Your search returned 135 essays for "Ester":
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Parallel Combinational Chemistry to Produce Ester

- Esters are defined as molecules consisting of a carbonyl group which is adjacent to an ether linkage. They are polar molecules which are less polar than alcohols but more so than ethers, due to their degree of hydrogen bonding ability. Most often derived from reacting an alcohol with a carboxylic acid, esters are a unique, ubiquitous class of compounds with many useful applications in both natural and industrial processes 1. For example, within mammals, esters are used in triglycerides and other lipids as they are the main functional group attacking fatty acids to the glycerol chain 2....   [tags: fisher esterification,carboxylic acid, grape odour]

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Is Triglyceride or Ethel Ester Fish Oil Better?

- The Truth about Fish Oil The purpose of this report is to explore the controversial dispute between the quality of two different forms of fish oil supplementation; Triglyceride (TG) and Ethyl Ester (EE). Fish oil can be implemented into a diet by eating either fish or taking supplements. Fish oil is extracted from selected fish that contain highly beneficial healthy oils known as omega-3 fatty acids, two of the most important omega-3 fatty acids that are found in fish oil are Docosahexaenoic Acid (DHA) and Eicosapentaenoic Acid (EPA)....   [tags: acid, body, vitamin]

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Character Analysis of Ester Greenwood in The Bell Jar

- In the disturbingly passionate novel, The Bell Jar, Esther Greenwood begins her spiraling journey into madness because of her struggles with trust and preset expectations. Once a small town girl, Esther feels like she is not truly enjoying the experiences New York has to offer her. Knowing that she is very fortunate that her writing skills and exceptional grades have given her this opportunity, Esther desperately tries to be thankful for winning the contest but just can’t. The story deliberately starts with Esther voicing her opinion about The Rosenberg Electrocution trial....   [tags: journey, trust, expectations]

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Equilibrium Constant of an Ester Hydrolysis Reaction

- The Equilibrium Constant of an Ester Hydrolysis Reaction Abstract The first step in determining the equilibrium constant of an ester hydrolysis reaction is to prepare five different reaction mixtures with the volume given in Table 1. the bottles have different mixtures of HCl, H2O, an unknown ester, and one bottle has alcohol. We will later determine the equilibrium constant for the reaction between the unknown ester and water to produce an unknown alcohol, and unknown acid....   [tags: Chemistry]

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ROP Mechanism: Cyclic Ester Polymerization by Tin(II) Octoate

- Introduction Polymerization of cyclic esters has attracted a lot of interest for the synthesis of biodegradabale/ biocompatible polymeric materials, such as polylactide, polyglycolide and also other polymer compound such as linear polycarbonate. Ring opening polymerization of cyclic ester compounds is better than step polymerization for obtaining high Mw polymers in a controlled “living” fashion, while avoiding the formation of by-products. Tin octoate (tin(II) bis(2-ethyl hexanoate)), Sn(Oct)2) is one of the most used initiator in the polymerization of cyclic esters....   [tags: Research Analysis]

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Ester's Search in Sylvia Plath's The Bell Jar

- Ester's Search in The Bell Jar “I couldn’t stand the idea of a woman having to have a single pure life and a man being able to have a double life, one pure and one not” (Plath 66). Ester is against the conventional attitude of what a woman’s place in society is and expresses this in a number of ways throughout the book. Ester tells us her views on the sexual relationship between a man and a woman, motherhood, and the kind of career that is considered practical. Ester’s view on purity is described in the above quote, and as a result she feels the need to lose her virginity....   [tags: Plath Bell Jar Essays]

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The Bell Jar by Sylvia Plath

- Literature is the superlative resource when one is attempting to comprehend or fathom how society has transformed over the centuries. Many written works—whether fictional or nonfictional—express the views of gender roles and societies’ expectations. Sylvia Plath’s The Bell Jar is an exemplary novel that explores these issues. Ester Greenwood was portrayed the superficial and oppressive values of the mid-twentieth century American society through her experiences of gender inequalities and social conformities....   [tags: society, gender stereotype ]

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Preparing and Observing the Properties of Esthers

- ... Apparatus and Materials  Hot Plate  1 Test tube  Test tube rack  Methanol (2 ml)  Concentrated sulphuric acid (4 drops)  250 ml beaker  Test tube holder  Salicylic acid (2grams)  Electronic balance  Evaporating dish Method and Procedures  2 ml of methanol was poured in a test tube  1 gram of salicylic acid was added  4 drops of concentrated sulphuric acid was then added to the solution in the test tube.  The test tube was then placed in a beaker filled with water and placed on the hot plate until it got to a gentle boil....   [tags: chemistry experiments]

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Phytochemical & Antioxidant Activity

- 3. Results and Discussion 3.1. Phytochemical analysis Phytochemicals, especially phenolics are known to be major bioactive compounds for health benefits. Plant extracts containing different classes of polyphenols are very attractive in the food industry. Therefore, in this study, the total phenolics content and total flavonoids content of the faba beans’ extract were investigated. Folin-Ciocalteu phenol method estimated a total phenolic content of 22.415 GAE equivalents (µg GAE/mg sample). The presence of a high phenolic amount in the faba seeds indicates its potential as a good natural antioxidant....   [tags: UNderutilized Legume Vicia Faba Seeds]

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Energy Demand

- 1. Introduction Due to the economic growth, the energy demand of the world increase every year. In the energy conversion process in power plants and small engines, energy efficiency is a key factor. The equipments with higher efficiency, the more work output. Therefore, a number of researches studied on thermodynamics of efficiency, irreversibility and exergy in both spark-ignition and compression-ignition engines were found during the last century. The thermal efficiency and the energy loss in the system are normally calculated from the 1st law of thermodynamics, while the maximum work output or exergy is characterized by the 2nd law of thermodynamics....   [tags: Environment, Thermodynamics]

