Monday, August 26, 2019
The Food that Makes People Heed Assignment Example | Topics and Well Written Essays - 250 words
The Food that Makes People Heed - Assignment Example The power that he has is based from the craving for good food the customers want to sate. It is actually the power of knowing that giving the best service in exchange for peopleââ¬â¢s money to satisfy them that the book possesses. As he portrayed with his words, he is not satisfied by just the things he already knows but also enriches himself by reading many books. His hard work is not concentrated in his kitchen but also in the kitchen of others through their books. Moreover, he considers the nutritional value of his food so that even doctors and nurses approve of his cooking, therefore, making them regular customers as well. The article was well written to present the positive and negative attributes of Mr. Yeganeh but not to the effect of putting the man down. Instead, his negative attributes present logical reasons which make readers appreciate the cook even more.
Sunday, August 25, 2019
Strategic Plan Part 1 Conceptulizing a Business Essay
Strategic Plan Part 1 Conceptulizing a Business - Essay Example All the aforementioned components exemplify the nature and purpose of an organization, its long-term goals, intention and logic behind its actions. This paper will present a comprehensive view of the function of the aforementioned elements in the formulation of a strategic plan. This paper will show this by establishing a mission, vision and values for Health and Beauty Rejuvenate (HBR). Proper business planning allows for the fulfillment of needs of both the firm and its customers. The objective of Health and Beauty Rejuvenate is to become the most recognized and preferential spa of choice where customers to enhance their innate beauty. The firm will strive to offer its customers a tranquil environment with the view to provide the best spa services to its customers. The center of the spaââ¬â¢s vision is to manage its operations in a long-term milieu with the aim of enhancing both shareholder and customer value and giving back to the local community in which the business will operate. The organization has a single focus i.e. to pamper its customers. The organizationââ¬â¢s mission is not only to restore and relax its customers but also to rejuvenate its customersââ¬â¢ wellness and beauty. HBR intends to cater for its customersââ¬â¢ needs fully by providing first class services at immensely affordable rates. HBR aims at creating a peaceful environment, which ensures the clients instantly forget about their every day stresses, as well as providing services, which enhance clientsââ¬â¢ lives. HBR will attain this objective through the employment of highly skilled and educated professionals committed to gaining thorough knowledge and appreciation of the firmââ¬â¢s clients to meet all their needs (Pearce & Robinson, 2009). Since the mission of HBR is to become a world class and the spa of choice, HBR will endeavor to expand its business and attain permanence through the realization that its values are crucial to the execution of these
Saturday, August 24, 2019
Events Management Law Essay Example | Topics and Well Written Essays - 2500 words
Events Management Law - Essay Example Also the overall situation while reviewing the terms of the contract. But it would not be wrong to mention that, in this case, the requirements of the audience were not considered during such previous deliberations. The main questions that arise is this: Are the basic needs of the audience, viewed in the light of shows conducted by highly acclaimed and successful divas as the present one, subservient to such demands and is it necessary to bend rules and conduct to suit individual requirements, much to the detriment of common health and safety norms. The laws relating to law of tort could be applied in this particular instance which could hold the organising groups responsible for deficiencies in public services by not providing basic amenities to the viewing public. There are also elements of lack of car or imputed negligence which could become cause for later action. It needs to be reaffirmed that in such events, the onus of proving that standards of care were maintained would lie on the organisers who have take up the responsibility for stage managing this concert. It would be first of all, necessary to take up aspects of health and safety laws since providing for necessary air- conditioning would come primarily under public safety standards. Apparently, there has been a deficiency in service, and audience comprising of around 12,000 people had to endure 90 F heat and resultant health detriment. It is quite possible that the section of audience who have suffered health loss could file suits against event management organisers for reparation of health damages due to exposure to excessive heat and related hazards. The organisers could seek remedies under insurance coverage schemes, or exclusion clause. The main idea behind exclusion clauses is to limit or exempt the extent of liability in the event of any problem relating to performance of agreed contract. The conditions for the enforcement of the exclusion clause
