Life in the wilderness What would it be like to leave society behind and live in the wilderness? Living in the wilderness is a manageable task and it is beneficial in many different ways. Some of the ways it is beneficial is it would prevent people from doing harmful things to the wildlife, it is a healthier way to live, we can help improve the ecosystem, and there is always something you can explore. Not only does it benefit you, it also profits our environment. Untouched nature is both beautiful
Pros & Cons of Solar Energy These types of benefits and negative aspects cover places for example solar power for your house, and also the commercial utilization of solar energy. Solar power Benefits: Solar power panels produce absolutely no air pollution, the only real air pollution created due to solar power panels may be the production of those gadgets within industrial facilities, transport from the products, as well as set up. The actual creation of one's through the utilization of fossil plus
Introduction The movie “Before the Flood (2016) “ lead by Leonardo DiCaprio has been a big impact on me and hopefully the entire world.” Leonardo DiCaprio is an influential celebrity who has devoted much of his private life to help combat an increasing threat to humanity – climate change. In order to successfully advocate for a certain issue a celebrity needs credibility and public approval. DiCaprio’s stardom gives him a unique ability to be influential, different from a “regular” politician or
Topic: The Loss of Biodiversity in Madagascar General Purpose: To inform Specific Purpose: To inform my audience on the causes of loss of biodiversity in Madagascar Chronological: Cause-effect Introduction I. "Biological diversity is being lost at a rate unequalled since the appearance of modern ecosystems more than 40 million years ago." Stated by the Royal Society. (attention getter) II. Biodiversity is the variety of life found in a particular ecosystem and one of the most significant places on
Regarding the reaction, Scheme 2-3, one of the free electron pairs of the Oxygen is the HOMO and the empty sp3 orbital of the Carbon is the LUMO. In Scheme 3-4 the oxygen of the water (or perhaps some of the remaining methanol) is the HOMO and the antibinding sp3O-H is the LUMO. 1 During the heating of the solution in which the reaction, Scheme 1-4 takes place, thin-layer
flexible. The molecular formula of glycerin is C3H5(OH)3. It is a chain of three carbon atoms, and each carbon atom is bonded to a hydrogen atom and a hydroxyl group. All three carbon atoms have four total bonds. Carbon dioxide is a colorless, odorless gas present in the atmosphere and is formed during respiration. The molecular formula for carbon dioxide is CO2. It has a carbon atom and bonded with two oxygen atoms. Carbon dioxide is only water soluble when the pressure is maintained.
ABSTRACT The Diels-Alder reaction has been an area of great research interest with regards to enhancing enantioselectivity in the reaction by use of various catalysts and reaction conditions. INTRODUCTION In organic chemistry, a Diels-Alder reaction refers to a 4, 2 cycloaddition between a diene consisting of alternating double bonds and a substituted alkene (the dienophile) resulting in a substituted cyclohexene system. The reaction is often used to reliably control regioselective and enantioselective
The huge amounts of plastic thrown away every year are enough to circle the world four times. According to Oxford dictionary plastic is “ a synthetic material made from a wide range of organic polymers that can be formed into shape while soft, and then set into inflexible or slightly flexible form”. It was invented by John Wesley Hayatt in 1869. Today, almost 260 million tons of plastic is produced a year. Plastic does not decompose and it stays on the surface for decades, which led to environment
1. Introduction Friedel–Crafts acylation of aromatic compounds is one of the most important and practical methods to prepare aromatic ketones. The resulting diaryl ketones are important chemical intermediates for the synthesis of a wide range of compounds such as pharmaceuticals, fragrances, flavors, dyes and agrochemicals [1,2]. This is an electrophilic acylation of aromatic compounds with acid chlorides or acid anhydrides, which is traditionally catalyzed by Lewis acids, such as AlCl3, BF3, SbCl5
N‟-2- (bromophenyl)-N,N-dimethylurea 16 underwent lithiation on the nitrogen to form a monolithio intermediate using MeLi, followed by bromine-lithium exchange using t-BuLi to give the dilithio species 17. 14 The intermediate 17 was then exposed to carbon monoxide to give 18, which after cyclization forms the intermediate 19, followed by loss of LiNMe2 to give 20, and finally after work up with dilute acid yielded the isatin product 1. 1 13 14 15 6 N O O 1) MeLi, 0 C CO Br N H O NMe2 2) t-BuLi, 0 C