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Questions and Answers: Associationistic Theory of Learning

- Associationistic 1. Define and describe what is meant by an Associationistic Theory of Learning. (1/2 point) To understand the meaning of Associationistic Theory of learning is relevant to understanding what associationistic means. Associationistic is a "school of psychology that holds that the content of consciousness can be explain by the association and reassociation of irreducible sensory and perceptual elements" ("Associationistic," 2014). Therefore, the point to all associationist theories is that there are associations made that leads to learning....   [tags: pavlov, classical conditioning]

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Chemistry Lab: Molecular Formulas

- In 2 week long Chemistry lab I was given unknown liquid numbered 29 which I had to find through the experiments that I learned from the beginning of the semester. After conducting experiments I acquired empirical formula, molecular weight, molecular formula, density and boiling point temperature in order for me to find what the substance is. Using molecular formula I plan on looking into few websites that my professor provided us such as: ChemBlink, ChemSpider and PubChem to help me find what substances I should be looking into....   [tags: ChemBlink, ChemSpider and PubChem]

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History of Glow Sticks

- A glow stick is a self-reliant, instant light source. It consists of a translucent plastic tube containing secluded substances when combined can produce light. It does not require any extra external energy sources. The light cannot be turned off after it is “lite”, but it is said that glow sticks can actually be used again by putting it in the freezer overnight then cracking it once more. Glow sticks are used in many ways some for emergency settings, recreation, entertainment, and in the military because they are portable and easy to activate....   [tags: usage, entertainment, energy sources]

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Negative Effects of Pesticides

- ... (2012). Physics and Chemistry: Encyclopedia of Earth. Acetylcholine (ACh) is one of the most prevalent neurotransmitters found within an animal's nervous system. It functions in both the peripheral and central nervous systems and is highly active in the somatic nervous system as well. ACh can elicit an inhibitory effect of lowering the heart rate but primarily behaves in an excitatory manner, contracting skeletal muscle. Disruptions or inadequate production of ACh have shown to be associated with dementia and irregular sleep rhythms.⁵ Looking more closely at the biology, acetylcholine is released by a neuron which then diffuses across the synaptic cleft, or gap between neurons, and bi...   [tags: acute cholinergic syndrome, chemicals]

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Heterocyclic Chemistry: The Knorr Synthesis of Pyrroles

- The Knorr synthesis of the pyrrole, 2,4-diethoxycarbonyl-3,5-dimethylpyrrole, was achieved using an α-amino ketone, ethyl acetoaminoacetate and reacting it with its predecesso r, ethyl acetoacetate in a double condensation reaction . The product was analysed by 1H NMR, 13C NMR, mass spectrometry and IR spectroscopy giving positive results . Introduction Pyrrole has been a molecule of great interest due to its heterocyclic aromatic properties. The lone pair on the nitrogen is delocalised within the ring, causing the heterocycle to be electron-rich ....   [tags: Chemistry]

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Chemistry of Taste and Smell

- The human body does amazing things on a daily basis. All the senses that the body uses consists of nerves, neurotransmitters and the brain decodes the messages that was received. Smell is the passing of odorants through the nose, received by the olfactory cells, and are sent directly to the brain. Taste is the weakest of the five senses but it is the sensory function of the central nervous system( The Science of Taste and Smell). We taste and smell things every day but little do most people know that these two senses work together to make life even more satisfactory....   [tags: Chemistry Essays]

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Tests on the Medical Effectivness of Phlomis Younghusbandii Mukerjee

- ... Good dose-dependent effects were obtained in most of these tests, except in the hot plate test and the acetic acid-induced Evans blue leakage test. These findings suggested that the aqueous extract of P. Younghusbandii, abundance with iridoid glycosides and phenylethanoid glycosides, has significant antinociceptive and anti-inflammatory activities. Keywords:Phlomis Younghusbandii Mukerjee; Iridoid glycoside; phenylethanoid glycosides; Antinociceptive activity; Anti-inflammatory activity Abbreviations: AEPY, Aqueous extract of Phlomis Younghusbandii Mukerjee HPLC, High performance liquid chromatography; LD50, Median lethal dose; ERP, Edema Ratio Phlomis YounghusbandiiMukerjee is a pere...   [tags: anti-inflammatory, antinociceptive, phenylethanoid]

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Fossil Fuel Leads to Pollution

- ... [2].Bio-diesel is defined as the mono-alkyl esters of fatty acids derived from vegetable oils or animal oils. In simple terms, bio-diesel is the product when a vegetable oil or animal oil chemically reacts with an alcohol (methanol, ethanol, propanol and butanol) to produce a fatty acid alkyl ester. Different types of catalyst are used. Glycerol is produced as a byproduct. Bio-diesel can be synthesized from vegetable oils, animal oils and recycled cooking oils [3]. Edible vegetable oils such as canola, soybean, sun flower and corn have been used for bio-diesel production and are proven diesel substitutes [4, 5]....   [tags: diesiel engines, bio-diesiel]

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Grace Throughout the Bible

- I will look at the lives of Moses, Haggai and Ester who with God’s grace overcame huge obstacles in their families, situations, and beliefs to further God’s Kingdom in amazing ways. In Philip Yancey’s Book What’s so Amazing About Grace. Yancey says that grace, “Contains the essence of the gospel as a drop of water can contain the image of the sun.” (Yancey, 12) This and God’s promise that his grace will never leave us makes grace an incredible theme throughout the Bible. Grace is an incredible thing that is defined in a variety of ways....   [tags: Overcoming Imperfection, Esther, Moses]

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Identifying an Organic Unknown

- Identifying an Organic Unknown Aim: In this investigation I will get a number of unknown organic compounds. Which i have to identify by using a number of different chemical and physical techniques. The only thing is known about the compound is that it contains one of the functional group: alcohol, aldehyde, ketone, carboxylic acid, phenol and ester. Therefore I devised a sequence of tests that would identify which one of the groups the sample contains. The flow chart below shows the chemical techniques, which I will use to identify the functional group of the unknown....   [tags: Papers]