Friday, August 23, 2019
Business strategy Assignment Example | Topics and Well Written Essays - 1000 words - 1
Business strategy - Assignment Example I strongly believe that Robin Hood and the Merrymen need a completely new plan. Considering the wake of the tremendous changes in the way of operation of the Sheriffââ¬â¢s men, who have adopted new ways of operating characterized by adequate money, apposite organization and efficient coordination of activities. To be at bar with the Sherriffââ¬â¢s men, the Merrymen have to abandon the old ways and forge new ways of performing their activities. This is immensely attributed by the fact that, there a continuous increase of the band men and this has caused depletion of the scarce resources such as food. The band has to move to an expanded place and work towards ways of having an organized band. The new methods of operation should ensure that, all the men are known and their roles defined. For instance, the band men can be grouped into a group of 20 men with their leader. Such strategies will enable their commander, Robin Hood to know all his men by name. This is a fundamental move because it will make it easy to identify the spies who might move into the band without being recognized. Think about your SWOT analysis, and answer the next 4 questions. Think about how each of the 4 opportunities would help (or not help) to solve Robin Hoodââ¬â¢s problems. A plan that does not solve our problems or achieve our goals is useless. Also a plan that we cannot execute is also useless. This is a good idea because; a large space will enable the large number of men who have joined the group to be identified. In addition, in a larger space, it is easy for the band men to mark their territory and any oncoming enemy. Moreover, the larger space will offer humble time for proper organization and execution of the bandââ¬â¢s activities. A fixed transit tax is a sensible thing because it will save time for negotiating. This is uniform rate for every merchant involved in transportation. This implies that
Thursday, August 22, 2019
Investment Advisors Small Business - Business Plan Essay
Investment Advisors Small Business - Business Plan - Essay Example Institutions, which would be discussed in this section, are Royal Bank of Canada, LBMC and FiduciaryVest. Royal Bank of Canada (RBC): Established back in the year 1869, RBC is Canadaââ¬â¢s largest bank in terms of asset value and market capitalization. The institution consistently receives high credit ratings both from Moodyââ¬â¢s Investor Services and Standard & Poorââ¬â¢s. This has helped the company to gain the trust of the prospective investors. The advisory service of RBC caters to the high net worth private clients and niche corporate and institutional clients across the globe. Other than investment advice, they offer complimentary financial plans and wealth consultations, guided by RBC experts (RBC, 2010, p.1-2). LBMC: LBC Investment Advisors, LLC, has been ranked among the top financial planning firms in US. The ranking was done by CPA Wealth Provider on the basis of assets under management. The financial institution has more than $ 300 million under its management and it has been experiencing sustainable and continual growth in the industry (LBMC, 2010). FiduciaryVest: FiduciaryVest is an employee owned independent investment advisory firm. They offer consulting service and advice which is in accordance to the interests of the clients. They assist their clients to analyze the assets, develop investment policy, goals and guidelines and design the investment portfolio by fulfilling the objectives of the investors only to optimize their profitability (FiduciaryVest, 2007). So, it seems that there are many institutions which are ready to challenge the new entrants in this industry. The new institution must possess some competitive advantage to sustain its existence in the long run. The company was established by three people, Carol Buckalew, Arnold Jones and Richard Small. Carol is a CFA with more than 15 years of
Chemistry IA design format Essay Example for Free
Chemistry IA design format Essay 1.0.0- Introduction 1.0.1- Focus Question- If the mass of magnesium reacted with hydrochloric acid is changed will the temperature of the solution increase and the total mass decrease. 1.0.2- Hypothesis- If the mass of magnesium that is reacted with hydrochloric acid is changed the temperature of the solution will increase and the total mass will decrease. 