4.1 Chemicals The magnetic particles Dynabeads® MyOneTM Carboxylic Acid were from Invitrogen (Life Technologies, Van Alley, CA, USA). The hepcidin standard was obtained from Peptide Institute Inc (Osaka, Japan), N-ethyl-N’-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) and 2-(N-morpholino)-ethane sulfonic acid (MES) from Calbiochem® (Merck), and phosphate buffer saline (PBS) from Sigma Aldrich. The solvents used, such as formic acid and acetonitrile, were LC-MS grade and were purchased
IONIC EXCHANGE CHROMATOGRAPHY This is a form of affinity chromatography that allows for the separation of product and contaminants through the use of specific electrical charges produced by the individual molecules. Resins are applied to depending on the compound one wishes to remove ie if your compound is negatively or positively charged. This system is specifically used after one of the three previously stated methods of separation and an ultrafiltration/diafiltrtion step as it is costly and therefore
Introduction 1.1 Aim: To determine the kinetic parameters, Vmax and Km, of the alkaline phosphatase enzyme through the determination of the optimum pH and temperature. 1.2 Theory and Principles (General Background): Enzymes are highly specific protein catalysts that are utilised in chemical reactions in biological systems.1 Enzymes, being catalysts, decrease the activation energy required to convert substrates to products. They do this by attaching to the substrate to form an intermediate; the
Pros and Cons of AI robots Can you imagine your life without technological machines? Technology has played a big part in our life. It is advancing and progressing rapidly in order to increase efficiency. Because of their advanced and useful ability, artificial intelligence, including computerized machines and robots, are spreading worldwide. However, while the uses of robots are helpful and effective, they can cause devastating effects towards people in the world if this technology falls in wrong
Tertiary alkyl halides tend to give a mixture with both inverted and retained configurations at reaction centers. This is because this reaction proceeds through a stable carbocation intermediate and the carbon at the reaction center goes to sp2 hybridized state (planar geometry). The incoming nucleophile can attack from both sides of the plane and can give two products with retained and inverted configuration. If there is a partial interaction with the leaving group (nucleofuge) with carbocation
acid, while the absorption band in 1529.4 cm-1 referred to N-H bending vibration of amine which is possible to be derived from the L-dopa. An intense enough absorption band at absorbance area of 1400.2 cm-1 referred to C-H bending vibration of sp2 carbon, which is possible to be derived from the aromatic ring of amino acid. The weaker absorption band at 1288.4 cm-1 corresponded to =C-O stretching vibration of aromatic compounds, and the absorption band at 1074.3-1118.6 cm-1 referred to C-O stretching
Snowflakes are small and their structure is simple at very low temperatures. At higher temperatures the distinct flakes may be formed from a very large amount of ice crystals - creating a complex star shape and can have a diameter of several inches. (Met Office, 2014) Snowflakes are accretions of several snow crystals. Most snowflakes are less than 1.3 centimetres (0.5 inches) through. Under some conditions, usually needing near-freezing temperatures unstable atmospheric conditions, and light winds
The goal of this lab was to prepare methyl m-nitrobenzoate using electrophilic aromatic substitution using nitration. The reaction used methyl benzoate with the acid catalyst as sulfuric acid. The mechanism for the nitration using methyl benzoate is presented in Figure 1. Figure 1: Benzene can only undergo substitution reactions that are called electrophilic aromatic substitution reactions. Given that benzene rings are used commonly in the production of many organic compounds, the capability
Flavonoids has a molecular structure of two aromatic carbon rings and benzopyran (A and C rings) and benzene (B rings). The chemical structure of flavonoids consists of pyrane and phenolic rings that are classified due to the differences in the substitutions and combinations that are associated between the
of this experiment is to perform a Friedel-Crafts reaction of ferrocene. Friedel-Crafts reactions are examples of electrophilic aromatic substitution reactions in which the electrophile is a carbocation or an acylium ion. These reactions form a carbon-carbon bond and allows for either an alkyl or acyl group to be substituted onto an aromatic ring. Figure 1 shows the general mechanism for the Friedel-Crafts acylation of benzene. First, the alkyl halide reacts with a strong Lewis Acid catalyst, usually