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Optimization of Ritalin for more Effective Results

- Ritalin (Methylphenidate) Optimization Ritalin Pills Abstract: Attention-deficit hyperactivity disorder (ADHD) is currently the dominating psychiatric disorder found in children. The creation of the drug Ritalin based on the molecule Methylphenidate in the early 90’s sparked a widespread use of this psycho stimulant, which still remains as one of the most popular drugs used to counteract the symptoms of ADHD. My ultimate goal in this research project is to design analogs for the drug Ritalin in the hopes of discovering a more effective version of this medication....   [tags: Methylphenidate Pills Medication ADD ADHD]

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1453 words | (4.2 pages) | Preview

Chemistry: Gas-Liquid Chromatography

- Extraction To obtain oils from plant materials steam distillation is typically used. Solvent extraction is also used to create a resinoid (resembling characteristics of resin). Solvent extraction is commonly used with volatile substances that may be lost with distillation. Solvent used are pentane, hexane, and mixes of solvents such as ethyl acetate and hexane which is commonly used in place of benzene (see Figure 2). Gas-Liquid Chromatography Gas-Liquid Chromatography is the process of separating complex mixtures into the components and measuring the individual components....   [tags: extraction, resinoid, benzene]

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Purim the Jewish Holiday

- Response Paper Purim Purim is the Jewish holiday commemorating how the Jews of Persia escaped total annihilation thanks to the bravery of Queen Ester. Purim occurs on the 14th of Adar, (or in certain walled cities like Jerusalem, the 15th of Adar.) which this year falls on the 21st of March. The story of Purim is recounted in the Book of Esther, found in the Hebrew Bible. Set in Persia roughly 2,300 years ago, the story tells of how a series of events came together to save the Jewish people from genocide....   [tags: essays research papers]

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“Seeing Through the Bell Jar: Distorted Female Identity in Cold War America

- The essay “Seeing Through the Bell Jar: Distorted Female Identity in Cold War America” by Rosi Smith, argues that the book, “The Bell Jar”, by Sylvia Plath is about women in 1950s America who struggled to find their personal identities outside what was defined by the Cold War Ideology of the role of women in the household. According to Smith, the character Esther Greenwood’s inability to integrate her identity is because of the state of the political environment and time frame in which the book is written....   [tags: Literature]

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1453 words | (4.2 pages) | Preview

Biology: Hydrolysis of Lipids Using an Enzyme Called ‘Lipase’

- Hydrolysis of Lipids Using an Enzyme Called ‘Lipase’ Research and Rationale Enzymes Enzymes are made up of proteins that are available in every cell of a living plant and animal [9] .Enzymes are very important for biochemical reactions. They act as catalysts and speed up biochemical reactions by using ‘an alternative reaction pathway of lower activation energy’ [5].Enzymes either starts a chemical reaction or allows it to occur faster [9]. Enzymes do not experience enduring changes therefore; remain unchanged at the end of the reaction [9]....   [tags: triglycerides, energy, molecule]

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The Effects of Hurricanes in Bananas Plantation

- After receiving alarming news from the Cavendish Distilling Company or CDC, about their delicious Banana Elixir. It seems after Hurricane Floyd they lost the majority of their bananas’ and are now in need of an alternative source for a banana flavoring, to avoid bankruptcy. Luckily for the CDC, there is a known way to get the chemical that can be used in place of the oil from a banana. That chemical in this experiment will be known as isopentyl acetate. Isopentyl acetate is an Ester, an Esters are usually created from reacting a carboxylic acid with an alcohol, along this an acid catalyst....   [tags: Isopentyl acetate, banana elixir, destillation]

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The Adverse Effects of Consuming Artificial Sweetners

- Today a percentage of the population is addicted to sugar and over the years sugar has been given a bad reputation that if you consume too much you will have a higher risk of developing some type of disease. Well in attempt to live a healthy life, people today are relying on artificial sweeteners. With this notion, the question still today is whether or not artificial sweeteners are healthier then just consuming regular table sugar. This paper will discuss the adverse affects of consuming artificial sweeteners and the effects they have on a person’s body....   [tags: saccharin, aspartame, cancerogene]

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The Devil's Arithmetic by Jane Yolen

- The Devil’s Arithmetic Independent Reading Response Questions, Chapters 6-9: 1) Hannah reveals that her best friend is Rosemary, a Catholic girl, and states, “As if that matters (p. 46).” As Chaya, her new friends are in shock upon hearing this. Ester states, “My father will not even let me talk to a goy (p. 47).” Why will Ester’s father not allow this. Why is Hannah not bothered by it. Use text evidence to support your response. Answer: Esther states, “My father will not even let me talk to a goy.” Her father does not want Esther to be friend with a goy, because he thinks that the goy will influence Esther, negatively....   [tags: independent reading response questions]

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Biodiesel Production Using Supercritical Methanol

- A major part of all the energy produced worldwide comes from fossil fuel sources. These sources are limited and are depleting at a fast pace. The depletion of these fossil sources has led to the search of alternative fuels from renewable sources like plant biomass. Vegetable oil is one such renewable source. Vegetable oil has gained much attention in recent years since it has many environmental benefits and it can be obtained from renewable sources. The energy from vegetable oil can be tapped by converting it to biodiesel....   [tags: fossil fuels, vegetable oil, biodiesel]

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Carbohydrates, Fat, and Protein

- Animals and plants each require their own unique form of carbohydrates, fats, and protein to function. Humans have many chemical compounds found in the body, each classified as different macromolecules. Macromolecules include fats, carbohydrates, lipids, and nucleotides. Each performing their own unique function in the human body. Carbohydrates, or carbs, are used to spare the use of protein in the body and use it as energy. Carbs can be found in many foods, such as grains, fruits and milk products....   [tags: Humans, Chemical Compunds, Human Sciences]