1.0.3- Theory- The reaction between magnesium and hydrochloric reaction is written as follows, Mg(s)+ 2HCL (aq) (MgCl2(aq)+H2 (g) (Ng, 2008, pg 1). This reaction goes through two distinct changes that both have an effect on the energy change in the reaction. Enthalpy refers to changes in energy in a compound (Assut, 2008, pg 1). Two distinct changes can occur. An endothermic change occurs when the energy being absorbed is grater then the energy being released whereas and exothermic change is when the energy being released is greater than the energy being absorbed. Energy is absorbed when bonds are broken and energy is released when they are formed (Newton, 2008, pg1). Energy change cannot be directly measured. However energy change affects the physical force of heat. Therefore a heat change is indicative of an energy change. If the heat increase in the solution the change will be exothermic and if the heat decreases the reaction will be endothermic. In respects to the formula Magnesium forms an ionic bond with chlorine to form the salt magnesium chloride. When this bond is formed energy is released in the form of an endothermic change, this energy drop would be quite small however because the bond is ionic and does not take much energy to create since magnesium and chorine bond easily. However the second change is that hydrogen breaks off from chlorine in the hydrochloric acid and hydrogen is released as a gas. The breaking of bonds would absorb energy therefore forming an exothermic reaction. Hydrogen and chorine however form a very strong covalent bond. Covalent bonds form between atoms with similar electronegative forces and are there for take a lot of energy to break ( Anissimov, 2008, pg 1) Since the endothermic change is weak and the exothermic change is strong it can be predicted that the overall change will be exothermic and therefore the solution will heat up. Temperature change in a chemical reaction can be measured with a device known as a calorimeter. A calorimeter measures the heat of the solution before the reaction has occurred and then again after the reactant has been added (Whel, 2008, pg 1). These two values can be mathematically manipulated to find the relative change in temperature. If two of the same substance have different masses it means there is more of the one substance. In a mass of a substance there is a certain amount of material that can be reacted. By increasing mass the amount of substance that may be reacted increases. Therefore if mass increased the amount that of substance reacted will increase as well providing there is enough of the reactant. This will in turn increase the energy change. Also if more of the substance reacts with the reactant more of the reactant will be used up. This means that if the magnesium is increased there will be more reaction with hydrochloric acid; this means that more hydrogen will be released as gas and the total mass of the solution will decrease. Henceforth the change in heat should be greater if their entire solution is lighter as more of the hydrochloric acid has been reacted and hydrogen lost as a gas. How the reaction works (Figure 1) Mg(s)+ 2HCL (aq) (MgCl2(aq)+H2 (g) 1.1.0- Controlling variables 1.1.1- Variables (Table 1) Variable Type of variable Method for control Mass of magnesium Independent Mass will change for each sample, sample range will be 2g, 4g, 6g, 8g and 10g Heat change Dependent This will be calculated by subtracting the final heat of the solution by the initial heat of the solution. The data will be gathered by using a calorimeter Change in mass in solution Dependent This will be calculated by measuring the weight of the solution and subtracting the weight of the calorimeter and the magnesium. The original mass not including calorimeter and the magnesium will then be subtracted by this value to mind the change of mass in the solution. Initial temperature Controlled The temperature of the solution will be heated to 25c and the reaction started immediately. External temperature Controlled The room temperature will be controlled at 24c Volume of hydrochloric acid Controlled The volume of hydrochloric acid will be 40mls per sample. Measuring apparatus Controlled A 50ml calorimeter with electronic thermometer and a scale with milligram accuracy. Time of experiment Controlled The experiment will be ended when reaction is fully complete and reaction will be given 10 seconds to calibrate before results are taken Replications Controlled Standard 5 replications of each sample will be performed. 1.1.2- Control used in comparison- The reacted samples will be compared against hydrochloric acid with no magnesium that is also 25 degrees Celsius. Since the temperature remains constant there should be no energy or mass change, this would mean that on a graph this would represent a straight line which others samples with energy changes (heat changes) could be compared to. Bibliography Ng, H.N, 2008, Acid reactions, Vat.Gov.Un, Accessed 21/08/09, http://vat.maharashtra.gov.in/communicationcenter/QueryAnswerSubjectwise.php?start=3090subId=0000000007. Asset, M.A, 2008, Chemical Enthalpy, Nasa.gov, Accessed 21/08/09, http://www.grc.nasa.gov/WWW/K-12/airplane/enthalpy.html Newton, R.N, 2008, Energetics and bonding, Unknown sponsor, Accessed 21/08/09, http://www.webchem.net/notes/how_far/enthalpy/enthalpy_diagrams.htm Anissimov, T.A, 2007 Chemical bonding, Simon Frasier University, Accessed 21/08/09, http://www.chem1.com/acad/webtext/chembond/ Whel, L.W, 2006, Calorimeters, Stanford University, Accessed 21/08/09, http://www2.slac.stanford.edu/vvc/detectors/calorimeters.html Acknowledgments The procedure of this experiment is a adaption of a previous class experiment. The source of the procedure is unknown, so thanks to Miss Crook for the inspirations for this design.
