The tert-butyl group has been broadly used to protect functional groups in natural product synthesis such as amino acid‚ peptide and protein chemistry [1]. The tert-butoxycarbonyl (BOC) group is known as protecting group for amides in organic synthesis. The introduction of BOC group improves the solubility of organic precursors and their processability in organic synthesizes [2]. The methyl substituted pyridine derivatives were widely reported for their various biological activities such as anxiolytic
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titration curves which help to identify an unknown amino acid. IntroductionAmino acids are simple monomers which are strung together to form proteins. Amino acids play a key cellular role in structure and function. Proteins themselves participate in nearly every physiological event in the cell. Since all amino acids contain at least one amino and one carboxyl group‚ they are classified as amphoteric substances (meaning that they can act as either an acid or as a base) (1). Treating the zwitterion with
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PLASMID DNA ISOLATION‚ RESTRICTION ENZUME DISGESTION AND AGAROSE GEL ELECTRIPHORESIS Abstract: The gel is covered with an ion- containing buffer‚ such as (TAE)‚ that controls the pH of the system and conducts electricity. overall DNA concentration was lower than expected. Using agarose gel electrophoresis is to separate and visualize the DNA fragment‚ which is produced by restriction enzymes . Introduction: The purpose of this experiment is to measure the size of the fragments of DNA and separate
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INDIVIDUALS A group can range in size from two members to thousands of members. Very small collectives‚ such as dyads (two members) and triads (three members) are groups‚ but so are very large collections of people‚ such as mobs‚ crowds‚ and congregations (Simmel‚ 1902). On average‚ however‚ most groups tend to be relatively small in size‚ ranging from two to seven members. One researcher ( J. James‚ 1953)‚ after counting the number of people in 7405 informal‚ spontaneously formed groups found in
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Speciation Tiffany Johnson SCIE/211 Laura Stepp Purpose What would happen if a species within a population were to suddenly split in two groups by an earthquake that creates a physical barrier like a canyon? Introduction Reproduction is a natural and normal thing in our day to day lives. Animals and humans reproduce offspring‚ all year round. Separation is usually the furthest thing from our minds. But‚ mother natural can always turn anyone’s world upside down. For Example
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There are two types of isolation‚ mental isolation and physical isolation. Physical isolation is when someone is separated from a group of people‚ while mental isolation is when someone feels alone even if they have people around them. Physical isolation can lead to mental isolation (Isolation). The theme of physical and mental isolation is shown throughout "Jane Eyre". This pattern of isolation had a negative effect on Jane Eyre that started at a young age and continued along with her until she
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that isolation can have on a person through the quiet conversation of Mrs. Hale and Mrs. Peters. Glaspell writes‚ “MRS. HALE [Not as if answering that.] I wish you’d seen Minnie Foster when she wore a white dress with blue ribbons and stood up there in the choir and sang. [A look around the room.] Oh‚ I wish I’d come over here once in a while! That was a crime! That was a crime! Who’s going to punish that?” (Glaspell) This quote illustrates for the reader the effects that prolonged isolation has had
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Many times in life‚ we encounter many life changes we can’t seem to control. We even break down to the point that we are unsure of what to do with ourselves. In Charlotte Perkins Gilman’s short story “ The yellow wallpaper” the narrator is very obsessive. It focuses on a woman who’s going through depression and has had a nervous breakdown. Her husband tries to help her by moving her in a home‚ only to keep her upstairs in room (nursery) covered with a yellow wallpaper. He wants her to be isolated
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The short story “A Rose for Emily” by William Faulkner is set in the small southern town of Jefferson. The story reveals the peculiar and bizarre events of Miss Emily Grierson’s life. Miss Emily‚ a supposed monument in the town‚ lives an unusual life. She comes from a well-respected family and is the last Grierson of her town. The mysterious Miss Emily embodies the Old South. Miss Emily holds onto the ways of the Old South and cannot come to terms with the New South. Miss Emily’s resistance to change
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Isolation’s Pains and Complications The experience of isolation has a profound effect on the psychological health of an individual. The first type of isolation‚ forced isolation‚ is the least detrimental because a higher command has ordered the isolation and it cannot be changed. Not fitting into the social landscape or norm‚ and therefore becoming ostracized leads to social isolation‚ or the second type of isolation. Lastly‚ self-inflicted isolation is perhaps the most severe because internal psychological
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