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Esther in the Bible

- The book of Esther tells the faithfulness of one woman and her uncle. It is only one of two books that contain the heroism and bravery of a woman heroine. The story of Esther accomplishes two profound things, the first: “To demonstrate God’s providential care of his people, even those outside the land of Israel, and 2) to commend the observance of the feast of Purim by relating how it originated” (Breneman 289).Unlike the rest of the Bible the story of Esther does not directly state or talk about God, but instead shows God’s plans for all of our lives and how in all frightening moments of life, He remains faithful to those who trust and have faith in Him....   [tags: God's Plan, Faith in God, Bible, God]

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Importance of Costumes in As You Like It, Twelfth Night, and Henry IV, Part One

- Importance of Costumes in As You Like It, Twelfth Night, and Henry IV, Part One The Jewish holiday Purim celebrates the rescue of the ancient Jews of Persia from certain destruction at the hands of Haman. The fair queen Ester tricks the villain, and Haman betrays himself before the king. Each year the story is read aloud amidst great celebration. The children, and even the adults, dress up as their favorite character in the story. Each time Haman’s name is uttered, everyone makes as much noise as they can to blot out his evil name....   [tags: As You Like It]

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The Structure of Nucleic Acid Chains

- The Structure of Nucleic Acid Chains Nucleotides are joined together in DNA and RNA by phosphate ester bonds between the phosphate component of one nucleotide and the sugar component of the next nucleotide. An ester bond is a bond which occurs between a Carbon atom and an Oxygen atom. More and more nucleotides can be added on by the same process of forming ester bonds until an immense chain is formed. But no matter how long a polynucleotide chain is, one end of the nucleic acid molecule always has a free -OH group on the sugar at the Carbon known as C3' (called the 3' end) and the other end of the molecule always has a phosphoric acid group at C5' (the 5' end)....   [tags: Papers]

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Structure and Biological Significance of Lipids

- Structure and Biological Significance of Lipids Lipids are made up of a wide variety of molecules, but they all contain carbon, hydrogen and oxygen, with a much higher percentage of carbon and hydrogen molecules than oxygen. There are three kinds of lipids in living organisms: triglycerides, phospholipids and steroids (hormones). Triglycerides are made up of a glycerol molecule, with three fatty acid chains attached by ester linkages. Glycerol is an alcohol containing 3 carbon atoms....   [tags: Papers]

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Dietary Factors in Preventing Heart Disease

- Dietary Factors in Preventing Heart Disease As coronary heart disease is the leading cause of death in the UK, more attention should be paid to preventing the disease. Many patients suffering from heart disease realise that it was mainly caused by their diet. Research has shown that elevated levels of LDL cholesterol are associated with increased risk of heart disease. “ Studies indicate that for every 1% elevation in the bad cholesterol there is a 2% increase in risk of heart disease” (A leaflet on heart disease.) Continually it has been proved that a low-fat, high fibre diet rich in unrefined complex carbohydrates helps lower the risk of heart disease and i...   [tags: Papers]

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Nature of a Diamond

- The unique nature of diamond is heavily dependent upon its composition, crystal structure, and mechanical, thermal, and electromagnetic properties.1 Of those dependencies, composition exacts the most influence over the characteristics. Crystal structure is the repeating pattern of diamond’s composition, and each of the properties are the result of molecular interaction which is determined by composition. Therefore, composition is paramount in the determination of the qualities of diamond. Before its discovery, adamantane was known as decaterpene, the name applied by Decker to his tricyclic hydrocarbon....   [tags: essays research papers]

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Book Summary

- Addy is a nine year old girl who lives with her Momma, Pappa, Sam her 15 year old brother and her one year old sister Ester. Addy and her family are slaves who work for Master Stevens. One night on a summer night sleep Addy heard her parents talking about running away. Pappa wanted Addy to be free. He is sick and tired of seeing his children work so hard. They were talking about how they have to take a chance. Pappa did not want to wait till the war was over. He wanted to be free, and to be able to run free and feel freedom....   [tags: Book Review Summary]

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The Element Lanthanum

- Introduction Lanthanum (La) is a member of the rare earth elements (REEs), which consist of a group of 15 trivalent metallic elements with similar properties. Lanthanum is mostly dangerous in the working environment, due to the fact that damps and gasses can be inhaled with air. This can cause lung embolism, especially during long-term exposure. Lanthanum can also cause cancer with humans, as it enlarges the chances of lung cancer when it is inhaled. Finally, it can be a threat to the liver when it accumulates in the human body....   [tags: metals, detection, toxic]

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Characterization of Three Piperine Analogs of Dipeptidyl Boronic Acid

- In the present study three piperine analogs of dipeptidyl boronic acid (1 to 3) were synthesized. Structures of the synthesized compounds were characterized by spectral studies. All the compounds were screened for their antineoplastic activity against three cancer cell lines and antimicrobial activity against seven bacterial and five fungal species. In vitro results showed that most of the compounds displayed moderate to good inhibitory activitiy on the tested cancer cell lines, among them compound 1 showed excelent antitumor activity where as Compound 3 was found to be potent antimicrobial agent against Asperigillus fumigates at a concentration of 62 µg/mL than other tested compounds and t...   [tags: antineoplastic, drug, anticancer]

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Chemistry and Technology in Biodiesel

- ... The diesel engine was originally intended to run on bio-fuel such as vegetable oil, rather than the petroleum-based diesel fuels mainly used today. Therefore society did not know what it was like to run petroleum-based diesel fuel before biodiesel was invented. Biodiesel gives a cleaner diesel fuel to run in vehicles. It does not give off the bad pollutions like a petroleum-based diesel fuel when burned. Therefore it is affecting society in a positive way, by not polluting the air. The resources to make biodiesel are organic, it is a renewable resource so, practically the resources will never run out to make the fuel so resources do not affect the fuel from being made....   [tags: cleaner fuels for internal combustion engines]