Wednesday, August 21, 2019
Putative S-Adenosyl Methionine Dependent Ironââ¬Sulfur
Putative S-Adenosyl Methionine Dependent Ironââ¬âSulfur Identification and Characterization of a Putative S-Adenosyl Methionine dependent Ironââ¬âSulfur containing protein fromà Methanococcus Jannaschii Qi Liu Research Proposal Dr. MishtuDey Dr. M. Lei Geng Dr. Leonard R. MacGillivray Dr. Amnon Kohen Dr. Daniel Quinn Introduction Biological methane formation is a microbial process that is catalyzed by microbes called methanogens, which belong to the third kingdom of life, the Archaea. Methane is formed at the final catalytic step by methyl-coenzyme M reductase (MCR), in which coenzyme B (CoBSH, N-7-mercaptoheptanoylthreonine) donates two electrons to reduce methyl-coenzyme M. MCR is a 300kDa enzyme, which is composed of three different subunits in an à ±2à ²2à ³2 arrangement and contains 2 mol of the nickel tetrapyrrole coenzyme F430, which are buried deeply within the protein complex[1]. There are five modified amino acids were found out on the à ±-subunit and near the active site of MCR from methanothermobacter marburgensis based on the X-ray crystallographic studies. They are 1-N-methylhistitine (Hisà ±400), 5-(S)-methylarginine (Argà ±271), 2-(S)-methylglutamine (Gluà ±400), S-methylcysteine (Cysà ±452), where the side chains are methylated and one thioglycine (Glyà ±445) forming a thiopeptide bo nd (Figure 1). Since the DNA sequence of the encoding MCR gene shows no unsusal condons or unusual codon usages at the positions in which the five modified amino acids were found, the modifications are introduced after translation [1]. According to vivo labeling experiments with L-(methyl-D3)-methionine, people found that the methyl groups from the modified amino acids are introduced biosynthetically from the methyl group of methionine by specific S-adenosylmethionine (SAM) dependent Figure1. Post Translational Modifications in MCRà enzymes. These methyl translational modifications are catalyzed by protein methylases that specifically recognize the amino acid sequences up and downstream of amino acid to be methylated. The genome of methanogens has many open reading frame predicted to be putative methyltransferases, which also agrees with the proposal that there are four different SAM-dependent protein methylases are involved in the post translation modification. A search of six kn own methanogenic genomes led to the identification of conserved open reading frame around the MCR gene cluster. Some methangenic archaea contain two MCR isoenzymes, designated MCR1 and MCR2. This conserved hypothetical protein is found around MCR1 in Methanococcus jannaschii and Methanobacterium thermobacter. The open reading frame from Methanococcus jannaschii, MJ0841 is annotated as a conserved hypothetical protein, which is found to be related to the radical SAM enzyme superfamily. The signature motif of SAM radical enzymes is three cysteine motif ââ¬Å"CX3CX2Câ⬠(Figure 2), multiple sequence alignment of the putative gene from methanogens show the conserved CXGFCXXC, which is known to coordinate to [4Fe-4S] cluster. (Figure 3) Figure 2. Multiple Sequence Alignment of MJ0841 Homologues from Different Methanogens Figure 3. [4Feââ¬â4S] cluster coordinated by three-cysteine motif CxxxCxxC. The fourth iron of the cluster interacts with a bound SAM. Specific Aims It is interesting and important to determine the function of this hypothetical protein. We speculate that this hypothetical protein, MJ0841, could be a possible candidate responsible for the post-translation modification of the methylated amino acids, or, is involved in the formation of the thioglycine in MCR. Research Plan, Results and Discussion Expression and Purification of MJ0841 MJ0841, a 1248bp gene, was cloned into pET28a vector. The resulting plasmid was transformed in E.coli BL21(DE3) cells for gene expression. In order to increase the iron content, MJ0841 was also co-expressed with