samples from the skin, arms and dust through wiping the surface of the sample source. A handful of backyard soil was previously diluted and then 2mL of this diluted soil was transferred to a sterile test tube containing 9mL water using a pipette. Four MSA and four PEA plates were used for isolation. PEA plate number 1 was divided into three parts and was used to isolate all of the samples obtained from the skin by rolling the cotton swabs on the surface of the medium. PEA plate number…

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    Lifeheet Experiment

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    things, was used to measure heart rate (HR) and RSA. RSA is used to determine automatic “cardiac control” by the brain in a subject and is a measurement of changes in heart rate during a respiratory period. HR and RSA were measured every five minutes between the introduction of the subjects to the TSST and approximately thirty minutes after completion of the TSST [11]. In addition to monitoring HR and RSA, measurements of cortisol and salivary alpha-amylase (sAA) in each subject were also…

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    and subject posture and activity levels among other things. RSA is a measurement of changes in heart rate during a respiratory period used to denote automatic cardiac control by the brain in a subject. HR and RSA were measured every five minutes between the introduction of the subjects to the TSST and approximately thirty minutes after completion of the TSST [11]. In addition to monitoring HR and RSA, measurements of cortisol and salivary alpha-amylase (sAA) in each subject were also recorded.…

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    The role that Eli Whitney played in America’s industrial revolution was his inventions, and the thought that he revolutionized both cotton production and weapons manufacturing. The growth of the textile industry in England created enormous demand for cotton, a demand that planters in the South were finding impossible to meet. There greatest obstacle was separating the seeds from cotton fiber, which was a difficult and time consuming process that was essential before cotton was sold. Long-staple…

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    Throughout Earth’s history, agriculture has been a vital component of every society, providing citizens with the food and nourishment necessary to survive. During this time, agriculture has undergone substantial developments to improve the efficiency, crop yield, and commercialization to sustain the increasing population. Inventions such as the McCormick reaper, liberating workers from the grueling task of harvesting grain, and the cotton gin, replacing hundreds of man-hours by increasing…

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    tailors to create dresses and skirts with volume. Organza is also a very strong fabric, so do not be tricked by its sheer look. Organza is traditionally made from silk. Its cotton variety is called organdy, and it has similar properties to organza. Nowadays, you can find all kinds of organza fabric, both natural and synthetic. An everybody’s favourite for evening and wedding gowns, this stiff material has a subtle sheen. What Is Organza Fabric Like? / Organza Fabric Characteristics Organza…

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    been said that the “king of cotton” during the time of slavery, was the state of South Carolina. With its rich soils and warm humid temperatures, South Carolina was the biggest and most successful cotton manufacturer in all of the south. Not only were there millions of slave hands making it possible for this commodity to become so significant, but those same hands made South Carolina very rich. Before cotton became a popular commodity in the south, crops such as indigo, maize or corn, and rice…

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    US History December 6 2015 Eli Whitney and the Cotton Gin In the late 18th century, plantations and cash crops were becoming less profitable. As a result, on March 14, 1794, Eli Whitney invented the cotton gin and plantation owners looked to cotton farming as a faster way to get rich. With the emergence of textile industries and cotton farming, the cotton gin did its job and led the way towards an economic boom in America. Conflict between the north and south began as these immense plantations…

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    Sock Monkey Research Paper

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    In 1870, the first sock was knitted by a machine invented by a Swedish immigrant. The inventor’s name is John Nelson. With his innovation, he opened a factory to produce mittens and he eventually decided to make socks with his machine. The factory he founded is located in Rockford, Illinois. His sock factory with automatic knitting machines, eventually led to the creation of the distinguished red heeled sock monkey. Sock Monkeys can be found in numerous households and became a popular craft in…

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    In 1793, Eli Whitney invented the cotton gin in the United States. This machine sped up the manual process of separating cotton fibers from their seeds, allowing more output to be produced in less time. The process of refining the cotton became less labor-intensive, as less labor is needed to produce the same amount of output. The invention made cotton a very profitable crop across the South. However, labor was still needed to harvest the crop. Despite the terrible consequences of increased…

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