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The Structure of Lipid A

- Lipid A is considered as the hydrophobic lipid moiety of the LPS molecule. Lipid A is basically phosphorylated glucosamine disaccharide with many fatty acids attached to it. This portion of the LPS is responsible for its endotoxic activity (Rietschel et al., 1982). Lipid A is the agent capable of inducing various endotoxic reactions such as fever, Shwartzman reaction, activation of immune cells, lethal toxicity etc (Galanos et al 1985; Rietschel et al, 1987). Lipid A is embedded in the lipid bilayer of outer membrane and is necessary for a functional membrane barrier function (Wyckoff et al., 1998)....   [tags: endotoxicity, LPS, hydrophobic]

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The Two-Faced Detergent

- Whether soil particles are attached to carpet fibers, wood floors or restroom sinks, they need to be removed. But how is this done. Most of us wipe or scrub a dirty surface with soap and water without a second thought about how they actually work to remove soil. The process of removing dirt begins at the molecular level. In order to understand how soap works, we must first acknowledge what soap actually does. By definition, soap is a mixture of sodium or potassium salts and long chain organic acids....   [tags: informative essay]

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Research Paper: The research on using a Tethered Agonist Approach to Map the Structure of the Receptor

- The tethered agonist approach to mapping ion channel proteins – toward a structural model for the agonist binding site of the nicotinic acetylcholine receptor. Research by Lintong Li, Wenge Zhong, Niki Zacharias, Caroline Gibbs, Henry A Lester, Dennis A. Dougherty. Condensation of the Research Purpose of the Study: The purpose of the study was to develop a structural model for the nicotinic acetylcholine receptor and use newer techniques to more easily understand the structure and function of membrane proteins....   [tags: essays research papers]

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Inhibition of Nitric Oxide Synthase Impairs a Distinct Form of Long-Term Memory in the Honeybee

- Introduction Nitric oxide (NO), which has demonstrated plasticity regarding processes of learning and memory, has revealed its specific function in memory formation for the honeybee. The predominant amount of NO synthase (NOS) activity has been shown to participate in the processing of olfactory information of a honeybee. A honeybee's antenna (*- Application of appetitive stimuli to the antennae of honeybees elicits extension of the proboscis (PER)) lobes are the primary centers of olfactory processing that exhibit highest NOS activity, which takes place in the brain....   [tags: Biology Apis mellifera honey bee]

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Caddie - Australian Movie Review

- The movie Caddie stars Helen Morse as ‘Caddie’ Marsh, a young woman in the depression, Jackie Weaver, as Caddie’s friend Leslie, Jack Thompson as Ted, and Takis Emmanuel as Peter. Caddie is set in the times of the Australian depression and was the first remotely successful Australian feature film. It follows the story of a spirited woman and her experiences over seven life-shaping years of her life. Through her eyes we see the effect of the depression on the average Australians of the time. The movie tells the story of a young Sydney woman during the years 1925 to 1932 in which time she changes from a young suburban 25 year old matron and mother to a free-wheeling woman of 32....   [tags: essays research papers]

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Suicide of Vietnam Veterans

- Suicide of Vietnam Veterans The deaths that were experienced in Vietnam due to Agent Orange and other jungle diseases have become well known by the general public. However, it is suicide that has resulted in the deaths of over 150,000 Vietnam soldiers during and after the war. An enormous amount of suicides resulted from what most people call “protecting our country”. The Vietnam War brought more than fifty-eight thousand deaths and is to some one of the darkest battles in United States history....   [tags: Vietnam War Essays]

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Effect of monomer modification on the physico-chemical properties, degradation and in vitro biocompatibility of polyester bioelastomers

- A careful selection of monomers for biomaterial syntheses is essential for determining and controlling the functionality and biocompatibility of the biomaterials to be produced. Synthetic polyester elastomers based on molecules that are endogenous to the human metabolism have been designed [1]. In earlier studies, several investigators have reported elastic polyesters based on citric acid, in particular polyoctanediol citrate (POC) [2], poly(alkenylene maleate citrate) [3], poly(xylitol-co-citrate) [4] and poly(mannitol citric dicarboxylate) [5]....   [tags: Copolyesters, synthesized, Research]

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Analysis of Kinetic Rate Constant and Oxygen-Inhibition-Effect in Acrylate/Epoxide Hybrid Systems Photopolymerization

- I. Introduction Photopolymerization is a process that uses light instead of thermal energy to initiate the reaction that converts monomer to polymer. This process has led to increased productivity, improved physical properties and product performance, new capabilities for users, cost effectiveness, and environmental friendliness when compared with thermal processes. Ultra-violet (UV) formulated product usage has experienced growth for 35 consecutive years starting from 5,000 metric tons in 1970 to 95,000 metric tons in 2005....   [tags: Chemistry ]

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4224 words | (12.1 pages) | Preview

Study Comparing the Efficacy of Triphala Mouthwash with Chlorhexidine on Periodontal Disease

- Objectives: Triphala is the combination of three medicinal plants, extensively used in ayurveda since ancient time. Triphala mouthwash is used in the treatment of periodontal diseases because of its antimicrobial and antioxidant property. The aim of this study is to compare the efficacy of Triphala mouthwash with 0.2% chlorhexidine in hospitalized periodontal disease patients. Materials and method: In this double blind randomized, multicentric clinical trial, 120 patients were equally distributed in three groups....   [tags: ayurvedic, plaque, dental]

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Class Struggle Explored in House of the Spirits and Uncle Vanya