PDB1282. Overnight cell culture grown at 37oC in Luria-Bertani (LB) medium containing both kanamycin (50ug/ml) and ampicillin (100ug/ml) was inoculated, in a 100-fold dilution, into Terrific Broth (TB) media aerobically at 37oC. FeCl3 was also added to a final concentration of 100uM to be as the iron content for iron-sulfur cluster during the growth when OD600 was around 0.3. Protein expression was then induced at OD600 of 0.6 to 0.7 with addition of Isopropyl à ²-D-1-thiogalactopyranoside (IPTG) to final concentration of 0.5mM. After overnight incubation at 37oC around 18hours, the cells were harvested by centrifugation at 5000rpm for 30mins at 4oC, and stored at -80oC. The following procedures were all carried out in oxygen free environment at 20oC. Purification was conducted anaerobically at oxygen level always below 2.0ppm in anaerobic chamber. 23g Cell were moved into anaerobic chamber and resuspended in 120mL lysis buffer (50mM tris-HCl, 300mM NaCl, 5% glycerol pH 7.5), and Phenylmethanesulfonyl fluoride (PMSF) 1mM final concentration, 3 tablets of protease inhibitor, 2-mercaptomethanol 10mM) for 15mins. The cells were lysed by sonication for 15mins followed by centrifugation at 30,000 rpm for 40mins at 4oC to remove the cell debris. The supernatant was applied to a packed 15mL Ni-NTA resin column equilibrated with lysis buffer. The column was then washed with 5 column volume of wash buffer (50mM tris-HCl, 300mM NaCl, 10mM IMD, 5% glycerol, pH 7.5). The brownish protein was eluted by gradient elution with 5 column volume of wash buffer and 5 column volume elution buffer (50mM tris-HCl, 300mM NaCl, 200mM IMD, 5% glycerol, pH 7.5). SDS-PAGE was applied to analyze the desired clean protein fractions, which were then combined an d set for overnight dialysis with dialysis buffer (50mM tris-HCl, pH 7.5, 5% glycerol) with slow stirring. The pooled fractions were concentrated using an Amicon centrifugal filter with a 30kDa molecular weight cut off (MWCO). The collected protein was further purified with 20mL packed Q-sepharose column equilibrated with lysis buffer (50mM tris-HCl, 5% glycerol, pH 7.5). The column was then washed with 5 column volume of wash buffer (50mM tris-HCl, 200mM NaCl, 5% glycerol, pH 7.5). The brownish protein was eluted by gradient elution with 5 column volume of wash buffer and 5 column volume elution buffer (50mM tris-HCl, 700mM NaCl, 5% glycerol, pH 7.5). SDS-PAGE was applied to analyze the desired clean protein fractions, which were then combined for reconstitution (Figure 4). Figure 4. SDS-PAGE gel electrophoresis analysis of MJ0841 purification fractions Reconstitution of the [4Fe-4S] Cluster of MJ0841 in Vitro The above apo-protein (16uM, 40ml) was incubated with final concentration of 5mM DTT for 1h with slow stirring at room temperature. Then, cystein was added into the above solution by dropwise to reach 10 molar folds excess of protein. After 30mins incubation, 10 molar excess of Fe(NH4)2(SO4)2 was added slowly to provide enough iron content for iron sulfur cluster and incubated for 30mins. The resulting solution was incubated with 10 molar excess of Na2S finally, and the brownish protein solution changed to dark brown after adding Na2S. The above final protein solution was kept in 4oC overnight around 14 hours for building up enough [4Fe-4S] clusters. In order to remove the unbounded iron and sulfur, the overnight reconstituted protein was concentrated to 2.5 ââ¬â 3ml of final volume and loaded onto a 5mL PT10 column equilibrated with lysis buffer (50mM tris-HCl, 5% glycerol, pH 7.5), and the final pure protein was combined. Reduction of [4Fe-4S] Cluster UV-vis spectroscopy was applied here for detecting the reduction of [4Fe-4S] cluster. A characteristic peak for [4Fe-4S] cluster was shown up near 412nm before reducing. Sodium Dithionite was used as the reducing agent and the stock solution was prepared freshly right before adding into the protein. 