- The House of the Spirits and Uncle Vanya are two famous international literary works written within a century of each other. Despite the differences in time periods of which the two works were written, they both seem to convey the literary theme of class struggle between the poor lower class and the rich upper class elites. Both elaborate on the feelings of resentment and regret as a result of the hardships of life around them as demonstrated through hidden historical connections, literary devices such as parables and themes, and love reminiscences....   [tags: institution of classes, lower class, upper class]

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Confusion on What to Eat in Food Rules by Michael Pollan

- Food Rules In Food Rules, Michael Pollan explains how a lot of people are confused on what to eat. “Eat food. Not too much. Mostly plants” so he teaches us on what to eat. He tells us about how western diets are high in processed food, high in sugar and high in salt. In addition, diabetes type 2 , cancer, cardiovascular disease and obesity are the cause of so called western disease . Another type of diet that Michael says do not cause is the traditional diet because its natural food. It says averting western diets helps improve health....   [tags: diet, ingredients, product]

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Endophytic Microorganisms that Redise on the Tissues of Living Plants

- Two compounds from cultivation of the endophytic fungus Penicillium sp of leaves of kunyit putih (Curcuma zedoaria (Berg) Roscoe ) have been isolated. The endophytic fungus was cultivated on 5 L of Potatos Dextose Broth (PDB) medium at room temperature (no shaking) for 3 weeks. The cultures were then extracted with ethyl acetate to afford 3.0 g of residue after removal of the solvent under reduced pressure. The extract was separated and purified by silica gel column chromatography (CC) and afforded two pure compounds as yellow oil (compound 1) and yellow crystal ( compound 2)....   [tags: cultivation, endophytic fungus, penicillium]

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First and Second Generation Biomass Materials for Production of Biofuels

- Fossil fuels have negatively impacted the environment causing irreversible changes. There are three fossil fuels in the world today. They are: natural gas and coal, as well as the more familiar fuels refined from crude oil including gasoline, diesel, and fuel oils. In the United States, in previous years there has been a dependence on these fuels for many purposes. When fossil fuels are burned, a chemical reaction occurs called combustion. This reaction is the cause of a major source of pollution in the environment....   [tags: tending topics in the energy world]

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Isolation and Characterization of SDS-degrading Pseudomonas aeruginosa sp

- Isolation and Characterization of SDS-degrading Pseudomonas aeruginosa sp. Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, University Putra Malaysia 43400 UPM Serdang, Selangor, Malaysia Abstract: Surfactants are synthetic organic chemicals that are formulated to have cleansing or solubilisation properties. With the development of the industrial economy and increase in population density, surfactants have become one of the most widely disseminated xenobiotics to enter the aquatic environment, creating a serious environmental problem....   [tags: Biochemistry]

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The Evolution of Life Expectancy and C.R. Bard

- According to the Central Intelligence Office of the United States of America, in 2010 world life expectancy at birth was 67.2 years. This number is more than double that of years of life expectancy at birth in the early 20th century, which was reported as 31 years. This increase in life expectancy is a direct outcome of acceleration in medical advancements and breakthroughs during the early and late 20th century. A greater understanding of disease diagnosis, treatment, and cure has been a result of often intersecting advancements in biology, chemistry, microbiology, physiology, pharmacology, and medical technology....   [tags: modern medicine, medical technology, medical distr]

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Jonathan Edwards on the Doctrine of Original Sin

- Biographical Information JONATHAN EDWARDS was born to the Reverend Timothy Edwards and his wife Ester, October 5, 1703. He was the fifth of eleven born to the Reverend; who made their home in East Windsor, Connecticut. Being from an evangelical Puritan household, he was also expected to study and learn the Bible as well as the strict tenants of Calvinism. The debates over his Reformed Calvinist faith and the “liberal” movements captivated his thoughts and his pen. He considered Anglican Arminianism and Deism to be heresy that stood in direct opposition to his Reformed Puritan upbringing....   [tags: religious philosophy]

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Saint Bridit and African American Women Saints

- One of my class mates traveles to Ireland every year. My class mate stated each time she visits Ireland that she gets a greater understanding of women in the early days. We both come from a baptist, penecostal and apstolic background, I would like to compare the roles of Saint Bridit and women in the church, the only black women preachers preached about in the baptist church was harriet tuckman. The other women talked about in church was Mary the mother of Jesus Christ. However Mary the mother of Jesus did increase my faith, however I know it was much knowledge to be gained concerning women....   [tags: travel, saints, African Americans,]

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2167 words | (6.2 pages) | Preview

Population Reduction: The Method for Economic Growth?

- Until recently, the term “population growth” has always been regarded in a positive manner; still many people believe that a growing human population results in a growing economy. While many people debate whether a reduction in our total numbers is necessary, others debate what the effects would be. Not only does our population affect the economy, but also our environment, education, quality of life, and everything around us depends on how we react to this growing problem. Our population is growing and we must decide how we will react and what effects our actions will have....   [tags: Tax Rate, Ponzi Schemes]

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2073 words | (5.9 pages) | Preview

Skin Deep: The Face of Women's Makeup

- Skin Deep: The Face of Women’s Makeup Representative of womanhood, femininity and sexuality, it has been both celebrated and vulgarized. Face makeup has long played a role in beauty and women’s endless pursuit of it, but is there a significance in painting our faces that is more than just skin deep. What does makeup symbolize and how does it influence society’s standard of beauty. Women use makeup to highlight feminine features and conceal flaws, but are these also subliminal advertisements....   [tags: beauty, revlon, cosmetics]

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1199 words | (3.4 pages) | Preview

Antimicrobial and Other Therapeutic Properties of Spices

- Spices are natural compounds derived from different parts of a plant which are commonly used as flavoring, aroma and preservatives. The essential oil content and oleoresins present in the spices have given them the flavoring and aroma. In addition, the essential oil can also act as a natural preservative in foods (Ceylan and Fung, 2004). Other than flavoring, aroma and preservatives, spices have many therapeutic properties such as antimicrobial, antioxidant, chemopreventive and antifungal. The antimicrobial properties of spices have led to the development of plant-origin antibiotics so as to overcome the antibiotic resistant problems....   [tags: plants, antibiotic resistants]

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Ubiquitous Chemical that Emulates the Hormone Estrogen

- Bisphenol A (BPA) is ubiquitous chemical that has been known to emulate the hormone estrogen and act as an endocrine disruptor (Vogel 2009). Since its development in the 1890s, BPA has been widely used in the production of plastics, PVC, food packaging, laptops, cellphones, hospital equipment, and cosmetics (Rochester 2013; Vogel 2009). It has become a topic of popular debate in the past years for its estrogen-mimicking feature and possible noxious effects, which include: miscarriage, premature delivery, altered hormone, liver, and thyroid function (Vogel 2009)....   [tags: Bisphenol A,toxic chemical, CTD]

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The Restoration of the Kingdom of Judah

- Judah was not the only nation that had been taken captive to Babylon, others escaped to Egypt and parts unknown. However God was not finished with the tribe of Judah. In the Old Testament He had revealed through the prophets how He would reconstruct the nation of Israel after the desolation of the land. Towards the end of the Old Testament period it reveals how God reestablished His nation. In 586 B.C., King Nebuchadnezzar of Babylon had overthrown Judah, and the land was in ruins, and the people were in exile....   [tags: Biblical studies, religious beliefs]

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Using Population Control to Achieve Environmental Sustainability

- ... The club of Rome, in 1968 published a report called the ‘limit of growth’, which stated that population growth will lead to an increase in food demand and this will eventually lead to resource exhaustion, which is obviously not environmentally sustainable. To prevent resource exhaustion, the Club of Rome decided that we have to regulate population growth and reduce fertility- and that is what China’s One Child Policy, and Kerala’s non-enforced population policy was aiming to do. Similarly, the anti-Malthusianist- Ester Boserup was a resource optimist, with research based on studies of shifting cultivation....   [tags: birth, resources, pollution]

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QSAR Modeling for Predicting AquaticToxicity of Chemicals

- 3.1.2 Regression QSAR modeling QSAR models were developed to predict the toxicity (-log EC50 mmol/L) of chemicals using the EL based modeling methods (DTB, DTF). Distribution of the selected descriptors for regression modeling is shown in the radar chart (Fig. 1). A 10-fold CV was adopted to determine the optimal architecture and the model parameters, using the criterion of minimum MSE in training and validation set. The average values (10 runs) of MSEs and in internal validation and training data for the proposed QSAR models were 0.56, 0.11 and 0.709 0.941 (DTB) and 0.70, 0.14, and 0.661, 0.940 (DTF)....   [tags: Experiment, Values, Data]

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Quinn: A Teenager Who can Read Minds

- Some called Quinn amazing, some abnormal. She pictured herself weird, unique, and standing out way too far. She was insecure and didn’t like her capabilities. She wanted to be like the other kids in her seventh grade class, normal. Quinn’s eyes lit up as she awoke next morning. She shyly blinked and scanned the room. Exactly the same as when she drifted off to sleep. She hummed a song she heard on the radio as she slid into skinny jeans and a white blouse. Quinn pulled a hairband off her wrist and twisted her blond hair into a messy bun on the top of her head....   [tags: Thirteen, Capability, Murder]

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Application of Polymer Scaffold in Tissue Engineering

- Tissue engineering has developed dramatically over the last 10 years which aims to restore, maintain, or improve tissue functions that are defective or have been lost by different pathological conditions, either by developing biological substitutes or by reconstructing tissues. Scaffolds plays a unique role in tissue regeneration and repair and have been used for tissue engineering such as bone, cartilage, ligament, skin, vascular tissues, neural tissues, and skeletal muscle and as vehicle for the controlled delivery of drugs, proteins, and DNA....   [tags: biology, dna, biomaterial]

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The Practice and Participation of Alternative Medicine

- ... The stem is stable and sturdy, growing upwards from 30 to 90 cm in vertically. The part of the plant that is used for medicinal purposes is the rhizome and has features of being tuberous and stunted (Milner, Smith, Wayne, 2001). This root is not intended for use during pregnancy in fact it is not advised so avoidance of this plant during pregnancy is highly recommended. Other than the removing of its use during pregnancy, no health hazards are documented with the intake of appropriate measurements although minor lower intestinal discomforts may occur if consumed in doses over what is instructed....   [tags: chronic conditions, treatment, therapy]

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Vitamins: Essential for Growth and Development

- Vitamins: Essential for Growth and Development A vitamin is an organic compound needed by organisms in tiny amounts as a required nutrient. This must be obtained from the diet as organisms cannot be produced this in sufficient quantities. The term does not include other vital nutrients such as essential fatty acids, dietary minerals or essential amino acids (which are generally needed in larger amounts than vitamins). Vitamins are categorized based on their chemical and biological activities and not on their structure....   [tags: Biochemical Functions, Types]

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Saccharin, Aspartame, Sucralose and Sodium Cyclamate

- Have you ever thought how sugar came to be. If you have, trust me, you’re not the only one. I too have wondered how this compound was first discovered and how it was first used. But did you know that there are more sugars than the one we know. There are four known types of sugars: Saccharin, aspartame, sucralose and sodium cyclamate. Not many people take interest when it comes to finding out the history of things. But it is really important where the things we consume come from and if they are healthy for us....   [tags: four known types of sugars]

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Comparison: Saccharin, Aspartame, Sucralose, Sodium Cyclamate

- Sugar is is a spice that makes things you eat sweet. There are many of them that do different things and have different standards of sweetness. Some are so sweet that they make you gain weight. And some are so thick they take two days just to fully leave your mouth these are four of these sugars. Saccharine,Aspartame,Sucralose,and Sodium Cyclamate. Saccharin is an artificial sweetener. The basic substance, benzoic sulfilimine,has effectively no food energy and is much sweeter than sucrose,but has a bitter or metallic after taste especially at high concentrations....   [tags: Artificial Sweeteners, Sugars]