100 equivalents of sodium dithionite were mixed with concentrated protein, and the peak at 412nm was reduced (Figure 5). According to the results from UV-vis, the 4Fe-4S cluster was built up by reconstitution, also the [4Fe-4S]2+ was reduced to [4Fe-4S]+ by the reduction of sodium dithionite. Figure 5. UV-vis spectra of purified reconsituted MJ0841 Figure 6. EPR spectrum of as-isolated MJ0841 (blue trace) and purified reconstituted MJ0841 originating from a [3Fe-4S]+ cluster. reduced with 100 equiv sodium dithionite (red trace) EPR samples preparation and spectral collection EPR spectrums of as-isolated, oxidized and reduced form of MJ0841 are detected at 10K. All samples are prepared anaerobically. As-isolated protein was prepared with the protein without reconstitution, and exhibits a strong isotropic EPR signal, which is centered at g=2.01 same as the g=2.01 signal of the [3Fe-4S]+ cluster form (Figure 6). The oxidized form protein containing [4Fe-4S]2+ was prepared by injecting 200ul concentrated protein purified through PD10 column into EPR tube, and it normally shows silent EPR signal (Figure 7). Reduced form of as-isolated protein was performed by mixing with 100 equivalents of sodium dithionite with 200ul concentrated protein, which gives the reduction form of [4Fe-4S]+ cluster and shows the characteristic EPR signal with g factors of g=2.03 and g=1.92 (Figure 8). Figure 7. EPR spectrum of oxidized form of MJ0841. Figure 8. EPR spectrum of reduced form of MJ0841. SAM cleavage activity of MJ0841 The characteristic reaction for detecting radical SAM enzymes is reductive cleavage of SAM into S-adenosylhomocysteine (SAH) and 5ââ¬â¢-deoxyadenosyl radical (5ââ¬â¢dAdo). Assays were conducted under strict anaerobic conditions. The reaction assay contains the following: 50mM Tris-HCl, 5mM DTT, 5Mm sodium dithionite, 0.5mM SAM. Reactions were initiated by addition of SAM and carried out at 20oC for 20 hours. The control reaction was run under the same conditions as the above assay, but without presence of protein. Trifluoroacetic acid (TFA) (final concentration 5% v/v) was added to quench the reactions, which then were identified by HPLC analysis. HPLC analysis of SAM cleavage assay products After quenching by TFA, the reaction mixture was centrifuged and the supernatant was applied into HPLC analysis. 10ul of assay mixture was injected into C18 column, which had been pre-equilibrated with equilibrium buffer (40mM ammonium acetate, pH=6.2). Then the column was washed with a linear gradient from 0-50% acetonitrile for 30mins at room temperature to detect SAH and 5ââ¬â¢dAdo. The UV-detector was set at wavelength 258nm, and the standard samples, SAM, SAH, and 5ââ¬â¢dAdo, were run with the same condition as SAM cleavage reaction products. According to the retention time comparison between standard samples and products, formation of SAH and 5ââ¬â¢dAdo were all detected via HPLC analysis when enzyme was present. In the absence of enzyme MJ0841, SAM was not consumed at all and there were no any products peak formed, which confirmed the SAM was cleaved by enzyme. The dark blue, red, light blue traces show the relative intensities of 5ââ¬â¢dAdo, SAH, and SAM standards. The green trace shows the assay with the use of reconstituted MJ0841, and the SAH and 5ââ¬â¢dAdo were both observed. The purple trace shows the control assay without MJ0841, and there was not any of 5ââ¬â¢dAdo formed (Figure 9). Figure 9. HPLC analysis of the SAM cleavage assays Conclusions Future Work Initial results seem to show the [4Fe-4S] cluster and the enzyme activity. Since SAM was cleaved enzymatically, the products will be detected by mass spectroscopy to confirm the formation SAH and 5ââ¬â¢dAdo. Furthermore, probable substrates of MJ0841 will be prepared, which should contain the amino acids that would be modified. The activity assays with substrates will be examined to detect the desired methylation reaction on substrates.
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