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Too Much Stress in Today's Children

- Have you ever seen what stress can do to a kid. It can turn the nicest kid into an aggressive and hateful person. As told stress has a huge effect on people these days, comes in many forms and levels. The very first form of stress is, “Acute stress is the most common form of stress. It comes from demands and pressures of the recent past and anticipated demands and pressures of the near future.”() The second type of stress is episodic stress which is frequent acute stress and is caused (). Then there finally is chronic stress that can wreck the person physically and mentally ()....   [tags: psycology, behavior analysis]

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Taking a Look at Genital Herpes

- INTRODUCTION Genital herpes is a highly contagious sexually transmitted disease most commonly caused by herpes simplex virus type 2 (HSV-2), although the rate of herpes simplex virus type 1 (HSV-1) genital infection has been rising due to the increase in oral-genital transmission. After an initial HSV-2 infection, over 90% of patients experience a reactivation of latent virus residing in the cell bodies of neurons at some point in their lives, and about one-third have frequent outbreaks (>6 per year).1 Although non-lethal and often asymptomatic, recurrent outbreaks as well as the infections potential to the patient’s sexual partners results in significant psychological stress to the patient....   [tags: contagious sexually transmitted diseases]

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Effects of Surfactants on Suppository Absorption

- ... However, drugs may not be suitable to be delivered orally in some circumstances. Young children, elderly, those experiencing nausea, vomiting and unconscious patients, face difficulty or even unable to swallow the medicines [1]. In these cases, rectal route becomes a good alternative in drug delivery. Rectal route is also suitable for drugs that irritate the stomach mucosa when taken orally and for drugs that act locally at the rectum area and there will not be any fear about the acceptability of the taste of drugs in paediatric patients....   [tags: drugs, paracetamol, rectal]

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The Message in Katy Perry Music

- ... Also, the word “shine” means that a person is able to achieve success when the full potential is unleashed. As people recognize their potential, they will also be able to appreciate themselves more. Self acknowledgement is equally important. With that, one will be able to accept the goods and flaws about themselves, and learn about their own uniqueness, thus enables them towards success. Along with expressing individual worth, this song also encourages people to express their ideas boldly. From the lyric “let your colors burst”(16) it portrays a person’s brilliant thoughts as colors....   [tags: language, singer, gospel music]

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From Oil to Renewable Energy

- The world is depended on oil and soon oil will become more valuable than gold and could lead to a worldwide war. Price for oil could soar to above two hundred fifty dollars per barrel. Oil and other fuel cell also cause green house gases which contribute to global warming. China is consuming two times more petroleum than 1996 and India is projected to consume three times the oil it currently does by 2050. Global house gas emission has increased by twenty percent from 2003 to 2006. Energy consumption has increased exponentially throughout the globe....   [tags: Energy]

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1859 words | (5.3 pages) | Preview

The Knorr Synthesis of Pyrroles

- The Knorr Synthesis of Pyrroles Experimental A mixture of ethyl acetoacetate 1 (7.52 g, 7.5 mL) in glacial acetic acid (18 mL) was prepared and cooled to 5oC while stirring. Sodium nitrate solution (2.1 g in 5 mL deionised water) was added at such a rate that the temperature of reaction did not exceed 7oC. Once this addition was complete the mixture was stirred with cooling for 10 minutes before being allowed to warm to room temperature. Zinc dust (4.0 g) was added to the reaction mixture in small portions so that the mixture refluxed gently, the reaction mixture was then heated to reflux for one hour....   [tags: Chemistry]

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The Benefits of Food Modification

- The modification of food has been used since the beginning of man. But, the methods did not have the same advancements as they are now. It started with simple salting and drying, trying to keep their food fresh for as long as possible. With the growth of technology, food modification grew as well. Modifying food can be both beneficial and harmful, depending on which perspective the issue is looked at. As the industry grows, companies are driven more by profit than the overall well-being of the population....   [tags: GMOs]

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895 words | (2.6 pages) | Preview

Alternatives for Acrylic Nails Consumers

- Alternatives for Acrylic Nails Consumers During the past few years the concept of acrylic nails have become a big industry across the world. Occupying an important part especially in females. The obsessive search for beautification has led to the use of cosmetics as a way of encountering that perfect appearance. Although that perfect appearance may result at a high price. Acrylic nails consumers rarely are aware of the consequences of the use of highly harmful chemicals contained by artificial nails....   [tags: history of artificial nails]

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1390 words | (4 pages) | Preview

Gulliver's Travels and Jonathan Swift

- Jonathan Swift was born on November 30, 1667 in Ireland to English parents, Jonathan and Abigail. His father, Jonathan, died shortly after his birth, leaving his mother to raise him and his sister alone. In Ireland, Swift was dependent on a nanny for three years because his mother moved to England. The young man was educated because of the patronage of his Uncle, Godwin Swift. Godwin sent him to Kilkenny Grammar School at age six, which was one of the best primary schools in Ireland at the time....   [tags: historical and biographical analysis]

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598 words | (1.7 pages) | Preview

Oxides of Hydrogen

- Oxides of Hydrogen Introduction: Hydrogen atoms can react with oxygen atoms forming different compounds. There are mainly two types, one is water and the other is hydrogen peroxide. Structure: A water molecule is made up of two hydrogen atoms and one oxygen atom joining together by covalent bonds. The shape of it is bent and its bond angle is of 105°. The structure is shown below. [IMAGE] A hydrogen peroxide molecule consists of two hydrogen atoms and two oxygen atoms joined together by covalent bonds....   [tags: Hydrogen Oxides]

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733 words | (2.1 pages) | Preview

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